CN111959474A - Parking brake device for vehicle and operating method thereof - Google Patents
Parking brake device for vehicle and operating method thereof Download PDFInfo
- Publication number
- CN111959474A CN111959474A CN202010883472.1A CN202010883472A CN111959474A CN 111959474 A CN111959474 A CN 111959474A CN 202010883472 A CN202010883472 A CN 202010883472A CN 111959474 A CN111959474 A CN 111959474A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- parking brake
- communicated
- parking
- main controller
- 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.)
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
Abstract
A parking brake device of a vehicle and a working method thereof comprise an energy accumulator, a parking brake, a parking hydraulic cylinder, a manual reversing valve, an electromagnetic valve, a pressure sensor, a Hall sensor, an induction piece and a main controller; an execution port A of the manual reversing valve is respectively communicated with a pressure sensor and a first oil inlet P1 port of the electromagnetic valve; a second oil inlet P2 of the electromagnetic valve is communicated with the energy accumulator, and an execution port A of the electromagnetic valve is communicated with a rod cavity of the parking hydraulic cylinder; the terminal K end of the electromagnetic valve, the pressure sensor and the Hall sensor are all electrically connected or wirelessly communicated with the main controller; when the pressure value of the pressure sensor is smaller than the set pressure value in the main controller and the rotating speed value of the Hall sensor is larger than 0rpm, the terminal K end of the electromagnetic valve is controlled by the main controller to be electrified. The parking brake of the present invention has a long service life.
Description
Technical Field
The present invention relates to a vehicle, and more particularly, to a parking brake device for a vehicle and a method for operating the same.
Background
Before the vehicle starts to run, the parking brake needs to be released, but in practice, the situation that a driver starts to run without releasing the parking brake often occurs, so that when the vehicle starts to run, the static sheet and the moving sheet of the parking brake are subjected to accelerated wear, and the service life of the parking brake is shortened. The prior art parking brake apparatus is shown in fig. 2, and includes an accumulator 31, a parking brake 32, a parking cylinder 33, and a manual directional valve 34; the parking brake 32 comprises a plurality of moving plates 32-1 and a plurality of static plates 32-2; the moving plates 32-1 and the static plates 32-2 are arranged alternately; the right end of a piston rod of the parking hydraulic cylinder 33 is abutted against the moving plate 32-1; when pressure oil is introduced into the rod cavity of the parking hydraulic cylinder 33, the piston rod of the parking hydraulic cylinder 33 moves leftwards to separate the movable plate 32-1 from the fixed plate 32-2, and the vehicle is in a parking brake release state, and when pressure oil is not introduced into the rod cavity of the parking hydraulic cylinder 33, the piston rod of the parking hydraulic cylinder 33 moves rightwards under the action of the spring to combine the movable plate 32-1 with the fixed plate 32-2, so that the vehicle is in a parking brake state. An oil inlet port P of the manual reversing valve 34 is communicated with the energy accumulator 31, and an execution port A of the manual reversing valve 34 is communicated with a rod cavity of the parking hydraulic cylinder 33; the accumulator 31 communicates with a charge valve on the vehicle, which communicates with a hydraulic pump on the vehicle, which automatically charges the accumulator 31 through the charge valve when the pressure in the accumulator 31 drops to a lower limit set by the charge valve. When the vehicle needs to release the parking brake, the manual reversing valve 34 is operated, the oil inlet P port of the manual reversing valve 34 is communicated with the execution port A port, the pressure oil in the energy accumulator 31 reaches the rod cavity of the parking hydraulic cylinder 33 through the manual reversing valve 34, the piston rod of the parking hydraulic cylinder 33 moves leftwards to separate the moving plate 32-1 from the static plate 32-2, and the vehicle is in a parking brake release state. When the vehicle needs parking braking, the manual reversing valve 34 is operated, an execution port A of the manual reversing valve 34 is communicated with an oil return port T, pressure oil in a rod cavity of the parking hydraulic cylinder 33 returns to an oil tank through the manual reversing valve 34, a piston rod of the parking hydraulic cylinder 33 moves rightwards under the action of a spring to enable the movable plate 32-1 to be combined with the static plate 32-2, and the vehicle is in a parking braking state. When the driver starts driving without releasing the parking brake, the moving plate 32-1 and the static plate 32-2 are accelerated to wear, and the service life of the parking brake is short.
