CN107719351A - Spring brake cylinder and internal respiration structure - Google Patents
Spring brake cylinder and internal respiration structure Download PDFInfo
- Publication number
- CN107719351A CN107719351A CN201711111557.2A CN201711111557A CN107719351A CN 107719351 A CN107719351 A CN 107719351A CN 201711111557 A CN201711111557 A CN 201711111557A CN 107719351 A CN107719351 A CN 107719351A
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- China
- Prior art keywords
- piston
- spiracle
- breathing
- respiration
- spring
- 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
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 113
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 8
- 239000008187 granular material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
- B60T13/38—Brakes applied by springs or weights and released by compressed air
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of internal respiration structure, it is characterised in that：Including respiration channel, the side wall of respiration channel is provided with the first spiracle and the second spiracle, and the axis direction of the first spiracle and the second spiracle along respiration channel is set；One end of respiration channel, which is provided with, to be blocked, second spiracle is located at the first spiracle close to the side blocked, and it is slidably matched in respiration channel with it provided with breathing piston, the other end of respiration channel, which is provided with, to be used to apply axial force to breathing piston and makes breathing piston with blocking the first spring being engaged, one end distance second blocked towards breathing piston breathes radius of the distance less than the second spiracle of axially bored line, and when breathing piston and the blocking is engaged, breathe the other end end face of piston and be provided with gap between the first spiracle and the second spiracle or between the breathing piston and the first spiracle, respiration channel is provided between one end of the first spring and the first spiracle to be connected by the gap.
Description
Technical field
It is specifically a kind of spring brake cylinder and internal respiration knot the invention belongs to vehicle braking and its component technology field
Structure.
Background technology
It is made up of brake cylinder head, piston, piston rod, leather cup and release spring etc., by the effect of triple valve, makes compression empty
When gas enters checking cylinder, advance the plunger through a set of base apparatus and play braking action.Existing spring brake cylinder directly passes through
Stomata on cylinder body realizes the connection between parking chamber and air, and the granule foreign easily caused in air flows into parking chamber piston
Bottom, wear plunger shaft, and the problems such as little particle can cause piston hair fastener, gas leakage.
The content of the invention
In view of this, it is an object of the invention to provide a kind of spring brake cylinder and internal respiration structure, can effectively improve
Product service life and environmental suitability.
To reach above-mentioned purpose, the present invention provides following technical scheme：
Present invention firstly provides a kind of internal respiration structure, including respiration channel, the side wall of the respiration channel is provided with first
Spiracle and the second spiracle, the axis direction of first spiracle and the second spiracle along the respiration channel are set；
One end of the respiration channel, which is provided with, to be blocked, and second spiracle is located at first spiracle close to the one of the blocking
Side, and be slidably matched in the respiration channel with it provided with breathing piston, the other end of the respiration channel, which is provided with, to be used for institute
Breathing piston is stated to apply axial force and the breathing piston is blocked the first spring for being engaged with described, it is described block towards
One end of the breathing piston is less than the radius of second spiracle apart from the distance of the described second breathing axially bored line, and in institute
When stating breathing piston and being engaged with the blocking, the other end end face of the breathing piston is located at first spiracle and the
Be provided with gap between two spiracles or between the breathing piston and first spiracle, the respiration channel is provided with described the
It is connected between one end of one spring and first spiracle by the gap.
Further, the position limiting structure for being used for the spacing breathing piston, the position limiting structure are provided with the respiration channel
Positioned at first spiracle backwards to the side of second spiracle.
Further, the respiration channel includes big footpath section and path section, and the internal diameter of the big footpath section is more than the path section
Internal diameter, the breathing piston is arranged in the big footpath section, the position limiting structure be positioned at the big footpath section and path section it
Between limited step.
Further, the breathing piston is provided with head tank, the side of the head tank towards one end end face of the blocking
Wall, which is provided with to be provided between the port for being used for being connected with second spiracle, or the breathing piston and the blocking, to be used for
Connect the breach of second spiracle and the head tank.
Further, it is provided with sealing ring between the breathing piston and the respiration channel.
The invention also provides a kind of spring brake cylinder, including cylinder body and cylinder cap, piston, the cylinder are provided with the cylinder body
Valve body is provided between body and cylinder cap, the cylinder body is divided into brake spring chamber and parking chamber, the brake by the piston and valve body
For car spring chamber between the piston and the cylinder body, the parking chamber is described between the piston and the valve body
Driving chamber is formed between valve body and cylinder cap, the piston is provided with piston rod, and the piston rod is through the valve body and stretches into institute
State driving intracavitary, be provided with the communicating passage being connected with the brake spring chamber in the piston, on the piston with the row
Car chamber is correspondingly provided with internal respiration structure as described above, and first spiracle and the second spiracle are connected with the driving chamber
Logical, the one end of the respiration channel away from the blocking is connected with the communicating passage.
Further, the brake spring intracavitary be provided be used to applying the piston parallel to piston rod to power the
Two springs.
Further, y-type seal ring is provided between the valve body and the piston rod.
The beneficial effects of the present invention are：
The spring brake cylinder of the present invention, by setting internal respiration structure on the piston rod, when vehicle releases parking braking, brake
The unnecessary gas of spring cavity enters driving chamber by communicating passage and the first spiracle, is discharged into air；When carrying out parking braking,
Brake spring chamber need to carry out tonifying Qi, and the gas for chamber of driving a vehicle enters brake spring chamber by the first spiracle and communicating passage, ensure
The work well of piston；When the sealing structure failure between valve body and piston rod, the gas of parking intracavitary can enter row
Car intracavitary, piston movement cause the space of brake spring chamber to increase, and then cause pressure be present between brake spring chamber and driving chamber
Power is poor, and now, the compressed air for intracavitary of driving a vehicle is acted on breathing piston by the second spiracle, is exhaled using pressure differential driving
Attraction piston overcomes the elastic force of return spring to be moved to the first spiracle, breathing piston is blocked the first spiracle, prevents chamber of driving a vehicle
Compressed air enter brake spring chamber, make automobile normal running；
In summary, spring brake cylinder of the invention can prevent extraneous granule foreign from entering by setting internal respiration structure
Parking chamber, various environment can be applied to and improve service life, even if in the case where valve body sealing structure fails, can also
Ensure normal vehicle operation, reliability can be effectively improved.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the structural representation of the spring brake cylinder embodiment of the present invention；
Fig. 2 is the structural representation of internal respiration structure；
Fig. 3 is a kind of existing structural representation of spring brake cylinder.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be with
It is better understood from the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in figure 1, the structural representation of the spring brake cylinder embodiment for the present invention.The spring braking of the present embodiment
Cylinder, including cylinder body 4 and cylinder cap, cylinder body 4 is interior to be provided with piston 2, valve body 1 is provided between cylinder body 4 and cylinder cap, cylinder body 4 is by piston 2 and valve
Body 1 is divided into brake spring chamber A and parking chamber B, and for brake spring chamber A between piston 2 and cylinder body 4, parking chamber B is located at piston
Driving chamber C is formed between 2 and valve body 1, between valve body 1 and cylinder cap, piston 2 is provided with piston rod 6, and piston rod 6 passes through valve body 1 simultaneously
Stretch into driving chamber C, be provided with the communicating passage 11 being connected with brake spring chamber C in piston 2, it is corresponding with driving chamber C on piston 2
Provided with internal respiration structure.The internal respiration structure of the present embodiment, including respiration channel 12, the side wall of respiration channel 12 are provided with first
Spiracle a1 and the second spiracle a2, the axis direction of the first spiracle and the second spiracle along respiration channel 12 are set, this
The the first spiracle a1 and the second spiracle a2 of embodiment axis are located in two planes vertical with the axis of respiration channel；
One end of respiration channel 12, which is provided with, blocks 8, and the second spiracle a2 is located at the first spiracle a1 close to the side for blocking 8, and breathes
It is slidably matched in passage 12 with it provided with breathing piston 9, the other end of respiration channel 12, which is provided with, to be used to apply axle to breathing piston 9
To power and breathing piston 9 is set to be exhaled with blocking the first spring 7 being engaged, blocking 8 towards one end distance second of breathing piston 9
The distance of sucker a2 axis is less than the second spiracle a2 radius, and when breathing piston 9 and blocking 8 is engaged, breathing is lived
The other end end face of plug 9 is positioned at the first spiracle a1 and the second spiracle a2 between or breathing piston 9 and first spiracle
Gap is provided between a1, respiration channel 12 is provided between one end of the first spring 7 and the first spiracle a1 to be connected by gap.
Gap is provided between the breathing piston 9 of the present embodiment and the first spiracle a1.The breathing piston 9 of the present embodiment is logical with breathing
Sealing ring 10 is provided between road 12.It is provided with the brake spring chamber A of the present embodiment and is used to apply parallel to piston rod piston 2
To power second spring 5, y-type seal ring 3 is provided between valve body 1 and piston rod 6.
The first spiracle a1 and the second spiracle a2 of the present embodiment are connected with driving chamber C, and respiration channel 12 is away from stifled
One end of plug 8 is connected with communicating passage 11.The position limiting structure for being used for spacing breathing piston 9 is provided with respiration channel 12, it is spacing
Structure is located at the first spiracle a1 backwards to the second spiracle a2 side.The respiration channel 12 of the present embodiment includes big footpath section and small
Footpath section, the internal diameter of big footpath section are more than the internal diameter of path section, and breathing piston 9 is arranged in big footpath section, and the first spring 7 is arranged on path
In section, position limiting structure is the limited step between big footpath section and path section.
Further, the breathing piston 9 of the present embodiment is provided with head tank 13, head tank 13 towards one end end face for blocking 8
Side wall be provided with and be used for the port that is connected with the second spiracle a2, or breathing piston 9 and it is described block 8 between be provided with and be used for
Connect the second spiracle a2 and the head tank 13 breach, the blocking 8 of the present embodiment is towards one end end of breathing piston 9
Face is the conical surface, and the external diameter of the conical surface gradually increases along the axial direction for breathing piston sensing blocking 8, i.e., breathed by the conical surface
The breach for connecting the second spiracle a2 and the head tank 13 is formed between piston 9 and the blocking 8；In this way, row
Air in car chamber C can be entered in head tank 13 by the breach, apply pressure to breathing piston 9, and then drive breathing to live
The movement of plug 9.
The spring brake cylinder of the present embodiment, by setting internal respiration structure on the piston rod, when vehicle releases parking braking
When, the unnecessary gas of brake spring chamber enters driving chamber by communicating passage and the first spiracle, is discharged into air；When progress parking
During braking, brake spring chamber need to carry out tonifying Qi, and the gas for chamber of driving a vehicle enters brake spring by the first spiracle and communicating passage
Chamber, it ensure that the work well of piston；When the sealing structure failure between valve body and piston rod, the gas of parking intracavitary can enter
Entering to driving intracavitary, piston movement causes the space of brake spring chamber to increase, and then causes between brake spring chamber and driving chamber
Pressure differential be present, now, the compressed air for intracavitary of driving a vehicle is acted on breathing piston by the second spiracle, utilizes the pressure differential
The elastic force of driving breathing piston overpowers return spring moves to the first spiracle, breathing piston is blocked the first spiracle, prevents
The compressed air of driving chamber enters brake spring chamber, makes automobile normal running；In summary, the spring brake cylinder of the present embodiment leads to
Setting internal respiration structure is crossed, can prevent extraneous granule foreign from entering parking chamber, various environment can be applied to and improved to make
With the life-span, even if in the case where valve body sealing structure fails, it is also ensured that normal vehicle operation, can effectively improve reliable
Property.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
Enclose not limited to this.The equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (8)
- A kind of 1. internal respiration structure, it is characterised in that：Including respiration channel, the side wall of the respiration channel is provided with the first breathing Hole and the second spiracle, the axis direction of first spiracle and the second spiracle along the respiration channel are set；It is described One end of respiration channel, which is provided with, to be blocked, and second spiracle is located at first spiracle close to the side of the blocking, and It is slidably matched in the respiration channel with it provided with breathing piston, the other end of the respiration channel, which is provided with, to be used for the breathing Piston applies axial force and the breathing piston is blocked the first spring being engaged with described, and the blocking is exhaled towards described One end of attraction piston is less than the radius of second spiracle apart from the distance of the described second breathing axially bored line, and in the breathing When piston is engaged with the blocking, the other end end face of the breathing piston is located at first spiracle and the second breathing Gap is provided between hole or between the breathing piston and first spiracle, the respiration channel is provided with first spring One end and first spiracle between be connected by the gap.
- 2. internal respiration structure according to claim 1, it is characterised in that：It is provided with the respiration channel for spacing described The position limiting structure of piston is breathed, the position limiting structure is located at first spiracle backwards to the side of second spiracle.
- 3. internal respiration structure according to claim 2, it is characterised in that：The respiration channel includes big footpath section and path Section, the internal diameter of the big footpath section are more than the internal diameter of the path section, and the breathing piston is arranged in the big footpath section, the limit Bit architecture is the limited step between the big footpath section and path section.
- 4. internal respiration structure according to claim 1, it is characterised in that：The piston that breathes is towards one end of the blocking End face is provided with head tank, and the side wall of the head tank is provided with the port for being used for being connected with second spiracle, or institute State to be provided between breathing piston and the blocking and be used to connect second spiracle and the breach of the head tank.
- 5. internal respiration structure according to claim 1, it is characterised in that：Between the breathing piston and the respiration channel Provided with sealing ring.
- 6. a kind of spring brake cylinder, including cylinder body and cylinder cap, the cylinder body is interior to be provided with piston, is provided between the cylinder body and cylinder cap Valve body, the cylinder body are divided into brake spring chamber and parking chamber by the piston and valve body, and the brake spring chamber is positioned at described Between piston and the cylinder body, the parking chamber is between the piston and the valve body, shape between the valve body and cylinder cap Into driving chamber, the piston is provided with piston rod, and the piston rod is through the valve body and stretches into the driving intracavitary, its feature It is：Be provided with the communicating passage being connected with the brake spring chamber in the piston, on the piston with the driving chamber pair The internal respiration structure as described in claim any one of 1-5, first spiracle and the second spiracle and the row should be provided with Car chamber is connected, and the one end of the respiration channel away from the blocking is connected with the communicating passage.
- 7. spring brake cylinder according to claim 6, it is characterised in that：The brake spring intracavitary, which is provided with, to be used for described Piston apply parallel to piston rod to power second spring.
- 8. spring brake cylinder according to claim 6, it is characterised in that：Y is provided between the valve body and the piston rod Type sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111557.2A CN107719351A (en) | 2017-11-13 | 2017-11-13 | Spring brake cylinder and internal respiration structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711111557.2A CN107719351A (en) | 2017-11-13 | 2017-11-13 | Spring brake cylinder and internal respiration structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107719351A true CN107719351A (en) | 2018-02-23 |
Family
ID=61215230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711111557.2A Pending CN107719351A (en) | 2017-11-13 | 2017-11-13 | Spring brake cylinder and internal respiration structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107719351A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2407627A (en) * | 2003-10-29 | 2005-05-04 | Haldex Brake Corp | Internal breathing valve in a spring brake actuator |
| CN102410320A (en) * | 2011-08-15 | 2012-04-11 | 瑞立集团瑞安汽车零部件有限公司 | Spring brake chamber capable of preventing braking force superposition |
| CN102454731A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Fully-sealed piston type spring braking cylinder assembly |
| CN102840256A (en) * | 2012-07-27 | 2012-12-26 | 浙江万安科技股份有限公司 | Spring braking cylinder internal respiration structure |
| EP2711258A1 (en) * | 2012-09-24 | 2014-03-26 | Kancioglu Otomotiv Sanayi Ve Ticaret Anonim Sirketi | Internal breathing system for spring brake actuator type diaphragm-piston |
| CN103758901A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle |
| CN207389177U (en) * | 2017-11-13 | 2018-05-22 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
-
2017
- 2017-11-13 CN CN201711111557.2A patent/CN107719351A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2407627A (en) * | 2003-10-29 | 2005-05-04 | Haldex Brake Corp | Internal breathing valve in a spring brake actuator |
| CN102454731A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Fully-sealed piston type spring braking cylinder assembly |
| CN102410320A (en) * | 2011-08-15 | 2012-04-11 | 瑞立集团瑞安汽车零部件有限公司 | Spring brake chamber capable of preventing braking force superposition |
| CN102840256A (en) * | 2012-07-27 | 2012-12-26 | 浙江万安科技股份有限公司 | Spring braking cylinder internal respiration structure |
| EP2711258A1 (en) * | 2012-09-24 | 2014-03-26 | Kancioglu Otomotiv Sanayi Ve Ticaret Anonim Sirketi | Internal breathing system for spring brake actuator type diaphragm-piston |
| CN103758901A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Internal respiration structure of diaphragm type spring braking air chamber of brake system of commercial vehicle |
| CN207389177U (en) * | 2017-11-13 | 2018-05-22 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
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