CN108307802B

CN108307802B - Fruit picking shears with telescopic function

Info

Publication number: CN108307802B
Application number: CN201810317085.4A
Authority: CN
Inventors: 萧志钰; 贾建波; 周鹏; 贾俊杰; 王博; 邓宏业; 宋健; 党海英; 黄维娜; 蒋欣宸; 徐元亮
Original assignee: Jingzhou Institute of Technology
Current assignee: Jingzhou Institute of Technology
Priority date: 2018-04-10
Filing date: 2018-04-10
Publication date: 2020-06-30
Anticipated expiration: 2038-04-10
Also published as: CN108307802A

Abstract

The invention relates to a fruit picking scissors with a telescopic function, and belongs to the technical field of fruit picking equipment. The fruit picking shears with the telescopic function comprise a tractor, a clamping handle, an outer sleeve, an inner sleeve, a driving gear and a shearing head; one end of the outer sleeve is provided with a clamping handle through a pin; the other end of the outer sleeve is provided with a driving gear through a driving motor; an inner sleeve is arranged in the outer sleeve in a sliding way; the inner sleeve is meshed with the driving gear; one end of the inner sleeve extends to the outer end of the outer sleeve; the end of the inner sleeve extending to the outer end of the outer sleeve is provided with a shearing head; a tractor is arranged in the outer sleeve at the other end of the inner sleeve; the clamping handle is connected with the shearing head through a tractor. The fruit picking shears with the telescopic function have simple structure and convenient use; the problem of big and the work efficiency low of intensity of labour that exists when people use ordinary scissors to accomplish fruit and pick at present is solved, people's user demand has been satisfied.

Description

Fruit picking shears with telescopic function

Technical Field

The invention relates to a fruit picking scissors with a telescopic function, and belongs to the technical field of fruit picking equipment.

Background

Fruits with handles, such as bergamot pears, apples, grapefruits, oranges and the like, are popular daily fruits; when the fruits are on the market, fruit growers need to quickly pick the fruits without damage in the picking period; can meet the requirement of fruit on the market. At present, the fruit picking is mainly completed by using common scissors, and when the fruit picking is completed by using the common scissors, the problems of high labor intensity and low working efficiency exist; the picking work of the fruits at the high position can be finished by means of a ladder, and the requirement of large-area and quick fruit picking by fruit growers cannot be met; therefore, it is necessary to develop a fruit picking scissors with a telescopic function to solve the above problems existing when the fruit picking work is completed by a common scissors.

Disclosure of Invention

The invention aims to: the utility model has simple structure and convenient use; fruit picking scissors with a telescopic function solve the problems of high labor intensity and low working efficiency existing when common scissors are used for picking fruits.

The technical scheme of the invention is as follows:

a fruit picking scissors with a telescopic function comprises a tractor, a clamping handle, an outer sleeve, an inner sleeve, a driving gear and a shearing head; the method is characterized in that: one end of the outer sleeve is provided with a clamping handle through a pin; the other end of the outer sleeve is provided with a driving gear through a driving motor; an inner sleeve is arranged in the outer sleeve in a sliding way; the inner sleeve is meshed with the driving gear; one end of the inner sleeve extends to the outer end of the outer sleeve; the end of the inner sleeve extending to the outer end of the outer sleeve is provided with a shearing head; a tractor is arranged in the outer sleeve at the other end of the inner sleeve; the clamping handle is connected with the shearing head through a tractor.

The inner sleeve consists of a sleeve body and a transmission rack; a transmission rack is fixedly arranged on the sleeve body; the transmission rack is meshed with the driving gear; the outer sleeves at the two sides of the transmission rack are provided with guide slide rails; the transmission rack is connected with the guide sliding rail in a sliding manner.

The tractor consists of a rotating shaft A, a rotating shaft B, a traction belt, a traction rope and a reset coil spring; a rotating shaft A and a rotating shaft B are symmetrically arranged in the outer sleeve; a traction rope and a reset coil spring are wound on the rotating shaft B; one end of the traction rope penetrates through the inner sleeve and then is connected with the shearing head; the outer ring end of the reset coil spring is connected with the outer sleeve; a driving disc is fixedly arranged at one end of the rotating shaft B; the rotating shaft A is connected with the outer sleeve through a torsion spring; one end of the traction belt bypasses the rotating shaft A from the upper part and is fixedly connected with the lower end surface of the traction belt; the other end of the traction belt is connected with the clamping handle; an extrusion push rod is arranged on a rotating shaft A inside the traction belt through a slide hole and a return spring A; a rotating shaft A at one side of the extrusion push rod is provided with a connecting bolt in a sliding way through a sliding chute and a return spring B; the connecting pin is intermittently connected with the driving disc in an inserting way.

