CN210101610U - Braking system and vehicle - Google Patents
Braking system and vehicle Download PDFInfo
- Publication number
- CN210101610U CN210101610U CN201920551169.4U CN201920551169U CN210101610U CN 210101610 U CN210101610 U CN 210101610U CN 201920551169 U CN201920551169 U CN 201920551169U CN 210101610 U CN210101610 U CN 210101610U
- Authority
- CN
- China
- Prior art keywords
- brake
- pump
- service
- parking
- gas
- 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.)
- Active
Links
Images
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model provides a braking system and vehicle, braking system includes: a brake for providing a braking force; the pneumatic jacking pump is connected with the brake and used for driving the brake to brake or release the brake; the gas storage device is connected with the gas-top liquid pump through a gas circuit and is used for driving the gas-top liquid pump; and the brake control valve is arranged on the gas path between the gas storage device and the gas-lift liquid pump and is used for controlling the on-off state or flow of the gas path. Used the technical scheme provided by the utility model, convert gas storage device's atmospheric pressure and amplification through the gas cap liquid pump for the oil pressure, through oil pressure drive stopper, can obtain great braking force, gas storage device's volume is less simultaneously, need not set up extra hydraulic power source and drives hydraulic spring, can practice thrift the space of arranging of systems such as vehicle suspension, steering effectively, and gas cap liquid system low cost can effectively reduce vehicle manufacturing cost.
Description
Technical Field
The utility model relates to a vehicle braking technical field particularly, relates to a braking system and a vehicle.
Background
Generally, parking brake systems commonly used in vehicles include air spring type parking brake, mechanical pull-cord type parking brake, full hydraulic spring type parking brake, and electronic parking brake. The above-mentioned existing braking structures have the following disadvantages, respectively:
1. the pneumatic spring type parking brake system has the advantages that the brake actuating mechanism is a spring brake chamber, the overall dimension is large, the brake actuating mechanism is required to be arranged at the wheel edge, and the large space is occupied, so that the arrangement of other systems such as a suspension, a steering system and the like can be influenced;
2. the braking force provided by the mechanical stay-supported parking brake is limited, so that the mechanical stay-supported parking brake is not suitable for the vehicle type with larger overall mass;
3. the full hydraulic spring type parking brake needs a hydraulic power source provided by a vehicle, so that the hydraulic power source needs to be additionally arranged on the vehicle, and the cost is additionally increased;
4. electronic parking is expensive and provides limited braking force, and is currently used only for some high-grade passenger vehicles.
Therefore, there is a need for a braking system that can provide higher braking force without increasing space usage and cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving at least one of the technical problem that exists among prior art or the correlation technique
To this end, a first aspect of the present invention provides a brake system.
A second aspect of the present invention provides a vehicle.
In view of this, a first aspect of the present invention provides a brake system, including: a brake for providing a braking force; the pneumatic jacking pump is connected with the brake and used for driving the brake to brake or release the brake; the gas storage device is connected with the gas-top liquid pump through a gas circuit and is used for driving the gas-top liquid pump; and the brake control valve is arranged on the gas path between the gas storage device and the gas-lift liquid pump and is used for controlling the on-off state or flow of the gas path.
In the technical scheme, the brake system is a pneumatic-hydraulic brake system and comprises a gas storage device, a brake control valve, a pneumatic-hydraulic pump and a brake; the air storage device provides a power source for the air-jet liquid pump, the brake control valve controls the air storage device to be communicated with or isolated from the air-jet liquid pump, and the air-jet liquid pump converts and amplifies air pressure of the air storage device into oil pressure which is output to the brake so as to control the brake to brake. Applied the technical scheme provided by the utility model, convert gas storage device's atmospheric pressure and amplification through the gas cap liquid pump and be the oil pressure, through oil pressure drive stopper, can obtain great braking force, gas storage device's volume is less simultaneously, need not set up extra hydraulic power source and drive hydraulic spring, can practice thrift the space of arranging of systems such as vehicle suspension, steering effectively, and gas cap liquid system low cost can effectively reduce vehicle manufacturing cost. The communication relation between the gas storage device and the gas-lift pump is controlled through the brake control valve, the finally output oil pressure can be flexibly adjusted, and then the adjustment of the braking force is realized, so that the comfort of braking is improved.
Specifically, the gas storage device is a gas storage cylinder, and the original gas storage cylinder on the vehicle can be preferably used, so that the space is saved, and the implementation is easy. When the braking system starts braking, the control switch controls the air storage cylinder to be communicated with the gas-over-liquid pump, high-pressure gas stored in the air storage cylinder enters the gas-over-liquid pump along the communicated gas path, the gas-over-liquid pump converts the gas pressure of the gas path into hydraulic pressure in the liquid path and outputs the hydraulic pressure to the brake, and a friction plate of the brake is driven to rub the brake disc so as to convert the kinetic energy of the vehicle into internal energy and realize the braking of the vehicle.
Additionally, the utility model provides an among the above-mentioned technical scheme braking system can also have following additional technical characterstic:
in the above technical solution, further, the brake specifically includes: the brake includes parking brake, and the pneumatic ram pump includes parking pneumatic ram pump, and brake control valve includes parking brake control valve, and gas storage device is connected with parking pneumatic ram pump through the gas circuit, and parking brake control valve sets up on the gas circuit between gas storage device and the parking pneumatic ram pump, and parking pneumatic ram pump is connected with parking brake.
In this solution, the brake is a parking brake, and optionally, the parking brake includes a brake body, a brake spring connected to the brake body, a piston device connected to the brake spring and movably disposed on the brake body, and a friction plate connected to the piston device. When a vehicle starts parking braking, the parking braking control valve is stopped, the air passage between the air storage device and the parking air-assisted hydraulic pump is disconnected, the parking air-assisted hydraulic pump does not output pressure to the parking brake, at the moment, the piston device applies force to the direction of the brake disc under the action of elastic potential energy of the braking spring, at the moment, the friction plate is tightly attached to the brake disc under the pushing of the piston device, friction force is generated between the friction plate and the brake disc, the brake disc and a corresponding wheel are prevented from rotating, and the parking braking is realized. When the parking brake is released, the parking brake control valve is switched on, the air channel between the air storage device and the parking air-assisted liquid pump is communicated, the air-assisted liquid pump sends high-pressure liquid into the brake, the high-pressure liquid pushes the piston device to compress the brake spring, so that the friction plate is separated from the brake disc, no friction force is generated between the friction plate and the brake disc, and the parking brake is released.
In any of the above technical solutions, further, the brake further includes a service brake, the air-assisted hydraulic pump includes a service air-assisted hydraulic pump, the brake control valve includes a service brake control valve, the air storage device is connected with the service air-assisted hydraulic pump through an air passage, the parking brake control valve is disposed on the air passage between the air storage device and the service air-assisted hydraulic pump, and the service air-assisted hydraulic pump is connected with the service brake; the brake system further includes: the service brake pump is connected with the service brake to drive the service brake to perform service braking; and the brake pedal is arranged on the service brake pump, and when the brake pedal is triggered, the service brake pump drives the service brake to provide service brake.
In the technical scheme, the brake further comprises a service brake which is arranged on a front axle and/or a rear axle of the vehicle and used for braking wheels of the front axle and/or wheels of the rear axle of the vehicle. The brake system further comprises a service brake pump and a brake pedal, when a vehicle driver steps on the brake pedal, the service brake pump connected with the brake pedal starts to work, the service brake pump outputs pressure to the service brake to press a friction plate of the service brake to be attached to a brake disc of a corresponding wheel, at the moment, sliding friction is generated between the friction plate and the brake disc, and kinetic energy of the vehicle is converted into internal energy to realize service braking of the vehicle. Furthermore, the air-assisted hydraulic pump comprises a driving air-assisted hydraulic pump communicated with the air storage device, the driving air-assisted hydraulic pump is connected with a driving brake, and a driving brake control valve is arranged for controlling the communication between the air storage device and the first air-assisted hydraulic pump.
The auxiliary brake module is composed of a service air-lift pump and a service brake control valve, when the service brake pump fails or hydraulic pressure provided by the service brake pump is not enough to brake the vehicle, or the vehicle needs emergency braking, when a driver manually opens the auxiliary brake mode, the service brake control valve is opened, the service air-lift pump is communicated with the air storage device, air pressure provided by the air storage device is converted and amplified into hydraulic pressure to be output to the service brake, braking force is provided through the service air-lift pump, the brake effect is guaranteed, and the risk of brake failure is effectively reduced.
