JP7283169B2 - Work machine support device and work machine wire rope installation method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a support device used when assembling a work machine and a wire rope arrangement method for the work machine.

2. Description of the Related Art Conventionally, as a working machine, a crane is known that includes a crane body, a boom (a hoisting member), and a winch. The boom is hoistably supported on the front of the crane body. The winch is attached to the crane body or the base end of the boom, and performs payout and winding of the main hoisting rope (wire rope). When assembling such a crane, towing work (wire rope installation work) is required to pull the tip of the main hoist rope fed out from the winch to the tip of the boom while the boom is laid down on the crane body. becomes. Conventionally, such towing work was performed by moving on a boom while a worker grips the leading end of the main hoist rope let out from the winch. The main hoist rope pulled up to the tip of the boom is connected to a hook and suspended from the tip of the boom where the hook stands.

Further, Patent Document 1 discloses a crane including a crane body, a mast (hoisting member), a boom, a bridle unit (lower spreader), a bail unit (upper spreader), and a boom hoisting winch. It is The boom is hoistably supported on the crane body, and the mast is hoistably supported on the crane body behind the boom. During crane work, the boom hoisting winch extended out from the boom hoisting winch is placed between the sheave of the bridle unit connected to the tip of the mast and the sheave of the bail unit arranged on the tip side of the boom from the bridle unit. A rope is hung around. The bail unit is connected to the tip of the boom by a guyline. When the boom hoisting winch winds up and lets out the boom hoisting rope, the gap between the bridle unit and the bail unit changes, thereby hoisting the boom.

In the technique described in Patent Document 1, the bridle unit and the bail unit are connected to each other and fixed to the base end of the mast during the transport stage of the crane. On the other hand, during assembly of the crane, both units are moved from the base end of the mast to the tip of the mast while being lifted by the auxiliary crane. At this time, the ends of the boom hoisting rope drawn out from the boom hoisting winch are fixed to both units. Therefore, both units are moved by the auxiliary crane while the boom hoisting winch pays out the boom hoisting rope.

JP 2012-116605 A

In the conventional working machine as described above, there is a problem that it is not easy to stretch the rope drawn out from the winch from the base end side of the hoisting member to the tip side of the hoisting member. Specifically, the operator must move the upper surface of the hoisting member several meters above the ground while gripping the tip of the main hoist rope drawn out from the winch while the hoisting member is laid down. . For this reason, workers need to move carefully while ensuring safety. In general, ropes (wire ropes) used in working machines are heavy and made of steel, which imposes a heavy burden on workers.

Furthermore, as described in Patent Document 1, in order to move the tip side of the rope toward the tip of the hoisting member by the auxiliary crane, it is necessary to match the moving speed of the auxiliary crane with the payout speed of the winch. . In particular, during the movement of the rope, the weight of the portion of the rope that is let out from the winch increases. A high level of vigilance is required for each operator operating the auxiliary crane.

The present invention has been made in view of the above problems, and improves the workability of wire rope arranging work in which a wire rope fed out from a winch is stretched from the base end side of the hoisting member to the tip side of the hoisting member. It is an object of the present invention to provide a support device for a work machine and a wire rope installation method for the work machine.

According to one aspect of the present invention, there is provided a support device for a work machine, comprising: a machine body; and a winch that is attached to the base end of the work machine and that pays out and winds up the wire rope. The hoisting member, which has a gripping portion capable of gripping the rope and capable of releasing the wire rope, and a body portion supporting the gripping portion, and which is in a state of lying down with respect to the fuselage. and a running portion that can run on a running surface disposed on the upper surface portion along at least a moving direction that is a direction from the base end portion to the tip end portion of the undulating member.

According to this configuration, it is possible to improve the workability of wire rope arranging work (wiring) in which the wire rope let out from the winch is laid over from the base end side of the hoisting member to the tip side of the hoisting member. . In particular, it is possible to minimize the chances of a worker climbing onto the hoisting member for the arranging work, and to perform the arranging work without moving the hoisting member while pulling the wire rope. becomes. Therefore, by reducing the high-place work by workers, the workability can be improved and the work time can be shortened.

In the above configuration, the gripping portion includes a pair of gripping members having gripping surfaces arranged to face each other in a direction intersecting the moving direction, and a pair of gripping members attached to the main body to support the pair of gripping members. and a gripping drive unit capable of moving at least one of the pair of gripping members such that at least one gripping member moves toward or away from the other gripping member. and when the grip drive unit moves the at least one gripping member toward the other gripping member, the wire rope can be gripped by the gripping surfaces of the pair of gripping members, and It is preferable that the wire rope is released from the pair of gripping members when the gripping driving section moves the at least one gripping member away from the other gripping member.

According to this configuration, the grip drive unit moves at least one of the gripping members so that the pair of gripping members approach each other, so that the wire rope can be gripped by the gripping surfaces of the pair of gripping members. The main hoist rope can be released from the pair of gripping members by the gripping drive section moving at least one of the gripping members so that the gripping members move away from each other.

In the above configuration, it is preferable that the gripping surfaces of the pair of gripping members are convex curved surfaces when viewed from a direction intersecting the direction in which the wire rope extends.

According to this configuration, when the position at which the wire rope is let out from the winch changes along the direction of the rotation axis of the winch, the wire rope moves along the curved surface of the gripping surface. Therefore, damage to the wire rope is suppressed.

In the above configuration, the pair of gripping members is a pair of rollers whose gripping surfaces are cylindrical outer peripheral surfaces, and in a state in which the pair of rollers grips the wire rope, the pair of rollers grips the wire rope. a roller drive unit that rotates at least one roller of the pair of rollers so as to move relative to the running unit, and the pair of rollers while the pair of rollers grips the wire rope It is possible to switch between a permitting state that permits rotation and a braking state that prevents the rotation, and in the permitting state, the pair of rollers are rotated to move the wire rope relative to the running portion, while the braking is performed. It is desirable to further include a braking mechanism that maintains a state in which the pair of rollers grips the wire rope.

According to this configuration, by switching the braking mechanism to the allowable state, the pair of rollers capable of gripping and releasing the wire rope can further have a feeding function of moving the wire rope relative to the running section. can. In addition, by switching the braking mechanism to the braking state, it is possible to prevent the wire rope from falling off due to the pair of rollers being erroneously rotated while the support device is running.

In the above configuration, the supporting portion is a pair of supporting portions that respectively support the pair of rollers so that the outer peripheral surfaces of the pair of rollers face each other in a facing direction that intersects the moving direction and is parallel to the running surface. of support members.

According to this configuration, since the height of the support device can be reduced, the support device is less likely to interfere with obstacles on the undulating member. Also, the running stability of the support device can be enhanced.

In the above configuration, an urging member that urges the pair of support members so that the pair of rollers approach each other in the facing direction is further provided, and the gripping drive unit is configured such that the pair of rollers move toward each other in the facing direction. It is desirable to move at least one of the pair of support members apart against the biasing force of the biasing member.

According to this configuration, the pair of rollers can stably grip the wire rope under the biasing force of the biasing member. In addition, when the grip driving section moves at least one support member, the wire rope can be released from the pair of rollers against the biasing force of the biasing member.

In the above configuration, the pair of support members includes an arm base end portion supported by the main body portion so as to be rotatable around a rotation shaft extending in the vertical direction, and an arm base end portion disposed on the side opposite to the arm base end portion. A pair of arms each having an arm distal end portion that rotatably supports a roller, and the arm proximal end portions of the pair of arms are supported by the main body portion while being spaced apart from each other in the opposing direction. The arm distal end portions of the pair of arms are arranged to face each other in the opposing direction at a position spaced apart in the movement direction from the arm base end portions of the pair of arms, It is preferable that the pair of arm proximal end portions be rotated about the rotation shaft against the biasing force of the biasing member so that the arm distal end portions are separated from each other in the facing direction.

According to this configuration, the distal end portion of the arm that supports the roller and the proximal end portion of the arm, which is the fulcrum of rotation of the arm, are arranged at different positions in the movement direction. Therefore, the wire rope can be released from the pair of rollers against the urging force of the urging member by rotating the pair of arm proximal end portions by the grip driving section.

Said structure WHEREIN: It is preferable that the said support part has a pair of support member which each supports a pair of said rollers so that the said outer peripheral surfaces of a pair of said rollers may mutually oppose each other in an up-down direction.

According to this configuration, the pair of rollers are arranged to face each other in the vertical direction, and the wire rope is gripped between the pair of rollers. This allows the support device to run on the hoisting member even if the running width on the hoisting member is significantly restricted.

In the above configuration, the gripping drive unit comprises at least one support member of the pair of support members, a cylinder capable of extending and retracting in the vertical direction, and a driving force for generating a driving force for extending and retracting the cylinder. It is desirable to have a source and

According to this configuration, the driving force generated by the driving source enables the pair of rollers to grip and release the wire rope.

In the above configuration, it is preferable that the gripping surfaces of the pair of gripping members are concave curved surfaces in a cross section that intersects the direction in which the wire rope extends.

According to this configuration, the wire rope can be stably gripped by the pair of gripping surfaces.

In the above configuration, the holding portion is arranged at different positions in the circumferential direction from the tubular holding member surrounding an internal space through which the wire rope is inserted, and the holding portion is inserted into the internal space. a plurality of pressing members each including a pressing portion capable of pressing a wire rope, and supported by the holding member so that the pressing portion can move in a contacting/separating direction with respect to the wire rope; and a pressing member driving portion that drives the plurality of pressing portions.

According to this configuration, since the cylindrical holding member surrounds the wire rope when the support device is running, it is possible to prevent the wire rope from falling off.

In the above configuration, it is preferable that the pressing member driving section drives the plurality of pressing sections so that the plurality of pressing sections can be arranged at a plurality of positions in the contact/separation direction.

According to this configuration, wire ropes having various outer diameters can be stably gripped by the pressing portions of the plurality of pressing members.

In the above configuration, it is preferable that the plurality of pressing members include three or more pressing members arranged at different positions along the circumferential direction.

According to this configuration, the wire rope can be stably gripped by the pressing portions of the three or more pressing members.

Said structure WHEREIN: It is preferable that the said three or more said press members are arrange|positioned at equal intervals along the said circumferential direction.

According to this configuration, the wire rope can be gripped more stably by the pressing portions of the plurality of pressing members.

In the above configuration, the pressing portion of at least one pressing member among the plurality of pressing members is a rotatable pressing member that moves the wire rope gripped by the gripping portion relative to the running portion. a pressing roller drive unit configured to rotate the pressing roller so that the pressing roller moves the wire rope relatively; It is possible to switch between an allowable state that allows rotation of the roller and a braking state that prevents the rotation, and in the allowable state the wire rope is moved relative to the running portion by the pressing roller, and in the braking state It is desirable to further include a braking mechanism for maintaining a state in which the wire rope is gripped by the pressing portions of the plurality of pressing members.

According to this configuration, when the braking mechanism is in the allowable state, the pressing roller can move the wire rope relative to the running portion and easily detach the wire rope from the grip portion. Therefore, the wire rope can be easily handed over to the worker waiting at the target position on the hoisting member. Furthermore, the wire rope can be continuously gripped in the braking state of the braking mechanism.

In the above configuration, the holding member includes a fixed portion that defines a part of the internal space and is fixed to the main body portion, and a movable portion that is relatively movable with respect to the fixed portion. and a movable portion switchable between a closed state defining the interior space and an open state opening the interior space.

According to this configuration, when the support device reaches the target position on the hoisting member, the movable portion is opened, so that the wire rope can be detached from the holding portion. On the other hand, while the support device is running, the movable portion is closed and the wire rope is surrounded by the tubular holding member, so that the wire rope is prevented from coming off from the grip portion.

In the above configuration, the movable part upwardly opens the internal space in the open state so that the wire rope can be separated upward from the internal space, and the predetermined pressing member among the plurality of pressing members is vertically movably supported by the lower portion of the holding member so as to be able to push up the wire rope arranged in the internal space to a position where the wire rope is separated from the internal space in the open state of the movable portion. It is desirable that

According to this configuration, the wire rope can be easily detached from the holding member as the predetermined pressing member moves up and down.

In the above configuration, the pair of gripping members each have an inner peripheral surface forming the gripping surface, and at least one gripping member of the pair of gripping members rotates about a predetermined rotation axis with respect to the other gripping member. When the at least one gripping member rotates so that the pair of gripping members approach each other, the wire rope can be gripped by the gripping surfaces of the pair of gripping members. It is preferable that the wire rope is released from the pair of gripping members when the at least one gripping member rotates so that the pair of gripping members are separated from each other.

According to this configuration, the wire rope can be stably gripped and released by the relative rotation of the pair of gripping members.

In the above configuration, it is preferable that the gripping surfaces of the pair of gripping members are arranged to grip the wire rope at different positions in the direction in which the wire rope extends.

According to this configuration, since the pair of gripping members do not interfere with each other due to relative rotation of the pair of gripping members, the wire rope having various outer diameters depending on the gripping surfaces of the pair of gripping members can be grasped.

In the above configuration, the rear end side guide portion is supported by the body portion on the upstream side in the movement direction of the grip portion, supports the wire rope from below, and guides the wire rope toward the grip portion. It is desirable to further include

According to this configuration, it is possible to easily guide the wire rope let out from the winch to the holding portion. As a result, the operation of gripping the wire rope by the support device can be easily realized.

In the above configuration, it is desirable to further include a rear end side guide driving section capable of vertically moving the rear end side guide section.

According to this configuration, it is possible to vertically change the guiding state of the wire rope let out from the winch by vertically moving the rear end side guide portion according to the height of the grip portion.

In the above configuration, the rear end side guide drive section moves the rear end side guide section upward until it reaches a position where the wire rope held by the holding section is separated upward from the holding section. It is desirable to be able to move.

According to this configuration, the upstream drive guide portion moves the rear end guide portion upward, so that the support device can be separated from the wire rope through below the wire rope.

In the above configuration, a tip side guide portion is supported by the body portion downstream in the moving direction of the grip portion, supports the wire rope from below, and guides the wire rope downstream in the moving direction. It is desirable to have more.

According to this configuration, the wire rope can be stably transferred to a worker waiting on the hoisting member, other sheaves, or the like.

In the above configuration, it is desirable to further include a tip side guide driving section capable of moving the tip side guide section up and down.

According to this configuration, the wire rope is moved up and down according to the height and posture of the worker waiting on the hoisting member and the height of other sheaves, etc. It can be delivered more stably.

In the above configuration, it is preferable that the traveling portion is installed on the upper surface of the hoisting member of the working machine so as to extend along the moving direction and can travel on a scaffold forming the traveling surface.

According to this configuration, there is no need to provide a dedicated travel path for the support device on the hoisting member, and the costs of the working machine and the support device are reduced.

A method of arranging a wire rope for a work machine according to another aspect of the present invention includes: a body; A work machine comprising a winch attached to the base end portion for reeling out and winding up a wire rope, wherein the wire rope reeled out from the winch in a state in which the luffing member is laid down is placed on the upper surface of the luffing member. A wire rope arranging method for a working machine, for arranging the wire rope on the hoisting member by pulling the wire rope from a predetermined initial position to a target position on the tip side of the hoisting member relative to the initial position. A supporting device having a gripping portion capable of gripping a wire rope and a running portion capable of running on the top surface portion is arranged at the initial position on the top surface portion of the hoisting member that has been laid down. and letting out the wire rope from the winch, causing the gripping part of the support device to grip the wire rope, and further extending the wire rope from the winch while the gripping part grips the wire rope. and causing the running part to run on the top surface of the hoisting member from the initial position on the hoisting member to the target position, and when the support device reaches the target position by running the running part, Releasing the grip of the wire rope by a gripping portion and connecting the wire rope to a predetermined wire rope connection portion.

According to this method, it is possible to improve the workability of the wire rope arranging operation (wiring) in which the wire rope let out from the winch is stretched from the base end side of the hoisting member to the tip side of the hoisting member. . In particular, it is possible to minimize the chances of a worker climbing onto the hoisting member for the arranging work, and to perform the arranging work without moving the hoisting member while pulling the wire rope. becomes. Therefore, by reducing the high-place work by workers, the workability can be improved and the work time can be shortened.

In the above method, when the support device reaches the target position due to the travel of the travel section, the support device moves the wire rope relative to the travel section so that the wire rope approaches the wire rope connection section. It is desirable to further provide for relative movement.

According to this method, by moving the wire rope relative to the running portion, the wire rope can be easily delivered to a worker waiting on the hoisting member or another sheave.

In the above method, the hoisting member is provided with a scaffold installed on the upper surface of the hoisting member in the lying posture so as to extend along the moving direction, and the hoisting member is provided on the running portion. and running a member on said scaffolding.

The method eliminates the need to provide a dedicated track for the support device on the luffing member, thereby reducing the cost of the work machine and the support device.

Effect of the Invention According to the present invention, a work machine capable of improving the workability of wire rope arranging work in which a wire rope let out from a winch is laid from the base end side of the hoisting member to the tip side of the hoisting member is supported. A wire rope installation method for equipment and work machines is provided.

