CN112815027B

CN112815027B - Correction method of clutch diaphragm spring

Info

Publication number: CN112815027B
Application number: CN202110135394.1A
Authority: CN
Inventors: 陈存陆
Original assignee: Longhua Auto Parts Deqing Co ltd
Current assignee: Longhua Auto Parts Deqing Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-05-17
Anticipated expiration: 2041-02-01
Also published as: CN112815027A

Abstract

The invention provides a method for correcting a clutch diaphragm spring, and belongs to the technical field of automobile accessories. The diaphragm spring comprises a plurality of first separating fingers, a second separating finger is arranged between every two adjacent first separating fingers, the outer ends of the first separating fingers and the outer ends of the second separating fingers are connected to a positioning outer ring, the inner end of each first separating finger is connected with an outer sliding sleeve, the inner end of each second separating finger is connected with an inner sliding sleeve, the inner sliding sleeve is sleeved on a valve post, the outer sliding sleeve is connected into the valve body in a sliding mode, the valve body is fixedly connected with an installation ring through a plurality of first spokes, a first push plate is fixedly arranged at the inner end of the valve post, the first push plate is fixedly connected with the valve post through a guide rod, the guide rod is connected onto the valve body in a sliding mode, a second push plate is fixedly arranged on the inner sliding sleeve, and the permanent deformation of the diaphragm spring is corrected by switching the deformation direction of the first separating fingers and the deformation direction of the second separating fingers. The invention has the advantages of longer service life, capability of correcting permanent deformation and the like.

Description

Correction method of clutch diaphragm spring

Technical Field

The invention belongs to the technical field of automobile accessories and relates to a method for correcting a clutch diaphragm spring.

Background

The diaphragm spring is used for a separating mechanism of the clutch, the middle part of the pressed side is connected with the separating fork, the other side can be abutted against a pressure plate of the clutch, the effects of uniform pressure distribution, good friction plate contact and uniform abrasion are achieved, and the diaphragm spring is widely applied to the clutch.

Besides, diaphragm spring still has ventilation cooling effect good, advantages such as the equilibrium is good, however, elastic component all has permanent deformation of certain degree, use diaphragm spring as an example, its unilateral pressurized, use frequently, it is long-lasting, each separation of diaphragm spring indicates can take place permanent deformation to the pressurized direction, thereby make the footboard stroke of clutch increase gradually, the stroke of clutch footboard is adjusted or compensated the mode to the braking piece among the prior art, but diaphragm spring not only makes clutch footboard stroke increase after taking place permanent deformation, but also can cause the restoring force to weaken, clutch footboard sclerosis scheduling problem, based on this, this scheme provides and can avoid or very big weakening separation point to a direction takes place permanent deformation's diaphragm spring structure.

Disclosure of Invention

The invention aims to provide a method for correcting a diaphragm spring of a clutch, aiming at solving the problems in the prior art, namely how to eliminate the permanent deformation of the diaphragm spring.

The purpose of the invention can be realized by the following technical scheme: a correction method of a clutch diaphragm spring is characterized in that the diaphragm spring comprises a plurality of first separation fingers, a second separation finger is arranged between adjacent first separation fingers, the outer ends of the first separation fingers and the second separation fingers are connected to a positioning outer ring, the positioning outer ring is fixed on a mounting ring, the inner end of each first separation finger is connected with an outer sliding sleeve, the inner end of each second separation finger is connected with an inner sliding sleeve, the inner sliding sleeve is sleeved on a valve column, the valve column and the outer sliding sleeve are fixedly connected through a plurality of first connecting strips, the outer sliding sleeve is slidably connected in a valve body, the valve body and the mounting ring are fixedly connected through a plurality of first spokes, a first push plate is fixedly arranged at the inner end of the valve column, the first push plate and the valve column are fixedly connected through a guide rod, the guide rod is slidably connected on the valve body, a second push plate is fixedly arranged on the inner sliding sleeve, and the middle part of the second push plate is provided with an avoidance hole matched with the first push plate;

a plurality of mounting blocks which are in one-to-one correspondence with the second separating fingers are uniformly arranged on the outer wall of the inner sliding sleeve in the circumferential direction, second slots which are matched with the inner ends of the second separating fingers are formed in the mounting blocks, a plurality of mounting bars which are in one-to-one correspondence with the first separating fingers are uniformly arranged on the outer sliding sleeve in the circumferential direction, spaces for avoiding the mounting blocks are formed between the adjacent mounting bars, and first slots which are matched with the inner ends of the first separating fingers are formed in the mounting bars;

