A front-mounted grapevine finger poking and standing device

Abstract

This invention proposes a front-mounted grapevine support device, which can be installed on the front counterweight of a tractor. Its power and electricity are provided by the tractor. The ground clearance of the main frame is adjusted by regulating the extension and retraction length of the hydraulic cylinder, thus accommodating grapevines at different ground clearances. The rotation speed is adjusted to accommodate grapevines with different spacing. During tractor movement, the support fingers slide and extend in space. At the lowest point, the end can reach under the grapevine in the soil to lift it. At the highest point, the fingers retract, completing the grapevine support operation. This invention is highly adaptable to various working environments, improves the automation level and efficiency of the operation, and fills a gap in agricultural machinery related to grapevine support.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a front-mounted grapevine support device. Background Technology

[0002] In northern my country, grape cultivation is widespread, and the cold, dry winters make grapevines susceptible to wind damage and frost damage. When winter arrives, farmers prune the grapevines and remove them from the trellis for winter protection, often covering them with soil to ensure their survival through the winter.

[0003] In spring, grapevines need to be uprooted and trellised. Uprooting requires manual labor to straighten the vines and then tie them to the wires of the trellis. Because this process requires manual uprooting, it involves a lot of bending over in a short period, and the efficiency decreases as the work continues. Currently, there is no agricultural machinery available on the market specifically for uprooting grapevines. Summary of the Invention

[0004] To address the current lack of machinery for supporting grapevines in spring in vineyards, this invention patent designs a tractor-mounted front-mounted grapevine finger-supporting device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A front-mounted grapevine support device.

[0007] It includes the hydraulic lifting frame, the main frame, the control system, the transmission system, and the actuator.

[0008] The hydraulic lifting frame is fixedly connected to the main frame, and the main frame slides up and down along the hydraulic lifting frame to adjust the height of the front-mounted grapevine finger support device.

[0009] The main frame portion is a hollow rectangular frame;

[0010] The control system is installed on the main frame and is used to control the rotation speed of the front-mounted grapevine finger support device.

[0011] The transmission system is installed inside the rectangular frame of the main frame and is used to transmit external power.

[0012] The transmission system is horizontally equipped with a rail cylinder, and the rail cylinder is provided with a spatial slide with a certain depth.

[0013] External power is input from the vertical direction and drives the tracked cylinder to rotate along the horizontal axis through the gear meshing structure of the transmission system.

[0014] The actuator is partially engaged within the spatial slide of the transmission system and is used to support the grapevine.

[0015] The actuator part is a rod-shaped structure that slides within the spatial slide of the transmission system part when it rotates along the horizontal axis.

[0016] The actuator part extends and retracts as the tracked cylinder rotates; under the control of the spatial slide groove, the actuator part extends when it rotates to the lowest point and retracts when it rotates to the highest point.

[0017] Based on the above solution, the hydraulic lifting frame includes: a mounting base, a hydraulic cylinder, a lifting frame frame, a sprocket, a chain, a fixed base, a slide rail, and a slider;

[0018] The mounting base is fixedly connected to the front counterweight bracket of the tractor;

[0019] The hydraulic cylinder is hinged to the upper surface of the mounting base;

[0020] A circular shaft passes through the top of the hydraulic cylinder, and sprockets are installed at both ends of the circular shaft. Bearings are installed between the sprockets and the circular shaft, and the sprockets can rotate around the circular shaft.

[0021] One end of the chain is fixed to the upper surface of the mounting base by a fixing seat, and the other end passes around the sprocket and is connected to the slider.

[0022] The slide rail is fixedly connected to the front surfaces of both sides of the lifting frame; the slide rail on the slider cooperates with the slide rail and can slide up and down along the slide rail.

[0023] Based on the above scheme, a limiting top rod is installed below the crossbeam on the lifting frame to limit the extreme position of the hydraulic cylinder extension, thereby controlling the lifting distance of the slider; a limiting top rod is installed on the mounting base directly below the slider to limit the lower limit position of the slider.

[0024] Based on the above solution, the main frame includes: a main frame frame, a motor strut, a support plate, a motor mounting base, a T-shaped support, support wheels, support wheel seats, and a central fixed shaft;

[0025] The main frame is fixedly connected to the slider of the hydraulic lifting frame section;

[0026] A support plate is installed on the lower surface of the motor support rod;

[0027] The motor support rod is fixedly connected to the upper crossbeam of the main frame at both ends to support the motor mounting base;

[0028] The motor mounting bracket is fixed to the upper surface of the motor support rod and is used to mount the stepper motor;

[0029] The T-shaped strut is fixed to the two horizontal support beams of the main frame to support the central fixed shaft; one end of the T-shaped strut and the bottom of the central fixed shaft are respectively fixed with flanges, and the two flanges are fixedly connected to position the central fixed shaft.

[0030] The installation angle of the central fixed shaft can be adjusted by the relative position of the two flanges;

[0031] The main frame is mounted on the slider of the hydraulic lifting frame.

[0032] Based on the above solution, the control system includes: a development board, a stepper motor driver, and a stepper motor;

[0033] The development board and stepper motor driver are mounted on the upper surface of the support plate of the main frame; the stepper motor is mounted on the motor mounting base, and the motor shaft is connected to the drive gear shaft via a coupling.

[0034] Based on the above scheme, the transmission system also includes: a coupling, a circular bearing with a boss, a drive gear shaft, a driven gear disc, a gear disc base, a bearing end cover, and several bearings;

[0035] The circular bearing with a boss is fixedly installed on the lower surface of the support plate of the main frame section;

[0036] The drive gear shaft passes through a circular bearing with a boss and is connected to a coupling above the support plate of the main frame.

[0037] The gear on the drive gear shaft meshes with the gear on the driven gear disk, and the rotation of the drive gear shaft drives the driven gear disk to rotate.

[0038] The driven gear disk is fixedly connected to the gear disk base;

[0039] The gear disk base is connected to the central fixed bottom via a bearing, allowing the gear disk base to rotate around the central fixed axis.

[0040] The gear disk base is fixedly connected to the wall of the rail-mounted cylindrical tube;

[0041] The space slide is mounted on the central fixed shaft of the main frame section, and the two are positioned by a keyway.

[0042] The inner and outer surfaces of the top of the rail cylinder are both equipped with thrust ball bearings, which are used together for axial positioning of the rail cylinder.

[0043] The bearing end cap is installed at the end of the central fixed shaft and is used to position the bearing.

[0044] Based on the above scheme, two slide rails are symmetrically arranged on the inner wall of the tracked cylinder for axial sliding of the finger.

[0045] Based on the above scheme, the actuator part includes: a rotor, a shift finger, and a rubber roller;

[0046] The dial finger is installed inside the track on the inner wall of the rail cylinder;

[0047] One end of the lever is a round rod, and the other end is a square rod; the end of the round rod of the lever is bent down, and a rubber roller is installed on the bent end;

[0048] The rubber roller can rotate along the finger;

[0049] The square rod portion of the dial is installed inside the track of the rail-mounted cylinder;

[0050] The rotor is installed at the end of the square rod; one end of the rotor is connected to the end of the square rod of the shift finger, and the other end is placed in the groove of the spatial slide.

[0051] The spatial slide and the central fixed shaft are fixed in place, while the tracked cylinder rotates around the central fixed shaft under the drive of the driven gear disk;

[0052] During rotation, the rotor slides along the groove on the spatial slide, thereby driving the dial finger in the track cylinder to slide along the track inside the track cylinder.

[0053] Based on the above scheme, the grooves on the space slide are symmetrically distributed along the axial plane, and the two fingers mounted on the grooves move in opposite directions during machine operation.

[0054] The axial span of the groove on the spatial slide is the extension length of the finger.

[0055] The timing of the extension and retraction of the finger can be controlled by changing the installation angle of the space slide and controlling the relative position of the groove.

[0056] Based on the above solution, a tractor is provided, wherein a control handle is installed in the cab of the tractor, and the control handle is equipped with a control button for the working status of the hydraulic cylinder and a knob for controlling the speed of the motor.

[0057] The tractor front counterweight bracket is fixedly connected to a front-mounted grapevine finger-supporting device as described in any of claims 1-9.

[0058] The beneficial effects of this invention are:

[0059] 1. This device enables mechanized operations for supporting grapevines in vineyards during the spring;

[0060] 2. This device can adjust the ground clearance of the main frame by adjusting the extension and retraction length of the hydraulic cylinder, thus adapting to grapevines at different ground clearances;

[0061] 3. The rotation speed in this device can be adjusted according to the planting density of the grapevines to accommodate grapevines with different spacing between plants;

[0062] 4. This device can erect grapevines while the tractor is moving, which helps to improve work efficiency;

[0063] 5. The part of the device that contacts the grapevine is made of rubber, and it can rotate along the grapevine, greatly reducing mechanical damage to the grapevine;

[0064] 6. This device is also suitable for vineyards where soil clearing is ineffective. The end of its finger can be inserted under the vine in the soil to lift the vine.

[0065] 7. This invention can provide a design reference for the mechanization of vine support and tying operations in vineyards. Attached Figure Description

[0066] The present invention includes the following figures:

[0067] Figure 1 A schematic diagram of the overall structure of the present invention;

[0068] Figure 2 Schematic diagram of the hydraulic lifting frame of the present invention;

[0069] Figure 3 Schematic diagram of the main frame structure of the present invention;

[0070] Figure 4 A schematic diagram of the front transmission part of the present invention;

[0071] Figure 5 A schematic diagram of the rear transmission section of the present invention;

[0072] Figure 6 A schematic diagram of the actuator part of the present invention;

[0073] Figure 7 Schematic diagram of the spatial slide structure of the present invention;

[0074] In the diagram: 1. Mounting base; 2. Hydraulic cylinder; 3. Lifting frame; 4. Limiting rod; 5. Sprocket; 6. Chain; 7. Fixed base; 8. Slide rail; 9. Slider; 10. Main frame; 11. Motor support rod; 12. Support plate; 13. Motor mounting base; 14. T-shaped support; 15. Support wheel; 16. Support wheel seat; 17. Central fixed shaft; 18. STM32 development board; 19. Stepper motor driver; 20. Stepper motor; 21. Coupling; 22. Spatial slide; 23. Circular bearing with boss; 24. Drive gear shaft; 25. Driven gear disk; 26. Gear disk base; 27. Rail-mounted cylinder; 28. Bearing end cover; 29. ​​Several bearings; 30. Rotor; 31. Shift finger; 32. Rubber roller. Detailed Implementation

[0075] The following combination Figure 1-7 The present invention will be described in further detail below.

[0076] This invention provides a front-mounted grapevine support device, such as... Figure 1 :

[0077] It includes the hydraulic lifting frame, the main frame, the control system, the transmission system, and the actuator.

[0078] The hydraulic lifting frame is fixedly connected to the main frame, and the main frame slides up and down along the hydraulic lifting frame to adjust the height of the front-mounted grapevine finger support device.

[0079] The main frame portion is a hollow rectangular frame;

[0080] The control system is installed on the main frame and is used to control the rotation speed of the front-mounted grapevine finger support device.

[0081] The transmission system is installed inside the rectangular frame of the main unit and is used to transmit external power; this external power is provided by the tractor.

[0082] The transmission system is horizontally equipped with a rail cylinder, and the rail cylinder is provided with a spatial slide with a certain depth.

[0083] External power is input from the vertical direction of this device, and drives the tracked cylinder to rotate around the horizontal axis through the gear meshing structure of the transmission system.

[0084] The actuator is partially engaged within the spatial slide of the transmission system and is used to support the grapevine.

[0085] The actuator part is a rod-shaped structure that slides within the spatial slide of the transmission system part when it rotates along the horizontal axis.

[0086] The actuator part extends and retracts as the tracked cylinder rotates; under the control of the spatial slide groove, the actuator part extends when it rotates to the lowest point and retracts when it rotates to the highest point.

[0087] Based on the above solutions, such as Figure 2 :

[0088] The hydraulic lifting frame includes: a mounting base, a hydraulic cylinder, a lifting frame frame, a sprocket, a chain, a fixed base, a slide rail, and a slider;

[0089] The mounting base is fixedly connected to the front counterweight bracket of the tractor;

[0090] The hydraulic cylinder is hinged to the upper surface of the mounting base; preferably, it is mounted via a pin.

[0091] A circular shaft passes through the top of the hydraulic cylinder, and sprockets are installed at both ends of the circular shaft. Bearings are installed between the sprockets and the circular shaft, and the sprockets can rotate around the circular shaft.

[0092] One end of the chain is fixed to the upper surface of the mounting base by a fixing seat, and the other end passes around the sprocket and is connected to the slider.

[0093] The slide rail is fixedly connected to the front surfaces of both sides of the lifting frame; the slide rail on the slider cooperates with the slide rail and can slide up and down along the slide rail.

[0094] Based on the above scheme, a limiting top rod is installed below the crossbeam on the lifting frame to limit the extreme position of the hydraulic cylinder extension, thereby controlling the lifting distance of the slider; a limiting top rod is installed on the mounting base directly below the slider to limit the lower limit position of the slider.

[0095] Based on the above solutions, such as Figure 3 :

[0096] The main frame includes: a main frame frame, a motor strut, a support plate, a motor mounting base, a T-shaped support, support wheels, support wheel seats, and a central fixed shaft;

[0097] The main frame is fixedly connected to the slider of the hydraulic lifting frame section;

[0098] A support plate is installed on the lower surface of the motor support rod;

[0099] The motor support rod is fixedly connected to the upper crossbeam of the main frame at both ends to support the motor mounting base;

[0100] The motor mounting bracket is fixed to the upper surface of the motor support rod and is used to mount the stepper motor;

[0101] The T-shaped strut is fixed to the two horizontal support beams of the main frame to support the central fixed shaft; one end of the T-shaped strut and the bottom of the central fixed shaft are respectively fixed with flanges, and the two flanges are fixedly connected to position the central fixed shaft.

[0102] The installation angle of the central fixed shaft can be adjusted by the relative position of the two flanges;

[0103] The main frame is mounted on the slider of the hydraulic lifting frame.

[0104] Based on the above solution, the control system includes: a development board, a stepper motor driver, and a stepper motor;

[0105] The development board and stepper motor driver are mounted on the upper surface of the support plate of the main frame; the stepper motor is mounted on the motor mounting base, and the motor shaft is connected to the drive gear shaft via a coupling.

[0106] The power supply used in the control system is the tractor power supply.

[0107] Based on the above solutions, such as Figure 4 :

[0108] The transmission system also includes: a coupling, a circular bearing with a boss, a drive gear shaft, a driven gear disc, a gear disc base, a bearing end cover, and several bearings.

[0109] The circular bearing with a boss is fixedly installed on the lower surface of the support plate of the main frame section;

[0110] The drive gear shaft passes through a circular bearing with a boss and is connected to a coupling above the support plate of the main frame.

[0111] The gear on the drive gear shaft meshes with the gear on the driven gear disk, and the rotation of the drive gear shaft drives the driven gear disk to rotate.

[0112] The driven gear disk is fixedly connected to the gear disk base;

[0113] The gear disk base is connected to the central fixed bottom via a bearing, allowing the gear disk base to rotate around the central fixed axis.

[0114] The gear disk base is fixedly connected to the wall of the rail-mounted cylindrical tube;

[0115] The space slide is mounted on the central fixed shaft of the main frame section, and the two are positioned by a keyway.

[0116] The inner and outer surfaces of the top of the rail cylinder are both equipped with thrust ball bearings, which are used together for axial positioning of the rail cylinder.

[0117] The bearing end cap is installed at the end of the central fixed shaft and is used to position the bearing.

[0118] Based on the above scheme, two slide rails are symmetrically arranged on the inner wall of the tracked cylinder for axial sliding of the finger.

[0119] Based on the above solutions, such as Figures 5 to 7 :

[0120] The actuator includes: a rotor, a shift finger, and a rubber roller;

[0121] The dial finger is installed inside the track on the inner wall of the rail cylinder;

[0122] One end of the lever is a round rod, and the other end is a square rod; the end of the round rod of the lever is bent down, and a rubber roller is installed on the bent end;

[0123] The rubber roller can rotate along the finger;

[0124] The square rod portion of the dial is installed inside the track of the rail-mounted cylinder;

[0125] The rotor is installed at the end of the square rod; one end of the rotor is connected to the end of the square rod of the shift finger, and the other end is placed in the groove of the spatial slide.

[0126] The spatial slide and the central fixed shaft are fixed in place, while the tracked cylinder rotates around the central fixed shaft under the drive of the driven gear disk;

[0127] During rotation, the rotor slides along the groove on the spatial slide, thereby driving the shift finger in the track cylinder to slide along the track inside the track cylinder, thus realizing the action of the shift finger rotating and extending at the same time.

[0128] Based on the above scheme, the grooves on the space slide are symmetrically distributed along the axial plane, and the two fingers mounted on the grooves move in opposite directions during machine operation.

[0129] The axial span of the groove on the spatial slide is the extension length of the finger.

[0130] The timing of the extension and retraction of the lever can be controlled by changing the installation angle of the spatial slide and controlling the relative position of the groove. The downward-folded end of the lever is used to position the grapevine during the erection process, preventing it from slipping to the side along the pole during the lifting process; in addition, when the lever moves to the near-ground end, its downward-folded end can reduce the gap between the pole and the ground, thereby allowing for more accurate insertion into the lower part of the vine.

[0131] The general working process of this invention is as follows: Before operation, the device is fixedly installed on the counterweight bracket at the front of the tractor, and the control unit is connected to the tractor's power supply. The tractor is driven to a suitable position between rows, and the hydraulic cylinder is adjusted to place the main frame at an appropriate height. During operation, the tractor drives the device forward, the control system switch is turned on, and the stepper motor starts at its initial speed, driving the tracked cylinder to rotate. The rotor of the shift finger slides along the groove of the spatial slide, thereby driving the shift finger to slide within the track of the tracked cylinder, achieving the effect of the shift finger extending and rotating simultaneously with the rotation of the tracked cylinder. Under the control of the spatial slide groove, the shift finger can extend when it is about to reach the lowest point and retract when it is about to reach the highest point. In this way, the shift finger can insert into the lower part of the grapevine at the lowest point to lift the grapevine; and retract at the highest point to release the grapevine; thus completing the mechanized operation of supporting the grapevine.

[0132] The fixing method described in this invention can be either bolt fixing or welding fixing.

[0133] On the other hand, the present invention also provides a tractor, wherein a control handle is installed in the tractor cab, and the control handle is equipped with a control button for the working state of the hydraulic cylinder and a knob for controlling the speed of the motor; the front counterweight bracket of the tractor is fixedly connected to the aforementioned front-mounted grapevine finger support device.

[0134] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the essence and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention. The scope of patent protection of the present invention should be defined by the claims.

[0135] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A front-mounted grapevine support device, characterized in that, It includes the hydraulic lifting frame, the main frame, the control system, the transmission system, and the actuator. The hydraulic lifting frame is fixedly connected to the main frame, and the main frame slides up and down along the hydraulic lifting frame to adjust the height of the front-mounted grapevine finger support device. The main frame portion is a hollow rectangular frame; The control system is installed on the main frame and is used to control the rotation speed of the front-mounted grapevine finger support device. The transmission system is partially installed inside the rectangular frame and is used to transmit external power. The transmission system is horizontally equipped with a rail cylinder, and the rail cylinder is provided with a spatial slide with a certain depth. External power is input from the vertical direction and drives the tracked cylinder to rotate along the horizontal axis through the gear meshing structure of the transmission system. The actuator is partially engaged within the spatial slide of the transmission system and is used to support the grapevine. The actuator part is a rod-shaped structure that slides within the spatial slide of the transmission system part when it rotates along the horizontal axis. The actuator part extends and retracts as the tracked cylinder rotates; Under the control of the groove on the spatial slide, the actuator extends when it rotates to the lowest point and retracts when it rotates to the highest point; The actuator includes: a rotor, a shift finger, and a rubber roller; The dial finger is installed inside the track on the inner wall of the rail cylinder; One end of the lever is a round rod, and the other end is a square rod; the round rod end of the lever is folded down, and a rubber roller is installed on the folded end; The rubber roller can rotate along the finger; The square rod end of the dial finger is installed inside the track on the inner wall of the tracked cylinder; The rotor is installed at the square rod end; one end of the rotor is connected to the square rod end of the shift finger, and the other end is placed in the groove on the spatial slide. The spatial slide and the central fixed shaft are fixed in place, while the tracked cylinder rotates around the central fixed shaft under the drive of the driven gear disk; During rotation, the rotor slides along the groove on the spatial slide, thereby driving the dial finger in the track cylinder to slide along the track on the inner wall of the track cylinder; The control system includes: a development board, a stepper motor driver, and a stepper motor; The development board and stepper motor driver are mounted on the upper surface of the support plate of the main frame; the stepper motor is mounted on the motor mounting base, and the motor shaft is connected to the drive gear shaft via a coupling.

