A GIS pipeline double clamping mechanism

Abstract

The present invention discloses a GIS pipeline double clamping mechanism, which relates to the field of pipeline clamping mechanisms. In the traditional lifting and docking of GIS pipelines, ropes are mostly used as lifting tools, with poor controllability. There is also a hydraulic single clamping mechanism, which has a large number of pipelines and is prone to interference with the entire mechanism. Moreover, when the single clamping mechanism lifts a long pipeline, the entire pipeline cannot be kept in a horizontal state. The present invention includes a frame, a lifting drive device, a sliding lifting mechanism and two sets of clamps. The sliding lifting mechanism includes a lifting block, a left sliding connection seat and a right sliding connection seat. When the lifting block moves up and down, the left sliding connection seat and the right sliding connection seat move obliquely relative to the lifting block along the waist-shaped guide rail, causing the left sliding connection seat and the right sliding connection seat to approach or separate, thereby driving the clamps to clamp or release the clamped pipeline. A self-locking phenomenon will occur between the left sliding connection seat, the right sliding connection seat and the lifting block when clamping the pipeline. The use of double clamps to clamp the pipeline can firmly hold the pipeline stably and reliably.

Description

Technical Field

[0001] The present invention relates to the field of pipe clamping mechanisms, and particularly to a double pipe clamping mechanism for GIS pipes. Background Art

[0002] In traditional lifting and docking of GIS pipes, ropes are mostly used as lifting tools. Since ropes are flexible objects, they do not have precise controllability as lifting tools. There are also motor-driven single pipe clamps on the market, but the clamping force of the pipe clamps is not large, and the pipe clamps are easily forced to open when the load is too large, resulting in the failure of the pipe clamps. There are also hydraulic single pipe clamps on the market. The hydraulic pipe clamps have a large clamping force and can effectively clamp, but the hydraulic pipe clamp pipelines are relatively numerous, which is likely to cause interference to the entire mechanism. Moreover, when lifting a long pipe with a single pipe clamp, the entire pipe cannot be kept horizontal and will show a skew phenomenon. Summary of the Invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and refine the existing technical solutions, and provide a double pipe clamping mechanism for GIS pipes, aiming to achieve stable, reliable and firm clamping of the pipes. To this end, the present invention adopts the following technical solutions.

[0004] A double-clamping mechanism for GIS pipelines, comprising a frame, a lifting drive device, a sliding lifting mechanism and two sets of clamps. The sliding lifting mechanism includes a lifting block, a left sliding connection seat and a right sliding connection seat. The two sets of clamps are symmetrically arranged left and right, front and back. Each set of clamps includes a left claw and a right claw. The left claw is connected to the lower part of the left sliding connection seat, and the right claw is connected to the lower part of the right sliding connection seat. The lifting drive device is connected to the lifting block to drive the lifting of the lifting block. The left sliding connection seat and the right sliding connection seat are arranged under the machine base, and a sliding guiding mechanism for horizontal relative movement is provided between the left sliding connection seat and the right sliding connection seat and the machine base, so that the clamps can make horizontal relative movement when clamping or releasing the clamped pipeline. The lifting block is an inverted isosceles trapezoidal block, and two waists of the isosceles trapezoidal block are provided with waist guide rails in the same direction as the waist line. The left sliding connection seat and the right sliding connection seat are provided with chutes that slide and match with the waist guide rails of the lifting block. When the lifting block rises and falls, the left sliding connection seat and the right sliding connection seat move obliquely relative to the lifting block along the waist guide rails, so that the left sliding connection seat and the right sliding connection seat approach or separate, and then drive the clamps to clamp or release the clamped pipeline. When clamping the pipeline, the lifting drive device drives the lifting block to descend. At this time, the left sliding connection seat and the right sliding connection seat rise obliquely relative to each other along the waist guide rails of the lifting block. Due to the sliding guiding mechanism for horizontal relative movement with the machine base, the left sliding connection seat and the right sliding connection seat move in opposite directions along the sliding guiding mechanism while keeping the height unchanged, opening the clamps. When the robotic arm of the equipment moves to align the clamps with the pipeline and descends to the clamping position, the lifting drive device drives the lifting block to rise again, driving the left sliding connection seat and the right sliding connection seat to move towards each other, so that the clamps clamp the pipeline. Since the left sliding connection seat and the right sliding connection seat slide obliquely along the trapezoidal lifting block, when tightened, under the action of gravity, a self-locking phenomenon will occur between the left sliding connection seat and the right sliding connection seat and the lifting block. At the same time, the double-clamps are used to clamp the pipeline. Compared with the traditional pipe-clamping mechanism, it has higher stability, reliability, precise controllability and safety, and can firmly clamp the pipeline stably and reliably.

