CN209908882U - Motor shell back pressure valve of bulldozer walking hydraulic system - Google Patents
Motor shell back pressure valve of bulldozer walking hydraulic system Download PDFInfo
- Publication number
- CN209908882U CN209908882U CN201920201646.4U CN201920201646U CN209908882U CN 209908882 U CN209908882 U CN 209908882U CN 201920201646 U CN201920201646 U CN 201920201646U CN 209908882 U CN209908882 U CN 209908882U
- Authority
- CN
- China
- Prior art keywords
- oil
- port
- motor
- valve
- valve body
- 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
Abstract
A motor shell back pressure valve of a bulldozer walking hydraulic system belongs to the technical field of bulldozer walking hydraulic system equipment. The technical scheme is as follows: and oil return liquid of the shells of the first motor, the second motor, the first pump and the second pump enters an oil duct inside the valve body of the back pressure valve and then enters the radiator through an oil port of the radiator to be radiated. And return oil of the radiator enters an oil duct inside the backpressure valve body through an oil outlet of the radiator, and then returns to the oil tank through an oil return port of the oil receiving tank. The pressure oil inlet is communicated with the oil ducts of the first motor control oil port and the second motor control oil port in the back pressure valve body, and pressure oil can be provided for the adjustment swing angle change of the motor and the pump at any time. The switch of the parking brake valve controls the on-off of the pressure oil inlet and the left and right brake pressure oil ports in the oil duct in the back pressure valve body. The utility model discloses not only can realize the fast switch-over of oil circuit, peripheral pipeline is simple moreover to the manufacturing cost of system has been reduced, the operational reliability of system has been improved.
Description
Technical Field
The utility model relates to a motor housing back pressure valve for bull-dozer walking hydraulic system belongs to bull-dozer walking hydraulic system equipment technical field.
Background
When the bulldozer is in use, a motor shell of a bulldozer walking hydraulic system needs oil return, a pump shell needs oil return, and oil supplementing residual oil needs oil return.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a bull-dozer walking hydraulic system's motor casing back pressure valve is provided, this kind of motor casing back pressure valve can reduce the quantity of hydraulic line, optimizes the pipeline and arranges, and reduce cost improves bull-dozer walking hydraulic system's reliability.
The technical scheme for solving the technical problems is as follows:
a motor shell back pressure valve of a bulldozer walking hydraulic system comprises a valve body, a parking brake valve and a check valve, wherein the valve body is provided with a first pump shell oil drainage port, a second pump shell oil drainage port, a first motor shell oil drainage port, a second motor shell oil drainage port, a pressure oil inlet, a first motor control oil port, a second motor control oil port, a left brake pressure oil port, a right brake pressure oil port, a pressure measurement port, a radiator inlet, a radiator outlet, an oil tank oil return port, a check valve interface and a parking brake valve interface, the parking brake valve is arranged at the parking brake valve interface, the check valve is arranged at the check valve interface, the first pump shell oil drainage port, the second pump shell oil drainage port, the first motor shell oil drainage port, the second motor shell oil drainage port and the radiator inlet are communicated through oil ducts in the valve body, the radiator outlet is communicated with the oil tank oil return port through an oil duct in, pressure oil inlet and a motor and No. two motor control hydraulic fluid ports are linked together through the oil duct in the valve body, the pressure measurement mouth is linked together through the oil duct with controlling the braking pressure hydraulic fluid port in the valve body, parking brake valve and radiator hydraulic fluid port, the oil duct that connects the oil tank oil return opening is connected, parking brake valve still with the pressure oil inlet, a motor and No. two motor control hydraulic fluid ports, the oil duct of controlling the braking pressure hydraulic fluid port is connected, two check valves respectively with advance the radiator hydraulic fluid port, pump casing draining port, No. two pump casing draining ports, motor casing draining port, the oil duct of No. two motor casing draining ports is connected.
The motor shell back pressure valve of the bulldozer walking hydraulic system is characterized in that the valve body is provided with three mounting holes, the three mounting holes are through holes, the valve body is further provided with a standby port, and the standby port is communicated with connecting oil ducts of the pressure oil inlet, the first motor and the second motor control oil port.
The utility model has the advantages that:
the utility model discloses add motor housing back pressure valve in original hydraulic line, the back pressure valve includes valve body, parking brake valve, check valve, and original hydraulic line is linked together through different oil ducts in the valve body, and the different oil ducts are through the break-make of parking brake valve and check valve, and the different flow to break-make of fluid in the completion oil duct changes, realizes the function of back pressure valve. The utility model discloses not only can realize the fast switch over of oil circuit, peripheral pipeline is simple moreover to reduce bull-dozer walking hydraulic system's manufacturing cost, improved bull-dozer walking hydraulic system's operational reliability.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a left side view of the present invention;
fig. 3 is a right side view of the present invention;
fig. 4 is a top view of the present invention;
fig. 5 is a bottom view of the present invention;
fig. 6 is a rear view of the present invention;
fig. 7 is a hydraulic schematic diagram of the valve body of the present invention.
The figures are labeled as follows: valve body BL, pump casing draining port CD1, pump casing draining port CD2, motor casing draining port CD3, motor casing draining port CD4, pressure oil inlet PIL, motor and motor control oil port IN, control brake pressure hydraulic fluid port PB, pressure measurement port M, radiator oil inlet C, radiator oil outlet CR, connect oil tank oil return port T, check valve DF, parking brake valve TF, mounting hole AK, reserve mouth FL.
Detailed Description
The utility model discloses a valve body BL, parking brake valve TF, check valve DF.
The figure shows that a first pump shell oil drainage port CD1, a second pump shell oil drainage port CD2, a first motor shell oil drainage port CD3, a second motor shell oil drainage port CD4, a pressure oil inlet PIL, a first motor and a second motor control oil port IN, a left brake pressure oil port PB, a right brake pressure oil port PB, a pressure measurement port M, a radiator inlet oil port C, a radiator outlet oil port CR, an oil receiving tank oil return port T, a mounting hole AK, a spare port FL, a parking brake valve interface and a one-way valve interface are arranged on a valve body BL, and the interfaces are all threaded interfaces.
In the figure, a first pump housing oil drainage port CD1, a second pump housing oil drainage port CD2, a first motor housing oil drainage port CD3, a second motor housing oil drainage port CD4 and a radiator inlet C are shown to be communicated with each other through oil passages in a valve body BL.
The radiator oil outlet CR is communicated with an oil tank oil return port T in the valve body BL through an oil duct.
The pressure oil inlet PIL is communicated with the first motor and the second motor control oil port IN through oil ducts IN the valve body BL.
The pressure measuring port M is communicated with the left brake pressure oil port PB and the right brake pressure oil port PB through oil ducts in the valve body BL.
And the spare port FL is communicated with the connecting oil passages of the pressure oil inlet PIL, the first motor and the second motor control oil port IN.
The parking brake valve TF is arranged at the interface of the parking brake valve, and is connected with an oil duct of an oil outlet CR of a radiator and an oil return port T of an oil tank; the parking brake valve TF is also connected with oil ducts of a pressure oil inlet PIL, a first motor control oil port IN, a second motor control oil port IN and a left brake pressure oil port PB and a right brake pressure oil port PB.
The figure shows that the check valves DF are installed at the check valve joints, and the two check valves DF are respectively connected with oil passages of the radiator oil inlet C, the first pump housing oil drainage port CD1, the second pump housing oil drainage port CD2, the first motor housing oil drainage port CD3 and the second motor housing oil drainage port CD 4.
The figure shows that the valve body BL is provided with three mounting holes AK, which are through holes. The valve body BLT is fixedly mounted by a bolt through the mounting hole AK.
The working process of the utility model is as follows:
the shell oil return oil of the first motor, the second motor, the first pump and the second pump enters an oil duct inside the valve body BL through the pump shell oil drainage port CD1, the pump shell oil drainage port CD2, the motor shell oil drainage port CD3 and the motor shell oil drainage port CD4, and then enters the radiator through the radiator oil inlet C to dissipate heat.
The return oil of the radiator enters the oil duct inside the valve body BL through the radiator oil outlet CR, and then returns to the oil tank through the oil return port T of the oil receiving tank. The radiator oil inlet C and the radiator oil outlet CR are communicated through two check valves DF in an oil duct inside the valve body BL, when the radiator is blocked, the casing oil drainage of the pump and the motor can open the check valve DF to directly return to the oil channel oil tank, so that the timely drainage of the pump and the motor casing oil drainage is effectively protected, and the pump and the motor are protected.
The pressure oil inlet PIL is communicated with oil ducts of the first motor control oil port IN and the second motor control oil port IN IN the back pressure valve body BL, and pressure oil can be provided for the adjustment swing angle change of the motor and the pump at any time.
And the switch of the parking brake valve TF controls the on-off of the pressure oil inlet PIL and the left and right brake pressure oil ports PB in an oil duct inside the back pressure valve body BL.
The utility model discloses an embodiment as follows:
the length of the valve body BL is 250mm, the width is 60mm, and the height is 160 mm;
the diameter of an internal oil duct of the valve body BL is phi 12 mm;
the model of the one-way valve DF is DACV 16-20-0-N-60;
the model of the parking brake valve TF is DASV10-34-0-N-24 DR;
the diameter of the mounting hole AK is phi 11 mm.
Claims (2)
1. The utility model provides a motor casing backpressure valve of bull-dozer walking hydraulic system which characterized in that: it includes valve Body (BL), parking brake valve (TF), check valve (DF), there is pump casing draining port (CD 1) No. one on valve Body (BL), No. two pump casing draining ports (CD 2), motor casing draining port (CD 3) No. two motor casing draining ports (CD 4), pressure oil inlet (PIL), motor and No. two motor control hydraulic fluid ports (IN), control brake pressure hydraulic fluid Port (PB), pressure measurement port (M), advance radiator hydraulic fluid port (C), go out radiator hydraulic fluid port (CR), connect oil tank oil return opening (T), the check valve interface, parking brake valve (TF) is installed at parking brake valve interface, check valve (DF) is installed IN check valve interface department, pump casing draining port (CD 1), No. two pump casing draining port (CD 2), motor casing draining port (CD 3), motor casing draining port (CD 4) No. two, The parking brake system comprises a valve Body (BL), a radiator oil inlet (C), a radiator oil outlet (CR), an oil tank oil return port (T), a pressure oil inlet (PIL), a first motor, a second motor, a first motor control oil port (CR), a second motor control oil port (IN), a pressure measuring port (M), a left brake pressure oil Port (PB), a right brake pressure oil Port (PB), a parking brake valve (TF), an oil channel, a first pump shell oil drain port (CD 1), a second pump shell oil drain port (CD 2), a pressure oil inlet (PIL), a first motor, a second motor control oil port (IN), a left brake pressure oil Port (PB), a right brake pressure oil Port (PB), a left brake pressure oil port (CR), an oil channel, an oil tank oil return port (T), a parking brake valve (TF), a pressure oil inlet (PIL), a second motor control oil port (DF), a left brake pressure oil port (CD 1), a right brake pressure oil Port (PB), and an oil channel of a pump shell oil, The oil passages of the first motor shell oil drainage port (CD 3) and the second motor shell oil drainage port (CD 4) are connected.
2. The motor casing back pressure valve of a bulldozer walking hydraulic system according to claim 1, characterised in that: the hydraulic control valve is characterized IN that three mounting holes (AK) are formed IN the valve Body (BL), the three mounting holes (AK) are through holes, a standby port (FL) is further formed IN the valve Body (BL), and the standby port (FL) is communicated with connecting oil ducts of a pressure oil inlet (PIL), a first motor and a second motor control oil port (IN).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201646.4U CN209908882U (en) | 2019-02-15 | 2019-02-15 | Motor shell back pressure valve of bulldozer walking hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920201646.4U CN209908882U (en) | 2019-02-15 | 2019-02-15 | Motor shell back pressure valve of bulldozer walking hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908882U true CN209908882U (en) | 2020-01-07 |
Family
ID=69030379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920201646.4U Active CN209908882U (en) | 2019-02-15 | 2019-02-15 | Motor shell back pressure valve of bulldozer walking hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209908882U (en) |
-
2019
- 2019-02-15 CN CN201920201646.4U patent/CN209908882U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8522913B2 (en) | Transmission for a work machine with attached hydraulic fluid pump | |
| CN209908882U (en) | Motor shell back pressure valve of bulldozer walking hydraulic system | |
| CN202165350U (en) | Hydraulic system current collector with by-pass function | |
| CN201273312Y (en) | Special valve block for jib pump vehicle pumping integration | |
| CN218817964U (en) | Engineering machinery vehicle with hydraulic system with heat dissipation function | |
| CN203394606U (en) | Highly integrated engine oil cooling and filtering module | |
| CN210218310U (en) | Agricultural machine hydraulic pressure circulation system and tractor | |
| CN104350210B (en) | Work machine | |
| CN201874811U (en) | Gear pump with built-in check valve | |
| CN202370928U (en) | Low-pressure control and lubrication control valve block assembly for wheeled tractor | |
| US2581430A (en) | Fluid pressure control valve and associated parts | |
| CN210087467U (en) | Integrated engine cooling system | |
| CN201412417Y (en) | Return oil cooling mechanism of loader dual-pump combining hydraulic system | |
| CN206206296U (en) | A kind of integrated hydraulic power assembly | |
| CN216306360U (en) | Double-pump-station hydraulic system of coal mining machine suitable for large-inclination-angle fully-mechanized mining face | |
| CN103644332B (en) | A kind of revolution Foot braking valve | |
| CN217518968U (en) | Vehicle-mounted double-loop hydraulic power take-off system control valve block | |
| CN212804176U (en) | Tractor gearbox gear oil cooling system | |
| CN218377124U (en) | Hydraulic steering brake valve set of tracked vehicle | |
| CN215861051U (en) | Multifunctional and highly integrated valve | |
| CN100359187C (en) | Simple and convenient hydraulic integrated block | |
| CN210501481U (en) | Oil way structure of hot-melting butt welding machine | |
| CN2234520Y (en) | Hydraulic assemply by combining gear pump with hand change-over valve | |
| CN201907577U (en) | Electric oil cylinder hydraulic device of commercial vehicle cab tilting device | |
| CN210565421U (en) | Hydraulic element hydraulic control one-way valve body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200619 Address after: 075105 No. 21 Dongsheng Road, Xuanhua District, Hebei, Zhangjiakou Patentee after: Hebei Xuangong Machinery Development Co.,Ltd. Address before: 075105 No. 21 Dongsheng Road, Xuanhua District, Hebei, Zhangjiakou Patentee before: XUANHUA CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |