A leak detection device capable of detecting various deformation states of expansion joints

Abstract

The present invention discloses a leak detection device capable of detecting various deformation states of expansion joints, belonging to the technical field of expansion joints. It includes a support box body, a station conversion component connected to the middle of the upper end of the support box body, a linkage type loading and unloading component connected to the front end and the right end of the station conversion component, the lower end of the linkage type loading and unloading component is fixedly connected to the top of the support box body, a self-sealing cover type stretching leak detection component is connected to the top plate of the support box body at the rear end of the station conversion component, and an extrusion leak detection component is connected to the left end of the support box body. The expansion joint is conveyed to the station conversion component through the linkage type loading and unloading component, and the expansion joint is sequentially conveyed to the middle of the self-sealing cover type stretching leak detection component and the extrusion leak detection component through the station conversion component. The expansion joint is subjected to stretching leak detection through the self-sealing cover type stretching leak detection component, and the expansion joint is subjected to compression and bending leak detection through the extrusion leak detection component. After the leak detection is completed, the expansion joint is sent out through the linkage type loading and unloading component.

Description

Technical Field

[0001] The present invention relates to the technical field of expansion joints, and particularly relates to a leak detection device capable of detecting various deformation states of an expansion joint. Background Art

[0002] An expansion joint, also called a compensator, is a flexible element that can compensate for the deformation of pipes and shells, reducing the loads generated by the deformation of the pipes or shells, thereby avoiding damage. Since the compensator is mainly used for pipes or shells that often circulate fluids, the compensator needs to be leak-tested when it is produced.

[0003] For example, Chinese Patent CN219641166U proposes an airtightness detection device for an expansion joint, including a base and two pressing mechanisms installed on the base. A double-threaded screw rod is installed at the upper end of the base, and a servo motor is arranged at one end of the double-threaded screw rod. The two pressing mechanisms are respectively threadedly connected to both ends of the double-threaded screw rod; the pressing mechanism includes a connecting seat and a fixing plate vertically fixed on the connecting seat. Sealing covers are arranged on the sides of the two fixing plates close to each other and are coaxially arranged. A first rubber layer is arranged inside the sealing cover and is arranged on the fixing plate; an air inlet pipe is arranged on one pressing mechanism, and an air outlet pipe is arranged on one fixing plate. The inside of the expansion joint is inflated by connecting an external air pump to the air inlet pipe. If the expansion joint leaks, it will push the floating ball in the glass tube to move, so as to detect the airtightness of the expansion joint.

[0004] However, when the above patent conducts leak detection on the compensator, it can only detect the compensator in the undeformed state. Since the compensator mostly works in the states of tension, compression, and bending deformation during use, the above patent cannot detect whether the expander leaks in the deformed state, so the detection result is not comprehensive.

[0005] Based on this, the present invention designs a leak detection device capable of detecting various deformation states of an expansion joint to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned drawbacks of the prior art, the present invention provides a leak detection device capable of detecting various deformation states of an expansion joint.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] A leak detection device capable of detecting various deformation states of an expansion joint includes a support box body;

[0009] A work position conversion component for converting the work position of the expansion joint is connected to the middle of the upper end of the support box body;

[0010] The front end and the right end of the station conversion component are connected with a linkage type loading and unloading component for simultaneously loading and unloading the station conversion component, and the lower end of the linkage type loading and unloading component is fixedly connected to the top of the support box body;

[0011] On the top plate of the support box body at the rear end of the station conversion component, there is connected a self-sealing cover type stretching leak detection component that can automatically block the expansion joint and conduct stretching leak detection;

[0012] The left end of the support box body is connected with a squeezing leak detection component for bending and squeezing the expansion joint for leak detection;

[0013] The self-sealing cover type stretching leak detection component includes a clamping and stretching component and a linkage type self-sealing cover component. A clamping and stretching component is slidably connected to the top plate of the support box body at the rear end of the station conversion component. The rear end of the clamping and stretching component is connected with a linkage type self-sealing cover component, and the bottom of the linkage type self-sealing cover component is fixedly connected to the top of the support box body.

[0014] Furthermore, the clamping and stretching component includes an upper clamping frame, a lower clamping frame, a second air cylinder and a limit guiding component. An upper clamping frame is slidably connected to the top plate of the support box body at the rear end of the station conversion component. The top of the upper clamping frame is fixedly connected with a second air cylinder and a limit guiding component. The output end of the second air cylinder and the top of the limit guiding component are fixedly connected with a lower clamping frame.

[0015] Furthermore, the linkage type self-sealing cover component includes a third air cylinder, a linkage push plate, a telescopic linkage rod, a linkage sliding rod, a flap push plate, a rotating rod, a torsion spring, a rotating cover and a second air pressure detection component. A third air cylinder is fixedly connected to the top plate of the support box body on the right side of the upper clamping frame. Linkage sliding rods are slidably connected to the left and right ends of the inner bottom of the upper clamping frame and the top of the lower clamping frame respectively. The right ends of adjacent groups of linkage sliding rods are fixedly connected with a linkage push plate. A telescopic linkage rod is fixedly connected between the two groups of linkage push plates. The right end of the lower group of linkage push plates is fixedly connected to the output end of the third air cylinder. The left ends of adjacent groups of linkage sliding rods are fixedly connected with a flap push plate. Rotating rods are fixedly connected between the left and right inner walls of the upper clamping frame and the lower clamping frame respectively. Torsion springs are fixedly connected to the middle of the rotating rods. The outer ends of the torsion springs are fixedly connected with rotating covers. The ends of the rotating covers close to each other are respectively inserted into the upper and lower ends of the expansion joint. The flap push plate is slidably connected with the rotating cover. The top of the front end of the lower group of rotating covers is fixedly connected with a second air pressure detection component.

