CN110566611A - Brake actuating cylinder piston assembly with one-way valve - Google Patents
Brake actuating cylinder piston assembly with one-way valve Download PDFInfo
- Publication number
- CN110566611A CN110566611A CN201910814611.2A CN201910814611A CN110566611A CN 110566611 A CN110566611 A CN 110566611A CN 201910814611 A CN201910814611 A CN 201910814611A CN 110566611 A CN110566611 A CN 110566611A
- Authority
- CN
- China
- Prior art keywords
- piston
- valve
- pin
- brake
- piston assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 12
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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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- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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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
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/06—Pistons
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a brake actuator cylinder piston assembly with a one-way valve, which comprises a piston, wherein two caps, a valve and a pin are arranged in the piston, a spring is arranged between the two caps, the pin is arranged in a waist-shaped groove of the piston and a hole of a sleeve, the sleeve limits the axial position of the pin, and the pin moves away from or close to the valve in the waist-shaped groove of the piston to open or close the valve; the outer peripheral surface of the piston is provided with a spacer bush and a bowl-shaped seat, a spring is arranged between the spacer bush and the bowl-shaped seat, and the bowl-shaped seat is limited by a check ring. The valve is closed and opened by the reciprocating movement of the piston, and the oil passages of the oil storage cavity and the brake cavity are cut off and communicated, so that the pressure is built and released, and the brake and brake releasing functions of the brake actuating cylinder are realized.
Description
Technical Field
The invention belongs to the field of airplane brake systems, and relates to a brake actuating cylinder piston assembly with a one-way valve.
Background
In order to reduce the weight of the airplane, most of domestic airplanes which take off and land autonomously at present have no hydraulic source, and in order to meet the requirements of the airplane for taking off and landing braking, an electric hydrostatic braking actuator cylinder without the hydraulic source is required to be designed. Brake ram piston assemblies with check valves are designed to meet electro-hydrostatic brake rams. The oil storage cavity is used for storing working media required by the operation of the brake actuating cylinder, and the brake cavity is used for outputting oil to a brake device of a brake wheel and generating brake pressure for braking the brake device.
Disclosure of Invention
Object of the Invention
In order to meet the braking and brake releasing functions of the electric hydrostatic brake actuating cylinder, the invention provides a piston assembly of the brake actuating cylinder with a one-way valve, wherein the valve is closed and opened through the reciprocating movement of the piston, and the oil passages of an oil storage cavity and a brake cavity are cut off and communicated to meet the pressure building and pressure relief and realize the braking and brake releasing functions of the brake actuating cylinder.
Technical solution of the invention
In order to achieve the purpose, the invention adopts the following technical scheme:
A brake actuator cylinder piston assembly with a one-way valve comprises a piston, wherein two caps, a valve and a pin are arranged in the piston, a spring is arranged between the two caps, the pin is arranged in a waist-shaped groove of the piston and a hole of a sleeve, the sleeve limits the axial position of the pin, and the pin moves away from or close to the valve in the waist-shaped groove of the piston to open and close the valve; the outer peripheral surface of the piston is provided with a spacer bush and a bowl-shaped seat, a spring is arranged between the spacer bush and the bowl-shaped seat, and the bowl-shaped seat is limited by a check ring.
Preferably, the outer periphery of the end of the valve far away from the pin is also provided with a retaining ring.
Preferably, the valve is of a step shaft structure, and the valve is provided with a conical surface matched with the inner surface of the piston.
Preferably, one of the caps is mounted on the outer periphery of the end of the trap remote from the pin.
Preferably, a sealing ring is arranged between the cap arranged on the valve and the step surface of the valve.
Preferably, a retainer ring for limiting the position of the cap is arranged between the end of the piston and the cap far away from the valve.
Preferably, the position of the valve on the side wall of the piston is provided with a through hole.
Preferably, the axis of the pin is perpendicular to the piston axis.
preferably, a spring is provided between the step of the outer peripheral surface of the piston and the shroud.
Preferably, a seal ring is provided on an outer circumferential surface of the piston.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention has the advantages that:
(1) The sealing performance is good: the O-shaped sealing ring is used for sealing between the piston and the shell, and the valve and the piston are sealed by the conical surface and the sealing ring, so that the brake actuating cylinder has good sealing performance.
