Clamping mechanism of oil pipe power tongs

Abstract

The utility model provides a clamping mechanism of oil pipe power tongs, and belongs to the technical field of oil pipe power tongs. The clamping mechanism of the oil pipe power tongs comprises the calipers and a clamping groove, the clamping groove is formed in an inner cavity of the calipers and used for containing an oil pipe, the clamping mechanism is installed on the surface of the calipers and used for locking the oil pipe, the clamping mechanism comprises half gears, a clamping block and a first positioning ring, and the half gears are symmetrically and rotationally installed in the inner cavity of the calipers; the clamping block is fixedly installed on the side wall of the half gear, and a rubber block is fixedly installed at one end of the clamping block. By arranging the clamping mechanism, a second gear can be driven to rotate anticlockwise through a motor, a half gear ring can be driven to rotate clockwise through a residual gear ring, and the half gear is driven to drive a plurality of clamping blocks to synchronously rotate clockwise and move towards a clamping groove to clamp an oil pipe; damage of the clamping block to the oil pipe can be avoided, and normal use of the oil pipe is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tubing power clamp technology, and more specifically, to a clamping mechanism for tubing power clamps. Background Technology

[0002] In oilfield development, tubing is a crucial pipeline for transporting oil and gas. Connecting and disconnecting tubing is a common task in downhole operations. Power tubing clamping mechanisms are used for clamping, rotating, and disconnecting tubing, effectively improving operational efficiency and ensuring safety. Especially in oil and gas well development, maintenance, and treatment operations, their main function is to use mechanical force to clamp and rotate tubing or other pipelines, ensuring operational stability and safety under high pressure and high temperature environments. Power tubing clamping mechanisms typically integrate hydraulic, pneumatic, or electric drive systems. Through precise control and force transmission, they ensure stable and efficient clamping force. The hydraulic system controls the opening and closing of the jaws, clamping the tubing within them. When the tubing enters the jaws, the hydraulic system pushes the jaws closed via a cylinder, providing sufficient clamping force to prevent the tubing from slipping or falling out. This not only improves operational efficiency and reduces human intervention but also effectively enhances safety, providing a guarantee for the efficient operation and production of the oil and gas industry.

[0003] Existing tubing power clamps typically use clamping blocks to lock the tubing in place with clamping force. However, after prolonged use, the clamping blocks can easily damage the surface of the tubing, affecting its normal operation. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a clamping mechanism for a power clamp for oil pipes that overcomes or at least partially solves the above technical problems.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a clamping mechanism for a power wrench for oil pipes, including a wrench and a slot. The slot is formed in the inner cavity of the wrench for placing an oil pipe. A clamping mechanism is mounted on the surface of the wrench for locking the oil pipe. The clamping mechanism includes:

[0007] A half-gear, which is symmetrically rotatably mounted inside the caliper cavity;

[0008] A clamping block is fixedly installed on the side wall of the half gear, and a rubber block is fixedly installed on one end of the clamping block;

[0009] The first positioning ring is symmetrically fixedly installed in the inner cavity of the caliper. A half-tooth ring is rotatably installed in the two first positioning rings, and the half-tooth ring meshes with a half-gear.

[0010] In a preferred embodiment, a second positioning ring is symmetrically fixedly installed inside the caliper cavity, and a guide rod is fixedly installed on the surface of the second positioning ring for guiding the oil pipe.

[0011] In a preferred embodiment, a residual tooth ring is fixedly mounted on the sidewall of the half-tooth ring for driving the half-tooth ring to rotate.

[0012] In a preferred embodiment, a second gear is rotatably mounted inside the caliper cavity. The second gear meshes with the residual tooth ring and is used to drive the residual tooth ring to rotate.

[0013] In a preferred embodiment, a motor is fixedly mounted on the surface of the caliper, and the output end of the motor is fixedly connected to the second gear for driving the second gear to rotate.

[0014] In a preferred embodiment, the caliper cavity is equipped with a positioning mechanism for positioning the second gear. The positioning mechanism includes a positioning block and a tooth groove. The positioning block is slidably installed in the caliper cavity, and the side wall of the positioning block has a tooth groove that is adapted to the second gear for positioning the second gear.

[0015] In a preferred embodiment, a slider is fixedly installed at the bottom of the positioning block, and a groove is formed on the surface of the caliper, with the slider slidably connected to the groove.

[0016] In a preferred embodiment, a fixing plate is fixedly installed inside the caliper cavity, and an electric telescopic rod is fixedly installed on the side wall of the fixing plate. The telescopic end of the electric telescopic rod is fixedly connected to the positioning block.

