A diaphragm spring end face runout detection device for a clutch plate assembly

Abstract

The utility model provides a diaphragm spring end face runout detection device for clutch pressure plate assembly relates to clutch pressure plate technical field, including work table, support in the middle part of work table, install in the lifting mechanism of work table below, the multiple pressure mechanism of surrounding support annular arrangement and measurement part. Pressure mechanism and lifting mechanism drive connection can synchronously exert the pressure of vertical downward on the pressure plate assembly outer edge on support, analog real working condition. Measurement part includes dial gauge, rotating part and positioning column, and positioning column is inserted in the center positioning hole of support, and dial gauge is installed on the top of positioning column through rotating part. The utility model discloses through analog real pressure tight state, has realized to diaphragm spring separation finger end face runout of quick, accurate detection, effectively guaranteed the factory quality of clutch pressure plate assembly, improved detection efficiency and consistency.

Description

Technical Field

[0001] This utility model mainly relates to the field of clutch pressure plate technology, specifically to a diaphragm spring end face runout detection device for clutch pressure plate assembly. Background Technology

[0002] The diaphragm spring is a core component of the automotive clutch pressure plate assembly, serving as both a pressure spring and a release lever. Its performance directly determines the clutch's torque transmission capacity, disengagement smoothness, and engagement smoothness. The inner ring of the diaphragm spring is divided into multiple independent release fingers. During clutch operation, the release bearing presses against the end face of these release fingers, causing the diaphragm spring to deform in the opposite direction, thereby disengaging the clutch.

[0003] The flatness of the release finger end face, i.e., its end face runout, is a crucial quality indicator. If the end face runout exceeds the tolerance, it means that the height of each release finger is inconsistent, which will lead to uneven force on the release bearing and cause a series of problems: First, the clutch will not disengage completely, causing difficulty in shifting gears or even gear grinding; second, the clutch will vibrate during engagement, affecting driving comfort; third, it will accelerate the wear of the release bearing and the release fingers themselves, shortening the service life of the clutch assembly.

[0004] Existing testing methods typically involve placing the pressure plate assembly on a simple support and manually measuring it using a coordinate measuring machine or other general-purpose measuring tools. These methods have several significant drawbacks: First, they cannot effectively simulate the actual compression state of the diaphragm spring within the assembly during measurement, leading to inconsistencies between the measurement datum and the working datum. Consequently, the measurement results fail to accurately reflect the diaphragm spring's actual performance within the assembly, resulting in poor accuracy. Second, the manual operation process is cumbersome, inefficient, and fails to meet production cycle requirements, making it unsuitable for online testing on production lines. Finally, general-purpose equipment is expensive and occupies a large space. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model: This utility model provides a diaphragm spring end face runout detection device for clutch pressure plate assembly, in order to solve the technical problems existing in the background art.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a diaphragm spring end face runout detection device for a clutch pressure plate assembly, including a worktable with a working groove in the middle of the table surface; A support section, disposed within the working slot, is used to support the clutch pressure plate assembly to be tested; A lifting mechanism is installed below the workbench and located at the bottom of the support section; Multiple clamping mechanisms are arranged in a ring array around the support portion. The clamping mechanisms are driven and connected to the lifting mechanism, so that when the lifting mechanism is activated, it can synchronously drive the clamping mechanisms to apply a vertically downward clamping force to the outer edge of the clutch pressure plate assembly placed on the support portion. The measuring unit includes a dial indicator, a rotating component, and a positioning column. The dial indicator is mounted on the top of the positioning column via the rotating component. The positioning column is detachably inserted into the central positioning hole of the support unit, allowing the probe of the dial indicator to contact the separating finger end face of the compressed diaphragm spring. By rotating the rotating component, the dial indicator is driven to rotate around the axis of the positioning column to complete the detection of the runout of the separating finger end face.

[0007] When the device is in operation, the operator places the clutch pressure plate assembly equipped with the diaphragm spring on the upper surface of the support. After the device is started, the lifting mechanism actuates, driving multiple pressing mechanisms in the outer annular array to move downwards synchronously, pressing the outer edge of the clutch pressure plate assembly to fix it and simulate the working state. Under this pressing force, the inner ring of the diaphragm spring, i.e., the release finger, will produce the expected reverse elastic deformation, changing from bulging to concave.

