JPH10120359A - Crane device with rope locking tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change attitude of a heavy material in the air with a crane device by providing a rope locking tool for connecting one end of an auxiliary rope to an appropriate position of a boom. SOLUTION: A crane device, of which suspension hook 12 suspended from a boom 4 or a beam is hoisted by a winch device 6, is provided with a rope locking tool 20 for connecting one end of an auxiliary rope 21 to the boom 4 or the beam, and in the condition that the suspension hook 12 and the auxiliary rope 21 are locked on/under the heavy material W, the winch device 6 is operated so as to change the attitude of the heavy material within the vertical surface (turnover in the vertical direction).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane device for lifting a heavy object, and more particularly to a crane device with a rope locking member capable of supporting a heavy object by shouldering in the air.

[0002]

2. Description of the Related Art Conventionally, as a crane device, there are a truck crane, a portal crane, an overhead crane and the like, each of which can lift or move a heavy object into the air.

[0003] Some heavy-weight products are stored at a predetermined angle (for example, 90 °) in a vertical plane when they are stored from the manufacturing stage, when they are transported from a storage state, or when the products are installed from a transport position. Or 180 °). For example, in the case of a heavy U-shaped groove product made of concrete, the open side faces downward during storage (dust and dust easily accumulate inside the U-shaped groove product when the open side faces upward), but during actual construction Install with the open side facing up. In addition, in the case of a heavy-weight cylindrical tube, it may be kept in a vertical position during storage for stability reasons and may be placed in a horizontal position during actual construction.

[0004] By the way, when the attitude of a heavy object is changed in the vertical plane (for example, upside down), if a single crane device (for example, a truck crane) is used, the large object is temporarily placed on the ground. With the hanging hook of the crane device locked on the side of the heavy object, the winch device of the crane device is slowly rolled up, and the heavy object is rotated at an angle of 90 ° in a vertical plane. Replace the heavy object on the next side, and rotate it again by 90 °. However, when the attitude of a heavy object is changed on the ground as described above, for example, a corner of the heavy object is likely to be lost at the time of a rotation operation of a heavy object such as a concrete product.

[0005] When a heavy object is rotated in the air, the problem of the corners being lost does not occur as described above. However, when a heavy object is rotated in the air, two cranes have conventionally been used. It is performed as follows using the device. That is, the hanging hook of the first crane device is locked on the upper surface of the heavy object, the heavy object is lifted into the air by the first crane device, and the hanging hook of the second crane device is connected to the heavy object. Lock on the lower surface (when rotated by 180 °) or the side surface (when rotated by 90 °). Next, by lifting the rope of the second crane device and simultaneously loosening the rope of the first crane device, the posture of the heavy object is gradually changed to a predetermined angle in the vertical plane.

[0006]

However, when changing the attitude of a heavy object in a vertical plane by using a single crane, if the heavy object is placed on the ground as described above, There is a problem that the corners of the heavy object come into contact with the ground and are likely to be broken during the rotation work. In addition, when a heavy object is turned upside down (rotated by 180 °), it is necessary to perform the operation twice at an angle of 90 °. There is also a problem that time becomes longer (work time becomes longer).

Further, as described above, if a heavy object is to be rotated in the air, it has conventionally been necessary to use two crane devices, so that there has been a problem that the equipment cost is high. . For example, when a heavy object is loaded on a truck (with a crane device) in an upside down position from a storage location, it is necessary to use another crane device in addition to the crane device of the own vehicle.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a crane device with a simple device so that a single crane device can change the attitude of a heavy object in the air. It is intended to provide a crane device.

[0009]

The present invention has the following structure as means for solving the above-mentioned problems.

[0010] The crane device with a rope locking device according to the first aspect of the present invention is a crane device in which a suspension hook suspended from a tip end of a boom by a rope can be raised and lowered by a winch device. In addition, a rope lock for connecting one end of the auxiliary rope to an appropriate position of the boom is provided.

