A butt joint surface quick locking device for GIS voltage resistance test

Abstract

This utility model provides a rapid locking device for mating surfaces in GIS pressure resistance testing, comprising: a tooling cylinder; multiple clamping components evenly spaced around the axis of the tooling cylinder on its outer circumferential surface, including a connecting seat, a slide seat slidably mounted on the connecting seat, electric cylinders and support arms respectively disposed on both sides of the slide seat, and a first arm and a second arm spaced apart on the support arm. The middle area of ​​the first arm is hinged to the support arm, and a connecting rod is hinged to one end, the other end of the connecting rod is hinged to the slide seat, and the telescopic rod of the electric cylinder is hinged to the slide seat; it also includes a clamping arm, one end of which is hinged to the other end of the first arm, the middle area of ​​which is hinged to the end of the second arm, and the other end of the second arm is hinged to the middle area of ​​the support arm. The above structure breaks through the step-by-step operation mode of traditional bolt tightening, and achieves rapid locking of the mating surfaces through the combination of electric drive and parallelogram mechanism, greatly improving the testing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of GIS pressure resistance testing equipment, and in particular to a quick-locking device for mating surfaces in GIS pressure resistance testing. Background Technology

[0002] GIS pressure resistance testing is a mandatory test for product shipment. The test process includes product docking with the pressure-resistant flange, bolt tightening, gas treatment, pressure test, gas chamber recirculation, and disassembly of the docking surface. After pressure docking, bolts are generally used for tightening. Bolt tightening ensures sufficient connection strength at the flange surfaces; however, bolt tightening has low efficiency, and foreign matter generated during bolt tightening may affect product quality. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a quick-locking device for the mating surface of GIS pressure resistance testing.

[0004] To achieve the above objectives, the technical solution of this utility model is: a rapid locking device for mating surfaces in GIS pressure resistance testing, comprising: Tooling cylinder; Multiple clamping components are evenly spaced around the axis of the tooling cylinder on the outer circumferential surface of the tooling cylinder, including a connecting seat, a slide seat slidably mounted on the connecting seat, electric cylinders and support arms respectively mounted on both sides of the slide seat, and a first arm and a second arm spaced apart on the support arm. The middle area of ​​the first arm is hinged to the support arm, and a connecting rod is hinged to one end. The other end of the connecting rod is hinged to the slide seat. The telescopic rod of the electric cylinder is hinged to the slide seat. The clamping assembly also includes a clamping arm, one end of which is hinged to the other end of the first arm, the middle region of which is hinged to the end of the second arm, and the other end of the second arm is hinged to the middle region of the support arm. The distance between the clamping arm and the hinged positions of the first arm, the second arm and the support arm is equal to the distance between the clamping arm and the hinged position.

[0005] Furthermore, the clamping arm is provided with two clamping heads on the side near the connecting seat.

[0006] Furthermore, a guide rail is provided on the side of the connecting seat away from the tooling cylinder, and the slide seat is guided and engaged with the guide rail.

[0007] Furthermore, the guide member is a dovetail plate integrally formed with the connecting seat, and the slide is provided with a dovetail groove adapted to the dovetail plate.

[0008] Furthermore, the length of the connecting rod can be adjusted.

[0009] Furthermore, the connecting rod includes a joint that is hinged to the first arm and the slide respectively, and a double-ended screw that is threaded to the two joints, with the threads at both ends of the double-ended screw having opposite directions.

[0010] Furthermore, the clamping arm includes a first clamping arm hinged to the first arm and the second arm, and an extension clamping arm detachably connected to the first clamping arm. The extension clamping arm extends out of the first clamping arm at the end away from the first arm, and two clamping heads are respectively disposed on the extension clamping arm and the first clamping arm.

[0011] Furthermore, the outer circumferential surface of the tooling cylinder is provided with multiple mounting parts at intervals, and the connecting seat is detachably and fixedly connected to the mounting parts.

