CN219192168U - Mutually-noninterfere double-loop hydraulic braking system - Google Patents
Mutually-noninterfere double-loop hydraulic braking system Download PDFInfo
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- CN219192168U CN219192168U CN202320409537.8U CN202320409537U CN219192168U CN 219192168 U CN219192168 U CN 219192168U CN 202320409537 U CN202320409537 U CN 202320409537U CN 219192168 U CN219192168 U CN 219192168U
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- 239000007788 liquid Substances 0.000 claims abstract description 35
- 230000002452 interceptive effect Effects 0.000 claims abstract description 7
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 description 22
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of vehicle braking systems, and discloses a non-interactive double-loop hydraulic braking system which comprises a main oil tank, a hydraulic pump, a filter, a liquid filling mechanism, a flow dividing valve, two energy accumulators and two brake pedals, wherein the main oil tank is connected with the hydraulic pump; the main oil tank is connected with the hydraulic pump, the hydraulic pump is connected with the liquid filling mechanism through the filter, the flow dividing valve comprises an inlet and two outlets, the liquid filling mechanism is connected with the inlet, the two outlets are respectively connected with the energy accumulator, and the two energy accumulators are respectively connected with the brake pedal. The utility model has the effect that when one of the accumulator pipelines fails, the failure-free accumulator pipeline can keep pressure to supply oil to the brake pedal and brake, and effectively ensures that the vehicle has a service brake function all the time.
Description
Technical Field
The utility model relates to the technical field of vehicle braking systems, in particular to a double-loop hydraulic braking system which is not mutually influenced.
Background
Currently, wet brakes are required to be used for underground trackless rubber-tyred equipment in mines. For a wet brake vehicle equipped with hydraulic brake spring release, the front axle and the rear axle each require a separate accumulator(s) to provide a source of pressure energy for braking, and when the vehicle is braked, the brake pedal is depressed to force pressure oil into the brake to brake.
In the existing braking system, accumulator pipelines of a front axle and a rear axle are simultaneously connected into a liquid filling valve, when one accumulator pipeline of the front axle or the rear axle breaks and other faults occur, the corresponding accumulator is decompressed, the corresponding front axle or the rear axle brake cannot brake by supplying oil, the pipeline pressure on one side of the fault is communicated with the outside due to the communication with the fault pipeline, so that the pipeline on one side of the fault cannot normally store energy, the pipeline without the fault can only brake by the original pressure oil in the accumulator in a short time, but the brake cannot be performed when the pressure consumption of the accumulator is lower than the braking pressure.
In short, one energy accumulator pipeline fails, the other energy accumulator pipeline can keep pressure, but can not be filled with liquid again to raise the pressure, and the original pressure of the energy accumulator gradually decreases until zero along with the step of the brake pedal, so that the vehicle can lose the service braking function.
Disclosure of Invention
In order to solve the problems, the utility model provides a double-loop hydraulic braking system which is not mutually influenced.
The utility model provides a double-loop hydraulic braking system which is not affected by each other, which adopts the following technical scheme:
a non-interactive dual-circuit hydraulic braking system comprises a main oil tank, a hydraulic pump, a filter, a liquid filling mechanism, a flow dividing valve, two energy accumulators and two brake pedals;
the main oil tank is connected with the hydraulic pump, the hydraulic pump is connected with the liquid filling mechanism through the filter, the flow dividing valve comprises an inlet and two outlets, the liquid filling mechanism is connected with the inlet, the two outlets are respectively connected with the energy accumulator, and the two energy accumulators are respectively connected with the brake pedal.
Through adopting above-mentioned technical scheme, install the shunt valve between charging mechanism and energy storage ware, when one of them energy storage ware pipeline broke, the energy storage ware pressure release of this return circuit, the brake pedal that makes this return circuit is stepped on and is unable normal fuel feeding and brake, the normal energy storage ware of opposite side still can normally run because the effect of shunt valve, the shunt valve has stopped the influence of cutting the energy storage ware pipeline of breaking the side to the energy storage ware of normal side, the effectual energy storage ware pressurization function of guaranteeing intact one side can make the energy storage ware normal pressurize, liquid filling and the pressure release of the damaged trouble oil return of no pipeline, and then keep the normal braking of driving.
Preferably, the liquid filling mechanism comprises a priority valve, a built-in filter, an orifice, a one-way valve and a hydraulic reversing valve, wherein the filter is connected with the priority valve, the priority valve is connected with the one-way valve through the built-in filter and the orifice, and the one-way valve is connected with the hydraulic reversing valve.