FIG. 4 is a side view of the working machine according to the first embodiment of the present invention in a state in which the hoisting member is in a lying posture; FIG. 4 is a perspective view of the upper surface of the hoisting member of the working machine according to the first embodiment of the present invention; 1 is a plan view of a support device according to a first embodiment of the present invention; FIG. 1 is a side view of a support device according to a first embodiment of the present invention; FIG. 1 is a plan view of a support device according to a first embodiment of the present invention; FIG. 1 is a side view of a support device according to a first embodiment of the present invention; FIG. It is a typical sectional view showing the internal structure of the support device concerning a 1st embodiment of the present invention. 1 is a partially see-through plan view of a support device according to a first embodiment of the present invention; FIG. FIG. 9 is a top and bottom cross-sectional view of the support device of FIG. 8 taken along line II. It is a sectional view showing a brake mechanism of a support device concerning a 1st embodiment of the present invention. It is a bottom view which shows the braking mechanism of the support apparatus which concerns on 1st Embodiment of this invention. FIG. 4 is a cross-sectional view of the rollers of the gripping portion of the support device according to the first embodiment of the present invention; FIG. 5 is a partially see-through plan view of a support device according to a first modified embodiment of the present invention; It is a typical sectional view showing the internal structure of the support device concerning the 1st modification embodiment of the present invention. FIG. 11 is a partially see-through plan view of a support device according to a second modified embodiment of the present invention; FIG. 11 is a partially see-through plan view of a support device according to a second modified embodiment of the present invention; FIG. 11 is a partially see-through plan view of a support device according to a third modified embodiment of the present invention; FIG. 11 is a partially see-through plan view of a support device according to a fourth modified embodiment of the present invention; It is a top view of the support apparatus which concerns on 5th modification embodiment of this invention. It is a side view of the support apparatus which concerns on 5th modification embodiment of this invention. It is a top view of the support apparatus which concerns on 5th modification embodiment of this invention. It is a side view of the support apparatus which concerns on 5th modification embodiment of this invention. FIG. 11 is a plan view of a support device according to a sixth modified embodiment of the present invention; It is a side view of the support apparatus which concerns on 6th modification embodiment of this invention. It is a side view of the support apparatus which concerns on 6th modification embodiment of this invention. FIG. 21 is a cross-sectional view showing a braking mechanism of a support device according to a seventh modified embodiment of the present invention; FIG. 21 is a plan view showing a braking mechanism of a support device according to an eighth modified embodiment of the present invention; FIG. 21 is a cross-sectional view showing a braking mechanism of a support device according to an eighth modified embodiment of the present invention; FIG. 21 is a plan view of a support device according to a ninth modified embodiment of the present invention; It is a side view of the support apparatus which concerns on 9th modification embodiment of this invention. It is a side view of a support device according to a second embodiment of the present invention. It is a top view of the support device which concerns on 2nd Embodiment of this invention. FIG. 8 is a plan view showing how the support device according to the second embodiment of the present invention runs on the crank portion of the foothold on the hoisting member. FIG. 7 is a cross-sectional view of a grasping portion of a support device according to a second embodiment of the present invention; FIG. 7 is a cross-sectional view of a grasping portion of a support device according to a second embodiment of the present invention; FIG. 11 is a schematic cross-sectional view showing how a grip part of a support device according to a second embodiment of the present invention feeds out a wire rope. FIG. 7 is a cross-sectional view of a grasping portion of a support device according to a second embodiment of the present invention; It is (A) a front view of the pressing member of the support apparatus which concerns on 2nd Embodiment of this invention, and (B) is a side view. FIG. 21 is a side view of a support device according to a tenth modified embodiment of the present invention; FIG. 21 is a plan view of a support device according to a tenth modified embodiment of the present invention; FIG. 20 is a side view showing how the support device according to the tenth modified embodiment of the present invention climbs over an obstacle; FIG. 20 is a side view showing how the support device according to the tenth modified embodiment of the present invention climbs over an obstacle; It is sectional drawing (A) and (B) of the holding part of the support apparatus which concerns on 11th modification embodiment of this invention. FIG. 21 is a plan view of a support device according to a twelfth modified embodiment of the present invention; It is a side view of a support device according to a third embodiment of the present invention. It is a top view of the support apparatus which concerns on 3rd Embodiment of this invention. It is a rear view of the support apparatus which concerns on 3rd Embodiment of this invention. 13A and 13B are side views (A) and (B) of a grip portion of a support device according to a third embodiment of the present invention; FIG. 8A and 8B are side views (A) and (B) showing how the gripping portion of the support device according to the third embodiment of the present invention grips the wire rope. FIG. 13A and 13B are side views (A) and (B) showing how the gripping portion of the support device according to the thirteenth modified embodiment of the present invention grips the wire rope. FIG. 21 is a side view of a support device according to a fourteenth modified embodiment of the present invention; FIG. 20 is a side view of a support device according to a fifteenth modified embodiment of the present invention; FIG. 32 is a side view of a support device according to a sixteenth modified embodiment of the present invention; FIG. 32 is a side view of a support device according to a sixteenth modified embodiment of the present invention; FIG. 31 is a side view of a support device according to a seventeenth modified embodiment of the present invention; FIG. 32 is a rear view of the feeding section of the support device according to the eighteenth modified embodiment of the present invention; FIG. 32 is a rear view of the feeding section of the support device according to the nineteenth modified embodiment of the present invention; FIG. 20 is a side view of a support device according to a twentieth modified embodiment of the present invention; FIG. 21B is an enlarged side view of the distal end side guide portion of the support device according to the twenty-first modified embodiment of the present invention; FIG. 21B is an enlarged rear view of the distal end side guide portion of the support device according to the twenty-first modified embodiment of the present invention; It is a top view of the support apparatus which concerns on 4th Embodiment of this invention. It is a side view of the support apparatus which concerns on 4th Embodiment of this invention. It is a side view of the support apparatus which concerns on 4th Embodiment of this invention. FIG. 22 is a side view of a support device according to a twenty-second modified embodiment of the present invention; FIG. 22 is a plan view of a support device according to a twenty-second modified embodiment of the present invention; FIG. 22 is a side view of a support device according to a twenty-second modified embodiment of the present invention; FIG. 22 is a plan view of a support device according to a twenty-second modified embodiment of the present invention; FIG. 23 is a side view of a support device according to a twenty-third modified embodiment of the present invention; FIG. 23 is a plan view of a support device according to a twenty-third modified embodiment of the present invention; FIG. 23 is a plan view showing how the support device according to the twenty-third modified embodiment of the present invention runs on the crank portion of the scaffolding on the hoisting member. FIG. 24 is a side view of a support device according to a twenty-fourth modified embodiment of the present invention; FIG. 24 is a plan view of a support device according to a twenty-fourth modified embodiment of the present invention; FIG. 22 is a side view showing how the support device according to the twenty-fourth modified embodiment of the present invention transfers the wire rope; FIG. 24 is a side view showing how the support device according to the twenty-fourth modified embodiment of the present invention transfers the wire rope; FIG. 32 is a side view of a support device according to a twenty-fifth modified embodiment of the present invention;

<First Embodiment>
Hereinafter, each embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a crane 1 (working machine) to which a support device (support device 50, FIG. 2) according to the first embodiment of the present invention is applied, showing a state during assembly work of the crane 1. ing. Further, hereinafter, the directions of "up", "down", "left", "right", "front" and "back" are shown as necessary in each figure, but the directions are It is shown for convenience in order to explain the structure of the crane 1 and each support device according to the embodiment, and the method of assembling the crane 1, and does not limit the moving direction, usage mode, etc. of the working machine and support device according to the present invention. do not have.

The crane 1 includes an upper revolving body 11 (body) corresponding to a crane main body, a lower traveling body 10 supporting the upper revolving body 11 so as to be able to turn, a boom 16 functioning as a lifting member, a gantry 14, and a mast 15. And prepare. A cab 12 (driver's seat) is arranged at the front end of the upper revolving body 11 to allow a worker to get on.

The boom 16 shown in FIG. 1 is of a so-called lattice type and is composed of a proximal member, one or more intermediate members, and a distal member. The boom 16 is rotatably supported by the upper revolving body 11 about a horizontal rotation axis. In other words, the boom 16 includes a base end portion attached to the upper rotating body 11 so as to be able to rise and fall, and a tip portion on the opposite side. However, the specific structure of boom 16 is not limited. Boom 16 may be constructed from a single member.

The mast 15 is rotatably supported by the upper revolving body 11 at a position on the rear side of the boom 16 about a rotation axis parallel to the rotation axis of the boom 16 . That is, the mast 15 is also rotatable in the same direction as the boom 16 is raised and lowered.

The gantry 14 is a column fixed to the rear end side of the upper rotating body 11 .

Further, the crane 1 includes a counterweight 13, a boom hoisting rope 17, a guy line 18, a boom hoisting winch 19, a main hoisting winch 20 (winch), and a main hoisting rope 21 (wire rope).

The counterweight 13 is attached to the rear end of the upper revolving body 11 . The counterweight 13 is a weight for maintaining the balance of the crane 1 in the longitudinal direction.

The guy line 18 connects the tip of the mast 15 and the tip of the boom 16 . The boom hoisting winch 19 is arranged substantially in the front-rear direction central portion of the upper revolving structure 11 , and performs a payout operation and a hoisting operation of the boom hoisting rope 17 . A boom hoisting rope 17 let out from a boom hoisting winch 19 is stretched between sheaves respectively arranged at the tip of the gantry 14 and the tip of the mast 15, as shown in FIG. When the boom hoisting winch 19 winds up and pays out the boom hoisting rope 17, the mast 15 rotates, and the boom 16 hovers in conjunction with the rotation.

The main hoisting winch 20 is arranged on the front side of the boom hoisting winch 19 in the upper rotating body 11 . The main hoisting rope 21 let out from the main hoisting winch 20 is arranged along the boom 16 and then suspended from the tip of the boom 16 . When the main hoisting winch 20 winds up and pays out the main hoisting rope 21, a hook (not shown) disposed on the tip side of the main hoisting rope 21 lifts and suspends the load. Note that the main hoist winch 20 may be arranged at the base end of the boom 16 .

As shown in FIG. 1, in the stage of assembling the crane 1, it is necessary to bridge the leading end of the main hoisting rope 21 let out from the main hoisting winch 20 from the base end side of the boom 16 to the tip end side of the boom 16. Yes (wire rope pulling work, installation work). When the boom 16 is laid down as shown in FIG. 1, the upper surface of the boom 16 is several meters above the ground. In this embodiment, the support device 50 pulls the tip of the main hoisting rope 21 let out from the main hoisting winch 20 from the base end of the boom 16 to the tip of the boom 16 while traveling on the boom 16 . That is, the support device 50 supports the work of arranging the main hoist rope 21 in the crane 1 .

FIG. 2 is a perspective view showing how the support device 50 according to the present embodiment travels on the upper surface of the boom 16, and shows the boom 16 from the tip side of the boom 16 in a state of being laid down with respect to the upper rotating body 11. 16 is a view of the base end side of 16 (upper revolving body 11 side).

The boom 16 described above includes a pair of first main pipes 161 , a pair of second main pipes 162 , a plurality of lattice pipes 163 and guide roller units 164 . The pair of first main pipes 161 and the pair of second main pipes 162 each extend along the longitudinal direction of the boom 16 and form the boom 16 with a quadrangular section structure.

A plurality of lattice pipes 163 connect the pair of first main pipes 161 to each other, the pair of second main pipes 162 to each other, and the first main pipe 161 and the second main pipe 162 to each other. 2, only a plurality of lattice pipes 163 connecting the pair of first main pipes 161 are shown.

The guide roller unit 164 is fixed on the lattice pipe 163 and suppresses the contact between the main hoisting rope 21 and the boom 16 when the main hoisting rope 21 is paid out or wound on the back surface of the boom 16 during work. The guide roller unit 164 has a guide roller 164A and a pair of left and right brackets 164B. A pair of left and right brackets 164B are fixed near both ends of the lattice pipe 163 and rotatably support the guide rollers 164A. When the operator pulls the main hoisting rope 21, when the main hoisting rope 21 is placed on the guide roller unit 164, the rotation of the guide roller unit 164 causes the main hoisting rope 21 to move forward (in the rope feeding direction). be guided. As a result, the towing load on the operator is reduced.

Additionally, the boom 16 comprises a scaffolding 100 . The scaffolding 100 is provided on the upper surface of the boom 16 that has been laid down so as to extend mainly in the front-rear direction (moving direction of the support device 50). Specifically, the scaffolding 100 is fixed on a plurality of lattice pipes 163 and positioned above the lattice pipes 163 and below the guide rollers 164A of the guide roller unit 164 described above (FIG. 2). Workers can move on the scaffolding 100 as needed. The scaffolding 100 also has a U-shaped crank portion 100C. The crank portion 100C is formed by bending a portion of the scaffolding 100 into a U-shape. An idler sheave arrangement portion 100S is formed inside the crank portion 100C. An idler sheave (not shown) is rotatably supported by the boom 16 in the idler sheave arrangement portion 100S, so that the main hoist rope 21 can be guided to the tip side of the boom 16 when the crane 1 is in use.

3 and 5 are plan views of the support device 50 according to this embodiment. 4 and 6 are side views of the support device 50 according to this embodiment.

The support device 50 includes a grip portion 50A and a traveling portion 50B including a main body portion 50H.

The gripping portion 50A is connected to the main body portion 50H and is capable of gripping the main hoisting rope 21 let out from the main hoisting winch 20 and releasing the main hoisting rope 21 .

The body portion 50H is a body portion of the support device 50 and supports each member mounted on the support device 50 .

The traveling unit 50B travels on a traveling surface disposed on the upper surface (scaffolding 100) of the boom 16 in a state of being laid down with respect to the upper revolving body 11, in a moving direction from at least the base end of the boom 16 to the tip. It is possible to In this embodiment, the traveling portion 50B has a known crawler structure, and its width in the left-right direction is set narrower than the width of the scaffolding 100 in the left-right direction. In each figure, an arrow DS indicates a direction (moving direction) in which the support device 50 mainly moves to pull the main hoisting rope 21 .

The gripping portion 50A includes a pair of left and right rollers 510 (gripping members) and a pair of left and right roller support portions 511 (a support portion, a pair of support members, a pair of arms) (FIGS. 3 and 5). The pair of left and right rollers 510 are respectively arranged on a pair of center lines extending in a direction (vertical direction) perpendicular to (crossing) the moving direction of the support device 50, and are opposed to each other in the direction crossing the moving direction. It has a cylindrical outer peripheral surface (gripping surface, see rope gripping surface 510F in FIG. 12) on which it is arranged. The outer peripheral surfaces of the pair of left and right rollers 510 are mutually convex curved surfaces (circumferential surfaces) when viewed from the direction parallel to the center line (the direction intersecting with the direction in which the main winding rope 21 extends). The pair of left and right roller support portions 511 are mounted (supported) on the main body portion 50H at intervals in the left-right direction, and rotatably support the pair of rollers 510, respectively. In particular, in the present embodiment, the pair of roller support portions 511 is such that the outer peripheral surfaces of the pair of rollers 510 are arranged in the horizontal direction (perpendicular to (intersect) the moving direction of the support device 50 and the running surface of the scaffolding 100). The pair of rollers 510 are respectively supported so as to face each other in parallel opposing directions.

FIG. 7 is a schematic cross-sectional view showing the internal structure of the support device 50 according to this embodiment. FIG. 8 is a partially see-through plan view of the support device 50. As shown in FIG. FIG. 9 is a top-down cross-sectional view of the support device 50 of FIG. 8 taken along line II.

Referring to FIG. 9, the pair of left and right roller support portions 511 described above has an L-shape when viewed from the side, and has a space in which each member to be described later can be accommodated. Each roller support portion 511 includes a cylindrical support base end portion 511B (arm base end portion) supported by the main body portion 50H so as to be rotatable around a rotation axis extending in the vertical direction, and a support base end portion 511B. and a support tip portion 511A (arm tip portion) arranged on the opposite side and rotatably supporting the roller 510 . Note that the support base end portions 511B of the pair of roller support portions 511 are supported by the main body portion 50H at intervals in the left-right direction (opposing direction), and the support tip portions 511A of the pair of roller support portions 511 are supported by a pair of They are arranged to face each other in the left-right direction at positions spaced in the front-rear direction (moving direction of the support device 50) from the support base end portion 511B.

