CN103802809A - Brake control system of mining dump truck and mining dump truck - Google Patents
Brake control system of mining dump truck and mining dump truck Download PDFInfo
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- CN103802809A CN103802809A CN201210442268.1A CN201210442268A CN103802809A CN 103802809 A CN103802809 A CN 103802809A CN 201210442268 A CN201210442268 A CN 201210442268A CN 103802809 A CN103802809 A CN 103802809A
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Abstract
The invention discloses a brake control system of a mining dump truck and the mining dump truck. The brake control system comprises an auxiliary brake valve group, the auxiliary brake valve group comprises a valve body, a relief valve, a hydraulic operated directional valve and an accumulator, wherein an oil inlet of the relief valve is communicated with an external control pressure oil source, an oil outlet of the relief valve and the accumulator are communicated, an oil inlet of the hydraulic operated directional valve is communicated with the accumulator, an oil outlet of the hydraulic operated directional valve is communicated with a service brake chamber of a brake, a control port of the hydraulic operated directional valve and a rear brake oil pressure port of a brake pedal valve are communicated, when the hydraulic operated directional valve does not work, the oil inlet and the oil outlet of the hydraulic operated directional valve are not communicated, and when hydraulic operated directional valve works, the oil inlet and the oil outlet of the hydraulic operated directional valve are communicated. By adopting the scheme, the accumulator is used for improving the rear brake performance of the mining dump truck, the problem of higher oil temperature can be avoided and the energy consumption can be reduced.
Description
Technical field
The present invention relates to engineering truck technical field, particularly relate to a kind of braking control system and a kind of quarry tipper of quarry tipper.
Background technology
Quarry tipper is the construction machinery and equipment that is widely used in the field such as mine, large foundation construction, is mainly used in handling and the transportation of ore, sandy soil and other bulk cargos.Because the road conditions of travelling are poor, load carrying ability is large, this just requires quarry tipper to have safe and reliable brake system, but being divided in the general layout of vehicle frame rear and front end, brake pedal valve and oil-immersed multi-disk brake must cause after quarry tipper braking to be built pressing slowly, when serious very easily there is the situation of the first locking of front-wheel in vehicle at wet-skid road surface, thereby cause the generation of Peril Incident.Along with the trend that continuous expansion and the large-tonnageization thereof of quarry tipper application demand develop, the deceleration and stopping performance that improves quarry tipper is extremely urgent.
At present, utilize back pressure valve group to improve the main flow that deceleration and stopping performance is domestic quarry tipper design, its principle is: the back pressure of utilizing by pass valve to produce reduces the gap between oil-immersed multi-disk brake brake piston and friction lining, thus braking response speed after improving.But system continues overflow will inevitably cause the phenomenon that oil temperature raises, energy consumption of vehicles increases.
Summary of the invention
The object of this invention is to provide a kind of braking control system and a kind of quarry tipper of quarry tipper, in order to reduce energy consumption of vehicles in braking response speed after raising.
The braking control system of quarry tipper of the present invention, comprises ancillary brake valve group, and described ancillary brake valve group comprises valve body, by pass valve, pilot operated directional control valve and energy storage, wherein,
The oil inlet of described by pass valve is communicated with external control pressure oil-source, and the oil outlet of described by pass valve is communicated with energy storage;
The oil inlet of described pilot operated directional control valve is communicated with energy storage, and the oil outlet of described pilot operated directional control valve is communicated with the service brake chamber of drg, and the control mouth of described pilot operated directional control valve is communicated with the rear braking force feed mouth of brake pedal valve; In the time that pilot operated directional control valve is not worked, the oil inlet of described pilot operated directional control valve is not communicated with the oil outlet of described pilot operated directional control valve, and in the time that pilot operated directional control valve is worked, the oil inlet of described pilot operated directional control valve is communicated with the oil outlet of described pilot operated directional control valve.
Preferably, the rear braking force feed mouth of described brake pedal valve is communicated with the service brake chamber of drg.
Preferably, described ancillary brake valve group also comprises: the check valve that is arranged at the oil outlet of pilot operated directional control valve.
Preferably, described pilot operated directional control valve is two single-pass change-over valves.
Preferably, the setting pressure of described by pass valve is 25bar.
Preferably, the setting pressure of described pilot operated directional control valve is 5bar.
Preferably, the nominal volume of described energy storage is 0.4L, and Preliminary pressure-filled is 5bar, and maximum working pressure (MWP) is 25bar, and minimum working pressure power is 10bar.
Preferably, described ancillary brake valve group is arranged at the rear portion of chassis side rail.
Quarry tipper of the present invention, comprises the braking control system described in aforementioned arbitrary technical scheme.
In technical solution of the present invention, in the time of normal vehicle operation, utilize energy storage storage compartment pressure oil, in the time that vehicle is implemented braking, ancillary brake valve group is received the pressure signal of brake pedal valve, utilizes the service brake piston that energy storage fast speed is drg that the required pressure of pre-action and flow are provided, do not rely on overflow back pressure, therefore can improve the speed of response of rear braking, avoid oil temperature too high, greatly reduce energy consumption of vehicles.
Accompanying drawing explanation
Fig. 1 is the ancillary brake valve group structural representation of braking control system one embodiment of the present invention.
Reference numeral:
1-ancillary brake valve group 2-valve body
3-by pass valve 4-pilot operated directional control valve
The oil inlet of 5-energy storage 6-by pass valve
The oil inlet of the oil outlet 8-pilot operated directional control valve of 7-by pass valve
The control mouth of the oil outlet 10-pilot operated directional control valve of 9-pilot operated directional control valve
11-check valve
The specific embodiment
In order to reduce energy consumption of vehicles in braking response speed after raising, the embodiment of the present invention provides a kind of braking control system and a kind of quarry tipper of quarry tipper.
As shown in Figure 1, the braking control system of quarry tipper of the present invention, comprises ancillary brake valve group 1, and described ancillary brake valve group 1 comprises valve body 2, by pass valve 3, pilot operated directional control valve 4 and energy storage 5, wherein,
The oil inlet 6 of described by pass valve is communicated with (by A mouth) with external control pressure oil-source, the oil outlet 7 of described by pass valve is communicated with (by B mouth) with energy storage 5;
The oil inlet 8 of described pilot operated directional control valve is communicated with energy storage 5, the oil outlet 9 of described pilot operated directional control valve is communicated with (by D mouth) with the service brake chamber of drg, and the control mouth 10 of described pilot operated directional control valve is communicated with (by C mouth) with the rear braking force feed mouth of brake pedal valve; In the time that pilot operated directional control valve 4 is not worked, the oil inlet 8 of described pilot operated directional control valve is not communicated with the oil outlet 9 of described pilot operated directional control valve, and in the time that pilot operated directional control valve 4 is worked, the oil inlet 8 of described pilot operated directional control valve is communicated with the oil outlet 9 of described pilot operated directional control valve.
In technical solution of the present invention, in the time of normal vehicle operation, utilize energy storage 5 storage compartment pressure oils, in the time that vehicle is implemented braking, ancillary brake valve group 1 is received the pressure signal of brake pedal valve, utilize the service brake piston that energy storage 5 fast speedes are drg that the required pressure of pre-action and flow are provided, do not need to rely on overflow back pressure.The dynamic characteristics that energy storage 5 is good can effectively be improved and passes by the slow problem of rear braking response that exists gap to cause between the brake piston of long and drg and friction lining because of transferring oil.Therefore, technical solution of the present invention can, after raising in braking response speed, avoid oil temperature too high, greatly reduces energy consumption of vehicles.
In this embodiment, described drg is generally oil-immersed multi-disk brake; By pass valve 3 is decompression by pass valve, and the return opening of by pass valve 3 and pilot operated directional control valve 4 is all communicated with (by T mouth) with oil return line; In addition, ancillary brake valve group 1 is also provided with two pressure tap (M1 in figure and M2), for measuring the pressure of valve group.
Shown in Fig. 1, the rear braking force feed mouth of described brake pedal valve is communicated with the service brake chamber of drg by oil pipe, like this, also can directly arrive the service brake chamber of drg from a part of pressure oil of the rear braking force feed mouth of brake pedal valve.
As preferred embodiment, described ancillary brake valve group 1 also comprises: the check valve 11 that is arranged at the oil outlet 9 of pilot operated directional control valve.Check valve 11 can prevent pressure oil counter-flow in hydraulic efficiency pressure system, thereby meets the control needs of hydraulic efficiency pressure system.
The type of pilot operated directional control valve 4 is not limit, and technical solution of the present invention only need be controlled the connected state between the oil inlet 8 of pilot operated directional control valve and the oil outlet 9 of pilot operated directional control valve, and therefore, this embodiment has preferably adopted two single-pass change-over valves.
As preferred version, the setting pressure of described by pass valve 3 is 25bar(1bar=100,000Pa).The setting pressure of described pilot operated directional control valve 4 is 5bar.The nominal volume of described energy storage 5 is 0.4L, and Preliminary pressure-filled is 5bar, and maximum working pressure (MWP) is 25bar, and minimum working pressure power is 10bar.Utilize rigidity, deflection and the stroke of retarding spring in drg, then mate car load brake parameters and can obtain the each parameter value of energy storage.These are preferred parameter value, but the claimed technical scheme of the present invention is never confined to this, and by pass valve 3, pilot operated directional control valve 4 and energy storage 5 also can adopt other model parameter, and this specifically need to select according to the designing requirement of hydraulic efficiency pressure system.
Ancillary brake valve group 1 is preferably disposed on the rear portion of chassis side rail, like this, nearer apart from drg, can make dumping car obtain better braking response.
Shown in Fig. 1, the specific works process of this braking control system is:
In the time of normal vehicle operation, external control pressure oil arrives energy storage 5 through A mouth, by pass valve 3 and B mouth, and the setting pressure of by pass valve 3 is 25bar.Chaufeur is stepped on after brake pedal valve, and the rear braking that connects brake pedal valve presses the pressure of oil port to rise to 5bar, and pilot operated directional control valve 4 commutates, and the pressure oil in energy storage 5 arrives the service brake chamber of drg through pilot operated directional control valve 4, check valve 11 and D mouth.When after chaufeur loosen the brake, pilot operated directional control valve 4 commutates, and has cut off energy storage 5 to the oil circuit in service brake chamber, and the pressure oil in service brake chamber flows back to fuel tank through brake pedal valve.
Visible by above process, utilize energy storage to improve the rear deceleration and stopping performance of quarry tipper, can avoid the problem that oil temperature is higher and energy consumption is larger causing because of overflow back pressure.Not only reliable in function, simple in structure of this ancillary brake valve group, and cost is moderate, is convenient to domestic mine car manufacturer production processing.
Quarry tipper of the present invention, comprises the braking control system described in aforementioned arbitrary embodiment, has higher rear braking response speed and lower energy consumption of vehicles.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (9)
1. a braking control system for quarry tipper, is characterized in that, comprises ancillary brake valve group (1), and described ancillary brake valve group (1) comprises valve body (2), by pass valve (3), pilot operated directional control valve (4) and energy storage (5), wherein,
The oil inlet (6) of described by pass valve is communicated with external control pressure oil-source, and the oil outlet (7) of described by pass valve is communicated with energy storage (5);
The oil inlet (8) of described pilot operated directional control valve is communicated with energy storage (5), and the oil outlet (9) of described pilot operated directional control valve is communicated with the service brake chamber of drg, and the control mouth (10) of described pilot operated directional control valve is communicated with the rear braking force feed mouth of brake pedal valve; In the time that pilot operated directional control valve (4) is not worked, the oil inlet (8) of described pilot operated directional control valve is not communicated with the oil outlet (9) of described pilot operated directional control valve, in the time that pilot operated directional control valve (4) is worked, the oil inlet (8) of described pilot operated directional control valve is communicated with the oil outlet (9) of described pilot operated directional control valve.
2. braking control system as claimed in claim 1, is characterized in that, the rear braking force feed mouth of described brake pedal valve is communicated with the service brake chamber of drg.
3. braking control system as claimed in claim 1, is characterized in that, described ancillary brake valve group (1) also comprises: the check valve (11) that is arranged at the oil outlet (9) of pilot operated directional control valve.
