An electric mixer truck electronic control system and use method

Abstract

The present invention discloses an electric control system for an electric mixer truck and a method for using the system, comprising an operating unit, a controller, an electric oil pump and a transmission unit, wherein the electric oil pump and the transmission unit are installed between the operating unit and the controller, the controller is suitable for controlling the displacement direction of the electric oil pump, a motor is installed at the output end of the electric oil pump, the electric oil pump is suitable for driving the motor, the motor is a fixed displacement motor, a reducer is installed on the side of the motor facing away from the electric oil pump, and the motor is connected to the reducer; the present invention solves the problems that the operating method of the prior art is inconvenient, the speed control is rough, and the existing control of the mixing drum speed is concentrated in the traditional control engine, which requires a large amount of fuel and cannot achieve adaptability in terms of clean energy.

Description

Technical Field

[0001] The invention belongs to the field of mixing drums of mixer trucks, and specifically relates to an electric control system of an electric mixer truck and a use method thereof. Background Art

[0002] In the context of the scarcity of resources in the world and the increasing environmental pollution in my country, the country has been vigorously promoting the development of emerging industries such as new energy vehicles in recent years. At present, the technology of a series of new energy products such as pure electric vehicles and pure electric buses is becoming more and more mature, continuously promoted, and more and more popular. Electric mixer trucks are in the early stages of development and the technology is developing rapidly.

[0003] Most of the existing electric mixer truck control systems are button-type, with different gears set according to the number of times the button is pressed. Different gears correspond to different tank speeds. When the mixer truck is working, its tank speed must be adjusted at any time and quickly according to the on-site operation efficiency.

[0004] The existing buttons have the following disadvantages: 1. The button-type operation mode has a slow response because it requires multiple presses to find the appropriate speed. 2. Because the tank speed needs to be adjusted at any time and quickly according to the on-site operation efficiency, its speed is an arbitrary value within a range and needs to be adjusted frequently within the range; 3. The existing methods are mostly traditional control engines to control the oil pump speed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to solve the problems that the conventional operation mode is inconvenient, the speed control is rough, and the conventional control of the mixing drum speed is concentrated in the traditional control engine, which consumes a large amount of fuel and cannot achieve adaptability in terms of clean energy.

[0006] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention discloses an electric control system for an electric mixer truck, including an operating unit, a controller, an electric oil pump and a transmission unit. The operating unit is suitable for being installed at the tail of the mixer truck, and the controller is installed at the front end of the truck. The electric oil pump is a swash plate type axial piston variable displacement pump. The electric oil pump and the transmission unit are installed between the operating unit and the controller. The controller is suitable for controlling the displacement direction of the electric oil pump. A motor is installed at the output end of the electric oil pump. The electric oil pump is suitable for driving the motor. The motor is a fixed displacement motor. A reducer is installed on the side of the motor facing away from the electric oil pump. The motor is connected to the reducer, and the reducer is suitable for driving the rotation of the mixing drum.

[0007] The operating unit comprises an operating rod and a supporting plate, wherein a mounting hole is provided on the supporting plate, wherein the operating rod is mounted in the mounting hole, wherein a first swing arm is mounted under the operating rod, wherein one end of the first swing arm is fixedly connected to the operating rod, wherein a connecting rod is mounted on the other end of the first swing arm, wherein the connecting rod is fixedly connected to the first swing arm, wherein a first rotating shaft is connected to the lower end of the connecting rod, wherein the first rotating shaft is fixedly connected to the connecting rod, wherein a first angle detecting member is mounted on the first rotating shaft, wherein the first angle detecting member is suitable for detecting the direction of lateral rotation of the operating rod;

[0008] A second swing arm is installed under the joystick, one end of the second swing arm is detachably connected to the joystick, a second rotating shaft is installed at the other end of the second swing arm, a second angle detection member is installed on the second rotating shaft, and the second angle detection member is suitable for detecting the vertical rotation of the joystick;

[0009] The electronically controlled oil pump comprises a first electronic proportional valve and a second electronic proportional valve, wherein the first electronic proportional valve and the second electronic proportional valve are suitable for controlling the rotation direction of the mixing drum.

[0010] Furthermore, the joystick comprises a main rod, a sleeve is arranged under the main rod, external connecting rods are installed at both ends of the sleeve, two groups of internal connecting rods are installed between the external connecting rod and the main rod, and the angles between the two groups of internal connecting rods and the external connecting rods form an acute angle;

[0011] The two groups of outer connecting rods are fixedly connected to the upper end of the sleeve, and the sleeve rotates in the mounting hole. A vertical rod is installed between the two groups of inner connecting rods, and the lower end of the vertical rod is suitable for passing through the sleeve and rotatingly connected to the second swing arm.

[0012] Furthermore, the first swing arm is in a teardrop shape, and is provided with a first transition hole and a second transition hole, the first transition hole being located under the sleeve, the vertical rod being suitable for passing through the first transition hole and being rotatably connected to the second swing arm, and the connecting rod being suitable for passing through the second transition hole and being fixedly connected to the first swing arm.

[0013] Furthermore, the connecting rod member includes a push rod and a third swing arm, one end of the push rod is detachably connected to the first swing arm, the other end of the push rod is detachably connected to one end of the third swing arm, and the other end of the third swing arm is fixedly connected to the first rotating shaft.

[0014] Further, the first angle detection member includes a fourth swing arm, a fixed rod 1 and a first angular displacement sensor, one end of the fourth swing arm is fixedly connected to the first rotating shaft, the other end of the fourth swing arm is connected to the fixed rod 1, and one end of the fixed rod 1 away from the fourth swing arm is fixedly connected to the first angular displacement sensor, and the first angular displacement sensor is suitable for detecting the direction of lateral rotation of the joystick;

[0015] The second angle detection includes a fifth swing arm, a second fixed rod, and a second angular displacement sensor, wherein one end of the fifth swing arm is fixedly connected to the second rotating shaft, the other end of the fifth swing arm is connected to the second fixed rod, and one end of the second fixed rod away from the fifth swing arm is fixedly connected to the second angular displacement sensor, and the second angular displacement sensor is suitable for detecting the vertical rotation of the joystick;

[0016] The support plate is a bent plate, and there are two groups of support plates. The two groups of support plates are symmetrically designed. The second rotating shaft rotates along the axis between the two groups of support plates. The joystick, the first swing arm, the push rod and the third swing arm are all provided in two groups and are symmetrical along the first rotating axis.

[0017] Furthermore, the electronically controlled oil pump includes an oil pump body, the first electric proportional valve and the second electric proportional valve are both connected to the oil pump body, the first electric proportional valve is suitable for receiving a positive signal from the controller and the valve core moves to drive the oil pump body to displace positively, and the second electric proportional valve is suitable for receiving a negative signal from the controller and the valve core moves to drive the oil pump body to displace negatively.

[0018] Furthermore, the transmission unit includes a motor, a coupling is installed at the output end of the motor, a rotating shaft is installed at the end of the coupling away from the motor, the rotating shaft is connected to the oil pump body, and the rotating shaft is suitable for driving the motor speed to drive the oil pump body speed.

[0019] A method for using an electric control system of an electric mixer truck comprises the following steps:

[0020] Step 1: Determine that the joystick direction is horizontal left A, horizontal right B and vertical upward C. The joystick is in the middle position as the initial state, the oil pump output displacement is 0, and the mixing drum does not rotate;

[0021] Step 2: The joystick rotates from the middle position to the first direction A, the sleeve rotates to drive the first swing arm to rotate, and then pulls the push rod to drive the third swing arm to rotate, and the rotation of the third swing arm drives the first angular displacement sensor to turn;

[0022] The first angular displacement sensor rotates from the middle position to the first direction A, and the first angular displacement sensor outputs a positive analog signal to the controller. After receiving the positive analog signal, the controller outputs a voltage to the first electric proportional valve, and the voltage is proportional to the analog signal. The valve core of the first electric proportional valve moves under the action of the voltage, and the stroke of the valve core is proportional to the voltage.

[0023] The forward displacement of the oil pump body increases under the action of the valve core. The displacement is proportional to the stroke of the valve core. The increase in the displacement of the oil pump body drives the motor speed to increase, which in turn drives the speed of the reducer to increase, so that the forward rotation speed of the mixing drum increases;

[0024] Step 3: After the joystick returns to the middle position from the first direction A, it rotates along the second direction B, driving the first swing arm to rotate and push the push rod, thereby driving the third swing arm to rotate and driving the fourth swing arm to rotate, pushing the first angular displacement sensor;

[0025] The first angular displacement sensor rotates from the middle position to the second direction B, and the first angular displacement sensor outputs a negative analog signal. After receiving the negative analog signal, the controller outputs a voltage to the second electric proportional valve, and the voltage is proportional to the analog signal.

[0026] The valve core of the second electric proportional valve moves under the action of voltage, and the reverse displacement of the oil pump body increases under the action of the valve core. The increase in the displacement of the oil pump body drives the speed of the motor to increase, and drives the speed of the reducer to increase, so that the reverse rotation speed of the mixing drum increases;

[0027] Step 4. Move the joystick along the third direction C. The two groups of inner connecting rods rotate to move the vertical rod downward, thereby driving the second swing arm to rotate and drive the second rotating shaft. The fifth swing arm rotates to drive the second angular displacement sensor. The second angular displacement sensor outputs an analog signal to the controller. After the controller receives the signal, the rotation speed is proportional to the analog signal size, and the motor speed increases.

[0028] A rotating shaft is connected between the motor and the oil pump body. The increase in the motor speed drives the oil pump body speed to increase, which drives the motor speed to increase and drives the speed of the reducer to increase, and finally increases the rotation speed of the mixing drum.

[0029] Compared with the prior art, the present invention can achieve the following technical effects:

[0030] The present invention aims at the button-type operation mode of the prior art, which has a slow response and requires multiple presses to find a roughly appropriate speed. The present invention designs a joystick-type operation method, which is simple and effective, reduces the number of presses, and can effectively adjust the speed of the mixing drum; secondly, the existing methods are mostly traditional control engines to control the speed of the oil pump, which on the one hand wastes energy and causes pollution, and the electric control method effectively solves the waste problem. On the other hand, the present invention has an electronically controlled proportional valve to drive the oil pump, and then drive the speed of the mixing drum, which is convenient, effective, and can respond quickly; the existing control technology mostly focuses on a group of angular displacement sensors to control the steering problem. The present invention designs different transmission methods to drive two groups of angular displacement sensors to achieve steering and speed increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is the installation position diagram of the present invention;

[0033] Figure 2 This is a structural diagram of the connection between the electronically controlled oil pump and the transmission unit of the present invention;

[0034] Figure 3 is a structural diagram of a control unit of the present invention;

[0035] Figure 4 The present invention Figure 3 A magnified view of the D portion;

[0036] Figure 5 The present invention Figure 3 A magnified view of part E;

[0037] Figure 6 The present invention Figure 3 Magnified view of part F;

[0038] Figure 7 It is the transmission diagram of each direction of the joystick of the present invention.

[0039] In the figure: 1. operating unit; 2. controller; 3. electric oil pump; 4. transmission unit; 5. motor; 6. reducer; 7. mixing drum; 8. joystick; 9. support plate; 10. first swing arm; 11. first transmission shaft; 12. second swing arm; 13. second transmission shaft; 14. first electric proportional valve; 15. second electric proportional valve; 16. main rod; 17. sleeve; 18. outer connecting rod; 19. inner connecting rod; 20. vertical rod; 21. push rod; 22. third swing arm; 23. fourth swing arm; 24. fixed rod one; 25. first angular displacement sensor; 26. fifth swing arm; 27. fixed rod two; 28. second angular displacement sensor; 29. ​​oil pump body; 30. motor; 31. coupling; 32. rotating shaft. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The application principle of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] like Figures 1 to 7As shown, it is an embodiment of the present invention, an electric control system of an electric mixer truck, comprising an operating unit 1, a controller 2, an electric oil pump 3 and a transmission unit 4, the operating unit 1 is suitable for being installed at the tail of the mixer truck, the controller 2 is installed at the front end of the truck, the electric oil pump 3 is a swash plate type axial piston variable displacement pump, the electric oil pump 3 and the transmission unit 4 are installed between the operating unit 1 and the controller 2, the controller 2 is suitable for controlling the displacement direction of the electric oil pump 3, a motor 5 is installed at the output end of the electric oil pump 3, the electric oil pump 3 is suitable for driving the motor 5, the motor 5 is a fixed displacement motor 5, a reducer 6 is installed on the side of the motor 5 facing away from the electric oil pump 3, the motor 5 is connected to the reducer 6, and the reducer 6 is suitable for driving the rotation of the mixing drum 7;

[0044] Depend on Figure 3 The structure diagram of the control unit is shown, the control unit 1 comprises a control rod 8 and a support plate 9, the support plate 9 is provided with a mounting hole, the control rod 8 is mounted in the mounting hole, a first swing arm 10 is mounted under the control rod 8, one end of the first swing arm 10 is fixedly connected to the control rod 8, a connecting rod is mounted on the other end of the first swing arm 10, the connecting rod is fixedly connected to the first swing arm 10, a first rotating shaft 11 is connected to the lower end of the connecting rod, the first rotating shaft 11 is fixedly connected to the connecting rod, a first angle detection member is mounted on the first rotating shaft 11, and the first angle detection member is suitable for detecting the lateral rotation direction of the control rod 8;

[0045] A second swing arm 12 is installed under the joystick 8, one end of the second swing arm 12 is detachably connected to the joystick 8, a second rotating shaft 13 is installed at the other end of the second swing arm 12, a second angle detection member is installed on the second rotating shaft 13, and the second angle detection member is suitable for detecting the vertical rotation of the joystick 8;

[0046] The electric-controlled oil pump 3 comprises a first electric proportional valve 14 and a second electric proportional valve 15 , and the first electric proportional valve 14 and the second electric proportional valve 15 are suitable for controlling the rotation direction of the mixing drum 7 .

[0047] Furthermore, the joystick 8 includes a main rod 16, a sleeve 17 is provided under the main rod 16, external connecting rods 18 are installed at both ends of the sleeve 17, and two groups of internal connecting rods 19 are installed between the external connecting rod 18 and the main rod 16, and the two groups of internal connecting rods 19 form an acute angle with the external connecting rod 18;

[0048] The two groups of outer connecting rods 18 are fixedly connected to the upper end of the sleeve 17, and the sleeve 17 rotates in the mounting hole. A vertical rod 20 is installed between the two groups of inner connecting rods 19, and the lower end of the vertical rod 20 is suitable for passing through the sleeve 17 and rotatingly connected to the second swing arm 12.

[0049] Furthermore, the first swing arm 10 is in the shape of a teardrop, and is provided with a first transition hole and a second transition hole. The first transition hole is located under the sleeve 17, and the vertical rod 20 is suitable for passing through the first transition hole to be rotatably connected to the second swing arm 12, and the connecting rod is suitable for passing through the second transition hole to be fixedly connected to the first swing arm 10.

[0050] Furthermore, the connecting rod member includes a push rod 21 and a third swing arm 22, one end of the push rod 21 is detachably connected to the first swing arm 10, the other end of the push rod 21 is detachably connected to one end of the third swing arm 22, and the other end of the third swing arm 22 is fixedly connected to the first rotating shaft 11.

[0051] Further, the first angle detection member includes a fourth swing arm 23, a fixed rod 24 and a first angular displacement sensor 25, one end of the fourth swing arm 23 is fixedly connected to the first rotating shaft 11, the other end of the fourth swing arm 23 is connected to the fixed rod 24, and one end of the fixed rod 24 away from the fourth swing arm 23 is fixedly connected to the first angular displacement sensor 25, and the first angular displacement sensor 25 is suitable for detecting the direction of lateral rotation of the joystick 8;

[0052] The second angle detection includes a fifth swing arm 26, a second fixed rod 27, and a second angular displacement sensor 28. One end of the fifth swing arm 26 is fixedly connected to the second rotating shaft 13, and the other end of the fifth swing arm 26 is connected to the second fixed rod 27. One end of the second fixed rod 27 away from the fifth swing arm 26 is fixedly connected to the second angular displacement sensor 28. The second angular displacement sensor 28 is suitable for detecting the vertical rotation of the joystick 8.

[0053] The support plate 9 is a bent plate, and there are two groups of support plates 9. The two groups of support plates 9 are symmetrically designed. The second rotating shaft 13 rotates along the axis between the two groups of support plates 9. The joystick 8, the first swing arm 10, the push rod 21 and the third swing arm 22 are all provided in two groups and are symmetrical along the first rotating shaft 11.

[0054] Further, by Figure 2 As shown, the electronically controlled oil pump 3 includes an oil pump body 29, and the first electric proportional valve 14 and the second electric proportional valve 15 are both connected to the oil pump body 29. The first electric proportional valve 14 is suitable for receiving a positive signal from the controller 2 and the valve core moves to drive the oil pump body 29 to displace positively, and the second electric proportional valve 15 is suitable for receiving a negative signal from the controller 2 and the valve core moves to drive the oil pump body 29 to displace negatively.

[0055] Furthermore, the transmission unit 4 includes a motor 30, a coupling 31 is installed at the output end of the motor 30, a rotating shaft 32 is installed at the end of the coupling 31 away from the motor 30, the rotating shaft 32 is connected to the oil pump body 29, and the rotating shaft 32 is suitable for driving the rotation speed of the motor 30 to drive the rotation speed of the oil pump body 29.

[0056] A method for using an electric control system of an electric mixer truck comprises the following steps:

[0057] Step 1: Determine that the direction of the joystick 8 is horizontal left direction A, horizontal right direction B and vertical upward C, the joystick 8 is in the middle position as the initial state, the output displacement of the oil pump body 29 is 0, and the mixing drum 7 does not rotate;

[0058] Step 2, the joystick 8 rotates from the middle position to the first direction A, the sleeve 17 rotates to drive the first swing arm 10 to rotate, and then pulls the push rod 21 and drives the third swing arm 22 to rotate, and the third swing arm 22 rotates to drive the first angular displacement sensor 25 to turn;

[0059] The first angular displacement sensor 25 rotates from the middle position to the first direction A, and the first angular displacement sensor 25 outputs a positive analog signal to the controller 2. After receiving the positive analog signal, the controller 2 outputs a voltage to the first electric proportional valve, and the voltage is proportional to the analog signal. The valve core of the first electric proportional valve moves under the action of the voltage, and the stroke of the valve core is proportional to the voltage.

[0060] The forward displacement of the oil pump body 29 increases under the action of the valve core. The displacement is proportional to the stroke of the valve core. The increase in the displacement of the oil pump body 29 drives the speed of the motor 5 to increase, which in turn drives the speed of the reducer 6 to increase, so that the forward rotation speed of the mixing drum 7 increases.

[0061] Step 3, after the joystick 8 returns to the middle position from the first direction A, it rotates along the second direction B, driving the first swing arm 10 to rotate and push the push rod 21, thereby driving the third swing arm 22 to rotate and driving the fourth swing arm 23 to rotate, pushing the first angular displacement sensor 25;

[0062] The first angular displacement sensor 25 rotates from the middle position to the second direction B, and the first angular displacement sensor 25 outputs a negative analog signal. After receiving the negative analog signal, the controller 2 outputs a voltage to the second electric proportional valve, and the voltage is proportional to the analog signal.

[0063] The valve core of the second electric proportional valve moves under the action of the voltage, and the reverse displacement of the oil pump body 29 increases under the action of the valve core. The displacement is proportional to the stroke of the valve core. The increase in the displacement of the oil pump body 29 drives the speed of the motor 5 to increase, and drives the speed of the reducer 6 to increase, so that the reverse rotation speed of the mixing drum 7 increases;

[0064] Step 4, move the joystick 8 along the third direction C, rotate the two groups of inner connecting rods 19 to move the vertical rod 20 downward, thereby driving the second swing arm 12 to rotate and drive the second rotating shaft 13, so that the fifth swing arm 26 rotates to drive the second angular displacement sensor 28, and the second angular displacement sensor 28 outputs an analog signal to the controller 2. After the controller 2 receives the signal, the rotation speed is proportional to the analog signal size, and the rotation speed of the motor 30 increases.

[0065] A rotating shaft 32 is connected between the motor 30 and the oil pump body 29. The increase in the speed of the motor 30 drives the speed of the oil pump body 29 to increase, drives the speed of the motor 5 to increase, drives the speed of the reducer 6 to increase, and finally increases the rotation speed of the mixing drum 7.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An electric control system for an electric mixer truck, characterized in that: The invention comprises an operating unit (1), a controller (2), an electric oil pump (3) and a transmission unit (4), wherein the operating unit (1) is suitable for being installed at the rear of a mixer truck, the controller (2) is installed at the front of the truck, the electric oil pump (3) is a swash plate type axial piston variable displacement pump, the electric oil pump (3) and the transmission unit (4) are installed between the operating unit (1) and the controller (2), the controller (2) is suitable for controlling the displacement direction of the electric oil pump (3), a motor (5) is installed at the output end of the electric oil pump (3), the electric oil pump (3) is suitable for driving the motor (5), the motor (5) is a fixed displacement motor, a reducer (6) is installed on the side of the motor (5) facing away from the electric oil pump (3), the motor (5) is connected to the reducer (6), and the reducer (6) is suitable for driving the rotation of the mixer drum (7); The operating unit (1) comprises an operating rod (8) and a support plate (9), wherein a mounting hole is formed on the support plate (9), wherein the operating rod (8) is mounted in the mounting hole, wherein a first swing arm (10) is mounted below the operating rod (8), wherein one end of the first swing arm (10) is fixedly connected to the operating rod (8), wherein a connecting rod is mounted on the other end of the first swing arm (10), wherein the connecting rod is fixedly connected to the first swing arm (10), wherein a first rotating shaft (11) is connected to the connecting rod at the lower end, wherein the first rotating shaft (11) is fixedly connected to the connecting rod, wherein a first angle detecting member is mounted on the first rotating shaft (11), wherein the first angle detecting member is suitable for detecting the direction of lateral rotation of the operating rod (8); A second swing arm (12) is mounted under the joystick (8), one end of the second swing arm (12) is detachably connected to the joystick (8), a second rotation shaft (13) is mounted on the other end of the second swing arm (12), a second angle detection member is mounted on the second rotation shaft (13), and the second angle detection member is suitable for detecting vertical rotation of the joystick (8); The electrically controlled oil pump (3) comprises a first electrically proportional valve (14) and a second electrically proportional valve (15), wherein the first electrically proportional valve (14) and the second electrically proportional valve (15) are suitable for controlling the rotation direction of the mixing drum (7); The joystick (8) comprises a main rod (16), a sleeve (17) is arranged under the main rod (16), external connecting rods (18) are installed at both ends of the sleeve (17), two groups of internal connecting rods (19) are installed between the external connecting rod (18) and the main rod (16), and the two groups of internal connecting rods (19) form an acute angle with the external connecting rod (18); The two groups of outer connecting rods (18) are fixedly connected to the upper end of the sleeve (17), and the sleeve (17) rotates in the mounting hole. A vertical rod (20) is installed between the two groups of inner connecting rods (19), and the lower end of the vertical rod (20) is suitable for passing through the sleeve (17) and being rotatably connected to the second swing arm (12); The first swing arm (10) is in a teardrop shape, and is provided with a first transition hole and a second transition hole, the first transition hole being located below the sleeve (17), the vertical rod (20) being adapted to pass through the first transition hole to be rotationally connected to the second swing arm (12), and the connecting rod being adapted to pass through the second transition hole to be fixedly connected to the first swing arm (10); The connecting rod member comprises a push rod (21) and a third swing arm (22), one end of the push rod (21) is detachably connected to the first swing arm (10), the other end of the push rod (21) is detachably connected to one end of the third swing arm (22), and the other end of the third swing arm (22) is fixedly connected to the first rotating shaft (11); The support plate (9) is a bent plate, the support plates (9) are provided in two groups, the two groups of support plates (9) are symmetrically designed, the second rotation axis (13) rotates along the axis between the two groups of support plates (9), and the operating lever (8), the first swing arm (10), the push rod (21) and the third swing arm (22) are all provided in two groups and are symmetrical along the first rotation axis (11); The electronically controlled oil pump (3) comprises an oil pump body (29), the first electronic proportional valve (14) and the second electronic proportional valve (15) are both connected to the oil pump body (29), the first electronic proportional valve (14) is adapted to receive a positive signal from a controller (2) and to drive the oil pump body (29) to displace in a positive direction by means of valve core movement, and the second electronic proportional valve (15) is adapted to receive a negative signal from a controller (2) and to drive the oil pump body (29) to displace in a negative direction by means of valve core movement.

2. The electric control system of an electric mixer truck according to claim 1, characterized in that: The first angle detection member comprises a fourth swing arm (23), a fixed rod one (24) and a first angular displacement sensor (25); one end of the fourth swing arm (23) is fixedly connected to the first rotating shaft (11); the other end of the fourth swing arm (23) is connected to the fixed rod one (24); an end of the fixed rod one (24) away from the fourth swing arm (23) is fixedly connected to the first angular displacement sensor (25); the first angular displacement sensor (25) is suitable for detecting the direction of lateral rotation of the joystick (8); The second angle detection comprises a fifth swing arm (26), a second fixed rod (27) and a second angular displacement sensor (28); one end of the fifth swing arm (26) is fixedly connected to the second rotating shaft (13); the other end of the fifth swing arm (26) is connected to the second fixed rod (27); one end of the second fixed rod (27) away from the fifth swing arm (26) is fixedly connected to the second angular displacement sensor (28); the second angular displacement sensor (28) is suitable for detecting vertical rotation of the joystick (8).

3. The electric control system of an electric mixer truck according to claim 2, characterized in that: The transmission unit (4) comprises a motor (30), a coupling (31) being installed at the output end of the motor (30), a rotating shaft (32) being installed at one end of the coupling (31) away from the motor (30), the rotating shaft (32) being connected to the oil pump body (29), and the rotating shaft (32) being suitable for driving the rotation speed of the motor (30) to drive the rotation speed of the oil pump body (29).

4. A method for using the electric control system of an electric mixer truck as claimed in claim 3, characterized in that: The following steps are involved: Step 1: Determine that the direction of the joystick (8) is horizontal left direction A, horizontal right direction B, and vertical upward direction C. The joystick (8) is in the middle position as the initial state, the oil pump output displacement is 0, and the mixing drum (7) does not rotate; Step 2: The joystick (8) rotates from the middle position to the first direction A, the sleeve (17) rotates to drive the first swing arm (10) to rotate, and then pulls the push rod (21) to drive the third swing arm (22) to rotate, and the rotation of the third swing arm (22) drives the first angular displacement sensor (25) to turn; The first angular displacement sensor (25) rotates from a middle position to a first direction A, and the first angular displacement sensor (25) outputs a positive analog signal to the controller (2). After receiving the positive analog signal, the controller (2) outputs a voltage to the first electric proportional valve (14), the magnitude of the voltage being proportional to the analog signal. The valve core of the first electric proportional valve (14) moves under the action of the voltage, and the magnitude of the stroke of the valve core movement is proportional to the voltage. The forward displacement of the oil pump body (29) increases under the action of the valve core, and the displacement is proportional to the stroke of the valve core. The increase in the displacement of the oil pump body (29) drives the rotation speed of the motor (5) to increase, which in turn drives the rotation speed of the reducer (6) to increase, thereby increasing the forward rotation speed of the mixing drum (7). Step 3: After the joystick (8) returns to the middle position from the first direction A, it rotates in the second direction B, driving the first swing arm (10) to rotate and push the push rod (21), thereby driving the third swing arm (22) to rotate and driving the fourth swing arm (23) to rotate, thereby pushing the first angular displacement sensor (25); The first angular displacement sensor (25) rotates from the middle position to the second direction B, and the first angular displacement sensor (25) outputs a negative analog signal. After receiving the negative analog signal, the controller (2) outputs a voltage to the second electric proportional valve (15), and the voltage is proportional to the analog signal. The valve core of the second electric proportional valve (15) moves under the action of the voltage, and the reverse displacement of the oil pump body (29) increases under the action of the valve core. The increase in the displacement of the oil pump body (29) drives the rotation speed of the motor (5) to increase, and drives the rotation speed of the reducer (6) to increase, so that the reverse rotation speed of the mixing drum (7) increases; Step 4: Move the joystick (8) along the third direction C, rotate the two sets of inner connecting rods (19) to move the vertical rod (20) downward, thereby driving the second swing arm (12) to rotate and drive the second rotating shaft (13), so that the fifth swing arm (26) rotates to drive the second angular displacement sensor (28), and the second angular displacement sensor (28) outputs an analog signal to the controller (2). After the controller (2) receives the signal, the rotation speed is proportional to the analog signal, and the rotation speed of the motor (30) increases; A rotating shaft (32) is connected between the motor (30) and the oil pump body (29). When the speed of the motor (30) increases, the speed of the oil pump body (29) increases, which in turn increases the speed of the motor (5) and the speed of the reducer (6), thereby ultimately increasing the rotation speed of the mixing drum (7).

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