[0016] Furthermore, the squeezing leak detection component includes a pressing and blocking component and a bending and squeezing leak detection component. The left end of the support box body is connected with a pressing and blocking component, and the upper end of the pressing and blocking component is fixedly connected with a bending and squeezing leak detection component.

[0017] Furthermore, the pressing and sealing assembly includes a supporting vertical plate, a supporting horizontal plate, a second motor, a second threaded rod, a lower sealing cover, a first air pressure detection assembly, and a limiting sliding rod. A supporting vertical plate is fixedly connected to the left end of the supporting box body. The upper end of the supporting vertical plate is fixedly connected to a supporting horizontal plate. The top of the supporting horizontal plate is fixedly connected to a second motor. The output end of the second motor passes through the supporting horizontal plate and is fixedly connected to a second threaded rod. The lower end of the second threaded rod passes through the lower sealing cover and is rotatably connected to the left end of the supporting box body. The second threaded rod is threadedly connected to the lower sealing cover. Limiting sliding rods are fixedly connected to the bottom of the supporting horizontal plate on both the front and rear sides of the second threaded rod. The limiting sliding rods all pass through the left end of the lower sealing cover and are slidably connected to the lower sealing cover. The bottoms of the limiting sliding rods are fixedly connected to the left end of the supporting box body. A first air pressure detection assembly is fixedly connected to the top of the right end of the lower sealing cover.

[0018] Furthermore, the bending and squeezing leak detection assembly includes a first cylinder, an upper sealing cover, an adjustment chute, and a downward pressing slider. A set of first cylinders are fixedly connected to both the front and rear sides of the bottom of the right end of the supporting horizontal plate. The output ends of the first cylinders are rotatably connected to downward pressing sliders through hinge seats. An adjustment chute is opened at the upper end of the upper sealing cover. The two downward pressing sliders are respectively slidably connected to the front and rear ends inside the adjustment chute.

[0019] Furthermore, the linkage type loading and unloading assembly includes a linkage type unloading assembly and a linkage type loading assembly. The front end of the station conversion assembly is connected to the linkage type unloading assembly. The lower end of the linkage type unloading assembly is connected to the top plate of the supporting box body. The right end of the station conversion assembly is connected to the linkage type loading assembly. The bottom of the linkage type loading assembly is fixedly connected to the top plate of the supporting box body.

[0020] Furthermore, the linkage type unloading assembly includes a first motor, a first threaded rod, a blanking slider, a blanking slider, a first spring, a linkage rope, and a direction adjusting wheel. A notch is opened on the supporting box body below the front end of the station conversion assembly. A first motor is fixedly connected to the front side wall of the supporting box body at the front end of the notch. The output end of the first motor passes through the front side wall of the supporting box body and is fixedly connected to a first threaded rod. The rear end of the first threaded rod is rotatably connected to the rear side wall of the notch. The first threaded rod passes through the lower end of the blanking slider and is threadedly connected to the blanking slider. The left and right ends of the blanking slider are slidably connected to the top plate of the supporting box body through slide rails and sliders. The blanking slider passes through the front end of the blanking slider and is slidably connected to the blanking slider. The rear side of the upper end of the blanking slider is inclined. A baffle is fixedly connected to the bottom of the blanking slider. A first spring is fixedly connected between the baffle and the blanking slider. A linkage rope is fixedly connected to the rear side wall of the blanking slider. A direction adjusting wheel is rotatably connected to the top plate of the supporting box body behind the blanking slider. The linkage rope bypasses the direction adjusting wheel and is in rolling connection with the direction adjusting wheel.

[0021] Further, the linkage feeding component includes a feeding trough, a limiting sliding groove, a reset pull rod, a second spring, a feeding push block and a feeding port. The top of the support box body on the right side of the station conversion component is fixedly connected with the feeding trough. A limiting sliding groove is opened at the upper end of the feeding trough. The feeding push block is slidably connected inside the limiting sliding groove. The left side wall of the lower end of the feeding push block is fixedly connected with the other end of the linkage rope. The right side wall of the lower end of the feeding push block is fixedly connected with a reset pull rod. The reset pull rod passes through the right side wall of the feeding trough and is slidably connected with the feeding trough. A stop piece is fixedly connected to the right end of the reset pull rod. A second spring is fixedly connected between the stop piece and the feeding trough. The second spring wraps the right end of the feeding trough. A feeding port communicated with the limiting sliding groove is fixedly connected to the front end of the feeding trough. When the feeding push block is located on the right side of the feeding port, the upper end of the blanking slider is in contact connection with the upper end of the station conversion component. Beneficial effects

[0022] When the station conversion component drives the expansion joint to move in front of the upper clamping frame and the lower clamping frame, the third cylinder is started. The third cylinder drives the lower set of linkage push plates to move forward. The lower set of linkage push plates drive the upper set to move forward synchronously through the telescopic linkage rods. At this time, the rotating cover is in a vertical state under the limit of the flip cover push plate. At this time, the linkage push plates drive the rotating cover to move forward through the linkage slide rods and the flip cover push plate. The rotating cover drives the upper clamping frame and the lower clamping frame to move forward through the rotating rod and the torsion spring. The upper clamping frame and the lower clamping frame move forward and clamp the upper and lower ends of the expansion joint. When the upper clamping frame and the lower clamping frame move to the frontmost end, the linkage push plates continue to drive the linkage slide rods and the flip cover push plate to move forward. At this time, the flip cover push plate moves forward and drives the rotating cover to rotate in the direction of approaching each other. At this time, the rotating cover drives the torsion spring to move and causes the torsion spring to deform. When the rotating cover rotates to the end where they approach each other and is clamped to the upper and lower ends of the expansion joint, the third cylinder is stopped and started. At this time, the second air pressure detection component is located inside the expansion joint. When both the upper and lower ends of the expansion joint are sealed, the second cylinder is started. The second cylinder drives the lower clamping frame to move upward under the limit and guidance of the limit and guidance component. The lower clamping frame drives the upper set of linkage push plates to move upward under the limit and guidance of the telescopic linkage rods through the linkage slide rods. The lower clamping frame drives the upper end of the expansion joint to move upward, thereby stretching the expansion joint. At this time, the internal air pressure of the expansion joint is detected by the second air pressure detection component. By observing the change in the internal air pressure of the expansion joint, it is inferred whether the expansion joint leaks under the tensile deformation state, so that the leak detection of the expansion joint is more complete and specific. When the detection is completed, the second cylinder is started to make the lower clamping frame return to its original position. At this time, the third cylinder is started. The third cylinder drives the linkage push plates to move backward. When the flip cover push plate moves to the side where it separates from the rotating cover and moves away from each other, due to the restoring force of the torsion spring, the torsion spring drives the rotating cover to rotate in the direction of moving away from each other. At this time, the linkage push plates continue to move backward. The linkage push plates drive the upper clamping frame and the lower clamping frame to move backward through the linkage slide rods and the flip cover push plate, thereby completing the detachment of the expansion joint. In addition, when the expansion joint is transported between the upper cover and the lower cover by the station conversion component, the second motor is started. The second motor drives the second threaded rod to rotate under the support of the support vertical plate and the support horizontal plate. The second threaded rod drives the lower cover to move upward under the limit and guidance of the limit slide rod. The lower cover drives the first air pressure detection component to move upward and seal the lower end of the expansion joint. At this time, the first air pressure detection component is located inside the expansion joint. At this time, two groups of first cylinders are started simultaneously. The output end of the first cylinder drives the upper cover to move downward through the pressing slider. The upper cover moves downward and seals the upper end of the expansion joint. The first cylinder continues to run. The two groups of first cylinders continue to drive the upper cover to move downward. The upper cover moves downward and squeezes the expansion joint, thereby causing the expansion joint to undergo compressive deformation. At this time, the internal air pressure of the expansion joint is detected by the first air pressure detection component. By detecting the change in the internal air pressure of the expansion joint, it is confirmed whether the expansion joint leaks, so that it is detected whether the expansion joint leaks under the vertical compressive deformation.When the detection is completed, one of the first cylinders is started, and the output end of the first cylinder drives one end of the upper cover to move upward through the downward pressing slider. At this time, because the other first cylinder is not running, the other end of the upper cover does not move under the constraint of the other first cylinder, so that the expansion joint is bent and deformed. At this time, the internal air pressure of the expansion joint is detected by the first air pressure detection component to detect whether the expansion joint is leaking at this time, thereby realizing the leakage detection of the expansion joint during vertical compression deformation and bending deformation, so that the detection of the expansion joint is more comprehensive and specific.

[0023] When loading and unloading are required, the first motor is started, the output end of the first motor drives the first threaded rod to rotate, the first threaded rod drives the unloading slider to slide forward, and the unloading slider drives the unloading slider to slide to leave the station conversion assembly and be located below the lower end opening of the expansion joint. Under the action of the restoring force of the first spring, the first spring drives the unloading slider to move upward, and at this time the unloading slider continues to move forward, so that the unloading slider contacts the front end of the inner side wall of the expansion joint and drives the expansion joint to move forward. When the expansion joint moves to leave the station conversion assembly, the expansion joint can be removed. The loading block drives the expansion joint to move to the left under the limit guide of the loading trough and the limit slide and is clamped on the workstation conversion assembly. At this time, the loading block drives the reset rod to move to the left, and the reset rod drives the second spring to compress and deform. When the loading is completed, the first motor is started, and the first motor drives the unloading slide to move backward. The unloading slide drives the unloading slide to move until it contacts the workstation conversion assembly. The end is an inclined surface, so that the unloading slider is squeezed and moved downward by the station conversion assembly. At this time, the first spring is stretched and deformed. When the first spring moves to the top of the first spring and contacts the station conversion assembly, the first motor is stopped. Due to the backward movement of the unloading slider, the reset pull rod moves to the right under the action of the restoring force of the second spring, and the limiting slide drives the loading push block to move to the right, so that the loading push block moves to the right side of the feeding port. At this time, the station conversion assembly is started, and the station conversion assembly exchanges the station, so that the new station can be loaded and unloaded, thereby realizing the simultaneous loading and unloading of the expansion joint on the station conversion assembly, and the loading and unloading are linked to each other, so that only one set of first motors is needed to realize simultaneous loading and unloading, simple operation, and cost saving. In addition, when it is necessary to convert the station of the expansion joint, the expansion joint is transported to the inside of the card slot through the extrusion leak detection assembly, and the third motor is started. The output end of the third motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the turntable to rotate through the rotating shaft, and the turntable drives all the card slot conversion stations, thereby realizing the cyclic transportation of each station of the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0025] Figure 1 3D structure of a leak detection device for detecting various deformation states of an expansion joint according to the present invention Figure 1 ;

[0026] Figure 2 Front view of a leak detection device for detecting various deformation states of an expansion joint according to the present invention;