One end of the connecting bolt is provided with a driving inclined plane; the connecting bolt is in sliding connection with the extrusion push rod through the driving inclined plane; the end surface of the driving disc at one side of the connecting bolt is annularly provided with a plurality of inserting holes; the connecting bolt is intermittently connected with the inserting hole in an inserting way.

The shearing head is composed of a connecting cylinder, a transmission mechanism, a positioning mechanism, a cutting saw blade, a fixed clamping finger and a movable clamping finger; one end of the inner sleeve is fixedly provided with a fixed clamping finger through a connecting cylinder; the fixed clamping finger is provided with a movable clamping finger through a rotating pin A and a torsion spring; one end of the movable clamping finger is connected with the traction rope through a transmission mechanism; one side of the movable clamping finger is eccentrically provided with a cutting saw blade through a saw blade motor and a transmission shaft; a positioning mechanism is arranged on the fixed clamp finger on one side of the transmission shaft; the movable clamping finger is movably connected with the positioning mechanism; the positioning mechanism is connected with the transmission shaft in an abutting mode.

The transmission mechanism consists of a transmission rod, a push plate, an extension spring and a compression spring; a pushing plate is arranged on the fixed clamping finger at one side of the movable clamping finger through a rotating pin B; the push plate is in abutting connection with one end of the movable clamping finger; one side of the pushing plate is connected with the fixed clamping finger through a compression spring; one end of the pushing plate is connected with a transmission rod through a rotating pin C; one end of the transmission rod is in sliding connection with a sliding hole arranged on the connecting cylinder through a rotating pin D; one end of the rotating pin D extends into the connecting cylinder; a rotating pin D extending into the connecting cylinder is connected with the traction rope; an extension spring is arranged between one side of the rotating pin D and the connecting cylinder.

The positioning mechanism consists of a limiting sleeve, a pushing rod, a reversing handle, a rotating pin E and a rotating pin F; a limiting sleeve is slidably arranged on the fixed clamping finger at one side of the transmission shaft through a limiting slide rail; one end of the limiting sleeve is provided with a pushing rod in a sliding manner through a sliding chute and a limiting nail; a buffer spring is arranged between the pushing rod and the limiting sleeve; a fixed clamping finger on one side of the pushing rod is provided with a straight slide hole and an arc slide hole which are communicated with each other; a rotating pin E is arranged in the straight sliding hole in a sliding way; the arc-shaped sliding hole is provided with a rotating pin F in a sliding way; the rotating pin E and the rotating pin F are movably connected with each other through a reversing handle; the rotating pin E is rotatably connected with one end of the pushing rod; the rotating pin F is rotatably connected with the movable clamping finger.

One end of the limiting sleeve is provided with a limiting ball head; a limiting counter bore is arranged on the circumferential surface of the transmission shaft; the limiting ball head is intermittently inserted and connected with the limiting counter bore.

The fixed clamping fingers are of a sandwich structure; the fixed clamping finger is internally provided with a movable clamping finger through a rotating pin A; the upper surface of the fixed clamping finger is provided with a straight slide hole and an arc slide hole.

The movable clamping fingers are bent; clamping grooves are formed in the clamping portion of the movable clamping finger at intervals.

Two motor switches are arranged on the outer sleeve on one side of the clamping handle; a motor switch is electrically connected with the driving motor; the other motor switch is electrically connected with the saw blade motor.

The invention has the advantages that:

the fruit picking shears with the telescopic function have simple structure and convenient use; the fruit picking scissors have the function of extending, and can cut off the fruit stalks in a cutting saw blade rotating mode, so that people can easily cut off the fruit stalks of fruits with the stalks when standing under fruit trees; the problem of the intensity of labour that exists when people use ordinary scissors to accomplish fruit and pick at present big and work efficiency is low is solved from this, has satisfied people's use needs.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention with the cutting blade removed;

FIG. 3 is a schematic view of the structure in the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view of the retractor of the invention;

FIG. 5 is an enlarged view of the structure at C in FIG. 4;

FIG. 6 is a schematic sectional view of the rotating shaft A and the traction belt;

FIG. 7 is a schematic top view of the cutting head of the present invention;

FIG. 8 is a front view of the cutting head of the present invention;

FIG. 9 is a schematic structural view of a connector barrel of the present invention;

FIG. 10 is a schematic structural view of a fixed clamping finger and a movable clamping finger of the present invention;

FIG. 11 is an enlarged view of the structure at B in FIG. 2;

FIG. 12 is a schematic cross-sectional view of a stop collar and a push rod of the present invention;

fig. 13 is a front view of the fruit receiving mechanism;

fig. 14 is a left side view of the fruit storage mechanism.