Disclosure of Invention
The invention aims to provide a parking brake device of a vehicle, which has a long service life of a parking brake.
In order to achieve the purpose, the invention adopts the following technical scheme: a parking brake device of a vehicle comprises an energy accumulator, a parking brake, a parking hydraulic cylinder and a manual reversing valve; the parking brake comprises a plurality of moving plates and a plurality of static plates; the moving plates and the static plates are arranged alternately; the right end of a piston rod of the parking hydraulic cylinder abuts against the moving plate; an oil inlet P port of the manual reversing valve is communicated with an energy accumulator;
the device also comprises an electromagnetic valve, a pressure sensor, a Hall sensor, an induction piece and a main controller; an execution port A of the manual reversing valve is respectively communicated with a pressure sensor and a first oil inlet P1 of the electromagnetic valve; a second oil inlet P2 of the electromagnetic valve is communicated with the energy accumulator, and an execution port A of the electromagnetic valve is communicated with a rod cavity of the parking hydraulic cylinder; the terminal K end of the electromagnetic valve, the pressure sensor and the Hall sensor are all electrically connected or wirelessly communicated with the main controller; when the pressure value of the pressure sensor is smaller than the set pressure value in the main controller and the rotating speed value of the Hall sensor is larger than 0rpm, the main controller controls the terminal K end of the electromagnetic valve to be electrified, and the second oil inlet P2 of the electromagnetic valve is communicated with the opening A of the execution opening; when the pressure value of the pressure sensor is larger than or equal to the set pressure value in the main controller, or the rotating speed value of the Hall sensor is 0rpm, the main controller controls the terminal K end of the electromagnetic valve to lose power, and the first oil inlet P1 of the electromagnetic valve is communicated with the opening A of the execution opening.
The invention has the following positive effects: 1) the port A of the execution port of the manual reversing valve is respectively communicated with the pressure sensor and the port P1 of the first oil inlet of the electromagnetic valve; a second oil inlet P2 of the electromagnetic valve is communicated with the energy accumulator, and an execution port A of the electromagnetic valve is communicated with a rod cavity of the parking hydraulic cylinder; the terminal K end of the electromagnetic valve, the pressure sensor and the Hall sensor are all electrically connected or wirelessly communicated with the main controller; when the pressure value of the pressure sensor is smaller than the set pressure value in the main controller and the rotating speed value of the Hall sensor is larger than 0rpm, the terminal K end of the electromagnetic valve is controlled by the main controller to be electrified, therefore, when the parking brake is not released before the vehicle starts to run and the vehicle starts to run, the port A of the execution port of the manual reversing valve is communicated with the oil return port T, the pressure value of the pressure sensor is smaller than the set pressure value in the main controller, the rotating speed value of the Hall sensor is larger than 0rpm, at the moment, the main controller controls the terminal K end of the electromagnetic valve to be electrified, the second oil inlet P2 of the electromagnetic valve is communicated with the opening A of the execution opening, the pressure oil in the energy accumulator reaches the rod cavity of the parking hydraulic cylinder through the electromagnetic valve, the piston rod of the parking hydraulic cylinder moves leftwards to separate the moving plate from the static plate, that is, when the parking brake is not released before the vehicle starts running and the vehicle starts running, the vehicle is automatically placed in the parking brake released state. Therefore, the moving plate and the static plate can not be abraded in an accelerated way, and the service life of the parking brake is longer.
Drawings
FIG. 1 is a schematic diagram of the present invention;
fig. 2 is a schematic diagram of a parking brake apparatus of the related art.
The reference numbers in the above figures are as follows: the hydraulic control system comprises an electromagnetic valve 1, a pressure sensor 2, a Hall sensor 3, a sensing piece 4, a main controller 5, an energy accumulator 31, a parking brake 32, a moving plate 32-1, a fixed plate 32-2, a parking hydraulic cylinder 33 and a manual reversing valve 34.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the examples given.
