CN204736839U - Underground scraper brakies hydraulic system - Google Patents
Underground scraper brakies hydraulic system Download PDFInfo
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- CN204736839U CN204736839U CN201520303865.5U CN201520303865U CN204736839U CN 204736839 U CN204736839 U CN 204736839U CN 201520303865 U CN201520303865 U CN 201520303865U CN 204736839 U CN204736839 U CN 204736839U
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Abstract
The utility model discloses an underground scraper brakies hydraulic system, including oil tank, constant delivery pump, braking valves, unfamiliar energy storage ware, piston energy storage ware, pedal brake valve, front axle stopper and rear axle stopper, the braking valves includes high -pressure overflow valve, pressure -gradient control valve, front axle brake valve and rear axle brake valve, constant delivery pump after being connected with the oil tank is connected with high -pressure overflow valve and pressure -gradient control valve respectively, the pressure -gradient control valve is connected with pedal brake valve and piston energy storage ware respectively after looping through first check valve and orifice, still is connected with unfamiliar energy storage ware and front axle stopper and rear axle stopper respectively, the pedal brake valve is connected with front axle brake valve and rear axle brake valve respectively, be equipped with the electromagnetic switch valve between piston energy storage ware and the oil tank, still be equipped with the consecutive prefill valve that makes up of pilot operated directional control valve and low pressure overflow valve. Beneficial effect: compact structure, easy dismounting, lower, the safe and reliable of cost, general interchangeability is good, the equipment form nimble, and the tube coupling is simple, the spatial layout of being convenient for.
Description
Technical field
The utility model relates to a kind of hydraulic braking system, particularly relates to a kind of underground carry scraper hydraulic braking system.
Background technology
At present, underground carry scraper hydraulic braking system adopts hydraulic pressure to realize the form of service brake to oil brake, substantially all adopt double loop brake pedal valve to coordinate prefill valve and energy storage to implement service brake, configure separately parking brake and the control loop of mechanical action in addition again; This mode is more complicated due to pipeline system, is not suitable for the underground carry scraper of space structure compact in design.
In addition, adopt the underground carry scraper hydraulic braking system of brake application by spring hydraulic release type, its prefill valve element used is special service valve substantially, can not be integrated with other control elements of brake system, so element is more scattered, cause external pipeline more, be not easy to space and arrange.
Along with development and the maturation of intelligent control technology, and manually-operated traffic safety and riding comfort is considered, underground carry scraper is just progressively to driverless operation future development, and the hydraulic braking system Based Intelligent Control condition of underground carry scraper in currently available technology is poor, and low speed driving can't be well suited for and the underground carry scraper practical work environment of space structure compact in design.
Utility model content
Main purpose of the present utility model is, overcomes deficiency of the prior art, provides a kind of underground carry scraper hydraulic braking system of new structure, is specially adapted to low speed driving and the underground carry scraper practical work environment of space structure compact in design.
Technical problem to be solved in the utility model is to provide easy, safe and reliable, the practical underground carry scraper hydraulic braking system of compact conformation, easy accessibility, making, not only have manual operation and intelligent control mode concurrently, general interchangeability is good, assembling flexible form, can realize the various control functional requirements such as topping up, cooling and Based Intelligent Control; And pipeline connects simple, reduces productive costs, facilitates space layout; Has the value in industry.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of underground carry scraper hydraulic braking system, comprises fuel tank, fix-displacement pump, brake activation valve group, diaphragm accumulator, piston power accumulator, pedal brake valve, propons drg and rear axle brake vi; Described brake activation valve group adopts inserted valve and cover plate valve, and inserted valve comprises high-pressure overflow valve, electromagnetic switch valve, pressure-gradient control valve, the first check valve, cutoff port, pilot operated directional control valve, low pressure relief valve, and cover plate valve comprises propons brake activation valve and rear axle brake valve.
Wherein, the oil suction of described fix-displacement pump is connected with fuel tank, and the oil outlet of fix-displacement pump is connected with the oil inlet of high-pressure overflow valve and the oil inlet of pressure-gradient control valve respectively; The preferential oil outlet of described pressure-gradient control valve is connected with the oil inlet of pedal brake valve and piston power accumulator with after cutoff port, respectively by the first check valve successively, and another oil outlet of pressure-gradient control valve is connected with the cooling oil inlet of diaphragm accumulator and propons drg and rear axle brake vi respectively.
