CN207389177U - Spring brake cylinder and internal respiration structure - Google Patents
Spring brake cylinder and internal respiration structure Download PDFInfo
- Publication number
- CN207389177U CN207389177U CN201721500993.4U CN201721500993U CN207389177U CN 207389177 U CN207389177 U CN 207389177U CN 201721500993 U CN201721500993 U CN 201721500993U CN 207389177 U CN207389177 U CN 207389177U
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- piston
- spiracle
- breathing
- respiration
- spring
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Abstract
The utility model discloses a kind of internal respiration structures, it is characterised in that：Including respiration channel, the side wall of respiration channel is equipped with the first spiracle and the second spiracle, and the first spiracle and the second spiracle are set along the axis direction of respiration channel；One end of respiration channel, which is equipped with, to be blocked, second spiracle is located at the first spiracle close to the one side blocked, and it is slidably matched in respiration channel with it equipped with breathing piston, the other end of respiration channel is equipped with 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, it breathes the other end face of piston and is equipped with gap between the first spiracle and the second spiracle or between the breathing piston and the first spiracle, respiration channel is equipped between one end of the first spring and the first spiracle to be connected by the gap.
Description
Technical field
The utility model belongs to vehicle braking and its component technology field, is specifically a kind of spring brake cylinder and internal respiration
Structure.
Background technology
It is made 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 be easy to causeing 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
It in view of this, can be effective the purpose of this utility model is to provide a kind of spring brake cylinder and internal respiration structure
Improve product service life and environmental suitability.
In order to achieve the above objectives, the utility model provides following technical solution：
The utility model first proposed a kind of internal respiration structure, including respiration channel, on the side wall of the respiration channel
Equipped with the first spiracle and the second spiracle, the axis side of first spiracle and the second spiracle along the respiration channel
To setting；One end of the respiration channel, which is equipped with, to be blocked, and second spiracle is located at first spiracle close to described stifled
The one side of plug, and be slidably matched in the respiration channel with it equipped with breathing piston, the other end of the respiration channel, which is equipped with, to be used
It is described stifled in the first spring for applying axial force to the breathing piston and the breathing piston being made to be engaged with the blocking
The radius that the distance towards one end of the breathing piston apart from the described second breathing axially bored line is less than second spiracle is filled in,
And when the breathing piston is engaged with the blocking, the other end face of the breathing piston is located at the described first breathing
Gap is equipped between hole and the second spiracle or between the breathing piston and first spiracle, the respiration channel is equipped with
It is connected between one end of first spring and first spiracle by the gap.
Further, it is equipped with to breathe the position limiting structure of piston, the position limiting structure described in /V in the respiration channel
Positioned at first spiracle backwards to the one side of second spiracle.
Further, the respiration channel includes major diameter section and path section, and the internal diameter of the major diameter section is more than the path section
Internal diameter, the breathing piston is mounted in the major diameter section, the position limiting structure be positioned at the major diameter section and path section it
Between limited step.
Further, the breathing piston is equipped with head tank, the side of the head tank towards one end end face of the blocking
Wall is equipped with to be equipped between the port being connected with second spiracle or the breathing piston and the blocking and be used for
Connect the notch of second spiracle and the head tank.
Further, it is equipped with sealing ring between the breathing piston and the respiration channel.
The utility model also proposed a kind of spring brake cylinder, and including cylinder body and cylinder cap, piston, institute are equipped in the cylinder body
It states and valve body is equipped between cylinder body and cylinder cap, the cylinder body is divided into brake spring chamber and parking chamber, institute by the piston and valve body
Brake spring chamber is stated between the piston and the cylinder body, the parking chamber between the piston and the valve body,
Driving chamber is formed between the valve body and cylinder cap, the piston is equipped with piston rod, and the piston rod is through the valve body and stretches
Enter the driving intracavitary, be equipped with the communicating passage being connected with the brake spring chamber in the piston, on the piston with institute
It states driving chamber and is correspondingly provided with internal respiration structure as described above, first spiracle and the second spiracle and the driving chamber phase
Connection, the one end of the respiration channel away from the blocking is connected with the communicating passage.
Further, the brake spring intracavitary be equipped with to apply the piston parallel to piston rod to power the
Two springs.
Further, y-type seal ring is equipped between the valve body and the piston rod.
