CN211442278U - Novel parking brake hydraulic system - Google Patents
Novel parking brake hydraulic system Download PDFInfo
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- CN211442278U CN211442278U CN201922480097.1U CN201922480097U CN211442278U CN 211442278 U CN211442278 U CN 211442278U CN 201922480097 U CN201922480097 U CN 201922480097U CN 211442278 U CN211442278 U CN 211442278U
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Abstract
The utility model relates to a novel parking brake hydraulic system, which comprises a hydraulic pump, a liquid charging valve, an energy accumulator, a handle reversing valve, a foot brake valve and an emergency manual pump; the oil outlet of the hydraulic pump is connected with a port P of the liquid charging valve, a port A of the liquid charging valve is connected with the energy accumulator, the port A of the liquid charging valve is also connected with the oil outlet of the emergency manual pump through a quick-change connector with a one-way valve, the port A of the liquid charging valve is also connected with a port P of a handle reversing valve, the port A of the handle reversing valve is connected with the port P of the pedal brake valve, and the port A of the pedal brake valve is connected with a hydraulic brake of equipment to be braked. When the parking brake fails due to the fault of the hydraulic pump or the liquid filling valve, oil can be supplied to the energy accumulator through the emergency manual pump, so that safety accidents caused by the parking brake failure are avoided; the parking brake performance can be improved through dual control of the handle reversing valve and the foot brake valve, and on the premise, only the manual handle reversing valve is added in an oil way, so that the whole system is simple in structure, and the production cost can be saved.
Description
Technical Field
The utility model relates to a parking braking system, concretely relates to novel parking braking hydraulic system.
Background
In special vehicles in coal mines and non-coal mines and mechanical equipment with higher requirements on braking performance, a parking braking system (commonly called as an oil-cut brake) is an essential part for ensuring safety; if the engine is temporarily stopped when not flameout, a driver only needs to pull the parking brake handle to a vertical position (parking position) and the oil pressure of the system is zero immediately, and the parking brake is realized. The controllability and braking performance of a parking braking system in the existing special vehicles in coal mines and non-coal mines and mechanical equipment with higher requirements on braking performance are poor, the phenomenon of vehicle sliding is often caused, and the safety is low; some parking brake systems with good parking brake performance have complex structures, resulting in high production costs.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel parking braking hydraulic system is provided, can realize saving manufacturing cost under the prerequisite that improves parking braking performance.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a novel parking brake hydraulic system comprises a hydraulic pump, a liquid charging valve, an energy accumulator, a handle reversing valve, a foot brake valve and an emergency manual pump; an oil inlet of the hydraulic pump is communicated to an oil tank, an oil outlet of the hydraulic pump is connected with a port P of the liquid charging valve, an port O and a port T of the liquid charging valve are communicated to the oil tank, a port A of the liquid charging valve is connected with the energy accumulator, the port A of the liquid charging valve is also connected with an oil outlet of the emergency manual pump through a quick-change connector with a one-way valve, an oil inlet of the emergency manual pump is communicated to the oil tank, the port A of the liquid charging valve is also connected with a port P of the handle reversing valve, the port T of the handle reversing valve is communicated to the oil tank, the port A of the handle reversing valve is connected with the port P of the foot brake valve, the port T of the foot brake valve is communicated to the oil tank, and the port A of the foot brake valve is connected to a hydraulic brake of equipment to.
The utility model has the advantages that: the utility model relates to a novel parking braking hydraulic system pumps oil to the prefill valve through the hydraulic pump, give the accumulator fuel feeding by the prefill valve, and transmit to hydraulic brake through handle switching-over valve and foot brake valve, when needing parking braking, through adjusting and controlling handle switching-over valve and foot brake valve, the oil pressure of system is zero immediately, the accumulator stores energy, realize parking braking, in addition when hydraulic pump or prefill valve break down and lead to the parking braking to be out of order, can supply oil to the accumulator through emergent manual pump, avoid the parking braking out of order to cause the incident; the parking brake performance can be improved through dual control of the handle reversing valve and the foot brake valve, and on the premise, only the manual handle reversing valve is added in an oil way, so that the whole system is simple in structure, and the production cost can be saved.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, an oil inlet of the hydraulic pump is communicated to the oil tank through a first filter, and an oil inlet of the emergency manual pump is communicated to the oil tank through a second filter.
The beneficial effect of adopting the further scheme is that: and the filter is added, so that impurities in the oil way can be filtered, and the stable operation of the system is ensured.
The oil inlet of the overflow valve is connected with the oil outlet of the hydraulic pump, and the oil outlet of the overflow valve is communicated to the oil tank.
The beneficial effect of adopting the further scheme is that: when the oil pressure of the system is too high, the pressure can be released through the overflow valve, the system is prevented from being damaged due to high pressure, and the safety of the system is ensured.
Further, still include pressure relay, pressure relay connects the A mouth department of prefill valve.
The beneficial effect of adopting the further scheme is that: can external other equipment through pressure relay, make the utility model discloses trigger external equipment work or stop work when pressure among the hydraulic system reaches the default, pressure relay has increased the utility model discloses the expansibility of function.
Furthermore, the oil outlet of the hydraulic pump is connected with a first pressure gauge, and the A port of the liquid filling valve is connected with a second pressure gauge.
The beneficial effect of adopting the further scheme is that: the oil pressure of the system can be conveniently known through the pressure gauge.
Drawings
Fig. 1 is a hydraulic schematic diagram of the novel parking brake hydraulic system of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the hydraulic brake system comprises a hydraulic pump, 2, a liquid charging valve, 3, an energy accumulator, 4, a handle reversing valve, 5, a foot brake valve, 6, an emergency manual pump, 7, a quick-change connector, 8, an oil tank, 9, a first filter, 10, an overflow valve, 11, a hydraulic brake, 12, a pressure relay, 13 and a second filter.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, a novel parking brake hydraulic system comprises a hydraulic pump 1, a charging valve 2, an accumulator 3, a handle reversing valve 4, a foot brake valve 5 and an emergency manual pump 6; an oil inlet of the hydraulic pump 1 is communicated to an oil tank 8, an oil outlet of the hydraulic pump 1 is connected with a port P of the liquid charging valve 2, an O port and a port T of the liquid charging valve 2 are communicated to the oil tank 8, a port A of the liquid charging valve 2 is connected with the energy accumulator 3, the port A of the liquid charging valve 2 is further connected with an oil outlet of the emergency manual pump 6 through a quick-change connector 7 with a one-way valve, an oil inlet of the emergency manual pump 6 is communicated to the oil tank 8, the port A of the liquid charging valve 2 is further connected with a port P of the handle reversing valve 4, the port T of the handle reversing valve 4 is communicated to the oil tank 8, the port A of the handle reversing valve 4 is connected with the port P of the foot-operated brake valve 5, the port T of the foot-operated brake valve 5 is communicated to the oil tank 8, and the port A of the foot-operated brake valve 5 is connected to a.
In the present embodiment, an oil inlet of the hydraulic pump 1 is communicated to the oil tank 8 through a first filter 9, and an oil inlet of the emergency manual pump 6 is communicated to the oil tank 8 through a second filter 13.
In this embodiment, the utility model discloses still include overflow valve 10, the oil inlet of overflow valve 10 is connected the oil-out of hydraulic pump 1, the oil-out of overflow valve 10 communicate to oil tank 8.
In this embodiment, the utility model discloses still include pressure relay 12, pressure relay 12 is connected the A mouth department of prefill valve 2.
In this embodiment, a first pressure gauge is connected to an oil outlet of the hydraulic pump 1, and a second pressure gauge is connected to an opening a of the charge valve 2.