the inner sliding sleeve is fixedly connected with the second push plate through a plurality of second connecting strips;

a closed hydraulic cavity is formed among the valve column, the inner sliding sleeve, the outer sliding sleeve and the valve body, and hydraulic oil is filled in the hydraulic cavity;

the diaphragm spring also comprises a mounting sleeve, the mounting sleeve is fixedly connected with the mounting ring through a plurality of second spokes, an action sleeve is connected in the mounting sleeve in a sliding manner, and an action rod is connected in the action sleeve in a threaded manner;

one of the working states of the diaphragm spring is as follows: the inner end of the action rod extends out of the inner end of the action sleeve, the outer end of the action rod is contracted into the action sleeve, the action sleeve is used for connecting a separation fork of the clutch, a first push plate connected with the valve post is used for acting with a pressure plate of the clutch, the action sleeve pushes the valve post after being pushed by the separation fork, the valve post and the outer sliding sleeve move towards the pressure plate of the clutch to extrude a hydraulic cavity in the valve body fixed on the mounting ring, the inner sliding sleeve moves towards the direction of the separation fork relative to the valve body to balance the pressure in the hydraulic cavity, the middle part of the first separation finger deforms towards the direction of the pressure plate of the clutch, the middle part of the second separation finger deforms towards the direction of the separation fork, and the inner end of the first separation finger and the inner end of the second separation finger are respectively positioned at two sides of the positioning outer ring;

when the deformation of the diaphragm spring needs to be corrected, the following operations are carried out: adjusting the action rod and the action sleeve to enable the inner end of the action rod to be contracted into the action sleeve, the outer end of the action rod to extend out of the outer end of the action sleeve, and the action rod is used for connecting a separation fork of the clutch; the second push pedal that links to each other with the inner sliding sleeve is used for the clamp plate effect with the clutch, after the action bar receives the thrust that comes from the separation fork, the action cover promotes the inner sliding sleeve, the inner sliding sleeve removes to the clamp plate direction of clutch, the hydraulic pressure chamber in the valve body of extrusion fixed on the collar, valve column and outer sliding sleeve remove in order to balance the pressure in the hydraulic pressure chamber to the separation fork direction of clutch, the middle part of first separation finger takes place deformation to the direction of the separation fork of clutch, the middle part of second separation finger takes place deformation to the direction of the clamp plate of clutch, make the inner both sides that are located the location outer lane respectively of first separation finger inner and second separation finger inner.

Both the first push plate and the second push plate can act on a pressure plate of the clutch.

Furthermore, in a natural state, the first separating finger, the second separating finger and the positioning outer ring are in the same plane.

The pressed surface of the traditional diaphragm spring bulges outwards, the method is to facilitate the installation of the separating fork, in the scheme, the first separating finger, the second separating finger and the positioning outer ring are positioned in the same plane, when the first separating finger and the second separating finger deform to the two sides of the positioning outer ring in opposite directions, the elastic restoring force is equivalent, after the deformation directions of the first separating finger and the second separating finger are switched, the first separating finger which originally swings towards the inner side of the positioning outer ring is changed to swing towards the outer side of the positioning outer ring, the second separating finger which originally swings towards the outer side of the positioning outer ring is changed to swing towards the inner side of the positioning outer ring, the force for correcting the permanent deformation is opposite, the action degree is equivalent, so that the elasticity, initial state and elastic restoring force of the first separating finger and the second separating finger can be restored, namely the diaphragm spring can be corrected and compensated after permanent deformation.

Furthermore, the mounting ring is provided with a positioning ring groove, and the positioning outer ring is inserted into the positioning ring groove.

Furthermore, when the valve column and the outer sliding sleeve extrude the hydraulic cavity, the inner sliding sleeve and the valve column move in opposite directions for the same distance relative to the valve body.

When the deformation directions of the first separation finger and the second separation finger are switched, the displacement of the inner end of the first separation finger and the displacement of the inner end of the second separation finger relative to the positioning outer ring are the same, so that the first separation finger and the second separation finger can be extruded in the same deformation degree and the opposite deformation direction after the deformation directions are switched, the first separation finger or the second separation finger which is subjected to permanent deformation is corrected, and the permanent deformation is compensated.

