CN201606436U - Adjustable diaphragm brake air-chamber assembly - Google Patents
Adjustable diaphragm brake air-chamber assembly Download PDFInfo
- Publication number
- CN201606436U CN201606436U CN2009201775524U CN200920177552U CN201606436U CN 201606436 U CN201606436 U CN 201606436U CN 2009201775524 U CN2009201775524 U CN 2009201775524U CN 200920177552 U CN200920177552 U CN 200920177552U CN 201606436 U CN201606436 U CN 201606436U
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- diaphragm
- push rod
- push
- braking
- brake
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- Expired - Fee Related
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Abstract
The utility model discloses an adjustable diaphragm brake air-chamber assembly, which comprises a resetting spring (1), a push disc (2), a diaphragm (3), a rear shell (4), a front shell (6), a clamp (5), a push rod (7), a connecting fork (9), a nut (8), an adjusting sleeve (10) and a round nut (11). The resetting spring (1) is placed on the push disc (2), the diaphragm (3) contacts with the push disc (2), the clamp (5) tightly clamps the rear shell (4), the diaphragm(3) and the front shell (6), the push rod (7) is integrally connected with the push disc (2), the connecting fork (9) is screwed onto the push rod (7), the nut (8) locks the connecting fork (9), the adjusting sleeves (10) tightly presses the resetting spring (1), and the round nut (11) is screwed onto the adjusting sleeve (10). The adjusting diaphragm brake air-chamber assembly is characterized in that the front shell (6) is provided with thread screwed with the adjusting sleeve (10). The adjustable diaphragm brake air-chamber assembly has the advantages that amount of compression of the resetting spring is adjusted through rotating the adjusting sleeve to adjust output force and response time of the push rod so as to conveniently compensate and eliminate driving force difference and brake time difference of brakes on the left side and the right side of a brake system due to manufacturing and mounting errors when braking and lead brake forces generated by the brakes on the left and right sides of the brake system to be equal, thereby effectively resolving problems of braking deviation.
Description
Technical field
The utility model belongs to the technical field of automobile pressure braking system, the particularly a kind of adjustable diaphragm brake actuator assembly that can eliminate braking deviation when automobile is slow to be braked.
Background technique
At present, typical diaphragm brake chamber assembly is made up of diaphragm chamber (being used for service brake) and two parts of spring chamber (being used for when braking is removed push rod being resetted), by feed and discharge pressurized air to diaphragm chamber, realizes running braking function.Running braking function is service brake air chamber assembly to be fed pressurized air act on generation power on the diaphragm, and actuate push rods acts on to be adjusted on the arm, adjusts arm rotating cam axle again, and then for wheel drag provides driving force, thereby realize service brake.
During braking, the pressurized air in service brake loop enters diaphragm chamber between rear case (4) and the diaphragm (3) by the A mouth, promotes diaphragm (3) push rod (7) is ejected; When braking was removed, diaphragm chamber gas was discharged by the A mouth again, and diaphragm chamber air pressure is reduced to barometric pressure, at effect lower push-rod (7) return of return spring (1), as shown in Figure 1.
Characteristics such as existing typical diaphragm brake chamber assembly is simple in structure with it, volume is less, adaptive capacity to environment is stronger are adopted by most auto vendors.But also there is the shortcoming that push rod ouput force and response time can not regulate in this air chamber, and this is unfavorable to eliminating the vehicle braked sideslip, and braking deviation has then directly damaged the handling and traffic safety of vehicle.
So-called braking deviation is meant the phenomenon that the vehicle in travelling changes direction of travel because of braking, is expressed as sideslip and sideslip left to the right usually.
A basic reason that causes braking deviation be when braking the braking force that produces of left and right sides break do not wait, and cause that reason that braking force does not wait can be divided into that the driving force that acts on the break of the left and right sides does not wait and two kinds of the time differences are braked in break existence in the left and right sides.Owing to adjust the work arm of force of the length of arm, so the minor variations of brake chamber push rod ouput force can cause the significant change of driving force much larger than camshaft.The gas that enters brake chamber in addition when slow braking is less, and air pressure is lower, so the variation of spring force to the influence of push rod ouput force also clearly.
Therefore, as long as a kind of brake chamber assembly that can regulate push rod ouput force and response time of invention, just can eliminate the braking time difference of left and right sides break existence and the driving force that acts on the break of the left and right sides is equated by regulating it, thereby the braking force that left and right sides break is produced equates, so just can eliminate the braking deviation phenomenon.
Summary of the invention
At above-mentioned situation, the utility model has carried out architecture advances to existing typical diaphragm brake chamber assembly, adjustment sleeve, thread bush and round nut have been set up on the original basis, designed a kind of adjustable diaphragm brake actuator assembly, by the amount of spring compression of this air chamber assembly is regulated the ouput force and the response time that can change the air chamber push rod.
The technical solution of the utility model is:
A kind of adjustable diaphragm brake actuator assembly, it comprises: return spring (1), place the push-plate (2) of described return spring, the diaphragm (3) that contacts with described push-plate, rear case (4), front case (6), tighten the clip (5) of described rear case, diaphragm, front case, the push rod (7) that is connected as a single entity with described push-plate, screw the clevis (9) on described push rod, lock the nut (8) of described clevis, it is characterized by: described front case (6) is provided with screw thread and the adjustment sleeve (10) that screws adjustment sleeve (10).
Described adjustable diaphragm brake actuator assembly further comprises round nut (11), and this round nut (11) screws on described adjustment sleeve (10).
Described front case (6) is gone up the screw thread that is provided with and is formed in the mode that thread bush (12) is fixed on the front case (6).
Described adjustment sleeve (10) front end is useful on the gap of rotary regulating sleeve.
Advantage of the present utility model is, regulate the decrement of return spring by rotating adjustment sleeve, regulate the ouput force and the response time of push rod, and then the driving force difference and braking time difference of left and right sides break when having compensated and eliminate the service brake that causes because of manufacturing and alignment error the braking system left and right sides easily, the braking force that left and right sides break is produced equates, thereby has solved the braking deviation problem effectively.
Description of drawings
Fig. 1 is the structural representation of existing typical diaphragm brake chamber assembly;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.
Fig. 2 shows according to adjustable diaphragm brake actuator assembly of the present utility model, and it comprises: return spring (1); Place the push-plate (2) of described return spring; The diaphragm (3) that contacts with described push-plate; Rear case (4); Front case (6); Tighten the clip (5) of described rear case, diaphragm, front case; The push rod (7) that is connected as a single entity with described push-plate; Screw the clevis (9) on described push rod; Lock the nut (8) of described clevis; Be fixed on the thread bush (12) of described front case inboard; Screw on described thread bush and compress the adjustment sleeve (10) of return spring; Screw the round nut (11) on described adjustment sleeve.
This air chamber assembly realizes that the principle and the method for braking force adjusting is as follows:
Because the adjustment sleeve (10) of this brake chamber of rotation assembly can make the decrement of return spring (1) change, by Hooke's law F=kx as can be known, therefore change has also taken place in the spring force that acts on push-plate (2) and the push rod (7), and then the ouput force of push rod also changes when making service brake, by Newton's second law F=ma and kinematical equation S=1/2 * at
2Know that in quality and stroke one timing, the response time of push rod, change also took place.The utility model makes the driving force difference of braking system left and right sides break and the braking time difference be compensated and eliminate by the change that utilizes push rod ouput force and response time just, the braking force that left and right sides break is produced equates, thereby has solved the braking deviation problem effectively.
With vehicle left during sideslip this brake chamber assembly be adjusted to example.Vehicle left the suffered driving force of sideslip explanation left side break greater than the braking of right side or left side break early than the right side, can be by reducing the suffered driving force of left side break, strengthen the braking response time of suffered driving force of right side break or prolongation left side break, shorten the braking response time of right side break and solve.
Unclamp and be arranged on vehicle left side provides the brake chamber of driving force for the left side break round nut (11), to put down mouthful opening slot of screw-driver insertion adjustment sleeve (10) front end, the rotation screw cutter drives the adjustment sleeve rotation, make adjustment sleeve indentation in air chamber, the decrement of spring this moment (1) increases with the indentation of adjustment sleeve in air chamber, the indentation amount of adjustment sleeve can be decided as required, after adjusting is finished round nut (11) is tightened.During service brake, pressurized gas enters diaphragm chamber between rear case (4) and the diaphragm (3) by the A mouth, promoting diaphragm (3) and push-plate (2) ejects push rod (7), owing to regulate the increase of rear spring decrement the spring force that acts on push-plate and the push rod is increased, and then the ouput force of push-plate and push rod is reduced, response time prolongs, by adjusting the transmission of arm and camshaft, the driving force that acts on the break of left side is reduced, response time delays, and then the braking force of left side break is reduced, period of braking delays.Utilize this characteristic can make the driving force difference and the braking time difference of the left and right sides break that the braking system left and right sides causes because of manufacturing and alignment error be compensated and eliminate, the braking force that left and right sides break is produced equates, thereby has solved the braking deviation problem effectively.The adjusting of left side brake chamber assembly also can be arranged on the vehicle right side and combine for the right side break provides the adjusting of the brake chamber assembly of driving force, the adjustment sleeve sense of rotation of right side brake chamber assembly is opposite with the left side when only regulating.Vehicle is similar when the regulating method during sideslip is with sideslip left to the right, and is just opposite when just the adjustment sleeve sense of rotation is with sideslip left.
