A variable pitch harvesting device

Abstract

The patent provides a shaking type variable distance harvesting device, which is small in size, light in quality, convenient to carry, wide in excitation frequency range, can replace manual picking, high in operation efficiency, simple in structure and can be used in picking environment such as slope and hill. The gasoline engine drives the eccentric block in the excitation mechanism to rotate through the planetary gear reducer and belt transmission device to generate excitation force. The reducer housing is fixed on the gasoline engine housing. The sun gear shaft is connected with the gasoline engine output shaft. One end of the reducer output shaft is a ring sleeve part, the other end extends out of the reducer housing and is connected with the driving pulley. The ring sleeve part surrounds the sun gear shaft. The planetary gear is rotatably arranged on the ring sleeve part of the reducer output shaft through the planetary gear shaft. The planetary gear is simultaneously engaged with the sun gear shaft outside and the inner ring fixed on the reducer housing. The driven pulley is connected with the transmission shaft in the excitation mechanism. The eccentric block is arranged on the transmission shaft.

Description

Technical Field

[0001] This patent relates to a vibration harvesting device, and more particularly to a convenient shaking harvesting device 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. Summary of the Invention

[0003] To address the shortcomings of the existing technologies, this patent provides a shaking-type variable-distance harvesting device. It can quickly change the diameter of the annular part formed by the gripping working head and can quickly grip the trunk or branches. It can shake large fruit trees, and is small in size and light in weight, making it easy to carry. It has a wide range of excitation frequencies, can replace manual harvesting, has high work efficiency, and a simple structure. It can be used in harvesting environments such as slopes and hills.

[0004] To achieve the above technical objectives, the technical solution adopted in this patent is as follows:

[0005] A vibrating variable-pitch harvesting device includes a power unit that drives an eccentric block in an excitation mechanism to rotate via a transmission mechanism, generating an excitation force. A main support plate is fixedly connected to the excitation mechanism, and a clamping device for holding tree trunks or branches is connected to the main support plate.

[0006] The power unit is the MS382 gasoline engine from STIHL, and the transmission mechanism includes a reducer with a transmission ratio of 1:3 to 1:7 and a belt drive.

[0007] The reducer is a planetary gear reducer. The reducer housing is fixed to the gasoline engine housing. The sun gear shaft is connected to the gasoline engine output shaft. One end of the reducer output shaft is a ring sleeve, and the other end of the reducer output shaft extends out of the reducer housing and is connected to the driving pulley in the belt drive. The ring sleeve surrounds the sun gear shaft. The planet gears are rotated on the ring sleeve on the reducer output shaft through the planet gear shaft. The planet gears simultaneously mesh externally with the sun gear shaft and internally with the internal gear ring fixed on the reducer housing. The driven pulley in the belt drive is connected to the drive shaft in the vibration mechanism, and the eccentric block is set on the drive shaft.

[0008] The aforementioned vibrating variable-pitch harvesting device includes a clamping device comprising a base, clamping bolts, clamping plates, and a chain. The chain consists of multiple chain plates hinged together by pins. The two ends of the main support plate are respectively connected to one end of the chain and the base. The base is rotatably mounted on the main support plate. The pins are detachably connected to the clamping plates. The clamping plates are threadedly connected to the clamping bolts. The clamping bolts are rotatably mounted on the base around their axes. When the clamping bolts are rotated, the axial position of the clamping plates on the clamping bolts can be changed, thereby adjusting the circumference of the annular portion formed by the connected base, clamping bolts, clamping plates, chain, and main support plate to clamp or loosen the trunk or branches.

[0009] In the aforementioned vibrating variable-pitch harvesting device, chain plates extend from both ends of the pin shaft, and two hooks are provided on the clamping plate. When either end of the pin shaft is inserted into the two hooks, the chain is connected to the clamping plate; when the pin shaft is removed from the hooks, the chain is separated from the clamping plate.

[0010] The aforementioned vibrating variable-pitch harvesting device has a C-shaped hook with a notch around its perimeter, through which the pin can be inserted into or removed from the C-shaped hook.

[0011] The aforementioned vibrating variable-distance harvesting device has a chain plate rubber pad on the side of the chain plate that contacts the trunk or branches, a clamping plate rubber pad on the side of the clamping plate that contacts the trunk or branches, and an arc-shaped plate rubber pad on the side of the main support plate that contacts the trunk or branches.

