JPH08319082A - Direction converting device for running section in running truck for crane - Google Patents

Abstract

PURPOSE: To simply convert the direction of running, and thereby shift running to a separate running path by mounting each direction converting device onto a tuning support board where a direction converting rail is supported by a turning wheel while the crossed axes angle of a running rail is being freely turned. CONSTITUTION: When a running truck 2 of a crane, which is moved over a running rail 5, is shifted to a separate running rail 5, the running truck 2 of a crane is moved to a cross position, and respective bogie cars 2b are rested over a direction converting rail 11 of each direction converting device 10 so as to be suspended. An electrically driven cylinder acting as a turning drive means 20 of each direction converting device is driven, and a movable rod is advanced/retreated. A turning support board connected to the movable rod of a electrically driven cylinder 21 by a pin 23 is turned around over a turning wheel 16, a turning support board 12 is suspended by a stopper, and the direction converting rail 11 thereby agrees with the axial line of the intended running rail 5. Namely, the bogie car 2b to be rested over the turning support board 12 is thereby converted in direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direction changing device for a main portion of a traveling carriage of a crane having a function of traveling along a rail, and more specifically, to a traveling portion or a traveling portion of a traveling carriage. The present invention relates to a direction changing device for remotely turning the direction of a power cable take-up reel to a drive machine.

[0002]

2. Description of the Related Art Conventionally, a tilting jib type crane, which is designed to be movable along a rail, can be mounted on a traveling carriage equipped with a drive unit so as to be movable on a laid rail. It consists of a support base, a swing frame and a jib). In addition, this traveling trolley can stably receive the load reaction force when lifting the load, and the traveling equipment of the bogie vehicle structure is provided at each of the four end portions of the trolley frame so as to obtain stability during traveling. (Traveling section) is provided.

When the tilting jib type crane mounted on such a traveling carriage is normally used, for example, at a construction site, it is limited by moving along a rail along a rail in a straight line direction. It is designed to work within the specified range. Therefore, when it is necessary to change the traveling carriage of this crane to a different traveling direction,
Since the structure cannot change the direction as it is, lift the whole thing with a jack and change the direction of the bogie car provided at the four ends of the bogie frame and move it to the traveling rail in different directions. There is.

[0004]

As described above, in the above-described tilting jib type crane with a traveling carriage, when the work of jacking up the traveling carriage by changing the direction of the traveling carriage is performed, for example, in a high-rise building. Working in high places such as upper floors is dangerous. Moreover, since many jacks are prepared and the work is performed, there is a problem that this direction changing work requires a lot of labor and the construction cost is increased.

According to the present invention, these problems are solved and the cranes are installed at respective intersections of traveling rails at positions where the traveling paths of the crane intersect, and the traveling portions of the traveling carriages of the crane are received and these traveling portions are individually received. It is an object of the present invention to provide a traveling unit direction changing device in a traveling carriage of a crane configured so that the direction can be easily changed by turning to move to another traveling path.

[0006]

According to the present invention, which is configured to achieve the above object, at least four traveling devices are attached to a lower portion of a traveling frame so as to be planarly rotatable in a predetermined distribution. A set of two traveling rails for guiding a traveling vehicle equipped with a crane is laid at a predetermined interval on the structure or roadbed, and at least one traveling rail is arranged on the same plane intersecting this traveling rail. At the intersecting positions, direction changing devices capable of rotating in a desired angle plane at the intersecting positions of the respective traveling rails are installed, and each of these direction changing devices has a length capable of accepting one traveling device of the traveling carriage. The direction-changing rail is supported by a slewing wheel installed below the traveling rail laying base, and is mounted on a swivel support board that is swivelable at a crossing angle of the traveling rail intersected by the swivel drive means. It is of configuration wherein the door.

As the turning drive means of the direction changing device in the present invention, the tip end portion of the movable lot of the linear actuator fixed to the traveling rail laying base is pin-connected to the turning support plate side, and is attached to the turning support plate. It is preferable that a stopper and a limit switch for stopping the operation of the linear actuator at the position where the supported rails intersect the traveling rails are provided on the traveling rail laying base side. Further, the swivel support means may be rotated by a gear or a chain winding drive to rotate the swivel support plate by a required rotation angle.