[0012] Furthermore, the connecting seat is integrally provided with a support seat, and the electric cylinder is mounted on the support seat.

[0013] The present invention discloses a rapid locking device for mating surfaces in GIS pressure resistance testing, which has the following advantages compared with the prior art: it breaks through the step-by-step operation mode of traditional bolt tightening, and achieves rapid locking of mating surfaces through the combination of electric drive and parallelogram mechanism, avoiding foreign objects such as metal shavings generated by bolt tightening, and shortening the tightening time from the traditional 15-20 minutes to 2-3 minutes, greatly improving the test efficiency. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a rapid locking device for mating surfaces in use for GIS pressure resistance testing, according to this utility model.

[0015] Figure 2 This is a side view of the structure of a quick-locking device for the mating surface of a GIS pressure resistance test according to the present invention.

[0016] Figure 3 This is a partial structural diagram of a rapid locking device for mating surfaces in GIS pressure testing, according to this utility model. Figure 1 .

[0017] Figure 4 This is a partial structural diagram of a rapid locking device for mating surfaces in GIS pressure testing, according to this utility model. Figure 2 .

[0018] Figure 5 This is a schematic diagram of the connection structure between the first arm and the clamping arm in a quick-locking device for the mating surface of a GIS pressure test according to this utility model.

[0019] Figure 6 This is a schematic diagram of the connection structure of the tooling cylinder and clamping components in a quick-locking device for the mating surface of a GIS pressure test according to the present invention.

[0020] In the diagram: 1. GIS test piece; 10. Flange; 12. Tooling cylinder; 2. Clamping assembly; 120. Mounting part; 20. Support base; 201. Telescopic rod; 202. Slide; 203. First pin; 21. First arm; 210. Second pin; 211. Third pin; 212. Fourth pin; 22. Second arm; 220. Fifth pin; 221. Sixth pin; 23. Clamping arm; 23a. First clamping arm; 23b. Extension clamping arm; 230. Clamping head; 231. Insertion slot; 232. Insertion piece; 24. Connecting seat; 240. Guide rail; 241. Support arm; 25. Connecting rod; 250. Joint; 251. Double-ended screw; 26. Electric cylinder. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Please refer to Figure 1-6 As a specific implementation method, the technical solution of this utility model is: a rapid locking device for mating surfaces in GIS pressure resistance testing, comprising: Tooling cylinder 12; Multiple clamping components 2 are evenly spaced around the axis of the tooling cylinder 12 on the outer circumferential surface of the tooling cylinder 12. They include a connecting seat 24, a slide 202 slidably mounted on the connecting seat 24, an electric cylinder 26 and a support arm 241 respectively disposed on both sides of the slide 202, and a first arm 21 and a second arm 22 spaced apart on the support arm 241. The middle area of ​​the first arm 21 is hinged to the support arm 241, and a connecting rod 25 is hinged to one end. The other end of the connecting rod 25 is hinged to the slide 202. The telescopic rod 201 of the electric cylinder 26 is hinged to the slide 202. The clamping assembly 2 also includes a clamping arm 23, one end of which is hinged to the other end of the first arm 21, the middle region of which is hinged to the end of the second arm 22, and the other end of the second arm 22 is hinged to the middle region of the support arm 241. The distance between the clamping arm 23 and the hinged positions of the first arm 21, the second arm 22 and the support arm 241 is equal to the distance between the clamping arm 23 and the hinged position.

[0023] Specifically, it should be noted that the tooling cylinder 12 is fixedly mounted on the frame of the pressure testing equipment, providing a position for the GIS to be tested. The GIS to be tested is a metal cylinder structure with a flange 10 at its end. In this application, the tooling cylinder 12 is a cylinder capable of docking with the flange at the end of the GIS to be tested. Multiple clamping components 2 are evenly spaced around the cylinder to clamp the flange of the GIS to be tested after docking with the tooling cylinder 12, ensuring that each clamping component 2 is subjected to uniform force. The clamping components 2 are evenly distributed around the outer circumference of the tooling cylinder 12, and the number can be adapted to 3-6 sets according to the size of the docking flange. The comprehensive locking of the docking surface is achieved through the coordinated action of multiple sets. The connecting seat 24 is fixed to the outer circumference of the tooling cylinder 12. The slide 202 forms a sliding fit with the connecting seat 24 through a guide structure. The electric cylinder 26 and the support arm 241 are located on both sides of the slide 202, providing power support and structural fulcrum for the clamping action. A first arm 21 and a second arm 22 are spaced apart on the support arm 241. Specifically, the first arm 21 is located on the side of the second arm 22 away from the tooling cylinder 12. The middle area of ​​the first arm 21 is hinged to the support arm 241 via a third pin 211, allowing the first arm 21 to rotate around the hinge point. One end of the first arm 21 is hinged to the connecting rod 25 via a second pin 210. The slide block 202 is hinged to the electric cylinder 26 and the connecting rod 25 via two first pins 203, respectively. This allows the slide block 202 to slide guide when the electric cylinder 26 extends or retracts, thereby causing the first arm 21 to swing around the third pin 211. The clamping arm 23, as an actuator that directly acts on the docking flange, has one end connected to the first arm 241. The other end of one arm 21 is hinged to the fourth pin 212. The middle area of ​​the clamping arm 23 is hinged to the end of the second arm 22 via the sixth pin 221. The other end of the second arm 22 is hinged to the support arm 241 via the fifth pin 220. The distance between the fifth pin 220 and the third pin 211 is equal to the distance between the fourth pin 212 and the sixth pin 221. The line connecting the fifth pin 220 and the third pin 211 is parallel to the line connecting the fourth pin 212 and the sixth pin 221. This size design makes the hinged areas of the first arm 21, the second arm 22, the support arm 241 and the clamping arm 23 form a parallelogram linkage 25 mechanism. This structure breaks through the traditional step-by-step operation mode of bolt tightening. By combining electric drive with a parallelogram mechanism, it achieves rapid locking of the mating surfaces, avoiding foreign objects such as metal shavings generated by bolt tightening. At the same time, it reduces the tightening time from the traditional 15-20 minutes to 2-3 minutes, greatly improving test efficiency.

[0024] Furthermore, as a specific implementation method, refer to Figures 2-4In one specific implementation, the clamping arm 23 is provided with two clamping heads 230 on the side near the connecting seat 24. Specifically, the clamping heads 230 can be made of hard alloy material and are detachably fixed to the clamping arm 23 by screws. The two clamping heads 230 are distributed at intervals along the length of the clamping arm 23, and the spacing can be adjusted according to the flange thickness. During clamping, they can simultaneously contact two different positions of the flange to form a two-point positioning clamping. Compared with the single-point contact clamping structure, this double clamping head 230 design can disperse and transmit the clamping force, avoid deformation caused by excessive local stress on the mating flange, improve the stability of clamping, and further ensure the sealing performance of the mating surface.

[0025] Furthermore, as a specific implementation, a guide rail 240 is provided on the side of the connecting seat 24 away from the tooling cylinder 12, and the slide 202 is guided and engaged with the guide rail 240. Specifically, the guide rail 240 provides a clear directional constraint on the movement of the slide 202, preventing lateral swaying or offset of the slide 202 when driven by the electric cylinder 26, and ensuring that the power transmitted by the connecting rod 25 is accurately applied to the first arm 21. This guiding structure solves the problems of dispersed power transmission and insufficient clamping accuracy when there is no guide, improving the synchronization of the actions of each clamping component 2 to over 95%, and ensuring uniform locking force at all positions on the mating surface.

