A friction disc dismounting tool and a method of use

Abstract

The application belongs to the technical field of grounding devices, and particularly relates to a friction disc dismounting tool and a use method. The friction disc assembly can be dismounted without damage, and the tool is convenient for maintenance and replacement of individual components to save cost. The tool comprises a frame which is integrally formed in the shape of a letter U and comprises a left vertical plate, a right vertical plate and a bottom plate. A longitudinal clamping mechanism is rotatably connected to the top of the inner wall of the left vertical plate and the right vertical plate. The longitudinal clamping mechanism is used for clamping and pressing the friction disc body. A transverse clamping mechanism is slidably arranged on the left vertical plate and the right vertical plate. The transverse clamping mechanism is used for clamping the friction disc base and ejecting and separating from the friction disc body. The friction disc dismounting tool and the use method can dismount the friction disc without damage, reduce maintenance cost, and replace the damaged components during the maintenance project, and the remaining undamaged components can be used again.

Description

Technical Field

[0001] This invention belongs to the technical field of grounding devices, and in particular relates to a friction disc disassembly tool and its usage method. Background Technology

[0002] For grounding devices on low-floor vehicles, the friction disc assembly process is a crucial control point. The friction disc assembly typically consists of the friction disc body, the friction disc base, and connecting parts, with an interference fit.

[0003] Given the critical and challenging nature of the friction disc assembly process, once assembled, the friction disc cannot be disassembled. Currently, bearing pullers are used for disassembly, but the friction disc is made of copper, which is highly susceptible to deformation, and the friction disc base is made of aluminum, which is prone to wear. Disassembly directly renders the parts unusable. The friction disc is a core component of the grounding device, requiring very high assembly precision. When upgrading or replacing parts, reassembling after testing failures, or during subsequent product maintenance, the entire device must be scrapped, resulting in significant waste and increased costs. Therefore, a friction disc disassembly solution is designed to address the issue of the friction disc assembly's inability to be disassembled. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a friction disc assembly that can be disassembled without damage, facilitating maintenance and cost-effective replacement of individual components, along with a tooling and method for disassembling the friction disc.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a friction disc disassembly fixture, including a frame, wherein the frame comprises a left upright plate, a right upright plate, and a base plate integrally formed in a U-shape; a longitudinal clamping mechanism is rotatably connected to the top of the inner wall of the left and right upright plates; the longitudinal clamping mechanism is used to clamp and press the friction disc body; a transverse clamping mechanism is slidably provided on the left and right upright plates; the transverse clamping mechanism is used to clamp the friction disc base and push it out and separate relative to the friction disc body.

[0006] Furthermore, the lateral clamping mechanism moves upward from the base plate to above the longitudinal clamping mechanism, and the longitudinal clamping mechanism is located inside the lateral clamping mechanism, with travel space I and travel space II formed between the lateral clamping mechanism and the longitudinal clamping mechanism.

[0007] Furthermore, the longitudinal clamping mechanism includes two sets of pull plate assemblies, which are symmetrically and rotatably installed on the inner walls of the left and right vertical plates; the two sets of pull plate assemblies rotate towards each other to form a pull plate circular opening, which is used to clamp and press the friction disc body.

[0008] Furthermore, each set of the pull plate assembly includes two pull plate rotating arms and one pull plate clamping arm integrally formed in the shape of the letter U. The pull plate rotating arms are rotatably installed on the left and right upright plates by countersunk bolts and nuts I. The pull plate clamping arm has a semi-circular pull plate opening. The two pull plate openings are joined together to form a pull plate circular opening.

[0009] Furthermore, the transverse clamping mechanism includes two sets of push plate assemblies and one set of push plate base supports. The push plate base supports are placed between the left and right vertical plates. The two sets of push plate assemblies are symmetrically placed on the outer walls of the left and right vertical plates, respectively. The push plate base supports are movably connected to the two sets of push plate assemblies and can move up and down along the left and right vertical plates. The two sets of push plate assemblies rotate towards each other to form a push plate circular opening. The push plate circular opening is used to clamp the friction disc base. The push plate assemblies are located above the longitudinal clamping mechanism, and the push plate base supports are located below the longitudinal clamping mechanism. The push plate base supports move upward under force and push out the friction disc base.

[0010] Furthermore, each set of push plate assemblies includes two push plate rotating arms and one push plate clamping arm integrally formed in a U-shape; the push plate base includes two base support connecting plates and one base support force plate integrally formed; the push plate rotating arms are rotatably connected to the base support connecting plates and can move laterally on the base support connecting plates; the push plate clamping arm has a semi-circular push plate opening; the two push plate openings are joined together to form a push plate circular opening.

[0011] Furthermore, the bottom support connecting plate has two symmetrically arranged moving grooves in the transverse direction, and each of the two moving grooves has an engaging groove at its adjacent end; the push plate rotating arm rotates on the moving groove and can move laterally along the moving groove.

[0012] Furthermore, the push plate rotating arm is rotatably mounted in the moving groove by bolts and nuts II; the bolt can move laterally in the moving groove; the bolt is engaged in the engaging groove.

[0013] Furthermore, the two long sides of the base support plate are concave arc surfaces; the concave arc surfaces are used to avoid the nut I and the pull plate rotating arm when the base support plate rises; the distance between the two short sides of the base support plate is greater than the width of the left and right upright plates.

[0014] A method for using a friction disc disassembly fixture includes the following steps: S1. Place the workpiece on a flat workbench. Adjust the two sets of pull plate assemblies of the longitudinal clamping mechanism respectively. Rotate the first set of pull plate assemblies until the pull plate clamping arm is parallel to the base plate. The second set of pull plate assemblies is assumed to have the pull plate clamping arm perpendicular to the base plate. S2. Engage the friction disc body into the pull plate opening of the first set of pull plate assemblies, and rotate the second set of pull plate assemblies until the pull plate clamping arm is parallel to the base plate. At this time, the second set of pull plate openings also engage with the friction disc body, forming a pull plate circular opening that clamps and presses the friction disc body. S3. Lift the horizontal clamping mechanism and move it upward from the bottom plate. When it reaches the position of the longitudinal clamping mechanism, the two sets of push plate assemblies rotate towards each other until they are above the pull plate clamping arm. The push plate clamping arm is parallel to the pull plate clamping arm. The two sets of push plate assemblies move towards each other along the moving groove until the two push plate openings engage with the friction disc base. At this time, the bolt is located above the engaging groove, and the circular opening of the push plate clamps the friction disc base. S4. Place the jack on the base plate, with the telescopic end of the jack against the base support plate. Press the jack handle and slowly push the base support plate upward. During the upward movement of the base support plate, the locking groove contacts the bolt. As it continues to rise, the circular opening of the push plate clamps the friction disc base and lifts it up. At this time, the friction disc body is pressed and fixed by the circular opening of the tension plate until the friction disc base separates from the friction disc body and is ejected. S5. The friction disc body and friction disc base have been disassembled.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Currently, existing friction disc disassembly methods are prone to damage and can only result in the entire disc being scrapped, leading to significant waste and increased costs. This application presents a friction disc disassembly fixture and method that allows for non-destructive disassembly of the friction disc, reducing maintenance costs. During maintenance, damaged parts can be replaced individually, while remaining undamaged parts can be reused.

[0016] The longitudinal clamping mechanism is used to clamp and press the friction disc body, while the transverse clamping mechanism is used to clamp the friction disc base and eject it relative to the friction disc body. The transverse clamping mechanism moves upward relative to the longitudinal clamping mechanism, while the friction disc body remains stationary. The friction disc base is ejected from the friction disc body, and the entire ejection process does not damage the friction disc. The longitudinal clamping mechanism opens and closes in a forward and backward motion, while the transverse clamping mechanism opens and closes in a left and right motion. This two-way intersecting motion direction ensures the closed stability of both mechanisms during movement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 For the present invention Figure 1 Right side structural diagram; Figure 4 This is a three-dimensional structural diagram of the present invention and the friction disk. Figure 5 For the present invention Figure 4 Front view structural diagram; Figure 6 For the present invention Figure 4 Left side structural diagram; Figure 7 This is an exploded view of the longitudinal clamping mechanism of the present invention; Figure 8 This is an exploded view of the transverse clamping mechanism of the present invention; Figure 9 This is a schematic diagram of the left and right vertical plates of the present invention; Figure 10 This is a schematic diagram of the mold closing structure of the two pull plate components of the present invention; Figure 11 This is a schematic diagram of the mold closing structure of the push plate assembly of the present invention; Figure 12 This is a schematic diagram of the base plate structure of the present invention; Figure 13 For the present invention Figure 5 Schematic diagram of the separation structure between the friction disc body and the friction disc base. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Therefore, the following detailed description of embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort prior to the description are within the scope of protection of this invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Figure 1 The horizontal clamping mechanism is in the default state, i.e., at the bottom plate; the vertical clamping mechanism is in the default state, i.e., located on both sides of the left and right vertical plates. Figure 2 The horizontal clamping mechanism is in the default state, i.e., at the bottom plate; the vertical clamping mechanism is in the closed state, i.e., the two sets of pull plate assemblies rotate towards each other to form a circular opening for the pull plate. Figure 4 The longitudinal clamping mechanism clamps and presses the friction disc body, the transverse clamping mechanism clamps the friction disc base, and the telescopic end of the jack has already pressed against the bottom support plate. Figure 10 The two pull plate openings are joined together to form a circular pull plate opening; Figure 11 The two push plate openings are joined together to form a circular push plate opening.

