Involute separate fork detection device

Abstract

This invention discloses an involute release fork detection device, mainly relating to the technical field of automotive parts inspection. It includes a clamping plate for use with the release fork. The release fork includes a center hole and an involute curve. The clamping plate has a detection hole for the release fork to pass through. The top of the detection hole has several sets of point detection mechanisms that work with the involute curve. Each point detection mechanism includes a slider slidably mounted on the clamping plate. A first spring is provided between the slider and the clamping plate. The end of the slider has a protrusion that contacts the involute curve. One side of the protrusion has a first inclined surface that contacts the release fork. One side of the slider has a first pointer extending to the outside of the clamping plate. The clamping plate has a slot that slidably connects to the first pointer. First graduation lines that work with the first pointer are provided on both sides of the slot. The advantages of this invention are: solving the problem of inconvenient release fork detection and improving the efficiency and quality of release fork detection.

Description

Technical Field

[0001] This invention relates to the technical field of automotive parts testing, specifically an involute separation fork testing device. Background Technology

[0002] If the actual machining of the involute profile of the release fork deviates significantly from the drawing, it will lead to excessive wear between the release bearing and the release fork, causing a series of malfunctions such as gearbox separation jamming and heavy separation.

[0003] To avoid the aforementioned malfunctions, it is necessary to inspect the involute profile of the release fork. Existing inspection methods generally involve using feeler gauges to measure the dimensions of the center holes at the beginning, middle, and end of the involute to determine whether the involute meets the drawing requirements. However, this method allows for a limited number of measurement points, which is insufficient to determine whether the entire involute is in a qualified state, thus failing to guarantee the quality of the inspection. Furthermore, it is difficult to find the actual positioning points, which is not conducive to feeler gauge measurement, resulting in low efficiency in inspecting the release fork. Summary of the Invention

[0004] The purpose of this invention is to provide an involute separation fork detection device, which solves the problem of inconvenient detection of separation forks and improves the efficiency and quality of separation fork detection.

[0005] To achieve the above objectives, the invention employs the following technical solution:

[0006] An involute separation fork detection device includes a clamping plate that cooperates with the separation fork. The separation fork includes a center hole and an involute. The clamping plate has a detection hole for the separation fork to pass through. The top of the detection hole has a plurality of point detection mechanisms that cooperate with the involute. The point detection mechanism includes a slider slidably disposed on the clamping plate. A first spring is provided between the slider and the clamping plate. The end of the slider has a protrusion that contacts the involute. The lower end face of the protrusion has a first inclined surface that contacts the separation fork. The upper side of the slider has a first pointer that extends to the outside of the clamping plate. The clamping plate has a slot that is slidably connected to the first pointer. The two sides of the slot have first scale lines that cooperate with the first pointer.

[0007] Furthermore, the two sets of adjacent point detection structures form an arc detection structure that works in conjunction with an involute. The arc detection structure also includes a pointing block. The card plate is provided with a through groove for the pointing block to rotate. Both ends of the two sliders are provided with connecting blocks. One end of the pointing block is rotatably connected to one of the connecting blocks. The other end of the pointing block is provided with a first adjustment groove that slides in contact with the other connecting block. A second pointer is provided on the lower pointing block. A second scale line is provided on the side of the pointing block that works in conjunction with the second pointer.

[0008] Furthermore, a feeding mechanism is provided on one side of the card plate. The feeding mechanism includes a base, a movable seat is rotatably connected to the base, a push plate is slidably connected to the movable seat, a positioning block is provided on the push plate and slidably connected to the center hole, a plurality of fixing blocks are slidably connected to the positioning block along the radial direction, the end of the fixing block is provided with an arc surface that contacts the center hole, and the positioning block is provided with a stepped surface that contacts the separation fork.

[0009] Furthermore, a second inclined surface is provided on one side of the fixing block to slide in contact with the central hole, and a second spring is provided between the fixing block and the positioning block.

[0010] Furthermore, the card plate is provided with symmetrical pin holes, and one side of the push plate is provided with a positioning pin that is slidably connected to the pin holes.

[0011] Furthermore, a locking block is slidably connected to the locking plate, one side of the locking block is provided with a third inclined surface that slides in contact with the separation fork, the other side of the locking block is provided with a vertical surface that contacts the separation fork, and a third spring is provided between the locking block and the locking plate.

[0012] Furthermore, the movable seat is provided with a cylinder, the movable end of the cylinder is connected to the push plate, the movable seat is provided with a guide hole, and one side of the push plate is provided with a guide block that is slidably connected to the guide hole.

[0013] Furthermore, the bottom of the movable seat is provided with a driven gear, the base is provided with a rotary motor, the movable end of the rotary motor is provided with a driving gear that meshes with the driven gear, one side of one of the guide blocks is provided with a baffle, and a limit block is slidably connected on the base, with one side of the limit block in contact with the baffle.

[0014] Furthermore, the limiting block is provided with a second adjustment groove, and a bolt is provided on one side of the limiting block. The bolt passes through the second adjustment groove and is threadedly connected to the base.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Pass the release fork through the detection hole provided in the card plate. The side of the release fork contacts the first inclined surface, causing the slider to slide inward until the side of the release fork contacts the end of the protrusion. At this time, the machining error of each point of the involute of the release fork can be measured according to the distance moved by the first pointer on the slider on the scale line. There is no need to use feeler gauges to find suitable fixed points to measure the machining error of each point, thereby improving the efficiency and quality of release fork detection. At the same time, a qualified area is set on the first scale line to facilitate the judgment of whether each point of the involute of the release fork meets the requirements.

[0017] 2. When the point detection structure performs point detection on the separation fork, it will drive the corresponding two sliders to slide inward. At the same time, through the two connecting blocks, they will contact the pointing block, causing the pointing block to rotate in the through groove. The tilt angle of the pointing block is the angle difference between the actual tangent and the theoretical tangent of the two points. By observing the value of the second pointer on the second scale line, it can be determined whether the surface finish between the two points of the involute meets the drawing requirements. Specifically, a qualified area can be set on the second scale line to facilitate observation of whether the surface finish of adjacent points of the involute of the separation fork meets the requirements.

[0018] 3. When it is necessary to test the release fork, move the release fork to the positioning block provided on the push plate. Through the cooperation between the center hole, the fixing block, the second inclined surface, the positioning block, the second spring, the release fork, the stepped surface, and the arc surface, the machining error of the center hole is compensated, so that the central axis of the center hole and the central axis of the positioning block are on the same straight line, and the different release forks are fixed on the positioning block.

[0019] 4. The drive gear is driven to rotate by a rotary motor. Since the movable seat is equipped with a driven gear that meshes with the drive gear, the movable seat is driven to rotate on the base, moving the separation fork to the side facing the card plate. The limiting block on one side of the movable seat contacts the baffle, which positions the movable seat at its stop position, so that the separation fork slides into the detection hole at a specified angle, improving the quality of the separation fork detection.

[0020] 5. The cylinder drives the push plate to slide on the movable seat, passing the separation fork through the clamping plate. With the help of the point detection device and the arc detection device, the separation fork is detected. At the same time, the cooperation between the positioning pin on the push plate and the pin hole on the clamping plate, and the cooperation between the guide block on the push plate and the guide hole on the movable seat, guide the movement of the push plate, thereby better positioning the separation fork to be detected.

[0021] 6. When the separating fork passes through the detection hole, it contacts the third inclined surface on one side of the clamping block, and the resulting force drives the clamping block to move to both sides and compresses the third spring, allowing the separating fork to pass through the detection hole smoothly. When the push plate drives the separating fork back, it contacts the separating fork through the vertical surface on the other side of the clamping block, restricting the separating fork from passing through the clamping block, causing the separating fork to fall off the positioning block and fall onto the conveyor belt below to move to the next process.