In any of the above technical solutions, further, the braking system further includes a shuttle valve disposed among the service brake pump, the service air-lift pump, and the service brake, an outlet of the shuttle valve is connected to the service brake, a first inlet of the shuttle valve is connected to the service brake pump, and a second inlet of the shuttle valve is connected to the service air-lift pump.
In the technical scheme, the brake system further comprises a shuttle valve arranged among a service brake pump, a service air-lift pump and a service brake, when the service brake pump normally outputs hydraulic pressure, the shuttle valve is communicated with the service brake pump and the service brake, and the service brake is driven by the service brake pump to brake the vehicle; when the brake pump can not normally output hydraulic pressure, the shuttle valve is communicated with the driving air-lift pump and the driving brake under the driving of the driving air-lift pump, and the driving brake is driven by the driving air-lift pump to brake the vehicle. By arranging the shuttle valve to isolate the driving air-lift pump and the driving brake pump, the interference between the driving brake system and the auxiliary brake system can be effectively avoided, and the stability and the reliability of the brake system are improved.
In any of the above technical solutions, further, the braking system further includes: and the parking pressure sensor is arranged between the parking gas-cap liquid pump and the parking brake and is used for detecting the outlet pressure value of the parking gas-cap liquid pump.
In any of the above technical solutions, further, the braking system further includes: and the brake controller is connected with the parking pressure sensor and used for acquiring the outlet pressure value of the parking airlock liquid pump and adjusting the output power of the parking airlock liquid pump according to the outlet pressure value of the parking airlock liquid pump.
In any of the above technical solutions, further, the braking system further includes: and the driving pressure sensor is arranged on the driving brake pump and used for detecting the outlet pressure value of the driving brake pump.
In any of the above technical solutions, further, the braking system further includes: and the brake controller is connected with the service pressure sensor and is also used for acquiring the outlet pressure value of the service brake pump, and the service brake control valve is opened based on the condition that the outlet pressure value of the service brake pump is smaller than the pressure threshold value.
In this technical scheme, be provided with parking pressure sensor between gas cap liquid pump and the stopper for detect the exit pressure value of parking gas cap liquid pump between gas cap liquid pump and the stopper, braking system still includes brake control ware, and brake control ware receives the exit pressure value of parking gas cap liquid pump, adjusts the output of gas cap liquid pump according to the exit pressure value of parking gas cap liquid pump. Specifically, if the outlet pressure value of the parking airlock liquid pump is too high, the comfort level of vehicle braking is reduced due to too strong vehicle braking force, and the insufficient braking force and poor braking effect may be caused due to too low parking pressure value. Therefore, the output power of the air-assisted liquid pump is flexibly adjusted according to the outlet pressure value of the parking air-assisted liquid pump, so that the braking effect of the vehicle is ensured, and the comfort level of the vehicle brake is effectively improved. Furthermore, the brake pump is also provided with an outlet pressure sensor of the driving air cap liquid pump, and the outlet pressure sensor is used for detecting the driving pressure value output by the brake pump. When the driving pressure value is smaller than the preset pressure threshold value, the fault of an outlet pressure pump of the driving air-top liquid pump is judged, the fault is not enough to drive the brake to realize braking, the brake controller controls the switch device to be switched on at the moment, and the brake is driven by the auxiliary braking system, namely the parking air-top liquid pump and the driving air-top liquid pump, so that the vehicle brake cannot lose efficacy, and the reliability of the braking system is improved.
In any of the above technical solutions, further, the brake control valve is a mechanical brake valve or an electromagnetic push button brake valve.
In the technical scheme, the brake control valve can be a mechanical brake valve, and the control switch is operated by a mechanical handle or other mechanical structures to execute the opening and closing actions. Or, the brake control valve can be an electromagnetic brake valve, and the electromagnetic brake valve receives a control command through a corresponding trigger switch (such as a key, a touch screen or a switch), and can also receive the control command of the brake controller to execute a switch action.
A second aspect of the present invention provides a vehicle, including a brake system according to any one of the above-mentioned technical solutions, and therefore, the vehicle includes all the advantageous effects of the brake system according to any one of the above-mentioned technical solutions.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic structural view of a brake system according to an embodiment of the invention;
fig. 2 shows a schematic view of an assisted parking control of a vehicle according to an embodiment of the present invention.
