CN-224229209-U - Hydraulic system and vehicle

CN224229209UCN 224229209 UCN224229209 UCN 224229209UCN-224229209-U

Abstract

The utility model discloses a hydraulic system and a vehicle, wherein the hydraulic system comprises a reversing electromagnetic valve, a mechanical pump and a hydraulic system, wherein the reversing electromagnetic valve comprises an oil suction port, a first oil outlet and a second oil outlet, the mechanical pump comprises a first oil port and a second oil port, the first oil port is communicated with the second oil port, when the mechanical pump rotates positively, the oil suction port is communicated with the first oil outlet, the first oil outlet is communicated with the first oil port, oil flows to the second oil port through the first oil port, when the mechanical pump rotates reversely, the oil suction port is communicated with the second oil outlet, the second oil outlet is communicated with the second oil port, and oil flows to the first oil port through the second oil port. The hydraulic system is communicated with the mechanical pump by utilizing the reversing electromagnetic valve, so that the oil pump can suck oil into the cooling and lubricating system from the oil pool no matter the mechanical pump rotates positively or reversely, no extra oil source is needed to be introduced, and the cost waste is avoided.

Inventors

WANG XUEFENG
WAN KUIYUN
WEI YINGJUN
HE LIMING
YUAN XIN
LIU XIANHONG
HU XU

Assignees

重庆小康动力有限公司

Dates

Publication Date: 20260512
Application Date: 20250613

Claims (10)

1. A hydraulic system, comprising: The reversing electromagnetic valve comprises an oil suction port, a first oil outlet and a second oil outlet; The mechanical pump comprises a first oil port and a second oil port, and the first oil port and the second oil port are communicated with each other; Wherein: When the mechanical pump rotates positively, the oil suction port is communicated with the first oil outlet, the first oil outlet is communicated with the first oil port, and oil flows to the second oil port through the first oil port; When the mechanical pump rotates reversely, the oil suction port is communicated with the second oil outlet, the second oil outlet is communicated with the second oil port, and oil flows to the first oil port through the second oil port.
2. The hydraulic system of claim 1, wherein the hydraulic system is in communication with a clutch oil passage, and wherein oil flowing out of the second port during forward rotation of the mechanical pump and oil flowing out of the first port during reverse rotation of the mechanical pump both flow to the clutch oil passage.
3. The hydraulic system of claim 2, wherein a first check valve is disposed on a communication line between the first port and the clutch oil path.
4. The hydraulic system of claim 2, wherein a second check valve is provided on a communication line between the second port and the clutch oil path.
5. The hydraulic system of claim 2, wherein the hydraulic system is in communication with a cooling and lubrication system to supply oil to the cooling and lubrication system, wherein oil flowing out of the second port during forward rotation of the mechanical pump and oil flowing out of the first port during reverse rotation of the mechanical pump are both capable of flowing to the cooling and lubrication system.
6. The hydraulic system of claim 5, wherein the clutch oil circuit and the cooling lubrication system are disposed in parallel.
7. The hydraulic system of claim 6, wherein communication lines between the first and second oil ports and the cooling and lubrication system are provided with a control member for controlling the flow of oil to the cooling and lubrication system.
8. The hydraulic system of claim 7, wherein the control member is a relief valve.
9. The hydraulic system of claim 1, further comprising an oil suction filter having an inlet end in communication with the sump and an outlet end in communication with the oil suction port.
10. A vehicle comprising a hydraulic system according to any one of claims 1 to 9.

Description

Hydraulic system and vehicle Technical Field The utility model relates to the technical field of vehicles, in particular to a hydraulic system and a vehicle. Background At present, a double-motor mixing box with a clutch direct drive in the market basically comprises two oil pumps, wherein one mechanical pump is used as an oil supply source of a clutch high-pressure control system, the high-pressure oil source meets the requirement that redundant oil enters a cooling and lubricating system after the clutch is driven, and the other electronic pump is used as an oil supply source of the cooling and lubricating system. As described in chinese patent publication No. CN213479137U, the oil overflowed from the system of the electronic pump oil supply and clutch control high pressure system passes through the oil cooler and then redistributes to each cooling and lubrication component for cooling and lubrication. The power sources of the mechanical pump are basically an engine or a wheel end, and the mechanical pump is coupled with the wheel end, under the use condition that the forward oil supply of a vehicle is met, when the vehicle is reversed, the rotation direction of the mechanical pump is changed, the oil suction and discharge direction is changed, the oil pump cannot suck oil from an oil pool of the mixing tank into the cooling and lubricating hydraulic system of the mixing tank, and extra oil sources such as an electronic pump and the like are required to be introduced, so that cost waste is caused. Disclosure of utility model The utility model aims to provide a hydraulic system and a vehicle, so that oil can be supplied to a cooling and lubricating system when the vehicle advances or backs. In a first aspect, the present utility model provides a hydraulic system comprising: The reversing electromagnetic valve comprises an oil suction port, a first oil outlet and a second oil outlet; The mechanical pump comprises a first oil port and a second oil port, and the first oil port and the second oil port are communicated with each other; Wherein: When the mechanical pump rotates positively, the oil suction port is communicated with the first oil outlet, the first oil outlet is communicated with the first oil port, and oil flows to the second oil port through the first oil port; When the mechanical pump rotates reversely, the oil suction port is communicated with the second oil outlet, the second oil outlet is communicated with the second oil port, and oil flows to the first oil port through the second oil port. In the hydraulic system as described above, preferably, the hydraulic system is in communication with a clutch oil path, and the oil flowing out from the second oil port when the mechanical pump rotates forward and the oil flowing out from the first oil port when the mechanical pump rotates backward flow both flow to the clutch oil path. In the hydraulic system as described above, it is preferable that a first check valve is provided on a communication line between the first port and the clutch oil path. In the hydraulic system as described above, preferably, a second check valve is provided on a communication line between the second oil port and the clutch oil path. In the hydraulic system as described above, preferably, the hydraulic system is in communication with a cooling and lubrication system to supply oil to the cooling and lubrication system, and the oil flowing out of the second oil port when the mechanical pump rotates forward and the oil flowing out of the first oil port when the mechanical pump rotates backward may flow to the cooling and lubrication system. A hydraulic system as described above, wherein preferably said clutch and said cooling and lubrication system are arranged in parallel. In the hydraulic system, preferably, a control member is disposed on a communication pipeline between the first oil port and the second oil port and the cooling and lubricating system, and the control member is used for controlling oil to flow to the cooling and lubricating system. A hydraulic system as described above, wherein preferably the control member is a relief valve. The hydraulic system as described above, wherein preferably, the hydraulic system further comprises an oil suction filter, an inlet end of the oil suction filter is communicated with the oil sump, and an outlet end of the oil suction filter is communicated with the oil suction port. In a second aspect, the utility model provides a vehicle comprising a hydraulic system as described above. Compared with the prior art, the hydraulic system is communicated with the mechanical pump by utilizing the reversing electromagnetic valve, when the mechanical pump rotates positively, the oil suction port of the reversing electromagnetic valve is communicated with the first oil outlet, so that oil flows to the clutch oil way and the cooling and lubricating system after flowing to the second oil port through the first oil port of the mechanical pump,