[0022] 7. When the angle at which the electric separation fork enters the detection hole is offset by the push plate, the bolts are loosened and the limit block on the base is moved to adjust the position of the limit block, thereby adjusting the angle at which the separation fork enters the detection hole, so that the separation fork slides into the detection hole at the specified angle, thus improving the quality of the separation fork detection. Attached Figure Description

[0023] Appendix Figure 1 This is an isometric view of the present invention.

[0024] Appendix Figure 2 This is a schematic diagram of the separation fork of the present invention.

[0025] Appendix Figure 3 This is an appendix to the present invention. Figure 2 A magnified view of part A in the middle.

[0026] Appendix Figure 4 This is a schematic diagram of the slider of the present invention.

[0027] Appendix Figure 5 This is a schematic diagram of the structure of the slider and the protrusion of the present invention.

[0028] Appendix Figure 6 This is a schematic diagram of the push plate of the present invention.

[0029] Appendix Figure 7 This is a schematic diagram of the structure of the fixing block of the present invention.

[0030] Appendix Figure 8 This is a schematic diagram of the positioning block of the present invention.

[0031] The labels shown in the attached diagram:

[0032] 1. Separating fork; 2. Clamping plate; 3. Center hole; 4. Involute; 5. Detection hole; 6. Slider; 7. First spring; 8. Protrusion; 9. First inclined surface; 10. First pointer; 11. Groove; 12. First scale line; 13. Pointing block; 14. Through groove; 15. Connecting block; 16. First adjustment groove; 17. Second pointer; 18. Second scale line; 19. Base; 20. Movable seat; 21. Push plate; 22. Positioning block; 23. Fixing block; 24. Arc surface; 25. Stepped surface; 26. Second inclined surface; 27. Second spring; 28. Pin hole; 29. ​​Positioning pin; 30. Locking block; 31. Third inclined surface; 32. Vertical surface; 33. Third spring; 34. Cylinder; 35. Guide hole; 36. Guide block; 37. Driven gear; 38. Rotary motor; 39. Driven gear; 40. Baffle; 41. Limiting block; 42. Second adjusting groove; 43. Bolt. Detailed Implementation

[0033] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0034] This invention provides an involute separation fork detection device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a clamping plate 2 used in conjunction with a separation fork 1. The separation fork 1 includes a center hole 3 and an involute 4. The clamping plate 2 has detection holes 5 through which the separation fork 1 passes. The shape of the detection holes 5 is designed to mimic the shape of the separation fork 1, facilitating the location of corresponding detection points and improving detection efficiency. The top of the detection holes 5 is equipped with several sets of point detection mechanisms that work in conjunction with the involute 4. By passing the separation fork 1 through the detection holes 5 on the clamping plate 2, the distance from the starting point of each point to the side of the actual separation fork 1 is measured using the point detection mechanisms. Subtracting this distance from the starting point to the theoretical separation fork 1 yields the machining error at the corresponding point. This eliminates the need to use feeler gauges to find suitable fixed points to measure the machining error at each point, thereby improving the efficiency and quality of separation fork 1 detection. The point detection mechanism includes a slider 6 slidably mounted on the clamping plate 2. A first spring 7 is provided between the slider 6 and the clamping plate 2. The end of the slider 6 has a protrusion 8 that contacts the involute 4. The lower end of the protrusion 8... The plate 2 has a first inclined surface 9 that contacts the separation fork 1. When the separation fork 1 is slid into the detection hole 5 provided in the plate 2, the side of the separation fork 1 contacts the first inclined surface 9, causing the slider 6 to slide inward until the side of the separation fork 1 contacts the end of the protrusion 8. Based on the sliding distance of the slider 6, the machining error of each point of the involute 4 of the separation fork 1 can be measured, thereby simplifying the operation steps of detecting the separation fork 1 and improving the efficiency and quality of the detection of the separation fork 1. The upper side of the slider 6 is provided with a first pointer 10 extending to the outside of the plate 2. The plate 2 is provided with a slot 11 that is slidably connected to the first pointer 10, which makes it easy for the staff to observe the position of the first pointer 10. The two sides of the slot 11 are provided with a first scale line 12 that works with the first pointer 10. Specifically, the theoretical qualified point can be set as the 0 mark of the first scale line 12, and a qualified area is set on the first scale line 12. It is possible to know whether each point of the involute 4 of the separation fork 1 meets the requirements without calculation.