[0011] The crane device with a rope locking device according to the present invention is applied to a crane device using a boom as used for a truck crane, for example.
The rope locking device may be any device that can lock one end of the auxiliary rope, and may be a locking device such as a hook or a U-bolt, or a simple hole. Further, the installation position of the rope locking device can be provided at an appropriate position on the boom. When this rope locking device is provided on the base end side of the boom, the other end of the auxiliary rope locked by the rope locking device may be hung around the boom tip. At this time, the hanging length of the auxiliary rope is set so that the heavy object does not come into contact with the ground when the heavy object is supported by the auxiliary rope.

When the posture of a heavy object is changed in the air using the crane device with the rope locking device according to the first aspect, the following is performed. First, the other end of the auxiliary rope is hung downward from the boom tip side while one end of the auxiliary rope having a predetermined length is locked to the rope locking member. Then, the hanging hook of the crane device is locked on the upper surface side of the heavy object placed in a posture different from the construction posture, the heavy object is lifted as it is to a predetermined height, and then the tip of the auxiliary rope is lifted. After engaging with the lower surface of the object, the winch device is slowly lowered to lower the hanging hook. Then, the heavy object sequentially rotates in the vertical plane from the point in time when the auxiliary rope is tensioned, and finally the heavy object is carried on the auxiliary rope in a state of being turned upside down. At this time, the rope of the hanging hook is loose. next,
After the hanging hook is replaced on the upper surface side of the heavy object (supported by the auxiliary rope), the winch device is wound up to move the hanging hook upward, and the heavy object is supported by the hanging hook. In this state, the auxiliary rope is loose. If the auxiliary rope is removed from the heavy object, the heavy object can be moved to a predetermined position in a normal posture (construction posture) by the crane device.

According to a second aspect of the present invention, there is provided the crane device with the rope locking device according to the first aspect, wherein a telescopic boom is used as the boom, and a plurality of ropes are provided between the end of the boom and the hanging hook. Along with winding, a rope locking device for connecting one end of the auxiliary rope is provided at an appropriate position on the proximal end boom other than the distal end boom,
Further, the auxiliary rope can be hung down through a sheave provided at the end of the boom.

The rope locking device is preferably mounted on the base end boom side of the telescopic boom. However, when the telescopic boom has three or more steps, the rope locking device may be mounted on the intermediate boom.

In the crane apparatus with the rope locking device according to the second aspect, a telescopic boom is used, and a plurality of ropes are wound (for example, four hooks) between the end of the boom and the suspension hook. In the boom type crane device, the lifting / lowering speed of the suspension hook corresponding to the boom extension / retraction operation decreases in inverse proportion to the number of ropes. Therefore, if the telescopic boom is extended without operating the winch device in a state where the upper surface of the heavy object is hung by the hanging hook and the tip of the auxiliary rope is locked to the lower surface of the heavy object, The heavy object can be turned upside down in the air by the difference in the amount of rise between the object and the tip of the auxiliary rope. In the crane device with the rope locking device according to the second aspect, it is needless to say that the suspension hook can be raised and lowered by using the winch device.

According to a third aspect of the present invention, there is provided a crane device with a rope locking device according to the third aspect of the present invention, in which a suspension hook suspended from a beam supported at a high place by a rope can be raised and lowered by a winch device. In the crane device, a rope lock is provided for connecting one end of the auxiliary rope to the beam.

The crane device with a rope locking device according to the third aspect is applied to a portal crane or an overhead crane. In the crane device with a rope hook according to the third aspect, when the hanging hook moves along the beam, a plurality of the rope hooks are provided at intervals in the length direction of the beam. This allows the hanging position of the auxiliary rope to be changed.

According to a fourth aspect of the present invention, there is provided a crane device with a rope locking tool according to the fourth aspect of the present invention, wherein a suspension hook suspended from a beam supported at a high place by a rope can be raised and lowered by a winch device. In a crane device, a winch device is attached to a beam, and a rope locking member for connecting one end of an auxiliary rope to the winch device is provided.

The crane device with a rope locking device according to the fourth aspect is also applied to a portal crane and an overhead crane. In this case, even when the winch device moves along the beam, the rope locking tool moves together with the winch device, so that the hanging position of the auxiliary rope follows the winch device. Can be.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS. 1 to 7. FIGS. 1 to 4 show a first embodiment, and FIG. 5 shows a second embodiment. 6, FIG. 6 shows a crane device with a rope lock according to a third embodiment, and FIG.