2. The front-mounted grapevine support device as described in claim 1, characterized in that, The hydraulic lifting frame includes: a mounting base, a hydraulic cylinder, a lifting frame frame, a sprocket, a chain, a fixed base, a slide rail, and a slider; The mounting base is fixedly connected to the front counterweight bracket of the tractor; The hydraulic cylinder is hinged to the upper surface of the mounting base; A circular shaft passes through the top of the hydraulic cylinder, and sprockets are installed at both ends of the circular shaft. Bearings are installed between the sprockets and the circular shaft, and the sprockets can rotate around the circular shaft. One end of the chain is fixed to the upper surface of the mounting base by a fixing seat, and the other end passes around the sprocket and is connected to the slider. The slide rail is fixedly connected to the front surfaces of both sides of the lifting frame; the slide rail on the slider cooperates with the slide rail and can slide up and down along the slide rail.

3. The front-mounted grapevine support device as described in claim 2, characterized in that, A limiting rod is installed below the crossbeam on the lifting frame to limit the extreme position of the hydraulic cylinder extension, thereby controlling the lifting distance of the slider; a limiting rod is installed on the mounting base directly below the slider to limit the lower limit position of the slider.

4. The front-mounted grapevine support device as described in claim 1, characterized in that, The main frame includes: a main frame frame, a motor strut, a support plate, a motor mounting base, a T-shaped support, support wheels, support wheel seats, and a central fixed shaft; The main frame is fixedly connected to the slider of the hydraulic lifting frame. A support plate is installed on the lower surface of the motor support rod; The motor support rod is fixedly connected to the upper crossbeam of the main frame at both ends to support the motor mounting base; The motor mounting bracket is fixed to the upper surface of the motor support rod and is used to mount the stepper motor; The T-shaped support is fixed to the two horizontal support beams of the main frame to support the central fixed shaft; a flange is fixed to one end of the T-shaped support and the bottom of the central fixed shaft respectively, and the two flanges are fixedly connected to position the central fixed shaft. The installation angle of the central fixed shaft can be adjusted by the relative position of the two flanges; The main frame is mounted on the slider of the hydraulic lifting frame.

5. The front-mounted grapevine support device as described in claim 1, characterized in that, The transmission system also includes: a coupling, a circular bearing with a boss, a drive gear shaft, a driven gear disc, a gear disc base, a bearing end cover, and several bearings. The circular bearing with a boss is fixedly installed on the lower surface of the support plate of the main frame section; The drive gear shaft passes through a circular bearing with a boss and is connected to a coupling above the support plate of the main frame. The gear on the drive gear shaft meshes with the gear on the driven gear disk, and the rotation of the drive gear shaft drives the driven gear disk to rotate. The driven gear disk is fixedly connected to the gear disk base; The gear disk base is connected to the central fixed bottom via a bearing, allowing the gear disk base to rotate around the central fixed axis. The gear disk base is fixedly connected to the wall of the rail-mounted cylindrical tube; The space slide is mounted on the central fixed shaft of the main frame section, and the two are positioned by a keyway. The inner and outer surfaces of the top of the rail cylinder are both equipped with thrust ball bearings, which are used together for axial positioning of the rail cylinder. The bearing end cap is installed at the end of the central fixed shaft and is used to position the bearing.

6. The front-mounted grapevine support device as described in claim 5, characterized in that, Two slide rails are symmetrically arranged on the inner wall of the tracked cylinder for axial sliding of the finger.

7. The front-mounted grapevine support device as described in claim 1, characterized in that, The grooves on the spatial slide are symmetrically distributed along the axial plane. When the machine is in operation, the two fingers mounted on the grooves move in opposite directions. The axial span of the groove on the spatial slide is the extension length of the finger. The timing of the extension and retraction of the finger can be controlled by changing the installation angle of the space slide and controlling the relative position of the groove.

8. A tractor, characterized in that, The tractor cab is equipped with a control handle, which has a control button for controlling the working status of the hydraulic cylinder and a knob for controlling the motor speed. The tractor front counterweight bracket is fixedly connected to a front-mounted grapevine finger-supporting device as described in any of claims 1-7.

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