7 to 9, the grip portion 50A further includes a pair of left and right rotating shafts 510A, a pair of left and right bearings 510B, a pair of left and right pulleys 511C, a pair of left and right pulleys 511D, and a pair of left and right belts. 512 , a pair of left and right bearings 513 , and a pair of left and right retaining members 514 . 7 and 9 show the member corresponding to the left roller 510 among the pair of left and right members. Furthermore, the gripping portion 50A supplies a pair of left and right rollers 510 and a pair of left and right roller support portions 511 with a pair of left and right first motors M1 (FIG. 7) and a pair of left and right second motors M2 ( 9). The first motor M1 and the second motor M2 may be arranged one by one, and the drive force may be transmitted to the left and right rollers 510 and the roller support portions 511 by a gear mechanism (not shown). The first motor M1 and the second motor M2 are electric motors (servo motors). The first motor M1 has a motor shaft MG, and the motor shaft MG is arranged so as to enter the inside of the support base end portion 511B from below (FIG. 9).

Axis of rotation 510</b>A configures a shaft portion for rotation of roller 510 and is fixed to roller 510 . In this embodiment, the rotating shaft 510A is arranged so as to extend in the vertical direction. A load cell 510A1 (FIG. 9) is attached to the rotating shaft 510A. The load cell 510A1 detects the rotation load of the rotating shaft 510A.

The bearing 510B is fixed to the support tip portion 511A of the roller support portion 511 and rotatably supports the rotating shaft 510A. In addition, as shown in FIG. 9, the rotary shaft 510A is supported by two upper and lower bearings 510B. The pulley 511C is arranged inside the support base end portion 511B and fixed to the upper end portion of the motor shaft MG of the first motor M1. On the other hand, the pulley 511D is fixed to the rotary shaft 510A inside the support tip portion 511A. Belt 512 is stretched over pulley 511C and pulley 511D. Note that a known chain or the like may be used instead of the belt 512 .

The bearing 513 is fixed to the main body portion 50H and rotatably supports the outer peripheral surface of the cylindrical support base end portion 511B. The retaining member 514 is fixed to the upper surface of the main body 50H, and presses the flange 511F fixed to the outer periphery of the support base end 511B from above, so that the roller support 511 is separated from the main body 50H. to prevent Gear teeth (not shown) are formed on a portion of the outer peripheral surface of the support base end portion 511B below the bearing 513, and the gear teeth are connected to an output shaft (not shown) of the second motor M2. ing.

According to the configuration described above, when the first motor M1 (roller drive unit) rotates in a predetermined rotation direction, the pulley 511C fixed to the upper end of the motor shaft MG rotates, thereby rotating the belt 512 and the pulley 511D. Rotational driving force is transmitted to the rotating shaft 510A via. As a result, roller 510 fixed to the upper end of rotating shaft 510A rotates in the direction of arrow DR in FIG. At this time, the first motor M1 moves in the same direction and at the same speed in the region where the outer peripheral surfaces of the pair of rollers 510 face each other while the pair of rollers 510 grip the main winding rope 21. A pair of rollers 510 are rotated. As the rollers 510 rotate, the main hoisting rope 21 sandwiched between the pair of left and right rollers 510 is sent out in the direction of the arrow DW in FIG. do).

Further, when the second motor M2 (gripping drive unit) rotates in a preset first rotation direction, the support base end portion 511B rotates around the same rotation axis as the motor shaft MG of the first motor M1. At this time, the pair of left and right roller support portions 511 rotate (move) so that the pair of left and right rollers 510 approach each other. As a result, the main hoist rope 21 can be gripped by the outer peripheral surfaces of the pair of left and right rollers 510 . On the other hand, when the second motor M2 is rotated in the second rotation direction opposite to the first rotation direction, the support base end portion 511B similarly rotates around the same rotation axis as the motor shaft MG of the first motor M1. move (move). At this time, the pair of left and right roller support portions 511 rotate so that the pair of left and right rollers 510 are separated from each other. As a result, the main winding rope 21 can be released from the pair of left and right rollers 510 .

10 is a cross-sectional view showing the braking mechanism of the support device 50, and FIG. 11 is a bottom view showing the braking mechanism of the support device 50. As shown in FIG. The support device 50 further includes a lock mechanism 515 (braking mechanism). The lock mechanism 515 has a function of preventing the pair of rollers 510 from rotating while the pair of rollers 510 are gripping the leading end of the main winding rope 21 . More specifically, the lock mechanism 515 can be switched between a permitting state in which the pair of rollers 510 are allowed to rotate while the pair of rollers 510 are gripping the main winding rope 21, and a braking state in which the rotation is prevented, In the allowable state, the rotation of the pair of rollers 510 causes the main hoisting rope 21 to move forward relative to the traveling portion 50B, while in the braking state the pair of rollers 510 maintains the state of gripping the main hoisting rope 21 .

The lock mechanism 515 is fixed to the upper surface of the support base end portion 511B of the roller support portion 511 . The lock mechanism 515 has a lock body portion 515A and a lock lever 515B. The lock main body portion 515A is fixed on the support base end portion 511B and supports the lock lever 515B so as to be able to swing around the horizontal rotation axis. The lock lever 515B extends to enter below the roller 510 from the lock body portion 515A. A cylindrical projection is provided at the tip of the lock lever 515B. On the other hand, a plurality of circular locking recesses 510J as shown in FIG. A plurality of locking recesses 510J are formed over the entire circumference of the roller 510 .

When the main hoist rope 21 is gripped by the pair of left and right rollers 510, when a braking motor (not shown) swings the lock lever 515B upward, the protrusion of the lock lever 515B moves into the lock recess 510J directly above. Mate. Thus, in this embodiment, the lock mechanism 515 is switched to the braking state, thereby preventing the rollers 510 from accidentally rotating while the main hoist rope 21 is gripped. As a result, sending out of the main hoisting rope 21 by the pair of left and right rollers 510 and falling off of the main hoisting rope 21 are suppressed. Such control is performed while the support device 50 is pulling (guiding) the main hoisting rope 21 while traveling from the base end side to the tip end side of the boom 16 . On the other hand, when the lock mechanism 515 is switched to the allowable state, the pair of rollers 510 capable of gripping and releasing the main hoisting rope 21 further moves the main hoisting rope 21 relative to the traveling portion 50B, which is a so-called delivery function. can be combined.

FIG. 12 is a cross-sectional view along the vertical direction of the rollers 510 of the grip portion 50A of the support device 50 according to this embodiment. As shown in FIG. 12, when viewed from a direction parallel to the running surface, the rope gripping surface 510F (gripping surface), which is the outer peripheral surface of the roller 510, is an inwardly recessed curved surface. It has a circular cross-sectional shape. Also, the amount of depression in the horizontal direction of the central portion of the rope gripping surface 510F with respect to the upper and lower ends of the rope gripping surface 510F is defined as δ. Here, when the diameter φ of the main winding rope 21 (wire rope) gripped by the pair of left and right rollers 510 is A≦φ≦B, it is desirable that the relationship 2σ<A and 2R>B is satisfied. In this case, the pair of left and right rollers 510 can stably sandwich a plurality of main winding ropes 21 having different outer diameters. In particular, since the main hoisting rope 21 is clamped by the circular arc portion of the rope gripping surface 510F, detachment and falling of the main hoisting rope 21 are suppressed.

As described above, according to the support device 50 according to the present embodiment, the wire rope arrangement that spans the main hoisting rope 21 let out from the main hoisting winch 20 from the base end side of the boom 16 to the tip side of the boom 16 is provided. It is possible to improve the workability of the installation work (wiring). In particular, for the installation work, the operator should minimize the chance of climbing onto the boom 16, and perform the installation work without moving the boom 16 while pulling the main hoisting rope 21 by the operator. becomes possible. Therefore, by reducing the high-place work by workers, the workability can be improved and the work time can be shortened.

Further, the second motor M2 drives (rotates) the roller support portion 511 to move the rollers 510 so that the pair of rollers 510 approach each other, so that the pair of rollers 510 can grip the main winding rope 21. On the other hand, the main winding rope 21 can be released from the pair of rollers 510 by the second motor M2 driving the roller support portion 511 and moving the rollers 510 so that the pair of rollers 510 move away from each other.

Further, in a state in which the pair of rollers 510 grip the main hoisting rope 21, the first motor M1 rotates the pair of rollers 510 around the center line (rotating shaft 510A), thereby sending out the gripped main hoisting rope 21. Thus, the main hoisting rope 21 can be smoothly handed over to a worker waiting at the tip of the boom 16 or the like.

Moreover, in this embodiment, the pair of rollers 510 are arranged to face each other in the left-right direction. Further, the roller 510 has a height (thickness) dimension smaller than its radius. Therefore, the height of the support device 50 can be reduced as shown in FIG. As a result, the support device 50 is less likely to interfere with obstacles on the boom 16, and the center of gravity of the support device 50 is lowered, thereby improving the running stability.

Further, in this embodiment, the main winding rope 21 is gripped by the outer peripheral surfaces of the pair of circular rollers 510 . The outer peripheral surfaces of the pair of rollers 510 are mutually convex curved surfaces when viewed from a direction parallel to the center line (a direction crossing the direction in which the main winding rope 21 extends, the vertical direction). Therefore, the position at which the main hoisting rope 21 is paid out from the main hoisting winch 20 changes along the direction of the rotation axis of the main hoisting winch 20 , and the main hoisting rope 21 moves left and right between the main hoisting winch 20 and the support device 50 . Since the main hoisting rope 21 moves along the outer peripheral surface (curved surface) of the roller 510 even when it swings violently, damage to the main hoisting rope 21 is suppressed.

Further, in the present embodiment, the first motor M1 (FIG. 7) and the second motor M2 (FIG. 9) are arranged inside the body portion 50H. Therefore, the weight of the pair of left and right roller support portions 511 can be reduced, and the center of gravity of the support device 50 can be set low to prevent the support device 50 from overturning.

Further, in this embodiment, the rotating shaft 510A of FIG. 9 is equipped with a known load cell 510A1 (torque measuring section, tension measuring section). The load cell 510A1 detects the rotation load of the rotating shaft 510A. As a result, with the pair of rollers 510 gripping the main hoisting rope 21, the traction tension of the main hoisting rope 21 can be measured from the rotational load. Therefore, it is possible to monitor the state in which the main hoist rope 21 is being pulled and the state in which the support device 50 is under load according to the signal output from the load cell 510A1. Further, in this embodiment, the support device 50 runs on a scaffolding 100 provided for the worker to move on the boom 16 . Therefore, there is no need to provide a dedicated travel path for the support device 50 on the boom 16, and the costs of the crane 1 and the support device 50 are reduced. In addition, since the width of the traveling portion 50B of the support device 50 in the left-right direction (the width between the pair of left and right crawlers) is set narrower than the width of the scaffolding 100, the support device 50 is prevented from falling off the scaffolding 100. be done.

Further, in the present embodiment, when the pair of left and right rollers 510 are moved leftward or rightward from the position shown in FIG. The main hoist rope 21 gripped by 510 moves leftward or rightward. That is, the pair of left and right roller support portions 511 (connecting portions) connect the gripping portion 50A and the traveling portion 50B to each other so that the gripping portion 50A can be relatively displaced with respect to the traveling portion 50B. In particular, in the present embodiment, the connecting portion is configured so that the grip portion 50A moves in the left-right direction (direction perpendicular to (intersects) the moving direction of the support device 50 and parallel to the running surface of the scaffolding 100) with respect to the running portion 50B. The grip portion 50A and the running portion 50B are connected to each other so as to be relatively movable.

According to such a configuration, by changing the relative positional relationship between the gripping portion 50A and the running portion 50B according to the movement of the running portion 50B and the main hoisting rope 21, the tension of the main hoisting rope 21 during running is reduced. The main hoisting rope 21 can be arranged on the boom 16 while suppressing an increase in . In particular, even when the pay-out position of the main hoist rope 21 in the main hoist winch 20 changes in the left-right direction, the gripping portion 50A can be moved in the left-right direction according to the pay-out position. At this time, the driving force of the second motor M2 (driving portion) can positively displace the gripping portion 50A relative to the traveling portion 50B.

Further, in the present embodiment, the pair of rollers 510 of the gripping portion 50A (rope feeding portion) is supported by the running portion 50B, and relatively moves the main winding rope 21 to the leading end side in the moving direction with respect to the running portion 50B. is possible. In addition, the second motor M2 (roller movement driving unit) can move at least one roller 510 of the pair of rollers 510 such that at least one roller 510 comes into contact with and separates from the other roller 510. It is possible. In addition, the first motor M1 (roller rotation drive unit) is configured such that the pair of rollers 510 move the main hoist rope 21 relative to the traveling portion 50B while the pair of rollers 510 grip the main hoist rope 21. At least one of the pair of rollers 510 is rotated. Therefore, the main hoist rope 21 can be reliably gripped by the gripping portion 50A while the traveling portion 50B is traveling. Furthermore, when the support device 50 reaches the tip end side of the boom 16 and the travel part 50B stops due to travel of the travel part 50B, the grip part 50A can move the main hoist rope 21 to the tip end side in the moving direction. Therefore, the main hoisting rope 21 can be easily transferred to a worker waiting at the tip of the boom 16 or a sheave arranged at the tip of the boom 16 . In particular, the relative movement and rotation of the pair of rollers 510 allows the main winding rope 21 to move relative to the running portion 50B.

Next, modified embodiments of the present invention will be described based on the above-described first embodiment. In addition, in each modified embodiment described below, differences from the base embodiment will be described, and description of common points will be omitted. Further, the following modified embodiments are not limited to be applied to the support device 50 according to the first embodiment, but can also be applied to support devices according to other embodiments described later.

FIG. 13 is a partially see-through plan view of the support device 50 according to the first modified embodiment of the present invention. FIG. 14 is a schematic cross-sectional view showing the internal structure of a support device 50 according to this modified embodiment. In this modified embodiment, the grip part 50A of the support device 50 has a center link 516, a pair of left and right side links 517, and a spring 518 (biasing member). The central link 516 is supported in a substantially central portion of the body portion 50H so as to be rotatable around a vertically extending fulcrum 516A. Center link 516 extends in two opposite directions from fulcrum 516A. A pair of left and right side links 517 connect the central link 516 and a pair of left and right roller support portions 511 (arms), respectively. That is, the left side link 517 in FIG. 13 connects one end of the central link 516 and the tip of the left roller support portion 511 . Similarly, the right side link 517 in FIG. 13 connects the other end of the center link 516 and the tip of the right roller support portion 511 . The base end of the side link 517 is rotatably supported by the central link 516 at a fulcrum 517A, and the tip of the side link 517 is supported by the roller support 511 so as to be rotatable about the same axis as the roller 510. It is The spring 518 urges the pair of left and right roller support portions 511 so that the tip portions (arm tip portions) of the pair of roller support portions 511 approach each other in the left-right direction (facing direction). One end of the spring 518 is connected to the left roller support 511 and the other end of the spring 518 is connected to the right roller support 511 .

Further, in this modified embodiment, the third motor M3 (gripping driving section) (FIG. 14) arranged inside the main body section 50H rotates the central link 516 around the fulcrum 516A. Specifically, the third motor M3 rotates (moves) the pair of roller support portions 511 around the fulcrum 516A so that the tip portions of the pair of roller support portions 511 are separated from each other in the left-right direction against the biasing force of the spring 518. ). Therefore, when the driving force of the third motor M3 is not generated, the biasing force of the spring 518 enables the main winding rope 21 to be gripped between the pair of left and right rollers 510 . On the other hand, when the third motor M3 generates driving force, the pair of left and right rollers 510 are separated from each other, and the main winding rope 21 is released. A worker positioned around the crane 1 instructs to switch the driving of the third motor M3 by radio communication or the like. As described above, in this modified embodiment, the simple configuration of the third motor M3, the center link 516, the side links 517, the spring 518, etc. can stably switch between holding and releasing the main hoist rope 21. In particular, the pair of left and right rollers 510 can stably grip the main hoist rope 21 under the biasing force of the spring 518 . Further, when the third motor M3 rotates the pair of roller support portions 511, the main winding rope 21 can be released from the pair of rollers 510 against the biasing force of the spring 518.

In addition, in this modified embodiment, the supporting end portion 511A (see FIG. 9) of the roller supporting portion 511 that supports the roller 510 and the supporting base end portion 511B that serves as the rotation fulcrum of the roller supporting portion 511 are used to move the support device 50. They are arranged at different positions in the direction (front-rear direction). In addition, the support base end portion 511B is arranged inside the support tip portion 511A in the left-right direction. Therefore, the main winding rope 21 can be released from the pair of rollers 510 against the biasing force of the spring 518 by rotating the pair of support base end portions 511B by the third motor M3.

15 and 16 are partially see-through plan views of a support device 50 according to a second modified embodiment of the invention. As shown in FIG. 15, the support device 50 may include a center link 516, a coil spring 516B, a pair of left and right first side links 517, and a pair of left and right second side links 519. The coil spring 516B is fitted around the outer periphery of the fulcrum 516A. Similar to the spring 518 of the first modified embodiment, the coil spring 516B is arranged such that the tip portions (arm tip portions) of the pair of roller support portions 511 approach each other in the left-right direction (facing direction). The pair of left and right roller support portions 511 are biased via the side link 517 and the second side link 519 .