The beneficial effects of the utility model are：
The spring brake cylinder of the utility model, by setting internal respiration structure on the piston rod, when vehicle releases parking system
When dynamic, the extra gas of brake spring chamber enters driving chamber by communicating passage and the first spiracle, is discharged into air；When being stayed
When vehicle is braked, brake spring chamber need to carry out tonifying Qi, and the gas for chamber of driving a vehicle enters brake bullet by the first spiracle and communicating passage
Spring chamber ensure that the work well of piston；When the sealing structure failure between valve body and piston rod, the gas meeting of parking intracavitary
Enter driving intracavitary, piston motion causes the space of brake spring chamber to increase, and then cause brake spring chamber with driving chamber it
Between there are pressure differential, at this point, the compressed air of driving intracavitary is acted on by the second spiracle and breathed on piston, utilize the pressure
The elastic force of difference driving breathing piston overpowers return spring is moved to the first spiracle, and breathing piston is made to block the first spiracle, is prevented
Only the compressed air of driving chamber enters brake spring chamber, makes automobile normal running；
In summary, the spring brake cylinder of the utility model can prevent that outer boundry particle is miscellaneous by setting internal respiration structure
Matter enters parking chamber, can be suitable for various environment and improve service life, even if in the situation of valve body sealing structure failure
Under, it is also ensured that normal vehicle operation can effectively improve reliability.
Description of the drawings
In order to make the purpose of this utility model, technical solution and advantageous effect clearer, the utility model provides as follows
Attached drawing illustrates：
Fig. 1 is the structure diagram of the spring brake cylinder embodiment of the utility model；
Fig. 2 is the structure diagram of internal respiration structure；
Fig. 3 is a kind of existing structure diagram of spring brake cylinder.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
It can be better understood from the utility model and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
As shown in Figure 1, the structure diagram of the spring brake cylinder embodiment for the utility model.The spring system of the present embodiment
Dynamic cylinder including cylinder body 4 and cylinder cap, is equipped with piston 2 in cylinder body 4, valve body 1 is equipped between cylinder body 4 and cylinder cap, cylinder body 4 is by 2 He of piston
Valve body 1 is divided into brake spring chamber A and parking chamber B, and between piston 2 and cylinder body 4, parking chamber B is located to live brake spring chamber A
Driving chamber C is formed between plug 2 and valve body 1, between valve body 1 and cylinder cap, piston 2 is equipped with piston rod 6, and piston rod 6 passes through valve body 1
And stretch into driving chamber C, be equipped with the communicating passage 11 being connected with brake spring chamber C in piston 2, on piston 2 with C pairs of chamber of driving a vehicle
Internal respiration structure should be equipped with.The internal respiration structure of the present embodiment, including respiration channel 12, the side wall of respiration channel 12 is equipped with the
One spiracle a1 and the second spiracle a2, the first spiracle and the second spiracle are set along the axis direction of respiration channel 12,
The axis of the first spiracle a1 and the second spiracle a2 of the present embodiment are located at two planes vertical with the axis of respiration channel
On；One end of respiration channel 12, which is equipped with, blocks 8, and the second spiracle a2 is located at the first spiracle a1 close to the one side of blocking 8, and exhales
It inhales in passage 12 and is slidably matched with it equipped with breathing piston 9, the other end of respiration channel 12 is equipped with to apply breathing piston 9
Axial force simultaneously makes breathing piston 9 and blocks the first spring 7 being engaged, and blocks 8 towards one end distance second for breathing piston 9
The distance of spiracle a2 axis is less than the radius of the second spiracle a2, and when breathing piston 9 and blocking 8 is engaged, breathing
The other end face of piston 9 is between the first spiracle a1 and the second spiracle a2 or breathing piston 9 is breathed with described first
Gap is equipped between the a1 of hole, respiration channel 12 is equipped between one end of the first spring 7 and the first spiracle a1 to be connected by gap
It is logical.Gap is equipped between the breathing piston 9 of the present embodiment and the first spiracle a1.The breathing piston 9 of the present embodiment is with exhaling
Sealing ring 10 is equipped between suction passage 12.It is equipped with to apply parallel to piston piston 2 in the brake spring chamber A of the present embodiment
The second spring 5 of the power of bar axial direction is equipped with y-type seal ring 3 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.It is equipped in respiration channel 12 for the position limiting structure of /V breathing piston 9, /V
Structure is located at the first spiracle a1 backwards to the one side of the second spiracle a2.The respiration channel 12 of the present embodiment includes major diameter section and small
Footpath section, the internal diameter of major diameter section are more than the internal diameter of path section, and breathing piston 9 is mounted in major diameter section, and the first spring 7 is mounted on path
In section, position limiting structure is the limited step between major diameter section and path section.
Further, the breathing piston 9 of the present embodiment is equipped with head tank 13, head tank 13 towards one end end face for blocking 8
Side wall be equipped with for the port that is connected with the second spiracle a2 or breathing piston 9 and it is described block 8 between be equipped with and be used for
Connect the notch of the second spiracle a2 and the head tank 13, the blocking 8 of the present embodiment is towards one end end of breathing piston 9
Face is the conical surface, and the outer diameter of the conical surface gradually increases along the axial direction of breathing piston direction blocking 8, i.e., breathed by the conical surface
Piston 9 forms the notch for connecting the second spiracle a2 and the head tank 13 with described block between 8；In this way, row
Air in vehicle chamber C can be entered in head tank 13 by the notch, apply pressure to breathing piston 9, and then breathing is driven to live
9 movement of plug.
The spring brake cylinder of the present embodiment, by setting internal respiration structure on the piston rod, when vehicle releases parking braking
When, the extra 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 ensure that the work well of piston；When the sealing structure failure between valve body and piston rod, the gas of parking intracavitary can be into
Enter to driving intracavitary, piston motion causes the space of brake spring chamber to increase, and then causes between brake spring chamber and driving chamber
There are pressure differentials, at this point, the compressed air of driving intracavitary is acted on by the second spiracle on breathing piston, utilize the pressure differential
The elastic force of driving breathing piston overpowers return spring is moved to the first spiracle, and breathing piston is made to block the first spiracle, is prevented
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 suitable for and improved to make
With the service life, 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 the preferred embodiment to absolutely prove the utility model and being lifted, the utility model
Protection domain it is without being limited thereto.The equivalent substitute or change that those skilled in the art are made on the basis of the utility model
It changes, within the scope of protection of the utility model.The scope of protection of the utility model is subject to claims.
Claims (8)
1. a kind of internal respiration structure, it is characterised in that：Including respiration channel, the side wall of the respiration channel is equipped with the first breathing
Hole and the second spiracle, first spiracle and the second spiracle are set along the axis direction of the respiration channel；It is described
One end of respiration channel, which is equipped with, to be blocked, and second spiracle is located at first spiracle close to the one side of the blocking, and
It is slidably matched in the respiration channel with it equipped with breathing piston, the other end of the respiration channel is equipped with for the breathing
Piston applies axial force and the breathing piston is made to block the first spring being engaged with described, and the blocking is exhaled towards described
Distance of the one end of attraction piston apart from the described second breathing axially bored line is less than the radius of second spiracle, and in the breathing
When piston is engaged with the blocking, the other end face of the breathing piston is located at first spiracle and the second breathing
Gap is equipped between hole or between the breathing piston and first spiracle, the respiration channel is equipped 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 equipped in the respiration channel for described in /V
The position limiting structure of piston is breathed, the position limiting structure is located at first spiracle backwards to the one side of second spiracle.
3. internal respiration structure according to claim 2, it is characterised in that：The respiration channel includes major diameter section and path
Section, the internal diameter of the major diameter section are more than the internal diameter of the path section, and the breathing piston is mounted in the major diameter section, the limit
Bit architecture is the limited step between the major diameter 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 equipped with head tank, and the side wall of the head tank is equipped with for the port being connected with second spiracle or institute
It states and the notch for connecting second spiracle and the head tank is equipped between breathing piston and the blocking.
5. internal respiration structure according to claim 1, it is characterised in that：Between the breathing piston and the respiration channel
Equipped with sealing ring.
6. a kind of spring brake cylinder including cylinder body and cylinder cap, is equipped with piston, is equipped between the cylinder body and cylinder cap in the cylinder body
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 located 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 equipped with piston rod, and the piston rod is through the valve body and stretches into the driving intracavitary, feature
It is：Be equipped with the communicating passage being connected with the brake spring chamber in the piston, on the piston with the driving chamber pair
It should be equipped with such as claim 1-5 any one of them internal respiration structures, first spiracle and the second spiracle and the row
Vehicle 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 is equipped with 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 equipped between the valve body and the piston rod
Type sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721500993.4U CN207389177U (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 |
|---|---|---|---|
| CN201721500993.4U CN207389177U (en) | 2017-11-13 | 2017-11-13 | Spring brake cylinder and internal respiration structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207389177U true CN207389177U (en) | 2018-05-22 |
Family
ID=62326105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721500993.4U Active CN207389177U (en) | 2017-11-13 | 2017-11-13 | Spring brake cylinder and internal respiration structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207389177U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107719351A (en) * | 2017-11-13 | 2018-02-23 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
| CN114439869A (en) * | 2022-04-07 | 2022-05-06 | 江苏恒鑫正宏科技有限公司 | Spring brake chamber with clearance change self-adjusting sealing function |
-
2017
- 2017-11-13 CN CN201721500993.4U patent/CN207389177U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107719351A (en) * | 2017-11-13 | 2018-02-23 | 浙江万安科技股份有限公司 | Spring brake cylinder and internal respiration structure |
| CN114439869A (en) * | 2022-04-07 | 2022-05-06 | 江苏恒鑫正宏科技有限公司 | Spring brake chamber with clearance change self-adjusting sealing function |
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