CN108501917B - Auxiliary brake system - Google Patents
Auxiliary brake system Download PDFInfo
- Publication number
- CN108501917B CN108501917B CN201810305362.XA CN201810305362A CN108501917B CN 108501917 B CN108501917 B CN 108501917B CN 201810305362 A CN201810305362 A CN 201810305362A CN 108501917 B CN108501917 B CN 108501917B
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- oil
- brake
- return valve
- booster pump
- valve
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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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/12—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 fluid assistance, drive, or release the fluid being liquid
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses an auxiliary braking system which comprises a brake disc, a brake caliper, a pilot type overflow valve connected with the brake caliper and a booster pump used for conveying lubricating oil to the pilot type overflow valve. The auxiliary braking system can improve the braking reliability and safety, adopts lubricating oil to replace auxiliary braking fluid, has a compact structure, and saves resources and space.
Description
Technical Field
The invention belongs to the technical field of brakes, and particularly relates to an auxiliary braking system.
Background
The automobile brake system has the following functions: the running automobile is forced to decelerate or even stop according to the requirement of a driver; stably parking a driven automobile under various road conditions (including on a slope); the speed of the vehicle running on the downhill is kept stable.
At present, most of automobile manufacturers in China use front-disc rear-drum brake systems on small and medium-sized finished commercial vehicles, and part of automobile types are four-wheel disc brakes. But the common automobile brake system cannot continuously brake to the maximum extent in emergency. The automobile in the market also has no brake double insurance, namely the automobile in the market has no two sets of brake devices, so that casualty accidents caused by brake failure of the automobile can be frequently reported.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. The invention provides an auxiliary brake system, aiming at improving the braking reliability and safety.
In order to achieve the purpose, the invention adopts the technical scheme that: the auxiliary braking system comprises a brake disc, a brake caliper, a pilot type overflow valve connected with the brake caliper and a booster pump used for conveying lubricating oil to the pilot type overflow valve.
The auxiliary braking system further comprises a first oil return valve connected with the brake caliper.
And after the booster pump operates, lubricating oil enters the brake caliper through the pilot overflow valve, and the brake disc is clamped by the brake caliper to perform auxiliary braking.
In the process of auxiliary braking, after the booster pump operates for a certain time, the brake controller controls the booster pump to stop operating, the pilot type overflow valve is closed, and the brake caliper clamps the brake disc.
The auxiliary braking system can improve the braking reliability and safety, adopts lubricating oil to replace auxiliary braking fluid, has a compact structure, and saves resources and space.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic structural view of an auxiliary braking system of the present invention;
FIG. 2 is a schematic view of a portion of the auxiliary braking system of the present invention;
labeled as: 1. a brake pedal; 2. a pilot operated relief valve; 3. a booster pump; 4. a gear pump; 5. an oil pan; 6. a brake caliper; 7. a brake disc; 8. a first oil return valve; 9. a second oil return valve; 10. a pressure reducing valve.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1 and 2, the present invention provides an auxiliary brake system including a brake disc 7, a brake caliper 6, a pilot operated relief valve 2 connected to the brake caliper 6, and a booster pump 3 for delivering lubricating oil to the pilot operated relief valve 2.
Specifically, as shown in fig. 1 and 2, the booster pump 3 is connected to the pilot-operated overflow valve 2 through an oil pipe, an oil inlet of the oil pipe is connected to an oil outlet of the booster pump 3, and an oil outlet of the oil pipe is connected to an oil inlet of the pilot-operated overflow valve 2. An oil outlet of the pilot-operated overflow valve 2 is connected with the brake caliper 6 through an oil pipe, lubricating oil flows into the brake caliper 6 through the pilot-operated overflow valve 2, and the lubricating oil entering the brake caliper 6 pushes a piston in the brake caliper 6 to move, so that a brake block in the brake caliper 6 clamps the brake disc 7, and braking is achieved. The structure of the pilot operated relief valve 2 is as known to those skilled in the art and will not be described in detail herein.
