CN201779083U - Hydraulic control system - Google Patents
Hydraulic control system Download PDFInfo
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- CN201779083U CN201779083U CN201020510569XU CN201020510569U CN201779083U CN 201779083 U CN201779083 U CN 201779083U CN 201020510569X U CN201020510569X U CN 201020510569XU CN 201020510569 U CN201020510569 U CN 201020510569U CN 201779083 U CN201779083 U CN 201779083U
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- hydraulic control
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Abstract
The utility model relates to a hydraulic control system which comprises a first electromagnetic valve, a second electromagnetic valve, a first hydraulic cylinder, a second hydraulic cylinder, a first check valve, a second check valve, a controller and an oil supply device. Pipes and the check valves are connected in parallel between the hydraulic cylinders and the electromagnetic valves. When each hydraulic cylinder (equivalent to a brake) provides pressure (equivalent to braking), hydraulic oil enters the hydraulic cylinders through the pipes and the flow velocity of the hydraulic oil is low at the moment; and when the hydraulic cylinder is not required to provide pressure, the hydraulic oil jointly flows back through the pipes and the check valves and the flow velocity of the hydraulic oil is high at the moment. Thereby, when the two hydraulic cylinders alternately provide pressure, the situation that the time for simultaneously providing pressure by the two hydraulic cylinders is too long can be effectively avoided.
Description
Technical field
The utility model relates to a kind of hydraulic control system.
Background technique
In traditional hydraulic control system, adopt oil hydraulic cylinder usually as executive component.Specifically,, the pressure of hydraulic oil can be able to be converted to the mechanical energy of oil hydraulic cylinder, thereby realize the to-and-fro motion of piston rod in the oil hydraulic cylinder by hydraulic control system.
In the mechanism of traditional oil hydraulic cylinder, by the cooperation of various hydraulic element, as oil hydraulic pump, control valve etc., the hydraulic oil that will have higher relatively working pressure is introduced in the oil hydraulic cylinder, thereby utilizes the pressure promotion piston rod of this hydraulic oil to move.But, for traditional hydraulic control system, because the working pressure of hydraulic oil can not always keep stable in actual conditions, thereby the action of oil hydraulic cylinder under the driving of hydraulic oil (for example can not always be consistent, being used for the stroke that the piston rod of dry clutch moved under the working pressure effect that is subjected to hydraulic oil can not always be consistent), but difference slightly.When the less demanding workplace of action accuracy that is applied to oil hydraulic cylinder, the oil hydraulic cylinder of traditional hydraulic control system can be competent at.
But, in the workplace that the action accuracy of oil hydraulic cylinder is had relatively high expectations and since in traditional hydraulic control system in the oil hydraulic cylinder pressure of hydraulic oil can not accurately control, usually can produce variety of issue and can not satisfy the requirement of this workplace.For example, in the time of in the transmission system that traditional hydraulic control system is applied to automobile, usually by the joint and the disconnection of the piston rod solenoidoperated cluthes of oil hydraulic cylinder, if the pressure of hydraulic oil can accurately not controlled in the oil hydraulic cylinder of control (as dry type or wet type) clutch, can make the action (as engaging or separation) of clutch inaccurate, influence the reliable normal work of clutch.
As shown in Figure 1, prior art provides a kind of hybrid electric drive system, comprise the motor 100 that connects successively, first motor 200, first planetary gears 300, second planetary gears 600 and second motor 700, also be connected with retarder between second planetary gears 600 and second motor 700, the planet carrier of first planetary gears 300 is connected with the sun gear of second planetary gears 600 and can be by 400 braking of first break, the sun gear of first planetary gears 300 is connected with the planet carrier of second planetary gears 600 and can be by 500 braking of second break, the gear ring of first planetary gears 300 is connected with first motor 200, and the gear ring of second planetary gears 600 is connected with retarder.By braking first break 400 respectively and second break 500 can be realized two gears, thereby improve the fuel economy of motor 100.First break 400 and second break 500 provide pressure by oil hydraulic cylinder respectively.Because first planetary gears 300 links to each other with second planetary gears 600, first break 400 and second break 500 can not be braked for a long time simultaneously, otherwise will damage whole hybrid electric drive system.But adopt reasons such as same pipeline owing to oil hydraulic cylinder oil-feed and draining in the prior art, thus cause last oil hydraulic cylinder draining speed slow excessively, and then make two overlong time that break is braked simultaneously.
