CN112706733A - Two-stage slope-parking system and vehicle - Google Patents
Two-stage slope-parking system and vehicle Download PDFInfo
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- CN112706733A CN112706733A CN202110031957.2A CN202110031957A CN112706733A CN 112706733 A CN112706733 A CN 112706733A CN 202110031957 A CN202110031957 A CN 202110031957A CN 112706733 A CN112706733 A CN 112706733A
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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
- 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
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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
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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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
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- Regulating Braking Force (AREA)
Abstract
The invention discloses a two-stage slope-parking system and a vehicle, wherein the two-stage slope-parking system comprises: the double-stage slope-stopping manual valve has a first driving state, a parking state and a temporary stopping state; the parking brake subsystem comprises a first relay valve and a spring brake cylinder; the critical stop function subsystem comprises a second relay valve and a brake air chamber; when the two-stage slope-parking manual valve is switched from the first driving state to the parking state, the two-stage slope-parking manual valve controls the first relay valve to exhaust the spring brake cylinder, so that the parking brake function is realized; when the two-stage slope-stopping manual valve is switched from the parking state to the temporary stop state, the two-stage slope-stopping manual valve controls the first relay valve to exhaust the spring brake cylinder, and controls the second relay valve to inflate the brake air chamber, so that the parking brake function and the temporary stop function are realized. The working states of the parking brake subsystem and the temporary stopping functional subsystem are controlled through three states of the double-stage slope stopping manual valve, and when the vehicle is parked on a slope, the two subsystems work simultaneously to improve the slope stopping capacity.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a two-stage slope parking system and a vehicle.
Background
At present, commercial car ubiquitous has the great operating mode of bearing in the market, and former car parking braking system can't provide sufficient parking power and satisfy user's actual demand under this kind of operating mode, especially in big areas of slopes such as mountain area, and the requirement to the parking ability under the great operating mode of bearing is higher. The reliability of the vehicle parking process in the prior art is low, and the prior art still needs to be improved and developed.
Disclosure of Invention
The invention aims to provide a two-stage slope parking system and a vehicle, and aims to solve the problem that in the prior art, the parking capacity of the vehicle is insufficient when the vehicle is parked under working conditions such as a slope and the like with high requirements on the parking capacity.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dual stage hill holding system comprising:
a two-stage hill-holding manual valve having at least a first driving state, a parking state, and a temporary stop state;
the parking brake subsystem comprises a first relay valve and at least two spring brake cylinders, wherein a control port of the first relay valve is connected with an air outlet of the two-stage slope-retaining manual valve, and an air outlet of the first relay valve is connected with the spring brake cylinders;
the system comprises a temporary stop functional subsystem and a control system, wherein the temporary stop functional subsystem comprises a second relay valve and at least two brake air chambers, a control port of the second relay valve is connected with the other air outlet of the two-stage slope-stopping manual valve, and an air outlet of the second relay valve is connected with the brake air chambers;
the air inlets of the two-stage slope-stopping manual valve, the first relay valve and the second relay valve are all connected with an air cylinder;
when the double-stage slope-stopping manual valve is switched from the first driving state to the parking state, the double-stage slope-stopping manual valve controls the first relay valve to exhaust the spring brake cylinder, and a parking brake function is realized;
when the two-stage slope-stopping manual valve is switched from the parking state to the temporary stop state, the two-stage slope-stopping manual valve controls the first relay valve to exhaust the spring brake cylinder, and a parking brake function is realized; meanwhile, the double-stage slope-stopping manual valve controls the second relay valve to inflate the brake chamber, and the function of temporary stop is achieved.
As an alternative to the above-mentioned dual stage hill-holding system, the dual stage hill-holding system further includes:
and the brake valve at least has a second driving state and a braking state, the air outlet of the brake valve is connected with the other control port of the second relay valve, and when the brake valve is switched from the second driving state to the braking state, the brake valve controls the second relay valve to inflate the brake air chamber so as to realize a braking function.
As an alternative to the above-described two-stage hill-holding system, the two-stage hill-holding system is applied to a truck of 8 × 4 type or a truck of 6 × 4 type.