[0008] Subsequently, the operator inserts the positioning pin of the measuring unit into the positioning hole in the center of the support unit. The dial indicator is adjusted so that its probe contacts the end face of any separating finger and is pre-loaded with a certain stroke. The dial indicator is then zeroed. The rotating component is smoothly rotated by hand, causing the dial indicator to rotate one revolution around the axis of the positioning pin. During this process, the dial indicator's probe will pass over the end faces of all separating fingers. The difference between the maximum and minimum readings of the pointer is the runout of the diaphragm spring separating finger's end face. By observing and judging whether this value is within the preset tolerance range, the operator can quickly and accurately determine the product quality.

[0009] Through the above-described structure, this invention enables rapid, online detection of the diaphragm spring release finger tip surface movement under simulated real working conditions, effectively ensuring the factory quality of the clutch pressure plate assembly and improving detection efficiency and consistency.

[0010] Furthermore, the support includes a support cylinder and a replaceable support plate; The support plate is fixedly installed on the top of the support cylinder by fasteners, and its top surface forms a positioning surface that matches the bottom structure of the clutch pressure plate assembly to be tested. The bottom of the support cylinder is connected to the support block inside the workbench. A mounting groove penetrating its thickness is formed in the center of the support plate, and a mounting hole is formed in the middle of the mounting groove. The bottom of the support cylinder has an axial receiving space, and at least a portion of the lifting mechanism is disposed within this receiving space.

[0011] Furthermore, the lifting mechanism includes a lifting cylinder as a power source; The cylinder body of the lifting cylinder is fixed to the bottom of the workbench, and its control switch is located on the edge of the workbench surface. The piston rod end of the lifting cylinder is connected to a lifting connecting block; The side wall of the support cylinder is provided with a vertical lifting groove. The lifting connecting block passes through the lifting groove and extends into the receiving space of the support cylinder, and is connected to the end of the piston rod, so that the lifting connecting block can slide vertically along the lifting groove. The other end of the lifting block is connected to the bottom end of the lifting column, and the top end of the lifting column is connected to the pressing mechanism via a transmission.

[0012] Furthermore, the clamping mechanism includes an L-shaped positioning block, the side of which is connected to the support cylinder, and the bottom of the L-shaped positioning block is provided with a lifting groove that is slidably connected to the lifting column. A sliding column is slidably connected in the lifting groove, and the sliding column is connected to the lifting column. A rotating clamping member is connected to the top of the sliding column.

[0013] Furthermore, the rotating clamping element includes a lever-type clamping block; The middle part of the lever-type pressure block is hinged to one end of a symmetrically arranged connecting strip via a pivot, and the other end of the connecting strip is hinged to the top mounting block of the L-shaped positioning block via a pivot, so that the lever-type pressure block can pivot around the connecting strip. The rear end of the lever-type pressure block is rotatably connected to the top end of the sliding column via a pin. The front end of the lever-type pressure block is provided with a replaceable clamping pin; When the sliding column moves upward under the drive of the lifting column, it pushes against the rear end of the lever-type pressure block, causing the front end of the lever-type pressure block to swing downward around the central pivot, thereby driving the clamping pin to press against the outer edge of the clutch pressure plate assembly.

[0014] Furthermore, the rotating component includes a connecting arm, one end of which is rotatably connected to the bottom frame of the dial indicator, the top of which is rotatably connected to a first bearing, a drive handle is connected to the outside of the first bearing, the other end of which is connected to a rotating block, and the middle of the rotating block is connected to the positioning column through a second bearing.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This invention features a reasonable design. By simulating the actual compression state of a diaphragm spring in the clutch assembly, it ensures that the testing benchmark is consistent with the actual working conditions, effectively improving the accuracy and reliability of the testing results. Through the linkage design of the lifting mechanism and the ring array compression mechanism, synchronous and uniform compression of the pressure plate assembly is achieved, avoiding measurement errors caused by uneven local force. Simultaneously, the lever-type compression structure efficiently converts vertical motion into stable downward pressure, further ensuring the stability of the compression process.

