Breathing valve delivery detection device

Abstract

The invention discloses a breather valve delivery detection device, and belongs to the technical field of breather valve detection. A breather valve delivery detection device comprises two supporting frames, a fixing table is fixedly installed in the middle of the upper sides of the two supporting frames, two lifting mechanisms are installed in the middle of the fixing table, a lifting table is arranged on the lower side of the fixing table, a plurality of first telescopic mechanisms are arranged on one side of the lower end of the lifting table, and a plurality of second telescopic mechanisms are arranged on the other side of the lower end of the lifting table. An inclined frame is arranged on the lower side of the lifting table. The gravity center of the inclined frame can shift after the balancing weight moves, and then the inclined frame is matched with the first telescopic mechanism and the second telescopic mechanism to incline, so that different positions of the breather valve can collide with the ground in the falling process, the authenticity and reliability of an experiment are improved, the detection effect on the breather valve is better, and the detection efficiency is improved. Moreover, after the inclined frame is inclined, when the breather valve falls, the situation that the center of gravity shifts, and consequently the breather valve is unstable and rotates in the falling process can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of breathing valve detection, and particularly relates to a breathing valve factory inspection device. Background Art

[0002] The breathing valve installed on the on-vehicle oil tank is a safety device that ensures the normal breathing of the oil tank during the transportation and loading / unloading of oil products. It can not only maintain the air pressure balance of the storage tank, ensure that the storage tank is not damaged under overpressure or vacuum, but also minimize the emission of the medium in the tank and reduce environmental pollution. However, when the vehicle is in motion or in a traffic accident, especially when the vehicle overturns in extreme cases, if the sealing performance of the breathing valve is poor, a dangerous situation of oil leakage will occur. The purpose of the drop test of the breathing valve is to simulate the force on the breathing valve when the oil tanker overturns to test the sealing safety of the breathing valve product.

[0003] After retrieval, the patent with the publication number CN108168825A discloses a breathing valve drop test device. Through the optimized design of the driving mechanism and the method of using a small stroke to control a large force, the problem of the simple structure of the breathing valve drop test device is solved; through the design of guide rods, buffer devices, etc., the breathing valve drop test device meets the safety requirements; through the design of gears and cams of the driving shaft and the driven shaft, the process of the drop oil tank test is controllable, the fall is symmetric, and the process is stable.

[0004] However, when this device conducts the drop test, it can only make the breathing valve fall symmetrically, so that the breathing valve collides with the ground. When the oil tanker overturns, the contact surface between the breathing valve and the ground is not symmetric contact. This device cannot make the breathing valve collide with the ground at different angles multiple times during the drop test to judge whether it is qualified, and the test result has a large difference from the reality and the accuracy is insufficient.

[0005] In view of this, the present invention proposes a breathing valve factory inspection device. Summary of the Invention

[0006] 1. Technical Problem to be Solved

[0007] The purpose of the present invention is to provide a breathing valve factory inspection device to solve the problems raised in the above background art.

[0008] 2. Technical Solution

[0009] A breathing valve factory inspection device includes two support frames. In the middle of the upper sides of the two support frames, a fixed platform is fixedly installed. In the middle of the fixed platform, two lifting mechanisms are installed. A suspension platform is arranged under the fixed platform, and the lifting mechanisms pull the suspension platform.

[0010] One side of the lower end of the suspension platform is provided with a plurality of first telescopic mechanisms, and the other side of the lower end of the suspension platform is provided with a plurality of second telescopic mechanisms. An inclined frame is arranged on the lower side of the suspension platform. The inclined frame is connected to the suspension platform through the first telescopic mechanism and the second telescopic mechanism. Two groups of sliding grooves are formed at the lower end of the inclined frame, sliders are slidably installed inside the sliding grooves, clamping blocks are fixedly installed at the lower ends of the sliders, and the clamping blocks are close to each other to clamp the breathing valve.

[0011] A guide groove is formed in the middle of the upper end of the inclined frame, a guide block is slidably installed inside the guide groove, and a counterweight block is fixedly installed at the upper end of the guide block.