The utility model relates to a novel parking braking hydraulic system pumps oil to the prefill valve through the hydraulic pump, give the accumulator fuel feeding by the prefill valve, and transmit to hydraulic brake through handle switching-over valve and foot brake valve, when needing parking braking, through adjusting and controlling handle switching-over valve and foot brake valve, the oil pressure of system is zero immediately, the accumulator stores energy, realize parking braking, in addition when hydraulic pump or prefill valve break down and lead to the parking braking to be out of order, can supply oil to the accumulator through emergent manual pump, avoid the parking braking out of order to cause the incident; the parking brake performance can be improved through dual control of the handle reversing valve and the foot brake valve, and on the premise, only the manual handle reversing valve is added in an oil way, so that the whole system is simple in structure, and the production cost can be saved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a novel parking brake hydraulic system which characterized in that: comprises a hydraulic pump (1), a liquid charging valve (2), an energy accumulator (3), a handle reversing valve (4), a foot-operated brake valve (5) and an emergency manual pump (6); an oil inlet of the hydraulic pump (1) is communicated to an oil tank (8), an oil outlet of the hydraulic pump (1) is connected with a port P of the liquid charging valve (2), an O port and a port T of the liquid charging valve (2) are communicated to the oil tank (8), a port A of the liquid charging valve (2) is connected with the energy accumulator (3), a port A of the liquid charging valve (2) is further connected with an oil outlet of the emergency manual pump (6) through a quick-change connector (7) with a one-way valve, an oil inlet of the emergency manual pump (6) is communicated to the oil tank (8), a port A of the liquid charging valve (2) is further connected with a port P of the handle reversing valve (4), a port T of the handle reversing valve (4) is communicated to the oil tank (8), a port A of the handle reversing valve (4) is connected with a port P of the pedal brake valve (5), and a port T of the pedal brake valve (5) is communicated to the oil tank (8), the port A of the foot brake valve (5) is connected to a hydraulic brake (11) of the equipment to be braked.
2. The novel parking brake hydraulic system according to claim 1, wherein: an oil inlet of the hydraulic pump (1) is communicated to the oil tank (8) through a first filter (9), and an oil inlet of the emergency manual pump (6) is communicated to the oil tank (8) through a second filter (13).
3. The novel parking brake hydraulic system according to claim 1 or 2, characterized in that: the hydraulic pump is characterized by further comprising an overflow valve (10), wherein an oil inlet of the overflow valve (10) is connected with an oil outlet of the hydraulic pump (1), and an oil outlet of the overflow valve (10) is communicated to the oil tank (8).
4. The novel parking brake hydraulic system according to claim 1 or 2, characterized in that: the automatic liquid filling valve is characterized by further comprising a pressure relay (12), wherein the pressure relay (12) is connected to the opening A of the liquid filling valve (2).
5. The novel parking brake hydraulic system according to claim 1 or 2, characterized in that: the oil outlet of the hydraulic pump (1) is connected with a first pressure gauge, and the A port of the liquid filling valve (2) is connected with a second pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922480097.1U CN211442278U (en) | 2019-12-31 | 2019-12-31 | Novel parking brake hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922480097.1U CN211442278U (en) | 2019-12-31 | 2019-12-31 | Novel parking brake hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211442278U true CN211442278U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922480097.1U Active CN211442278U (en) | 2019-12-31 | 2019-12-31 | Novel parking brake hydraulic system |
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| Country | Link |
|---|---|
| CN (1) | CN211442278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830061A (en) * | 2021-10-31 | 2021-12-24 | 东风商用车有限公司 | Underground unmanned braking system and method |
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2019
- 2019-12-31 CN CN201922480097.1U patent/CN211442278U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830061A (en) * | 2021-10-31 | 2021-12-24 | 东风商用车有限公司 | Underground unmanned braking system and method |
| CN113830061B (en) * | 2021-10-31 | 2022-07-05 | 东风商用车有限公司 | Underground unmanned braking system and method |
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