The model utility content
The utility model provides a kind of two breaks short hydraulic control systems of period of braking simultaneously that make for solving two long technical problems of break while period of braking in the existing hybrid electric drive system.
A kind of hydraulic control system, wherein, described hydraulic control system comprises: first solenoid valve, second solenoid valve, first oil hydraulic cylinder, second oil hydraulic cylinder and oil supplying device, described oil supplying device, first solenoid valve and first oil hydraulic cylinder are in turn connected to form the first oil-feed oil circuit, connect by first pipeline between described first oil hydraulic cylinder and first solenoid valve, be parallel with first one-way valve that is used to accelerate the first oil hydraulic cylinder draining speed on described first pipeline, described first oil hydraulic cylinder is also by described first pipeline, first one-way valve and first solenoid valve form first oil return circuit; Described oil supplying device, second solenoid valve and second oil hydraulic cylinder are in turn connected to form the second oil-feed oil circuit, connect by second pipeline between described second oil hydraulic cylinder and second solenoid valve, be parallel with second one-way valve that is used to accelerate the second oil hydraulic cylinder draining speed on described second pipeline, described second oil hydraulic cylinder is also by second pipeline, second one-way valve and second solenoid valve form second oil return circuit, described hydraulic control system also comprises the controller that is used to control first solenoid valve and the second solenoid valve work, and described first solenoid valve and second solenoid valve are electrically connected with described controller respectively.
Further, described oil supplying device comprises: fuel tank of Lian Jieing and oil pump successively, described oil pump is connected with second solenoid valve with described first solenoid valve respectively.
Described first solenoid valve all is connected with described oil pump by the 3rd pipeline with second solenoid valve.
Described the 3rd pipeline is provided with and is used to the 3rd solenoid valve controlling the 3rd pipeline conducting or end, and described the 3rd solenoid valve is electrically connected with described controller.
Described hydraulic control system also comprises: first accumulator and the 3rd one-way valve that is used to prevent hydraulic oil refluence oil sump tank, described oil pump, the 3rd one-way valve, first accumulator and the 3rd solenoid valve are connected successively.
Described hydraulic control system comprises also and is used for detecting the described first accumulator hydraulic fluid pressure and testing signal is sent to the first sensor of described controller that described first sensor is electrically connected with described controller.
Described hydraulic control system also comprises first safety valve that is connected between described first accumulator and the described fuel tank.
Also be connected with second accumulator on described the 3rd pipeline.
Described hydraulic control system comprises also and is used for detecting the described second accumulator hydraulic fluid pressure and testing signal is sent to second sensor of described controller that described second sensor is electrically connected with described controller.
Described hydraulic control system also comprises second safety valve that is connected between described second accumulator and the described fuel tank.
Also be provided with the first segment discharge orifice on described first pipeline.
Also be provided with second throttle orifice on described second pipeline.
Described first solenoid valve and second solenoid valve are two position three-way valve.
Hydraulic control system of the present utility model, in parallel pipeline and one-way valve between oil hydraulic cylinder and solenoid valve, each oil hydraulic cylinder (being equivalent to break) is providing pressure when (being equivalent to braking), and hydraulic oil enters oil hydraulic cylinder by pipeline, and this moment, the hydraulic oil flow velocity was slower; And oil hydraulic cylinder is not when needing pressure is provided, and hydraulic oil flows back to fuel tank jointly by pipeline and one-way valve, and at this moment, the hydraulic oil flow velocity is very fast.When two oil hydraulic cylinders alternately provided pressure, just can well prevent two oil hydraulic cylinders provided pressure time long situation simultaneously like this.
