Hydraulic control system of vehicle-mounted pipe winding and unwinding device

Abstract

A hydraulic control system of a vehicle-mounted pipe winding and unwinding device comprises a power supply unit, a reel hydraulic control unit and a controller, the power supply unit comprises an engine, a hydraulic oil tank and a plunger pump set, the hydraulic control system further comprises a gear pump driven by the engine, and the upstream end of the gear pump is connected with the hydraulic oil tank; the downstream end is connected with a flat cable hydraulic control unit through a one-way valve, and the flat cable hydraulic control unit comprises a hydraulic valve block, a proportional reversing valve, a flat cable bidirectional hydraulic motor and a first electromagnetic reversing valve; an oil return channel of the hydraulic valve block is connected with a hydraulic oil tank; the upstream end of the proportional reversing valve is connected with an oil inlet channel of the hydraulic valve block, the downstream end is connected with an oil return channel of the hydraulic valve block, and two working ends are respectively connected with oil ports on two sides of the flat cable bidirectional hydraulic motor; the upstream end of the first electromagnetic reversing valve is connected with an oil inlet channel of the hydraulic valve block, and the downstream end is connected with an oil return channel of the hydraulic valve block.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted retractable and deployable pipe devices, and in particular to a hydraulic control system of a vehicle-mounted retractable and deployable pipe device. Background Art

[0002] The vehicle-mounted pipe retracting and releasing device includes a reel device for winding the pipeline and a pipe discharging device for assisting the reel in retracting and releasing the pipe. Currently, an engine is often used as the power source of a plunger pump group, which drives the rotation of the reel bidirectional hydraulic motor and the operation of the vehicle-mounted reel device; WO2023045238A1 discloses a water hose reel system for a drainage rescue vehicle, a control method, and a drainage rescue vehicle. The water hose reel system for a drainage rescue vehicle can judge the working state of the water hose reel assembly by the pressure value to adjust the on / off and flow rate of the solenoid valve, and then adjust the speed of the bidirectional hydraulic motor to achieve automatic control of the water hose reeling; At present, the vehicle-mounted pipe-retracting device is usually also provided with a pipe-discharging device to assist the reel device in retracting the pipe, and the pipe-discharging device plays a role in synchronously and orderly retracting and releasing the pipe and guiding the vehicle-mounted pipe-retracting device. The reel system disclosed in WO2023045238A1 lacks a hydraulic control system for the pipe-discharging device, and cannot control the rotation direction and speed of the pipe-discharging device. Summary of the invention

[0003] The purpose of the present invention is to address the corresponding deficiencies of the prior art and provide a hydraulic control system for a vehicle-mounted tube retracting and releasing device, the system comprising a power supply unit, a reel hydraulic control unit, a cable arrangement hydraulic control unit and a controller; the power supply unit provides power and stores hydraulic oil for the hydraulic control system of the vehicle-mounted tube retracting and releasing device, the controller is connected to the second solenoid reversing valve of the reel hydraulic unit to control the rotation direction and speed of the reel bidirectional hydraulic motor, the controller is connected to the proportional reversing valve and the first solenoid reversing valve of the cable arrangement hydraulic control unit to control the rotation direction and speed of the cable arrangement bidirectional hydraulic motor; and the reel hydraulic control unit and the cable arrangement hydraulic control unit are both manufactured separately and connected to the power supply unit via quick-plug connectors, and the three units can be disassembled separately.

[0004] The objective of the present invention is achieved by adopting the following scheme: A hydraulic control system for a vehicle-mounted tube retracting and releasing device comprises a power supply unit, a reel hydraulic control unit, and a controller. The power supply unit comprises an engine, a hydraulic oil tank, and a plunger pump group. The upstream end of the plunger pump group is connected to the hydraulic oil tank, and the downstream end of the plunger pump group is connected to the reel hydraulic control unit. The engine drives the plunger pump group to provide hydraulic energy for the reel bidirectional hydraulic motor of the reel hydraulic control unit to drive the reel bidirectional hydraulic motor to work; it also comprises a gear pump driven by the engine, the upstream end of the gear pump is connected to the hydraulic oil tank, and the downstream end is connected to the cable hydraulic control unit through a one-way valve. The cable hydraulic control unit comprises a hydraulic valve block, a proportional reversing valve, a cable bidirectional hydraulic motor, and a first electromagnetic reversing valve; the oil inlet of the hydraulic valve block is connected to the one-way valve, and the oil return channel is connected to the hydraulic oil tank; the upstream end of the proportional reversing valve is connected to the oil inlet of the hydraulic valve block, and the downstream end is connected to the oil return channel of the hydraulic valve block, and the two working ends are respectively connected to the oil ports on both sides of the cable bidirectional hydraulic motor; the upstream end of the first electromagnetic reversing valve is connected to the oil inlet of the hydraulic valve block, and the downstream end is connected to the oil return channel of the hydraulic valve block; The first electromagnetic reversing valve and the proportional reversing valve are electrically connected to the controller.

