Round tube lifting claw

Abstract

The utility model relates to the technical field of round tube processing, in particular to a round tube lifting claw which comprises a first lifting claw and a second lifting claw, the first lifting claw is composed of a first connecting plate and a first ring clamp, the first ring clamp is arranged at the top end of the first connecting plate, and the second lifting claw is composed of a second connecting plate and a second ring clamp. Anti-skid assemblies are arranged on the inner sides of the first ring clamp and the second ring clamp, and each anti-skid assembly comprises an arc-shaped plate welded to the inner side of the first ring clamp and the inner side of the second ring clamp; a movable positioning assembly is arranged between the first lifting claw and the second lifting claw; when the first lifting claw and the second lifting claw move downwards, the first connecting plate and the second connecting plate move downwards due to the dead weight, so that the first ring clamp and the second ring clamp are opened outwards and can be arranged on the outer side of a circular pipe in a sleeving mode, and when the lifting equipment pulls the first lifting claw and the second lifting claw through the lifting hook and the chain, the first connecting plate and the second connecting plate are driven to move upwards; and therefore, the first ring clamp and the second ring clamp are driven to clamp the circular pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of round pipe processing, in particular to a round pipe lifting claw. Background Art

[0002] A round pipe refers to a steel pipe with open ends and a hollow concentric circular cross-section, and its length is relatively large compared to its circumference. It can be used for pipelines, thermal equipment, mechanical industry, oil geological drilling, containers, chemical industry and special purposes. Round pipes are a widely used type of pipe.

[0003] During the production and processing of pipes, various lifting tools are needed to lift them and move them into processing equipment. The existing lifting claws have a relatively complex structure and require manual operation by personnel to place them outside the pipe or clamp them outside the pipe, increasing the labor intensity of personnel. Therefore, a round pipe lifting claw is proposed. After moving the first lifting claw and the second lifting claw outside the pipe, they open outward due to their own weight, so that the first ring clamp and the second ring clamp can be sleeved outside the pipe. When lifting, the first ring clamp and the second ring clamp are tightened to clamp outside the pipe, without the need for manual operation by personnel. Summary of the Utility Model

[0004] In view of the problems in the prior art, the utility model provides a round pipe lifting claw. After moving the first lifting claw and the second lifting claw outside the pipe, they open outward due to their own weight, so that the first ring clamp and the second ring clamp can be sleeved outside the pipe. When lifting, the first ring clamp and the second ring clamp are tightened to clamp outside the pipe, without the need for manual operation by personnel.

[0005] The technical solution adopted by the utility model to solve its technical problems is a round pipe lifting claw, which includes a first lifting claw and a second lifting claw. The first lifting claw is composed of a first connecting plate and a first ring clamp, and the first ring clamp is arranged at the top of the first connecting plate. The second lifting claw is composed of a second connecting plate and a second ring clamp. An anti-slip component is arranged inside the first ring clamp and the second ring clamp, and the anti-slip component includes an arc-shaped plate welded to the inside of the first ring clamp and the second ring clamp.

[0006] An active positioning component is arranged between the first lifting claw and the second lifting claw. The active positioning component includes a pin shaft located between the first lifting claw and the second lifting claw. Limiting rings are sleeved at both ends of the pin shaft, and a plug pin rod is penetrated and sleeved inside the limiting rings. A lifting chain component is arranged at the top of the first lifting claw and the second lifting claw. The lifting chain component includes a hook located at the top of the first lifting claw and the second lifting claw, and chains are arranged at both ends of the bottom of the hook.

[0007] By adopting the above technical solution, the pipe claw composed of the first lifting claw and the second lifting claw is lifted by the hanging chain assembly. The first connecting plate and the second connecting plate move downward due to their own weight, causing the first clamping ring and the second clamping ring to open outward, so that they can be sleeved outside the round pipe. When the lifting equipment pulls the first lifting claw and the second lifting claw through the chain, the first clamping ring and the second clamping ring are driven to clamp the round pipe.