As shown in fig. 1, a parking brake apparatus of a vehicle includes an accumulator 31, a parking brake 32, a parking cylinder 33, and a manual direction switching valve 34; the parking brake 32 comprises a plurality of moving plates 32-1 and a plurality of static plates 32-2; the moving plates 32-1 and the static plates 32-2 are arranged alternately; the right end of a piston rod of the parking hydraulic cylinder 33 is abutted against the moving plate 32-1; when pressure oil is introduced into a rod cavity of the parking hydraulic cylinder 33, a piston rod of the parking hydraulic cylinder 33 moves leftwards to separate the moving plate 32-1 from the static plate 32-2, and the vehicle is in a parking brake release state; when the rod cavity of the parking hydraulic cylinder 33 is not filled with pressure oil, the piston rod of the parking hydraulic cylinder 33 moves rightwards under the action of the spring so that the movable plate 32-1 is combined with the static plate 32-2, and the vehicle is in a parking braking state. An oil inlet P port of the manual reversing valve 34 is communicated with the energy accumulator 31;
the electromagnetic valve comprises an electromagnetic valve 1, a pressure sensor 2, a Hall sensor 3, an induction piece 4 and a main controller 5; the induction piece 4 is made of magnetic steel, the pressure sensor 2 is a pressure sensor with the model number PT124G-210, the Hall sensor 3 is a Hall rotating speed sensor with the model number WS1-ZS-6, the main controller 5 is a PLC (programmable logic controller), and the main controller 5 is Mitsubishi F3U or Siemens S7-200. An execution port A of the manual reversing valve 34 is respectively communicated with the pressure sensor 2 and a first oil inlet P1 of the electromagnetic valve 1; a second oil inlet P2 of the electromagnetic valve 1 is communicated with the energy accumulator 31, and an execution port A of the electromagnetic valve 1 is communicated with a rod cavity of the parking hydraulic cylinder 33; the terminal K end of the electromagnetic valve 1, the pressure sensor 2 and the Hall sensor 3 are all electrically connected or wirelessly communicated with the main controller 5; when the pressure value of the pressure sensor 2 is smaller than the set pressure value in the main controller 5 and the rotating speed value of the Hall sensor 3 is larger than 0rpm, the main controller 5 controls the terminal K end of the electromagnetic valve 1 to be electrified, and at this time, the second oil inlet P2 of the electromagnetic valve 1 is communicated with the opening A of the execution opening; when the pressure value of the pressure sensor 2 is greater than or equal to the set pressure value in the main controller 5, or the rotating speed value of the hall sensor 3 is 0rpm, the main controller 5 controls the terminal end K of the electromagnetic valve 1 to lose power, and the first oil inlet P1 of the electromagnetic valve 1 is communicated with the opening a of the execution opening.
When the invention is used, the sensing piece 4 is arranged on the hub of the wheel of the vehicle, the Hall sensor 3 is arranged on the frame of the vehicle and corresponds to the sensing piece 4, when the wheel rotates, the sensing piece 4 arranged on the hub of the wheel rotates together, the Hall sensor 3 collects the rotating speed of the wheel through the sensing piece 4, and when the vehicle starts to run, the rotating speed of the wheel collected by the Hall sensor 3 is larger than 0 rpm. The set pressure value in the main controller 5 is the minimum pressure value obtained by the test when the parking brake is released, and in this embodiment, the set pressure value is 3 Mpa. Namely, when the pressure value of the pressure sensor 2 is less than 3Mpa and the rotating speed value of the Hall sensor 3 is more than 0rpm, the main controller 5 controls the terminal K end of the electromagnetic valve 1 to be electrified.
The working principle of the invention is as follows: under normal conditions, when a vehicle needs to release parking brake, the manual reversing valve 34 is operated, an oil inlet P port of the manual reversing valve 34 is communicated with an execution port A port, pressure oil in the energy accumulator 31 reaches the pressure sensor 2 through the manual reversing valve 34, the pressure value of the pressure sensor 2 is larger than the set pressure value in the main controller 5, the main controller 5 controls a terminal K end of the electromagnetic valve 1 to lose electricity, a first oil inlet P1 of the electromagnetic valve 1 is communicated with the execution port A port, the pressure oil in the energy accumulator 31 enters a rod cavity of the parking hydraulic cylinder 33 through the manual reversing valve 34 and the electromagnetic valve 1, a piston rod of the parking hydraulic cylinder 33 moves leftwards to separate a movable piece 32-1 from a fixed piece 32-2, and the vehicle is in a parking brake release state. When the vehicle needs parking braking, because the wheel does not rotate any more at this time, the rotating speed value of the hall sensor 3 is 0rpm, the main controller 5 controls the terminal end K of the electromagnetic valve 1 to lose power, at this time, the first oil inlet P1 of the electromagnetic valve 1 is communicated with the execution port a, the manual reversing valve 34 is operated, the execution port a of the manual reversing valve 34 is communicated with the oil return port T, the oil return port T is communicated with the oil tank, the pressure oil of the rod cavity of the parking hydraulic cylinder 33 passes through the electromagnetic valve 1 and then returns to the oil tank through the manual reversing valve 34, the piston rod of the parking hydraulic cylinder 33 moves rightwards under the action of the spring to enable the movable plate 32-1 to be combined with the fixed plate 32-2, and the vehicle is in a parking braking state.