[0027] Figure 3 Left view of a leak detection device for detecting various deformation states of an expansion joint according to the present invention;

[0028] Figure 4 3D structure of a leak detection device for detecting various deformation states of an expansion joint according to the present invention Figure 2 ;

[0029] Figure 5 3D structure of a leak detection device for detecting various deformation states of an expansion joint according to the present invention Figure 3 ;

[0030] Figure 6 Is the sectional view along the Figure 2 A-A direction;

[0031] Figure 7 Is the sectional view along the Figure 3 C-C direction;

[0032] Figure 8 Is Figure 4 The enlarged view at position C in

[0033] The reference numerals in the figure respectively represent: 1. Support box body; 2. Linkage type loading and unloading component; 21. Linkage type unloading component; 211. First motor; 212. First threaded rod; 213. Unloading slider; 214. Unloading slider; 215. First spring; 216. Linkage rope; 217. Direction adjusting wheel; 22. Linkage type loading component; 221. Loading chute; 222. Limit chute; 223. Reset pull rod; 224. Second spring; 225. Loading push block; 226. Feeding port; 3. Extrusion leak detection component; 31. Pressing and sealing component; 311. Support vertical plate; 312. Support horizontal plate; 313. Second motor; 314. Second threaded rod; 315. Lower cover; 316. First air pressure detection component; 317. Limit slide bar; 32. Bending extrusion leak detection component; 321. First cylinder; 322. Upper cover; 323. Adjusting chute; 324. Lower pressing slider; 4. Self-sealing cover type stretching leak detection component; 41. Clamping and stretching component; 411. Upper clamping frame; 412. Lower clamping frame; 413. Second cylinder; 414. Limit guiding component; 42. Linkage type self-sealing cover component; 421. Third cylinder; 422. Linkage push plate; 423. Telescopic linkage rod; 424. Linkage slide bar; 425. Flap push plate; 426. Rotating rod; 427. Torsion spring; 428. Rotating cover; 429. Second air pressure detection component; 5. Station conversion component; 51. Third motor; 52. Driving gear; 53. Driven gear; 54. Turntable; 55. Card slot. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] The present invention will be further described below with reference to the embodiments.

[0036] In some embodiments, please refer to the attached drawings of the specification Figures 1-8 A leak detection device capable of detecting various deformation states of an expansion joint includes a support box body 1;

[0037] A station conversion component 5 for converting the station of the expansion joint is connected to the middle of the upper end of the support box body 1;

[0038] A linkage type loading and unloading component 2 for simultaneously loading and unloading the station conversion component 5 is connected to the front end and the right end of the station conversion component 5, and the lower end of the linkage type loading and unloading component 2 is fixedly connected to the top of the support box body 1;

[0039] On the top plate of the support box body 1 at the rear end of the station conversion assembly 5, a self-sealing cover type stretching leak detection assembly 4 is connected, which can automatically seal the expansion joint and perform stretching leak detection;

[0040] At the left end of the support box body 1, an extrusion leak detection assembly 3 is connected for bending and extruding the expansion joint for leak detection;

[0041] The self-sealing cover type stretching leak detection assembly 4 includes a clamping and stretching assembly 41 and a linkage self-sealing cover assembly 42. The clamping and stretching assembly 41 is slidably connected to the top plate of the support box body 1 at the rear end of the station conversion assembly 5. The rear end of the clamping and stretching assembly 41 is connected to the linkage self-sealing cover assembly 42, and the bottom of the linkage self-sealing cover assembly 42 is fixedly connected to the top of the support box body 1;

[0042] The clamping and stretching assembly 41 includes an upper clamping frame 411, a lower clamping frame 412, a second cylinder 413, and a limit guiding assembly 414. The upper clamping frame 411 is slidably connected to the top plate of the support box body 1 at the rear end of the station conversion assembly 5. The top of the upper clamping frame 411 is fixedly connected to the second cylinder 413 and the limit guiding assembly 414. The output end of the second cylinder 413 and the top of the limit guiding assembly 414 are fixedly connected to the lower clamping frame 412;

[0043] The linkage self-sealing cover assembly 42 includes a third cylinder 421, a linkage push plate 422, a telescopic linkage rod 423, a linkage sliding rod 424, a flap push plate 425, a rotating rod 426, a torsion spring 427, a rotating cover 428, and a second air pressure detection assembly 429. The third cylinder 421 is fixedly connected to the top plate of the support box body 1 on the right side of the upper clamping frame 411. Linkage sliding rods 424 are slidably connected to the left and right ends of the inner bottom of the upper clamping frame 411 and the top of the lower clamping frame 412. The right ends of adjacent groups of linkage sliding rods 424 are fixedly connected to the linkage push plate 422. A telescopic linkage rod 423 is fixedly connected between the two groups of linkage push plates 422. The right end of the lower group of linkage push plates 422 is fixedly connected to the output end of the third cylinder 421. The left ends of adjacent groups of linkage sliding rods 424 are fixedly connected to the flap push plate 425. Rotating rods 426 are fixedly connected between the left and right inner walls of the upper clamping frame 411 and the lower clamping frame 412. Torsion springs 427 are fixedly connected to the middle of the rotating rods 426. The outer ends of the torsion springs 427 are fixedly connected to the rotating covers 428. The ends of the rotating covers 428 close to each other are respectively inserted into the upper and lower ends of the expansion joint. The flap push plate 425 is slidably connected to the rotating cover 428. The top of the front end of the lower group of rotating covers 428 is fixedly connected to the second air pressure detection assembly 429;

