CN108297851A - Vehicle booster brake apparatus - Google Patents
Vehicle booster brake apparatus Download PDFInfo
- Publication number
- CN108297851A CN108297851A CN201810157785.1A CN201810157785A CN108297851A CN 108297851 A CN108297851 A CN 108297851A CN 201810157785 A CN201810157785 A CN 201810157785A CN 108297851 A CN108297851 A CN 108297851A
- Authority
- CN
- China
- Prior art keywords
- brake
- valve
- wheel brake
- accumulator
- hydraulic value
- 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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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
- B60T13/12—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 liquid
- B60T13/14—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 liquid using accumulators or reservoirs fed by pumps
-
- 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
- B60T13/40—Compressed-air systems indirect, i.e. compressed air booster units indirect systems
- B60T13/44—Compressed-air systems indirect, i.e. compressed air booster units indirect systems with two-chamber booster units
-
- 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
- B60T13/58—Combined or convertible systems
- B60T13/581—Combined or convertible systems both hydraulic and pneumatic
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
A kind of vehicle booster brake apparatus, including arrestment mechanism, front wheel brake and rear wheel brake, the arrestment mechanism includes booster valve, brake valve, lubricating cup, repairing check valve and brake cylinder, further include gas bag, dual air brake valve, the first accumulator, the first Pneumatical hydraulic value, the second accumulator and the second Pneumatical hydraulic value, the arrestment mechanism is installed on front wheel brake and rear wheel brake respectively.The present invention carries out power brake by the way that accumulator to be used as after power source can realize engine misses, the present invention by by dual air brake valve to being set as gas channel between Pneumatical hydraulic value, the response speed of brake is set to accelerate, it is not in braking hysteresis phenomenon, the present invention when front wheel brake, rear wheel brake distance farther out when, front wheel brake and the time difference that rear wheel brake responds are relatively short, and rear service brake will not be lagged obviously, braking ability is not interfered with, is not easy to cause traffic accident.
Description
The application is that application No. is the divisional applications of 2016104193214 applications for a patent for invention.
Technical field
The present invention relates to a kind of vehicles, more particularly to vehicle booster brake apparatus.
Background technology
As people increasingly pay close attention to conservation of natural environment, free of contamination electric vehicle at a popular direction,
Due to eliminating traditional fuel engines, original vacuum booster loses vacuum and can not power brake.Chinese patent Shen
Numbers 200810163260.5 a kind of hydraulic power-assisted brake device please be disclosed, using hydraulic booster instead of vacuum booster,
It solves the problems, such as that because cancelling fuel engines power brake can not be carried out, but foregoing invention is by Engine driven Hydraulic Pump work
Make, hydraulic pump no longer works after engine misses, cannot also generate pressure oil, therefore can not achieve and help after engine misses
Dynamic braking can cause traffic accident in this way.Foregoing invention is braked using hydraulic oil, since the peak flow rate (PFR) of hydraulic oil is general
No more than 6m/s, in this way when brake pedal component with a distance from brake farther out when, pressure oil acts on when brake pedal component
Time to the brake cylinder of brake is longer, will appear braking hysteresis phenomenon in this way, and since general front wheel brake is from system
Dynamic pedal assembly is closer, and the brake cylinder that pressure oil can be introduced into front wheel brake is braked, when front wheel brake and trailing wheel
The distance between brake farther out when, pressure oil is applied to the time difference of the brake cylinder on front wheel brake and rear wheel brake
Relatively long, rear service brake can be lagged obviously, seriously affect braking ability, cause traffic accident.
Invention content
It remains to realize power brake after the object of the present invention is to provide one kind stopping working, be not in braking sluggishness, trailing wheel system
The dynamic vehicle booster brake apparatus that will not cause traffic accident that will not obviously lag.
To achieve the goals above, the technical scheme is that：
A kind of vehicle booster brake apparatus, including arrestment mechanism, front wheel brake and rear wheel brake, the arrestment mechanism include
Booster valve, brake valve, lubricating cup, repairing check valve and brake cylinder, the booster valve have First piston bar and first piston, institute
Stating brake valve has second piston bar and second piston, the First piston bar of the booster valve and the second piston bar of brake valve solid
Fixed connection is integral, and the lubricating cup is connected by the rodless cavity of repairing check valve and brake valve, and the rodless cavity of brake valve with
The rodless cavity of brake cylinder connects, and the third piston rod of brake cylinder is connect with front wheel brake or rear wheel brake, the oil
Mounting height of the cup on vehicle is higher than mounting height of the brake cylinder on vehicle, and improvement is：
Further include gas bag, dual air brake valve, the first accumulator, the first Pneumatical hydraulic value, the second accumulator and the second gas control liquid
Pressure valve, the arrestment mechanism are installed on front wheel brake and rear wheel brake respectively, the dual air brake valve air inlet P2
2 mouthfuls mouth, execution of mouth are connect with K mouthfuls of the control mouth of gas bag, the first Pneumatical hydraulic value respectively, the inlet P of the first Pneumatical hydraulic value
A mouthfuls mouth, execution of mouth are connect with the rodless cavity of the booster valve on the first accumulator, front wheel brake respectively, the two-chamber gas braking
P1 mouthfuls of valve air inlet, execution A1 mouthfuls of Jie of mouth do not connect with K mouthfuls of the control mouth of gas bag, the second Pneumatical hydraulic value, the second Pneumatic and hydraulic
A mouthfuls P mouthfuls of inlet, execution of the mouth of valve are connect with the rodless cavity of the booster valve on the second accumulator, rear wheel brake respectively.
The length of hydraulic channel of second accumulator to the second Pneumatical hydraulic value is less than the first accumulator to the first gas
The length of the hydraulic channel of draining pressure valve, the length of the booster valve hydraulic channel on second Pneumatical hydraulic value to rear wheel brake
Degree is less than the first Pneumatical hydraulic value to the length of the booster valve hydraulic channel of front wheel brake.
The length in the dual air brake valve to the gas channel of the second Pneumatical hydraulic value is less than dual air brake valve to first
The length in the gas channel of Pneumatical hydraulic value.
Also there is safety valve, the safety valve to be connect with gas bag.
Benefit of the invention is that：(1) still have by regarding accumulator as hydraulic oil after power source can realize engine misses
There is pressure, and power brake can be carried out, traffic accident will not be caused in this way.(2) it is more than the original of flow rate of liquid according to gas flow rate
Reason by by dual air brake valve to being set as gas channel between Pneumatical hydraulic value, only by the system on Pneumatical hydraulic value to brake
It is set as hydraulic channel between dynamic wheel cylinder, so that the response speed of brake is accelerated, is not in braking hysteresis phenomenon in this way, is not easy
Cause traffic accident.(3) it is more than the principle of flow rate of liquid according to gas flow rate by by dual air brake valve to Pneumatical hydraulic value
Between be set as gas channel, only will be set as hydraulic channel between the brake cylinder on Pneumatical hydraulic value to brake, work as front-wheel
Brake, rear wheel brake distance farther out when, front wheel brake and the time difference that rear wheel brake responds are relatively short, trailing wheel system
It is dynamic obviously to lag, braking ability is not interfered with, is not easy to cause traffic accident.
Description of the drawings
Fig. 1 is the principle of the present invention figure.
Specific implementation mode
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated：
As shown in Figure 1, a kind of vehicle booster brake apparatus, including arrestment mechanism 50, front wheel brake 10 and trailing wheel shave device 13,
The arrestment mechanism 50 includes booster valve 5, brake valve 6, lubricating cup 7, repairing check valve 8 and brake cylinder 9, and the booster valve 5 has
There are a First piston bar 5-1 and first piston 5-2, the brake valve 6 has second piston bar 6-1 and second piston 6-2, described to help
The First piston bar 5-1 of power valve 5 is fixedly connected with the second piston bar 6-1 of brake valve 6 or integrally, the lubricating cup 7 passes through benefit
Oily check valve 8 is connect with the rodless cavity of brake valve 6, and the rodless cavity of brake valve 6 is connect with the rodless cavity of brake cylinder 9, braking
The third piston rod 9-1 of wheel cylinder 9 is connect with front wheel brake 10 or rear wheel brake 13, installation of the lubricating cup 7 on vehicle
Height is higher than mounting height of the brake cylinder 9 on vehicle, and improvement is：
Further include gas bag l, dual air brake valve 2, the first accumulator 3, the first Pneumatical hydraulic value 4, the second accumulator 11 and second
Pneumatical hydraulic value 12, the arrestment mechanism 50 are installed in respectively on front wheel brake 10 and rear wheel brake 13, the two-chamber gas
A2 mouthfuls P2 mouthfuls of 2 air inlet of brake valve, execution of mouth are connect with K mouthfuls of the control mouth of gas bag 1, the first Pneumatical hydraulic value 4 respectively, the first gas
P mouthfuls of the inlet of draining pressure valve 4 executes A mouthfuls of mouth respectively with the booster valve 5 on the first accumulator 3, front wheel brake 10 without bar
Chamber connects, and P1 mouthfuls of 2 air inlet of the dual air brake valve executes the control with gas bag 1, the second Pneumatical hydraulic value 12 respectively of A1 mouthfuls of mouth
The connection of K mouthfuls of donsole, A mouthfuls P mouthful of the inlet of the second Pneumatical hydraulic value 12, execution of mouth respectively with 11 rear wheel brake of the second accumulator
The rodless cavity of booster valve 5 on 13 connects.
The length of the hydraulic channel of second accumulator, 11 to the second Pneumatical hydraulic value 12 is less than the first accumulator 3 to the
The length of the hydraulic channel of one Pneumatical hydraulic value 4,5 liquid of booster valve on second Pneumatical hydraulic value 12 to rear wheel brake 13
The length of pressure passageway is less than the first Pneumatical hydraulic value 4 to the length of 5 hydraulic channel of booster valve of front wheel brake 10.According to gas
Flow velocity is more than the principle of flow rate of liquid, after driver steps on dual air brake valve 2, front wheel brake 10 and rear wheel brake 13
The time difference of response can further shorten, and the time that pressure oil enters the brake cylinder 9 on rear wheel brake 13 more will not be apparent
Lag, further increases braking ability, is not easy to cause traffic accident.
The length in the gas channel of 2 to the second Pneumatical hydraulic value 12 of the dual air brake valve be less than dual air brake valve 2 to
The length in the gas channel of the first Pneumatical hydraulic value 4.In this way after driver steps on dual air brake valve 2, rear wheel brake 13
Response time can be prior to the response time of front wheel brake 10, therefore can adjust the system of rear wheel brake 13 and front wheel brake 10
Dynamic sequence.
Also there is safety valve 14, the safety valve 14 to be connect with gas bag 1.
When driver, which steps on dual air brake valve 2, to brake, P2 mouthfuls of the air inlet of dual air brake valve 2 and execution mouth A2
It mouthful communicating, pressure air enters K mouthfuls of the control mouth of the first Pneumatical hydraulic value 4 through dual air brake valve 2 in gas bag 1, and at this moment first
P mouthfuls of the inlet of Pneumatical hydraulic value 4 communicates for mouth A mouthfuls with execution, and the pressure oil in accumulator 3 enters helping on front wheel brake 10
The rodless cavity of power valve 5 pushes first piston 5-2 to drive First piston bar 5-1 movements, since First piston bar 5-1 and second lives
Stopper rod 6-1 is fixedly connected, so second piston bar 6-1 drives second piston 6-2 movements, makes the hydraulic pressure of the rodless cavity of brake valve 6
Oil enters brake cylinder 9, to make front wheel brake 10 generate braking.
