Amplified oil way of winch

Abstract

An amplification oil way of a winch comprises a variable pump station, an oil tank, executive components, a valve body assembly and a first signal amplifier, 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 first signal amplifier and the input ends of the executive components, and the valve body assembly is connected with the executive components. Feedback oil ways are arranged on the valve body assemblies, every two adjacent feedback oil ways are connected in series, the feedback oil way of one valve body assembly is connected with the control end of the first signal amplifier, and the output end of the first signal amplifier is connected with the control end of the variable pump station. And the reaction time between execution elements is too long.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, and particularly relates to an amplified oil circuit of a winch. Background Art

[0002] A hydraulic pump station is mainly used to supply hydraulic oil to the hydraulic system of mechanical equipment, and generally includes a motor, a hydraulic pump, an oil tank, etc.; the hydraulic pump station can be a constant-pressure hydraulic pump station or a constant-flow hydraulic pump station; a hydraulic winch is used on some lifting equipment, which provides power through the hydraulic pump station and transmits and converts energy through liquid pressure to realize the rotation of the winch; in the constant-pressure oil supply mode of the hydraulic pump station, the overflow flow is kept within the preset overflow holding flow range by increasing or decreasing the output flow of the pump oil. In the constant-flow oil supply mode, a preset target oil supply flow is set, and the overflow flow is monitored in real time through a flow monitoring device. If the overflow flow is greater than zero, it means that the overflow valve is in the working state. At this time, the overflow pressure of the proportional overflow valve is increased so that all the flow output by the oil supply flow regulating device is input to the winch. However, when supplying oil over a long distance, only the output flow and the target required oil volume are kept constant, which cannot shorten the time for the hydraulic oil to reach the actuator from the hydraulic pump, and the reaction time between the hydraulic pump and the actuator is long.

[0003] A patent document with the authorization announcement number of CN220869765U discloses an amplified oil circuit of a winch, which increases the output oil volume of the variable pump station, shortens the time for the hydraulic oil to reach the actuator from the variable pump station, and shortens the reaction time between the variable pump station and the actuator. It includes a variable pump station, an actuator, and a signal amplifier. The input end of the variable pump station is connected to the oil tank, the output end of the variable pump station is connected to the input ends of the actuator and the signal amplifier, the actuator is connected to the control end of the signal amplifier, and the output end of the signal amplifier is connected to the feedback end of the variable pump station; when the hydraulic oil is input to the actuator, the actuator outputs signal oil to conduct the signal amplifier, and the hydraulic oil output from the output end of the variable pump station is input to the feedback end of the variable pump station through the signal amplifier.

[0004] However, when multiple winches are linked, there is also a certain distance between each winch. If only relying on the signal amplifier connected to the variable pump station, the reaction time between winches is still too long. Summary of the Invention

[0005] The purpose of the utility model is to provide an amplified oil circuit for a winch, and solve the technical problem of too long reaction time between actuators when multiple actuators are linked.

[0006] To solve the above technical problems, the present utility model provides an amplified oil circuit for a winch, which includes a variable pump station, an oil tank, an actuator, a valve body assembly, and a first signal amplifier. 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 first signal amplifier and the input ends of a plurality of actuators, the valve body assembly is connected to the actuator, a feedback oil circuit is provided on the valve body assembly, adjacent feedback oil circuits are connected in series, the feedback oil circuit of one of the valve body assemblies is connected to the control end of the first signal amplifier, and the output end of the first signal amplifier is connected to the control end of the variable pump station.

[0007] In this solution, the variable pump station inputs the hydraulic oil in the oil tank into the valve body assembly, and the valve body assembly transports the hydraulic oil to the actuator to drive the actuator. After receiving the hydraulic oil, the valve body assembly connects each valve body assembly through the mutually connected series feedback oil circuits, and finally outputs the feedback oil signal to the control end of the first signal amplifier through the feedback oil circuit on one of the valve body assemblies. The first signal amplifier controls the flow rate of the main oil circuit of the first signal amplifier according to the feedback oil signal at the control end, thereby controlling the output of the hydraulic pump station to achieve the purpose of controlling the amount of oil flowing into the valve body assembly. In the present utility model, the main oil circuit of the first signal amplifier refers to the oil circuit between the input end and the output end of the first amplifier. In the present utility model, since the feedback oil circuits on each valve body assembly are connected in series, therefore, no matter which valve body assembly emits the feedback oil signal, it can be transmitted to the hydraulic pump station, thereby realizing the adjustment of the output of the hydraulic pump station. Therefore, when multiple actuators are linked, the reaction time between the actuators will become shorter.

[0008] Further, a first overflow valve is connected between the output end of the variable pump station and the oil tank, and the oil in the oil circuit can flow back to the oil tank through the first overflow valve. In this way, the oil circuit can be better protected.

[0009] Further, a water cooling system is connected between the input end of the oil tank and the oil return port of the valve body assembly. In this way, the hydraulic oil returning to the oil tank can be better cooled.

[0010] Further, the variable pump station is a load-sensitive variable hydraulic pump.