In the first embodiment shown in FIGS. 1 to 4, a truck crane is employed as a crane device. In this truck crane, a turning post 3 is provided on a bed 2 of a vehicle 1, and a telescopic boom 4 is attached to the upper end of the turning post 3 so as to be able to move up and down.

The telescopic boom 4 has a three-stage boom composed of a base boom 4A, an intermediate boom 4B and a distal boom 4C. The telescopic boom 4 is expanded and contracted by a telescopic device built in the boom, and is raised and lowered by a raising and lowering cylinder 5.
Note that the telescopic boom 4 may be a two-stage boom.

The hanging hook 12 is suspended from the boom tip 41. The hanging hook 12 is used for the turning post 3.
It is supported via a sheave 42 by a rope (wire rope) 11 from a winch device 6 provided in the portion. or,
Between the sheave 42 of the boom tip 41 and the suspension hook 12,
A plurality of (for example, four) ropes 11 are wound.

The base boom 4A of the telescopic boom 4 is provided with a rope lock 20 on the top surface of the distal end. The rope locking device 20 is for connecting one end of the auxiliary rope 21 and, in the illustrated example, is configured by attaching a U-bolt. In addition, this rope locking device 20 is
An appropriate structure can be adopted as long as one end can be locked, for example, it may be a simple hole. In another embodiment, the rope lock 20 is connected to the middle boom 4 of the telescopic boom 4.
B may be formed on the top surface of the tip.

A protruding base 43 is mounted on the front end surface of the boom front end 41 to protrude further forward. A sheave 44 is attached to the tip of the projecting base 43.

In the first embodiment, one end of the auxiliary rope 21 is locked (coupled) to the rope locking tool 20 formed on the base end boom 4A. It can be hung downward through the sheave 44. When the auxiliary rope 21 is not used,
The auxiliary rope 21 can be detached from the rope lock 20. In a state where the auxiliary rope 21 is removed, a normal crane operation can be performed only by the hanging hook 12.

The auxiliary rope 21 is provided with a rope lock 2
Attach the connecting sulcan 22 to the end locked at 0,
A hook (or sarkan) 23 for hooking (or connecting) may be attached to the other end of the auxiliary rope 21.

In the crane apparatus (truck crane) with a rope locking device according to the first embodiment shown in FIGS. 1 to 4, the heavy object W can be turned upside down as follows. In the first embodiment, a case is shown in which a heavy object W placed in a storage location (on the ground) in a direction opposite to the construction posture is placed on the bed 2 of the vehicle 1 in a normal posture (construction posture).
In the illustrated example, a U-shaped grooved product made of concrete is used as the heavy object W, but if it is necessary to change the posture in a vertical plane, it can be applied to a general-purpose heavy object.
Further, a suspension ring 15 (a plurality of suspension rings are provided for maintaining a weight balance) is attached to the bottom surface of the heavy object W, and suspension rings 16 and 16 are also attached to the front ends of the opposed side walls, respectively. Each of the suspension rings 16, 16 on the opposing side wall is
And a suspension ring 18 is attached to an intermediate portion of the rope 17. Further, a branch rope 19 is connected to the intermediate suspension ring 18.

As a preparatory step, as shown in FIG. 1, an auxiliary rope 21 having a predetermined length is
The other end (hook) 23 of the auxiliary rope 21 is hung downward through the sheave 44 of the protruding base 43 of the boom tip 41 while the one end (sarkan) 22 is locked.

Next, the hanging hook 12 of the crane device is connected via a hanging rope 14 to a hanging ring 15 of a heavy object W placed on the ground in a reverse orientation, and the winch device 6 is hoisted to operate the heavy object. W is lifted to a predetermined height in the air as shown in FIG.

Next, the tip hook 23 of the auxiliary rope 21
Is locked to the intermediate suspension ring 18 on the lower surface side of the heavy object W in the suspended state as indicated by reference numeral 23 ', and then the telescopic boom 4 is raised up to a predetermined angle, for example, as shown in FIG.