[0017] The clamping mechanism of the oil pipe power clamp provided by this utility model has the following advantages:

[0018] 1. By setting up a clamping mechanism, the motor can drive the second gear to rotate counterclockwise, which in turn drives the half gear to rotate clockwise. This half gear drives several clamping blocks to rotate clockwise synchronously and move into the clamping slot to clamp the oil pipe. By setting rubber blocks, damage to the oil pipe by the clamping blocks can be avoided, ensuring the normal use of the oil pipe.

[0019] 2. By setting up a positioning mechanism, when the oil pipe is clamped and fixed by the clamping block, the tooth groove of the positioning block can be driven by the electric telescopic rod to mesh with the second gear, thereby positioning the second gear and preventing the second gear from rotating during the clamping process, ensuring the stability of the disassembly process. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view provided by an embodiment of the present utility model;

[0022] Figure 2 A schematic diagram of the front cross-sectional structure provided for an embodiment of this utility model;

[0023] Figure 3 A perspective view of the semi-gear ring provided for an embodiment of this utility model;

[0024] Figure 4 A cross-sectional view of the caliper provided for an embodiment of this utility model.

[0025] In the diagram: 1. Caliper; 2. Slot; 3. Clamping mechanism; 301. Half gear; 302. Clamping block; 303. Rubber block; 304. First positioning ring; 305. Second positioning ring; 306. Guide rod; 307. Half gear ring; 308. Residual gear ring; 309. Second gear; 310. Motor; 4. Positioning mechanism; 401. Positioning block; 402. Slider; 403. Slide groove; 404. Fixing plate; 405. Electric telescopic rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Reference Figure 1-4This utility model provides a technical solution: a clamping mechanism for a power wrench for oil pipes, including a wrench 1 and a groove 2. The groove 2 is formed in the inner cavity of the wrench 1 for placing the oil pipe. A clamping mechanism 3 is installed on the surface of the wrench 1 for locking the oil pipe. The clamping mechanism 3 includes a half gear 301, a clamping block 302 and a first positioning ring 304. The half gear 301 is symmetrically rotated and installed in the inner cavity of the wrench 1. The clamping block 302 is fixedly installed on the side wall of the half gear 301. A rubber block 303 is fixedly installed at one end of the clamping block 302 to prevent the clamping block 302 from damaging the oil pipe. The first positioning ring 304 is symmetrically fixedly installed in the inner cavity of the wrench 1. A second positioning ring 305 is symmetrically fixedly installed in the inner cavity of the wrench 1. A guide rod 306 is fixedly installed on the surface of the second positioning ring 305 for guiding the oil pipe.

[0028] Reference Figure 1-3 In a preferred embodiment, a half-gear ring 307 is rotatably mounted in one of the two first positioning rings 304. The half-gear ring 307 meshes with a half-gear 301. A residual gear ring 308 is fixedly mounted on the side wall of the half-gear ring 307 for driving the half-gear ring 307 to rotate. A second gear 309 is rotatably mounted in the inner cavity of the caliper 1. The second gear 309 meshes with the residual gear ring 308 for driving the residual gear ring 308 to rotate. A motor 310 is fixedly mounted on the surface of the caliper 1. The output end of the motor 310 is fixedly connected to the second gear 309 for driving the second gear 309 to rotate. The motor 310 can drive the second gear 309 to rotate counterclockwise. The residual gear ring 308 can drive the half-gear ring 307 to rotate clockwise, and drive the half-gear 301 to drive several clamping blocks 302 to rotate clockwise synchronously and move into the clamping groove 2 to clamp the oil pipe.

[0029] In a preferred embodiment, during use, the oil pipe to be disassembled is inserted into the slot 2 along the guide rod 306. The motor 310 drives the second gear 309 to rotate counterclockwise, which in turn drives the half gear ring 307 to rotate clockwise. This drives the half gear 301 to drive several clamping blocks 302 to rotate clockwise synchronously and move into the slot 2 to clamp the oil pipe. By setting the rubber block 303, damage to the oil pipe by the clamping block 302 can be avoided, ensuring the normal use of the oil pipe.

[0030] Reference Figure 1-4 In a preferred embodiment, a positioning mechanism 4 is installed in the inner cavity of the caliper 1 for positioning the second gear 309. The positioning mechanism 4 includes a positioning block 401 and a tooth groove. The positioning block 401 is slidably installed in the inner cavity of the caliper 1. The side wall of the positioning block 401 is provided with a tooth groove, which is adapted to the second gear 309 for positioning the second gear 309. When the oil pipe is clamped and fixed by the clamping block 302, the positioning block 401 can position the second gear 309 to prevent the second gear 309 from rotating during the clamping process and ensure the stable progress of the disassembly process.