And, the oil outlet of described pedal brake valve is connected with the oil inlet of propons brake activation valve and the oil inlet of rear axle brake valve respectively, the oil outlet of described propons brake activation valve is connected with the pressure oil port of propons drg, and the oil outlet of described rear axle brake valve is connected with the pressure oil port of rear axle brake vi; The oil outlet of described high-pressure overflow valve, the return opening of pedal brake valve, the return opening of propons brake activation valve, the return opening of rear axle brake valve are all connected with fuel tank, and the cooling oil outlet of described propons drg is connected with fuel tank by the second check valve after converging with the cooling oil outlet of rear axle brake vi.
Meanwhile, between described piston power accumulator and fuel tank, be provided with electromagnetic switch valve, be also provided with pilot operated directional control valve and low pressure relief valve and be connected successively the prefill valve be combined into.
The utility model is set to further: also comprise trailer brake off unit, carries out trailer walking for freeing vehicle braking.
The utility model is set to further: described trailer brake off unit comprises oil pump, the electrical motor be connected with oil pump, by pass valve, trailer check valve and pressure switch; The oil suction of described oil pump is connected with fuel tank, and the oil outlet of oil pump is connected with the oil inlet of by pass valve and the oil inlet of trailer check valve respectively; The oil outlet of described trailer check valve is connected with pressure switch and piston power accumulator respectively; Be connected with fuel tank after the oil outlet of described by pass valve and the return opening of rear axle brake valve converge.
The utility model is set to further: be provided with the 3rd check valve between the oil outlet of described propons brake activation valve and its oil inlet, is provided with the 4th check valve between the oil outlet of described rear axle brake valve and its oil inlet.
The utility model is set to further: the hydraulic fluid port place of communicating of described piston power accumulator is provided with the first pressure sensor, the oil outlet place of communicating of described propons brake activation valve is provided with the second pressure sensor, and the oil outlet place of communicating of described rear axle brake valve is provided with the 3rd pressure sensor.
The utility model is set to further: the oil outlet of described fix-displacement pump is connected with the oil inlet of high-pressure overflow valve and the oil inlet of pressure-gradient control valve respectively by in-line filter.
The utility model is set to further: the cooling oil outlet of described propons drg is connected with fuel tank by return filter after converging with the cooling oil outlet of rear axle brake vi.
The utility model is set to further: described propons brake activation valve and rear axle brake valve are electromagnetic proportional valve.
The utility model is set to further: described piston power accumulator can adopt Accumulator.
The utility model is set to further: described inserted valve adopts screw-in cartridge valve.
Compared with prior art, the beneficial effect that the utility model has is:
1, pass through fuel tank, fix-displacement pump, brake activation valve group, diaphragm accumulator, piston power accumulator, pedal brake valve, the setting of propons drg and rear axle brake vi, and brake activation valve group adopts inserted valve and cover plate valve to comprise high-pressure overflow valve, electromagnetic switch valve, pressure-gradient control valve, first check valve, cutoff port, pilot operated directional control valve, low pressure relief valve, the parts such as propons brake activation valve and rear axle brake valve are formed, not only compact conformation, easy accessibility, safe and reliable, and general interchangeability is good, assembling flexible form, topping up can be realized, cooling, and the various control functional requirement such as Based Intelligent Control, pipeline connects simple simultaneously, is convenient to space layout, is specially adapted to low speed driving and the underground carry scraper practical work environment of space structure compact in design.
Being equipped with 2, by pressure-gradient control valve and cutoff port, can guarantee that topping up flow trim is constant.
3, be equipped with trailer brake off unit, when underground carry scraper et out of order runs out of steam, brake off can be realized and carry out trailer walking, and brake off is easy to operate, releasing puts in place.
4, propons brake activation valve and rear axle brake valve all adopt electromagnetic proportional valve, and brake system when can realize driverless operation or remote control controls, thus meets Based Intelligent Control demand for development.
Foregoing is only the general introduction of technical solutions of the utility model, and in order to clearer understanding technological means of the present utility model, below in conjunction with accompanying drawing, the utility model will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of underground carry scraper hydraulic braking system of the utility model.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is further described.
A kind of underground carry scraper hydraulic braking system as shown in Figure 1, comprise fuel tank 1, fix-displacement pump 2, in-line filter 3, high-pressure overflow valve 4, electromagnetic switch valve 5, pressure-gradient control valve 6, first check valve 7, cutoff port 8, pilot operated directional control valve 9, low pressure relief valve 10, diaphragm accumulator 11, pedal brake valve 12, propons drg 13, first pressure sensor 14, second check valve 15, rear axle brake vi 16, propons brake activation valve 17, 3rd check valve 18, rear axle brake valve 19, 4th check valve 20, second pressure sensor 21, 3rd pressure sensor 22, piston power accumulator 23, return filter 24 and trailer brake off unit 25.Described high-pressure overflow valve 4, electromagnetic switch valve 5, pressure-gradient control valve 6, first check valve 7, cutoff port 8, pilot operated directional control valve 9, low pressure relief valve 10, propons brake activation valve 17 and rear axle brake valve 19 form brake activation valve group, adopt inserted valve and cover plate valve integrated morphology.