In the figure: 1. a tractor, 2, a buffer wool layer, 3, an outer sleeve, 4, an inner sleeve, 5, a driving gear, 6, a clamping handle, 7, a buffer turning plate, 8, a sleeve body, 9, a transmission rack, 10, a guide slide rail, 11, rotating shafts A, 12, rotating shafts B, 13, a traction belt, 14, a traction rope, 15, a reset coil spring, 16, a driving disc, 17, reset springs A, 18, an extrusion push rod, 19, a reset spring B, 20, a connecting bolt, 21, a driving inclined plane, 22, a connecting cylinder, 23, a cutting saw blade, 24, a fixed clamping finger, 25, a movable clamping finger, 26, a rotating pin A, 27, a saw blade motor, 28, a transmission shaft, 29, a transmission rod, 30, a pushing plate, 31, an extension spring, 32, a compression spring, 33, a rotating pin B, 34, a rotating pin C, 35, a rotating pin D, 36, a limiting sleeve, 37, a pushing rod, 38, a reversing handle, 39, a rotating pin E, 40 and a rotating pin F, 41. the fruit carrying device comprises a limiting slide rail, 42, a straight slide hole, 43, an arc slide hole, 44, a limiting ball head, 45, a buffer spring, 46, a limiting counter bore, 47, a clamping groove, 48, a bottom plate, 49, a lifting seat, 50, a fruit carrying box, 51, a fruit carrying bucket, 52, a telescopic hose, 53, a lifting screw rod, 54, a fruit unloading screw rod, 55 and a guide slide rod.

Detailed Description

The fruit picking scissors with the telescopic function comprise a tractor 1, a clamping handle 6, an outer sleeve 3, an inner sleeve 4, a driving gear 5 and a shearing head.

One end of the outer sleeve 3 is provided with a clamping handle 6 through a pin; the rotation of the clamping handle 6 can be controlled in a hand-held mode during operation.

The other end of the outer sleeve 3 is provided with a driving gear 5 through a driving motor; when the driving motor acts, the driving gear 5 can be driven to rotate forwards or backwards.

An inner sleeve 4 is arranged in the outer sleeve 3 in a sliding way; the inner sleeve 4 consists of a sleeve body 8 and a transmission rack 9; a transmission rack 9 is fixedly arranged on the sleeve body 8; the transmission rack 9 is meshed with the driving gear 5; when the driving gear 5 rotates, the inner sleeve 4 can be driven by the transmission rack 9 to move back and forth in the outer sleeve 3.

The outer sleeve 3 at the two sides of the transmission rack 9 is provided with a guide slide rail 10; the transmission rack 9 is connected with the guide slide rail 10 in a sliding way (see the attached figure 3 in the specification). The purpose of the guide rail 10 is to: the inner sleeve 4 is positioned to move only under the guidance of the guide slide rails 10, thereby avoiding the accident that the inner sleeve 4 is deviated and separated from the driving gear 5.

One end of the inner sleeve 4 extends to the outer end of the outer sleeve; the end of the inner sleeve 4 extending to the outer end of the outer sleeve is provided with a shearing head.

The shearing head is composed of a connecting cylinder 22, a transmission mechanism, a positioning mechanism, a cutting saw blade 23, a fixed clamping finger 24 and a movable clamping finger 25; one end of the inner sleeve 4 is fixedly provided with a fixed clamping finger 24 through a connecting cylinder 22 (see the description and the attached figure 2).

The fixed clamping fingers 24 are in a sandwich structure (see the specification and the attached figure 8); the fixed clamping finger 24 is internally provided with a movable clamping finger 25 through a rotating pin A26 and a torsion spring (not shown in the attached drawings); under the action of the torsion spring, the movable clamping fingers 25 and the fixed clamping fingers 24 are always in an open state in a non-stressed state, so that fruit stalks of fruits can be easily placed in a clamping opening between the movable clamping fingers 25 and the fixed clamping fingers 24 when the fruit clamping device works.

The movable clamping finger 25 is bent; the clamping part of the movable clamping finger 25 is provided with clamping grooves 47 at intervals. The purpose of the clamping groove 47 is to: so that the movable clamping fingers 25 can clamp the fruit stalks of the fruits through the clamping grooves 47 under the matching of the fixed clamping fingers 24, and the problem of 'cutting' the fruit stalks when the clamping parts of the movable clamping fingers 25 are in a plane is avoided.

One end of the movable clamping finger 25 is provided with a transmission mechanism; the transmission mechanism is located on the surface of the clamping finger 24. The transmission mechanism is composed of a transmission rod 29, a push plate 30, an extension spring 31 and a compression spring 32 (see the description of the attached figure 7); the fixed clamping finger 24 on one side of the movable clamping finger 25 is provided with a pushing plate 30 through a rotating pin B33.

One side of the pushing plate 30 is connected with the fixed clamping finger 24 through a compression spring 32; the pushing plate 30 is always pushed outwards by the elastic force of the compression spring 32, and one end of the movable clamping finger 25 is always in interference connection with the pushing plate 30 under the action of the rotating pin A26 and the torsion spring (see the attached figure 7 in the specification). When the pushing plate 30 rotates counterclockwise around the rotating pin B33, one end of the movable clamping finger 25 can be pushed to rotate counterclockwise, so that the clamping portion at the other end of the movable clamping finger 25 is closed to the fixed clamping finger 24, and the purpose of clamping the fruit stem is achieved.