As shown in fig. 1 and 2, the auxiliary brake system of the present invention further includes a first oil return valve 8 connected to the caliper 6. The first oil return valve 8 is an electromagnetic valve, the first oil return valve 8 is electrically connected with the brake controller, the first oil return valve 8 is controlled by the brake controller, and the brake controller controls the first oil return valve 8 to be opened and closed. The lubricating oil is taken from the lubricating oil held in the oil pan 5 of the engine, and the gear pump 4 on the engine operates to pump the lubricating oil held in the oil pan 5 into the booster pump 3, and then the lubricating oil is pumped into the pilot operated overflow valve 2 by the booster pump 3. An oil inlet of the first oil return valve 8 is connected with the brake caliper 6 through an oil pipe, an oil outlet of the first oil return valve 8 is connected with an oil pan 5 of the engine through an oil pipe, and lubricating oil in the brake caliper 6 can flow into the oil pan 5 of the engine through the first oil return valve 8 to realize oil return.
As shown in fig. 1 and 2, the auxiliary braking system of the present invention further includes a second oil return valve 9, the second oil return valve 9 is disposed between the gear pump 4 and the booster pump 3, an oil inlet of the second oil return valve 9 is connected to the gear pump 4 through an oil pipe, an oil outlet of the second oil return valve 9 is connected to an oil inlet of the pilot-operated overflow valve 2 through an oil pipe, and another oil outlet of the second oil return valve 9 is connected to an oil pan 5 of the engine through an oil pipe. The second oil return valve 9 is a two-position three-way electromagnetic valve, the second oil return valve 9 is electrically connected with the brake controller, the second oil return valve 9 is controlled by the brake controller, and the brake controller controls the second oil return valve 9 to be opened and closed. The booster pump 3 can be driven by a motor to operate, the booster pump 3 is connected with the motor, the motor is electrically connected with a brake controller, and the brake controller controls the operation of the booster pump 3.
When the automobile runs and the driver steps on the brake pedal to the bottom when the automobile is too fast, namely the braking force of the automobile brake system is insufficient, the brake pedal displacement sensor detects and transmits a signal to the brake controller, the brake controller sends out a command, the booster pump 3 operates, and the auxiliary brake system starts to work.
The working principle of the auxiliary braking system of the invention is as follows: the auxiliary braking system starts to work, the gear pump 4 operates, after the booster pump 3 operates, lubricating oil enters the brake caliper 6 through the pilot type overflow valve 2, and the brake disc 7 is clamped by the brake caliper 6 for auxiliary braking. That is, the gear pump 4 pumps a part of the lubricating oil in the oil pan 5 into the engine through the pressure reducing valve 10 to lubricate the engine, and the other part of the oil flows into the brake caliper 6 through the booster pump 3 and the pilot operated relief valve 2, and at this time, the first oil return valve 8 and the second oil return valve 9 are closed, so that the oil pressure in the brake caliper 6 rises, and the brake caliper 6 clamps the brake disc 7 to realize auxiliary braking, so as to decelerate the automobile.
In the process of auxiliary braking, after the booster pump 3 operates for a certain time, the brake controller controls the booster pump 3 to stop operating, the pilot type overflow valve 2 is closed, and the brake caliper 6 clamps the brake disc 7.
When the speed of the automobile is not reduced to a specified value or before the automobile is not stopped, the auxiliary braking system needs to continuously work, but in order to prevent the automobile from locking, the pressure in the brake caliper 6 can not continuously rise, after the booster pump 3 is opened for a certain time, the braking controller sends a command to control the booster pump 3 to be closed, the oil pressure of a pilot valve port of the pilot type overflow valve 2 can not reach the working pressure, the pilot type overflow valve 2 is in a closed state, the oil circuit is interrupted at the pilot type overflow valve 2, meanwhile, the braking controller controls the second oil return valve 9 to be opened, lubricating oil flowing to the pilot type overflow valve 2 flows back to the oil pan 5 through the second oil return valve 9, the first oil return valve 8 is in a closed state, the pressure in the brake caliper 6 is kept unchanged, and the continuous braking of.