Wherein, the oil suction of fix-displacement pump 2 is connected with fuel tank 1; The oil outlet of fix-displacement pump 2 is connected with the oil inlet of in-line filter 3; The oil outlet of in-line filter 3 is connected with the oil inlet of high-pressure overflow valve 4 and the oil inlet of pressure-gradient control valve 6 respectively; The oil outlet of high-pressure overflow valve 4 is connected with fuel tank 1; The preferential oil outlet of pressure-gradient control valve 6, by after the first check valve 7 and cutoff port 8, is connected with the oil inlet of pedal brake valve 12 and piston power accumulator 23 respectively; Another oil outlet of pressure-gradient control valve 6 respectively with diaphragm accumulator 11, and propons drg 13 is connected with the cooling oil inlet of rear axle brake vi 16; The return opening of brake activation valve 12 is connected with fuel tank 1; The oil outlet of brake activation valve 12 connects the oil inlet of propons brake activation valve 17 and the oil inlet of rear axle brake valve 19 respectively; The return opening of propons brake activation valve 17 is connected with fuel tank 1 respectively with the return opening of rear axle brake valve 19; The oil outlet of propons brake activation valve 17 is connected with the pressure oil port of propons drg 13; The oil outlet of rear axle brake valve 19 is connected with the pressure oil port of rear axle brake vi 16; The cooling oil outlet of propons drg 13 is connected with fuel tank 1 by return filter 24 after converging with the cooling oil outlet of rear axle brake vi 16.
Be provided with electromagnetic switch valve 5 between described piston power accumulator 23 and fuel tank 1, be also provided with the prefill valve that pilot operated directional control valve 9 and low pressure relief valve 10 are combined into; The cooling oil inlet of described propons drg 13 and be provided with the second check valve 15 between the cooling oil inlet convergence of rear axle brake vi 16 and fuel tank 1.Described piston power accumulator 23 also can use Accumulator.
The 3rd check valve 18 is provided with between the oil outlet of described propons brake activation valve 17 and the oil inlet of himself; The 4th check valve 20 is provided with between the oil outlet of rear axle brake valve 19 and the oil inlet of himself.
The described piston power accumulator 23 hydraulic fluid port place of communicating is provided with the first pressure sensor 14; The propons brake activation valve 17 oil outlet place of communicating is provided with the second pressure sensor 21; The rear axle brake valve 19 oil outlet place of communicating is provided with the 3rd pressure sensor 22; The pressure of the first pressure sensor 14 Real-Time Monitoring piston power accumulator 23, the pressure of the second pressure sensor 21 Real-Time Monitoring propons drg 13; The pressure of the 3rd pressure sensor 22 Real-Time Monitoring rear axle brake vi 16.
Described propons brake activation valve 17 and rear axle brake valve 19 are preferably electromagnetic proportional valve, and brake system when can realize driverless operation or remote control controls, thus meets Based Intelligent Control demand for development.
The oil of fuel tank 1 becomes pressure oil by fix-displacement pump 2, after filter 3 filters by the road, enter integrated brake activation valve group, pressure oil is preferentially assigned in piston power accumulator 23 by the first check valve 7 and cutoff port 8 by the pressure-gradient control valve 6 in brake activation valve group, cutoff port 8 coordinates with pressure-gradient control valve 6, ensure that the flow being filled with piston power accumulator 23 is steady state value, avoid causing impact.Electromagnetic switch valve 5 controls the pressure vent of shutting down primary piston energy storage 23.The prefill valve that pilot operated directional control valve 9 and low pressure relief valve 10 are combined into ensures that the pressurising of piston power accumulator 23 is interval, the pressure of piston power accumulator 23 is only had to prescribe a time limit just to its topping up lower than under supercharging pressure, after reaching the supercharging pressure upper limit, pilot operated directional control valve 9 commutates, piston power accumulator 23 stops topping up, pressure-gradient control valve 6 also commutates simultaneously, and the fluid of pump 2 is all assigned to the cooling hydraulic fluid port of propons drg 13 and rear axle brake vi 16 self-quantitatively in the future.Diaphragm accumulator 11 can absorb the compression shock of cooling oil path, and the oil coolant pressure that simultaneously the second check valve 15 ensures to enter propons drg 13 and rear axle brake vi 16 is no more than the permissible value of drg.