(2) The oil pollution resistance is high: the fit clearance between the valve and the piston and between the piston and the shell is large, the valve is not easily affected by the oil pollution degree, and the valve can normally work in poor oil.
(3) The use reliability is high: the piston excircle and the sealing washer on it have good wearability, and valve and piston adopt the conical surface to seal the sealed mode of sealing washer, can guarantee that piston assembly has the higher advantage of reciprocating motion number of times.
Drawings
FIG. 1 is a schematic diagram of the piston assembly of a brake ram having a check valve in accordance with the present invention.
Fig. 2 is a view showing a piston structure.
Fig. 3 is a view showing a structure of the shutter.
In the figure: 1-piston, 1-1-retainer ring groove, 1-2-hole matched with valve, 1-3-waist-shaped groove, 1-4-retainer ring groove, 2-retainer ring II, 3-cap II, 4-seal ring II, 5-spacer bush, 6-spring II, 7-spring III, 8-bowl-shaped seat, 9-retainer ring II, 10-sleeve, 11-pin, 12-sleeve cover, 13-valve, 13-1-conical surface matched with piston and 13-2-excircle matched with piston.
Detailed Description
The detailed description of the embodiments of the present invention is provided in conjunction with the summary of the invention and the accompanying drawings.
A brake actuating cylinder piston assembly with a one-way valve comprises a piston 1, a check ring I17, a cap I16, a spring I15, a cap II 3, a valve 13 and a pin 11 are sequentially arranged in the piston 1, the cap II 3 is installed on the outer peripheral surface of the end part of the valve 13, the check ring 17 is installed through a check ring groove 1-1 in the piston 1 and used for limiting the position of the cap I16, a waist-shaped groove 1-3 penetrating through the side wall of the piston 1 is formed in the middle of the piston 1, the pin 11 is installed in the waist-shaped groove 1-3 of the piston 1, the axis of the pin 11 is vertical to the axis of the piston, a sleeve 10 is arranged on the outer peripheral surface of the piston 1, holes penetrating through two opposite side walls of the sleeve 10 are formed in the side wall of the sleeve 10, two end parts of the pin 11 respectively extend into the side wall of the sleeve 10, a sleeve 12 is arranged on the outer side, the pin 11 moves in the waist-shaped groove 1-3 of the piston 1 to be far away from or close to the valve 13, so that the valve 13 is opened and closed; and a retainer ring II 2 is arranged on the outer peripheral surface of one end of the valve 13 far away from the pin 11. The valve 13 is of a step shaft structure, and the valve 13 is provided with a conical surface 13-1 matched with the inner surface of the piston 1. And a sealing ring I14 is arranged between the cap II 3 and the step surface of the valve 13. And a sealing ring II 4 is arranged on the peripheral surface of the piston 1. The position of the piston side wall valve 13 is provided with a through hole.
The outer peripheral surface of the piston 1 is provided with a spacer 5 and a bowl-shaped seat 8, a spring III 7 is arranged between the spacer 5 and the bowl-shaped seat 8, the bowl-shaped seat 8 is limited by a retainer ring II 9, and the retainer ring II 9 is arranged through retainer ring grooves 1-4 on the piston 1.
The piston assembly is designed by adopting a one-way valve structure, the piston 1 moves leftwards, a gap delta between the valve 13 and the piston 1 is closed, and a working medium for generating brake pressure and the brake pressure are provided for a brake wheel; when the piston 1 moves rightwards to the initial position, the gap delta is opened, the brake pressure is relieved, and the brake is released.
Claims (10)
1. a brake actuator cylinder piston assembly with a check valve is characterized in that: the piston comprises a piston, two caps, a valve 13 and a pin (11) are arranged in the piston, a spring is arranged between the two caps, the pin (11) is arranged in a waist-shaped groove of the piston (1) and a hole of a sleeve (10), a sleeve cover (12) limits the axial position of the pin (11), and the pin (11) moves away from or close to the valve 13 in the waist-shaped groove of the piston (1) to open and close the valve (13); the outer peripheral surface of the piston is provided with a spacer bush 5 and a bowl-shaped seat 8, a spring is arranged between the spacer bush 5 and the bowl-shaped seat 8, and the bowl-shaped seat 8 is limited by a check ring.
2. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: the shutter 13 is also provided with a retaining ring on its outer periphery at the end remote from the pin 11.
3. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: the valve 13 is of a step shaft structure, and the valve 13 is provided with a conical surface matched with the inner surface of the piston.
4. A brake ram piston assembly with a check valve as claimed in claim 3 wherein: one of the caps is mounted on the outer periphery of the shutter (13) at the end remote from the pin.
5. A brake ram piston assembly with a check valve as claimed in claim 3 wherein: a sealing ring is arranged between a cap arranged on the valve (13) and the step surface of the valve (13).
6. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: a retainer ring for limiting the position of the cap is arranged between the end part of the piston (1) and the cap far away from the valve 13.
7. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: the position of the piston side wall valve 13 is provided with a through hole.
8. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: the axis of the pin 11 is perpendicular to the piston axis.
9. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: a spring is arranged between the step on the peripheral surface of the piston and the sleeve cover (12).
10. A brake ram piston assembly with a check valve as claimed in claim 1 wherein: the peripheral surface of the piston is provided with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814611.2A CN110566611A (en) | 2019-08-30 | 2019-08-30 | Brake actuating cylinder piston assembly with one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814611.2A CN110566611A (en) | 2019-08-30 | 2019-08-30 | Brake actuating cylinder piston assembly with one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110566611A true CN110566611A (en) | 2019-12-13 |
Family
ID=68777201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910814611.2A Pending CN110566611A (en) | 2019-08-30 | 2019-08-30 | Brake actuating cylinder piston assembly with one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110566611A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698930A1 (en) * | 1992-12-04 | 1994-06-10 | Gregoire Besson Ets | Hydraulically operated brake control for tractor or tracked vehicles - includes two concentrically disposed jacks whose bodies define variable volume pressure chamber between them, with body of internal jack forming piston of external jack |
| WO2011050766A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostatic clutch actuator |
| CN105216776A (en) * | 2015-05-12 | 2016-01-06 | 西安航空制动科技有限公司 | The pneumatic brake valve of a kind of 21MPa |
| CN206067730U (en) * | 2016-08-25 | 2017-04-05 | 吉林东光奥威汽车制动***有限公司 | The center valve type brake main cylinder of valve hole part integration |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN108412922A (en) * | 2018-05-07 | 2018-08-17 | 西安航空制动科技有限公司 | A kind of airplane hydraulic pressure brake system pressure regulator |
| CN108502147A (en) * | 2018-05-24 | 2018-09-07 | 南京航空航天大学 | One kind inflating ski type braking device and method from energy regenerative |
| CN211778670U (en) * | 2019-08-30 | 2020-10-27 | 贵州新安航空机械有限责任公司 | Brake actuating cylinder piston assembly with one-way valve |
-
2019
- 2019-08-30 CN CN201910814611.2A patent/CN110566611A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2698930A1 (en) * | 1992-12-04 | 1994-06-10 | Gregoire Besson Ets | Hydraulically operated brake control for tractor or tracked vehicles - includes two concentrically disposed jacks whose bodies define variable volume pressure chamber between them, with body of internal jack forming piston of external jack |
| WO2011050766A1 (en) * | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Hydrostatic clutch actuator |
| CN102575730A (en) * | 2009-10-29 | 2012-07-11 | 舍弗勒技术股份两合公司 | Static pressure type clutch actuator |
| CN105216776A (en) * | 2015-05-12 | 2016-01-06 | 西安航空制动科技有限公司 | The pneumatic brake valve of a kind of 21MPa |
| CN106800087A (en) * | 2015-11-26 | 2017-06-06 | 中国直升机设计研究所 | A kind of manned wheel braking controller for helicopter |
| CN206067730U (en) * | 2016-08-25 | 2017-04-05 | 吉林东光奥威汽车制动***有限公司 | The center valve type brake main cylinder of valve hole part integration |
| CN108412922A (en) * | 2018-05-07 | 2018-08-17 | 西安航空制动科技有限公司 | A kind of airplane hydraulic pressure brake system pressure regulator |
| CN108502147A (en) * | 2018-05-24 | 2018-09-07 | 南京航空航天大学 | One kind inflating ski type braking device and method from energy regenerative |
| CN211778670U (en) * | 2019-08-30 | 2020-10-27 | 贵州新安航空机械有限责任公司 | Brake actuating cylinder piston assembly with one-way valve |
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