[0016] The design of a split support plate and replaceable clamping pins allows the device to be quickly adapted to different models of pressure plate assemblies, significantly enhancing the versatility of the testing device and the flexibility of the production line. Combined with a high-precision positioning column and a bearing-supported rotating measuring structure, the dial indicator rotates smoothly around the reference axis, enabling rapid and accurate measurement of the runout of the separation finger tip.

[0017] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the dial gauge structure of this utility model; Figure 3 This is a schematic diagram of the top structure of the workbench of this utility model; Figure 4 This is a schematic diagram of the support portion of this utility model; Figure 5 This is a partial structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the pressing mechanism of this utility model.

[0019] Figure label: 1. Workbench; 2. Work slot; 3. Support unit; 31. Support cylinder; 32. Support plate; 33. Support block; 34. Mounting hole; 4. Lifting mechanism; 41. Lifting cylinder; 42. Control switch; 43. Lifting connecting block; 44. Lifting slide; 45. Lifting column; 5. Pressing mechanism; 51. L-shaped positioning block; 52. Sliding column; 53. Rotating pressing component; 531. Lever-type pressing block; 532. Connecting strip; 533. Pressing pin; 6. Dial indicator; 7. Rotating component; 71. Connecting arm; 72. Bottom indicator holder; 73. First bearing; 74. Drive handle; 75. Rotating block; 8. Positioning column. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] It should be noted that the structures not described in this utility model do not involve the design points and improvement directions of this utility model, and can all adopt existing technologies known to those skilled in the art.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] See attached document Figure 1-6 A diaphragm spring end face runout detection device for a clutch pressure plate assembly, comprising: Workbench 1, with a work slot 2 provided in the middle of its surface; Support part 3 is disposed in the working groove 2 and is used to support the clutch pressure plate assembly to be tested; The lifting mechanism 4 is installed below the workbench 1 and located at the bottom of the support part 3; Multiple clamping mechanisms 5 are arranged in a ring array around the support part 3. The clamping mechanism 5 is driven to be connected to the lifting mechanism 4, so that when the lifting mechanism 4 is activated, the clamping mechanism 5 can be driven to apply a vertically downward clamping force to the outer edge of the clutch pressure plate assembly placed on the support part 3. The measuring unit includes a dial indicator 6, a rotating component 7, and a positioning post 8. The dial indicator 6 is mounted on the top of the positioning post 8 via the rotating component 7. The positioning post 8 is detachably inserted into the central positioning hole of the support part 3, so that the probe of the dial indicator 6 can contact the separating finger end face of the compressed diaphragm spring. By rotating the rotating component 7, the dial indicator 6 is driven to rotate around the axis of the positioning post 8 to complete the detection of the runout of the separating finger end face.

[0027] In this embodiment, the operator places the clutch pressure plate assembly equipped with a diaphragm spring on the upper surface of the support 3. After the device is started, the lifting mechanism 4 is activated, driving the multiple pressing mechanisms 5 in the outer annular array to move downwards synchronously, pressing the outer edge of the clutch pressure plate assembly to fix it and simulate the working state. Under this pressing force, the inner ring of the diaphragm spring, i.e., the release finger, will produce the expected reverse elastic deformation, changing from bulging to concave.

[0028] Subsequently, the operator inserts the positioning pin 8 of the measuring unit into the positioning hole in the center of the support unit 3. The position of the dial indicator 6 is adjusted so that its probe contacts the end face of any separating finger and is pre-pressed with a certain stroke. Then, the dial indicator 6 is zeroed. The rotating part 7 is smoothly rotated by hand, causing the dial indicator 6 to rotate one revolution around the axis of the positioning pin 8. During this process, the probe of the dial indicator 6 will pass through the end faces of all separating fingers. The difference between the maximum and minimum readings of its pointer is the runout of the diaphragm spring separating finger's end face. By observing and judging whether this value is within the preset tolerance range, the operator can quickly and accurately determine the product quality.

[0029] Through the above-described structure, this invention enables rapid, online detection of the diaphragm spring release finger tip surface movement under simulated real working conditions, effectively ensuring the factory quality of the clutch pressure plate assembly and improving detection efficiency and consistency.