After braking was removed, the diaphragm intracavity gas was discharged by the A mouth, under the effect of return spring (1), and push rod (7), push-plate (2) and diaphragm (3) return.
Claims (4)
1. adjustable diaphragm brake actuator assembly, it comprises: return spring (1), place the push-plate (2) of described return spring, the diaphragm (3) that contacts with described push-plate, rear case (4), front case (6), tighten the clip (5) of described rear case, diaphragm, front case, the push rod (7) that is connected as a single entity with described push-plate, screw the clevis (9) on described push rod, lock the nut (8) of described clevis, it is characterized by: described front case (6) is provided with screw thread and the adjustment sleeve (10) that screws adjustment sleeve (10).
2. the adjustable diaphragm brake actuator assembly described in claim 1 is characterized in that, this adjustable diaphragm brake actuator assembly further comprises round nut (11), and this round nut (11) screws on described adjustment sleeve (10).
3. as any described adjustable diaphragm brake actuator assembly in the claim 1 and 2, it is characterized in that described front case (6) is gone up the screw thread that is provided with and formed in the mode that thread bush (12) is fixed on the front case (6).
4. as any described adjustable diaphragm brake actuator assembly in the claim 1 and 2, it is characterized in that described adjustment sleeve (10) front end is useful on the gap of rotary regulating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201775524U CN201606436U (en) | 2009-09-05 | 2009-09-05 | Adjustable diaphragm brake air-chamber assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201775524U CN201606436U (en) | 2009-09-05 | 2009-09-05 | Adjustable diaphragm brake air-chamber assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606436U true CN201606436U (en) | 2010-10-13 |
Family
ID=42951142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201775524U Expired - Fee Related CN201606436U (en) | 2009-09-05 | 2009-09-05 | Adjustable diaphragm brake air-chamber assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606436U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103443477A (en) * | 2011-03-31 | 2013-12-11 | 费斯托股份有限两合公司 | Fluid-actuated diaphragm drive |
| CN104455114A (en) * | 2014-10-27 | 2015-03-25 | 麻城市博远制动科技有限公司 | Automobile air brake chamber |
| CN105485220A (en) * | 2016-01-19 | 2016-04-13 | 庄建文 | Parking braking part of disc-type spring brake chamber |
| CN113819168A (en) * | 2021-10-09 | 2021-12-21 | 中车青岛四方车辆研究所有限公司 | Electromechanical parking brake cylinder and brake system |
| CN113830046A (en) * | 2021-10-29 | 2021-12-24 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
-
2009
- 2009-09-05 CN CN2009201775524U patent/CN201606436U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103443477A (en) * | 2011-03-31 | 2013-12-11 | 费斯托股份有限两合公司 | Fluid-actuated diaphragm drive |
| CN103443477B (en) * | 2011-03-31 | 2016-07-13 | 费斯托股份有限两合公司 | Fluid actuated diaphragm driver |
| CN104455114A (en) * | 2014-10-27 | 2015-03-25 | 麻城市博远制动科技有限公司 | Automobile air brake chamber |
| CN105485220A (en) * | 2016-01-19 | 2016-04-13 | 庄建文 | Parking braking part of disc-type spring brake chamber |
| CN113819168A (en) * | 2021-10-09 | 2021-12-21 | 中车青岛四方车辆研究所有限公司 | Electromechanical parking brake cylinder and brake system |
| CN113819168B (en) * | 2021-10-09 | 2023-06-09 | 中车青岛四方车辆研究所有限公司 | Electromechanical parking brake cylinder and brake system |
| CN113830046A (en) * | 2021-10-29 | 2021-12-24 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
| CN113830046B (en) * | 2021-10-29 | 2022-06-21 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Tingyi Brake Co., Ltd. Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Tingyi Brake Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20140905 |
|
| EXPY | Termination of patent right or utility model |