[0005] The cable hydraulic control unit further includes a relief valve, wherein the upstream end of the relief valve is connected to the oil inlet passage, and the downstream end of the relief valve is connected to the oil return passage.

[0006] The two upstream ends of the reel bidirectional hydraulic motor are respectively connected to the two working ends of the second electromagnetic reversing valve, and the two connecting ends of the second electromagnetic reversing valve are respectively connected to the oil pressure port and the oil return port of the plunger pump group; the downstream end of the reel bidirectional hydraulic motor is connected to the hydraulic oil tank through the third oil circuit, and the reel unlocking device is connected to the feedback end of the plunger pump group through the fourth oil circuit; the second electromagnetic reversing valve is electrically connected to the controller.

[0007] The reel hydraulic control unit also includes a flushing valve, the two upstream ends of which are respectively connected to the connecting oil circuit between the second electromagnetic reversing valve and the plunger pump group, and the downstream end is connected to the third oil circuit to the hydraulic oil tank through a sequence valve.

[0008] The plunger pump group of the power supply unit is equipped with an oil replenishment pump and a plunger pump head driven by the engine; the upstream end of the oil replenishment pump is connected to the hydraulic oil tank, and the downstream end is the working end of the plunger pump group; the oil drain port at the plunger pump head is connected to the hydraulic oil tank through the second oil circuit, and the two downstream ends are the oil pressure port and oil return port of the plunger pump group.

[0009] The control oil port of the plunger pump group is provided with a three-way joint, one end of which is provided with a pressure measuring joint, and the other end is connected to the working end of the plunger pump group and the fourth oil circuit through an air filter. After the first oil circuit is connected to the fourth oil circuit, it is connected to the third oil circuit through a shut-off valve.

[0010] The plunger pump assembly is provided with a pressure sensor for measuring the oil pressure at two downstream ends of the plunger pump head, and the first oil circuit and the oil inlet passage are provided with pressure sensors.

[0011] The reel hydraulic control unit and the cable arrangement hydraulic control unit are both connected to the power supply unit via quick-connect connectors.

[0012] The hydraulic oil tank body is provided with an air filter for filtering in and out gases, and the tank body is provided with a level and temperature gauge for detecting the hydraulic oil level and temperature.

[0013] The oil outlet of the hydraulic oil tank is provided with an oil suction air filter, and the oil return port of the hydraulic oil tank is provided with an oil return air filter and a cooler. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, a hydraulic control system of a vehicle-mounted tube retracting and releasing device includes a power supply unit, a reel hydraulic control unit, and a controller. The power supply unit includes an engine 1, a hydraulic oil tank 2, and a plunger pump group 3. The upstream end of the plunger pump group 3 is connected to the hydraulic oil tank 2, and the downstream end of the plunger pump group 3 is connected to the reel hydraulic control unit. The engine 1 drives the plunger pump group 3 to provide hydraulic energy for the reel bidirectional hydraulic motor 4 of the reel hydraulic control unit, thereby driving the reel bidirectional hydraulic motor 4 to work; The two upstream ends of the reel bidirectional hydraulic motor 4 are respectively connected to the two working ends of the second electromagnetic reversing valve 20, and the two connecting ends of the second electromagnetic reversing valve 20 are respectively connected to the oil pressure port and the oil return port of the plunger pump group 3; the downstream end of the reel bidirectional hydraulic motor 4 is connected to the hydraulic oil tank 2 through the third oil circuit 21, and the reel unlocking device is connected to the feedback end of the plunger pump group 3 through the fourth oil circuit 22; the second electromagnetic reversing valve 20 is electrically connected to the controller; The reel hydraulic control unit further comprises a flushing valve 23, the two upstream ends of which are respectively connected to the connecting oil circuit between the second electromagnetic reversing valve 20 and the plunger pump group 3, and the downstream end is connected to the third oil circuit 21 to the hydraulic oil tank 2 through a sequence valve 24; The plunger pump group 3 of the power supply unit is provided with an oil replenishment pump 16 and a plunger pump head 17 driven by the engine 1; the upstream end of the oil replenishment pump 16 is connected to the hydraulic oil tank 2, and the downstream end is the working end of the plunger pump group 3; the oil drain port at the plunger pump head 17 is connected to the hydraulic oil tank 2 through the second oil circuit 19, and the two downstream ends are the oil pressure port and oil return port of the plunger pump group 3.

