Hydraulic oil balancing method for multiple winches

Abstract

A hydraulic oil balancing method for multiple winches is used for balancing the pressure intensity between the winches in a multi-winch system, the multi-winch system comprises a variable pump station, an oil tank, a signal amplifier, a plurality of winch control boards and the winches with the same number as the winch control boards, and each winch control board comprises a head winch control board and a tail winch control board set. The winch control boards are connected with LY feedback oil ways, and the LY feedback oil ways of all the winch control boards are connected in parallel. The LS feedback oil way and the LX feedback oil way are connected with the shuttle valve, the LY feedback oil way is connected with a spring cavity of the pressure compensation valve, and the LS feedback oil way of the head winch control console is connected with the spring cavity of the pressure compensation valve. The LY feedback oil ways which are connected in parallel enable the pressure of the spring cavities of the pressure compensation valves to be consistent, so that the amount of hydraulic oil flowing to the winch connected with the winch control board is determined through the opening degree of the reversing valve.

Description

Technical Field

[0001] The invention relates to the technical field of oil supply of hydraulic pump stations, and in particular to a linkage method between multiple winches. Background Art

[0002] Hydraulic winch is a device that uses hydraulic system to provide power. Its working principle is to convert pressure into mechanical energy through hydraulic oil circuit, so as to drive the winch to rotate. When multiple hydraulic winches need to work at the same time, the oil circuit can be connected to achieve the coordinated work of multiple winches, improve work efficiency and rescue ability, 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 adventure and other fields, especially in occasions where a large amount of traction is required or multiple winches need to work together. The application of this technology is particularly important. In the technology of multi-winch linkage, what needs to be solved is the balance problem of hydraulic oil between multiple winches, that is, the hydraulic oil can be evenly delivered to each winch according to the load conditions of each winch. Summary of the invention

[0003] The problem to be solved by the present invention is the balance of hydraulic oil between multiple winches.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a hydraulic oil balancing method for multiple winches, the balancing method is used to balance the pressure between winches in a multiple winch system, the multiple winch system includes multiple winch control panels and winches with the same number of winch control panels, the winch control panels are connected one-to-one with the winches, a reversing valve and a pressure compensating valve are provided in the winch control panel, and the reversing valve is connected to the pressure compensating valve; the winch control panel includes a head winch control panel and a rear winch control panel group, wherein the rear winch control panel group is composed of more than one winch control panel; the winch control panel is connected to a LY feedback oil circuit, the LY feedback oil circuits of all winch control panels are connected in parallel, and the LY feedback oil circuit is connected to the spring chamber of the pressure compensating valve.

[0005] The specific steps include: S1, hydraulic oil flows to the reversing valve, and then flows to the pressure compensation valve through the reversing valve; S2, after the hydraulic oil flows through the pressure compensation valve, a portion of the hydraulic oil flows to the spring chamber of the pressure compensation valve 41; S3, the pressure signal is transmitted to the spring chambers of the remaining pressure compensation valves through the LY feedback oil circuits connected in parallel, so that the pressures of the spring chambers of all pressure compensation valves are consistent.

[0006] In the above method, the spring chamber of the pressure compensating valve in the head winch control panel is connected to the LY feedback oil circuit. Since the LY feedback oil circuits of all winch control panels are connected in parallel, the maximum pressure signal is transmitted to the spring chamber of the pressure compensating valve in each winch control panel through the LY feedback oil circuit, that is, the pressure of all pressure compensating valve spring chambers is the same, which also makes the pressure at the input end of each pressure compensating valve the same. Since the input end of the pressure compensating valve is connected to the reversing valve, the pressure at both ends of the reversing valve in each winch control panel is also the same, that is, the amount of hydraulic oil flowing into each winch control panel is only related to the opening size of the reversing valve, and the hydraulic oil can be delivered in a balanced manner according to the size of the opening of each winch reversing valve. 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 It is a schematic diagram of the hydraulic system of the winch control console in an embodiment of the present invention; Figure 3 It is a flow chart 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] A hydraulic oil balancing method for multiple winches, the balancing method is used to balance the pressure between winches in a multiple winch system, the multiple winch system includes multiple winch control consoles 1 and winches 2 with the same number as the winch control consoles 1, the winch control consoles 1 are connected one-to-one with the winches 2, a reversing valve 11 and a pressure compensating valve 12 are provided in the winch control console 1, and the reversing valve 11 is connected to the pressure compensating valve 12.

[0010] The winch control panel 1 includes a head winch control panel 3 and a tail winch control panel group 4, wherein the tail winch control panel group 4 is composed of more than one winch control panel 1; the winch control panel 1 is connected to a LY feedback oil circuit, the LY feedback oil circuits of all winch control panels 1 are connected in parallel, and the LY feedback oil circuit is connected to the spring chamber of the pressure compensation valve 12.

[0011] The winch control panel 4 includes a head winch control panel 6 and a tail winch control panel group 7, wherein the tail winch control panel group 7 is composed of more than one winch control panel 4. In this embodiment, the tail winch control panel group 7 is composed of one winch control panel 4; the winch control panel 4 is connected to a LY feedback oil circuit, and the LY feedback oil circuits of all winch control panels 4 are connected in parallel.

[0012] In this embodiment, the hydraulic oil flows to the pressure compensating valve 12 through the reversing valve 11, and then flows out of the pressure compensating valve 12, wherein a part of the hydraulic oil flows back to the pressure compensating valve 0, and the other part of the hydraulic oil flows to the LY feedback oil circuit. Since the LY feedback oil circuits are connected in parallel, the signal oil is input into the spring chamber of the pressure compensating valve 12 through the LY feedback oil circuit, so that the pressure of the spring chamber of each pressure compensating valve is consistent, so that the hydraulic oil flows evenly to each winch control console 1, and the amount of hydraulic oil flowing to the winch 2 is controlled by the opening size of the reversing valve 12.

[0013] like Figure 1 to Figure 2 As shown, an oil drain circuit T0 is connected between the capstan operating console 1 and the capstan 2 , the oil drain circuit T0 is connected to the reversing valve 11 , a pilot-type overflow valve 13 is connected between the oil drain circuit T0 and the reversing valve 11 , and a balancing valve 14 is connected between the reversing valve 11 and the oil tank 2 .

[0014] In this embodiment, after the reversing valve 11 is reset, the winch 2 stops working. At this time, some hydraulic oil in the feedback oil circuit has not flowed back to the oil tank. The pilot overflow valve 13 is opened, and the signal oil in the feedback oil circuit flows to the T0 oil drain circuit through the pilot overflow valve 13, and then flows back to the oil tank to achieve unloading; at the same time, some hydraulic oil still stays in the oil circuit of the reversing valve 11. At this time, the balance valve 14 is opened, and the hydraulic oil of the reversing valve 11 flows back to the oil tank through the balance valve 14 to achieve unloading.

[0015] The above-mentioned hydraulic oil balancing method for multiple winches specifically comprises the following steps: S1, hydraulic oil flows to the reversing valve 11, and then flows to the pressure compensation valve 12 through the reversing valve 11; S2, after the hydraulic oil flows through the pressure compensation valve 12, a part of the hydraulic oil flows to the spring chamber of the pressure compensation valve 41; S3. The pressure signal is transmitted to the spring chambers of the remaining pressure compensating valves 12 through the LY feedback oil circuits connected in parallel, so that the pressures of the spring chambers of all the pressure compensating valves 12 are consistent.

[0016] S4, push the reversing valve 11 to reset the reversing valve 11, and the winch 2 stops working; S5, open the pilot relief valve 13, so that the hydraulic oil in the feedback oil circuit flows away through the oil drain circuit T0; S6. Open the balancing valve 14 to allow the hydraulic oil in the oil circuit of the reversing valve 11 to flow away through the balancing valve 14.

[0017] The above method transmits the pressure signal to the LY feedback oil circuit connected to the spring chamber of the pressure compensating valve 12 in a certain winch control panel 1. Since the LY feedback oil circuits of all the winch control panels 1 are connected in parallel, the maximum pressure signal is transmitted to the spring chamber of the pressure compensating valve 12 in each winch control panel 1 through the LY feedback oil circuit, that is, the pressure of the spring chambers of all the pressure compensating valves 12 is the same, which also makes the pressure at the input end of each pressure compensating valve 12 the same. Since the input end of the pressure compensating valve 12 is connected to the reversing valve 11, the pressure at both ends of the reversing valve 11 in each winch control panel 1 is also the same, that is, the amount of hydraulic oil flowing into each winch control panel 1 is only related to the opening size of the reversing valve 11, and the hydraulic oil can be delivered in a balanced manner according to the size of the opening of the reversing valve 11 in each winch control panel 1.

Claims

1. A hydraulic oil balancing method for multiple winches, the balancing method being used to balance the pressure between winches in a multiple winch system, the multiple winch system comprising a plurality of winch control consoles (1) and winches (2) having the same number as the winch control consoles (1), the winch control consoles (1) being connected one-to-one with the winches (2), characterized in that: A reversing valve (11) and a pressure compensating valve (12) are provided in the capstan operating console (1), and the reversing valve (11) is connected to the pressure compensating valve (12); The winch control panel (1) comprises a head winch control panel (3) and a tail winch control panel group (4), wherein the tail winch control panel group (4) is composed of more than one winch control panel (1); the winch control panel (1) is connected to an LY feedback oil circuit, the LY feedback oil circuits of all the winch control panels (1) are connected in parallel, and the LY feedback oil circuit is connected to the spring chamber of the pressure compensation valve (12). The specific steps include: S1, the hydraulic oil flows to the reversing valve (11), and then flows to the pressure compensating valve (12) through the reversing valve (11); S2, after the hydraulic oil flows through the pressure compensating valve (12), a portion of the hydraulic oil flows to the spring chamber of the pressure compensating valve (41); S3, through the LY feedback oil circuits connected in parallel, the pressure signal is transmitted to the spring chambers of the remaining pressure compensating valves (12), so that the pressures of the spring chambers of all the pressure compensating valves (12) are consistent.

2. The hydraulic oil balancing method for multiple winches according to claim 1, characterized in that: An oil drain circuit T0 is connected between the winch operating console (1) and the winch, and the oil drain circuit T0 is connected to the input end of the oil tank (2).

3. The hydraulic oil balancing method for multiple winches according to claim 2, characterized in that: The oil drain line T0 is connected to the pressure compensating valve (12), and a pilot-operated relief valve (13) is connected between the oil drain line T0 and the pressure compensating valve (12).

4. The hydraulic oil balancing method for multiple winches according to claim 3, characterized in that: The reversing valve (11) is also connected to a balancing valve (14).

5. The hydraulic oil balancing method for multiple winches according to claim 4, characterized in that: S3 also includes the following steps: S4, pushing the reversing valve (11) to reset the reversing valve (11), at which time the capstan (2) stops working; S5, open the pilot relief valve (13) to allow the hydraulic oil in the feedback oil circuit to flow away through the oil drain circuit T0; S6. Open the balancing valve (14) to allow the hydraulic oil in the oil circuit of the reversing valve (11) to flow away through the balancing valve (14).

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