Multi-winch linkage system

Abstract

A multi-winch linkage system comprises a variable pump station, an oil tank, a signal amplifier, more than two winches and more than two winch control boards, the input end of the variable pump station is connected with the output end of the oil tank, the output end of the variable pump station is connected with the input end of the signal amplifier, and the output end of the variable pump station is connected with oil inlets of the winch control boards. Oil outlets of the multiple winch control boards are connected with an input port of the oil tank, the winches are connected with the winch control boards in a one-to-one mode, the winch control boards are connected with LS feedback oil ways, LX feedback oil ways and LY feedback oil ways, the LS feedback oil ways and the LX feedback oil ways of the adjacent winch control boards are connected, and the LY feedback oil ways of all the winch control boards are connected together. When the load of a certain winch is larger than that of other winches, the reversing valves connected with the other winches are pushed, the load of the winch is increased, hydraulic oil can be accurately conveyed to the winch and cannot flow into the winch with the large load, and accurate control over the multiple winches is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of oil supply of hydraulic pump stations, and in particular to a multi-winch linkage system. Background Art

[0002] A hydraulic winch is a device that uses a hydraulic system to provide power. Its working principle is to convert pressure into mechanical energy through a hydraulic oil circuit, thereby driving the winch to rotate. When multiple hydraulic winches need to work at the same time, the oil circuits can be connected to achieve the coordinated work of multiple winches, improve work efficiency and rescue capabilities, and use the flow and pressure transmission of hydraulic oil to achieve centralized control and management of multiple winches. In practical applications, the technology of connecting multiple hydraulic winches to oil circuits is widely used in vehicle rescue, engineering construction, outdoor adventures and other fields, especially in situations where a large amount of traction is required or multiple winches need to work together. The application of this technology is particularly important. Summary of the invention

[0003] The problem to be solved by the present invention is the linkage control problem between multiple winches.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a multi-winch linkage system, including a variable pump station, an oil tank, a signal amplifier, two or more winches and two or more winch control consoles, the input end of the variable pump station is connected to the output end of the oil tank, the output end of the variable pump station is connected to the input end of the signal amplifier, the output end of the variable pump station is connected to the oil inlet of multiple winch control consoles, the oil outlets of multiple winch control consoles are connected to the input port of the oil tank, the winches are connected one-to-one with the winch control consoles, the winch control consoles are provided with a reversing valve, a pressure balancing valve and a shuttle valve, one side of the reversing valve is connected to the output end of the variable pump station, the input end of the oil tank and the output end of the pressure compensation valve, and the other side is connected to the input end of the pressure compensation valve and the winch, and the shuttle valve is connected to the pressure compensation valve.

[0005] The capstan control panel is connected with a feedback oil circuit, which includes an LS feedback oil circuit, an LX feedback oil circuit and a LY feedback oil circuit. The LS feedback oil circuit of adjacent capstan control panels is connected to the LX feedback oil circuit, and the LY feedback oil circuits of all capstan control panels are connected together. The LY feedback oil circuit is connected to the spring chamber of the pressure compensation valve, and the LS feedback oil circuit and the LX feedback oil circuit are connected to the shuttle valve.

[0006] The scheme connects the oil inlets of multiple winch control panels to the output end of the variable pump station, the oil return ports of multiple winch control panels to the input end of the oil tank, and multiple winches are connected to the winch control panels one by one. The hydraulic oil is transported to the winch control panel through the variable pump station, and the hydraulic oil flowing through the winch control panel is transported to the connected winch by controlling the reversing valve in the winch control panel, and then returns to the oil tank; each winch control panel is connected to an LS feedback oil circuit and an LX feedback oil circuit through a shuttle valve, and the LS feedback oil circuit and the LX feedback oil circuit between adjacent winch control panels are connected, so that the control signal oil of any winch control panel can be fed back to the control end of the signal amplifier through the LS feedback oil circuit, thereby shortening the execution time of the winch; the pressure of the spring chamber of each pressure compensation valve is made consistent through the LY feedback oil circuits connected in parallel, so that the amount of hydraulic oil flowing to the winch connected to the winch control panel is determined by the degree of opening of the reversing valve, thereby realizing linkage control between multiple winches. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the overall hydraulic system of an embodiment of the present invention; Figure 2 This is a schematic diagram of the hydraulic system of the head winch console in an embodiment of the present invention; Figure 3 Schematic diagram of a reversing valve in an embodiment of the present invention; Figure 4 This is a schematic diagram of the hydraulic system of the tail winch console in an embodiment of the present invention; Figure 5 Schematic diagram of the winch hydraulic system in an embodiment of the present invention. DETAILED DESCRIPTION

[0008] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0009] like Figure 1 to Figure 2As shown, a multi-winch linkage system includes a variable pump station 1, an oil tank 2, a signal amplifier 3, two or more winches 4 and two or more winch control consoles 5. In this embodiment, there are two winch control consoles 5 and winches 4. The number of winch control consoles 5 and winches 4 can be increased according to the usage scenario, and the number of variable pump stations 1 can also be increased; in this embodiment, there is one variable pump station 1, the input end of the variable pump station 1 is connected to the output end of the oil tank 2, the output end of the variable pump station 1 is connected to the input end of the signal amplifier 3, and the variable pump station The output end of 1 is connected to the oil inlet of multiple winch control panels 5, the oil outlets of multiple winch control panels 5 are connected to the input port of the oil tank 2, the winch 4 is connected one-to-one with the winch control panel 5, and it is characterized in that: the winch control panel 5 is provided with a reversing valve 51, a pressure compensating valve 52 and a shuttle valve 53, one side of the reversing valve 51 is connected to the output end of the variable pump station 1, the input end of the oil tank 2 and the output end of the pressure compensating valve 52, and the other side is connected to the input end of the pressure compensating valve 52 and the winch 4, and the shuttle valve 53 is connected to the pressure compensating valve 52.

[0010] The winch control panel 5 is connected to a feedback oil circuit, which includes an LS feedback oil circuit, an LX feedback oil circuit and a LY feedback oil circuit. The LS feedback oil circuits of adjacent winch control panels 5 are connected to the LX feedback oil circuit, and the LY feedback oil circuits of all winch control panels 5 are connected together. The LY feedback oil circuit is connected to the spring chamber of the pressure compensation valve 52, and the LS feedback oil circuit and the LX feedback oil circuit are connected to the shuttle valve 53; the winch control panel 5 includes a head winch control panel 6, a middle winch control panel 7 and a tail winch control panel 8, and the head winch control panel 6, the middle winch control panel 7 and the tail winch control panel 8 are all connected to the winch 4.

[0011] like Figures 2 to 3 As shown, multiple winch control consoles 5 are connected to the output end of the variable pump station 1, and hydraulic oil is pumped into the multiple winch control consoles 5 through the variable pump station 1. The user manually pushes the reversing valve 51 in the winch control console 5 connected to the winch 4 to be controlled. In this embodiment, the reversing valve 51 is a three-position six-way manual reversing valve 51. When the reversing valve 51 moves in one direction, the hydraulic oil output by the variable pump station 1 flows into the reversing valve 51 through the P port, and the hydraulic oil flows from the C port of the reversing valve 51 to the pressure compensation valve 52. After passing through the pressure compensation valve 52, part of the hydraulic oil flows from the D port of the reversing valve 51 to the A port of the reversing valve 51, and then flows into the winch 4 through the B2 port, and then flows to the B port through the A2 port, and then flows out through the E port of the reversing valve 51 to the oil return port T and flows back to the oil tank 2, so that the winch 4 can move in one direction.

[0012] When the reversing valve 51 moves in the other direction, the hydraulic oil output by the variable pump station 1 flows into the reversing valve through the P port, and the hydraulic oil flows from the G port of the reversing valve 51 to the pressure compensation valve 52. After passing through the pressure compensation valve 52, part of the hydraulic oil flows from the F port of the reversing valve 51 to the B port of the reversing valve 51, and then flows into the capstan 4 through the A2 port, and then flows to the A port through the B2 port, and then flows out through the I port of the reversing valve 51 to the oil return port T and flows back to the oil tank 2, so that the capstan 4 can move in the other direction.

[0013] In the above process, when the hydraulic oil flows to the reversing valve 51 through the pressure compensation valve 52, part of the hydraulic oil flows to the shuttle valve 53 and then flows into the LS feedback oil circuit. Since the LS feedback oil circuits on all the winch control panels 5 are connected together, no matter which winch control panel 5's reversing valve is pushed, the signal oil will be transported to the LS feedback oil circuit of the head winch control panel 6 through the LS feedback oil circuit, and then flow to the control end of the signal amplifier 3, so that the signal amplifier 3 is turned on, and then the signal oil is input to the feedback end of the variable pump station 1 through the signal amplifier 3 to generate a load signal, and the variable pump station 1 increases the output of the hydraulic oil; another part of the hydraulic oil flows into the LY feedback oil circuit. Since the LY feedback oil circuits are all connected in parallel, the signal oil is input into the spring chamber of the pressure compensation valve 52 through the LY feedback oil circuit, so that the pressure of the spring chamber of each pressure compensation valve is consistent, so that the hydraulic oil flows evenly to each winch control panel 5, and the amount of hydraulic oil flowing to the winch 4 is controlled by the opening size of the reversing valve 51.

[0014] like Figure 2 and Figure 4 As shown, in this embodiment, in the head winch control panel 6, the LS feedback oil circuit is connected to the pressure compensating valve 52, and in the middle winch control panel 7 and the tail winch control panel 8, a plug 10 is provided between the LS feedback oil circuit and the pressure compensating valve 52, so that when the signal oil in the LS feedback oil circuit of the head winch control panel 6 flows to the LS feedback oil circuit of the middle winch control panel 7 and the tail winch control panel 8, it will not flow to the pressure compensating valve 52, and there is no plug 10 between the LS feedback oil circuit of the head winch control panel 6 and the spring chamber of the pressure compensating valve 52, the LS feedback oil circuit and the spring chamber of the pressure compensating valve 52 are connected, and part of the hydraulic oil flows to the LY feedback oil circuit through the spring chamber of the pressure compensating valve 52, that is, the signal oil in the LY feedback oil circuit can only flow out from the LY feedback oil circuit in the head winch control panel 6, and then flow to the spring chambers of the pressure compensating valves 52 in other winch control panels 5, so that the pressures of the spring chambers of all pressure compensating valves 52 are consistent.

[0015] like Figure 2As shown, in this embodiment, a second signal amplifier 61 is further provided in the head winch control panel 6, the input end of the second signal amplifier 61 is connected to the variable pump station 1, the pressure compensation valve 52 is connected to the control end of the second signal amplifier 61 through the LY feedback oil circuit, and the output end of the second signal amplifier 61 is connected to the LY feedback oil circuit; when the LY feedback oil circuit in the head winch control panel obtains the signal oil from the LS feedback oil circuit and transmits the signal oil to the LY feedback oil circuit in other winch control panels 5, it will flow through the second signal amplifier 61. At this time, the second signal amplifier 61 is turned on, and then the second signal amplifier 61 takes oil from the oil tank 2 through the Pp port, and the hydraulic oil flow in the LY feedback oil circuit increases, so that the pressure on both sides of the pressure compensation valve 52 between each winch control panel 5 remains uniform, and the response time is faster.

[0016] like Figure 4 As shown, in this embodiment, a first pressure reducing valve 85 and a fourth shuttle valve 86 are also provided in the tail winch control console 8, the input end of the first pressure reducing valve 85 is connected to the output end of the variable pump station 1, the output end of the first pressure reducing valve 85 is connected to the fourth shuttle valve 86, and the fourth shuttle valve 86 is connected to the LS feedback oil circuit.

[0017] like Figure 5 As shown, in this embodiment, the winch 4 is provided with a bidirectional hydraulic motor 41, which is connected to the input end of the reversing valve 51 in the winch control panel and the output end of the reversing valve 51. At the same time, the bidirectional hydraulic motor 41 is connected to the input end of the oil tank 2, and a fifth shuttle valve 42, a first check valve 43, a second check valve 44 and a fourth overflow valve 45 are connected between the bidirectional hydraulic motor 41 and the reversing valve. The fifth shuttle valve 42 is connected to the input end and the output end of the reversing valve 51 in the winch control panel 5. The first one-way valve 43, the second one-way valve 44 and the fourth overflow valve 45 are connected to the output end of the reversing valve in the winch operating console, and the first one-way valve 43, the second one-way valve 44 and the fourth overflow valve 45 are connected in parallel to the output end of the reversing valve in the winch operating console; the winch 4 also has a second pressure reducing valve 46 and a normally closed brake 47, the output end of the fifth shuttle valve 42 is connected to the input end of the second pressure reducing valve 46, and the output end of the second pressure reducing valve 46 is connected to the oil cylinder of the normally closed brake 47.

[0018] The winch 4 is braked by the normally closed brake 47. When the winch 4 needs to be driven, a part of the hydraulic oil output from the reversing valve 51 flows into the fifth shuttle valve 42, and then flows through the second pressure reducing valve 46 and is input into the normally closed brake 47, so that the normally closed brake 47 releases the brake on the winch 4, and has good reliability; when the reversing valve 51 is reset to the middle position, the hydraulic oil stops being input; the hydraulic oil flows back from the oil cylinder of the normally closed brake 47 to the reversing valve 51.

[0019] like Figure 1As shown, in this embodiment, a hydraulically controlled one-way valve 9 is connected between the variable pump station 1 and the capstan control panel 5 to prevent the oil in the capstan control panel 5 from flowing back into the variable pump station 1, and a water cooling system 11 is connected between the oil return port of the capstan control panel 5 and the input end of the oil tank 2. When multiple capstans 4 and multiple variable pump stations 1 work for a long time, the components will generate a large amount of heat, which will increase the temperature of the hydraulic oil. The hydraulic oil returns to the oil tank 2 through the return oil pipeline. If the hydraulic oil is not cooled, the heat generated by the components cannot be quickly dissipated, causing great damage to the components; the capstan 4 and the capstan control panel 5 are connected to a signal return oil circuit T0, which is connected to the oil tank 2 through the signal return oil circuit T0, and the signal return oil circuit T0 is connected to the shuttle valve 53. Through the return oil circuit T0, the signal oil of the LS feedback oil circuit, the LX feedback oil circuit and the LY feedback oil circuit flows back to the oil tank 2.

[0020] In the present invention, each winch control panel 5 is connected with an LS feedback oil circuit and an LX feedback oil circuit through a shuttle valve 53. By connecting the LS feedback oil circuit and the LX feedback oil circuit between adjacent winch control panels 5, the control signal oil of any winch control panel 5 can be fed back to the control end of the signal amplifier 3 through the LS feedback oil circuit, thereby shortening the execution time of the winch 4; part of the signal oil in the LS feedback oil circuit in the head winch control panel 6 flows into the LY feedback oil circuit through the spring chamber of the pressure compensation valve 52, and flows to the spring chambers of all pressure compensation valves 52 through the LY feedback oil circuits connected in parallel, so that the pressure of the spring chamber of each pressure compensation valve is consistent, so that the hydraulic oil will only flow to the winch 4 connected to the winch control panel 5 with the reversing valve 51 opened, thereby realizing the linkage control between multiple winches 4.

Claims

1. A multi-winch linkage system, comprising a variable pump station (1), an oil tank (2), a signal amplifier (3), three or more winches (4) and three or more winch control consoles (5), wherein the input end of the variable pump station (1) is connected to the output end of the oil tank (2), the output end of the variable pump station (1) is connected to the input end of the signal amplifier (3), the output end of the variable pump station (1) is connected to the oil inlet of a plurality of winch control consoles (5), the oil outlet of a plurality of winch control consoles (5) is connected to the input end of the oil tank (2), and the winches (4) are connected to the winch control consoles (5) in a one-to-one manner, characterized in that: The winch control panel (5) is provided with a reversing valve (51), a pressure compensating valve (52) and a shuttle valve (53); one side of the reversing valve (51) is connected to the output end of the variable pump station (1), the input end of the oil tank (2) and the output end of the pressure compensating valve (52); the other side is connected to the input end of the pressure compensating valve (52) and the winch (4); the shuttle valve (53) is connected to the pressure compensating valve (52); The capstan control panel (5) is connected to a feedback oil circuit, which includes an LS feedback oil circuit, an LX feedback oil circuit and a LY feedback oil circuit. The LS feedback oil circuits of adjacent capstan control panels (5) are connected to the LX feedback oil circuits, and the LY feedback oil circuits of all capstan control panels (5) are connected together. The LY feedback oil circuit is connected to a spring chamber of a pressure compensation valve (52), and the LS feedback oil circuit and the LX feedback oil circuit are connected to a shuttle valve (53).

2. The multi-winch linkage system according to claim 1, characterized in that: The winch control panel (5) comprises a head winch control panel (6), a middle winch control panel (7) and a tail winch control panel (8), and the head winch control panel (6), the middle winch control panel (7) and the tail winch control panel (8) are all connected to the winch (4).

3. The multi-winch linkage system according to claim 2, characterized in that: A second signal amplifier (61) is also provided in the head winch control console (6), the input end of the second signal amplifier (61) is connected to the variable pump station (1), and the pressure compensation valve (52) is connected to the control end of the second signal amplifier (61) via an LY feedback oil circuit.

4. The multi-winch linkage system according to claim 2, characterized in that: A first pressure reducing valve (85) and a fourth shuttle valve (86) are also provided in the tail winch control console (8); the input end of the first pressure reducing valve (85) is connected to the output end of the variable pump station (1); the output end of the first pressure reducing valve (85) is connected to the fourth shuttle valve (86); and the fourth shuttle valve (86) is connected to the LS feedback oil circuit.

5. The multi-winch linkage system according to claim 1, characterized in that: The winch (4) is provided with a bidirectional hydraulic motor (41), which is connected to the input end of the reversing valve in the winch control panel and the output end of the reversing valve. At the same time, the bidirectional hydraulic motor (41) is connected to the input end of the oil tank (2). A fifth shuttle valve (42), a first check valve (43), a second check valve (44) and a fourth overflow valve (45) are connected between the bidirectional hydraulic motor (41) and the reversing valve. The fifth shuttle valve (42) is connected to the input end and the output end of the reversing valve in the winch control panel. The first check valve (4 3), the second one-way valve (44) and the fourth overflow valve (45) are connected to the output end of the reversing valve in the winch operating console, and the first one-way valve (43), the second one-way valve (44) and the fourth overflow valve (45) are connected in parallel to the output end of the reversing valve in the winch operating console; the winch (4) also has a second pressure reducing valve (46) and a normally closed brake (47), the output end of the fifth shuttle valve (42) is connected to the input end of the second pressure reducing valve (46), and the output end of the second pressure reducing valve (46) is connected to the oil cylinder of the normally closed brake (47).

6. The multi-winch linkage system according to claim 1, characterized in that: A hydraulically controlled one-way valve (9) is connected between the variable pump station (1) and the capstan operating console (5).

7. The multi-winch linkage system according to claim 1, characterized in that: A water cooling system (11) is connected between the oil return port of the winch control console (5) and the input end of the oil tank (2).

8. The multi-winch linkage system according to claim 2, characterized in that: The LS feedback oil circuit of the head winch control console (6) is connected to the control end of the signal amplifier (3).

9. The multi-winch linkage system according to claim 2, characterized in that: In the head winch control panel (6), the LS feedback oil circuit is connected to the pressure compensation valve (52), and in the tail winch control panel (8), a plug (10) is provided between the LS feedback oil circuit and the pressure compensation valve (52).

10. The multi-winch linkage system according to claim 1, characterized in that: The capstan (4) and the capstan control console (5) are connected to a signal oil return line T0, which is connected to the oil tank (2) via the signal oil return line T0, and the signal oil return line T0 is connected to the shuttle valve (53).

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