Wherein, the corresponding relationship between the reference numbers and the component names in fig. 1 is:
10 parking brake modules, 102 air storage devices, 104 parking brake control valves, 106 parking air-over-liquid pumps, 108 parking brakes, 110 parking pressure sensors, 20 service brake modules, 202 service brakes, 204 brake pedals, 206 service brake pumps, 30 auxiliary brake modules, 302 service air-over-liquid pumps, 304 service brake control valves and 306 shuttle valves.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The braking system and the vehicle according to some embodiments of the present invention are described below with reference to fig. 1 and 2.
In an embodiment of the first aspect of the present invention, as shown in fig. 1, there is provided a brake system, including: a brake for providing a braking force; the pneumatic jacking pump is connected with the brake and used for driving the brake to brake or release the brake; the gas storage device 102 is connected with the gas-top liquid pump through a gas circuit, and the gas storage device 102 is used for driving the gas-top liquid pump; and the brake control valve is arranged on the air path between the air storage device 102 and the air-assisted liquid pump and is used for controlling the on-off state or flow of the air path. In this embodiment, the brake system is a pneumatic hydraulic brake system, which includes a gas storage device 102, a brake control valve, a pneumatic hydraulic pump, and a brake; the gas storage device 102 provides a power source for the gas-lift pump, the brake control valve controls the communication or the isolation between the gas storage device 102 and the gas-lift pump, and the gas-lift pump converts and amplifies the air pressure of the gas storage device 102 into oil pressure which is output to the brake so as to control the brake to brake. Applied the technical scheme provided by the utility model, convert the atmospheric pressure of gas storage device 102 and enlarge for the oil pressure through the gas cap liquid pump, through oil pressure drive stopper, can obtain great braking force, gas storage device 102's volume is less simultaneously, need not set up extra hydraulic power source and drives hydraulic spring, can practice thrift the space of arranging of systems such as vehicle suspension, steering effectively, and gas cap liquid system low cost, can effectively reduce vehicle manufacturing cost. The communication relation between the gas storage device 102 and the gas-lift pump is controlled through the brake control valve, the finally output oil pressure can be flexibly adjusted, and then the adjustment of the braking force is realized, so that the comfort of braking is improved.
Specifically, the gas storage device 102 is a gas storage cylinder, and preferably, the gas storage cylinder can be an original gas storage cylinder on the vehicle, which saves space and is easy to implement. When the braking system starts braking, the control switch controls the air storage cylinder to be communicated with the gas-over-liquid pump, high-pressure gas stored in the air storage cylinder enters the gas-over-liquid pump along the communicated gas path, the gas-over-liquid pump converts the gas pressure of the gas path into hydraulic pressure in the liquid path and outputs the hydraulic pressure to the brake, and a friction plate of the brake is driven to rub the brake disc so as to convert the kinetic energy of the vehicle into internal energy and realize the braking of the vehicle.
In an embodiment of the present invention, further, as shown in fig. 1, the brake specifically includes: the brake comprises a parking brake 108, the pneumatic-ram pump comprises a parking pneumatic-ram pump 106, the brake control valve comprises a parking brake control valve 104, the air storage device 102 is connected with the parking pneumatic-ram pump 106 through an air passage, the parking brake control valve 104 is arranged on the air passage between the air storage device 102 and the parking pneumatic-ram pump 106, and the parking pneumatic-ram pump 106 is connected with the parking brake 108.
In this embodiment, the brake is a parking brake 108, and optionally, the parking brake 108 includes a brake body, a brake spring connected to the brake body, a piston device connected to the brake spring and movably disposed to the brake body, and a friction plate connected to the piston device. When the vehicle starts parking braking, the parking braking control valve 104 is closed, the air passage between the air storage device 102 and the parking air-jet pump 106 is disconnected, the parking air-jet pump 106 does not output pressure to the parking brake 108, at the moment, the piston device applies force to the direction of the brake disc under the action of elastic potential energy of the brake spring, at the moment, the friction plate is tightly attached to the brake disc under the pushing of the piston device, friction force is generated between the friction plate and the brake disc, the brake disc and a corresponding wheel are prevented from rotating, and the parking braking is realized. When the parking brake is released, the parking brake control valve 104 is conducted, the air passage between the air storage device 102 and the parking air-assisted hydraulic pump 106 is communicated, the air-assisted hydraulic pump sends high-pressure liquid into the brake, the high-pressure liquid pushes the piston device to compress the brake spring, so that the friction plate is separated from the brake disc, no friction force is generated between the friction plate and the brake disc, and the parking brake is released.