[0008] Specifically, a first lifting ring is welded to the top end of the first connecting plate, and a second lifting ring is welded to the top end of the second connecting plate. The bottom ends of the chains are respectively fixed to the outside of the first lifting ring and the second lifting ring.

[0009] Specifically, a first connecting groove is formed on one side of the first clamping ring, a second connecting groove is formed on one side of the second clamping ring, and the first lifting claw and the second lifting claw are clamped together through the first connecting groove and the second connecting groove.

[0010] Specifically, a first through hole is formed through one side of the first connecting plate, a second through hole is formed through one side of the second connecting plate, and the pin shaft sequentially passes through the first through hole and the second through hole.

[0011] Specifically, first reserved holes are formed through both ends of the top of the pin shaft, a second reserved hole is formed through the top of the limit ring, and the insertion rod sequentially passes through the first reserved hole and the second reserved hole.

[0012] Specifically, anti-slip strips are welded equidistantly on one side of the arc-shaped plate.

[0013] The beneficial effects of the present utility model:

[0014] (1) For the round pipe lifting claw of the present utility model, when the first lifting claw and the second lifting claw move downward, the first connecting plate and the second connecting plate move downward due to their own weight, causing the first clamping ring and the second clamping ring to open outward, so that they can be sleeved outside the round pipe. When the lifting equipment pulls the first lifting claw and the second lifting claw through the hook and the chain, the first connecting plate and the second connecting plate are driven to move upward, thereby driving the first clamping ring and the second clamping ring to clamp the round pipe.

[0015] (2) For the round pipe lifting claw of the present utility model, when the first clamping ring and the second clamping ring clamp the round pipe, the arc-shaped plate on the inner side thereof is closely attached to the outside of the round pipe, so that it can firmly clamp the round pipe. Anti-slip strips are welded equidistantly on the inner side of the arc-shaped plate, which can play an anti-slip role and improve the clamping firmness of the round pipe. Description of the drawings

[0016] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2Schematic diagram of the first lifting claw and the second lifting claw of the present utility model;

[0019] Figure 3 Schematic diagram of the movable positioning assembly of the present utility model;

[0020] Figure 4 Schematic diagram of the lifting chain assembly of the present utility model;

[0021] Figure 5 Schematic diagram of the anti-slip assembly of the present utility model;

[0022] In the figure: 1. First lifting claw; 101. First connecting plate; 102. First clamping ring; 103. First lifting ring; 104. First connecting groove; 105. First through hole; 2. Second lifting claw; 201. Second connecting plate; 202. Second clamping ring; 203. Second lifting ring; 204. Second connecting groove; 205. Second through hole; 3. Movable positioning assembly; 301. Pin shaft; 302. Limit ring; 303. Plug pin rod; 304. First reserved hole; 305. Second reserved hole; 4. Lifting chain assembly; 401. Hook; 402. Chain; 5. Anti-slip assembly; 501. Arc plate; 502. Anti-slip strip. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation manners.

[0024] After moving the first lifting claw and the second lifting claw to the outside of the pipeline, they open outward due to their own weight, so that the first clamping ring and the second clamping ring can be sleeved on the outside of the pipeline. When lifting, tighten the first clamping ring and the second clamping ring to clamp on the outside of the pipeline, without manual operation by personnel. As Figures 1-5 shown, the circular pipe lifting claw of the present utility model includes a first lifting claw 1 and a second lifting claw 2. The first lifting claw 1 is composed of a first connecting plate 101 and a first clamping ring 102. The first clamping ring 102 is arranged at the top of the first connecting plate 101. The second lifting claw 2 is composed of a second connecting plate 201 and a second clamping ring 202. An anti-slip assembly 5 is arranged inside the first clamping ring 102 and the second clamping ring 202. The anti-slip assembly 5 includes an arc plate 501 welded to the inside of the first clamping ring 102 and the second clamping ring 202;

