CN112208536B - Slope parking device, slope parking method and vehicle - Google Patents
Slope parking device, slope parking method and vehicle Download PDFInfo
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- CN112208536B CN112208536B CN202011034990.2A CN202011034990A CN112208536B CN 112208536 B CN112208536 B CN 112208536B CN 202011034990 A CN202011034990 A CN 202011034990A CN 112208536 B CN112208536 B CN 112208536B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
- B60W30/18118—Hill holding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2300/00—Indexing codes relating to the type of vehicle
- B60W2300/12—Trucks; Load vehicles
- B60W2300/125—Heavy duty trucks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/18—Braking system
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Abstract
The application relates to a stay slope device, stay slope method and vehicle relates to car technical field, and this stay slope device is used for installing on treating promoting the vehicle, and this stay slope device includes: the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air storage cylinder of the vehicle to be lifted through an air inlet pipeline; the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve; the on-off solenoid valve is configured such that the air chamber of each front axle brake is in communication with the parking brake air reservoir when in the on state, and the air chamber of each front axle brake is blocked from the parking brake air reservoir when in the off state. On the basis of the existing hand brake for controlling the rear axle brake, the parking brake is added based on the service brake of the front axle brake, the parking capacity of the whole vehicle is increased, and the safe slope parking of the super-heavy vehicle is realized.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a slope parking device, a slope parking method and a vehicle.
Background
When the vehicle runs on a southwest mountain area, the slope is large and long, after the vehicle runs on the road section for a long time, the brake can be thermally degenerated, the efficiency is reduced, the slope-retaining capacity of the vehicle is also reduced, in closed operation places such as mining plants and capital construction, the vehicle is not limited by forced load, the whole vehicle is overloaded seriously, the vehicle is often required to be queued for unloading on the slope, and after the slope-retaining capacity of the vehicle is reduced, the slope-retaining performance of the vehicle cannot meet the requirements of users.
Therefore, in order to meet the working conditions, the slope-holding capacity of the whole vehicle is urgently needed to be improved, and the vehicle can be stopped and smoothly started on a slope.
Disclosure of Invention
The application provides a slope parking device, a slope parking method and a vehicle, on the basis that a rear axle brake is controlled through a conventional hand brake, a front axle brake-based service brake is added to participate in parking brake, the purpose of increasing the parking capacity of the whole vehicle is achieved, and safe slope parking of a super-heavy vehicle is achieved.
In a first aspect, the present application provides a hill-holding device for mounting on a vehicle to be lifted, the hill-holding device comprising:
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the hill-holding device further comprises:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder; wherein the content of the first and second substances,
the on-off electromagnetic valve is configured to be in a connection state, the air chamber of each front axle brake is communicated with the parking brake air cylinder, and in an off state, the passage of the air chamber of each front axle brake and the parking brake air cylinder is cut off;
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage of the air chamber of each front axle brake and the foot brake valve is cut off;
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in a on state when the manual valve is in the off state.
In a second aspect, the present application provides a hill-holding method, based on the hill-holding device in the first aspect, for improving the hill-holding capacity of a vehicle to be lifted, the method comprising the steps of:
when a rear axle brake of the vehicle to be lifted works, the on-off type electromagnetic valve is controlled to enter a connected state through a manual switch;
high-pressure gas of a parking brake gas cylinder enters a gas chamber of a front axle brake of the vehicle to be lifted;
when the rear axle brake of the vehicle to be lifted stops working, the on-off type electromagnetic valve is controlled to enter an off state through the manual switch;
the hill-holding method further comprises the following steps:
when the rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off electromagnetic valve to enter the off state, the vehicle control assembly controls the on-off electromagnetic valve to enter the off state;
when the rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off electromagnetic valve to return to the connected state, the vehicle control assembly controls the on-off electromagnetic valve to return to the connected state; wherein the content of the first and second substances,
the slope stopping device comprises the cut-off electromagnetic valve and the manual switch;
the hill-holding device further comprises:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder;
the air outlet end of the break-make electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that in a connected state, the air chamber of each of the front axle brakes is connected to the parking brake air cartridge, and in an off state, the passage between the air chamber of each of the front axle brakes and the parking brake air cartridge is cut off.
