CN112124281A - Linkage control device for gear and parking brake of vehicle and working method thereof - Google Patents
Linkage control device for gear and parking brake of vehicle and working method thereof Download PDFInfo
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- CN112124281A CN112124281A CN202011045476.9A CN202011045476A CN112124281A CN 112124281 A CN112124281 A CN 112124281A CN 202011045476 A CN202011045476 A CN 202011045476A CN 112124281 A CN112124281 A CN 112124281A
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- 238000000034 method Methods 0.000 title claims description 7
- 230000003068 static effect Effects 0.000 claims description 26
- 238000011017 operating method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
- B60T15/041—Driver's valves controlling auxiliary pressure brakes, e.g. parking or emergency brakes
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The linkage control device comprises a parking brake, a parking hydraulic cylinder, a manual reversing valve, a gear selection operating valve, a forward gear clutch, a reverse gear clutch, a power element, a shuttle valve, a first hydraulic control reversing valve and a second hydraulic control reversing valve; an execution port A of the gear selection operation valve is respectively communicated with the forward gear clutch and the shuttle valve, an execution port B of the gear selection operation valve is respectively communicated with the reverse gear clutch and the shuttle valve, an oil outlet of the shuttle valve is communicated with an oil inlet of a first hydraulic control reversing valve, and the first hydraulic control reversing valve is communicated with a control port of a second hydraulic control reversing valve; an execution port of the manual reversing valve is respectively communicated with a control port of the first hydraulic control reversing valve and the second hydraulic control reversing valve, and the second hydraulic control reversing valve is communicated with the parking hydraulic cylinder; and the manual reversing valve, the gear selecting operation valve and the second hydraulic control reversing valve are communicated with the power element. The invention can realize that the parking brake can be automatically released after the forward gear or the reverse gear is engaged.
Description
Technical Field
The invention relates to a vehicle, in particular to a linkage control device of a gear and a parking brake of the vehicle and a working method thereof.
Background
As shown in fig. 3, the parking brake apparatus of the prior art includes a power unit 70, a parking brake 50, a parking hydraulic cylinder 51, and a manual directional valve 52; the parking brake 50 includes a plurality of static plates 50-1 and a plurality of moving plates 50-2; the static plates 50-1 and the moving plates 50-2 are arranged alternately; the left end of the piston rod of the parking hydraulic cylinder 51 is close to or against the stator 50-1. When pressure oil is introduced into a rod cavity of the parking hydraulic cylinder 51, the piston rod of the parking hydraulic cylinder 51 moves rightwards to enable the left end of the piston rod of the parking hydraulic cylinder 51 to be close to the static plate 50-1, the static plate 50-1 is separated from the moving plate 50-2, and the vehicle is in a parking brake release state; when pressure oil is not introduced into the rod cavity of the parking hydraulic cylinder 51, the piston rod of the parking hydraulic cylinder 51 moves leftwards under the action of the spring to enable the left end of the piston rod of the parking hydraulic cylinder 51 to be abutted against the static plate 50-1, and then the static plate 50-1 is combined with the moving plate 50-2, so that the vehicle is in a parking braking state. A new type of scraper parking brake system disclosed in chinese patent document CN204004083U (application No. 201420422480.6) belongs to such a parking brake and parking cylinder. An oil inlet P of the manual reversing valve 52 is communicated with the power element 70, an execution port A of the manual reversing valve 52 is communicated with a rod cavity of the parking hydraulic cylinder 51, and an oil return port T of the manual reversing valve 52 is communicated with an oil tank. When the vehicle needs to release the parking brake, the manual reversing valve 52 is operated, an oil inlet P of the manual reversing valve 52 is communicated with an execution port A, pressure oil in the power element 70 reaches a rod cavity of the parking hydraulic cylinder 51 through the manual reversing valve 52, a piston rod of the parking hydraulic cylinder 51 moves rightwards to separate the static plate 50-1 from the moving plate 50-2, and the vehicle is in a parking brake release state; when the vehicle needs parking braking, the manual reversing valve 52 is operated to enable the execution port A of the manual reversing valve 52 to be communicated with the oil return port T, pressure oil in a rod cavity of the parking hydraulic cylinder 51 returns to an oil tank through the oil return port T of the manual reversing valve 52, a piston rod of the parking hydraulic cylinder 51 moves leftwards under the action of a spring to enable the static piece 50-1 to be combined with the movable piece 50-2, and the vehicle is in a parking braking state.