By adopting the technical scheme, the one-way valve is arranged in the liquid filling mechanism, so that the oil in the oil tank is unidirectionally conveyed into the energy accumulator, and the direction of the oil flow in the hydraulic mechanism is controlled through the hydraulic reversing valve.
Preferably, the priority valve is connected with a second auxiliary oil tank, and the priority valve is used for adjusting the oil in the liquid charging mechanism to flow into the second auxiliary oil tank according to the reversing of the hydraulic reverser.
By adopting the technical scheme, when the pressure value in the system is too high, the hydraulic reversing valve reverses, so that the oil of the hydraulic mechanism is prevented from continuously flowing to the flow dividing valve, the pressure is prevented from continuously rising, and before reversing, the oil in the liquid filling mechanism flows to the second auxiliary oil tank through the priority valve, and backflow to the main oil tank is prevented.
Preferably, the charging mechanism further comprises a safety valve, the filter is connected with the safety valve, the safety valve is connected with the first auxiliary oil tank, and the safety valve is used for discharging oil into the first auxiliary oil tank when the pressure in the charging mechanism exceeds a specified value.
By adopting the technical scheme, the safety valve is arranged to play a role in safety protection in the braking system, and when the pressure in the liquid filling mechanism exceeds a specified value, the safety valve is opened to discharge the oil in the liquid filling mechanism into the first auxiliary oil tank, so that the pressure of the liquid filling mechanism does not exceed the specified value, and the normal operation of the liquid filling mechanism is ensured.
Preferably, the connection node of the liquid filling mechanism and the flow dividing valve is also connected with a pressure switch, and the pressure switch is used for detecting the pressure value at the position and controlling the reversing of the hydraulic reverser according to the pressure value.
Preferably, the two accumulators are each connected to a pressure gauge, which is used to observe the respective pressure values of the two accumulators.
In summary, the utility model has the following beneficial technical effects:
1. the diverter valve is arranged between the liquid charging mechanism and the energy accumulator, when one of the energy accumulator pipelines is broken, the energy accumulator of the loop is decompressed, so that the brake pedal of the loop cannot be normally supplied with oil for braking after being stepped on, the energy accumulator at the other side can still normally operate under the action of the diverter valve, the diverter valve blocks the influence of the broken energy accumulator pipeline on the energy accumulator at the normal side, the pressurizing function of the energy accumulator at the intact side is effectively ensured, and the energy accumulator without pipeline breakage fault oil return can normally maintain pressure, charge and release pressure, so that the normal braking of driving is maintained.
Drawings
Fig. 1 is a hydraulic schematic diagram of a dual circuit hydraulic brake system of the present utility model that does not affect each other.
Fig. 2 is a connection structure diagram of a hydraulic pump and a filter of a dual circuit hydraulic brake system that does not affect each other according to the present utility model.
FIG. 3 is a schematic illustration of the internal connections of the charging mechanism of the dual circuit hydraulic brake system of the present utility model.
Fig. 4 is a connection structure diagram of a diverter valve of a dual-circuit hydraulic brake system that does not affect each other according to the present utility model.
Fig. 5 is a connection structure diagram of brake pedals of a dual-circuit hydraulic brake system that does not affect each other according to the present utility model.
Reference numerals illustrate: 1. a main oil tank; 2. a hydraulic pump; 3. a filter; 4. a liquid charging mechanism; 5. a diverter valve; 6. an accumulator; 7. a brake pedal; 8. an inlet; 9. an outlet; 10. a priority valve; 11. a filter is arranged in the filter; 12. an orifice; 13. a one-way valve; 14. a hydraulic reversing valve; 15 a second auxiliary oil tank; 16. a safety valve; 17. a first auxiliary oil tank; 18. a pressure switch; 19. a pressure gauge.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
The embodiment of the utility model discloses a dual-loop hydraulic braking system which is not mutually influenced. Referring to fig. 1, the system includes a main tank 1, a hydraulic pump 2, a filter 3, a charging mechanism 4, a diverter valve 5, two accumulators 6, and two brake pedals 7.
Referring to fig. 2, a main oil tank 1 is connected with a hydraulic pump 2, the hydraulic pump 2 is connected with a filter 3, the filter 3 is connected with a liquid filling mechanism 4, a vehicle is started, an engine or a torque converter driven by the engine of the vehicle drives the hydraulic pump 2 to suck oil from the main oil tank 1, pressure oil is formed to be discharged, and the pressure oil is filtered by the filter 3 and then enters a port P of the liquid filling mechanism 4.