Description of drawings
Fig. 1 is the schematic representation of a kind of hybrid electric drive system of providing of prior art;
Fig. 2 is the schematic representation of a kind of hydraulic control system of providing of the utility model embodiment.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
According to a kind of mode of execution of the present utility model, as shown in Figure 2, a kind of hydraulic control system, this hydraulic control system comprises: first solenoid valve 9, second solenoid valve 16, first oil hydraulic cylinder 11, second oil hydraulic cylinder 13 and the oil supplying device, oil supplying device, first solenoid valve 9 and first oil hydraulic cylinder 11 are in turn connected to form the first oil-feed oil circuit, connect by first pipeline between first oil hydraulic cylinder 11 and first solenoid valve 9, be parallel with on first pipeline and be used to accelerate first one-way valve, 10, the first oil hydraulic cylinders 11 of first oil hydraulic cylinder, 11 draining speed also by first pipeline, first one-way valve 10 and first solenoid valve 9 form first oil return circuit; Oil supplying device, second solenoid valve 16 and second oil hydraulic cylinder 13 are in turn connected to form the second oil-feed oil circuit, connect by second pipeline between second oil hydraulic cylinder 13 and second solenoid valve 16, be parallel with second one-way valve 15 that is used to accelerate second oil hydraulic cylinder, 13 draining speed on second pipeline, second oil hydraulic cylinder 13 is also by second pipeline, second one-way valve 15 and second solenoid valve 16 form second oil return circuit, this hydraulic control system also comprises the controller (not shown) that is used to control first solenoid valve 9 and 16 work of second solenoid valve, and first solenoid valve 9 and second solenoid valve 16 are electrically connected with controller respectively.
Further, above-mentioned oil supplying device comprises: fuel tank 1 of Lian Jieing and oil pump 3 successively, oil pump 3 is connected with second solenoid valve 16 with first solenoid valve 9 respectively.
The 3rd pipeline is provided with the 3rd solenoid valve 8, the three solenoid valves 8 that are used to control the 3rd pipeline conducting or end and is electrically connected with controller.
Further, hydraulic control system also comprises: first accumulator 7 and the 3rd one-way valve 4 that is used to prevent hydraulic oil refluence oil sump tank, oil pump 3, the 3rd one-way valve 4, first accumulator 7 are connected successively with the 3rd solenoid valve 8.
This hydraulic control system comprises also and is used for detecting described first accumulator, 7 hydraulic fluid pressures and testing signal is sent to the first sensor 6 of controller that first sensor 6 is electrically connected with controller.
In order to guarantee that this hydraulic control system also comprises first safety valve 5 that is connected between first accumulator 7 and the fuel tank 3 fully.
Also be connected with second accumulator 17 on the 3rd pipeline.
This hydraulic control system also comprises and is used for detecting second accumulator, 17 hydraulic fluid pressures and second sensor, 18, the second sensors 18 that testing signal sends to controller are electrically connected with controller.
This hydraulic control system also comprises second safety valve 19 that is connected between second accumulator 17 and the fuel tank 1.
Further, in order better to control the speed that hydraulic oil enters first oil hydraulic cylinder 11, also be provided with first segment discharge orifice 12 on first pipeline.
Correspondingly, also be provided with second throttle orifice 14 on second pipeline.
Fuel tank 1 is as well known to those skilled in the art, as when being applied to this hydraulic control system on the vehicle, and can be with the hydraulic oil container on the vehicle or gearbox as fuel tank.
Controller can be to well known to a person skilled in the art programmable processor, for example ECU on single-chip microcomputer, dsp chip or the automobile (when this hydraulic control system is applied on the automobile) etc.
The 3rd solenoid valve 8 can be various suitable solenoid valves, as being switch electromagnetic valve, as long as can control the function that realizes switch.
First oil hydraulic cylinder 11 and second oil hydraulic cylinder 13 can be various suitable oil hydraulic cylinders, and oil hydraulic cylinder generally comprises cylinder body and piston (having piston rod).Oil hydraulic cylinder can be used for clutch (wet clutch) and break (wet brake), and according to the application difference, this hydraulic control system can be applied in the different environment.
The first segment discharge orifice 12 that is arranged on first oil hydraulic cylinder, 11 places can be various suitable devices with second throttle orifice 14 that is arranged on second oil hydraulic cylinder, 13 places, as being various damping holes, reduce as captured area hydraulic path, thereby realize the effect of throttling, can also adopt the throttle valve that to reconcile captured area as the throttle orifice in the hydraulic path.