As shown in fig. 4, the gear device in the prior art includes a gear selection operation valve 60, a forward gear clutch 61, a reverse gear clutch 62 and a power element 70, wherein the gear selection operation valve 60 includes an operating lever 60-1, an oil inlet P of the gear selection operation valve 60 is communicated with an oil outlet of the power element 70, an execution port a of the gear selection operation valve 60 is communicated with the forward gear clutch 61, an execution port B of the gear selection operation valve 60 is communicated with the reverse gear clutch 62, and the operating lever 60-1 of the gear selection operation valve 60 is connected with a gear selector located in a cab through a flexible shaft. When a driver operates a gear selector positioned in a cab to be hung on a forward gear, a flexible shaft drives an operating lever 60-1 of a gear selecting operating valve 60 to move, so that an oil inlet P of the gear selecting operating valve 60 is communicated with an execution port A, pressure oil in a power element 70 enters a forward gear clutch 61, the forward gear clutch 61 is combined, and a vehicle is hung on the forward gear; when the driver operates the gear selector in the cab to be hooked on the reverse gear, the flexible shaft drives the operating rod 60-1 of the gear selecting operating valve 60 to move, so that the oil inlet P of the gear selecting operating valve 60 is communicated with the execution port B, the pressure oil in the power element 70 enters the reverse gear clutch 62, the reverse gear clutch 62 is combined, and the vehicle is hooked on the reverse gear. When the driver operates the gear selector of the cab to hang on the neutral gear, the oil inlet P of the gear selecting operation valve 60 is not communicated with the execution port A and the execution port B, the forward gear clutch 61 and the reverse gear clutch 62 are both in a separated state, and the vehicle is hung on the neutral gear.
The parking brake device and the gear device of the vehicle in the prior art can not realize linkage control, and the parking brake can not be automatically released after a driver engages a forward gear or a backward gear, so that when the driver starts to drive after engaging the forward gear or the backward gear and forgets to release the parking brake, the static plate 50-1 and the moving plate 50-2 of the parking brake 50 are still in a combined state, and the static plate 50-1 and the moving plate 50-2 of the parking brake 50 are accelerated to wear when the driver drives, so that the service life of the parking brake 50 is greatly shortened.
Disclosure of Invention
The invention aims to provide a linkage control device of a gear and a parking brake of a vehicle, wherein the gear and the parking brake can be automatically released after a forward gear or a backward gear is engaged.
In order to achieve the purpose, the invention adopts the following technical scheme: a linkage control device for gears and parking brakes of a vehicle comprises a parking brake, a parking hydraulic cylinder, a manual reversing valve, a gear selecting operation valve, a forward gear clutch, a reverse gear clutch and a power element; the parking brake comprises a plurality of static sheets and a plurality of moving sheets; the static sheets and the moving sheets are arranged at intervals; the left end of a piston rod of the parking hydraulic cylinder is close to or abutted against the static sheet; the operating lever of the gear selecting operating valve is connected with a gear selector positioned in a cab through a flexible shaft;
the shuttle valve, the first hydraulic control reversing valve and the second hydraulic control reversing valve are further included; an execution port A of the gear selecting operation valve is respectively communicated with a first oil inlet A of the forward gear clutch and a first oil inlet A of the shuttle valve, an execution port B of the gear selecting operation valve is respectively communicated with a second oil inlet C of the backward gear clutch and the second oil inlet C of the shuttle valve, an oil outlet B of the shuttle valve is communicated with an oil inlet P of the first hydraulic control reversing valve, and the execution port A of the first hydraulic control reversing valve is communicated with a control port K of the second hydraulic control reversing valve; an execution port A of the manual reversing valve is respectively communicated with a control port K of the first hydraulic control reversing valve and a first oil inlet P1 of the second hydraulic control reversing valve, and the execution port A of the second hydraulic control reversing valve is communicated with a rod cavity of the parking hydraulic cylinder; and an oil inlet P of the manual reversing valve, an oil inlet P of the gear selecting operation valve and a second oil inlet P2 of the second hydraulic control reversing valve are communicated with an oil outlet of the power element.
