A light and simple vibrating harvester

Abstract

The patent provides a light and simple vibration picker, which can surround and hold the tree trunk at multiple points, has simple structure and electric power assistance, and can be used in picking environment such as slope and hill. It comprises a vehicle body and a vibration holding mechanism. The vehicle body comprises an H-shaped bottom composed of two longitudinal beams and a cross beam. The rear end of the longitudinal beam is provided with a driving wheel, and the front end of the longitudinal beam is provided with a universal wheel. Two upward and downward extending guide rods are fixed to the upper part of the rear part of the two longitudinal beams. A suspension platform is located above the upper part between the front part of the two longitudinal beams. The rear part of the suspension platform is fixed to a sliding frame, which is slidingly arranged on the guide rods. A lifting driving device for driving the suspension platform or the sliding frame to lift up and down relative to the guide rods is connected with the suspension platform or the sliding frame. A vibration holding mechanism for holding and exciting the tree trunk is suspended on the driving suspension platform through a flexible rope. The vibration holding mechanism comprises a holding device at the front part and an exciting device at the rear part.

Description

Technical Field

[0001] This patent relates to a vibratory harvester, and more particularly to a lightweight and simple vibratory harvester suitable for various harvesting environments. Background Technology

[0002] my country's fruit tree industry is well-developed, but most trees are planted in mountainous and hilly areas. Due to the rugged terrain and tall trees, harvesting is difficult, inefficient, time-consuming, and costly. Currently, there are two main methods: manual harvesting and machine harvesting. Manual harvesting mainly involves using tree ladders, powered lifting platforms, etc., and using wooden sticks or bamboo poles to knock the branches containing the fruit or directly striking the fruit to make it fall. Manual harvesting is very dangerous for harvesters, and it can damage branches and buds, affecting next year's yield. It does not effectively improve harvesting efficiency or reduce labor costs. Mechanized harvesting includes vibratory fruit harvesters. Patent application CN218042575U discloses a walnut vibratory harvester driven by a diesel agricultural vehicle. Although it reduces labor to some extent, the overall mechanical structure is complex and the machine is huge, resulting in poor working ability in rugged mountainous areas. Patent application CN218868742U discloses a trunk vibratory clamping device for fruit tree harvesting. The working radius is fixed, and the clamping part cannot adapt to fruit trees of various diameters.

[0003] Chinese patent CN113906905A discloses a clamping mechanism and working method for a fruit vibrating harvester, including a frame and a pair of clamping cylinders symmetrically arranged on the frame, with the piston rods of the two clamping cylinders facing each other. The ends of the piston rods of the two clamping cylinders are rotatably connected to corresponding clamping plates. The clamping working surface of the clamping plate has an arc-shaped structure to cooperate with the tree trunk being clamped. The above mechanism uses the opposing clamping cylinders on both sides to drive the arc-shaped clamping plates to clamp the tree trunk. However, theoretically, the two arc-shaped clamping plates only have two contact points with the tree trunk, which cannot effectively limit vibration in the direction perpendicular to the clamping direction. Furthermore, the above mechanism requires two cylinders symmetrically to prevent vibration, resulting in a bulky and cumbersome clamping device structure. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this patent provides a lightweight and simplified vibratory harvester. It can quickly change the diameter of the annular part formed by the working head of the clamping device used to clamp the trunk or branches, and can quickly clamp the trunk or branches, achieving multi-point surrounding clamping of the trunk or branches. It can vibrate large fruit trees, and has a wide range of excitation frequencies. It can replace manual harvesting, has high operating efficiency, simple structure, electric assistance, and can be used in harvesting environments such as slopes and hills.

[0005] To achieve the above technical objectives, the technical solution adopted in this patent is as follows:

[0006] A lightweight vibratory harvester includes a vehicle body 1 and a vibratory clamping mechanism 3. The vehicle body 1 includes an H-shaped bottom consisting of two longitudinal beams 1-1 and a crossbeam 1-2 connecting the two longitudinal beams. A drive wheel 5 is provided at the rear end of the longitudinal beams, and a caster wheel 4 is provided at the front end of the longitudinal beams. The lower ends of two vertically extending guide rods 1-3 are fixed above the rear of the two longitudinal beams. A suspension platform 2 is located above the front of the two longitudinal beams 1-1, and the rear of the suspension platform 2 is fixed on a sliding frame 2-1. The sliding frame 2-1 is slidably mounted on the guide rods 1-3. A lifting drive device for driving the suspension platform 2 or the sliding frame 2-1 to move up and down relative to the guide rods 1-3 is connected to the suspension platform 2 or the sliding frame 2-1. The vibratory clamping mechanism 3, which clamps the tree trunk and excites the tree trunk, is suspended on the drive suspension platform 2 by a flexible rope. The vibratory clamping mechanism 3 includes a clamping device 3-1 at the front and an excitation device 3-2 at the rear.

[0007] The aforementioned lightweight vibratory harvester has a lifting drive device including a lifting hydraulic cylinder 9, a chain 10, and a sprocket 11. The lifting hydraulic cylinder 9 is located at the rear of the suspension platform 2. The cylinder body of the lifting hydraulic cylinder 9 is fixed to the vehicle body. The upper end of the push rod at the top of the cylinder is equipped with a rotating sprocket 11. One end of the chain 10 that passes around the sprocket 11 is fixed to the vehicle body, and the other end is fixed to the suspension platform 2 or the sliding frame 2-1.