Referring to fig. 3, the charging mechanism 4 includes a priority valve 10, a built-in filter 11, an orifice 12, a check valve 13, a hydraulic directional valve 14, and a relief valve 16, the filter 3 is connected to the relief valve 16, the relief valve 16 is connected to a first auxiliary tank 17, and when the pressure in the charging mechanism 4 exceeds a predetermined value, the relief valve 16 is opened to discharge a part of the oil in the charging mechanism 4 into the first auxiliary tank 17, so that the pressure in the charging mechanism 4 does not exceed the predetermined value, and the normal operation of the charging mechanism 4 is ensured. Wherein, the model of the liquid filling mechanism 4 is ACV-SMO11-128-159-10.
The filter 3 is also connected with the priority valve 10, the priority valve 10 is connected with the one-way valve 13 through the built-in filter 11 and the throttle hole 12, when oil flows in a pipeline, the throttle hole 12 can reduce the pressure of fluid by utilizing the local resistance of the throttle hole 12, reduce energy consumption and effectively achieve the throttling effect, the priority valve 10 and the one-way valve 13 cooperate simultaneously to control the one-way transportation of the oil in the liquid filling mechanism 4, the oil can only flow from the filter 3 to the liquid filling mechanism 4 and can not flow back, the priority valve 10 is connected with the second auxiliary oil tank 15, if the pressure is too high, the pipeline for conveying the oil in the priority valve 10 is turned, the pipeline is connected with the filter 3 and is changed to be connected with the second auxiliary oil tank 15, and the conveyed oil flows into the second auxiliary oil tank 15 and cannot return to the main oil tank 1, so that accidents are avoided.
Referring to fig. 4, the check valve 13 is connected with the hydraulic reversing valve 14, the hydraulic reversing valve 14 is matched with the check valve 13 to control the oil flow direction in the hydraulic mechanism, the check valve 13 is connected with the flow dividing valve 5, the flow dividing valve 5 comprises an inlet 8 and two outlets 9, the check valve 13 outputs oil from the port a of the liquid filling mechanism 4, is connected with the inlet 8 of the flow dividing valve 5, flows out from the outlets 9 on two sides after passing through the flow dividing valve 5, the two outlets 9 of the flow dividing valve 5 are respectively connected with the energy accumulators 6, and the two energy accumulators 6 are respectively connected with the brake pedal 7.
When one of the energy storage 6 pipelines breaks, the energy storage 6 of the loop is decompressed, so that the brake pedal 7 of the loop cannot normally supply oil for braking after being stepped down, the energy storage 6 on the other side can still normally operate due to the action of the flow dividing valve 5, the flow dividing valve 5 blocks the influence of the broken energy storage 6 pipeline on the energy storage 6 on the normal side, the pressurizing function of the energy storage 6 on the intact side is effectively ensured, and the energy storage 6 without pipeline breakage failure oil return can normally maintain pressure, charge and release pressure, so that the normal braking of driving is maintained.
The port A of the liquid filling mechanism 4 is connected with a pressure switch 18, the pressure switch 18 is used for measuring a pressure value, and the pressure value measured by the pressure switch 18 at the port A is the pressure value in the accumulator 6 because the outlet 9 and the inlet 8 in the flow dividing valve 5 are communicated and the pressure values are equal.
Referring to fig. 5, when the brake pedal 7 is depressed, the pressure in the accumulator 6 gradually increases, when the pressure reaches the upper limit, the hydraulic reversing valve 14 reverses, the oil cannot be transferred into the flow dividing valve 5, the oil in the charging mechanism 4 reverses through the priority valve 10 and flows into the second auxiliary oil tank 15, backflow into the main oil tank 1 is avoided, when the pressure in the accumulator 6 decreases, the hydraulic reversing valve 14 is reset, the priority valve 10 is also reset, the charging mechanism 4 is enabled to restore to charge the accumulator 6, and when the pressure value of the accumulator 6 is lower than a set value, the pressure switch 18 sends an alarm signal to a main control platform of a vehicle cab to remind a driver that the pressure in the accumulator 6 is too low, and the reliability of service braking is affected.
The two accumulators 6 are respectively connected with a pressure gauge 19, the pressure gauge 19 is arranged on a cab main control platform of the vehicle, and the pressure values in the two accumulators 6 are respectively observed according to the pressure gauge 19.
