Opening and closing grab bucket for pipeline heating operation

Abstract

The utility model belongs to the field of opening and closing grab buckets, and particularly relates to an opening and closing grab bucket for pipeline heating operation, which comprises a first clamping jaw and a second clamping jaw, and support shafts are mounted in inner cavities of the first clamping jaw and the second clamping jaw; by arranging the closing mechanism, firstly, the first clamping jaw and the second clamping jaw are placed on the surface of a pipeline, then the handle can be held to rotate, the cam plate is driven to rotate through rotation of the handle, and at the moment, the cam plate can rotate around the surface of the connecting shaft; in the rotating process of the cam plate, the surface of the roller pin is clamped into the groove of the inner cavity of the cam plate, so that the first clamping jaw and the second clamping jaw can be tightly attached together, the purpose of rapidly clamping on the surface of a pipeline is achieved, and the problems that traditional heating equipment mostly adopts a fixed supporting or manual installation mode, and the installation efficiency is high are solved. The problems of low mounting efficiency, poor stability, high labor intensity and the like exist, and potential safety hazards are easily generated by manual operation.

Description

An opening and closing grab bucket for pipeline heating operations Technical Field

[0001] This utility model relates to the field of opening and closing grabs, specifically an opening and closing grab for pipeline heating operations. Background Technology

[0002] In the construction of long-distance pipelines such as oil and gas pipelines, weld joint heating is a crucial step. The heating operation requires the heating equipment to be able to be quickly and stably fixed on the pipeline surface, and to ensure uniform and reliable heating.

[0003] In the use of existing traditional heating equipment, the choice is usually to use fixed support heating equipment or manual installation. Fixed support heating equipment is less efficient during installation and is not convenient to move and transport. Manual installation may result in poor stability after installation, and the labor intensity of manual installation is high, which can easily lead to safety hazards during manual operation. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, traditional heating equipment often adopts fixed support or manual installation methods, which have problems such as low installation efficiency, poor stability, and high labor intensity. In addition, manual operation is prone to safety hazards. This utility model proposes an opening and closing grab bucket for pipeline heating operations.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an opening and closing grab for pipeline heating operation, including a first clamping claw and a second clamping claw, a support shaft is installed in the inner cavity of the first clamping claw and the second clamping claw, a cable plug is installed on the top of the second clamping claw, and a closing mechanism is installed on the front side of the first clamping claw and the second clamping claw.

[0006] The closing mechanism includes a roller pin and a connecting shaft. The back side of the roller pin is fixedly connected to the front side of the first clamping claw, and the back side of the connecting shaft is fixedly connected to the front side of the second clamping claw. A handle is rotatably connected to the surface of the connecting shaft, and a cam plate is fixedly connected to the left side of the handle. The inner cavity of the cam plate is engaged with the surface of the roller pin.

[0007] Preferably, a positioning seat is fixedly installed on the front side of the second gripper, a fixing rod is fixedly connected to the bottom of the handle cavity, a connecting wheel is fixedly connected to the surface of the fixing rod, and one side of the connecting wheel is engaged with the surface of the positioning seat.

[0008] Preferably, an anti-slip sleeve made of silicone is fixedly attached to the surface of the handle.

[0009] Preferably, the inner cavities of the first and second gripping claws are each equipped with a connecting seat, a heating cable is installed on the top of the connecting seat, one end of the heating cable is installed at the bottom of the cable plug, a wedge is installed on the right side of one of the connecting seats, and a wedge plate is installed on the left side of the other connecting seat, with the surface of the wedge and the inner side of the wedge plate in contact.

[0010] Preferably, a fixed base is fixedly installed on the front and back sides of both the first and second gripping claws. A handle is rotatably connected to one side of the fixed base, and a lead screw is fixedly connected to one side of the handle. A movable plate is threaded onto the surface of the lead screw, and a caster is rotatably connected to the inner cavity of the movable plate.

[0011] Preferably, a connecting plate is fixedly connected to both the front and back sides of the movable plate surface, and a limiting plate is fixedly connected to the inner cavity of the fixed seat, with one side of the connecting plate in contact with the surface of the limiting plate.

[0012] Preferably, a guide rod is slidably connected to the inner cavity of the connecting plate, one end of the guide rod is fixedly connected to the inner cavity of the fixed seat, and the other end of the guide rod is fixedly connected to the surface of the limiting plate.

