CN201703368U - Parking brake system for vehicle - Google Patents

Parking brake system for vehicle Download PDF

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Publication number
CN201703368U
CN201703368U CN2010202007303U CN201020200730U CN201703368U CN 201703368 U CN201703368 U CN 201703368U CN 2010202007303 U CN2010202007303 U CN 2010202007303U CN 201020200730 U CN201020200730 U CN 201020200730U CN 201703368 U CN201703368 U CN 201703368U
Authority
CN
China
Prior art keywords
parking brake
control port
electric valve
solenoid electric
during standstill
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.)
Expired - Fee Related
Application number
CN2010202007303U
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Chinese (zh)
Inventor
李天富
费望龙
黄志建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany Heavy Industry Co Ltd
Original Assignee
Sany Heavy Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sany Heavy Industry Co Ltd filed Critical Sany Heavy Industry Co Ltd
Priority to CN2010202007303U priority Critical patent/CN201703368U/en
Application granted granted Critical
Publication of CN201703368U publication Critical patent/CN201703368U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a parking brake system for a vehicle, comprising a parking brake and a parking brake electromagnetic control valve, wherein the parking brake electromagnetic control valve is connected with the parking brake by an oil path; the oil path between the parking brake electromagnetic control valve and the parking brake is connected with a pressure maintaining/pressure relieving device in series; and the pressure maintaining/pressure relieving device is provided with a pressure maintaining control port leading the parking brake to be in loose state and a pressure relieving control port for leading the parking brake to be in brake state. The utility model relates to a parking brake system which is simple and compact in structure and low in cost, can prolong the service life of the electromagnetic control valve and improve the safety and reliability of the whole vehicle.

