CN108450131B

CN108450131B - Handheld pineapple picking device

Info

Publication number: CN108450131B
Application number: CN201810400833.5A
Authority: CN
Inventors: 艾子健; 胡州; 曾师尊
Original assignee: Sanming University
Current assignee: Sanming University
Priority date: 2018-04-28
Filing date: 2018-04-28
Publication date: 2023-06-23
Anticipated expiration: 2038-04-28
Also published as: CN108450131A

Abstract

The invention provides a hand-held pineapple picking device, which comprises: the device comprises a box body, a handle, a central shaft, a unidirectional transmission mechanism, a guiding protection mechanism and a cutter mechanism. The box body is provided with a limit groove, and the stalks can move from the notch of the limit groove to the bottom of the limit groove; the handle is connected to the box body; the central shaft is arranged on the box body through a one-way transmission mechanism; the guide protection mechanism is arranged on the central shaft and provided with a plurality of blades, and the blades can be driven by pineapple to drive the central shaft to rotate anticlockwise or clockwise relative to the box body in the process that the stalks move to the bottom of the limit groove; the cutter mechanism is configured on the central shaft and provided with a plurality of blades; the blade moves to the position capable of limiting the movement of the stem from the notch of the limiting groove after the stem moves to the groove bottom of the limiting groove, and the blade can cut the stem when the box body is far away from the stem, so that the pineapple is separated from the stem, and the pineapple is cut off smoothly. Compared with the prior art, the picking device is convenient to use and cannot damage pineapple.

Description

Handheld pineapple picking device

Technical Field

The invention relates to a fruit picking device, in particular to a handheld pineapple picking device.

Background

At present, as pineapple is perennial fruit and has a special structure, the pineapple cannot be mechanically picked in a large area at one time and can be picked in batches in a targeted manner; and the normal growth of pineapple plants must be maintained while picking so as not to affect the fruiting condition of the pineapple plants in the next year. At present, the domestic pineapple picking mainly uses manual picking, and as the pineapple leaves are provided with sharp teeth, the peel is hard and has bulges and barbs, the manual picking is easy to hurt people, the pineapple picking efficiency is seriously affected, and the pineapple picking is also a headache for the pickers. To solve such a problem, consideration must be given from various aspects, and then structural design must be performed to meet practical requirements. Most pineapple harvesters on the market are large machines, and the power mechanism of the pineapple harvesters is driven by a huge tractor. There are also a small number of small machines that are selectively picked by hand and hand.

In the prior art, a series of problems exist in the pineapple picking process, such as large-scale mechanized picking, which is inevitably limited by factors such as geographical environment, fruit field position, fruit field scale and the like, and the economic cost of the picking is too high. The common manipulator structure generally separates the pineapple from the stem by clamping the pineapple and twisting the pineapple relative to the stem, and the mode can clamp the pulp, so that the value of the fruit is reduced. Meanwhile, the handle of the common manipulator structure is usually of a straight rod structure, which does not accord with the ergonomic design, so that a user needs to repeatedly bend down when adopting pineapple, and the problem of high labor intensity exists.

In view of this, the inventors have studied the prior art and have made the present application.

Disclosure of Invention

The invention aims to solve the technical problem of providing a pineapple picking device to solve the problem that pulp is scratched when the existing picking mechanism picks pineapple.