[0035] Preferred, such as Figure 3 and Figure 4As shown, two sets of adjacent point detection structures form an arc detection structure used in conjunction with the involute 4. The arc detection structure checks whether the arc of each segment of the involute 4 meets the requirements, preventing unqualified separation forks 1 with poor surface finish from successfully passing the inspection, thus ensuring the inspection quality of the separation forks 1. The arc detection structure also includes a pointing block 13. The clamping plate 2 has a through groove 14 for the pointing block 13 to rotate, facilitating observation of the pointing block 13 by the operator. Each end of the two sliders 6 has a connecting block 15. One end of the pointing block 13 is rotatably connected to one of the connecting blocks 15, and the other end of the pointing block 13 has a first adjustment groove 16 that slides in contact with the other connecting block 15. When the point detection structure... 1. When performing point detection, the corresponding two sliders 6 will slide inward, and the two connecting blocks 15 will contact the pointing block 13 respectively, causing the pointing block 13 to rotate in the through groove 14. The tilt angle of the pointing block 13 is the angle difference between the actual tangent and the theoretical tangent of the two points, thereby determining whether the surface finish between the two points of the involute 4 meets the drawing requirements. The pointing block 13 located below is provided with a second pointer 17, and the side of the pointing block 13 is provided with a second scale line 18 that works with the second pointer 17. Specifically, the angle of the theoretical tangent can be set to 0 degrees, and a qualified area can be set on the second scale line 18. It is possible to know whether the surface finish of the adjacent points of the involute 4 of the separation fork 1 meets the requirements without calculation.

[0036] Preferred, such as Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, a feeding mechanism is provided on one side of the clamping plate 2 to perform positioning and feeding functions for the separating fork 1. The feeding mechanism includes a base 19, on which a movable seat 20 is rotatably connected. By rotating the movable seat 20 on the base 19, the separating fork 1 is moved to the side facing the clamping plate 2. A push plate 21 is slidably connected to the movable seat 20. By sliding the push plate 21 laterally on the movable seat 20, the separating fork 1 passes through the clamping plate 2. In conjunction with the point detection device and the arc detection device, the separating fork 1 is detected. A positioning block 22 is provided on the push plate 21 and slidably connected to the center hole 3. Several fixing blocks 23 are slidably connected in the radial direction. The end of each fixing block 23 is provided with an arc surface 24 that contacts the central hole 3. Specifically, the outer diameter of the arc surface 24 is smaller than the inner diameter of the central hole 3. The positioning block 22 is provided with a stepped surface 25 that contacts the separation fork 1. By sliding multiple fixing blocks 23 on the positioning block 22 until the arc surface 24 at its end contacts the central hole 3, the machining error of the central hole 3 is compensated, so that the central axis of the central hole 3 and the central axis of the positioning block 22 are on the same straight line. With the step surface 25 contacting one side of the separation fork 1, different separation forks 1 are fixed on the positioning block 22.

[0037] Preferred, such as Figure 8 As shown, one side of the fixing block 23 is provided with a second inclined surface 26 that slides in contact with the center hole 3, so that the fixing block 23 can pass through the center hole 3. A second spring 27 is provided between the fixing block 23 and the positioning block 22 to provide power for fixing the fixing block 23 to fix the center hole 3 of the separation fork 1.

[0038] Preferred, such as Figure 1 and Figure 6 As shown, the card plate 2 is symmetrically provided with pin holes 28, and the push plate 21 is provided with a positioning pin 29 that is slidably connected to the pin holes 28 on one side, which plays a guiding role in the movement of the push plate 21, thereby better positioning the separation fork 1 to be tested.

[0039] Preferred, such as Figure 6 As shown, a locking block 30 is slidably connected to the locking plate 2. One side of the locking block 30 is provided with a third inclined surface 31 that slides in contact with the separation fork 1, so that the separation fork 1 can pass smoothly through the detection hole 5. In conjunction with the point detection device and the arc detection device, the point and surface finish of the locking block 30 can be detected. The other side of the locking block 30 is provided with a vertical surface 32 that contacts the separation fork 1. A third spring 33 is provided between the locking block 30 and the locking plate 2.

[0040] Preferred, such as Figure 1 and Figure 6 As shown, the movable seat 20 is equipped with a cylinder 34. The movable end of the cylinder 34 is connected to the push plate 21. The cylinder 34 pushes the push plate 21 to slide on the movable seat 20, and drives the separation fork 1 to pass through the detection hole 5, thereby realizing the detection of the separation fork 1. The movable seat 20 is equipped with a guide hole 35. One side of the push plate 21 is equipped with a guide block 36 that is slidably connected to the guide hole 35. The guide block 36 guides the push plate 21 to slide on the base 19, preventing the push plate 21 from falling off the track and affecting the detection result of the separation fork 1.

[0041] Preferred, such as Figure 1 and Figure 6 As shown, the bottom of the movable seat 20 is provided with a driven gear 37, and the base 19 is provided with a rotary motor 38. The movable end of the rotary motor 38 is provided with a driving gear 39 that meshes with the driven gear 37. The rotary motor 38 drives the driving gear 39 to rotate, thereby causing the movable seat 20 to rotate on the base 19, moving the separation fork 1 to the side facing the card plate 2. One side of one of the guide blocks 36 is provided with a baffle 40. A limit block 41 is slidably connected on the base 19. One side of the limit block 41 contacts the baffle 40, which plays a role in positioning the stop position of the movable seat 20, so that the separation fork 1 slides into the detection hole 5 at a specified angle, improving the quality of detection of the separation fork 1.

[0042] Preferred, such as Figure 1 and Figure 6 As shown, the limiting block 41 is provided with a second adjustment groove 42, and a bolt 43 is provided on one side of the limiting block 41. The bolt 43 passes through the second adjustment groove 42 and is threadedly connected to the base 19. By loosening the bolt 43 and moving the limiting block 41 on the base 19, the position of the limiting block 41 is adjusted, thereby adjusting the angle at which the separation fork 1 enters the detection hole 5, so that the separation fork 1 slides into the detection hole 5 at a specified angle, thereby improving the quality of detection of the separation fork 1.

[0043] Example 1

[0044] This invention provides an involute separation fork detection device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a clamping plate 2 that works in conjunction with the separation fork 1. The separation fork 1 includes a center hole 3 and an involute 4. The clamping plate 2 is provided with a detection hole 5 through which the separation fork 1 passes. The shape of the detection hole 5 is specifically designed according to the shape of the separation fork 1 to facilitate finding the corresponding detection point and improve detection efficiency. When the slider 6 is in the initial position, the first pointer 10 is at the 0 mark. At this time, the position of the end face of the protrusion 8 is the theoretical point on the drawing.

[0045] The separation fork 1 is passed through the detection hole 5 provided in the clamping plate 2, and the side of the separation fork 1 contacts the first inclined surface 9, causing the slider 6 to slide inward until the side of the separation fork 1 contacts the end of the protrusion 8. At this time, the machining error of each point of the involute 4 of the separation fork 1 can be measured according to the distance moved by the first pointer 10 on the scale line. There is no need to use feeler gauges to find suitable fixed points to measure the machining error of each point, thereby improving the efficiency and quality of the separation fork 1 inspection. At the same time, a qualified area is set on the first scale line 12 to facilitate the judgment of whether each point of the involute 4 of the separation fork 1 meets the requirements. After the separation fork 1 passes through the detection hole 5, the slider 6 is driven to reset by the rebound force generated by the first spring 7, which facilitates the next inspection.