A pair of left and right first side links 517 are rotatably connected to both ends of the center link 516 , and a pair of left and right second side links 519 are rotatably connected to the tip portions of the pair of left and right first side links 517 . connected as possible. Further, the distal end portions of the pair of left and right second side links 519 are connected to the distal end portions of the roller support portions 511 .

In the state shown in FIG. 15, the biasing force of the coil spring 516B applies a force to the roller support portion 511 so that the rollers 510 approach each other. On the other hand, when a motor similar to the third motor M3 (FIG. 14) of the previous modified embodiment rotates the center link 516 in the direction of the arrow in FIG. The pair of left and right roller support portions 511 rotates so that the rollers 510 are separated from each other (see arrows in FIG. 16). As a result, the main winding rope 21 is released from the pair of left and right rollers 510 .

FIG. 17 is a partially see-through plan view of a support device 50 according to a third modified embodiment of the invention. As shown in FIG. 17, a pair of left and right links 520 may be connected to each other so as to be bendable with a fulcrum 520A as a fulcrum. When the rod 521 extending forward from the fulcrum 520A is pulled forward by a driving portion (not shown), the pair of left and right roller support portions 511 rotate against the biasing force of the spring 518 so that the pair of left and right rollers 510 approach each other. can move and grip the main hoist rope 21. Thus, in this modified embodiment, the linear motion of the rod 521 can provide a strong gripping force to the pair of rollers 510 .

FIG. 18 is a partially see-through plan view of a support device 50 according to a fourth modified embodiment of the invention. As shown in FIG. 18, an embodiment may be provided with a telescopic cylinder 522 that connects the tip portions of the pair of left and right roller support portions 511 to each other. , and a cylinder body 522B connected to the roller support portion 511 on the right side. In the state of FIG. 18, a predetermined gap is formed between the pair of left and right rollers 510 . Then, when the cylinder rod 522A of the telescopic cylinder 522 contracts with respect to the cylinder main body 522B, the outer peripheral surfaces of the pair of left and right rollers 510 approach each other, and the main winding rope 21 can be gripped. Thus, in this modified embodiment, the direct power of the telescopic cylinder 522 enables the pair of rollers 510 to have a strong gripping force.

19 and 21 are plan views of a support device 50 according to a fifth modified embodiment of the invention. 20 and 22 are side views of the support device 50 according to this modified embodiment. In this modified embodiment, the support device 50 further includes a rear guide 523 (rear end side guide portion) and a telescopic cylinder 524 . The rear guide 523 is arranged at the rear portion of the main body portion 50H. The rear guide 523 has a rear guide body 523A and a rear guide support portion 523B. The rear guide main body 523A is a triangular plate member in a plan view. In addition, ribs 523H (FIG. 21) protruding upward are arranged on both left and right edges of the rear guide main body 523A. The rear guide support portion 523B connects the rear guide main body 523A and the main body portion 50H and supports the rear guide main body 523A.

The rear guide 523 is supported by the main body portion 50H on the upstream side in the moving direction of the support device 50 from the grip portion 50A, is arranged below the main hoist rope 21, can support the main hoist rope 21, and is attached to the grip portion 50A. The main hoisting rope 21 is guided toward. According to such a configuration, the main hoisting rope 21 sent out from the main hoisting winch 20 can be easily guided to the gripping portion 50A in a state where the support device 50 is arranged on the scaffolding 100 on the base end side of the boom 16. It becomes possible to As a result, the operation of gripping the main hoisting rope 21 by the support device 50 can be easily realized.

Furthermore, in this modified embodiment, as shown in FIG. 22, the rear guide support portion 523B (FIG. 20) has a telescopic cylinder 524 (rear end side guide driving portion). The telescopic cylinder 524 can move the rear guide 523 up and down. The base end portion of the telescopic cylinder 524 is connected to the body portion 50H, and the distal end portion of the telescopic cylinder 524 is connected to the lower surface of the rear end portion of the rear guide body 523A. In addition, it is desirable that the distal end portion of the telescopic cylinder 524 be rotatably supported around a horizontal rotation axis with respect to the rear guide main body 523A. When the telescopic cylinder 524 extends, as shown in FIG. 22, the rear end of the rear guide main body 523A is pushed upward.

When the support device 50 reaches the tip portion of the boom 16 in the scaffolding 100, the pair of left and right rollers 510 are rotated to send out the main hoisting rope 21 forward. A worker waiting near the tip of the boom 16 receives the tip of the main hoisting rope 21 and passes it over another idler sheave unit 150 (see FIG. 25). Furthermore, in order to detach the support device 50 from the tip of the boom 16, the pair of left and right roller support portions 511 are rotated so that the pair of left and right rollers 510 are separated from each other.

At this time, if a portion of the main hoisting rope 21 is positioned between the pair of left and right rollers 510, the support device 50 is likely to interfere with the main hoisting rope 21, making it difficult to separate the support device 50 from the scaffolding 100. . Therefore, in this modified embodiment, as shown in FIG. 22, the telescopic cylinder 524 is extended by a predetermined command signal, and the rear end portion of the rear guide main body 523A is pushed upward. As a result, the main winding rope 21 positioned between the pair of left and right rollers 510 is pushed up to a position higher than the rollers 510 and separated from the gripping portion 50A (Fig. 22). As a result, the running portion 50B of the support device 50 allows the support device 50 to move laterally below the main hoist rope 21 (FIG. 22) as indicated by the arrow in FIG. Therefore, it is possible to easily detach the support device 50 from the main hoisting rope 21 .

FIG. 23 is a plan view of a support device 50 according to a sixth modified embodiment of the invention. 24 and 25 are side views of the support device 50 according to this modified embodiment.

In this modified embodiment, the support device 50 further includes a front guide 525 (tip-side guide portion) and a telescopic cylinder 526 (tip-side guide driving portion). The front guide 525 is arranged at the front portion of the main body portion 50H. The front guide 525 is a triangular plate member in plan view. In addition, it is desirable that ribs protruding upward are also arranged on both left and right edges of the front guide 525 . The telescopic cylinder 526 connects the central portion of the front guide 525 in the front-rear direction and the body portion 50H, and supports the rear guide body 523A. Note that, as shown in FIG. 24, the rear end portion of the front guide 525 is rotatably supported by a bearing 525A arranged in the main body portion 50H.

The front guide 525 is supported by the main body portion 50H on the downstream side of the movement direction of the support device 50 from the grip portion 50A, is arranged below the main hoist rope 21 and can support the main hoist rope 21, and is forward (support device 50 (moving direction downstream side). According to such a configuration, when the support device 50 reaches the target position on the boom 16, it becomes possible to easily guide the main hoist rope 21 to, for example, the idler sheave unit 150 (FIG. 25). As a result, the transfer work of the main hoisting rope 21 at the tip of the boom 16 can be easily realized.

Also, the telescopic cylinder 526 can move the front guide 525 up and down by telescopic motion.

As described above, when the support device 50 reaches the tip of the boom 16 of the scaffolding 100, the pair of left and right rollers 510 is rotated to feed the main hoisting rope 21 forward, leading to the front guide 525 (FIG. 24). ) is guided forward. Furthermore, as shown in FIG. 25, the telescopic cylinder 526 is extended by a predetermined command signal, and the front end of the front guide 525 is pushed upward. As a result, the leading end of the main hoisting rope 21 can be easily transferred to the idler sheave unit 150 arranged at the leading end of the boom 16 . In addition, by moving the front guide 525 up and down according to the height and posture of the worker waiting on the boom 16 and the height of other sheaves, the main hoisting rope 21 released from the grip portion 50A can be moved as described above. It can be handed over more stably to a worker or the like.

FIG. 26 is a cross-sectional view showing a braking mechanism of a support device 50 according to a seventh modified embodiment of the invention. In the previous embodiment, the structure of the lock mechanism 515 as shown in FIGS. 10 and 11 has been described. In this modified embodiment, the lock mechanism 515 has a lock body portion 515A and a pair of upper and lower lock levers 515B. The lock lever 515B is supported by the lock main body 515A so as to be vertically swingable about a horizontal rotary shaft. The pair of upper and lower lock levers 515B can hold a portion of the roller 510 in the circumferential direction from above and below. A well-known brake pad or the like is fixed to a portion of the tip portion of the lock lever 515B that faces the roller 510. As shown in FIG. According to such a configuration, in a state in which the pair of left and right rollers 510 grip the main winding rope 21, the pair of upper and lower lock levers 515B sandwich the rollers 510 from above and below, thereby preventing the rotation of the rollers 510. can. In particular, in this modified embodiment, the above-described brake pad can come into contact with the roller 510 to brake the roller 510 regardless of the rotational position of the roller 510 .

FIG. 27 is a plan view showing a braking mechanism of a support device 50 according to an eighth modified embodiment of the invention. FIG. 28 is a cross-sectional view showing the braking mechanism of the support device 50 according to this modified embodiment. In this modified embodiment, the grip portion 50A of the support device has a pair of left and right splines 527, a support bracket 528, and a fourth motor M4 (FIG. 28). A pair of left and right splines 527 are fixed to the motor shaft MG of the first motor M1 below the roller support portion 511 .

The support bracket 528 is arranged inside the body portion 50H between the left and right roller support portions 511 . The support bracket 528 has a bracket body 528A, a slider 528B and a pinion 528C. The bracket main body 528A is fixed to the main body portion 50H. The slider 528B is supported by the bracket main body 528A so as to be slidable in the front-rear direction. A rack gear 528H that engages with the pinion 528C is formed on the slider 528B. The pinion 528C is connected to the fourth motor M4 and rotates around the horizontal axis by receiving the rotational driving force of the fourth motor M4. When the slider 528B slides rearward due to the rotation of the pinion 528C, a pair of left and right projections 528K (FIG. 27) arranged at the rear end of the slider 528B engage with a pair of left and right splines 527. As shown in FIG. As a result, the rotation of the left and right motor shafts MG is blocked, and the rotation of the roller 510 is blocked. In addition, in this modified embodiment, the braking mechanism is arranged in the main body portion 50H. Therefore, compared to the case where the roller support portion 511 is provided with a braking mechanism, the center of gravity of the support device 50 can be lowered, and overturning of the support device 50 can be suppressed.

FIG. 29 is a plan view of a support device 50 according to a ninth modified embodiment of the invention. FIG. 30 is a side view of the support device 50 according to this modified embodiment. In the first embodiment described above, the supporting device 50 has a pair of left and right rollers 510 as shown in FIG. 3 . In this modified embodiment, the support device 50 includes two pairs of left and right rollers 510 , a pair of left and right roller support portions 511 , and a pair of left and right belts 512 . A pair of rollers 510 are rotatably supported in front and rear of a pair of left and right roller support portions 511 . Further, when the pulleys 511C in the pair of left and right roller support portions 511 are respectively rotated, the front, rear, left, and right rollers 510 rotate via the left and right belts 512, respectively. In such a configuration as well, the main winding rope 21 is gripped and held by the four rollers 510 on the front, rear, left, and right sides by moving the pair of left and right roller support portions 511 away from each other in the left and right direction in a structure similar to that of the first embodiment. It is possible to open. In addition, the rotation of the left and right belts 512 rotates the four rollers 510 on the front, rear, left, and right sides, making it possible to send out the pinched main winding rope 21 forward.

<Second embodiment>
Next, a second embodiment of the invention will be described. FIG. 31 is a side view of the support device 60 according to this embodiment. FIG. 32 is a plan view of the support device 60 according to this embodiment. FIG. 33 is a plan view showing how the support device 60 according to the present embodiment runs on the crank portion 100C of the scaffolding 100 on the boom 16. FIG.

Also in this embodiment, the support device 60 includes a grasping portion 60A and a traveling portion 60B including a main body portion 60H, as in the first embodiment.

The gripping section 60A has a gripping unit 610, a turning unit 620, and a fifth motor M5 (FIG. 31). The gripping unit 610 is a part of the support device 60 that can grip and release the main hoisting rope 21 . The swivel unit 620 supports the gripping unit 610 . The turning unit 620 has a circular shape in plan view, and is attached to the upper surface of the main body 60H. The turning unit 620 is rotatable around a rotation axis extending in the vertical direction. As shown in FIG. 31, the fifth motor M5 is arranged inside the body portion 60H, and the output shaft of the fifth motor M5 is fixed to the turning unit 620. As shown in FIG. The fifth motor M5 is rotatable in a third rotation direction and a fourth rotation direction opposite to the third rotation direction. It rotates relative to 60H in each rotation direction.

According to such a configuration, as shown in FIG. 33, when the support device 60 reaches the crank portion 100C (FIG. 2) of the scaffolding 100, the traveling portion 60B changes the traveling direction of the support device 60 from the front to the right. drive to switch to At this time, the turning unit 620 is moved relative to the traveling portion 60B (main body portion 60H) so that the direction in which the main hoisting rope 21 extends does not change, that is, so that the main hoisting rope 21 continues to extend along the front-rear direction. rotates 90 degrees. As a result, bending and damage to the main hoisting rope 21 are suppressed compared to the case where the turning unit 620 does not relatively rotate.

In addition, when the turning unit 620 is rotatable relative to the gripping unit 610 as in this embodiment, it is possible to flexibly cope with changes in the release point of the main hoisting winch 20 (the position at which the main hoisting rope 21 is paid out). can be done. That is, in FIG. 2 , the position at which the main hoisting rope 21 is paid out from the main hoisting winch 20 moves left and right on the drum of the main hoisting winch 20 . As a result, the main hoisting rope 21 extending from the main hoisting winch 20 to the support device 60 alternately inclines left and right with respect to the longitudinal direction (the direction in which the boom 16 extends). If the turning unit 620 cannot turn, the portion of the main hoisting rope 21 that is gripped by the gripping unit 610 bends alternately to the left and right sides. On the other hand, when the turning unit 620 can turn relative to the gripping unit 610 as in the present embodiment, the traveling part 60B travels (straight ahead) on the scaffolding 100 along the front-rear direction, while the turning unit 620 moves toward the main hoist winch. 20 so as to adjust the posture of the gripping unit 610 along the direction in which the main hoisting rope 21 is paid out. Therefore, bending of the main hoisting rope 21 as described above is suppressed, and damage to the main hoisting rope 21 is prevented.

That is, in the present embodiment, the turning unit 620 (connecting portion) connects the gripping portion 60A and the traveling portion 60B to each other so that the gripping unit 610 of the gripping portion 60A can be relatively displaced with respect to the traveling portion 60B. More specifically, the turning unit 620 rotates the gripping portion 60A and the traveling portion 60B relative to the traveling portion 60B about a vertical axis extending in a direction perpendicular to (intersecting) the traveling surface. and the traveling portion 60B are connected to each other. Then, the fifth motor M5 (FIG. 31) (driving portion) displaces the gripping portion 60A relative to the traveling portion 60B.

Therefore, by changing the relative positional relationship between the gripping portion 60A and the running portion 60B according to the movement of the running portion 60B and the main hoisting rope 21, an increase in the tension of the main hoisting rope 21 during running is suppressed. Meanwhile, the main hoist rope 21 can be arranged on the boom 16 . Further, the driving force of the fifth motor M5 can positively displace the gripping portion 60A relative to the traveling portion 60B. Note that the turning unit 620 may be supported so as to be able to turn (rotate) with respect to the traveling portion 60B without receiving the driving force of the fifth motor M5. In this case, the tension on the main hoisting rope 21 is increased by turning the turning unit 620 with respect to the traveling portion 60B according to the direction of the main hoisting rope 21 between the main hoisting winch 20 and the gripping portion 60A. deterred.

34 and 35 are cross-sectional views of the grasping portion 610 of the support device 60 according to this embodiment. FIG. 36 is a schematic cross-sectional view showing how the grasping portion 610 of the support device 60 feeds out the main hoisting rope 21. As shown in FIG. FIG. 37 is a cross-sectional view of the grasping portion 610 of the support device 60. As shown in FIG. 38A and 38B are a front view and a side view, respectively, of the first pressing pin 612 of the support device 60. FIG.

The grasping unit 610 has a unit body 611 (holding member), a first pressing pin 612 (pressing member), a second pressing pin 613 (pressing member), and a third pressing pin 614 (pressing member).

The unit main body 611 is a main body portion of the gripping unit 610 and is composed of a cylindrical member surrounding an internal space through which the main hoist rope 21 is allowed to pass. A first pressing pin 612, a second pressing pin 613, and a third pressing pin 614 press the main winding rope 21 inserted into the internal space from different directions. Each includes 3 pressing rollers 614S (both are pressing portions), and these pressing rollers are supported by the unit body 611 so as to be movable along the direction of contacting and separating from the main hoisting rope 21 (radial direction of the main hoisting rope 21). It is In this embodiment, as shown in FIGS. 34 and 35, the first pressing pin 612 (predetermined pressing member) is supported on the lower portion of the unit main body 611 so as to be vertically movable. In addition, the second pressing pin 613 and the third pressing pin 614 are arranged obliquely above the first pressing pin 612 . That is, these pressing pins are arranged at different positions in the circumferential direction. The main hoist rope 21 can be stably gripped by moving the three (plural) pressing pins along the radial direction in this manner.