In order to solve the above technical problems, the present invention provides a handheld pineapple picking device, comprising: the device comprises a box body, a handle, a central shaft, a unidirectional transmission mechanism, a guiding protection mechanism and a cutter mechanism. The box body is provided with a limiting groove, and the stalks can move from the notch of the limiting groove to the bottom of the limiting groove when the box body is relatively close to the limiting groove; the handle is connected to the box body; the central shaft is arranged on the box body through a one-way transmission mechanism, the central shaft can rotate anticlockwise or clockwise relative to the box body, and the one-way transmission mechanism can correspondingly limit the central shaft to rotate clockwise or anticlockwise; the guide protection mechanism is arranged at the upper end of the central shaft and is provided with a plurality of blades which are arranged at intervals along the circumferential direction, and the blades can drive the rotating shaft support to rotate anticlockwise or rotate clockwise relative to the box body by being pushed by pineapple in the process that the stalks move to the bottom of the limit groove; the cutter mechanism is arranged on the central shaft and can rotate along with the central shaft, and the cutter mechanism is provided with a plurality of blades which are arranged at intervals along the circumferential direction; the blade moves to the position that can restrict the stem from shifting out from the notch of spacing groove after the stem moves to the tank bottom of spacing groove, and the blade that moves to the position that can restrict the stem from shifting out from the notch of spacing groove can cut the stem when the box is kept away from relative stem to make pineapple and stem separate mutually, cut the pineapple smoothly.

As a further improvement, the case includes a main body portion and a case cover disposed on the main body portion; the cover is provided with a reverse groove matched with the limit groove, and the reverse groove is used for preventing pineapple from falling to the ground from the outer edge of the cover after being separated from the stalk.

As a further improvement, the blades of the guide protection mechanism are arc-shaped, the inner walls of the blades can be tangent to the outer edges of the pineapples when the stems move to the bottoms of the limiting grooves, and after the pineapples are separated from the stems, the inner walls of the blades can protect the pineapples to smoothly fall into the inverted grooves formed in the box cover.

As a further improvement, the cutter mechanism of the picking device comprises a cutter frame supporting the blade; the tool holder is mounted on the central shaft.

As a further improvement, the case includes a main body portion and a case cover disposed on the main body portion; the unidirectional transmission mechanism comprises a first unidirectional bearing and a second unidirectional bearing, wherein the bearing outer ring of the first unidirectional bearing is fixed on the box cover, and the bearing outer ring of the second unidirectional bearing is fixed on the box body.

As a further improvement, the case includes a main body portion and a case cover disposed on the main body portion; the unidirectional transmission mechanism of the picking device is a ratchet mechanism, and the ratchet mechanism comprises a ratchet, a pawl, a positioning rod and a torsion spring; the ratchet wheel is fixed on the central shaft and is positioned below the tool rest, one end of the pawl is inserted into a tooth slot of the ratchet wheel, and the other end of the pawl is rotatably arranged on the main body part through a positioning rod; the torsion spring is arranged between the main body part and the pawl; when the ratchet wheel pushes the pawl to rotate, the pawl drives the torsion spring to deform, and when the torsion spring is reset from the deformed state, the pawl is driven to be inserted into a tooth slot of the ratchet wheel.

As a further improvement, the handle is an aluminum alloy handle.

As a further improvement, the handle is curved.

By adopting the technical scheme, the invention can obtain the following technical effects:

1. when the pineapple is picked by adopting the structure, a user holds the handle to move forwards, so that the stalks under the pineapple enter the limiting groove and move along the notch to the groove bottom, in the process, the guide protection structure and the cutter mechanism rotate along the central shaft in the same direction, and when the stalks reach the groove bottom of the limiting groove, a reverse drawing force is applied to the handle, and under the action of the unidirectional transmission mechanism, the cutter structure acts to smoothly separate the pineapple from the stalks; in the process, the pineapple is not clamped by the picking device, so that the pineapple is not damaged;

2. under the condition of arranging the inverted groove, the inverted groove can prevent the pineapple from being separated from the stalk and directly falling to the ground to cause damage to the ground to a great extent;

3. under the condition of adopting the arc-shaped blades, the inner walls of the blades can protect the pineapple from falling into the inverted groove arranged on the box cover after the pineapple is separated from the stem thereof, thereby being beneficial to avoiding damage;

4. the aluminum alloy handle is adopted, so that the whole product is lighter in weight, easy to take and convenient to carry;

5. by adopting the curved handle, the pineapple picking machine can accord with human engineering, avoid bending over in the pineapple picking process, greatly reduce labor intensity and improve labor efficiency.