Description

The vehicle emergency brake system
Technical field
The utility model is mainly concerned with the motor vehicle braking system field, refers in particular to a kind of parking control system.
Background technology
At present, in existing vehicle braking during standstill one be to realize by hydraulic driving mode, be example with the construction machinery and equipment of walking certainly, in the process of moving, the hydraulic electromagnetic control cock of its emergency brake system need keep electricly always, is in open mode to keep Parking Brake.In this structure, the phenomenon of coil heating power is very serious in the hydraulic electromagnetic control cock, if hydraulic electromagnetic control cock surrounding environment is unfavorable for heat-dissipation words, very easily cause coil temperature to raise and burn, finally have influence on the service life of hydraulic electromagnetic control cock and the overall security of vehicle.
The utility model content
The technical problems to be solved in the utility model just is: at the technical matters that prior art exists, the utility model provide a kind of simple and compact for structure, with low cost, can prolong the solenoid electric valve life-span, improve the vehicle emergency brake system of car load safety and reliability.
For solving the problems of the technologies described above, the utility model by the following technical solutions.
A kind of vehicle emergency brake system, comprise Parking Brake and braking during standstill solenoid electric valve, described braking during standstill solenoid electric valve links to each other with Parking Brake by oil circuit, it is characterized in that: be in series with pressurize/pressure relief device on the oil circuit between described braking during standstill solenoid electric valve and the Parking Brake, described pressurize/pressure relief device is provided with and makes Parking Brake be in the holding pressure control port of releasing orientation and make Parking Brake be in the release control port of braking mode.
As further improvement of the utility model:
Described holding pressure control port is to make the check valve of hydraulic oil from the braking during standstill solenoid electric valve to the unidirectional conducting of Parking Brake.
Described release control port is to make the oil diverting port of hydraulic oil from the braking during standstill solenoid electric valve to the Parking Brake two-way admittance.
Be in series with pressure relay on the oil circuit between described holding pressure control port and the Parking Brake, described pressure relay detects the force value in the oil circuit in real time and controls the energising or the outage of braking during standstill solenoid electric valve.
Described pressurize/pressure relief device is provided with the control handle that switches holding pressure control port and release control port.
The handle interlock of travelling of described pressurize/pressure relief device and vehicle.
Compared with prior art, advantage of the present utility model just is:
1, the utility model is simple and compact for structure, with low cost, by pressurize/pressure relief device of outlet series connection at the braking during standstill solenoid electric valve, make the braking during standstill solenoid electric valve not need to be in for a long time "on" position, come pressurize to make Parking Brake be in releasing orientation by pressurize/pressure relief device, the solenoid electric valve life-span not only can be prolonged, car load safety and reliability can also be improved.
2, the utility model further adopts pressure relay to detect pressure in the total system oil circuit in good time, if being lower than safety value then gets electric to the additional fluid of Parking Brake by the braking during standstill solenoid electric valve, like this braking during standstill solenoid electric valve electricity condition just by always electric become instantaneous must, thereby shorten electrification time greatly, increase the service life.
Description of drawings
Fig. 1 is the control principle scheme drawing of a kind of embodiment of the utility model;
Fig. 2 is the control principle scheme drawing of the another kind of embodiment of the utility model.
Marginal data
1, braking during standstill solenoid electric valve; 2, pressurize/pressure relief device; 21, holding pressure control port; 22, release control port; 23, control handle; 3, pressure relay; 4, Parking Brake; 5, the handle that travels.
The specific embodiment
Below with reference to specific embodiment and Figure of description the utility model is described in further details.
As shown in Figure 1, a kind of vehicle emergency brake system of the utility model, comprise Parking Brake 4 and braking during standstill solenoid electric valve 1, braking during standstill solenoid electric valve 1 links to each other with Parking Brake 4 by oil circuit, the oil inlet of braking during standstill solenoid electric valve 1 is connected with oil sources, the oil outlet of braking during standstill solenoid electric valve 1 links to each other with Parking Brake 4 by oil circuit, braking during standstill solenoid electric valve 1 is used for controlling the switching of whole oil circuit, when braking during standstill solenoid electric valve 1 dead electricity, the oil circuit that enters from oil sources is blocked; When braking during standstill solenoid electric valve 1 the fluid that enters from oil sources when electric goes to follow-up oil circuit, Parking Brake 4 is backed down, thereby gets ready for vehicle to run.The oil suction chamber oil circuit of Parking Brake 4 is communicated with the oil outlet of pressurize/pressure relief device 2, and the quantity of Parking Brake 4 is not limit, and is to be connected in parallel.Be in series with pressurize/pressure relief device 2 on the oil circuit between braking during standstill solenoid electric valve 1 and the Parking Brake 4, pressurize/pressure relief device 2 is provided with and makes Parking Brake 4 be in the holding pressure control port 21 of releasing orientation and make Parking Brake 4 be in the release control port 22 of braking mode, holding pressure control port 21 is for making the check valve of hydraulic oil 4 unidirectional conductings from braking during standstill solenoid electric valve 1 to Parking Brake, and release control port 22 is for making the oil diverting port of hydraulic oil 4 two-way admittances from braking during standstill solenoid electric valve 1 to Parking Brake.Utilize the pressurize interaction energy of check valve to make Parking Brake 4 keep releasing orientations, thereby make the braking during standstill solenoid electric valve 1 can dead electricity.After vehicle stops, when needing Parking Brake 4 lockings, switch to oil diverting port, oil circuit directly is communicated with, braking during standstill solenoid electric valve 1 off-load of the pressure oil of Parking Brake 4 after pressurize/pressure relief device 2 and dead electricity, vehicle is realized braking during standstill.Referring to Fig. 1, pressurize/pressure relief device 2 is provided with the control handle 23 that switches holding pressure control port 21 and release control port 22; Perhaps referring to Fig. 2, pressurize/pressure relief device 2 also can link with the handle 5 that travels of vehicle, realizes the switching of holding pressure control port 21 and release control port 22.
In the present embodiment, also be in series with pressure relay 3 on the oil circuit between holding pressure control port 21 and the Parking Brake 4, pressure relay 3 detects the force value in the oil circuit in real time and controls the energising or the outage of braking during standstill solenoid electric valve 1.In the process of moving if the pressure in the system oil-way is lower than the safe pressure value of setting in the pressure relay 3, then controlling braking during standstill solenoid electric valve 1 gets, replenishment system is because of the fluid of other reasonses such as leakage losses, make pressure in the system oil-way be higher than the safety value that sets after braking during standstill solenoid electric valve 1 cut off the power supply again.
Present embodiment is an example with the application project vehicle, describes its working process in detail:
1, the preparation of travelling: pressurize/pressure relief device 2 is by the manual or electronic position, a left side (being the check valve side) that switches to.This class of operation is similar to the parking brake of automobile.
2, travel: when the handle 5 that travels of driver's operation vehicle leaves meta, braking during standstill solenoid electric valve 1 electric, after the check valve of pressure oil liquid by pressurize/pressure relief device 2 enters Parking Brake 4 brake is unclamped, vehicle enters motoring condition.Pressure relay 3 is according to the on/off electricity condition of the operation pressure of Parking Brake 4 control braking during standstill solenoid electric valve 1 in the process of moving, and the pine pressure of stopping is maintained in the safety zone.When if pressure is higher than wherein setting value P2,1 outage of braking during standstill solenoid electric valve, Parking Brake 4 stays open state by the check valve pressurize of pressurize/pressure relief device 2.If when being lower than a certain safety value P1 because of the operation pressure of reason Parking Brakes 4 such as leakages, then braking during standstill solenoid electric valve 1 energising, system is higher than P2 to Parking Brake 4 additional fluid until pressure.Like this, in whole driving process, the operation pressure of Parking Brake 4 just can maintain between P1~P2.
3, " time-out " operating mode such as traffic lights: driver's operation is travelled in the handle 5 times, the propulsion source of vehicle ' is cut off (driving Hydraulic Pump swash plate makes zero or power-transfer clutch disconnects), pressurize/pressure relief device 2 still is the work of position, a left side, vehicle can lean on service brake (being in a ratio of another set of brake system with Parking Brake 4) emergency, and some low speed engineering equipment only depends on and cuts off propulsion source in the handle 5 times of travelling and get final product emergency.For some engineering equipment that does not have the service brake system and need overcome vehicle inertia, it is (manual or electronic that back pressurize/pressure relief device 2 switched to right position during handle returned, as with the handle 5 times of travelling in operations linkage), detecting pressurize/pressure relief device 2 switches to the incoming signal that has precedence over pressure relay 3 behind the right position and makes braking during standstill solenoid electric valve 1 dead electricity, fluid in the Parking Brake 4 carries out off-load, brake locking.
4, braking during standstill (the long-time parking), in two kinds of situation:
A) for aforementioned thirdly in pressurize/pressure relief device 2 not with the situation of handle 5 interlocks of travelling (back pressurize/pressure relief device 2 is still in the work of position, a left side in the handle 5 times of promptly travelling), need chaufeur that pressurize/pressure relief device 2 is switched to right position (manual or electronic) after the parking, detecting pressurize/pressure relief device 2 switches to the incoming signal that has precedence over pressure relay 3 behind the right position and makes braking during standstill solenoid electric valve 1 dead electricity, fluid off-load in the Parking Brake 4, brake locking.This class of operation is similar to the parking brake of automobile.
B) pressurize/pressure relief device 2 and handle 5 interlocks of travelling: in the handle 5 times of travelling, pressurize/pressure relief device 2 switches to right position, detecting pressurize/pressure relief device 2 switches to the incoming signal that has precedence over pressure relay 3 behind the right position and makes braking during standstill solenoid electric valve 1 dead electricity, fluid off-load in the Parking Brake 4, brake locking.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (8)

