Reinforced concrete pipe hoisting tool

Abstract

The utility model relates to the technical field of reinforced concrete pipe hoisting, in particular to a reinforced concrete pipe hoisting tool which comprises a middle steel pipe, inner steel pipes are arranged on the left side and the right side of an inner cavity of the middle steel pipe in a penetrating mode, and outer steel pipes are fixedly welded to the ends, away from the middle steel pipe, of the inner steel pipes. The lifting appliance solves the problems that according to an existing common lifting mode, due to the fact that the weights of the two ends of a pipeline are different, the pipeline slides in the lifting process or the lifting appliance is fractured and falls off to hurt people, the lifting appliance is abraded and fractured, the pipeline is not prone to being kept stable in the falling process, and the contact portion of the pipeline is prone to being damaged. The lifting appliance can adapt to reinforced concrete pipes of different sizes, the lifting appliance does not need to be frequently replaced, the lifting time is saved, the lifting cost is reduced, the stability of the reinforced concrete pipes in the lifting process is guaranteed, concrete pipe lifting can be stably assisted, damage to the concrete pipes is effectively reduced, and meanwhile the safety of related personnel is guaranteed to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting of reinforced concrete pipes, and particularly relates to a hoisting tool for reinforced concrete pipes. Background Technique

[0002] In municipal pipe network projects, large-diameter reinforced concrete pipes are usually required, and hoisting equipment is often needed to assist in hoisting and installation during the transfer and installation of pipe sections.

[0003] At present, the commonly used hoisting methods mainly include ordinary hoisting with a sling wound around the outer periphery of the pipe or through-hoisting with a rigid material such as a sling or a steel pipe. For ordinary hoisting with a sling, due to the different weights at both ends of the pipe, the pipe may slip during hoisting or the sling may break and fall, injuring people. For through-hoisting with a sling, on the one hand, it will accelerate the wear of the sling and easily cause the sling to break. On the other hand, it is not easy to keep the pipe stable during the falling process of the pipe, and it is easy to injure the auxiliary positioning personnel at the bottom of the trench. For through-hoisting with a rigid material, it is easy to cause damage at the contact part of the pipe, affecting the service life of the pipe.

[0004] Therefore, it is necessary to study a hoisting tool for reinforced concrete pipes to stably assist in the hoisting operation of large-diameter concrete without damaging the pipe, reduce the safety risks of hoisting operations, and maximize the safety of relevant operators. Content of the Utility Model

[0005] The purpose of the utility model is to provide a hoisting tool for reinforced concrete pipes aiming at the deficiencies of the prior art, which has the advantages of low cost, durability and stable hoisting, and solves the problems that the commonly used hoisting methods at present may cause the pipe to slip during hoisting or the sling to break and fall, injuring people due to the different weights at both ends of the pipe, resulting in wear and breakage of the hoisting tool, and it is not easy to keep the pipe stable during the falling process of the pipe, and it is easy to cause damage at the contact part of the pipe.

[0006] The technical purpose of the utility model is realized through the following technical solutions:

[0007] A hoisting tool for reinforced concrete pipes includes an intermediate steel pipe. Inner steel pipes are penetrated and arranged on both the left and right sides of the inner cavity of the intermediate steel pipe. One end of the inner steel pipe far away from the intermediate steel pipe is fixedly welded with an outer steel pipe. A lifting ring is fixedly welded on one side of the outer steel pipe top far away from the inner steel pipe. Arc-shaped steel sheets are fixedly welded on both the left and right sides of the intermediate steel pipe top and on one side of the outer steel pipe top close to the inner steel pipe.

[0008] Preferably, the surface of the inner steel pipe is in sliding contact with the inner cavity of the intermediate steel pipe, and the size of the outer steel pipe is the same as that of the intermediate steel pipe.

[0009] Preferably, sliding holes are penetrated and opened on both the left and right sides of the front and rear sides of the middle steel pipe, and limiting sliders are fixedly welded on both the front and rear sides of the part of the inner steel pipe located in the inner cavity of the middle steel pipe.

[0010] Preferably, an anti-slip gasket is fixedly connected to the top of the arc-shaped steel sheet, and the anti-slip gasket is supported by rubber material.

[0011] Preferably, a rectangular square groove is opened at the bottom of the arc-shaped steel sheet, and the middle steel pipe and the outer steel pipe are fixedly welded inside the rectangular square groove.

[0012] Preferably, the size of the limiting slider is adapted to the sliding hole, and the outer surface of the limiting slider is in sliding contact with the inner wall of the sliding hole.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By arranging a telescopic and slidable inner steel pipe inside the middle steel pipe, the present utility model can adjust its position inside the middle steel pipe, so as to adjust different lengths according to the length of the reinforced concrete pipe, to adapt to the use of reinforced concrete pipes of different sizes, without frequently replacing the lifting tool, saving the lifting time, reducing the lifting cost, and using the arc-shaped steel sheet to tightly adhere to the inner wall of the reinforced concrete pipe, effectively ensuring the stability of the reinforced concrete pipe during the lifting process, and arranging an anti-slip gasket on the contact surface, so that the inner wall of the reinforced concrete pipe does not directly contact the arc-shaped steel sheet, will not cause damage to it, and at the same time can increase the friction force to avoid the shaking of the concrete pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 2 is a three-dimensional structure schematic diagram of the present utility model seen from below;

[0017] Figure 3 is a three-dimensional exploded view of the partial structure of the present utility model seen from below;

[0018] Figure 4 is a three-dimensional structure schematic diagram of the present utility model for hoisting with a concrete pipe seen from below.

[0019] In the figure: 1, middle steel pipe; 2, sliding hole; 3, anti-slip gasket; 4, inner steel pipe; 5, outer steel pipe; 6, lifting ring; 7, arc-shaped steel sheet; 8, limiting slider. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] In some embodiments, please refer to Figures 1 - 4 , a hoisting tool for reinforced concrete pipes, which includes an intermediate steel pipe 1. Inner steel pipes 4 are penetrated through both the left and right sides of the inner cavity of the intermediate steel pipe 1. One end of the inner steel pipe 4 far from the intermediate steel pipe 1 is fixedly welded with an outer steel pipe 5. A lifting ring 6 is fixedly welded to one side of the top of the outer steel pipe 5 far from the inner steel pipe 4. Arc-shaped steel sheets 7 are fixedly welded to both the left and right sides of the top of the intermediate steel pipe 1 and one side of the top of the outer steel pipe 5 close to the inner steel pipe 4;

[0022] In some embodiments, please refer to Figure 1 and Figure 2 , the surface of the inner steel pipe 4 is in sliding contact with the inner cavity of the intermediate steel pipe 1, and the size of the outer steel pipe 5 is the same as that of the intermediate steel pipe 1;

[0023] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 , sliding holes 2 are penetrated through both the left and right sides of the front and rear sides of the intermediate steel pipe 1. Limiting sliders 8 are fixedly welded to both the front and rear sides of the part of the inner steel pipe 4 located in the inner cavity of the intermediate steel pipe 1;

[0024] In some embodiments, please refer to Figure 1 , an anti-slip gasket 3 is fixedly connected to the top of the arc-shaped steel sheet 7. The anti-slip gasket 3 is supported by rubber material. By setting the anti-slip gasket 3, on the one hand, it can protect the inner wall of the reinforced concrete pipe to avoid friction or damage caused by the direct contact between the arc-shaped steel sheet 7 and the reinforced concrete pipe. On the other hand, it can increase the friction force with the inner wall of the reinforced concrete pipe to avoid the random sliding of the arc-shaped steel sheet 7 and improve the stability during the hoisting process;