[0030] The support part 3 includes a support cylinder 31 and a replaceable support plate 32; The support plate 32 is fixedly installed on the top of the support cylinder 31 by fasteners. Its top surface forms a positioning surface that matches the bottom structure of the clutch pressure plate assembly to be tested. The bottom of the support cylinder 31 is connected to the support block 33 in the workbench 1. A mounting groove penetrating its thickness is provided in the center of the support plate 32, and a mounting hole 34 is provided in the middle of the mounting groove; The bottom of the support cylinder 31 has an axially accommodating space, and at least a portion of the lifting mechanism 4 is disposed within this accommodating space. In this embodiment, the support cylinder 31 serves as the main load-bearing structure, and its interior is provided with an axially penetrating accommodating space. This space is used to accommodate and install the drive unit of the lifting mechanism 4, such as the cylinder body of a pneumatic or hydraulic cylinder, making the overall structure compact.

[0031] The support plate 32 is detachably fixed to the top of the support cylinder 31 by bolts. The core purpose of this split design is to allow for quick replacement of the support plate 32 to match different models and sizes of clutch pressure plate assemblies. The top surface of each support plate 32 is precision machined to form a positioning surface that matches the bottom shape of a specific model of pressure plate assembly, thereby achieving precise positioning and stable support for the pressure plate assembly during testing and ensuring the uniformity of the testing benchmark.

[0032] At the geometric center of the support plate 32, a high-precision mounting hole 34 is machined. This mounting hole 34 forms a precision clearance fit or transition fit with the positioning pin 8 of the measuring unit, providing a precise reference axis for the rotation measurement of the dial indicator 6. This is the key to ensuring the accuracy of the end face runout measurement.

[0033] The lifting mechanism 4 includes a lifting cylinder 41 as a power source; The cylinder body of the lifting cylinder 41 is fixed to the bottom of the workbench 1, and its control switch 42 is located on the edge of the workbench 1. The piston rod end of the lifting cylinder 41 is connected to a lifting connecting block 43; The side wall of the support cylinder 31 is provided with a vertical lifting groove 44. The lifting connecting block 43 passes through the lifting groove 44 and extends into the receiving space of the support cylinder 31, and is connected to the end of the piston rod, so that the lifting connecting block 43 can slide vertically along the lifting groove 44. The other end of the lifting block 43 is connected to the bottom end of the lifting column 45, and the top end of the lifting column 45 is connected to the pressing mechanism 5 via a transmission connection. In this embodiment, the lifting mechanism 4 is the core power component that drives the pressing mechanism 5 to perform pressing and releasing actions. It preferably uses a lifting cylinder 41 as the driving source. The cylinder body of the lifting cylinder 41 is reliably fixed to the bottom surface of the workbench 1, maintaining the stability of the overall structure. The control switch 42 of the lifting cylinder 41 is conveniently located on the operating side of the workbench 1 for easy triggering by the operator. The piston rod of the lifting cylinder 41 extends upward into the receiving space of the support cylinder 31, and its end is connected to a lifting connecting block 43. To ensure that the connecting block can move strictly in the vertical direction and remain stable during movement, a lifting groove 44 is machined on the side wall of the support cylinder 31. A part of the lifting connecting block 43 passes through this lifting groove 44, so that it can connect with the internal piston rod and transmit power to the outside of the support cylinder 31. At the same time, its movement trajectory is precisely defined by the lifting groove 44, which plays a good guiding role.

[0034] The lifting connecting block 43 is located outside the support cylinder 31 and is connected to the bottom end of the lifting column 45. The number of lifting columns 45 corresponds to the number of pressing mechanisms 5. When the lifting cylinder 41 is activated, the linear motion of the piston rod is synchronously transmitted to all lifting columns 45 through the lifting connecting block 43, thereby driving the ring-arranged pressing mechanisms 5 to perform synchronous pressing or releasing actions.

[0035] This structure is cylinder-driven, providing ample power and easy control, making it suitable for frequent operation in industrial environments. A single power source, coupled with a lifting connecting block 43, synchronously drives all clamping mechanisms 5, ensuring uniform and consistent clamping force, crucial for accurate test results. The design of the lifting slide 44 and the connecting block not only achieves power transmission but also provides guidance, improving the stability and service life of moving parts. This structure offers excellent scalability. By designing different forms of lifting connecting blocks 43, such as cross-shaped, star-shaped, or multi-arm-shaped, and correspondingly increasing the number of lifting slides 44 on the support cylinder 31 wall, it can flexibly adapt to different layouts of clamping mechanisms 5, such as three-jaw, four-jaw, or even six-jaw, enabling the testing device to meet the clamping requirements of various product specifications, demonstrating strong versatility.

[0036] The pressing mechanism 5 includes an L-shaped positioning block 51, which is connected to the support cylinder 31 on its side. The bottom of the L-shaped positioning block 51 is provided with a lifting groove that is slidably connected to the lifting column 45. A sliding column 52 is slidably connected in the lifting groove. The sliding column 52 is connected to the lifting column 45. A rotating pressing member 53 is connected to the top of the sliding column 52. In this embodiment, when the lifting cylinder 41 at the bottom is working, it will extend to the top, thereby driving the lifting column 45 and the sliding column 52 to push upward. The upward push of the sliding column 52 will drive the rotating pressing member 53 to perform downward pressing and lifting operations.

[0037] The rotating clamping component 53 includes a lever-type clamping block 531; The lever-type pressure block 531 has one end of a symmetrically arranged connecting strip 532 hinged to the middle of the lever-type pressure block 531 via a pivot, and the other end of the connecting strip 532 is hinged to the top mounting block of the L-shaped positioning block 51 via a pivot, so that the lever-type pressure block 531 can pivot around the connecting strip 532. The rear end of the lever-type pressure block 531 is rotatably connected to the top end of the sliding column 52 via a pin. The front end of the lever-type pressure block 531 is provided with a replaceable clamping pin 533; When the sliding column 52 moves upward under the drive of the lifting column 45, it pushes the rear end of the lever-type pressure block 531, causing the front end of the lever-type pressure block 531 to swing downward around its central pivot, thereby driving the clamping pin 533 to press against the outer edge of the clutch pressure plate assembly. In this embodiment, the rear end of the lever-type pressure block 531 is connected to the pin at the top of the sliding column 52, forming a power input point; its front end is machined with a threaded hole for assembling a replaceable clamping pin 533. By replacing clamping pins 533 of different lengths or with different head shapes, pressure plate assemblies of different thicknesses or structures can be adapted, enhancing the versatility of the device. During operation, the lifting cylinder 41 is activated, driving the lifting column 45 to move upward, which in turn pushes the sliding column 52 upward. The top end of the sliding column 52 then pushes the rear end of the lever-type pressure block 531, providing it with an upward force. Because the middle of the lever-type pressure block 531 is rotatably connected to the connecting strip 532, its front end will generate a downward movement, thereby driving the clamping pin 533 to press precisely and stably against the outer flange of the clutch pressure plate assembly with a vertically downward force. This design efficiently converts a vertically upward input motion into a vertically downward clamping action through a compact lever mechanism, with ingenious structure and high force transmission efficiency.

[0038] The rotating component 7 includes a connecting arm 71. One end of the connecting arm 71 is rotatably connected to the bottom frame 72 of the dial indicator 6. The top of the bottom frame 72 is rotatably connected to a first bearing 73. A drive handle 74 is connected to the outside of the first bearing 73. The other end of the connecting arm 71 is connected to a rotating block 75. The middle of the rotating block 75 is connected to the positioning column 8 through a second bearing. In this embodiment, when runout detection is required, the positioning column 8 is inserted into the middle of the diaphragm spring, the pointer position of the dial indicator 6 is adjusted, and then the dial indicator 6 is rotated one revolution along the second bearing by the drive handle 74 to complete the detection operation. The rotating structure supported by the bearing has low motion resistance and high coaxial accuracy, which fundamentally ensures the measurement accuracy of the end face runout.

[0039] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A diaphragm spring end face runout detection device for a clutch pressure plate assembly, characterized in that: include A workbench (1) with a work slot (2) in the middle of its surface; The support part (3) is provided in the working groove (2) to support the clutch pressure plate assembly to be tested; The lifting mechanism (4) is installed below the workbench (1) and located at the bottom of the support part (3); Multiple clamping mechanisms (5) are arranged in a ring array around the support (3). The clamping mechanism (5) is driven to be connected to the lifting mechanism (4), so that when the lifting mechanism (4) is activated, the clamping mechanism (5) can be driven to apply a vertically downward clamping force to the outer edge of the clutch pressure plate assembly placed on the support (3). The measuring unit includes a dial indicator (6), a rotating component (7), and a positioning column (8). The dial indicator (6) is mounted on the top of the positioning column (8) via the rotating component (7). The positioning column (8) is detachably inserted into the central positioning hole of the support part (3), so that the probe of the dial indicator (6) can contact the separation finger end face of the compressed diaphragm spring. By rotating the rotating component (7), the dial indicator (6) is driven to rotate around the axis of the positioning column (8) to complete the detection of the runout of the separation finger end face.

2. The diaphragm spring end face runout detection device for a clutch pressure plate assembly according to claim 1, characterized in that: The support part (3) includes a support cylinder (31) and a replaceable support plate (32). The support plate (32) is fixedly installed on the top of the support cylinder (31) by fasteners. Its top surface forms a positioning surface that matches the bottom structure of the clutch pressure plate assembly to be tested. The bottom of the support cylinder (31) is connected to the support block (33) in the workbench (1). The support plate (32) has a mounting groove that extends through its thickness in the center, and a mounting hole (34) is opened in the middle of the mounting groove. The bottom of the support cylinder (31) has an axial receiving space, and at least a portion of the lifting mechanism (4) is disposed within the receiving space.

3. The diaphragm spring end face runout detection device for a clutch pressure plate assembly according to claim 2, characterized in that: The lifting mechanism (4) includes a lifting cylinder (41) as a power source. The cylinder body of the lifting cylinder (41) is fixed to the bottom of the workbench (1), and its control switch (42) is located on the edge of the workbench (1). The piston rod end of the lifting cylinder (41) is connected to a lifting connecting block (43). The side wall of the support cylinder (31) is provided with a vertical lifting groove (44). The lifting connecting block (43) passes through the lifting groove (44) and extends into the receiving space of the support cylinder (31), and is connected to the end of the piston rod, so that the lifting connecting block (43) can slide vertically along the lifting groove (44). The other end of the lifting block (43) is connected to the bottom end of the lifting column (45), and the top end of the lifting column (45) is connected to the pressing mechanism (5) in a transmission manner.

4. The diaphragm spring end face runout detection device for a clutch pressure plate assembly according to claim 3, characterized in that: The pressing mechanism (5) includes an L-shaped positioning block (51), the side of which is connected to the support cylinder (31). The bottom of the L-shaped positioning block (51) is provided with a lifting groove that is slidably connected to the lifting column (45). A sliding column (52) is slidably connected in the lifting groove. The sliding column (52) is connected to the lifting column (45). The top of the sliding column (52) is connected to a rotating pressing member (53).

5. The diaphragm spring end face runout detection device for a clutch pressure plate assembly according to claim 4, characterized in that: The rotating clamping element (53) includes a lever-type clamping block (531). The middle part of the lever-type pressure block (531) is hinged to one end of a symmetrically arranged connecting strip (532) via a pivot, and the other end of the connecting strip (532) is hinged to the top mounting block of the L-shaped positioning block (51) via a pivot, so that the lever-type pressure block (531) can pivot around the connecting strip (532). The rear end of the lever-type pressure block (531) is rotatably connected to the top end of the sliding column (52) via a pin. The front end of the lever-type pressure block (531) is provided with a replaceable clamping pin (533). When the sliding column (52) moves upward under the drive of the lifting column (45), it pushes the rear end of the lever-type pressure block (531), causing the front end of the lever-type pressure block (531) to swing downward around the central pivot, thereby driving the clamping pin (533) to press against the outer edge of the clutch pressure plate assembly.

6. The diaphragm spring end face runout detection device for a clutch pressure plate assembly according to claim 1, characterized in that: The rotating component (7) includes a connecting arm (71), one end of which is rotatably connected to the bottom frame (72) of the dial indicator (6), the top of the bottom frame (72) is rotatably connected to a first bearing (73), the outside of the first bearing (73) is connected to a drive handle (74), the other end of the connecting arm (71) is connected to a rotating block (75), and the middle of the rotating block (75) is connected to the positioning column (8) through a second bearing.

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