When the parking brake is not released before the vehicle starts to run, the port A of the execution port of the manual reversing valve 34 is communicated with the oil return port T, the pressure value of the pressure sensor 2 is 0Mpa, the pressure value of the pressure sensor 2 is smaller than the set pressure value in the main controller 5, when the vehicle starts to run, the wheel starts to rotate, the rotating speed value of the Hall sensor 3 is larger than 0rpm, the terminal K end of the electromagnetic valve 1 is controlled to be electrified by the main controller 5, the second oil inlet P2 of the electromagnetic valve 1 is communicated with the port A of the execution port, the pressure oil in the energy accumulator 31 reaches the rod cavity of the parking hydraulic cylinder 33 through the second oil inlet P2 of the electromagnetic valve 1, the piston rod of the parking hydraulic cylinder 33 moves leftwards to separate the movable plate 32-1 from the fixed plate 32-2, and the vehicle is automatically in a parking brake release state. Therefore, even if the parking brake is not released before the vehicle starts to run, the vehicle can be automatically in a parking brake release state as long as the vehicle starts to run, the moving plate 32-1 and the static plate 32-2 cannot be worn at an accelerated speed, and the service life of the parking brake is longer.
Claims (1)
1. A method of operating a parking brake arrangement for a vehicle, the parking brake arrangement comprising an accumulator (31), a parking brake (32), a parking cylinder (33) and a manually operable directional control valve (34); the parking brake (32) comprises a plurality of moving plates (32-1) and a plurality of static plates (32-2); the moving plates (32-1) and the static plates (32-2) are arranged alternately; the right end of a piston rod of the parking hydraulic cylinder (33) is abutted against the moving plate (32-1); an oil inlet P port of the manual reversing valve (34) is communicated with the energy accumulator (31); the method is characterized in that:
the parking brake device also comprises an electromagnetic valve (1), a pressure sensor (2), a Hall sensor (3), an induction piece (4) and a main controller (5); an execution port A of the manual reversing valve (34) is respectively communicated with a pressure sensor (2) and a first oil inlet P1 of the electromagnetic valve (1); a second oil inlet P2 of the electromagnetic valve (1) is communicated with the energy accumulator (31), and an execution port A of the electromagnetic valve (1) is communicated with a rod cavity of the parking hydraulic cylinder (33); the terminal K end of the electromagnetic valve (1), the pressure sensor (2) and the Hall sensor (3) are electrically connected or wirelessly communicated with the main controller (5);
the working method comprises the following steps: when the pressure value of the pressure sensor (2) is smaller than the set pressure value in the main controller (5) and the rotating speed value of the Hall sensor (3) is larger than 0rpm, the main controller (5) controls the terminal K end of the electromagnetic valve (1) to be electrified, the second oil inlet P2 of the electromagnetic valve (1) is communicated with the opening A of the execution opening, the pressure oil in the energy accumulator reaches a rod cavity of the parking hydraulic cylinder through the electromagnetic valve, a piston rod of the parking hydraulic cylinder moves leftwards to separate a moving plate from a static plate, namely, when the parking brake is not released before the vehicle starts to run and the vehicle starts to run, the vehicle is automatically in a parking brake release state;
when the pressure value of the pressure sensor (2) is greater than or equal to the set pressure value in the main controller (5) or the rotating speed value of the Hall sensor (3) is 0rpm, the main controller (5) controls the terminal K end of the electromagnetic valve (1) to lose power, and the first oil inlet P1 of the electromagnetic valve (1) is communicated with the opening A of the execution opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010883472.1A CN111959474A (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle and operating method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810422565.7A CN108482353B8 (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle |
| CN202010883472.1A CN111959474A (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle and operating method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810422565.7A Division CN108482353B8 (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111959474A true CN111959474A (en) | 2020-11-20 |
Family
ID=63353663
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010883472.1A Withdrawn CN111959474A (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle and operating method thereof |
| CN202010883219.6A Withdrawn CN111959473A (en) | 2018-05-05 | 2018-05-05 | Working method of vehicle |
| CN201810422565.7A Active CN108482353B8 (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010883219.6A Withdrawn CN111959473A (en) | 2018-05-05 | 2018-05-05 | Working method of vehicle |
| CN201810422565.7A Active CN108482353B8 (en) | 2018-05-05 | 2018-05-05 | Parking brake device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN111959474A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109532803B (en) * | 2018-12-21 | 2021-09-21 | 常州爱上学教育科技有限公司 | Vehicle brake device |
| CN110254411A (en) * | 2019-06-26 | 2019-09-20 | 刘剑 | The stopping brake control device of vehicle |
| CN112161046B (en) * | 2020-10-29 | 2022-04-12 | 烟台裕华液力机械有限公司 | Hydraulic control system for transmission of engineering vehicle |
| CN112248990B (en) * | 2020-12-24 | 2021-03-26 | 天津所托瑞安汽车科技有限公司 | Pneumatic parking system and parking control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440853A1 (en) * | 1978-11-10 | 1980-06-06 | Coal Industry Patents Ltd | BRAKE CONTROL APPARATUS FOR A MOTOR VEHICLE |
| JPH1170876A (en) * | 1997-08-28 | 1999-03-16 | Hitoshi Fujita | Brake driving device for automobile |
| CN101537831A (en) * | 2009-04-13 | 2009-09-23 | 浙江亚太机电股份有限公司 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
| CN201703368U (en) * | 2010-05-24 | 2011-01-12 | 三一重工股份有限公司 | Parking brake system for vehicle |
| CN106004840A (en) * | 2016-07-29 | 2016-10-12 | 王付民 | Vehicle stopping brake control system |
| CN206278089U (en) * | 2016-11-02 | 2017-06-27 | 郑州宇通客车股份有限公司 | Air-cut-off break parking system and the vehicle using the system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670866B (en) * | 2013-11-21 | 2017-01-11 | 常州科研试制中心有限公司 | Explosion-proof vehicle start-up and flame-out air circuit system and control method thereof |
| CN204355025U (en) * | 2014-11-21 | 2015-05-27 | 常州科研试制中心有限公司 | Railless free-wheeled vehicle power cutoff automatic parking system |
| CN204736836U (en) * | 2015-06-24 | 2015-11-04 | 常州科研试制中心有限公司 | Flame proof rubber tyre vehicle gas protection device |
| CN105667477B (en) * | 2016-04-13 | 2018-01-23 | 武汉科技大学 | A kind of all-wheel steering electric wheel truck line traffic control hydraulic parking braking system |
| CN106882173B (en) * | 2017-02-12 | 2019-03-26 | 福建省白云电力科技有限公司 | The braking method of the parking brake system of dumper |
| CN108706011A (en) * | 2017-05-09 | 2018-10-26 | 朱海燕 | Vehicle block selecting automatic traveling crane system and working method |
-
2018
- 2018-05-05 CN CN202010883472.1A patent/CN111959474A/en not_active Withdrawn
- 2018-05-05 CN CN202010883219.6A patent/CN111959473A/en not_active Withdrawn
- 2018-05-05 CN CN201810422565.7A patent/CN108482353B8/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2440853A1 (en) * | 1978-11-10 | 1980-06-06 | Coal Industry Patents Ltd | BRAKE CONTROL APPARATUS FOR A MOTOR VEHICLE |
| JPH1170876A (en) * | 1997-08-28 | 1999-03-16 | Hitoshi Fujita | Brake driving device for automobile |
| CN101537831A (en) * | 2009-04-13 | 2009-09-23 | 浙江亚太机电股份有限公司 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
| CN201703368U (en) * | 2010-05-24 | 2011-01-12 | 三一重工股份有限公司 | Parking brake system for vehicle |
| CN106004840A (en) * | 2016-07-29 | 2016-10-12 | 王付民 | Vehicle stopping brake control system |
| CN206278089U (en) * | 2016-11-02 | 2017-06-27 | 郑州宇通客车股份有限公司 | Air-cut-off break parking system and the vehicle using the system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108482353A (en) | 2018-09-04 |
| CN108482353B (en) | 2020-12-15 |
| CN111959473A (en) | 2020-11-20 |
| CN108482353B8 (en) | 2021-01-08 |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201120 |
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| WW01 | Invention patent application withdrawn after publication |