[0046] Example 2

[0047] Based on Example 1, such as Figure 3 and Figure 4As shown, two sets of adjacent point detection structures are combined into an arc detection structure. When the two first pointers 10 are at the 0 mark of the first scale line 12, the pointing block 13 is parallel to the theoretical tangent of the two adjacent points. At this time, the second pointer 17 points to the 0 degree of the second scale line 18. When the point detection structure performs point detection on the separation fork 1, it will drive the corresponding two sliders 6 to slide inward. At the same time, the two connecting blocks 15 will contact the pointing block 13 respectively, causing the pointing block 13 to rotate in the through groove 14. The tilt angle of the pointing block 13 is the angle difference between the actual tangent and the theoretical tangent of the two points. By checking the value of the second pointer 17 on the second scale line 18, it can be determined whether the surface finish between the two points of the involute 4 meets the drawing requirements. Specifically, a qualified area can be set on the second scale line 18 to facilitate observation of whether the surface finish of the adjacent points of the involute 4 of the separation fork 1 meets the requirements.

[0048] Example 3

[0049] Based on Example 1, such as Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, when the separation fork 1 needs to be tested, the separation fork 1 is moved onto the positioning block 22 on the push plate 21. The separation fork 1 contacts the second inclined surface 26 on one side of the fixed block 23 through the center hole 3, causing multiple fixed blocks 23 to move outward, so that the fixed blocks 23 can pass through the center hole 3. At the same time, the second spring 27 between the fixed block 23 and the positioning block 22 is compressed until one side of the separation fork 1 contacts the step surface 25. Then, the rebound force generated by the compression of the second spring 27 will drive the fixed block 23 to slide inward until the arc surface 24 at the end of the fixed block 23 contacts the center hole 3, thereby compensating for the machining error of the center hole 3, so that the central axis of the center hole 3 and the central axis of the positioning block 22 are on the same straight line, and the different separation forks 1 are fixed on the positioning block 22. Then, the drive gear 39 is driven to rotate by the rotary motor 38. Since the movable seat 20 is equipped with a drive gear 39, the drive gear 39 rotates. The driven gear 37 meshes with the gear 39, thereby driving the movable seat 20 to rotate on the base 19, moving the separation fork 1 to the side facing the clamping plate 2. The limiting block 41 on one side of the movable seat 20 contacts the baffle 40, which positions the movable seat 20 at its stop position, allowing the separation fork 1 to slide into the detection hole 5 at a specified angle, thus improving the quality of the detection of the separation fork 1. Subsequently, the cylinder 34 drives the push plate 21 to slide on the movable seat 20, passing the separation fork 1 through the clamping plate 2. With the help of the point detection device and the arc detection device, the separation fork 1 is detected. At the same time, the positioning pin 29 on the push plate 21 and the pin hole 28 on the clamping plate 2, as well as the guide block 36 on the push plate 21 and the guide hole 35 on the movable seat 20, guide the movement of the push plate 21, thereby better positioning the separation fork 1 to be detected.

[0050] When the separating fork 1 passes through the detection hole 5, it contacts the third inclined surface 31 on one side of the locking block 30. The resulting force causes the locking block 30 to move to both sides and compresses the third spring 33, allowing the separating fork 1 to pass through the detection hole 5 smoothly. After the separating fork 1 passes the locking block 30, the third spring 33 causes the locking block 30 to reset. When the push plate 21 drives the separating fork 1 to return, it contacts the separating fork 1 through the vertical surface 32 on the other side of the locking block 30, restricting the separating fork 1 from passing through the locking block 30. This causes the separating fork 1 to fall off the positioning block 22 and onto the conveyor belt below to move to the next process.

[0051] Example 4

[0052] Based on Example 3, such as Figure 1 and Figure 6As shown, when the angle at which the electric separation fork 1 enters the detection hole 5 is offset by the push plate 21, the position of the limit block 41 is adjusted by loosening the bolt 43 and moving the limit block 41 on the base 19, thereby adjusting the angle at which the separation fork 1 enters the detection hole 5, so that the separation fork 1 slides into the detection hole 5 at the specified angle, thereby improving the quality of the detection of the separation fork 1.

Claims

1. An involute separation fork detection device, comprising a clamping plate (2) used in conjunction with a separation fork (1), wherein the separation fork (1) comprises a center hole (3) and an involute (4), characterized in that: The card plate (2) is provided with a detection hole (5) through which the separation fork (1) passes. The top of the detection hole (5) is provided with a number of point detection mechanisms that cooperate with the involute (4). The point detection mechanism includes a slider (6) that is slidably disposed on the card plate (2). A first spring (7) is provided between the slider (6) and the card plate (2). The end of the slider (6) is provided with a protrusion (8) that contacts the involute (4). The lower end face of the protrusion (8) is provided with a first inclined surface (9) that contacts the separation fork (1). The upper side of the slider (6) is provided with a first pointer (10) that extends to the outside of the card plate (2). The card plate (2) is provided with a slot (11) that is slidably connected to the first pointer (10). The two sides of the slot (11) are provided with first scale lines (12) that cooperate with the first pointer (10). Two sets of adjacent point detection structures form an arc detection structure that works in conjunction with the involute (4). The arc detection structure also includes a pointing block (13). The card plate (2) is provided with a through groove (14) for the pointing block (13) to rotate. Both ends of the two sliders (6) are provided with connecting blocks (15). One end of the pointing block (13) is rotatably connected to one of the connecting blocks (15). The other end of the pointing block (13) is provided with a first adjustment groove (16) that slides in contact with the other connecting block (15). The pointing block (13) located below is provided with a second pointer (17). The side of the pointing block (13) is provided with a second scale line (18) that works in conjunction with the second pointer (17).

2. A device for detecting a involute decoupling fork according to claim 1, characterized in that: The card plate (2) is provided with a feeding mechanism on one side. The feeding mechanism includes a base (19). A movable seat (20) is rotatably connected to the base (19). A push plate (21) is slidably connected to the movable seat (20). A positioning block (22) is slidably connected to the center hole (3) on the push plate (21). Several fixing blocks (23) are slidably connected to the positioning block (22) radially. An arc surface (24) is provided at the end of the fixing block (23) that contacts the center hole (3). A stepped surface (25) is provided on the positioning block (22) that contacts the separation fork (1).

3. A device for detecting a separation of an involute dog clutch as claimed in claim 2, characterized in that: The fixing block (23) has a second inclined surface (26) on one side that slides in contact with the center hole (3), and a second spring (27) is provided between the fixing block (23) and the positioning block (22).

4. A device for detecting a separation of an involute dog clutch according to claim 2, characterized in that: The card plate (2) is provided with symmetrical pin holes (28), and the push plate (21) is provided with a positioning pin (29) that is slidably connected to the pin holes (28) on one side.

5. A device for detecting an involute decoupling fork according to claim 1, characterized in that: A locking block (30) is slidably connected to the locking plate (2). One side of the locking block (30) is provided with a third inclined surface (31) that slides in contact with the separation fork (1). The other side of the locking block (30) is provided with a vertical surface (32) that contacts the separation fork (1). A third spring (33) is provided between the locking block (30) and the locking plate (2).

6. The involute separation fork detection device according to claim 2, characterized in that: The movable seat (20) is provided with a cylinder (34), the movable end of the cylinder (34) is connected to the push plate (21), the movable seat (20) is provided with a guide hole (35), and a guide block (36) is provided on one side of the push plate (21) and is slidably connected to the guide hole (35).

7. The involute separation fork detection device according to claim 6, characterized in that: The bottom of the movable seat (20) is provided with a driven gear (37), and the base (19) is provided with a rotary motor (38). The movable end of the rotary motor (38) is provided with a driving gear (39) that meshes with the driven gear (37). A baffle (40) is provided on one side of one of the guide blocks (36). A limiting block (41) is slidably connected on the base (19), and one side of the limiting block (41) is in contact with the baffle (40).

8. The involute separation fork detection device according to claim 7, characterized in that: The limiting block (41) is provided with a second adjustment groove (42), and a bolt (43) is provided on one side of the limiting block (41). The bolt (43) passes through the second adjustment groove (42) and is threadedly connected to the base (19).

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