A multifunctional electric four-wheel drive working platform

Abstract

The present invention relates to a multifunctional electric four-wheel drive work platform, wherein a three-point suspension mechanism is fixed at the rear of the platform body, and a connecting arm fixing platform and a seat are fixed at the upper end; a hydraulic oil cylinder is installed under the seat and connected to the three-point suspension mechanism; a battery pack is connected to a remote control device receiver and a controller, the controller is connected to a motor, and the motor is connected to a right-angle gearbox; the right-angle gearbox is connected to an electromagnetic clutch gear pump, and the electromagnetic clutch gear pump is connected to left and right steering clutch sub-pumps; the right-angle gearbox is also connected to a left unilateral locking steering gearbox, and the left unilateral locking steering gearbox is connected to a reverse forward gear conversion gearbox; the reverse forward gear conversion gearbox is connected to a right unilateral locking steering gearbox; the left and right unilateral locking steering gearboxes are respectively installed with a right driving sprocket and a left driving sprocket; the left and right driving sprockets are respectively connected to a driven sprocket and then connected to a walking wheel. The machine model of the present invention has diversified functions, convenient and fast turning, and can meet different field operation requirements.

Description

Technical Field

[0001] The invention relates to the field of electric machinery, in particular to a multifunctional electric four-wheel drive working platform. Background Art

[0002] With the continuous development of mechanization, the mechanical field has paid more and more attention to environmentally friendly machinery. Therefore, in order to meet the needs of mechanization development, electric agricultural machinery has appeared on the market, which effectively avoids the air pollution caused by large fuel machinery and meets the requirements of the development of my country's environmental protection industry. At present, due to the lack of research on the laws of field operations, the overall structure of electric operating machinery on the market still has the following problems: First, the machine function is relatively single, which cannot meet the complex operation requirements of field film laying, sowing, spreading fertilizer, spraying, forking grass, shoveling soil, grabbing stacks, etc., making the machine adaptability poor; second, when the field operation process is for small fields, hilly fields and scattered fields, it is necessary to move forward and backward many times to turn at the ridge position. Not only is the turning process difficult, but the ground wheel also affects the operation quality at the ridge after multiple rolling; third, the field operation process is mainly carried out by manual operation, and when the field operation is large, it will affect the health of the operators. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a multifunctional electric four-wheel drive working platform, which solves the problems of the existing electric models with single functions, difficult turning and harm to human health. The platform can realize remote control operation, translational steering and on-the-spot steering functions, and can also connect different working machines through the rear traction suspension to realize different operations in the field. The fork head, shovel head and grab head are connected through the front hydraulic lifting mechanism to realize operations such as forking grass, shoveling head and stacking.

[0004] In order to solve the above problems, a multifunctional electric four-wheel drive work platform described in the present invention includes a platform body, a battery pack arranged in the platform body, a remote control device receiver, a motor, a right-angle gearbox, a left-side single-side locking steering gearbox, a reverse and forward gear conversion gearbox, a right-side single-side locking steering gearbox and a walking wheel, characterized in that: a three-point suspension mechanism is fixed to the rear end of the platform body, and a connecting arm fixing platform is fixed to the front position of the upper end, and a seat is fixed to the rear position of the upper end; a hydraulic cylinder is installed under the seat, and the end of the hydraulic cylinder is connected to the three-point suspension mechanism through a lifting connecting rod; the battery pack is connected to a remote control device receiver and a controller through wires, and the remote control device receiver and the controller are connected to each other; the controller is connected to the motor control, and the power output wheel of the motor is connected to the power input wheel of the right-angle gearbox through belt I; the output wheel of the right-angle gearbox is connected to an electromagnetic clutch gear pump through belt II, and the electromagnetic clutch gear pump is connected to the right-angle gearbox through an oil pipe The left and right steering clutch sub-cylinders are connected with a steering machine; the output shaft end of the right-angle gearbox is connected with the left unilateral locking steering gearbox, and the left unilateral locking steering gearbox is connected with a shaft on one side of the reverse forward gear conversion gearbox, and the reverse forward gear conversion gearbox is equipped with a shift operating lever; the other side shaft of the reverse forward gear conversion gearbox is connected with the right unilateral locking steering gearbox; the left unilateral locking steering gearbox and the right unilateral locking steering gearbox are respectively equipped with a left rotation operating lever and a right rotation operating lever, and the output shaft end of the left unilateral locking steering gearbox is equipped with a group of right driving sprockets arranged side by side, and the output shaft end of the right unilateral locking steering gearbox is equipped with a group of left driving sprockets arranged side by side; the left driving sprocket and the right driving sprocket are respectively connected with the front and rear driven sprockets through two transmission chains, and the inner rotating shafts of the driven sprockets behind them are respectively provided with brake devices, and the outer rotating shaft ends are respectively connected with the walking wheels.

[0005] The controller is connected to the hydraulic cylinder, electromagnetic clutch gear pump, left-side single-side locking steering gearbox, reverse and forward gear conversion gearbox, and right-side single-side locking steering gearbox through multi-way electromagnetic control, and realizes remote control operation after receiving remote control commands through the remote control device receiver.

[0006] The controller is connected with a control pedal, and the control pedal is arranged behind the connecting arm fixing platform.

[0007] The ends of the suspension rods of the three-point suspension mechanism are respectively connected to a film-laying mechanism, a sowing mechanism, a pesticide spraying mechanism, a fertilizer spreading mechanism, and a weeding mechanism through a mounting frame. By replacing different agricultural implements, a multifunctional operating machine including an electric film-laying machine, an electric sowing machine, an electric pesticide spraying machine, an electric fertilizer spreading machine, and an electric weeding machine can be assembled.

[0008] The upper end of the connecting arm fixing platform is connected to the loading and unloading linkage arm through a fixing pin, and the large arm of the loading and unloading linkage arm is connected to a telescopic cylinder near the end, and the telescopic cylinder is installed in the middle of the connecting arm fixing platform and is connected to the controller through a solenoid valve; the ends of the loading and unloading linkage arm are respectively connected to a fork head part, a shovel head part, and a grab head part, and by replacing different operating loading and unloading parts, it can be assembled into a multifunctional operating model of an electric forklift, an electric shovel truck, and an electric grass grabber.

[0009] The steering machine is connected with a steering wheel through a steering connecting rod, and the steering wheel is installed on a connecting arm fixing platform.

[0010] A shift operating handle is installed at the end of the shift operating rod, and the shift operating handle has three operating gear positions: neutral gear, left steering gear and right steering gear.

[0011] The left rotation operating rod and the right rotation operating rod are equipped with a rotation operating handle through a conversion connecting rod. The rotation operating handle has three gear positions: neutral gear, left rotation gear and right rotation gear.

[0012] The connecting arm fixing platform is also provided with an instrument panel, a horn and a lighting lamp, which are respectively connected to a controller through control lines.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] (1) The present invention uses a battery pack to connect the controller and the remote control receiver, connects the motor through the controller, and uses the remote control to send commands to the remote control receiver to remotely control the solenoid valves of the motor, hydraulic cylinder, electromagnetic clutch gear pump and other units, thereby realizing remote control operation and avoiding the problem of affecting the health of the operator due to working environment problems.

[0015] (2) The present invention adopts the principle of slip steering. Through the steering of the steering gear, the left and right steering clutch sub-pumps are controlled to drive the electromagnetic clutch gear pump, and the left-side single-side locked steering gearbox and the right-side single-side locked steering gearbox are separated, so that the working platform can be turned during walking, making the turning process in the field operation process convenient and quick.

[0016] (3) The present invention controls the rotating operating handle to operate the reverse and forward gear conversion gear box by the left rotating operating lever and the right rotating operating lever, so that the connecting shaft on one side drives the left side single-sided locked steering gearbox to rotate forward, and the connecting shaft on the other side drives the right side single-sided locked steering gearbox to rotate reversely. The left side single-sided locked steering gearbox and the right side single-sided locked steering gearbox respectively cause the right side driving sprocket and the right side driving sprocket to rotate in opposite directions, thereby realizing the in-situ rotation and steering of the working platform, making it more convenient to walk on the field ridge.

[0017] (4) The hydraulic cylinder and telescopic cylinder used in the present invention are connected to the controller through solenoid valves and control lines respectively, and the controller is connected to the remote controller to realize manual hydraulic control and remote control hydraulic control.

[0018] (5) Since the present invention has a three-point suspension mechanism at the rear end of the platform body, agricultural implements with different functions can be replaced and installed according to different operation requirements, thereby achieving diversified machine functions and meeting the complex field operation environment.

[0019] (6) The present invention has a connecting arm fixing platform fixed on the upper end of the platform body, and the loading and unloading linkage arm and the telescopic cylinder are installed through the connecting arm fixing platform. The loading and unloading linkage arm can be raised and lowered. According to different operation requirements, a fork head, a shovel head or a grab head is installed at the end of the loading and unloading linkage arm to realize different operation functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a side view structural schematic diagram of the present invention;

[0022] Figure 2 It is a top view of the internal transmission structure of the platform body of the present invention;

[0023] Figure 3 It is a schematic diagram of the assembly structure of the electric film laying machine of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the electric seed drill of the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the electric sprayer of the present invention;

[0026] Figure 6 This is a schematic diagram of the assembly structure of the electric fertilizer spreader of the present invention;

[0027] Figure 7 This is a schematic diagram of the assembly structure of the electric weeder of the present invention;

[0028] Figure 8 It is a schematic diagram of the assembly structure of the electric forklift of the present invention;

[0029] Fig. 9 This is a schematic diagram of the assembly structure of the electric grass grabber of the present invention;

[0030] Fig.10 It is a schematic diagram of the assembly structure of the electric forklift of the present invention.

[0031] In the figure: 1. Platform body, 101. Battery pack, 102. Remote control receiver, 103. Controller, 104. Motor, 105. Right angle gearbox, 106. Electromagnetic clutch gear pump, 107. Left and right steering clutch sub-pumps, 108. Steering gear, 109. Left unilateral locking steering gearbox, 110. Reverse and forward gear conversion gearbox, 111. Right unilateral locking steering gearbox, 112. Left rotation operating lever, 113. Shift operating lever, 114. Right rotation operating lever, 115. Right driving sprocket, 116. Left driving chain Wheel, 117. Driven sprocket, 118. Braking device, 119. Travel wheel, 2. Three-point suspension mechanism, 3. Connecting arm fixing platform, 4. Seat, 5. Hydraulic cylinder, 6. Control pedal, 7. Film laying mechanism, 8. Seeding mechanism, 9. Spraying mechanism, 10. Fertilizer spreading mechanism, 11. Weeding mechanism, 12. Loading and unloading linkage arm, 13. Telescopic cylinder, 14. Fork head, 15. Shovel head, 16. Grabbing head, 17. Steering wheel, 18. Shift operating handle, 19. Rotating operating handle, 20. Instrument panel, 21. Horn, 22. Lighting. DETAILED DESCRIPTION

[0032] like Figure 1 , 2As shown, a multifunctional electric four-wheel drive work platform described in the present invention includes a platform body 1, a battery pack 101 arranged in the platform body 1, a remote control device receiver 102, a motor 104, a right-angle gearbox 105, a left-side single-side locking steering gearbox 109, a reverse and forward gear conversion gearbox 110, a right-side single-side locking steering gearbox 111 and a walking wheel 119. A three-point suspension mechanism 2 is fixed to the rear end of the platform body 1, and a connecting arm fixing platform 3 is fixed to the front position of the upper end, and a seat 4 is fixed to the rear position of the upper end; an instrument panel 20, a speaker 21, and a lighting lamp 22 are also arranged on the connecting arm fixing platform 3, and are respectively connected to the controller 103 through control lines; a hydraulic The hydraulic cylinder 5, the end of which is connected to the three-point suspension mechanism 2 through a lifting connecting rod; the battery pack 101 is connected to a remote control receiver 102 and a controller 103 through wires, and the remote control receiver 102 and the controller 103 are connected to each other; the controller 103 is connected to the hydraulic cylinder 5, the electromagnetic clutch gear pump 106, the left-side single-side locking steering gearbox 109, the reverse and forward gear conversion gearbox 110, and the right-side single-side locking steering gearbox 111 through multi-way electromagnetic control, and the remote control operation is realized after the remote control receiver 102 receives the remote control command; the controller 103 is connected to a control pedal 6, which is arranged behind the connecting arm fixing platform 3; the controller 103 is connected to the motor 1 04 control connection, the power output wheel of the motor 104 is connected to the power input wheel of the right-angle gear box 105 through a belt I; the output wheel of the right-angle gear box 105 is connected to an electromagnetic clutch gear pump 106 through a belt II, and the electromagnetic clutch gear pump 106 is connected to the left and right steering clutch sub-pumps 107 through an oil pipe, and the left and right steering clutch sub-pumps 107 are connected to a steering machine 108; the steering machine 108 is connected to a steering wheel 17 through a steering connecting rod, and the steering wheel 17 is installed on a connecting arm fixing platform 3; the output shaft end of the right-angle gear box 105 is connected to a left-side single-side locking steering gearbox 109, and the left-side single-side locking steering gearbox 109 is connected to a side shaft of a reverse and forward gear conversion gearbox 110 The reverse and forward gear conversion gearbox 110 is connected, and a shift operating rod 113 is installed on the reverse and forward gear conversion gearbox 110; a shift operating handle 18 is installed at the end of the shift operating rod 113, and the shift operating handle 18 has three operating gears: neutral, left steering gear and right steering gear; the other side of the reverse and forward gear conversion gearbox 110 is connected to the right side unilateral locking steering gearbox 111; the left unilateral locking steering gearbox 109 and the right unilateral locking steering gearbox 111 are respectively installed with a left rotation operating rod 112 and a right rotation operating rod 114, and the left rotation operating rod 112 and the right rotation operating rod 114 are installed with a rotation operating handle 19 through a conversion connecting rod, and the rotation operating handle 19 has three gears: neutral, left rotation gear and right rotation gear;A set of right driving sprockets 115 arranged side by side are installed at the output shaft end of the left unilateral locking steering gearbox 109, and a set of left driving sprockets 116 arranged side by side are installed at the output shaft end of the right unilateral locking steering gearbox 111; the left driving sprocket 116 and the right driving sprocket 115 are respectively connected to the front and rear driven sprockets 117 through two transmission chains, and the inner rotating shaft of the rear driven sprocket 117 is respectively provided with a brake device 118, and the outer rotating shaft end is respectively connected to the walking wheel 119.;

[0033] like Figure 3 , 4 As shown in Figures 5, 6 and 7, the ends of the suspension rods of the three-point suspension mechanism 2 are respectively connected to the film-laying mechanism 7, the sowing mechanism 8, the spraying mechanism 9, the fertilizer spreading mechanism 10 and the weeding mechanism 11 through the mounting frame. By replacing different agricultural implements, the multifunctional operating machine types such as an electric film-laying machine, an electric sowing machine, an electric spraying machine, an electric fertilizer spreading machine and an electric weeding machine can be assembled.

[0034] like Figure 8 , 9 As shown in 10, the upper end of the connecting arm fixing platform 3 is connected to the loading and unloading linkage arm 12 through a fixing pin, and the large arm of the loading and unloading linkage arm 12 is connected to a telescopic cylinder 13 near the end, and the telescopic cylinder 13 is installed in the middle of the connecting arm fixing platform 3, and is connected to the controller 103 through a solenoid valve; the ends of the loading and unloading linkage arm 12 are respectively connected to a fork head part 14, a shovel head part 15, and a grabbing head part 16, and by replacing different operating loading and unloading parts, it can be assembled into a multifunctional operating model of an electric forklift, an electric shovel truck, and an electric grass grabber.

[0035] The working principle of the present invention can be divided into the walking system principle, the steering system principle, the hydraulic system principle, and the remote control unmanned driving system principle. The walking system principle is as follows: the operator controls the motor 104 through the controller 103 by operating the control pedal 6 and the shift operating lever 113, and the kinetic energy is transmitted through the right-angle gearbox 105. The shift operating handle 18 and the rotating operating handle 19 are used to respectively lock the left side of the steering gearbox 109, the forward and reverse gear conversion gearbox 110, and the right side of the reverse gear conversion gearbox 110 through the shift operating lever 113, the left rotating operating lever 112, and the right rotating operating lever 114. The unilaterally locked steering gearbox 110 is adjusted to the neutral gear position, so that the power is transmitted to the left driving sprocket 116 and the right driving sprocket 115 respectively, and then the left and right front and rear driven sprockets 117 are driven to rotate through the chain, and the walking wheel 119 is driven to move, so as to realize four-wheel drive walking; wherein the steering system principle is: when the self-propelled process needs to turn, the steering machine 108 is driven to rotate through the steering wheel 17, and the left and right steering clutch sub-pumps 107 are controlled to drive the electromagnetic clutch gear pump 106 to work, and according to the steering direction, the left unilaterally locked steering gearbox 109 or the right The unilaterally locked steering gearbox 111 is locked to realize the steering function of the platform body during walking; when it is necessary to rotate and turn in situ, the reverse gear mechanism of the left and right output shafts of the forward and reverse gear conversion gearbox 110 is operated by controlling the shift operating handle 18, so that the output shaft on one side rotates in the reverse direction and the output shaft on the other side rotates forward, and the reverse power is output to the right driving sprocket 115 and the left driving sprocket 116 through the left unilaterally locked steering gearbox 109 and the right unilaterally locked steering gearbox 111 respectively, so as to realize the rotation of the walking wheel in situ; wherein the principle of the hydraulic system is: through the battery pack 10 1 connects the hydraulic cylinder 5 and the telescopic cylinder 13, controls the solenoid valve to open through the controller 103, and makes the oil pumps of the hydraulic cylinder 5 and the telescopic cylinder 13 work, so that they can perform lifting and retracting operations; wherein, the principle of the remote control unmanned driving system is: after sending out a command through the remote controller, the remote control device receiver 102 receives the command and controls the solenoid valves of the motor 104, the hydraulic cylinder 5 and the left unilateral locking steering gearbox 109, the reverse forward gear conversion gearbox 110, the right unilateral locking steering gearbox 111 and other units through the controller 103 to work, so as to realize various operation actions during driving.