[0012] As an alternative embodiment of the technical solution of the present application, the lifting mechanism includes a motor, a wire winding wheel is fixedly installed at the output end of the motor, a steel wire rope is wound around the outer wall of the wire winding wheel, and one end of the steel wire rope away from the wire winding wheel is fixedly connected to the upper end of the suspension platform.

[0013] As an alternative embodiment of the technical solution of the present application, the first telescopic mechanism and the second telescopic mechanism include a fixed rod fixedly connected to the suspension platform, a telescopic rod is sleeved outside the fixed rod, the lower end of the fixed rod is fixedly connected to the inner wall of the telescopic rod through a connecting spring, the telescopic rod on the first telescopic mechanism is rotatably connected to the inclined frame, a connecting block is slidably installed at the upper end of the inclined frame, and the connecting block is rotatably connected to the lower end of the telescopic rod.

[0014] As an alternative embodiment of the technical solution of the present application, two piston cylinders are fixedly installed at the upper end of the inclined frame, piston rods are slidably installed inside the piston cylinders, a first pressure spring is fixedly installed at the lower end of the piston rods, the lower end of the first pressure spring is in pressing contact with the lower end inner wall of the piston cylinders, one end of the guide block is fixedly installed with a corrugated pipe, the lower end of the piston cylinder is communicated with the inside of the corrugated pipe through a hose, and a fixing mechanism is installed on the piston cylinder.

[0015] As an alternative embodiment of the technical solution of the present application, the fixing mechanism includes a clamping block, the clamping block penetrates through the outer wall of the piston cylinder and extends to the inside thereof, a return spring is fixedly installed on the clamping block, the other end of the return spring is fixedly connected to the outer wall of the piston cylinder, a plurality of clamping grooves are formed in the outer wall of the piston rod opposite to the clamping block, the upper side of the end of the clamping block close to the clamping groove is of an inclined structure, and the clamping block is in clamping fit with the clamping groove.

[0016] As an alternative embodiment of the technical solution of the present application, an elastic cord is fixedly installed on the telescopic rod of the first telescopic mechanism, and the other end of the elastic cord sequentially penetrates through the fixed rod and the piston cylinder slidably installed therewith and is fixedly connected to one end of the clamping block.

[0017] As an alternative embodiment of the technical solution of the present application, a cavity is formed inside the fixed platform, an extrusion plate is slidably installed inside the cavity, the extrusion plate is in extrusion contact with the upper end of the piston rod, two extrusion rods are rotatably installed at the upper end of the extrusion plate, the other ends of the extrusion rods are rotatably connected to a moving rod, and two threaded rods penetrate through the middle of the fixed platform, and the threaded rods are threadedly connected to the moving rod.

[0018] As an alternative embodiment of the technical solution of the present application, a gear is fixedly installed at one end of the threaded rod away from the cavity, two driving rods are fixedly installed at the upper end of the hanging platform, and a plurality of ratchet claws are rotatably and elastically connected to one end of the driving rod close to the gear, and the ratchet claws are engaged and driven with the gear.

[0019] As an alternative embodiment of the technical solution of the present application, a second pressure spring is fixedly installed at one end of the slider, and the other end of the second pressure spring is fixedly connected to the inner wall of the chute.

[0020] As an alternative embodiment of the technical solution of the present application, two pulling ropes are fixedly installed on the outer wall of the moving rod away from the second telescopic mechanism, and the other ends of the two pulling ropes sequentially penetrate through the inner wall of the cavity and the outer wall of the inclined frame and extend to the inner wall of the chute and are fixedly connected to the outer walls of two different sliders. Two positioning cylinders are fixedly installed at the lower end of the fixed platform, and positioning rods are fixedly installed at positions opposite to the positioning cylinders at the upper end of the inclined frame. The positioning rods are inserted and matched with the positioning cylinders, and the lower end of the positioning cylinder is in a horn-shaped structure.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] (1) By arranging the inclined frame in the present invention, the center of gravity can shift after the counterweight moves, and then cooperate with the first telescopic mechanism and the second telescopic mechanism to tilt, so that different positions of the breathing valve can collide with the ground during the falling process, thereby increasing the authenticity and reliability of the experiment, and having a better detection effect on the breathing valve. Moreover, after the inclined frame tilts, when the breathing valve falls, it can avoid the center of gravity shifting, resulting in instability and rotation during the falling process of the breathing valve.