Drawings

FIG. 1 is a schematic view of the structure of the present invention at a first viewing angle;

FIG. 2 is a schematic view of the structure of the present invention at a second viewing angle;

FIG. 3 is a schematic diagram of the operation of the present invention;

FIG. 4 is an exploded view of the present invention in a first embodiment;

FIG. 5 is a schematic view of a unidirectional transmission structure according to a first embodiment of the present invention;

FIG. 6 is a schematic view of a main body of the present invention in a first embodiment;

fig. 7 is an exploded view of the present invention in a second embodiment.

Drawing reference numerals

1. A case; s, a limit groove; 1A, a main body part; 1B, a box cover; 1C, chamfering; 1D, positioning holes;

2. a central shaft; 3. a guide protection mechanism; 3A, a blade; 4. a cutter mechanism; 4A, a blade; 4B, a knife rest; 5. a unidirectional transmission mechanism; 6. a ratchet 7 and a pawl; 8. a positioning rod; 9. a torsion spring; 10. a bearing;

11. a first one-way bearing; 12. a second one-way bearing; 13. a handle; l1, pineapple; l2, stalks.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

The invention provides a handheld pineapple picking device which is mainly used for picking pineapple growing on the ground, and is combined with fig. 1 to 6, and in a first embodiment, the pineapple picking device comprises a box body 1, a central shaft 2, a one-way transmission mechanism 5, a guide protection mechanism 3, a cutter mechanism 4 and a handle 13.

Referring to fig. 1 to 6, the case 1 includes a limiting slot S, a main body 1A, a case cover 1B, a reverse slot 1C, and a positioning hole 1D. The cover 1B and the main body 1A may be fixed together by welding or screws, and the inverted groove 1C is disposed above the cover 1B and cooperates with the limiting groove S to prevent the pineapple from being damaged by falling to the ground from the outer edge of the cover when the pineapple is separated from the stalk below the cover. The main body 1A, the cover 1B, and the reverse groove 1C may be formed of an aluminum alloy material. The limiting groove S may be a U-shaped groove in the illustration, but may also be other V-shaped grooves or grooves with other shapes.

The central shaft 2 passes through the case cover 1B and is supported on the case 1 by a unidirectional transmission mechanism 5, in this embodiment, the central shaft 2 can rotate counterclockwise relative to the case 1, and the unidirectional transmission mechanism 5 can limit the central shaft 2 to rotate clockwise relative to the case 1. The central shaft 2 can be coupled with the case cover 1B through the bearing 10.

The guide guard mechanism 3 includes 3 blades 3A arranged at intervals in the circumferential direction, and the 3 blades 3A are connected to a set of connectors provided and fixed to the center shaft 2. The guide protection mechanism 3 can synchronously rotate along with the central shaft 2. The blade 3A has an arc shape. The 3 blades 3A of the present embodiment are arranged at equal intervals in the circumferential direction, with an interval angle of 120 ° between each two blades. The number of blades 3A is not limited to the number of the present application, and the interval angle between each two blades 3A may be adjusted in the range of 0 ° to 180 °, for example, 30 ° to 180 °.

The cutter mechanism 4 comprises 3 blades 4A and cutter holders 4B which are arranged at intervals along the circumferential direction, the blades 4A can be fixed on the cutter holders 4B in an interference fit mode or a bolt fastening mode, and the cutter holders 4B are fixed on the central shaft 2 in an interference fit mode and are positioned below the guide protection mechanism 3. The 3 blades 4A and the 3 blades 3A of the guiding protection mechanism are arranged in a staggered way, and a certain angle is formed between the two blades when the blades are projected onto the same plane, and the specific angle can be determined according to the overall size of the picking device. The cutter mechanism 4 can synchronously rotate along with the central shaft 2. The 3 blades 4A of the present embodiment are arranged at equal intervals in the circumferential direction, with an interval angle of 120 ° between each two blades. The number of blades 4A is not limited to the number of the present application, and the angle of the interval between each two blades may be adjusted in the range of 0 ° to 180 °, for example, 30 ° to 180 °.

The armrest 13 is mounted on the main body 1A, the armrest 13 may be curved, and the armrest 13 may be an aluminum alloy handle.

In the first embodiment, the unidirectional transmission mechanism is a ratchet mechanism, the ratchet mechanism comprises a ratchet 6 and a pawl 7, the ratchet 6 is arranged below the tool rest 4B of the central shaft 2 through interference fit, the pawl 7 is arranged on the box 1B, one end of the pawl 7 is inserted into a tooth slot of the ratchet, the other end of the pawl 7 is rotatably arranged on the main body part 1A of the box 1 through a positioning rod 8, and the positioning rod 8 is fixed in a positioning hole 1D on the box 1; the torsion spring 9 is disposed between the main body portion 1A and the pawl 7; when the ratchet wheel 6 pushes the pawl 7 to rotate, the pawl 7 drives the torsion spring 9 to deform, when the pawl 7 rotates around the center of the torsion spring 9, the pawl 7 is pulled back to the initial position to generate torque or rotating force, and when the torsion spring 9 is reset from the deformed state, the pawl 7 is driven to be inserted into the tooth slot of the ratchet wheel 6 again. When the guide protection mechanism 3 drives the central shaft 2 to rotate anticlockwise, the ratchet 6 also rotates.

Referring to fig. 1 to 3, the handheld pineapple picking apparatus of the first embodiment works as follows: when the user pushes the handle 13 to enable the box body 1 to be close to the stalk L2, and when the pineapple stalk L2 enters along the opening of the limiting groove S, as the pineapple L1 is in a shape with two small ends and a large middle, one blade 3A of the guiding protection mechanism 3 touches the pineapple L1, at the moment, the user continues to push the box body 1 forward, so that when the stalk L2 moves to the bottom of the limiting groove S, the pineapple L1 generates a reaction force on the guiding protection mechanism 3, and the guiding protection mechanism 3 drives the central shaft 2 to rotate together, and the cutter structure 4 also rotates along with the rotation. When the maximum excircle of the pineapple L2 reaches the bottom of the limit groove S or is separated from the excircle of the blade 3A, the blade 4A of the cutter mechanism 4 rotates to the excircle of the pineapple stalk, and the pineapple stalk L2 is positioned in a closed area surrounded by the blade 4A and the limit groove S. When the handle 13 is pulled to apply a reverse pulling force, the pawl 7 prevents the ratchet 6 from rotating reversely, and the central shaft 2 cannot rotate clockwise. At this time, the blade 4A applies a cutting force to the pineapple stalk to separate the pineapple L1 from the pineapple stalk L2, and the inner wall of the blade 3A can protect the pineapple L1 from falling smoothly into the inverted groove 1C provided in the case cover 1B. Finally, the pineapple in the groove is poured into a collecting frame (not shown). The picking device can also be applied to picking of plants with other fruits above stems.

That is, the above is the first embodiment of the present application, but it is to be understood that the unidirectional transmission mechanism is not limited to the above-described embodiment, and in connection with fig. 7, in the second embodiment, the unidirectional transmission mechanism may include the first unidirectional bearing 11 and the second unidirectional bearing 12. The bearing outer ring of the first one-way bearing 11 is fixed on the case cover 1B by interference fit, and the bearing outer ring of the second one-way bearing 12 is fixed on the main body part 1A of the case 1 by interference fit, so as to realize the installation of the central shaft 2. The central shaft can also rotate anticlockwise and can not rotate clockwise through the mode. Other features not mentioned in this embodiment may be the same as in the previous embodiment.

Unlike the above embodiments, the central shaft may rotate counterclockwise but not clockwise, in other embodiments, the position of the limiting slot may be adjusted, and the configuration of the unidirectional transmission mechanism may be adjusted at the same time, so that the central shaft may rotate clockwise but not counterclockwise.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-held pineapple picking device, which is used for separating pineapple of pineapple plants from stems below the pineapple plants; the pineapple picking device is characterized by comprising:

the box body (1) is provided with a limiting groove (S), and the stalks can move from the notch of the limiting groove (S) to the bottom of the limiting groove (S) when the box body (1) is close to the limiting groove;

a handle (13) connected to the case (1);

the central shaft (2) is arranged on the box body (1) through a one-way transmission mechanism (5), the central shaft (2) can rotate anticlockwise or clockwise relative to the box body (1), and the one-way transmission mechanism (5) can correspondingly limit the central shaft (2) to rotate clockwise or anticlockwise;

the guide protection mechanism (3) is arranged at the upper end of the central shaft (2), the guide protection mechanism (3) is provided with a plurality of blades (3A) which are arranged at intervals along the circumferential direction, and the blades (3A) can drive the central shaft to rotate anticlockwise or rotate clockwise relative to the box body (1) by being pushed by pineapple in the process that the stalks move to the bottom of the limit groove (S);

a cutter mechanism (4) which is arranged on the central shaft (2) and can rotate along with the central shaft, wherein the cutter mechanism (4) is provided with a plurality of blades (4A) which are arranged at intervals along the circumferential direction; the blade (4A) moves to a position capable of limiting the movement of the stem from the notch of the limiting groove (S) after the stem moves to the groove bottom of the limiting groove (S), and the blade (4A) moves to a position capable of limiting the movement of the stem from the notch of the limiting groove can cut the stem when the box body is far away from the stem, so that the pineapple is separated from the stem.

2. Picking device according to claim 1, wherein the box (1) comprises a main body (lA) and a cover (1B) arranged on the main body (1A); the box cover (1B) is provided with a reverse groove (1C) matched with the limit groove (S), and the reverse groove (1C) is used for preventing pineapple and stalk from falling to the ground from the outer edge of the box cover (1B) after being separated.

3. The picking device of claim 2 wherein: the blade (3A) of the guiding protection mechanism (3) is arc-shaped, the inner wall of the blade (3A) can be tangent to the outer edge of the pineapple when the stem moves to the bottom of the limiting groove (S), and after the pineapple is separated from the stem, the inner wall of the blade can protect the pineapple to smoothly fall into the inverted groove arranged on the box cover (1B).

4. The picking device of claim 1 wherein: the cutter mechanism (4) of the picking device comprises a cutter rest (4B) for supporting the cutter blade (4A); the tool rest (4B) is mounted on the central shaft (2).

5. The picking device of claim 1 wherein: the case (1) comprises a main body (lA) and a case cover (1B) arranged on the main body (1A); the unidirectional transmission mechanism comprises a first unidirectional bearing (11) and a second unidirectional bearing (12), wherein the bearing outer ring of the first unidirectional bearing (11) is fixed on the box cover (1B), and the bearing outer ring of the second unidirectional bearing (12) is fixed on the box body (1).

6. The picking device of claim 4 wherein: the case (1) comprises a main body (lA) and a case cover (1B) arranged on the main body (1A); the unidirectional transmission mechanism (5) of the picking device is a ratchet mechanism, and the ratchet mechanism comprises a ratchet (6), a pawl (7), a positioning rod (8) and a torsion spring (9); the ratchet wheel (6) is fixed on the central shaft (2) and is positioned below the tool rest (4B), one end of the pawl (7) is inserted into a tooth slot of the ratchet wheel (6), and the other end of the pawl (7) is rotatably arranged on the main body part (1A) through a positioning rod (8); the torsion spring (9) is arranged between the main body part (1A) and the pawl (7); when the ratchet wheel (6) pushes the pawl (7) to rotate, the pawl (7) drives the torsion spring (9) to deform, and when the torsion spring is reset from the deformed state, the pawl (7) is driven to be inserted into a tooth slot of the ratchet wheel (6).

7. The picking device of any one of claims 1 to 6, wherein: the handle (13) is an aluminum alloy handle.

8. The picking device of any one of claims 1 to 6, wherein: the handle (13) is curved.