As shown in FIG. 38, the first pressing pin 612 has a pin body portion 612A and a pin extension/contraction portion 612B. The first pressing pin 612 has a known cylinder structure, and receives a driving force generated by a driving portion (pressing member driving portion) similar to the seventh motor M7 (FIG. 47) described later, and the pin expandable portion The first pressing pin 612 expands and contracts due to the relative movement of 612B with respect to the pin body portion 612A. The expansion and contraction structure of the second pressing pin 613 and the third pressing pin 614 is the same as that of the first pressing pin 612 .

Each of the first pressing roller 612S, the second pressing roller 613S, and the third pressing roller 614S is provided with a first pressing pin so as to be rotatable about an axis extending in a direction orthogonal (crossing) to the moving direction of the support device 60. 612, a second pressing pin 613 and a third pressing pin 614, respectively. Therefore, when the support device 60 reaches the target position on the boom 16, the main hoisting rope 21 can be easily extracted from the gripping portion 60A (gripping unit 610). In addition, it is desirable that these pressing rollers are made of an elastic member. In this case, damage to the main hoisting rope 21 is suppressed. In addition, as shown in FIG. 37, the first pressing roller 612S that supports the lower portion of the main hoisting rope 21 has an outer peripheral shape with a concave central portion, so that the main hoisting rope 21 is stably held. can do. These pressure rollers may be idler rollers that can idle, but it is desirable that they have the function of sending out the main winding rope 21 as in the first embodiment. In this embodiment, the gripping unit 610 has a sixth motor M6 (pressing roller driving section) that rotates the first pressing roller 612S (FIG. 38). As shown in FIG. 36, the sixth motor M6 rotates the first pressure roller 612S about the axis, thereby moving the main winding rope 21 along with the second pressure roller 613S and the third pressure roller 614S downstream in the moving direction. It becomes possible to send out to the side (forward) (moving the main winding rope 21 relative to the running portion 60B). Therefore, when the support device 60 reaches the tip of the boom 16, the main hoisting rope 21 can be easily transferred (sent out) to the operator or the idler sheave unit 150 (see FIG. 25).

It is desirable that the first pressure roller 612S, the second pressure roller 613S, and the third pressure roller 614S are provided with a braking mechanism (not shown) having the same function as the lock mechanism 515 described above. The braking mechanism is switchable between a permitting state in which the pressing rollers of the plurality of pressing pins grip the main winding rope 21 and a braking state in which the rotation is blocked, In the allowable state, the main hoisting rope 21 is caused to move relative to the running portion 60B by the pressing roller, and in the braking state, the pressing rollers of the plurality of pressing members continue to grip the main hoisting rope 21 . In this case, in the braking state of the braking mechanism, erroneous dropout of the gripped main hoisting rope 21 while the support device 60 is running is suppressed. As an example, a friction member such as a known brake pad is pressed against the peripheral surface or side surface of each pressing roller, thereby applying braking force (braking force) to each roller as necessary. Alternatively, a plurality of irregularities such as known splines may be formed on the outer peripheral surface of the rotating shaft of each pressing roller, and the braking force may be applied by engaging the claw members with the irregularities.

Further, the unit main body 611 has a unit fixing portion 611A (fixed portion) and a unit opening/closing portion 611B (movable portion) (FIG. 34). The unit fixing portion 611A defines a part of the internal space within a range of approximately 270 degrees in the circumferential direction of the unit main body 611 . The unit opening/closing portion 611B is arranged at the upper end portion of the unit main body 611 and defines a part of the internal space together with the unit fixing portion 611A. It defines part of the space.

The unit opening/closing portion 611B is rotatable (relatively movable) with respect to the unit fixing portion 611A with a fulcrum portion 611C serving as a fulcrum. can be switched between the closed state and the closed state. According to such a configuration, when the support device 60 reaches the tip of the boom 16, the operator rotates the unit opening/closing portion 611B with respect to the unit fixing portion 611A, thereby gripping the main hoisting rope 21. It can be detached from unit 610 . In other words, since the unit main body 611 of the gripping unit 610 surrounds the main hoisting rope 21 while the support device 60 is running, the main hoisting rope 21 is prevented from being detached from the gripping unit 610 . Further, the unit opening/closing part 611B opens the internal space upward in the open state so that the main hoist rope 21 can be separated upward from the internal space.

Next, modified embodiments of the present invention will be described based on the above-described second embodiment. Further, the following modified embodiments are not limited to the support device 60 according to the second embodiment, but can also be applied to support devices according to other embodiments described later.

FIG. 39 is a side view of a support device 70 according to a tenth modified embodiment of the invention. 40 is a plan view of the support device 70. FIG. 41 and 42 are side views showing how the support device 70 overcomes an obstacle. Also in this modified embodiment, the support device 70 includes a grip portion 70A and a traveling portion 70B including a main body portion 70H, as in the second embodiment. In the second embodiment, the grasping unit 610 is supported on the top surface of the turning unit 620. In this modified embodiment, the grasping unit 70A includes a grasping unit 711, a turning unit 712, and a pair of left and right arms. and a swing shaft 714 . The turning unit 712 can turn (relatively rotate) with respect to the main body 70H. A pair of left and right brackets 713 are arranged on the upper surface of the turning unit 712 with a space therebetween. The swing shaft 714 is a shaft portion that extends orthogonally (intersecting) with the brackets 713 and connects the pair of left and right brackets 713 .

In this modified embodiment, a gripping unit 711 having a structure similar to that of the gripping unit 610 according to the second embodiment is swingably held by a swing shaft 714 . In particular, the gripping unit 711 is rotatably supported by the swing shaft 714 so that it can be rotated by the tension of the main hoisting rope 21 or the weight of the main hoisting rope 21 depending on the posture of the support device 70 . ing. As the support device 60 travels over the platform 100 of the boom 16, there may be obstacles such as the guide roller unit 164 of FIG. The support device 60 cannot continue traveling on the scaffolding 100 unless it climbs over the guide roller unit 164 . Therefore, as shown in FIGS. 41 and 42, the support device 70 travels over the guide rollers 164A by the crawlers of the traveling portion 70B. At this time, since the gripping unit 711 that grips the main hoisting rope 21 can swing about the swing shaft 714, the main hoisting rope 21 is held substantially horizontally in the gripping unit 711, and the posture of the main hoisting rope 21 is Hard to change. Therefore, the main hoisting rope 21 is hardly subjected to excessive force and load, and the main hoisting rope 21 can be stably pulled and guided.

That is, in this modified embodiment, the bracket 713 and the swing shaft 714 (both connecting portions) are arranged so that the gripping unit 711 of the gripping portion 70A can be relatively displaced with respect to the traveling portion 70B. 70B to each other. More specifically, the bracket 713 and the swing shaft 714 are arranged so that the gripping portion 70A is relative to the traveling portion 70B about a horizontal axis extending in a direction orthogonal (crossing) to the moving direction and parallel to the traveling surface. The grip portion 70A and the running portion 70B are connected to each other so that they can rotate freely.

Therefore, by changing the relative positional relationship between the gripping portion 70A and the running portion 70B according to the movement of the running portion 70B and the main hoisting rope 21, an increase in the tension of the main hoisting rope 21 during running is suppressed. Meanwhile, the main hoist rope 21 can be arranged on the boom 16 .

In addition, when the function like this modified embodiment is not provided, the operator may remove the guide roller 164A of the guide roller unit 164 from the bracket 164B in advance. Further, the gripping unit 711 is not limited to swinging about the swinging shaft 714 by the tension of the main hoisting rope 21 or the weight of the main hoisting rope 21. 714 may be provided with a drive source for rotating by a predetermined angle. In this case, since the drive source displaces the gripping portion 70A relative to the traveling portion 70B, the driving force of the driving source can positively displace the gripping portion 70A relative to the traveling portion 70B. .

43A and 43B are cross-sectional views (A) and (B) of a grip portion of a support device according to an eleventh modified embodiment of the present invention. In the second embodiment described above, the main hoisting rope 21 is taken out by the operator after the unit opening/closing portion 611B is rotated. In this modified embodiment, as shown in FIGS. 43A and 43B, the extension stroke of the first pressing pin 612 is set larger than that in the second embodiment. In this modified embodiment, the unit opening/closing part 611B opens the internal space upward in the open state so that the main hoist rope 21 can be separated upward from the internal space. The first pressing pin 612 (predetermined pressing member) is configured to be able to push up the main hoisting rope 21 arranged in the internal space to a position where it leaves the internal space in the open state of the unit opening/closing portion 611B. In addition, it is supported by the lower portion of the unit main body 611 so as to be vertically movable. In addition, the upper end of the first pressing pin 612 (the first pressing roller 612S) can be raised to a position higher than the upper end of the unit fixing portion 611A. A passage space for the first pressing pin 612 is secured between the pressing pin 613 and the third pressing pin 614 (FIG. 43(B)). According to such a configuration, when the support device 60 reaches the target position on the boom 16, the main hoisting rope 21 is separated from the gripping portion 60A by opening the unit opening/closing portion 611B. can be done. On the other hand, since the cylindrical unit body 611 surrounds the main hoisting rope 21 while the support device 60 is running, the main hoisting rope 21 is prevented from being detached from the gripping portion 60A. In another modified embodiment, the unit opening/closing portion 611B has a drive source that generates a driving force to rotate with respect to the unit fixing portion 611A. may be realized remotely.

FIG. 44 is a plan view of a support device 70 according to a twelfth modified embodiment of the invention. In addition, in FIG. 44, the illustration of the holding portion is omitted. In this modified embodiment, the support device 70 includes a front guide 720 , a rotating shaft 722 , and a pair of left and right brackets 723 . The front guide 720 is supported by the main body portion 70H downstream of the grip portion in the moving direction of the support device 70, is arranged below the main hoisting rope 21, is capable of supporting the main hoisting rope 21, and can support the main hoisting rope 21. to the downstream side in the direction of movement. Ribs 721 for preventing the main hoist rope 21 from falling off are arranged on both left and right side edges of the front guide 720 .

A pair of left and right brackets 723 are fixed to the turning unit 712 . The rotating shaft 722 is a shaft portion that connects a pair of left and right brackets 723 . The front guide 720 can swing up and down with a rotating shaft 722 as a fulcrum. As a result, like the support device 50 shown in FIG. 25, the main hoisting rope 21 can be stably delivered to the worker waiting on the tip side of the boom 16 and the idler sheave unit 150 . Also in this modified embodiment, a telescopic cylinder (not shown) or the like for moving the front guide 720 up and down may be arranged.

<Third Embodiment>
Next, a support device 80 according to a third embodiment of the invention will be described. FIG. 45 is a side view of the support device 80 according to this embodiment. 46 is a plan view of the support device 80. FIG. 47 is a rear view of the support device 80. FIG. 48A and 48B are side views (A) and (B) of the grip portion of the support device 80. FIG. 49A and 49B are side views (A) and (B) showing how the gripping portion of the support device 80 grips the main hoisting rope 21. FIG.

The support device 80 according to the present embodiment includes a grasping portion 80A and a traveling portion 80B including a body portion 80H, which have the same functions as those of the first embodiment, and further includes a feeding portion 80C.

The gripping portion 80A is supported (connected) to the front portion of the main body portion 80H, and is capable of gripping the main hoisting rope 21 let out from the main hoisting winch 20 and releasing the main hoisting rope 21. It is said that The traveling part 80B can travel on the upper surface (scaffolding 100) of the boom 16 in a fallen state in at least the movement direction from the base end to the tip end of the boom 16. As shown in FIG.

In this embodiment, the gripping portion 80A includes a support portion 810 (supporting body), an upper gripping claw 812 and a lower gripping claw 813 (a pair of gripping members), and an eighth motor M8 (FIG. 49). The support portion 810 extends upward from the body portion 80H. The upper gripping claw 812 and the lower gripping claw 813 are attached to the support portion 810 so as to face each other at the upper end portion of the support portion 810 . As shown in FIG. 48, the upper gripping claw 812 has two claws, and the lower gripping claw 813 has one claw that enters between the two claws. In addition, the upper gripping claw 812 and the lower gripping claw 813 are the inner peripheral surface that constitutes the gripping surface, and when viewed in a cross section perpendicular to (intersecting) the direction in which the main hoisting rope 21 extends, the outer circumference of the main hoisting rope 21 At least one of the upper gripping claw 812 and the lower gripping claw 813 has a horizontal axis with respect to the other gripping claw ( It is relatively rotatable around a predetermined rotation axis. The gripping surface of the upper gripping claw 812 contacts the main hoisting rope 21 from one end in the gripping direction orthogonal (crossing) to the front-rear direction, and the gripping surface of the lower gripping claw 813 contacts the other end of the gripping direction. It is arranged so as to contact the main hoisting rope 21 from the side. Specifically, as shown in FIG. 49A, in this embodiment, the upper gripping claw 812 can rotate up and down around a horizontal axis by receiving the driving force of the eighth motor M8 (claw driving section). It is said that When the upper gripping claw 812 rotates so that the upper gripping claw 812 and the lower gripping claw 813 approach each other, the main hoist rope 21 can be gripped by the gripping surfaces of the upper gripping claw 812 and the lower gripping claw 813. When the upper gripping claw 812 rotates so that the gripping claw 812 and the lower gripping claw 813 are separated from each other, the main winding rope 21 is released from the upper gripping claw 812 and the lower gripping claw 813 . As a result, as shown in FIG. 49B, the main hoisting rope 21 can be stably gripped and released between the upper gripping claw 812 and the lower gripping claw 813 . In addition, the gripping surfaces of the upper gripping claw 812 and the lower gripping claw 813 are arranged so as to grip the main hoisting rope 21 at different positions in the direction in which the main hoisting rope 21 extends (the front-rear direction) (FIG. 48). . Therefore, the upper gripping claws 812 and the lower gripping claws 813 do not interfere with each other, and the upper gripping claws 812 are adjusted according to the amount of entry of one of the lower gripping claws 813 between the two claws of the upper gripping claws 812 . and the lower gripping claw 813 changes. Therefore, as shown in FIGS. 48A and 48B, the gripping portion 80A can stably grip main hoist ropes 21 having various diameters different from each other.

The main hoisting rope 21 may be gripped by rotating the lower gripping claw 813 up and down under the driving force of the eighth motor M8. The main winding rope 21 may be gripped by rotating both the lower gripping claw 812 and the lower gripping claw 813 . Further, without providing the eighth motor M8, the operator manually grips the main hoist rope 21 between the upper gripping claw 812 and the lower gripping claw 813 at the base end of the boom 16, and at the tip of the boom 16 The operator may release the main winding rope 21 from the upper gripping claw 812 and the lower gripping claw 813 .

45 to 47, the feeding portion 80C is supported by the rear portion of the body portion 80H. The feeding unit 80C includes an upper roller 851 and a lower roller 852 (a pair of rollers and a pair of gripping members) respectively arranged on a pair of center lines extending in the left-right direction (direction perpendicular to (intersecting) the moving direction), It includes an upper roller support portion 851S, a lower roller support portion 852S, and a seventh motor M7 (FIG. 47) (driving source). The outer peripheral surfaces of the upper roller 851 and the lower roller 852 are mutually convex curved surfaces (circumferential surfaces) when viewed from the direction parallel to the center line (the direction intersecting the direction in which the main winding rope 21 extends). Further, the upper roller support portion 851S and the lower roller support portion 852S are arranged such that the outer peripheral surfaces of the upper roller 851 and the lower roller 852 face each other in the vertical direction (the direction intersecting the movement direction). Each roller 852 is supported. The main winding rope 21 is sandwiched between the outer peripheral surface of the upper roller 851 and the outer peripheral surface of the lower roller 852 . In order to prevent damage to the gripped main winding rope 21, the upper roller 851 and the lower roller 852 are desirably made of an elastic member.

Referring to FIG. 47, the upper roller support portion 851S (cylinder) has an extendable rod 851S1 that supports the rotating shaft 851A and a cylinder main body 851S2 that is supported by the main body portion 80H. The telescopic rod 851S1 receives the driving force of the seventh motor M7 (driving source) and moves (extends and contracts) in the vertical direction with respect to the cylinder main body 851S2. The rotating shaft 851A extends in the left-right direction and functions as a shaft portion for rotating the upper roller 851 . Similarly, the lower roller support portion 852S (cylinder) has an extendable rod 852S1 that supports the rotating shaft 852A and a cylinder main body 852S2 that is supported by the main body portion 80H. The telescopic rod 852S1 receives the driving force of the seventh motor M7 and moves (extends and contracts) in the vertical direction with respect to the cylinder main body 852S2. The rotating shaft 852A extends in the left-right direction and functions as a shaft portion for rotating the lower roller 852. As shown in FIG. Thus, in this embodiment, a pair of rollers are arranged to face each other in the vertical direction, and the main winding rope 21 is gripped between the pair of rollers. Therefore, even if the lateral width of the support device 80 is small and the travel width on the boom 16 is significantly restricted, the support device 80 can travel on the boom 16 .