[0036] Example 1 Figure 3 , 4, 5, 6, 7, according to the needs of field operations, the film laying mechanism 7, the sowing mechanism 8, the spraying mechanism 9, the fertilizer spreading mechanism 10, and the weeding mechanism 11 are connected to the three-point suspension mechanism 2 through the mounting frame respectively. After the hydraulic cylinder 5 is connected to the three-point suspension mechanism 2 through the lifting connecting rod, the assembly work of the electric film laying machine, the electric sowing machine, the electric spraying machine, the electric fertilizer spreading machine, and the electric herbicide is completed. When working, the operator controls the motor 104 to work through the controller 103 by operating the control pedal 6 and the shift operating handle 18, and the kinetic energy is transmitted through the right-angle gear box 105, and after passing through the left-side unilateral locking steering gearbox 109, the reverse and forward gear conversion gearbox 110, and the right-side unilateral locking steering gearbox 111, the power is transmitted to the left driving sprocket 116 and the right driving sprocket 115 respectively, driving the line The walking wheel 119 moves to realize four-wheel drive walking; and the hydraulic cylinder 5 is used to lower the assembled different agricultural working mechanisms for operation; when steering is required, the steering machine 108 is driven to rotate through the steering wheel 17, and the left and right steering clutch sub-pumps 107 are controlled to drive the electromagnetic clutch gear pump 106 to work, and according to the steering direction, the left unilateral locking steering gearbox 109 or the right unilateral locking steering gearbox 111 is controlled to lock, so as to realize steering during the operation; at the same time, according to the working environment, a command can be issued through the remote control, and after the remote control device receiver 102 receives the command, the electromagnetic valves of the motor 104, the hydraulic cylinder 5 and the left unilateral locking steering gearbox 109, the reverse and forward gear conversion gearbox 110, and the right unilateral locking steering gearbox 111 are controlled through the controller 103 to realize unmanned operation.

[0037] Example 2 Figure 8 , 9, 10, according to the needs of mechanized operations, the loading and unloading linkage arm 12 is fixed on the connecting arm fixing platform 3, and then the telescopic oil cylinder 13 is installed on the loading and unloading linkage arm 12, and the telescopic oil cylinder 13 is connected to the controller 103, and then the fork head 14, the shovel head 15, and the grab head 16 are connected to the end of the loading and unloading linkage arm 12 according to the needs, that is, the assembly of the electric forklift, the electric shovel or the electric grass grabber is completed. When the assembly is completed and the work is in progress, the controller 103 is first used to control the telescopic oil cylinder 13 to raise the loading and unloading linkage arm 12 for walking. During the walking process, the operator controls the motor 104 to work through the controller 103 by operating the control pedal 6 and the gear shift operating handle 18, and the kinetic energy is transmitted through the right-angle gear box 105, and the left side After the unilaterally locked steering gearbox 109, the forward and reverse gear conversion gearbox 110, and the right unilaterally locked steering gearbox 111, the power is transmitted to the left driving sprocket 116 and the right driving sprocket 115 respectively, driving the walking wheel 119 to move and realize four-wheel drive walking; when the walking operation position is reached, the controller 103 controls the telescopic cylinder 13 to lower the working parts installed on the loading and unloading linkage arm 12 to start the operation. When the operation process requires steering, the steering machine 108 is driven to rotate through the steering wheel 17, and the left and right steering clutch sub-pumps 107 are controlled to drive the electromagnetic clutch gear pump 106 to work, and according to the steering direction, the left unilaterally locked steering gearbox 109 or the right unilaterally locked steering gearbox 111 is controlled to lock, and the operation steering is performed.