[0024] (2) By arranging the extrusion plate in cooperation with the piston rod and the piston cylinder in the present invention, the counterweight can be automatically pushed to move after the inclined frame rises. It is simple and convenient to use. And under the action of the threaded rod, the gear, the driving rod and the ratchet claw, the position of the extrusion plate can be changed through the extrusion rod, and the extrusion plate can be automatically moved after each reciprocation of the inclined frame, so that the counterweight can be pushed to different positions, thereby enabling the inclined frame to rotate at different angles each time, and further enabling the breathing valve to collide with the ground at different angles.

[0025] (3) By arranging the drawstring, the present invention can pull the slider after the inclined frame descends to a certain position, so that the clamping block is disengaged from the breathing valve, and the clamping block can bounce up and randomly fall on the ground again to collide with the ground after colliding with the ground. Through this arrangement, the authenticity of the detection result can be further increased, simulating the situation where the breathing valve drops during transportation.

[0026] (4) By arranging the positioning cylinder and the positioning rod, the present invention can keep rising horizontally after the inclined frame rises to a certain position, so that the piston rod is in a vertical state and is in pressing contact with the pressing plate, and the inclined frame still keeps rising in a horizontal state after the counterweight block deflects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the partial structure of the chute and the slider of the present invention.

[0030] Figure 3 It is a schematic diagram of the partial structure of the counterweight block and the corrugated pipe of the present invention.

[0031] Figure 4 It is a schematic diagram of the internal structure of the piston cylinder and the internal structure of the telescopic rod of the present invention.

[0032] Figure 5 It is a schematic diagram of the internal structure of the cavity and the partial structure of the wire winding wheel of the present invention.

[0033] Figure 6 It is a schematic diagram of the partial structure of the extrusion rod and the extrusion plate of the present invention.

[0034] Figure 7 It is a schematic diagram of the partial structure of the gear of the present invention.

[0035] Figure 8 It is a schematic diagram of the partial structure of the pawl of the present invention.

[0036] Explanation of the reference numerals in the drawings:

[0037] 1. Support frame; 2. Fixed platform; 3. Lifting mechanism; 4. Suspension platform; 5. First telescopic mechanism; 6. Second telescopic mechanism; 7. Inclined frame; 8. Chute; 9. Slide block; 10. Clamping block; 11. Guide groove; 12. Guide block; 13. Counterweight; 14. Motor; 15. Winding wheel; 16. Steel wire rope; 17. Fixed rod; 18. Telescopic rod; 19. Connecting spring; 20. Connecting block; 21. Piston cylinder; 22. Piston rod; 23. First compression spring; 24. Bellows; 25. Hose; 26. Fixing mechanism; 27. Block; 28. Return spring; 29. Card slot; 30. Elastic cord; 31. Cavity; 32. Extrusion plate; 33. Extrusion rod; 34. Moving rod; 35. Threaded rod; 36. Gear; 37. Driving rod; 38. Pawl; 39. Second compression spring; 40. Pulling rope; 41. Positioning cylinder; 42. Positioning rod. Detailed implementation manner

[0038] 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. Obviously, 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.

[0039] Embodiment:

[0040] Please refer to Figure 1-8 , a factory inspection device for a breathing valve, including two support frames 1. A fixed platform 2 is fixedly installed in the middle of the upper sides of the two support frames 1. Two lifting mechanisms 3 are installed in the middle of the fixed platform 2. A suspension platform 4 is provided below the fixed platform 2, and the lifting mechanism 3 pulls the suspension platform 4;

[0041] On one side of the lower end of the suspension platform 4, a plurality of first telescopic mechanisms 5 are provided. On the other side of the lower end of the suspension platform 4, a plurality of second telescopic mechanisms 6 are provided. An inclined frame 7 is provided below the suspension platform 4. The inclined frame 7 is connected to the suspension platform 4 through the first telescopic mechanism 5 and the second telescopic mechanism 6. Two groups of chutes 8 are opened at the lower end of the inclined frame 7. Slide blocks 9 are slidably installed inside the chutes 8. The slide blocks 9 can move along the direction of the chutes 8. Clamping blocks 10 are fixedly installed at the lower ends of the slide blocks 9. The clamping blocks 10 approach each other to clamp the breathing valve;

[0042] A guide groove 11 is opened in the middle of the upper end of the inclined frame 7. A guide block 12 is slidably installed inside the guide groove 11. A counterweight 13 is fixedly installed at the upper end of the guide block 12. The guide block 12 can move along the direction of the guide groove 11, and the guide block 12 can drive the counterweight 13 to move.

