An inspection tool for inspecting the length of a ring-like sealing strip

Abstract

The utility model discloses a kind of for inspecting the length of annular class sealing strip, and the utility model discloses a kind of inspection tool, including movable assembly, fixed assembly, supporting assembly, sliding assembly, rocker assembly, gravity component;Fixed assembly is fixedly arranged on supporting assembly, and several sliding assemblies are arranged on supporting assembly;Movable assembly is installed on supporting assembly by sliding assembly;Rocker assembly connects fixed assembly with movable assembly;Gravity component connects movable assembly with supporting assembly, sealing strip is installed on fixed assembly, after releasing rocker, gravity component drives movable assembly to move along sliding assembly.This application successfully combines three high efficiencies of easy operation, space economy and result accuracy, becomes a kind of modern online detection solution that is integrated with low cost, high efficiency, high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of sealing component inspection technology, and in particular relates to an inspection tool for inspecting the length of annular sealing strips. Background Technology

[0002] Considering that sealing strips are flexible elastomers, and that automotive sealing strips are generally over one meter long, and that they are closed structures with potentially irregular joints, measuring tools such as tape measures cannot accurately determine their length, and that the measurement results may differ from the actual installation results, the length of sealing strips is a crucial item in product inspection, as its result determines whether the sealing strip is well assembled into the vehicle body and ensures good sealing performance. Utility Model Content

[0003] In view of this, the present invention aims to provide an inspection tool for inspecting the length of annular sealing strips, so as to solve at least one technical problem in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] An inspection fixture for inspecting the length of annular sealing strips includes a movable component, a fixed component, a support component, a sliding component, a rocker component, and a gravity component;

[0006] Fixed components are fixedly mounted on the support components, and several sliding components are mounted on the support components; movable components are mounted on the support components via the sliding components.

[0007] The joystick assembly connects the fixed component and the moving component;

[0008] The gravity component connects the movable component and the support component. The sealing strip is installed on the fixed component. After the rocker arm is released, the gravity component drives the movable component to move along the sliding component.

[0009] Furthermore, the fixing component includes a large fixing baffle and a small fixing baffle. The small fixing baffle is installed on the large fixing baffle, and the large fixing baffle is set on the support component by a number of fixing posts.

[0010] The large fixed baffle and the small fixed baffle are semi-circular plates. The large fixed baffle is provided with a first arc-shaped mounting plate for installing annular sealing strips, and the small fixed baffle is provided with a second arc-shaped mounting plate for installing annular sealing strips.

[0011] The large fixed baffle and the small fixed baffle are coaxially arranged.

[0012] Furthermore, the active component includes a large active baffle and a small active baffle; the small active baffle is mounted on the large active baffle;

[0013] The bottom of the large movable baffle is provided with several movable blocks, and the large movable baffle is slidably mounted on the sliding component through the several movable blocks;

[0014] The large movable baffle and the small movable baffle are semi-circular plates. The large movable baffle is provided with a third arc-shaped mounting plate for installing annular sealing strips, and the small movable baffle is provided with a fourth arc-shaped mounting plate for installing annular sealing strips.

[0015] The large movable baffle, the small movable baffle, and the fixed components are coaxially arranged;

[0016] The diameter of the large movable baffle corresponds to the diameter of the large fixed baffle of the fixed component, and the diameter of the small movable baffle corresponds to the diameter of the small fixed baffle of the fixed component.

[0017] Furthermore, the sliding assembly includes a slide rod and fixed blocks, with the slide rod mounted on the support assembly via two fixed blocks;

[0018] The active component is slidably mounted on the slide bar via an active block.

[0019] Furthermore, the rocker assembly includes a rocker arm, a first traction rope loop, and a rocker arm post;

[0020] The rocker post is mounted on the support assembly through the fixing component, and the rocker rotatable mechanism is set on the rocker post.

[0021] Both the large and small fixed baffles of the fixed assembly are provided with arc-shaped sliding grooves, and the rocker arm is equipped with a first connecting rod corresponding to the sliding groove. The rocker arm slides in the arc-shaped sliding groove through the first connecting rod.

[0022] The active component is provided with a second connecting rod corresponding to the first connecting rod, and a first traction rope loop is disposed between the first connecting rod and the second connecting rod.