[0008]

The traveling-direction changing device for a traveling carriage of a crane according to the present invention having the above-described structure is provided on a traveling carriage of a crane to be guided at a crossing position of traveling rails laid vertically and horizontally within a required range. It is installed and used at intervals according to the distribution of at least four traveling devices (traveling parts). In order to change the moving direction of the traveling carriage, each traveling device (traveling part) attached to this traveling carriage is moved and placed on the direction changing device so that the rotation axis of both of them coincides with each other. When the turning drive means is actuated in the converting device to rotate the turning support plate, the traveling devices (traveling portions) are individually supported by the direction changing rails and the direction is changed by the intersection angle of the traveling rails. . At this time, in the traveling carriage, only the traveling device (traveling portion) is changed in direction and its posture is not changed. Therefore, the stability of the crane is maintained, and the traveling carriage equipped with the crane can be moved to the desired position by shifting to the traveling rail in the required direction.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a traveling portion direction changing device for a traveling vehicle of a crane according to the present invention will be described below with reference to the drawings in the case of a low floor inclined jib type crane (hereinafter simply referred to as a jib type crane). .

FIG. 1 is a diagram showing an embodiment of a jib type crane having a function capable of changing the direction by means of a traveling portion direction changing device in a traveling carriage according to the present invention. FIG. 2 is a partial vertical cross-sectional view of an embodiment showing the relationship between the traveling device and the direction changing device in the traveling vehicle of the crane. FIG. 3 is a plan view of the direction changing device. FIG. 4 is a side view of the direction changing device as seen from the end portion in the rail axial direction. FIG. 5 is a plan view of an example showing a laying aspect of a traveling rail of a crane in which the direction changing device of the present invention is arranged.

As shown in these figures, the jib type crane 1 is mounted on a traveling carriage 2 having traveling devices arranged at four corners, and is laid at intervals corresponding to the traveling devices of the traveling carriage 2. A pair of two traveling rails 5 are guided and moved to perform lifting work. The traveling rail 5 is arranged so that the traveling rails 5 and 5 cross each other so that the traveling rail 5 can be moved vertically and horizontally within a limited range depending on the circumstances of the work site.

In the traveling carriage 2 of the crane, bogies 2b are vertically arranged as traveling devices at four corners of the carriage frame 2a, and are mounted by support shafts 2c. In this bogie vehicle 2b, one of the traveling rails 5 is provided with a drive unit 2m for each traveling rail 5, and the other is driven. A rail clamp mechanism 2d is attached to one end of each bogie 2b, and a buffer 2e for preventing collision damage is attached to both ends.

At each of the four intersections where the traveling rails 5 intersect, one traveling device (bogie car 2b) for the traveling carriage 2 can be received, and the direction of the traveling device (bogie car 2b) is changed. The direction changing device 10 is installed.

The direction changing device 10 is provided with a direction changing rail 11 which is rotatably supported so as to match the traveling rail 5 at a predetermined position, and the direction changing rail 1.
1. A base portion on which the traveling rail 5 is laid, which is composed of a swivel support plate 12 for supporting the swivel support 1, a swivel drive means 20 for rotating the swivel support plate 12 at a predetermined angle, and a swivel position regulating means (stopper and limit switch). (For example, when the traveling rail 5 is attached to the upper surface of the body member of the structure via the support member, the body member is installed).

The direction-changing rails 11 are aligned at the same level as the traveling rails 5 and 5 intersecting at the intersecting position, and are long enough to receive one bogie vehicle 2b. It is fixedly supported by a swivel support plate 12 provided on the movable wheel upper side of a swivel wheel 16 which is attached via a base plate 15 to a lower part of a base plate 14 formed by cutting a part thereof. The turning support plate 12 can be turned from one running rail 5 position to the other running rail 5 position by a turning drive means 20 arranged on the side.

As the turning drive means 20, a linear actuator is used in this embodiment, and an electric cylinder 21 is adopted as the linear actuator. This electric cylinder 21
The drive unit of the trunnion mount structure is attached to the member of the traveling rail support base 13 (laying base) via the bracket 18, and the tip of the movable rod 22 (screw rod) of the direct acting part is projected to the swivel support board 12. The movable support rod 22 is connected to the provided connecting portion by a connecting pin 23, and the movable support rod 22 moves back and forth to move the swivel support plate 12 at a required angle (in this specific example, 90
゜) It is designed to turn.

The turning support plate 12 having the above-mentioned structure is provided with a turning position regulating means so that the direction changing rail 11 supported at the intersection position of the running rails 5 can change the direction by aligning the axis line with the one or the other running rails 5. Controlled by. As the turning position regulating means, for example, stoppers 25 and 25 'are attached to members of the traveling rail support base 13 in the turning direction, and a part of the turning support board 12 is applied to the stopper 25 (or 25') to turn the turning range. Is restricted. Also, these two stoppers 25, 2
A limit switch (not shown) is attached near each position of 5 ', and is electrically controlled so that the operation of the electric cylinder 21 is stopped when the turning support plate 12 turns a predetermined turning angle. ing.

The traveling portion direction changing device 10 in the traveling carriage 2 of the crane of this embodiment having the above-described structure is shown in FIG.
At four intersections of the traveling rails 5, which are laid as a moving path of the jib crane 1 as illustrated in, the direction changing rails 11 are installed in alignment with the respective levels of the traveling rails 5. And the installation part of these direction changing devices 10 is cut open in the space where the turning support board 12 can turn, and the center of the direction changing device 10 is installed so that it may coincide with the turning center of the intersection.

When the direction changing device 10 is installed at the position where the traveling rails 5 intersect each other in this manner, the traveling carriage 2 of the crane moving on the traveling rails 5 needs to be transferred to another traveling rail 5. In this case, the traveling carriage 2 of the crane is moved to the intersecting position and each bogie 2b is placed on the direction changing rail 11 of the direction changing device 10 and stopped. At this time, the axis of the support shaft 2c of each bogie 2b coincides with the axis of the turning shaft of the direction changing device 10 and is stopped. The operation of aligning the axis of the support shaft 2c of the bogie 2b and the turning axis of the direction changing device 10 is performed by, for example, attaching a limit switch (not shown) to the frame of the bogie 2b, and the limit switch is used by the direction changing device 10. Swivel support board 12
The plate may be positioned in contact with a contact plate (not shown) provided on the. In the case of positioning with the limit switch as described above, it is preferable to make the contact plate of the limit switch retractable after changing the direction.

The traveling vehicle 2 of the crane is provided with the direction changing device 10.
When it is placed at a predetermined position on the direction changing rail 11,
By driving the electric cylinder 21 as the turning drive means 20 of each direction changing device 10 to move the movable rod 22 forward or backward, the turning support plate 12 connected to the movable rod 22 of the electric cylinder 21 by the pin 23 is provided. When the wheel is turned on the turning wheel 16 and turned by a preset rotation angle, the turning support board 12 is stopped by the stopper 25 (or 25 '), and the axis lines of the direction changing rail 11 and the target traveling rail 5 match. To do. That is, the direction of the bogie vehicle 2b mounted on the swivel support board 12 is changed. In addition, at the same time when the swivel support plate 12 has finished turning the required rotation angle,
The drive of the electric cylinder 21 is stopped by the operation of the limit switch. Since each direction changing device 10 is driven independently, if all the bogie cars 2b are changed in direction by each direction changing device 10, the posture of the traveling carriage 2 does not change but only the bogie car 2b changes direction. By activating the driving machine 2m in this manner, it is possible to move the driving machine 2m onto the traveling rail 5 in different directions from the intersection position.

Therefore, if the turning drive means 20 of each of the direction changing devices 10 can be operated remotely,
A human operator can operate the crane to convert the traveling path of the crane.