[0043] Specifically, the lifting mechanism 3 includes a motor 14. A winding wheel 15 is fixedly installed at the output end of the motor 14. The motor 14 can drive the winding wheel 15 to rotate. A steel wire rope 16 is wound around the outer wall of the winding wheel 15. When the winding wheel 15 rotates, it can wind the steel wire rope 16. One end of the steel wire rope 16 away from the winding wheel 15 is fixedly connected to the upper end of the lifting platform 4.

[0044] Furthermore, the first telescopic mechanism 5 and the second telescopic mechanism 6 include a fixed rod 17 fixedly connected to the lifting platform 4. An expansion rod 18 is sleeved outside the fixed rod 17. The expansion rod 18 can move relative to the fixed rod 17. The lower end of the fixed rod 17 is fixedly connected to the inner wall of the expansion rod 18 through a connecting spring 19. The expansion rod 18 on the first telescopic mechanism 5 is rotatably connected to the inclined frame 7. The expansion rod 18 on the first telescopic mechanism 5 can rotate relative to the inclined frame 7. A connecting block 20 is slidably installed at the upper end of the inclined frame 7. The expansion rod 18 on the second telescopic mechanism 6 can rotate relative to the connecting block 20. The connecting block 20 is rotatably connected to the lower end of the expansion rod 18.

[0045] Even further, two piston cylinders 21 are fixedly installed at the upper end of the inclined frame 7. A piston rod 22 is slidably installed inside the piston cylinder 21. The piston rod 22 can move relative to the piston cylinder 21. A first pressure spring 23 is fixedly installed at the lower end of the piston rod 22. The lower end of the first pressure spring 23 is in pressing contact with the lower inner wall of the piston cylinder 21. One end of the guide block 12 is fixedly installed with a corrugated pipe 24. The lower end of the piston cylinder 21 is communicated with the inside of the corrugated pipe 24 through a hose 25. The air inside the piston cylinder 21 can enter the inside of the corrugated pipe 24 through the hose 25, so that the corrugated pipe 24 extends. When the piston rod 22 rises relative to the piston cylinder 21, the air in the corrugated pipe 24 can return to the inside of the piston cylinder 21. A fixing mechanism 26 is installed on the piston cylinder 21.

[0046] It should be noted that the fixing mechanism 26 includes a clamping block 27. The clamping block 27 penetrates through the outer wall of the piston cylinder 21 and extends to its inside. A return spring 28 is fixedly installed on the clamping block 27. The other end of the return spring 28 is fixedly connected to the outer wall of the piston cylinder 21. A plurality of card slots 29 are formed on the outer wall of the piston rod 22 opposite to the clamping block 27. The upper side of one end of the clamping block 27 close to the card slots 29 is of an inclined structure. The clamping block 27 is in clamping fit with the card slots 29. After the clamping block 27 is clamped into the card slots 29, it can prevent the first pressure spring 23 from pushing the piston rod 22 upward.

[0047] In addition, an elastic cord 30 is fixedly installed on the expansion rod 18 of the first telescopic mechanism 5. The other end of the elastic cord 30 sequentially penetrates through the fixed rod 17 and the piston cylinder 21 slidably installed therewith and is fixedly connected to one end of the clamping block 27. When the elastic cord 30 is tightened, the clamping block 27 can be tightened. When the expansion rod 18 and the fixed rod 17 are in a contracted state, the elastic cord 30 is in a relaxed state.

