CN107882901B - Brake chamber with self-locking parking mechanism - Google Patents
Brake chamber with self-locking parking mechanism Download PDFInfo
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- CN107882901B CN107882901B CN201711444319.3A CN201711444319A CN107882901B CN 107882901 B CN107882901 B CN 107882901B CN 201711444319 A CN201711444319 A CN 201711444319A CN 107882901 B CN107882901 B CN 107882901B
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- assembly
- locking
- push rod
- piston
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a brake air chamber with a self-locking parking mechanism, which comprises a front cover assembly, a first middle body assembly, a second middle body assembly, a cylinder body assembly, a push rod disc assembly and a piston assembly. A leather membrane is arranged in a first space formed by the front cover assembly and the first middle body assembly, and separates the first space into two cavities, namely a push rod disc assembly cavity and a service brake cavity; the push rod disc assembly is arranged in the push rod disc assembly cavity; the piston assembly is arranged in a second space formed by the second middle body assembly and the cylinder body assembly. And a self-locking mechanism is also arranged in the second space, and the piston assembly is arranged between the self-locking mechanism and the cylinder assembly. The design of the invention replaces the original energy storage strong spring, completes the task of parking, and ensures that the braking air chamber has higher safety and longer service life.
Description
Technical Field
The invention relates to the field of automobile brake chambers, in particular to a brake chamber with a self-locking parking mechanism.
Background
At present, an energy storage spring brake air chamber with a service brake function and a parking brake function is adopted as an automobile brake air chamber with a parking function. When the parking is braked, the air pressure in the parking cavity is relieved through the parking valve, the spring force of the energy storage spring acts on the push rod disc assembly through the piston assembly and is transmitted to the brake, so that the brake works, and the parking braking is realized. Therefore, the key part of the parking brake air chamber is an energy storage spring, and the service life of the energy storage spring is limited because the parking brake is frequently operated, once the energy storage spring fails, the parking brake can fail, and the effect of the parking brake cannot be achieved.
Disclosure of Invention
The invention aims to provide a brake air chamber with a self-locking parking mechanism.
The invention solves the problems that the service life of the energy storage spring in the existing brake air chamber is limited, and the parking brake can be invalid and cannot achieve the parking brake effect once the energy storage spring fails.
The technical scheme adopted for solving the technical problems is as follows: the invention comprises a front cover assembly, a first middle body assembly, a second middle body assembly, a cylinder body assembly, a push rod disc assembly and a piston assembly; the front cover assembly is connected with the first middle body assembly, the second middle body assembly is connected with the cylinder body assembly, and the first middle body assembly and the second middle body assembly are welded and fixed; a leather membrane is arranged in a first space formed by the front cover assembly and the first middle body assembly, and separates the first space into two cavities, namely a push rod disc assembly cavity and a service brake cavity; the push rod disc assembly is arranged in the push rod disc assembly cavity; the piston assembly is arranged in a second space formed by the second middle body assembly and the cylinder body assembly; the second space is internally provided with a self-locking mechanism which comprises a self-locking rod, a self-locking claw, a locking ring component and a locking claw return spring; the self-locking rod traverses the second space and sequentially passes through the locking claw return spring, the self-locking claw and the piston assembly, one end of the self-locking rod is fixedly connected with the push rod disc assembly, and the other end of the self-locking rod is arranged on the release sleeve connected with the cylinder assembly; the lock ring assembly is arranged at the joint of the second middle body assembly and the cylinder body assembly, and the piston assembly is arranged between the self-locking mechanism and the cylinder body assembly; the side wall of the first middle body assembly is provided with a first air inlet, and the side wall of the cylinder body assembly is provided with a second air inlet.
Further, the push rod disc assembly comprises a push rod, a push rod disc, a dust cover and a push rod return spring; one end of the push rod is exposed out of the end face of the front cover assembly, the other end of the push rod penetrates through the leather membrane, the push rod disc is arranged on the push rod and close to the end part of the leather membrane, the dust cover is covered on the middle section of the push rod, the push rod return spring is sleeved on the outer side of the dust cover, one end of the push rod return spring is abutted against the end face of the front cover assembly, and the other end of the push rod return spring is abutted against the push rod disc; the end face of the first middle body component is attached to the end face of the second middle body component, through holes are formed in the mutually attached end faces, and a positioning guide sleeve is arranged at the through holes; one end of the self-locking rod is embedded in the positioning guide sleeve and is connected with the push rod of the push rod disc assembly at the end face of the self-locking rod.
Further, the piston assembly comprises a piston body and a connecting transmission sleeve, the connecting transmission sleeve is sleeved on the self-locking rod, and a concave step structure matched with the piston body is arranged on the outer annular wall of the connecting transmission sleeve; a parking braking cavity is formed between the piston body and the cylinder body assembly; the lock ring assembly comprises a lock ring positioning plate and a fixed lock block; the lock ring positioning plate is of an annular structure, the outer annular wall of the lock ring positioning plate is fixed at the joint of the second middle body assembly and the cylinder body assembly, and the fixed lock block is arranged on the inner annular wall of the lock ring positioning plate; the outer side wall of the fixed locking block is provided with an annular notch, and the inner annular wall of the locking ring positioning plate is matched with the annular notch.
Furthermore, a clamping groove is formed in the annular notch of the outer side wall of the fixed locking block, a clamping spring is installed at the clamping groove, and the fixed locking block is fixed on the inner annular wall of the locking ring positioning plate through the clamping spring.
Furthermore, the inner annular wall of the fixed locking block is of an inclined structure, the outer annular wall of the self-locking claw is of an inclined structure, a larger opening of the inner annular wall of the fixed locking block is close to the second middle body assembly, and a smaller opening of the inner annular wall of the fixed locking block is close to the piston assembly; the inclined structure of the self-locking claw is matched with the inclined structure on the fixed locking block; the larger-diameter end of the outer annular wall of the self-locking claw is close to the second middle body assembly, and the smaller-diameter end of the outer annular wall of the self-locking claw is close to the piston assembly; the inner annular wall of the self-locking claw is provided with annular concave-convex structures which are distributed at equal intervals, the self-locking rod is also provided with annular concave-convex structures which are distributed at equal intervals, and the annular concave-convex structures on the self-locking claw are mutually meshed with the annular concave-convex structures on the self-locking rod.
Furthermore, a piston return spring is arranged between the lock ring positioning plate and the piston body, one end of the piston return spring is in contact with the lock ring positioning plate, and the other end of the piston return spring is in contact with the piston body.
Further, a release ring is arranged on one side of the connecting transmission sleeve adjacent to the fixed locking block, and the release ring is connected with the connecting transmission sleeve by a pin; the front end of the release ring is of a convex structure, and the outer diameter of the release ring is smaller than the diameter of the smaller end of the inner annular wall of the fixed locking block.
Further, the outer ring of the piston body is sleeved with a guide ring part, and the guide ring part is fixed on the inner side end surface of the cylinder body assembly; and a sealing ring is arranged on the outer side edge of the piston body, which is contacted with the inner wall of the cylinder body assembly.
Further, an opening is formed in the end face of the cylinder body assembly, a screw sleeve is welded at the opening, and the release sleeve is arranged on the inner annular wall of the screw sleeve and is in threaded connection with the screw sleeve.
Further, a locking claw return spring is arranged between the second middle body component and the self-locking mechanism, the locking claw return spring is sleeved on the self-locking rod, one end of the locking claw return spring is abutted against the inner wall of the end face of the second middle body component, and the other end of the locking claw return spring is abutted against the self-locking claw; the larger diameter end of the self-locking claw is provided with a bayonet, and the locking claw return spring is connected with the bayonet; the outer ring of the front cover component is sleeved with a dust ring.
The beneficial effects of the invention are as follows:
1. the self-locking mechanism replaces the existing energy storage spring, and the parking brake can be completed.
2. The safety of the product is higher, and the assembly and detection are more convenient.
3. The components are matched with each other to finish braking operation, the service lives of the components are prolonged, and the efficiency is fully utilized.
4. The cooperation of self-locking claw and self-locking rod has not only increased the friction, has increased the effect of mechanical interlock simultaneously, has guaranteed the effect of parking braking.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view at I in fig. 1.
Fig. 3 is an enlarged view at K in fig. 1.
Fig. 4 is an enlarged view at H in fig. 1.
In the figure: 1. a front cover assembly; 2. a coating film; 3. a first midbody assembly; 4 a second midbody assembly; 5. a lock ring positioning plate; sixthly, a sealing ring; 7. a piston body; 8. a cylinder assembly; 9. a guide ring member; 10. connecting with a transmission sleeve; 11. releasing the sleeve; 12. a screw sleeve; 13. a piston return spring; 14. fixing the locking block; 15. self-locking claws; 16. a self-locking lever; 17. a locking claw return spring; 18. positioning a guide sleeve; 19, a dust ring; 20. a push rod return spring; 21. a push rod; 22. a dust cover; 23. a push rod disc; 24. a concave step structure; 25. a pin; 26. releasing the ring; 27. an annular recess; 28. clamping springs; 29. a clamping groove; 30. an annular concave-convex structure; 31. a bayonet.