The power element comprises an energy accumulator; and the oil inlet P of the manual reversing valve, the oil inlet P of the gear selecting operation valve and the second oil inlet P2 of the second hydraulic control reversing valve are communicated with an oil outlet of the energy accumulator.
The power element comprises a hydraulic pump and an oil tank; an oil inlet of the hydraulic pump is communicated with an oil tank; and an oil inlet P of the manual reversing valve, an oil inlet P of the gear selecting operation valve and a second oil inlet P2 of the second hydraulic control reversing valve are communicated with an oil outlet of the hydraulic pump.
The device also comprises a filter; the filter is arranged on an oil channel from the oil tank to an oil inlet of the hydraulic pump.
Also includes a safety valve; the safety valve is arranged on an oil channel from an oil outlet of the hydraulic pump to the oil tank.
The invention has the following positive effects: 1) because the execution port A of the gear selecting operation valve is respectively communicated with the first oil inlets A of the forward gear clutch and the shuttle valve, the execution port B of the gear selecting operation valve is respectively communicated with the second oil inlets C of the reverse gear clutch and the shuttle valve, the oil outlet B of the shuttle valve is communicated with the oil inlet P of the first hydraulic control reversing valve, and the execution port A of the first hydraulic control reversing valve is communicated with the control port K of the second hydraulic control reversing valve; an execution port A of the manual reversing valve is respectively communicated with a control port K of the first hydraulic control reversing valve and a first oil inlet P1 of the second hydraulic control reversing valve, and the execution port A of the second hydraulic control reversing valve is communicated with a rod cavity of the parking hydraulic cylinder; the oil inlet P of the manual reversing valve, the oil inlet P of the gear selecting operation valve and the second oil inlet P2 of the second hydraulic control reversing valve are all communicated with the oil outlet of the power element, therefore, when a driver starts driving after engaging forward gear or backward gear, but forgets to remove parking brake, the execution port A of the manual reversing valve is communicated with the oil return port T, the control port K of the first hydraulic control reversing valve does not have pressure oil, the oil inlet P of the first hydraulic control reversing valve is communicated with the execution port A, the pressure oil in the power element can pass through the execution port A of the gear selecting operation valve, then pass through the first oil inlet A of the shuttle valve and then reach the control port K of the second hydraulic control reversing valve through the first hydraulic control reversing valve, or the pressure oil in the power element passes through the execution port B of the gear selecting operation valve, then pass through the second oil inlet C of the shuttle valve and then reach the control port K of the second hydraulic control reversing valve through the first hydraulic control valve, so that the second oil inlet P2 of the second hydraulic control reversing valve is communicated with, pressure oil in the power element reaches a rod cavity of the parking hydraulic cylinder through a second oil inlet P2 of the second hydraulic control reversing valve, a piston rod of the parking hydraulic cylinder moves rightwards to separate a static sheet and a moving sheet, and the vehicle is in a parking brake release state.
Drawings
FIG. 1 is a schematic diagram of the present invention wherein the power element includes a hydraulic pump and an oil tank;
FIG. 2 is another schematic of the present invention wherein the power element includes an accumulator;
FIG. 3 is a schematic diagram of a prior art parking brake arrangement;
fig. 4 is a schematic diagram of a prior art gear device.
The reference numbers in the above figures are as follows: the hydraulic control system comprises a shuttle valve 1, a first hydraulic control reversing valve 2, a second hydraulic control reversing valve 3, a parking brake 50, a static plate 50-1, a moving plate 50-2, a parking hydraulic cylinder 51, a manual reversing valve 52, a gear selecting operation valve 60, a control lever 60-1, a forward gear clutch 61, a reverse gear clutch 62 and a power unit 70.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the examples given.