Next, when the winch device 6 is slowly lowered and the hanging hook 12 is lowered, the heavy object W sequentially rotates clockwise in the vertical plane from the time when the auxiliary rope 21 is tensioned. Finally, the heavy object W is carried on the auxiliary rope 21 in a state of being turned upside down, as shown by reference numeral W 'in FIG. At this time, the rope 11 of the hanging hook 12
Is loose.

Next, the hanging hook 12 is detached from the bottom surface of the heavy object W carried by the auxiliary rope 21, and a branch rope 19 is hung on the detached hanging hook 12 as shown by a solid line in FIG.

Next, the winch device 6 is hoisted up,
The lifting hook 12 is lifted to support the heavy object W with the lifting hook 12, and the telescopic boom 4 is moved to a predetermined angle as shown by reference numeral 4 'in FIG.
3) until it can be reached from the ground). At this time, the auxiliary rope 21 is loosened as indicated by the reference numeral 21 ', and the tip hook 23' is removed from the intermediate suspension ring 18 '.

Then, the hanging hook 12 is
May be placed on the loading platform 2 of the vehicle 1 in a normal posture (construction posture) (see FIG. 1).

Further, in the crane apparatus of the first embodiment, as shown by a solid line in FIG. 4, the heavy object W is hung by the hanging hook 12 in the reverse orientation, and the tip hook 23 of the auxiliary rope 21 is moved by the heavy object. In the state of being locked to the intermediate suspension ring 18 on the lower surface side of the W, the telescopic boom 4 can be
, The weight W can be turned upside down. That is, when the telescopic boom 4 is extended, the auxiliary rope 2
Since the rising speed of the one end hook 23 is increased, the heavy object can be turned upside down in the air as shown by a chain line in FIG.

As described above, in the crane device with the rope locking device according to the first embodiment shown in FIGS. 1 to 4, the boom 4 is provided with the rope locking device 20 for connecting the one end 22 of the auxiliary rope 21. When the auxiliary rope 21 is connected to the rope locking device 20 and is hung down from the end of the boom, the posture of the heavy object W is changed in the air by one crane device (truck crane) as described above. Can be done. The auxiliary rope 21 can be used not only for changing the attitude of the heavy object W in the air, but also for temporarily supporting the heavy object W during work.

In the crane device with a rope locking device according to the second embodiment shown in FIG. 5, the rope locking device 20 is formed at the tip of the projecting base 43 of the boom tip 41. In the second embodiment, a simple hole is employed as the rope locking device 20. Then, the auxiliary rope 2 is
One end 22 of the auxiliary rope 21 is connected, and the other end side (tip hook) 23 of the auxiliary rope 21 is used by hanging downward.

In the crane device according to the second embodiment, the lifting hook 12 is moved up and down by the winch device 6 so that the heavy object W can be turned upside down.

In the case where a truck crane is used as the crane device, in another embodiment, the boom 4 is used.
May be employed with only one rope, and a suspension hook 12 supported by one rope 11 may also be employed.

The crane device with a rope lock of the third embodiment shown in FIG. 6 is applied to a portal crane. That is, in this crane device, the winch device 6 is fixed to the beam 7 erected above the columns 8, 8, and the hanging hook 12 is suspended from the winch device 6 by the rope 11. Also, beam 7
In the vicinity of the winch device 6, a hook serving as a rope locking device 20 is attached near the winch device 6, so that the auxiliary rope 21 can be hung from the rope locking device 20. Note that, in the illustrated example, the rope locking device 20 is located on the left and right sides of the winch device 6.
It is provided in the place.

In the crane device according to the third embodiment, the upper portion of the heavy object W is locked by the hanging hook 12,
By lowering the winch device 6 from the state in which the lower part of the heavy object W is locked by the tip hook 23 of the auxiliary rope 21 (the state shown by the solid line), the heavy object W is turned upside down as shown by the chain line. Is available.

The crane device with a rope lock of the fourth embodiment shown in FIG. 7 is applied to an overhead crane. That is, in this crane device, the winch device 6 is movably attached to the beam 7 attached to the lower surface of the ceiling along the beam 7, and the hanging hook 12 is suspended from the winch device 6 by the rope 11. The winch device 6 is provided with a hook serving as a rope locking device 20 so that the auxiliary rope 21 can be hung from the rope locking device 20. In the fourth embodiment, the winch device 6 can move along the beam 7. However, since the rope locking device 20 is provided in the winch device 6, it can be moved together with the winch device 6. become.