1. vehicle emergency brake system, comprise Parking Brake (4) and braking during standstill solenoid electric valve (1), described braking during standstill solenoid electric valve (1) links to each other with Parking Brake (4) by oil circuit, it is characterized in that: be in series with pressurize/pressure relief device (2) on the oil circuit between described braking during standstill solenoid electric valve (1) and the Parking Brake (4), described pressurize/pressure relief device (2) is provided with and makes Parking Brake (4) be in the holding pressure control port (21) of releasing orientation and make Parking Brake (4) be in the release control port (22) of braking mode.
2. vehicle emergency brake system according to claim 1 is characterized in that: described holding pressure control port (21) is for making the check valve of hydraulic oil from braking during standstill solenoid electric valve (1) to the unidirectional conducting of Parking Brake (4).
3. vehicle emergency brake system according to claim 1 is characterized in that: described release control port (22) is for making the oil diverting port of hydraulic oil from braking during standstill solenoid electric valve (1) to Parking Brake (4) two-way admittance.
4. according to claim 1 or 2 or 3 described vehicle emergency brake systems, it is characterized in that: be in series with pressure relay (3) on the oil circuit between described holding pressure control port (21) and the Parking Brake (4), described pressure relay (3) detects the force value in the oil circuit in real time and controls the energising or the outage of braking during standstill solenoid electric valve (1).
5. according to claim 1 or 2 or 3 described vehicle emergency brake systems, it is characterized in that: described pressurize/pressure relief device (2) is provided with the control handle (23) that switches holding pressure control port (21) and release control port (22).
6. vehicle emergency brake system according to claim 4 is characterized in that: described pressurize/pressure relief device (2) is provided with the control handle (23) that switches holding pressure control port (21) and release control port (22).
7. according to claim 1 or 2 or 3 described vehicle emergency brake systems, it is characterized in that: described pressurize/pressure relief device (2) is gone up the switching of holding pressure control port (21) and release control port (22) and the handle that travels (5) interlock of vehicle.
8. vehicle emergency brake system according to claim 4 is characterized in that: described pressurize/pressure relief device (2) is gone up the switching of holding pressure control port (21) and release control port (22) and the handle that travels (5) interlock of vehicle.
CN2010202007303U 2010-05-24 2010-05-24 Parking brake system for vehicle Expired - Fee Related CN201703368U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202007303U CN201703368U (en) 2010-05-24 2010-05-24 Parking brake system for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010202007303U CN201703368U (en) 2010-05-24 2010-05-24 Parking brake system for vehicle

Publications (1)

Publication Number Publication Date
CN201703368U true CN201703368U (en) 2011-01-12

Family

ID=43440520

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010202007303U Expired - Fee Related CN201703368U (en) 2010-05-24 2010-05-24 Parking brake system for vehicle

Country Status (1)

Country Link
CN (1) CN201703368U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109249921A (en) * 2017-07-12 2019-01-22 罗伯特·博世有限公司 For being executed the control device and method of parking function by means of the hydraulic braking system of vehicle
CN111959473A (en) * 2018-05-05 2020-11-20 吴彬 Working method of vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109249921A (en) * 2017-07-12 2019-01-22 罗伯特·博世有限公司 For being executed the control device and method of parking function by means of the hydraulic braking system of vehicle
CN111959473A (en) * 2018-05-05 2020-11-20 吴彬 Working method of vehicle
CN111959474A (en) * 2018-05-05 2020-11-20 吴彬 Parking brake device for vehicle and operating method thereof

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110112

Termination date: 20150524

EXPY Termination of patent right or utility model