[0025] In some embodiments, please refer to Figure 2 and Figure 3 , a rectangular square groove is opened at the bottom of the arc-shaped steel sheet 7. The intermediate steel pipe 1 and the outer steel pipe 5 are both fixedly welded inside the rectangular square groove. By setting the rectangular square groove, the intermediate steel pipe 1 and the outer steel pipe 5 can be more stably welded to the arc-shaped steel sheet 7 to avoid the fracture of the lifting tool;

[0026] In some embodiments, please refer to Figure 3, the size of the limit slider 8 is adapted to the sliding hole 2, and the outer surface of the limit slider 8 is in sliding contact with the inner wall of the sliding hole 2. By providing the limit slider 8 and the sliding hole 2, the inner steel pipe 4 can be limited to prevent it from falling off the inner wall of the middle steel pipe 1, ensuring the integrity of the lifting tool;

[0027] In some embodiments, the device has a low cost, is convenient to manufacture and use, and can be reused for a long time. It can effectively protect the concrete pipes during the lifting process, and at the same time effectively ensure the safety of the lifting and installation process, having high social and economic benefits.

[0028] During use, place the lifting tool inside the reinforced concrete pipe, make the middle steel pipe 1 located in the middle of the reinforced concrete pipe, then place the arc-shaped steel sheet 7 upwards, and then pull the outer steel pipes 5 on both sides to drive the inner steel pipe 4 to extend from inside the middle steel pipe 1. At this time, the limit slider 8 slides on the inner wall of the sliding hole 2 until the tail end of the outer steel pipe 5 moves outside the reinforced concrete pipe, and the arc-shaped steel sheet 7 at the top of the outer steel pipe 5 is exactly located at the edge inside the reinforced concrete pipe. The inner wall of the reinforced concrete pipe is supported by four arc-shaped steel sheets 7, two in the middle part and one on each side, so as to achieve the effect of uniform force, disperse the stress points of the lifting tool, play a role in protecting the lifting tool, extend the service life of the lifting tool, and finally hang the hook inside the hanging ring 6 to lift it.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A reinforced concrete pipe lifting tool, comprising an intermediate steel pipe (1), characterized in that: Inner steel pipes (4) are provided through the left and right sides of the inner cavity of the intermediate steel pipe (1); an outer steel pipe (5) is fixedly welded to one end of the inner steel pipe (4) away from the intermediate steel pipe (1); a lifting ring (6) is fixedly welded to the top of the outer steel pipe (5) away from the inner steel pipe (4); and arc-shaped steel sheets (7) are fixedly welded to the left and right sides of the top of the intermediate steel pipe (1) and to the side of the top of the outer steel pipe (5) close to the inner steel pipe (4).

2. A reinforced concrete pipe lifting tool according to claim 1, characterized in that: The surface of the inner steel tube (4) is in sliding contact with the inner cavity of the middle steel tube (1), and the size of the outer steel tube (5) is the same as that of the middle steel tube (1).

3. A reinforced concrete pipe lifting tool according to claim 1, characterized in that: Sliding holes (2) are provided through the left and right sides of the front and rear sides of the middle steel pipe (1), and limiting sliding blocks (8) are fixedly welded to the front and rear sides of the inner steel pipe (4) located in the inner cavity of the middle steel pipe (1).

4. A reinforced concrete pipe lifting tool according to claim 1, characterized in that: The top of the arc-shaped steel sheet (7) is fixedly connected to an anti-skid pad (3), and the anti-skid pad (3) is supported by a rubber material.

5. The reinforced concrete pipe lifting tool according to claim 1, characterized in that: A rectangular square groove is provided at the bottom of the arc-shaped steel sheet (7), and the middle steel pipe (1) and the outer steel pipe (5) are both fixedly welded inside the rectangular square groove.

6. A reinforced concrete pipe lifting tool according to claim 3, characterized in that: The size of the limiting slider (8) is matched to the sliding hole (2), and the outer surface of the limiting slider (8) is in sliding contact with the inner wall of the sliding hole (2).

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