JPH11255471A - Hoisting cargo device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hoisting jig preventing shaking movement at moving time and rotating motion at lifting time. SOLUTION: In a hoisting jig, three sheaves 20 are movably mounted in three positions separated with the sheave 20 serving as each vertex of an almost regular triangle and in a single adjacent position in a main body 10, and a rope 4 is respectively wound to these three sheaves 20. In this way, when the rope 4 is placed in a position with three support parts serving as each vertex of almost a regular triangle, a rotating motion is prevented at lifting time, and when the three support parts of the rope 4 are placed in a single adjacent position, shaking movement is prevented at moving time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a tower crane,
The present invention relates to a lifting device in which a hanging jig is lifted and supported by a rope on a portal crane, a crane boom, or the like.

[0002]

2. Description of the Related Art A winch is mounted on a moving body that moves along a rail of a tower crane, a hook is lifted and supported by a rope that is wound and fed out by the winch, and a load is hung on the hook to move the moving body. 2. Description of the Related Art There is known a hanging load device that moves a load by taking up the rope, and also takes up and unwinds a rope to lift the load.

[0003]

In the above-mentioned hanging load device, the hook is lifted and supported by one rope, so that when the load is moved, the load swings in the moving direction, and when the load is moved up and down, the load is lifted. Rotates. Also, if the hook is lifted and supported by three ropes, the luggage can be prevented from swinging in the moving direction when the luggage is moved.
Rotational movement of luggage when lifting or lowering luggage cannot be prevented. In addition, if three points of the load are suspended and supported by three ropes, the load can be prevented from rotating when the load is raised or lowered, but the load cannot be shaken when the load is moved.

[0004] Therefore, an object of the present invention is to provide a lifting device capable of solving the above-mentioned problems.

[0005]

A first aspect of the present invention is to provide a hanging jig 5 in which a rope to be wound and fed by a winch is hung from three or more positions separated in a plane direction. The lifting jig 5 is supported by the above-described position, the rope is taken up and unreeled, the lifting jig 5 is moved up and down, and the lifting jig 5 is moved by moving a winch or a crane boom. And a plurality of rope supporting portions movably provided between a plurality of positions spaced apart in a plane direction and substantially one position approached in a plane direction.

According to the first invention, if the plurality of rope supporting portions are located at a plurality of positions separated in the plane direction, the hanging jig 5 can be provided.
The lifting jig 5 can be prevented from rotating when moving up and down. In addition, if the plurality of rope supporting portions are located at almost one position close to the plane direction, the hanging jig 5 can be prevented from swinging when the hanging jig 5 is moved.

According to a second aspect of the present invention, in the first aspect, the three sheaves 20 are provided on the main body 10 of the hanging jig 5 at three vertices of a substantially equilateral triangle having a spacing of approximately 120 degrees in the plane direction. And these three sheaves 20 are movably attached to almost one position close to the
This is a hoisting device in which ropes 4 hung from three positions that are each apex of a substantially equilateral triangle separated by degrees are wound around and supported respectively.

According to the second aspect of the present invention, if the three sheaves 20 are set at three separate positions, the three jigs 4 support the lifting jig 5 so that the three jigs 20 can be prevented from rotating when ascending and descending. And nearly 1 approached three sheaves 20
With three positions, the lateral load is supported by the three ropes 4 hanging down from the positions separated by approximately 120 degrees in the plane direction, so that it is possible to prevent swinging during movement.

According to a third aspect, in the second aspect, the first, second, and third sheaves 42, which are disposed so as to be vertices of a substantially equilateral triangle that are separated from each other by approximately 120 degrees in the plane direction,
46, 47, one rope 4 wound around one winch 49, and the hanging jig 5 according to claim 2, and this one rope 4 is connected to one of the hanging jigs 5 from the first sheave 42. The sheave 20, the other one sheave 20, the second sheave 46, and the third sheave 47 are wound around the remaining one sheave 20 of the suspending jig 5, and one sheave 20 of the suspending jig 5 and the other sheave 20. This is a hanging device in which a brake device 50 for fixing the rope 4 to one sheave 20 is attached.

According to the third aspect of the present invention, if the rope 4 and the sheave 20 are separated by the brake device 50, the hanging member 5 can be moved up and down by one rope 4, and the rope 4 is crimped to the sheave 20 by the brake device 50. If fixed, the hanging jig 5 can be held horizontally.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a moving body 3 moving along a rail 2 of a tower crane 1 is moved from three positions which are the tops of an equilateral triangle which is separated from each other by approximately 120 degrees in a plane direction. Three ropes 4 are hanging.
Each of the ropes 4 is wound and fed by a winch. In addition, you may wind and wind out with one winch. Each of the three ropes 4 is supported by a suspending jig 5, and a hook 6 is attached to the suspending jig 5. This forms a hanging load device.