[0005] As a preferred technical measure: The lifting drive device includes a high-inertia servo motor and a worm and worm gear reducer connected to the servo motor. The worm and worm gear reducer is connected to the lifting block. The lifting drive device is provided with upper and lower limit sensors for limiting the lifting distance of the lifting block. Using a high-inertia servo motor and a worm and worm gear reducer, the clamping force is large, the control is precise and controllable, and it has better self-locking performance. The setting of the upper and lower limit sensors makes the lifting range automatically controllable.

[0006] As a preferred technical means: The frame includes a frame platform and a connecting frame. The lifting drive device is arranged on the upper surface of the frame platform. The output shaft of the worm of the worm and worm gear reducer passes through the frame platform and is then connected to the lifting block through a connecting disk. There are 2 connecting frames, which are symmetrically arranged in parallel under the frame platform. The 2 connecting frames are respectively connected to the left sliding connection seat and the right sliding connection seat through a sliding guiding mechanism. It effectively realizes the connection between the lifting block and the lifting drive device, and realizes the connection between the frame and the sliding lifting mechanism.

[0007] As a preferred technical means: The sliding guiding mechanism includes linear guide rails and 4 horizontal sliders matching therewith. There are 2 linear guide rails in total, which are respectively arranged on the opposite sides of the 2 connecting frames. The horizontal sliders are arranged on the front and rear sides of the upper parts of the left sliding connection seat and the right sliding connection seat. It effectively realizes the sliding connection structure between the frame and the sliding lifting mechanism.

[0008] As a preferred technical means: Each connecting frame includes a flat plate, a vertical plate and a plurality of reinforcing rib plates. The vertical plate is arranged under the flat plate and is arranged at a right angle to the flat plate. The linear guide rail is connected to the inner sides of the vertical plates of the 2 connecting frames. The reinforcing rib plates are arranged at equal intervals in the left-right direction and are connected to the lower end surface of the horizontal plate and the outer side surface of the vertical plate. The connecting frame is made by connecting sheet materials, which saves materials and is convenient for processing. And through the reinforcing rib plates, the structural strength can be effectively guaranteed.

[0009] As a preferred technical means: The waist guide rail of the lifting block adopts a T-shaped or dovetail-shaped rail structure. Except for the sliding direction, the T-shaped or dovetail-shaped rail has an anti-separation function. Compared with the rectangular chute block structure, it can reduce the number of parts and the complexity of the structure.

[0010] As a preferred technical means: The left claw includes a mounting seat, a claw body, a plurality of buffer pads, a plurality of springs and a plurality of pressure sensors. The claw body adopts a hollow structure. The claw body is connected to the mounting seat. The mounting seat is fixedly connected to the left sliding connection seat. The spring is arranged in the claw body. One side of the claw body for clamping the pipeline is the clamping side. One end of the spring facing the clamping side is connected to the buffer pad. The pressure sensor passes through the buffer pad, and the pressure sensing surface of the pressure sensor faces the pipeline to be clamped. The right claw has the same structure as the left claw. The clamping sides of the left claw and the right claw are arc-shaped. The claw adopts a hollow structure, which can greatly reduce the weight on the premise of effectively guaranteeing the structural strength. The buffer pad supported by the spring can realize elastic clamping during clamping. The pressure sensor can conveniently sense the clamping force. Through the feedback of force, the control of the clamping force can be realized. The overall structure has high strength, the claw will not deform during clamping, the weight is light, the energy consumption is small, the elastic clamping and the controllable force feedback make the claw not easy to damage the pipeline, and the arc-shaped clamping side is more suitable for clamping the pipeline.

[0011] As a preferred technical means: at the upper left end of the left sliding connection seat, there is a fixing plate for 2 horizontal sliders; at the lower end of the left sliding connection seat, there is a clamping connection seat plate in the front-back direction; on the upper surface of the clamping connection seat plate, there are reinforcing rib plates on the left and right sides, and the reinforcing rib plates connect the upper end surface of the clamping connection seat plate and the lower side surface of the left sliding connection seat. The right sliding connection seat has the same structure as the left sliding connection seat. For this structure of the sliding connection seat, relatively less material is used, but the structural strength can be effectively guaranteed.

[0012] As a preferred technical means: on the lower surface of the clamping connection seat plate, there is a dovetail-shaped connection guide rail in the front-back direction; the clamping connection seat plate is arranged with a plurality of bolt holes in the front-back direction, and the bolt holes penetrate through the clamping connection seat plate and the connection guide rail from top to bottom. The left claw can be slidably matched with the connection guide rail through a dovetail-shaped chute arranged on the mounting seat, and can be fixedly fastened through bolts at each bolt hole of the connection guide rail. The connection structure of the right claw and the right sliding connection seat is the same. This structure can facilitate the installation and replacement of clamping jaws of different specifications to adapt to different pipelines, and the distance between the two sets of clamping jaws can be adjusted according to the actual length of the pipeline to be clamped to achieve a better clamping effect.

[0013] As a preferred technical means: the claw body includes 2 identical claw plates, the 2 claw plates are arranged in parallel, a plurality of connecting rib plates are connected between the 2 claw plates, each claw plate is provided with a plurality of material-reducing through holes, and a plurality of spring seat plates are connected to the back side of the claw body, and one end of the spring facing away from the buffer pad is arranged on the spring seat plate. The hollow structure of the claw body is effectively realized, and this structure can effectively guarantee the structural strength.

[0014] Beneficial effects:

[0015] 1. The double-clamping structure is adopted, and the pipeline is clamped at both ends respectively, and the pipeline can be effectively clamped.

[0016] 2. Different specifications of clamping jaws can be conveniently installed and replaced, which can effectively adapt to different pipelines, and the distance between the two sets of clamping jaws can be adjusted according to the actual length of the pipeline to be clamped, and a better clamping effect can be achieved.

[0017] 3. The worm and worm gear reducer with self-locking property and the sliding lifting mechanism with self-locking property are adopted, so that this mechanism has reliable stability and safety.

[0018] 4. The pressure sensor arranged on the clamping jaw and the limit sensor arranged on the elevator make the clamping force of the clamping jaw and the lifting range automatically controllable, making this mechanism intelligent.

[0019] 5. The structure of this mechanism and the high-inertia servo motor and worm and worm gear reducer adopted make the clamping force large and the control accurate and controllable.

[0020] 6. On the premise of ensuring the structural strength, the mechanism uses relatively less material and has a lower material cost. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the clamping pipe of the present invention.

[0022] Figure 2 is a schematic diagram of the structure of the present invention.

[0023] Figure 3 is a schematic diagram of the sliding lifting mechanism of the present invention.

[0024] Figure 4 is a schematic diagram of the jaw structure in the present invention.

[0025] Figure 5 is a schematic diagram of the claw body structure in the present invention.

[0026] Figure 6 is the present invention Figure 2 Enlarged schematic diagram of part A in

[0027] Figure 7 is a schematic diagram of the connection between the worm and worm gear reducer and the lifting block of the present invention

[0028] In the figure: 1, frame; 2, lifting drive device; 3, sliding lifting mechanism; 4, clamp; 5, pipe; 6, sliding guide mechanism; 101, frame platform; 102, connecting frame; 10201, flat plate; 10202, vertical plate; 10203, reinforcing rib plate; 201, servo motor; 202, worm and worm gear reducer; 203, limit sensor; 204, connecting disc; 301, lifting block; 302, left sliding connection seat; 303, right sliding connection seat; 304, fixing plate; 305, clamp connection seat plate; 306, reinforcing rib plate; 307, connecting guide rail; 308, bolt hole; 30101, waist guide rail; 401, mounting seat; 402, claw body; 40201, claw plate; 40202, connecting rib plate; 40203, material-reducing through hole; 40204, spring seat plate; 403, buffer pad; 404, spring; 405, pressure sensor; 601, linear guide rail; 602, horizontal slider. Detailed Description of the Invention

[0029] The technical solutions of the present invention will be further described in detail below in conjunction with the drawings in the specification.

[0030] As Figure 1-3As shown in the figure, a double-clamping mechanism for GIS pipelines includes a frame 1, a lifting drive device 2, a sliding lifting mechanism 3, and two sets of clamps 4. The sliding lifting mechanism 3 includes a lifting block 301, a left sliding connection seat 302, and a right sliding connection seat 303. The two sets of clamps 4 are symmetrically arranged left and right, front and back. Each set of clamps 4 includes a left claw and a right claw. The left claw is connected to the lower part of the left sliding connection seat 302, and the right claw is connected to the lower part of the right sliding connection seat 303. The lifting drive device 2 is connected to the lifting block 301 to drive the lifting block 301 to lift and lower. The left sliding connection seat 302 and the right sliding connection seat 303 are arranged under the machine base, and a sliding guiding mechanism 6 for horizontal relative movement is provided between the left sliding connection seat 302 and the right sliding connection seat 303 and the machine base, so that the clamps 4 can make horizontal relative movement when clamping or releasing the clamped pipeline 5. The lifting block 301 is an inverted isosceles trapezoidal block, and two waists of the isosceles trapezoidal block are provided with waist guide rails 30101 in the direction of the waist line. The left sliding connection seat 302 and the right sliding connection seat 303 are provided with chutes that are slidably matched with the waist guide rails 30101 of the lifting block 301. When the lifting block 301 lifts and lowers, the left sliding connection seat 302 and the right sliding connection seat 303 move obliquely relative to the lifting block 301 along the waist guide rails 30101, so that the left sliding connection seat 302 and the right sliding connection seat 303 approach or separate, thereby driving the clamps 4 to clamp or release the clamped pipeline 5.

[0031] In order to achieve a higher clamping force and self-locking performance, as Figure 2 shown, the lifting drive device 2 includes a high-inertia servo motor 201 and a worm and worm gear reducer 202 connected to the servo motor 201. The worm and worm gear reducer 202 is connected to the lifting block 301, and upper and lower limit sensors 203 for limiting the lifting and lowering distance of the lifting block 301 are provided on the lifting drive device 2. By using a high-inertia servo motor 201 and a worm and worm gear reducer 202, the clamping force is large, the control is accurate and controllable, and it has good self-locking performance. The setting of the upper and lower limit sensors 203 makes the lifting range automatically controllable.

[0032] In order to achieve lifting drive, as Figure 2 、 7 shown, the frame 1 includes a frame platform 101 and a connecting frame 102. The lifting drive device 2 is arranged on the upper surface of the frame platform 101. The output shaft of the worm of the worm and worm gear reducer 202 passes through the frame platform 101 and is then connected to the lifting block 301 through a connecting disc 204. There are two connecting frames 102, which are symmetrically arranged in parallel under the frame platform 101. The two connecting frames 102 are respectively connected to the left sliding connection seat 302 and the right sliding connection seat 303 through the sliding guiding mechanism 6. It effectively realizes the connection between the lifting block 301 and the lifting drive device 2, realizes the connection between the frame 1 and the sliding lifting mechanism 3, and realizes the lifting drive.

[0033] In order to achieve the sliding connection structure between the frame 1 and the sliding lifting mechanism 3, as Figure 6 shown, the sliding guide mechanism 6 includes two linear guide rails 601 and four horizontal sliders 602 that match therewith. There are two linear guide rails 601 in total, which are respectively arranged on the opposite sides of two connecting brackets 102. The horizontal sliders 602 are arranged on the front and rear sides of the upper parts of the left sliding connection seat 302 and the right sliding connection seat 303. The sliding connection structure between the frame 1 and the sliding lifting mechanism 3 is effectively achieved.

[0034] In order to achieve the structure of the connecting bracket 102, as Figure 6 shown, each connecting bracket 102 includes a flat plate 10201, a vertical plate 10202 and six reinforcing rib plates 10203. The vertical plate 10202 is arranged under the flat plate 10201 and is arranged at a right angle to the flat plate 10201. The linear guide rail 601 is connected to the inner sides of the vertical plates 10202 of the two connecting brackets 102. The reinforcing rib plates 10203 are arranged at equal intervals in the left - right direction and are connected to the lower end surface of the horizontal plate 10201 and the outer side surface of the vertical plate 10202. The connecting bracket 102 is made by connecting sheet materials, realizing the structure of the connecting bracket 102, saving materials, being convenient for processing, and effectively ensuring the structural strength through the reinforcing rib plates 10203.

[0035] In order to reduce the complexity of the structure, the waist guide rail 30101 of the lifting block 301 adopts a T - shaped or dovetail - shaped guide rail structure. Except for the sliding direction, the T - shaped or dovetail - shaped guide rail has an anti - detachment function. Compared with the rectangular chute block structure, it can reduce the number of parts and the complexity of the structure.

[0036] In order not to damage the pipeline 5, reduce the weight and maintain the structural strength, as Figure 4 shown, the left claw includes a mounting seat 401, a claw body 402, two buffer pads 403, two springs 404 and two pressure sensors 405. The claw body 402 adopts a hollow structure. The claw body 402 is connected to the mounting seat 401. The mounting seat 401 is fixedly connected to the left sliding connection seat 302. The spring 404 is arranged inside the claw body 402. One side of the claw body 402 that clamps the pipeline 5 is the clamping side. One end of the spring 404 facing the clamping side is connected to the buffer pad 403. The pressure sensor 405 passes through the buffer pad 403, and the pressure - sensing surface of the pressure sensor 405 faces the pipeline 5 to be clamped. The right claw has the same structure as the left claw. The clamping sides of the left claw and the right claw are arc - shaped. The claw adopts a hollow structure, which can greatly reduce the weight on the premise of effectively ensuring the structural strength. The buffer pad 403 supported by the spring 404 can achieve elastic clamping during clamping. The pressure sensor 405 can easily sense the clamping force, and through the force feedback, the control of the clamping force is realized. The overall structure has high strength, the claw will not deform during clamping, is light in weight, consumes less energy, the elastic clamping and controllable force feedback make the claw not easy to damage the pipeline 5, and the arc - shaped clamping side is more suitable for clamping the pipeline 5.

[0037] To ensure the structural strength of the sliding connection seat and effectively reduce costs, as Figure 3 shown, at the upper left end of the left sliding connection seat 302, there is a fixing plate 304 for two horizontal sliders 602. At the lower end of the left sliding connection seat 302, there is a front-back clamping connection seat plate 305. On the upper left and right sides of the upper surface of the clamping connection seat plate 305, there are reinforcing rib plates 306. The reinforcing rib plates 306 connect the upper end surface of the clamping connection seat plate 305 and the lower side surface of the left sliding connection seat 302. The right sliding connection seat 303 has the same structure as the left sliding connection seat 302. The sliding connection seat of this structure uses relatively less material and has a lower cost, but can effectively ensure the structural strength.

[0038] To install and replace clamping jaws 4 of different specifications and adjust the spacing between the two sets of clamping jaws 4, as Figure 2 、 3 shown, on the lower surface of the clamping connection seat plate 305, there is a front-back dovetail connection guide rail 307. The clamping connection seat plate 305 is arranged with bolt holes 308 in the front-back direction. The bolt holes 308 penetrate through the clamping connection seat plate 305 and the connection guide rail 307 from top to bottom. The left claw is slidably matched with the connection guide rail 307 through a dovetail chute provided on the mounting seat 401, and can be firmly fixed at each bolt hole 308 of the connection guide rail 307 through bolts. The connection structure of the right claw and the right sliding connection seat 303 is the same. This structure can conveniently install and replace clamping jaws 4 of different specifications to adapt to different pipes 5, and the spacing between the two sets of clamping jaws 4 can be adjusted according to the actual length of the clamped pipe 5 as needed to achieve a better clamping effect.

[0039] To achieve the hollow structure of the claw body 402, as Figure 5 shown, the claw body 402 includes two identical claw plates 40201. The two claw plates 40201 are arranged in parallel. Between the two claw plates 40201, there are seven connecting rib plates 40202. On each claw plate 40201, there are six material-reducing through holes 40203. On the back side of the claw body 402, there are two spring seat plates 40204. One end of the spring 404 facing away from the buffer pad 403 is arranged on the spring seat plates 40204. The hollow structure of the claw body 402 is effectively achieved, and this structure can effectively ensure the structural strength.

[0040] When clamping the pipeline 5, the lifting drive device 2 drives the lifting block 301 to descend. At this time, the left sliding connection seat 302 and the right sliding connection seat 303 relatively obliquely ascend along the waist guide rail 30101 of the lifting block 301. Due to the sliding guide mechanism 6 that has a horizontal relative movement with the machine base, the left sliding connection seat 302 and the right sliding connection seat 303 move in opposite directions along the sliding guide mechanism 6, opening the clamping jaws 4. When the robotic arm of the device moves to align the clamping jaws 4 with the pipeline 5 and descends to the clamping position, the lifting drive device 2 then drives the lifting block 301 to ascend, driving the left sliding connection seat 302 and the right sliding connection seat 303 to move towards each other, causing the clamping jaws 4 to clamp the pipeline 5. Since the left sliding connection seat 302 and the right sliding connection seat 303 slide obliquely along the trapezoidal lifting block 301, when tightened, under the action of gravity, a self-locking phenomenon will occur between the left sliding connection seat 302 and the right sliding connection seat 303 and the lifting block 301. The pressure sensor 405 can real-time feedback the contact force between the clamping jaws 4 and the pipeline 5 to the control system to achieve force control. At the same time, the double clamping jaws 4 are used to clamp the pipeline 5. Compared with the traditional pipe clamping mechanism, it has higher stability, reliability, accuracy and safety, and can firmly clamp the pipeline 5 stably and reliably.

[0041] The above Figure 1-7 A GIS pipeline double clamping jaw mechanism shown above is a specific embodiment of the present invention, which has already reflected the prominent substantive features and remarkable progress of the present invention. According to the actual use needs, under the inspiration of the present invention, equivalent modifications can be made to its shape, structure, etc., which are all within the protection scope of this solution.

Claims

1. A double clamping mechanism for GIS pipelines, characterized in that: It includes a frame (1), a lifting drive device (2), a sliding lifting mechanism (3) and two sets of clamping jaws (4). The lifting drive device (2) includes a self-locking worm and worm gear reducer. The sliding lifting mechanism (3) includes a lifting block (301), a left sliding connection seat (302) and a right sliding connection seat (303). The two sets of clamping jaws (4) are symmetrically arranged left and right, front and back. Each set of clamping jaws (4) includes a left clamping jaw and a right clamping jaw. The left clamping jaw is connected to the lower part of the left sliding connection seat (302), and the right clamping jaw is connected to the lower part of the right sliding connection seat (303). The lifting drive device (2) is connected to the lifting block (301) to drive the lifting of the lifting block (301). The left sliding connection seat (302) and the right sliding connection seat (303) are arranged under the machine base, and a sliding guiding mechanism (6) for horizontal relative movement is provided between the left sliding connection seat (302) and the right sliding connection seat (303) and the machine base, so that the clamping jaws (4) can make horizontal relative movement when clamping or releasing the clamped pipe (5). The lifting block (301) is an inverted isosceles trapezoid block, and two waists of the isosceles trapezoid block are provided with waist guide rails (30101) in the direction of the waist line. The left sliding connection seat (302) and the right sliding connection seat (303) are provided with chutes that are slidably matched with the waist guide rails (30101) of the lifting block (301). When the lifting block (301) lifts, the left sliding connection seat (302) and the right sliding connection seat (303) move obliquely relative to the lifting block (301) along the waist guide rails (30101), so that the left sliding connection seat (302) and the right sliding connection seat (303) approach or separate, thereby driving the clamping jaws (4) to clamp or release the clamped pipe (5). The left clamping jaw includes a mounting seat (401), a jaw body (402), a plurality of buffer pads (403), a plurality of springs (404) and a plurality of pressure sensors (405). The jaw body (402) adopts a hollow structure. The jaw body (402) is connected to the mounting seat (401). The mounting seat (401) is fixedly connected to the left sliding connection seat (302). The springs (404) are arranged inside the jaw body (402). One side of the jaw body (402) for clamping the pipe (5) is the clamping side. One end of the spring (404) facing the clamping side is connected to the buffer pad (403). The pressure sensor (405) passes through the buffer pad (403), and the pressure sensing surface of the pressure sensor (405) faces the clamped pipe (5). The right clamping jaw has the same structure as the left clamping jaw, and the clamping sides of the left clamping jaw and the right clamping jaw are arc-shaped. The lower end of the left sliding connecting seat (302) is provided with a front-back clamping connecting seat plate (305). Below the clamping connecting seat plate (305), there is a front-back dovetail-shaped connecting guide rail (307). The clamping connecting seat plate (305) is arranged with a plurality of bolt holes (308) in the front-back direction. The bolt holes (308) penetrate through the clamping connecting seat plate (305) and the connecting guide rail (307) from top to bottom. The left claw is slidably matched with the connecting guide rail (307) through a dovetail-shaped sliding groove provided on the mounting seat (401), and can be fixedly fastened through bolts at each bolt hole (308) of the connecting guide rail (307). The connection structure of the right claw and the right sliding connecting seat (303) is the same; The lifting block (301) forms self-locking with the left and right sliding connecting seats under the action of gravity; the distance between the two sets of clamps (4) is adjustable through the dovetail-shaped connecting guide rail (307) and the bolt holes (308) to meet the clamping requirements of pipes with different lengths.

2. The GIS pipeline double clamping mechanism according to claim 1, characterized in that: The lifting drive device (2) includes a high-inertia servo motor (201) and a worm and worm gear reducer (202) connected to the servo motor (201). The worm and worm gear reducer (202) is connected to the lifting block (301). The lifting drive device (2) is provided with upper and lower limit sensors (203) for limiting the lifting distance of the lifting block (301).

3. The GIS pipeline double clamping mechanism according to claim 2, characterized in that: The frame (1) includes a frame platform (101) and a connecting frame (102). The lifting drive device (2) is arranged on the upper surface of the frame platform (101). The output shaft of the worm of the worm and worm gear reducer (202) passes through the frame platform (101), and then is connected to the lifting block (301) through a connecting disk (204). There are two connecting frames (102) in total, which are symmetrically arranged in parallel on the lower surface of the frame platform (101). The two connecting frames (102) are respectively connected to the left sliding connecting seat (302) and the right sliding connecting seat (303) through a sliding guiding mechanism (6).

4. The GIS pipeline double clamping mechanism according to claim 3, characterized in that: The sliding guiding mechanism (6) includes a linear guide rail (601) and four horizontal sliders (602) matching therewith. There are two linear guide rails (601) in total, which are respectively arranged on the opposite sides of the two connecting frames (102). The horizontal sliders (602) are arranged on the front and back sides of the upper parts of the left sliding connecting seat (302) and the right sliding connecting seat (303).

5. The GIS pipeline double clamping mechanism according to claim 4, characterized in that: Each connecting frame (102) includes a flat plate (10201), a vertical plate (10202) and a plurality of reinforcing rib plates (10203). The vertical plate (10202) is arranged below the flat plate (10201) and is arranged at a right angle to the flat plate (10201). The linear guide rail (601) is connected to the inner side surfaces of the vertical plates (10202) of the two connecting frames (102). The reinforcing rib plates (10203) are arranged at equal intervals in the left-right direction and are connected to the lower end surface of the horizontal plate (10201) and the outer side surface of the vertical plate (10202).

6. The double clamping mechanism for GIS pipelines according to claim 1, characterized in that: The waist guide rail (30101) of the lifting block (301) adopts a T-shaped or dovetail-shaped guide rail structure.

7. The GIS pipeline double clamping mechanism according to claim 6, characterized in that: The upper left end of the left sliding connection seat (302) is provided with a fixing plate (304) for two horizontal sliders (602). Reinforcing rib plates (306) are arranged on the left and right sides of the upper surface of the clamping connection seat plate (305). The reinforcing rib plates (306) connect the upper end surface of the clamping connection seat plate (305) and the lower side surface of the left sliding connection seat (302). The right sliding connection seat (303) has the same structure as the left sliding connection seat (302).

8. A GIS pipeline double clamping mechanism according to claim 1, characterized in that: The claw body (402) includes two identical claw plates (40201). The two claw plates (40201) are arranged in parallel. A plurality of connecting rib plates (40202) are connected between the two claw plates (40201). A plurality of material-reducing through holes (40203) are arranged on each claw plate (40201). A plurality of spring seat plates (40204) are connected to the back side of the claw body (402). One end of the spring (404) facing away from the buffer pad (403) is arranged on the spring seat plate (40204).

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