In an embodiment of the present invention, further, as shown in fig. 1, the brake further includes a service brake 202, the air-assisted hydraulic pump includes a service air-assisted hydraulic pump 302, the brake control valve includes a service brake control valve 304, the air storage device 102 is connected to the service air-assisted hydraulic pump 302 through an air passage, the parking brake control valve 104 is disposed on the air passage between the air storage device 102 and the service air-assisted hydraulic pump 302, and the service air-assisted hydraulic pump 302 is connected to the service brake 202; the brake system further includes: a service brake pump 206 connected with the service brake 202 to drive the service brake 202 to perform service braking; a brake pedal 204 disposed on the service brake pump 206, wherein when the brake pedal 204 is activated, the service brake pump 206 actuates the service brake 202 to provide service braking.
In this embodiment, the brakes further comprise service brakes 202, which are provided at the front and/or rear axle of the vehicle for braking the front and/or rear axle wheels of the vehicle. The brake system further comprises a service brake pump 206 and a brake pedal 204, when a driver of the vehicle steps on the brake pedal 204, and the brake pedal 204 is triggered, the service brake pump 206 connected with the brake pedal 204 starts to work, the service brake pump 206 outputs pressure to the service brake 202 to press a friction plate of the service brake 202 to be attached to a brake disc of a corresponding wheel, at the moment, sliding friction is generated between the friction plate and the brake disc, and kinetic energy of the vehicle is converted into internal energy to realize service braking of the vehicle. Further, the pneumatic topping off pump comprises a service pneumatic topping off pump 302 in communication with the air reservoir 102, connected to the service brake 202, and a service brake control valve 304 is provided for controlling the communication between the air reservoir 102 and the first pneumatic topping off pump.
Specifically, the service air cap pump 302 and the service brake control valve 304 form an auxiliary brake module, when the service brake pump 206 fails or the hydraulic pressure provided by the service brake pump 206 is not enough to brake the vehicle, or the vehicle needs emergency braking, and when the driver manually starts the auxiliary brake mode, the service brake control valve 304 is opened, the service air cap pump 302 is communicated with the air storage device 102, converts and amplifies the air pressure provided by the air storage device 102 into hydraulic pressure to be output to the service brake 202, so that the service air cap pump 302 provides braking force, the braking effect is ensured, and the risk of brake failure is effectively reduced.
In an embodiment of the present invention, further, as shown in fig. 1, the braking system further includes a shuttle valve 306 disposed between the service brake pump 206, the service air top liquid pump 302 and the service brake 202, an outlet of the shuttle valve 306 is connected to the service brake 202, a first inlet of the shuttle valve 306 is connected to the service brake pump 206, and a second inlet of the shuttle valve 306 is connected to the service air top liquid pump 302.
In this embodiment, the braking system further includes a shuttle valve 306 disposed among the service brake pump 206, the service air top pump 302 and the service brake 202, when the service brake pump 206 outputs hydraulic pressure normally, the shuttle valve 306 communicates with the service brake pump 206 and the service brake 202, and the service brake 202 is driven by the service brake pump 206 to brake the vehicle; when the brake pump cannot normally output hydraulic pressure, the shuttle valve 306 is communicated with the service air-lift pump 302 and the service brake 202 under the driving of the service air-lift pump 302, and the service brake 202 is driven by the service air-lift pump 302 to brake the vehicle. By arranging the shuttle valve 306 to isolate the service air-lift pump 302 and the service brake pump 206, interference between a service brake system and an auxiliary brake system can be effectively avoided, and the stability and reliability of the brake system are improved.
In an embodiment of the present invention, further, as shown in fig. 1, the braking system further includes: the parking pressure sensor 110 is arranged between the air-jet ram pump and the brake, and the parking pressure sensor 110 is used for detecting the outlet pressure value of the parking air-jet ram pump 106; the driving pressure sensor is arranged on the brake pump and used for detecting the outlet pressure value of the driving air-lift liquid pump 302; the brake controller is connected with the parking pressure sensor 110 and the driving pressure sensor and is used for acquiring the outlet pressure value of the parking gas-lift liquid pump 106 and adjusting the output power of the gas-lift liquid pump according to the outlet pressure value of the parking gas-lift liquid pump 106; and acquiring an outlet pressure value of the traveling crane gas cap liquid pump 302, and starting the control switch based on the outlet pressure value of the traveling crane gas cap liquid pump 302 being smaller than a pressure threshold value.
