CN111194634A

CN111194634A - Handheld topping machine

Info

Publication number: CN111194634A
Application number: CN202010152727.7A
Authority: CN
Inventors: 李明; 黄晶晶; 周文; 许永伟; 黄香友; 张煜; 戴思慧
Original assignee: Hunan Institute Of Watermelon & Muskmelon; Hunan Agricultural University
Current assignee: Hunan Institute Of Watermelon & Muskmelon; Hunan Agricultural University
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-05-26

Abstract

The invention discloses a handheld top-cutting machine which comprises a machine body and a handheld handle, wherein a machine body through hole which penetrates through the machine body along the movement direction of the machine body is formed in the machine body, a cutting knife for cutting branches is installed at the bottom of the front end of the machine body through hole, a poking plate is rotatably installed above the cutting knife, and the poking plate assists the cutting knife to cut the branches by rotating and pushes the branches cut by the cutting knife to the rear end of the machine body through hole. The shell of the invention is injection molded, the whole machine has compact structure and light weight, the left holding handle is arranged according to the optimal working angle, the holding hand feeling of both hands is better, the gravity center of the whole machine is close to the right handle at the lower part, and the stable operation is convenient; due to the action of the shifting device, the flatness of the topping work is improved. Meanwhile, the combined type poking plate and the structure convenient for dismounting the blade are adopted, so that the combined type poking plate can be conveniently adjusted and replaced according to different working conditions, and the combined type poking plate can better adapt to different topping widths and the physical characteristic requirements of various crops.

Description

Handheld topping machine

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a handheld topping machine.

Background

China is a big agricultural country, and agricultural machinery is increasingly popularized in various agricultural activities in recent years. At present, the mechanized topping machine gradually replaces the traditional plant pruning cutter due to the advantages of greatly improving the topping working efficiency and reducing the working intensity of farmers. However, existing topping machines still have a series of problems, such as only cutting branches without considering the direction of the cut branches, and when the cut branches fall to the direction to be cut, the topping machines interfere with topping work, so that the problems of uneven cutting, repeated cutting, large cutting resistance and the like are caused. Meanwhile, the existing topping machine is only suitable for limited working conditions due to the fact that the topping width is fixed and the blades cannot be replaced, and the application range of the topping machine is limited.

Disclosure of Invention

The present invention aims to provide a hand-held topping machine, thereby solving the above problems.

In order to achieve the purpose, the invention discloses a handheld top-cutting machine which comprises a machine body and a handheld handle, wherein a machine body through hole which is communicated along the motion direction of the machine body is formed in the machine body, a cutting knife for cutting branches is installed at the bottom of the front end of the machine body through hole, a stirring plate is rotatably installed above the cutting knife, and the stirring plate assists the cutting knife to cut the branches by rotating and pushes the branches cut by the cutting knife to the rear end of the machine body through hole.

Further, the fuselage includes casing, lower casing and cutting knife base, go up the removable upside of installing at casing down of casing, and with lower casing bodily form becomes the fuselage through-hole, the removable downside of installing at casing down of cutting knife base, the cutting knife is installed in the cutting knife mounting groove that forms between casing and the cutting knife base down.

Further, the machine body is further provided with a shifting plate driving motor and a shifting plate mounting shaft, the shifting plate mounting shaft is pivoted in the through hole of the machine body, an output shaft of the shifting plate driving motor is coaxially connected with the shifting plate mounting shaft, the shifting plate is coaxially sleeved on the shifting plate mounting shaft, and the shifting plate is provided with a plurality of shifting plate through holes.

Furthermore, the poking plate comprises a plurality of sub poking plates which are connected in parallel in an abutting mode, and the sub poking plates are sleeved on the poking plate installation shaft and rotate coaxially with the poking plate installation shaft.

Furthermore, the sub-toggle plate comprises a shaft sleeve and toggle pieces fixedly connected to two sides of the shaft sleeve, steps for clamping adjacent toggle plates are arranged on the shaft sleeve, a shaft shoulder is arranged on one side of the installation shaft of the toggle plate, and a plurality of locking nuts for locking the sub-toggle plates are arranged at the other end of the installation shaft of the toggle plate.

Furthermore, the section of the shifting sheet is of a rhombic structure with thin two sides and thick middle, a plurality of notch grooves are formed in two sides of the shifting sheet and are arranged along the radial direction of the shaft sleeve, and the notch grooves in the adjacent sub-shifting plates form the shifting plate through holes.

Furthermore, a cutting knife driving motor is installed on one side of the machine body, the cutting knife comprises a fixed cutting knife and a movable cutting knife which is opposite to the fixed cutting knife and performs reciprocating cutting, a connecting rod and an eccentric wheel shaft with an eccentric wheel are coaxially installed on the lower side of the cutting knife driving motor, one end of the connecting rod is pivoted with the eccentric wheel, and the other end of the connecting rod is pivoted with the movable cutting knife.

Further, the bottom of casing is provided with the operation through-hole that link up to the cutting knife mounting groove down, be provided with positioning hole on deciding the cutting knife, move be provided with on the cutting knife with the sliding connection through-hole that positioning hole corresponds, the cutting knife base with bolt assembly is installed to the relative position of operation through-hole, it connects to move the cutting knife through the bolt assembly who runs through positioning hole and sliding connection through-hole and lean on decide on the cutting knife.

Furthermore, the cutting device further comprises a sliding pin which is sleeved on the bolt of the bolt assembly, and one end of the sliding pin is sleeved with a pair of limiting gaskets for axially limiting the fixed cutting knife.

Furthermore, a poking plate driving motor installation shell and a cutting knife driving motor installation shell are formed at the opposite positions of the upper shell and the lower shell, the poking plate driving motor is installed in the poking plate driving motor installation shell in a sealing mode, the cutting knife driving motor is installed in the cutting knife driving motor installation shell in a sealing mode, the cutting edges of the fixed cutting knife and the movable cutting knife are in an angle of 30-60 degrees, and the handheld handle comprises a right-hand handle arranged along the movement direction of the machine body and a left-hand handle forming an included angle of 40-50 degrees relative to the right-hand handle.

Compared with the prior art, the invention has the advantages that:

the shell of the invention is injection molded, the whole machine has compact structure and light weight, the left holding handle is arranged according to the optimal working angle, the holding hand feeling of both hands is better, the gravity center of the whole machine is close to the right handle at the lower part, and the stable operation is convenient; due to the action of the shifting device, the flatness of the topping work is improved. Meanwhile, the combined poking plate can reduce the working resistance and improve the working smoothness. The structure convenient for dismounting the blade is adopted, so that the cutting tool can be conveniently adjusted and replaced according to different working conditions, and the cutting tool can better adapt to different topping widths and the physical characteristic requirements of various crops. Meanwhile, the electric power is adopted as a driving mode, no pollutant is discharged, the pollution is greatly reduced by replacing the existing fossil fuel powered topping machine, and the electric power topping machine is more environment-friendly.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is an axial schematic view of a hand-held topping machine according to an embodiment of the present disclosure;

FIG. 2 is a schematic front view of a hand-held topping machine according to an embodiment of the present invention;

FIG. 3 is a schematic left-side view of a hand-held topping machine according to an embodiment of the present invention;

FIG. 4 is a schematic sectional view A-A of FIG. 3;

FIG. 5 is a schematic transmission diagram of a cutter and a cutter driving motor of the hand-held topping machine disclosed by the embodiment of the invention;

FIG. 6 is a schematic diagram of a matching structure of a toggle plate driving motor, a toggle plate and a toggle plate mounting shaft of the hand-held jack according to the embodiment of the present invention;

FIG. 7 is a schematic structural view of a sub-toggle plate of the hand-held topping machine according to the embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a movable cutter of the hand-held topping machine disclosed by the embodiment of the invention;

FIG. 9 is a schematic structural diagram of the fixed cutters with different lengths of the hand-held topping machine disclosed by the embodiment of the invention;

fig. 10 is a schematic structural diagram of cutters with different cutting edge angles of the hand-held topping machine disclosed by the embodiment of the invention.

Illustration of the drawings:

1. a body; 2. a fuselage through-hole; 3. cutting; 4. a poking plate; 5. an upper housing; 6. a lower housing; 7. a cutting knife base; 8. a cutting knife mounting groove; 9. a toggle plate drive motor; 10. a poking plate is arranged on the shaft; 11. a toggle plate through hole; 12. a shaft sleeve; 13. a shifting sheet; 14. a step; 15. a notch groove; 16. a shaft shoulder; 17. locking the nut; 18. a cutting knife driving motor; 19. a cutting knife is fixed; 20. moving a cutting knife; 21. a connecting rod; 22. an eccentric wheel; 23. an eccentric wheel shaft; 24. a working through hole; 25. positioning the through hole; 26. the through hole is in sliding connection; 27. a bolt assembly; 28. a slide pin; 29. a limiting gasket; 30. the poking plate driving motor is arranged on the shell; 31. the cutting knife driving motor is arranged on the shell; 32. a right holding handle; 33. a left holding handle; 34. a bolt; 35. a nut; 36. a bearing bore; 37. a rolling bearing; 38. a sub toggle plate.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1-10, the embodiment of the invention discloses a handheld topping machine, which comprises a machine body 1 and a handheld handle, wherein a machine body through hole 2 which is through along the moving direction of the machine body 1 is arranged on the machine body 1, a cutting knife 3 for cutting branches is arranged at the bottom of the front end of the machine body through hole 2, a stirring plate 4 is rotatably arranged above the cutting knife 3, and the stirring plate 4 is used for assisting in cutting the branches and pushing the branches cut by the cutting knife 3 to the rear end of the machine body through hole 2 through rotation, so that the cut branches can be timely discharged from the rear side of the machine body through hole 2 in the topping process of the cutting knife 3, and the problems of uneven cutting, repeated cutting, large cutting resistance and the like caused by the fact that the cut branches fall to the direction to be cut are generated to the topping work are avoided.

Specifically, the machine body 1 is further provided with a poking plate driving motor 9 and a poking plate mounting shaft 10, the poking plate mounting shaft 10 is pivoted in the through hole 2 of the machine body, an output shaft of the poking plate driving motor 9 is coaxially connected with the poking plate mounting shaft 10 (a D-shaped hole counter bore is formed in the poking plate mounting shaft 10, an output shaft of the poking plate driving motor 9 is a D-shaped shaft head inserted into the D-shaped hole counter bore), and the poking plate 4 is coaxially sleeved on the poking plate mounting shaft 10, so that the poking plate driving motor 9 drives the poking plate 4 to rotate to discharge cut branches.

In this embodiment, the machine body 1 includes an upper case 5, a lower case 6 and a cutter base 7, a toggle plate mounting shaft 10 is pivotally connected to a bearing hole 36 formed at a joint surface position of the upper case 5 and the lower case 6, a rolling bearing 37 is provided in the bearing hole 36, both ends of the toggle plate mounting shaft 10 are engaged with the rolling bearing 37, wherein the upper case 5 and the lower case 6 are injection molded, the upper case 5 is detachably mounted on an upper side of the lower case 6 by screw coupling, bosses and counter bores are provided on the joint surface of the upper case 5 and the lower case 6 to be nested with each other, so that a misalignment between the upper case 5 and the lower case 6 can be prevented, the upper case 5 and the lower case 6 form a machine body through hole 2, the cutter base 7 is an aluminum casting member to secure sufficient rigidity, and is also detachably mounted on a lower side of the lower case 6 by screw coupling, the cutter 3 is mounted in a cutter mounting groove 8 formed between the lower case 6 and the cutter, thus, the cutting blade 3 can be replaced when the cutting blade base 7 is removed.

In this embodiment, the toggling plate 4 is composed of a plurality of sub toggling plates 38 arranged in parallel on the toggling plate mounting shaft 10, each sub toggling plate 38 comprises a shaft sleeve 12 and a toggling piece 13 fixedly connected to the shaft sleeve 12, a step 14 for clamping adjacent sub toggling plates 38 is arranged on the shaft sleeve 12, so that all sub toggling plates 38 can rotate coaxially, the phenomenon that the toggling plates 4 are integrally clamped when facing a firm branch is prevented by adopting a split assembly mode, in order to ensure smooth work, the split assembly mode is adopted, the part with excessively high branch accumulation corresponding to the sub toggling plate 38 generates elastic deformation, and the part returns to normal after crossing. The two sides of the poking sheet 13 are provided with the notch grooves 15, and the notch grooves 15 of the two adjacent and close sub-poking plates 38 are oppositely arranged to form a poking plate through hole 11, so that when the poking plate 4 rotates, airflow can flow away through the poking plate through hole 11, the rotating resistance of the poking plate 4 is further reduced, the wind noise is reduced, the strong wind force formed on the cut branches is avoided, and the energy consumption is also reduced. For further optimization, in the present embodiment, the cross section of the poking sheet 13 adopts a diamond structure with two narrow ends and a thin middle, so that the airflow is guided to the through holes 11 of the poking plate on both sides, and the airflow is more smoothly and rapidly circulated. A shoulder 16 is provided on one side of the dial plate mounting shaft 10, and a lock nut 17 for locking the plurality of dial plates 4 is provided on the other side, and the lock nut 17 presses the boss 12 against the shoulder 16, thereby ensuring coaxial rotation of the dial plates 4 and the dial plate mounting shaft 10 by friction.

In this embodiment, a cutting knife driving motor 18 is installed on a side of the machine body 1 opposite to the toggle plate driving motor 9, the cutting knife 3 includes a fixed cutting knife 19 and a movable cutting knife 20 for reciprocating cutting relative to the fixed cutting knife 19, both of which are saw blade type structures, a connecting rod 21 and an eccentric wheel shaft 23 with an eccentric wheel 22 are coaxially installed on a lower side of the cutting knife driving motor 18 (the eccentric wheel shaft 23 is sleeved with a rolling bearing 37), one end of the connecting rod 21 is pivoted with the eccentric wheel 22, and the other end is pivoted with the movable cutting knife 20, so that a slider-crank structure is formed among the movable cutting knife 20, the connecting rod 21 and the eccentric wheel shaft 23, and the rotation of the cutting knife driving motor 18 is converted.

In this embodiment, the bottom of the lower housing 6 is provided with a working through hole 24 penetrating through the cutting blade mounting groove 8, the fixed cutting blade 19 is provided with a positioning through hole 25, the movable cutting blade 20 is provided with a sliding through hole 26 corresponding to the positioning through hole 25, the cutting blade base 7 is provided with a bolt assembly 27 (including a bolt 34 and a nut 35, the bolt 34 passes through the sliding through hole 26, the positioning through hole 25 and the cutting blade base 7 at one time, the nut 35 is connected with the bolt 34 from the lower side of the cutting blade base 7), the movable cutting blade 20 abuts against the fixed cutting blade 19 through the bolt assembly 27 penetrating through the positioning through hole 25 and the sliding through hole 26, and further, the cutting device further comprises a sliding pin 28, the sliding pin 28 is sleeved on the bolt 34 of the bolt assembly 27, and one end of the sliding pin 28 is sleeved with a pair of limiting gaskets 29 for axially limiting the fixed cutting blade 19, the sliding pin 28 can perform a transverse positioning function on the fixed cutting blade 19, on the other hand, the movable cutter 20 can be guided, the sliding pin 28 can be replaced by a wear-resistant self-lubricating material as a quick-wear part, so that the friction damage of the bolt assembly 27 is protected, the bolt assembly 27 can be screwed down through the operation through hole 24, and the limit gasket 29 limits the vertical displacement of the fixed cutter 19 and the movable cutter 20.

In this embodiment, a toggle plate driving motor mounting housing 30 and a cutting knife driving motor mounting housing 31 are formed at the opposite positions of the upper housing 5 and the lower housing 6, the toggle plate driving motor 9 is hermetically mounted in the toggle plate driving motor mounting housing 30, the cutting knife driving motor 18 is hermetically mounted in the cutting knife driving motor mounting housing 31, and both the toggle plate driving motor mounting housing 30 and the cutting knife driving motor mounting housing 31 are provided with ribs to support the outer cylindrical surfaces of the motors, thereby achieving the effects of isolating, damping and reducing noise.

In the embodiment, the cutting edge angle of the cutting edges of the fixed cutter 19 and the movable cutter 20 is 30-60 degrees, and the length of the fixed cutter 19 is 100-250mm, so that different combinations can be formed with the movable cutter to realize different performances. .

In this embodiment, the hand-held handle includes the right hand-held handle 32 that sets up along the fuselage direction of motion, and the right hand-held handle 32 is close to cutting knife driving motor 18, bears the most weight of fuselage 1, also accords with the operating habit to and hold the handle 33 for a left side that the handle 32 is 45 contained angles relatively to the right hand-held handle, and the handle 33 is held on a left side mainly plays supplementary stabilizing effect, is favorable to improving operating stability and flexibility.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a handheld top-cutting machine, includes fuselage (1) and handheld handle, its characterized in that, be provided with one on fuselage (1) along fuselage through-hole (2) that fuselage (1) direction of motion link up, cutting knife (3) that are used for cutting off the branch are installed to the bottom of fuselage through-hole (2) front end, stirring board (4) are installed to the rotatable formula in top of cutting knife (3), stirring board (4) are supplementary through rotating cutting knife (3) cutting branch will cutting knife (3) branch after cutting off is pushed to the rear end of fuselage through-hole (2).

2. The hand-held topping machine according to claim 1 wherein the machine body (1) comprises an upper casing (5), a lower casing (6) and a cutter base (7), the upper casing (5) being detachably mounted on an upper side of the lower casing (6) and forming the machine body through hole (2) with the lower casing (6), the cutter base (7) being detachably mounted on a lower side of the lower casing (6), the cutter (3) being mounted in a cutter mounting groove (8) formed between the lower casing (6) and the cutter base (7).

3. The hand-held top-beating machine according to claim 2, characterized in that the machine body (1) is further provided with a toggle plate driving motor (9) and a toggle plate mounting shaft (10), the toggle plate mounting shaft (10) is pivoted in the machine body through hole (2), an output shaft of the toggle plate driving motor (9) is coaxially connected with the toggle plate mounting shaft (10), the toggle plate (4) is coaxially sleeved on the toggle plate mounting shaft (10), and the toggle plate (4) is provided with a plurality of toggle plate through holes (11).

4. The hand-held top-striking machine according to claim 3, wherein said toggle plate (4) comprises a plurality of sub-toggle plates (38) abutted in parallel, said sub-toggle plates (38) being sleeved on said toggle plate mounting shaft (10) and rotating coaxially with said toggle plate mounting shaft (10).

5. The hand-held top-beating machine according to claim 4, characterized in that the sub-stirring plates (38) comprise a shaft sleeve (12) and stirring sheets (13) fixedly connected to two sides of the shaft sleeve (12), a step (14) for clamping adjacent sub-stirring plates (38) is arranged on the shaft sleeve (12), a shaft shoulder (16) is arranged on one side of the stirring plate mounting shaft (10), and a locking nut (17) for locking a plurality of sub-stirring plates (38) is arranged on the other end.

6. The hand-held top-striking machine according to claim 5, characterized in that the cross section of the poking sheet (13) is of a rhombus structure with thin two sides and thick middle, a plurality of notched grooves (15) are arranged on two sides of the poking sheet (13), the notched grooves (15) are arranged along the radial direction of the shaft sleeve (12), and the notched grooves (15) on the adjacent sub-poking plates (38) form the poking plate through holes (11).

7. The hand-held top-cutting machine according to any one of claims 2 to 6, characterized in that a cutting knife driving motor (18) is installed at one side of the machine body (1), the cutting knife (3) comprises a fixed cutting knife (19) and a movable cutting knife (20) which cuts reciprocally relative to the fixed cutting knife (19), a connecting rod (21) and an eccentric wheel shaft (23) with an eccentric wheel (22) are coaxially installed at the lower side of the cutting knife driving motor (18), one end of the connecting rod (21) is pivoted with the eccentric wheel (22), and the other end is pivoted with the movable cutting knife (20).

8. The hand-held topping machine according to claim 7, wherein the bottom of the lower casing (6) is provided with an operation through hole (24) penetrating through to the cutter mounting groove (8), the fixed cutter (19) is provided with a positioning through hole (25), the movable cutter (20) is provided with a slip joint through hole (26) corresponding to the positioning through hole (25), the cutter base (7) and the position opposite to the operation through hole (24) are provided with a bolt assembly (27), and the movable cutter (20) abuts against the fixed cutter (19) through the bolt assembly (27) penetrating through the positioning through hole (25) and the slip joint through hole (26).

9. The hand-held topping machine according to claim 8 further comprising a sliding pin (28), wherein the sliding pin (28) is sleeved on a bolt (34) of the bolt assembly (27), and one end of the sliding pin (28) is sleeved with a limit gasket (29) for axially limiting the fixed cutter (19).

10. The hand-held top-beating machine according to claim 7, characterized in that a striking plate drive motor mounting housing (30) and a cutter drive motor mounting housing (31) are formed at a position where the upper housing (5) and the lower housing (6) are opposed, the striking plate drive motor (9) is hermetically mounted in the striking plate drive motor mounting housing (30), the cutter drive motor (18) is hermetically mounted in the cutter drive motor mounting housing (31), the cutting edge angle of the cutting edge of the fixed cutter (19) and the movable cutter (20) is 30 ° to 60 °, and the hand-held handle comprises a right hand-held handle (32) provided along the moving direction of the machine body (1) and a left hand-held handle (33) forming an angle of 40 ° to 50 ° with respect to the right hand-held handle (32).