[0025] An active positioning component 3 is arranged between the first lifting claw 1 and the second lifting claw 2. The active positioning component 3 includes a pin shaft 301 located between the first lifting claw 1 and the second lifting claw 2. Limiting rings 302 are sleeved at both ends of the pin shaft 301. A pin rod 303 is inserted through the inside of the limiting rings 302. A lifting chain component 4 is arranged at the tops of the first lifting claw 1 and the second lifting claw 2. The lifting chain component 4 includes a hook 401 located at the tops of the first lifting claw 1 and the second lifting claw 2. Chains 402 are arranged at both ends of the bottom of the hook 401.

[0026] During use, the pipe claw formed by the first lifting claw 1 and the second lifting claw 2 is lifted by the lifting chain component 4. The first connecting plate 101 and the second connecting plate 201 move downward due to their own weights, causing the first clamping ring 102 and the second clamping ring 202 to open outward, so that they can be sleeved outside the round pipe. When the lifting equipment pulls the first lifting claw 1 and the second lifting claw 2 through the chains 402, the first clamping ring 102 and the second clamping ring 202 are driven to clamp the round pipe.

[0027] Exemplarily, as Figure 1 、 Figure 2 shown, the present utility model further includes that a first lifting ring 103 is welded to the top end of the first connecting plate 101, a second lifting ring 203 is welded to the top end of the second connecting plate 201, and the bottom ends of the chains 402 are respectively fixed to the outside of the first lifting ring 103 and the second lifting ring 203.

[0028] During use, the lifting equipment pulls the first lifting claw 1 and the second lifting claw 2 through the chains 402 and the first lifting ring 103 and the second lifting ring 203.

[0029] Exemplarily, as Figure 2 shown, the present utility model further includes that a first connecting groove 104 is formed on one side of the first clamping ring 102, a second connecting groove 204 is formed on one side of the second clamping ring 202, and the first lifting claw 1 and the second lifting claw 2 are clamped together through the first connecting groove 104 and the second connecting groove 204.

[0030] During use, the first connecting groove 104 and the second connecting groove 204 enable the first connecting plate 101 and the second connecting plate 201 that are closely attached together to have a certain rotation space.

[0031] Exemplarily, as Figure 1 、 Figure 3 shown, the present utility model further includes that a first through hole 105 is formed through one side of the first connecting plate 101, a second through hole 205 is formed through one side of the second connecting plate 201, and the pin shaft 301 sequentially passes through the first through hole 105 and the second through hole 205.

[0032] During use, the pin shaft 301 passes through the first through hole 105 and the second through hole 205, enabling the first lifting claw 1 and the second lifting claw 2 to rotate.

[0033] Exemplarily, as Figure 3 shown, the present utility model further includes that both ends of the top of the pin shaft 301 are penetrated and provided with first reserved holes 304, the top of the limiting ring 302 is penetrated and provided with a second reserved hole 305, and the pin rod 303 sequentially penetrates through the first reserved hole 304 and the second reserved hole 305.

[0034] During use, the pin rod 303 limits the limiting ring 302 sleeved on both outer ends of the pin shaft 301, and the limiting ring 302 is used to limit the pin shaft 301 penetrating through the first through hole 105 and the second through hole 205.

[0035] Exemplarily, as Figure 5 shown, the present utility model further includes that anti-slip strips 502 are welded equidistantly on one side of the arc-shaped plate 501.

[0036] During use, the anti-slip strips 502 play an anti-slip role.