Furthermore, the action rod is provided with a first bayonet used for connecting the separating fork.

Furthermore, the action sleeve is provided with a second bayonet used for connecting the separation fork.

According to needs, make the separation fork link to each other with first bayonet socket or second bayonet socket to make first separation indicate and the second separation indicates to switch over the deformation direction when the pressurized.

Furthermore, the action sleeve is internally connected with a limiting block for limiting the action rod in a threaded manner.

The limiting block can lock the action sleeve and the action rod, and the action sleeve is prevented from moving relative to the action rod when the separation fork acts on the action rod.

Furthermore, the inner end of the first separating finger is inserted into the first slot, and a gap is formed between the inner end of the first separating finger and the first slot.

Furthermore, the inner end of the second separating finger is inserted into the second slot, and a gap is formed between the inner end of the second separating finger and the second slot.

The working principle is as follows:

the action rod and the action sleeve are adjusted to enable the inner end of the action rod to extend out of the inner end of the action sleeve, at the moment, the outer end of the action rod is contracted into the action sleeve, the action sleeve is used for connecting a separation fork of the clutch, a first push plate connected with the valve column is used for acting with a pressure plate of the clutch, after the action sleeve receives thrust from the separation fork, the action rod pushes the valve column, the valve column and the outer sliding sleeve move towards the pressure plate of the clutch and extrude a hydraulic cavity in the valve body fixed on the mounting ring, and the inner sliding sleeve moves towards the direction of the separation fork relative to the valve body to balance pressure in the hydraulic cavity.

After the diaphragm spring is used for a period of time, or when a user feels that the external force required for compressing the diaphragm spring is reduced, or when a clutch equipped with the diaphragm spring is repaired, the following operations can be performed:

adjusting the action rod and the action sleeve to enable the inner end of the action rod to contract into the action sleeve, wherein the outer end of the action rod extends out of the outer end of the action sleeve, the action rod is used for connecting a separation fork of the clutch, and the separation fork can be realized by replacing a connecting piece of the separation fork or sleeving a shaft sleeve with the same diameter as the action sleeve on the action rod when connecting the action rod and the action sleeve with different diameters; the second push pedal that links to each other with the inner sliding sleeve is used for the clamp plate effect with the clutch, after the action bar receives the thrust that comes from the separation fork, the action cover promotes the inner sliding sleeve, the inner sliding sleeve removes to the clamp plate direction of clutch, the hydraulic pressure chamber in the valve body of extrusion fixed on the collar, valve column and outer sliding sleeve remove in order to balance the pressure in the hydraulic pressure chamber to the separation fork direction of clutch, so, the middle part of first separation finger takes place deformation to the direction of the separation fork of clutch, the middle part of second separation finger takes place deformation to the direction of the clamp plate of clutch, make the inner both sides that are located the location outer lane respectively of first separation finger inner and second separation finger inner.

Because first separation indicates and the second separation indicates all takes place deformation, the required external force of overcoming diaphragm spring and taking place deformation is the same with first separation indicates and the required external force of second separation point to take place deformation in the same direction.

The switching of the deformation direction of the first separating finger and the second separating finger when the diaphragm spring works has the following advantages:

first separation indicates and second separation indicates to take place deformation to same direction for a long time, permanent deformation of certain degree can take place for a long time, thereby cause the diaphragm spring restoring force to weaken, the middle part of the diaphragm spring after reseing is protruding to pressurized direction one side, the idle stroke increase scheduling problem of clutch pedal, indicate through this scheme first separation, the deformation direction of second separation indicates switches over when appropriate, can compensate the permanent deformation that first separation indicates and second separation indicates, if this kind of switching is more frequent, can ensure the restoring force of diaphragm spring, initial position after reseing, the idle stroke of clutch pedal keeps invariable, and then to the performance of clutch, diaphragm spring's life etc. all has very big improvement.

In addition, the whole separation of traditional diaphragm spring indicates all to same direction deformation, and adjacent separation indicates that the clearance between is less, and this scheme indicates the separation to be divided into two sets ofly, makes two sets of separation indicate respectively outside to opposite direction deformation, and the clearance between the adjacent separation indicates is the range of magnitudes increase, and adjacent separation indicates to form the fan-shaped vent of perpendicular and diaphragm spring axis direction after the dislocation, has very big promotion to diaphragm spring's heat dissipation space.