As an alternative to the above two-stage hill-holding system, the two-stage hill-holding system is applied to an 8 × 4 truck, the 8 × 4 truck includes four axles, the brake chambers are disposed on the wheels of the front two axles of the 8 × 4 truck, and the spring brake cylinders are disposed on the wheels of the rear two axles of the 8 × 4 truck.
As an alternative of the above two-stage hill-holding system, the temporary stop function subsystem further includes a third relay valve, an anti-lock electromagnetic valve is arranged in the third relay valve, and the second relay valve is connected to the brake chamber through the third relay valve.
As an alternative to the above two-stage hill-holding system, the number of the third relay valves is two, the second relay valve is connected to the brake chamber on the left wheel of the 8 × 4 type truck through one of the two third relay valves, and the second relay valve is connected to the brake chamber on the right wheel of the 8 × 4 type truck through the other of the two third relay valves.
As an alternative to the above two-stage hill-holding system, the gas cylinders include two, respectively a first gas cylinder and a second gas cylinder;
the air inlets of the two-stage slope-stopping manual valve and the first relay valve are connected to the first air cylinder;
and air inlets of the second relay valve, the brake valve and the third relay valve are all connected to the second air reservoir.
As an alternative to the above-mentioned dual stage hill-holding system, the dual stage hill-holding system further includes:
and the indicator light is connected with an electrical interface of the second relay valve and is used for indicating whether the impending function is started or not.
As an alternative of the above two-stage hill-holding system, the first relay valve is arranged corresponding to a hand brake of the automobile, and the brake valve is arranged corresponding to a brake pedal of the automobile.
A vehicle comprising a dual stage hill holding system as described above.
The invention has the advantages that:
the parking braking subsystem and the parking braking subsystem are controlled by a two-stage slope-parking manual valve, the two-stage slope-parking manual valve is controlled to have a first driving state, a parking state and a parking state, the two-stage slope-parking manual valve can be controlled by a hand brake of an automobile, for example, the two-stage slope-parking manual valve is in the first driving state when the hand brake is put down, the two-stage slope-parking manual valve is in the parking state when the hand brake is pulled up, and the two-stage slope-parking manual valve is in the parking state when the hand brake is pulled back;
when the vehicle runs, the hand brake is put down, the two-stage slope-parking manual valve is in a first running state, the original parking brake subsystem and the parking function subsystem do not work, and the vehicle can run normally;
when the vehicle is parked, the hand brake is pulled up, the two-stage slope-parking manual valve is switched to the parking state from the first driving state, and the two-stage slope-parking manual valve controls the parking braking subsystem to work, so that the mechanical parking braking is realized;
when the mechanical parking brake cannot meet the braking requirement, the hand brake is continuously pulled backwards, so that the two-stage slope-parking manual valve is switched from the parking state to the temporary stopping state, and the two-stage slope-parking manual valve simultaneously controls the parking brake subsystem and the temporary stopping functional subsystem to work, so that the two-stage brake is realized;
when a vehicle needs strong braking capacity, if the braking force is insufficient only through mechanical parking braking, the two-stage slope parking manual valve can be switched to a temporary stopping state to control the parking braking subsystem and the temporary stopping functional subsystem to work simultaneously so as to meet the braking requirement, provide strong braking capacity, realize the reliable parking of the vehicle under the temporary stopping condition of the slope and improve the slope parking capacity; in addition, the parking braking subsystem and the temporary stopping functional subsystem can be controlled to work simultaneously through the two-stage slope-stopping manual valve, even if any subsystem leaks air, braking can be still achieved through the other subsystem, and reliability is high.
Drawings
FIG. 1 is a schematic structural diagram of a dual stage hill-holding system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a two-stage hill-holding manual valve according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a second relay valve embodiment of the present invention.