As shown in fig. 1 and 2, a linkage control device of a gear and a parking brake of a vehicle includes a parking brake 50, a parking hydraulic cylinder 51, a manual directional valve 52, a gear selection operation valve 60, a forward clutch 61, a reverse clutch 62 and a power element 70; the parking brake 50 comprises a plurality of static plates 50-1 and a plurality of moving plates 50-2; the static plates 50-1 and the moving plates 50-2 are arranged alternately; the left end of a piston rod of the parking hydraulic cylinder 51 is close to or abutted against the static sheet 50-1; the operating lever 60-1 of the gear selecting operating valve 60 is connected with a gear selector in a cab through a flexible shaft;
the hydraulic control reversing valve further comprises a shuttle valve 1, a first hydraulic control reversing valve 2 and a second hydraulic control reversing valve 3; an execution port A of the gear selecting operation valve 60 is respectively communicated with a forward gear clutch 61 and a first oil inlet A of the shuttle valve 1, an execution port B of the gear selecting operation valve 60 is respectively communicated with a reverse gear clutch 62 and a second oil inlet C of the shuttle valve 1, an oil outlet B of the shuttle valve 1 is communicated with an oil inlet P of the first hydraulic control reversing valve 2, and the execution port A of the first hydraulic control reversing valve 2 is communicated with a control port K of the second hydraulic control reversing valve 3; when pressure oil is not introduced into the control port K of the first hydraulic control reversing valve 2, the oil inlet P of the first hydraulic control reversing valve 2 is communicated with the execution port A; when the control port K of the first hydraulic control reversing valve 2 is filled with pressure oil, the oil inlet P of the first hydraulic control reversing valve 2 is not communicated with the execution port A. The execution port A of the manual reversing valve 52 is respectively communicated with the control port K of the first hydraulic control reversing valve 2 and the first oil inlet P1 of the second hydraulic control reversing valve 3, and the execution port A of the second hydraulic control reversing valve 3 is communicated with the rod cavity of the parking hydraulic cylinder 51; when pressure oil is not introduced into the control port K of the second hydraulic control reversing valve 3, the first oil inlet P1 of the second hydraulic control reversing valve 3 is communicated with the execution port A; when the control port K of the second hydraulic control reversing valve 3 is communicated with pressure oil, the second oil inlet P2 of the second hydraulic control reversing valve 3 is communicated with the execution port A. The oil inlet P of the manual reversing valve 52, the oil inlet P of the gear selecting operation valve 60 and the second oil inlet P2 of the second hydraulic control reversing valve 3 are all communicated with the oil outlet of the power element 70.
As shown in fig. 2, the power element 70 includes an accumulator 71; the oil inlet P of the manual reversing valve 52, the oil inlet P of the gear selecting operation valve 60 and the second oil inlet P2 of the second hydraulic control reversing valve 3 are all communicated with the oil outlet of the energy accumulator 71.
As shown in fig. 1, the power unit 70 includes a hydraulic pump 72 and an oil tank 73; an oil inlet of the hydraulic pump 72 is communicated with an oil tank 73; the oil inlet P of the manual reversing valve 52, the oil inlet P of the gear selecting operation valve 60 and the second oil inlet P2 of the second hydraulic control reversing valve 3 are all communicated with the oil outlet of the hydraulic pump 72.
A filter 74 is also included; the filter 74 is provided on an oil passage from the oil tank 73 to an oil inlet of the hydraulic pump 72.
Also included is a safety valve 75; the relief valve 75 is provided on an oil passage from an oil outlet of the hydraulic pump 72 to the oil tank 73.
The working principle of the invention is as follows: as shown in fig. 1 and fig. 2, when the driver starts driving after engaging the forward gear or the reverse gear but forgets to release the parking brake, the vehicle is still in the parking brake state, i.e., the actuating port a of the manual directional valve 52 is communicated with the oil return port T, and the actuating port a of the manual directional valve 52 does not have pressure oil. Since the execution port a of the manual directional control valve 52 is communicated with the control port K of the first pilot-controlled directional control valve 2, the control port K of the first pilot-controlled directional control valve 2 also does not have pressure oil, and the oil inlet P of the first pilot-controlled directional control valve 2 is communicated with the execution port a. Since the vehicle is in forward gear or reverse gear at this time, that is, the oil inlet P of the gear selecting operation valve 60 is communicated with the execution port a or the oil inlet P of the gear selecting operation valve 60 is communicated with the execution port B, the pressure oil in the power element 70 can pass through the execution port a of the gear selecting operation valve 60, then pass through the first oil inlet a of the shuttle valve 1, then pass through the first pilot operated directional control valve 2 to reach the control port K of the second pilot operated directional control valve 3, or the pressure oil in the power element 70 passes through the execution port B of the gear selecting operation valve 60, then pass through the second oil inlet C of the shuttle valve 1, then pass through the first pilot operated directional control valve 2 to reach the control port K of the second pilot operated directional control valve 3, so that the second oil inlet P2 of the second pilot operated directional control valve 3 is communicated with the execution port a, the pressure oil in the power element 70 passes through the second oil inlet P2 of the second pilot operated directional control valve 3 to reach the rod chamber of the parking hydraulic cylinder 51, the piston rod of the parking hydraulic cylinder 51 moves rightward so that the, when the driver forgets to release the parking brake, the parking brake can be automatically released as long as the vehicle is in a forward gear or a reverse gear, so that the static plate 50-1 and the moving plate 50-2 of the parking brake 50 are not combined during driving, the static plate 50-1 and the moving plate 50-2 of the parking brake 50 are not accelerated to wear, and the service life of the parking brake 50 is prolonged.
When a driver starts driving after engaging a forward gear or a reverse gear and releases parking brake, an oil inlet P of the manual reversing valve 52 is communicated with an execution port A, pressure oil in the power element 70 can reach a control port K of the first hydraulic control reversing valve 2 through the manual reversing valve 52, so that the control port K of the first hydraulic control reversing valve 2 is provided with the pressure oil, the oil inlet P of the first hydraulic control reversing valve 2 is not communicated with the execution port A, the pressure oil in the power element 70 cannot reach the control port K of the second hydraulic control reversing valve 3 through the first hydraulic control reversing valve 2, the control port K of the second hydraulic control reversing valve 3 is not provided with the pressure oil, a first oil inlet P1 of the second hydraulic control reversing valve 3 is communicated with the execution port A, the pressure oil in the power element 70 reaches a rod cavity of the parking hydraulic cylinder 51 through the manual reversing valve 52 and a first oil inlet P1 of the second hydraulic control reversing valve 3, and a piston rod of the parking hydraulic cylinder 51 moves to the right, so that a static blade 50-1 is separated from a movable blade 50-2, the vehicle is in a parking brake released state, and the vehicle can normally run.
When the vehicle needs to be braked after being stopped, the vehicle is hung on a neutral gear at this time, namely the oil inlet P of the gear selecting operation valve 60 is not communicated with the execution port A and the execution port B, the pressure oil in the power element 70 can not reach the control port K of the second hydraulic control reversing valve 3 through the gear selecting operation valve 60, the control port K of the second hydraulic control reversing valve 3 does not have the pressure oil, so that the first oil inlet P1 of the second hydraulic control reversing valve 3 is communicated with the execution port A, when the driver operates the manual directional control valve 52 to communicate the actuating port a of the manual directional control valve 52 with the oil return port T, the pressure oil in the rod cavity of the parking hydraulic cylinder 51 returns to the oil tank through the second hydraulic control reversing valve 3 and the oil return port T of the manual reversing valve 52, the piston rod of the parking hydraulic cylinder 51 moves leftwards under the action of the spring to enable the static piece 50-1 and the moving piece 50-2 to be combined, and the vehicle is in a parking braking state. I.e. the vehicle can be braked normally.