In a third aspect, the present application provides a vehicle comprising:
the parking brake system comprises a vehicle main body, a parking brake and a control device, wherein the vehicle main body comprises a front axle brake, a rear axle brake, a parking brake air cylinder, a manual valve and a slope parking device;
the slope-stopping device comprises an on-off electromagnetic valve and a manual switch;
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the slope-stopping device also comprises an on-off electromagnetic valve;
the air outlet end of the on-off electromagnetic valve is communicated with the air chamber of each front axle brake through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with the foot brake valve through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder; wherein the content of the first and second substances,
the on-off electromagnetic valve is configured to be in a connection state, the air chamber of each front axle brake is communicated with the parking brake air cylinder, and in an off state, the passage of the air chamber of each front axle brake and the parking brake air cylinder is cut off;
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage of the air chamber of each front axle brake and the foot brake valve is cut off;
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in a on state when the manual valve is in the off state.
The beneficial effect that technical scheme that this application provided brought includes:
on the basis of the existing hand brake for controlling the rear axle brake, the application increases the service brake based on the front axle brake to participate in parking brake, achieves the purpose of increasing the parking capacity of the whole vehicle, and realizes the safe slope parking of the super-heavy vehicle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a slope-retaining device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a parking mechanism according to the prior art provided in the first embodiment of the present application;
fig. 3 is a working schematic diagram of a slope standing device according to a first embodiment of the present application;
fig. 4 is a flowchart illustrating steps of a hill-holding method according to a second embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The embodiment of the invention provides a slope parking device, a slope parking method and a vehicle, which are characterized in that on the basis of controlling a rear axle brake by a conventional hand brake, a service brake based on a front axle brake is added to participate in parking brake, so that the aim of increasing the parking capacity of the whole vehicle is fulfilled, and the safe slope parking of a super-heavy load vehicle is realized.
In order to achieve the technical effects, the general idea of the application is as follows:
a hill-holding device comprising:
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air storage cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve; wherein the content of the first and second substances,
the off-type solenoid valve is configured such that the air chamber of each front axle brake is communicated with the parking brake air reservoir when in a connected state, and the air chamber of each front axle brake is blocked from the parking brake air reservoir when in a disconnected state.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1 to 3, an embodiment of the present invention provides a hill-holding device, including:
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air storage cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve; wherein the content of the first and second substances,
the off-type solenoid valve is configured such that the air chamber of each front axle brake is communicated with the parking brake air reservoir when in a connected state, and the air chamber of each front axle brake is blocked from the parking brake air reservoir when in a disconnected state.
According to the embodiment of the application, when a vehicle is braked, namely slope parking is needed, the rear axle brake starts to work, at the moment, the on-off type electromagnetic valve is controlled to enter a communicated state by the manual switch, and the air is supplied to the air chamber of the front axle brake by the parking brake air storage cylinder, so that the front axle brake and the rear axle brake work in a matched mode, and the slope parking capacity is improved;
when the slope is not needed to be parked, the on-off type electromagnetic valve is controlled by the manual switch, so that the parking brake air storage cylinder stops supplying air to the air chamber of the front axle brake, and the front axle brake stops working.
When the vehicle is parked on a ramp, a handle of the manual control valve is put down, and a rear axle spring brakes;
meanwhile, a manual switch is turned on, a control circuit is connected with an on-off electromagnetic valve, the on-off electromagnetic valve enters a communicated state, compressed air of a parking braking air storage cylinder acts on an air chamber of a front axle brake, the air chamber pushes the front axle brake to brake, and at the moment, parking braking force of a vehicle to be lifted is rear axle spring braking force and front axle brake braking force;
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve corresponding to the front axle brake, the front axle brake force is released, and therefore the brake is completely released.
According to the embodiment of the application, on the basis that the conventional hand brake controls the rear axle brake, the service brake based on the front axle brake is added to participate in parking brake, the purpose of increasing the parking capacity of the whole vehicle is achieved, and the safe slope parking of the super-heavy vehicle is realized.
