Welding seam detection device for electromechanical equipment

Abstract

The invention provides a weld joint detection device for electromechanical equipment, and relates to the technical field of ultrasonic detection.The detection device body comprises a detection table, a supporting frame, a cleaning mechanism and a coupling agent conveying assembly, end plates are welded to the two ends of the surface of the detection table, and a first motor is screwed to the outer side of one end plate; a first motor is arranged at the bottom of the detection table, a lead screw is inserted into the output end of the first motor, the surface of the lead screw is sleeved with a threaded sleeve, the threaded sleeve is welded to the surface of the supporting frame, and a lifting groove is formed in the bottom of the detection table. The detection range of different types of problems generated in the weld joint area is further expanded, the coupling agent is automatically coated according to the moving speed and distance, manual operation is not needed in the process, coating is more uniform and effective, the difficulty is reduced, and the actual coating range of the coupling agent can be adjusted and controlled according to the actual width of the weld joint to be detected.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic detection, and specifically to a device for detecting welds of electromechanical equipment. Background Art

[0002] Detecting the welds of electromechanical equipment can ensure the structural safety and operation reliability of the equipment. As a key part for the equipment to bear force and seal, the quality of the weld directly affects the overall mechanical performance. Detection can identify defects such as cracks, pores, and lack of fusion, which can avoid structural failures or leakage accidents caused by stress concentration. At the same time, it can verify whether the welding process is qualified and meets the industry safety standards. Through non-destructive testing and other technical means, it can not only prevent potential safety hazards, but also extend the service life of the equipment, reduce the economic losses caused by unplanned shutdowns, and provide a scientific basis for the full life cycle management of the equipment.

[0003] In the prior art, the solutions for detecting the welds of electromechanical equipment include the form of ultrasonic detection. However, in this detection process, since the ultrasonic probe needs to be moved along the surface of the workpiece coated with the coupling agent, the protrusions, metal slag or concave areas generated in some welding areas will cause uneven coating of the coupling agent, resulting in voids at the bottom of the ultrasonic probe, which will damage the integrity of the final ultrasonic probe imaging. On the other hand, for the coating process of the coupling agent, the manual coating method has a high difficulty, is time-consuming and laborious, and is also prone to uneven coating. While the automated coating cannot be flexibly adjusted according to the actual width of the weld. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a device for detecting welds of electromechanical equipment to solve the problems proposed in the above background art. The present invention can directly detect when there are large-degree depressions on the weld surface, further expanding the detection range of different types of problems generated in the weld area. It automatically coats the coupling agent according to the moving speed and distance. This process does not require manual operation, the coating is more uniform and effective, reduces the difficulty, and can adjust the actual coating range of the coupling agent according to the actual width of the weld to be detected.

[0005] To achieve the above object, the present invention is realized by the following technical solutions: A weld detection device for electromechanical equipment, including a detection device body, the detection device body includes a detection table, a support frame, a cleaning mechanism and a coupling agent conveying component. End plates are welded at both ends of the surface of the detection table. A first motor is screwed on the outside of one of the end plates. A lead screw is inserted into the output end of the first motor. A threaded sleeve is sleeved on the surface of the lead screw. The threaded sleeve is welded on the surface of the support frame. A lifting groove is opened at the bottom of the detection table. A lifting plate is installed on the surface of the detection table. A slag removal frame is arranged at one end of the support frame. A grinding plate is installed inside the slag removal frame. A detection frame is integrally formed at the other end of the support frame. A connecting column is inserted into the bottom of the detection frame. An ultrasonic probe is screwed at the bottom of the connecting column. A coupling agent conveying component is installed at the middle bottom of the support frame. The bottoms of the ultrasonic probe, the cleaning mechanism and the coupling agent conveying component are all used to press on the surface of the weld to be detected.

[0006] Further, a column is integrally formed at the middle bottom of the support frame. The coupling agent conveying component includes a coupling agent tank and a coating mechanism. The end of the lead screw is embedded into the end plate through a bearing. A top plate is integrally formed at the top of the slag removal frame.

[0007] Further, an electric lifting rod is screwed inside the lifting groove. The bottom surface of the lifting plate is screwed at the top end of the electric lifting rod. The lifting plate is used to jack up the workpiece to be detected. Saw blades are arranged at the edges of the grinding plate.