Furthermore, in this scheme, adjacent separation indicates with opposite direction deformation, and deformation is symmetrical, equidistance, and diaphragm spring's atress is more even, avoids taking place to dislocate and excessive wearing and tearing between diaphragm spring outer lane and the installed part.

The separation of traditional diaphragm spring indicates that the pressurized direction is invariable, and along with permanent deformation's production, its further degree that takes place permanent deformation and strain can aggravate, makes diaphragm spring's life shorter.

The scheme realizes the switching of the first separation finger and the second separation finger in the direction changing direction, which is equivalent to the turning over of the diaphragm spring, and has great advantages in the aspects of heat dissipation performance and stability even if the scheme does not have the function of switching the separation finger in the direction changing direction.

Drawings

Fig. 1 is a plan view of the present diaphragm spring.

Figure 2 is a cross-sectional view of the present diaphragm spring when the first push plate is acting.

Figure 3 is a cross-sectional view of the present diaphragm spring with the second push plate acting.

Fig. 4 is an enlarged view of a portion a in fig. 2.

Fig. 5 is an enlarged view of a portion B in fig. 3.

Fig. 6 is a schematic plan view of the inner slide sleeve and the second push plate connected with the inner slide sleeve.

Fig. 7 is a schematic plan view of the valve stem and the outer sliding sleeve connected therewith.

In the figure, 11, the first separation finger; 12. a second separating finger; 13. positioning the outer ring; 2. a mounting ring; 31. an outer sliding sleeve; 32. an inner sliding sleeve; 33. a spool; 34. a valve body; 35. mounting blocks; 36. mounting a bar; 37. a hydraulic chamber; 41. installing a sleeve; 42. an action sleeve; 43. an action rod; 44. a limiting block; 51. a first connecting bar; 52. a second connecting strip; 61. a first spoke; 62. a second spoke; 71. a first push plate; 72. a second push plate.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 7, the valve comprises a plurality of first separating fingers 11, a second separating finger 12 is provided between adjacent first separating fingers 11, the outer ends of the first separating fingers 11 and the second separating fingers 12 are connected to a positioning outer ring 13, the positioning outer ring 13 is fixed on a mounting ring 2, the inner end of each first separating finger 11 is connected to an outer sliding sleeve 31, the inner end of each second separating finger 12 is connected to an inner sliding sleeve 32, the inner sliding sleeve 32 is sleeved on a valve post 33, the valve post 33 is fixedly connected to the outer sliding sleeve 31 through a plurality of first connecting bars 51, the outer sliding sleeve 31 is slidably connected to a valve body 34, the valve body 34 is fixedly connected to the mounting ring 2 through a plurality of first spokes 61, the inner end of the valve post 33 is fixedly provided with a first push plate 71, the first push plate 71 is fixedly connected to the valve post 33 through a guide rod, the guide rod is slidably connected to the valve body 34, the inner sliding sleeve 32 is fixedly provided with a second push plate 72, the middle part of the second push plate 72 is provided with an avoidance hole matched with the first push plate 71;

a plurality of mounting blocks 35 which are in one-to-one correspondence with the second separating fingers 12 are uniformly arranged on the outer wall of the inner sliding sleeve 32 in the circumferential direction, a second slot which is matched with the inner ends of the second separating fingers 12 is formed in each mounting block 35, a plurality of mounting bars 36 which are in one-to-one correspondence with the first separating fingers 11 are uniformly arranged on the outer sliding sleeve 31 in the circumferential direction, a space which avoids the mounting blocks 35 is formed between every two adjacent mounting bars 36, and a first slot which is matched with the inner ends of the first separating fingers 11 is formed in each mounting bar 36;

the inner sliding sleeve 32 is fixedly connected with the second push plate 72 through a plurality of second connecting strips 52;

a closed hydraulic cavity 37 is formed among the valve column 33, the inner sliding sleeve 32, the outer sliding sleeve 31 and the valve body 34, and hydraulic oil is filled in the hydraulic cavity 37.

The diaphragm spring further comprises a mounting sleeve 41, the mounting sleeve 41 is fixedly connected with the mounting ring 2 through a plurality of second spokes 62, an action sleeve 42 is connected in the mounting sleeve 41 in a sliding mode, and an action rod 43 is connected in the action sleeve 42 in a threaded mode. Both the first push plate 71 and the second push plate 72 can act on the pressure plate of the clutch.