[0048] It should be noted that a cavity 31 is formed inside the fixed platform 2. An extrusion plate 32 is slidably installed inside the cavity 31. The extrusion plate 32 is in extrusion contact with the upper end of the piston rod 22. After the piston rod 22 is blocked by the extrusion plate 32, it can move relative to the piston cylinder 21. Two extrusion rods 33 are rotatably installed at the upper end of the extrusion plate 32. The other ends of the extrusion rods 33 are rotatably connected to a moving rod 34. Two threaded rods 35 penetrate through the middle of the fixed platform 2. The threaded rods 35 are threadedly connected to the moving rod 34. When the threaded rods 35 rotate, the moving rod 34 can move inside the cavity 31.

[0049] In addition, a gear 36 is fixedly installed at one end of the threaded rod 35 away from the cavity 31. Two driving rods 37 are fixedly installed at the upper end of the hanging platform 4. One end of the driving rod 37 close to the gear 36 is rotatably connected and elastically connected with a plurality of pawls 38. The pawls 38 are meshed and driven with the gear 36. When the driving rod 37 descends, it will drive the pawls 38 to descend. The descent of the pawls 38 can drive the gear 36 to rotate.

[0050] Wherein, one end of the slider 9 is fixedly installed with a second compression spring 39. The other end of the second compression spring 39 is fixedly connected with the inner wall of the chute 8. The second compression spring 39 can extrude the slider 9, so as to cooperate with the two clamping blocks 10 to clamp the breathing valve.

[0051] On the basis of the above scheme, two pull ropes 40 are fixedly installed on the outer wall of the moving rod 34 away from the second telescopic mechanism 6. The other ends of the two pull ropes 40 sequentially penetrate through the inner wall of the cavity 31 and the outer wall of the inclined frame 7 and extend to the inner wall of the chute 8 and are fixedly connected with the outer walls of two different sliders 9. After the pull ropes 40 are pulled, they can drive the sliders 9 to move, so that they move along the direction of the chute 8. Two positioning cylinders 41 are fixedly installed at the lower end of the fixed platform 2. Positioning rods 42 are fixedly installed at the positions of the upper end of the inclined frame 7 opposite to the positioning cylinders 41. The positioning cylinders 41 can cooperate with the positioning rods 42 to keep the inclined frame 7 in a balanced state after rising to a certain position. The positioning rods 42 are inserted and matched with the positioning cylinders 41. The lower end of the positioning cylinder 41 is in a horn-shaped structure. The positioning cylinder 41 with the lower end in a horn-shaped structure can facilitate the upper end of the positioning rod 42 to be inserted into the positioning cylinder 41 when the positioning rod 42 rises.

