Handheld Chinese prickly ash picking machine

Abstract

The invention discloses a handheld Chinese prickly ash picking machine, relates to the technical field of Chinese prickly ash harvesting, and aims to solve the problems of long idle running time and low picking efficiency of a picking cutter of an existing picking machine. Comprising a box shell, a handle, a cutter, a motor and a crank and rocker mechanism, a battery is arranged on the handle, the box shell is located at the front end of the handle, fruit combing teeth are arranged at the front end of the box shell, the cutter is located above the fruit combing teeth, the motor is fixed to the box shell, and the crank and rocker mechanism comprises a crank, a rocker and a connecting rod. The first end of the crank is fixedly connected with an output shaft of the motor, the second end of the crank is hinged to the middle section of the connecting rod, the first end of the rocker is rotationally connected with the box shell, the second end of the rocker is hinged to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected with the cutter. By means of the pulling-cutting-pushing-quick-return movement mode, the no-load movement time of the cutter is shortened, the no-load operation time is short, the cutter can be quickly reset, and then the picking efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of Chinese prickly ash harvesting, and specifically to a handheld Chinese prickly ash picker. Background Art

[0002] Traditional Chinese prickly ash harvesting mainly relies on manual picking. Since Chinese prickly ash trees have many thorns and are easy to prick, manual picking has problems such as high labor intensity, low efficiency, and harm to physical health. The manual picking method is not suitable for large-area and large-scale picking operations. With the development of agricultural mechanization and informatization, various Chinese prickly ash picking machines have emerged. Picking robots are mostly restricted by terrain, and problems such as branches and leaves blocking affect their applicability and picking effect. Most handheld and backpack-type picking devices adopt a rotary hob cutting method, with a short load cutting stage and a long no-load rotation time, resulting in waste of resources and being unfavorable for improving cutting efficiency. For example, a handheld Chinese prickly ash fruit picker disclosed in Chinese Patent No. 2020103177916 includes a shield, a scraper assembly, a handle, a power control assembly, a through shaft, and a fruit collection bag. The scraper assembly is arranged inside the shield, the through shaft passes through the shield and the scraper assembly in sequence, the fruit collection bag is arranged directly below the scraper assembly, and the power control assembly controls the rotation of the scraper assembly through the through shaft to scrape off the Chinese prickly ash and send it into the fruit collection bag for collection. Another example is a portable handheld Chinese prickly ash picking device disclosed in Chinese Patent No. 202420005794X, which includes a device main body. One end of the device main body is connected to a grip, one upper part of the grip is connected to a control panel, one end of the grip is connected to a detachable battery, one end of the device main body is connected to a motor, one end of the motor is connected to a connecting shaft, one end of the connecting shaft is connected to a fork-shaped blade, one end of the device main body is connected to a tool holder, the upper end of the tool holder is connected to a blade, one end of the tool holder is connected to a fixing nut, the bottom end of the device main body is connected to a threaded connection seat, the bottom end of the threaded connection seat is connected to a threaded connection ring, and the bottom end of the threaded connection ring is connected to a collection bag. The present utility model picks Chinese prickly ash by driving the fork-shaped blade through a motor and collects the picked Chinese prickly ash through the collection bag. The above-mentioned prior arts all adopt a rotary cutting method to pick Chinese prickly ash. The high-speed rotating picking tool has a short contact time with the Chinese prickly ash branch and a long no-load rotation time, resulting in low effective utilization rate of electric energy and serious waste of resources. Summary of the Invention

[0003] The purpose of the present invention is to provide a handheld Chinese prickly ash picker to solve the problems of long no-load rotation time of the picking tool and low picking efficiency existing in the existing picker that adopts a rotary cutting structural method to pick Chinese prickly ash.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: A handheld Chinese prickly ash picker, comprising a box shell, a handle, fruit comb teeth, a cutter, a motor and a crank-rocker mechanism. The front end and the bottom of the box shell are open. The box shell is located at the front end of the handle. The front end of the box shell is provided with fruit comb teeth. The cutter is located above the fruit comb teeth. The motor is fixed on the box shell. The crank-rocker mechanism includes a crank, a rocker and a connecting rod. The first end of the crank is fixedly connected to the output shaft of the motor. The second end of the crank is hingedly connected to the middle section of the connecting rod. The first end of the rocker is rotatably connected to the box shell. The second end of the rocker is hingedly connected to the first end of the connecting rod. The second end of the connecting rod is fixedly connected to the cutter. A battery for supplying power to the motor and a switch for controlling the on-off of the electrical connection between the battery and the motor are provided on the handle. When the crank rotates, the trajectory of the cutter driven by the connecting rod is divided into four stages: In the first stage, the cutter moves backward and downward to pull the Chinese prickly ash onto the fruit comb teeth. In the second stage, the cutter continues to move backward and downward to cut off the Chinese prickly ash branch. In the third stage, the cutter moves backward and upward to push the Chinese prickly ash into the box shell. In the fourth stage, the cutter moves forward until it returns to the origin point.

[0005] Further, the handle is fixedly connected to the box shell.

[0006] Further, two ear plates are provided at the front end of the handle, and a boss is provided at the rear end of the box shell. The boss extends between the two ear plates and a damping member is provided between them. The setting of the damping member enables the handle and the box shell to remain relatively fixed.

[0007] Further, the fruit comb teeth are in a comb-tooth-shaped structure. The tooth frame of the fruit comb teeth is inserted and connected to the front end of the box shell and the tooth frame is fixedly connected to the box shell by screws.

[0008] Further, a support plate is provided at the top of the box shell. Both the crank and the rocker are rotatably connected to the support plate.

[0009] Further, the battery is located at the rear end of the handle, and the battery is inserted and connected or snap-connected to the handle.

[0010] Further, a speed regulator is provided on the handle. The speed regulator is used to adjust the rotational speed of the output shaft of the motor.

[0011] Further, a tool holder is provided on the cutter and the two are fixedly connected by screws. The tool holder is fixedly connected to the second end of the connecting rod.

[0012] Further, two crank-rocker mechanisms are arranged left and right. The crank of the first crank-rocker mechanism is the driving member, and the crank of the second crank-rocker mechanism is the driven member. The first end of the tool holder is fixedly connected to the second end of the connecting rod of the first crank-rocker mechanism, and the second end of the tool holder is fixedly connected to the second end of the connecting rod of the second crank-rocker mechanism.

[0013] Further, the motor is located at the top of the box housing, and the crank-rocker mechanism is located on the left or right side of the box housing.

[0014] The beneficial effects of the present invention are as follows: The present invention drives the cutter to move through the crank-rocker mechanism. The movement process of the cutter is divided into four stages. In the first stage, the cutter pulls the pepper branch above the fruit combing teeth. In the second stage, the speed of the cutter decreases to cut the pepper branch and protects the pepper fruits in a decelerated form. In the third stage, the cutter pushes the pepper into the box housing for collection. According to the quick-return motion characteristic of the crank-rocker mechanism, in the fourth stage, the cutter is unloaded and the movement speed increases to return to the origin as soon as possible. Through the movement mode of pulling-cutting-pushing-quick return, the movement time of the cutter in the unloaded state is reduced, and the unloaded running time is short. The cutter can be quickly reset, thereby improving the picking efficiency. Description of the Drawings

[0015] Figure 1 is the three-dimensional view of the first embodiment of the present invention; Figure 2 is the left view of the first embodiment of the present invention; Figure 3 is the running track diagram of the cutter of the present invention; Figure 4 is the top view of the second embodiment of the present invention; Figure 5 is the front view of the second embodiment of the present invention; In the figure: 1 box housing, 11 boss, 2 motor, 3 crank, 4 connecting rod, 5 rocker, 6 tool holder, 61 cutter, 7 fruit combing teeth, 71 tooth rack, 8 handle, 81 ear plate, 9 battery, 10 switch, 11 speed regulator, 12 support plate, 13 slot, A first stage, B second stage, C third stage, D fourth stage. Detailed Embodiments

[0016] As Figures 1 to 5 shown, the present invention includes a box housing 1, a motor 2, a crank 3, a connecting rod 4, a rocker 5, a cutter 61, fruit combing teeth 7, a handle 8, a battery 9, a switch 10, and a speed regulator 11. The structure, working principle, and usage method of the present invention will be described in detail below with reference to the drawings.