As shown in FIGS. 2 and 3, the hanging jig 5 is provided with a cylinder tube 12 of a cylinder 11 mounted vertically at the center of the plate-shaped main body 10 in a plane.
The plate 14 is fixed to the piston rod 13 and three first links 15 are connected by a first pin 16 to three positions shifted by 120 degrees in the plane direction of the plate 14 so as to be vertically swingable. One end of a second link 17 is connected to the other end of each first link 15 by a second pin 18 so as to be swingable up and down, and each of the second links 17 is connected in a plane direction around the cylinder tube 12 of the main body 10. 3 shifted at 120 degree intervals
And a third pin 19 so as to be swingable up and down.

Each of the first links 15 and each of the second links 17
Are connected to the three ropes 4 respectively. For example, the rope 4 is wound around the sheave 20 attached to each second pin 18.

Next, the operation will be described. When the piston rod 13 of the cylinder 11 is contracted and brought to the position indicated by the solid line in FIG. 2, the three second links 17 become substantially horizontal in the radial direction, and the support portions (sheaves 20) of the three ropes 4 are connected to the main body 1.
The three vertices of the equilateral triangle which are separated by approximately 120 degrees in the plane direction of 0 are three separated positions. FIG. 4 schematically shows this state.

As a result, the main body 10 is horizontally supported by the three ropes 4, so that the main body 10 does not rotate when the rope 4 is wound up and extended to ascend and descend.

When the piston rod 13 of the cylinder 11 is extended and the plate 14 is moved upward as shown by the phantom line in FIG. 2, the first and second links 15 and 17 become substantially straight, and the three The support portion of the rope 4 approaches the center of the main body 10 and is substantially in one position. This state is schematically shown in FIG.

As a result, since the lateral force acting on the main body 10 is supported by the rope 4, the main body 10 does not swing in the moving direction when the traveling body 3 moves along the rail 2 and the main body 10 moves. .

The piston rod 13 of the cylinder 11
Is assumed to be an intermediate position between the solid line position and the imaginary line position in FIG. 2, each sheave 20 is at an intermediate position between the solid line position and the imaginary line position, and the three support portions of the rope 4 Since the position is an intermediate position, the rotational movement and the swinging movement can be restricted to some extent.

Next, a second embodiment of the hanging jig 5 will be described. As shown in FIG. 6, one end of the second link 17 is connected to the intermediate portion of the first link 15 so as to be vertically swingable by a second pin 18, and the other end of the second link 17 is connected to the cylinder tube 1.
2 is connected by a third pin 19 so as to be able to swing up and down. The other end of the first link 15 supports the rope 4. For example, the sheave 20 is attached to the other end of the first link 15 and the sheave 2
Wrap rope 4 around 0.

The operation of the hanging jig 5 is the same as that of the hanging jig 5 described above.

Next, a third embodiment of the hanging jig 5 will be described. As shown in FIG. 7, three guide members 21 are radially attached to the main body 10 at intervals of 120 degrees on a plane. The sheaves 20 are provided movably by the cylinders 23 along the guide grooves 22 of the respective guide members 21, and the ropes 4 are wound around the respective sheaves 20.

In the case of the hanging jig 5, the sheaves 20 are moved by the cylinders 23 so that the support portions of the three ropes 4 are located near the center of the main body 10 and the vertices of the main body 10 in a substantially triangular plane. Since it moves to the position, it functions similarly to the above-described hanging jig 5.

Next, a fourth embodiment of the present invention will be described. As shown in FIG. 8, racks 24 are movably provided along three guide members 21 attached to the main body 10, and sheaves 20 are attached to the respective racks 24. Three pinions 26 driven by three motors 25 attached to the main body 10 mesh with the respective racks 24. The rope 4 is wound around each sheave 20.

In the case of the hanging jig 5, the pinion 26 is driven by the motor 25 so that the rack 24
1 and the sheave 20 moves along the guide groove 22, so that it functions in the same manner as the above-described hanging jig 5.

As shown in FIG. 9, the hanging jig 5 may be supported on three ropes 4 provided on a moving body 32 which moves along the rail 31 of the portal crane 30 in the same manner as described above.

The lifting jig 5 may be lifted and supported on a crane boom 40 as shown in FIG. The crane boom 40 is a multi-stage telescopic type. A first sheave 42 is attached to a leading end boom 41, left and right auxiliary booms 44 and 45 are attached to a second boom 43, and left and right auxiliary booms 44 and 45 are attached to the crane booms. Second and third sheaves 46 and 47 are respectively attached. As a result, the first, second, and third sheaves 42, 46, and 47 are disposed at three positions that are substantially the vertices of an equilateral triangle.

The rope 4 is wound around a winch 49 attached to a fixed boom 48 of the crane boom 40, and the rope 4
Is wound around one sheave 20 from the first sheave 42 and is wound around the other sheave 20 from the sheave 20 to form the second sheave 4.
After passing through No. 6, it is wound from the third sheave 47 to the remaining sheave 20. In FIG. 10, the three sheaves 20 are movable by any one of the first, second, third, and fourth embodiments, but are not shown. .