[0023] Furthermore, a handle is provided at the end of the joystick.

[0024] Furthermore, the support assembly is also provided with an indicator scale; the support assembly is provided with several mounting holes for mounting the indicator scale, and the indicator scale bolts are set on the support assembly;

[0025] The indicator scale is equipped with a scale plate, and the movable component is equipped with an inspection through hole. The position of the inspection through hole corresponds to the position of the indicator scale. The small movable baffle is equipped with a pointer at the inspection through hole. When the rocker assembly is not released, the pointer points to the 0 position of the scale plate.

[0026] The indicator scale and sliding components are arranged in parallel.

[0027] Furthermore, the gravity assembly includes a first fixed pulley block, a second fixed pulley block, a heavy object, a second traction rope loop, and a traction connecting rope;

[0028] The movable component has a large movable baffle located in the middle away from the fixed component, with a traction plate and two traction rods on the traction plate;

[0029] The end of the support component away from the fixed component is provided with a mounting groove, and the first fixed pulley group is installed in the mounting groove of the support component;

[0030] The second fixed pulley group is located below the support assembly, and the position of the second traction rope loop corresponds to the position of the first fixed pulley group;

[0031] The second traction rope sleeve is connected to the traction connecting rope, and the second traction rope sleeve and the traction connecting rope are an integral rope; the second traction rope sleeve is fitted on the two traction rods, one end of the traction connecting rope is fitted on the two traction rods through the second traction rope sleeve, and the other end passes through the lower pulley and upper pulley of the first fixed pulley group in sequence, then passes through the inclined pulley of the second fixed pulley group, and then connects to the heavy object.

[0032] The other end of the traction connecting rope passes through the first fixed pulley group and the second fixed pulley group in sequence and is connected to the heavy object;

[0033] The heavy object includes a hook and several standard weights. The hook is connected to the end of the traction rope. The weights have a through hole in the center and can be stacked and suspended on the hook. A tray can be set under the support component to support unused weights and prevent the heavy object from hitting the ground if it falls accidentally during the test.

[0034] The first fixed pulley assembly includes an upper U-shaped mounting plate, a lower U-shaped mounting plate, an upper pulley, and a lower pulley;

[0035] The upper U-shaped mounting plate and the lower U-shaped mounting plate are respectively installed on the upper and lower sides of the support assembly;

[0036] The upper pulley is mounted on the upper U-shaped mounting plate.

[0037] The sliding wheel is mounted on the lower U-shaped mounting plate.

[0038] The second fixed pulley group includes an inclined mounting plate, a pulley mounting plate, and an inclined pulley; the horizontal end of the inclined mounting plate is mounted on the support assembly, the inclined end of the inclined mounting plate is mounted on the pulley mounting plate, and the inclined pulley is mounted on the pulley mounting plate.

[0039] The traction connecting rope passes through the upper pulley, lower pulley, and inclined pulley in sequence.

[0040] Furthermore, the support assembly includes a support plate and support rods, with several support rods arranged around the support plate and reinforcing rods arranged between the support rods. The end of the support plate away from the fixed assembly is provided with a mounting groove for installing the gravity assembly.

[0041] Compared with existing technologies, the inspection fixture for inspecting the length of annular sealing strips described in this utility model has the following advantages:

[0042] 1. This application adopts a replaceable modular baffle design (large fixed baffle, small fixed baffle). By replacing the arc-shaped mounting plate modules of different diameters, a single main tooling can quickly adapt to annular sealing strips of various inner diameter specifications. This not only significantly reduces the cost of repeatedly purchasing special inspection tools due to product model changes, but also greatly saves valuable space on the production floor.

[0043] This device is equipped with a high-precision indicating scale system with flexible position adjustment. The scale plate can be adjusted vertically through the mounting holes. Importantly, by recording the scale range of qualified products, the qualification criteria can be quickly and scientifically "solidified" to form a visual standard.