When the speed of the automobile is reduced to a specified value or the automobile stops, namely after the displacement sensor of the brake pedal detects that the brake pedal returns to the original position, the displacement sensor transmits a signal to the brake controller, the brake controller sends a command to open the first oil return valve 8, the brake caliper 6 starts unloading, lubricating oil in the brake caliper 6 flows back to the oil pan 5 through the first oil return valve 8, the oil pressure in the brake caliper 6 is reduced, the auxiliary brake system stops working and returns to the original state, and the auxiliary brake is finished.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (1)
1. Auxiliary brake system, including brake disc and brake pincers, its characterized in that: the brake system further comprises a pilot type overflow valve connected with the brake caliper, a booster pump used for conveying lubricating oil to the pilot type overflow valve, a first oil return valve and a second oil return valve connected with the brake caliper;
the pilot-operated overflow valve is connected with the brake controller, after the booster pump operates, lubricating oil enters the brake caliper through the pilot-operated overflow valve, and the brake disc is clamped by the brake caliper for auxiliary braking;
in the process of auxiliary braking, after the booster pump operates for a certain time, the brake controller controls the booster pump to stop operating, the pilot-operated overflow valve is closed, and the brake caliper clamps the brake disc;
the first oil return valve is an electromagnetic valve and is electrically connected with the brake controller, lubricating oil is taken from lubricating oil contained in an oil pan of the engine, a gear pump on the engine operates to pump the lubricating oil contained in the oil pan into a booster pump, and then the booster pump pumps the lubricating oil into the pilot-operated overflow valve; an oil inlet of the first oil return valve is connected with the brake caliper through an oil pipe, an oil outlet of the first oil return valve is connected with an oil pan of the engine through the oil pipe, and lubricating oil in the brake caliper can flow into the oil pan of the engine through the first oil return valve to realize oil return;
the second oil return valve is arranged between the gear pump and the booster pump, an oil inlet of the second oil return valve is connected with the gear pump through an oil pipe, one oil outlet of the second oil return valve is connected with an oil inlet of the pilot-operated overflow valve through an oil pipe, and the other oil outlet of the second oil return valve is connected with an oil pan of the engine through an oil pipe; the second oil return valve is a two-position three-way electromagnetic valve and is electrically connected with the brake controller, the second oil return valve is controlled by the brake controller, and the brake controller controls the second oil return valve to be opened and closed;
the booster pump is driven by a motor to operate, the booster pump is connected with the motor, the motor is electrically connected with a brake controller, and the brake controller controls the operation of the booster pump;
when the automobile runs at an excessively high speed and a driver steps on a brake pedal to the bottom, namely when the braking force of an automobile braking system is insufficient, a brake pedal displacement sensor detects and transmits a signal to a brake controller, the brake controller sends out a command, a booster pump operates, and the auxiliary braking system starts to work;
the auxiliary braking system starts to work, the gear pump operates, after the booster pump operates, lubricating oil enters the brake caliper through the pilot type overflow valve, and the brake disc is clamped by the brake caliper for auxiliary braking; the gear pump pumps a part of lubricating oil in the oil pan into an engine through a pressure reducing valve to lubricate the engine, the other part of the oil flows into a brake caliper through a booster pump and a pilot type overflow valve, at the moment, a first oil return valve and a second oil return valve are closed, the oil pressure in the brake caliper is increased, and the brake caliper clamps a brake disc to realize auxiliary braking and decelerate the automobile;