In addition, a gear mechanism (not shown) that transmits the driving force of the seventh motor M7 to the upper roller 851 and the lower roller 852 as rotational driving force is arranged inside the upper roller supporting portion 851S and the lower roller supporting portion 852S. . The driving force of the seventh motor M7 can be selectively transmitted to the rotating motion of the upper roller 851 and the lower roller 852, the telescopic motion of the upper roller supporter 851S, and the telescopic motion of the lower roller supporter 852S. As shown, an electromagnetic clutch (not shown) is provided inside the body portion 50H. As described above, in this embodiment, the main winding rope 21 can be gripped and released by the pair of rollers by extending and contracting the respective cylinders by the seventh motor M7.

When the support device 80 is arranged at the initial position on the base end side of the boom 16, the main hoisting rope 21 let out from the main hoisting winch 20 is inserted between the upper roller 851 and the lower roller 852 of the feed section 80C. be. At this time, it is not necessary for the upper roller 851 and the lower roller 852 to strongly grip the main winding rope 21, and both rollers may function as guide members. Furthermore, the tip of the main hoisting rope 21 is pulled out forward and gripped by the upper gripping claw 812 and the lower gripping claw 813 of the gripping portion 80A. In this state, when the support device 80 reaches the tip side of the boom 16 by traveling the traveling portion 80B, the main hoist rope 21 is strongly pinched by the upper roller 851 and the lower roller 852 first. Next, the upper gripping claw 812 of the gripping portion 80A is rotated upward, and the gripping force of the main winding rope 21 by the upper gripping claw 812 and the lower gripping claw 813 is released. Then, by rotating the upper roller 851 and the lower roller 852 in the direction of the arrow in FIG. 45, the leading end of the main winding rope 21 is fed further forward than the gripping portion 80A. As a result, it becomes possible to deliver the main hoisting rope 21 to a worker waiting at the tip of the boom 16, the idler sheave unit 150, or the like.

In this embodiment, a gripping portion 80A that grips the main hoisting rope 21 and a feeding portion 80C that feeds the main hoisting rope 21 forward are provided independently of each other. Therefore, the gripping portion 80A and the feeding portion 80C can be realized with a simple structure, and the main hoisting rope 21 can be securely gripped while the support device 80 is running, and the main hoisting rope 21 can be gripped at the intermediate portion and the tip portion of the boom 16. The wound rope 21 can be easily sent out to the idler sheave unit 150 and the operator.

In particular, in the present embodiment, the pair of rollers (upper roller 851 and lower roller 852) of the feeding section 80C is supported by the running section 80B, and the main winding rope 21 is moved relative to the running section 80B toward the leading end side in the moving direction. It is possible to move. In addition, the seventh motor M7 (roller movement driving section) can move at least one of the pair of rollers so that at least one roller comes into contact with and separates from the other roller. In addition, the seventh motor M7 (roller rotation drive unit) is configured so that the pair of rollers grips the main hoisting rope 21 and causes the pair of rollers to move the main hoisting rope 21 relative to the traveling portion 80B. At least one of the rollers is rotated. Therefore, the main hoist rope 21 can be reliably gripped by the gripping portion 80A while the traveling portion 80B is traveling. Further, when the traveling portion 80B travels, the support device 80 reaches the tip side of the boom 16 and the traveling portion 80B stops. can be moved to the tip side in the movement direction. Therefore, the main hoisting rope 21 can be easily transferred to a worker waiting at the tip of the boom 16 or a sheave arranged at the tip of the boom 16 . In particular, the main winding rope 21 can be moved relative to the running portion 80B by the relative contacting/separating motion and rotating motion of the pair of rollers.

Further, in the present embodiment, as shown in FIG. 45, the feeding section 80C is supported by the traveling section 80B on the rear end side in the moving direction of the support device 80 from the grip section 80A. Therefore, the feeding portion 80C is arranged between the main hoisting winch 20 and the gripping portion 80A that grips the main hoisting rope 21 . Therefore, it is possible to prevent the main hoist rope 21 from coming off from the feeding section 80C while the traveling section 80B is traveling.

In addition, in the assisting device 80 shown in FIG. 45, the feeding section 80C may also function as the grasping section 80A, and the grasping section 80A may function as the feeding guide section. In this case, the feeding section 80C grips the main hoisting rope 21 while the support device 80 is running. When the support device 80 eventually reaches the tip of the boom 16, the upper roller 851 and the lower roller 852 of the feed section 80C rotate to feed the main hoist rope 21 forward. At this time, the gripping portion 80A serves as a feed guide portion to guide the main hoisting rope 21 forward. Therefore, the gripping portion 80A need not grip the main hoisting rope 21 strongly.

In this case, the upper roller support portion 851S and the lower roller support portion 852S (FIG. 47) (both are connecting portions) are displaced relative to the upper roller 851 and the lower roller 852 of the feeding portion 80C (grip portion) with respect to the traveling portion 80B. Possibly a connection that connects the feeding section 80C and the running section 80B together. More specifically, the upper roller supporting portion 851S and the lower roller supporting portion 852S connect the feeding portion 80C and the traveling portion 80B so that the feeding portion 80C can move up and down relative to the traveling portion 80B. .

Therefore, by changing the relative positional relationship between the feed section 80C and the running section 80B according to the movement of the running section 80B and the main hoisting rope 21, an increase in the tension of the main hoisting rope 21 during running is suppressed. Meanwhile, the main hoist rope 21 can be arranged on the boom 16 . In particular, when the running body 80B climbs over an obstacle on the running surface as shown in FIG. can be suppressed, and an increase in the tension of the main winding rope 21 can be suppressed. Further, when the support device 80 is arranged on the base end side of the boom 16, the position of the feed section 80C can be adjusted according to the height of the main hoist winch 20 as described above. Further, when the support device 80 reaches the tip side of the boom 16, the position of the feeding section 80C can be adjusted according to the height of the operator and the height of other sheaves. As a result, the workability of transferring the main hoisting rope 21 in the support device 80 can be improved. In addition, even when the support device 80 reaches the tip end of the scaffold 100, the main hoisting rope 21 can be sent out further to the tip side, so that the operator waiting on the ground on the tip side of the boom 16 can It is also possible to deliver the winding rope 21.

Further, the support device 80 shown in FIG. 45 may be configured without the sending unit 80C. In this case as well, the support device 80 can run on the scaffolding 100 while holding the main hoist rope 21 by providing the support device 80 with the gripping portion 80A and the running portion 80B.

Next, modified embodiments of the present invention will be described based on the above-described third embodiment. Further, the modified embodiments below are not limited to the support device 80 according to the third embodiment, but can also be applied to support devices according to other embodiments described later.

50A and 50B are side views (A) and (B) showing how the gripping portion of the support device according to the thirteenth modified embodiment of the present invention grips the main hoist rope 21. FIG. In this modified embodiment, the gripping portion includes an upper gripping claw 812 , a lower gripping claw 813 , and a telescopic cylinder 814 . The telescopic cylinder 814 is composed of, for example, an electric cylinder. As shown in FIG. 50 , the lower gripping claws 813 may rotate relative to the upper gripping claws 812 in accordance with the telescopic motion of the telescopic cylinder 814 to grip and release the main hoist rope 21 . . Further, when the main hoisting rope 21 is gripped, a predetermined voltage continues to be applied to the telescopic cylinder 814, thereby acting as a braking function and preventing the main hoisting rope 21 from coming off. In addition, another pressing member may press the lower gripping claw 813 from below while the telescopic cylinder 814 is extended and the main hoisting rope 21 is gripped, so that the same braking function as described above may work.

FIG. 51 is a side view of a support device 80 according to a fourteenth modified embodiment of the invention. In this modified embodiment, the support portion 810 of the grip portion 80A has a cylinder structure that expands and contracts vertically as indicated by arrows. A driving source (driving section) (not shown) for extending and contracting the support section 810 is arranged in the running section 80B. In this case, the supporting portion 810 (connecting portion) connects the gripping portion 80A and the traveling portion 80B to each other so that the gripping portion 80A can be relatively displaced with respect to the traveling portion 80B. More specifically, the support portion 810 connects the gripping portion 80A and the running portion 80B so that the gripping portion 80A can move up and down relative to the running portion 80B.

Therefore, by changing the relative positional relationship between the gripping portion 80A and the running portion 80B according to the movement of the running portion 80B and the main hoisting rope 21, an increase in the tension of the main hoisting rope 21 during running is suppressed. Meanwhile, the main hoist rope 21 can be arranged on the boom 16 . Also in this modified embodiment, when the traveling body 80B climbs over an obstacle on the traveling surface as shown in FIG. Vertical movement of the main hoisting rope 21 can be suppressed, and an increase in the tension of the main hoisting rope 21 can be suppressed. Further, when the support device 80 is arranged on the base end side of the boom 16, the position of the gripping portion 80A can be adjusted according to the height of the main hoisting winch 20. FIG. In addition, according to such a configuration, when the support device 80 reaches the tip of the boom 16, the tip of the main hoisting rope 21 is pushed to the operator or the idler sheave unit 150 by expanding and contracting the support portion 810. can be delivered easily. As a result, the workability of transferring the main hoisting rope 21 in the support device 80 can be improved.

Also, FIG. 52 is a side view of a support device 80 according to a fifteenth modified embodiment of the present invention. As shown in FIG. 52, the claws of the gripping portion 80A (the upper gripping claw 812 and the lower gripping claw 813 in FIG. 48) may be supported by the supporting portion 810 so as to be rotatable around the horizontal axis. In this case, the upper gripping claw 812 and the lower gripping claw 813 are rotated around the shaft by receiving the driving force of the eighth motor M8. According to such a configuration, the leading end of the main hoisting rope 21 is arranged to extend toward the worker or the idler sheave unit 150, so that the main hoisting rope 21 can be delivered more easily. Further, as shown in FIG. 51, since the main hoisting rope 21 does not bend in the vicinity of the rear end portion of the gripping portion 80A, damage to the main hoisting rope 21 can be suppressed. Further, since the claw portion of the gripping portion 80A is rotatable with respect to the support portion 810, when the support device 80 overcomes an obstacle on the scaffolding 100, the main hoisting rope 21 is bent at the end portion of the gripping portion 80A. is deterred. As a result, it is possible to prevent load from being applied to the main hoisting rope 21 due to the rotation.

53 and 54 are side views of a support device 80 according to a sixteenth modified embodiment of the invention. In this modified embodiment, the support portion 810 is supported by the main body portion 80H so as to be rotatable back and forth with a horizontal support portion rotation shaft 810S as a fulcrum. As shown in FIG. 53 , the front end of the main hoisting rope 21 can be easily transferred to the operator or the idler sheave unit 150 by rotating the support 810 forward. At this time, the upper gripping claws 812 and the lower gripping claws 813 of the gripping portion 80A rotate relative to the support portion 810, thereby preventing the main hoist rope 21 from being bent or damaged. If an obstacle (not shown) is present at the tip of the boom 16, the support 810 rotates backward as shown in FIG. Interference with objects is prevented. In this case also, the upper gripping claw 812 and the lower gripping claw 813 of the gripping portion 80A rotate relative to the support portion 810, thereby preventing the main hoist rope 21 from being bent or damaged. Further, as shown in FIG. 54 , the main hoisting rope 21 let out from the main hoisting winch 20 at the base end of the boom 16 is gripped via the feeding portion 80C by the support portion 810 approaching the feeding portion 80C. It can be easily gripped by the portion 80A.

Also, FIG. 55 is a side view of a support device 80 according to an eighteenth modified embodiment of the present invention. In this modified embodiment, unlike the seventeenth modified embodiment described above, the feeding section 80C is supported by the main body section 80H so as to be rotatable back and forth about a horizontal rotation axis. According to such a configuration, as shown in FIG. By rotating 80C backward, the direction of the main hoisting rope 21 guided by the upper roller 851 and the lower roller 852 of the feed section 80C can be aligned with the direction in which the gripping section 80A grips the main hoisting rope 21. can. Therefore, the leading end of the main hoisting rope 21 can be easily transferred to the operator or the idler sheave unit 150, and damage to the main hoisting rope 21 can be further suppressed.

Also, FIG. 56 is a rear view of the feeding section 80C of the support device according to the nineteenth modified embodiment of the present invention. Also, FIG. 57 is a rear view of the feeding section 80C of the support device according to the twentieth modified embodiment of the present invention. As shown in FIG. 56, an upper roller support portion 851S that supports the upper roller 851 may be fixed to the main body portion 80H, and a lower roller support portion 852S that supports the lower roller 852 may extend and contract vertically. Further, as shown in FIG. 57, an upper roller support portion 851S that supports the upper roller 851 may be vertically expandable, and a lower roller support portion 852S that supports the lower roller 852 may be fixed to the main body portion 80H. . That is, at least one support portion (support member) of the upper roller support portion 851S and the lower roller support portion 852S moves (extends and contracts) along the vertical direction, so that there is a gap between the upper roller 851 and the lower roller 852. It is sufficient that the main winding rope 21 is gripped.

In the above-described third embodiment (FIG. 45), the support device 80 may not include the grasping section 80A, and the feeding section 80C may also function as the grasping section. In this case, the seventh motor M7 (FIG. 47), the upper roller support portion 851S, and the cylinder portion of the lower roller support portion 852S constitute the grip driving portion of the present invention. The cylinder portions of the seventh motor M7, the upper roller support portion 851S, and the lower roller support portion 852S are configured such that at least one of the upper roller 851 and the lower roller 852 is in contact with and separates from the other roller. At least one of the support portion 851S and the lower roller support portion 852S (a pair of support members) can be vertically moved. Even with such a configuration, the main winding rope 21 can be stably gripped between the upper roller 851 and the lower roller 852 . In addition, since the upper roller 851 and the lower roller 852 are relatively movable, main winding ropes 21 with various outer diameters can be gripped. At this time, as in the first embodiment, it is desirable to provide a braking mechanism that prevents the upper roller 851 and the lower roller 852 from rotating. In this case, when the support device 80 travels on the scaffolding 100 with the main hoisting rope 21 held by the feeding section 80C, the main hoisting rope 21 is prevented from falling off.

FIG. 58 is a side view of a support device 80 according to the twenty-first modified embodiment of the invention. As described above, when the gripping portion 80A also functions as the feeding portion 80C, in order to prevent the leading end of the main hoisting rope 21 from extending downward from the gripping portion 80A, in this modified embodiment, a support device 80 is provided with a front guide 861 (distal guide). The front guide 861 is supported by the body portion 80H downstream of the grip portion 80A in the moving direction of the support device 80, is arranged below the main hoisting rope 21, and can support the main hoisting rope 21. to the downstream side in the direction of movement. The front guide 861 has a guide body 862 , an extendable cylinder 863 and a guide support portion 864 . The guide main body 862 is rotatably supported by a guide support portion 864 about a horizontal rotation axis. The tip of the guide body 862 moves up and down according to the expansion and contraction of the expansion and contraction cylinder 863 .

59 and 60 are an enlarged side view and an enlarged rear view of a front guide 871 of a support device according to a twenty-second modified embodiment of the present invention. Instead of the front guide 861 shown in FIG. 58, a front guide 871 as shown in FIGS. 59 and 60 may be provided. The front guide 871 has a guide holding portion 872 , an extendable cylinder 873 and a guide support portion 874 . The extensible cylinder 873 swings back and forth with the guide support portion 874 as a fulcrum, so that the tip portion of the main hoist rope 21 can be moved back and forth. At this time, the guide holding portion 872 rotates relative to the telescopic cylinder 873, thereby preventing the main hoist rope 21 from being bent or damaged in the same manner as described above. Further, since the guide holding portion 872 has an arc-shaped holding surface as shown in FIG. 60, it is possible to restrict the lateral movement of the main hoisting rope 21 and guide the main hoisting rope 21 to a desired position. can.

<Fourth Embodiment>
Next, a support device 90 according to a fourth embodiment of the invention will be described. FIG. 61 is a plan view of the support device 90 according to this embodiment. 62 and 63 are side views of the support device 90. FIG.

In this embodiment, the support device 90 includes a grip portion 90A and a traveling portion 90B including a main body portion 90H.

The grip portion 90A is arranged behind the main body portion 90H and connected to the main body portion 90H via a connecting portion 912 . The gripping portion 90A can grip the main hoisting rope 21 let out from the main hoisting winch 20 (FIG. 2) and can release the main hoisting rope 21. As shown in FIG. The gripping portion 90A has a gripping unit 910, a pair of left and right support brackets 911, and a connecting portion 912. As shown in FIG.