Meanwhile P1 mouthfuls of the air inlet of dual air brake valve 2 communicates for mouth A1 mouthfuls with execution, pressure air is through two-chamber gas in gas bag 1
Brake valve 2 enters K mouthfuls of the control mouth of the second Pneumatical hydraulic value 12, at this moment P mouthfuls of the inlet of the second Pneumatical hydraulic value 12 and execution
A mouthfuls of mouth communicates, and the pressure oil in accumulator 11 enters the rodless cavity of the booster valve 5 on rear wheel brake 13, pushes first piston
5-2 drives First piston bar 5-1 movements, is even pressed since First piston bar 5-1 is fixed with second piston bar 6-1, so second lives
Stopper rod 6-1 drives second piston 6-2 movements, so that the hydraulic oil of the rodless cavity of brake valve 6 is entered brake cylinder 9, to make trailing wheel
Brake 13 generates braking.
After engine misses, due to still having pressed gas in gas bag, made when driver steps on dual air brake valve 2
When dynamic, pressure air remains to K mouthfuls of the control mouth and the second gas that enter the first Pneumatical hydraulic value 4 through dual air brake valve 2 in gas bag 1
K mouthfuls of the control mouth of draining pressure valve 12, and the hydraulic oil of the first accumulator 3 and the second accumulator 11 still has pressure, therefore still have
Pressure oil enters the rodless cavity of the booster valve 5 on front wheel brake 10 and rear wheel brake 13, to which front wheel brake 10 is with after
It takes turns brake 13 and generates braking, be not easy to cause traffic accident in this way.
Since the flow velocity of compressed air is more than the flow velocity of hydraulic oil, the flow velocity of general hydraulic oil is no more than 6m/s, the present invention
The flow velocity of hydraulic oil is designed as 2m/s, and the flow velocity of compressed air is designed as 20 m/s.Due to dual air brake valve 2 to
One Pneumatical hydraulic value 4 and the second Pneumatical hydraulic value 12 are gas channel and compressed air flow velocity is very fast, step on two-chamber gas system in this way
After dynamic valve 2, the response speed of front wheel brake 10 and rear wheel brake 13 is accelerated, therefore dual air brake valve 2 is from front wheel brake
Device 10 and rear wheel brake 13 farther out when, front wheel brake 10 and rear wheel brake can be made quickly by stepping on after dual air brake valve 2
13 generate braking.Be not in braking hysteresis phenomenon in this way, be not easy to cause traffic accident.
Similarly when the distance between front wheel brake 10 and rear wheel brake 13 farther out when, due to dual air brake valve 2
It is gas channel to the first Pneumatical hydraulic value 4, the second Pneumatical hydraulic value 12, the principle of flow rate of liquid is more than according to gas flow rate,
After driver steps on dual air brake valve 2, the first Pneumatical hydraulic value 4,12 action response of the second Pneumatical hydraulic value time difference
It can shorten, the time difference that such front wheel brake 10 is responded with rear wheel brake 13 can be relatively short, the braking of rear wheel brake
Time will not obviously lag, and not interfere with braking ability, be not easy to cause traffic accident.
Claims (4)
1. a kind of vehicle booster brake apparatus, it is characterised in that：Including gas bag (1), dual air brake valve (2), the first accumulator
(3), the first Pneumatical hydraulic value (4), the second accumulator (11) and the second Pneumatical hydraulic value (12), the arrestment mechanism (50) is respectively
It is installed on front wheel brake (10) and rear wheel brake (13), air inlet P2 mouthfuls of the dual air brake valve (2) executes mouth A2
Mouth is connect with K mouthfuls of the control mouth of gas bag (1), the first Pneumatical hydraulic value (4) respectively, the inlet P of the first Pneumatical hydraulic value (4)
A mouthfuls mouth, execution of mouth are connect with the rodless cavity of the booster valve (5) on the first accumulator (3), front wheel brake (10) respectively, described
Air inlet P1 mouthfuls of dual air brake valve (2), execute A1 mouthfuls of mouth respectively with gas bag (1), the control mouth K of the second Pneumatical hydraulic value (12)
Mouthful connection, A mouthfuls P mouthful of the inlet of the second Pneumatical hydraulic value (12), execution of mouth respectively with the second accumulator (11), rear wheel brake
(13) rodless cavity of the booster valve (5) on connects.
2. vehicle booster brake apparatus according to claim 1, it is characterised in that：Second accumulator (11) is to second
The length of the hydraulic channel of Pneumatical hydraulic value (12) is less than the first accumulator (3) to the hydraulic channel of the first Pneumatical hydraulic value (4)
Length, the length of booster valve (5) hydraulic channel on second Pneumatical hydraulic value (12) to rear wheel brake (13) is less than
First Pneumatical hydraulic value (4) to booster valve (5) hydraulic channel of front wheel brake (10) length.
3. vehicle booster brake apparatus according to claim 2, it is characterised in that：The dual air brake valve (2) is to
The length in the gas channel of two Pneumatical hydraulic values (12) is less than dual air brake valve (2) to the gas channel of the first Pneumatical hydraulic value (4)
Length.
4. vehicle booster brake apparatus according to claim 1, it is characterised in that：Also there is safety valve (14), the peace
Full valve (14) is connect with gas bag (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157785.1A CN108297851A (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157785.1A CN108297851A (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
| CN201610419321.4A CN105946831B (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419321.4A Division CN105946831B (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108297851A true CN108297851A (en) | 2018-07-20 |
Family
ID=56906415
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810157785.1A Pending CN108297851A (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
| CN201610419321.4A Active CN105946831B (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610419321.4A Active CN105946831B (en) | 2016-06-13 | 2016-06-13 | Vehicle booster brake apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108297851A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113460010B (en) * | 2021-07-12 | 2024-02-13 | 广东盈峰智能环卫科技有限公司 | Hydraulic power-assisted braking system and electric sanitation truck |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957315A (en) * | 1974-11-15 | 1976-05-18 | Caterpillar Tractor Co. | Brake control system with proportional loading of the brakes during retarding |
| DE2453466C2 (en) * | 1974-11-12 | 1983-02-24 | Robert Bosch Gmbh, 7000 Stuttgart | Pressure ratio valve |
| CN202080265U (en) * | 2011-05-27 | 2011-12-21 | 北汽福田汽车股份有限公司 | Pneumatic braked vehicle and vehicle brake control device thereof |
| CN204736843U (en) * | 2015-06-24 | 2015-11-04 | 常州科研试制中心有限公司 | Colliery support carrier emergency stop apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1565681A (en) * | 1976-02-25 | 1980-04-23 | Massey Ferguson Services Nv | Braking systems |
| CN2924108Y (en) * | 2006-05-29 | 2007-07-18 | 徐永江 | Pneumatical hydraulic value |
| CN103879394B (en) * | 2014-03-28 | 2016-04-20 | 常州科研试制中心有限公司 | The parking brake system of underground mine use towed vehicle |
| CN104442267A (en) * | 2014-11-10 | 2015-03-25 | 三一汽车起重机械有限公司 | Oil gas suspension system, engineering vehicle and crane |
| CN204641733U (en) * | 2015-04-09 | 2015-09-16 | 连云港天明装备有限公司 | A kind of underground coal mine shovel car gas control accumulator valve group |
| CN108068782B (en) * | 2015-12-30 | 2019-07-16 | 上海工业控制安全创新科技有限公司 | Vehicle control system, working method |
-
2016
- 2016-06-13 CN CN201810157785.1A patent/CN108297851A/en active Pending
- 2016-06-13 CN CN201610419321.4A patent/CN105946831B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2453466C2 (en) * | 1974-11-12 | 1983-02-24 | Robert Bosch Gmbh, 7000 Stuttgart | Pressure ratio valve |
| US3957315A (en) * | 1974-11-15 | 1976-05-18 | Caterpillar Tractor Co. | Brake control system with proportional loading of the brakes during retarding |
| CN202080265U (en) * | 2011-05-27 | 2011-12-21 | 北汽福田汽车股份有限公司 | Pneumatic braked vehicle and vehicle brake control device thereof |
| CN204736843U (en) * | 2015-06-24 | 2015-11-04 | 常州科研试制中心有限公司 | Colliery support carrier emergency stop apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105946831B (en) | 2018-06-29 |
| CN105946831A (en) | 2016-09-21 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180720 |
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| RJ01 | Rejection of invention patent application after publication |