A multi-way valve for electric loaders

Abstract

This utility model relates to the field of multi-way valve technology, and in particular to a multi-way valve for an electric loader, comprising a valve body and a handle rod. The handle rod is located at the top of the valve body, and a pressure plate is sleeved on the outer wall of the handle rod. A valve core push rod is abutted at the bottom end of the pressure plate. Four valve core push rods are evenly arranged at the top of the valve body. A linear position sensor is located at the top of the valve body and is positioned on the side wall of the handle rod. By detecting the amplitude of the handle movement, the speed of the oil pump motor is dynamically adjusted according to the valve core opening, thereby adjusting the oil supply. This reduces the heat generation of hydraulic oil, pipelines, and the oil pump, achieving energy saving.

Description

Technical Field

[0001] This utility model relates to the field of multi-way valve technology, and in particular to a multi-way valve for an electric loader. Background Technology

[0002] With the global energy structure transformation and the advancement of "dual-carbon" goals, construction machinery is accelerating its upgrade towards electrification. Electric loaders, as core operational equipment in mining, infrastructure, and logistics, are experiencing a continuous rise in market demand and technological development. Compared to traditional fuel-powered loaders, electric loaders rely on battery packs for power, offering significant advantages such as zero emissions, low noise, and low operating costs. However, this also places higher demands on the energy efficiency matching, control precision, and reliability of the overall power system. The hydraulic control system, responsible for executing core actions such as boom lifting and bucket tilting, has become a key factor determining the operating efficiency and range of electric loaders. The mechanical handle multi-way valve, as the "control center" of the hydraulic system, directly affects the overall operating experience and energy utilization efficiency.

[0003] The mechanical lever multi-way valves used in existing electric loaders regulate the oil output by controlling the valve core opening through the lever. However, this control method has significant shortcomings: when the oil pump motor maintains a constant speed, a large amount of hydraulic oil flows back to the oil tank through the overflow valve when the lever is at a small angle (i.e., the valve core opening is small). This not only wastes energy but also causes the hydraulic oil to overheat due to overflow, which is detrimental to the stable operation of the hydraulic system. Conversely, when the lever is at a large opening, insufficient oil supply occurs, resulting in slow cylinder operation and affecting the loader's operating efficiency. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a multi-way valve for electric loaders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a multi-way valve for an electric loader, including a valve body and a handle rod. The handle rod is provided at the top of the valve body. A pressure plate is sleeved on the outer wall of the handle rod. The bottom end of the pressure plate abuts against a valve core rod. The valve core rod is located at the top of the valve body. Four valve core rods are evenly arranged. A linear position sensor is provided at the top of the valve body. The linear position sensor is located on the side wall of the handle rod.

[0007] Furthermore, four linear position sensors are provided.

[0008] Furthermore, the two adjacent linear position sensors are spaced 90 degrees apart.

[0009] Furthermore, the input terminal of the linear position sensor is connected to the input terminal of the motor controller via a wire, and the output terminal of the motor controller is connected to the input terminal of the motor.

[0010] Furthermore, the motor controller includes a receiving module and a processing module, wherein the input terminal of the receiving module is connected to a linear position sensor via a wire, the output terminal of the receiving module is connected to the processing module via a wire, and the output terminal of the processing module is connected to the input terminal of the motor via a wire.

[0011] The multi-way valve for electric loaders proposed in this utility model has the following advantages: by detecting the range of the handle movement, the speed of the oil pump motor is dynamically adjusted according to the valve core opening, thereby adjusting the oil supply. In this way, the heat generation of hydraulic oil, pipelines, and oil pump is reduced, achieving energy saving. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a graph showing the speed control curve of the oil pump motor of this utility model.

[0014] Figure 3 This is a graph showing the speed control curve of the oil pump motor during bucket collection in this utility model.

[0015] In the diagram: 1. Valve body; 2. Handle lever; 3. Pressure plate; 4. Valve core push rod; 5. Linear position sensor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-3A multi-way valve for an electric loader includes a valve body 1 and a handle 2. The handle 2 is located at the top of the valve body 1, and a pressure plate 3 is sleeved on the outer wall of the handle 2. The bottom end of the pressure plate 3 abuts against a valve core rod 4. The valve core rod 4 is located at the top of the valve body 1, and four valve core rods 4 are evenly arranged. A linear position sensor 5 is located at the top of the valve body 1 to detect the movement range of the handle 2, thereby adjusting the motor speed through the motor controller. The linear position sensor 5 is located on the side wall of the handle 2. A spring is provided between the bottom end of the valve core rod 4 and the valve body 1. The spring can automatically return the valve core rod 4 to its initial position, realizing the automatic return function. The spring, valve body 1, handle 2, pressure plate 3, motor and valve core rod 4 are all existing technologies, so their specific structure and working principle will not be described in detail in this utility model.