The grasping unit 910 has the same structure as the grasping unit 610 (FIG. 34) according to the second embodiment. The gripping unit 910 is supported at the rear end portions of a pair of left and right support brackets 911 so as to be able to swing around a first fulcrum portion 911A extending in the left-right direction. In this embodiment, the gripping unit 910 swings with respect to the support bracket 911 due to the tension of the main hoisting rope 21 or the weight of the main hoisting rope 21 depending on the orientation of the support device 90 and the orientation of the pair of left and right support brackets 911 . Then, the main hoisting rope 21 is maintained in a substantially horizontally extending posture. In addition, the front ends of the pair of left and right support brackets 911 are supported by the connecting portion 912 so as to be rotatable about a second fulcrum portion 911B extending in the left-right direction. The connecting portion 912 is fixed to the front end portion of the body portion 90H and connects the grip portion 90A and the body portion 90H. A ninth motor M9 (electric motor) that rotates the pair of left and right support brackets 911 around the second fulcrum portion 911B is provided inside the body portion 90H (FIG. 61). The ninth motor M9 can fix the support bracket 911 at any position (angle).

In this embodiment, the grasping unit 910 grasps the main hoisting rope 21 on the foothold 100 (FIG. 2) at the base end of the boom 16 in the attitude of the support device 90 as shown in FIGS. When the support device 90 reaches the scaffolding 100 at the tip of the boom 16 by traveling of the traveling portion 90B, the ninth motor M9 rotates the pair of left and right support brackets 911 around the second fulcrum portion 911B in the direction of the arrow in FIG. move. As a result, as shown in FIG. 63, the posture is changed so that the pair of left and right support brackets 911 face upward. At this time, the grasping unit 910 rotates around the first fulcrum portion 911A in the direction of the arrow in FIG.

With such a configuration, the support bracket 911 can rotate around the second fulcrum portion 911B in a range including at least the first position (FIG. 62) and the second position (FIG. 63). supported by The gripping portion 90A at the first position is arranged behind the running portion 90B (the rear end side in the movement direction), and the gripping portion 90A at the second position is located forward of the gripping portion 90A at the first position. (front end side in moving direction). In FIG. 62, the grip portion 90A is arranged to face the running portion 90B in the direction (front-rear direction) parallel to the running surface. Therefore, when the support device 90 runs on the scaffolding 100, the height of the support device 90 is set low as shown in FIG. . Further, when the support device 90 reaches the tip of the boom 16, the tip of the main hoisting rope 21 can be handed over to the operator or the idler sheave unit 150 with the attitude shown in FIG. That is, the grasping unit 910 can be arranged at a higher position forward than the running portion 90B during the work (when the main hoisting rope 21 is delivered) than during the running of the support device 90 .

Further, in this embodiment, as shown in FIG. 63, the relative position of the gripping unit 910 to the traveling portion 90B can be changed by rotating the pair of left and right support brackets 911 . Therefore, when the support device 90 climbs over an obstacle on the scaffolding 100, the posture of the support bracket 911 can be adjusted so that the direction (posture) in which the main hoisting rope 21 extends does not change. can reduce the burden on Further, when the support device 90 travels, the gripping unit 910 is arranged behind the main body portion 90H (FIG. 62), thereby preventing the gripping unit 910 from hindering the traveling of the traveling portion 90B.

In this embodiment, a pair of left and right support brackets 911 and connecting portions 912 (both are connection portions) are arranged so that the gripping unit 910 of the gripping portion 90A can be relatively displaced with respect to the traveling portion 90B. 90B to each other. In particular, the pair of left and right support brackets 911 and connecting portions 912 are displaced relative to the traveling portion 90B in the longitudinal direction and the vertical direction as the gripping unit 910 rotates around the second fulcrum portion 911B. The two are connected as follows. Further, the ninth motor M9 (driving section) displaces the gripping section 90A relative to the traveling section 90B.

In addition, the base ends (arm base ends) of the pair of left and right support brackets 911 are supported by the traveling portion 90B so as to be rotatable about the second fulcrum portion 911B (horizontal axis) via the connecting portion 912. there is Therefore, by rotating the pair of left and right support brackets 911 about the horizontal axis, the gripping portion 90A can be moved up and down relative to the traveling portion 90B. Therefore, the traveling body 90B can travel while changing the position of the gripping unit 910 of the gripping portion 90A corresponding to an obstacle on the boom 16 . Further, the distal end portions (arm distal end portions) of the pair of left and right support brackets 911 are connected to the gripping unit 910 so that the gripping unit 910 of the gripping portion 90A can rotate around the first fulcrum portion 911A (the axis parallel to the horizontal axis). support. That is, in addition to the pair of left and right support brackets 911 rotating with respect to the traveling portion 90B, the gripping unit 910 of the gripping portion 90A is rotatably supported at the distal end portion of the support bracket 911 . Therefore, it is possible to suppress an increase in the tension of the main hoisting rope 21 caused by a change in the posture of the main hoisting rope 21 due to the rotation of the support bracket 911 around the second fulcrum portion 911B.

Next, modified embodiments of the present invention will be described based on the above fourth embodiment. Further, the modified embodiments below are not limited to the support device 90 according to the fourth embodiment, but can also be applied to support devices according to other embodiments described later.

64 and 66 are side views of a support device 90 according to a twenty-second modified embodiment of the invention. 65 and 67 are plan views of the support device 90. FIG. In this modified embodiment, the grip portion 90A includes a grip unit 910, a pair of left and right support brackets 911, and a pair of left and right connecting portions 912. As shown in FIG. The gripping unit 910 is supported at the distal end portions of a pair of left and right support brackets 911 so as to be rotatable around a first fulcrum portion 911A. On the other hand, the base end portions of the pair of left and right support brackets 911 are supported by the pair of left and right connecting portions 912 so as to be rotatable about a second horizontal fulcrum portion 911B. The pair of left and right connecting portions 912 are wall portions fixed to the main body portion 90H with an interval in the left-right direction. A stopper 911S (FIG. 66) is arranged on the inner wall surface of the pair of left and right connecting portions 912 to restrict the rotation range of the support bracket 911 and prevent the support bracket 911 from coming into contact with the lower body portion 90H. there is A ninth motor M9 for rotating a pair of left and right support brackets 911 is arranged inside the body portion 90H, as in FIG.

According to the configuration as described above, on the scaffolding 100 (FIG. 2) at the base end of the boom 16, as shown in FIGS. In the posture, the gripping unit 910 grips the main hoisting rope 21 . When the support device 90 reaches the scaffolding 100 at the tip of the boom 16, the ninth motor M9 rotates the pair of left and right support brackets 911 about the second fulcrum 911B in the direction of the arrow in FIG. As a result, as shown in FIGS. 66 and 67, the posture of the pair of left and right support brackets 911 is changed to face forward. At this time, the grasping unit 910 rotates around the first fulcrum portion 911A in the direction of the arrow in FIG.

Even in such a configuration, when the support device 90 runs on the scaffolding 100, the height of the support device 90 is set low as shown in FIG. can do. Further, when the support device 90 reaches the tip of the boom 16, the tip of the main hoisting rope 21 can be transferred to the operator or the idler sheave unit 150 with the attitude shown in FIG. Further, in this modified embodiment, as shown in FIG. 67, the main hoist rope 21 can be accommodated between the pair of left and right connecting portions 912 and further between the pair of left and right support brackets 911 . Therefore, interference between the main hoisting rope 21, the support bracket 911, and the connecting portion 912 is prevented when the posture of the gripping portion 90A is changed.

Also in this modified embodiment, the support bracket 911 is configured to be rotatable around the second fulcrum 911B in a range including at least the first position (FIG. 64) and the second position (FIG. 66). 90B. The gripping portion 90A at the first position is arranged on the rear side of the traveling portion 90B (the rear end side in the moving direction), and the gripping portion 90A at the second position is located forward of the gripping portion 90A at the first position. (front end side in the movement direction) and is arranged on the front side (front end side in the movement direction) of the traveling portion 90B.

68 and 69 are a side view and a plan view of a support device 90 according to a twenty-third modified embodiment of the invention. 70 is a plan view showing how the support device 90 travels on the crank portion 100C of the scaffold 100 on the boom 16. FIG. This modified embodiment differs from the 22nd modified embodiment in that the connecting portion 912 includes a body portion side member 912A and a grip portion side member 912B. The grip portion side member 912B is connected to a pair of left and right support brackets 911, and the body portion side member 912A is connected to the rear end portion of the body portion 90H. The grip portion side member 912B is connected to the body portion side member 912A so as to be able to rotate left and right about a vertically extending rotation fulcrum portion 912S (FIGS. 68 and 69).

According to such a configuration, as shown in FIG. 70, when the support device 90 reaches the crank portion 100C (FIG. 2) on the scaffolding 100, the traveling portion 90B changes direction along the crank portion 100C. Even so, the main hoist rope 21 can be maintained in a state of extending in the front-rear direction by rotating the gripping portion 90A relative to the traveling portion 90B. Therefore, bending or damage to the main hoisting rope 21 is suppressed as compared with the case where the gripping portion 90A integrally changes direction together with the traveling portion 90B. Also in this modified embodiment, as shown in FIG. 69, while the traveling portion 90B is traveling, the gripping portion 90A can rotate about the pivoting fulcrum portion 912S, so that the second embodiment (FIG. 33) can rotate. ), it is possible to flexibly cope with changes in the release point of the main hoisting winch 20 (the payout position of the main hoisting rope 21).

That is, in this modified embodiment, the connection portion 912 (intermediate connection portion) supports the base end portion (arm base end portion) of the support bracket 911 so as to be rotatable about the horizontal axis, and also supports the base end of the support bracket 911 . A base end portion of the support bracket 911 so that the end portion can rotate relative to the travel portion 90B around a rotation fulcrum portion 912S (a vertical axis extending in a direction perpendicular to (intersecting) the travel surface). and the running portion 90B are connected to each other. Therefore, even if the running portion 90B changes direction on the running surface as described above, the main hoisting rope 21 gripped by the gripping portion 90A maintains a state of extending along the front-rear direction (moving direction). 90 A of holding parts can be rotated relatively with respect to the driving|running|working part 90B so that it may carry out. As a result, damage to the main hoisting rope 21 caused by an increase in the tension of the main hoisting rope 21 due to the direction change of the traveling portion 90B is suppressed.

71 and 72 are side and plan views of a support device 90 according to a twenty-fourth modified embodiment of the present invention. 73 and 74 are side views showing how the support device 90 delivers the main hoist rope 21. FIG. In this modified embodiment, the support bracket 911 has a bent shape, and the support device 90 has a swivel portion 913 as in the second embodiment, as compared with the 22nd modified embodiment. They are different in that respect. The pair of left and right support brackets 911 has a bent portion substantially in the center. The pair of left and right support brackets 911 are supported by the pair of left and right connecting portions 912 so as to be rotatable about the second fulcrum portions 911B. A pair of left and right connecting portions 912 are fixed on a turning portion 913 that can turn (relatively rotate) with respect to the main body portion 90H. A stopper 911S (FIG. 71) for restricting the rotation range of the support bracket 911 is arranged on the connecting portion 912. As shown in FIG.

According to this configuration, as shown in FIG. 73, when the height of the idler sheave unit 150 arranged at the tip of the boom 16 is low, the support bracket 911 can be rotated to the front of the connecting portion 912. By being moved, the main hoisting rope 21 can be easily delivered to the idler sheave unit 150. - 特許庁On the other hand, as shown in FIG. 74, when the height of the idler sheave unit 150 arranged at the tip of the boom 16 is high, the support bracket 911 is rotated to the upper side of the connecting portion 912, The main hoisting rope 21 can be easily transferred to the idler sheave unit 150. - 特許庁

Also in this modified embodiment, the support bracket 911 is configured to rotate around the second fulcrum portion 911B in a range including at least the first position (FIG. 71) and the second position (FIG. 73). 90B. The gripping portion 90A at the first position is arranged behind the running portion 90B (the rear end side in the movement direction), and the gripping portion 90A at the second position is located forward of the gripping portion 90A at the first position. (front end side in the moving direction), and is arranged forward of the traveling portion 90B. In FIG. 74, the gripping portion 90A is arranged above the running portion 90B as a third position between the first position and the second position.

FIG. 75 is a side view of a support device 90 according to the twenty-fifth modified embodiment of the present invention. This modified embodiment differs from the twenty-third modified embodiment (FIGS. 69 to 70) in that the support device 90 includes a bracket stopper 950. FIG. Since the main hoist rope 21 is a metal (steel) wire rope, it is heavy. Therefore, when the traveling portion 90B travels while the gripping unit 910 grips the main hoisting rope 21, if the ninth motor M9 (FIG. 61) attempts to maintain the posture of the support bracket 911, a large current is required. do. Therefore, in this modified embodiment, the bracket stopper 950 fixed to the body portion 90H so as to extend rearward from the rear end portion of the body portion 90H can support the front end portions of the pair of left and right support brackets 911 from below. can. Therefore, the load on the ninth motor M9 can be reduced when the support device 90 is moved.

<About wire rope installation method>
By using the support device according to each of the above embodiments, in the crane 1 (working machine), the main hoisting rope 21 can be laid from the base end of the boom 16 to the tip of the boom 16 by the following wire rope arrangement method. can be arranged.

That is, taking the support device 50 according to the first embodiment as an example, the wire rope installation method includes the upper revolving body 11, and a base end portion and a distal end portion that are attached to the upper revolving body 11 so as to be able to rise and fall. A crane 1 equipped with a boom 16 and a main hoisting winch 20 attached to the upper revolving body 11 or the base end of the boom 16 for feeding and hoisting a main hoisting rope 21, in a state where the boom 16 is laid down. The main hoisting rope 21 let out from the main hoisting winch 20 is towed from a predetermined initial position on the upper surface of the boom 16 to a target position on the tip side of the boom 16 from the initial position. A wire rope arranging method for the crane 1 for arranging the main hoisting rope 21 thereon. The wire arrangement method is
At the initial position on the upper surface of the boom 16 in the lying posture, a support device 50 is arranged, which includes a gripping portion 50A capable of gripping the main hoisting rope 21 and a traveling portion 50B capable of traveling on the upper surface. and
letting out the main hoisting rope 21 from the main hoisting winch 20 and causing the grasping portion 50A of the support device 50 to grasp the main hoisting rope 21;
While the main hoisting rope 21 is further let out from the main hoisting winch 20, the gripping portion 50A grips the main hoisting rope 21, and the traveling portion 50B moves from the initial position on the boom 16 to the target position. traveling over the upper surface of boom 16;
When the support device 50 reaches the target position by traveling of the traveling portion 50B, the holding portion 50A releases the main hoisting rope 21 and connects the main hoisting rope 21 to a predetermined wire rope connection portion. and
Prepare. The wire rope connecting portion is a predetermined idler sheave, hook, or the like.

Further, in the above-described wire rope arrangement method, when the support device 50 reaches the target position by traveling of the traveling portion 50B, the support device 50 is moved so that the main hoist rope 21 approaches the wire rope connection portion. It is further provided that the main winding rope 21 is relatively moved with respect to the running portion 50B. In this case, the function of the above-described sending unit 80C or the like corresponds.

In addition, the above wire rope arrangement method
preparing a boom 16 having a scaffolding 100 installed on the upper surface of the boom 16 in the lying posture so as to extend along the movement direction;
causing the traveling part 50B to travel on the scaffolding 100 of the boom 16;
Prepare.

It should be noted that the function of the support device according to each of the above-described embodiments also constitutes part of the above-described wire arrangement method.

The support devices 50, 60, 70, 80, and 90 according to one embodiment of the present invention, modified embodiments thereof, and the wire rope installation method for the crane 1 using the support device have been described above. In addition, this invention is not limited to these forms. In the present invention, the following modified embodiments are possible.

(1) In the first embodiment described above, the second motor M2 rotates the pair of left and right roller support portions 511 so that the pair of left and right rollers 510 come into contact with each other. M2 moves at least one support member 511 (roller 510) of the pair of support members 511 such that at least one roller 510 of the pair of rollers 510 is in contact with and separates from the other roller 510. It may be possible to In this case also, the pair of left and right rollers 510 can grip and release the main winding rope 21 . Further, instead of the pair of left and right rollers 510, the main winding rope 21 may be gripped and released by a pair of fixed (non-rotating) gripping members having partial outer peripheral surfaces facing each other. In this case, it is desirable that the above-mentioned partial outer peripheral surfaces are mutually convex curved surfaces in a plan view. , an inwardly recessed (concave) curved surface, and in particular, a circular cross-sectional shape with a predetermined radius of curvature R is desirable. Also in this case, it is desirable that the above-mentioned relationships of 2σ<A and 2R>B are satisfied.

(2) In the above-described second embodiment, the so-called chuck-type gripping portion structure as shown in FIG. may be a vise structure for gripping the main hoisting rope 21, or may be a structure for gripping the main hoisting rope 21 by a known U-bolt structure or the like. Alternatively, an electromagnet may be attached to the support portion 810 of FIG. 45, and the main hoist rope 21 may be gripped (held) by the attractive force of the electromagnet.

(3) In the first embodiment, the pair of rollers 510 are arranged to face each other in the horizontal direction, and in the second embodiment, the upper roller 851 and the lower roller 852 are arranged to face each other in the vertical direction. However, the rollers constituting the gripping part or the feeding part of the present invention are arranged in other directions such as being arranged facing each other in an oblique direction that intersects the horizontal direction and the vertical direction (inclined arrangement) They may be arranged facing each other.