[0052] Working principle: When the device is working, place the breathing valve between the two clamping blocks 10, and under the action of the two second springs, the clamping blocks 10 can clamp the breathing valve. Then, use the motor 14 to drive the winding wheel 15 to rotate, which can wind the steel wire rope 16, so that the suspension platform 4 can move upward. Among them, when the suspension platform 4 moves upward, it can make the inclined frame 7 rise through the first telescopic mechanism 5 and the second telescopic mechanism 6. The rising of the inclined frame 7 can make the piston rod 22 rise through the piston cylinder 21 and the first pressure spring 23 inside it. When the inclined frame 7 moves upward to a certain position, the upper end of the piston rod 22 will contact the lower end of the pressing plate 32 and can move relative to the piston cylinder 21 under the block of the pressing plate 32 as the piston rod 22 continues to rise. At this time, the air in the piston cylinder 21 will enter the bellows 24 through the hose 25. Then, the bellows 24 can elongate under the condition of increased internal pressure and push the guide block 12 to move along the direction of the guide groove 11, and the counterweight 13 at the upper end of the guide block 12 will also move accordingly. When the position of the counterweight 13 moves, it can cause the center of gravity of the inclined frame 7 to shift. Then, control the motor 14 to rotate in the reverse direction, so that the winding wheel 15 rotates in the reverse direction. At this time, the suspension platform 4 can cooperate with gravity to make the inclined frame 7 descend under the action of the first telescopic mechanism 5 and the second telescopic mechanism 6. When the inclined frame 7 descends, the positioning rod 42 at its upper end will descend and disengage from the positioning cylinder 41. At this time, due to the shift of the center of gravity, the inclined frame 7 will tilt, so that the second telescopic mechanism 6 is stretched longer. At this time, the breathing valve between the two clamping blocks 10 will also tilt. Then, turn off the motor 14. At this time, under the action of gravity, the breathing valve, the clamping blocks 10, the inclined frame 7, and the suspension platform 4 will quickly descend and pull the steel wire rope 16 to make the winding wheel 15 rotate in the reverse direction. When the breathing valve and the inclined frame 7 descend to a certain position, the pull rope 40 will be tightened, and as the inclined frame 7 continues to descend, the pull rope 40 will pull the slider 9 to move along the direction of the chute 8, and the slider 9 can drive the clamping blocks 10 to move when moving. After the two clamping blocks 10 move, they can separate. At this time, the breathing valve will fall from between the two clamping blocks 10 and then hit the ground. When the breathing valve disengages from the clamping blocks 10, the pulling force on the telescopic rod 18 by the moving frame will decrease. At this time, the connecting spring 19 will pull the telescopic rod 18 to move relative to the fixed rod 17. At this time, the elastic cord 30 is in a relaxed state, and under the action of the return spring 28, the block 27 can move relative to the telescopic rod 18 and disengage from the card slot 29. At this time, under the action of the first pressure spring 23, the piston rod 22 can rise and move to the uppermost end. Among them, when the suspension platform 4 descends, the driving rod 37 will drive the pawl 38 to descend. The descent of the pawl 38 can drive the gear 36 to rotate. The rotation of the gear 36 can drive the threaded rod 35 to rotate. After the threaded rod 35 rotates, it can make the moving rod 34 move. After the moving rod 34 moves, it can drive the pressing rod 33 to move. Since one end of the pressing rod 33 is rotatably connected to the pressing plate 32 and the other end is rotatably connected to the moving rod 34 and the length remains unchanged, therefore,When one end of the extrusion rod 33 is extruded by the moving rod 34, it can rotate, thereby extruding the extrusion plate 32 and causing the extrusion plate 32 to move downward. When the suspension platform 4 rises next time, the piston rod 22 can move a longer distance relative to the piston cylinder 21. Among them, when the suspension platform 4 rises, the outer wall of the pawl 38 is extruded by the gear 36 and rotates, so that it cannot engage with the teeth on the gear 36, and thus cannot drive the gear 36 to rotate. Among them, when the moving rod 34 moves, the stay cord 40 close to the first telescopic structure is pulled, and the other stay cord 40 becomes slack, so as to adapt to the inclined frame 7 after tilting.

[0053] 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 make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A factory inspection device for a breathing valve, comprising two support frames (1), characterized in that: A fixed platform (2) is fixedly installed in the middle of the upper sides of the two support frames (1). Two lifting mechanisms (3) are installed in the middle of the fixed platform (2). A suspension platform (4) is provided below the fixed platform (2). The lifting mechanisms (3) pull the suspension platform (4). On one side of the lower end of the suspension platform (4), a plurality of first telescopic mechanisms (5) are provided. On the other side of the lower end of the suspension platform (4), a plurality of second telescopic mechanisms (6) are provided. An inclined frame (7) is provided below the suspension platform (4). The inclined frame (7) is connected to the suspension platform (4) through the first telescopic mechanism (5) and the second telescopic mechanism (6). Two groups of sliding grooves (8) are opened at the lower end of the inclined frame (7). Sliders (9) are slidably installed inside the sliding grooves (8). Clamping blocks (10) are fixedly installed at the lower ends of the sliders (9). The clamping blocks (10) approach each other to clamp the breathing valve. A guiding groove (11) is opened in the middle of the upper end of the inclined frame (7). A guiding block (12) is slidably installed inside the guiding groove (11). A counterweight block (13) is fixedly installed at the upper end of the guiding block (12).

2. The factory inspection device for a breathing valve according to claim 1, wherein: The lifting mechanism (3) includes a motor (14). A wire winding wheel (15) is fixedly installed at the output end of the motor (14). A steel wire rope (16) is wound around the outer wall of the wire winding wheel (15). One end of the steel wire rope (16) away from the wire winding wheel (15) is fixedly connected to the upper end of the suspension platform (4).