[0012] The aforementioned vibrating variable-pitch harvesting device has an arc-shaped plate fixed on the main support plate that contacts the tree trunk or branches, and the arc-shaped plate is located between the chain and the base.

[0013] The aforementioned vibrating variable-distance harvesting device has a structure in which the main support plate is connected to the chain or base as follows: multiple slots are opened on the main support plate, and locking pins are fixed on both sides of the chain or base; the locking pins can be placed into different slots to change the connection position between the chain or base and the main support plate, so as to adapt to the large range of changes in the diameter of the tree trunk or numerical value being clamped, and to ensure the envelope angle when the chain clamps small-diameter tree trunks or branches.

[0014] In the aforementioned rocking-type variable-pitch harvesting device, the power unit and transmission mechanism are connected to the main support plate through a shock-absorbing device, and the transmission mechanism is connected to the excitation mechanism through a belt drive device.

[0015] The aforementioned vibrating variable pitch harvesting device has a reducer transmission ratio of 1:5, an internal gear ring with 76 teeth, a sun gear shaft with 19 teeth, and a module of 0.9; the belt drive has a transmission ratio of 1:1 or 1:1.6.

[0016] In the aforementioned vibrating variable pitch harvesting device, the positioning plate is fixed to the side of the gasoline engine housing, the end of the reducer housing near the gasoline engine is fixed to the positioning plate, and the side support plate is simultaneously fixed to the other end of the reducer housing away from the gasoline engine housing and the positioning plate.

[0017] In the aforementioned vibrating variable pitch harvesting device, the drive shaft in the excitation mechanism is rotatably supported on the main support plate. A main rubber pad is installed between the bottom of the gasoline engine housing and the main support plate. The front and rear support plates of the foot pads are fixed to the side of the gasoline engine housing, the positioning plate, or the side support plate. Large cylindrical rubber pads are installed between the front and rear support plates of the foot pads and the main support plate. Small cylindrical rubber pads are installed between the gasoline engine handle fixed on the gasoline engine housing and the main support plate.

[0018] The aforementioned vibrating variable-pitch harvesting device has a clamping bolt rotatably connected to the base and a clamping plate threadedly connected to it. When the clamping bolt is rotated, the clamping plate and the base move towards each other or away from each other, and the clamping bolt together with the base can swing back and forth relative to the main support plate.

[0019] The beneficial effects of this patent are:

[0020] Wide frequency range. When the reduction ratio of the reducer is 1:5, the excitation frequency range is 10-40 (Hz) when using a pulley with a 1:1 transmission ratio, and 6.3-25 (Hz) when using a pulley with a 1:1.6 ratio.

[0021] Quick clamping. The base and clamping bolt 17 are rotatably connected. The clamping bolt 17 is threadedly connected to the clamping plate 8. The final locking operation is performed by twisting the clamping bolt 17 and the clamping plate 8. The entire clamping device is locked by twisting the clamping bolt 17 through the twisting rod 9. The C-shaped hook on the lower side of the clamping plate 8 can hook the pin 5 that is tightly fitted with the chain plate 6. This allows for quick adjustment of the diameter of the annular part formed by the clamping head by increasing or decreasing the number of chain plates 6 to accommodate a wide range of changes in the diameter of the tree trunk or branches. The large number of chain plates 6 and pins 5 allows for rapid changes in diameter.

[0022] Flexible clamping. The contact points between the clamping device and the tree trunk or branches, such as the chain plate rubber pad 19 on the chain plate, the clamp plate rubber pad 18 on the clamping plate, and the arc-shaped plate rubber pad 30 on the main support plate, are in close contact with the tree. This can increase the contact area with the tree, reduce damage to the tree bark, and also increase the friction force, making it less likely for the clamping device to fall off the tree.

[0023] The clamping device is suitable for a wide range of tree trunk thicknesses. The clamping device is used to clamp tree trunks or branches. The base 16 is engaged in the left-side slot of the clamping part (arc plate) of the main support plate 4. The base 16 can switch clamping positions in different slots on the left side of the main support plate 4. The chain can switch between different slots on the right side of the main support plate 4 to change the chain's suspension position. In addition, the C-shaped hook on the lower side of the clamping plate 8 can hook different pins 5 in the chain, changing the effective length of the chain actually involved in clamping the tree trunk or branch, thus adapting to tree trunks or branches with diameters ranging from 5cm to 30cm.

[0024] Lightweight, portable, and with minimal vibration. Utilizing the STIHL MS 382 gasoline engine, which boasts high speed, high power, and light weight, along with a planetary gear reducer and belt drive with a specific transmission ratio of 1:3 to 1:7, the entire machine weighs no more than 22 kg. The compact and convenient design provides continuous and stable power output, making it ideal for complex terrain environments. A flexible connection is established between the gasoline engine (including the reducer) and the main support plate using large and small cylindrical rubber pads. This prevents the vibration force from the excitation mechanism from being transmitted to the gasoline engine, thus avoiding damage and the possibility of operator hand fatigue during prolonged operation. The belt drive mitigates the impact on the excitation mechanism during initial engine startup and prevents the excitation force from being transmitted to the reducer and gasoline engine. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the rocking variable-pitch harvesting device.

[0026] Figure 2 This is another overall structural diagram of the rocking variable pitch harvesting device;

[0027] Figure 3 This is an overall structural diagram of the vibrating variable pitch harvesting device (chain and C-hook separated).

[0028] Figure 4 Another overall structural diagram of the vibrating variable pitch harvesting device (chain and C-hook separated);

[0029] Figure 5 Another overall structural diagram of the vibrating variable pitch harvesting device (chain and C-hook separated).

[0030] Figure 6Another overall structural diagram of the vibrating variable pitch harvesting device (chain and C-hook separated);

[0031] Figure 7 This is a structural diagram of a vibrating variable-pitch harvesting device (with clamping plates and some chain plates removed).

[0032] Figure 8 Another structural diagram of the vibrating variable pitch harvesting device (with the clamping plate and part of the chain plate removed);

[0033] Figure 9 Another structural diagram of the rocking variable pitch harvesting device (with the clamping plate and some chain plates removed);

[0034] Figure 10 This is an exploded view of the speed reducer;

[0035] Figure 11 This is a schematic diagram of a speed reducer.

[0036] In the diagram, 1 is the gasoline engine, 2 is the gasoline engine handle, 3 is the excitation mechanism housing, 4 is the main support plate, 5 is the pin, 6 is the chain plate, 7 is the large pulley, 8 is the clamping plate, 9 is the screw rod, 10 is the narrow V-belt, 11 is the small pulley, and 12 is the side support plate.

[0037] Reducer 13, flange 130, input shaft end cover 131, reducer housing 132, coupling 133, sun gear shaft 134, reducer output shaft 135, planet gears 136, internal gear ring 137, planet gear shaft 138, through slot 139.

[0038] Positioning plate 14, main board rubber pad 15, base 16, clamping bolt 17, clamping plate rubber pad 18, chain plate rubber pad 19, small cylindrical rubber pad 20, large cylindrical rubber pad 21, front support plate for foot 22, rear support plate for foot 23.

[0039] Arc-shaped rubber pad 30, drive shaft 31, end cover 32, eccentric block 33, slot 35, pin 36; C-shaped hook 37, arc-shaped plate 41. Detailed Implementation

[0040] The specific embodiments of this patent will be further described below with reference to the accompanying drawings.

[0041] This patent discloses a rocking variable pitch harvesting device, including a clamping device, a transmission mechanism, an excitation mechanism, a shock absorption device, and a gasoline engine.

[0042] The vibration excitation mechanism includes a drive shaft 31, left and right end covers 32, an eccentric block 33, and a main support plate 4. The drive shaft 31 in the vibration excitation mechanism is rotatably supported on the left and right end covers 32, which are fixed to the outer shell 3 of the vibration excitation mechanism. The outer shell 3 of the vibration excitation mechanism is fixed to the main support plate 4. The eccentric block 32 is mounted on the drive shaft 31.

[0043] The clamping device includes a chain (chain plate 6 and pin 5), a clamping plate 8, a clamping bolt 17, a base 16, and a screw rod 9, etc.

[0044] The transmission mechanism includes a reducer 13, a small pulley 11, a narrow V-belt 10, and a large pulley 7, etc.

[0045] The shock absorption device includes a small cylindrical rubber pad 20, a large cylindrical rubber pad 21, a front support plate 22 for the foot pad, a rear support plate 23 for the foot pad, and a main rubber pad 15, etc.

[0046] The chain consists of multiple chain plates 6 hinged together by pins 5, with the two ends of the pins extending out of the chain plates.

[0047] An arc-shaped plate 41 that contacts the tree trunk or branches is fixed on the main support plate 4. Multiple slots 35 are opened on the main support plate 4 on both sides of the arc-shaped plate. Locking pins 36 are fixed on both sides of the chain plate 6 at the end of the chain and the base 16. The locking pins 36 can be inserted into different slots to change the connection position between the chain and the base and the main support plate 4.

[0048] The screw rod 9 passes perpendicularly through the clamping bolt 17, the clamping bolt 17 is rotatably connected to the base 16, and the clamping bolt 17 is threadedly connected to the clamping plate 8.

[0049] Two C-shaped hooks 37 with notches around the perimeter are provided at one end of the clamping plate 8. When both ends of any pin 5 are inserted into the two hooks, the chain is connected to the clamping plate 8; when the pin 5 is removed from the C-shaped hooks 37, the chain is separated from the clamping plate 8.

[0050] When the clamping bolt 17 is rotated by the screw rod 9, the base 16 and the clamping plate 8 move towards or away from the clamping bolt 17, thereby adjusting the circumference of the ring formed by the connected base, clamping bolt, clamping plate, chain, and arc plate to clamp or loosen the trunk or branches.

[0051] A chain plate rubber pad 19 is provided on the side of the chain plate 6 that contacts the tree trunk or branches, a clamping plate rubber pad 18 is provided on the side of the clamping plate 8 that contacts the tree trunk or branches, and an arc plate rubber pad 30 is provided on the side of the arc plate 41 that contacts the tree trunk or branches.

[0052] The gasoline engine 1 is a STIHL MS 382 gasoline engine. The positioning plate 14 is fixed to the side of the gasoline engine housing, the flange 131 in the reducer 13 is fixed to the positioning plate, and the side support plate 12 is fixed to both the end of the reducer housing 132 away from the gasoline engine housing and the positioning plate 14.

[0053] A main rubber pad 15 is provided between the bottom of the gasoline engine housing and the main support plate 4. The front support plate 22 and the rear support plate 23 are fixed on the side support plate 12. Large cylindrical rubber pads 21 are provided between the front support plate 22 and the rear support plate 23 and the main support plate 4. Small cylindrical rubber pads 20 are provided between the gasoline engine handle 2 fixed on the gasoline engine housing and the main support plate 4.

[0054] The reducer 13 is a planetary gear reducer, including a flange 130 (which can also be considered a component of the reducer housing) fixed on the positioning plate 14, an input shaft end cover 131 (which can also be considered a component of the reducer housing), a reducer housing 132, a coupling 133, a sun gear shaft 134, a reducer output shaft 135, planetary gears 136, an internal gear ring 137, and a planetary gear shaft 138, etc. The flange 130, input shaft end cover 131, and reducer housing 132 are fixedly connected. The sun gear shaft 134 passes through the input shaft end cover 131 and the flange 130 and is connected to the gasoline engine output shaft via the coupling 133. The sun gear shaft 134 is coaxial with the reducer output shaft 135. One end of the reducer output shaft 135 is a ring sleeve, and the other end extends out of the reducer housing and is connected to the small pulley 11 (driving pulley) in the belt drive device via a key. The ring-shaped sleeve surrounds the sun gear shaft. Three planetary gears 136 are located in three through slots 139 circumferentially within the ring-shaped sleeve. The planetary gears 136 are rotatably mounted on the side walls of the through slots 139 via planetary gear shafts 138. The outer circumference of the planetary gears 136 meshes externally with the sun gear shaft 134, and the inner circumference meshes internally with an internal gear ring 137 fixed on the reducer housing. The internal gear ring 137 has 76 teeth, the sun gear shaft 134 has 19 teeth, and the module is 0.9. The large pulley 7 (driven pulley) in the belt drive is connected to the drive shaft in the vibration mechanism. The reducer has a transmission ratio of 1:5, and the belt drive has a transmission ratio of 1:1 or 1:1.6.