Propons brake activation valve 17 in brake activation valve group and rear axle brake valve 19 control the propons brake release after complete machine startup and back axle brake release respectively; The 4th check valve 20 being located at the 3rd check valve 18 between the oil outlet of propons brake activation valve 17 and oil inlet and being located between the oil outlet of rear axle brake valve 19 and oil inlet, when can ensure propons brake activation valve 17 or rear axle brake valve 19 fault, the pressure oil of propons drg 13 or rear axle brake vi 16 discharges by the 3rd check valve 18 or the 4th check valve 20, ensures car brakeing safety.
Run out of steam at vehicle trouble, when needing to be dragged away maintenance, use trailer brake off unit 25, can brake by freeing vehicle, realize trailer walking.When vehicle is normally walked, trailer brake off unit 25 does not work.Described trailer brake off unit 25 comprises oil pump, the electrical motor be connected with oil pump, by pass valve, trailer check valve and pressure switch; The oil suction of described oil pump is connected with fuel tank 1, and the oil outlet of oil pump is connected with the oil inlet of by pass valve and the oil inlet of trailer check valve respectively; The oil outlet of described trailer check valve is connected with pressure switch and piston power accumulator 23 respectively; Oil outlet and the return opening of rear axle brake valve 19 of described by pass valve converge and are connected with fuel tank 1 afterwards.
Innovative point of the present utility model is, general interchangeability is good, assembling flexible form, topping up are steadily effective, can realize the various control functional requirements such as topping up, cooling and Based Intelligent Control; Pipeline connects simple simultaneously, is convenient to space layout, is specially adapted to low speed driving and the underground carry scraper practical work environment of space structure compact in design.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a underground carry scraper hydraulic braking system, is characterized in that: comprise fuel tank, fix-displacement pump, brake activation valve group, diaphragm accumulator, piston power accumulator, pedal brake valve, propons drg and rear axle brake vi; Described brake activation valve group adopts inserted valve and cover plate valve, and inserted valve comprises high-pressure overflow valve, electromagnetic switch valve, pressure-gradient control valve, the first check valve, cutoff port, pilot operated directional control valve and low pressure relief valve, and cover plate valve comprises propons brake activation valve and rear axle brake valve;
The oil suction of described fix-displacement pump is connected with fuel tank, and the oil outlet of fix-displacement pump is connected with the oil inlet of high-pressure overflow valve and the oil inlet of pressure-gradient control valve respectively;
The preferential oil outlet of described pressure-gradient control valve is connected with the oil inlet of pedal brake valve and piston power accumulator with after cutoff port, respectively by the first check valve successively, and another oil outlet of pressure-gradient control valve is connected with the cooling oil inlet of diaphragm accumulator and propons drg and rear axle brake vi respectively;
The oil outlet of described pedal brake valve is connected with the oil inlet of propons brake activation valve and the oil inlet of rear axle brake valve respectively, the oil outlet of described propons brake activation valve is connected with the pressure oil port of propons drg, and the oil outlet of described rear axle brake valve is connected with the pressure oil port of rear axle brake vi;
The oil outlet of described high-pressure overflow valve, the return opening of pedal brake valve, the return opening of propons brake activation valve, the return opening of rear axle brake valve are all connected with fuel tank, and the cooling oil outlet of described propons drg is connected with fuel tank by the second check valve after converging with the cooling oil outlet of rear axle brake vi;
Be provided with electromagnetic switch valve between described piston power accumulator and fuel tank, be also provided with pilot operated directional control valve and low pressure relief valve and be connected successively the prefill valve be combined into.
2. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: also comprise trailer brake off unit, carries out trailer walking for freeing vehicle braking.
3. a kind of underground carry scraper hydraulic braking system according to claim 2, is characterized in that: described trailer brake off unit comprises oil pump, the electrical motor be connected with oil pump, by pass valve, trailer check valve and pressure switch;
The oil suction of described oil pump is connected with fuel tank, and the oil outlet of oil pump is connected with the oil inlet of by pass valve and the oil inlet of trailer check valve respectively; The oil outlet of described trailer check valve is connected with pressure switch and piston power accumulator respectively; Be connected with fuel tank after the oil outlet of described by pass valve and the return opening of rear axle brake valve converge.
4. a kind of underground carry scraper hydraulic braking system according to claim 1, it is characterized in that: between the oil outlet of described propons brake activation valve and its oil inlet, be provided with the 3rd check valve, between the oil outlet of described rear axle brake valve and its oil inlet, be provided with the 4th check valve.