3. The factory inspection device for a breathing valve according to claim 2, wherein: The first telescopic mechanism (5) and the second telescopic mechanism (6) include a fixed rod (17) fixedly connected to the suspension platform (4). An expansion rod (18) is sleeved outside the fixed rod (17). The lower end of the fixed rod (17) is fixedly connected to the inner wall of the expansion rod (18) through a connecting spring (19). The expansion rod (18) on the first telescopic mechanism (5) is rotatably connected to the inclined frame (7). A connecting block (20) is slidably installed at the upper end of the inclined frame (7). The connecting block (20) is rotatably connected to the lower end of the expansion rod (18).

4. The factory inspection device for a breathing valve according to claim 3, wherein: Two piston cylinders (21) are fixedly installed at the upper end of the inclined frame (7). A piston rod (22) is slidably installed inside the piston cylinder (21). A first pressure spring (23) is fixedly installed at the lower end of the piston rod (22). The lower end of the first pressure spring (23) is in pressing contact with the lower inner wall of the piston cylinder (21). One end of the guiding block (12) is fixedly installed with a corrugated pipe (24). The lower end of the piston cylinder (21) is communicated with the inside of the corrugated pipe (24) through a hose (25). A fixing mechanism (26) is installed on the piston cylinder (21).

5. A factory inspection device for a breathing valve according to claim 4, characterized in that: The fixing mechanism (26) includes a clamping block (27). The clamping block (27) penetrates through the outer wall of the piston cylinder (21) and extends into its interior. A return spring (28) is fixedly installed on the clamping block (27). The other end of the return spring (28) is fixedly connected to the outer wall of the piston cylinder (21). A plurality of clamping grooves (29) are opened at one end of the outer wall of the piston rod (22) opposite to the clamping block (27). The upper side of one end of the clamping block (27) close to the clamping groove (29) is of an inclined structure. The clamping block (27) is in clamping fit with the clamping groove (29).

6. The factory inspection device for a breathing valve according to claim 5, characterized in that: A elastic cord (30) is fixedly installed on the telescopic rod (18) of the first telescopic mechanism (5). The other end of the elastic cord (30) sequentially passes through the fixed rod (17) and the piston cylinder (21) which are slidably installed thereon and is fixedly connected to one end of the clamping block (27).

7. The factory inspection device for a breathing valve according to claim 6, characterized in that: A cavity (31) is formed inside the fixed platform (2). A pressing plate (32) is slidably installed inside the cavity (31). The pressing plate (32) is in pressing contact with the upper end of the piston rod (22). Two pressing rods (33) are rotatably installed at the upper end of the pressing plate (32). The other end of the pressing rod (33) is rotatably connected to a moving rod (34). Two threaded rods (35) penetrate through the middle of the fixed platform (2). The threaded rods (35) are threadedly connected to the moving rod (34).

8. The factory inspection device for a breathing valve according to claim 7, characterized in that: A gear (36) is fixedly installed at the end of the threaded rod (35) away from the cavity (31). Two driving rods (37) are fixedly installed at the upper end of the hanging platform (4). One end of the driving rod (37) close to the gear (36) is rotatably connected and elastically connected with a plurality of ratchet claws (38). The ratchet claws (38) are engaged with the gear (36) for transmission.

9. The factory inspection device for a breathing valve according to claim 8, characterized in that: One end of the slider (9) is fixedly installed with a second compression spring (39). The other end of the second compression spring (39) is fixedly connected to the inner wall of the chute (8).

10. A factory inspection device for a breathing valve according to claim 9, characterized in that: Two pull ropes (40) are fixedly installed on the outer wall of the moving rod (34) away from the second telescopic mechanism (6). The other ends of the two pull ropes (40) sequentially pass through the inner wall of the cavity (31) and the outer wall of the inclined frame (7) and extend to the inner wall of the chute (8) and are fixedly connected to the outer walls of two different sliders (9). Two positioning cylinders (41) are fixedly installed at the lower end of the fixed platform (2). Positioning rods (42) are fixedly installed at the positions of the upper end of the inclined frame (7) opposite to the positioning cylinders (41). The positioning rods (42) are inserted and matched with the positioning cylinders (41). The lower end of the positioning cylinder (41) is in a horn-shaped structure.

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