In the figure:
100. a two-stage hill-holding system; 110. a parking brake subsystem; 120. a critical stop function subsystem;
1. a two-stage slope-retaining manual valve; 11. a first air outlet; 12. a second air outlet; 2. a first relay valve; 3. a first gas cartridge; 4. an indicator light; 5. a second relay valve; 52. a first control port; 53. a second control port; 54. an electrical interface; 6. a third relay valve; 7. a brake valve; 8. a second gas cartridge; 9. a brake chamber; 10. and a spring brake cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides a double-stage slope-parking system, as shown in fig. 1, the double-stage slope-parking system 100 comprises a parking brake subsystem 110 and a temporary stop function subsystem 120, and the working states of the parking brake subsystem 110 and the temporary stop function subsystem 120 are controlled by a double-stage slope-parking manual valve 1. The parking brake subsystem 110 is an original parking brake system of the automobile, and the parking brake subsystem 110 works under the control of a hand brake when the hand brake is pulled up. The two-stage hill-holding system 100 of the invention is additionally provided with the temporary stopping functional subsystem 120 on the basis of the original parking braking system (namely the parking braking subsystem 110), when the automobile is in parking working conditions such as a slope and the like, the parking braking subsystem 110 and the temporary stopping functional subsystem 120 work simultaneously, sufficient braking force is output, and reliable parking is realized.
As shown in fig. 2, the two-stage hill-holding manual valve 1 has at least three states, i.e., a first driving state, a parking state and a temporary stop state, and the different states correspond to different operating states of the parking brake subsystem 110 and the temporary stop function subsystem 120.
The state of the two-stage slope-stopping manual valve 1 can be controlled by a hand brake of the automobile, that is, the state of the two-stage slope-stopping manual valve 1 corresponds to the position of the hand brake, the position of the hand brake is different, and the state of the corresponding two-stage slope-stopping manual valve 1 is also different. For example, when the hand brake is put down, the two-stage slope-retaining manual valve 1 is in a first driving state, when the hand brake is pulled up, the two-stage slope-retaining manual valve 1 is in a parking state, and when the hand brake is pulled backwards again, the two-stage slope-retaining manual valve 1 is in a temporary stop state;
when the vehicle runs, the hand brake is put down, the two-stage slope-parking manual valve 1 is in a first running state, the original parking brake subsystem 110 and the parking function subsystem 120 do not work, and the vehicle can run normally;
when a vehicle is parked, a hand brake is pulled up, the two-stage slope-parking manual valve 1 is switched to a parking state from a first driving state, and the two-stage slope-parking manual valve 1 controls the parking brake subsystem 110 to work, so that mechanical parking brake is realized;
when the mechanical parking brake cannot meet the braking requirement, the hand brake is continuously pulled backwards, so that the two-stage slope-parking manual valve 1 is switched from the parking state to the temporary stopping state, and at the moment, the two-stage slope-parking manual valve 1 simultaneously controls the parking brake subsystem 110 and the temporary stopping functional subsystem 120 to work, so that two-stage braking is realized;
when the vehicle needs strong braking capacity, the two-stage slope-parking system 100 of the invention can control the parking braking subsystem 110 and the temporary stopping functional subsystem 120 to work simultaneously by switching the two-stage slope-parking manual valve 1 to the temporary stopping state, so as to meet the braking requirement, provide strong braking capacity and realize the reliable parking of the vehicle under the temporary stopping condition of the slope. In addition, the parking braking subsystem 110 and the temporary stopping functional subsystem 120 can be controlled to work simultaneously through the double-stage hill-holding manual valve 1, even if any subsystem leaks air, the other subsystem can still be used for realizing braking, and the reliability is high.
Specifically, with reference to fig. 1 and 2, the parking brake subsystem 110 includes a first relay valve 2, at least two spring brake cylinders 10, and a first gas cartridge 3. The control port of the first relay valve 2 is connected with the first air outlet 11 of the two-stage slope-parking manual valve 1 and is used for controlling the implementation and release of a parking braking function when the two-stage slope-parking manual valve 1 is switched from a first driving state to a parking state, so that the mechanical parking braking function of a vehicle is realized; the air outlet of the first relay valve 2 is connected with the air passage of the parking cavity of the spring brake cylinder 10 and is used for implementing and releasing the parking brake function. The air inlets of the first relay valve 2 and the two-stage slope-stopping manual valve 1 are both connected with a first air reservoir 3, so that the first air reservoir 3 provides air sources for the first relay valve 2 and the two-stage slope-stopping manual valve 1. When the two-stage slope-stopping manual valve 1 is switched from the first driving state to the parking state, the two-stage slope-stopping manual valve 1 can control the first relay valve 2 to exhaust the spring brake cylinder 10, and the parking brake function is realized.
