CN112896115B - Pneumatic brake auxiliary system and method integrating intelligent brake and manual brake - Google Patents
Pneumatic brake auxiliary system and method integrating intelligent brake and manual brake Download PDFInfo
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- CN112896115B CN112896115B CN202110112284.3A CN202110112284A CN112896115B CN 112896115 B CN112896115 B CN 112896115B CN 202110112284 A CN202110112284 A CN 202110112284A CN 112896115 B CN112896115 B CN 112896115B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 2
- FXNSVEQMUYPYJS-UHFFFAOYSA-N 4-(2-aminoethyl)benzenesulfonamide Chemical compound NCCC1=CC=C(S(N)(=O)=O)C=C1 FXNSVEQMUYPYJS-UHFFFAOYSA-N 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/03—Brake assistants
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a pneumatic brake auxiliary system and a method integrating intelligent braking and manual braking, wherein the system comprises a piston, a piston and a brake control unit, wherein the piston is used for opening or blocking a vent hole of a pneumatic brake master cylinder; the hollow driving rod is used for accommodating and limiting the telescopic path of the piston; the piston driver is used for intelligently and manually controlling the piston to work; the positioning guide cup cover is used for limiting the position of the hollow driving rod; the method comprises the following steps: 1. initializing a coding motor; 2. real-time monitoring of vehicle running and road condition information; 3. and (5) braking. According to the invention, the dual pneumatic brake protection of the intelligent brake and the manual brake is realized by utilizing the cooperation of the piston, the push post, the hollow driving rod, the positioning guide cup cover and the coding motor, and when a driver manually brakes, the push rod directly acts on the piston through the hollow driving rod; when the vehicle is emergently braked intelligently, the coding motor controls the pushing column to push the piston while controlling the rotation angle of the hollow driving rod accurately, and the brake depth control effect is good and the volume is small.
Description
Technical Field
The invention belongs to the technical field of vehicle braking, and particularly relates to a pneumatic braking auxiliary system and method integrating intelligent braking and manual braking.
Background
The prior large trucks, buses, trucks (such as heavy trucks, buses and engineering vehicles) and partial agricultural vehicles are all provided with pneumatic brake master pumps as pneumatic brake assemblies, the pneumatic brakes are suitable for large space vehicles, the required Braking force is large, the using distance is long, the reaction speed is high, the proportion of the cost on the whole truck is low, the manual control Braking force is required when emergency Braking is met, the adjusting range of the manual control Braking force is wide, but the driver is required to keep a vigilance state at all times, and unpredictable traffic accidents are caused when the driver does not perceive abnormal conditions, so AEBS (ADVANCED EMERGENCY brake System) is increasingly used by most trucks in advance, and the AEBS is an autonomous automatic road vehicle safety System, the System monitors the relative speed and distance between the front vehicle and the detected and target vehicle according to the sensor, calculates the impending situation, can automatically avoid collision or lighten the influence of the collision under dangerous conditions, and the AEBS is a collection of an AEBS acquisition System and an execution System, wherein the AEBS acquisition System utilizes an eagle eye and a Cat eye to detect obstacles at the front and rear of the vehicle, comprises an anti-collision early warning System, a lane departure recognition System and a driver behavior recognition System, firstly alarms through a series of internal program operation, transmits a brake signal to the execution System to automatically brake under the condition that the driver does not actively brake, has various types of the existing execution systems and different control forms, and has the brake depth adjustment accuracy to be improved on the Braking effect of the truck.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a pneumatic brake auxiliary system integrating intelligent braking and manual braking, which is novel and reasonable in design, and realizes double pneumatic brake protection integrating intelligent braking and manual braking by utilizing the cooperation of a piston, a push post, a hollow driving rod, a positioning guide cup cover and a coding motor, wherein when a driver manually brakes, a push rod directly acts on the piston through the hollow driving rod; when the vehicle is emergently braked intelligently, the encoding motor controls the pushing column to push the piston while controlling the rotation angle of the hollow driving rod accurately, the brake depth control effect is good, the occupied volume is small, and the popularization and the use are convenient.