[0044] 3. This application is extremely easy to operate: the entire inspection process requires only four steps: "installation, pre-tightening, release, and reading." No professional training is required for operation, and the inspection time for a single product can be reduced to the second level, significantly improving inspection efficiency compared to traditional methods. This application simulates the actual installation tension of the sealing strip through a constant gravity load, avoiding measurement deviations caused by uneven tension, placement distortion, and line-of-sight errors when measuring manually with a measuring tape. This application successfully combines ease of operation, space economy, and result accuracy, becoming a modern online inspection solution integrating low cost, high efficiency, and high reliability. Attached Figure Description

[0045] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0046] Figure 1 This is a schematic diagram of an inspection fixture for inspecting the length of annular sealing strips proposed in this utility model;

[0047] Figure 2 This is a side view of an inspection fixture for inspecting the length of annular sealing strips proposed in this utility model.

[0048] Figure 3 This is a schematic diagram (without a rocker arm) of an inspection fixture for inspecting the length of annular sealing strips proposed in this utility model.

[0049] Figure 4 This is a schematic diagram of the first and second fixed pulley groups of an inspection fixture for inspecting the length of annular sealing strips proposed in this utility model.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Large fixed baffle; 2. Small fixed baffle; 3. Fixed column; 4. First arc-shaped mounting plate; 5. Second arc-shaped mounting plate; 6. Large movable baffle; 7. Small movable baffle; 8. Third arc-shaped mounting plate; 9. Fourth arc-shaped mounting plate; 10. Slide rod; 11. Fixed block; 12. Rocker arm; 13. First traction rope loop; 14. Rocker arm column; 15. Arc-shaped sliding groove; 16. First connecting rod; 17. Second connecting rod; 18. Handle; 19. Indicating scale component 20. Inspection through hole; 21. First fixed pulley block; 2101. Upper U-shaped mounting plate; 2102. Lower U-shaped mounting plate; 2103. Upper pulley; 2104. Lower pulley; 22. Second fixed pulley block; 2201. Inclined mounting plate; 2202. Pulley mounting plate; 2203. Inclined pulley; 23. Heavy object; 24. Second traction rope loop; 25. Traction connecting rope; 26. Support plate; 27. Support rod; 28. Mounting groove; 29. ​​Pointer. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0053] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0054] like Figures 1 to 4 As shown, this testing fixture mainly includes a support assembly, a fixed assembly, a movable assembly, a sliding assembly, a rocker assembly, a gravity assembly, and an indicating scale 19. The fixed assembly is rigidly fixed to one end of the support assembly. The movable assembly is mounted on the support assembly via the sliding assembly and can slide back and forth on the sliding assembly. The rocker assembly connects the fixed assembly and the movable assembly. The gravity assembly connects the movable assembly and the support assembly via a rope and pulley system to provide a constant test tension. The indicating scale 19 is used to accurately read the displacement of the movable assembly.

[0055] The support assembly is the foundation of the entire tooling and consists of a support plate 26, several support rods 27, and reinforcing rods. The support rods 27 are distributed around the support plate 26 to provide stable support, and the reinforcing rods are connected between the support rods 27 to enhance the overall rigidity. The end of the support plate 26 away from the fixed assembly has a mounting groove 28 for mounting the first fixed pulley group 21 of the gravity assembly.

[0056] The fixing assembly includes a large fixing baffle 1 and a small fixing baffle 2. The small fixing baffle 2 is mounted on the large fixing baffle 1 by bolts or other means, and the two are coaxial semi-circular plates. The large fixing baffle 1 is fixed to the support plate 26 by multiple fixing posts 3. The outer sides of the large and small fixing baffles are respectively provided with a first arc-shaped mounting plate 4 and a second arc-shaped mounting plate 5 for mounting the sealing strip. Both the large and small fixing baffles are machined with arc-shaped sliding grooves 15.

[0057] The movable component corresponds to the fixed component and includes a large movable baffle 6 and a small movable baffle 7. The small movable baffle 7 is mounted on the large movable baffle 6, and the two are coaxial semi-circular plates. The bottom of the large movable baffle 6 has multiple movable blocks (not shown in the figure), which are fitted onto the slide rod 10, allowing the entire movable component to slide along the slide rod. The outer sides of the large and small movable baffles are respectively provided with a third arc-shaped mounting plate 8 and a fourth arc-shaped mounting plate 9 for mounting sealing strips. The movable component is provided with a second connecting rod 17 and a traction plate, with two traction rods mounted on the traction plate. The small movable baffle 7 is provided with a pointer 29, and inspection through holes 20 are opened on the small movable baffle 7 and the large movable baffle 6 for observing the reading of the pointer 29 on the indicating scale 19.

[0058] The sliding assembly provides precise guidance for the movable assembly. It includes at least one optical axis slide rod 10 and two fixing blocks 11. The slide rod 10 is fixed parallel to the support plate 26 by the fixing blocks 11, and the movable assembly can slide freely by engaging with the slide rod 10 through the movable block at its bottom.

[0059] The rocker assembly is used for initial pre-tensioning and linkage of the tooling. It includes a rocker arm 12, a first traction rope 13, and a rocker arm post 14. The rocker arm post 14 is fixedly mounted on the support plate 26 and passes through the fixed assembly. The rocker arm 12 can rotate around the rocker arm post 14. One end of the rocker arm 12 is equipped with a handle 18, and the other end is equipped with a first connecting rod 16. The end of the first connecting rod 16 is embedded in the arc-shaped sliding groove 15 of the fixed baffle. The first traction rope 13 connects the first connecting rod 16 and the second connecting rod 17 of the movable assembly. When the movable assembly moves, the rocker arm 12 can be driven to swing along the arc-shaped sliding groove 15 by the first traction rope 13.

[0060] The gravity assembly is used to provide a constant test tension. It includes a first fixed pulley block 21, a second fixed pulley block 22, a counterweight 23, a second traction rope 24, and a traction connecting rope 25. The first fixed pulley block 21 consists of an upper U-shaped mounting plate 2101, a lower U-shaped mounting plate 2102, an upper pulley 2103, and a lower pulley 2104, and is installed in the mounting groove 28 at the end of the support plate 26. The second fixed pulley block 22 consists of an inclined mounting plate 2201, a pulley mounting plate 2202, and an inclined pulley 2203, and is installed below the support plate 26.

[0061] One end of the traction connecting rope 25 is attached to the traction rod of the movable component, and the winding path passes sequentially around the lower pulley 2104, the upper pulley 2103, and the inclined pulley 2203, with the counterweight 23 suspended at the end. The counterweight 23 typically consists of a hook and multiple stackable standard weights.

[0062] The indicator scale element 19 is bolted to a mounting hole on the side of the support plate 26, its position corresponding to the inspection through hole 20 on the movable component. The indicator scale element 19 has a precision scale plate. By adjusting its mounting position, the system's "zero position" can be aligned with the pointer 29.

[0063] Based on the inner diameter of the annular sealing strip to be tested, select either the large fixed baffle 1 and the large movable baffle 6, or the small fixed baffle 2 and the small movable baffle 7. Install the workpiece: Evenly place the sealing strip onto the corresponding arc-shaped mounting plates of the fixed and movable components. The operator pulls the rocker handle 18 backward, using leverage to move the movable component forward against the counterweight pull until it abuts against the fixed component. At this point, pointer 29 should point to the "0" position on the scale plate. If it does not point to zero, loosen the fixing bolts of the indicator scale 19, adjust its position, and then tighten it again (generally, no adjustment is needed).

[0064] Release the rocker arm 12 smoothly and quickly. The counterweight 23 provides a constant pulling force through the pulley system, pulling the movable component backward and gradually straightening the sealing strip. After the entire system comes to a complete stop, observe the value indicated by the pointer 29 on the scale plate through the inspection through-hole 20. If the value is within the predefined acceptable range, the product length is acceptable. If the value exceeds the acceptable range, the product length is unacceptable.

[0065] The first traction rope loop 13 does not provide tension; its core function is to transmit motion, forming a closed-loop linkage mechanism. When the movable component moves, it forces the rocker arm 12 to swing along a predetermined trajectory (arc-shaped sliding groove 15), ensuring that the movement of the entire system is synchronous and controlled after the rocker arm is released. During pre-tensioning, the operator moves the rocker arm 12, which, through the first connecting rod 16 and the first traction rope 13, pulls the movable component forward. During testing, the movable component moves backward under the pull of the gravity component, and then pushes the first connecting rod 16 through the first traction rope 13, forcing the rocker arm 12 to rotate in the opposite direction along the arc-shaped sliding groove 15. The first traction rope loop forms a closed loop of fixed length, transmitting only displacement without changing the magnitude of the force.

[0066] The second traction rope loop 24 and the traction connecting rope 25 together form a tension system for transmitting gravity. Their core function is to convert the weight of the object 23 into a constant test tension acting on the moving component. They are essentially different sections of the same long rope. This design changes the direction of the force and increases the wrap angle of the rope on the moving component, preventing slippage. It sequentially passes through the lower pulley 2104 of the first fixed pulley group 21, the upper pulley 2103 of the first fixed pulley group 21, and the inclined pulley 2203 of the second fixed pulley group 22. The weight 23 (counterweight) is suspended at the end of the rope. The function of the second fixed pulley group is to change the direction of the tension and ensure that the magnitude of the tension is always equal to the weight of the counterweight.

[0067] The first traction rope sleeve 13, the second traction rope sleeve 24, and the traction connecting rope 25 are made of nylon rope.

[0068] The outer diameters of the first arc-shaped mounting plate 4 and the third arc-shaped mounting plate 8 correspond to the inner diameter of the large annular sealing strip to be tested; the outer diameters of the second arc-shaped mounting plate 5 and the fourth arc-shaped mounting plate 9 correspond to the inner diameter of the small annular sealing strip to be tested.

[0069] In practice, the operator continuously moves the rocker arm 12 by the handle 18, using the lever principle to pull the movable component to overcome the pulling force of the heavy object 23; so that the movable component comes into contact with the fixed component, which is in the original state. At this time, the value of the scale plate of the indicator scale 19 is 0. If it is not 0, the position of the scale indicator on the support component is adjusted.

[0070] Depending on the inner diameter of the annular sealing strip, select either a large fixed baffle 1 and a large movable baffle 6, or a small fixed baffle 2 and a small movable baffle 7. Evenly fit the sealing strip onto the corresponding fixed and movable arc-shaped mounting plates; the operator smoothly releases the rocker arm 12. The gravity assembly, with the weight positioned, pulls the movable assembly along the sliding assembly via the traction system, straightening the sealing strip.

[0071] During this process, the first traction rope sleeve 13 drives the rocker arm 12 to rotate synchronously along the arc-shaped sliding groove 15. After the system comes to a complete stop, observe the value indicated by the pointer 29 on the movable component on the indicating scale 19. If the value is within the predefined acceptable range, the product is qualified; otherwise, it is unqualified. The qualification is determined by the scale range indicated by the pointer 29 on the movable baffle, thus enabling trial assembly to verify whether the length of sealing strips of different lengths meets the design requirements.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for inspecting the length of annular sealing strips, characterized in that: Includes moving components, fixed components, support components, sliding components, joystick components, and gravity components; The fixed component is fixedly mounted on the support component, and several sliding components are mounted on the support component; The active component is mounted on the support component via a sliding component; The joystick assembly connects the fixed component and the moving component; The gravity component connects the movable component and the support component. The sealing strip is installed on the fixed component. After the rocker arm is released, the gravity component drives the movable component to move along the sliding component.

2. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The fixing assembly includes a large fixing baffle and a small fixing baffle. The small fixing baffle is installed on the large fixing baffle, and the large fixing baffle is set on the support assembly by several fixing posts. The large fixed baffle and the small fixed baffle are semi-circular plates. The large fixed baffle is provided with a first arc-shaped mounting plate for installing annular sealing strips, and the small fixed baffle is provided with a second arc-shaped mounting plate for installing annular sealing strips. The large fixed baffle and the small fixed baffle are coaxially arranged.

3. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The active components include a large active baffle and a small active baffle; the small active baffle is installed on the large active baffle. The bottom of the large movable baffle is provided with several movable blocks, and the large movable baffle is slidably mounted on the sliding component through the several movable blocks; The large movable baffle and the small movable baffle are semi-circular plates. The large movable baffle is provided with a third arc-shaped mounting plate for installing annular sealing strips, and the small movable baffle is provided with a fourth arc-shaped mounting plate for installing annular sealing strips. The large movable baffle, the small movable baffle, and the fixed components are coaxially arranged; The diameter of the large movable baffle corresponds to the diameter of the large fixed baffle of the fixed component, and the diameter of the small movable baffle corresponds to the diameter of the small fixed baffle of the fixed component.