In this embodiment, a parking pressure sensor 110 is disposed between the air-over-gas liquid pump and the brake, and is configured to detect an outlet pressure value of the parking air-over-gas liquid pump 106 between the air-over-gas liquid pump and the brake, and the brake system further includes a brake controller, where the brake controller receives the outlet pressure value of the parking air-over-gas liquid pump 106, and adjusts output power of the air-over-gas liquid pump according to the outlet pressure value of the parking air-over-gas liquid pump 106. Specifically, if the outlet pressure value of the parking air-lift pump 106 is too high, the comfort level of the vehicle brake may be reduced due to too strong vehicle brake force, and the brake force may be insufficient due to too low parking pressure value, resulting in poor brake effect. Therefore, the output power of the pneumatic top liquid pump is flexibly adjusted according to the outlet pressure value of the parking pneumatic top liquid pump 106, so that the vehicle braking comfort can be effectively improved while the vehicle braking effect is ensured. Further, the brake pump is further provided with an outlet pressure sensor of the service air-lift pump 302, which is used for detecting a service pressure value output by the brake pump. When the driving pressure value is smaller than the preset pressure threshold value, it is determined that the outlet pressure pump of the driving air-over liquid pump 302 is in fault and is not enough to drive the brake to realize braking, at the moment, the brake controller controls the switch device to be switched on, and the brake is driven by the auxiliary braking system, namely the parking air-over liquid pump 106 and the driving air-over liquid pump 302, so that the vehicle brake is ensured not to fail, and the reliability of the braking system is improved.
In an embodiment of the present invention, further, the brake control valve is a mechanical brake valve or an electromagnetic push button brake valve.
In this embodiment, the brake control valve may be a mechanical brake valve, and the brake control valve may be operated by a mechanical handle or other mechanical structure to perform the switching action. Or, the brake control valve can be an electromagnetic brake valve, and the electromagnetic brake valve receives a control command through a corresponding trigger switch (such as a key, a touch screen or a switch), and can also receive the control command of the brake controller to execute a switch action.
In an embodiment of the present invention, further, as shown in fig. 1, the braking system includes a parking braking module 10, a service braking module 20 and an auxiliary braking module 30, the parking braking module 10 includes an air reservoir, a hand brake valve, a pneumatic hydraulic master cylinder, a pressure sensor, a parking brake, a pipeline, etc.; the air cylinder provides a power source for the gas cap liquid master cylinder, the gas cap liquid master cylinder converts and amplifies air pressure into oil pressure which is output to the brake, and the on-off of the air path is controlled through the hand brake valve; the brake is a hydraulic spring type brake, and when no pressure exists, a brake spring pops up to push the friction plate to tightly hold the brake disc so as to realize vehicle parking; when the pressure reaches a certain value, the brake spring is compressed, the friction plate is separated from the brake disc, and the parking is released. The parking brake can be arranged at the wheel edge, the input end, the output end and the like of the rear axle main reducer. The hand brake valve is used for controlling the on-off of the air path. The manual brake valve can be in a handle mechanical type or a button electromagnetic type, the state of the brake valve can be output to a driving controller and a vehicle instrument, and the button electromagnetic type brake valve can also receive the instruction of the controller to perform switching action; and a pressure sensor is arranged in an oil path from the gas cap hydraulic master cylinder to the brake, and can detect the oil pressure of the brake and output the oil pressure to the controller.
The service brake module 20 comprises a brake pedal and master cylinder assembly, a front axle and rear axle service brake, a pipeline and the like; when braking, the brake pedal is stepped to push the master cylinder and provide oil pressure to the service brake. Pneumatic power assistance or hydraulic power assistance can be provided to the brake pedal depending on the vehicle conditions. Wherein the master cylinder has two chambers, respectively to the front axle and the rear axle brake.