Further, this hill-holding device still includes:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline; wherein the content of the first and second substances,
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage between the air chamber of each front axle brake and the foot brake valve is cut off.
It should be noted that, as shown in fig. 1 of the drawings of the specification, the air outlet pipeline of the on-off solenoid valve and the air outlet pipeline of the off-off solenoid valve are independent from each other, and the air inlet pipeline of the on-off solenoid valve and the air inlet pipeline of the off-off solenoid valve are independent from each other.
Further, this hill-holding device still includes:
the vehicle control assembly is in signal connection with a manual control valve, an on-off solenoid valve and an on-off solenoid valve which are configured on the parking brake air cylinder respectively; wherein the content of the first and second substances,
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in an on state when the manual valve is in the off state.
In order to ensure the driving safety and prevent omission of closing the manual switch and releasing the front axle brake, a vehicle Control component, namely a VECU (vehicle Electronic Control Unit) controls the on-off type electromagnetic valve and the on-off type electromagnetic valve through an electric line after obtaining a brake release signal of the manual valve, so that the on-off type electromagnetic valve is in a connected state, and the on-off type electromagnetic valve is in a disconnected state, thereby ensuring the release of the front axle brake.
When the vehicle is normally driven, the slope-stopping device does not work, the on-off type electromagnetic valve is in an off state, the on-off type electromagnetic valve is in a connected state,
when parking on a ramp, the handle of the manual control valve is put down, the rear axle brake acts, and meanwhile, the manual switch is turned on,
on one hand, the manual switch is connected with the on-off type electromagnetic valve through the control circuit, the compressed air of the parking brake air storage cylinder acts on the air chamber of the front axle brake to push the front axle brake to brake,
on the other hand, the manual switch control circuit switches on the on-off type electromagnetic valve, the pipeline from the foot brake valve to the air chamber of the front axle brake is in an off state, compressed air is ensured not to flow to the foot brake valve,
at this time, the parking braking force is the rear axle spring braking force (air-cut braking) and the front axle brake braking force,
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, the on-off electromagnetic valve is in an off state, the on-off electromagnetic valve is in an on state, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve through the on-off electromagnetic valve, the front axle brake force is released, the brake is completely released, and the reliability of the embodiment of the application is improved.
It should be noted that, corresponding circuit loops are configured among the on-off solenoid valve, the manual switch, the one-way valve, the vehicle control assembly and the manual valve to ensure the normal operation of the embodiment of the present application.
Example two
Referring to fig. 4, an embodiment of the present invention provides a hill-holding method, based on the hill-holding device in the first embodiment, for improving the hill-holding capability of a vehicle to be lifted, the method including the following steps:
s1, when a rear axle brake of the vehicle to be lifted works, the on-off type electromagnetic valve is controlled to enter a connected state through the manual switch;
s2, enabling the high-pressure gas of the parking brake gas cylinder to enter a gas chamber of a front axle brake of the vehicle to be lifted;
s3, when the rear axle brake of the vehicle to be lifted stops working, the on-off type electromagnetic valve is controlled to enter an off state through the manual switch; wherein the content of the first and second substances,
the slope stopping device comprises an on-off electromagnetic valve and a manual switch;
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air reservoir of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the off-type solenoid valve is configured such that the air chamber of each front axle brake is communicated with the parking brake air reservoir when in a connected state, and the air chamber of each front axle brake is blocked from the parking brake air reservoir when in a disconnected state.
According to the embodiment of the application, when a vehicle is braked, namely slope parking is needed, the rear axle brake starts to work, at the moment, the on-off type electromagnetic valve is controlled to enter a communicated state by the manual switch, and the air is supplied to the air chamber of the front axle brake by the parking brake air storage cylinder, so that the front axle brake and the rear axle brake work in a matched mode, and the slope parking capacity is improved;
when the slope is not needed to be parked, the on-off type electromagnetic valve is controlled by the manual switch, so that the parking brake air storage cylinder stops supplying air to the air chamber of the front axle brake, and the front axle brake stops working.
When the vehicle is parked on a ramp, a handle of the manual control valve is put down, and a rear axle spring brakes;
meanwhile, a manual switch is turned on, a control circuit is connected with an on-off electromagnetic valve, the on-off electromagnetic valve enters a communicated state, compressed air of a parking braking air storage cylinder acts on an air chamber of a front axle brake, the air chamber pushes the front axle brake to brake, and at the moment, parking braking force of a vehicle to be lifted is rear axle spring braking force and front axle brake braking force;
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve corresponding to the front axle brake, the front axle brake force is released, and therefore the brake is completely released.
According to the embodiment of the application, on the basis that the conventional hand brake controls the rear axle brake, the service brake based on the front axle brake is added to participate in parking brake, the purpose of increasing the parking capacity of the whole vehicle is achieved, and the safe slope parking of the super-heavy vehicle is realized.
Further, the slope-standing device based on the slope-standing method further comprises the following steps:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline; wherein the content of the first and second substances,
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage between the air chamber of each front axle brake and the foot brake valve is cut off.
Further, the slope-standing device based on the slope-standing method further comprises the following steps:
the vehicle control assembly is in signal connection with a manual control valve, an on-off solenoid valve and an on-off solenoid valve which are configured on the parking brake air cylinder respectively; wherein the content of the first and second substances,
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in an on state when the manual valve is in the off state.
In order to ensure the driving safety and prevent omission of closing the manual switch and releasing the front axle brake, a vehicle Control component, namely a VECU (vehicle Electronic Control Unit) controls the on-off type electromagnetic valve and the on-off type electromagnetic valve through an electric line after obtaining a brake release signal of the manual valve, so that the on-off type electromagnetic valve is in a connected state, and the on-off type electromagnetic valve is in a disconnected state, thereby ensuring the release of the front axle brake.
Further, after step S3, the hill-holding method further includes the steps of:
when a rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off solenoid valve to enter an off state, the vehicle control assembly controls the on-off solenoid valve to enter the off state;
when a rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off type electromagnetic valve to return to the connected state, the vehicle control assembly controls the on-off type electromagnetic valve to return to the connected state;
when the vehicle is normally driven, the slope-stopping device does not work, the on-off type electromagnetic valve is in an off state, the on-off type electromagnetic valve is in a connected state,
when parking on a ramp, the handle of the manual control valve is put down, the rear axle brake acts, and meanwhile, the manual switch is turned on,
on one hand, the manual switch is connected with the on-off type electromagnetic valve through the control circuit, the compressed air of the parking brake air storage cylinder acts on the air chamber of the front axle brake to push the front axle brake to brake,
on the other hand, the manual switch control circuit switches on the on-off type electromagnetic valve, the pipeline from the foot brake valve to the air chamber of the front axle brake is in an off state, compressed air is ensured not to flow to the foot brake valve,
at this time, the parking braking force is the rear axle spring braking force (air-cut braking) and the front axle brake braking force,
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, the on-off electromagnetic valve is in an off state, the on-off electromagnetic valve is in an on state, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve through the on-off electromagnetic valve, the front axle brake force is released, the brake is completely released, and the reliability of the embodiment of the application is improved.
It should be noted that, corresponding circuit loops are configured among the on-off solenoid valve, the manual switch, the one-way valve, the vehicle control assembly and the manual valve to ensure the normal operation of the embodiment of the present application.
EXAMPLE III
An embodiment of the present invention provides a vehicle, including:
the vehicle body comprises a front axle brake, a rear axle brake, a parking brake air cylinder, a manual control valve and a slope parking device;
the slope stopping device comprises an on-off electromagnetic valve and a manual switch;
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air storage cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve; wherein the content of the first and second substances,
the off-type solenoid valve is configured such that the air chamber of each front axle brake is communicated with the parking brake air reservoir when in a connected state, and the air chamber of each front axle brake is blocked from the parking brake air reservoir when in a disconnected state.
According to the embodiment of the application, when a vehicle is braked, namely slope parking is needed, the rear axle brake starts to work, at the moment, the on-off type electromagnetic valve is controlled to enter a communicated state by the manual switch, and the air is supplied to the air chamber of the front axle brake by the parking brake air storage cylinder, so that the front axle brake and the rear axle brake work in a matched mode, and the slope parking capacity is improved;
when the slope is not needed to be parked, the on-off type electromagnetic valve is controlled by the manual switch, so that the parking brake air storage cylinder stops supplying air to the air chamber of the front axle brake, and the front axle brake stops working.
When the vehicle is parked on a ramp, a handle of the manual control valve is put down, and a rear axle spring brakes;
meanwhile, a manual switch is turned on, a control circuit is connected with an on-off electromagnetic valve, the on-off electromagnetic valve enters a communicated state, compressed air of a parking braking air storage cylinder acts on an air chamber of a front axle brake, the air chamber pushes the front axle brake to brake, and at the moment, parking braking force of a vehicle to be lifted is rear axle spring braking force and front axle brake braking force;
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve corresponding to the front axle brake, the front axle brake force is released, and therefore the brake is completely released.
According to the embodiment of the application, on the basis that the conventional hand brake controls the rear axle brake, the service brake based on the front axle brake is added to participate in parking brake, the purpose of increasing the parking capacity of the whole vehicle is achieved, and the safe slope parking of the super-heavy vehicle is realized.
Further, the vehicle still includes the foot brake valve, and the device of staying sloping still includes the on-off solenoid valve:
the air outlet end of the on-off electromagnetic valve is communicated with the air chambers of the front axle brakes through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with the foot brake valve through an air inlet pipeline; wherein the content of the first and second substances,
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage between the air chamber of each front axle brake and the foot brake valve is cut off.
Further, this hill-holding device still includes:
the vehicle control assembly is in signal connection with a manual control valve, an on-off solenoid valve and an on-off solenoid valve which are configured on the parking brake air cylinder respectively; wherein the content of the first and second substances,
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in an on state when the manual valve is in the off state.
In order to ensure the driving safety and prevent omission of closing the manual switch and releasing the front axle brake, a vehicle Control component, namely a VECU (vehicle Electronic Control Unit) controls the on-off type electromagnetic valve and the on-off type electromagnetic valve through an electric line after obtaining a brake release signal of the manual valve, so that the on-off type electromagnetic valve is in a connected state, and the on-off type electromagnetic valve is in a disconnected state, thereby ensuring the release of the front axle brake.
When the vehicle is normally driven, the slope-stopping device does not work, the on-off type electromagnetic valve is in an off state, the on-off type electromagnetic valve is in a connected state,
when parking on a ramp, the handle of the manual control valve is put down, the rear axle brake acts, and meanwhile, the manual switch is turned on,
on one hand, the manual switch is connected with the on-off type electromagnetic valve through the control circuit, the compressed air of the parking brake air storage cylinder acts on the air chamber of the front axle brake to push the front axle brake to brake,
on the other hand, the manual switch control circuit switches on the on-off type electromagnetic valve, the pipeline from the foot brake valve to the air chamber of the front axle brake is in an off state, compressed air is ensured not to flow to the foot brake valve,
at this time, the parking braking force is the rear axle spring braking force (air-cut braking) and the front axle brake braking force,
when the parking brake is released, the handle of the manual control valve is pulled up, the rear axle spring cavity is inflated, the spring brake is released, meanwhile, the manual switch is closed, the on-off electromagnetic valve is in an off state, the on-off electromagnetic valve is in an on state, compressed air in the air chamber of the front axle brake is discharged from the foot brake valve through the on-off electromagnetic valve, the front axle brake force is released, the brake is completely released, and the reliability of the embodiment of the application is improved.
It should be noted that, corresponding circuit loops are configured among the on-off solenoid valve, the manual switch, the one-way valve, the vehicle control assembly and the manual valve to ensure the normal operation of the embodiment of the present application.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. A hill-holding device for mounting on a vehicle to be lifted, the hill-holding device comprising:
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the hill-holding device further comprises:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder; wherein the content of the first and second substances,
the on-off electromagnetic valve is configured to be in a connection state, the air chamber of each front axle brake is communicated with the parking brake air cylinder, and in an off state, the passage of the air chamber of each front axle brake and the parking brake air cylinder is cut off;
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage of the air chamber of each front axle brake and the foot brake valve is cut off;
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in a on state when the manual valve is in the off state.
