CN114278687A - Marine environment resistant air pressure brake valve - Google Patents
Marine environment resistant air pressure brake valve Download PDFInfo
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- CN114278687A CN114278687A CN202111384141.4A CN202111384141A CN114278687A CN 114278687 A CN114278687 A CN 114278687A CN 202111384141 A CN202111384141 A CN 202111384141A CN 114278687 A CN114278687 A CN 114278687A
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Abstract
The invention relates to a marine environment resistant air pressure brake valve, and belongs to the field of emergency braking of airplanes. The sealing structure for isolating the inner cavity of the air pressure valve from the outside atmosphere is designed, namely, a through hole for connecting the outside atmosphere and the exhaust cavity on a shell of the common air pressure valve is sealed, a mounting seat for mounting an exhaust pipe joint is designed on the shell, the exhaust pipe joint of an exhaust pipeline on a connecting machine is used for exhausting the gas in the exhaust cavity out of the machine body when the brake is loosened, meanwhile, the through hole on a pressure head for exhausting the gas in the operation cavity is sealed, the sealing structure is additionally arranged between the pressure head and an adjusting nut, the through hole is formed in an exhaust valve component, the operation cavity and the exhaust cavity are connected, the sealing structure additionally arranged between the pressure head and the adjusting nut is avoided, and the operation cavity is caused to be inflated, and the brake operation is influenced. The invention solves the problem that components in the inner cavity of the air pressure brake valve are easy to corrode due to structural defects when the air pressure brake valve is used in a marine environment.
Description
Technical Field
The invention relates to the field of emergency braking of airplanes, in particular to a marine environment air pressure resistant brake valve.
Background
With the increasing importance of our country on ocean interests, in recent years, a plurality of machine types which need to meet the use requirements of the ocean environment are established, the wheel braking systems used by the machine types need to have higher requirements on heat and humidity resistance, mould resistance and acid salt mist resistance, and all airborne equipment used in the land environment needs to be improved in adaptability. Emergent brake system can divide into hydraulic pressure and two kinds of types of atmospheric pressure from the working medium, and the atmospheric pressure brake valve provides controllable brake pressure as an important part of the emergent brake system of atmospheric pressure for wheel brake equipment for control aircraft brake under the emergency condition, the inside spare part of atmospheric pressure brake valve does not possess the hydraulic oil protection of hydraulic pressure brake valve, compares the hydraulic pressure brake valve and more need strengthen the inside corrosion protection of product. Therefore, whether the structure of the air pressure brake valve is further improved or not has important influence on the safety and the reliability of the air pressure emergency brake system in the marine environment.
The atmospheric pressure brake valve of emergent braking system of ordinary atmospheric pressure generally trompil makes the direct atmosphere in inside exhaust chamber on the casing for gas in the brake chamber of discharging when loosening the brake, the brake pressure of release brake equipment piston, this brake valve comprises depression bar, a spring, exhaust valve subassembly, the ejector pin, air inlet valve subassembly, casing etc. possesses the function of control brake pressure when emergent brake, but when using in marine environment, outside atmosphere is direct to inside, can bring the corruption to spare parts such as the spring of inside, influence the security and the reliability of emergent braking system of atmospheric pressure.
The invention with the publication number of CN105216776A discloses a 21MPa air pressure brake valve, wherein an inner cavity is directly communicated with the atmosphere, the internal protection under the marine environment is not considered, and the problem of internal corrosion is easy to occur when the air pressure brake valve is used in the marine environment.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defect that components in the inner cavity of the air pressure brake valve are easy to corrode due to structural defects when the air pressure brake valve is used in a marine environment in the prior art, the invention provides the marine environment resistant air pressure brake valve.
Technical scheme
A marine environment resistant air pressure brake valve comprises a pressure head, an adjusting nut, a shell, a pressure reducing spring, an exhaust valve assembly, a brake pipe joint, a piston, an air inlet valve assembly, a screw plug, an air inlet valve seat and an air inlet pipe joint; the air inlet valve assembly, the air inlet valve seat and the piston are all tightly pressed in a left end hole of the shell through a screw plug; the exhaust valve assembly, the pressure reducing spring and the pressure head are fixed in a hole at the right end of the shell through an adjusting nut; the brake pipe joint is connected and fixed with the upper end hole of the shell through threads; the air inlet pipe joint is connected with the screw plug through threads; the exhaust cavity of the shell is provided with an exhaust hole communicated with the outside atmosphere, an exhaust pipe joint mounting hole is additionally arranged at the position of the exhaust cavity at the lower end and used for mounting an exhaust pipe joint, and the exhaust pipe joint is communicated with an exhaust pipeline on the machine; an inclined hole leading to the exhaust cavity is formed between the inner cavity and the outer edge of the exhaust valve assembly; the adjusting nut is additionally provided with a sealing structure for sealing the operation cavity and the outside atmosphere; the pressure head cancels a through hole for communicating the operation cavity with the outside atmosphere and is additionally provided with a structure for limiting.
The sealing structure is an O-shaped sealing ring.
The limiting structure is as follows: the design has the screw thread part on the path in the pressure head outside for install first lock nut, position through adjusting first lock nut, the biggest stroke that the pressure head removed to the left side when injecing the brake, screw thread part's axial design is slotted, the lock gasket is installed between two first lock nuts, the lock gasket hole passes pressure head screw thread part timesharing, the key on the hole is spacing in the inslot of pressure head, the forked tail structure of lock gasket upper end and the square protruding structure of lower extreme turn over respectively to two first lock nut's hexagonal side, in order to restrict the removal of first lock nut on the pressure head.
The left end of the pressure head is provided with a cross groove for preventing the pressure head from rotating along with the pressure head when the right end rotates the first locking nut.
Springs are arranged between the exhaust valve component and the shell, between the piston and the air inlet valve seat, and between the air inlet valve component and the screw plug, so that the initial positions of the air inlet valve component, the piston and the exhaust valve component can be recovered when no operating force acts.
The exhaust pipe joint is fixed on the mounting hole through a third locking nut.
The inclined hole is phi 2.
Advantageous effects
Compared with the common air pressure brake valve, the air pressure brake valve resisting the marine environment provided by the invention has the following characteristics: the sealing structure for isolating the inner cavity of the air pressure valve from the outside atmosphere is designed, namely, a through hole for connecting the outside atmosphere and the exhaust cavity on a shell of the common air pressure valve is sealed, a mounting seat for mounting an exhaust pipe joint is designed on the shell, the exhaust pipe joint of an exhaust pipeline on a connecting machine is used for exhausting the gas in the exhaust cavity out of the machine body when the brake is loosened, meanwhile, the through hole on a pressure head for exhausting the gas in the operation cavity is sealed, the sealing structure is additionally arranged between the pressure head and an adjusting nut, the through hole is formed in an exhaust valve component, the operation cavity and the exhaust cavity are connected, the sealing structure additionally arranged between the pressure head and the adjusting nut is avoided, and the operation cavity is caused to be inflated, and the brake operation is influenced.
As shown in the attached drawing 3, the exhaust hole on the original shell, when realizing the exhaust function of the product, also make the product exhaust chamber directly communicate with the external atmosphere environment, the parts such as the easily corroded spring of the exhaust chamber are directly exposed in the external atmosphere environment, the improved shell is as shown in the attached drawing 2, the exhaust pipe on the exhaust pipe joint connecting machine of the exhaust chamber through installing on the shell, the external corrosive substance is weakened through the exhaust pipe before entering the product, most of the external corrosive substance is attached to the exhaust pipe, when the product works next time, the exhaust gas can blow off the attached partial corrosive substance, further reduce the corrosive substance and enter the product exhaust chamber.
Through-hole on the original pressure head, be used for discharging at the product during operation and control the chamber gaseous, avoid controlling the chamber to suppress pressure and influence product property ability, the chamber is controlled to this through-hole of external corrosive substance accessible entering product, parts such as corrosion inside spring, the product after the improvement has sealed the through-hole on the pressure head shown in figure 9, and increase seal structure between the pressure head and the illustrated adjusting nut of complex figure 7, avoid controlling the direct external atmosphere of intercommunication in chamber, it changes trompil on the inside exhaust valve shown in figure 5 of product to control the chamber exhaust, exhaust coupling through connecting exhaust valve, discharge through the on-machine exhaust pipeline again.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a housing portion of the present invention.
FIG. 3 is a schematic structural view of a brake valve housing of the prior art.
Fig. 4 is a schematic structural view of the exhaust valve assembly of the present invention.
Fig. 5 is a schematic structural view of a related art exhaust valve assembly.
Fig. 6 is a schematic structural view of the adjusting nut of the present invention.
Fig. 7 is a schematic structural view of a prior art adjusting nut.
Figure 8 is a schematic diagram of the construction of the indenter of the present invention.
Figure 9 is a schematic diagram of the construction of a prior art indenter.
Fig. 10 is a schematic view of the stop washer.
In the figure:
1-a first locking nut; 2-a stop washer; 3-pressing head; 4-sealing ring; 5-adjusting the nut; 6-a pressure reducing spring; 7-a second lock nut; 8-a shell; 9-exhaust valve assembly; 10-a third lock nut; 11-a spring; 12-exhaust pipe joint; 13-a piston; 14-brake pipe joint; 15-a spring; 16-an intake valve seat; 17-an intake valve assembly; 18-a spring; 19-a plug screw; 20-a fourth lock nut; 21-inlet pipe joint; 22-an air inlet chamber; 23-a reduced pressure chamber; 24-an exhaust chamber; 25-operating chamber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention comprises a locking nut, a stop washer, a pressure head, an adjusting nut, a shell, a pressure reducing spring, an exhaust valve component, an exhaust pipe joint, a brake pipe joint, a piston, an air inlet valve component, a screw plug and an air inlet pipe joint; wherein: the air inlet valve assembly, the air inlet valve seat and the piston are all tightly pressed in a left end hole of the shell through a screw plug; the exhaust valve assembly, the pressure reducing spring and the pressure head are fixed in a hole at the right end of the shell through an adjusting nut; the exhaust pipe joint is connected with the lower end hole of the shell through threads and the angle of the exhaust pipe joint is fixed by a locking nut; the brake pipe joint is connected and fixed with the upper end hole of the shell through threads; the air inlet pipe joint is connected with the screw plug through threads, and the angle of the air inlet pipe joint is fixed by a locking nut.
Springs are arranged between the exhaust valve component and the shell, between the piston and the air inlet valve seat, and between the air inlet valve component and the screw plug, so that the initial positions of the air inlet valve component, the piston and the exhaust valve component can be recovered when no operating force acts.
When the airplane lands and brakes, a pilot presses down the pressure head through the operating lever on the airplane and drives the decompression spring and the exhaust valve assembly to press the exhaust valve assembly on the piston so as to separate the decompression cavity from the exhaust cavity. When the pressure head is pressed down continuously, the piston pushes the air inlet valve assembly open through a small ejector rod on the air inlet valve assembly, air of an air source enters the decompression cavity from the air inlet cavity, and the air enters the brake device after being decompressed to brake. When the locking nut on the outer diameter of the pressure head is just close to the adjusting nut, the pressure head reaches the maximum stroke, and the air pressure brake valve outputs the maximum brake pressure.
As shown in fig. 1, the present embodiment includes a first lock nut 1, a stop washer 2, a pressure head 3, a seal ring 4, an adjusting nut 5, a pressure reducing spring 6, a second lock nut 7, a housing 8, an exhaust valve assembly 9, a third lock nut 10, a first spring 11, an exhaust pipe joint 12, a piston 13, a brake pipe joint 14, a second spring 15, an intake valve seat 16, an intake valve assembly 17, a third spring 18, a screw plug 19, a fourth lock nut 20, and an intake pipe joint 21.
As shown in fig. 2, the housing 8 is a carrier of the embodiment, and the left end, the upper end and the right end of the housing 8 are consistent with the prior art. The invention mainly relates to a lower end structure of a shell 8.
The air inlet pipe joint 21 is connected with the left end of the screw plug 19 through threads, and the installation angle of the air inlet pipe joint 21 is fixed through a fourth locking nut 20.
The piston 13 at the left end of the housing 8 is pressed against the inner step of the housing 8 by the second spring 15, and the intake valve seat 16 is pressed against the outer step at the left end of the housing 8 by the screw plug 19 screwed into the housing 8. The air inlet valve assembly 17 is pressed on the air inlet valve seat 16 through a third spring 18, the spherical surface of a sealing element on the air inlet valve assembly 17 is in contact sealing with the conical surface on the air inlet valve seat 16, an O-shaped sealing ring is arranged between the shell 8 and the air inlet valve seat 16, and the O-shaped sealing ring and the spherical surface of the sealing element on the air inlet valve assembly 9 are used for isolating air in the air inlet cavity 22 and air in the brake cavity. An O-shaped sealing ring is arranged between the shell 8 and the piston 13 to play a role in isolating the brake cavity from the exhaust cavity 24, and the upper end of the shell 8 is provided with a brake pipe joint 14.
A first spring 11 is installed in an exhaust chamber 24 communicating with the inside of the lower end of the housing 8, and an end surface of the first spring 11 is attached to a step surface of an outer edge of the exhaust valve assembly 9 to support the exhaust valve assembly 9. The decompression spring 6 is positioned in the right end control cavity of the shell, and two ends of the decompression spring 6 are in contact with the inner cavity of the exhaust valve assembly 9 and the inner cavity of the pressure head 3; the pressure head 3 is limited in the control cavity through an adjusting nut 5, and the position of the adjusting nut 5 is adjusted to ensure the gap between the exhaust valve assembly 9 and the piston 13; the clearance is determined according to the exhaust time of the product, after the adjustment is finished, the position of the adjusting nut 5 is fixed through the second locking nut 7, the lower end of the shell 8 is provided with the exhaust pipe joint 12, and after the exhaust pipe joint 12 rotates to a proper angle, the position is fixed through the third locking nut 10.
The exhaust valve assembly 9 is shown in fig. 4, a rubber sealing surface is vulcanized in the center of the end surface corresponding to the piston 13, when the brake is performed, the exhaust valve assembly moves leftwards, and the rubber sealing surface is in contact with a boss on the end surface of the piston to achieve the purpose of isolating the brake cavity from the exhaust cavity. A phi 2 inclined hole is formed between the inner cavity and the outer edge of the exhaust valve assembly 9 and leads to the exhaust cavity, so that the phi 2 inclined hole on the pressure head in the prior art is replaced, and the control cavity is prevented from being inflated during braking and brake releasing.
The adjusting nut 5 is sleeved on the outer circumferential surface of the right end of the shell 8 through threads, as shown in figure 6, a sealing ring groove is designed in an inner hole of the adjusting nut, and a sealing ring 4 is arranged in the sealing ring groove and used for movably sealing the outer small diameter of the pressure head 3.
The design has the screw thread part on the diameter in the pressure head 3 outside that figure 8 shows for install first lock nut 1, through the position of adjusting first lock nut 1, the biggest stroke that the pressure head moved to the left side during the limited brake, the axial design of screw thread part is slotted, stop washer 2 is installed between two first lock nut 1, 2 holes in stop washer pass pressure head screw thread part timesharing, the key on the hole is spacing in the inslot of pressure head 3, the square protruding structure of forked tail structure and the lower extreme of 2 upper ends of stop washer turn over the hexagonal side of two first lock nut 1 respectively, in order to restrict the removal of first lock nut 1 on pressure head 3. The left end of the pressure head 3 is provided with a cross groove for preventing the pressure head 3 from rotating along with the first locking nut 1 when the right end rotates.
The exhaust cavity of the shell 8 shown in figure 2 partially eliminates 6 phi 4 exhaust holes communicated with the outside atmosphere on the exhaust cavity of the shell in the prior art, and an exhaust pipe joint 12 mounting hole is redesigned at the position of the exhaust cavity and used for mounting an exhaust pipe joint 12, and the exhaust pipe joint 12 is communicated with an exhaust pipeline on a machine.
The vent valve assembly 9 shown in fig. 4 adds a through hole communicating the operation chamber and the vent chamber to the structure of the prior art vent valve assembly.
The adjusting nut 5 shown in fig. 6 adds to the prior art adjusting nut structure a sealing structure for sealing the operating chamber from the outside atmosphere.
The indenter 3 shown in fig. 8 eliminates the through hole for communicating the manipulation chamber with the outside atmosphere in the prior art indenter structure, and adds a structure for limiting.
The working process of the marine environment resistant air pressure brake valve is that the pressure head 3 is pressed down to drive the pressure reducing spring 6, force is transmitted to the exhaust valve component 9, and the pressure reducing cavity and the exhaust cavity are isolated. When the pressure head 3 is continuously pressed, the piston 13 jacks the air inlet valve assembly 17 through the ejector rod on the air inlet valve assembly 17, air source gas enters the brake cavity from the air inlet cavity, the gas enters the brake device after being decompressed to brake, the pressure head 3 is continuously pressed, the first locking nut 1 is close to the adjusting nut 5 to a stop position, and the product can reach the maximum decompression pressure.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (7)
1. A marine environment resistant air pressure brake valve comprises a pressure head (3), an adjusting nut (5), a shell (8), a pressure reducing spring (6), an exhaust valve component (9), a brake pipe joint (14), a piston (13), an air inlet valve component (17), a screw plug (19), an air inlet valve seat (16) and an air inlet pipe joint (21); the air inlet valve component (17), the air inlet valve seat (16) and the piston (13) are all pressed in a left end hole of the shell (8) through a screw plug (19); the exhaust valve assembly (9), the pressure reducing spring (6) and the pressure head (3) are fixed in a hole at the right end of the shell (8) through an adjusting nut (5); the brake pipe joint (14) is connected and fixed with the upper end hole of the shell (8) through threads; the air inlet pipe joint (21) is connected with the screw plug (19) through threads; the exhaust device is characterized in that an exhaust hole communicated with the outside atmosphere is canceled in an exhaust cavity of the shell (8), an exhaust pipe joint (12) mounting hole is newly added at the position of an exhaust cavity at the lower end for mounting the exhaust pipe joint (12), and the exhaust pipe joint (12) is communicated with an exhaust pipeline on the device; an inclined hole is formed between the inner cavity and the outer edge of the exhaust valve component (9) and leads to the exhaust cavity; the adjusting nut (5) is additionally provided with a sealing structure for sealing the operation cavity and the outside atmosphere; the pressure head (3) cancels a through hole for communicating the operation cavity with the outside atmosphere and is additionally provided with a structure for limiting.
2. A marine environment resistant pneumatic brake valve according to claim 1, wherein the sealing structure is an O-ring (4).
3. The marine environment air pressure resistant brake valve as claimed in claim 1, wherein the limiting structure is: the design has the screw thread part on pressure head (3) outside path for install first lock nut (1), through the position of adjusting first lock nut (1), the biggest stroke that the pressure head moved to the left side during the limited brake, the axial design of screw thread part is slotted, install between two first lock nut (1) stop gasket (2), stop gasket (2) hole passes pressure head screw thread part time-sharing, the key on the hole is spacing in the inslot of pressure head (3), the hexagonal side of two first lock nut (1) is turned over respectively to the forked tail structure of stop gasket (2) upper end and the square protruding structure of lower extreme, in order to restrict the removal of first lock nut (1) on pressure head (3).
4. The marine environment resistant air pressure brake valve according to claim 1, characterized in that the left end of the pressure head (3) is provided with a cross-shaped groove for preventing the pressure head (3) from rotating along with the first locking nut (1) when the right end rotates.
5. A marine environment resistant air pressure brake valve according to claim 1, characterized in that springs are arranged between the exhaust valve assembly (9) and the housing (8), between the piston (13) and the inlet valve seat (16), and between the inlet valve assembly (17) and the screw plug (19) to restore the initial position of the inlet valve assembly (17), the piston (13) and the exhaust valve assembly (9) when no operating force is applied.
6. A marine environment resistant pneumatic brake valve according to claim 1, wherein the exhaust fitting (12) is secured to the mounting hole by a third locking nut (10).