First one-way valve 10 that is arranged on first oil hydraulic cylinder, 11 places is conventionally known to one of skill in the art with second one-way valve 15 that is arranged on second oil hydraulic cylinder, 13 places.When hydraulic oil flow during to first oil hydraulic cylinder 11, the 10 not conductings of first one-way valve, hydraulic oil can only flow into first oil hydraulic cylinder 11 by first segment discharge orifice 12; When hydraulic oil flows out first oil hydraulic cylinder 11,10 conductings of first one-way valve, hydraulic oil flows back to fuel tank 1 by the first segment discharge orifice 12 and first one-way valve 10 simultaneously.So just can be so that the piston rod of first oil hydraulic cylinder 11 slowly stretches out, returns fast.
Effect for second oil hydraulic cylinder, 13, the second one-way valves 15 and second throttle orifice 14 is also similar.Promptly the piston rod of second oil hydraulic cylinder 13 also can slowly stretch out, return fast.
In prior art as shown in Figure 1, for the phenomenon that prevents that the shift process medium power from interrupting, can there be the process of braking of short duration the time in two breaks, generally are advisable with 0.5 second, and overlong time may cause the gearbox vibration, and serious meeting damages gearbox; Time is too short may to cause power interruption.Because the oil-feed and the draining of oil hydraulic cylinder generally all adopt same pipeline in the prior art, so the draining speed of oil hydraulic cylinder is slower, and this moment, another oil hydraulic cylinder began oil-feed, thereby cause two oil hydraulic cylinders that the overlong time of power is provided simultaneously, i.e. two overlong time that break is braked simultaneously.
Adopt hydraulic control system of the present utility model, when first oil hydraulic cylinder 11 and second oil hydraulic cylinder 13 are used for break (wet brake), oil pressure when size by throttle orifice rationally is set and oil hydraulic cylinder braking, two breaks can replace fast to be realized braking and then shortens the time that two breaks are braked simultaneously, and the long problem of period of braking simultaneously can not occur.When this hydraulic control system is applied in the prior art shown in Figure 1; can better controlled realize the gear switch of whole hybrid electric drive system; and two gears long situation of onset time simultaneously can not occur, thereby can well protect whole hybrid electric drive system.
Because first oil hydraulic cylinder 11 and second oil hydraulic cylinder 13 need alternating movement, therefore, oil pump 3 needs frequent starting, like this to oil pump 3 and to drive the requirement of motor of oil pump 3 just higher.In order to reduce the requirement to oil pump 3 and motor, preferably, this hydraulic control system comprises also and is connected between the oil pump 3 and first solenoid valve 8 first accumulator 7 that oil pump 3 also is used for the hydraulic oil to first accumulator, 7 pump pressure fuel tanks 1.
Further, for the better running of control oil pump 3, this hydraulic control system also comprises the first sensor 6 that is used for detecting first accumulator, 7 hydraulic fluid pressures, first sensor 6 is electrically connected with controller, and controller also is used for the running according to first sensor 6 detected pressure signal control oil pumps 3.
First sensor 6 can be for can be used in the various existing sensors of tracer liquid pressure.
When first sensor 6 detected pressure (pressure) reached the highest setting threshold values, controller control motor was out of service, no longer injects hydraulic oil in first accumulator 7.The highest setting threshold values is bigger than minimum setting threshold values, and minimum setting threshold values can be set to be not less than and satisfy that clutch separates fully or break is braked the minimum pressure of hydraulic oil in the first required accumulator 7 fully.This minimum pressure can record by experiment.Adopt this control mode, when needs inject hydraulic oil for first accumulator 7, fill with to it, the hydraulic oil in such first accumulator 7 can repeatedly be used for the operation of clutch or break.
With further, in order to prevent first accumulator 7 when first oil hydraulic cylinder 11 or second oil hydraulic cylinder, 13 fuel feeding, fluid refluence oil sump tank 1, the outlet port of oil pump 3 is provided with the 3rd one-way valve 4.
In order to prevent that oil pressure in first accumulator 7 is too high and damage first accumulator 7, preferably, this hydraulic control system also comprises first safety valve 5 that is connected between first accumulator 7 and the fuel tank 1.
Thereby because the problem that the oil pressure that hydraulic circuit may exist fluid to reveal to be caused in the oil hydraulic cylinder descends, generally speaking, need oil pump 3 to continue pump oil or first accumulator, 7 lasting fuel feeding, but do like this, more unfavorable or there is no need concerning oil pump 3 (and motor) and first accumulator 7, therefore, further, this hydraulic control system also comprises second accumulator 17 that is connected between the 3rd solenoid valve 8 and second solenoid valve 11 and the 3rd solenoid valve 13.