[0013] The advantages of this utility model are:

[0014] This invention, through the setting of a closing mechanism, firstly places the first and second clamping claws on the surface of the pipe, then holds the handle and rotates it. The rotation of the handle drives the cam plate to rotate, and the cam plate rotates around the surface of the connecting shaft. During the rotation of the cam plate, the surface of the roller pin engages with the groove in the inner cavity of the cam plate, thus tightly fitting the first and second clamping claws together, achieving the purpose of quickly clamping them onto the surface of the pipe. This solves the problems of low installation efficiency, poor stability, high labor intensity, and safety hazards that arise from the traditional heating equipment that mostly uses fixed support or manual installation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a cross-sectional view of the first clamping claw and the second clamping claw of this utility model;

[0018] Figure 3 is a structural schematic diagram of the connector of this utility model;

[0019] Figure 4 is a partial connection diagram of the handle of this utility model;

[0020] Figure 5 is a cross-sectional view of the fixing base of this utility model.

[0021] In the diagram: 1. First gripper; 2. Second gripper; 3. Closing mechanism; 301. Handle; 302. Roller pin; 303. Cam plate; 304. Positioning seat; 305. Connecting shaft; 306. Anti-slip sleeve; 307. Connecting wheel; 308. Fixing rod; 4. Fixing seat; 5. Cable plug; 6. Support shaft; 7. Lead screw; 8. Connecting seat; 9. Heating cable; 10. Wedge block; 11. Wedge plate; 12. Connecting plate; 13. Handle; 14. Moving plate; 15. Guide rod; 16. Caster; 17. Limiting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] The present application will be further described in detail below with reference to Figures 1-5.

[0024] This application discloses an opening and closing grab for pipeline heating operations. Referring to FIG1, an opening and closing grab for pipeline heating operations includes a first clamping claw 1 and a second clamping claw 2. The inner cavities of the first clamping claw 1 and the second clamping claw 2 are both equipped with support shafts 6. A cable plug 5 is installed on the top of the second clamping claw 2. A closing mechanism 3 is installed on the front side of both the first clamping claw 1 and the second clamping claw 2.

[0025] The closing mechanism 3 includes a roller pin 302 and a connecting shaft 305. The back side of the roller pin 302 is fixedly connected to the front side of the first gripping claw 1, and the back side of the connecting shaft 305 is fixedly connected to the front side of the second gripping claw 2. Both the roller pin 302 and the connecting shaft 305 are made of rubber, which can provide friction for the rotation of the handle 301, thus fixing the handle 301 in place and preventing it from retracting. It also increases the friction of the roller pin 302 sliding inside the cam plate 303, thereby enhancing the fixing effect of the cam plate 303 after it is in place. The handle 301 is rotatably connected to the surface of the connecting shaft 305, and the cam plate 303 is fixedly connected to the left side of the handle 301. The inner cavity of the cam plate 303 engages with the surface of the roller pin 302. The inner cavity of the cam plate 303 is provided with an arc-shaped groove, the diameter of which matches the diameter of the roller pin 302. The cam plate 303 is used in conjunction with the roller pin 302 through the arc-shaped groove. After the operator places the first clamping claw 1 and the second clamping claw 2 on the surface of the pipe, he only needs to hold the handle 301 and turn it to the left. The rotation of the handle 301 drives the cam plate 303 to rotate. At this time, the cam plate 303 will rotate around the surface of the connecting shaft 305. During the rotation of the cam plate 303, the surface of the roller pin 302 can be engaged into the arc-shaped groove in the inner cavity of the cam plate 303, so that the inner sides of the first clamping claw 1 and the second clamping claw 2 are tightly fitted together, so that the first clamping claw 1 and the second clamping claw 2 are tightly clamped on the surface of the pipe, thus achieving the purpose of quickly clamping on the surface of the pipe.

[0026] Referring to Figures 1 and 4, a positioning seat 304 is fixedly installed on the front side of the second gripper 2. An arc-shaped groove is provided on the right side of the positioning seat 304, which matches the shape of the connecting wheel 307. A fixing rod 308 is fixedly connected to the bottom of the inner cavity of the handle 301. The connecting wheel 307 is fixedly connected to the surface of the fixing rod 308. One side of the connecting wheel 307 is engaged with the surface of the positioning seat 304. By setting the positioning seat 304, when the handle 301 is not in use, the connecting wheel 307 can be engaged in the arc-shaped groove on the right side of the positioning seat 304. By fixing the position of the connecting wheel 307 by the positioning seat 304, the handle 301 can be prevented from wobbling left and right when not in use, making it easy to store the handle 301.