The auxiliary brake module 30 includes a switch device, a pneumatic hydraulic master cylinder, a shuttle valve, a pipeline, etc., and can be provided with an auxiliary brake module of a front axle, an auxiliary brake module of a rear axle, and auxiliary brake modules of a front axle and a rear axle according to actual requirements. The air cylinder provides power source for the gas cap liquid master cylinder, and the gas cap liquid master cylinder converts air pressure into oil pressure and outputs the oil pressure to the service brake. The auxiliary braking module and the service braking module are connected through a shuttle valve, and mutual influence of the two modules is avoided. The switch device is used for controlling the on-off of the air path, and can be a mechanical hand brake valve and can be manually operated. An electronic brake valve can be adopted, and the electronic brake valve can be manually operated and can also receive the command of a controller to perform opening and closing actions. The opening degree of the electronic hand brake valve can be changed linearly or in a curve mode according to voltage or current signals, and therefore the comfort of auxiliary braking is improved. When the driving brake module fails, a driver can use the auxiliary brake module as emergency brake; in the case of a parking brake on a slope with a large gradient, if the braking force provided by the parking brake module is not sufficient for a reliable parking brake, the driver can actuate the auxiliary brake module as a parking assist in order to provide a larger parking braking force.
In an embodiment of the second aspect of the present invention, there is provided a vehicle comprising a braking system as in any of the embodiments described above, whereby the vehicle comprises all the benefits of the braking system as in any of the embodiments described above.
In an embodiment of the present invention, a vehicle having the brake system of the above embodiment has an automatic auxiliary parking function, specifically: when the vehicle is in the state that the parking brake module is resident in the vehicle, if the wheel rolls (namely the vehicle speed signal is not 0) and no accelerator signal exists, the controller can read the hand brake valve signal, the vehicle speed signal and the accelerator signal of the parking brake module, and after logical judgment, the controller outputs an instruction to control the switch device of the auxiliary brake module to be opened so as to carry out automatic auxiliary parking.
After the automatic auxiliary parking, one or more of the following conditions occur, the switching device is closed, and the auxiliary brake is released:
a. manually closing the switching device;
b. manually closing a brake valve of the parking brake;
c. the throttle signal is not 0.
In an embodiment of the present invention, the vehicle having the brake system of the above embodiment may further have the following control functions:
1) the parking brake module can be programmed according to an accelerator signal, a vehicle speed signal and the like, and the opening and closing of a hand brake valve in the parking brake module are controlled, so that the vehicle is controlled to be started or released from parking.
2) A remote control device can be added, and the remote control device is used for controlling the opening and closing of a hand brake valve in the parking brake module, so that remote control of parking brake is realized.
3) The remote control device can be used for remotely controlling the switch device in the auxiliary braking module to realize remote control service braking.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically defined, the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A braking system, characterized in that the braking system comprises:
a brake for providing a braking force;
the pneumatic jacking pump is connected with the brake and used for driving the brake to brake or release the brake;
the gas storage device is connected with the gas-top liquid pump through a gas circuit and is used for driving the gas-top liquid pump;
and the brake control valve is arranged on the gas path between the gas storage device and the gas-lift liquid pump and is used for controlling the on-off state or flow of the gas path.
2. The brake system of claim 1, wherein the brake comprises a parking brake, the pneumatic-ram pump comprises a parking pneumatic-ram pump, the brake control valve comprises a parking brake control valve, the air reservoir is connected to the parking pneumatic-ram pump via an air path, the parking brake control valve is disposed on the air path between the air reservoir and the parking pneumatic-ram pump, and the parking pneumatic-ram pump is connected to the parking brake.
3. A brake system according to claim 2, wherein the brake further comprises a service brake, the air-over-pressure pump comprises a service air-over-pressure pump, the brake control valve comprises a service brake control valve, the air reservoir is connected with the service air-over-pressure pump through an air passage, the parking brake control valve is disposed on the air passage between the air reservoir and the service air-over-pressure pump, and the service air-over-pressure pump is connected with the service brake;
the brake system further includes:
the service brake pump is connected with the service brake to drive the service brake to perform service braking;
and the brake pedal is arranged on the service brake pump, and when the brake pedal is triggered, the service brake pump drives the service brake to provide service brake.
4. The brake system of claim 3, further comprising a shuttle valve disposed between the service brake pump, the service air cap pump, and the service brake, wherein an outlet of the shuttle valve is coupled to the service brake, a first inlet of the shuttle valve is coupled to the service brake pump, and a second inlet of the shuttle valve is coupled to the service air cap pump.
5. The braking system of claim 4, further comprising:
and the parking pressure sensor is used for detecting the outlet pressure value of the parking gas-cap liquid pump.
6. The braking system of claim 5, further comprising:
and the brake controller is connected with the parking pressure sensor and used for acquiring the outlet pressure value of the parking airlock liquid pump and adjusting the output power of the parking airlock liquid pump according to the outlet pressure value of the parking airlock liquid pump.
7. The braking system of claim 6, further comprising:
and the driving pressure sensor is arranged on the driving brake pump and used for detecting the outlet pressure value of the driving brake pump.
8. The braking system of claim 7, further comprising:
the brake controller is connected with the service pressure sensor, the controller is also used for obtaining the outlet pressure value of the service brake pump, and the service brake control valve is opened based on the outlet pressure value of the service brake pump being smaller than the pressure threshold value.
9. A brake system according to any one of claims 1 to 8, wherein the brake control valve is:
a mechanical brake valve or an electromagnetic brake valve.
10. A vehicle, characterized in that the vehicle comprises:
a braking system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920551169.4U CN210101610U (en) | 2019-04-22 | 2019-04-22 | Braking system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920551169.4U CN210101610U (en) | 2019-04-22 | 2019-04-22 | Braking system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210101610U true CN210101610U (en) | 2020-02-21 |
Family
ID=69536949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920551169.4U Active CN210101610U (en) | 2019-04-22 | 2019-04-22 | Braking system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210101610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927693A (en) * | 2019-04-22 | 2019-06-25 | 三一汽车制造有限公司 | Braking system and vehicle |
-
2019
- 2019-04-22 CN CN201920551169.4U patent/CN210101610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927693A (en) * | 2019-04-22 | 2019-06-25 | 三一汽车制造有限公司 | Braking system and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108290563B (en) | Vehicle electropneumatic parking brake device with additional control loop | |
| US5544948A (en) | Service and emergency brake system having a master cylinder with a travel simulator gas-filled spring | |
| US9157543B2 (en) | Parking brake device | |
| CN108349477B (en) | Electronic pneumatic parking brake device with redundant pneumatic control | |
| US5350225A (en) | Road vehicle brake-pressure control device | |
| CN102015392B (en) | Hydraulic vehicle braking system | |
| US20060108860A1 (en) | Brake energy recovery system | |
| US20090309413A1 (en) | Valve unit, electro-pneumatic brake control device having a valve unit of said type for controlling a parking brake, vehicle brake system having a brake control device of said type and vehicle having a brake system of said type | |
| US20080258545A1 (en) | Brake System for Motor Vehicles | |
| US8240780B1 (en) | Hydraulic brake booster | |
| CN105035058B (en) | Electric parking brake | |
| CN101263033A (en) | Motor vehicle braking system | |
| JP2009507714A (en) | Brake system for automobile | |
| US5118165A (en) | Electro-pneumatic spring and service brake actuator | |
| CN110901620B (en) | Control valve, electronically controllable brake system and method for controlling said system | |
| CN102120450A (en) | Main brake valve with electronic-control pneumatic-control dual-circuit signals | |
| EP2310239A2 (en) | Brake assembly for a vehicle | |
| CN110901621B (en) | Control valve, electronically controllable brake system and method for controlling said system | |
| CN210101610U (en) | Braking system and vehicle | |
| JPH03135870A (en) | Back-up brake activating system and valyes used for said system | |
| WO2015022066A2 (en) | Electro-pneumatic parking brake assembly | |
| CN109927693A (en) | Braking system and vehicle | |
| SU795446A3 (en) | Pneumocontrolled valve of car braking system | |
| JP4255038B2 (en) | Brake control system with slope start assist device and electromagnetic dual relay valve used in this system | |
| CN103260971A (en) | Pressure transmission system for vehicle, power-assisted braking system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221104 Address after: 413062 Floor 3, No. 1 Factory Building, Sany Zhongyang Industrial Park, East New District, Yuxiangshan Street, Yiyang City, Hunan Province (101, Shiba Village, Henglongqiao Town) Patentee after: Hunan Province Ground Unmanned Equipment Engineering Research Center Co.,Ltd. Address before: 410100 31 industrial city, Changsha economic and Technological Development Zone, Hunan Patentee before: Sany Automobile Manufacturing Co.,Ltd. |
|
| TR01 | Transfer of patent right |