[0037] When the present utility model is in use, the first lifting claw 1 and the second lifting claw 2 are clamped together through the first connecting groove 104 and the second connecting groove 204. The pin shaft 301 penetrates through the first connecting groove 104 and the first through hole 105. The limiting ring 302 is sleeved on the outer side of the pin shaft 301 from both ends, and the pin rod 303 sequentially penetrates through the second reserved hole 305 and the first reserved hole 304 to limit the pin shaft 301, so that the first lifting claw 1 and the second lifting claw 2 can rotate;

[0038] The external lifting device lifts the lifting claws formed by the first lifting claw 1 and the second lifting claw 2 through the hook 401 and the chain 402, and moves them to the outside of the round tube. When the first lifting claw 1 and the second lifting claw 2 move downward, the first connecting plate 101 and the second connecting plate 201 move downward due to their own weights, so that the first clamping ring 102 and the second clamping ring 202 open outward, so that they can be sleeved on the outside of the round tube. When the lifting device pulls the first lifting claw 1 and the second lifting claw 2 through the hook 401 and the chain 402, it drives the first connecting plate 101 and the second connecting plate 201 to move upward, thereby driving the first clamping ring 102 and the second clamping ring 202 to clamp the round tube;

[0039] When the first clamping ring 102 and the second clamping ring 202 clamp the round tube, the arc-shaped plate 501 inside them is tightly attached to the outside of the round tube, so that the round tube can be firmly clamped. The anti-slip strips 502 are welded equidistantly on the inside of the arc-shaped plate 501, which can play an anti-slip role and improve the clamping firmness of the round tube.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "set", "connected", "fixed", "rotary connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection.

[0042] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. Round tube lifting claw, characterized in that: The invention comprises a first lifting claw (1) and a second lifting claw (2), wherein the first lifting claw (1) is composed of a first connecting plate (101) and a first ring clamp (102), wherein the first ring clamp (102) is arranged at the top end of the first connecting plate (101), and the second lifting claw (2) is composed of a second connecting plate (201) and a second ring clamp (202), and an anti-slip component (5) is arranged on the inner side of the first ring clamp (102) and the second ring clamp (202), and the anti-slip component (5) comprises an arc-shaped plate (501) welded to the inner side of the first ring clamp (102) and the second ring clamp (202); A movable positioning assembly (3) is arranged between the first hanging claw (1) and the second hanging claw (2), and the movable positioning assembly (3) comprises a pin shaft (301) located between the first hanging claw (1) and the second hanging claw (2), and limiting rings (302) are sleeved at both ends of the pin shaft (301), and a latch rod (303) is sleeved through the inside of the limiting ring (302), and a chain assembly (4) is arranged at the top of the first hanging claw (1) and the second hanging claw (2), and the chain assembly (4) comprises a hook (401) located at the top of the first hanging claw (1) and the second hanging claw (2), and chains (402) are arranged at both ends of the bottom of the hook (401).

2. The round tube lifting claw according to claim 1, characterized in that: A first lifting ring (103) is welded to the top of the first connecting plate (101), a second lifting ring (203) is welded to the top of the second connecting plate (201), and the bottom ends of the chains (402) are respectively fixed to the outsides of the first lifting ring (103) and the second lifting ring (203).

3. The round tube lifting claw according to claim 1, characterized in that: A first connecting groove (104) is provided on one side of the first ring clamp (102), and a second connecting groove (204) is provided on one side of the second ring clamp (202); the first hanging claw (1) and the second hanging claw (2) are clamped together through the first connecting groove (104) and the second connecting groove (204).

4. The round tube lifting claw according to claim 1, characterized in that: A first through hole (105) is formed through one side of the first connecting plate (101), a second through hole (205) is formed through one side of the second connecting plate (201), and the pin shaft (301) passes through the first through hole (105) and the second through hole (205) in sequence.

5. The round tube lifting claw according to claim 1, characterized in that: The two ends of the top of the pin shaft (301) are penetrated with a first reserved hole (304), the top of the limiting ring (302) is penetrated with a second reserved hole (305), and the latch rod (303) passes through the first reserved hole (304) and the second reserved hole (305) in sequence.

6. The round tube lifting claw according to claim 1, characterized in that: Anti-slip strips (502) are welded at equal intervals on one side of the arc-shaped plate (501).

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