Referring to fig. 1 and 3, the parking function subsystem 120 includes a second relay valve 5, a third relay valve 6, at least two brake chambers 9, and a second air reservoir 8. The first control port 52 of the second relay valve 5 is connected with the second air outlet 12 of the two-stage hill-holding manual valve 1 and is used for controlling the implementation and release of the temporary stop function when the two-stage hill-holding manual valve 1 is switched from the parking state to the temporary stop state. An air outlet of the second relay valve 5 (for example, an air outlet of a reference numeral 51 in fig. 3, namely, an air outlet of the second relay valve 5) is connected with a control port of the third relay valve 6, and an air outlet of the third relay valve 6 is connected with an air passage of the brake chamber 9, and is used for executing a hill-holding function of the vehicle. The third relay valve 6 can also be cancelled, the air outlet of the second relay valve 5 is directly connected with the brake air chamber 9, and the air passage of the brake air chamber 9 is directly controlled to be switched on and off through the second relay valve 5. The air inlets of the second relay valve 5 and the third relay valve 6 are both connected with a second air cylinder 8, so that the second air cylinder 8 provides air sources for the second relay valve 5 and the third relay valve 6.
In one embodiment, the parking function subsystem 120 may directly employ the forward braking system of the vehicle, i.e., the braking system controlled by the brake pedal (service brake). As shown in fig. 1, the two-stage hill-holding system 100 further includes a brake valve 7, the brake valve 7 at least has a second driving state and a braking state, and the switching of the brake valve 7 from the second driving state to the braking state is realized by a brake pedal, that is, the state of the brake valve 7 corresponds to the position of the brake pedal, when the brake pedal is not pressed, the vehicle is in a driving state, the corresponding brake valve 7 is in the second driving state, and when the brake pedal is pressed, the vehicle brakes, and the brake valve 7 is in the braking state. Referring to fig. 3, the air outlet of the brake valve 7 is connected to the second control port 53 of the second relay valve 5, and when the brake valve 7 is in a braking state, the brake valve 7 controls the second relay valve 5 to connect with the air passage of the brake air chamber 9, so as to realize a braking function. In other words, the temporary stopping functional subsystem 120 can also be used for stepping on a brake pedal to realize braking during driving, in other words, the temporary stopping functional subsystem 120 directly adopts a preceding vehicle braking system controlled by the brake pedal, and the preceding vehicle braking system can also be controlled by the two-stage hill-holding manual valve 1 to realize the function that the vehicle is temporarily stopped and parked on a slope. An air inlet of the brake valve 7 is connected with a second air reservoir 8 to provide an air source for the brake valve 7.
The third relay valve 6 is mainly arranged aiming at meeting the anti-lock index requirement of the braking system of the preceding vehicle when the braking system of the passing vehicle of the vehicle is directly adopted as the temporary stop functional subsystem 120, and the third relay valve 6 is provided with an anti-lock electromagnetic valve which can realize the anti-lock function when a brake pedal is used for braking.
Referring to fig. 1, in one embodiment, two air cylinders, i.e., the first air cylinder 3 and the second air cylinder 8, may not be provided, but only one air cylinder may be provided, and the two-stage hill-holding manual valve 1, the first relay valve 2, the second relay valve 5, the third relay valve 6 and the brake valve 7 may be connected to one air cylinder. The arrangement of the two air cylinders is beneficial to the arrangement and wiring of the whole structure, so that the whole structure is more optimized.
The two-stage hill-holding system 100 of the invention can be applied to any vehicle type, preferably to an 8 x 4 type truck or a 6 x 4 type truck, and can provide strong braking force for the truck during hill-holding. The 8 x 4 type vehicle is a vehicle having four wheel axles, two of which are drive axles, and the 6 x 4 type vehicle is a vehicle having three wheel axles, two of which are drive axles.