One end of the push plate 30 is connected with a transmission rod 29 through a rotating pin C34; one end of the transmission rod 29 is slidably connected with a sliding hole arranged on the connecting cylinder 22 through a rotating pin D35 (see the description and the attached figure 7).

One end of the rotating pin D35 extends into the connecting cylinder 22; a swivel pin D35 extending into the interior of the connector barrel 22 is connected to the pull-cord 14; an extension spring 31 (see the description and the attached figure 9) is arranged between one side of the rotating pin D35 and the connecting cylinder 22. The tension spring 31 always has a tendency of pulling the rotating pin D35 to move to the right, and when the rotating pin D35 is at the rightmost end position of the sliding hole under the action of the tension spring 31, the transmission rod 29 pushes the pushing plate 30 to the "open" state, so that the movable clamping fingers 25 are in the "open" state.

One side of the movable clamping finger 25 is eccentrically provided with a cutting saw blade 23 through a saw blade motor 27 and a transmission shaft 28 (see the attached figure 1 in the specification); the purpose of mounting the cutting blade 23 "off-center" is to: so that when the cutting saw blade 23 is stopped, the body of the cutting saw blade 23 can be staggered with the clamping parts of the movable clamping finger 25 and the fixed clamping finger 24, thereby being convenient; after the movable clamping fingers 25 and the fixed clamping fingers 24 clamp fruit stalks, part of the body of the cutting saw blade 23 can rotate along with the transmission shaft 28 to pass through the upper parts of the clamping parts of the movable clamping fingers 25 and the fixed clamping fingers 24, so that the aim of cutting the fruit stalks is fulfilled; thus, the problem that the fruit stalks are blocked from entering the clamping openings of the movable clamping fingers 25 and the fixed clamping fingers 24 when the cutting saw blade 23 stops can be avoided.

The fixed clamping finger 24 on one side of the transmission shaft 28 is provided with a positioning mechanism (see the description and the attached figure 11). The positioning mechanism consists of a limiting sleeve 36, a pushing rod 37, a reversing handle 38, a rotating pin E39 and a rotating pin F40; the fixed clamping finger 24 at one side of the transmission shaft 28 is provided with a limit sleeve 36 in a sliding way through a limit slide rail 41. The position-limiting sleeve 36 can move back and forth along the position-limiting slide rail 41.

One end of the limiting sleeve 36 is provided with a limiting ball head 44; a limiting counter bore 46 is arranged on the circumferential surface of the transmission shaft 28; the limiting ball head 44 is intermittently inserted and connected with the limiting counter bore 46. When the limiting ball 44 is inserted into the limiting counter bore 46, the cutting saw blade 23 on the transmission shaft 28 is in an initial state, namely, the body of the cutting saw blade 23 is in a staggered position with the clamping parts of the movable clamping finger 25 and the fixed clamping finger 24.

One end of the limiting sleeve 36 is provided with a pushing rod 37 in a sliding way through a sliding groove and a limiting nail (not shown in the attached drawings of the specification); under the effect of spout and stop pin, push rod 37 can keep sliding connection's state with stop collar 36, has avoided push rod 37 and stop collar 36 to take place the separation accident promptly, can make stop collar 36 remove relative push rod 37 when pressurized again, provides buffer space for stop collar 36.

A buffer spring 45 is arranged between the pushing rod 37 and the limiting sleeve 36; the buffer spring 45 is provided for the purpose of: so that the limiting sleeve 36 and the pushing rod 37 are elastically connected, and when the limiting sleeve 36 is pressed, the limiting sleeve can overcome the elastic force of the buffer spring 45 and contract backwards; therefore, the problem of high wear rate caused by hard contact between the limit sleeve 36 and the transmission shaft 28 when the limit sleeve 36 is in hard contact with the pushing rod 37 can be avoided.

The upper surface of the fixed clamping finger 24 at one side of the pushing rod 37 is provided with a straight sliding hole 42 and an arc sliding hole 43 which are communicated with each other (see the attached figure 10 in the specification); a rotating pin E39 is arranged in the straight sliding hole 42 in a sliding way; the arc-shaped sliding hole 43 is provided with a rotating pin F40 in a sliding way; the rotating pin E39 and the rotating pin F40 are movably connected with each other through a reversing handle 38; the rotating pin E39 is rotatably connected with one end of the pushing rod 37; the rotating pin F40 is rotatably connected with the movable clamping finger 25 (see the description and the attached figure 11). When the movable clamping finger 25 acts, the rotating pin F40 can be driven to slide along the arc-shaped sliding hole 43; the rotating pin F40 can drive the rotating pin E39 to slide in the straight sliding hole 42 through the reversing handle 38 during the sliding process along the arc-shaped sliding hole 43.

