Multifunctional operating vehicle with annular track

Abstract

The utility model belongs to the technical field of agricultural machinery, and particularly relates to an annular track multifunctional operation vehicle which comprises a vehicle seat chassis, a bearing vehicle frame, a motor, a driving wheel, a driven wheel and an auxiliary wheel, and the driving wheel, the driven wheel and the auxiliary wheel are in contact with a track. A driving wheel supporting assembly and a driven wheel supporting assembly above the driving wheels and the driven wheels are arranged in the bearing frame and connected to the bottom end of the saddle chassis, the driving wheels are symmetrically installed at the two ends of the driving wheel supporting assembly, auxiliary wheels are further installed on the driving wheel supporting assembly, and the driven wheels are symmetrically installed at the two ends of the driven wheel supporting assembly. The motor is connected with half shaft flanges on the two sides of the driving wheel through a gearbox. According to the utility model, the labor intensity of workers is reduced, and the safety of the workers is ensured while the efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, in particular to a multifunctional working vehicle on a ring track. Background Art

[0002] With the rapid development of my country's agriculture and the improvement of people's pursuit of high-quality life, the production demand for greenhouses has increased year by year. Although the overall area of ​​the greenhouse is large, the actual working area of ​​the personnel is limited. During the growth of crops, the spacing between ridges will gradually decrease, especially in the planting management and detection links in the greenhouse. The narrow working space will make most agricultural machinery difficult to move and unable to operate. At this time, the advantages of small agricultural machinery can be reflected. The current method of applying pesticides to crops is relatively backward. When spraying pesticides, it is not only time-consuming and laborious, affecting the efficiency of spraying pesticides, but also has a high labor intensity. The utilization rate of pesticides is low and the application of pesticides is uneven, and even safety problems may be caused to operators. Most of the existing greenhouse operation vehicles use a single track in the ridge ditch, operate in a straight line reciprocating manner, and have a low level of intelligence. Therefore, in order to further improve the operating efficiency and the utilization rate of pesticides, reduce the harm of pesticides to operators, and stably complete the operation tasks in the greenhouse, an intelligent circular track multifunctional operation vehicle is needed. Utility Model Content

[0003] In view of the above-mentioned technical problems, the utility model provides a circular track multifunctional working vehicle, which can reduce the labor intensity of operators, improve the overall working efficiency, and ensure the safety of operators.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] The utility model discloses a multifunctional working vehicle on a circular track, comprising a vehicle seat chassis, a bearing frame, a motor, a driving wheel, a driven wheel and an auxiliary wheel in contact with the track, wherein the track is arranged on the surface of the working vehicle running route, the vehicle seat chassis is arranged on the bearing frame, a supporting frame of the bearing frame extends out of the vehicle seat chassis, a driving wheel supporting assembly above the driving wheel and the driven wheel, and a driven wheel supporting assembly are arranged between the bearing frame and connected to the bottom end of the vehicle seat chassis, the driving wheel is symmetrically arranged at both ends of a half-axle flange of the driving wheel supporting assembly, a driving end auxiliary wheel shaft is arranged on the short axis of the half-axle flange through a driving bridge connecting piece, an auxiliary wheel is arranged on the driving end auxiliary wheel shaft, the driven wheel is symmetrically arranged at both ends of a driven double wheel shaft of the driven wheel supporting assembly, and the motor is connected to the half-axle flanges on both sides of the driving wheel through a gear box.

[0006] Furthermore, the driving wheel support assembly includes a half-axle flange, a driving axle connector, a driving wheel universal rotary shaft and a driving wheel bracket connector, the driving axle connector is symmetrically connected to the half-axle flange at both ends, and the driving wheel bracket connector is connected to the driving axle connector via a driving wheel universal rotary shaft.

[0007] Furthermore, the active axle connecting member is symmetrically arranged at both ends of the connecting plate, wherein the connecting member is sleeved on the short shaft of the half-axle flange, the protruding end is connected to the active end secondary wheel shaft, and a tension spring is connected to the protruding end of the connecting member and the active end secondary wheel shaft.

[0008] Furthermore, the driving wheel bracket connecting piece has inclined surfaces on both sides of one end, forming a trapezoidal frame structure with a cross-section. A through hole is opened in the middle of this end, on which a bearing for connecting the universal rotating shaft of the driving wheel is arranged, and the other end is a plate-shaped structure that cooperates with the seat chassis, on which there is a mounting hole that cooperates with the seat chassis.

[0009] Furthermore, the driven wheel support assembly includes a driven bridge connecting member, a universal base, a driven wheel universal rotating shaft, a U-shaped joint, a joint limiter and a driven wheel bracket connecting member. The driven bridge connecting member is composed of connecting ear plates arranged at both ends of a top plate, and the driven double wheel axle of the driven wheel is connected through the connecting ear plates. A through hole is opened on the top plate and cooperates with the driven wheel universal rotating shaft to pass through; one end of the driven wheel universal rotating shaft extends into the through hole of the driven bridge connecting member, and the other end passes through the connecting sleeve of the universal base and is movably connected to the U-shaped joint. The U-shaped joint is rotatably connected to bent end plates at both ends of the connecting sleeve, and is connected to the driven wheel bracket connecting member through two bent end plates. A joint limiter is arranged on the top of the connecting sleeve and leaves a gap with the driven wheel bracket connecting member.

[0010] Furthermore, the movable limiter is composed of two support plates arranged in parallel, one end of the support plate has an arc groove that cooperates with the outer surface of the connecting sleeve, and is installed on the connecting sleeve through the arc groove. The other end face is parallel to the bottom end face of the driven wheel bracket connecting piece, and the installation distance between the two end faces is 1.5mm±0.2mm.

[0011] Furthermore, the driven wheel consists of a double wheel, which is installed on a driven double wheel axle through a driven wheel double wheel frame, and a front axle limiter is installed on the driven double wheel axle between the driven bridge connecting member and the driven wheel double wheel frame. The front axle limiter is a bent plate, one end of which is provided with a through hole for cooperating with the driven double wheel axle, and the other end of the bent plate is placed above the top plate of the driven wheel double wheel frame.

[0012] Furthermore, the distance between the bending plate and the top plate of the driven wheel double wheel frame is 4mm±0.2mm.

[0013] Furthermore, a spraying device is also installed on the seat chassis, and the spraying device includes a spraying frame, and the spraying frame includes three track frames that are slidably connected in sequence, one of which is a fixed track frame, which is fixed to the seat chassis by a fixing part, and each track frame is composed of two vertical guide rails arranged in parallel, and a cross bar is arranged at the top of the fixed track frame and the tops and bottoms of the other two track frames, and pulleys are arranged thereon, one end of the steel wire rope is connected to the pulley at the top of the fixed track frame, and the other end is connected to the rope winding member arranged at the output shaft end of the motor after passing through the bottom pulley of the second track frame, the top pulley of the second track frame, the bottom pulley of the third track frame, and the top pulley of the third track frame in sequence, and then the rope winding member arranged at the output shaft end of the motor is connected, and the spraying pipes are arranged on both sides of each track frame, and a nozzle is arranged on the spraying pipes on both sides of each track frame, and the nozzles on each side form an upper, middle and lower arrangement when the track frame rises and unfolds.

[0014] Furthermore, the nozzle of the third track frame is located at the top thereof, and the nozzle spacing on each side is 0.6m±0.2mm when the track frame rises and unfolds.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model rationally designs a circular track multifunctional operation vehicle according to the characteristics and conditions of the greenhouse. It lays a circular track for operation on the greenhouse ground, and places a bearing seat chassis with track wheels on the upper surface of the circular track, on which the spraying device is placed to spray crops at different heights on both sides. The operator can also place other mechanical equipment required for operation on the curved flatbed trolley, and complete the required operation tasks by towing the curved flatbed trolley by the track operation vehicle; this operation method greatly reduces the labor intensity of the operator, improves the overall operation efficiency, and further ensures the safety of the operator.

[0017] 2. The circular track multifunctional working vehicle of the utility model has a simple structure, low maintenance cost, convenient disassembly, and can effectively complete the working tasks.

[0018] 3. The utility model has a compact structure and can be used in narrow spaces in greenhouses. It is easy to operate and highly practical, thus improving the intelligence level of vehicles used in greenhouses.