In one embodiment, as shown in fig. 1, the two-stage hill-holding system 100 of the present invention is applied to an 8 × 4 truck, the brake chambers 9 are disposed on the wheels of the front two axles of the 8 × 4 truck, and the brake chambers 9 and the spring brake cylinders 10 are disposed up and down in fig. 1, that is, the brake chambers 9 and the spring brake cylinders 10 are disposed on the vehicle in bilateral symmetry, for example, the brake chamber 9 is disposed on the left wheel of one axle, and the brake chamber 9 is disposed on the right wheel of the axle. The brake chambers 9 are arranged on the front two wheel shafts of the 8 x 4 type truck, that is, the brake chambers 9 can be simultaneously used for the front vehicle brake controlled by the brake pedal, and the front vehicle brake of the general automobile is arranged on the wheel shaft at the front end of the automobile. As shown in fig. 1, brake chambers 9 are provided on the left and right wheels of the front two axles of an 8 × 4 truck, each brake chamber 9 corresponds to one wheel, and the number of the brake chambers 9 is four. Spring brake cylinders 10 are arranged on wheels of the rear two wheel shafts of the 8 x 4 type truck, and a mechanical parking brake of a common automobile is arranged on the wheel shaft at the rear end of the automobile. As shown in fig. 1, each spring brake cylinder 10 corresponds to one wheel, and the number of spring brake cylinders 10 is four.
As shown in fig. 1, there are two third relay valves 6, and the second relay valve 5 is connected to a brake chamber 9 on the left wheel of the 8 × 4 type truck through one of the third relay valves 6, and the second relay valve 5 is connected to a brake chamber 9 on the right wheel of the 8 × 4 type truck through the other third relay valve 6. The provision of two third relay valves 6 facilitates wiring and overall structural optimization.
In one embodiment, as shown in fig. 1, the dual-stage hill-holding system 100 further includes an indicator lamp 4, and in conjunction with fig. 3, the indicator lamp 4 is connected to the electrical interface 54 of the second relay valve 5 for indicating whether the parking function is turned on, for example, the indicator lamp 4 may be disposed at an instrument panel or a hand brake position, and when the hand brake is pulled, whether the hand brake is pulled to the position of the parking function may be determined by the indicator lamp 4.
The present invention also provides a vehicle including a dual stage hill holding system 100 as described above.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A dual stage hill hold system, comprising:
a two-stage hill-holding manual valve (1) having at least a first driving state, a parking state, and a temporary stop state;
the parking brake subsystem (110) comprises a first relay valve (2) and at least two spring brake cylinders (10), wherein a control port of the first relay valve (2) is connected with an air outlet of the double-stage slope-stopping manual valve (1), and an air outlet of the first relay valve (2) is connected with the spring brake cylinders (10);
the temporary stop function subsystem (120) comprises a second relay valve (5) and at least two brake air chambers (9), wherein a control port of the second relay valve (5) is connected with the other air outlet of the double-stage slope-stopping manual valve (1), and an air outlet of the second relay valve (5) is connected with the brake air chambers (9);
the air inlets of the two-stage slope-stopping manual valve (1), the first relay valve (2) and the second relay valve (5) are all connected with an air cylinder;
when the two-stage slope-stopping manual valve (1) is switched from the first driving state to the parking state, the two-stage slope-stopping manual valve (1) controls the first relay valve (2) to exhaust the spring brake cylinder (10), so that a parking brake function is realized;
when the double-stage slope-stopping manual valve (1) is switched from the parking state to the temporary stop state, the double-stage slope-stopping manual valve (1) controls the first relay valve (2) to exhaust the spring brake cylinder (10), so that a parking brake function is realized; meanwhile, the two-stage slope-stopping manual valve (1) controls the second relay valve (5) to inflate the brake air chamber (9), and the temporary stop function is achieved.
2. The dual stage hill hold system of claim 1 further comprising:
the brake valve (7) at least has a second driving state and a braking state, an air outlet of the brake valve (7) is connected with the other control port of the second relay valve (5), and when the brake valve (7) is switched from the second driving state to the braking state, the brake valve (7) controls the second relay valve (5) to inflate the brake air chamber (9) so as to realize a braking function.
3. The dual stage hill holding system of claim 1 wherein the dual stage hill holding system is applied to an 8 x 4 truck or a 6 x 4 truck.
4. The dual stage hill-holding system as claimed in claim 2, wherein the dual stage hill-holding system is applied to an 8 x 4 type truck, the 8 x 4 type truck comprises four axles, the brake chambers (9) are arranged on the wheels of the front two axles of the 8 x 4 type truck, and the spring brake cylinders (10) are arranged on the wheels of the rear two axles of the 8 x 4 type truck.
5. The dual stage hill hold system of claim 4 wherein the critical function subsystem (120) further comprises a third relay valve (6), the third relay valve (6) having an anti-lock solenoid valve disposed therein, the second relay valve (5) being connected to the brake chamber (9) through the third relay valve (6).
6. The dual stage hill-holding system according to claim 5, characterized in that the number of the third relay valves (6) is two, the second relay valve (5) being connected to the brake chamber (9) on the left wheel of the type 8 x 4 truck through one of the two third relay valves (6), the second relay valve (5) being connected to the brake chamber (9) on the right wheel of the type 8 x 4 truck through the other of the two third relay valves (6).
7. The dual stage hill-holding system of claim 6 wherein the gas cartridge comprises two, a first gas cartridge (3) and a second gas cartridge (8);
the air inlets of the two-stage slope-stopping manual valve (1) and the first relay valve (2) are connected to the first air cylinder (3);
and air inlets of the second relay valve (5), the brake valve (7) and the third relay valve (6) are connected to the second air reservoir (8).
8. The dual stage hill hold system of claim 1 further comprising:
the indicator lamp (4), the indicator lamp (4) with the electric interface (54) of second relay valve (5) is connected for instruct the function of moving just stopping whether open.
9. The two-stage hill-holding system according to claim 2, characterized in that the first relay valve (2) is arranged corresponding to a hand brake of a vehicle, and the brake valve (7) is arranged corresponding to a brake pedal of the vehicle.
10. A vehicle comprising a dual stage hill hold system as recited in any one of claims 1-9.
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| CN202110031957.2A CN112706733B (en) | 2021-01-11 | 2021-01-11 | Two-stage slope-parking system and vehicle |
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| CN202110031957.2A CN112706733B (en) | 2021-01-11 | 2021-01-11 | Two-stage slope-parking system and vehicle |
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| CN112706733A true CN112706733A (en) | 2021-04-27 |
| CN112706733B CN112706733B (en) | 2022-05-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684089A (en) * | 2022-05-25 | 2022-07-01 | 中汽北消(北京)应急装备科技有限公司 | Multifunctional composite braking system of large desert transport vehicle |
| CN115303248A (en) * | 2022-08-11 | 2022-11-08 | 一汽解放汽车有限公司 | Parking brake system, vehicle and control method |
| CN117841934B (en) * | 2023-12-28 | 2024-06-07 | 北京少仕科技有限公司 | Unmanned vehicle hydraulic braking system and working method thereof |
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| CN208053329U (en) * | 2018-03-21 | 2018-11-06 | 苏州普莱尔机械设备制造有限公司 | A kind of novel tour bus vehicle brake apparatus |
| CN108556830A (en) * | 2018-05-24 | 2018-09-21 | 湖南汽车工程职业学院 | A kind of controlled pneumatic brake system of car and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114684089A (en) * | 2022-05-25 | 2022-07-01 | 中汽北消(北京)应急装备科技有限公司 | Multifunctional composite braking system of large desert transport vehicle |
| CN115303248A (en) * | 2022-08-11 | 2022-11-08 | 一汽解放汽车有限公司 | Parking brake system, vehicle and control method |
| CN115303248B (en) * | 2022-08-11 | 2023-06-23 | 一汽解放汽车有限公司 | Parking brake system, vehicle and control method |
| CN117841934B (en) * | 2023-12-28 | 2024-06-07 | 北京少仕科技有限公司 | Unmanned vehicle hydraulic braking system and working method thereof |
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