4. The inspection fixture for inspecting the length of annular sealing strips according to claim 3, characterized in that: The sliding assembly includes a slide rod and fixed blocks. The slide rod is mounted on the support assembly via two fixed blocks. The active component is slidably mounted on the slide bar via an active block.

5. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The rocker assembly includes a rocker arm, a first traction rope loop, and a rocker arm post; The rocker post is mounted on the support assembly through the fixing component, and the rocker rotatable mechanism is set on the rocker post. Both the large and small fixed baffles of the fixed assembly are provided with arc-shaped sliding grooves, and the rocker arm is equipped with a first connecting rod corresponding to the sliding groove. The rocker arm slides in the arc-shaped sliding groove through the first connecting rod. The active component is provided with a second connecting rod corresponding to the first connecting rod, and a first traction rope loop is disposed between the first connecting rod and the second connecting rod; The joystick has a handle at one end.

6. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The support assembly is also provided with an indicator scale; the support assembly is provided with several mounting holes for mounting the indicator scale, and the indicator scale bolts are set on the support assembly; The indicator scale is equipped with a scale plate, and the movable component is equipped with an inspection through hole. The position of the inspection through hole corresponds to the position of the indicator scale. The small movable baffle is equipped with a pointer at the inspection through hole. When the rocker assembly is not released, the pointer points to the 0 position of the scale plate. The indicator scale and sliding components are arranged in parallel.

7. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The gravity assembly includes a first fixed pulley block, a second fixed pulley block, a heavy object, a second traction rope loop, and a traction connecting rope; The movable component has a large movable baffle located in the middle away from the fixed component, with a traction plate and two traction rods on the traction plate; The end of the support component away from the fixed component is provided with a mounting groove, and the first fixed pulley group is installed in the mounting groove of the support component; The second fixed pulley group is located below the support assembly, and the position of the second traction rope loop corresponds to the position of the first fixed pulley group; The second traction rope loop is connected to the traction connecting rope.

8. The inspection fixture for inspecting the length of annular sealing strips according to claim 7, characterized in that: The second traction rope sleeve and the traction connecting rope are an integral rope; the second traction rope sleeve is fitted onto the two traction rods, one end of the traction connecting rope is fitted onto the two traction rods through the second traction rope sleeve, and the other end passes through the lower pulley and upper pulley of the first fixed pulley group in sequence, then passes through the inclined pulley of the second fixed pulley group, and then connects to the heavy object. The other end of the traction connecting rope passes through the first fixed pulley group and the second fixed pulley group in sequence and is connected to the heavy object; The heavy object includes a hook and several standard weights. The hook is connected to the end of the traction rope, and the weights have a through hole in the center and are stacked and suspended on the hook.

9. The inspection fixture for inspecting the length of annular sealing strips according to claim 8, characterized in that: The first fixed pulley assembly includes an upper U-shaped mounting plate, a lower U-shaped mounting plate, an upper pulley, and a lower pulley; The upper U-shaped mounting plate and the lower U-shaped mounting plate are respectively installed on the upper and lower sides of the support assembly; The upper pulley is mounted on the upper U-shaped mounting plate; The sliding wheel is mounted on the lower U-shaped mounting plate. The second fixed pulley group includes an inclined mounting plate, a pulley mounting plate, and an inclined pulley; the horizontal end of the inclined mounting plate is mounted on the support assembly, the inclined end of the inclined mounting plate is mounted on the pulley mounting plate, and the inclined pulley is mounted on the pulley mounting plate. The traction connecting rope passes through the upper pulley, lower pulley, and inclined pulley in sequence.

10. The inspection fixture for inspecting the length of annular sealing strips according to claim 1, characterized in that: The support assembly includes a support plate and support rods. Several support rods are arranged around the support plate, and reinforcing rods are arranged between the support rods. The end of the support plate away from the fixed assembly is provided with a mounting groove for installing the gravity assembly.

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