CN109812458B - Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof - Google Patents
Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof Download PDFInfo
- Publication number
- CN109812458B CN109812458B CN201711154705.9A CN201711154705A CN109812458B CN 109812458 B CN109812458 B CN 109812458B CN 201711154705 A CN201711154705 A CN 201711154705A CN 109812458 B CN109812458 B CN 109812458B
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- communicated
- hydraulic
- oil inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a hydraulic distribution valve suitable for hydraulic transmission machinery, which comprises: the oil inlet is suitable for outputting transmission oil; the sequence valve is suitable for setting pressure to provide pilot control oil to realize sequential action of a plurality of elements, and the oil inlet is communicated with the sequence valve; the energy accumulator is suitable for the operating handle to control the working device to descend to the ground, and the oil inlet is communicated with the energy accumulator; the stop valve is suitable for providing control oil for the matched walking and working pilot handles, and the energy accumulator is communicated with the stop valve; the solenoid valve is suitable for receiving the guide handle signal and output control oil, and the solenoid valve communicates with the trip valve. The hydraulic distribution valve suitable for the hydraulic transmission machinery has the advantages of low cost and flexible arrangement, effectively improves the operating performance of the hydraulic transmission bulldozer, is suitable for pilot control, and effectively solves the problem of serious abrasion due to the reaction lag of the mechanical control steering brake under severe working conditions.
Description
Technical Field
The invention belongs to a hydraulic distribution valve, and particularly relates to a hydraulic distribution valve suitable for hydraulic transmission machinery.
Background
The traditional hydraulic mechanical bulldozer uses mechanical connecting rods to realize walking and operating device operation, main operating rods comprise a front gear shift lever, a rear gear shift lever, a left steering brake lever, a right steering brake lever and an operating device operating rod, a multi-connecting-rod operating device has high requirements on the operating level of a driver, the operation is complex, the operation of the existing bulldozer tends to be controlled by a single handle, and compared with a hydraulic control pilot operation mode, the hydraulic control pilot operation mode is labor-saving in operation and flexible in arrangement, and compared with an electric control operating device, the hydraulic control pilot operation mode is.
The transmission mode of the crawler dozer mainly comprises mechanical transmission, hydraulic power transmission and hydrostatic transmission. The mechanical transmission is reliable, the transmission efficiency is high, the maintenance is convenient, but the speed can not be adjusted by adapting to the change of external resistance, and the working efficiency is low; the hydrostatic transmission has compact structure and flexible steering, but has low transmission efficiency, high price and cost and difficult maintenance; the hydraulic transmission mode can automatically adjust the running speed and traction force according to the change of external resistance, prevent the engine from flameout, improve the traction performance and production efficiency of the bulldozer, keep the starting and acceleration of the bulldozer stable due to the vibration prevention and isolation performance, and prolong the service life. Therefore, hydraulic transmission is still the main transmission mode of the current large and medium bulldozers.
Disclosure of Invention
In order to provide a hydraulic distribution valve, the invention provides a hydraulic distribution valve suitable for a hydraulic transmission machine.
The invention provides a hydraulic system suitable for hydraulic transmission machinery, comprising:
an oil inlet adapted to output transmission oil;
a sequence valve adapted to set a pressure to provide pilot control oil to effect sequential actuation of a plurality of elements, the oil inlet being in communication with the sequence valve;
the energy accumulator is suitable for operating the handle to control the working device to descend to the ground, and the oil inlet is communicated with the energy accumulator;
the stop valve is suitable for providing control oil for a matched walking and working pilot handle, the energy accumulator is communicated with the stop valve, and the sequence valve is communicated with the stop valve;
and the sequence valve and the stop valve are respectively communicated with the oil return port, and the oil return port is communicated with an external oil tank.
Preferably, the system further comprises a pressure gauge valve which is suitable for monitoring the oil pressure and communicated with the electromagnetic valve.
Preferably, the oil-saving control device also comprises a speed change valve and a solenoid valve, wherein the solenoid valve is suitable for receiving a pilot handle signal and outputting control oil,
the speed change valve is suitable for achieving a speed change function, the speed change valve is communicated with the electromagnetic valve through the first circulation port and the second circulation port respectively, and the electromagnetic valve is communicated with the oil return port.
Preferably, the oil pump further comprises a transmission gear pump, the transmission gear pump is suitable for inputting transmission oil for outputting, and the transmission gear pump is communicated with the oil inlet.
