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] This invention relates to the field of vehicle-mounted hose retraction devices, and more specifically to a hydraulic control system for vehicle-mounted hose retraction devices. Background Technology

[0002] The vehicle-mounted reel device includes a reel device for winding the pipeline and a pipe routing device for assisting the reel in winding and unwinding the pipeline. Currently, an engine is often used as the power source for the plunger pump group, which drives the rotation of the reel's bidirectional hydraulic motor and the operation of the vehicle-mounted reel device.

[0003] WO2023045238A1 discloses a water hose reel system, control method, and water hose reel vehicle for drainage and emergency rescue. The water hose reel system of the drainage and emergency rescue vehicle can determine the working status of the water hose reel assembly by the pressure value to adjust the on / off state and flow rate of the solenoid valve, thereby adjusting the speed of the bidirectional hydraulic motor and realizing automatic control of water hose winding.

[0004] Currently, vehicle-mounted hose reel systems typically include a hose routing device to assist the reel system in reeling and unloading the hose. This hose routing device plays a role in synchronizing and guiding the hose reeling and unloading process. The reel system disclosed in WO2023045238A1 lacks a hydraulic control system for the hose routing device, making it impossible to control the rotation direction and speed of the hose routing device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a hydraulic control system for a vehicle-mounted hose reel device. This system includes a power supply unit, a reel hydraulic control unit, a cable laying 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 hose reel device. The controller is connected to the second solenoid directional valve of the reel hydraulic unit to control the rotation direction and speed of the reel's bidirectional hydraulic motor. The controller is also connected to the proportional directional valve and the first solenoid directional valve of the cable laying hydraulic control unit to control the rotation direction and speed of the cable laying bidirectional hydraulic motor. Furthermore, the reel hydraulic control unit and the cable laying hydraulic control unit are manufactured separately and connected to the power supply unit via quick-connect couplings; all three units can be disassembled individually.

[0006] The objective of this invention is achieved through the following approach:

[0007] A hydraulic control system for a vehicle-mounted cable reel and extender includes a power supply unit, a reel hydraulic control unit, and a controller. The power supply unit includes an engine, a hydraulic tank, and a plunger pump assembly. The upstream end of the plunger pump assembly is connected to the hydraulic tank, and the downstream end is connected to the reel hydraulic control unit. The engine drives the plunger pump assembly to provide hydraulic energy to the reel's bidirectional hydraulic motor of the reel hydraulic control unit, driving the reel's bidirectional hydraulic motor to operate. The system also includes a gear pump driven by the engine. The upstream end of the gear pump is connected to the hydraulic tank, and the downstream end is connected to the cable laying hydraulic control unit via a check valve. The cable laying hydraulic control unit includes a hydraulic valve block, a proportional directional valve, a cable laying bidirectional hydraulic motor, and a first solenoid directional valve. The inlet of the hydraulic valve block is connected to the check valve, and the return passage is connected to the hydraulic tank. The upstream end of the proportional directional valve is connected to the inlet of the hydraulic valve block, and the downstream end is connected to the return passage of the hydraulic valve block. Both working ends are connected to the two oil ports of the cable laying bidirectional hydraulic motor. The upstream end of the first solenoid directional valve is connected to the inlet of the hydraulic valve block, and the downstream end is connected to the return passage of the hydraulic valve block.

[0008] The first electromagnetic directional valve and the proportional directional valve are electrically connected to the controller.

[0009] The hydraulic control unit for the cable routing also includes an overflow valve, with its upstream end connected to the oil inlet and its downstream end connected to the oil return.

[0010] The two upstream ends of the reel bidirectional hydraulic motor are respectively connected to the two working ends of the second electromagnetic directional valve, and the two connecting ends of the second electromagnetic directional valve are respectively connected to the oil pressure port and 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 directional valve is electrically connected to the controller.

[0011] The hydraulic control unit of the reel also includes a flushing valve. The two upstream ends of the flushing valve are respectively connected to the connecting oil line between the second solenoid directional valve and the plunger pump group, and the downstream end is connected to the third oil line to the hydraulic oil tank through a sequence valve.

[0012] The power supply unit's plunger pump assembly is equipped with an engine-driven make-up pump and a plunger pump head; the upstream end of the make-up pump is connected to the hydraulic oil tank, and the downstream end is the working end of the plunger pump assembly; the drain port at the plunger pump head is connected to the hydraulic oil tank through a second oil circuit, and the two downstream ends are the pressure port and return port of the plunger pump assembly.

[0013] The control port of the plunger pump assembly is equipped with a three-way connector. One end is equipped with a pressure test connector, and the other end is connected to the working end of the plunger pump assembly 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.

[0014] The plunger pump assembly is equipped with pressure sensors for measuring the oil pressure at the two downstream ends of the plunger pump head, and pressure sensors are also provided on the first oil passage and the oil inlet passage.

[0015] The hydraulic control unit for the reel and the hydraulic control unit for the cable laying are both connected to the power supply unit via quick-connect couplings.

[0016] The hydraulic oil tank is equipped with an air filter for filtering incoming and outgoing gases, and a level and temperature gauge for detecting the hydraulic oil level and temperature is installed inside the tank.

[0017] The hydraulic oil tank is equipped with an oil suction air filter at the oil outlet and an oil return air filter and cooler at the oil return port. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0019] like Figure 1 As shown, a hydraulic control system for a vehicle-mounted hose reel 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 assembly 3. The upstream end of the plunger pump assembly 3 is connected to the hydraulic oil tank 2, and the downstream end of the plunger pump assembly 3 is connected to the reel hydraulic control unit. The engine 1 drives the plunger pump assembly 3 to provide hydraulic energy to the reel bidirectional hydraulic motor 4 of the reel hydraulic control unit, thereby driving the reel bidirectional hydraulic motor 4 to work.

[0020] The two upstream ends of the reel bidirectional hydraulic motor 4 are respectively connected to the two working ends of the second electromagnetic directional valve 20, and the two connecting ends of the second electromagnetic directional 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 directional valve 20 is electrically connected to the controller.

[0021] The hydraulic control unit of the reel also includes a flushing valve 23. The two upstream ends of the flushing valve are respectively connected to the connecting oil line between the second electromagnetic directional valve 20 and the plunger pump group 3, and the downstream end is connected to the third oil line 21 to the hydraulic oil tank 2 through the sequence valve 24.

[0022] The plunger pump assembly 3 of the power supply unit is equipped with a replenishing pump 16 driven by the engine 1 and a plunger pump head 17; the upstream end of the replenishing pump 16 is connected to the hydraulic oil tank 2, and the downstream end is the working end of the plunger pump assembly 3; the drain port at the plunger pump head 17 is connected to the hydraulic oil tank 2 through the second oil passage 19, and the two downstream ends are the pressure port and return port of the plunger pump assembly 3.

[0023] The control port of the plunger pump assembly 3 is equipped with a three-way connector. One end is equipped with a pressure test connector 15, and the other end is connected to the oil outlet of the replenishment pump 16 in the plunger pump assembly 3 and the fourth oil passage 22 through an air filter 26. After the first oil passage 18 is connected to the fourth oil passage 22, it is connected to the third oil passage 21 through a shut-off valve.

[0024] The hydraulic oil tank 2 of the power supply unit is equipped with an air filter 26 for filtering the incoming and outgoing gas, and a level and temperature gauge 27 for detecting the hydraulic oil level and temperature is installed inside the tank.

[0025] It also includes a gear pump 5 driven by engine 1, the upstream end of which is connected to hydraulic oil tank 2, and the downstream end is connected to the cable hydraulic control unit through a one-way valve 6.

[0026] The cable routing hydraulic control unit includes a hydraulic valve block 7, a proportional directional valve 8, a cable routing bidirectional hydraulic motor 9, and a first solenoid directional valve 10. The inlet 11 of the hydraulic valve block 7 is connected to the check valve 6, and the return 12 is connected to the hydraulic oil tank 2. The upstream end of the proportional directional valve 8 is connected to the inlet 11 of the hydraulic valve block 7, and the downstream end is connected to the return 12 of the hydraulic valve block 7. Its two working ends are respectively connected to the two oil ports on either side of the cable routing bidirectional hydraulic motor 9. The upstream end of the first solenoid directional valve 10 is connected to the inlet 10 of the hydraulic valve block 7. 11. The downstream end is connected to the return oil passage 12 of the hydraulic valve block 7. The first solenoid directional valve 10 is used to regulate the oil pressure in the hydraulic valve block 7. The first solenoid directional valve 10 and the proportional directional 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 laying hydraulic control unit also includes an overflow valve 13. The upstream end of the overflow valve 13 is connected to the oil inlet passage 11, and the downstream end is connected to the return oil passage 12. The overflow valve 13 is used to assist the first solenoid directional valve 10 in regulating the oil pressure in the hydraulic valve block 7.

[0027] The plunger pump assembly 3 is equipped with pressure sensors 25 for measuring the oil pressure at the two downstream ends of the plunger pump head 17. Pressure sensors 25 are also provided on the first oil passage 18 and the oil inlet passage 11. The pressure sensors 25 are all connected to the controller and are used to detect the oil pressure in the oil passage.

[0028] The reel hydraulic control unit and the cable hydraulic control unit are both connected to the power supply unit via quick-connect connector 14. The reel hydraulic control unit, the cable hydraulic control unit, and the power supply unit are independently set up and interconnected via quick-connect connectors, which can be quickly disassembled and assembled. The quick-connect connectors can also be plugged into other equipment.