in the process of auxiliary braking, after the booster pump operates for a certain time, the brake controller controls the booster pump to stop operating, the pilot type overflow valve is closed, and the brake caliper clamps the brake disc;
when the speed of the automobile is not reduced to a specified value or the automobile is not stopped, the auxiliary braking system needs to continuously work, but in order to prevent the automobile from being locked, the pressure in the brake caliper can not continuously rise, after the booster pump is started for a certain time, the braking controller sends a command to control the booster pump to be closed, the oil pressure of a pilot valve port of the pilot type overflow valve can not reach the working pressure of the pilot type overflow valve, the pilot type overflow valve is in a closed state, an oil path is interrupted at the pilot type overflow valve, meanwhile, the braking controller controls a second oil return valve to be opened, lubricating oil flowing to the pilot type overflow valve flows back to an oil pan through the second oil return valve, the first oil return valve is in a closed state, the pressure in the brake caliper is kept;
when the speed of the automobile is reduced to a specified value or the automobile stops, namely the displacement sensor of the brake pedal detects that the brake pedal is restored to the original position, the displacement sensor transmits a signal to the brake controller, the brake controller sends a command to open the first oil return valve, the brake caliper starts unloading, lubricating oil in the brake caliper flows back to the oil pan through the first oil return valve, the oil pressure in the brake caliper is reduced, the auxiliary brake system stops working and restores to the original state, and the auxiliary brake is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305362.XA CN108501917B (en) | 2018-04-08 | 2018-04-08 | Auxiliary brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810305362.XA CN108501917B (en) | 2018-04-08 | 2018-04-08 | Auxiliary brake system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108501917A CN108501917A (en) | 2018-09-07 |
| CN108501917B true CN108501917B (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810305362.XA Active CN108501917B (en) | 2018-04-08 | 2018-04-08 | Auxiliary brake system |
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| Country | Link |
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| CN (1) | CN108501917B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656391Y (en) * | 2003-10-10 | 2004-11-17 | 淄博矿业集团有限责任公司许厂煤矿 | Hydraulic brake device for hoister |
| CN201245414Y (en) * | 2008-08-07 | 2009-05-27 | 中国石油天然气股份有限公司 | Hydraulic control disc type brake device |
| CN101804806A (en) * | 2009-02-18 | 2010-08-18 | 力帆实业(集团)股份有限公司 | Rear brake assembly of motorcycle |
| CN102004039B (en) * | 2010-10-25 | 2012-08-29 | 江苏大学 | Test jack horse and test method of electric vehicle electromagnetic and frictional brake integrated system |
| US9574324B2 (en) * | 2011-05-18 | 2017-02-21 | Hitachi Construction Machinery Co., Ltd. | Work machine |
| DE102011080908A1 (en) * | 2011-08-12 | 2013-02-14 | Aktiebolaget Skf | Flow control valve and flow process |
| CN204283876U (en) * | 2014-11-27 | 2015-04-22 | 中国石油天然气股份有限公司 | Adjustable hydraulic intermittent brake device of oil extraction screw pump |
| CN204978621U (en) * | 2015-09-29 | 2016-01-20 | 陈书文 | Emergent slowly fast arresting gear of car hydraulic pressure disk |
| CN204956456U (en) * | 2015-09-29 | 2016-01-13 | 陈书文 | Emergent slowly fast arresting gear of car pneumatic cylinder formula |
| CN106143456A (en) * | 2016-08-30 | 2016-11-23 | 安徽合力股份有限公司 | The brakes of large-tonnage storage battery forktruck |
| CN107344548A (en) * | 2017-07-31 | 2017-11-14 | 安徽合力股份有限公司 | A kind of Electro-hydraulic brake system for electri forklift Brake energy recovery |
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- 2018-04-08 CN CN201810305362.XA patent/CN108501917B/en active Active
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| CN108501917A (en) | 2018-09-07 |
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Effective date of registration: 20221024 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 241000 No. 8 Beijing Middle Road, Jiujiang District, Wuhu City, Anhui Province Patentee before: ANHUI POLYTECHNIC University |