CN204003685U - A kind of braking in a turn hydraulic system and engineering machinery - Google Patents
A kind of braking in a turn hydraulic system and engineering machinery Download PDFInfo
- Publication number
- CN204003685U CN204003685U CN201420356513.1U CN201420356513U CN204003685U CN 204003685 U CN204003685 U CN 204003685U CN 201420356513 U CN201420356513 U CN 201420356513U CN 204003685 U CN204003685 U CN 204003685U
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- braking
- valve
- control valve
- gradient control
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Abstract
The utility model discloses a kind of engineering machinery and braking in a turn hydraulic system thereof; This braking in a turn hydraulic system comprises hydraulic-pressure pump, pressure-gradient control valve, commutator, brake valve, steering cylinder, brake cylinder and fuel tank, described hydraulic-pressure pump is connected with the filler opening of pressure-gradient control valve, and the preferential hydraulic fluid port of described pressure-gradient control valve is connected with steering cylinder by described commutator; The bypass hydraulic fluid port of described pressure-gradient control valve is connected with described brake cylinder by brake valve, and the return opening of described pressure-gradient control valve is connected with described fuel tank.This braking in a turn hydraulic system, has solved the higher and larger problem that takes up room of existing braking in a turn hydraulic system cost, in reducing energy consumption, has also improved the reliability of braking ability.
Description
Technical field
The utility model relates to hydraulics field, particularly a kind of braking in a turn hydraulic system and engineering machinery.
Background technique
The steering system of rubber-tyred roller and braking system are the two large important system that affect complete machine Safety performance, the steering system of rubber-tyred roller comprises steerig pump, commutator, steering cylinder and connects the hydraulic pipe line of above-mentioned hydraulic element at present, steerig pump separately for steering cylinder provides pressure oil, that is to say that steering system is provided the driving force that turns to use by independent steerig pump by commutator; Braking system comprises brake pump, brake valve, brake cylinder and connects the hydraulic pipe line of above-mentioned hydraulic element, and brake pump is by brake valve separately for brake cylinder provides pressure oil, and braking system is provided the driving force of braking use by independent brake pump; Like this, just must possess two independent hydraulic systems and two independent pressure oil pumps, therefore, the braking in a turn hydraulic system of existing rubber-tyred roller, not only two oil pumps take up room larger, oil cake arrange more complicated, and cost is higher, wastes energy.
Therefore, how to develop that a kind of cost is lower, the braking in a turn hydraulic system less and that energy consumption is less that takes up room is those skilled in the art's urgent problems.
Model utility content
In view of this, one of the purpose of this utility model is to propose a kind of braking in a turn hydraulic system, to solve the higher and larger problem that takes up room of existing braking in a turn hydraulic system cost.
Another object of the present utility model is to propose a kind of engineering machinery that above-mentioned braking in a turn hydraulic system is installed.
On the one hand, the utility model provides a kind of braking in a turn hydraulic system, comprise hydraulic-pressure pump, pressure-gradient control valve, commutator, brake valve, steering cylinder, brake cylinder and fuel tank, described hydraulic-pressure pump is connected with the filler opening of pressure-gradient control valve, and the preferential hydraulic fluid port of described pressure-gradient control valve is connected with steering cylinder by described commutator; The bypass hydraulic fluid port of described pressure-gradient control valve is connected with described brake cylinder by brake valve, and the return opening of described pressure-gradient control valve is connected with described fuel tank.
Further, described braking in a turn hydraulic system also comprises liquid-filling valve and accumulator, and described liquid-filling valve is connected on the oil circuit between bypass hydraulic fluid port and the brake valve of described pressure-gradient control valve, and described accumulator is connected with the oil circuit between described liquid-filling valve and brake valve.
Further, described commutator has filler opening, the first actuator port, the second actuator port and return opening, described steering cylinder comprises rod chamber and rodless cavity, the filler opening of described commutator is connected with the preferential hydraulic fluid port of pressure-gradient control valve, described the first actuator port and the second actuator port are connected with described rod chamber and rodless cavity respectively, and the return opening of described commutator is connected with fuel tank.
Further, described liquid-filling valve has filler opening, actuator port and return opening, the filler opening of described liquid-filling valve is connected with the bypass hydraulic fluid port of pressure-gradient control valve, and the actuator port of described liquid-filling valve is connected with the filler opening of brake valve and accumulator, and the return opening of described liquid-filling valve is connected with fuel tank.
On the other hand, the utility model also provides a kind of engineering machinery, and above-mentioned any one braking in a turn hydraulic system is installed.
A kind of braking in a turn hydraulic system that the utility model provides, compared with prior art, shares a hydraulic-pressure pump owing to turning to and braking, and has reduced hydraulic element, has simplified hydraulic system, has saved installing space, has also saved cost.
In further technological scheme, due to the acting in conjunction of liquid-filling valve and accumulator, ensure the reliability of braking ability.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram that turns to hydraulic braking system in the utility model specific embodiment.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 1, the utility model specific embodiment one provides a kind of braking in a turn hydraulic system, comprise hydraulic-pressure pump 1, pressure-gradient control valve 2, commutator 3, brake valve 5, steering cylinder 4, brake cylinder 6 and fuel tank 7, steering cylinder 4 comprises rod chamber 41 and rodless cavity 42, hydraulic-pressure pump 1 is connected with the oil inlet P 3 of pressure-gradient control valve 2, the preferential hydraulic fluid port CF of pressure-gradient control valve 2 is connected with the oil inlet P 1 of commutator 3, the oil return inlet T 3 of pressure-gradient control valve 2 is connected with fuel tank 7, the actuator port A1 of commutator 3 is connected with the rod chamber 41 of steering cylinder 4, the actuator port B1 of commutator 3 is connected with the rodless cavity 42 of steering cylinder 4, the oil return inlet T 1 of commutator 3 is connected with fuel tank 7, the bypass hydraulic fluid port EF of pressure-gradient control valve 2 is connected with the filler opening of brake valve 5, and the oil outlet of brake valve 5 is connected with brake cylinder 6, and the return opening of brake valve 5 is connected with fuel tank 7.In the time that needs turn to, the pressure oil that hydraulic-pressure pump 1 provides flows to the oil inlet P 1 of commutator 3 through the preferential hydraulic fluid port CF of pressure-gradient control valve 2, then is entered rod chamber 41 or the rodless cavity 42 of steering cylinder 4 by the actuator port A1 of commutator 3 or B1, turns to thereby realize; In the time that needs are braked, the pressure oil that hydraulic-pressure pump 1 provides flows to the filler opening of brake valve 5 through the bypass hydraulic fluid port EF of pressure-gradient control valve 2, then drive brake cylinder 6 to work, and realizes braking.Therefore, in this braking in a turn hydraulic system, only need to provide a hydraulic-pressure pump 1 just can realize and turning to and braking function, reduce hydraulic element, simplify hydraulic system, save space, save cost.
The utility model specific embodiment two provides another braking in a turn hydraulic system, compare specific embodiment one, this braking in a turn hydraulic system also comprises liquid-filling valve 8 and accumulator 9 (as shown in Figure 1), liquid-filling valve 8 is connected on the oil circuit between the bypass hydraulic fluid port EF of pressure-gradient control valve 2 and the filler opening of brake valve 5, and accumulator 9 is connected with the oil circuit between liquid-filling valve 8 and brake valve 5; Particularly, the bypass hydraulic fluid port EF of pressure-gradient control valve 2 is connected with the oil inlet P 2 of liquid-filling valve 8, and accumulator 9 is connected with the oil outlet B2 of liquid-filling valve 8 and the filler opening of brake valve 5, and the oil return inlet T 2 of liquid-filling valve 8 is connected with fuel tank 7.In the time that needs turn to, the pressure oil that hydraulic-pressure pump 1 provides flows to the oil inlet P 1 of commutator 3 through the preferential hydraulic fluid port CF of pressure-gradient control valve 2, then is entered rod chamber 41 or the rodless cavity 42 of steering cylinder 4 by the actuator port A1 of commutator 3 or B1, turns to thereby realize; In the time that accumulator 9 needs topping up braking, the pressure oil that hydraulic-pressure pump 1 provides flows to the oil inlet P 2 of liquid-filling valve 8 through the bypass hydraulic fluid port EF of pressure-gradient control valve 2, and then accumulator 9 is carried out to topping up; In the time that needs are braked, provide oil sources by accumulator 9, enter master cylinder through brake valve 5 and realize braking.Due to adding of liquid-filling valve 8 and accumulator 9, overcome turn to braking process in only by the unreliability of a hydraulic-pressure pump 1, having ensured has enough pressure while braking, makes brake safe reliable.
It should be noted that, hydraulic element or assembly that above-mentioned pressure-gradient control valve 2, commutator 3, brake valve 5 and liquid-filling valve 8 are known to the skilled person, its inner concrete hydraulic oil control structure is all known technology, does not elaborate at this.