[0008] Further, the cleaning mechanism includes a grinding plate, a second motor and a slag removal frame. A second motor and an air pump are screwed on the surface of the top plate. A drive shaft is inserted into the output end of the second motor. The grinding plate is installed at the end of the drive shaft. The inside of the slag removal frame is divided into a slag removal interlayer and a diversion interlayer.

[0009] Further, a partition board is arranged between the slag removal interlayer and the diversion interlayer. A collection port is opened at one side of the bottom of the slag removal interlayer. The collection port is integrally in an arc structure. One end of the air pump is connected to the inside of the slag removal interlayer through a pipeline. And the air pump is used to suck the residue collected at the bottom of the slag removal interlayer upwards.

[0010] Further, the bottom of the partition board directly presses on the weld to be detected. An elastic film and a support plate are attached to the inner wall of the diversion interlayer. The elastic film is arranged at the top end of the support plate. Conductive contacts are attached to the surface of the support plate and the bottom of the elastic film.

[0011] Further, the coating mechanism includes a coating roller and a baffle. A plurality of through holes are formed on the surface of the coating roller. The baffle is integrally embedded inside the coating roller, and support rings are sleeved at both ends of the coating roller. The side of the support ring is fixed on the surface of the slag removal frame. A threaded column is welded in the middle of the baffle, and a bottom clamping plate is integrally formed on the surface of the threaded column.

[0012] Further, threaded holes are formed at both ends of the coating roller, and the threaded column passes through the inside of the threaded hole. The number of the threaded columns and the baffles is two, and the top of the coating roller abuts against the bottom end of the coupling agent tank.

[0013] Further, the coupling agent tank is integrally formed at the bottom of the column. An injection port is formed on the surface of the coupling agent tank. An arc-shaped groove is integrally formed at the bottom end of the inner wall of the coupling agent tank, and a docking hole is formed at the bottom of the arc-shaped groove.

[0014] Further, sealing columns are inserted at both ends of the coupling agent tank. A top clamping plate is integrally formed at the end of the sealing column. A linkage plate is sleeved inside the top clamping plate. A sleeve ring is integrally formed at the bottom of the linkage plate. The sleeve ring is sleeved inside the bottom clamping plate. The sealing column is embedded inside the arc-shaped groove, and the sealing column is used to block the docking hole.

[0015] Advantages of the present invention: 1. The weld detection device for electromechanical equipment controls the entire support frame to move horizontally along the surface of the workpiece to be measured through the first motor at the top. During the movement, the weld area to be measured can be pre-ground to remove metal slag and convex structures on the weld surface, thereby improving the accuracy of the subsequent ultrasonic probe detection structure. This process can also directly collect and discharge the residues generated by grinding, and can directly detect when there is a large depression on the weld surface, further expanding the detection range for different problems occurring in the weld area.

[0016] 2. The weld detection device for electromechanical equipment is equipped with a coupling agent conveying component in the middle of the support frame. Through the rollable coating mechanism in this component, the coupling agent can be automatically coated during the movement along the surface of the workpiece to be measured according to the moving speed and distance. This process does not require manual operation, the coating is more uniform and effective, and the difficulty is reduced.

[0017] 3. When the coating mechanism of the weld detection device for electromechanical equipment is controlled to apply the coupling agent, it can also adjust the actual coating range of the coupling agent according to the actual width of the weld to be measured, so as to improve the utilization rate of the coupling agent for welds of different widths. This process can also synchronously link the width range injected into the top coupling agent tank to ensure high efficiency in transporting the coupling agent in the coupling agent tank to the inside of the coating mechanism, and it will not cause a large amount of coupling agent to overflow to the outside of the weld either. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a schematic structural diagram of the external shape of a weld detection device for electromechanical equipment according to the present invention; Figure 2 FIG. 2 is a schematic structural diagram of the support frame part of the present invention; Figure 3 FIG. 3 is a schematic structural diagram of the coupling agent conveying assembly part of the present invention; Figure 4 FIG. 4 is an exploded view of the coating mechanism of the present invention; Figure 5 FIG. 5 is a cross-sectional view of the end of the coupling agent tank of the present invention; Figure 6 FIG. 6 is a schematic structural diagram of the slag removal frame part of the present invention; Figure 7 FIG. 7 is an internal cross-sectional view of the slag removal frame of the present invention; In the figure: 1. Detection table; 2. Lifting groove; 3. Lifting plate; 4. End plate; 5. Support frame; 6. Cleaning mechanism; 7. Coupling agent conveying assembly; 8. First motor; 9. Lead screw; 10. Top plate; 11. Slag removal frame; 12. Detection frame; 13. Slag removal interlayer; 14. Diversion interlayer; 15. Column; 16. Coupling agent tank; 17. Coating mechanism; 18. Threaded sleeve; 19. Connecting column; 20. Ultrasonic probe; 21. Coating roller; 22. Through hole; 23. Threaded column; 24. Bottom clamping plate; 25. Baffle; 26. Injection port; 27. Arc groove; 28. Docking hole; 29. Sealing column; 30. Top clamping plate; 31. Linking plate; 32. Collar; 33. Second motor; 34. Driving shaft; 35. Grinding plate; 36. Air pump; 37. Collection port; 38. Elastic membrane; 39. Support plate; 40. Conductive contact; 41. Partition; 42. Support ring. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] Please refer to Figures 1 to 7, the present invention provides the following technical solution: A weld detection device for electromechanical equipment, including a detection device body. The detection device body includes a detection table 1, a support frame 5, a cleaning mechanism 6, and a couplant delivery assembly 7. End plates 4 are welded to both ends of the surface of the detection table 1. A first motor 8 is screwed to the outside of one of the end plates 4. A lead screw 9 is inserted into the output end of the first motor 8. A threaded sleeve 18 is sleeved on the surface of the lead screw 9. The threaded sleeve 18 is welded to the surface of the support frame 5. A lifting groove 2 is opened at the bottom of the detection table 1. A lifting plate 3 is installed on the surface of the detection table 1. A slag removal frame 11 is provided at one end of the support frame 5. A grinding plate 35 is installed inside the slag removal frame 11. A detection frame 12 is integrally formed at the other end of the support frame 5. A connecting column 19 is inserted into the bottom of the detection frame 12. A ultrasonic probe 20 is screwed to the bottom of the connecting column 19. A couplant delivery assembly 7 is installed at the middle bottom of the support frame 5. The bottom of the ultrasonic probe 20, the bottom of the cleaning mechanism 6, and the bottom of the couplant delivery assembly 7 are all used to press on the surface of the weld to be measured. This weld detection device is used to detect the flat weld area on the surface of plate-like workpieces in electromechanical equipment by using ultrasonic waves.

[0021] When the present invention is used, place the workpiece to be measured on the surface of the lifting plate 3. After starting the electric lifting rod at the bottom, the lifting plate 3 together with the workpiece placed on the surface can be jacked up until it abuts against the bottom of the support frame 5. With the help of the grinding plate 35, the cleaning mechanism 6, the couplant delivery assembly 7, and the ultrasonic probe 20 pressing on the weld surface of the workpiece to be measured, then start the first motor 8. Drive the lead screw 9 to rotate through the first motor 8, and then control the entire support frame 5 to move along the surface of the weld to be measured. Use the cleaning mechanism 6 to pre-grind and clean the weld in the moved area, and use the slag removal frame 11 to remove the debris generated by grinding. Then, apply the couplant solution to the surface of the weld to be measured through the couplant delivery assembly 7. Finally, the detection of the weld area can be completed through the ultrasonic probe 20. During this process, whether there is a depression in the weld area will also be detected by part of the slag removal frame 11.

[0022] In this embodiment, a column 15 is integrally formed at the middle bottom of the support frame 5. The couplant delivery assembly 7 includes a couplant tank 16 and an application mechanism 17. The end of the lead screw 9 is embedded in the end plate 4 through a bearing. A top plate 10 is integrally formed at the top of the slag removal frame 11. An electric lifting rod is screwed in the lifting groove 2. The bottom surface of the lifting plate 3 is screwed to the top end of the electric lifting rod. The lifting plate 3 is used to jack up the workpiece to be measured. Saw blades are provided at the edges of the grinding plate 35.

[0023] Specifically, after the first motor 8 is started, the first motor 8 drives the lead screw 9 to rotate. Since the top of the support frame 5 is sleeved on the surface of the lead screw 9 through two threaded sleeves 18, the entire support frame 5 can be directly driven to move horizontally, so that the slag removal frames 11 and the detection frames 12 at both ends of the support frame 5 can move along the linear weld. During the movement, pre-grinding is completed by means of the grinding plate 35, coupling agent coating is completed by means of the coupling agent delivery assembly 7, and the detection of the weld is completed by means of the ultrasonic probe 20.

[0024] In this embodiment, the cleaning mechanism 6 includes a grinding plate 35, a second motor 33 and a slag removal frame 11. A second motor 33 and an air pump 36 are screwed on the surface of the top plate 10. The output end of the second motor 33 is inserted with a drive shaft 34. The grinding plate 35 is installed at the end of the drive shaft 34. The inside of the slag removal frame 11 is divided into a slag removal layer 13 and a diversion layer 14. A partition plate 41 is arranged between the slag removal layer 13 and the diversion layer 14. A collection port 37 is opened on one side of the bottom of the slag removal layer 13. The collection port 37 is integrally in an arc structure. One end of the air pump 36 is connected to the inside of the slag removal layer 13 through a pipeline, and the air pump 36 is used to suck the slag collected at the bottom of the slag removal layer 13 upward. The bottom of the partition plate 41 is directly pressed on the weld to be measured. An elastic film 38 and a support plate 39 are attached to the inner wall of the diversion layer 14. The elastic film 38 is arranged at the top of the support plate 39. Conductive contacts 40 are attached to the surface of the support plate 39 and the bottom of the elastic film 38. The entire support frame 5 is controlled by the first motor 8 at the top to move horizontally along the surface of the workpiece to be measured. During the movement, the area of the weld to be measured can be pre-ground to remove the metal slag and convex structures on the surface of the weld, thereby improving the accuracy of the detection structure of the subsequent ultrasonic probe 20. This process can also directly collect and discharge the slag generated by grinding, and can directly detect when there is a large depression on the surface of the weld, further expanding the scope of detection of different problems generated in the weld area.

[0025] Specifically, after starting the second motor 33, the grinding plate 35 at the bottom is driven by the drive shaft 34 to perform a high-speed rotational motion. Therefore, the weld area pressed by the grinding plate 35 can be directly ground, and the protrusions generated on the weld surface and the adhered metal residue parts are removed, ensuring that the subsequent coating of the coupling agent is more uniform and effective. After grinding, by moving the slag removal frame 11, the debris residue generated by grinding will move towards the inside of the slag removal interlayer 13 by means of the collection port 37. At the same time, the residue part is blocked by the partition plate 41. After starting the air pump 36 at the top, the residue collected inside the slag removal interlayer 13 can be sucked out to complete the process of removing the residue. When there is a large concave area on the weld, at this time, when the partition plate 41 presses on this area, the concave will connect the slag removal interlayer 13 and the diversion interlayer 14 on both sides of the partition plate 41. Therefore, when the air pump 36 pumps out the air inside the slag removal interlayer 13, the air inside the diversion interlayer 14 can be synchronously pumped through this concave area, causing the diaphragm part mounted in the middle to bulge downward, bringing the two conductive contacts 40 into contact to generate an electrical signal, and further determining that there is a large concave problem in the corresponding weld area inside the current slag removal frame 11.

[0026] In this embodiment, the coating mechanism 17 includes a coating roller 21 and a baffle 25. A plurality of through holes 22 are formed on the surface of the coating roller 21. The baffle 25 is integrally embedded inside the coating roller 21, and support rings 42 are sleeved at both ends of the coating roller 21. The side of the support ring 42 is fixed on the surface of the slag removal frame 11. A threaded column 23 is welded in the middle of the baffle 25, and a bottom clamping plate 24 is integrally formed on the surface of the threaded column 23. Threaded holes are formed at both ends of the coating roller 21, and the threaded column 23 passes through the inside of the threaded holes. The number of the threaded columns 23 and the baffles 25 is two each. The top of the coating roller 21 abuts against the bottom end of the coupling agent tank 16. A coupling agent conveying assembly 7 is installed in the middle of the support frame 5. Through the rollable coating mechanism 17 in this assembly, the coupling agent can be automatically coated during the process of moving along the surface of the workpiece to be measured. This process does not require manual operation, the coating is more uniform and effective, and the difficulty is reduced.