[0044] When the station conversion component 5 drives the expansion joint to move in front of the upper clamping frame 411 and the lower clamping frame 412, the third cylinder 421 is started. The third cylinder 421 drives the lower set of linkage push plates 422 to move forward. The lower set of linkage push plates 422 drives the upper set to move forward synchronously through the telescopic linkage rod 423. At this time, the rotating cover 428 is in a vertical state under the limit of the flip cover push plate 425. At this time, the linkage push plates 422 drive the rotating cover 428 to move forward through the linkage slide rod 424 and the flip cover push plate 425. The rotating cover 428 drives the upper clamping frame 411 and the lower clamping frame 412 to move forward through the rotating rod 426 and the torsion spring 427. The upper clamping frame 411 and the lower clamping frame 412 move forward and clamp the upper and lower ends of the expansion joint. When the upper clamping frame 411 and the lower clamping frame 412 move to the frontmost end, the linkage push plates 422 continue to drive the linkage slide rod 424 and the flip cover push plate 425 to move forward. At this time, the flip cover push plate 425 moves forward to drive the rotating cover 428 to rotate in the direction of approaching each other. At this time, the rotating cover 428 drives the torsion spring 427 to move and causes the torsion spring 427 to deform. When the rotating cover 428 rotates to the end where they approach each other and is clamped at the upper and lower ends of the expansion joint, the third cylinder 421 is stopped and operated. At this time, the second air pressure detection component 429 is located inside the expansion joint. When both the upper and lower ends of the expansion joint are blocked, the second cylinder 413 is started. The second cylinder 413 drives the lower clamping frame 412 to move upward under the limit and guidance of the limit guiding component 414. The lower clamping frame 412 drives the upper set of linkage push plates 422 to move upward under the limit and guidance of the telescopic linkage rod 423 through the linkage slide rod 424. The lower clamping frame 412 drives the upper end of the expansion joint to move upward, thereby stretching the expansion joint. At this time, the internal air pressure of the expansion joint is detected by the second air pressure detection component 429. By observing the change of the internal air pressure of the expansion joint, it is inferred whether the expansion joint leaks in the tensile deformation state, so that the leak detection of the expansion joint is more perfect and specific. When the detection is completed, the second cylinder 413 is started to make the lower clamping frame 412 return to its original position. At this time, the third cylinder 421 is started. The third cylinder 421 drives the linkage push plates 422 to move backward. When the flip cover push plate 425 moves to the side where it is separated from the mutually separated side of the rotating cover 428, due to the restoring force of the torsion spring 427, the torsion spring 427 drives the rotating cover 428 to rotate in the direction of moving away from each other. At this time, the linkage push plates 422 continue to move backward. The linkage push plates 422 drive the upper clamping frame 411 and the lower clamping frame 412 to move backward through the linkage slide rod 424 and the flip cover push plate 425, thereby completing the separation from the expansion joint.

[0045] The extrusion leak detection component 3 includes a pressing and blocking component 31 and a bending and extrusion leak detection component 32. The left end of the support box body 1 is connected with the pressing and blocking component 31, and the upper end of the pressing and blocking component 31 is fixedly connected with the bending and extrusion leak detection component 32;

[0046] The pressing and sealing assembly 31 includes a supporting vertical plate 311, a supporting horizontal plate 312, a second motor 313, a second threaded rod 314, a lower cover 315, a first air pressure detection assembly 316 and a limiting sliding rod 317. A supporting vertical plate 311 is fixedly connected to the left end of the supporting box body 1. A supporting horizontal plate 312 is fixedly connected to the upper end of the supporting vertical plate 311. A second motor 313 is fixedly connected to the top of the supporting horizontal plate 312. The output end of the second motor 313 passes through the supporting horizontal plate 312 and is fixedly connected to a second threaded rod 314. The lower end of the second threaded rod 314 passes through the lower cover 315 and is rotatably connected to the left end of the supporting box body 1. The second threaded rod 314 is threadedly connected to the lower cover 315. Limiting sliding rods 317 are fixedly connected to the bottom of the supporting horizontal plate 312 on both the front and rear sides of the second threaded rod 314. The limiting sliding rods 317 all pass through the left end of the lower cover 315 and are slidably connected to the lower cover 315. The bottoms of the limiting sliding rods 317 are fixedly connected to the left end of the supporting box body 1. A first air pressure detection assembly 316 is fixedly connected to the top of the right end of the lower cover 315;

[0047] The bending and extrusion leak detection assembly 32 includes a first cylinder 321, an upper cover 322, an adjustment chute 323 and a downward pressing slider 324. A set of first cylinders 321 are fixedly connected to both the front and rear sides of the bottom of the right end of the supporting horizontal plate 312. The output ends of the first cylinders 321 are rotatably connected to a downward pressing slider 324 through a hinge seat. An adjustment chute 323 is opened at the upper end of the upper cover 322. The two groups of downward pressing sliders 324 are respectively slidably connected to the inside of the front and rear ends of the adjustment chute 323;

[0048] When the expansion joint is transported between the upper cover 322 and the lower cover 315 through the station conversion component 5, the second motor 313 is started. Driven by the support vertical plate 311 and the support horizontal plate 312, the second motor 313 drives the second threaded rod 314 to rotate. The second threaded rod 314 drives the lower cover 315 to move upward under the limit guidance of the limit slide rod 317. The lower cover 315 drives the first air pressure detection component 316 to move upward and block the lower end of the expansion joint. At this time, the first air pressure detection component 316 is located inside the expansion joint. At the same time, two groups of first cylinders 321 are started. The output end of the first cylinder 321 drives the upper cover 322 to move downward through the downward pressure slider 324. The upper cover 322 moves downward and blocks the upper end of the expansion joint. The first cylinder 321 continues to operate. The two groups of first cylinders 321 continue to drive the upper cover 322 to move downward. The upper cover 322 moves downward and squeezes the expansion joint, so that the expansion joint undergoes compressive deformation. At this time, the first air pressure detection component 316 detects the air pressure inside the expansion joint. By detecting the change of the air pressure inside the expansion joint, it is confirmed whether the expansion joint leaks, so as to detect whether the expansion joint leaks under vertical compressive deformation. When the detection is completed, one of the first cylinders 321 is started. The output end of this first cylinder 321 drives one end of the upper cover 322 to move upward through the downward pressure slider 324. At this time, since the other group of first cylinders 321 does not operate, the other end of the upper cover 322 is not moved under the restraint of the other group of first cylinders 321, so that the expansion joint undergoes bending deformation. At this time, the first air pressure detection component 316 detects the air pressure inside the expansion joint, so as to detect whether the expansion joint leaks at this time, thus realizing leak detection when the expansion joint undergoes vertical compressive deformation and bending deformation, making the detection of the expansion joint more comprehensive and specific.

[0049] In some embodiments, as Figures 1-7 shown, the linkage type loading and unloading component 2 includes a linkage type unloading component 21 and a linkage type loading component 22. The front end of the station conversion component 5 is connected with the linkage type unloading component 21. The lower end of the linkage type unloading component 21 is connected to the top plate of the support box body 1. The right end of the station conversion component 5 is connected with the linkage type loading component 22. The bottom of the linkage type loading component 22 is fixedly connected to the top plate of the support box body 1;

[0050] The linkage blanking component 21 includes a first motor 211, a first threaded rod 212, a blanking slider 213, a blanking slider 214, a first spring 215, a linkage rope 216, and a steering wheel 217. A notch is provided on the support box 1 below the front end of the station conversion component 5. The front side wall of the support box 1 at the front end of the notch is fixedly connected with a first motor 211. The output end of the first motor 211 passes through the front side wall of the support box 1 and is fixedly connected with a first threaded rod 212. The rear end of the first threaded rod 212 is rotatably connected to the rear side wall of the notch. The first threaded rod 212 passes through the lower end of the blanking slider 213 and is threadedly connected to the blanking slider 213. The left and right ends of the blanking slider 213 are slidably connected to the top plate of the support box 1 through slide rails and sliders. The blanking slider 214 passes through the front end of the blanking slider 213 and is slidably connected to the blanking slider 213. The rear side of the upper end of the blanking slider 213 is beveled. A retaining piece is fixedly connected to the bottom of the blanking slider 213. A first spring 215 is fixedly connected between the retaining piece and the blanking slider 213. A linkage rope 216 is fixedly connected to the rear side wall of the blanking slider 213. A steering wheel 217 is rotatably connected to the top plate of the support box 1 behind the blanking slider 213. The linkage rope 216 bypasses the steering wheel 217 and is in rolling connection with the steering wheel 217;

[0051] The linkage feeding component 22 includes a feeding trough 221, a limiting chute 222, a reset pull rod 223, a second spring 224, a feeding push block 225, and a feeding port 226. The top of the support box 1 to the right of the station conversion component 5 is fixedly connected with a feeding trough 221. A limiting chute 222 is provided at the upper end of the feeding trough 221. The upper feeding push block 225 is slidably connected inside the limiting chute 222. The left side wall of the lower end of the feeding push block 225 is fixedly connected to the other end of the linkage rope 216. The right side wall of the lower end of the feeding push block 225 is fixedly connected with a reset pull rod 223. The reset pull rod 223 passes through the right side wall of the feeding trough 221 and is slidably connected to the feeding trough 221. A retaining piece is fixedly connected to the right end of the reset pull rod 223. A second spring 224 is fixedly connected between the retaining piece and the feeding trough 221. The second spring 224 wraps the right end of the feeding trough 221. The front end of the feeding trough 221 is fixedly connected with a feeding port 226 communicating with the limiting chute 222. When the feeding push block 225 is located on the right side of the feeding port 226, the upper end of the blanking slider 214 is in contact connection with the upper end of the station conversion component 5;

[0052] When feeding and discharging are required, the first motor 211 is started. The output end of the first motor 211 drives the first threaded rod 212 to rotate. The first threaded rod 212 drives the blanking slider 213 to slide forward. When the blanking slider 213 drives the blanking slider 214 to slide out of the station conversion component 5 and be located below the lower end opening of the expansion joint, under the restoring force of the first spring 215, the first spring 215 drives the blanking slider 214 to move upward. At this time, the blanking slider 213 continues to move forward, so that the blanking slider 214 contacts the front end of the inner wall of the expansion joint and drives the expansion joint to move forward. When the expansion joint moves away from the station conversion component 5, the expansion joint can be removed, thus realizing the discharging of the expansion joint. When the blanking slider 213 moves forward, the blanking slider 213 drives the feeding push block 225 to move through the linkage rope 216 and the steering wheel 217. The feeding push block 225 drives the expansion joint to move leftward under the limiting and guiding of the feeding groove 221 and the limiting chute 222 and is clamped on the station conversion component 5. At this time, the feeding push block 225 drives the reset pull rod 223 to move leftward. The reset pull rod 223 drives the second spring 224 to be compressed and deformed. When the feeding is completed, the first motor 211 is started. The first motor 211 drives the blanking slider 213 to move backward. The blanking slider 213 drives the blanking slider 214 to move to contact the station conversion component 5. Since the upper end of the blanking slider 214 is a slope, the blanking slider 214 is extruded by the station conversion component 5 and moves downward. At this time, the first spring 215 is stretched and deformed. When the first spring 215 moves to contact the top of the first spring 215 with the station conversion component 5, the first motor 211 is stopped. Since the blanking slider 213 moves backward, the reset pull rod 223 moves rightward under the restoring force of the second spring 224. The limiting chute 222 drives the feeding push block 225 to move rightward, so that the feeding push block 225 moves to the right side of the feeding port 226. At this time, the station conversion component 5 is started. The station conversion component 5 changes the station, so that feeding and discharging can be carried out on the new station, and thus feeding and discharging of the expansion joint on the station conversion component 5 are realized simultaneously, and feeding and discharging are interlocked with each other, so that only one set of the first motor 211 can realize simultaneous feeding and discharging, with simple operation and cost saving.