[0018] Four linear position sensors 5 are provided, matching the number of valve core push rods 4, which enables more accurate measurement of the distance between the pressure plate 3 and the linear position sensor 5.

[0019] The linear position sensors 5 are spaced 90 degrees apart, and the valve core rods 4 are spaced 90 degrees apart, so that the linear position sensors 5 are evenly distributed around the handle rod 2.

[0020] The input end of the linear position sensor 5 is connected to the input end of the motor controller via a wire, and the output end of the motor controller is connected to the input end of the motor. This design allows the motor speed to be controlled when the handle lever 2 moves in one direction during operation, ensuring that the oil output matches the motor speed. This avoids a constant motor speed. If the oil supply is too large, a large amount of hydraulic oil will flow back to the oil tank through the overflow valve, causing the hydraulic oil to overheat. This not only wastes energy but also causes the hydraulic oil to overheat due to overflow, which is detrimental to the stable operation of the hydraulic system. If the oil supply is insufficient, the cylinder will run slowly, affecting the loader's operating efficiency, thus improving energy saving.

[0021] The motor controller includes a receiving module and a processing module. The input terminal of the receiving module is connected to the linear position sensor 5 via a wire, the output terminal of the receiving module is connected to the processing module via a wire, and the output terminal of the processing module is connected to the input terminal of the motor via a wire.

[0022] When the loader is under switch control, the motor runs at a fixed speed. When the switch is closed, the motor runs at 650 r / min. When the switch is open, the motor stops running.

[0023] When the loader is started and in operation under the control of lever 2, the linear position sensor 5 receives the distance signal between the pressure plate 3 and the linear position sensor 5, i.e., the sensor distance. Based on this sensor distance, the speed of the oil pump motor is adjusted according to a formula, the specific formula being:

[0024] ;

[0025] When the loader starts and the bucket is being retracted using lever 2, the linear position sensor 5 receives the distance signal between the pressure plate 3 and the linear position sensor 5, i.e., the sensor distance. Based on this sensor distance, the speed of the oil pump motor is adjusted according to a formula, the specific formula being:

[0026] ;

[0027] in For sensor distance, This refers to the oil pump motor speed;

[0028] Therefore, when the handle lever 2 is in control, the corresponding oil pump motor speed is adjusted according to the movement of the handle lever 2. When the handle lever 2 is in motion, it will drive the valve core push rod 4 to move, thereby controlling the oil output. This allows the oil pump motor to use different speeds at different oil supply volumes, thus ensuring the stable operation of the oil pump motor while also providing energy-saving effects.

[0029] Working method: When work is required, turn the handle lever 2, which causes the handle lever 2 to drive the pressure plate 3 to rotate to one side, thereby changing the distance between the pressure plate 3 and 5. When the pressure plate 3 rotates, it will squeeze the valve core push rod 4, causing the valve core push rod 4 to move downward, thereby controlling the valve and increasing the oil output. In addition, when the distance between the pressure plate 3 and 5 changes, the motor controller will control the motor to change the speed, so that the motor can run efficiently and stably.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A multi-way valve for an electric loader, comprising a valve body (1) and a handle lever (2), characterized in that: A handle rod (2) is provided at the top of the valve body (1). A pressure plate (3) is sleeved on the outer wall of the handle rod (2). A valve core rod (4) is abutted at the bottom of the pressure plate (3). The valve core rod (4) is located at the top of the valve body (1). Four valve core rods (4) are evenly arranged. A linear position sensor (5) is provided at the top of the valve body (1). The linear position sensor (5) is located on the side wall of the handle rod (2).

2. The multi-way valve for an electric loader according to claim 1, characterized in that: Four linear position sensors (5) are provided.

3. The multi-way valve for an electric loader according to claim 1, characterized in that: The two adjacent linear position sensors (5) are spaced 90 degrees apart.

4. The multi-way valve for an electric loader according to claim 1, characterized in that: The input end of the linear position sensor (5) is connected to the input end of the motor controller via a wire, and the output end of the motor controller is connected to the input end of the motor.

5. A multi-way valve for an electric loader according to claim 4, characterized in that: The motor controller includes a receiving module and a processing module, wherein the input end of the receiving module is connected to the linear position sensor (5) via a wire, the output end of the receiving module is connected to the processing module via a wire, and the output end of the processing module is connected to the input end of the motor via a wire.

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