[0027] Specifically, when the entire coupling agent delivery assembly 7 is driven by the support frame 5 to move, the coating roller 21 will be pressed against the surface of the workpiece to be measured and roll. At this time, through the rotation effect of the coating roller 21, the coupling agent injected inside will overflow downward through the through holes 22 in the bottom layer, completing the purpose of coating the coupling agent. By rotating the threaded column 23, the distance between the two baffles 25 can be changed. Therefore, the allowable flow range of the coupling agent injected inside the coating roller 21 can be controlled, thereby changing the width range of the coupling agent coated on the surface of the workpiece to be measured. With this structure, the coating range of the coupling agent can be adjusted according to the specific width of the weld to be measured.

[0028] In this embodiment, the coupling agent tank 16 is integrally formed at the bottom of the column 15. An injection port 26 is provided on the surface of the coupling agent tank 16. An arc-shaped groove 27 is integrally formed at the bottom end of the inner wall of the coupling agent tank 16. A docking hole 28 is provided at the bottom of the arc-shaped groove 27. Sealing columns 29 are inserted at both ends of the coupling agent tank 16. A top clamping plate 30 is integrally formed at the end of the sealing column 29. A linkage plate 31 is sleeved inside the top clamping plate 30. A collar 32 is integrally formed at the bottom of the linkage plate 31. The collar 32 is sleeved inside the bottom clamping plate 24. The sealing column 29 is embedded inside the arc-shaped groove 27, and the sealing column 29 is used to block the docking hole 28. When controlling the coating mechanism 17 to apply the coupling agent, the actual coating range of the coupling agent can also be adjusted according to the actual width of the weld to be measured, improving the utilization rate of the coupling agent for welds of different widths. This process can also synchronously link the width range injected inside the top coupling agent tank 16, ensuring high efficiency in delivering the coupling agent in the coupling agent tank 16 to the inside of the coating mechanism 17, and also preventing a large amount of coupling agent from overflowing outside the weld.

[0029] Specifically, during the process of driving the baffle 25 at the end to move by rotating the threaded column 23, the collar 32 inside will also be pulled by the bottom clamping plate 24 to move linearly, and then cooperate with the top clamping plate 30 to pull the sealing column 29 to move inside the coupling agent tank 16. When the sealing column 29 moves along the inside of the arc-shaped groove 27, the docking holes 28 within different length ranges can be blocked. During the subsequent rotation of the coating roller 21, it can be ensured that the coupling agent inside the coupling agent tank 16 can only flow into the through holes 22 within the corresponding width range inside the coating roller 21 from the unblocked docking holes 28 in the middle area, thereby ensuring that the coupling agent can only be coated within the regulated weld width range.

[0030] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For a person skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0031] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A weld detection device for electromechanical equipment, comprising a detection device body, characterized in that: The detection device body comprises a detection table (1), a support frame (5), a cleaning mechanism (6) and a coupling agent delivery assembly (7); end plates (4) are welded at both ends of the surface of the detection table (1); a first motor (8) is screwed to the outer side of one of the end plates (4); a screw rod (9) is inserted at the output end of the first motor (8); a threaded sleeve (18) is sleeved on the surface of the screw rod (9); the threaded sleeve (18) is welded to the surface of the support frame (5); a lifting groove (2) is provided at the bottom of the detection table (1); a lifting plate (3) is installed on the surface of the detection table (1); A slag removal frame (11) is provided at one end of the support frame (5), a grinding plate (35) is installed on the inner side of the slag removal frame (11), a detection frame (12) is integrally formed at the other end of the support frame (5), a connecting column (19) is inserted at the bottom of the detection frame (12), an ultrasonic probe (20) is screwed to the bottom of the connecting column (19), a coupling agent delivery assembly (7) is installed at the middle bottom of the support frame (5), and the ultrasonic probe (20), the bottom of the cleaning mechanism (6) and the bottom of the coupling agent delivery assembly (7) are all used to press on the surface of the weld to be tested.