4. braking control system as claimed in claim 1, is characterized in that, described pilot operated directional control valve (4) is two single-pass change-over valves.
5. the braking control system as described in claim 1 ~ 4 any one, is characterized in that, the setting pressure of described by pass valve (3) is 25bar.
6. the braking control system as described in claim 1 ~ 4 any one, is characterized in that, the setting pressure of described pilot operated directional control valve (4) is 5bar.
7. the braking control system as described in claim 1 ~ 4 any one, is characterized in that, the nominal volume of described energy storage (5) is 0.4L, and Preliminary pressure-filled is 5bar, and maximum working pressure (MWP) is 25bar, and minimum working pressure power is 10bar.
8. the braking control system as described in claim 1 ~ 4 any one, is characterized in that, described ancillary brake valve group (1) is arranged at the rear portion of chassis side rail.
9. a quarry tipper, is characterized in that, comprises the braking control system as described in claim 1 ~ 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442268.1A CN103802809A (en) | 2012-11-08 | 2012-11-08 | Brake control system of mining dump truck and mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442268.1A CN103802809A (en) | 2012-11-08 | 2012-11-08 | Brake control system of mining dump truck and mining dump truck |
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| CN103802809A true CN103802809A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210442268.1A Pending CN103802809A (en) | 2012-11-08 | 2012-11-08 | Brake control system of mining dump truck and mining dump truck |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906084A (en) * | 2017-10-27 | 2018-04-13 | 中国铁建重工集团有限公司 | Rock drill and its hydraulic pressure drilling control system |
| CN109515417A (en) * | 2018-11-12 | 2019-03-26 | 三汽车起重机械有限公司 | Brake fluid system and crane |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1308360B1 (en) * | 2001-10-31 | 2006-10-18 | Sumitomo ( SEI) Brake Systems, Inc. | Hydraulic pressure control valve and vehicle brake device using the same |
| CN202098403U (en) * | 2010-09-14 | 2012-01-04 | 广东技术师范学院 | Vehicle brake energy recycling hydraulic device |
| CN102328647A (en) * | 2011-07-27 | 2012-01-25 | 三一重工股份有限公司 | Automatic loosening and braking device and road roller with same |
| CN102416940A (en) * | 2011-10-14 | 2012-04-18 | 三一重工股份有限公司 | Hydraulic control system and engineering machine |
| CN102632880A (en) * | 2011-02-09 | 2012-08-15 | 贺勍 | Efficient collection and reuse system for inertial energy during braking process of load-carrying vehicle |
| CN203237238U (en) * | 2012-11-08 | 2013-10-16 | 秦皇岛天业通联重工股份有限公司 | Brake control system of mining dump truck and mining dump truck |
-
2012
- 2012-11-08 CN CN201210442268.1A patent/CN103802809A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1308360B1 (en) * | 2001-10-31 | 2006-10-18 | Sumitomo ( SEI) Brake Systems, Inc. | Hydraulic pressure control valve and vehicle brake device using the same |
| CN202098403U (en) * | 2010-09-14 | 2012-01-04 | 广东技术师范学院 | Vehicle brake energy recycling hydraulic device |
| CN102632880A (en) * | 2011-02-09 | 2012-08-15 | 贺勍 | Efficient collection and reuse system for inertial energy during braking process of load-carrying vehicle |
| CN102328647A (en) * | 2011-07-27 | 2012-01-25 | 三一重工股份有限公司 | Automatic loosening and braking device and road roller with same |
| CN102416940A (en) * | 2011-10-14 | 2012-04-18 | 三一重工股份有限公司 | Hydraulic control system and engineering machine |
| CN203237238U (en) * | 2012-11-08 | 2013-10-16 | 秦皇岛天业通联重工股份有限公司 | Brake control system of mining dump truck and mining dump truck |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906084A (en) * | 2017-10-27 | 2018-04-13 | 中国铁建重工集团有限公司 | Rock drill and its hydraulic pressure drilling control system |
| CN109515417A (en) * | 2018-11-12 | 2019-03-26 | 三汽车起重机械有限公司 | Brake fluid system and crane |
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Application publication date: 20140521 |
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