CN207609706U - Internal breathing spring braking air chamber - Google Patents
Internal breathing spring braking air chamber Download PDFInfo
- Publication number
- CN207609706U CN207609706U CN201721640650.8U CN201721640650U CN207609706U CN 207609706 U CN207609706 U CN 207609706U CN 201721640650 U CN201721640650 U CN 201721640650U CN 207609706 U CN207609706 U CN 207609706U
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- China
- Prior art keywords
- piston
- spring
- air chamber
- cylinder body
- piston tube
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Abstract
The utility model discloses a kind of internal breathing spring braking air chambers, it includes cylinder body, piston, piston tube and middle body, and the outer circle of the piston and the inner wall of cylinder body are tightly connected by y-shaped ring；Piston tube, the piston tube are arranged in the endoporus of piston, and the piston tube includes valve seat, check valve, spring and stomata, have radial clearance between the check valve outer circle and valve seat and are connected by spring, the stomata is arranged on the side wall of piston tube；The middle body seals shape circle by preceding O-ring seals and rear O shapes with piston tube and is tightly connected, and when piston motion to cylinder body bottommost, the stomata in piston tube is between preceding O-ring seals and rear O-ring seals.The utility model provides a kind of internal breathing spring braking air chamber, its good airproof performance is not easy to be contaminated, stable and reliable operation, service life are long.
Description
Technical field
The utility model is related to a kind of internal breathing spring braking air chambers, belong to automobile braking device field.
Background technology
Currently, in the prior art, as shown in Figure 1, spring brake chamber is equipped with tube socket 3 in 10 bottom of cylinder body, in end cap
Also is provided with a tube socket 3 on 14, connected with nylon tube 9 between two tube sockets 3, end cap 14 be provided with ventilation hole G directly with big gas phase
It is logical.When parking braking, back cavity C exhausts, piston 11 moves right under the action of energy-stored spring 8, and post-compensation chamber D increases due to volume
It is big to generate sucking pump effect, the sundries such as dust, silt are easily sucked by ventilation hole G, precompensation chamber A and nylon tube 9, and damage cylinder
10 inner surface of body and energy-stored spring 8 and y-shaped ring 12, can reduce the service life of parking braking part, and nylon tube 9 exists
Be easy to collide with and be broken or fall off in vehicle travel process, the sundries such as dust, silt easily by the stomata on cylinder body 10 directly into
Enter post-compensation chamber D, working environment in cylinder body 10 is caused significantly to deteriorate, will produce 10 inner surface scratch wound plucking of cylinder body, energy-stored spring 8
Phenomena such as rust corrosion, 12 damage gas leakage of Y shape circle sealing, to make parking braking premature failure.
Invention content
Technical problem to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of internal respiration spring
Brake chamber, its good airproof performance is not easy to be contaminated, stable and reliable operation, service life are long.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of internal breathing spring braking air chamber, it includes：
Cylinder body；
Piston, the outer circle of the piston and the inner wall of cylinder body are tightly connected by y-shaped ring；
Piston tube, the piston tube are arranged in the endoporus of piston, the piston tube include valve seat, check valve, spring and
Stomata has radial clearance and is connected by spring between the check valve outer circle and valve seat, the stomata is arranged in piston tube
Side wall on；
Middle body, the middle body seal shape circle by preceding O-ring seals and rear O shapes with piston tube and are tightly connected, when piston is transported
When moving to cylinder body bottommost, the stomata in piston tube is between preceding O-ring seals and rear O-ring seals.
Further, cylinder body is separated into back cavity and post-compensation chamber by the piston.
Further, the preceding air admission hole communicated with ante-chamber is provided on the middle body.
Further, the rear air admission hole communicated with back cavity is also provided on the middle body.
Further, the internal breathing spring braking air chamber further includes end cap, and the end cap is connect by middle body with cylinder body, institute
Cylinder body is stated to be tightly connected by sealing ring with middle body.
