CN104477159A - Combined brake valve with automatic pressure switch - Google Patents
Combined brake valve with automatic pressure switch Download PDFInfo
- Publication number
- CN104477159A CN104477159A CN201410715659.5A CN201410715659A CN104477159A CN 104477159 A CN104477159 A CN 104477159A CN 201410715659 A CN201410715659 A CN 201410715659A CN 104477159 A CN104477159 A CN 104477159A
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- Prior art keywords
- air
- valve
- chamber
- joint
- brake
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Classifications
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- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/36—Other control devices or valves characterised by definite functions
- B60T15/42—Other control devices or valves characterised by definite functions with a quick braking action, i.e. with accelerating valves actuated by brake-pipe pressure variation
Abstract
The invention discloses a combined brake valve with an automatic pressure switch. The combined brake valve comprises a valve body, a brake piston, an air valve and the automatic pressure switch, the air valve is used for controlling the communication state of a brake air channel, the brake piston can vertically move in a valve cavity of the valve body and is used for providing starting power for the air valve, a driving chamber for providing driving air pressure is formed above the brake piston, a buffer chamber is formed below the brake piston, and the automatic pressure switch is connected with the buffer chamber. When inputted air pressure is low, inputted compressed air is conveyed into the buffer chamber by the automatic pressure switch to counteract part of lower push force for driving the indoor driving air pressure for the brake piston. When the inputted air pressure is high, the air in the buffer chamber is discharged by the automatic pressure switch. The brake air pressure and releasing speed can be adjusted as needed by the added automatic pressure switch, tires cannot be locked when no-load brake is performed, rapidness and effectiveness are ensured when load brake is performed, running safety of vehicles is greatly improved, and braking damage to the tires is reduced.
Description
Technical field
The present invention relates to vehicle brake technology field, particularly relate to a kind of brake activation valve be applied in heavy-duty vehicle brake system.
Background technology
Brake system is the most important parts ensureing vehicle safe driving, but there is a lot of drawback in the existing lorry gas braking system that especially high capacity waggon adopts, when empty wagons is braked, braking strength can meet, but the overall inertia of loading rear vehicle is large, the braking force that common brake activation valve provides is difficult to meet brake request, the usual large brake activation valve of braking strength of need changing can reach loaded vehicle braking effect, and the large brake system of this free air capacity is when vehicle zero load braking, a pedal tire is just by locking gently, tire drags to be scrapped very soon owing to towing, also certain injury is caused to wheel hub simultaneously, add sizable maintenance cost.And when travelling when sleety weather road surface slippery situation, easily occur stopping inclined whipping and causing safety misadventure.Therefore, there is provided a kind of good braking effect, can come adjustable brake atmospheric pressure and release rate as required, when both having ensured unloaded braking, tire can not locking, again can be effective rapidly when load-carrying is braked, be significant to improve the braking scheme of vehicle driving safety.
Summary of the invention
For overcoming above-mentioned technical matters, the invention provides a kind of structure simple, implement easily, when both can ensure that zero load is braked, tire can not by locking, effective rapidly when can ensure that load-carrying is braked again, the pressure automatic switch compound type brake activation valve of vehicle safety can be improved.
For realizing above-mentioned technical purpose, the present invention adopts following technical proposals: a kind of pressure automatic switch compound type brake activation valve, and it comprises:
The brake activation valve be made up of valve body, brake piston and air valve, air valve is in order to control the connected state of braking gas circuit, and brake piston can move up and down in the valve pocket of valve body, for turning on the power for air valve provides, the top of brake piston is for providing the drive chamber driving air pressure, and below is surge chamber;
And pressure automatic switch, it is connected with surge chamber, and when input air pressure is lower, the compressed air delivery of input in surge chamber, is offset in a part of drive chamber and driven air pressure to the lower thrust of brake piston by it; When input air pressure is higher, the air in surge chamber is discharged by it.