[0027] Referring to Figure 4, an anti-slip sleeve 306 is fixedly connected to the surface of the handle 301. The anti-slip sleeve 306 has anti-slip grooves inside, and the anti-slip grooves are arranged in multiple rows and columns on the surface of the anti-slip sleeve 306. The anti-slip sleeve 306 is made of silicone. By setting the anti-slip sleeve 306, the contact area between the operator's hand and the handle 301 can be increased, thereby improving the stability when rotating the handle 301 and preventing the hand from slipping when rotating the handle 301, which would affect the normal closing of the first gripper 1 and the second gripper 2.

[0028] Referring to Figures 2 and 3, connecting seats 8 are installed in the inner cavities of the first clamping claw 1 and the second clamping claw 2. Ten heating cables 9 are installed on the top of the connecting seats 8. The heating cables 9 are mainly used for heating the surface of the pipe. One end of each heating cable 9 is installed at the bottom of the cable plug 5. A wedge 10 is installed on the right side of one connecting seat 8, and a wedge plate 11 is installed on the left side of the other connecting seat 8. The surface of the wedge 10 and the inner side of the wedge plate 11 are in contact. There are a total of ten sets of wedges 10 and wedge plates 11. Both the wedges 10 and wedge plates 11 are made of copper. The gap on the side is smaller than the thickness of the wedge 10, so that the contact between the wedge 10 and the wedge plate 11 can be more stable under the elastic force of the wedge plate 11 itself. With the setting of the heating cable 9, the surface of the pipe can be heated when the circuit is connected. With the setting of the connecting seat 8, the positions of the wedge 10 and the wedge plate 11 are supported respectively. After the first clamping claw 1 and the second clamping claw 2 are closed, the surface of the wedge 10 will be attached to the inner side of the wedge plate 11, so that the heating cable 9 can be re-circulated. With the setting of the connecting seat 8, the heating cable 9 can be disconnected and connected.

[0029] Referring to Figures 1 and 5, a fixed base 4 is fixedly installed on the front and back sides of the first clamping claw 1 and the second clamping claw 2. A handle 13 is rotatably connected to one side of the fixed base 4. The surface of the handle 13 has anti-slip grooves to improve the stability of the operator during rotation. A lead screw 7 is fixedly connected to one side of the handle 13. The lead screw 7 is rotatably connected to the inside of the fixed base 4. A movable plate 14 is threadedly connected to the surface of the lead screw 7. A caster 16 is rotatably connected to the inner cavity of the movable plate 14. One side of the caster 16 is in contact with the surface of the pipe. By setting the handle 13, the lead screw 7 can be driven to rotate. The rotation of the lead screw 7 can drive the movable plate 14 to move downward on its surface. The movement of the movable plate 14 drives the caster 16 to move. The position of the caster 16 can be adjusted according to the diameter of the pipe, so that the caster 16 is supported on the surface of the pipe, thereby reducing the friction between the caster and the pipe and achieving a smooth opening and closing effect.

[0030] Referring to Figure 5, connecting plates 12 are fixedly connected to both the front and back sides of the surface of the movable plate 14. The surface of the connecting plate 12 is slidably connected to the inner cavity of the fixed base 4. A limiting plate 17 is fixedly connected to the inner cavity of the fixed base 4. One side of the connecting plate 12 is in contact with the surface of the limiting plate 17. The distance between the connecting plate 12 and the limiting plate 17 is less than the length of the lead screw 7. By setting the limiting plate 17, the position of the connecting plate 12 is limited, preventing the connecting plate 12 from moving too far, which would cause the movable plate 14 to detach from the surface of the lead screw 7, thereby affecting the subsequent normal reset of the movable plate 14.

[0031] Referring to Figure 5, a guide rod 15 is slidably connected to the inner cavity of the connecting plate 12. One end of the guide rod 15 is fixedly connected to the inner cavity of the fixed seat 4, and the other end of the guide rod 15 is fixedly connected to the surface of the limiting plate 17. The guide rod 15 guides the movement of the connecting plate 12, keeping the connecting plate 12 on the same horizontal line during movement, preventing the position of the connecting plate 12 from shifting during movement, which would cause the caster 16 to be unable to stably adhere to the surface of the pipe, affecting the clamping effect on the pipe.