Further, diaphragm, push-plate and return spring are provided in the end cap, the side of the push-plate passes through return spring
It connect with end cap inside, is in contact with the other side of push-plate on the outside of the end face of the diaphragm, it is on the inside of the end face of the diaphragm and living
Plug pipe is connected.
Further, the diaphragm constitutes precompensation chamber with end cap.
Further, the diaphragm constitutes ante-chamber with middle body.
Further, the distance of the preceding O-ring seals to ante-chamber is less than rear O-ring seals to the distance of ante-chamber.
Further, the internal breathing spring braking air chamber further includes energy-stored spring, one end of the energy-stored spring and piston
End connection, the bottom of the other end of the energy-stored spring and cylinder body connects.
Above-mentioned technical proposal is used, the utility model is equipped with preceding O-ring seals and rear O-ring seals on middle body, both
It can guarantee the sealing of ante-chamber and back cavity to post-compensation chamber, and can guarantee that additional air can be drained by ante-chamber in post-compensation chamber, also
It can prevent to enter check valve by the stomata in piston tube when the compressed air for be filled with when service brake ante-chamber, reduce unidirectional
The movement frequency of valve, and then the possibility of failure of check valve is reduced, it more ensure that the brake safe performance of vehicle；This practicality is new
After the breathing structures such as check valve are arranged in piston tube in type, post-compensation chamber gas is made to pass through check valve inspiration and discharge, it is no longer logical
The ventilation hole crossed on end cap carries out, and improves the cleannes of spring brake chamber post-compensation chamber, improves entire spring braking
The service life of gas chamber.The utility model is compact-sized, work efficiency is high, service life is long, stable and reliable operation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is structural schematic diagram of the utility model internal breathing spring braking air chamber in parking braking state；
Fig. 3 is the portions the J enlarged diagram of Fig. 2；
Fig. 4 is structural schematic diagram of the utility model internal breathing spring braking air chamber when releasing parking braking state；
Fig. 5 is the portions the K enlarged diagram of Fig. 4.
Wherein, 1, return spring, 2, push-plate component, 3, tube socket, 4, diaphragm, 5, middle body, 6, sealing ring, 7-1, preceding O shapes are close
Seal, 7-2, rear O-ring seals, 8, energy-stored spring, 9, nylon tube, 10, cylinder body, 11, piston, 12, y-shaped ring, 13, piston
Pipe, 14, end cap, 15, check valve, 16, valve seat, 17, spring, A, precompensation chamber, B, ante-chamber, C, back cavity, D, post-compensation chamber are E, preceding
Air admission hole, F, rear air admission hole, G, ventilation hole, H, stomata.
Specific implementation mode
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model.
As shown in Figure 2-5, a kind of internal breathing spring braking air chamber, it includes：
Cylinder body 10；
Piston 11, the outer circle of the piston 11 are tightly connected with the inner wall of cylinder body 10 by y-shaped ring 12；
Piston tube 13, the piston tube 13 are arranged in the endoporus of piston 11, and the piston tube 13 includes valve seat 16, unidirectional
Valve 15, spring 17 and stomata H have radial clearance and are connected by spring 17 between 15 outer circle of the check valve and valve seat 16,
The stomata H is arranged on the side wall of piston tube 13, and the piston tube 13 can improve the building ring of parking braking chamber piston 11
The inner surface of cylinder body 10 is protected in border；
Middle body 5, the middle body 5 seal the 7-2 sealings of shape circle by preceding O-ring seals 7-1 and rear O shapes with piston tube 13 and connect
It connects, when piston 11 moves to 10 bottommost of cylinder body, the stomata H in piston tube 13 is located at preceding O-ring seals 7-1 and rear O shapes are close
Between seal 7-2, the preceding O-ring seals 7-1 and rear O shapes sealing shape circle 7-2 can enhance leakproofness and by additional air
It is thoroughly drained by ante-chamber B, moreover it is possible to prevent to pass through in piston tube 13 when the compressed air for be filled with when service brake ante-chamber B
Stomata H enters check valve 15.
As shown in Figure 2,4, cylinder body 10 is separated into back cavity C and post-compensation chamber D by the piston 11.
As shown in Figure 2,4, the preceding air admission hole E communicated with ante-chamber B is provided on the middle body 5.
As shown in Figure 2,4, the rear air admission hole F communicated with back cavity C is also provided on the middle body 5.
As shown in Figure 2,4, the internal breathing spring braking air chamber further includes end cap 14, the end cap 14 by middle body 5 with
Cylinder body 10 connects, and the cylinder body 10 is tightly connected with middle body 5 by sealing ring 6.
As shown in Figure 2,4, diaphragm 4, push-plate 2 and return spring 1, the side of the push-plate 2 are provided in the end cap 14
It is connect with 14 inside of end cap by return spring 1, is in contact with the other side of push-plate 2 on the outside of the end face of the diaphragm 4, the film
It is connected with piston tube 13 on the inside of the end face of piece 4.
As shown in Figure 2,4, the diaphragm 4 constitutes precompensation chamber A with end cap 14.
As shown in Figure 2,4, the diaphragm 4 constitutes ante-chamber B with middle body 5.
As shown in Figure 2,4, the distance of the preceding O-ring seals 7-1 to ante-chamber B is less than rear O-ring seals 7-2 to ante-chamber B
Distance.
As shown in Figure 2,4, the internal breathing spring braking air chamber further includes energy-stored spring 8, one end of the energy-stored spring 8
It is connect with the end of piston 11, the other end of the energy-stored spring 8 is connect with the bottom of cylinder body 10.
The operation principle of the utility model is as follows：
When vehicle releases parking braking, compressed air enters back cavity C, 11 compressed energy-storage bullet of piston by rear air admission hole F
Spring 8 moves downward, and post-compensation chamber D volumes reduce, and extra gas is by piston tube 13, through valve seat 16, check valve 15, piston tube
Stomata H, ante-chamber B, preceding air admission hole E on 13 are discharged into air.
When carrying out parking braking, back cavity C dies, and energy-stored spring 8 discharges, and pushes piston 11 to move right, post-compensation chamber D
Volume increases, and forms negative pressure, generates inspiratory phenomenon, the gas of inspiration enters from the preceding air admission hole E of ante-chamber B, by piston tube 13
On stomata H, flow through gap between check valve 15 and valve seat 16, most enter post-compensation chamber D through piston tube 13 afterwards, ensure piston
11 work well.Because sucking gas comes from brake piping, the filtering through brake piping valve class braking member, it is therefore prevented that silt etc.
Sundries is mixed into post-compensation air cavity D, significantly improves the working environment of parking braking chamber piston 11, protects table in cylinder body 10
Face makes the Y shape circle 12 on piston 11 obtain long-term adequately lubrication, to ensure that the task performance of spring brake chamber, into
One step improves its service life.
Set on middle body 5 there are two i.e. preceding the O-ring seals 7-1 of sealing ring and rear O-ring seals 7-2, both can guarantee ante-chamber B with
Sealings of the back cavity C to post-compensation chamber D, and can guarantee that additional air can be drained by ante-chamber B in post-compensation chamber D, moreover it is possible to prevention is worked as
The compressed air that ante-chamber B need to be carried out being filled with when service brake enters check valve 15 by the stomata H in piston tube 13, reduces unidirectional
The movement frequency of valve 15, and then the possibility that check valve 15 fails is reduced, it more ensure that the brake safe performance of vehicle.
Spring 17 is equipped between check valve 15 and valve seat 16, one of them in current O-ring 7-1 and rear O-ring 7-2 occurs
When damage, air enters check valve 15 by the stomata H in piston tube 13, and gas pressure is on check valve 15,15 grams of check valve
The drag for taking spring 17 closes valve, prevents compressed air from entering post-compensation chamber D and destroys braking, to make vehicle traveling more pacify
Entirely.
Particular embodiments described above, the technical issues of the utility model is solved, technical solution and advantageous effect into
It has gone further description, it should be understood that the foregoing is merely specific embodiment of the utility model, and has not had to
In limitation the utility model, within the spirit and principle of the utility model, any modification, equivalent substitution and improvements done
Deng should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of internal breathing spring braking air chamber, which is characterized in that it includes：
Cylinder body (10)；
Piston (11), the outer circle of the piston (11) are tightly connected with the inner wall of cylinder body (10) by y-shaped ring (12)；
Piston tube (13), the piston tube (13) are arranged in the endoporus of piston (11), and the piston tube (13) includes valve seat
(16), check valve (15), spring (17) and stomata (H), between radial direction between check valve (15) outer circle and valve seat (16)
Gap is simultaneously connected by spring (17), and the stomata (H) is arranged on the side wall of piston tube (13)；
Middle body (5), the middle body (5) are sealed with piston tube (13) by preceding O-ring seals (7-1) and rear O-ring seals (7-2)
Connection, when piston (11) moves to cylinder body (10) bottommost, the stomata (H) in piston tube (13) is located at preceding O-ring seals (7-
1) between rear O-ring seals (7-2).
2. internal breathing spring braking air chamber according to claim 1, it is characterised in that：The piston (11) is by cylinder body (10)
It is separated into back cavity (C) and post-compensation chamber (D).
3. internal breathing spring braking air chamber according to claim 1, it is characterised in that：It is provided on the middle body (5) with before
The preceding air admission hole (E) that chamber (B) communicates.
4. internal breathing spring braking air chamber according to claim 1, it is characterised in that：Also is provided on the middle body (5) with
The rear air admission hole (F) that back cavity (C) communicates.
5. internal breathing spring braking air chamber according to claim 1, it is characterised in that：Further include end cap (14), the end
Lid (14) is connect by middle body (5) with cylinder body (10), and the cylinder body (10) is tightly connected with middle body (5) by sealing ring (6).
6. internal breathing spring braking air chamber according to claim 5, it is characterised in that：It is provided with film in the end cap (14)
Piece (4), push-plate (2) and return spring (1), the side of the push-plate (2) on the inside of return spring (1) and end cap (14) by connecting
It connects, is in contact with the other side of push-plate (2) on the outside of the end face of the diaphragm (4), the end face inside of the diaphragm (4) and piston tube
(13) it is connected.
7. internal breathing spring braking air chamber according to claim 6, it is characterised in that：The diaphragm (4) and end cap (14)
Constitute precompensation chamber (A).
8. internal breathing spring braking air chamber according to claim 6, it is characterised in that：The diaphragm (4) and middle body (5) structure
At ante-chamber (B).
9. internal breathing spring braking air chamber according to claim 8, it is characterised in that：The preceding O-ring seals (7-1) are extremely
The distance of ante-chamber (B) is less than rear O-ring seals (7-2) to the distance of ante-chamber (B).
10. internal breathing spring braking air chamber according to claim 1, it is characterised in that：Further include energy-stored spring (8), institute
The one end for stating energy-stored spring (8) is connect with the end of piston (11), the bottom of the other end and cylinder body (10) of the energy-stored spring (8)
Portion connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640650.8U CN207609706U (en) | 2017-11-30 | 2017-11-30 | Internal breathing spring braking air chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721640650.8U CN207609706U (en) | 2017-11-30 | 2017-11-30 | Internal breathing spring braking air chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207609706U true CN207609706U (en) | 2018-07-13 |
Family
ID=62796102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721640650.8U Expired - Fee Related CN207609706U (en) | 2017-11-30 | 2017-11-30 | Internal breathing spring braking air chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207609706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706626A (en) * | 2020-07-24 | 2020-09-25 | 中车株洲电力机车有限公司 | Breathing dust protector for brake |
-
2017
- 2017-11-30 CN CN201721640650.8U patent/CN207609706U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706626A (en) * | 2020-07-24 | 2020-09-25 | 中车株洲电力机车有限公司 | Breathing dust protector for brake |
| CN111706626B (en) * | 2020-07-24 | 2021-11-16 | 中车株洲电力机车有限公司 | Breathing dust protector for brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20201130 |