[0017] Embodiment 1: As Figures 1 to 2As shown, a handheld pepper picking machine includes a box shell 1, a handle 8, a comb tooth 7, a cutter 61, a motor 2 and a crank rocker mechanism. The box shell 1 is a rectangular parallelepiped structure, and the corners are rounded as needed. The front end and the bottom of the box shell 1 are open, and the box shell 1 is located at the front end of the handle 8. There are two ways of assembling the box shell 1 and the handle 8, one is a fixed connection, and the other is an adjustable movable connection. The box shell 1 and the handle 8 can be fixedly connected by screw / bolt connection and snap connection. At this time, the relative angle between the box shell 1 and the handle 8 cannot be adjusted. When the handle 8 and the box shell 1 are movably connected, there are two ear plates 81 at the front end of the handle 8, and a boss 11 is provided at the rear end of the box shell 1. The boss 11 extends between the two ear plates 81, and a damping member is provided between the boss 11 and the two ear plates 81. The setting of the damping member makes the ear plate 81 and the boss 11 have a large friction force, and it is necessary to manually bend the box shell 1 to make the relative movement of the handle 8 to adjust the angle. After the bending action between the box shell 1 and the handle 8 is cancelled, the handle 8 and the box shell 1 can remain relatively fixed.

[0018] like Figures 1 to 2 As shown, the front end of the box shell 1 has a comb tooth 7, which is used to comb and disperse the pepper branches. The comb tooth 7 is in a comb tooth structure. The tooth frame 71 of the comb tooth 7 is plugged and connected to the front end of the box shell 1, and the tooth frame 71 is fixedly connected to the box shell 1 by screws. In order to facilitate plug-in installation, a slot 13 is provided at the lower part of the front end of the box shell 1. After the tooth frame 71 is inserted into the slot 13, the tooth frame 71 is flush with the front wall of the box shell 1. Screws are screwed in from the bottom of the box shell 1 to achieve a fixed connection between the box shell 1 and the tooth frame 71. The detachable connection between the comb tooth 7 and the box shell 1 facilitates the replacement of the comb tooth 7.

[0019] like Figures 1 to 2As shown, the cutter 61 is located above the fruit comb teeth 7. The motor 2 is fixed on the housing 1. The crank-rocker mechanism includes a crank 3, a rocker 5 and a connecting rod 4. The first end of the crank 3 is fixedly connected to the output shaft of the motor 2. The second end of the crank 3 is hingedly connected to the middle section of the connecting rod 4. The first end of the rocker 5 is rotatably connected to the housing 1. The second end of the rocker 5 is hingedly connected to the first end of the connecting rod 4. The second end of the connecting rod 4 is fixedly connected to the cutter 61. After the motor 2 is started, it directly drives the rotation of the crank 3. The rotation of the crank 3 drives the reciprocating swing of the rocker 5 through the connecting rod 4. During this process, the cutter 61 moves along a closed curve with the second end of the connecting rod 4. For the convenience of assembly, a support plate 12 extends upward from the top of the housing 1. Both the crank 3 and the rocker 5 are rotatably connected to the support plate 12. The support plate 12 is a part of the housing 1. For the convenience of the fixed connection between the cutter 61 and the connecting rod 4, the cutter 61 is provided with a tool holder 6. And for the convenience of the fixed connection between the cutter 61 and the connecting rod 4, the cutter 61 is provided with a tool holder 6, and the cutter 61 and the tool holder 6 are fixedly connected by screws. The tool holder 6 is fixedly connected to the second end of the connecting rod 4. The detachable assembly method of the cutter 61 and the tool holder 6 facilitates the replacement of the cutter 61 with serious wear.

[0020] As Figure 1 shown, the handle 8 is provided with a battery 9 for supplying power to the motor 2, and a switch 10 for controlling the on-off of the electrical connection between the battery 9 and the motor 2. The battery 9 is located at the rear end of the handle 8. A groove for installing the battery 9 is provided at the rear end of the handle 8. The battery 9 is connected to the handle 8 by plugging or snap connection. After the battery 9 is inserted into the groove, the battery 9 contacts the conductive sheet in the groove. When the switch 10 is pressed, the motor 2 can be conducted with the battery 9. At this time, the battery 9 supplies power to the motor 2, and the motor 2 outputs a rotational motion. When the switch is pressed again, the electrical connection between the motor 2 and the battery 9 can be cut off. At this time, the motor 2 is in a shutdown state. To realize the adjustment of the rotation speed of the crank 3, that is, to adjust the output power of the motor 2, a speed regulator 11 is provided on the handle 8. The speed regulator 11 is used to adjust the rotation speed of the output shaft of the motor 2.