In a natural state, the first separating finger 11, the second separating finger 12 and the positioning outer ring 13 are in the same plane. The traditional compression surface of the diaphragm spring bulges outwards, which is to facilitate the installation of the separation fork, in the scheme, the first separation finger 11, the second separation finger 12 and the positioning outer ring 13 are in the same plane, the elastic restoring force is equivalent when the first separation finger 11 and the second separation finger 12 deform towards two sides of the positioning outer ring 13 in opposite directions, after the deformation directions of the first separation finger 11 and the second separation finger 12 are switched, the first separation finger 11 which originally swings towards the inner side of the positioning outer ring 13 is changed into swinging towards the outer side of the positioning outer ring 13, the second separation finger 12 which originally swings towards the outer side of the positioning outer ring 13 is changed into swinging towards the inner side of the positioning outer ring 13, the force for correcting permanent deformation is opposite, the action degree is equivalent, so that the elasticity, the initial state and the elastic restoring force of the first separation finger 11 and the second separation finger 12 are recovered, i.e. the diaphragm spring can be corrected and compensated after permanent deformation.

The mounting ring 2 is provided with a positioning ring groove, and the positioning outer ring 13 is inserted in the positioning ring groove.

When the spool 33 and the outer sliding sleeve 31 press the hydraulic pressure chamber 37, the inner sliding sleeve 32 and the spool 33 move in opposite directions by the same distance with respect to the valve body 34.

When the deformation directions of the first separating finger 11 and the second separating finger 12 are switched, the displacements of the inner ends of the first separating finger 11 and the second separating finger 12 relative to the positioning outer ring 13 are the same, so that the first separating finger 11 and the second separating finger 12 can be extruded in the same deformation degree and the opposite deformation directions after the deformation directions are switched, the first separating finger 11 or the second separating finger 12 which is subjected to permanent deformation is corrected, and the permanent deformation is compensated.

The actuating lever 43 has a first bayonet for attaching a release fork. The actuating sleeve 42 has a second bayonet for attachment of a release fork. As required, the separation fork is connected to the first bayonet or the second bayonet to switch the deformation direction of the first separating finger 11 and the second separating finger 12 when pressed.

A stopper 44 for limiting the operating lever 43 is screwed into the operating sleeve 42. The stop block 44 enables the actuating sleeve 42 and the actuating rod 43 to be locked, so that the actuating sleeve 42 is prevented from moving relative to the actuating rod 43 when the release fork acts on the actuating rod 43.

The inner end of the first separating finger 11 is inserted into the first slot, and a gap is formed between the inner end of the first separating finger 11 and the first slot. The inner end of the second separating finger 12 is inserted into the second slot, and a gap is formed between the inner end of the second separating finger 12 and the second slot.

The working principle is as follows:

the actuating rod 43 and the actuating sleeve 42 are adjusted so that the inner end of the actuating rod 43 extends beyond the inner end of the actuating sleeve 42, and, at this time, the outer end of the actuating rod 43 is retracted into the actuating sleeve 42, the actuating sleeve 42 is used to connect the release fork of the clutch, the first push plate 71 connected to the spool 33 is used to act on the clutch pressure plate, and after the operating sleeve 42 receives the thrust from the release fork, the operating rod 43 pushes the spool 33, the spool 33 and the outer slide sleeve 31 move toward the clutch pressure plate, pressing the hydraulic chamber 37 in the valve body 34 fixed to the mounting ring 2, the inner slide sleeve 32 moves toward the release fork relative to the valve body 34 to balance the pressure in the hydraulic chamber 37, in this way, the middle portion of the first separating finger 11 is deformed in the direction of the pressure plate of the clutch, and the middle portion of the second separating finger 12 is deformed in the direction of the separating fork, so that the inner end of the first separating finger 11 and the inner end of the second separating finger 12 are located on both sides of the positioning outer ring 13, respectively.

adjusting the action rod 43 and the action sleeve 42 to enable the inner end of the action rod 43 to be contracted into the action sleeve 42, wherein the outer end of the action rod 43 extends out of the outer end of the action sleeve 42, the action rod 43 is used for connecting a separation fork of the clutch, and the separation fork can be realized by replacing a connecting piece of the separation fork or sleeving a shaft sleeve with the same diameter as the action sleeve 42 on the action rod 43 when connecting the action rod 43 and the action sleeve 42 with different diameters; the second push plate 72 connected with the inner sliding sleeve 32 is used for acting with a pressure plate of the clutch, after the action rod 43 receives thrust from the release fork, the action sleeve 42 pushes the inner sliding sleeve 32, the inner sliding sleeve 32 moves towards the pressure plate of the clutch to extrude the hydraulic cavity 37 in the valve body 34 fixed on the mounting ring 2, and the valve column 33 and the outer sliding sleeve 31 move towards the release fork of the clutch to balance the pressure in the hydraulic cavity 37, so that the middle part of the first release finger 11 deforms towards the release fork of the clutch, the middle part of the second release finger 12 deforms towards the pressure plate of the clutch, and the inner end of the first release finger 11 and the inner end of the second release finger 12 are respectively positioned at two sides of the positioning outer ring 13.

Because the first separating finger 11 and the second separating finger 12 are deformed, the external force required for overcoming the deformation of the diaphragm spring is the same as the external force required for the deformation of the first separating finger 11 and the second separating finger 12 in the same direction.

Switching the deformation direction of the first separating finger 11 and the second separating finger 12 during the operation of the diaphragm spring has the following advantages:

the first separation finger 11 and the second separation finger 12 are deformed in the same direction for a long time, and permanent deformation of a certain degree can occur over time, so that the restoring force of the diaphragm spring is weakened, the middle part of the reset diaphragm spring protrudes to one side of the pressed direction, the idle stroke of the clutch pedal is increased, and the like.

In addition, the whole separation of traditional diaphragm spring indicates all to same direction deformation, and the clearance between the adjacent separation indicates is less, and this scheme indicates the separation to be divided into two sets ofly, makes two sets of separation indicate respectively to opposite direction deformation outside, and the clearance between the adjacent separation indicates is the range of magnitude increase, and adjacent separation indicates to form the fan-shaped vent of perpendicular and diaphragm spring axis direction after the dislocation, has very big promotion to diaphragm spring's heat dissipation space.

According to the scheme, the switching of the deformation directions of the first separation finger 11 and the second separation finger 12 is realized, namely the membrane spring is turned, and even if the scheme does not have the function of switching the separation finger-shaped deformation directions, the scheme also has great advantages in the aspects of heat dissipation performance and stability.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A correction method of a clutch diaphragm spring is characterized in that the diaphragm spring comprises a plurality of first separation fingers (11), a second separation finger (12) is arranged between adjacent first separation fingers (11), the outer ends of the first separation fingers (11) and the second separation fingers (12) are connected to a positioning outer ring (13), the positioning outer ring (13) is fixed on a mounting ring (2), the inner end of each first separation finger (11) is connected with an outer sliding sleeve (31), the inner end of each second separation finger (12) is connected with an inner sliding sleeve (32), the inner sliding sleeve (32) is sleeved on a valve column (33), the valve column (33) is fixedly connected with the outer sliding sleeve (31) through a plurality of first connecting strips (51), the outer sliding sleeve (31) is connected in a valve body (34) in a sliding manner, and the valve body (34) is fixedly connected with the mounting ring (2) through a plurality of first spokes (61), a first push plate (71) is fixedly arranged at the inner end of the valve column (33), the first push plate (71) is fixedly connected with the valve column (33) through a guide rod, the guide rod is connected to the valve body (34) in a sliding mode, a second push plate (72) is fixedly arranged on the inner sliding sleeve (32), and an avoidance hole matched with the first push plate (71) is formed in the middle of the second push plate (72);

a plurality of mounting blocks (35) which are in one-to-one correspondence with the second separation fingers (12) are uniformly arranged on the outer wall of the inner sliding sleeve (32) in the circumferential direction, second slots which are matched with the inner ends of the second separation fingers (12) are formed in the mounting blocks (35), a plurality of mounting bars (36) which are in one-to-one correspondence with the first separation fingers (11) are uniformly arranged on the outer sliding sleeve (31) in the circumferential direction, a space for avoiding the mounting blocks (35) is formed between every two adjacent mounting bars (36), and first slots which are matched with the inner ends of the first separation fingers (11) are formed in the mounting bars (36);

the inner sliding sleeve (32) is fixedly connected with the second push plate (72) through a plurality of second connecting strips (52);

a closed hydraulic cavity (37) is formed among the valve column (33), the inner sliding sleeve (32), the outer sliding sleeve (31) and the valve body (34), and hydraulic oil is filled in the hydraulic cavity (37);