Preferably, the oil purifier further comprises a precision filter, the precision filter is suitable for purifying transmission oil in the transmission gear pump, one end of the precision filter is communicated with the transmission gear pump, and the other end of the precision filter is communicated with the oil inlet.
Preferably, the automatic transmission further comprises a first outflow port and a second outflow port, the first outflow port and the second outflow port are suitable for being connected with a torque converter, a transmission, a steering brake valve, a steering clutch and a brake, and the first outflow port and the second outflow port are respectively communicated with the sequence valve.
The utility model provides a hydraulic pressure distributing valve suitable for hydraulic drive machinery, be provided with as above on the hydraulic pressure distributing valve hydraulic system, the front portion of manometer valve is provided with first outflowing port the second outflowing port first circulation port and access hole, a lateral part of manometer valve has the oil return opening with second circulation port, another lateral part of manometer valve has the oil inlet, upper portion is provided with the sequence valve with the energy storage ware, the lower part is provided with the solenoid valve, the lateral part is provided with the trip valve.
The hydraulic distribution valve for the hydraulic transmission machine has the beneficial effects that the hydraulic distribution valve is suitable for the hydraulic transmission machine, is low in cost and flexible in arrangement, effectively improves the operating performance of the hydraulic transmission bulldozer, is suitable for pilot control, and effectively solves the problem of serious abrasion due to the reaction lag of the mechanical control steering brake under severe working conditions.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic illustration of a hydraulic system suitable for use in a fluid-driven machine according to the present invention.
Fig. 2 is a schematic diagram of a hydraulic distribution valve suitable for use in a hydraulic drive machine according to the present invention.
Fig. 3 is a schematic diagram of a hydraulic distribution valve suitable for use in a hydraulic drive machine according to the present invention.
Fig. 4 is a right side view of a hydraulic distribution valve adapted for use in a hydraulic drive machine according to the present invention.
1. Sequence valve, 2, accumulator, 3, trip valve, 4, solenoid valve, 5, pressure gauge valve, P, oil inlet, a, first circulation mouth, b, second circulation mouth, M2, first external flow mouth, L, second external flow mouth, T, oil return port, M1, access hole.
Detailed Description
As shown in fig. 1 to 4, the present invention provides a first embodiment: a hydraulic system adapted for use with a hydraulic drive machine, comprising: the oil inlet P is suitable for outputting transmission oil; the sequence valve 1 is suitable for setting pressure to provide pilot control oil to realize sequential action of a plurality of elements, and the oil inlet P is communicated with the sequence valve 1; the energy accumulator 2 is suitable for operating the handle to control the working device to descend to the ground, and the oil inlet P is communicated with the energy accumulator 2; the energy accumulator 2 is communicated with the cut-off valve 3, and the sequence valve 1 is communicated with the cut-off valve 3; and the oil return port T, the sequence valve 1 and the stop valve 3 are respectively communicated with the oil return port T, and the oil return port T is communicated with an external oil tank.
The invention provides a second specific embodiment: a hydraulic system adapted for use with a hydraulic drive machine, comprising: the oil inlet P is suitable for outputting transmission oil; the sequence valve 1 is suitable for setting pressure to provide pilot control oil to realize sequential action of a plurality of elements, and the oil inlet P is communicated with the sequence valve 1; the energy accumulator 2 is suitable for operating the handle to control the working device to descend to the ground, and the oil inlet P is communicated with the energy accumulator 2; the energy accumulator 2 is communicated with the cut-off valve 3, and the sequence valve 1 is communicated with the cut-off valve 3; and the oil return port T, the sequence valve 1 and the stop valve 3 are respectively communicated with the oil return port T, and the oil return port T is communicated with an external oil tank.
The hydraulic distribution valve suitable for the hydraulic transmission machine further comprises a pressure gauge valve 5 suitable for monitoring oil pressure, and the pressure gauge valve 5 is communicated with the electromagnetic valve 4.
The invention provides a third concrete embodiment:
a hydraulic system adapted for use with a hydraulic drive machine, comprising: the oil inlet P is suitable for outputting transmission oil; the sequence valve 1 is suitable for setting pressure to provide pilot control oil to realize sequential action of a plurality of elements, and the oil inlet P is communicated with the sequence valve 1; the energy accumulator 2 is suitable for operating the handle to control the working device to descend to the ground, and the oil inlet P is communicated with the energy accumulator 2; the energy accumulator 2 is communicated with the cut-off valve 3, and the sequence valve 1 is communicated with the cut-off valve 3; and the oil return port T, the sequence valve 1 and the stop valve 3 are respectively communicated with the oil return port T, and the oil return port T is communicated with an external oil tank.