A tractor 1 is arranged in the outer sleeve 3 at the other end of the inner sleeve 4; the retractor 1 is composed of a rotating shaft A11, a rotating shaft B12, a traction belt 13, a traction rope 14 and a return coil spring 15 (see the attached figures 2 and 4 of the specification); a rotating shaft A11 and a rotating shaft B12 are symmetrically arranged in the outer sleeve 3. The rotating shaft A11 and the rotating shaft B12 can rotate under the action of external force.

A traction rope 14 and a return coil spring 15 are wound on the rotating shaft B12; one end of the pulling rope 14 passes through the inner sleeve 4 and is connected with a rotating pin D35 of the cutting head. When the pulling rope 14 is pulled, the pulling rope can drive the rotating shaft B12 to rotate, and the pulling rope 14 wound on the rotating shaft B12 is loosened in the rotating process, so that the problem that the inner sleeve 4 cannot extend out of the outer sleeve 3 due to the problem of the pulling rope 14 is avoided. The outer ring end of the reset coil spring 15 is connected with the outer sleeve 3; one end of the rotating shaft B12 is fixedly provided with a driving disc 16.

The rotating shaft A11 is connected with the outer sleeve 3 through a torsion spring; one end of the traction belt 13 is fixedly connected with the lower end surface of the rotating shaft A11 after bypassing the rotating shaft A11 from the upper part; the other end of the traction belt 13 is connected with the clamping handle 6 (see the description and the attached figure 6); the purpose of so assembling the traction belt 13 is: firstly, the rotating shaft A11 can be kept in a tight state with the traction belt 13 under the action of the torsion spring; secondly, when the clamping handle 6 pulls the traction belt 13, the rotating shaft A11 can be driven to rotate anticlockwise, and when the clamping handle 6 is loosened, the rotating shaft A11 can be rapidly restored to the original state under the action of the torsion spring.

The rotating shaft A11 inside the traction belt 13 is provided with an extrusion push rod 18 (see the description and the attached figure 6) through a slide hole and a return spring A17; a connecting bolt 20 (see the description and the attached figure 5) is slidably arranged on a rotating shaft A11 at one side of the extrusion push rod 18 through a sliding groove and a return spring B19; when the connector pin 20 is in the initial state under the action of the return spring B19, the connector pin 20 is kept separated from the drive disc 16.

One end of the connecting bolt 20 is provided with a driving inclined plane 21; the connecting bolt 20 is connected with the extrusion push rod 18 in a sliding way through a driving inclined plane 21; during the inward movement of the pressing rod 18, it can push the connecting pin 20 to move laterally by the driving bevel 21, and thus connect with the driving disk 16.

The end surface of the driving disc 16 at one side of the connecting bolt 20 is provided with a plurality of inserting holes in a circular ring shape; the connecting pin 20 is intermittently inserted into the insertion hole.

Two motor switches (not shown in the attached drawings of the specification) are arranged on the outer sleeve 3 on one side of the clamping handle 6; a motor switch is electrically connected with the driving motor; the other motor switch is electrically connected to the blade motor 27. When a person presses the corresponding motor switch, the rotation of the drive motor or blade motor 27 is controlled.

In order to match the fruit picking shears, the inventor also designs a fruit containing mechanism, which is composed of a bottom plate 48, a lifting seat 49, a fruit carrying box 50, a fruit carrying bucket 51, a telescopic hose 52, a lifting screw 53 and a fruit unloading screw 54 (see the attached figure 13 in the specification).

A lifting seat 49 is arranged on the bottom plate 48 through a screw motor and a lifting screw 53; a guide sliding rod 55 is arranged on the bottom plate 48 at one side of the lifting seat 49; the lifting seat 49 is connected with the guide slide rod 55 in a sliding way; when the lifting screw 53 rotates, the lifting base 49 can be driven to slide up and down along the guide slide rod 55.

A fruit carrying box 50 is arranged on one side of the lifting seat 49 through a lead screw motor and a fruit unloading lead screw 54; the fruit unloading screw 54 can drive the fruit carrying box 50 to move up and down when rotating. In order to ensure that the fruit carrying box 50 and the fruit carrying bucket 51 can move along the track, guide sliding frames can be respectively arranged on the fruit carrying box 50 and the fruit carrying bucket 51, and the guide sliding frames are connected with the guide sliding rods 55 in a sliding way, so that the fruit carrying box 50 and the fruit carrying bucket 51 can be prevented from being deviated.

The top end of the fruit unloading screw rod 54 is provided with a fruit carrying bucket 51 through a bearing seat; the inner surfaces of the fruit carrying box 50 and the fruit carrying bucket 51 are both provided with a buffering soft layer; the purpose of setting up buffering soft layer lies in: the fruit is prevented from being scratched and damaged in the process of falling into the fruit carrying box 50 and the fruit carrying bucket 51.