[0016] The control oil port of the plunger pump group 3 is provided with a three-way joint, one end of which is provided with a pressure measuring joint 15, and the other end is connected to the oil outlet of the replenishing pump 16 in the plunger pump group 3 and the fourth oil circuit 22 through an air filter 26. The first oil circuit 18 is connected to the fourth oil circuit 22 and then connected to the third oil circuit 21 through a stop valve.

[0017] The hydraulic oil tank 2 of the power supply unit is provided with an air filter 26 for filtering the inlet and outlet gas, and a level and temperature gauge 27 for detecting the hydraulic oil level and temperature is provided in the tank; It also includes a gear pump 5 driven by the engine 1, the upstream end of the gear pump 5 is connected to the hydraulic oil tank 2, and the downstream end is connected to the cable hydraulic control unit through a one-way valve 6; The hydraulic control unit for the cable arrangement includes a hydraulic valve block 7, a proportional reversing valve 8, a bidirectional hydraulic motor for the cable arrangement 9, and a first electromagnetic reversing valve 10; the oil inlet passage 11 of the hydraulic valve block 7 is connected to the one-way valve 6, and the oil return passage 12 is connected to the hydraulic oil tank 2; the upstream end of the proportional reversing valve 8 is connected to the oil inlet passage 11 of the hydraulic valve block 7, the downstream end is connected to the oil return passage 12 of the hydraulic valve block 7, and the two working ends are respectively connected to the oil ports on both sides of the bidirectional hydraulic motor 9; the upstream end of the first electromagnetic reversing valve 10 is connected to the oil inlet passage 11 of the hydraulic valve block 7 11, the downstream end is connected to the oil return passage 12 of the hydraulic valve block 7, and the first electromagnetic reversing valve 10 is used to adjust the oil pressure in the hydraulic valve block 7; the first electromagnetic reversing valve 10 and the proportional reversing valve 8 are electrically connected to the controller to control the rotation direction and running speed of the reel bidirectional hydraulic motor 4; the cable hydraulic control unit also includes a relief valve 13, the upstream end of the relief valve 13 is connected to the oil inlet passage 11, and the downstream end is connected to the oil return passage 12, and the relief valve 13 is used to assist the first electromagnetic reversing valve 10 in adjusting the oil pressure in the hydraulic valve block 7; The plunger pump group 3 is provided with a pressure sensor 25 for measuring the oil pressure at the two downstream ends of the plunger pump head 17. The first oil circuit 18 and the oil inlet channel 11 are both provided with a pressure sensor 25. The pressure sensors 25 are both connected to the controller for detecting the oil pressure in the oil circuit. The reel hydraulic control unit and the cable arrangement hydraulic control unit are connected to the power supply unit via a quick-plug connector 14. The reel hydraulic control unit, the cable arrangement hydraulic control unit and the power supply unit are independently arranged and connected to each other via quick-plug connectors, so they can be quickly disassembled and assembled, and the quick-plug connectors can also be plugged into other devices. The oil outlet of the hydraulic oil tank 2 is provided with an oil suction air filter 28, and the upstream ends of the gear pump 5 and the oil replenishment pump 16 are connected to the oil outlet of the hydraulic oil tank 2. The hydraulic oil passes through the oil suction air filter 28 and also passes through the stop valve; the oil return port of the hydraulic oil tank 2 is provided with an oil return air filter 29 and a cooler 30. The oil return channel 12 connects the oil circuit of the hydraulic oil tank 2 with the third oil circuit 21, and then passes through the oil return air filter 29 and the cooler 30 for reducing the temperature of the hydraulic oil to be connected to the oil return port of the hydraulic oil tank 2.