In the above description, the direction change of the crane equipped with the traveling carriage 2 has been described, but this type of traveling carriage 2
In that case, since the electric power is supplied by the cabtire cable, the cabtire cable is dragged to travel, and the traveling carriage 2 is often provided with a winding device (not shown). for that reason,
When changing the direction and moving the captyre cable, it is necessary to comfortably wind and unwind the captyre cable. Therefore, the winding device for the capty cable provided on the traveling carriage 2 is mounted on the mounting base via the turning wheel, and the turning drive means 20 similar to the direction changing device 10 is attached to the winding device. If it is configured so as to be connected to the base and rotated by a required angle, the direction of the capty cable winding device can be changed by remote control, and when the traveling carriage 2 changes direction and moves, the winding reel is anomalous. It can be handled safely without any acting force.

Further, as the turning drive means 20 in the direction changing device 10 of the present invention, in addition to the above-mentioned linear actuator (electric cylinder or fluid pressure cylinder), a gear (not shown) on the turning support plate 12 side. Is provided to rotate by a meshing drive with a gear attached to the output shaft of the swing drive motor, or by a winding drive by a chain, and a rack that is linearly driven by the gear on the swivel support plate 12 is meshed and swung. A driving method or the like can be adopted.

Further, according to the present invention, also in a gantry crane capable of traveling, the traveling unit is equipped with a traveling device having four bogie vehicle structures at the lower portion of the frame, and traveling rails 5 intersecting at intervals of the traveling devices are provided. By laying and providing the same direction changing device as that of the above-mentioned embodiment at the intersection of the traveling rails 5, it is possible to move the gantry crane in different directions without difficulty and move it vertically and horizontally.

[0025]

As described above, according to the present invention, the traveling carriage equipped with the crane is changed in direction at the site where the traveling carriage is laid in the direction in which the traveling rails intersect and the traveling carriage is used. Even if one traveling rail is moved to the other traveling rail, it is possible to change the direction of the traveling portion of the traveling carriage easily and quickly while maintaining safety by remote control, and the structure is simple. Therefore, the installation cost is low, and even in the case of temporary installation, it can be relocated and used, which is economical.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a jib type crane having a function capable of changing the direction by a traveling unit direction changing device in a traveling vehicle of the present invention, wherein FIG. 1A is a front view and FIG. Is.

FIG. 2 is a partial vertical cross-sectional view of an embodiment showing a relationship between a traveling device and a direction changing device in a traveling vehicle for a crane according to the present invention.

FIG. 3 is a plan view of a direction changing device according to the present invention.

FIG. 4 is a side view of the direction changing device according to the present invention as viewed from an end in the rail axial direction.

FIG. 5 is a plan view of an example showing a laying aspect of a traveling rail of a crane in which the direction changing device of the present invention is arranged.

[Explanation of symbols]

 1 jib type crane 2 traveling carriage 2b bogie vehicle 2c bogie vehicle support shaft 5 traveling rail 10 direction changing device 11 direction changing rail 12 swivel support board 13 traveling rail support base 14 base 16 swivel wheel 18 bracket 20 swivel drive means 21 electric cylinder 22 Movable rod 23 Connecting pin 25,25 'Stopper

Claims (1)

[Claims] 1. A set of two traveling rails for guiding a traveling vehicle equipped with a crane, wherein at least four traveling devices are attached to a lower portion of the traveling frame in a predetermined distribution so that each traveling device can be rotated in a plane. At a crossing position where a predetermined distance is laid on the roadbed and at least one set of travel rails are arranged on the same plane so as to intersect with this travel rail, the required angle plane at each crossing position of the travel rails. Each of the direction changing devices is mounted on a slewing wheel installed at the bottom of the traveling rail laying base, the direction changing rail having a length capable of receiving one traveling device of the traveling carriage. A traveling unit direction changing device in a traveling carriage of a crane, characterized in that the traveling unit is mounted on a swivel support board which can swivel at an intersecting angle of traveling rails intersected by a swiveling drive means.