The crane device of the fourth embodiment can be used similarly to the crane device of the third embodiment shown in FIG.
In the case where the winch device 6 is of a movable type, it is conceivable to form the rope locking device 20 on the beam 7. In this case, a plurality of the rope locking devices 20 are formed on the beam 7 at intervals. It is good to do so.

[0045]

According to the crane device with the rope locking device of the present invention, the rope locking device 20 for connecting the one end 22 of the auxiliary rope 21 to an appropriate position of the boom 4 is provided. When the auxiliary rope 21 is connected to the rope locking member 20 and the other end of the auxiliary rope 21 is hung downward, the hanging hook 12 of the winch device 6 and the auxiliary rope 21 And heavy goods W
Can be changed in a state of being floated in the air.
Accordingly, the heavy object W can be turned upside down in the air with one crane device, and the equipment cost can be reduced as compared with the conventional case using two crane devices (half the cost). ). Also, since it is only necessary to provide the rope locking tool 20 at an appropriate position on the boom 4, the structure is extremely simple, and there is an effect that the cost for improvement is low.

According to the second aspect of the present invention, in the crane device with the rope locking tool according to the first aspect, a telescopic boom is used as the boom 4,
Further, a plurality of ropes 11 are wound around the suspension hooks 12. Therefore, in the second aspect, in addition to the effect of the first aspect, there is an effect that the weight W can be turned upside down by the extension operation of the telescopic boom 4 without using the winch device 6.

Effects of the Inventions of Claims 3 and 4 of the Invention The crane device with a rope locking tool according to claims 3 and 4 of the present invention is applied to a portal crane or an overhead crane. In the lower part, the posture of the heavy object W can be changed (vertically inverted) by one crane device.

[Brief description of the drawings]

FIG. 1 is a side view showing a crane device according to a first embodiment of the present application.

FIG. 2 is a state change diagram from FIG.

FIG. 3 is a state change diagram from FIG. 2;

FIG. 4 is an explanatory view showing another method of using the crane device of FIG. 1;

FIG. 5 is a side view showing a crane device according to a second embodiment of the present application.

FIG. 6 is a side view showing a crane device according to a third embodiment of the present application.

FIG. 7 is a side view showing a crane device according to a fourth embodiment of the present application.

[Description of Signs] 1 is a vehicle, 2 is a carrier, 3 is a turning post, 4 is a boom (telescopic boom), 4A is a base end boom, 4B is an intermediate boom, 4
C is a tip boom, 5 is an up / down cylinder, 6 is a winch device, 7 is a beam, 11 is a rope, 12 is a hanging hook, 20 is a rope lock, 21 is an auxiliary rope, 41 is a boom tip,
W is heavy.

Claims (4)

[Claims] 1. A crane device in which a hanging hook (12) suspended by a rope (11) from a tip end (41) of a boom (4) can be raised and lowered by a winch device (6). Auxiliary rope (2)
A crane device with a rope lock, wherein a rope lock (20) for connecting one end of (1) is provided. 2. The telescopic boom according to claim 1, wherein a plurality of ropes (11) are wound between the boom tip (41) and the hanging hook (12), and the tip boom (4) is used. 4C) other than the base boom (4A, 4B)
A rope lock (20) for connecting one end of the auxiliary rope (21) is provided at an appropriate position in B), and the auxiliary rope (2) is further provided.
(1) A crane device with a rope lock which can be hung via a sheave (44) provided at a boom tip (41). 3. A crane device wherein a hanging hook (12) suspended from a beam (7) supported at a high place by a rope (11) can be raised and lowered by a winch device (6). ) Is provided with a rope lock (20) for connecting one end of the auxiliary rope (21). 4. A crane device wherein a hanging hook (12) suspended by a rope (11) from a beam (7) supported at a high place can be raised and lowered by a winch device (6). ) Is attached to the winch device (6), and a rope stopper (20) for connecting one end of an auxiliary rope (21) to the winch device (6).
A crane device with a rope locking device, comprising: