JP3326167B1 - Lifting equipment - Google Patents

Abstract

An object of the present invention is to provide a pinch lifting device capable of automatically setting a distance between an upper rod and a lower rod and adjusting a length of the upper rod and the lower rod. The lower end of a substantially knife-shaped knife-like lock member A provided with a protruding portion 1 at the lower end of the upper rod 4 is rotatably attached to the center of the lower rod 3.
When the step 2 of the lock member A is applied to the lock pin 5 of the lock member A, the lock member A stops in the forwardly inclined posture, and the protruding portion 1 of the lock member A is pushed down by the lock release rod 6 of the upper rod 4 to lock the lock member A. When A is rotated backward, the stopper pin 7 of the upper rod 4 hits the lower part of the expanded portion b on the back of the lock member A that has been rotated backward, and the lock member A can be stopped. The length of the upper rod 4 and the lower rod 3 is adjustable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding and lifting device.

[0002]

2. Description of the Related Art By expanding and contracting a distance between an upper rod and a lower rod, clamping portions attached to both ends of the upper rod and the lower rod are closed and opened.
In a conventional nipping and lifting apparatus configured to be able to pinch and detach an object, an operator expands and contracts a distance between an upper rod and a lower rod by a predetermined length, and closes and opens the nipping part, thereby However, there was a drawback that labor saving was not possible because the device was pinched and detached.

[0003] Further, since the length of the upper and lower poles is fixed to a fixed length, for example, in the case of transporting pipes having different lengths, the upper and lower poles corresponding to the lengths must be adjusted. There is a drawback in that it is necessary to select and use a holding and lifting device provided.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks described in the prior art, and it is an object of the present invention to provide an upper rod and a lower rod.

[0005]

When the upper rod is lowered by a predetermined length, the upward movement of the upper rod can be automatically locked. When the upper rod is further lowered in the locked state, the lock can be automatically released. Alternatively, the lock can be artificially released by an operator.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, by expanding and contracting the interval between the upper rod 4 and the lower rod 3,
The holding parts B attached to both ends of the upper rod 4 and the lower rod 3 are closed and opened,
As shown in an enlarged manner in FIG. 2, in a holding and lifting device configured to be able to hold and detach an object 8 such as a pipe, a projecting portion 1 is provided at a lower end portion of a back portion, and a middle portion of an abdomen is provided. A step 2 is provided, and the lower end of a substantially blade-shaped knife-like lock member A provided with a straight portion a slightly inclined upward from the tip of the step 2 and an inflated portion b at the top of the back is turned around the center of the lower rod 3. It is movably mounted.

The holding portion B is made up of, for example, link members C1, C2, and C3 and a holding member E bent in a U-shape, as shown in FIGS. The other end of the link member C1 and the upper end of the holding member E are rotatably connected to each other so that the upper end is crossed to the upper rod 4 so as to be rotatable. The other end of the link member C2 and the link member C3 are rotatably attached to the lower pole 3.
Are rotatably connected to each other, the link member C3 crosses the holding member E, and the other end of the link member C3 is rotatably attached to the lower rod 3.

Therefore, when the distance between the upper rod 4 and the lower rod 3 is expanded or contracted, the holding member E closes and opens as shown by the arrow 9 in FIGS. 1 and 5, and holds the object 8 such as a pipe. Alternatively, the object 8 such as a pipe or the like that has been held can be detached. Note that the structure of the holding portion B is not limited to the above structure, and a structure in which an object 8 such as a pipe can be held and detached by expanding and contracting the interval between the upper rod 4 and the lower rod 3. All of them can be applied as long as the holding portion B is provided.

As shown in FIG. 2, the lock pin 5 is provided on the upper rod 4 at a position where the lock member A can stand still in the forwardly inclined posture when the lock pin 5 is hooked on the step 2 of the lock member A. I have. As shown in FIG. 2, when the lock pin 5 is hung on the step 2 of the lock member A, the holding member E is opened and the object 8 such as a pipe is separated as shown in FIG. And so on.

As shown in FIGS. 2 and 3, the projecting portion 1 of the lock member A is pushed down on the upper rod 4 behind the lock pin 5,
An unlocking rod 6 for rotating the lock member A backward and a stopper pin 7 for receiving the rotated lock member A in contact with the lower portion of the expanding portion b on the back thereof are provided.

FIG. 3 shows a state in which the upper rod 4 is lowered, and
Pushes down the protruding portion 1 of the lock member A, rotates the lock member A backward, and shows a state in which the stopper pin 7 abuts on the lower portion of the expansion portion b of the lock member A and receives the lock member A. In this state, the lock of the upper rod 4 is released, and the upper rod 4 can freely move upward.

When the upper rod 4 is lifted and moved upward from the state shown in FIG. 3, the stopper pin 7 hits the inflated portion b of the lock member A and raises the lock member A as shown in FIG. Then, the lock member A is set to the forward inclined posture. Then
The lock member A rotates forward by its own weight, and the linear portion a of the lock member A hits the lock pin 5 and is received. In this state, the holding member E is closed, and the tip of the holding member E tightly holds the object 8 such as a pipe.

When the upper rod 4 is lowered from the state shown in FIG. 4, the lock pin 5 is automatically engaged with the step 2 of the lock member A as shown in FIG. Is locked, the holding member E is opened, and the object 8 such as a pipe is detached.

An example of the second embodiment of the present invention will be described with reference to the drawings. As shown in FIG.
A clamping and lifting device configured to be capable of clamping and detaching an object by expanding and contracting an interval between the upper rod 4 and the lower rod 3 to close and open the clamping portions attached to both ends of the upper and lower rods. 6, a handle 14 is provided at the upper part of the back, a step 2 is provided at an intermediate part of the abdomen, and a substantially knife-shaped knife having a straight part a slightly inclined upward from the tip of the step 2. The lower end of the lock member A ′ at the center of the lower rod 3,
When the lock pin 5 is applied to the upper rod 4 and the lock pin 5 is hooked on the step 2 of the lock member A ', the lock member A' is substantially in an upright posture. It is provided at a position where it can be stopped.

In the first invention and the second invention, the upper rod 4 and the lower rod 3 are, as shown in FIGS. 1 and 5, members D, D provided with a plurality of bolt holes 10 at predetermined intervals. The bolts 10 of the members D and D 'can be joined together so that the members D and D' can be adjusted to the length of the object 8 such as a pipe to be clamped. As the members D and D ',
Steel plate, iron plate, prism and the like are used.

In FIGS. 1 and 5, reference numeral 11 denotes a hook, reference numeral 12 denotes a wire, and reference numeral 13 denotes a holder attached to the lower rod 3.

In implementation, in the first invention, for example, as shown in FIG.
When the rod 3 is left standing on an object 8 such as a pipe, the upper rod 4 is lowered by its own weight, the distance between the upper rod 4 and the lower rod 3 is reduced, and the lock pin 5 is automatically attached to the step 2 of the lock member A. The holding member E of the holding portion B is opened, and the object 8 such as a pipe, which has been held, is released from the holding member E, or a state in which the object 8 such as a pipe is to be held by the holding member E.

An object 8 such as a pipe that has been held is held by a holding member E.
In this state, the wire 12 may be lifted when the wire 12 is released. When an object 8 such as a pipe is to be clamped, the upper rod 4 is further lowered, and the lock member A is rotated backward as shown in FIG. The wire 12 is lifted in this state.

Then, the holding member E of the holding portion B is closed, and the object 8 such as a pipe can be automatically held and moved to the destination. At the destination, the upper rod 4 is lowered and the lock pin 5 is hooked on the step 2 of the lock member A, as shown in FIG. 2, to lock the upward movement of the upper rod 4, open the holding member E, and open the pipe. Is detached. These series of movements are automatically performed only by lowering the upper rod 4.

In the second invention, for example, as shown in FIG. 5, when the wire 12 is loosened and the holder 13 is allowed to stand on an object 8 such as a pipe, the upper rod 4 is lowered by its own weight. Upper pole 4
The distance between the lower rod 3 and the lower rod 3 is reduced, the lock pin 5 is automatically hooked on the step 2 of the lock member A, the clamp member E of the clamp portion B is opened, and the pinched object 8 such as a pipe is removed from the clamp member E. Escape or a state in which an object 8 such as a pipe is to be clamped by the clamping member E.