[0008] In the aforementioned lightweight vibratory harvester, two rotating clamping wheels 2-2 are installed above the sliding frame 2-1, and a rotating backrest wheel 2-3 is installed at the lower front of the sliding frame 2-1. The guide rod 1-3 passes between the two clamping wheels 2-2 and contacts the outer peripheral surfaces of the two clamping wheels 2-2. The outer peripheral surface of the backrest wheel 2-3 contacts the guide rod 1-3.

[0009] The aforementioned lightweight vibratory harvester comprises a clamping device consisting of a fixed clamping plate 25, a fixed clamping plate folding plate 24, a base plate 40, a movable clamping plate 23, a clamping hydraulic cylinder 20, a movable clamping plate base 36, and a clamping hydraulic cylinder base 37. The fixed clamping plate 25, the movable clamping plate base 36, and the clamping hydraulic cylinder base 37 are respectively arranged on the main support plate 19. The fixed clamping plate 25 has a fixed clamping plate folding plate 24 at its head, which is detachably connected to the fixed clamping plate 25 via two pins 38. The movable clamping plate 23 and the movable clamping plate base 36 are connected via pins 38. The clamping hydraulic cylinder 20 is connected to the clamping hydraulic cylinder base 37 by a pin. The clamping hydraulic cylinder push rod 21 of the clamping hydraulic cylinder 20 is fixed to the clamping hydraulic cylinder push rod connector 22. The clamping hydraulic cylinder push rod connector 22 and the moving clamping plate 23 are detachably connected by a pin that can be inserted into different holes on the moving clamping plate 23. When the moving clamping plate 23 is driven by the clamping hydraulic cylinder 20 and approaches the fixed clamping plate folding plate 24, the fixed clamping plate 25, the fixed clamping plate folding plate 24, the base plate 40, and the moving clamping plate 23 form a quadrilateral or pentagon.

[0010] The aforementioned lightweight vibratory harvester includes a vibration device 3-2 comprising a power unit, a transmission component, and a vibration excitation component. The power unit is a gasoline engine 15. The transmission component includes a reducer 30, a small pulley 17, a belt 28, and a large pulley 26. The vibration excitation component includes a vibration housing, a flange ring 32, a bearing housing 31, an eccentric block 33, a tapered roller bearing, and a vibration shaft 34. The reducer input port is connected to the gasoline engine 15 via a reducer adapter, and the reducer output port is connected to the small pulley 17 via a key through the reducer output shaft. The small pulley 17 is connected to the large pulley 26 via a belt. The eccentric block 33 is arranged on the excitation shaft 34, and the eccentric block 33 and the excitation shaft 34 are arranged in the excitation housing. The excitation housing is connected to the end cover of the excitation housing via a flange ring 32. The end cover of the excitation housing presses against the tapered roller bearing that mates with the excitation shaft 34. The other end of the excitation shaft 34 is placed outside the excitation housing and connected to the large pulley 26 via a key. The excitation housing is fixed on the main support plate 19, and a shock-absorbing pad is provided between the gasoline engine 15 and the main support plate 19.

[0011] The aforementioned lightweight vibratory harvester includes a clamping device comprising a base, a movable swing arm, a hydraulic cylinder, and a fixed clamp; the base is fixedly mounted on the main support plate; the fixed clamp is fixedly connected to the base, and the rear end of the movable swing arm and the cylinder body of the hydraulic cylinder are hinged to the base; the movable swing arm is located between the fixed clamp and the hydraulic cylinder; the movable swing arm and the fixed clamp are connected by a spring, which, under normal conditions, causes the movable swing arm to swing clockwise relative to the base, thereby bringing the front end of the movable swing arm closer to the fixed clamp; the middle part of the movable clamp is hinged to the front end of the movable swing arm, and the end of the movable clamp near the hydraulic cylinder is hinged to the end of the piston rod of the hydraulic cylinder; when the piston rod of the hydraulic cylinder extends... When the hydraulic cylinder piston rod retracts, causing the moving clamp to swing clockwise relative to the moving swing arm, the other end of the moving clamp approaches the fixed clamp; when the hydraulic cylinder piston rod retracts, causing the moving clamp to swing counterclockwise relative to the moving swing arm, the other end of the moving clamp moves away from the fixed clamp; a limit block is set on the moving swing arm to limit the maximum angle of the moving clamp's counterclockwise swing relative to the moving swing arm; when the moving clamp swings counterclockwise relative to the moving swing arm to the maximum angle, the moving clamp contacts the limit block, and the moving clamp cannot swing counterclockwise relative to the moving swing arm. At this time, the hydraulic cylinder piston rod continues to retract, and the moving swing arm overcomes the tension of the spring and swings counterclockwise relative to the base.

[0012] The aforementioned lightweight vibratory harvester has two obtuse-angled clamping parts at the front of the fixed clamp away from the base.

[0013] The aforementioned lightweight vibratory harvester has a slot on the clamping part at the front end of the fixed clamp. The width of the slot is not less than that of the movable clamp, and the movable clamp can extend into the slot.

[0014] The aforementioned lightweight vibratory harvester uses tension gas springs.

[0015] The aforementioned lightweight vibratory harvester has a drive wheel 5 equipped with a hub motor; the upper end of the guide rod has a handle extending upward and backward; a motor control box, a power supply box, a hydraulic pump station, and a hydraulic control box are installed on the vehicle body at the rear of the sliding frame. The motor control box contains a relay and a drive wheel controller, the power supply box contains a lithium battery, and the hydraulic pump station is connected to the clamping hydraulic cylinder and the lifting hydraulic cylinder. The hydraulic pump station is operated and controlled by the hydraulic control box.

[0016] The beneficial effects of this patent are:

[0017] The vehicle body 1 has an H-shaped bottom, and the suspension platform 2 is located above the front of the two longitudinal beams 1-1. This allows the vibration clamping mechanism 3, suspended on the suspension platform 2, to rise and fall with it. In particular, the bottom of the vibration clamping mechanism 3 can descend to near ground level, making it ideal for fruit trees with short, thick trunks, large crown diameters, and easily branching trunks. Ordinary motor vehicle chassis are too high to approach the trunks of such fruit trees. In this invention, the longitudinal beams at the front and rear ends are only equipped with drive wheels 5 and casters 4, resulting in a lower vehicle height, allowing it to approach trunks with short trunks and large crown diameters. Furthermore, this invention employs a lifting drive device composed of a lifting hydraulic cylinder 9, a chain 10, and a sprocket 11. The piston rod of the lifting hydraulic cylinder 9 extends upwards or descends by a height h, which raises or lowers the vibration clamping mechanism 3 by a height h. Since the lifting hydraulic cylinder 9 is located at the rear of the suspension platform 2, this effectively reduces the overall height of the harvester. Furthermore, this invention can automatically move or be pushed when both drive wheels 5 and swivel wheels 4 are on the ground (four wheels on the ground), or when only two drive wheels 5 are on the ground (two wheels on the ground) for pushing or pulling. When moving with only two wheels on the ground, the overall height of the machine is significantly reduced, allowing the operator to hold the handle and use the drive wheels for propulsion, saving operator effort and achieving electric assistance. This invention has a simple overall structure, high mobility and flexibility, and can operate in mountainous, sloping, and hilly areas, making it more suitable for low-growing fruit trees.

[0018] It features a wide frequency range and convenient vibration force adjustment. The engine has a maximum speed of 13,000 rpm, and the reducer has a reduction ratio of 1:5. When using a 1:1.6 pulley, the vibration frequency range is 6.3-27 Hz. The vibration block consists of five eccentric blocks weighing 2.96 kg each, and the maximum vibration force can reach 20 kN. The number of eccentric blocks can be easily removed to accommodate the required vibration force for different diameters and types of fruit trees.

[0019] Rapid clamping. In Example 1, the clamping hydraulic cylinder 20 in the clamping device is detachably connected to the movable clamping plate via a pin that can be inserted into different holes. The movable clamping plate and its base are connected by a pin, allowing the movable clamping plate to rotate on the base to accommodate tree trunks of different diameters. The fixed clamping plate is fixedly connected to the main support plate. During clamping operations, the fixed clamping plate is first brought close to the tree trunk, and then the folded plate is fixed to the fixed clamping plate to increase the overall enclosure of the tree trunk (the folded plate is not initially installed, or it is only rotatably connected to the fixed clamping plate via a pin and the folded plate is in an outward folded state, while the working head for clamping the tree trunk or branches is in an open state to access tree trunks of larger diameters). The clamping hydraulic cylinder pushes the movable clamping plate, causing the tree trunk to be enveloped by the fixed clamping plate, the movable clamping plate, and the base plate, thus completing rapid clamping.

[0020] Flexible clamping. The contact points between the clamping device and the tree trunk or branches, such as the fixed clamping plate, moving clamping plate, and base plate, are secured to the clamping rubber pads with countersunk bolts. This increases the contact area with the tree, reducing damage to the bark and increasing friction, making the clamping device less likely to detach from the tree. After the clamping device clamps the tree trunk but before the vibration excitation device activates, the height of the suspension platform can be appropriately lowered, allowing the flexible rope to remain slack. This prevents vibration from being transmitted to the vehicle body, suspension platform, and sliding frame, effectively extending the operational reliability and service life of these components.

[0021] It can quickly change the diameter of the ring-shaped part formed by the working head of the clamping device for clamping tree trunks or branches and can quickly clamp tree trunks or branches, realizing multi-point surrounding clamping of tree trunks or branches.

[0022] In Embodiment 1, when the movable clamping plate 23 is bent, the fixed clamping plate 25, the fixed clamping plate folded plate 24, the two sides of the bent movable clamping plate 23, and the bottom plate 40 form a pentagon; when the movable clamping plate 23 is straight, the fixed clamping plate 25, the fixed clamping plate folded plate 24, the movable clamping plate 23, and the bottom plate 40 form a quadrilateral. This allows the tree trunk or branches to be completely enclosed, achieving a surround-type clamping effect.

[0023] The clamping device is suitable for a wide range of tree trunk thicknesses. The clamping device in Example 1 is used to clamp tree trunks. There are three adjustable insertion holes on the movable clamping plate. The insertion holes are connected to the clamping hydraulic cylinder push rod connector through pins to form a detachable quick installation method, so as to accommodate tree trunks or branches with diameters from 15cm to 25cm.

[0024] The clamping device in Example 2, with its fixed clamp, movable clamp, and movable swing arm working together, achieves a tighter circumferential clamping of the tree trunk, reducing movement of the clamping device during vibration and minimizing damage to the trunk surface. The rotational coordination between the fixed clamp, movable clamp, and movable swing arm enables three-point clamping (when the fixed clamp has only one straight clamping part away from the base) and four-point clamping (when the fixed clamp has two obtuse-angled clamping parts away from the base) of irregular tree trunks, expanding its application scenarios and improving clamping performance. The use of a single hydraulic cylinder for circumferential clamping and releasing the clamping action further simplifies the mechanism structure, making it easy to control, simple in structure, and low in cost.

[0025] Lightweight and portable. Utilizing a high-speed, high-power, and lightweight STIHL MS 881 gasoline engine, along with a 1:5 gearbox and belt drive, the entire vibration clamping device is suspended on a platform. The mechanism is lightweight and convenient, while providing continuous and stable power output, making it ideal for complex terrain environments. A flexible connection is formed between the gasoline engine (including the gearbox) and the main support plate using shock-absorbing pads, preventing the vibration force from the excitation mechanism from being transmitted to the gasoline engine, thus avoiding damage to the engine and the possibility of operators being unable to operate the machine due to prolonged hand vibration. The belt drive mitigates the impact on the excitation mechanism when the gasoline engine starts and prevents the excitation force from being transmitted to the gearbox and gasoline engine. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the simplified vibratory harvester of Example 1;

[0027] Figure 2 This is another overall structural diagram of the simplified vibratory harvester of Example 1;

[0028] Figure 3 This is an overall structural diagram of the vibration clamping mechanism in Example 1;

[0029] Figure 4 This is a structural diagram of the excitation device and other components in Example 1;

[0030] Figure 5 This is an overall structural diagram of the clamping device in Example 1;

[0031] Figure 6 This is an overall structural diagram of the clamping device in Embodiment 1 (clamping state);

[0032] Figure 7 This is an overall structural diagram of the clamping device in Embodiment 1 (clamping state);

[0033] Figure 8 This is an overall structural diagram of the vibration clamping mechanism in Example 1;

[0034] Figure 9 This is another overall structural diagram of the simplified vibratory harvester of Example 1;

[0035] Figure 10 This is a structural diagram showing the connection between the suspended platform and the vibration clamping mechanism in the simplified vibratory harvester of Example 2;

[0036] Figure 11 , 12 13 and 14 are schematic diagrams showing the different states of the clamping device in Example 2 as it changes from the open state to the clamped state.

[0037] In the diagram, the vehicle body is 1, longitudinal beam 1-1, cross beam 1-2, guide rod 1-3, and support rod 1-4.

[0038] 4. Casters; 5. Drive wheels; 6. Motor control box; 7. Hydraulic pump station; 12. Control handle; 13. Power supply box; 14. Lithium battery.

[0039] Suspension platform 2, sliding frame 2-1, clamping wheel 2-2, backrest wheel 2-3, lifting hydraulic cylinder 9, chain 10, sprocket 11.

[0040] Vibration clamping mechanism 3, clamping device 3-1, excitation device 3-2, flexible rope 3-3.

[0041] 15. Gasoline engine; 16. Reducer bracket; 17. Small pulley; 18. Vibration damping pad; 19. Main support plate; 27. Vibration excitation component; 28. Belt; 29. ​​Tensioner pulley; 30. Reducer; 31. Bearing housing; 32. Flange ring; 33. Eccentric block; 34. Vibration shaft.

[0042] Clamping hydraulic cylinder 20, clamping hydraulic cylinder push rod 21, clamping hydraulic cylinder push rod connector 22, moving clamping plate 23, fixed clamping plate folding plate 24, fixed clamping plate 25, large pulley 26, suspension block 35, moving clamping plate base 36, clamping hydraulic cylinder base 37, pin shaft 38, clamping rubber pad 39, base plate 40.

[0043] Base 61; movable swing arm 62; hydraulic cylinder 63; fixed clamp 64; movable clamp 65; hydraulic cylinder piston rod 66; limit block 67; tension gas spring 68; clamping part 641; slot 642; clamping section 651; drive section 652. Detailed Implementation

[0044] The specific embodiments of this patent will be further described below with reference to the accompanying drawings. Example 1

[0045] A lightweight and simple vibratory harvester includes a vehicle body 1, a suspension platform 2, and a vibratory clamping mechanism 3.

[0046] The vehicle body 1 comprises two longitudinal beams 1-1 and a crossbeam 1-2 connecting the two longitudinal beams, forming an H-shaped bottom. Drive wheels 5 with drive motors are located at the rear ends of the longitudinal beams, and casters 4 are located at the front ends. The lower ends of two vertically extending guide rods 1-3 and two vertically extending support rods 1-4 are fixed above the rear of the two longitudinal beams. The guide rods 1-3 are located in front of the support rods 1-4. The guide rods 1-3 and support rods 1-4 are connected at their upper ends to form a single unit, extending upwards and backwards to form a handle. A control handle 12 is mounted on the handle. The vehicle body 1 is sequentially equipped with a motor control box 6, a power supply box 13, a hydraulic pump station 7, and a hydraulic control box. The motor control box 6 houses a relay and a drive wheel controller. The power supply box 13 houses a lithium battery 14. The hydraulic pump station 7 is connected to the clamping hydraulic cylinder 20 (Embodiment 1) or the hydraulic cylinder 63 (Embodiment 2) and the lifting hydraulic cylinder 9. The hydraulic pump station 7 is operated and controlled by the hydraulic control box. The power supply box 13 is fixed in the middle of the vehicle body 1, and the lithium battery 14 is fixed in the power supply box 13. The lithium battery 14 supplies power to the drive wheel controller, the control handle 12, and the hydraulic pump station 7. By turning the control handle 12, the drive wheel 5 is rotated, thereby assisting in the movement of the vehicle body 1. The caster wheels 4 are used for turning or U-turns. The hydraulic control box can control the solenoid valves on the hydraulic pump station 7, thereby controlling the lifting hydraulic cylinder 9 and the clamping hydraulic cylinder 20 (Embodiment 1) or the hydraulic cylinder 63 (Embodiment 2). Four reset switches are located on the hydraulic control box. The hydraulic pump station is equipped with two sets of solenoid valves, the power supply box is equipped with two sets of lithium batteries, and the motor control box is equipped with two sets of motor control units.

[0047] The lifting hydraulic cylinder 9, chain 10, sprocket 11, and sprocket frame constitute the lifting drive device. The bottom of the lifting hydraulic cylinder 9 is fixedly connected to the vehicle body 1. The sprocket 11 is rotatably mounted on the sprocket frame. The sprocket frame is fixedly connected to the piston rod end of the lifting hydraulic cylinder 9 by bolts. One end of the chain 10, which passes over the sprocket 11, is fixedly connected to the vehicle body 1, and the other end is fixedly connected to the sliding frame 2-1. The rear of the suspended platform 2 is fixed to the sliding frame 2-1. Two rotating clamping wheels 2-2 are installed above the sliding frame 2-1, and a rotating backrest wheel 2-3 is installed at the front of the lower part of the sliding frame 2-1. The guide rod 1-3 passes between the two clamping wheels 2-2 and contacts the outer circumferential surfaces of the two clamping wheels 2-2. The outer circumferential surface of the backrest wheel 2-3 contacts the guide rod 1-3. The suspended platform 2 is equipped with flexible ropes such as suspension chains and wire ropes connected to the vibration clamping mechanism 3. The hydraulic control box controls the opening and closing of the solenoid valve of the hydraulic pump station, causing the lifting hydraulic cylinder 9 to rise or fall. The lifting hydraulic cylinder push rod is connected to the sprocket frame, causing the sprocket frame to rise or fall, and the sprocket 11 to rise or fall. Since one end of the chain 10 is fixed to the vehicle body, the other end drives the suspension platform 2 and the sliding frame to rise or fall along the guide rod. The vibration clamping mechanism 3 is connected to the suspension platform 2 through flexible ropes such as iron chains, so the rise or fall of the entire vibration clamping mechanism 3 can be adjusted to adjust the clamping height.

[0048] The vibration clamping mechanism 3 includes a front clamping device 3-1 and a rear excitation device 3-2. The excitation device 3-2 includes a power unit, transmission components, and excitation components. The power unit is a STIGER MS881 gasoline engine 15. The transmission components include a reducer 30, a small pulley 17, a belt 28, a tensioner 29, and a large pulley 26. The excitation components include an excitation housing, a flange ring 32, a bearing housing 31, an eccentric block 33, a tapered roller bearing, and an excitation shaft 34, etc.

[0049] The reducer bracket 16 is fixed to the side of the gasoline engine 15 housing. The reducer 30 is fixed to the reducer bracket 16. The reducer input port is connected to the gasoline engine 15 through a reducer adapter. The reducer output port is connected to the small pulley 17 via the reducer output shaft and a key. An eccentric block 33 is arranged on one end of the excitation shaft. The eccentric block 33 and the excitation shaft 34 are arranged in the excitation housing. The excitation housing is connected to the excitation housing end cover via a flange ring 32. The excitation housing end cover presses against the tapered roller bearing that mates with the excitation shaft 34. The other end of the excitation shaft 34 is placed outside the excitation housing and connected to the large pulley 26 via a key. The small pulley 17 is connected to the large pulley 26 via a belt. The excitation housing is fixed to the main support plate 19 via the excitation housing support plate. A front damping pad 18, a rear damping pad 18, and an engine damping pad 18 are provided between the bottom of the gasoline engine housing 15 and the main support plate 19. These pads are fixed to the front side of the reducer bracket, the rear side of the reducer bracket, and the lower side of the gasoline engine.

[0050] The clamping device 3-1 has two different structures, see Embodiment 1 and Embodiment 2.

[0051] In this embodiment 1, the clamping device 3-1 consists of a fixed clamping plate 25, a fixed clamping plate folding plate 24, a base plate 40, a movable clamping plate 23, a clamping hydraulic cylinder 20, a movable clamping plate base 36, a clamping hydraulic cylinder base 37, and a clamping rubber pad 39. The fixed clamping plate 25 is fixed to the main support plate 19, and the fixed clamping plate folding plate 24 is detachably connected to the front end of the fixed clamping plate 25 via two pins 38. The movable clamping plate base 36 and the clamping hydraulic cylinder base 37 are fixedly connected to the main support plate 19. The movable clamping plate 23 is connected to the movable clamping plate base 36 via pins 38, and the movable clamping plate 23 can rotate around the pins on the movable clamping plate base 36. The clamping hydraulic cylinder 20 is connected to the clamping hydraulic cylinder base 37 via pins, and the clamping hydraulic cylinder 20 can rotate around the pins on the clamping hydraulic cylinder base 37. The clamping hydraulic cylinder 20 has a clamping hydraulic push rod 21 fixed to a clamping hydraulic cylinder push rod connector 22. The clamping hydraulic cylinder push rod connector 22 is connected to the movable clamping plate 23 via a pin. This pin is detachably connected to the movable clamping plate 23 and can be connected to different holes on the movable clamping plate 23 to adjust the clamping range. When the clamping hydraulic cylinder push rod 21 extends or retracts, the angle of the movable clamping plate can be changed, while the fixed clamping plate 25 and the fixed clamping plate folding plate 24 remain fixed, thereby clamping or releasing the tree trunk. A clamping rubber pad 39 is provided on the side of the movable clamping plate 23 that contacts the tree trunk, on the side of the fixed clamping plate 25 and the fixed clamping plate folding plate 24 that contacts the tree trunk, and on the side of the base plate 40 that contacts the tree trunk.

[0052] In use, first move the frame 1 to a suitable position so that the tree trunk is between the fixed clamping plate 25 and the movable clamping plate 23. Adjust the lifting hydraulic cylinder 9 so that the vibration clamping mechanism 3 reaches the target excitation height. First, bring the fixed clamping plate 25 close to the tree trunk, and then fix the fixed clamping plate folding plate 24 to the fixed clamping plate 25 through two pins 38 to increase the overall envelopment of the tree trunk (the fixed clamping plate folding plate 24 is not installed at the beginning, or it is only rotatably connected to the fixed clamping plate 25 through one pin 38 and the fixed clamping plate folding plate 24 is in an outward folded state, the fixed clamping plate 25 and the movable clamping plate 23 are in a folded state). (With the 3 plates in the open state to allow entry of a larger diameter trunk), adjust the clamping hydraulic cylinder 20 to clamp, and push the moving clamping plate 23 through the clamping hydraulic cylinder 20 so that the trunk is wrapped by the fixed clamping plate 25, the fixed clamping plate folding plate 24, the moving clamping plate 23 and the bottom plate 40 (when the moving clamping plate 23 is bent, the fixed clamping plate 25, the fixed clamping plate folding plate 24, the two sides of the bent moving clamping plate 23 and the bottom plate 40 form a pentagon; when the moving clamping plate 23 is straight, the fixed clamping plate 25, the fixed clamping plate folding plate 24, the moving clamping plate 23 and the bottom plate 40 form a quadrilateral), thus completing the clamping.

[0053] Power is transmitted from the rotating gasoline engine 15, which reduces speed and increases torque through the reducer 30, driving the small pulley 17, which in turn drives the large pulley 26 via the belt 28, thus causing the eccentric block 33 to rotate and generate excitation force. This harvesting device can obtain ideal vibration frequency and excitation force, has strong environmental adaptability, can provide continuous energy input, has low labor intensity, high harvesting efficiency, and is suitable for use in mountainous areas, with high harvesting efficiency, good stability, and convenient mobility. Example 2

[0054] The main difference between Example 2 and Example 1 lies in the clamping device. The clamping device 3-1 in Example 2 is described below.

[0055] The clamping device 3-1 in Embodiment 2 includes a base 61, a movable swing arm 62, a hydraulic cylinder 63, and a fixed clamp 64. The base 61 is fixed to the main support plate 19. The movable swing arm 62 and the hydraulic cylinder 63 can rotate relative to the base 61 around the connection point (pin) with the base. The right end of the middle of the movable clamp 65 is rotatably connected (hinged) to the front end of the movable swing arm 62. The hinge at the upper end of the movable clamp 65 and the movable swing arm 62 divides the movable clamp 65 into two sections, namely the clamping section 651 and the driving section 652. The end of the piston rod 66 of the hydraulic cylinder is rotatably connected (hinged) to the right end of the driving section 652 of the movable clamp 65.

[0056] The rear end of the fixed clamp 64 is fixedly connected to the base 61; the front part of the fixed clamp 64 away from the base has two clamping parts 641 with obtuse angles. A slot 642 is opened on one of the clamping parts 641 at the front end of the fixed clamp, the width of the slot is not less than the width of the clamping section 651, and the clamping section 651 can extend into the slot 642.

[0057] The clamping working surface of the fixed clamp 64 641 has an obtuse angle structure to mate with the tree trunk being clamped; the movable swing arm 62 is connected to the fixed clamp 64 by two tension gas springs 8. When the hydraulic cylinder piston rod 66 extends, causing the movable clamp 65 to swing clockwise relative to the movable swing arm 62, the left end of the clamping section 651 approaches the fixed clamp 64. When the hydraulic cylinder piston rod 66 retracts, causing the movable clamp 65 to swing counterclockwise relative to the movable swing arm 62, the left end of the clamping section 651 moves away from the fixed clamp 64. A limiting block 67 is fixed on the movable swing arm 62 to limit the maximum angle of counterclockwise swing of the drive section 652 relative to the movable swing arm 62. When the movable clamp 65 swings counterclockwise to the maximum angle relative to the movable swing arm 62, the drive section 652 contacts the limiting block 67, and the movable clamp 65 can no longer swing counterclockwise relative to the movable swing arm 62. At this time, the hydraulic cylinder piston rod 66 continues to retract, and the movable swing arm 62 overcomes the tension of the tension gas spring 8 and swings counterclockwise relative to the base. The included angle structure formed by the movable swing arm 62 and the clamping section 651 is designed to cooperate with the clamped tree trunk.

[0058] Furthermore, the fixed clamp and the base are fixedly connected by welding. A clamping rubber pad is provided on the clamping working surface of the fixed clamp. The rear end of the movable swing arm is rotatably connected to the base via a pin and a sliding bearing; the movable swing arm is detachably mounted on the base. The front end of the movable swing arm is rotatably connected to the movable clamp via a pin and a sliding bearing. The movable clamp is rotatably connected to the movable rod end of the hydraulic cylinder via a pin and a sliding bearing. The cylinder body of the hydraulic cylinder is rotatably connected to the base via a pin and a sliding bearing. The hydraulic cylinder is detachably mounted on the base via its cylinder body. The two ends of the tension gas spring are fixed with bolts to protruding shafts rotatably mounted on the fixed clamp and the movable swing arm. Two opposing limiting blocks are provided on the inner side of the movable swing arm. Under the action of the tension gas spring, the movable swing arm is driven to a position close to the fixed clamp. The front end of the fixed clamp has a slot, and symmetrical clamping plates are provided on both sides of the slot. Reinforcing ribs are provided between the clamping plates and the fixed clamp. The fixed clamp, the movable swing arm, the movable clamp, and the base are all U-shaped.

[0059] The clamping process of the clamping device in Example 2 for clamping a tree trunk or branch includes the following steps:

[0060] In the first step, the piston rod of the hydraulic cylinder retracts, thereby driving the movable swing arm to swing outward counterclockwise and open. At the same time, under the action of the tension gas spring and the limiting block, the movable clamp contacts the limiting block, and the movable clamp and the movable swing arm remain relatively stationary, so that the clamping distance between the movable clamp and the fixed clamp reaches the maximum.

[0061] The second step is to align the clamping device with the tree trunk, so that the two clamping surfaces of the fixed clamp contact the tree trunk, and extend the piston rod of the hydraulic rod. The movable clamp and the movable swing arm swing clockwise inward. Under the influence of the tension gas spring and the limiting block, the movable clamp and the movable swing arm remain relatively stationary.

[0062] Third, after the movable clamp and movable swing arm swing inward clockwise until the movable swing arm contacts the tree trunk, the movable swing arm stops rotating inward. At this time, the piston rod of the hydraulic cylinder continues to extend, thereby driving the movable clamp to continue swinging inward clockwise relative to the movable swing arm until it clamps the tree trunk.

[0063] Fourth, after the excitation device has finished working, the piston rod of the hydraulic cylinder is retracted, thereby driving the moving clamp to rotate counterclockwise relative to the moving swing arm until the moving clamp contacts the limit block on the moving swing arm.

[0064] Fifth, the hydraulic cylinder piston rod continues to retract, thereby driving the movable clamp and the movable swing arm to open outward, moving the vibration clamping mechanism, so that the clamping device is detached from the tree trunk or branch.

[0065] The clamping device in Example 2, through the cooperation of a hydraulic cylinder and a tension gas spring, can achieve the function of clamping tree trunks, reducing the size of the clamping device and simplifying the structure of the motion control system. At the same time, through the rotational cooperation between the tension gas spring and the movable swing arm, the movable swing arm and the movable clamp, and the movable clamp and the hydraulic cylinder, a stable clamping function for irregular tree trunks is achieved, expanding the application scenarios and achieving good application results.