The main effect of second accumulator 17 is to be used for pressurize, promptly keeps the oil pressure of first oil hydraulic cylinder 11 or second oil hydraulic cylinder 13.
Can also set a pressurize threshold values in the controller, this pressurize threshold values can separate or break required pressure values (force value) of oil hydraulic cylinder when braking fully fully for clutch, and the specified pressure (pressure) that second accumulator 17 can bear can equate with the pressurize threshold values that sets.
Further, this hydraulic control system also comprises second sensor 18 that is used for detecting second accumulator, 17 hydraulic fluid pressures, second sensor 18 is electrically connected with controller, and controller also is used for controlling being switched on or switched off of the 3rd solenoid valve 8 according to second sensor, 18 detected pressure signals.Promptly when second sensor, 18 detected pressure (pressure) values reached the pressurize threshold values, promptly may command the 3rd solenoid valve 8 disconnected; When second sensor, 18 detected pressure (pressure) values were lower than the pressurize threshold values, promptly may command the 3rd solenoid valve 8 was connected.
In order to ensure the safety of second accumulator 17, this hydraulic control system also comprises second safety valve 19 that is connected between second accumulator 17 and the fuel tank 1.
For the impurity that prevents fuel tank 1 enters whole oil hydraulic circuit, also be connected with filter 2 between fuel tank 1 and the oil pump 3.Those skilled in the art can also be provided with filter on the correct position in whole oil hydraulic circuit as required, also can be arranged between oil pump 3 and the 3rd one-way valve 4 as filter 2.
The utility model is provided with two oil hydraulic cylinders in addition, and those skilled in the art can be provided with a plurality of oil hydraulic cylinders arranged side by side on this basis as required, thereby can control the switching that realizes a plurality of gears.
Describe the working procedure of hydraulic control system of the present utility model in detail below in conjunction with Fig. 2:
At first, 3 runnings of controller control driven by motor oil pump, at this moment, the 3rd solenoid valve 8 disconnects, hydraulic oil enters first accumulator 7, when first sensor 6 detected force value (pressure values) reached the highest setting threshold values that sets, controller control motor stopped operating, and this moment, oil pump 3 was no longer to first accumulator, 7 pump oil.When 11 actions of needs first oil hydraulic cylinder, controller is controlled the oil circuit that the 3rd solenoid valve 8 is connected and controlled first solenoid valve, 9 conductings, first oil hydraulic cylinder 11, hydraulic oil in first accumulator 7 enters first oil hydraulic cylinder 11 by first segment discharge orifice 12, when the piston rod of first oil hydraulic cylinder 11 arrives desired position (can be provided with the position that a position transducer detects piston rod this moment in addition) or second sensor, 19 detected force value (pressure values) and reaches the pressurize threshold values, controller is controlled the 3rd solenoid valve 8 and is disconnected, and rely on second accumulator 17 to carry out pressurize this moment.When 13 actions of needs second oil hydraulic cylinder, controller is controlled the oil circuit of first solenoid valve 9 conductings, first oil hydraulic cylinder 11 and fuel tank 1, and the hydraulic oil in first oil hydraulic cylinder 11 flows back to fuel tank 1 by the first segment discharge orifice 12 and first one-way valve 10; Controller is controlled the oil circuit that first battery valve 8 is connected and controlled second solenoid valve, 16 conductings, second oil hydraulic cylinder 13 simultaneously, hydraulic oil in first accumulator 7 enters second oil hydraulic cylinder 13 by second throttle orifice 14 at this moment, when the piston rod of second oil hydraulic cylinder 13 arrives desired position (can be provided with the position that a position transducer detects piston rod this moment in addition) or second sensor, 19 detected force value (pressure values) and reaches the pressurize threshold values, controller is controlled the 3rd solenoid valve 8 and is disconnected, and rely on second accumulator 17 to carry out pressurize this moment.So just can realize the alternating movement of first oil hydraulic cylinder 11 and second oil hydraulic cylinder 13.