A brake device for fixing the rope 4 wound around the one sheave 20 and the other one sheave 20 to the sheave 20 is provided. This brake device 50 is shown in FIG.
As shown in the figure, the bracket 5 fixed to the first link 15
1, a lever 52 is swingably supported by a pin 53, a brake cylinder 55 is connected to the lever 52 and a rod 54 fixed to the bracket 51, and a brake pad 56 is opposed to the sheave 20 by the lever 52. Installed.

Next, the operation will be described. When the brake cylinder 55 is contracted and the brake pad 56 is separated from the rope 4 as shown by a virtual line in FIG.
When the rope 4 is wound up and fed out, the main body 10 moves up and down, so that the main body 10 can be moved up and down by one rope 4.

When the brake cylinder 55 is extended and the brake pad 56 is crimped to the rope 4 as shown by a solid line in FIG. 11, the rope 4 is fixed to the sheave 20, so that the main body 10 can be held horizontally. .

The brake device 50 may be shaped as shown in FIG. The brake disc 57 is fixed to the sheave 20, and the bracket 58 is fixed to the first link 15. A pair of brake pads 59 and an actuator 60 are attached to the bracket 58, and the actuator 60 is operated to hold the brake disk 57 between the pair of brake pads 59 and brake the sheave 20.

It should be noted that three ropes 4 may be wound around the first, second, and third sheaves 42, 46, and 47 in FIG. 10, respectively, and these ropes 4 may be wound around a winch 49 and wound up and fed out. good.

Although the hook 6 is attached to the main body 10 of the hanging jig 5, the present invention is not limited to the hook 6, and another working machine may be attached.

The number of the ropes 4 is not limited to three, but may be three or more such as four or five. In this case, the number of the rope supporting portions of the main body 10 is three or more.

[Brief description of the drawings]

FIG. 1 is a front view in which a lifting jig is lifted and supported by a tower crane.

FIG. 2 is a front view showing the first embodiment of the hanging jig.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a schematic explanatory view showing a state where three rope support portions are provided.

FIG. 5 is a schematic explanatory view showing a state where a rope support portion is set to one point.

FIG. 6 is a front view showing a second embodiment of the hanging jig.

FIG. 7 is a plan view showing a third embodiment of a hanging jig.

FIG. 8 is a plan view showing a hanging jig according to a fourth embodiment.

FIG. 9 is a front view of a state in which the lifting jig is lifted and supported by a portal crane.

FIG. 10 is a front view of a state in which the lifting jig is lifted and supported on the crane boom.

FIG. 11 is a front view of the brake device.

FIG. 12 is a side view showing another embodiment of the brake device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tower crane 2 ... Rail 3 ... Moving body 4 ... Rope 5 ... Hanging jig 6 ... Hook 10 ... Main body 11 ... Cylinder 15 ... 1st link 17 ... 2nd link 20 ... Sheave 21 ... Guide member 22 ... Guide groove 23 ... Cylinder 24. Rack 25. Motor 26. Pinion 30. ... Lever 55 ... Brake cylinder 57 ... Brake disc 59 ... Brake pad 60 ... Actuator

Continuation of the front page (72) Inventor Shoichiro Inatomi 2-3-6 Akasaka, Minato-ku, Tokyo Komatsu Ltd. Head Office

Claims (3)

[Claims] 1. A rope to be wound and fed by a winch is suspended from three or more positions separated in a plane direction and supported at three or more positions of a hanging jig (5), and the rope is wound.・ Extend the lifting jig (5)
In a hanging load device that moves a winch or a crane boom to move a hanging jig (5), the hanging jig (5) is provided with a plurality of rope support portions at a plurality of positions separated in a plane direction and in a plane direction. A hoisting device characterized by being provided movably between substantially one position approached. 2. A main body (10) of a suspending jig (5) having three sheaves (20) near three vertices of a substantially equilateral triangle which is separated from each other by approximately 120 degrees in a plane direction. The three sheaves (20) are movably attached to one position, and the three sheaves (20) are respectively wound with ropes (4) hanging down from three positions, each of which is a vertex of a substantially equilateral triangle separated by approximately 120 degrees in the plane direction. The hanging load device according to claim 1, which is supported by being hung. 3. A first and a second arrangement which are arranged so as to be each vertex of a substantially equilateral triangle which is separated from each other at an interval of about 120 degrees in a plane direction.
A third sheave (42), (46), (47), one rope (4) wound around one winch (49), and a hanging jig (5) according to claim 2; One rope 4 is suspended from the first sheave (42) to one sheave (20) of the jig (5), another sheave (20), and the second sheave (4).
6) passing through the third sheave (47) around the remaining one sheave (20) of the suspending jig (5), and suspending the suspending jig (5).
And a brake device (50) for fixing the rope (4) to one of the sheaves (20) and the other one of the sheaves (20).