In order to solve the technical problems, the invention adopts the following technical scheme: collect intelligent brake and manual brake auxiliary system as an organic whole, its characterized in that: comprising the following steps:
the piston is used for opening or blocking the vent hole of the pneumatic brake master cylinder;
the hollow driving rod is used for accommodating and limiting the telescopic path of the piston;
the piston driver is used for intelligently and manually controlling the piston to work;
the positioning guide cup cover is used for limiting the position of the hollow driving rod;
the positioning guide cup cover comprises a fixed disc and a limiting disc, and the fixed disc and the limiting disc are connected through a protection outer cylinder and a positioning guide inner cylinder which are coaxially arranged;
The size of the fixed disc is larger than that of the limiting disc, and the fixed disc is fixedly connected with the air pressure type brake master cylinder shell through a plurality of mounting bolts.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the hollow driving rod comprises a pushing column driving cylinder, a pushing column limiting baffle ring and a pushing column driving shaft which are sequentially connected and are of hollow structures, and external threads are arranged outside the pushing column driving cylinder.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the piston comprises a piston conical head, a piston conical head pushing disc and a piston conical head guide rod which are sequentially connected, and the piston conical head guide rod extends into the pushing column driving cylinder.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the piston driver comprises an artificial brake driver and an intelligent brake driver;
The manual brake driver comprises a push rod which stretches into the hollow driving rod and is in butt joint with the piston conical head guide rod and a brake connecting rod which rotates around a fulcrum bolt, a pedal is arranged at one end of the brake connecting rod, the other end of the brake connecting rod is hinged with the push rod positioning seat, and one end of the push rod, far away from the piston conical head guide rod, is arranged on the push rod positioning seat;
The intelligent brake driver comprises a push column arranged outside the push column driving cylinder and a coding motor which is arranged on the push column driving shaft and drives the hollow driving rod to rotate, and internal threads matched with external threads of the push column driving cylinder are arranged in the push column.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: and a conical hole is formed in the inner side of one end, far away from the push column limiting baffle ring, of the push column driving shaft.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the outer diameter of the piston conical head pushing disc is larger than the inner diameter of the pushing column.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the coding motor is controlled by a vehicle-mounted computer, and the vehicle-mounted computer is integrated with an AEBS acquisition system.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the limiting disc is provided with a limiting through hole communicated with the positioning guide inner cylinder, the inner diameter of the limiting through hole is smaller than the outer diameter of the pushing column limiting baffle ring, the pushing column driving cylinder and the pushing column limiting baffle ring penetrate through the limiting through hole and extend into the positioning guide inner cylinder, a gap for the pushing column to move is reserved between the pushing column driving cylinder and the positioning guide inner cylinder, and the fixing disc is provided with an output through hole for the pushing column to extend out.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the positioning guide inner cylinder is an inner hexagonal positioning guide inner cylinder, and the pushing column is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
The pneumatic brake auxiliary system integrating intelligent braking and manual braking is characterized in that: the encoding motor is a worm gear type speed reducing motor and an angle encoder arranged at one end of a worm wheel shaft of the worm gear type speed reducing motor.
Meanwhile, the invention also discloses a pneumatic braking method which is simple in method steps and reasonable in design and integrates intelligent braking and manual braking, and is characterized in that: the method comprises the following steps:
Step one, initializing a coding motor: the coding motor is connected with a vehicle-mounted computer, the coding motor is controlled by the vehicle-mounted computer, the vehicle-mounted computer is integrated with an AEBS acquisition system, the coding motor is initialized, and the coding motor is reset;
step two, real-time monitoring of vehicle running and road condition information: the driver drives the vehicle to travel, and the AEB system is utilized to collect road condition information in real time;
step three, braking, wherein the process is as follows:
when a driver finds abnormal road condition information, the driver manually controls the piston to work, pedals are stepped on by feet, the brake connecting rod rotates around the fulcrum bolt, the ejector rod positioning seat drives the ejector rod to move towards the piston cone head guide rod, the ejector rod pushes the piston cone head guide rod, and then the piston cone head is pushed to extend into the vent hole of the pneumatic brake master cylinder to drive the vehicle brake system to brake the vehicle;
When the driver does not find abnormal road condition information, the AEBS system transmits the real-time collected road condition information to the vehicle-mounted computer through intelligent control of the piston to work, the vehicle-mounted computer controls the coding motor to rotate, and then the driving shaft of the pushing column is driven to rotate, the positioning guide inner cylinder drives the pushing column to linearly move on the driving cylinder of the pushing column, the pushing column pushes the piston cone head pushing disc, and further the linear forward movement of the piston cone head is achieved to extend into the vent hole of the pneumatic brake master cylinder to drive the vehicle brake system to brake the vehicle.
The method is characterized in that: step three, when a driver finds abnormal road condition information, the driver manually controls the piston to work, and realizes braking at different depth levels by controlling the depth of stepping on the pedal;
when the driver does not find abnormal road condition information, the intelligent control piston works, and the vehicle-mounted computer controls the rotation angle of the coding motor to realize braking at different depth levels.
The method is characterized in that: the outer diameter of the piston conical head pushing disc is larger than the inner diameter of the pushing column.
The method is characterized in that: the road condition abnormal information comprises pedestrians and vehicles approaching the vehicle.
The method is characterized in that: the positioning guide inner cylinder is an inner hexagonal positioning guide inner cylinder, and the pushing column is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
Compared with the prior art, the invention has the following advantages:
1. According to the system adopted by the invention, the hollow driving rod is arranged, so that on one hand, a mounting guide rail is provided for the piston, and on the other hand, the piston is in threaded fit with the push column; when the manual brake is carried out, the hollow driving rod is not moved, so that the pushing column is not moved, and after the pedal is stepped on by a foot, the brake connecting rod drives the pushing rod to extend into the hollow part of the hollow driving rod to directly push the piston; when intelligent braking is carried out, the coding motor drives the hollow driving rod to rotate, and then the pushing column moves forward, and the pushing column moves forward to directly push the piston conical head pushing disc of the piston from the outer side, so that the piston moves forward, the action is ingenious, and the popularization and the use are convenient.
2. The system adopted by the invention realizes double pneumatic brake protection by integrating intelligent brake and manual brake by utilizing the cooperation of the piston, the push column, the hollow driving rod, the positioning guide cup cover and the coding motor on the basis of not changing the original vehicle structure, and has the advantages of good brake depth control effect, small occupied volume, reliability, stability and good use effect.
3. The method adopted by the invention has simple steps, the coding motor is initialized by utilizing the vehicle-mounted computer integrated with the AEB system, the accurate control of the coding motor by the vehicle-mounted computer is realized, the effect of collecting external road condition information is good, when a driver finds out abnormal road condition information during braking, the driver manually controls the piston to work and steps on the pedal, the brake connecting rod rotates around the fulcrum bolt, the ejector rod positioning seat drives the ejector rod to move towards the piston cone guide rod, the ejector rod pushes the piston cone guide rod, and the piston cone is pushed to extend into the vent hole of the pneumatic brake master cylinder to drive the vehicle braking system to brake the vehicle; when the driver does not find the road condition abnormal information, the AEBS system transmits the road condition information acquired in real time to the vehicle-mounted computer through the intelligent control piston, the vehicle-mounted computer controls the coding motor to rotate, and then the driving shaft of the pushing column is driven to rotate, the positioning guide inner cylinder drives the pushing column to linearly move on the driving cylinder of the pushing column, the pushing column pushes the piston cone head pushing disc, further the linear forward movement of the piston cone head is realized, and the vehicle braking system is driven to brake the vehicle in the vent hole of the pneumatic brake master cylinder, so that the vehicle brake is convenient to popularize and use.
In summary, the invention has novel and reasonable design, and utilizes the cooperation of the piston, the push post, the hollow driving rod, the positioning guide cup cover and the coding motor to realize the dual pneumatic brake protection of integrating intelligent brake and manual brake, and when a driver manually brakes, the push rod directly acts on the piston through the hollow driving rod; when the vehicle is emergently braked intelligently, the encoding motor controls the pushing column to push the piston while controlling the rotation angle of the hollow driving rod accurately, the brake depth control effect is good, the occupied volume is small, and the popularization and the use are convenient.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the mating relationship of a piston, push post and hollow drive rod of the present invention.
FIG. 2 is a schematic illustration of the mating relationship of the piston, push post, hollow drive rod and positioning guide cup of the present invention.
FIG. 3 is a schematic diagram of the mating relationship of the piston, push post, hollow drive rod, positioning guide cup and encoding motor of the present invention.
FIG. 4 is a schematic diagram of the positional relationship of the piston, push post and pneumatic brake master cylinder when the present invention is not in operation.
FIG. 5 is a schematic diagram of the relationship between the piston, push post and pneumatic brake master cylinder in the manual control of the present invention.
FIG. 6 is a schematic diagram of the positional relationship of the piston, push post and pneumatic brake master cylinder when the intelligent control piston of the present invention is in operation.
Fig. 7 is a view showing the state of use of the manual control piston according to the present invention.
Fig. 8 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1-a piston; 1-1, a piston cone head; 1-2, a piston cone head pushing disc;
1-3-piston cone head guide rod; 2-pushing columns; 3-a hollow drive rod;
3-1, pushing a column driving cylinder; 3-2, pushing a column limiting baffle ring; 3-pushing column driving shaft;
3-4-conical holes; 4-positioning and guiding the cup cover; 4-1, a fixed disc;
4-2, a limiting disc; 4-3, a protective outer cylinder; 4-positioning guide inner cylinder;
5-encoding a motor; 6-pneumatic brake master cylinder; 7, installing bolts;
8-pushing the rod; 9-pushing rod positioning seat; 10-a brake connecting rod;
11-foot pedal; 12-fulcrum bolt.
Detailed Description
As shown in fig. 1 to 7, the pneumatic brake auxiliary system integrating intelligent braking and manual braking according to the present invention comprises:
The piston 1 is used for opening or blocking a vent hole of the pneumatic brake master cylinder 6;
the hollow driving rod 3 is used for accommodating and limiting the telescopic path of the piston 1;
The piston driver is used for intelligently and manually controlling the piston 1 to work;
The positioning guide cup cover 4 is used for limiting the position of the hollow driving rod 3;
The positioning guide cup cover 4 comprises a fixed disc 4-1 and a limiting disc 4-2, and the fixed disc 4-1 and the limiting disc 4-2 are connected through a protection outer cylinder 4-3 and a positioning guide inner cylinder 4-4 which are coaxially arranged;
The size of the fixed disc 4-1 is larger than that of the limiting disc 4-2, and the fixed disc 4-1 is fixedly connected with the outer shell of the pneumatic brake master cylinder 6 through a plurality of mounting bolts 7.
In this embodiment, the hollow driving rod 3 includes a push column driving cylinder 3-1, a push column limiting baffle ring 3-2 and a push column driving shaft 3-3 which are sequentially connected and are all of hollow structures, and external threads are arranged outside the push column driving cylinder 3-1.
In this embodiment, the piston 1 includes a piston conical head 1-1, a piston conical head pushing disc 1-2 and a piston conical head guide rod 1-3 which are sequentially connected, and the piston conical head guide rod 1-3 extends into the pushing column driving cylinder 3-1.
In this embodiment, the piston driver includes an artificial brake driver and an intelligent brake driver;
The manual brake driver comprises a push rod 8 extending into the hollow driving rod 3 and abutting against the piston cone head guide rod 1-3, and a brake connecting rod 10 rotating around a fulcrum bolt 12, wherein a pedal 11 is arranged at one end of the brake connecting rod 10, the other end of the brake connecting rod 10 is hinged with a push rod positioning seat 9, and one end of the push rod 8 far away from the piston cone head guide rod 1-3 is arranged on the push rod positioning seat 9;
The intelligent brake driver comprises a push column 2 arranged outside a push column driving cylinder 3-1 and a coding motor 5 which is arranged on a push column driving shaft 3-3 and drives a hollow driving rod 3 to rotate, wherein internal threads matched with external threads of the push column driving cylinder 3-1 are arranged in the push column 2.
In this embodiment, a tapered hole 3-4 is provided on the inner side of one end of the push pillar driving shaft 3-3 far away from the push pillar limiting stop ring 3-2.
It should be noted that, the push rod 8 is pushed into the hollow portion of the hollow driving rod 3 by the push rod positioning seat 9, and the movement track of the push rod positioning seat 9 is not a straight line, so that the advancing track of the push rod 8 is not a complete straight line, and the inner side of one end of the push rod driving shaft 3-3 far away from the push rod limiting stop ring 3-2 is provided with a tapered hole 3-4, so as to ensure that the push rod 8 extends into the hollow portion of the hollow driving rod 3 to preset allowance, and increase the stroke of the push rod 8.
In this embodiment, the outer diameter of the piston conical head pushing disc 1-2 is larger than the inner diameter of the pushing column 2.
It should be noted that, the purpose of the outer diameter of the piston conical head pushing disc 1-2 being larger than the inner diameter of the pushing column 2 is to ensure that the piston conical head pushing disc 1-2 can be pushed when the pushing column 2 moves forward, so as to realize the forward movement of the piston conical head 1-1.
In this embodiment, the encoding motor 5 is controlled by a vehicle-mounted computer, and the vehicle-mounted computer is integrated with an AEBS acquisition system.
In this embodiment, a limiting through hole communicated with the positioning guide inner cylinder 4-4 is formed in the limiting disc 4-2, the inner diameter of the limiting through hole is smaller than the outer diameter of the pushing column limiting baffle ring 3-2, the pushing column driving cylinder 3-1 and the pushing column limiting baffle ring 3-2 penetrate through the limiting through hole to extend into the positioning guide inner cylinder 4-4, a gap for the pushing column 2 to move is formed between the pushing column driving cylinder 3-1 and the positioning guide inner cylinder 4-4, and an output through hole for the pushing column 2 to extend is formed in the fixing disc 4-1.
In this embodiment, the positioning guide inner cylinder 4-4 is an inner hexagonal positioning guide inner cylinder, and the pushing column 2 is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
In this embodiment, the encoding motor 5 is a worm gear type gear motor and an angle encoder mounted at one end of a worm shaft of the worm gear type gear motor.
It should be noted that, the encoding motor 5 preferably adopts a worm gear type gear motor in a motor vehicle brake with the application number 201721548750.8 and an angle encoder installed at one end of a worm wheel shaft of the worm gear type gear motor, and has the advantages of small structure, accurate measurement and simple control.
The pneumatic braking method integrating intelligent braking and manual braking as shown in fig. 8 comprises the following steps:
Step one, initializing a coding motor: the coding motor 5 is connected with a vehicle-mounted computer, the coding motor 5 is controlled by the vehicle-mounted computer, the vehicle-mounted computer is integrated with an AEBS acquisition system, the coding motor 5 is initialized, and the coding motor 5 is reset;
step two, real-time monitoring of vehicle running and road condition information: the driver drives the vehicle to travel, and the AEB system is utilized to collect road condition information in real time;
step three, braking, wherein the process is as follows:
When a driver finds abnormal road condition information, the driver manually controls the piston 1 to work, pedals 11 are stepped on by feet, the brake connecting rod 10 rotates around the fulcrum bolt 12, the push rod positioning seat 9 drives the push rod 8 to move towards the piston cone guide rod 1-3, the push rod 8 pushes the piston cone guide rod 1-3, and then the piston cone 1-1 is pushed to extend into the vent hole of the pneumatic brake master cylinder 6 to drive the vehicle brake system to brake the vehicle;
When the driver does not find abnormal road condition information, the AEBS system transmits the road condition information acquired in real time to the vehicle-mounted computer through the intelligent control piston 1, the vehicle-mounted computer controls the coding motor 5 to rotate, and then drives the push column driving shaft 3-3 to rotate, the positioning guide inner cylinder 4-4 drives the push column 2 to linearly move on the push column driving cylinder 3-1, the push column 2 pushes the piston cone push disc 1-2, and further the linear forward movement of the piston cone 1-1 is realized, and the piston cone moves into the vent hole of the pneumatic brake master cylinder 6 to drive the vehicle brake system to brake the vehicle.
In this embodiment, the outer diameter of the piston conical head pushing disc 1-2 is larger than the inner diameter of the pushing column 2.
In the third embodiment, when the driver finds abnormal road condition information, the driver manually controls the piston 1 to work, and controls the depth of stepping on the pedal 11 to realize braking at different depth levels;
When the driver does not find abnormal road condition information, the intelligent control piston 1 works, and the vehicle-mounted computer controls the rotation angle of the coding motor 5 to realize braking at different depth levels.
In this embodiment, the traffic abnormality information includes pedestrians and vehicles approaching the host vehicle.
In this embodiment, the positioning guide inner cylinder 4-4 is an inner hexagonal positioning guide inner cylinder, and the pushing column 2 is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
When the invention is used, the push rod passes through the hollow driving rod to directly act on the piston when a driver brakes manually; when the vehicle is braked intelligently and emergently, the coding motor controls the rotation angle of the hollow driving rod precisely and simultaneously controls the pushing column to push the piston, the brake depth control effect is good, when the piston 1 is controlled to work manually and the pedal 11 is stepped on by foot, the piston 1 stretches into the vent hole of the pneumatic brake master cylinder 6 to drive the vehicle brake system to brake the vehicle, and after the pedal force is released, the pneumatic brake master cylinder 6 is reset to reset the piston 1, so that the control is simple and flexible; when the intelligent control piston 1 works, the coding motor 5 rotates, and then the push column driving shaft 3-3 is driven to rotate, the positioning guide inner cylinder 4-4 drives the push column 2 to linearly move on the push column driving cylinder 3-1, the push column 2 pushes the piston cone push disc 1-2, further the linear forward movement of the piston cone 1-1 is realized, the vehicle braking system is driven to brake the vehicle in the vent hole of the air pressure type brake master cylinder 6, the coding motor 5 overturns and the air pressure type brake master cylinder 6 resets the piston 1, and the cooperation of the piston, the push column, the hollow driving rod, the positioning guide cup cover and the coding motor is utilized, so that the dual pneumatic brake protection of the intelligent brake and the manual brake is realized.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (11)
1. Collect intelligent brake and manual brake auxiliary system as an organic whole, its characterized in that: comprising the following steps:
The piston (1) is used for opening or blocking the vent hole of the pneumatic brake master cylinder (6);
the hollow driving rod (3) is used for accommodating and limiting the telescopic path of the piston (1);
the piston driver is used for intelligently and manually controlling the piston (1) to work;
the positioning guide cup cover (4) is used for limiting the position of the hollow driving rod (3);
the positioning guide cup cover (4) comprises a fixed disc (4-1) and a limiting disc (4-2), and the fixed disc (4-1) and the limiting disc (4-2) are connected with the positioning guide inner cylinder (4-4) through a protection outer cylinder (4-3) which is coaxially arranged;
The size of the fixed disc (4-1) is larger than that of the limiting disc (4-2), and the fixed disc (4-1) is fixedly connected with the outer shell of the pneumatic brake master cylinder (6) through a plurality of mounting bolts (7);
The hollow driving rod (3) comprises a pushing column driving cylinder (3-1), a pushing column limiting baffle ring (3-2) and a pushing column driving shaft (3-3) which are sequentially connected and are of hollow structures, and external threads are arranged outside the pushing column driving cylinder (3-1);
The piston (1) comprises a piston conical head (1-1), a piston conical head pushing disc (1-2) and a piston conical head guide rod (1-3) which are connected in sequence, and the piston conical head guide rod (1-3) stretches into the pushing column driving cylinder (3-1);
the piston driver comprises an artificial brake driver and an intelligent brake driver;
The manual brake driver comprises a push rod (8) which extends into the hollow driving rod (3) and is in butt joint with the piston conical head guide rod (1-3) and a brake connecting rod (10) which rotates around a fulcrum bolt (12), a pedal plate (11) is arranged at one end of the brake connecting rod (10), the other end of the brake connecting rod (10) is hinged with the push rod positioning seat (9), and one end, far away from the piston conical head guide rod (1-3), of the push rod (8) is arranged on the push rod positioning seat (9);
The intelligent brake driver comprises a push column (2) arranged outside a push column driving cylinder (3-1) and a coding motor (5) which is arranged on a push column driving shaft (3-3) and drives a hollow driving rod (3) to rotate, wherein internal threads matched with external threads of the push column driving cylinder (3-1) are arranged in the push column (2);
a conical hole (3-4) is formed in the inner side of one end, far away from the pushing column limiting baffle ring (3-2), of the pushing column driving shaft (3-3);
The motion track of the pushing rod positioning seat (9) is nonlinear, the forward moving track of the pushing rod (8) is not a complete straight line, the inner side of one end of the pushing rod driving shaft (3-3) far away from the pushing rod limiting baffle ring (3-2) is provided with a conical hole (3-4), the purpose of ensuring that the pushing rod (8) stretches into a preset allowance of the hollow part of the hollow driving rod (3) is achieved, and the stroke of the pushing rod (8) is increased.
2. The pneumatic brake assist system integrating intelligent braking and manual braking as set forth in claim 1, wherein: the outer diameter of the piston conical head pushing disc (1-2) is larger than the inner diameter of the pushing column (2).
3. The pneumatic brake assist system integrating intelligent braking and manual braking as set forth in claim 1, wherein: the coding motor (5) is controlled by a vehicle-mounted computer, and the vehicle-mounted computer is integrated with an AEBS acquisition system.
4. The pneumatic brake assist system integrating intelligent braking and manual braking as set forth in claim 1, wherein: the limiting disc (4-2) is provided with a limiting through hole communicated with the positioning guide inner cylinder (4-4), the inner diameter of the limiting through hole is smaller than the outer diameter of the pushing column limiting baffle ring (3-2), the pushing column driving cylinder (3-1) and the pushing column limiting baffle ring (3-2) penetrate through the limiting through hole and extend into the positioning guide inner cylinder (4-4), a gap for the pushing column (2) to move is reserved between the pushing column driving cylinder (3-1) and the positioning guide inner cylinder (4-4), and the fixed disc (4-1) is provided with an output through hole for the pushing column (2) to extend out.
5. The pneumatic brake assist system integrating intelligent braking and manual braking as set forth in claim 1, wherein: the positioning guide inner cylinder (4-4) is an inner hexagonal positioning guide inner cylinder, and the pushing column (2) is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
6. The pneumatic brake assist system integrating intelligent braking and manual braking as set forth in claim 1, wherein: the coding motor (5) is a worm gear type speed reducing motor and an angle coder arranged at one end of a worm wheel shaft of the worm gear type speed reducing motor.
7. A method of pneumatically braking with the auxiliary system of claim 4, wherein: the method comprises the following steps:
step one, initializing a coding motor: the coding motor (5) is connected with a vehicle-mounted computer, the coding motor (5) is controlled by the vehicle-mounted computer, the vehicle-mounted computer is integrated with an AEBS acquisition system, the coding motor (5) is initialized, and the coding motor (5) is reset;
step two, real-time monitoring of vehicle running and road condition information: the driver drives the vehicle to travel, and the AEB system is utilized to collect road condition information in real time;
step three, braking, wherein the process is as follows:
When a driver finds abnormal road condition information, the driver manually controls the piston (1) to work, pedals the pedal (11) by foot, the brake connecting rod (10) rotates around the fulcrum bolt (12), the push rod positioning seat (9) drives the push rod (8) to move towards the piston cone head guide rod (1-3), and the push rod (8) pushes the piston cone head guide rod (1-3) to push the piston cone head (1-1) to extend into the vent hole of the pneumatic brake master cylinder (6) to drive the vehicle brake system to brake the vehicle;
When the driver does not find abnormal road condition information, the AEBS system transmits the real-time collected road condition information to the vehicle-mounted computer through the intelligent control piston (1) to work, the vehicle-mounted computer controls the coding motor (5) to rotate and further drives the pushing column driving shaft (3-3) to rotate, the positioning guide inner cylinder (4-4) drives the pushing column (2) to linearly move on the pushing column driving cylinder (3-1), the pushing column (2) pushes the piston cone pushing disc (1-2), and further the linear forward movement of the piston cone (1-1) is achieved to extend into the vent hole of the pneumatic brake master cylinder (6) to drive the vehicle brake system to brake the vehicle.
8. The method of claim 7, wherein: step three, when a driver finds abnormal road condition information, the driver manually controls the piston (1) to work, and realizes braking at different depth levels by controlling the depth of stepping on the pedal (11);
When the driver does not find abnormal road condition information, the intelligent control piston (1) works, and the vehicle-mounted computer controls the rotation angle of the coding motor (5) to realize braking at different depth levels.
9. The method of claim 7, wherein: the outer diameter of the piston conical head pushing disc (1-2) is larger than the inner diameter of the pushing column (2).
10. The method of claim 7, wherein: the road condition abnormal information comprises pedestrians and vehicles approaching the vehicle.
11. The method of claim 7, wherein: the positioning guide inner cylinder (4-4) is an inner hexagonal positioning guide inner cylinder, and the pushing column (2) is an outer hexagonal pushing column matched with the inner hexagonal positioning guide inner cylinder.
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| CN202110112284.3A CN112896115B (en) | 2021-01-27 | 2021-01-27 | Pneumatic brake auxiliary system and method integrating intelligent brake and manual brake |
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| CN202110112284.3A CN112896115B (en) | 2021-01-27 | 2021-01-27 | Pneumatic brake auxiliary system and method integrating intelligent brake and manual brake |
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| CN112896115B true CN112896115B (en) | 2024-05-14 |
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