When first sensor 6 detected force value (pressure values) are lower than the minimum setting threshold values that sets, controller is just controlled driven by motor oil pump 3 and is given first accumulator, 7 pump oil, oil pressure in first accumulator 7 reaches the highest setting threshold values (in this process, the 3rd solenoid valve 8 disconnects) that sets.
Motor and oil pump 3 do not need continuous service like this, therefore can select lower-powered motor or the less oil pump of volume, thereby can reduce the volume and the cost of whole hydraulic control system.
Hydraulic control system of the present utility model, throttle orifice and one-way valve between oil hydraulic cylinder and solenoid valve, have been arranged in parallel, each oil hydraulic cylinder (being equivalent to break) is providing pressure when (being equivalent to braking), and hydraulic oil enters oil hydraulic cylinder by throttle orifice, and this moment, the hydraulic oil flow velocity was slower; And oil hydraulic cylinder is not when needing pressure is provided, and hydraulic oil flows back to fuel tank jointly by throttle orifice and one-way valve, and the hydraulic oil flow velocity is very fast.When two oil hydraulic cylinders alternately provided pressure, just can well prevent two oil hydraulic cylinders provided pressure time long situation simultaneously like this.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (13)
1. hydraulic control system, it is characterized in that, described hydraulic control system comprises: first solenoid valve, second solenoid valve, first oil hydraulic cylinder, second oil hydraulic cylinder and oil supplying device, described oil supplying device, first solenoid valve and first oil hydraulic cylinder are in turn connected to form the first oil-feed oil circuit, connect by first pipeline between described first oil hydraulic cylinder and first solenoid valve, be parallel with first one-way valve that is used to accelerate the first oil hydraulic cylinder draining speed on described first pipeline, described first oil hydraulic cylinder is also by described first pipeline, first one-way valve and first solenoid valve form first oil return circuit; Described oil supplying device, second solenoid valve and second oil hydraulic cylinder are in turn connected to form the second oil-feed oil circuit, connect by second pipeline between described second oil hydraulic cylinder and second solenoid valve, be parallel with second one-way valve that is used to accelerate the second oil hydraulic cylinder draining speed on described second pipeline, described second oil hydraulic cylinder is also by second pipeline, second one-way valve and second solenoid valve form second oil return circuit, described hydraulic control system also comprises the controller that is used to control first solenoid valve and the second solenoid valve work, and described first solenoid valve and second solenoid valve are electrically connected with described controller respectively.
2. hydraulic control system as claimed in claim 1 is characterized in that, described oil supplying device comprises: fuel tank of Lian Jieing and oil pump successively, described oil pump is connected with second solenoid valve with described first solenoid valve respectively.
3. hydraulic control system as claimed in claim 2 is characterized in that, described first solenoid valve all is connected with described oil pump by the 3rd pipeline with second solenoid valve.
4. hydraulic control system as claimed in claim 3 is characterized in that, described the 3rd pipeline is provided with and is used to the 3rd solenoid valve controlling the 3rd pipeline conducting or end, and described the 3rd solenoid valve is electrically connected with described controller.
5. hydraulic control system as claimed in claim 4, it is characterized in that, described hydraulic control system also comprises: first accumulator and the 3rd one-way valve that is used to prevent hydraulic oil refluence oil sump tank, described oil pump, the 3rd one-way valve, first accumulator and the 3rd solenoid valve are connected successively.
6. hydraulic control system as claimed in claim 5, it is characterized in that, described hydraulic control system comprises also and is used for detecting the described first accumulator hydraulic fluid pressure and testing signal is sent to the first sensor of described controller that described first sensor is electrically connected with described controller.
7. hydraulic control system as claimed in claim 6 is characterized in that, described hydraulic control system also comprises first safety valve that is connected between described first accumulator and the described fuel tank.
8. hydraulic control system as claimed in claim 5 is characterized in that, also is connected with second accumulator on described the 3rd pipeline.
9. hydraulic control system as claimed in claim 8, it is characterized in that, described hydraulic control system comprises also and is used for detecting the described second accumulator hydraulic fluid pressure and testing signal is sent to second sensor of described controller that described second sensor is electrically connected with described controller.
10. hydraulic control system as claimed in claim 9 is characterized in that, described hydraulic control system also comprises second safety valve that is connected between described second accumulator and the described fuel tank.
11. hydraulic control system as claimed in claim 1 is characterized in that, also is provided with the first segment discharge orifice on described first pipeline.
12. hydraulic control system as claimed in claim 1 is characterized in that, also is provided with second throttle orifice on described second pipeline.
13. hydraulic control system as claimed in claim 1 is characterized in that, described first solenoid valve and second solenoid valve are two position three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020510569XU CN201779083U (en) | 2010-08-25 | 2010-08-25 | Hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020510569XU CN201779083U (en) | 2010-08-25 | 2010-08-25 | Hydraulic control system |
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| CN201779083U true CN201779083U (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020510569XU Expired - Lifetime CN201779083U (en) | 2010-08-25 | 2010-08-25 | Hydraulic control system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261056A (en) * | 2011-05-06 | 2011-11-30 | 衢州市河川翻板闸门有限公司 | Hydraulic control system of flap gate |
| CN103727097A (en) * | 2013-11-25 | 2014-04-16 | 无锡京华重工装备制造有限公司 | Protecting device of energy accumulator |
| TWI494232B (en) * | 2011-08-05 | 2015-08-01 | Byd Co Ltd | Drive system and electric vehicle having the same |
| CN106594261A (en) * | 2015-10-15 | 2017-04-26 | 上海汽车集团股份有限公司 | Hydraulic clutch operation system, control unit, gearbox and automobile |
| CN107387468A (en) * | 2017-08-28 | 2017-11-24 | 福建龙马环卫装备股份有限公司 | The guide's energy-saving control system and its control method of trash compactor hydraulic circuit |
| CN110206771A (en) * | 2019-05-20 | 2019-09-06 | 广州宝力特液压密封有限公司 | A kind of hydraulic system for recreation facility |
| CN110259743A (en) * | 2019-06-24 | 2019-09-20 | 绍兴文理学院 | A kind of hydraulic cylinder autonomous control system of rock triaxial creep testing machine |
| CN110762069A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Hydraulic control system |
| US20250027561A1 (en) * | 2022-06-21 | 2025-01-23 | Oshkosh Defense, Llc | Tracked combat vehicle with integrated motor brake having clutch sensors |
-
2010
- 2010-08-25 CN CN201020510569XU patent/CN201779083U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261056A (en) * | 2011-05-06 | 2011-11-30 | 衢州市河川翻板闸门有限公司 | Hydraulic control system of flap gate |
| CN102261056B (en) * | 2011-05-06 | 2013-01-30 | 衢州市河川翻板闸门有限公司 | Hydraulic control system of flap gate |
| TWI494232B (en) * | 2011-08-05 | 2015-08-01 | Byd Co Ltd | Drive system and electric vehicle having the same |
| CN103727097A (en) * | 2013-11-25 | 2014-04-16 | 无锡京华重工装备制造有限公司 | Protecting device of energy accumulator |
| CN106594261A (en) * | 2015-10-15 | 2017-04-26 | 上海汽车集团股份有限公司 | Hydraulic clutch operation system, control unit, gearbox and automobile |
| CN107387468A (en) * | 2017-08-28 | 2017-11-24 | 福建龙马环卫装备股份有限公司 | The guide's energy-saving control system and its control method of trash compactor hydraulic circuit |
| CN110762069A (en) * | 2018-07-27 | 2020-02-07 | 比亚迪股份有限公司 | Hydraulic control system |
| CN110762069B (en) * | 2018-07-27 | 2021-05-14 | 比亚迪股份有限公司 | Hydraulic control system |
| CN110206771A (en) * | 2019-05-20 | 2019-09-06 | 广州宝力特液压密封有限公司 | A kind of hydraulic system for recreation facility |
| CN110206771B (en) * | 2019-05-20 | 2020-06-16 | 广州宝力特液压密封有限公司 | Hydraulic system for recreation facility |
| CN110259743A (en) * | 2019-06-24 | 2019-09-20 | 绍兴文理学院 | A kind of hydraulic cylinder autonomous control system of rock triaxial creep testing machine |
| US20250027561A1 (en) * | 2022-06-21 | 2025-01-23 | Oshkosh Defense, Llc | Tracked combat vehicle with integrated motor brake having clutch sensors |
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