The bottom surface of the fruit carrying box 50 is an arc surface protruding upwards. The purpose of arranging the fruit carrying box 50 in this way is to: so that the fruit entering the fruit carrying box 50 can move along the arc surface to the periphery of the fruit carrying box 50, thereby avoiding the problem that the fruit blocks the outlet of the flexible hose 52.

The lower end of the fruit carrying bucket 51 is connected with a flexible hose 52; the lower end of the bellows 52 extends to the interior of the bin 50.

The inner wall surface of the flexible hose 52 is uniformly provided with the buffering rough layers 2, and the buffering rough layers 2 can avoid the problem that the inner surface of the flexible hose 52 scratches fruits.

The upper end port and the lower end port of the flexible hose 52 are respectively provided with a buffer turning plate 7 through torsion springs; the purpose of arranging the buffer turning plate 7 is as follows: the buffering turns over board 7 under the effect of torsional spring, can slow down the impact dynamics of fruit, and then has reduced the risk that fruit fell into injury.

This take flexible function's fruit picking scissors during operation, at first place fruit receiving mechanism in the below that needs to cut fruit. Then, the driving motor is started to drive the inner sleeve 4 to extend out of the outer sleeve 3 through the driving gear 5, and when the inner sleeve 4 extends out to a proper position and the cutting head can clamp fruit stalks, the driving motor is turned off.

During the process that the inner sleeve 4 extends outwards, the cutting head drives the pulling rope 14 to move together, and during the moving process of the pulling rope 14, the rotating shaft B12 is driven to rotate after overcoming the elastic force of the return coil spring 15, so that the pulling rope 14 is loosened, and enough pulling rope 14 is provided for the extending of the inner sleeve 4.

After the length of the fruit picking shears is adjusted, the fruit picking shears are moved, so that the fruit stalks of the fruits to be sheared are positioned in the clamping openings of the movable clamping fingers 25 and the fixed clamping fingers 24. Then the clamping handle 6 is gripped to pull the rotating shaft A11 through the traction belt 13, and the rotating shaft A11 is driven to rotate anticlockwise when the traction belt 13 pulls the rotating shaft A11; at the same time, the extrusion push rod 18 is pressed to contract inwards against the elastic force of the return spring A17; during the inward contraction process of the extrusion push rod 18, the connecting bolt 20 is pushed by the driving inclined plane 21 to overcome the elastic force of the return spring B19 and then transversely move, so that the connecting bolt is inserted into the inserting hole in the driving disc 16; thereby rotating the rotation shaft B12 counterclockwise together with the rotation shaft a 11.

During the counterclockwise rotation of the rotating shaft B12, the rotating pin D35 is pulled by the pulling rope 14 to move backwards against the elastic force of the extension spring 31; during the backward movement of the rotating pin D35, the pushing plate 30 is driven by the transmission rod 29 and the rotating pin C34 to rotate counterclockwise around the rotating pin B33 against the elastic force of the compression spring 32.

During the counterclockwise rotation of the pushing plate 30, the movable clamping finger 25 is pushed to rotate around the rotating pin A26, so that the clamping part of the movable clamping finger 25 is close to the fixed clamping finger 24, and finally the fruit stem is clamped.

In the rotating process of the movable clamping finger 25, the movable clamping finger 25 drives the rotating pin F40 to slide along the arc-shaped sliding hole 43 anticlockwise, and in the sliding process of the rotating pin F40, the reversing handle 38 drives the rotating pin E39 to move backwards along the straight sliding hole 42; the rotating pin E39 drives the pushing rod 37 to move backwards together in the backward moving process, so that the elastic deformation of the buffer spring 45 is reduced, the elasticity of the buffer spring 45 is reduced, and when the transmission shaft 28 is stressed to extrude the limiting sleeve 36, the limiting sleeve 36 can overcome the elasticity of the buffer spring 45 and then move backwards, and the problem that the limiting sleeve 36 blocks the transmission shaft 28 to rotate is avoided.

When the movable clamping finger 25 clamps the fruit stem under the cooperation of the fixed clamping finger 24, the saw blade motor 27 is started to drive the cutting saw blade 23 to rotate 360 degrees through the transmission shaft 28 and then stop rotating, and in the process, part of the body of the cutting saw blade 23 can pass through the upper part of the clamping part of the movable clamping finger 25 and the fixed clamping finger 24 along with the rotation of the transmission shaft 28, so that the fruit stem is cut; meanwhile, when the transmission shaft 28 rotates 360 degrees to return to the initial position, the limiting sleeve 36 can enable the limiting ball head 44 to be inserted into the limiting counter bore 46 of the transmission shaft 28 again under the action of the buffer spring 45, so that the transmission shaft 28 is positioned, and the problem of dislocation of the cutting saw blade 23 is solved.