In addition, the utility model specific embodiment three also provides a kind of rubber-tyred roller, and above-mentioned any one braking in a turn hydraulic system is installed, and this rubber-tyred roller has the following advantages:
1, turn to, brake a shared hydraulic-pressure pump 1 and carry out fuel feeding, simple in structure, save space, cost is also low;
2, in hydraulic system, use liquid-filling valve 8 and accumulator 9, ensure the safe and reliable of braking ability.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a braking in a turn hydraulic system, it is characterized in that, comprise hydraulic-pressure pump (1), pressure-gradient control valve (2), commutator (3), brake valve (5), steering cylinder (4), brake cylinder (6) and fuel tank (7), described hydraulic-pressure pump (1) is connected with the filler opening of pressure-gradient control valve (2), and the preferential hydraulic fluid port of described pressure-gradient control valve (2) is connected with steering cylinder (4) by described commutator (3); The bypass hydraulic fluid port of described pressure-gradient control valve (2) is connected with described brake cylinder (6) by brake valve (5), and the return opening of described pressure-gradient control valve (2) is connected with described fuel tank (7).
2. braking in a turn hydraulic system according to claim 1, it is characterized in that, also comprise liquid-filling valve (8) and accumulator (9), described liquid-filling valve (8) is connected on the oil circuit between bypass hydraulic fluid port and the brake valve (5) of described pressure-gradient control valve (2), and described accumulator (9) is connected with the oil circuit between described liquid-filling valve (8) and brake valve (5).
3. braking in a turn hydraulic system according to claim 2, it is characterized in that, described commutator (3) has filler opening, the first actuator port, the second actuator port and return opening, described steering cylinder (4) comprises rod chamber (41) and rodless cavity (42), the filler opening of described commutator (3) is connected with the preferential hydraulic fluid port of pressure-gradient control valve (2), described the first actuator port and the second actuator port are connected with described rod chamber (41) and rodless cavity (42) respectively, the return opening of described commutator (3) is connected with fuel tank (7).
4. braking in a turn hydraulic system according to claim 3, it is characterized in that, described liquid-filling valve (8) has filler opening, actuator port and return opening, the filler opening of described liquid-filling valve (8) is connected with the bypass hydraulic fluid port of pressure-gradient control valve (2), the actuator port of described liquid-filling valve (8) is connected with filler opening and the accumulator (9) of brake valve (5), and the return opening of described liquid-filling valve (8) is connected with fuel tank (7).
5. an engineering machinery, is characterized in that, the braking in a turn hydraulic system described in claim 1-4 any one is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356513.1U CN204003685U (en) | 2014-06-30 | 2014-06-30 | A kind of braking in a turn hydraulic system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356513.1U CN204003685U (en) | 2014-06-30 | 2014-06-30 | A kind of braking in a turn hydraulic system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003685U true CN204003685U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420356513.1U Expired - Fee Related CN204003685U (en) | 2014-06-30 | 2014-06-30 | A kind of braking in a turn hydraulic system and engineering machinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN204003685U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017078964A1 (en) * | 2015-11-05 | 2017-05-11 | Borgwarner Inc. | Multi-output charging device |
| CN107842531A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | The hydraulic integrated control system and vehicle of vehicle |
| CN107842533A (en) * | 2016-09-19 | 2018-03-27 | 比亚迪股份有限公司 | Preferential valve gear and there is its vehicle |
| CN110454452A (en) * | 2019-08-30 | 2019-11-15 | 山东黄金矿业(莱州)有限公司三山岛金矿 | The reliable Hydraulic System of LHD Unit of energy conservation |
-
2014
- 2014-06-30 CN CN201420356513.1U patent/CN204003685U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017078964A1 (en) * | 2015-11-05 | 2017-05-11 | Borgwarner Inc. | Multi-output charging device |
| CN107842533A (en) * | 2016-09-19 | 2018-03-27 | 比亚迪股份有限公司 | Preferential valve gear and there is its vehicle |
| CN107842533B (en) * | 2016-09-19 | 2020-03-31 | 比亚迪股份有限公司 | Priority valve device and vehicle with same |
| CN107842531A (en) * | 2016-09-21 | 2018-03-27 | 比亚迪股份有限公司 | The hydraulic integrated control system and vehicle of vehicle |
| CN107842531B (en) * | 2016-09-21 | 2019-11-22 | 比亚迪股份有限公司 | The hydraulic integrated control system and vehicle of vehicle |
| CN110454452A (en) * | 2019-08-30 | 2019-11-15 | 山东黄金矿业(莱州)有限公司三山岛金矿 | The reliable Hydraulic System of LHD Unit of energy conservation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170630 |