[0019] 4. The utility model application can improve the intelligent operation of greenhouses, and can also provide corresponding research assistance for agricultural machinery, promote the development of agricultural machinery, and advance the pace of the agricultural industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2It is a structural schematic diagram of another direction of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the load-bearing frame of the utility model.

[0023] Figure 4 It is a structural schematic diagram of the driving wheel of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the driven wheel of the utility model.

[0025] Figure 6 It is a structural schematic diagram of the utility model spraying device.

[0026] Figure 7 for Figure 6 Schematic diagram of the middle pulley winding method.

[0027] In the figure: 1, vertical guide rail, 2, load-bearing frame, 3, back plate, 4, water pipe, 5, fixing part, 6, seat chassis, 7, driving wheel, 8, auxiliary wheel, 9, driven wheel, 10, hook groove, 11, trailer connecting part, 12, water tank, 13, track, 14, curved flatbed trolley, 15, gear box, 16, motor, 17, driving wheel bracket connecting part, 18, driving wheel universal rotating shaft, 19, half-axle flange, 20, driving bridge connecting part, 201, connecting plate, 202, connecting part, 21, driving end secondary wheel shaft, 22, Joint limiter, 23, U-shaped joint, 24, driven wheel universal rotary shaft, 25, universal base, 26, driven bridge connector, 27, front axle limiter, 28, driven wheel double wheel frame, 29, driven double wheel axle, 30, limit stopper, 31, pulley, 32, slider, 33, nozzle, 34, fixed track frame, 35, second track frame, 36, third track frame, 37, cross bar, 38, wire rope, 39, driven wheel bracket connector, 40, arc frame, 41, support frame, 42, longitudinal beam, 43, tension spring. DETAILED DESCRIPTION

[0028] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example: Figure 1-Figure 3As shown, the utility model is a circular track multifunctional working vehicle, in which a track 13 is laid on the ground surface within its working range, and the circular track multifunctional working vehicle runs along the track 13. The circular track multifunctional working vehicle comprises a seat chassis 6, a bearing frame 2, a motor, a driving wheel 7 in contact with the track 13, a driven wheel 9 and an auxiliary wheel 8, the seat chassis 6 is placed on the bearing frame 2, and the support frame of the bearing frame 2 extends out of the seat chassis 6, the driving wheel 7, the driving wheel support assembly above the driven wheel 9, and the driven wheel support assembly are placed between the bearing frame 2 and connected to the bottom of the seat chassis 6, the driving wheel 7 is symmetrically installed at both ends of the half-axle flange 19 of the driving wheel support assembly, the short axis of the half-axle flange 19 is installed with a driving end secondary wheel shaft 21 through a driving bridge connector 20, and the auxiliary wheel 8 is installed on the driving end secondary wheel shaft 21, the driven wheel 9 is symmetrically installed at both ends of the driven double wheel shaft 29 of the driven wheel support assembly, and the motor 16 is connected to the half-axle flange 19 on both sides of the driving wheel 7 through a gear box 15.

[0030] like Figure 4 As shown, the driving wheel support assembly includes a half-axle flange 19, a driving axle connector 20, a driving wheel universal rotary shaft 18 and a driving wheel bracket connector 17. The two ends of the driving axle connector 20 are symmetrically connected to the half-axle flange 19, and the driving wheel bracket connector 17 is connected to the driving axle connector 17 through the driving wheel universal rotary shaft 18.

[0031] The half-shaft flange 19 is composed of a flange end connected to a short shaft, which is connected to the driving wheel 7 through the short shaft, and the flange ends are respectively connected to the gear box 15 and the motor 16. The gear box 15 is driven to rotate by the motor 16, and the half-shaft flange 19 and the driving wheel 7 thereon are driven to rotate at the same time.

[0032] The active axle connecting member 20 is composed of connecting members 202 symmetrically arranged at both ends of a connecting plate 201. The connecting member 202 is sleeved on the short shaft of the half-shaft flange 19, and the protruding end is connected to the active end secondary wheel shaft 21. A tension spring 43 is connected to the protruding end of the connecting member 202 and the active end secondary wheel shaft 21, and its function is to elastically connect the active wheel 7 and the auxiliary wheel 8 for smoother driving.

[0033] The driving wheel bracket connecting piece 17 has inclined surfaces on both sides of one end, forming a trapezoidal frame structure in cross section. A through hole is opened in the middle of this end, on which a bearing for connecting the driving wheel universal rotating shaft 18 is arranged. The other end is a plate-shaped structure that cooperates with the seat chassis 6, and has a mounting hole that cooperates with the seat chassis 6.

[0034] The driving wheel 7, the driven wheel 9 and the auxiliary wheel 8 move along the direction of the track 13; the driving bridge connector 20 on the half-axle flange 19 connected to the driving wheels 7 on both sides is connected to the driving wheel universal rotary shaft 18, thereby driving the driving wheels 7 on both sides to turn.

[0035] like Figure 5 As shown, the driven wheel support assembly includes a driven bridge connector 26, a universal base 25, a driven wheel universal rotating shaft 24, a U-shaped joint 23, a joint limiter 22 and a driven wheel bracket connector 33. The driven bridge connector 26 is composed of connecting ear plates provided at both ends of a top plate, and the driven double wheel axle 29 of the driven wheel 9 is connected through the connecting ear plates. A through hole is opened on the top plate to cooperate with the driven wheel universal rotating shaft 24. One end of the driven wheel universal rotating shaft 24 extends into the through hole of the driven bridge connector 26, and the other end passes through the universal base 25 and is movably connected to the connecting sleeve of the U-shaped joint 23. The U-shaped joint 23 is connected to the driven wheel bracket connector 39 through the joint limiter 22. The U-shaped joint 23 is rotatably connected to the two ends of the connecting sleeve with bent end plates, and is connected to the driven wheel bracket connecting piece 33 through the two bent end plates. The bent plates have through holes on both sides and are movably connected to the connecting sleeve through pins; a joint limiter 22 is provided at the top of the connecting sleeve with a gap left between it and the driven wheel bracket connecting piece 33.

[0036] The articulated stopper 22 is composed of two support plates arranged in parallel, one end of which has an arc groove matched with the outer surface of the connecting sleeve, and is installed on the connecting sleeve through the arc groove, and the other end surface is parallel to the bottom end surface of the driven wheel bracket connecting member 33, and the installation distance between the two end surfaces is 1.5mm±0.2mm. The function of the stopper 22 is to limit the amplitude of the left and right shaking of the entire driven wheel support assembly, so that the driven wheel 9 can run smoothly when turning through the track 13 with an uneven road surface.

[0037] The driven wheel 9 consists of two wheels, which are installed on the driven double wheel axle 29 through the driven wheel double wheel frame 28. The driven double wheel axle 29 between the driven bridge connecting member 26 and the driven wheel double wheel frame 28 is equipped with a front axle limiter 27. The front axle limiter 27 is a bent plate, one end of which is provided with a U-shaped groove that matches the driven double wheel axle 29, and the other end of the bent plate is placed above the top plate of the driven wheel double wheel frame 28.

[0038] The minimum upper and lower clearance between the U-shaped notch of the front axle stopper 27 and the driven double wheel axle 29 is 4 mm ± 0.2 mm, which limits the front and rear shaking of the driven wheels 9 on both sides.

[0039] The universal base 28 is fixed to the top plate of the driven bridge connector 26 via a gasket to prevent wear between the universal base 28 and the driven bridge connector 26 .

[0040] The driven wheel universal rotating shaft 24 is connected to the connecting sleeve of the U-shaped joint 23, the universal base 25 and the top plate of the driven bridge connecting piece 26 by bearings, so that the driven wheel universal rotating shaft 24 can rotate freely, and the universal base 25 can rotate relative to the driven wheel universal rotating shaft 24, so that when turning, the utility model can prevent one of the driven wheels from being vacated or floating, so that the working vehicle of the utility model can run smoothly.

[0041] The driven wheel bracket connector 39 has inclined surfaces on both sides of one end, forming a trapezoidal frame structure in cross section. A through hole is opened in the middle of this end, and a bearing for connecting the driven wheel universal rotating shaft 24 is provided on it. The other end is a plate-shaped structure that cooperates with the seat chassis 6.

[0042] The auxiliary wheels 8 are installed at both ends of the secondary wheel shaft 21 at the active end, and the supporting seat chassis 6 is placed above the supporting frame 2 and the bracket connector 17. A back plate 3 is provided on the support frame 41 of the supporting frame 2, and a control box is connected to the back plate 3. The control box controls the motor 16 to drive the gear box 15 to rotate, thereby driving the operation of the active wheel 7, the driven wheel 9, and the auxiliary wheel 8.

[0043] like Figure 6-Figure 7 As shown, when the utility model needs to spray medicine, a spray medicine device is also installed on the seat chassis 6 through a fixing member 5 (angle steel is used in this example), and the spray medicine device includes a spray medicine frame, and the spray medicine frame includes three track frames that are slidably connected in sequence, one of which is a fixed track frame 34, which is fixed to the seat chassis 6 through a fixing member 5, and each track frame is composed of two vertical guide rails 1 arranged in parallel. A cross bar 37 is arranged on the top of the fixed track frame 34 and the tops and bottoms of the other two track frames, and a pulley 31 (U-shaped nylon pulley is used in this example) is arranged on it. One end of the wire rope 38 is connected to the fixed track frame The other end of the wire rope 38 is passed through the bottom pulley of the second track frame 35, the top pulley of the second track frame 35, the bottom pulley of the third track frame 36, and the top pulley of the third track frame 36 in sequence, and then connected to the rope winding member (existing) arranged at the output shaft end of the stepper motor. The spraying pipes are arranged on both sides of each track frame, and a nozzle 33 is arranged on the spraying pipes on both sides of each track frame. When the track frame rises and unfolds, the nozzles 33 on each side form an upper, middle and lower arrangement; the stepper motor is used to pull the wire rope 38 in forward and reverse rotation, so that the second track frame 35 and the third track frame 36 can move up and down.

[0044] The nozzle 33 of the third track frame 36 is located at the top thereof, and when each track frame is raised and unfolded, the distance between the nozzles 33 on each side is 0.6m±0.2mm.

[0045] The spray frame of the spray device is provided with guide rails to form three track frames, and the sliding blocks matched therewith are respectively connected to the second track frame 35 and the third track frame 36 .

[0046] The top and bottom ends of the vertical guide rails 1 of each track frame are both connected by bolts and provided with limit blocks 30 for limiting the operation of the slider thereon.

[0047] When spraying medicine, the utility model is driven by the spraying motor to drive the steel wire rope 38 to slide along each pulley, driving the second and third track frames to slide and rise relative to the fixed track frame, so that the upper nozzle is suitable for crops of different heights.

[0048] like Figure 3 As shown, the load-bearing frame 2 is composed of an inverted U-shaped support frame 41 arranged on an arc frame 40. The arc frame 40 is composed of two inverted U-shaped frames arranged in parallel, with longitudinal beams 42 connected at both ends, and the driving wheel bracket connector 17 and the driven wheel bracket connector 26 are respectively installed between them. The seat chassis 6 is an arc plate that matches the arc frame and is buckled on the arc frame 40.

[0049] A hook groove 10 is provided on the rear end longitudinal beam 42 of the load-bearing frame 2, which is used to connect a curved flatbed trolley 14 (existing technology) through a trailer connector 11 to ensure that the work vehicle runs stably on the track and prevent derailment. The curved flatbed trolley 14 is used to place water tanks, work tools and other items.

[0050] From the above description, it can be seen that the utility model reasonably designs a circular track multifunctional work vehicle according to the characteristics and conditions of the greenhouse. It lays a track 1 for operation on the ground of the greenhouse, and places a bearing seat chassis 6 with track wheels on the upper surface of the track 1, and sprays the crops on both sides at different heights. The operator can also place other mechanical equipment required for operation on the curved flatbed trolley 14, and complete the required operation tasks by pulling the curved flatbed trolley 14 by the operation vehicle; this operation method greatly reduces the labor intensity of the operator, improves the overall operation efficiency, and further ensures the safety of the operator.

[0051] It can be seen from the above description that, through the above arrangement, the driving wheel, the driven wheel and the auxiliary wheel will not be separated from the track 1, so that they can operate according to the preset route of the track 1.

[0052] The control box (existing technology) is installed on the load-bearing frame 2 through the back plate 3, and the motor is connected to the control box to control the operation of the working vehicle. The motor 16 and the control box are both connected to the battery through electrical signals, and the battery provides a power source for the motor 16 and the control box. The working state of the motor 16 is controlled by the control box to realize the mobile function of the working vehicle.

[0053] The material of the seat chassis 6 is sheet metal, and its periphery is fixedly connected to the supporting frame 2 by bolts. The supporting frame 2 is welded by 30 mm square tubes. Appropriate local welding of the supporting frame 2 can improve its overall stability.

[0054] The utility model can be used as a transport vehicle. Before performing an operation, the operator installs the mechanical equipment required for the operation on the load-bearing vehicle seat chassis 6. If there are multiple operation requirements, the curved flatbed trolley 14 can be connected to the hook groove 10 at the rear of the circular track multifunctional operation vehicle through the trailer connector 11, and other mechanical equipment can be installed on the curved flatbed trolley 14 to follow the track operation vehicle to perform the operation.

[0055] The utility model is provided with ultrasonic sensors at the front end of the seat chassis 6 and the end of the last flatbed trolley 14 connected thereto, so as to automatically avoid obstacles, effectively identify obstacles ahead, and brake in time.

[0056] The utility model can not only carry out harvesting and transportation, but also assist in pinching tips, dropping vines, removing old leaves, spraying medicine, fertilizing, inspection and the like. If fertilization is required, a fertilization device can be installed on the seat chassis 6, and when spraying medicine is required, the spraying device can be installed. A camera or inspection sensor (existing purchased parts) can also be provided at the top of the inverted U-shaped support frame 41 of the supporting frame 2 for crop inspection operations in the greenhouse. If other operations are required, the corresponding operation devices can be installed, so that a variety of agricultural operations can be realized, and one vehicle can be used for multiple purposes.

[0057] The utility model can realize human-machine interaction (existing technology). A voice receiving module and a remote control command receiving module (existing purchased parts) are arranged in the control box. Through voice control and / or remote control operation, the operator can remotely monitor the production vehicle during busy operations, thereby realizing human-machine separation, reducing labor intensity, and improving the safety and convenience of operations.

[0058] The utility model can be manually operated to push forward and travel, and can also be remotely controlled by controlling the motor 16 and the gear box 15 through a remote controller, so that the function of remote control by the operator is realized.

[0059] The components not described in detail in this application are all existing conventional technologies and will not be described in detail here.

[0060] The above is a description of the technical solution of the present invention, which is only used to illustrate the present invention and is not limited to the technical solution described in the embodiments of the present invention. Ordinary technicians in the field can still modify or replace the present invention with equivalents. As long as they do not depart from the spirit and scope of the technical solution of the present invention and meet the needs of use, they are all within the scope of the claims of the present invention.

Claims

1. A circular track multifunctional working vehicle, characterized in that: It includes a seat chassis, a bearing frame, a motor, a driving wheel, a driven wheel and an auxiliary wheel in contact with the track, the track is set on the surface of the working vehicle's running route, the seat chassis is placed on the bearing frame, and the supporting frame of the bearing frame extends out of the seat chassis, the driving wheel, the driving wheel support assembly above the driven wheel, and the driven wheel support assembly are placed between the bearing frame and connected to the bottom of the seat chassis, the driving wheel is symmetrically installed at both ends of the half-axle flange of the driving wheel support assembly, the short axis of the half-axle flange is installed with a driving end secondary wheel shaft through a driving bridge connector, the auxiliary wheel is installed on the driving end secondary wheel shaft, the driven wheels are symmetrically installed at both ends of the driven double wheel shaft of the driven wheel support assembly, and the motor is connected to the half-axle flanges on both sides of the driving wheel through a gear box.

2. The circular track multifunctional working vehicle according to claim 1, characterized in that: The driving wheel support assembly includes a half-axle flange, a driving axle connector, a driving wheel universal rotary shaft and a driving wheel bracket connector. The two ends of the driving axle connector are symmetrically connected to the half-axle flange, and the driving wheel bracket connector is connected to the driving axle connector through the driving wheel universal rotary shaft.

3. The circular track multifunctional working vehicle according to claim 2, characterized in that: The active axle connecting member is a connecting member symmetrically arranged at both ends of the connecting plate, wherein the connecting member is sleeved on the short shaft of the half-axle flange, and the protruding end is connected to the active end secondary wheel shaft, and a tension spring is connected to the protruding end of the connecting member and the active end secondary wheel shaft.

4. The circular track multifunctional working vehicle according to claim 2, characterized in that: The driving wheel bracket connecting piece has inclined surfaces on both sides of one end, forming a trapezoidal frame structure in cross section. A through hole is opened in the middle of this end, on which a bearing for connecting the driving wheel universal rotary shaft is arranged. The other end is a plate-shaped structure that cooperates with the seat chassis, and has a mounting hole that cooperates with the seat chassis.

5. The circular track multifunctional working vehicle according to claim 3, characterized in that: The driven wheel support assembly includes a driven bridge connector, a universal base, a driven wheel universal rotating shaft, a U-shaped joint, a joint limiter and a driven wheel bracket connector. The driven bridge connector is composed of connecting ear plates arranged at both ends of a top plate, and the driven double wheel axle of the driven wheel is connected through the connecting ear plates. A through hole is opened on the top plate and cooperates with the driven wheel universal rotating shaft to pass through; one end of the driven wheel universal rotating shaft extends into the through hole of the driven bridge connector, and the other end passes through the connecting sleeve of the universal base and is movably connected to the U-shaped joint. The U-shaped joint is rotatably connected to bent end plates at both ends of the connecting sleeve, and is connected to the driven wheel bracket connector through two bent end plates. A joint limiter is arranged on the top of the connecting sleeve and leaves a gap with the driven wheel bracket connector.

6. The circular track multifunctional working vehicle according to claim 5, characterized in that: The movable limiter is composed of two support plates arranged in parallel, one end of which has an arc groove that matches the outer surface of the connecting sleeve. It is installed on the connecting sleeve through the arc groove, and the other end face is parallel to the bottom end face of the driven wheel bracket connecting piece. The installation distance between the two end faces is 1.5mm±0.2mm.

7. The circular track multifunctional working vehicle according to claim 5, characterized in that: The driven wheel consists of two wheels, which are installed on the driven double wheel axle through the driven wheel double wheel frame. Front axle limiters are installed on the driven double wheel axles between the driven bridge connecting member and the driven wheel double wheel frame. The front axle limiters are a bent plate, one end of which is provided with a through hole for cooperating with the driven double wheel axle, and the other end of the bent plate is placed above the top plate of the driven wheel double wheel frame.

8. The circular track multifunctional working vehicle according to claim 7, characterized in that: The distance between the bending plate and the top plate of the driven wheel double wheel frame is 4mm±0.2mm.

9. The circular track multifunctional working vehicle according to claim 1, characterized in that: A medicine spraying device is also installed on the seat chassis, and the medicine spraying device includes a medicine spraying frame, and the medicine spraying frame includes three track frames slidably connected in sequence, one of which is a fixed track frame, which is fixed to the seat chassis by a fixing part, and each track frame is composed of two vertical guide rails arranged in parallel. A cross bar is arranged at the top of the fixed track frame and the tops and bottoms of the other two track frames, and pulleys are arranged on them. One end of the steel wire rope is connected to the pulley at the top of the fixed track frame, and the other end is connected to the rope winding member arranged at the output shaft end of the motor after passing through the bottom pulley of the second track frame, the top pulley of the second track frame, the bottom pulley of the third track frame, and the top pulley of the third track frame in sequence. The medicine spraying pipes are placed on both sides of each track frame, and a nozzle is arranged on the medicine spraying pipes on both sides of each track frame. When the track frame rises and unfolds, the nozzles on each side form an upper, middle and lower arrangement.

10. The circular track multifunctional working vehicle according to claim 9, characterized in that: The nozzle of the third track frame is located at the top thereof, and the nozzle spacing on each side is 0.6m±0.2mm when the track frame rises and unfolds.

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