After the fruit stalks are cut off, the clamping handle 6 is loosened, and at the moment, the rotating shaft A11 automatically resets under the action of the torsion spring; the extrusion push rod 18 automatically resets under the action of a return spring A17; the connecting bolt 20 is reset under the action of a reset spring B19; the connecting latch 20 is out of contact with the drive disc 16. The push shield 30 and the transmission rod 29 are then successively reset by the action of the compression spring 32 and the tension spring 31.

In the resetting process of the push plate 30, the movable clamping finger 25 automatically resets under the action of the torsion spring, then the movable clamping finger 25 can reset to be in an open state, and in the resetting process of the movable clamping finger 25, the movable clamping finger 25 drives the rotating pin F40 to clockwise slide along the arc-shaped sliding hole 43; in the sliding process of the rotating pin F40, the pushing rod 37 is driven to move forwards through the reversing handle 38 and the rotating pin E39, and the buffer spring 45 is further pressed, so that the pressure between the limiting ball head 44 on the limiting sleeve 36 and the limiting counter bore 46 of the transmission shaft 28 is larger, and the problem that the cutting saw blade 23 rotates easily is solved.

Then the fruit picking shears can aim at the next fruit to be picked, enter the next working cycle and cut off the fruit stem.

After the fruit stem is cut, the fruit falls into the fruit carrying bucket 51 under the action of its own gravity, and the fruit entering the fruit carrying bucket 51 falls into the flexible hose 52 along the inner conical surface thereof and finally falls into the fruit carrying box 50.

In the process, people can start the screw motor to drive the lifting screw 53 to rotate and drive the lifting seat 49 and the fruit carrying bucket 51 to move upwards, so that the fruit carrying bucket 51 moves upwards to a proper position as much as possible; the distance between the fruit carrying bucket 51 and the fruit is reduced, and the risk of fruit falling injury is reduced.

When the fruit carrying box 50 is filled with fruits, the fruit carrying box 50 can be driven to move downwards to a proper position through the fruit unloading screw rod 54, so that people can take out the fruits in the fruit carrying box 50 conveniently; after the fruit is taken out, the fruit carrying box 50 is driven to reset through the fruit unloading lead screw 54. Thus, the fruit picking work can be completed.

After the fruits are picked, the driving motor can be started to drive the inner sleeve 4 to retract through the driving gear 5, and the driving motor is stopped after the inner sleeve 4 retracts completely. During the retraction of the inner sleeve 4, the rotating shaft B12 will be reversed under the elastic force of the return coil spring 15, so that the redundant pulling rope 14 generated by the retraction of the inner sleeve 4 is rewound on the rotating shaft B12; then the fruit picking shears with the telescopic function can enter the next working cycle.

The fruit picking shears with the telescopic function have simple structure and convenient use; the problem of big and the work efficiency low of intensity of labour that exists when people use ordinary scissors to accomplish fruit and pick at present is solved, people's user demand has been satisfied.

Claims

1. A fruit picking scissors with a telescopic function comprises a tractor (1), a clamping handle (6), an outer sleeve (3), an inner sleeve (4), a driving gear (5) and a shearing head; the method is characterized in that: one end of the outer sleeve (3) is provided with a clamping handle (6) through a pin; the other end of the outer sleeve (3) is provided with a driving gear (5) through a driving motor; an inner sleeve (4) is arranged in the outer sleeve (3) in a sliding way; the inner sleeve (4) is meshed with the driving gear (5); one end of the inner sleeve (4) extends to the outer end of the outer sleeve (3); the end of the inner sleeve (4) extending to the outer end of the outer sleeve (3) is provided with a shearing head; a tractor (1) is arranged in the outer sleeve (3) at the other end of the inner sleeve (4); the clamping handle (6) is connected with the shearing head through the tractor (1); the inner sleeve (4) consists of a sleeve body (8) and a transmission rack (9); a transmission rack (9) is fixedly arranged on the sleeve body (8); the transmission rack (9) is meshed with the driving gear (5); the outer sleeves (3) at the two sides of the transmission rack (9) are provided with guide slide rails (10); the transmission rack (9) is connected with the guide slide rail (10) in a sliding way; the shearing head consists of a connecting cylinder (22), a transmission mechanism, a positioning mechanism, a cutting saw blade (23), a fixed clamping finger (24) and a movable clamping finger (25); one end of the inner sleeve (4) is fixedly provided with a fixed clamping finger (24) through a connecting cylinder (22); the fixed clamping finger (24) is provided with a movable clamping finger (25) through a rotating pin A (26) and a torsion spring; one end of the movable clamping finger (25) is connected with the traction rope (14) through a transmission mechanism; one side of the movable clamping finger (25) is eccentrically provided with a cutting saw blade (23) through a saw blade motor (27) and a transmission shaft (28); a positioning mechanism is arranged on the fixed clamping finger (24) at one side of the transmission shaft (28); the movable clamping finger (25) is movably connected with the positioning mechanism; the positioning mechanism is connected with the transmission shaft (28) in an abutting mode; the positioning mechanism consists of a limiting sleeve (36), a pushing rod (37), a reversing handle (38), a rotating pin E (39) and a rotating pin F (40); a limiting sleeve (36) is slidably arranged on the fixed clamping finger (24) at one side of the transmission shaft (28) through a limiting slide rail (41); one end of the limiting sleeve (36) is slidably provided with a pushing rod (37) through a sliding groove and a limiting nail; a buffer spring (45) is arranged between the pushing rod (37) and the limiting sleeve (36); a fixed clamping finger (24) at one side of the pushing rod (37) is provided with a straight sliding hole (42) and an arc sliding hole (43) which are communicated with each other; a rotating pin E (39) is arranged in the straight sliding hole (42) in a sliding way; the arc-shaped sliding hole (43) is provided with a rotating pin F (40) in a sliding way; the rotating pin E (39) and the rotating pin F (40) are movably connected with each other through a reversing handle (38); the rotating pin E (39) is rotatably connected with one end of the pushing rod (37); the rotating pin F (40) is rotationally connected with the movable clamping finger (25); one end of the limiting sleeve (36) is provided with a limiting ball head (44); a limiting counter bore (46) is arranged on the circumferential surface of the transmission shaft (28); the limiting ball head (44) is intermittently inserted and connected with the limiting counter bore (46); the fixed clamping fingers (24) are of a sandwich structure; a movable clamping finger (25) is arranged in the fixed clamping finger (24) through a rotating pin A (26); the upper surface of the fixed clamping finger (24) is provided with a straight sliding hole (42) and an arc sliding hole (43); the movable clamping finger (25) is bent; clamping grooves (47) are arranged at intervals at the clamping part of the movable clamping finger (25).

2. The fruit picking shears with telescopic function as claimed in claim 1, wherein: the tractor (1) consists of a rotating shaft A (11), a rotating shaft B (12), a traction belt (13), a traction rope (14) and a return coil spring (15); a rotating shaft A (11) and a rotating shaft B (12) are symmetrically arranged in the outer sleeve (3); a traction rope (14) and a reset coil spring (15) are wound on the rotating shaft B (12); one end of a traction rope (14) penetrates through the inner sleeve (4) and then is connected with the shearing head; the outer ring end of the reset coil spring (15) is connected with the outer sleeve (3); one end of the rotating shaft B (12) is fixedly provided with a driving disc (16); the rotating shaft A (11) is connected with the outer sleeve (3) through a torsion spring; one end of the traction belt (13) is wound around the rotating shaft A (11) from the upper part and then is fixedly connected with the lower end surface of the traction belt; the other end of the traction belt (13) is connected with the clamping handle (6); an extrusion push rod (18) is arranged on a rotating shaft A (11) in the traction belt (13) through a slide hole and a return spring A (17); a connecting bolt (20) is slidably arranged on the rotating shaft A (11) at one side of the extrusion push rod (18) through a chute and a return spring B (19); the connecting pin (20) is intermittently connected with the driving disc (16) in an inserting way.

3. The fruit picking shears with telescopic function as claimed in claim 2, wherein: one end of the connecting bolt (20) is provided with a driving inclined plane (21); the connecting bolt (20) is connected with the extrusion push rod (18) in a sliding way through a driving inclined plane (21); the end surface of the driving disc (16) at one side of the connecting bolt (20) is provided with a plurality of inserting holes in a circular ring shape; the connecting plug (20) is intermittently connected with the plug hole in a plug-in manner.

4. The fruit picking shears with telescopic function as claimed in claim 3, wherein: the transmission mechanism consists of a transmission rod (29), a push plate (30), an extension spring (31) and a compression spring (32); a push plate (30) is arranged on the fixed clamping finger (24) at one side of the movable clamping finger (25) through a rotating pin B (33); the push plate (30) is in abutting connection with one end of the movable clamping finger (25); one side of the push plate (30) is connected with the fixed clamping finger (24) through a compression spring (32); one end of the push plate (30) is connected with a transmission rod (29) through a rotating pin C (34); one end of the transmission rod (29) is in sliding connection with a sliding hole arranged on the connecting cylinder (22) through a rotating pin D (35); one end of the rotating pin D (35) extends into the connecting cylinder (22); a rotating pin D (35) extending to the interior of the connecting cylinder (22) is connected with the traction rope (14); an extension spring (31) is arranged between one side of the rotating pin D (35) and the connecting cylinder (22).

5. The fruit picking shears with telescopic function as claimed in claim 4, wherein: two motor switches are arranged on the outer sleeve (3) on one side of the clamping handle (6); a motor switch is electrically connected with the driving motor; the other motor switch is electrically connected to the blade motor (27).