A variable frequency and amplitude vibrating harvesting device for camellia fruit

Abstract

A variable frequency and amplitude vibratory harvesting device for camellia oleifera fruits includes an outermost shell, an excitation section that generates vibration at the tail of the shell, an amplitude-changing section in the middle of the shell, and a clamping section at the front of the shell. This invention generates vibration through the excitation section, allowing adjustment of the vibration frequency. The amplitude-changing section adjusts the vibration amplitude. The clamping section connects and fixes the device to the camellia oleifera branches, transmitting the vibration to the branches. The device can be adjusted to suitable vibration frequency and amplitude for different branch conditions to improve the fruit drop rate during harvesting, while reducing damage to branches and the fall of camellia oleifera flowers, thus avoiding impact on next year's yield and ensuring the long-term sustainability of mechanical vibration harvesting.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and more specifically relates to a variable frequency and amplitude vibratory harvesting device for camellia fruit. Background Technology

[0002] Camellia oleifera is mostly planted in hilly areas, and its harvesting period is short, with "flowering and fruiting occurring simultaneously" during this period. Currently, most camellia oleifera plantations still rely on manual harvesting, significantly increasing labor costs. In recent years, vibration harvesting has been applied to the camellia oleifera industry. This method greatly improves harvesting efficiency while effectively reducing labor costs. However, fixed vibration frequencies and amplitudes can have adverse effects on different types of camellia oleifera branches. When the vibration frequency or amplitude is high, the harvesting effect is better, but there is a greater risk of camellia flowers falling off, affecting next year's yield and causing some damage to the trees. When the vibration frequency or amplitude is low, the risk of flower falling and tree damage is lower, but the harvesting effect will be affected. To improve the harvesting rate of camellia oleifera fruit and reduce the damage rate of flower buds during vibration harvesting, the vibration frequency and amplitude of the vibration harvesting device need to be adjustable according to the parameters of the branches being held. Summary of the Invention

[0003] The purpose of this invention is to solve the above problems by designing a variable frequency and amplitude vibrating harvesting device for camellia fruit.

[0004] The technical solution of the present invention to achieve the above objectives is a variable frequency and amplitude vibrating harvesting device for camellia fruit, comprising a shell part that serves to fix the outer layer, an excitation part that generates vibration, an amplitude adjustment part that adjusts the amplitude, and a clamping part that connects to the branches.

[0005] The housing portion includes an outer shell, six reset slide grooves symmetrically fixedly connected to the inner walls of the left and right sides of the rear part of the outer shell, six push slide grooves symmetrically fixedly connected to the inner walls of the middle part of the outer shell, a horizontal plate fixedly connected between the front and middle parts of the outer shell with an opening in the middle, a lifting slide groove fixedly connected to the horizontal plate, a motor bracket fixedly connected to the outer wall of the rear part of the outer shell, and a front horizontal plate fixedly connected to the front part of the outer shell with an opening in the middle.

[0006] The excitation section includes a motor fixedly connected to the motor bracket, a small cam fixedly connected to the motor output shaft, a medium cam fixedly connected to the small cam, a large cam fixedly connected to the medium cam, three cam pulleys that are in line contact with the large, medium, and small cams respectively, three cross-shaped push rods that are rotatably connected to the three cam pulleys respectively, and six return springs that are respectively installed inside the six return grooves; the two sides of the three cross-shaped push rods are slidably connected to the six return grooves corresponding to the left and right sides of the inner wall of the outer casing respectively; one end of each of the six return springs is hooked to both ends of the three cross-shaped push rods, and the other end is fixedly connected to the rear frame of the return groove respectively;

[0007] The flapping section includes a lifting bracket slidably connected to the lifting slide groove, a lifting motor fixedly connected to one side of the lifting bracket, a flapping gear fixedly connected to the output shaft of the lifting motor, a flapping rack fixedly connected to the middle of the housing and meshing with the flapping gear, four limiting pulleys symmetrically rotated and connected to the other side of the lifting bracket, a T-shaped flapping rod installed between the four limiting pulleys and in line contact with the upper and lower limiting pulleys, spring end caps in contact with the two ends of the T-shaped flapping rod, and a push spring fixedly connected to the spring end cap at one end and to the push slide groove at the other end; the front end of the T-shaped flapping rod protrudes from the opening in the middle of the horizontal plate;

[0008] The clamping part includes a clamping housing fixedly connected to the front end of the T-shaped boom changer, a clamping motor bracket fixedly connected to the upper and lower inner walls of the tail of the clamping housing, a clamping motor fixedly connected to the clamping motor bracket, a cylindrical gear fixedly connected to the output shaft of the clamping motor, two clamping racks that mesh with the cylindrical gears in the upper and lower parts respectively, two clamping pulleys that are rotatably connected to the base of the clamping racks, and clamping rods fixedly connected to the outer side of the clamping racks respectively.

[0009] The large cam has the longest push stroke, the medium cam has the second longest push stroke, and the small cam has the shortest push stroke. The large, medium, and small cams have the same base circle radius and the minimum radius of the hub line is located on the same vertical line. The three cross push rods are at the same height as the large, medium, and small cams, respectively. The reset slides on both sides are at the same height as the three cross push rods, and the push slides on both sides are at the same height as the three cross push rods.

[0010] One end of the reset spring is connected to the reset slide groove to generate tension. The three cam pulleys are always in contact with the large cam, medium cam and small cam line. When the push spring is not under force, the spring end cap plane is in contact with the T-shaped amplitude changing rod. The two clamping rods are symmetrical about the axis of the clamping cylindrical gear.

[0011] After adopting the above solution, the beneficial effects of the present invention are as follows:

[0012] Different camellia tree branches vary in diameter, length, number of fruits, and number of flower buds. The appropriate vibration frequency and amplitude can be selected based on the actual situation. For example, when the branches are thinner and the number of fruits is less, the vibration frequency and amplitude can be reduced. When the branches are thicker and the number of fruits is greater, the vibration frequency and amplitude can be increased. This can not only improve the harvesting efficiency of camellia trees, but also reduce the number of flower buds falling and the damage to the camellia trees, thus avoiding affecting the yield of the following year. Attached Figure Description

[0013] Figure 1 This is a front view of a half-section of the outer casing of the present invention.

[0014] Figure 2 This is a detailed schematic diagram of the reset spring and push spring of the present invention.

[0015] Figure 3 This is a detailed schematic diagram of the frame switching part of the present invention.

[0016] Figure 4 This is a detailed schematic diagram of the clamping part of the present invention.

[0017] Figure 5 This is a detailed schematic diagram of the clamping motor of the present invention.

[0018] Figure 6 This is a schematic diagram of the overall invention.

[0019] Component names and numbers in the diagram: 1.1-Outer shell; 1.2-Reset slide rail; 1.3-Push slide rail; 1.4-Lifting slide rail; 1.5-Horizontal plate; 1.6-Motor bracket; 1.7-Front horizontal plate; 2.1-Motor; 2.2-Small cam; 2.3-Medium cam; 2.4-Large cam; 2.5-Cam pulley; 2.6-Cross top rod; 2.7-Reset spring; 3.1-Lifting bracket; 3.2-Lifting motor; 3.3-Bow shifting gear; 3.4-Bow shifting rack; 3.5-Limit pulley; 3.6-T-shaped bow shifting rod; 3.7-Spring end cap; 3.8-Push spring; 4.1-Clamping outer shell; 4.2-Clamping motor bracket; 4.3-Clamping motor; 4.4-Spiral gear; 4.5-Clamping rack; 4.6-Clamping pulley; 4.7-Clamping rod. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] After placing the camellia branch between the two clamping rods 4.7, the clamping motor 4.3 operates, and the cylindrical gear 4.4, which is fixedly connected to the output shaft of the clamping motor 4.3, rotates clockwise. The upper and lower clamping racks 4.5, which mesh with the cylindrical gear 4.4, move towards the center until the clamping rod 4.7 clamps the branch. The clamping motor 4.3 stops operating, and then the motor 2.1 operates. At this time, the minimum radius of the hub line of the large cam 2.4, medium cam 2.3, and small cam 2.2 contacts the three cam pulleys 2.5, causing them to rotate. The three cam pulleys 2.5 rotate along the hub line of the large cam 2.4, medium cam 2.3, and small cam 2.2. Simultaneously, due to the increased push stroke, the three cross push rods 2.6 slide forward along the reset groove 1.2. The T-shaped amplitude-changing rod 3.6 is located in the middle push groove 1.3 and maintains contact with the middle cross-shaped push rod 2.6. The T-shaped amplitude-changing rod 3.6 slides between the upper and lower limit pulleys 3.5 under the pushing force of the cross-shaped push rod 2.6. The clamping part moves forward as a whole, and the clamped branch moves forward. When the push stroke of the large cam 2.4, medium cam 2.3, and small cam 2.2 decreases, the cross-shaped push rod 2.6 moves backward due to the tension of the return spring 2.7. The cam pulley 2.5 remains in contact with the large cam 2.4, medium cam 2.3, and small cam 2.2. The T-shaped amplitude-changing rod 3.6 also moves backward under the pushing force of the push spring 3.8. The clamping part moves backward as a whole, and the clamped branch moves backward. This is the medium amplitude operation. The vibration frequency can be adjusted by adjusting the speed of the motor 2.1. When adjusting the amplitude, motor 2.1 first stops working, so that the large cam 2.4, medium cam 2.3, and small cam 2.2 are at the minimum radius of the hub line and in contact with the three cam pulleys 2.5. Then, the lifting motor 3.2 starts working, and the amplitude-changing gear 3.3, which is fixedly connected to the output shaft of the lifting motor 3.2, rotates counterclockwise (clockwise) while driving the lifting motor 3.2 to move up (down) along the amplitude-changing rack 3.4. The lifting motor 3.2 drives the lifting bracket 3.1 along the lifting slide 1. 4. When the T-shaped amplitude-changing rod 3.6, which is in line contact with the upper and lower limit pulleys 3.5, moves upward (downward) under the force of the lifting bracket 3.1, it moves upward (downward) simultaneously. When the T-shaped amplitude-changing rod 3.6 is moved to the upper (lower) push groove 1.3, the lifting motor 3.2 stops working and remains at this height. Then the motor 2.1 works. At this time, the operation is performed with a small (large) amplitude. The vibration operation principle and vibration frequency adjustment method at the small (large) amplitude position are the same as those for medium amplitude operation.