2. The weld detection device for electromechanical equipment according to claim 1, characterized in that: The middle bottom of the support frame (5) is integrally formed with a column (15), the coupling agent delivery assembly (7) comprises a coupling agent tank (16) and a coating mechanism (17), the end of the screw rod (9) is embedded in the interior of the end plate (4) via a bearing, and the top of the slag removal frame (11) is integrally formed with a top plate (10).

3. The device for detecting weld seams of electromechanical equipment according to claim 2, characterized in that: An electric lifting rod is screwed inside the lifting groove (2), the bottom surface of the lifting plate (3) is screwed to the top of the electric lifting rod, the lifting plate (3) is used to lift the workpiece to be measured upwards, and a saw blade is arranged at the edge of the grinding plate (35).

4. The device for detecting weld seams of electromechanical equipment according to claim 2, characterized in that: The cleaning mechanism (6) comprises a grinding plate (35), a second motor (33) and a slag removal frame (11); the second motor (33) and an air pump (36) are screwed onto the surface of the top plate (10); a drive shaft (34) is inserted into the output end of the second motor (33); the grinding plate (35) is mounted on the end of the drive shaft (34); and the interior of the slag removal frame (11) is divided into a slag removal interlayer (13) and a flow guide interlayer (14).

5. The device for detecting weld seams of electromechanical equipment according to claim 4, characterized in that: A partition plate (41) is provided between the slag removal interlayer (13) and the guide interlayer (14); a collecting port (37) is provided on one side of the bottom of the slag removal interlayer (13); the collecting port (37) is in an arc-shaped structure as a whole; one end of the air pump (36) is connected to the interior of the slag removal interlayer (13) through a pipeline; and the air pump (36) is used to extract the residue collected at the bottom of the slag removal interlayer (13) upwards.

6. A weld detection device for electromechanical equipment according to claim 5, characterized in that: The bottom of the partition (41) is directly pressed against the weld to be tested, an elastic membrane (38) and a support plate (39) are mounted on the inner wall of the flow-guiding interlayer (14), the elastic membrane (38) is arranged on the top of the support plate (39), and conductive contact sheets (40) are mounted on the surface of the support plate (39) and the bottom of the elastic membrane (38).

7. The device for detecting weld seams of electromechanical equipment according to claim 2, characterized in that: The coating mechanism (17) comprises a coating roller (21) and a baffle (25), the surface of the coating roller (21) is provided with a plurality of through holes (22), the baffle (25) is integrally embedded in the interior of the coating roller (21), and support rings (42) are sleeved at both ends of the coating roller (21), the side edges of the support rings (42) are fixed to the surface of the slag removal frame (11), a threaded column (23) is welded in the middle of the baffle (25), and a bottom clamping plate (24) is integrally formed on the surface of the threaded column (23).

8. The device for detecting weld seams of electromechanical equipment according to claim 7, characterized in that: Both ends of the coating roller (21) are provided with threaded holes, and threaded columns (23) pass through the inside of the threaded holes. The number of the threaded columns (23) and the baffle plates (25) are both two, and the top of the coating roller (21) rests against the bottom of the coupling agent tank (16).

9. The device for detecting weld seams of electromechanical equipment according to claim 7, characterized in that: The coupling agent tank (16) is integrally formed at the bottom of the column (15); an injection port (26) is provided on the surface of the coupling agent tank (16); an arc-shaped groove (27) is integrally formed at the bottom end of the inner wall of the coupling agent tank (16); and a docking hole (28) is provided at the bottom of the arc-shaped groove (27).

10. The weld detection device for electromechanical equipment according to claim 8, characterized in that: Sealing columns (29) are inserted at both ends of the coupling agent tank (16), and the ends of the sealing columns (29) are integrally formed with a top clamping plate (30), and a linkage plate (31) is sleeved on the inner side of the top clamping plate (30), and a collar (32) is integrally formed on the bottom of the linkage plate (31), and the collar (32) is sleeved on the inner side of the bottom clamping plate (24). The sealing columns (29) are embedded in the interior of the arc groove (27), and the sealing columns (29) are used to seal the docking hole (28).

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