[0018] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification made to the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A hydraulic control system for a vehicle-mounted tube retracting and releasing device, comprising a power supply unit, a reel hydraulic control unit, and a controller, wherein the power supply unit comprises an engine (1), a hydraulic oil tank (2), and a plunger pump group (3), wherein the upstream end of the plunger pump group (3) is connected to the hydraulic oil tank (2), and the downstream end of the plunger pump group (3) is connected to the reel hydraulic control unit, and the engine (1) drives the plunger pump group (3) to provide hydraulic energy to a reel bidirectional hydraulic motor (4) of the reel hydraulic control unit, thereby driving the reel bidirectional hydraulic motor (4) to work; Features: It also comprises a gear pump (5) driven by an engine (1), the upstream end of the gear pump (5) being connected to a hydraulic oil tank (2), and the downstream end being connected to a cable hydraulic control unit via a one-way valve (6), the cable hydraulic control unit comprising a hydraulic valve block (7), a proportional reversing valve (8), a cable bidirectional hydraulic motor (9), and a first electromagnetic reversing valve (10); the oil inlet passage (11) of the hydraulic valve block (7) being connected to the one-way valve (6), and the oil return passage (12) being connected to the hydraulic oil tank (2); the upstream end of the proportional reversing valve (8) being connected to the oil inlet passage (11) of the hydraulic valve block (7), the downstream end being connected to the oil return passage (12) of the hydraulic valve block (7), and the two working ends being respectively connected to the oil ports on both sides of the cable bidirectional hydraulic motor (9); the upstream end of the first electromagnetic reversing valve (10) being connected to the oil inlet passage (11) of the hydraulic valve block (7), and the downstream end being connected to the oil return passage (12) of the hydraulic valve block (7); The first electromagnetic reversing valve (10) and the proportional reversing valve (8) are electrically connected to the controller.

2. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 1, characterized in that: The cable arrangement hydraulic control unit further comprises a relief valve (13), wherein the upstream end of the relief valve (13) is connected to the oil inlet passage (11), and the downstream end of the relief valve (13) is connected to the oil return passage (12).

3. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 1, characterized in that: The two upstream ends of the reel bidirectional hydraulic motor (4) are respectively connected to the two working ends of the second electromagnetic reversing valve (20), and the two connecting ends of the second electromagnetic reversing valve (20) are respectively connected to the oil pressure port and the oil return port of the plunger pump group (3); the downstream end of the reel bidirectional hydraulic motor (4) is connected to the hydraulic oil tank (2) via a third oil circuit (21), and the reel unlocking device is connected to the feedback end of the plunger pump group (3) via a fourth oil circuit (22); and the second electromagnetic reversing valve (20) is electrically connected to the controller.

4. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 3, characterized in that: The reel hydraulic control unit further comprises a flushing valve (23), the two upstream ends of the flushing valve being respectively connected to the connecting oil circuit between the second electromagnetic reversing valve (20) and the plunger pump group (3), and the downstream end being connected to the third oil circuit (21) to the hydraulic oil tank (2) via a sequence valve (24).

5. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 4, characterized in that: The plunger pump group (3) of the power supply unit is provided with an oil replenishment pump (16) and a plunger pump head (17) driven by an engine (1); the upstream end of the oil replenishment pump (16) is connected to the hydraulic oil tank (2), and the downstream end is the working end of the plunger pump group (3); the oil drain port at the plunger pump head (17) is connected to the hydraulic oil tank (2) through a second oil path (19), and the two downstream ends are the oil pressure port and the oil return port of the plunger pump group (3).

6. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 5, characterized in that: The control oil port of the plunger pump group (3) is provided with a three-way joint, one end of which is provided with a pressure measuring joint (15), and the other end is connected to the working end of the plunger pump group (3) and the fourth oil circuit (22) through an air filter (26); the first oil circuit (18) is connected to the fourth oil circuit (22) and then connected to the third oil circuit (21) through a stop valve.

7. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 6, characterized in that: The plunger pump assembly (3) is provided with a pressure sensor (25) for measuring the oil pressure at two downstream ends of the plunger pump head (17), and the first oil circuit (18) and the oil inlet channel (11) are provided with a pressure sensor (25).

8. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 1, characterized in that: The reel hydraulic control unit and the cable arrangement hydraulic control unit are both connected to the power supply unit via a quick-connect connector (14).

9. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 1, characterized in that: The hydraulic oil tank (2) is provided with an air filter (26) for filtering inlet and outlet gases on the tank body, and a level and temperature gauge (27) for detecting the level and temperature of the hydraulic oil is provided inside the tank body.

10. The hydraulic control system of the vehicle-mounted tube retracting and releasing device according to claim 1, characterized in that: An oil suction air filter (28) is provided at the oil outlet of the hydraulic oil tank (2), and an oil return air filter (29) and a cooler (30) are provided at the oil return port of the hydraulic oil tank (2).

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