A. A pushrod disc assembly cavity; B. a service brake chamber; c, parking braking cavity; K1. a first air inlet; k2. a second air inlet.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the present invention includes a front cover assembly 1, a first middle body assembly 3, a second middle body assembly 4, a cylinder assembly 8, a push rod disc assembly, and a piston assembly. The front cover assembly 1 is connected with the first middle body assembly 3, the second middle body assembly 4 is connected with the cylinder body assembly 8, and the first middle body assembly 3 and the second middle body assembly 4 are welded and fixed. The outer ring of the front cover assembly 1 is sleeved with a dust ring 19.
The first space formed by the front cover component 1 and the first middle body component 3 is internally provided with a leather film 2, and the leather film 2 separates the first space into two cavities, namely a push rod disc component cavity A and a service brake cavity B. The push rod disc assembly is arranged in the push rod disc assembly cavity A; the piston assembly is mounted in the second intermediate body assembly 4 and the cylinder assembly 8 forming a second space.
The pusher tray assembly includes a pusher 21, a pusher tray 23, a dust cap 22, and a pusher return spring 20. One end of the push rod 21 is exposed on the end face of the front cover assembly 1, the other end of the push rod passes through the leather membrane 2, the push rod disc 23 is mounted on the push rod 21 and is close to the end part of the leather membrane 2, the dust cover 22 covers the middle section of the push rod 21, the push rod return spring 20 is sleeved on the outer side of the dust cover 22, one end of the push rod return spring is abutted against the end face of the front cover assembly 1, and the other end of the push rod return spring is abutted against the push rod disc 23.
A self-locking mechanism is also arranged in the second space and comprises a self-locking rod 16, a self-locking claw 15, a locking ring component and a locking claw return spring 17. The self-locking rod 16 traverses the second space and sequentially passes through the locking claw return spring 17, the self-locking claw 15 and the piston assembly, one end of the self-locking rod is fixedly connected with the push rod disc assembly, and the other end of the self-locking rod is arranged on the release sleeve 11 connected with the cylinder assembly 8.
The end face of the first middle body component 3 is jointed with the end face of the second middle body component 4, and the mutually jointed end faces are provided with perforations, and the positioning guide sleeve 18 is arranged at the perforations. One end of the self-locking lever 16 is fitted into the positioning guide sleeve 18 and is connected at its end face to the push rod 21 of the push rod disc assembly.
The lock ring assembly is arranged at the joint of the second middle body assembly 4 and the cylinder body assembly 8. The lock collar assembly includes a lock collar locating plate 5 and a stationary lock block 14. The lock ring locating plate 5 is of an annular structure, the outer annular wall of the lock ring locating plate 5 is fixed at the joint of the second middle body assembly 4 and the cylinder body assembly 8, and the fixed lock block 14 is arranged on the inner annular wall of the lock ring locating plate 5. An annular notch 27 is arranged on the outer side wall of the fixed locking block 14, and the inner annular wall of the locking ring positioning plate 5 is matched with the annular notch 27.
As shown in fig. 3, a clamping groove 29 is formed in the annular notch 27 of the outer side wall of the fixed locking block 14, a clamping spring 28 is installed at the clamping groove 29, and the fixed locking block 14 is fixed on the inner annular wall of the lock ring positioning plate 5 through the clamping spring 28. The inner annular wall of the lock ring positioning plate 5 is just clamped in the area formed by the annular notch 27 and the clamp spring 28 of the fixed lock block 14. It is also ensured that the fixing lock piece 14 is stably positioned and does not slide off after being mounted on the lock ring positioning plate 5.
As shown in fig. 1 and 4, the inner annular wall of the fixed locking block 14 is of an inclined structure, the outer annular wall of the self-locking claw 15 is also of an inclined structure, the larger opening of the inner annular wall of the fixed locking block 14 is close to the second middle body assembly 3, and the smaller opening is close to the piston assembly. The inclined structure of the self-locking claw 15 is matched with the inclined structure on the fixed locking block 14, the larger diameter end of the outer annular wall of the self-locking claw 15 is close to the second middle body assembly 3, and the smaller diameter end is close to the piston assembly. The inner annular wall of the self-locking claw 15 is provided with annular concave-convex structures 30 which are distributed at equal intervals, the self-locking rod 16 is also provided with annular concave-convex structures 30 which are distributed at equal intervals, the annular concave-convex structures on the self-locking claw 15 are mutually meshed with the annular concave-convex structures on the self-locking rod 16, namely, the concave parts on the self-locking claw 15 correspond to the convex parts on the self-locking rod 16, and the convex parts on the self-locking claw 15 correspond to the concave parts on the self-locking rod 16.