[0011] Further, a pressure gauge is connected to the output end of the variable pump station.

[0012] Further, a switch is connected between the output end of the variable pump station and the pressure gauge. Description of the Drawings

[0013] Figure 1 Schematic diagram of an embodiment of the present utility model. Detailed Embodiment

[0014] The following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments.

[0015] As Figure 1 shown, a winch amplification oil circuit includes a variable pump station 1, an oil tank 2, an actuator 31, a valve body assembly 32, and a first signal amplifier 4. 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 first signal amplifier 4 and the input ends of a plurality of valve body assemblies 32. The output end of the valve body assembly 32 is connected to the actuator 3, and a feedback oil circuit is provided on the valve body assembly, and adjacent feedback oil circuits are connected in series. The feedback oil circuit of one of the valve body assemblies 32 is connected to the control end of the first signal amplifier 4, and the output end of the first signal amplifier 4 is connected to the control end of the variable pump station 1. The valve body assembly 32 includes two valve body assemblies 32 and two actuators 31 connected in parallel on the output oil circuit of the variable pump station 1 in this embodiment. The actuator 31 is connected to the corresponding valve body assembly 32 one by one. At the same time, when in use, the number of valve body assemblies 32 connected in parallel and the actuators 31 connected to the increased valve body assemblies 32 can be increased on the output oil circuit of the variable pump station 1 according to the use scenario. In order to drive the increased actuators 31, the number of variable pump stations 1 connected in parallel can also be increased on the output oil circuit.

[0016] The oil return port of the valve body assembly 32 is connected to the oil tank 2.

[0017] The variable pump station 1 inputs hydraulic oil into the valve body assembly 32. At this time, the valve body assembly 32 connects the feedback oil signals in series through the feedback oil circuit and inputs the feedback oil signal into the control end of the first signal amplifier 4 through the feedback oil circuit on one of the valve body assemblies, controlling the main oil circuit of the first signal amplifier 4 to work, thereby controlling the output of the hydraulic pump station to achieve the purpose of controlling the amount of oil flowing into the valve body assembly. In the present utility model, the main oil circuit of the first signal amplifier refers to the oil circuit between the input end and the output end of the first amplifier. In the present utility model, since the feedback oil circuits on each valve body assembly are connected in series, therefore, no matter which valve body assembly emits a feedback oil signal, it can be transmitted to the hydraulic pump station, thereby realizing the adjustment of the output of the hydraulic pump station. Therefore, when multiple actuators are linked, the reaction time between the actuators will become shorter.

[0018] In the present utility model, the actuators are winches and hydraulic motors. The variable pump station 1 is a load-sensitive variable hydraulic pump.

[0019] As Figure 1As shown, a first overflow valve 6 is connected between the output end of the variable pump station 1 and the oil tank 2. When the oil pressure at the output end of the variable pump station 1 is greater than the set pressure of the first overflow valve 6, the excess hydraulic oil drains from the first overflow valve 6. A water cooling system 7 is connected between the input end of the oil tank 2 and the oil return port of the valve body assembly 32. When multiple actuators 31 and multiple variable pump stations 1 work for a long time, a large amount of heat will be generated, causing the temperature of the hydraulic oil to rise. The hydraulic oil returns to the oil tank through the oil return pipeline. If the hydraulic oil is not cooled, the heat generated by the components cannot dissipate quickly, which will cause greater damage to the components.

[0020] A pressure gauge 5 is connected to the output end of the variable pump station 1; a switch 8 is connected between the output end of the variable pump station 1 and the pressure gauge 5.

Claims

1. An amplified oil circuit of a winch, characterized in that: It includes a variable pump station (1), an oil tank (2), an actuator (31), a valve body assembly (32) and a first signal amplifier (4). 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 first signal amplifier (4) and the input ends of multiple valve body assemblies (32). The valve body assembly (32) is connected to the actuator (31). A feedback oil circuit is provided on the valve body assembly (32), and adjacent feedback oil circuits are connected in series. The feedback oil circuit of one of the valve body assemblies (32) is connected to the control end of the first signal amplifier (4), and the output end of the first signal amplifier (4) is connected to the control end of the variable pump station (1).

2. The enlarged oil circuit of the winch according to claim 1, characterized in that: A first overflow valve (6) is connected between the output end of the variable pump station (1) and the oil tank (2), and the oil in the oil circuit can flow back to the oil tank (2) through the first overflow valve (6).

3. The enlarged oil circuit of the winch according to claim 1, characterized in that: A water cooling system (7) is connected between the input end of the oil tank (2) and the oil return port of the valve body assembly (32).

4. The amplified oil circuit of the winch according to claim 1, characterized in that: The variable pump station (1) is a load-sensitive variable hydraulic pump.

5. The enlarged oil circuit of the winch according to claim 1, characterized in that: A pressure gauge (5) is connected to the output end of the variable pump station (1).

6. The amplified oil circuit of the winch according to claim 5, wherein: A switch (8) is connected between the output end of the variable pump station (1) and the pressure gauge (5).

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