Claims (3)
1. A working method of a linkage control device of a gear and a parking brake of a vehicle comprises a parking brake (50), a parking hydraulic cylinder (51), a manual reversing valve (52), a gear selection operation valve (60), a forward gear clutch (61), a reverse gear clutch (62) and a power element (70); the parking brake (50) comprises a plurality of static sheets (50-1) and a plurality of moving sheets (50-2); the static plates (50-1) and the moving plates (50-2) are arranged alternately; the left end of a piston rod of the parking hydraulic cylinder (51) is close to or abutted against the static sheet (50-1); the operating lever (60-1) of the gear selecting operating valve (60) is connected with a gear selector in a cab through a flexible shaft; the method is characterized in that: the hydraulic control reversing valve further comprises a shuttle valve (1), a first hydraulic control reversing valve (2) and a second hydraulic control reversing valve (3); an execution port A of the gear selecting operation valve (60) is communicated with a first oil inlet A of the forward gear clutch (61) and a first oil inlet A of the shuttle valve (1) respectively, an execution port B of the gear selecting operation valve (60) is communicated with a second oil inlet C of the reverse gear clutch (62) and the shuttle valve (1) respectively, an oil outlet B of the shuttle valve (1) is communicated with an oil inlet P of the first hydraulic control reversing valve (2), and an execution port A of the first hydraulic control reversing valve (2) is communicated with a control port K of the second hydraulic control reversing valve (3); an execution port A of the manual reversing valve (52) is respectively communicated with a control port K of the first hydraulic control reversing valve (2) and a first oil inlet P1 of the second hydraulic control reversing valve (3), and an execution port A of the second hydraulic control reversing valve (3) is communicated with a rod cavity of the parking hydraulic cylinder (51); an oil inlet P of the manual reversing valve (52), an oil inlet P of the gear selecting operation valve (60) and a second oil inlet P2 of the second hydraulic control reversing valve (3) are communicated with an oil outlet of the power element (70);
the working method comprises the following steps: when a driver starts driving after engaging a forward gear but forgets to release parking brake, at the moment, an execution port A of a manual reversing valve is communicated with an oil return port T, a control port K of a first hydraulic control reversing valve does not have pressure oil, an oil inlet P of the first hydraulic control reversing valve is communicated with the execution port A, the pressure oil in a power element passes through the execution port A of a gear selection operation valve, then passes through a first oil inlet A of a shuttle valve and then reaches a control port K of a second hydraulic control reversing valve through the first hydraulic control reversing valve, so that a second oil inlet P2 of the second hydraulic control reversing valve is communicated with the execution port A, the pressure oil in the power element reaches a rod cavity of a parking hydraulic cylinder through a second oil inlet P2 of the second hydraulic control reversing valve, a piston rod of the parking hydraulic cylinder moves rightwards to separate a static plate from a moving plate, and the vehicle is in a parking brake release state.
2. The method of operation of claim 1, wherein: the power element (70) comprises an accumulator (71); an oil inlet P of the manual reversing valve (52), an oil inlet P of the gear selecting operation valve (60) and a second oil inlet P2 of the second hydraulic control reversing valve (3) are communicated with an oil outlet of the energy accumulator (71).
3. The operating method of a vehicle according to claim 1, characterized in that: the power element (70) comprises a hydraulic pump (72) and an oil tank (73); an oil inlet of the hydraulic pump (72) is communicated with an oil tank (73); an oil inlet P of the manual reversing valve (52), an oil inlet P of the gear selecting operation valve (60) and a second oil inlet P2 of the second hydraulic control reversing valve (3) are communicated with an oil outlet of the hydraulic pump (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011045476.9A CN112124281A (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle and working method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011045476.9A CN112124281A (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle and working method thereof |
| CN201810976087.4A CN108909699B (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810976087.4A Division CN108909699B (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112124281A true CN112124281A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810976087.4A Active CN108909699B (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
| CN202011046880.8A Pending CN112124282A (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
| CN202011045476.9A Pending CN112124281A (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle and working method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810976087.4A Active CN108909699B (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
| CN202011046880.8A Pending CN112124282A (en) | 2018-08-25 | 2018-08-25 | Linkage control device for gear and parking brake of vehicle |
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| CN (3) | CN108909699B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488759A (en) * | 2018-11-05 | 2019-03-19 | 袁菊花 | The gear control device of vehicle |
| CN109515413B (en) * | 2018-12-21 | 2021-06-04 | 泰州市语奇机车有限公司 | Braking and gear device for vehicle |
| CN110242634A (en) * | 2019-06-16 | 2019-09-17 | 刘剑 | The truck-mounted drilling rig device of vehicle |
| CN110254411A (en) * | 2019-06-26 | 2019-09-20 | 刘剑 | The stopping brake control device of vehicle |
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| Publication number | Publication date |
|---|---|
| CN108909699A (en) | 2018-11-30 |
| CN108909699B (en) | 2020-11-10 |
| CN112124282A (en) | 2020-12-25 |
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