[0025] like Figure 1-12 As shown: A friction disc disassembly fixture includes a frame 1, which comprises a left upright plate 11, a right upright plate 12, and a base plate 13 integrally formed in a U-shape. A longitudinal clamping mechanism 2 is rotatably connected to the top of the inner walls of the left and right upright plates 11 and 12. The longitudinal clamping mechanism 2 clamps and presses the friction disc body 4. A transverse clamping mechanism 3 slides on the left and right upright plates 11 and 12. The transverse clamping mechanism 3 clamps the friction disc base 5 and pushes it out relative to the friction disc body 4. A jack 6 is placed on the base plate 13, which has a base plate groove 131. The base plate groove 131 positions and fixes the jack 6, pushes the transverse clamping mechanism 3 upward, and keeps the longitudinal clamping mechanism 2 clamping and pressing the friction disc body 4 stationary. The transverse clamping mechanism 3 pushes the friction disc base 5 out of the friction disc body 4.

[0026] The transverse clamping mechanism 3 moves upward from the base plate 13 to above the longitudinal clamping mechanism 2. The longitudinal clamping mechanism 2 is located inside the transverse clamping mechanism 3, and a travel space I 14 and a travel space II 15 are formed between the transverse clamping mechanism 3 and the longitudinal clamping mechanism 2. The travel space I 14 is the distance space above the transverse clamping mechanism 3 away from the longitudinal clamping mechanism 2. The maximum distance of the travel space I 14 is when the friction disk base 5 separates from the friction disk body 4. The travel space II 15 is the distance space below the transverse clamping mechanism 3 close to the longitudinal clamping mechanism 2. The minimum distance of the travel space II 15 is when the friction disk base 5 separates from the friction disk body 4. The relationship between the travel space I 14 and the travel space II 15 is that the distance is larger and smaller when ejected, and smaller and larger when not ejected.

[0027] The longitudinal clamping mechanism 2 includes two sets of pull plate assemblies 21, which are symmetrically and rotatably mounted on the inner walls of the left vertical plate 11 and the right vertical plate 12. The two sets of pull plate assemblies 21 rotate towards each other to form a pull plate circular opening 214, which is used to clamp and press the friction disc body 4. When the two sets of pull plate assemblies 21 rotate in opposite directions, the pull plate circular opening 214 separates into two semi-circular pull plate openings 213. Vertical guide plates 7 are symmetrically arranged at the center of the left vertical plate 11 and the right vertical plate 12. The purpose of the vertical guide plates 7 is to limit the two sets of pull plate assemblies 21 after they rotate towards each other. When the two sets of pull plate assemblies 21 contact the vertical guide plates 7 respectively, the two sets of pull plate assemblies 21 are in the mold closing state, which can ensure that the pull plate circular opening 214 is coaxial with the friction disk body 4 and that the upper and lower surfaces of the formed pull plate circular opening 214 are flat. A horizontal guide plate 8 is provided on the left upright plate 11 and the right upright plate 12 below the vertical guide plate 7. The purpose of the horizontal guide plate 8 is to limit the two sets of pull plate assemblies 21 after they rotate in opposite directions. When the two sets of pull plate assemblies 21 contact the horizontal guide plate 8 respectively, the two sets of pull plate assemblies 21 are in the open state. The two sets of pull plate assemblies 21 are located below the top surface of the left upright plate 11 and the right upright plate 12 or flush with the top surface of the left upright plate 11 and the right upright plate 12.