Described brake piston can move up and down in the valve pocket of valve body, and drive chamber only provides with one and drives the joint A of air pressure to communicate, and surge chamber only provides the joint B of buffering air pressure to communicate with one; Be provided with braking inlet chamber and braking discharge chamber in valve body, be provided with an air valve between the two; The below of brake piston is provided with the push rod for supporting air valve, and when brake piston moves down, push rod promotes air valve to opening, and braking inlet chamber is communicated with braking outlet chamber, and after driving air pressure to disappear, air valve is reset to off condition.
The tail end of described piston barrel inner chamber is cecum, and is installed on a pushing top spring; Tube chamber through before and after inner core has, tube chamber front end is provided with joint C, and it is positioned at piston barrel and both forward end seal connect; Switch plunger is provided with the post chamber that a tail end is cecum, and switch plunger is positioned at piston barrel, and tail end and pushing top spring are supported, and post chamber is nested with the end section at inner core, and switch plunger and piston barrel and inner core seal bearing fit; Switch plunger, inner core, piston barrel all have an air gate at sidewall, joint D is provided with outside the air gate of piston barrel, piston barrel is respectively equipped with the joint E, the joint F that communicate with air in the forward and backward side of switch plunger stroke, when switch plunger is positioned at foremost, three air gates are communicated with, and when switch plunger is positioned at rearmost end, only joint D is communicated with through piston barrel inner chamber with joint E; Described joint D is connected through threaded connection with the joint B of brake activation valve.
In three described air gates, at least one diameter is 2mm.
When mounted, joint A, joint C are all connected with the steam supply valve pipeline in brake system, provide operating air pressure by steam supply valve, and steam supply valve is controlled by pedal or handle, and braking inlet chamber is connected with compressed air source, compressed air brake cylinder respectively with braking discharge chamber.
When zero load is braked, gently touch on the brake, the pressurized air that steam supply valve provides enters in the drive chamber of brake activation valve by the road, enter pressure automatic switch by the road simultaneously, and the insufficient pressure that switch plunger front end is subject to is moved to make it, therefore pressurized air enters in the surge chamber on the downside of brake piston through joint D and joint B, the thrust that counteracting a part of drive chamber internal gas pressure produces brake piston by the air pressure in surge chamber, and then it is comparatively mild to make brake piston decline, the unlatching that air valve comparatively relaxes, the generation of tire locking situation when finally realizing car brakeing and prevent braking.
And when load-carrying is braked, deeply step on and continue brake, the pressurized air that steam supply valve provides enters in the drive chamber of brake activation valve by the road, enter by the road in pressure automatic switch, the pressure that switch plunger front end is subject to is enough to make it be moved, and then joint D is connected with joint E simultaneously, namely surge chamber communicates with ambient atmosphere indirectly, therefore brake piston declines fast under the effect driving air pressure, air valve moment is opened completely, realize responding fast, braking actv. object.
The present invention has following beneficial effect: it is conventional pneumatic brake system comparatively, add a pressure automatic switch, adjustable brake atmospheric pressure and release rate can be come as required, when both having ensured unloaded braking, tire can not locking, effective rapidly when ensureing that load-carrying is braked again, substantially increase vehicle safety, and reduce the damage of braking and tire being brought.
Accompanying drawing explanation
Fig. 1 is zero load structural representation when gently touching on the brake.
Fig. 2 is load-carrying structural representation when heavily touching on the brake.
In figure, 1, braking discharge chamber, 2, valve body, 3, surge chamber, 4, drive chamber, 5, brake piston, 6, joint A, 7, steam supply valve, 8, piston barrel, 9, inner core, 10, switch plunger, 11, pushing top spring, 12, joint F, 13, air gate, 14, joint D, 15, joint E, 16, joint C, 17, joint B, 18, push rod, 19, air valve, 20, retracing spring, 21, braking inlet chamber, 22, adjusting bolt, 23, thrust housing, 24, circulation filter core.
Detailed description of the invention
As shown in Figure 1, 2, pressure automatic switch compound type brake activation valve disclosed by the invention, is made up of brake activation valve, pressure automatic switch and connecting line.
Described brake activation valve is made up of valve body 2, brake piston 5 and air valve 19; Described brake piston 5 is placed in the valve pocket of valve body 2, it can move up and down, and the top of brake piston 5 is drive chamber 4, and below is surge chamber 3, drive chamber 4 only provides with one and drives the joint A6 of air pressure to communicate, and surge chamber 3 only provides the joint B17 of buffering air pressure to communicate with one; Be provided with braking inlet chamber 21 and braking discharge chamber 1 in described valve body 2, be provided with the air valve 19 of both control connected state between the two; The below of brake piston 5 is provided with the push rod 18 for supporting air valve 19, when brake piston 5 moves down, push rod 18 will promote air valve 19, make it to opening, and braking inlet chamber 21 is communicated with braking outlet chamber 1, after the driving air pressure in drive chamber 4 disappears, air valve 19 is reset to off condition, and braking inlet chamber 21 is isolated with braking outlet chamber 1; Being installed on retracing spring 20 on the downside of described air valve 19, is required drive when it provides reset by retracing spring 20.
Described pressure automatic switch is made up of piston barrel 8, inner core 9 and switch plunger 10, and three's center shaft is overlapping; The tail end of described piston barrel 8 inner chamber is cecum, and is installed on a pushing top spring 11; Tube chamber through before and after inner core 9 has, tube chamber front end is provided with joint C16, and it is positioned at piston barrel 8 and both forward end seal connect; Switch plunger 10 is provided with the post chamber that a tail end is cecum, and switch plunger 10 is positioned at piston barrel 8, and tail end and pushing top spring 11 are supported, and post chamber is nested with the end section at inner core 9, and switch plunger 10 seals bearing fit with piston barrel 8 and inner core 9; Switch plunger 10, inner core 9, piston barrel 8 all have an air gate 13 at sidewall, in three air gates 13, the diameter of at least one is 2mm, joint D14 is provided with outside the air gate 13 of piston barrel 8, piston barrel 8 is respectively equipped with the joint E15, the joint F13 that communicate with air in the forward and backward side of switch plunger 10 stroke, when switch plunger 10 is positioned at foremost, three air gates 13 are communicated with, switch plunger position 10 when rearmost end only joint D14 be communicated with through the inner chamber of piston barrel 8 with joint E15; The joint B17 of described joint D14 and brake activation valve is fixed by threaded connection and is communicated with, and brake activation valve and pressure automatic switch is fixed together thus.
When mounted, joint A6, joint C16's said apparatus by the road are all connected with the steam supply valve 7 in brake system, provide operating air pressure by steam supply valve 7, and steam supply valve 7 controls mode of operation, below for pedal by pedal or handle; Braking inlet chamber 21 is connected with compressed air brake cylinder with compressed air source respectively with braking discharge chamber 1.
When described switch plunger moves, the air pressure of its front end is at least 4 kilograms.
Shown in Fig. 1, when zero load is braked, gently touch on the brake, the pressurized air that steam supply valve 7 provides enters in the drive chamber 4 of brake activation valve by the road, enter pressure automatic switch by the road simultaneously, and the insufficient pressure that switch plunger 10 front end is subject to is moved to make it, therefore pressurized air enters in the surge chamber 3 on the downside of brake piston 5 through joint D14 and joint B17, the thrust that counteracting a part of drive chamber 4 internal gas pressure produces brake piston 5 by the air pressure in surge chamber 3, and then it is comparatively mild to make brake piston 5 decline, the unlatching that air valve 19 comparatively relaxes, the generation of tire locking situation when finally realizing car brakeing and prevent braking.
Shown in Fig. 2, and when load-carrying is braked, deeply step on and continue brake, the pressurized air that steam supply valve 7 provides enters in the drive chamber 4 of brake activation valve by the road, enters by the road in pressure automatic switch, because air gate 13 is less simultaneously, the pressure durations in switch plunger 10 front rises, to promote it when pressure is greater than 4 kilograms to move backward, and then joint D14 is connected with joint E15, namely surge chamber 3 communicates with ambient atmosphere indirectly; Hinder because surge chamber 3 does not produce the decline of brake piston 5, therefore brake piston 5 declines fast under the effect driving air pressure, is opened completely air valve 19 moment, realizes responding fast, braking actv. object.
Shown in Fig. 2, furthermore, pressure when moving after the Pneumatic pressure of pressure automatic switch and pull switch piston is if can regulate, can further improve its Applicable scope, therefore piston barrel 8 tail end is installed on one for regulating the adjusting bolt 22 of pushing top spring 11 end-position, this adjusting bolt 22 coordinates with piston barrel 8 threads.
Shown in Fig. 2, when joint E15 and joint F13 moves forward and backward for switch plunger 10, corresponding chamber is communicated with air, air-breathing, exhaust can be completed, to guarantee there is difference of pressure before and after switch plunger 10; Simultaneously joint E15 is also for by the air pressure apocatharsis in surge chamber 3.For ensureing the fiting effect of pressure automatic switch inner seal liner, must prevent dust from entering its inside with air, therefore joint E15 is connected, and avoids dust to enter in pressure automatic switch with air thus with a circulation filter core 24 through pipeline with joint F13.
Shown in Fig. 2, the front end-run point of switch plunger 10 can be limited by the tail end of inner core 9, and the tail end of its stroke is limited by a thrust housing 23, and described thrust housing 23 is installed in the intracavity posterior end portion of piston barrel 8.
In the present invention; the particular location etc. that the concrete shape of pressure automatic switch and brake activation valve, joint are installed all has many embodiments; as long as the identical row all belonging to scope of principle; accompanying drawing and concrete enforcement are only a kind of exemplary embodiments, are not construed as limiting scope.
Claims (8)
1. a pressure automatic switch compound type brake activation valve, is characterized in that, it comprises:
The brake activation valve be made up of valve body, brake piston and air valve, air valve is in order to control the connected state of braking gas circuit, and brake piston can move up and down in the valve pocket of valve body, for turning on the power for air valve provides, the top of brake piston is for providing the drive chamber driving air pressure, and below is surge chamber;
And pressure automatic switch, it is connected with surge chamber, and when input air pressure is lower, the compressed air delivery of input in surge chamber, is offset in a part of drive chamber and driven air pressure to the lower thrust of brake piston by it; When input air pressure is higher, the air in surge chamber is discharged by it.
2. a kind of pressure automatic switch compound type brake activation valve according to claim 1, it is characterized in that: described brake piston can move up and down in the valve pocket of valve body, drive chamber only provides with one and drives the joint A of air pressure to communicate, and surge chamber only provides the joint B of buffering air pressure to communicate with one; Be provided with braking inlet chamber and braking discharge chamber in valve body, be provided with an air valve between the two; The below of brake piston is provided with the push rod for supporting air valve, and when brake piston moves down, push rod promotes air valve to opening, and braking inlet chamber is communicated with braking outlet chamber, and after driving air pressure to disappear, air valve is reset to off condition.
3. a kind of pressure automatic switch compound type brake activation valve according to claim 1, is characterized in that: the tail end of described piston barrel inner chamber is cecum, and is installed on a pushing top spring; Tube chamber through before and after inner core has, tube chamber front end is provided with joint C, and it is positioned at piston barrel and both forward end seal connect; Switch plunger is provided with the post chamber that a tail end is cecum, and switch plunger is positioned at piston barrel, and tail end and pushing top spring are supported, and post chamber is nested with the end section at inner core, and switch plunger and piston barrel and inner core seal bearing fit; Switch plunger, inner core, piston barrel all have an air gate at sidewall, joint D is provided with outside the air gate of piston barrel, piston barrel is respectively equipped with the joint E, the joint F that communicate with air in the forward and backward side of switch plunger stroke, when switch plunger is positioned at foremost, three air gates are communicated with, and when switch plunger is positioned at rearmost end, only joint D is communicated with through piston barrel inner chamber with joint E; Described joint D is connected through threaded connection with the joint B of brake activation valve.
4. a kind of pressure automatic switch compound type brake activation valve according to claim 3, is characterized in that: in three described air gates, at least one diameter is 2mm.
5. a kind of pressure automatic switch compound type brake activation valve according to claim 3, is characterized in that: when described switch plunger moves, the air pressure of its front end is at least 4 kilograms.
6. a kind of pressure automatic switch compound type brake activation valve according to claim 3, is characterized in that: piston barrel tail end is installed on one for regulating the adjusting bolt of pushing top spring end-position, and this adjusting bolt coordinates with piston barrel threads.
7. a kind of pressure automatic switch compound type brake activation valve according to claim 3, is characterized in that: joint E is connected with a circulation filter core through pipeline with joint F.
8. a kind of pressure automatic switch compound type brake activation valve according to claim 3, it is characterized in that: the front end-run point of switch plunger is limited by the tail end of inner core, and the tail end of its stroke is limited by a thrust housing, thrust housing is installed in the intracavity posterior end portion of piston barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715659.5A CN104477159B (en) | 2014-11-28 | 2014-11-28 | Pressure automatic switch combined type brake valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715659.5A CN104477159B (en) | 2014-11-28 | 2014-11-28 | Pressure automatic switch combined type brake valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104477159A true CN104477159A (en) | 2015-04-01 |
| CN104477159B CN104477159B (en) | 2017-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410715659.5A Active CN104477159B (en) | 2014-11-28 | 2014-11-28 | Pressure automatic switch combined type brake valve |
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| Country | Link |
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| CN (1) | CN104477159B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585154A (en) * | 2017-06-07 | 2018-01-16 | 浙江科力车辆控制系统有限公司 | A kind of multi-functional anti-ponding brake valve for trailer |
| CN114063669A (en) * | 2021-11-02 | 2022-02-18 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1565208A (en) * | 1976-01-02 | 1980-04-16 | Bendix Westinghouse Ltd | Vehicle braking systems |
| CN1699097A (en) * | 2005-04-20 | 2005-11-23 | 淄博龙达汽车配件制造有限公司 | Electrically controlled trailer brake valve |
| CN1876456A (en) * | 2005-06-11 | 2006-12-13 | 淄博龙达汽车配件制造有限公司 | Double pipe electrically-controlled trailer brake valve |
| CN204250035U (en) * | 2014-11-28 | 2015-04-08 | 王汉峰 | Pressure automatic switch compound type brake activation valve |
-
2014
- 2014-11-28 CN CN201410715659.5A patent/CN104477159B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1565208A (en) * | 1976-01-02 | 1980-04-16 | Bendix Westinghouse Ltd | Vehicle braking systems |
| CN1699097A (en) * | 2005-04-20 | 2005-11-23 | 淄博龙达汽车配件制造有限公司 | Electrically controlled trailer brake valve |
| CN1876456A (en) * | 2005-06-11 | 2006-12-13 | 淄博龙达汽车配件制造有限公司 | Double pipe electrically-controlled trailer brake valve |
| CN204250035U (en) * | 2014-11-28 | 2015-04-08 | 王汉峰 | Pressure automatic switch compound type brake activation valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107585154A (en) * | 2017-06-07 | 2018-01-16 | 浙江科力车辆控制系统有限公司 | A kind of multi-functional anti-ponding brake valve for trailer |
| CN114063669A (en) * | 2021-11-02 | 2022-02-18 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
| CN114063669B (en) * | 2021-11-02 | 2023-03-10 | 东北电力大学 | Reheating temperature automatic regulation and control device for thermal power plant |
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| Publication number | Publication date |
|---|---|
| CN104477159B (en) | 2017-07-28 |
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Effective date of registration: 20220823 Address after: 256800 East Outer Ring Road, Zhanhua District, Binzhou City, Shandong Province (south of Xiyang Coal Field) Patentee after: Shandong Anshun Brake System Co.,Ltd. Address before: No. 133, Dingjia Village, Fuguo Town, Zhanhua County, Binzhou City, Shandong Province, 256800 Patentee before: Wang Hanfeng |