The implementation principle of the dual-loop hydraulic braking system which is not affected by each other in the embodiment of the utility model is as follows: when the brake pedal 7 is depressed, the pressure in the accumulator 6 gradually rises, when the pressure reaches the upper limit, the hydraulic reversing valve 14 reverses, the oil cannot be transferred into the flow dividing valve 5, the oil in the charging mechanism 4 reverses through the priority valve 10 and flows into the second auxiliary oil tank 15, backflow into the main oil tank 1 is avoided, and when the pressure in the accumulator 6 decreases, the hydraulic reversing valve 14 is reset, and the priority valve 10 is also reset, so that the charging mechanism 4 is restored to charge the accumulator 6.
When one of the energy storage 6 pipelines breaks, the energy storage 6 of the loop is decompressed, so that the brake pedal 7 of the loop cannot normally supply oil for braking after being stepped down, the energy storage 6 on the other side can still normally operate due to the action of the flow dividing valve 5, the flow dividing valve 5 blocks the influence of the broken energy storage 6 pipeline on the energy storage 6 on the normal side, the pressurizing function of the energy storage 6 on the intact side is effectively ensured, and the energy storage 6 without pipeline breakage failure oil return can normally maintain pressure, charge and release pressure, so that the normal braking of driving is maintained.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (6)
1. A dual-circuit hydraulic brake system that does not affect each other, characterized by: comprises a main oil tank (1), a hydraulic pump (2), a filter (3), a liquid filling mechanism (4), a flow dividing valve (5), two energy accumulators (6) and two brake pedals (7);
the main oil tank (1) is connected with the hydraulic pump (2), the hydraulic pump (2) is connected with the liquid filling mechanism (4) through the filter (3), the flow dividing valve (5) comprises an inlet (8) and two outlets (9), the liquid filling mechanism (4) is connected with the inlet (8), the two outlets (9) are respectively connected with the energy accumulator (6), and the two energy accumulators (6) are respectively connected with the brake pedal (7).
2. A dual circuit, non-interfering hydraulic brake system as defined in claim 1 wherein: the liquid filling mechanism (4) comprises a priority valve (10), a built-in filter (11), an orifice (12), a one-way valve (13) and a hydraulic reversing valve (14), wherein the filter (3) is connected with the priority valve (10), the priority valve (10) is connected with the one-way valve (13) through the built-in filter (11) and the orifice (12), and the one-way valve (13) is connected with the hydraulic reversing valve (14).
3. A dual circuit, non-interfering hydraulic brake system as defined in claim 2 wherein: the priority valve (10) is connected with a second auxiliary oil tank (15), and the priority valve (10) is used for adjusting the oil in the liquid charging mechanism (4) to flow into the second auxiliary oil tank (15) according to the reversing of the hydraulic reversing valve (14).
4. A dual circuit, non-interfering hydraulic brake system as defined in claim 1 wherein: the liquid filling mechanism (4) further comprises a safety valve (16), the filter (3) is connected with the safety valve (16), the safety valve (16) is connected with a first auxiliary oil tank (17), and the safety valve (16) is used for discharging oil into the first auxiliary oil tank (17) when the pressure in the liquid filling mechanism (4) exceeds a specified value.
5. A dual circuit, non-interfering hydraulic brake system as claimed in claim 3 wherein: the connecting node of the liquid filling mechanism (4) and the flow dividing valve (5) is also connected with a pressure switch (18), and the pressure switch (18) is used for detecting the pressure value at the position and controlling the reversing of the hydraulic reversing valve (14) according to the pressure value.
6. A dual circuit, non-interfering hydraulic brake system as defined in claim 1 wherein: the two energy accumulators (6) are respectively connected with a pressure gauge (19), and the pressure gauge (19) is used for observing the respective pressure values of the two energy accumulators (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320409537.8U CN219192168U (en) | 2023-03-07 | 2023-03-07 | Mutually-noninterfere double-loop hydraulic braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320409537.8U CN219192168U (en) | 2023-03-07 | 2023-03-07 | Mutually-noninterfere double-loop hydraulic braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219192168U true CN219192168U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320409537.8U Active CN219192168U (en) | 2023-03-07 | 2023-03-07 | Mutually-noninterfere double-loop hydraulic braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219192168U (en) |
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2023
- 2023-03-07 CN CN202320409537.8U patent/CN219192168U/en active Active
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