[0021] To avoid the prickly ash and facilitate the prickly ash to enter the housing 1 from the front of the housing 1, the motor 2 is arranged on the top of the housing 1, and the crank-rocker mechanism is arranged on the left or right side of the housing 1. In this way, there is only the cutter 61 in front of the housing 1. After the cutter 61 is lifted high, it is convenient for the prickly ash to enter. When the cutter 61 moves backward, it can pull the prickly ash in the direction of the inner cavity of the housing 1.

[0022] As Figure 3As shown in the figure, when the crank 3 rotates, the trajectory of the connecting rod 4 driving the cutter 61 to move is divided into four stages: A, B, C, and D. In stage A, that is, the first stage, the cutter 61 moves backward and downward to pull the Chinese prickly ash to the fruit comb teeth 7; in stage B, that is, the second stage, the cutter 61 continues to move backward and downward to cut the Chinese prickly ash branch; in stage C, that is, the third stage, the cutter 61 moves backward and upward to push the Chinese prickly ash into the box shell 1. Since there is an open mouth at the bottom of the box shell 1, the Chinese prickly ash falls after passing through the bottom of the box shell 1. A collection bag can be set below the box shell 1, so that the falling Chinese prickly ash falls into the collection bag for collection; in stage D, that is, the fourth stage, the cutter 61 moves forward until it returns to the origin.

[0023] Embodiment 2: As the second embodiment of the present invention, as Figure 4 、 Figure 5 shown, the difference between Embodiment 2 and Embodiment 1 is that there are two crank rocker mechanisms arranged left and right. The crank 3 of the first crank rocker mechanism is the driving member, and the crank 3 of the second crank rocker mechanism is the driven member. That is, when the motor 2 drives the connected crank 3 to rotate, the connecting rod 4 of the first crank rocker mechanism moves, driving the cutter 61 to move. The movement of the cutter 61 drives the connecting rod 4 of the second crank rocker mechanism connected thereto to move, and then the crank 3 and the rocker 5 of the second crank rocker mechanism move accordingly. The first end of the tool holder 71 is fixedly connected to the second end of the connecting rod 4 of the first crank rocker mechanism, and the second end of the tool holder 71 is fixedly connected to the second end of the connecting rod 4 of the second crank rocker mechanism. In Embodiment 2, crank rocker mechanisms are arranged at both ends of the cutter 61, which can ensure the stability of the movement of the cutter 61. At this time, the first crank rocker mechanism is used to drive the movement of the cutter 61, and the second crank rocker mechanism is used to cooperate with the first crank rocker mechanism to maintain the stability of the cutter 61.

[0024] The working principle of the present invention is described below: (1) Press the switch 10 to start the entire picking machine. At this time, the motor 2 starts, driving the movement of the cutter 61 through the crank rocker mechanism; (2) When rotating the speed regulator 11, the output speed of the motor 2 can be adjusted, and then the movement speed of the cutter 61 can be adjusted; (3) When the cutter 61 moves, the movement trajectory is divided into four stages. The four stages respectively perform the actions of pulling the Chinese prickly ash to the fruit comb teeth 7, cutting the Chinese prickly ash branch, pushing the Chinese prickly ash into the box shell 1, and returning to the origin; the quick return characteristic of the crank rocker mechanism itself enables the cutter 61 to quickly return to the origin after performing the actions of pulling the Chinese prickly ash, cutting the Chinese prickly ash branch, and pushing the Chinese prickly ash, so as to perform the picking action again. During the entire movement process of the cutter 61, the movement time of the cutter 61 in the first three stages is longer, and the cutter 61 is in a loaded state. In the fourth stage of the movement of the cutter 61, the cutter 61 is in an unloaded state. The unloaded running time of the cutter 61 is short, thereby reducing the reactive power loss of the cutter. And the cutter 61 can be quickly reset, thereby improving the picking efficiency.