(4) In the above second embodiment, the grip unit 610 has the first pressing pin 612, the second pressing pin 613, and the third pressing pin 614. However, the present invention is limited to this. not to be The pressing pin (pressing member) may include three or more of the pressing members arranged at different positions along the circumferential direction. In this case, the main hoist rope 21 can be stably gripped by the pressing portions of the three or more pressing members. Moreover, it is preferable that the three or more pressing members are arranged at regular intervals along the circumferential direction. In this case, the main hoist rope 21 can be gripped more stably by the pressing portions of the three or more pressing members. In addition, the motor (pressing member driving section) that drives the first pressing roller 612S, the second pressing roller 613S, and the third pressing roller 614S in the direction of contacting and separating from the main winding rope 21 drives the plurality of pressing sections. It is desirable to drive the plurality of pressing members so that they can be arranged at a plurality of positions with different distances from the main hoist rope 21 . In this case, the plurality of pressing members can stably grip the main hoisting rope 21 having various outer diameters.

(5) Furthermore, in the above-described third embodiment, as shown in FIG. 45, the grasping portion 80A is arranged in the front portion of the support device 80, and the feeding portion 80C is arranged in the rear portion of the support device 80. , the gripping portion 80A may be arranged in the rear portion of the support device 80, and the feeding portion 80C may be arranged in the front portion of the support device 80. As shown in FIG. In this case, an unexpected movement of the main hoisting rope 21 (interference with an obstacle, a part of the main hoisting rope 21 behind the supporting device 80 falling from the boom 16, etc.) while the support device 80 is traveling Even if there is, the main hoisting rope 21 is prevented from falling off from the forward feeding portion 80C by the rear gripping portion 80A.

1 Crane (work machine)
10 lower running body 100 scaffolding 100C crank part 100S idler sheave arrangement part 11 upper revolving body (fuselage)
150 idler sheave unit 16 boom 164A guide roller 20 main winch (winch)
21 Main winding rope (wire rope)
50, 60, 70, 80, 90 Support devices 50A, 60A, 70A, 80A, 90A Grasping parts 50B, 60B, 70B, 80B, 90B Traveling parts 50H, 60H, 70H, 80H, 90H Body part 510 Roller 510A Rotating shaft 510B Bearing 510D Pulley 510F Rope grip surface 510J Lock recess 511 Roller support (support member, arm)
515 lock mechanism (braking mechanism)
515A lock main body 515B lock lever 516 center link 516B coil spring 517 side link 518 spring (grip driving part, biasing member)
519 side link 520 link 521 rod 522 telescopic cylinder 523 rear guide (rear end side guide portion)
524 telescopic cylinder (rear end side guide driving part)
525 Front guide (tip side guide part)
526 telescopic cylinder (tip side guide driving part)
527 spline 528 support bracket 528A bracket body 528B slider 528C pinion 610 gripping unit 611 unit body (holding member)
611A unit fixed part (fixed part)
611B Unit opening/closing part (movable part)
611C fulcrum portion 612 first pressing pin (pressing member)
612S First pressing roller (pressing part)
613 second pressing pin (pressing member)
613S Second pressing roller (pressing part)
614 third pressing pin (pressing member)
614S third pressing roller (pressing part)
620 Turning unit 711 Grasping unit 712 Turning unit 720 Front guide 80C Feeding unit 810 Supporting unit 812 Upper gripping claw 813 Lower gripping claw 814 Telescopic cylinder 851 Upper roller 851S Upper roller support 852 Lower roller 852S Lower roller support 861 Front guide 863 Telescopic Cylinder 871 Front guide 873 Telescopic cylinder 910 Grasping unit 911 Support bracket 912 Connecting part 913 Turning part 950 Bracket stopper M1 First motor (roller driving part)
M2 2nd motor (gripping drive unit)
M3 3rd motor (gripping drive unit)
M4 4th motor M5 5th motor M6 6th motor (pressure roller drive unit)
M7 7th motor (drive source)
M8 8th motor M9 9th motor MG Motor shaft

Claims (27)

a body, a hoisting member including a base end portion hoistably mounted on the fuselage and a distal end portion on the opposite side thereof, and a wire rope payout and hoisting device mounted on the base end portion of the body or the hoisting member. A working machine support device for supporting wire rope installation work of a working machine, comprising:
a gripping part capable of gripping the wire rope let out from the winch and releasing the wire rope;
A main body portion for supporting the grip portion is provided, and a running surface arranged on an upper surface portion of the hoisting member in a state of lying down with respect to the fuselage extends at least from the base end portion to the tip end portion of the hoisting member. a traveling part capable of traveling along the direction of movement;
with
The gripping part is
a pair of gripping members having gripping surfaces arranged opposite to each other in a direction intersecting the moving direction;
a support portion attached to the main body portion and supporting the pair of gripping members;
a grip drive unit capable of moving at least one gripping member of the pair of gripping members such that at least one gripping member moves toward or away from the other gripping member;
has
When the grip drive unit moves the at least one grip member closer to the other grip member, the wire rope can be gripped by the grip surfaces of the pair of grip members, and the grip drive unit moves the A support device for a work machine, wherein the wire rope is released from the pair of gripping members when at least one gripping member is moved away from the other gripping member. 2. The support device for a working machine according to claim 1 , wherein said gripping surfaces of said pair of said gripping members are convex curved surfaces when viewed from a direction intersecting the direction in which said wire rope extends. The pair of gripping members is a pair of rollers in which the gripping surface is a cylindrical outer peripheral surface,
Roller driving for rotating at least one of the pair of rollers such that the pair of rollers grips the wire rope and causes the pair of rollers to move the wire rope relative to the running section. Department and
A state in which the pair of rollers grips the wire rope can be switched between an allowable state in which the pair of rollers are allowed to rotate and a braking state in which the rotation is prevented, and the rotation of the pair of rollers in the allowable state. a braking mechanism that causes the wire rope to move relative to the running part by means of a braking mechanism, while maintaining the state in which the pair of rollers grips the wire rope in the braking state;
The work machine support device of claim 2 , further comprising: The support section has a pair of support members that respectively support the pair of rollers so that the outer peripheral surfaces of the pair of rollers are opposed to each other in a direction that intersects the moving direction and is parallel to the running surface. 4. The work machine support device according to claim 3 . further comprising a biasing member that biases the pair of support members so that the pair of gripping members approach each other in the facing direction;
The grip driving section moves at least one of the pair of support members against the biasing force of the biasing member such that the pair of gripping members are separated from each other in the facing direction. Item 5. A work machine support device according to Item 4 . The pair of support members includes an arm base end supported rotatably around a rotation shaft extending in the vertical direction on the main body, and an arm base end disposed on the opposite side of the arm base end to rotatably rotate the roller. comprising a pair of arms, each having a supporting arm tip and
The arm base end portions of the pair of arms are supported by the main body portion with a space in the opposing direction, and the arm tip portions of the pair of arms are positioned further than the arm base end portions of the pair of arms. arranged opposite each other in said opposite direction at positions spaced apart in the direction of movement;
The grip drive unit rotates the pair of arm proximal end portions about the rotation axis against the biasing force of the biasing member so that the pair of arm distal end portions are separated from each other in the facing direction. The work machine support device according to claim 5 . 4. The support device for a working machine according to claim 3 , wherein said support portion has a pair of support members respectively supporting said pair of rollers such that said outer peripheral surfaces of said pair of rollers face each other in the vertical direction. . The grip drive unit
a cylinder that constitutes at least one of the pair of support members and that can extend and contract along the vertical direction;
a drive source that generates a drive force for expanding and contracting the cylinder;
8. The work machine support device according to claim 7 , comprising: 9. The support device for a working machine according to claim 2 , wherein said gripping surfaces of said pair of gripping members are mutually concave curved surfaces in a cross section intersecting a direction in which said wire rope extends. a body, a hoisting member including a base end portion hoistably mounted on the fuselage and a distal end portion on the opposite side thereof, and a wire rope payout and hoisting device mounted on the base end portion of the body or the hoisting member. A working machine support device for supporting wire rope installation work of a working machine, comprising:
a gripping part capable of gripping the wire rope let out from the winch and releasing the wire rope;
A main body portion for supporting the grip portion is provided, and a running surface arranged on an upper surface portion of the hoisting member in a state of lying down with respect to the fuselage extends at least from the base end portion to the tip end portion of the hoisting member. a traveling part capable of traveling along the direction of movement;
with
The gripping part is
a cylindrical holding member surrounding an internal space that allows the wire rope to be inserted;
Each includes pressing portions arranged at different positions in the circumferential direction and capable of pressing the wire rope inserted in the internal space, and the pressing portions contact and separate from the wire rope. a plurality of pressing members movably supported by the holding member;
a pressing member driving portion that drives the plurality of pressing portions;
A work machine support device. 11. The support device for a working machine according to claim 10 , wherein said pressing member driving section drives said plurality of pressing sections so that said plurality of pressing sections can be arranged at a plurality of positions in said contact/separation direction. 12. The work machine support device according to claim 10 , wherein said plurality of pressing members include three or more of said pressing members arranged at different positions along said circumferential direction. 13. The work machine support device according to claim 12 , wherein the three or more pressing members are arranged at regular intervals along the circumferential direction. The pressing portion of at least one pressing member among the plurality of pressing members comprises a pressing roller rotatable so as to relatively move the wire rope gripped by the gripping portion with respect to the running portion,
a pressing roller driving unit that rotates the pressing roller so that the pressing roller relatively moves the wire rope;
The pressing portions of the plurality of pressing members are switchable between a permissible state in which the pressing rollers are allowed to rotate and a braking state in which the rotation is prevented in a state in which the pressing portions grip the wire rope, a braking mechanism that causes the wire rope to move relative to the running portion by a roller and maintains a state in which the wire rope is gripped by the pressing portions of the plurality of pressing members in the braking state;
14. The work machine support device according to any one of claims 10 to 13 , further comprising: The holding member is
a fixing portion that defines a portion of the internal space and is fixed to the main body;
a movable portion that is relatively movable with respect to the fixed portion, the movable portion being switchable between a closed state that defines the internal space together with the fixed portion and an open state that opens the internal space; ,
The work machine support device according to claim 10 or 11 , comprising: The movable part opens the internal space upward in the open state so that the wire rope can be removed upward from the internal space,
A predetermined pressing member among the plurality of pressing members is configured to be capable of pushing up the wire rope arranged in the internal space to a position where it is separated from the internal space in the open state of the movable portion. 16. The work machine support device according to claim 15 , wherein the work machine support device is supported by the lower portion of the holding member so as to be vertically movable. The pair of gripping members each have an inner peripheral surface forming the gripping surface, and at least one gripping member of the pair of gripping members rotates relative to the other gripping member about a predetermined rotation axis. is movable,
When the at least one gripping member rotates so that the pair of gripping members approach each other, the wire rope can be gripped by the gripping surfaces of the pair of gripping members, and the pair of gripping members move away from each other. 2. The support device for a working machine according to claim 1 , wherein said wire rope is released from said pair of gripping members when at least one of said gripping members rotates. 18. The work machine support device according to claim 17 , wherein the gripping surfaces of the pair of gripping members are arranged to grip the wire rope at different positions in the direction in which the wire rope extends. Further comprising a rear end side guide portion supported by the body portion upstream of the grip portion in the moving direction, supporting the wire rope from below and guiding the wire rope toward the grip portion. Item 19. The work machine support device according to any one of Items 1 to 18 . a body, a hoisting member including a base end portion hoistably mounted on the fuselage and a distal end portion on the opposite side thereof, and a wire rope payout and hoisting device mounted on the base end portion of the body or the hoisting member. A working machine support device for supporting wire rope installation work of a working machine, comprising:
a gripping part capable of gripping the wire rope let out from the winch and releasing the wire rope;
A main body portion for supporting the grip portion is provided, and a running surface arranged on an upper surface portion of the hoisting member in a state of lying down with respect to the fuselage extends at least from the base end portion to the tip end portion of the hoisting member. a traveling part capable of traveling along the direction of movement;
a rear end side guide portion supported by the body portion upstream of the grip portion in the moving direction, supporting the wire rope from below and guiding the wire rope toward the grip portion;
A support device for a work machine, comprising: a rear end side guide driving section capable of vertically moving the rear end side guide section. The rear end guide driving section can move the rear end guide upward to a position where the wire rope held by the holding section is separated upward from the holding section. 21. The work machine support device according to claim 20 , wherein: a body, a hoisting member including a base end portion hoistably mounted on the fuselage and a distal end portion on the opposite side thereof, and a wire rope payout and hoisting device mounted on the base end portion of the body or the hoisting member. A working machine support device for supporting wire rope installation work of a working machine, comprising:
a gripping part capable of gripping the wire rope let out from the winch and releasing the wire rope;
A main body portion for supporting the grip portion is provided, and a running surface arranged on an upper surface portion of the hoisting member in a state of lying down with respect to the fuselage extends at least from the base end portion to the tip end portion of the hoisting member. a traveling part capable of traveling along the direction of movement;
a tip side guide part supported by the body part downstream in the movement direction from the grip part, supporting the wire rope from below and guiding the wire rope downstream in the movement direction; Work machine support equipment. 23. The work machine support device according to claim 22 , further comprising a tip end side guide driving part capable of moving the tip end side guide part up and down. a body, a hoisting member including a base end portion hoistably mounted on the fuselage and a distal end portion on the opposite side thereof, and a wire rope payout and hoisting device mounted on the base end portion of the body or the hoisting member. A working machine support device for supporting wire rope installation work of a working machine, comprising:
a gripping part capable of gripping the wire rope let out from the winch and releasing the wire rope;
A main body portion for supporting the grip portion is provided, and a running surface arranged on an upper surface portion of the hoisting member in a state of lying down with respect to the fuselage extends at least from the base end portion to the tip end portion of the hoisting member. a traveling part capable of traveling along the direction of movement;
with
A support device for a working machine, wherein the traveling section is installed on an upper surface of the hoisting member of the working machine so as to extend along the moving direction and is capable of traveling on a scaffold forming the traveling surface. a hoisting member including a fuselage, a proximal end portion and a distal end portion hoistably mounted on the fuselage, a winch mounted on the fuselage or the basal end portion of the hoisting member for unreeling and hoisting a wire rope; , the wire rope let out from the winch with the hoisting member laid down is moved from a predetermined initial position on the upper surface of the hoisting member to the tip of the hoisting member beyond the initial position A wire rope arranging method for a work machine for arranging the wire rope on the hoisting member by pulling it to a target position on the side,
arranging a support device having a gripping portion capable of gripping a wire rope and a running portion capable of self-propelled on the top surface portion at the initial position on the top surface portion of the laid-down hoisting member;
letting out the wire rope from the winch and causing the gripping section of the support device to grip the wire rope;
While the wire rope is further let out from the winch, the gripping part grips the wire rope, and the running part automatically moves from the initial position on the hoisting member to the target position on the upper surface of the hoisting member. to run and
When the support device reaches the target position by the self-running of the traveling unit, the gripping unit releases the wire rope and connects the wire rope to a predetermined wire rope connection unit;
preparing a scaffold as the hoisting member, which is provided on the upper surface portion of the hoisting member in the laid down posture so as to extend along the direction from the base end portion to the tip end portion of the hoisting member;
causing the running part to run on the scaffolding of the undulating member;
A wire rope installation method for a work machine, comprising: a hoisting member including a fuselage, a proximal end portion and a distal end portion hoistably mounted on the fuselage, a winch mounted on the fuselage or the basal end portion of the hoisting member for unreeling and hoisting a wire rope; , the wire rope let out from the winch with the hoisting member laid down is moved from a predetermined initial position on the upper surface of the hoisting member to the tip of the hoisting member beyond the initial position A wire rope arranging method for a work machine for arranging the wire rope on the hoisting member by pulling it to a target position on the side,
arranging a support device having a gripping portion capable of gripping a wire rope and a running portion capable of running on the top surface portion at the initial position on the top surface portion of the laid-down hoisting member;
letting out the wire rope from the winch and causing the gripping section of the support device to grip the wire rope;
While further reeling out the wire rope from the winch, it travels from the initial position on the hoisting member to the target position on the upper surface of the hoisting member with the holding portion holding the wire rope. and
When the supporting device reaches the target position by traveling of the traveling part, releasing the gripping of the wire rope by the gripping part and connecting the wire rope to a predetermined wire rope connection part;
moving the wire rope relative to the running section by the support device so that the wire rope approaches the wire rope connecting portion when the support device reaches the target position due to the running of the running section; A wire rope installation method for a work machine, comprising: preparing a scaffold as the hoisting member, which is provided on the upper surface portion of the hoisting member in the laid down posture so as to extend along the direction from the base end portion to the tip end portion of the hoisting member;
causing the running part to run on the scaffolding of the undulating member;
27. The work machine wire rope installation method of claim 26 , comprising:

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