[0032] Working principle: The operator first places the first clamping jaw 1 and the second clamping jaw 2 on the surface of the pipe. After the first clamping jaw 1 and the second clamping jaw 2 are placed, the operator rotates the anti-slip sleeve 306 to the left. The rotation of the anti-slip sleeve 306 drives the handle 301 to rotate. The anti-slip sleeve 306 increases the friction between the operator's hand and the handle 301, preventing the hand from slipping during rotation. The rotation of the handle 301 drives the cam plate 303 to rotate. At this time, the cam... The plate 303 rotates around the surface of the connecting shaft 305. The connecting shaft 305 restricts the rotational position of the cam plate 303, preventing deviations that could prevent the roller pin 302 from properly engaging with the interior of the cam plate 303. During the rotation of the cam plate 303, the surface of the roller pin 302 engages with the arc-shaped groove inside the cam plate 303, thereby closing the first clamping claw 1 and the second clamping claw 2 together, tightly clamping them onto the surface of the pipe. This allows for the rapid clamping of the first clamping claw 1 and the second clamping claw 2 onto the pipe surface, avoiding the problems of low installation efficiency, poor stability, and high labor intensity caused by the fixed support or manual installation methods of traditional heating equipment. Furthermore, manual operation is prone to safety hazards. After the first clamping claw 1 and the second clamping claw 2 are closed, the surface of the wedge block 10 and the inner side of the wedge plate 11 will fit together, thus reconnecting the circuit of the heating cable 9. This allows connection to the cable plug 5 via the heating system, completing the heating operation on the pipe surface. Simultaneously, during the placement of the first clamping claw 1 and the second clamping claw 2, the operator can rotate the handle 13. The rotation of the handle 13 drives the screw 7 to rotate, which in turn moves the moving plate 14. The movement of the moving plate 14 moves the casters 16, adjusting their position and ensuring they support the pipe. This assists in the opening and closing action, reduces friction with the pipe, and achieves smooth opening and closing.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An opening and closing grab for pipeline heating operations, comprising a first clamping claw (1) and a second clamping claw (2), characterized in that: The inner cavities of the first clamping claw (1) and the second clamping claw (2) are both equipped with support shafts (6), and the top of the second clamping claw (2) is equipped with a cable plug (5). The front sides of the first clamping claw (1) and the second clamping claw (2) are both equipped with closing mechanisms (3). The closing mechanism (3) includes a roller pin (302) and a connecting shaft (305). The back side of the roller pin (302) is fixedly connected to the front side of the first clamping claw (1), and the back side of the connecting shaft (305) is fixedly connected to the front side of the second clamping claw (2). The surface of the connecting shaft (305) is rotatably connected to a handle (301). The left side of the handle (301) is fixedly connected to a cam plate (303), and the inner cavity of the cam plate (303) is engaged with the surface of the roller pin (302).

2. The opening and closing grab bucket for pipeline heating operations according to claim 1, characterized in that: A positioning seat (304) is fixedly installed on the front side of the second clamping claw (2), and a fixing rod (308) is fixedly connected to the bottom of the inner cavity of the handle (301). A connecting wheel (307) is fixedly connected to the surface of the fixing rod (308), and one side of the connecting wheel (307) is engaged with the surface of the positioning seat (304).

3. The opening and closing grab bucket for pipeline heating operations according to claim 1, characterized in that: An anti-slip sleeve (306) is fixedly connected to the surface of the handle (301), and the anti-slip sleeve (306) is made of silicone.

4. The opening and closing grab bucket for pipeline heating operations according to claim 1, characterized in that: The inner cavities of the first clamping claw (1) and the second clamping claw (2) are each equipped with a connecting seat (8). A heating cable (9) is installed on the top of the connecting seat (8). One end of the heating cable (9) is installed at the bottom of the cable plug (5). A wedge (10) is installed on the right side of one of the connecting seats (8), and a wedge plate (11) is installed on the left side of the other connecting seat (8). The surface of the wedge (10) and the inner side of the wedge plate (11) are in contact.

5. The opening and closing grab bucket for pipeline heating operations according to claim 1, characterized in that: The first clamping claw (1) and the second clamping claw (2) are both fixedly mounted with a fixed base (4) on their front and back sides. A handle (13) is rotatably connected to one side of the fixed base (4). A lead screw (7) is fixedly connected to one side of the handle (13). A movable plate (14) is threadedly connected to the surface of the lead screw (7). A caster (16) is rotatably connected to the inner cavity of the movable plate (14).

6. The opening and closing grab bucket for pipeline heating operations according to claim 5, characterized in that: The front and back sides of the movable plate (14) are fixedly connected to a connecting plate (12), and the inner cavity of the fixed seat (4) is fixedly connected to a limiting plate (17). One side of the connecting plate (12) is in contact with the surface of the limiting plate (17).

7. The opening and closing grab bucket for pipeline heating operations according to claim 6, characterized in that: The inner cavity of the connecting plate (12) is slidably connected to a guide rod (15). One end of the guide rod (15) is fixedly connected to the inner cavity of the fixed seat (4), and the other end of the guide rod (15) is fixedly connected to the surface of the limiting plate (17).

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