Claims

1. A multifunctional electric four-wheel drive work platform, comprising a platform body (1), a battery pack (101) arranged in the platform body (1), a remote control device receiver (102), a motor (104), a right-angle gearbox (105), a left-side single-side locking steering gearbox (109), a reverse and forward gear conversion gearbox (110), a right-side single-side locking steering gearbox (111) and a travel wheel (119), characterized in that: A three-point suspension mechanism (2) is fixed to the rear end of the platform body (1), and a connecting arm fixing platform (3) is fixed to the front position of the upper end, and a seat (4) is fixed to the rear position of the upper end; a hydraulic cylinder (5) is installed below the seat (4), and the end of the hydraulic cylinder (5) is connected to the three-point suspension mechanism (2) through a lifting connecting rod; the battery pack (101) is respectively connected to a remote control device receiver (102) and a controller (103) through wires, and the remote control device receiver (102) and the controller (103) are connected to each other; the controller (10 3) is controlled and connected with the motor (104), the power output wheel of the motor (104) is connected to the power input wheel of the right-angle gear box (105) through a belt I; the output wheel of the right-angle gear box (105) is connected to an electromagnetic clutch gear pump (106) through a belt II, the electromagnetic clutch gear pump (106) is connected to the left and right steering clutch sub-pumps (107) through an oil pipe, and the left and right steering clutch sub-pumps (107) are connected to a steering gear (108); the output shaft end of the right-angle gear box (105) is connected to the left single-side locking steering gearbox ( The left unilateral locking steering gearbox (109) is connected to the reverse and forward gear conversion gearbox (110) by a shaft connection, and a gear shift operating lever (113) is installed on the reverse and forward gear conversion gearbox (110); the other side of the reverse and forward gear conversion gearbox (110) is connected to the right unilateral locking steering gearbox (111) by a shaft connection; the left unilateral locking steering gearbox (109) and the right unilateral locking steering gearbox (111) are respectively installed with a left rotation operating lever (112) and a right rotation operating lever (114), and ... The output shaft end of the dead steering gearbox (109) is equipped with a group of right driving sprockets (115) arranged side by side, and the output shaft end of the right unilateral dead steering gearbox (111) is equipped with a group of left driving sprockets (116) arranged side by side; the left driving sprocket (116) and the right driving sprocket (115) are respectively connected to the front and rear driven sprockets (117) through two transmission chains, and the inner rotating shaft of the rear driven sprocket (117) is respectively provided with a brake device (118), and the outer rotating shaft end is respectively connected to the walking wheel (119).

2. A multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The controller (103) is connected to the hydraulic cylinder (5), the electromagnetic clutch gear pump (106), the left-side single-side locking steering gearbox (109), the forward and reverse gear conversion gearbox (110), and the right-side single-side locking steering gearbox (111) through multi-channel electromagnetic control, and realizes remote control operation after receiving remote control commands through the remote control device receiver (102).

3. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The controller (103) is connected to a control pedal (6), and the control pedal (6) is arranged behind the connecting arm fixing platform (3).

4. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The ends of the suspension rods of the three-point suspension mechanism (2) are respectively connected to a film-laying mechanism (7), a sowing mechanism (8), a pesticide spraying mechanism (9), a fertilizer spreading mechanism (10), and a weeding mechanism (11) through a mounting frame, and a multifunctional operating machine model of an electric film-laying machine, an electric sowing machine, an electric pesticide spraying machine, an electric fertilizer spreading machine, and an electric weeding machine can be assembled by replacing different agricultural tools.

5. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The upper end of the connecting arm fixing platform (3) is connected to a loading and unloading linkage arm (12) through a fixing pin, and a telescopic oil cylinder (13) is connected to the upper arm of the loading and unloading linkage arm (12) near the end, and the telescopic oil cylinder (13) is installed in the middle of the connecting arm fixing platform (3) and is connected to a controller (103) through a solenoid valve; the ends of the loading and unloading linkage arm (12) are respectively connected to a fork head part (14), a shovel head part (15), and a grab head part (16), and by replacing different operation loading and unloading parts, a multifunctional operation machine model such as an electric forklift, an electric shovel truck, and an electric grass grabber can be assembled.

6. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The steering machine (108) is connected to a steering wheel (17) via a steering link, and the steering wheel (17) is mounted on a connecting arm fixing platform (3).

7. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: A gear shift operating handle (18) is installed at the end of the gear shift operating rod (113), and the gear shift operating handle (18) has three operating gear positions: neutral gear, left steering gear and right steering gear.

8. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The left rotation operating rod (112) and the right rotation operating rod (114) are provided with a rotation operating handle (19) via a conversion link. The rotation operating handle (19) has three gear positions: a neutral gear, a left rotation gear and a right rotation gear.

9. The multifunctional electric four-wheel drive working platform according to claim 1, characterized in that: The connecting arm fixing platform (3) is also provided with an instrument panel (20), a speaker (21), and a lighting lamp (22), and each of them is connected to a controller (103) via a control line.

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