[0028] Each pull plate assembly 21 includes two pull plate rotating arms 211 and one pull plate clamping arm 212 integrally formed in a U-shape. The pull plate rotating arms 211 are rotatably mounted on the left vertical plate 11 and the right vertical plate 12 by countersunk bolts 218 and nuts I 219. The pull plate clamping arm 212 has a semi-circular pull plate opening 213. A rubber layer 22 installed on the pull plate clamping arm 212 is provided at the semi-circumference of the pull plate opening 213. The rubber layer 22 prevents compression damage when pressing the friction disc body 4. The inner and outer walls of the pull plate rotating arms 211 and the pull plate clamping arm 212 are provided with pull plate arc surfaces I 215. The pull plate arc surfaces I 215 facilitate the smooth rotation of the pull plate assembly 21 towards each other or in the same direction, and at the same time prevent interference with the operation of other components. The pull plate rotating arms 211 away from the pull plate clamping arm 212 have symmetrical pull plate arc surfaces II 216 on both sides. The pull plate arc surfaces II 216 facilitate the pulling of the pull plate assembly 211. The plate assembly 21 rotates smoothly in opposite directions or in the same direction, while preventing interference with the operation of other components; the left vertical plate 11 and the right vertical plate 12 are provided with vertical plate mounting holes I16, and the outer walls of the left vertical plate 11 and the right vertical plate 12 are provided with vertical plate grooves 17 that communicate with the vertical plate mounting holes I16; the pull plate rotating arm 211 is provided with a pull plate mounting hole I217; the vertical plate mounting hole I16 and the pull plate mounting hole I217 are aligned to insert countersunk bolts 218, and the countersunk bolts... Bolt 218 is placed in the recessed groove 17 of the vertical plate and connected by nut I 219; the recessed groove 17 of the vertical plate accommodates the countersunk bolt 218 so that the walls of the left vertical plate 11 and the right vertical plate 12 are flat and the push plate assembly 31 moves up and down smoothly without obstruction; nut I 219 is located inside the left vertical plate 11 and the right vertical plate 12, and the top surface of the countersunk bolt 218 is flush with the outer surface of the left vertical plate 11 and the right vertical plate 12; the two pull plate openings 213 are joined to form a pull plate circular opening 214.

[0029] The transverse clamping mechanism 3 includes two sets of push plate assemblies 31 and one set of push plate base supports 32. The push plate base supports 32 are placed between the left vertical plate 11 and the right vertical plate 12. The two sets of push plate assemblies 31 are symmetrically placed on the outer walls of the left vertical plate 11 and the right vertical plate 12, respectively. The push plate base supports 32 are movably connected to the two sets of push plate assemblies 31 and can move up and down along the left vertical plate 11 and the right vertical plate 12. The two sets of push plate assemblies 31 rotate towards each other to form a push plate circular opening 311. The push plate circular opening 311 is used to clamp the friction disk base 5. The push plate assemblies 31 are located above the longitudinal clamping mechanism 2, and the push plate base supports 32 are located below the longitudinal clamping mechanism 2. The push plate base supports 32 move upward under force to push out the friction disk base 5.

[0030] Each push plate assembly 31 includes two push plate rotating arms 312 and one push plate clamping arm 313 integrally formed in a U-shape; the inner and outer walls of the push plate rotating arms 312 and the push plate clamping arm 313 are provided with push plate arc surfaces I 315, which facilitate the smooth rotation of the push plate assembly 31 towards each other or in a different direction, while preventing interference with the operation of other components; push plate arc surfaces II 316 are symmetrically provided on both sides of the end of the push plate rotating arms 312 away from the push plate clamping arm 313, which facilitate the smooth rotation of the push plate assembly 31 towards each other or in a different direction, while preventing interference with the operation of other components; the push plate base 32 includes two base base connecting plates 321 and one base base force plate 322 integrally formed; the push plate rotating arms 312 are rotatably connected to the base base connecting plates 321 and can move laterally on the base base connecting plates 321; the push plate clamping arm 313 has a semi-circular push plate opening 314. Two push plate openings 314 are joined together to form a push plate circular opening 311.

[0031] Two transversely symmetrical moving grooves 323 are provided on the bottom support connecting plate 321, and each of the two moving grooves 323 has a locking groove 324 at the adjacent end; two push plate assemblies 31 move towards each other in the moving grooves 323 to clamp the friction disc base 5; the push plate rotating arm 312 rotates on the moving grooves 323 and can move laterally along the moving grooves 323; the push plate rotating arm 312 is provided with a push plate mounting hole I 317; the push plate mounting hole I 317 is aligned with any position of the moving groove 323 and a bolt 325 is inserted and connected by a nut II 326.

[0032] The push plate rotating arm 312 is rotatably installed in the moving groove 323 by bolts 325 and nuts II 326; bolts 325 can move laterally in the moving groove 323; when the jack 6 is pneumatically raised, it pushes against the bottom support 32 of the support plate, causing bolts 325 to engage in the engaging groove 324.

[0033] The two long sides of the bottom support plate 322 are concave arc surfaces 327; the concave arc surfaces 327 are used to avoid the nut I 219 and the pull plate rotating arm 211 when the bottom support plate 322 rises; the distance between the two short sides of the bottom support plate 322 is greater than the width of the left upright plate 11 and the right upright plate 12.

[0034] A method for using a friction disc disassembly fixture includes the following steps: S1. Place the workpiece on a flat workbench. Adjust the two sets of pull plate assemblies 21 of the longitudinal clamping mechanism 2 respectively. Rotate the first set of pull plate assemblies 21 until the pull plate clamping arm 212 is parallel to the base plate 13. The second set of pull plate assemblies 21 is assumed to have the pull plate clamping arm 212 perpendicular to the base plate 13. S2. Engage the friction disc body 4 into the pull plate opening 213 of the first set of pull plate assembly 21, and rotate the second set of pull plate assembly 21 until the pull plate clamping arm 212 is parallel to the bottom plate 13. At this time, the second set of pull plate opening 213 is also engaged on the friction disc body 4, and the formed pull plate circular opening 214 clamps and presses the friction disc body 4. S3. Lift the transverse clamping mechanism 3 and move it upward from the base plate 13. When it reaches the position of the longitudinal clamping mechanism 2, the two sets of push plate assemblies 31 rotate towards each other to above the pull plate clamping arm 212 until the push plate clamping arm 313 is parallel to the pull plate clamping arm 212. The two sets of push plate assemblies 31 move towards each other along the moving groove 323 until the two push plate openings 314 engage with the friction disc base 5. At this time, the bolt 325 is located above the engaging groove 324, and the push plate circular opening 311 clamps the friction disc base 5. S4. Place the jack on the base plate 13. The telescopic end of the jack should be pressed against the base support plate 322. Press the jack handle to slowly push the base support plate 322 upward. During the upward movement of the base support plate 322, the locking groove 324 contacts the bolt 325. Continue to rise. The push plate circular opening 311 clamps the friction disc base 5 and lifts it up. At this time, the friction disc body 4 is pressed and fixed by the pull plate circular opening 214 until the friction disc base 5 separates from the friction disc body 4 and is pushed out. S5. The friction disc body 4 and the friction disc base 5 have been disassembled.

[0035] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications or variations to the present invention without departing from the technical concept of the present invention, and such modifications or variations naturally fall within the protection scope of the present invention.

Claims

1. A friction disc disassembly fixture, characterized in that: The frame (1) includes a left upright plate (11), a right upright plate (12), and a base plate (13) integrally formed in a U-shape. The top of the inner walls of the left vertical plate (11) and the right vertical plate (12) are rotatably connected to a longitudinal clamping mechanism (2); The longitudinal clamping mechanism (2) is used to clamp the pressure friction disc body (4); A transverse clamping mechanism (3) is slidably connected to the left upright plate (11) and the right upright plate (12); The transverse clamping mechanism (3) is used to clamp the friction disk base (5) and push out and separate relative to the friction disk body (4); The transverse clamping mechanism (3) includes two sets of push plate assemblies (31) and one set of push plate base (32). The push plate base (32) is placed between the left vertical plate (11) and the right vertical plate (12). The two sets of push plate assemblies (31) are symmetrically placed on the outer walls of the left vertical plate (11) and the right vertical plate (12). The push plate base (32) is movably connected to the two sets of push plate assemblies (31) and can move up and down along the left vertical plate (11) and the right vertical plate (12). The two sets of push plate assemblies (31) rotate towards each other to form a push plate circular opening (311), which is used to clamp the friction disk base (5). The push plate assembly (31) is located above the longitudinal clamping mechanism (2), and the push plate base (32) is located below the longitudinal clamping mechanism (2). The push plate base (32) moves upward under force and pushes out the friction disc base (5).

2. The friction disc disassembly fixture according to claim 1, characterized in that: The transverse clamping mechanism (3) moves upward from the base plate (13) to above the longitudinal clamping mechanism (2). The longitudinal clamping mechanism (2) is located inside the transverse clamping mechanism (3), and a travel space I (14) and a travel space II (15) are formed between the transverse clamping mechanism (3) and the longitudinal clamping mechanism (2).

3. The friction disc disassembly fixture according to claim 1, characterized in that: The longitudinal clamping mechanism (2) includes two sets of pull plate assemblies (21), which are symmetrically rotated and installed on the inner walls of the left vertical plate (11) and the right vertical plate (12); The two sets of pull plate assemblies (21) rotate towards each other to form a pull plate circular opening (214), which is used to clamp and press the friction disc body (4).

4. The friction disc disassembly fixture according to claim 3, characterized in that: Each of the pull plate assemblies (21) includes two pull plate rotating arms (211) and one pull plate clamping arm (212), which are integrally formed in the shape of a letter U. The pull plate rotating arms (211) are rotatably mounted on the left upright plate (11) and the right upright plate (12) by countersunk bolts (218) and nuts I (219). The pull plate clamping arm (212) has a semi-circular pull plate opening (213). The two pull plate openings (213) are joined together to form a pull plate circular opening (214).

5. The friction disc disassembly fixture according to claim 4, characterized in that: Each of the push plate assemblies (31) includes two push plate rotating arms (312) and one push plate clamping arm (313), and is integrally formed in a letter U shape; The push plate base (32) includes two base connecting plates (321) and a base bearing plate (322) integrally formed; The push plate rotating arm (312) is rotatably connected to the bottom support connecting plate (321) and can move laterally on the bottom support connecting plate (321); The push plate clamping arm (313) is provided with a semi-circular push plate opening (314). The two push plate openings (314) are joined together to form a push plate circular opening (311).

6. The friction disc disassembly fixture according to claim 5, characterized in that: The bottom support connecting plate (321) has two horizontally symmetrical moving grooves (323), and each of the two moving grooves (323) has a locking groove (324) at its adjacent end. The push plate rotating arm (312) rotates on the moving groove (323) and can move laterally along the moving groove (323).

7. The friction disc disassembly fixture according to claim 6, characterized in that: The push plate rotating arm (312) is rotatably mounted in the moving slot (323) by bolts (325) and nuts II (326); The bolt (325) can move laterally within the movable groove (323); The bolt (325) can be engaged in the engagement groove (324).

8. The friction disc disassembly fixture according to claim 5, characterized in that: The two long sides of the bottom support plate (322) are concave arc surfaces (327). The concave arc surface (327) is used to avoid the nut I (219) and the pull plate rotating arm (211) when the bottom support plate (322) rises. The distance between the two short sides of the bottom support plate (322) is greater than the width between the left upright plate (11) and the right upright plate (12).

9. A method for using a friction disc disassembly fixture, characterized in that: The friction disc disassembly fixture as described in claim 7 includes the following steps: S1. Place the workpiece on a flat workbench. Adjust the two sets of pull plate assemblies (21) of the longitudinal clamping mechanism (2) respectively. Rotate the first set of pull plate assemblies (21) until the pull plate clamping arm (212) is parallel to the base plate (13). The second set of pull plate assemblies (21) is initially set so that the pull plate clamping arm (212) is perpendicular to the base plate (13). S2. Engage the friction disc body (4) into the pull plate opening (213) of the first set of pull plate assembly (21), and rotate the second set of pull plate assembly (21) until the pull plate clamping arm (212) is parallel to the bottom plate (13). At this time, the second set of pull plate opening (213) is also engaged on the friction disc body (4), and the formed pull plate circular opening (214) clamps and presses the friction disc body (4). S3. When the horizontal clamping mechanism (3) is lifted and moved upward from the base plate (13) to the position of the longitudinal clamping mechanism (2), the two sets of push plate assemblies (31) rotate towards each other to above the pull plate clamping arm (212) until the push plate clamping arm (313) is parallel to the pull plate clamping arm (212). The two sets of push plate assemblies (31) move towards each other along the moving groove (323) until the two push plate openings (314) engage with the friction disc base (5). At this time, the bolt (325) is located above the engaging groove (324), and the push plate circular opening (311) clamps the friction disc base (5). S4. Place the jack on the base plate (13), with the telescopic end of the jack against the bottom support plate (322). Press the jack handle and slowly push the bottom support plate (322) upward. During the upward movement of the bottom support plate (322), the locking groove (324) contacts the bolt (325). Continue to rise, and the circular opening (311) of the push plate clamps the friction disc base (5) and rises. At this time, the friction disc body (4) is pressed and fixed by the circular opening (214) of the tension plate until the friction disc base (5) separates from the friction disc body (4) and is ejected. S5. The friction disc body (4) and the friction disc base (5) are disassembled.

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