[0029] The hydraulic oil tank 2 has an oil suction air filter 28 at its outlet. The upstream ends of the gear pump 5 and the replenishing pump 16 are both connected to the oil outlet of the hydraulic oil tank 2. After passing through the oil suction air filter 28, the hydraulic oil also passes through a shut-off valve. The hydraulic oil tank 2 has a return oil air filter 29 and a cooler 30 at its return oil outlet. The return oil passage 12 connects the oil circuit of the hydraulic oil tank 2 to the third oil circuit 21 and then passes through the return oil air filter 29 and the cooler 30 to reduce the hydraulic oil temperature before connecting to the return oil outlet of the hydraulic oil tank 2.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications 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 reel and extender device, comprising a power supply unit, a reel hydraulic control unit, and a controller. The power supply unit comprises an engine (1), a hydraulic tank (2), and a plunger pump assembly (3). The upstream end of the plunger pump assembly (3) is connected to the hydraulic tank (2), and the downstream end of the plunger pump assembly (3) is connected to the reel hydraulic control unit. The engine (1) drives the plunger pump assembly (3) to provide hydraulic energy to the reel bidirectional hydraulic motor (4) of the reel hydraulic control unit, thereby driving the reel bidirectional hydraulic motor (4) to work. Its features are: It also includes a gear pump (5) driven by an engine (1), the upstream end of which is connected to a hydraulic oil tank (2), and the downstream end is connected to a cable hydraulic control unit via a check valve (6). The cable hydraulic control unit includes a hydraulic valve block (7), a proportional directional valve (8), a cable bidirectional hydraulic motor (9), and a first electromagnetic directional valve (10). The oil inlet (11) of the hydraulic valve block (7) is connected to the check valve (6), and the oil return (12) is connected to the hydraulic oil tank (2). The upstream end of the proportional directional valve (8) is connected to the oil inlet (11) of the hydraulic valve block (7), and the downstream end is connected to the oil return (12) of the hydraulic valve block (7). The two working ends are respectively connected to the oil ports on both sides of the cable bidirectional hydraulic motor (9). The upstream end of the first electromagnetic directional valve (10) is connected to the oil inlet (11) of the hydraulic valve block (7), and the downstream end is connected to the oil return (12) of the hydraulic valve block (7). The first electromagnetic directional valve (10) and the proportional directional valve (8) are electrically connected to the controller.

2. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 1, characterized in that: The hydraulic control unit for the cable also includes an overflow valve (13), the upstream end of which is connected to the oil inlet channel (11), and the downstream end of which is connected to the oil return channel (12).

3. The hydraulic control system of the vehicle-mounted hose retraction device as described in 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 directional valve (20), and the two connecting ends of the second electromagnetic directional 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 directional valve (20) is electrically connected to the controller.

4. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 3, characterized in that: The hydraulic control unit of the reel also includes a flushing valve (23). The two upstream ends of the flushing valve are respectively connected to the connecting oil line between the second electromagnetic directional valve (20) and the plunger pump group (3), and the downstream end is connected to the third oil line (21) to the hydraulic oil tank (2) through the sequence valve (24).

5. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 4, characterized in that: The piston pump assembly (3) of the power supply unit is equipped with a supplementary oil pump (16) driven by the engine (1) and a piston pump head (17); the upstream end of the supplementary oil pump (16) is connected to the hydraulic oil tank (2), and the downstream end is the working end of the piston pump assembly (3); the drain port at the piston pump head (17) is connected to the hydraulic oil tank (2) through the second oil circuit (19), and the two downstream ends are the pressure port and return port of the piston pump assembly (3).

6. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 5, characterized in that: The control port of the plunger pump assembly (3) is equipped with a three-way connector. One end is equipped with a pressure test connector (15), and the other end is connected to the working end of the plunger pump assembly (3) and the fourth oil circuit (22) through an air filter (26). After the first oil circuit (18) is connected to the fourth oil circuit (22), it is connected to the third oil circuit (21) through a shut-off valve.

7. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 6, characterized in that: The plunger pump assembly (3) is equipped with pressure sensors (25) for measuring the oil pressure at the two downstream ends of the plunger pump head (17), and pressure sensors (25) are provided on the first oil passage (18) and the oil inlet passage (11).

8. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 1, characterized in that: The reel hydraulic control unit and the cable hydraulic control unit are both connected to the power supply unit via quick-connect connectors (14).

9. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 1, characterized in that: The hydraulic oil tank (2) is equipped with an air filter (26) for filtering incoming and outgoing gas, and a level and temperature gauge (27) for detecting hydraulic oil level and temperature is installed inside the tank.

10. The hydraulic control system of the vehicle-mounted hose retraction device as described in claim 1, characterized in that: The hydraulic oil tank (2) is equipped with an oil suction air filter (28) at the oil outlet and an oil return air filter (29) and a cooler (30) at the oil return port.

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