[0053] In some embodiments, as Figures 1-7 shown, the station conversion component 5 includes a third motor 51, a driving gear 52, a driven gear 53, a turntable 54 and a card slot 55. The middle part of the upper end of the support box body 1 is fixedly connected with a third motor 51. The output end of the third motor 51 is fixedly connected with a driving gear 52. The outer end of the driving gear 52 is meshed and connected with a driven gear 53. The middle part of the driven gear 53 is fixedly connected with a rotating shaft. The rotating shaft passes through the top plate of the support box body 1 and is fixedly connected with a turntable 54. The rotating shaft is rotatably connected with the top plate of the support box body 1. A plurality of groups of card slots 55 are equidistantly arranged at the outer end of the turntable 54;

[0054] When it is necessary to transfer the expansion joint to a different working station, the expansion joint is transported into the inner part of the clamping groove 55 through the extrusion leak detection component 3. Then, the third motor 51 is started. The output end of the third motor 51 drives the driving gear 52 to rotate, the driving gear 52 drives the driven gear 53 to rotate, and the driven gear 53 drives the turntable 54 to rotate through the rotating shaft. The turntable 54 drives all the clamping grooves 55 to change the working station, thus realizing the cyclic conveying of the expansion joint at each working station.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A leak detection device capable of detecting various deformation states of an expansion joint, comprising a support box (1), characterized in that: A workstation conversion assembly (5) for converting the workstation of the expansion joint is connected to the middle portion of the upper end of the support box (1); The front end and right end of the workstation conversion assembly (5) are connected to a linkage loading and unloading assembly (2) for simultaneously loading and unloading materials on the workstation conversion assembly (5); the lower end of the linkage loading and unloading assembly (2) is fixedly connected to the top of the supporting box (1); A self-sealing stretching leak detection component (4) capable of automatically sealing the expansion joint and performing stretching leak detection is connected to the top plate of the supporting box (1) at the rear end of the workstation conversion component (5); The left end of the supporting box (1) is connected to an extrusion leak detection assembly (3) for performing bending and extrusion leak detection on the expansion joint; The self-sealing stretching leak detection assembly (4) comprises a clamping stretching assembly (41) and a linkage self-sealing assembly (42); the clamping stretching assembly (41) is slidably connected to the top plate of the supporting box (1) at the rear end of the station conversion assembly (5); the rear end of the clamping stretching assembly (41) is connected to the linkage self-sealing assembly (42); and the bottom of the linkage self-sealing assembly (42) is fixedly connected to the top of the supporting box (1); The extrusion leak detection assembly (3) comprises a compression and plugging assembly (31) and a bending and extrusion leak detection assembly (32); the left end of the support box (1) is connected to the compression and plugging assembly (31), and the upper end of the compression and plugging assembly (31) is fixedly connected to the bending and extrusion leak detection assembly (32); The clamping and stretching assembly (41) comprises an upper clamping frame (411), a lower clamping frame (412), a second cylinder (413) and a position limiting guide assembly (414); the upper clamping frame (411) is slidably connected to the top plate of the supporting box (1) at the rear end of the workstation conversion assembly (5); the top of the upper clamping frame (411) is fixedly connected to the second cylinder (413) and the position limiting guide assembly (414); the output end of the second cylinder (413) and the top of the position limiting guide assembly (414) are fixedly connected to the lower clamping frame (412); The linkage self-sealing cover assembly (42) comprises a third cylinder (421), a linkage push plate (422), a telescopic linkage rod (423), a linkage slide rod (424), a flip cover push plate (425), a rotating rod (426), a torsion spring (427), a rotating cover (428) and a second air pressure detection assembly (429). The third cylinder (421) is fixedly connected to the top plate of the supporting box (1) on the right side of the upper clamping frame (411). The left and right ends of the inner bottom of the upper clamping frame (411) and the left and right ends of the top of the lower clamping frame (412) are both slidably connected to the linkage slide rod (424). The right ends of two adjacent groups of linkage slide rods (424) are fixedly connected to the linkage push plate (422). A telescopic linkage rod (424) is fixedly connected between the two groups of linkage push plates (422). 423), the right end of the lower group of linkage push plates (422) is fixedly connected to the output end of the third cylinder (421), the left ends of the two adjacent groups of linkage slide bars (424) are fixedly connected to the flip cover push plates (425), the left and right inner walls of the upper clamping frame (411) and the lower clamping frame (412) are fixedly connected to the rotating rods (426), the middle parts of the rotating rods (426) are fixedly connected to the torsion springs (427), the outer ends of the torsion springs (427) are fixedly connected to the rotating covers (428), the ends of the rotating covers (428) close to each other are respectively plugged into the upper and lower ends of the expansion joint, the flip cover push plates (425) are slidably connected to the rotating covers (428), and the front end top of the lower group of rotating covers (428) is fixedly connected to the second air pressure detection assembly (429).