The object 8 such as a pipe that has been held is held by a holding member E.
In this state, the wire 12 may be lifted when the wire 12 is released. When an object 8 such as a pipe is to be clamped, an operator grasps a rope (not shown) attached to the handle 14 of the lock member A ', pulls it backward, and indirectly pulls the handle 14 from a distant position. The lock member A ′ is rotated backward against the spring force of the spring 15 to lock the lock member A ′.
Step 2 is removed from the lock pin 5 and the wire 1 is
When the worker releases the rope when the lock pin 5 reaches the linear portion a of the lock member A 'as shown in FIG. 7, the lock member A' It is rotated forward by the force, hits the lock pin 5 and is received.

Further, when the upper rod 4 is lifted, the holding portion B
Is closed, and the object 8 such as a pipe can be automatically held and moved to the destination. At the destination,
When the wire 12 is loosened, the upper rod 4 lowers by its own weight against the spring force of the spring 15, and as shown in FIG.
Is locked, the holding member E is opened, and the object 8 such as a pipe is detached.

[0023]

Since the present invention is configured as described above, it has the following effects. With a simple operation of lowering or raising the upper rod,
The object to be carried can be automatically and semi-automatically held by the holding member of the holding portion, or the carried object can be automatically separated from the holding member of the holding portion. Therefore, labor can be saved and work is safe. Since the length of the upper and lower rods can be adjusted, one tool can handle a variety of pipes with different lengths.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the invention.

FIG. 2 is an enlarged view of a portion surrounded by a dotted line in FIG.

FIG. 3 is an enlarged view showing a state where an upper rod is unlocked in FIG. 2;

FIG. 4 is an enlarged view showing a state in which the upper rod is lifted in FIG. 3;

FIG. 5 is a side view showing another embodiment of the present invention;

FIG. 6 is an enlarged view of a portion surrounded by a dotted line in FIG. 5;

FIG. 7 is an enlarged view showing a state where an upper rod is unlocked in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Projecting part 2 Step 3 Lower rod 4 Upper rod 5 Lock pin 6 Unlocking rod 7 Stopper pin 8 Pipe etc. 9 Arrow 10 Bolt hole 11 Hook 12 Wire 13 Receiver 14 Handle 15 Spring A, A 'Lock member B Holding portion C Link material D, D 'member E Holding member a Linear portion of lock member b Expansion portion of lock member

Claims (2)

(57) [Claims] 1. By expanding and contracting the distance between the upper rod and the lower rod,
In a clamping and lifting device configured so that clamping portions attached to both end portions of the upper rod and the lower rod can be closed and opened, a projecting portion (1) is provided at a lower end portion of a back portion. A substantially knife-like lock in which a step (2) is provided in the middle part of the abdomen, and a straight part (a) slightly inclined upward from the tip of the step (2) and an inflatable part (b) is provided at the upper part of the back. The lower end of the member (A) is rotatably attached to the center of the lower rod (3), and a lock pin (5) is mounted on the upper rod (4). ), The lock member (A) is provided at a position where the lock member (A) can stand still in a forwardly inclined posture, and the lock member (A) is attached to the upper rod (4) behind the lock pin (5). (A) Projection (1)
Is pressed down, and the unlocking rod (6) for rotating the lock member (A) backward and the rotated lock member (A) abut against the lower part of the inflated portion (b) on the back of the lock member (A). Lifting device characterized by having a stopper pin (7) for receiving it. 2. By expanding and contracting the distance between the upper rod and the lower rod,
In a clamping and lifting device configured so that clamping portions attached to both ends of the upper rod and the lower rod can be clamped and detached, a handle (14) is provided at an upper portion of a back portion, and an abdomen is provided. A step (2) is provided at an intermediate portion, and a lower end of a substantially blade-shaped knife-shaped lock member (A ') provided with a straight portion (a) slightly inclined upward from the tip of the step (2) is attached to a lower rod ( 3)
Is attached to the upper part (4) by a spring force of a spring (15) so as to be always rotatable forward.
The lock member (A ') is provided at a position where the lock member (A') can stand still in a substantially upright posture when the lock pin (5) is engaged with the step (2) of the lock member (A '). To hold the lifting equipment