5. a kind of underground carry scraper hydraulic braking system according to claim 1, it is characterized in that: the hydraulic fluid port place of communicating of described piston power accumulator is provided with the first pressure sensor, the oil outlet place of communicating of described propons brake activation valve is provided with the second pressure sensor, and the oil outlet place of communicating of described rear axle brake valve is provided with the 3rd pressure sensor.
6. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: the oil outlet of described fix-displacement pump is connected with the oil inlet of high-pressure overflow valve and the oil inlet of pressure-gradient control valve respectively by in-line filter.
7. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: the cooling oil outlet of described propons drg is connected with fuel tank by return filter after converging with the cooling oil outlet of rear axle brake vi.
8. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: described propons brake activation valve and rear axle brake valve are electromagnetic proportional valve.
9. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: described piston power accumulator can adopt Accumulator.
10. a kind of underground carry scraper hydraulic braking system according to claim 1, is characterized in that: described inserted valve adopts screw-in cartridge valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520303865.5U CN204736839U (en) | 2015-05-12 | 2015-05-12 | Underground scraper brakies hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520303865.5U CN204736839U (en) | 2015-05-12 | 2015-05-12 | Underground scraper brakies hydraulic system |
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| CN204736839U true CN204736839U (en) | 2015-11-04 |
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| CN201520303865.5U Active CN204736839U (en) | 2015-05-12 | 2015-05-12 | Underground scraper brakies hydraulic system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184178A (en) * | 2016-08-26 | 2016-12-07 | 林德（中国）叉车有限公司 | Hydraulic pressure automatic parking system |
| CN107371621A (en) * | 2016-05-14 | 2017-11-24 | 勇猛机械股份有限公司 | A kind of cropper hydrostatic drives |
| CN108891398A (en) * | 2018-06-14 | 2018-11-27 | 杭叉集团股份有限公司 | Hydraulic valve block for brake system of forklift |
| CN110588617A (en) * | 2019-09-02 | 2019-12-20 | 中国煤炭科工集团太原研究院有限公司 | Control system for realizing driving and emergency parking braking functions of front wheels and rear wheels of explosion-proof vehicle |
| CN111731248A (en) * | 2020-06-30 | 2020-10-02 | 徐工集团工程机械股份有限公司科技分公司 | Electric control hydraulic power-assisted braking system and engineering machinery thereof |
| CN111828424A (en) * | 2020-08-03 | 2020-10-27 | 徐州徐工随车起重机有限公司 | Accumulator liquid-filling integrated valve |
| CN112173088A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Combined pressure accumulator with flow rate control function and hydraulic brake system |
| US11738732B2 (en) | 2021-04-28 | 2023-08-29 | Caterpillar Inc. | Automatic retarding control system |
-
2015
- 2015-05-12 CN CN201520303865.5U patent/CN204736839U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107371621A (en) * | 2016-05-14 | 2017-11-24 | 勇猛机械股份有限公司 | A kind of cropper hydrostatic drives |
| CN106184178A (en) * | 2016-08-26 | 2016-12-07 | 林德（中国）叉车有限公司 | Hydraulic pressure automatic parking system |
| CN108891398A (en) * | 2018-06-14 | 2018-11-27 | 杭叉集团股份有限公司 | Hydraulic valve block for brake system of forklift |
| CN110588617A (en) * | 2019-09-02 | 2019-12-20 | 中国煤炭科工集团太原研究院有限公司 | Control system for realizing driving and emergency parking braking functions of front wheels and rear wheels of explosion-proof vehicle |
| CN110588617B (en) * | 2019-09-02 | 2021-11-12 | 中国煤炭科工集团太原研究院有限公司 | Control system for realizing driving and emergency parking braking functions of front wheels and rear wheels of explosion-proof vehicle |
| CN111731248A (en) * | 2020-06-30 | 2020-10-02 | 徐工集团工程机械股份有限公司科技分公司 | Electric control hydraulic power-assisted braking system and engineering machinery thereof |
| CN111731248B (en) * | 2020-06-30 | 2024-06-11 | 徐工集团工程机械股份有限公司科技分公司 | Electric control hydraulic power-assisted braking system and engineering machinery thereof |
| CN111828424A (en) * | 2020-08-03 | 2020-10-27 | 徐州徐工随车起重机有限公司 | Accumulator liquid-filling integrated valve |
| CN111828424B (en) * | 2020-08-03 | 2022-03-22 | 徐州徐工随车起重机有限公司 | Accumulator liquid-filling integrated valve |
| CN112173088A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Combined pressure accumulator with flow rate control function and hydraulic brake system |
| US11738732B2 (en) | 2021-04-28 | 2023-08-29 | Caterpillar Inc. | Automatic retarding control system |
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