7. The marine environment resistant pneumatic brake valve of claim 1, wherein the angled hole is Φ 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384141.4A CN114278687B (en) | 2021-11-15 | 2021-11-15 | Ocean environment-resistant pneumatic brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111384141.4A CN114278687B (en) | 2021-11-15 | 2021-11-15 | Ocean environment-resistant pneumatic brake valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114278687A true CN114278687A (en) | 2022-04-05 |
| CN114278687B CN114278687B (en) | 2023-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111384141.4A Active CN114278687B (en) | 2021-11-15 | 2021-11-15 | Ocean environment-resistant pneumatic brake valve |
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| Country | Link |
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| CN (1) | CN114278687B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB212009A (en) * | 1922-12-20 | 1924-03-06 | Richard Thomson Glascodine | Improvements in or relating to railway vehicle braking systems |
| ES294988A1 (en) * | 1962-12-31 | 1964-04-16 | Bendix Westinghouse Automotive | Brake mechanism |
| GB1270098A (en) * | 1968-09-23 | 1972-04-12 | Automotive Prod Co Ltd | Improvements in or relating to vehicle braking mechanism |
| GB1369181A (en) * | 1972-02-22 | 1974-10-02 | Bendix Corp | Tandem spring and serivce brace actuator |
| GB1373196A (en) * | 1972-04-03 | 1974-11-06 | Bendix Corp | Tandem spring and service brake actuator |
| GB1444865A (en) * | 1973-08-31 | 1976-08-04 | Gen Signal Corp | Braking system for a light rail vehicle |
| DE4038032A1 (en) * | 1990-11-29 | 1992-06-04 | Teves Gmbh Alfred | Automatic adjustment for disc brake - has brake piston, with two adjustment sections, auxiliary piston and friction coupling |
| US5601160A (en) * | 1994-10-20 | 1997-02-11 | Case Corporation | Hydraulically actuated brake assembly for an off-highway implement |
| DE102008061346A1 (en) * | 2008-12-10 | 2010-06-17 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Spring brake cylinder with external venting |
| 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 |
| CN106043258A (en) * | 2016-07-26 | 2016-10-26 | 聂瑞波 | Breaker pump and applications thereof on loaders |
| 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 |
| CN208295002U (en) * | 2018-01-19 | 2018-12-28 | 常州市胜彪标准件模具有限公司 | A kind of internal respiration structure spring brake chamber |
| CN212744801U (en) * | 2020-06-24 | 2021-03-19 | 桐乡市博达金属压铸有限公司 | Piston type braking air chamber inner breather valve |
-
2021
- 2021-11-15 CN CN202111384141.4A patent/CN114278687B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB212009A (en) * | 1922-12-20 | 1924-03-06 | Richard Thomson Glascodine | Improvements in or relating to railway vehicle braking systems |
| ES294988A1 (en) * | 1962-12-31 | 1964-04-16 | Bendix Westinghouse Automotive | Brake mechanism |
| GB1270098A (en) * | 1968-09-23 | 1972-04-12 | Automotive Prod Co Ltd | Improvements in or relating to vehicle braking mechanism |
| GB1369181A (en) * | 1972-02-22 | 1974-10-02 | Bendix Corp | Tandem spring and serivce brace actuator |
| GB1373196A (en) * | 1972-04-03 | 1974-11-06 | Bendix Corp | Tandem spring and service brake actuator |
| GB1444865A (en) * | 1973-08-31 | 1976-08-04 | Gen Signal Corp | Braking system for a light rail vehicle |
| DE4038032A1 (en) * | 1990-11-29 | 1992-06-04 | Teves Gmbh Alfred | Automatic adjustment for disc brake - has brake piston, with two adjustment sections, auxiliary piston and friction coupling |
| US5601160A (en) * | 1994-10-20 | 1997-02-11 | Case Corporation | Hydraulically actuated brake assembly for an off-highway implement |
| DE102008061346A1 (en) * | 2008-12-10 | 2010-06-17 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Spring brake cylinder with external venting |
| 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 |
| CN106043258A (en) * | 2016-07-26 | 2016-10-26 | 聂瑞波 | Breaker pump and applications thereof on loaders |
| CN208295002U (en) * | 2018-01-19 | 2018-12-28 | 常州市胜彪标准件模具有限公司 | A kind of internal respiration structure spring brake chamber |
| CN212744801U (en) * | 2020-06-24 | 2021-03-19 | 桐乡市博达金属压铸有限公司 | Piston type braking air chamber inner breather valve |
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| Publication number | Publication date |
|---|---|
| CN114278687B (en) | 2023-06-30 |
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