[0031] Reference Figure 1-4 In a preferred embodiment, a slider 402 is fixedly installed at the bottom of the positioning block 401, and a groove 403 is provided on the surface of the caliper 1. The slider 402 is slidably connected to the groove 403. A fixing plate 404 is fixedly installed in the inner cavity of the caliper 1, and an electric telescopic rod 405 is fixedly installed on the side wall of the fixing plate 404. The telescopic end of the electric telescopic rod 405 is fixedly connected to the positioning block 401 and is used to drive the tooth groove of the positioning block 401 to mesh with the second gear 309, thereby positioning the second gear 309.

[0032] In a preferred embodiment, when the oil pipe is clamped and fixed by the clamping block 302, the tooth groove of the positioning block 401 can be driven by the electric telescopic rod 405 to mesh with the second gear 309, thereby positioning the second gear 309, preventing the second gear 309 from rotating during the clamping process, and ensuring the stable progress of the disassembly process.

[0033] Specifically, the working principle of the clamping mechanism of this oil pipe power clamp is as follows: When in use, the oil pipe to be disassembled is inserted into the slot 2 along the guide rod 306. The motor 310 drives the second gear 309 to rotate counterclockwise, which in turn drives the half gear ring 307 to rotate clockwise through the residual gear ring 308. This drives the half gear 301 to drive several clamping blocks 302 to rotate clockwise synchronously and move into the slot 2 to clamp the oil pipe. By setting the rubber block 303, damage to the oil pipe caused by the clamping block 302 can be avoided, ensuring the normal use of the oil pipe.

[0034] When the oil pipe is clamped and fixed by the clamping block 302, the tooth groove of the positioning block 401 can be driven by the electric telescopic rod 405 to mesh with the second gear 309, thereby positioning the second gear 309 and preventing the second gear 309 from rotating during the clamping process, thus ensuring the stable progress of the disassembly process.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping mechanism for a power wrench for oil pipes, comprising a clamp (1) and a groove (2), wherein the groove (2) is formed in the inner cavity of the clamp (1) for placing an oil pipe, characterized in that, The caliper (1) is equipped with a clamping mechanism (3) for locking the oil pipe. The clamping mechanism (3) includes: A half gear (301) is symmetrically rotatably mounted in the inner cavity of the caliper (1); A clamping block (302) is fixedly installed on the side wall of the half gear (301), and a rubber block (303) is fixedly installed at one end of the clamping block (302). The first positioning ring (304) is symmetrically fixedly installed in the inner cavity of the caliper (1). A half gear ring (307) is rotatably installed in the two first positioning rings (304), and the half gear ring (307) meshes with the half gear (301).

2. The clamping mechanism of the oil pipe power clamp according to claim 1, characterized in that, The caliper (1) has a second positioning ring (305) symmetrically fixedly installed inside its cavity. A guide rod (306) is fixedly installed on the surface of the second positioning ring (305) for guiding the oil pipe.

3. The clamping mechanism of the oil pipe power clamp according to claim 1, characterized in that, A residual tooth ring (308) is fixedly installed on the side wall of the half tooth ring (307) for driving the half tooth ring (307) to rotate.

4. The clamping mechanism of the tubing power clamp according to claim 3, characterized in that, The caliper (1) has a second gear (309) rotatably mounted inside its cavity. The second gear (309) meshes with the residual tooth ring (308) and is used to drive the residual tooth ring (308) to rotate.

5. The clamping mechanism of the oil pipe power clamp according to claim 4, characterized in that, A motor (310) is fixedly mounted on the surface of the caliper (1). The output end of the motor (310) is fixedly connected to the second gear (309) to drive the second gear (309) to rotate.

6. The clamping mechanism of the tubing power clamp according to claim 4, characterized in that, The caliper (1) is equipped with a positioning mechanism (4) for positioning the second gear (309). The positioning mechanism (4) includes a positioning block (401) and a tooth groove. The positioning block (401) is slidably installed in the inner cavity of the caliper (1). The side wall of the positioning block (401) is provided with a tooth groove, which is adapted to the second gear (309) for positioning the second gear (309).

7. The clamping mechanism of a tubing power clamp according to claim 6, characterized in that, The bottom of the positioning block (401) is fixedly installed with a slider (402), and the surface of the caliper (1) is provided with a sliding groove (403). The slider (402) is slidably connected to the sliding groove (403).

8. The clamping mechanism of the oil pipe power clamp according to claim 7, characterized in that, A fixing plate (404) is fixedly installed in the inner cavity of the caliper (1), and an electric telescopic rod (405) is fixedly installed on the side wall of the fixing plate (404). The telescopic end of the electric telescopic rod (405) is fixedly connected to the positioning block (401).

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