Claims

1. A lightweight and simple vibratory harvester, comprising a vehicle body (1) and a vibratory clamping mechanism (3), characterized in that: The vehicle body (1) includes an H-shaped bottom consisting of two longitudinal beams (1-1) and a crossbeam (1-2) connecting the two longitudinal beams; a drive wheel (5) is provided at the rear end of the longitudinal beams, and a caster wheel (4) is provided at the front end of the longitudinal beams; the lower ends of two vertically extending guide rods (1-3) are fixed above the rear of the two longitudinal beams; the suspension platform (2) is located above the front of the two longitudinal beams (1-1), and the rear of the suspension platform (2) is fixed on the sliding frame (2-1), which slides up and down. The guide rod (1-3) is dynamically set; the lifting drive device for driving the suspension platform (2) or sliding frame (2-1) to move up and down relative to the guide rod (1-3) is connected to the suspension platform (2) or sliding frame (2-1); the vibration clamping mechanism (3) for clamping the tree trunk and exciting the tree trunk is suspended on the drive suspension platform (2) by a flexible rope, and the vibration clamping mechanism (3) includes a clamping device (3-1) at the front and an excitation device (3-2) at the rear; The clamping device includes a base, a movable swing arm, a hydraulic cylinder, and a fixed clamp; the base is fixed on the main support plate; the fixed clamp is fixedly connected to the base, and the rear end of the movable swing arm and the cylinder body of the hydraulic cylinder are hinged to the base; the movable swing arm is located between the fixed clamp and the hydraulic cylinder; the movable swing arm and the fixed clamp are connected by a spring, and in normal operation, the spring causes the movable swing arm to swing clockwise relative to the base, thereby bringing the front end of the movable swing arm closer to the fixed clamp; the middle part of the movable clamp is hinged to the front end of the movable swing arm, and the end of the movable clamp near the hydraulic cylinder is hinged to the end of the piston rod of the hydraulic cylinder; when the piston rod of the hydraulic cylinder extends, it drives the movable clamp... When the movable clamp swings clockwise relative to the movable swing arm, the other end of the movable clamp approaches the fixed clamp; when the hydraulic cylinder piston rod retracts, causing the movable clamp to swing counterclockwise relative to the movable swing arm, the other end of the movable clamp moves away from the fixed clamp; a limit block is set on the movable swing arm to limit the maximum angle of the movable clamp's counterclockwise swing relative to the movable swing arm; when the movable clamp swings counterclockwise relative to the movable swing arm to the maximum angle, the movable clamp contacts the limit block, and the movable clamp cannot swing counterclockwise relative to the movable swing arm. At this time, the hydraulic cylinder piston rod continues to retract, and the movable swing arm overcomes the tension of the spring and swings counterclockwise relative to the base.

2. The lightweight and simplified vibratory harvester as described in claim 1, characterized in that: The lifting drive device includes a lifting hydraulic cylinder (9), a chain (10), and a sprocket (11). The lifting hydraulic cylinder (9) is located at the rear of the suspension platform (2). The cylinder body of the lifting hydraulic cylinder (9) is fixed on the vehicle body. A rotating sprocket (11) is installed at the upper end of the push rod at the top of the cylinder. One end of the chain (10) that passes around the sprocket (11) is fixed on the vehicle body, and the other end is fixed on the suspension platform (2) or the sliding frame (2-1).

3. The lightweight and simplified vibratory harvester as described in claim 1, characterized in that: Two rotating clamping wheels (2-2) are provided above the sliding frame (2-1), and a rotating backrest wheel (2-3) is provided at the lower front of the sliding frame (2-1). The guide rod (1-3) passes between the two clamping wheels (2-2) and contacts the outer peripheral surfaces of the two clamping wheels (2-2). The outer peripheral surface of the backrest wheel (2-3) contacts the guide rod (1-3).

4. The lightweight and simplified vibratory harvester as described in claim 1, characterized in that: The vibration excitation device (3-2) includes a power unit, a transmission component, and a vibration excitation component; the power unit is a gasoline engine (15), the transmission component includes a reducer (30), a small pulley (17), a belt (28), and a large pulley (26), and the vibration excitation component includes a vibration housing, a flange ring (32), a bearing housing (31), an eccentric block (33), a tapered roller bearing, and a vibration shaft (34). The reducer input port is connected to the gasoline engine (15) via a reducer adapter, and the reducer output port is connected to the small pulley (17) via a key via the reducer output shaft. The small pulley (17) is connected to the large pulley (26) via a belt. The eccentric block (33) is arranged on the excitation shaft (34). The eccentric block (33) and the excitation shaft (34) are arranged in the excitation housing. The excitation housing is connected to the end cover of the excitation housing via a flange ring (32). The end cover of the excitation housing presses against the tapered roller bearing that mates with the excitation shaft (34). The other end of the excitation shaft (34) is placed outside the excitation housing and connected to the large pulley (26) via a key. The excitation housing is fixed on the main support plate (19). A shock-absorbing pad is set between the gasoline engine (15) and the main support plate (19).

5. The lightweight and simplified vibratory harvester as described in claim 1, characterized in that: The fixed clamp has two obtuse-angled clamping parts at the front part away from the base.

6. The lightweight and simplified vibratory harvester as described in claim 5, characterized in that: A slot is provided on the clamping part at the front end of the fixed clamp, and the width of the slot is not less than that of the movable clamp, so that the movable clamp can extend into the slot.

7. The lightweight and simplified vibratory harvester as described in claim 1, characterized in that: The spring is a tension gas spring.

8. The lightweight and simplified vibratory harvester as described in any one of claims 1-7, characterized in that: The drive wheel is a drive wheel with a hub motor; the upper end of the guide rod has a handle rod that extends upward and backward; a motor control box, a power supply box, a hydraulic pump station, and a hydraulic control box are installed on the vehicle body at the rear of the sliding frame. The motor control box contains a relay and a drive wheel controller, the power supply box contains a lithium battery, and the hydraulic pump station is connected to the clamping hydraulic cylinder and the lifting hydraulic cylinder. The hydraulic pump station is operated and controlled by the hydraulic control box.

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