A piston return spring 13 is arranged between the lock ring positioning plate 5 and the piston body 7, one end of the piston return spring 13 is in contact with the lock ring positioning plate 5, and the other end is in contact with the piston body 7. One side of the piston body 7 is provided with a concave inner cavity, and one end of the piston return spring 13 is just embedded in the concave inner cavity, so that the piston return spring 13 is ensured not to shift or misplace in the working process.
The piston assembly is mounted between the self-locking mechanism and the cylinder assembly. A parking brake chamber C is formed between the piston body 7 and the cylinder assembly 8. The piston assembly comprises a piston body 7 and a connecting transmission sleeve 10. The connecting transmission sleeve 10 is sleeved on the self-locking rod 16, and the outer annular wall of the connecting transmission sleeve is provided with a concave step structure 24 matched with the piston body 7, as shown in fig. 2.
A release ring 26 is mounted on the side of the coupling transmission sleeve 10 adjacent the stationary lock block 14 as shown in fig. 2. The release ring 26 is connected with the connecting transmission sleeve 10 by a pin 25. The front end of the release ring 26 is of a convex structure, the outer diameter of the release ring 26 is smaller than the diameter of the smaller end of the inner annular wall of the fixed locking block 14, and the release ring 26 mainly has the function of moving the self-locking claw 15 to the side far away from the piston assembly, so that the self-locking claw 15 is released from the locking state, and the tight combination of the self-locking claw 15 and the self-locking rod 16 is released.
The outer ring of the piston body 7 is sleeved with a guide ring part 9, and the guide ring part 9 is fixed on the inner side end surface of the cylinder body assembly 8; the outer side edge of the piston body 7, which is contacted with the inner wall of the cylinder body assembly 8, is provided with a sealing ring 6.
The end face of the cylinder body assembly 8 is provided with an opening, a threaded sleeve 12 is welded at the opening, and a release sleeve 11 is arranged on the inner annular wall of the threaded sleeve 12 and is in threaded connection with the threaded sleeve 12.
A locking claw return spring 17 is arranged between the second middle body assembly 4 and the self-locking mechanism, the locking claw return spring 17 is sleeved on the self-locking rod 16, one end of the locking claw return spring is in contact with the inner wall of the end face of the second middle body assembly 4, and the other end of the locking claw return spring is in contact with the self-locking claw 15. The larger diameter end of the locking pawl 15 is provided with a bayonet 31 and the pawl return spring 17 is connected to the bayonet 31 as shown in fig. 1 and 4.
The side wall of the first middle body component 3 is provided with a first air inlet K1, and the side wall of the cylinder body component 8 is provided with a second air inlet K2. The first air inlet K1 is communicated with the service brake cavity B; the second air inlet K2 communicates with the parking brake chamber C.
The application principle of the invention is as follows: when the automobile runs, the first air inlet K1 is not filled with compressed air, the second air inlet K2 is kept filled with compressed air, the parking brake cavity C is enlarged, the piston body 7 moves leftwards, the connecting transmission sleeve 10 is pushed to move leftwards, the release ring 11 is pushed to act on the self-locking claw 15, the self-locking claw 15 moves leftwards, the self-locking claw 15 and the self-locking rod 16 are in an unlocking state, and the locking claw return spring 17 and the piston return spring 13 are in a compressed state. The push rod disc assembly moves towards the first middle body assembly 3 under the action of the brake return force and the push rod return spring 20 and contacts the leather membrane 2.
During service braking, the first air inlet K1 is filled with compressed air, the volume of the service braking cavity B is increased, the leather film 2 turns over to the left side, the push rod disc assembly is driven to integrally move leftwards, and thrust output by the push rod disc assembly acts on a brake to realize service braking.
During parking braking, the service braking cavity B is filled with compressed air, the volume of the service braking cavity B is increased, the leather membrane 2 moves leftwards, the push rod disc assembly also moves leftwards under the driving of the leather membrane 2, and the output thrust acts on the brake. Since the push rod 21 is fixedly connected with the self-locking rod 16, the push rod disc assembly drives the self-locking rod 16 to move, and the self-locking rod 16 moves leftwards. Simultaneously, parking braking chamber C pressure release moves the piston subassembly rightwards under the effect of piston return spring 13 reset force, release circle 26 and self-locking claw 15 separation, self-locking claw 15 also moves rightwards under the effect of the reset force of lock claw return spring 17 for self-locking claw 15 outer ring wall and the interior ring wall of fixed latch block 14 laminating each other, when self-locking claw 15 is located fixed latch block 14, be in by the state of being compressed tightly, annular concave-convex structure on the interior ring wall of self-locking claw 15 and the annular concave-convex structure interlock on self-locking rod 16, the self-locking rod just is locked like this, kept in the position after the left side shifts, the emergence of the condition of right removal has been avoided, ensure that self-locking rod 16 has realized the parking braking in the position of service braking.
When the parking brake is released, compressed air is only required to be filled into the parking brake cavity C from the second air inlet K2, the parking brake cavity C is enlarged, the piston body 7 moves leftwards, the release ring 26 is caused to act on the self-locking claw 15, the self-locking claw 15 moves leftwards, the self-locking claw 15 is not fully attached to the fixed locking piece 14 under the action of pushing force, under the condition, the annular concave-convex structure 30 of the inner annular wall of the self-locking claw 15 is not fully engaged with the annular concave-convex structure of the self-locking rod 16, and the pressing force between the self-locking claw 15 and the self-locking rod 16 is released, so that the self-locking rod 16 is in a freely movable state, namely an unlocking state. In special cases, if maintenance is required, the release ring 26 is usually pushed indirectly by twisting the release sleeve 11, so that the release ring 26 acts on the self-locking claw 15, and the self-locking claw 15 is not completely attached to the fixed locking piece 14 under the action of pushing force, so that the unlocked state is achieved.
Claims (9)
1. A brake chamber with a self-locking parking mechanism comprises a front cover assembly, a first middle body assembly, a second middle body assembly, a cylinder assembly, a push rod disc assembly and a piston assembly; the front cover assembly is connected with the first middle body assembly, the second middle body assembly is connected with the cylinder body assembly, and the first middle body assembly and the second middle body assembly are welded and fixed; a leather membrane is arranged in a first space formed by the front cover assembly and the first middle body assembly, and separates the first space into two cavities, namely a push rod disc assembly cavity and a service brake cavity; the push rod disc assembly is arranged in the push rod disc assembly cavity; the piston assembly is arranged in a second space formed by the second middle body assembly and the cylinder body assembly; the self-locking mechanism is characterized in that the second space is also internally provided with the self-locking mechanism, and the self-locking mechanism comprises a self-locking rod, a self-locking claw, a locking ring assembly and a locking claw return spring; the self-locking rod traverses the second space and sequentially passes through the locking claw return spring, the self-locking claw and the piston assembly, one end of the self-locking rod is fixedly connected with the push rod disc assembly, and the other end of the self-locking rod is arranged on the release sleeve connected with the cylinder assembly; the push rod disc assembly comprises a push rod, a push rod disc, a dust cover and a push rod return spring; the end face of the first middle body component is attached to the end face of the second middle body component, through holes are formed in the mutually attached end faces, and a positioning guide sleeve is arranged at the through holes; one end of the self-locking rod is embedded in the positioning guide sleeve and is connected with a push rod of the push rod disc assembly at the end face of the self-locking rod; the lock ring assembly is arranged at the joint of the second middle body assembly and the cylinder body assembly, and the piston assembly is arranged between the self-locking mechanism and the cylinder body assembly;
the side wall of the first middle body assembly is provided with a first air inlet, and the side wall of the cylinder body assembly is provided with a second air inlet; the lock ring assembly comprises a lock ring positioning plate and a fixed lock block; the inner annular wall of the fixed locking block is of an inclined structure, the outer annular wall of the self-locking claw is of an inclined structure, a larger opening of the inner annular wall of the fixed locking block is close to the second middle body assembly, and a smaller opening of the inner annular wall of the fixed locking block is close to the piston assembly; the inclined structure of the self-locking claw is matched with the inclined structure on the fixed locking block; the larger-diameter end of the outer annular wall of the self-locking claw is close to the second middle body assembly, and the smaller-diameter end of the outer annular wall of the self-locking claw is close to the piston assembly; the inner annular wall of the self-locking claw is provided with annular concave-convex structures which are distributed at equal intervals, the self-locking rod is also provided with annular concave-convex structures which are distributed at equal intervals, and the annular concave-convex structures on the self-locking claw are mutually meshed with the annular concave-convex structures on the self-locking rod.
2. The brake chamber with self-locking parking mechanism of claim 1, wherein one end of the push rod is exposed at the end face of the front cover assembly, the other end of the push rod penetrates through the coating, the push rod disc is mounted on the push rod at the end part close to the coating, the dust cover is covered on the middle section of the push rod, the push rod return spring is sleeved on the outer side of the dust cover, one end of the push rod return spring is abutted against the end face of the front cover assembly, and the other end of the push rod return spring is abutted against the push rod disc.
3. The brake chamber with the self-locking parking mechanism according to claim 1, wherein the piston assembly comprises a piston body and a connecting transmission sleeve, the connecting transmission sleeve is sleeved on the self-locking rod, and a concave step structure matched with the piston body is arranged on the outer annular wall of the connecting transmission sleeve; a parking braking cavity is formed between the piston body and the cylinder body assembly; the lock ring positioning plate is of an annular structure, the outer annular wall of the lock ring positioning plate is fixed at the joint of the second middle body assembly and the cylinder body assembly, and the fixed lock block is arranged on the inner annular wall of the lock ring positioning plate; the outer side wall of the fixed locking block is provided with an annular notch, and the inner annular wall of the locking ring positioning plate is matched with the annular notch.
4. The brake chamber with the self-locking parking mechanism according to claim 3, wherein a clamping groove is formed in an annular notch of the outer side wall of the fixed locking block, a clamping spring is installed in the clamping groove, and the fixed locking block is fixed on the inner annular wall of the lock ring positioning plate by the clamping spring.
5. A brake chamber with a self-locking parking mechanism as claimed in claim 3, wherein a piston return spring is installed between the lock ring positioning plate and the piston body, one end of the piston return spring is abutted against the lock ring positioning plate, and the other end is abutted against the piston body.
6. The brake chamber with the self-locking parking mechanism according to claim 3, wherein a release ring is arranged on one side of the connecting transmission sleeve adjacent to the fixed locking block, and the release ring is connected with the connecting transmission sleeve by a pin; the front end of the release ring is of a convex structure, and the outer diameter of the release ring is smaller than the diameter of the smaller end of the inner annular wall of the fixed locking block.
7. A brake chamber with a self-locking parking mechanism according to claim 3, wherein the outer ring of the piston body is sleeved with a guide ring component, and the guide ring component is fixed on the inner end surface of the cylinder assembly; and a sealing ring is arranged on the outer side edge of the piston body, which is contacted with the inner wall of the cylinder body assembly.
8. The brake chamber with the self-locking parking mechanism according to claim 1, wherein the end surface of the cylinder assembly is provided with an opening, a screw sleeve is welded at the opening, and the release sleeve is arranged on the inner annular wall of the screw sleeve and is in threaded connection with the screw sleeve.
9. The brake chamber with the self-locking parking mechanism according to claim 1, wherein a locking claw return spring is arranged between the second middle body component and the self-locking mechanism, the locking claw return spring is sleeved on the self-locking rod, one end of the locking claw return spring is abutted against the inner wall of the end face of the second middle body component, and the other end of the locking claw return spring is abutted against the self-locking claw; the larger diameter end of the self-locking claw is provided with a bayonet, and the locking claw return spring is connected with the bayonet; the outer ring of the front cover component is sleeved with a dust ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444319.3A CN107882901B (en) | 2017-12-27 | 2017-12-27 | Brake chamber with self-locking parking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444319.3A CN107882901B (en) | 2017-12-27 | 2017-12-27 | Brake chamber with self-locking parking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107882901A CN107882901A (en) | 2018-04-06 |
| CN107882901B true CN107882901B (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711444319.3A Active CN107882901B (en) | 2017-12-27 | 2017-12-27 | Brake chamber with self-locking parking mechanism |
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| CN (1) | CN107882901B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667860B (en) * | 2019-01-29 | 2023-08-22 | 嘉兴盛鼎机械有限公司 | Double-diaphragm disc spring brake chamber capable of automatically loading parking brake |
| CN110118650B (en) * | 2019-05-29 | 2024-04-12 | 嘉兴盛鼎机械有限公司 | Fatigue test equipment for parking release mechanism of double-diaphragm disc spring brake chamber |
| CN110410437B (en) * | 2019-07-22 | 2024-02-06 | 嘉兴盛鼎机械有限公司 | Brake chamber with balanced valve structure |
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