2. A hill-holding method for improving the hill-holding capability of a vehicle to be lifted based on the hill-holding device of claim 1, the method comprising the steps of:
when a rear axle brake of the vehicle to be lifted works, the on-off type electromagnetic valve is controlled to enter a connected state through a manual switch;
high-pressure gas of a parking brake gas cylinder enters a gas chamber of a front axle brake of the vehicle to be lifted;
when the rear axle brake of the vehicle to be lifted stops working, the on-off type electromagnetic valve is controlled to enter an off state through the manual switch;
the hill-holding method further comprises the following steps:
when the rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off electromagnetic valve to enter the off state, the vehicle control assembly controls the on-off electromagnetic valve to enter the off state;
when the rear axle brake of the vehicle to be lifted stops working and the manual switch does not control the on-off electromagnetic valve to return to the connected state, the vehicle control assembly controls the on-off electromagnetic valve to return to the connected state; wherein the content of the first and second substances,
the slope stopping device comprises the cut-off electromagnetic valve and the manual switch;
the hill-holding device further comprises:
the air outlet end of the on-off electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with foot brake valves of the vehicle to be lifted through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder;
the air outlet end of the break-make electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the on-off electromagnetic valve is configured to be in a connection state, the air chamber of each front axle brake is communicated with the parking brake air cylinder, and in an off state, the passage of the air chamber of each front axle brake and the parking brake air cylinder is cut off;
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage of the air chamber of each front axle brake and the foot brake valve is cut off;
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in a on state when the manual valve is in the off state.
3. A vehicle, characterized in that the vehicle comprises:
the parking brake system comprises a vehicle main body, a parking brake and a control device, wherein the vehicle main body comprises a front axle brake, a rear axle brake, a parking brake air cylinder, a manual valve and a slope parking device;
the slope-stopping device comprises an on-off electromagnetic valve and a manual switch;
the air outlet end of the break-make type electromagnetic valve is communicated with air chambers of front axle brakes of the vehicle to be lifted through an air outlet pipeline, and the air inlet end of the break-make type electromagnetic valve is communicated with a parking brake air cylinder of the vehicle to be lifted through an air inlet pipeline;
the manual switch is in signal connection with the on-off type electromagnetic valve and is used for controlling the on-off of the on-off type electromagnetic valve;
the slope-stopping device also comprises an on-off electromagnetic valve;
the air outlet end of the on-off electromagnetic valve is communicated with the air chamber of each front axle brake through an air outlet pipeline, and the air inlet end of the on-off electromagnetic valve is communicated with the foot brake valve through an air inlet pipeline;
the vehicle control assembly is respectively in signal connection with the manual control valve, the on-off solenoid valve and the on-off solenoid valve which are configured on the parking brake air cylinder; wherein the content of the first and second substances,
the on-off electromagnetic valve is configured to be in a connection state, the air chamber of each front axle brake is communicated with the parking brake air cylinder, and in an off state, the passage of the air chamber of each front axle brake and the parking brake air cylinder is cut off;
the manual switch is also in signal connection with the on-off type electromagnetic valve and is also used for controlling the on-off of the on-off type electromagnetic valve;
the on-off solenoid valve is configured such that when the on-off solenoid valve is in an on state, the air chamber of each front axle brake is in communication with the foot brake valve, and when the on-off solenoid valve is in an off state, the passage of the air chamber of each front axle brake and the foot brake valve is cut off;
the vehicle control assembly is configured to control the on-off solenoid valve to be in an off state and the on-off solenoid valve to be in a on state when the manual valve is in the off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011034990.2A CN112208536B (en) | 2020-09-27 | 2020-09-27 | Slope parking device, slope parking method and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011034990.2A CN112208536B (en) | 2020-09-27 | 2020-09-27 | Slope parking device, slope parking method and vehicle |
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| CN112208536B true CN112208536B (en) | 2022-01-04 |
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