The hydraulic distribution valve suitable for the hydraulic transmission machine further comprises a pressure gauge valve 5 suitable for monitoring oil pressure, and the pressure gauge valve 5 is communicated with the electromagnetic valve 4.
The hydraulic distribution valve suitable for the hydraulic transmission machine also comprises a speed change valve and an electromagnetic valve 4, wherein the electromagnetic valve 4 is suitable for receiving a pilot handle signal and outputting control oil,
the speed change valve is suitable for realizing a speed change function, and is communicated with the electromagnetic valve 4 through the first circulation port a and the second circulation port b respectively, and the electromagnetic valve 4 is communicated with the oil return port T.
The invention provides a fourth concrete embodiment:
a hydraulic system adapted for use with a hydraulic drive machine, comprising:
the oil inlet P is suitable for outputting transmission oil;
the sequence valve 1 is suitable for setting pressure to provide pilot control oil to realize sequential action of a plurality of elements, and the oil inlet P is communicated with the sequence valve 1;
the energy accumulator 2 is suitable for operating the handle to control the working device to descend to the ground, and the oil inlet P is communicated with the energy accumulator 2;
the energy accumulator 2 is communicated with the cut-off valve 3, and the sequence valve 1 is communicated with the cut-off valve 3;
and the oil return port T, the sequence valve 1 and the stop valve 3 are respectively communicated with the oil return port T, and the oil return port T is communicated with an external oil tank.
The hydraulic system suitable for the hydraulic transmission machine further comprises a pressure gauge valve 5 suitable for monitoring oil pressure, and the pressure gauge valve 5 is communicated with the electromagnetic valve 4.
The hydraulic system suitable for the hydraulic transmission machine further comprises a speed change valve and an electromagnetic valve 4, wherein the electromagnetic valve 4 is suitable for receiving a pilot handle signal and outputting control oil, the speed change valve is suitable for achieving a speed change function, the speed change valve is communicated with the electromagnetic valve 4 through a first circulation port a and a second circulation port b respectively, and the electromagnetic valve 4 is communicated with an oil return port T.
The hydraulic system suitable for the hydraulic transmission machine further comprises a transmission gear pump, the transmission gear pump is suitable for inputting and outputting transmission oil, and the transmission gear pump is communicated with the oil inlet P.
The hydraulic system suitable for the hydraulic transmission machine further comprises a precision filter, the precision filter is suitable for purifying transmission oil in the transmission gear pump, one end of the precision filter is communicated with the transmission gear pump, and the other end of the precision filter is communicated with the oil inlet P.
The hydraulic system suitable for the hydraulic transmission machine further comprises a first outflow port M2 and a second outflow port L, wherein the first outflow port M2 and the second outflow port L are suitable for connecting a torque converter, a gearbox, a steering brake valve, a steering clutch and a brake, and the first outflow port M2 and the second outflow port L are respectively communicated with the sequence valve 1.
A hydraulic distribution valve suitable for hydraulic transmission machinery is provided with the hydraulic system, a pressure gauge valve 5 is provided with a first outflow port M2, a second outflow port L and a first circulation port a at the front part, a pressure gauge valve 5 is provided with an oil return port T and a second circulation port b at one side part, the pressure gauge valve 5 is provided with an oil inlet P at the other side part, a sequence valve 1 and an accumulator 2 are arranged at the upper part, an electromagnetic valve 4 is arranged at the lower part, a cut-off valve 3 is arranged at the side part, and a maintenance port M2 is arranged on the pressure gauge valve 5.
When the whole bulldozer is started, the transmission gear pump serves as a power source of a transmission and control system, a sequence valve 1 is arranged in the system to preferentially provide pressure oil for the control system, the control system is guaranteed to be fast in response and reliable in performance, an energy accumulator 2 and a stop valve 3 are arranged to guarantee the operation and the walking operation of a working device to be safe and reliable, an integrated gear shifting electromagnetic valve 4 provides pilot oil for a speed changing valve, a pressure gauge valve 5 is additionally arranged, the pressure of the speed changing valve is monitored to be kept in a set range, the gear shifting action of the bulldozer is fast in response, the stable speed changing pressure improves the service life of transmission of a gearbox, and otherwise. The hydraulic transmission bulldozer is an effective technical scheme for realizing left and right single-handle pilot control of the hydraulic transmission bulldozer.