the diaphragm spring also comprises a mounting sleeve (41), the mounting sleeve (41) is fixedly connected with the mounting ring (2) through a plurality of second spokes (62), an action sleeve (42) is connected in the mounting sleeve (41) in a sliding manner, and an action rod (43) is connected in the action sleeve (42) in a threaded manner;

one of the working states of the diaphragm spring is as follows: the inner end of the action rod (43) extends out of the inner end of the action sleeve (42), the outer end of the action rod (43) is contracted into the action sleeve (42), the action sleeve (42) is used for being connected with a separation fork of the clutch, a first push plate (71) connected with the valve post (33) is used for acting with a pressure plate of the clutch, after the action sleeve (42) is pushed by thrust from the separation fork, the action rod (43) pushes the valve post (33), the valve post (33) and the outer sliding sleeve (31) move towards the pressure plate of the clutch to extrude a hydraulic cavity (37) in the valve body (34) fixed on the mounting ring (2), the inner sliding sleeve (32) moves towards the separation fork relative to the valve body (34) to balance pressure in the hydraulic cavity (37), the middle of the first separation finger (11) deforms towards the pressure plate of the clutch, the middle of the second separation finger (12) deforms towards the direction of the separation fork, and the inner end of the first separation finger (11) and the second separation finger (12) are respectively positioned at the outer ring (13) positioned at the inner end of the outer ring (13) Two sides;

when the permanent deformation of the diaphragm spring needs to be corrected, the following operations are carried out:

adjusting the action rod (43) and the action sleeve (42) to enable the inner end of the action rod (43) to contract into the action sleeve (42), wherein the outer end of the action rod (43) extends out of the outer end of the action sleeve (42), the action rod (43) is used for connecting a separation fork of the clutch, and the separation fork can be realized by replacing a connecting piece of the separation fork when connecting the action rod (43) and the action sleeve (42) with different diameters or sleeving a shaft sleeve with the same diameter as the action sleeve (42) on the action rod (43); the second push plate (72) connected with the inner sliding sleeve (32) is used for acting with a pressure plate of the clutch, after the action rod (43) is pushed by a separating fork, the action sleeve (42) pushes the inner sliding sleeve (32), the inner sliding sleeve (32) moves towards the pressure plate of the clutch to extrude a hydraulic cavity (37) in a valve body (34) fixed on the mounting ring (2), the valve column (33) and the outer sliding sleeve (31) move towards the separating fork of the clutch to balance the pressure in the hydraulic cavity (37), the middle of the first separating finger (11) deforms towards the separating fork of the clutch, the middle of the second separating finger (12) deforms towards the pressure plate of the clutch, and the inner end of the first separating finger (11) and the inner end of the second separating finger (12) are respectively located on two sides of the positioning outer ring (13).

2. The method for straightening a clutch diaphragm spring according to claim 1, wherein the first separating finger (11), the second separating finger (12) and the positioning outer ring (13) are in the same plane in a natural state.

3. The method for straightening a clutch diaphragm spring according to claim 2, characterized in that the mounting ring (2) is provided with a positioning ring groove, and the positioning outer ring (13) is inserted into the positioning ring groove.

4. A method for straightening a clutch diaphragm spring according to claim 3, characterized in that when the spool (33) and the outer sliding sleeve (31) press the hydraulic chamber (37), the inner sliding sleeve (32) and the spool (33) move in opposite directions and the same distance relative to the valve body (34).

5. Method for straightening a clutch diaphragm spring according to claim 1, characterized in that the actuating rod (43) has a first bayonet for the connection of a release fork.

6. The method for straightening a clutch diaphragm spring according to claim 5, characterized in that the actuating sleeve (42) has a second bayonet for the connection of a release fork.

7. The method for correcting the diaphragm spring of the clutch according to any one of claims 1 to 6, wherein a limiting block (44) for limiting the acting rod (43) is connected to the acting sleeve (42) through an internal thread.

8. The method for straightening a clutch diaphragm spring according to claim 7, characterized in that the inner end of the first separating finger (11) is inserted into the first slot with a gap between the inner end of the first separating finger (11) and the first slot.

9. The method for straightening the clutch diaphragm spring according to claim 7, wherein the inner end of the second separating finger (12) is inserted into the second slot, and a gap is formed between the inner end of the second separating finger (12) and the second slot.