[0055] The clamping device is used to clamp tree trunks or branches. The base 16 is engaged in the left-side slot of the clamping part of the main support plate 4. The base 16 can switch clamping positions in the left-side slot of the clamping part of the main support plate 4. The right-side slot of the clamping part of the main support plate 4 can change the suspension position of the chain plate 6, thus accommodating tree trunks or branches with diameters ranging from 5cm to 30cm. The base 16 and the clamping bolt 17 are connected by rotation, and the clamping bolt 17 is connected to the clamping plate 8 by thread. The final locking operation of clamping is performed by turning the clamping bolt 17 and the clamping plate 8. The clamping bolt 17 is turned by turning the turning rod 9. 7. This locks the entire clamping device in place. The C-shaped hook on the underside of the clamping plate 8 can hook onto the pin 5 that is tightly fitted with the chain plate 6. This allows for quick adjustment of the diameter by increasing or decreasing the number of chain plates 6 to accommodate tree trunks or branches of different diameters. The large number of chain plates 6 and pins 5 allows for rapid changes in diameter. The clamping part is in contact with the tree through the chain plate rubber pad 19, the clamping plate rubber pad 18, and the arc-shaped plate rubber pad 30, which increases the contact area with the tree, reduces damage to the tree bark, and increases friction, making it less likely for the clamping device to fall off the tree.

[0056] The transmission mechanism is used to transmit the power of the gasoline engine 1 to the vibration mechanism for vibration harvesting. The gasoline engine 1 is a STIHL MS 382 gasoline engine with a speed range of 3000-12000 (r / min). It can idle below 3000 rpm, and above 3000 rpm, it transmits power to the reducer 13. The reducer 13 has a transmission ratio of 1:5 and is fixedly positioned by the positioning plate 14 and two studs on the lower right side of the gasoline engine 1. The side support plate 12 is connected to the positioning plate 14, thereby ensuring more precise coaxiality between the reducer 13 and the output shaft of the gasoline engine 1. The power of the reducer 13 is transmitted to the small pulley 11 through a key connection. The small pulley 11 is connected to two narrow... V-belt 10 transmits power to the large pulley 7 of the excitation mechanism. Belt drive can mitigate the impact during initial startup. The small pulley 11 or large pulley 7 in the belt drive device can be replaced with a 1:1 transmission ratio pulley or a 1:1.6 transmission ratio pulley. When using a 1:1 transmission ratio pulley, the excitation frequency range is 10-40 (Hz). When using a 1:1.6 pulley, the excitation frequency range is 6.3-25 (Hz). The entire machine weighs 21.25KG. The mechanism is lightweight, convenient, and provides a sustainable and stable output power, making it very suitable for environments with complex terrain.

[0057] The excitation mechanism can change the excitation force by adjusting the mass of the eccentric block.

[0058] The shock absorption device is used to connect the gasoline engine 1 and the main support plate 4. The excitation mechanism generates a very large excitation force during operation. If the gasoline engine 1 and the main support plate 4 are rigidly connected, it may cause damage to the gasoline engine 1 and injury to the operator's hands from prolonged vibration, or even render the machine unusable. A flexible connection between the gasoline engine 1 and the main support plate 4 can effectively avoid these situations. The flexible connection in this patent uses four large cylindrical rubber pads 21, which are respectively connected to the front support plate 22 and the rear support plate 23 of the foot pad, which are connected to the side support plate 12, and fixed to the main support plate 4. Two small cylindrical rubber pads 20 are connected to the gasoline engine handle 2 and the main support plate 4 respectively. Finally, a main rubber pad 15 is connected to the main support plate 4, thus forming a flexible connection between the gasoline engine 1 and the main support plate 4.

[0059] Before vibratory harvesting, a suitable pin 5 is selected based on the trunk diameter. The pin 5 is roughly clamped using the C-hooks on the underside of the clamping plate 8 of the clamping device. Then, the tightening rod 9 is rotated to tighten the clamping bolt 17, thus quickly locking the vibratory harvesting device firmly to the trunk. The gasoline engine 1 generates power, which is transmitted to the reducer 13 for speed reduction and torque increase. The output shaft of the reducer 13 is connected to a pulley mechanism via a key. This pulley mechanism further adjusts the speed transmitted to the excitation mechanism, thereby adjusting the excitation frequency and protecting the drive shaft. The drive shaft is fixed at both ends with left and right end caps and bearings. An eccentric block is fixed to the drive shaft with a key. The excitation force can be increased or decreased by adjusting the mass of the eccentric block.

[0060] The harvesting device is powered by a gasoline engine 1. The engine speed is adjusted according to the throttle position of the gasoline engine 1. The speed is reduced and the torque is increased by a reducer 13, and then the power is transmitted to the vibration mechanism via belt drive. The eccentric block of the vibration mechanism is adjustable, which in turn adjusts the vibration force and vibration frequency. This harvesting device can obtain ideal vibration frequency and vibration force, has strong environmental adaptability, can provide continuous energy input, has low labor intensity, and high harvesting efficiency. It is suitable for use in mountainous areas, has high harvesting efficiency, good stability, is easy to carry, and has good stability.

Claims

1. A vibrating variable-pitch harvesting device, wherein a power unit drives an eccentric block in an excitation mechanism to rotate via a transmission mechanism, generating an excitation force; a main support plate is fixedly connected to the excitation mechanism; and a clamping device for clamping tree trunks or branches is connected to the main support plate, characterized in that: The power unit is the MS382 gasoline engine from STIHL, and the transmission mechanism includes a reducer with a transmission ratio of 1:3 to 1:7 and a belt drive. The reducer is a planetary gear reducer. The reducer housing is fixed to the gasoline engine housing. The sun gear shaft is connected to the gasoline engine output shaft. One end of the reducer output shaft is a ring sleeve, and the other end of the reducer output shaft extends out of the reducer housing and is connected to the driving pulley in the belt drive. The ring sleeve surrounds the sun gear shaft. The planet gears are rotated through the ring sleeve on the reducer output shaft via the planet gear shaft. The planet gears simultaneously mesh externally with the sun gear shaft and internally with the internal gear ring fixed to the reducer housing. The driven pulley in the belt drive is connected to the drive shaft in the vibration mechanism, and an eccentric block is set on the drive shaft. The clamping device includes a base, clamping bolts, clamping plates, and a chain. The chain consists of multiple chain plates hinged by pins. The two ends of the main support plate are respectively connected to one end of the chain and the base. The base is rotatably mounted on the main support plate. The pins are detachably connected to the clamping plates. The clamping plates are threadedly connected to the clamping bolts. The clamping bolts are rotatably mounted on the base around their axes. When the clamping bolts are rotated, the axial position of the clamping plates on the clamping bolts can be changed, thereby adjusting the circumference of the annular part formed by the connected base, clamping bolts, clamping plates, chain, and main support plate to clamp or loosen the trunk or branches. The structure connecting the main support plate to the chain or base is as follows: multiple slots are opened on the main support plate, and locking pins are fixed on both sides of the chain or base; the locking pins can be inserted into different slots to change the connection position between the chain or base and the main support plate; a chain plate rubber pad is set on the side of the chain plate that contacts the trunk or branches, and a clamping plate rubber pad is set on the side of the clamping plate that contacts the trunk or branches.

2. The shaking-type variable-distance harvesting device as described in claim 1, characterized in that: The two ends of the pin extend into chain plates, and two hooks are provided on the clamps. When the two ends of either pin are inserted into the two hooks, the chain is connected to the clamps; when the pin is removed from the hooks, the chain is separated from the clamps.

3. The shaking-type variable-distance harvesting device as described in claim 2, characterized in that: The hook is a C-shaped hook with a notch around its perimeter, through which the pin can be inserted into or removed from the C-shaped hook.

4. The shaking-type variable-distance harvesting device as described in claim 1, characterized in that: An arc-shaped plate is fixed on the main support plate for contact with the trunk or branches, and the arc-shaped plate is located between the chain and the base.

5. The vibrating variable-pitch harvesting device as described in claim 1, characterized in that: a speed reducer The transmission ratio is 1:5, the number of teeth on the internal gear ring is 76, the number of teeth on the sun gear shaft is 19, and the module is 0.9; the transmission ratio of the belt drive is 1:1 or 1:1.

6.

6. The shaking-type variable-distance harvesting device as described in claim 5, characterized in that: The positioning plate is fixed to the side of the gasoline engine housing, the end of the reducer housing closest to the gasoline engine is fixed to the positioning plate, and the side support plate is fixed to the other end of the reducer housing away from the gasoline engine housing and the positioning plate.

7. The shaking-type variable-distance harvesting device as described in claim 6, characterized in that: The drive shaft in the excitation mechanism is rotated and supported on the main support plate. A main rubber pad is set between the bottom of the gasoline engine housing and the main support plate. The front support plate and the rear support plate are fixed to the side of the gasoline engine housing, the positioning plate, or the side support plate. Large cylindrical rubber pads are set between the front support plate and the rear support plate and the main support plate. Small cylindrical rubber pads are set between the gasoline engine handle fixed on the gasoline engine housing and the main support plate.

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