[0026] Furthermore, as a specific implementation, the guide member is a dovetail plate integrally formed with the connecting seat 24, and the slide 202 is provided with a dovetail groove adapted to the dovetail plate. Specifically, the dovetail structure has a natural anti-detachment advantage, which can effectively limit the displacement of the slide 202 in the direction perpendicular to the sliding direction, and can both achieve the guiding function and limit the slide 202 to prevent the slide 202 from detaching from the connecting seat 24.

[0027] Furthermore, as a preferred embodiment, refer to Figure 3 , Figure 4 , Figure 6 The length of the connecting rod 25 is adjustable. Specifically, the connecting rod 25 has an adjustable length structure, and by changing the effective length of the connecting rod 25, the initial position and maximum clamping stroke of the clamping arm 23 can be adjusted.

[0028] Further, as a specific implementation, the connecting rod 25 includes joints 250 hinged to the first arm 21 and the slide 202 respectively, and a double-ended screw 251 threadedly connected to the two joints 250. The threads at both ends of the double-ended screw have opposite directions of rotation. Specifically, the connecting rod 25 consists of two joints 250 and a double-ended screw. Both joints 250 are ear plate structures, hinged to the slide 202 and the first shaft via pins to ensure a certain angle compensation during power transmission. The two ends of the double-ended screw are threadedly connected to the two joints 250 respectively, and the threads at both ends have opposite directions of rotation. When it is necessary to adjust the length of the connecting rod 25, simply rotate the double-ended screw. Due to the opposite directions of rotation of the threads, the two joints 250 will move simultaneously in the direction of approaching or moving away, achieving precise fine-tuning of the length of the connecting rod 25. This threaded adjustment structure does not require additional driving components and can be operated manually. Moreover, the threaded connection has a self-locking characteristic, and the length will not change due to vibration after adjustment, ensuring clamping stability.

[0029] Further, as a specific embodiment, the clamping arm 23 includes a first clamping arm 23a hinged to the first arm 21 and the second arm 22, and an extension clamping arm 23b detachably connected to the first clamping arm 23a. The extension clamping arm 23b extends out of the first clamping arm 23a at the end away from the first arm 21, and two clamping heads 230 are respectively disposed on the extension clamping arm 23b and the first clamping arm 23a. (Reference) Figures 2-5 The clamping arm 23 has a plate-like structure with two insertion slots 231 on its side opposite to the first arm 21 and the second arm 22. The extension arm has insertion parts 232 that mate with the insertion slots 231. Specifically, the insertion part 232 is a dovetail plate integrally formed with the extension arm, and the insertion slots 231 are dovetail grooves. The guide direction of the dovetail grooves is parallel to the axis of the fourth pin 212. This design facilitates the assembly of the extension plate and the clamping arm 23. When dealing with ultra-wide flanges or special-shaped mating surfaces, extension clamping arms 23b of different lengths can be replaced, or the installation position of the clamping head 230 on the extension clamping arm 23b can be adjusted to ensure that the clamping head 230 is always in contact with the effective clamping area of ​​the flange. The detachable structure further expands the adaptability of the equipment. Compared with the integral clamping arm 23, its applicable flange width range is expanded by more than 2 times, and the replacement cost of the extension clamping arm 23b is only 1 / 4 of that of the integral clamping arm 23, reducing the operating cost of the equipment.

[0030] Furthermore, as a specific implementation method, refer to Figure 1 , Figure 6The tooling cylinder 12 has multiple mounting portions 120 spaced apart on its outer circumferential surface, and the connecting seat 24 is detachably fixed to the mounting portion 120. Specifically, the mounting portion 120 adopts a boss structure with threaded holes, and the connecting seat 24 is detachably fixed to the boss by bolts. Depending on the axial width of the mating flange, the connecting seat 24 can be installed on different mounting portions 120, ensuring precise correspondence between the clamping assembly 2 and the flange clamping position, avoiding uneven force on the mating surface due to clamping position deviation. The detachable connection method also facilitates the individual replacement and maintenance of the clamping assembly 2. When a set of clamping assemblies 2 malfunctions, it can be disassembled and repaired individually without disassembling the entire equipment, improving the equipment's operation and maintenance efficiency.

[0031] Furthermore, as a specific implementation, the connecting seat 24 is integrally provided with a support seat 20, and the electric cylinder 26 is disposed on the support seat 20. Specifically, the support seat 20 is welded and fixed to the connecting seat 24, providing a position for the electric cylinder 26 to be installed and fixed. The support arm 241 is also welded and fixed to the connecting seat 24, so that the support seat 20, the connecting seat 24 and the support arm 241 are an integral structure. The integral molding design reduces assembly steps, reduces the risk of component loosening, and ensures the long-term stable operation of the electric cylinder 26.

[0032] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A butt joint quick locking device for GIS pressure test, characterized in that, include: Tooling cylinder (12); Multiple clamping components (2) are evenly spaced around the axis of the tooling cylinder (12) on the outer circumferential surface of the tooling cylinder (12), including a connecting seat (24), a slide (202) slidably mounted on the connecting seat (24), an electric cylinder (26) and a support arm (241) respectively mounted on both sides of the slide (202), and a first arm (21) and a second arm (22) spaced apart on the support arm (241). The middle area of ​​the first arm (21) is hinged to the support arm (241), and a connecting rod (25) is hinged to one end. The other end of the connecting rod (25) is hinged to the slide (202). The telescopic rod (201) of the electric cylinder (26) is hinged to the slide (202). The clamping assembly (2) also includes a clamping arm (23), one end of which is hinged to the other end of the first arm (21), the middle area of ​​which is hinged to the end of the second arm (22), the other end of which is hinged to the middle area of ​​the support arm (241), and the distance between the first arm (21), the second arm (22) and the support arm (241) is equal to the distance between the clamping arm (23) and the first arm (21), the second arm (22) and the support arm (241).

2. The butt face quick locking device for GIS voltage-withstanding test according to claim 1, characterized in that, The clamping arm (23) has two clamping heads (230) on the side near the connecting seat (24).

3. The rapid locking device for mating surfaces in GIS pressure resistance testing according to claim 1, characterized in that, The connecting seat (24) is provided with a guide rail (240) on the side away from the tooling cylinder (12), and the slide (202) is guided and cooperated with the guide rail (240).

4. The rapid locking device for mating surfaces in GIS pressure resistance testing according to claim 3, characterized in that, The guide rail (240) is a dovetail plate integrally formed with the connecting seat (24), and the slide (202) is provided with a dovetail groove adapted to the dovetail plate.

5. The device according to claim 2, characterized in that, The length of the connecting rod (25) is adjustable.

6. The device according to claim 5, characterized in that, The connecting rod (25) includes a joint (250) that is hinged to the first arm (21) and the slide (202) respectively, and a double-ended screw that is threaded to the two joints (250), with the threads at both ends of the double-ended screw having opposite directions.

7. The device according to claim 6, characterized in that, The clamping arm (23) includes a first clamping arm (23a) hinged to the first arm (21) and the second arm (22) and an extension clamping arm (23b) detachably connected to the first clamping arm (23a). The extension clamping arm (23b) extends out of the first clamping arm (23a) away from the first arm (21), and two clamping heads (230) are respectively disposed on the extension clamping arm (23b) and the first clamping arm (23a).

8. A rapid locking device for mating surfaces in GIS pressure resistance testing according to claim 2, characterized in that, The outer circumferential surface of the tooling cylinder (12) is provided with multiple mounting parts (120) at intervals, and the connecting seat (24) is detachably and fixedly connected to the mounting parts (120).

9. The device according to claim 8, characterized in that, The connecting seat (24) is integrally provided with a support seat (20), and the electric cylinder (26) is provided on the support seat (20).

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