[0025] The following is a description of the method of using the invention: First, the battery 9 and the handle 8 are assembled; second, the handle 8 is held and the switch 10 is pressed to start the picking machine; finally, the picking machine is extended to the fruit on the prickly ash tree for picking. When picking, the prickly ash branches can enter between the comb teeth 7 or be directly located above the comb teeth 7.

[0026] The present invention drives the cutter 61 to move through a crank rocker mechanism, and the movement process of the cutter 61 is divided into four stages. In the first stage, the cutter 61 pulls the pepper branch to the top of the comb teeth 7. In the second stage, the speed of the cutter 61 is reduced to achieve cutting of the pepper branch and protect the pepper fruit in the form of reduced speed. In the third stage, the cutter 61 pushes the pepper into the box shell 1 for collection. According to the quick return motion characteristics of the crank rocker mechanism, in the fourth stage, the cutter 61 is unloaded and the movement speed is accelerated so as to return to the origin as soon as possible. Through the pull-cut-push-quick return motion mode, the unloaded movement time of the cutter is reduced, and the unloaded operation time is short. The cutter 61 can be quickly reset, thereby improving the efficiency of picking.

Claims

1. A handheld pepper picking machine, comprising a housing, a handle, a cutter and a motor, wherein the handle has a battery for powering the motor and a switch for controlling the electrical connection between the battery and the motor, characterized in that: The invention also includes fruit combing teeth and a crank rocker mechanism, wherein the front end and the bottom of the box shell are open, the box shell is located at the front end of the handle, the front end of the box shell has fruit combing teeth, the cutter is located above the fruit combing teeth, the motor is fixed to the box shell, the crank rocker mechanism includes a crank, a rocker and a connecting rod, the first end of the crank is fixedly connected to the motor output shaft, the second end of the crank is hinged to the middle section of the connecting rod, the first end of the rocker is rotatably connected to the box shell, the second end of the rocker is hinged to the first end of the connecting rod, and the second end of the connecting rod is fixedly connected to the cutter; when the crank rotates, the trajectory of the cutter driven by the connecting rod is divided into four stages: in the first stage, the cutter moves backward and downward to pull the pepper onto the fruit combing teeth; in the second stage, the cutter continues to move backward and downward to cut off the pepper branches; in the third stage, the cutter moves backward and upward to push the pepper into the box shell; in the fourth stage, the cutter moves forward until it returns to the origin.

2. A handheld pepper picking machine according to claim 1, characterized in that: The handle is fixedly connected to the box shell.

3. A handheld pepper picking machine according to claim 1, characterized in that: The front end of the handle is provided with two ear plates, the rear end of the box shell is provided with a boss, the boss extends between the two ear plates and a damping member is provided between the two ear plates; the damping member is arranged so that the handle and the box shell remain relatively fixed.

4. The handheld pepper picking machine according to claim 1, characterized in that: The comb teeth are in a comb-tooth structure, and the tooth frame of the comb teeth is plug-connected with the front end of the box shell, and the tooth frame and the box shell are fixedly connected by screws.

5. The handheld pepper picking machine according to claim 1, characterized in that: The top of the box shell is provided with a support plate, and the crank and the rocker are both rotatably connected to the support plate.

6. The handheld pepper picking machine according to claim 1, characterized in that: The battery is located at the rear end of the handle, and the battery is plug-connected or snap-connected to the handle.

7. The handheld pepper picking machine according to claim 1, characterized in that: The handle is provided with a speed regulator, and the speed regulator is used to adjust the rotation speed of the motor output shaft.

8. The handheld pepper picking machine according to claim 1, characterized in that: The cutter is provided with a cutter holder and the two are fixedly connected by screws, and the cutter holder is fixedly connected to the second end of the connecting rod.

9. The handheld pepper picking machine according to claim 1, characterized in that: There are two crank-rocker mechanisms arranged on the left and right, the crank of the first crank-rocker mechanism is the active part, and the crank of the second crank-rocker mechanism is the driven part; the first end of the tool holder is fixedly connected to the second end of the connecting rod of the first crank-rocker mechanism, and the second end of the tool holder is fixedly connected to the second end of the connecting rod of the second crank-rocker mechanism.

10. The handheld pepper picking machine according to claim 1, characterized in that: The motor is located at the top of the housing, and the crank rocker mechanism is located at the left side or the right side of the housing.

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