2. The leak detection device capable of detecting various deformation states of an expansion joint according to claim 1, characterized in that: The pressing and blocking assembly (31) comprises a supporting vertical plate (311), a supporting horizontal plate (312), a second motor (313), a second threaded rod (314), a lower sealing cover (315), a first air pressure detection assembly (316) and a limiting sliding rod (317); the left end of the supporting box (1) is fixedly connected to the supporting vertical plate (311); the upper end of the supporting vertical plate (311) is fixedly connected to the supporting horizontal plate (312); the top of the supporting horizontal plate (312) is fixedly connected to the second motor (313); and the output end of the second motor (313) passes through the supporting horizontal plate (312) and is fixedly connected to the second threaded rod (314). The lower end of the second threaded rod (314) passes through the lower cover (315) and is rotatably connected to the left end of the support box (1). The second threaded rod (314) is threadedly connected to the lower cover (315). The bottoms of the support cross plates (312) on the front and rear sides of the second threaded rod (314) are fixedly connected to limit slide bars (317). The limit slide bars (317) pass through the left end of the lower cover (315) and are slidably connected to the lower cover (315). The bottoms of the limit slide bars (317) are fixedly connected to the left end of the support box (1). The top of the right end of the lower cover (315) is fixedly connected to a first air pressure detection assembly (316).

3. The leak detection device capable of detecting various deformation states of an expansion joint according to claim 2, characterized in that: The bending and extrusion leak detection assembly (32) comprises a first cylinder (321), an upper cover (322), an adjustment slide groove (323) and a pressing slider (324); a group of first cylinders (321) are fixedly connected to both front and rear sides of the bottom right end of the supporting cross plate (312); the output ends of the first cylinders (321) are rotatably connected to the pressing slider (324) via a hinge seat; an adjustment slide groove (323) is provided at the upper end of the upper cover (322); and two groups of pressing sliders (324) are slidably connected to the inside of the front and rear ends of the adjustment slide groove (323), respectively.

4. The leak detection device capable of detecting various deformation states of an expansion joint according to claim 1, characterized in that: The linkage loading and unloading assembly (2) comprises a linkage loading and unloading assembly (21) and a linkage loading and unloading assembly (22); the front end of the station conversion assembly (5) is connected to the linkage loading and unloading assembly (21); the lower end of the linkage loading and unloading assembly (21) is connected to the top plate of the support box (1); the right end of the station conversion assembly (5) is connected to the linkage loading and unloading assembly (22); and the bottom of the linkage loading and unloading assembly (22) is fixedly connected to the top plate of the support box (1).

5. The leak detection device capable of detecting various deformation states of an expansion joint according to claim 4, characterized in that: The linkage type material removal assembly (21) comprises a first motor (211), a first threaded rod (212), a material removal slider (213), a material removal slider (214), a first spring (215), a linkage rope (216) and a direction-adjusting rotating wheel (217); a slot is provided on the support box (1) below the front end of the workstation conversion assembly (5); the first motor (211) is fixedly connected to the front side wall of the support box (1) at the front end of the slot; the output end of the first motor (211) passes through the front side wall of the support box (1) and is fixedly connected to the first threaded rod (212); the rear end of the first threaded rod (212) is rotatably connected to the rear side wall of the slot; the first threaded rod (212) passes through the lower end of the material removal slider (213) and is connected to the material removal slider (213). The material removal slider (213) is threadedly connected, and both left and right ends of the material removal slider (213) are slidably connected to the top plate of the support box (1) through the slide rail slider. The material removal slider (214) passes through the front end of the material removal slider (213) and is slidably connected to the material removal slider (213). The rear side of the upper end of the material removal slider (213) is an inclined surface. The bottom of the material removal slider (213) is fixedly connected with a baffle. A first spring (215) is fixedly connected between the baffle and the material removal slider (213). A linkage rope (216) is fixedly connected to the rear side wall of the material removal slider (213). A steering wheel (217) is rotatably connected to the top plate of the support box (1) behind the material removal slider (213). The linkage rope (216) passes around the steering wheel (217) and is rollingly connected to the steering wheel (217).

6. The leak detection device capable of detecting various deformation states of an expansion joint according to claim 5, characterized in that: The linkage type feeding assembly (22) comprises a feeding trough (221), a limiting chute (222), a reset rod (223), a second spring (224), a feeding push block (225) and a feeding port (226); the top of the supporting box (1) on the right side of the station conversion assembly (5) is fixedly connected to the feeding trough (221); a limiting chute (222) is provided at the upper end of the feeding trough (221); the inner part of the limiting chute (222) is slidably connected to the right feeding push block (225); the left side wall at the lower end of the feeding push block (225) is fixedly connected to the other end of the linkage rope (216); the right side wall at the lower end of the feeding push block (225) is fixedly connected to the other end of the linkage rope (216); A reset rod (223) is provided, the reset rod (223) passes through the right side wall of the loading trough (221) and is slidably connected to the loading trough (221), a baffle is fixedly connected to the right end of the reset rod (223), a second spring (224) is fixedly connected between the baffle and the loading trough (221), the second spring (224) wraps the right end of the loading trough (221), and a feeding port (226) connected to the limiting slide groove (222) is fixedly connected to the front end of the loading trough (221), and when the loading push block (225) is located on the right side of the feeding port (226), the upper end of the unloading slide block (214) is in contact with the upper end of the station conversion component (5).

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