Claims

1. A variable frequency and amplitude vibratory harvesting device for camellia oleifera fruits, characterized in that: This includes the outer shell section that provides fixation, the excitation section that generates vibration, the amplitude switching section that adjusts the amplitude, and the clamping section that connects the tree branches; The housing portion includes an outer shell (1.1), six reset slide grooves (1.2) symmetrically fixedly connected to the inner walls of the left and right sides of the rear part of the outer shell (1.1), six push slide grooves (1.3) symmetrically fixedly connected to the inner walls of the middle part of the outer shell (1.1) on the left and right sides, a horizontal plate (1.5) fixedly connected between the front and middle parts of the outer shell (1.1) with an opening in the middle, a lifting slide groove (1.4) fixedly connected to the horizontal plate (1.5), a motor bracket (1.6) fixedly connected to the upper outer wall of the rear part of the outer shell, and a front horizontal plate (1.7) fixedly connected to the front part of the outer shell (1.1) with an opening in the middle. The excitation section includes a motor (2.1) fixedly connected to the motor bracket (1.6), a small cam (2.2) fixedly connected to the output shaft of the motor (2.1), a medium cam (2.3) fixedly connected to the small cam (2.2), a large cam (2.4) fixedly connected to the medium cam (2.3), three cam pulleys (2.5) respectively in line contact with the large cam (2.4), the medium cam (2.3), and the small cam (2.2), and three cam pulleys (2.5) respectively. The three cross-shaped push rods (2.6) are rotatably connected, and six return springs (2.7) are respectively installed inside the six return slides (1.2); the two sides of the three cross-shaped push rods (2.6) are slidably connected to the six return slides (1.2) corresponding to the left and right sides of the inner wall of the outer shell (1.1); one end of the six return springs (2.7) is respectively hooked to the two ends of the three cross-shaped push rods (2.6), and the other end is respectively fixedly connected to the rear frame of the return slide (1.2); The flapping section includes a lifting bracket (3.1) slidably connected to the lifting slide (1.4), a lifting motor (3.2) fixedly connected to one side of the lifting bracket (3.1), a flapping gear (3.3) fixedly connected to the output shaft of the lifting motor (3.2), a flapping rack (3.4) fixedly connected to the middle of the housing (1.1) and meshing with the flapping gear (3.3), and four limiting pulleys (3.5) symmetrically rotatably connected to the other side of the lifting bracket (3.1). A T-shaped flapping rod (3.6) is installed between four limiting pulleys (3.5) and in line contact with the upper and lower limiting pulleys (3.5); a spring end cap (3.7) is in contact with the sides of both ends of the T-shaped flapping rod (3.6); and a push spring (3.8) is fixedly connected at one end to the spring end cap (3.7) and at the other end to the push slide groove (1.3); the front end of the T-shaped flapping rod (3.6) passes through the opening in the middle of the horizontal plate (1.5) and the front horizontal plate (1.7); The clamping part includes a clamping housing (4.1) fixedly connected to the front end of the T-shaped flap changer (3.6), a clamping motor bracket (4.2) fixedly connected to the upper and lower inner walls of the tail of the clamping housing (4.1), a clamping motor (4.3) fixedly connected to the clamping motor bracket (4.2), a cylindrical gear (4.4) fixedly connected to the output shaft of the clamping motor (4.3), two clamping racks (4.5) meshing with the cylindrical gear (4.4) respectively, two clamping pulleys (4.6) rotatably connected to the base of the clamping rack (4.5), and clamping rods (4.7) fixedly connected to the outer side of the clamping rack (4.5).

2. The variable frequency and amplitude vibratory harvesting device for camellia fruit according to claim 1, characterized in that: The large cam (2.4) has the longest push stroke, the medium cam (2.3) has the second longest push stroke, and the small cam (2.2) has the shortest push stroke. The large cam (2.4), medium cam (2.3), and small cam (2.2) have the same base circle radius, and the minimum radius of the wheel hub line is located on the same vertical line. The three cross push rods (2.6) are at the same height as the large cam (2.4), medium cam (2.3), and small cam (2.2), respectively. The reset slides (1.2) on both sides are at the same height as the three cross push rods (2.6), respectively. The push slides (1.3) on both sides are at the same height as the three cross push rods (2.6).

3. The variable frequency and amplitude vibratory harvesting device for camellia fruit according to claim 1, characterized in that: One end of the return spring (2.7) is connected to the return slide (1.2) to generate tension. The three cam pulleys (2.5) are always in line contact with the large cam (2.4), the medium cam (2.3), and the small cam (2.2). When the push spring (3.8) is not under force, the plane of the spring end cap (3.7) is in contact with the T-shaped amplitude changing rod (3.6). The two clamping rods (4.7) are symmetrical about the axis of the clamping cylindrical gear (4.4).

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