At present, most of domestic bulldozers are still operated by mechanical connecting rods, the operation is complicated, the operation force is large, the fatigue of drivers is easily caused by long-time work, and the requirement on the operation level of the drivers is high. The operation of the single-handle pilot control system is more in line with the man-machine engineering design, the speed change, steering and working devices are convenient and flexible to operate, the speed change valve and the steering brake valve are matched to effectively control a gearbox, a steering clutch and a brake, in addition, the gear shifting electromagnetic valve 4 adopts electric signal control, the programmable development design can be conveniently combined, the automatic gear increasing and reducing speed change functions under different load working conditions are realized, the oil consumption is effectively reduced, and the working efficiency of the whole machine is improved.
The oil inlet P is transmission oil output by a transmission gear pump through a precision filter, the set pressure of the sequence valve 1 preferentially provides pilot control oil to the cut-off valve 3, the cut-off valve 3 is communicated after the whole machine is electrified and provides control oil for the matched walking and working pilot handles, the energy accumulator 2 can ensure that the operating handles of a scraper knife, a scarifier and other working devices can smoothly descend to the ground after the engine is flamed out, and meanwhile, the vibration absorption function keeps the pressure of the control system stable.
The transmission oil passing through the sequence valve 1 establishes the pressure of a walking hydraulic system under the action of a matched pressure regulating valve, and the transmission oil is output to the first outflow port M2 and the second outflow port L to be connected with components such as a torque converter, a speed change valve, a gearbox, a steering brake valve, a steering clutch, a brake and the like, so that the transmission requirement of a walking machine is met.
The electromagnetic valve 4 is reversed through an electric control button on a matched pilot handle, control oil is supplied to the speed change valve from the first circulation port a and the second circulation port b, and the I, II and III gear speed change functions can be realized.
The pressure gauge valve 5 monitors the control pressure of the transmission valve, and sends out an alarm signal when the pressure exceeds an allowable range, so that the accelerated wear of gears caused by difficult meshing and incomplete separation of the gears of the transmission under the control of low pressure is avoided.
Claims (4)
1. A hydraulic system adapted for use in a fluid-driven machine, comprising: the method comprises the following steps:
an oil inlet (P) adapted to output transmission oil;
a sequence valve (1), said sequence valve (1) being adapted to set a pressure to provide a pilot control oil to effect sequential action of a plurality of elements, said oil inlet (P) being in communication with said sequence valve (1);
the energy accumulator (2) is suitable for an operating handle to control the working device to descend to the ground, the oil inlet (P) is communicated with the energy accumulator (2), and a one-way valve is arranged between the energy accumulator (2) and the oil inlet (P);
the energy accumulator is characterized by comprising a stop valve (3), wherein the stop valve (3) is suitable for providing control oil for a matched walking and working pilot handle, the energy accumulator (2) is communicated with the stop valve (3), and the sequence valve (1) is communicated with the stop valve (3);
the sequence valve (1) and the stop valve (3) are respectively communicated with the oil return port (T), and the oil return port (T) is communicated with an external oil tank;
the hydraulic system further comprises a first outflow port (M2) and a second outflow port (L), the first outflow port (M2) and the second outflow port (L) are suitable for connecting a torque converter, a gearbox, a steering brake valve, a steering clutch and a brake, and the first outflow port (M2) and the second outflow port (L) are respectively communicated with the sequence valve (1);
hydraulic system still includes manometer valve (5), change speed valve and solenoid valve (4), and manometer valve (5) are suitable for the monitoring oil pressure, manometer valve (5) with solenoid valve (4) intercommunication, solenoid valve (4) are suitable for receiving guide's handle signal and output control oil, the change speed valve is suitable for realizing the variable speed function, the change speed valve respectively through first circulation mouth (a) and second circulation mouth (b) with solenoid valve (4) intercommunication, solenoid valve (4) with oil return opening (T) intercommunication.
2. A hydraulic system adapted for use with a hydraulic drive machine as defined in claim 1, wherein: the oil inlet (P) is communicated with the oil inlet (P), and the oil inlet (P) is communicated with the oil inlet (P).
3. A hydraulic system adapted for use with a hydraulic drive machine as defined in claim 2, wherein: the oil purifier further comprises a precision filter, the precision filter is suitable for purifying transmission oil in the transmission gear pump, one end of the precision filter is communicated with the transmission gear pump, and the other end of the precision filter is communicated with the oil inlet (P).
4. A hydraulic distribution valve adapted for use in a hydraulic drive machine, comprising: the hydraulic system of any one of claims 1 to 3 is arranged on the hydraulic distribution valve, the front portion of the pressure gauge valve (5) is provided with the first outflow port (M2), the second outflow port (L), the first outflow port (a) and the access port (M1), one side portion of the pressure gauge valve (5) is provided with the oil return port (T) and the second outflow port (b), the other side portion of the pressure gauge valve (5) is provided with the oil inlet (P), the upper portion of the pressure gauge valve (5) is provided with the sequence valve (1) and the energy accumulator (2), the lower portion of the pressure gauge valve (5) is provided with the electromagnetic valve (4), and the side portion of the pressure gauge valve (5) is provided with the cut-off valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154705.9A CN109812458B (en) | 2017-11-20 | 2017-11-20 | Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711154705.9A CN109812458B (en) | 2017-11-20 | 2017-11-20 | Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109812458A CN109812458A (en) | 2019-05-28 |
| CN109812458B true CN109812458B (en) | 2021-05-04 |
Family
ID=66599249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711154705.9A Active CN109812458B (en) | 2017-11-20 | 2017-11-20 | Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812458B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089160A (en) * | 2019-12-31 | 2020-05-01 | 柳工常州机械有限公司 | Hydraulic valve for pilot hydraulic control |
| CN113757271A (en) * | 2021-09-15 | 2021-12-07 | 英轩重工有限公司 | Electric control speed change valve for gearbox |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121483A (en) * | 2010-01-12 | 2011-07-13 | 何扬东 | Speed-increasing stress-applying double-pump converging device with adjustable energy accumulating pressure |
| CN202690347U (en) * | 2012-05-30 | 2013-01-23 | 三一重工股份有限公司 | Concrete pump swinging cylinder hydraulic system and concrete pumping device |
| CN102889273B (en) * | 2012-10-18 | 2015-07-22 | 浙江大学 | Electro-hydraulic system for recycling and releasing potential energy of engineering machinery |
| CN103994107A (en) * | 2014-06-06 | 2014-08-20 | 山东中川液压有限公司 | Hydraulic power energy accumulator energy charging device |
| CN204476885U (en) * | 2015-03-06 | 2015-07-15 | 山推工程机械股份有限公司 | A kind of pilot fuel feeding hydraulic system of working |
-
2017
- 2017-11-20 CN CN201711154705.9A patent/CN109812458B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109812458A (en) | 2019-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102792070B (en) | Hydraulic system for actuating an interlocking switching element of a gearing device | |
| CN201125402Y (en) | Automatic control operation mode loading apparatus | |
| CN102330759B (en) | Hydraulic system and hybrid power vehicle comprising same | |
| CN201685704U (en) | Electric forklift hydraulic device used with single power source | |
| CN108644166B (en) | Electromagnetic hydraulic valve | |
| CN109812458B (en) | Hydraulic distribution valve suitable for hydraulic transmission machinery and hydraulic system thereof | |
| CN101148895A (en) | Intelligent energy-saving loading machine | |
| CN201152297Y (en) | Engineering machinery speed-changer electrohydraulic gear shifting control valve | |
| CN110017309B (en) | Walking motor speed control system with manual and automatic gear shifting functions | |
| CN202627061U (en) | Hydraulic driving wheel type excavator gear-shifting device | |
| CN104295734B (en) | A kind of wheel excavator with automatic transimission | |
| CN204099575U (en) | The proportional hydraulic control system of fork truck hydraulic transmission gearbox | |
| CN104019225B (en) | A kind of torque converter control system | |
| CN204114099U (en) | A kind of hydraulic transmission gearbox proportional hydraulic control system for fork truck | |
| CN203272767U (en) | Multifunctional electro-hydraulic control operating valve | |
| CN204226568U (en) | The automatically controlled speed variator system of a kind of bulldozer | |
| CN111802010B (en) | Hydraulic pump postposition type tractor electrohydraulic suspension system | |
| CN201288716Y (en) | Multi-oil path speed variant control valve | |
| CN101798830B (en) | Back pressure control method of hydraulic digging machine | |
| CN212407535U (en) | Tractor electrohydraulic control gearshift | |
| CN103882895A (en) | Intelligent energy-saving loader | |
| CN205001500U (en) | Automatically controlled gearbox hydraulic control device of loader | |
| CN102390372B (en) | Hydraulic control power cutting device of down-hole trackless rubber-tyred car | |
| CN201944035U (en) | Controllable low-speed large-torque power head motor | |
| CN203702924U (en) | Control system used for controlling clutch of working device of agricultural machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |