CN217064603U

CN217064603U - Prevent rolling up grass aircraft nose and weeder

Info

Publication number: CN217064603U
Application number: CN202220832321.8U
Authority: CN
Inventors: 黄灵巧
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-07-29
Anticipated expiration: 2032-04-11

Abstract

The utility model provides a prevent roll up careless aircraft nose and weeder belongs to agricultural machine technical field. The utility model solves the problems of the prior weeding machine such as easy grass coiling, inconvenient assembly and the like, and comprises a head shell, wherein a rotating shaft is arranged on the head shell and is connected with a cutter which rotates synchronously; the fixed disc is fixed on the head shell and provided with an inwards concave cavity, and the rotating shaft penetrates through the cavity; the rotating shaft penetrates through the rotating disc, and a clamping part is arranged on the rotating shaft and locks the rotating disc on the rotating shaft; the rotary table and the rotating shaft synchronously rotate, the top of the rotary table is attached to the cutter, and the rotary table covers the exposed part of the rotating shaft from the cutter to the bottom surface of the cavity; a space is arranged between the outer wall of the rotary table and the inner wall of the cavity, and the cutter spans the space. The utility model can avoid weeds not winding on the rotating shaft and improve the working efficiency; in addition, the motor, the grass blocking plate, the chassis, the rotary drum and other structures are reasonable in design, and the installation is convenient and fast.

Description

Prevent roll up grass aircraft nose and weeder

Technical Field

The utility model belongs to the technical field of agricultural machine, concretely relates to prevent roll up careless aircraft nose and weeder.

Background

When the existing weeding machine weeds in a place with more weeds, grass is easy to roll or twine, weeds are easy to fill between a transmission mechanism and a shaft, the running resistance is increased, and the grass rolling enables the running speed of the weeding machine to be reduced and even stops running, so that the weeding efficiency is reduced, and the machine is easy to damage.

1. In the prior art, the grass winding prevention disc is designed to prevent weeds from being involved in the rotating shaft, and particularly the novel split type brush cutter is disclosed in CN 209201539U.

CN209201539U structurally includes a cutter guard against the upper surface of the cutter, and the cut grass is rolled onto the cutter guard so that it does not enter the spindle. However, the problem is that the cutter A and the cutter can not completely cover the opening of the cutter shield, when the rotating speed of the cutter is slow, weeds can easily enter the cutter shield from the gap, and the grass can be wound on the rotating shaft.

2. Also, for example, patent publication No. CN206196347U discloses a tooth-protecting type grass-winding preventing device for garden machinery, which is improved to completely cover the opening of the grass-winding preventing disc with a cutter. Although problem a is solved, its knife needs to be specially made and the machine cannot use traditional long knives or grass cutting ropes.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure is compact, simple to operate is swift to the above-mentioned shortcoming that current weeder exists, and prevent roll up careless aircraft nose and weeder.

The purpose of the utility model can be realized by the following technical proposal: prevent rolling up careless aircraft nose includes:

the head shell is provided with a rotatable rotating shaft, and the rotating shaft is connected with a cutter which rotates synchronously;

the fixed disc is fixed on the head shell and provided with an inwards-concave cavity, and the rotating shaft penetrates through the cavity;

the rotating shaft penetrates through the rotating disc, clamping parts are arranged at two ends of the rotating shaft, and the rotating disc is locked on the rotating shaft by the clamping parts;

the rotary table and the rotating shaft rotate synchronously, the top of the rotary table is attached to the cutter, and the rotary table covers the exposed part of the rotating shaft from the cutter to the bottom surface of the cavity;

and a space is reserved between the outer wall of the rotary disc and the inner wall of the cavity, and the cutter spans the space.

The rotary disc is cylindrical;

the bottom of the rotary table is an open end, the top of the rotary table is a closed end, the open end faces the bottom surface of the cavity, a first shaft hole is formed in the closed end, and the rotary shaft penetrates through the first shaft hole to enable the shaft body of the rotary shaft to be located in the cavity of the rotary table;

the cutter is provided with a second shaft hole, the rotating shaft can penetrate through the second shaft hole, and the cutter is attached to the end face of the closed end of the rotary disc.

The rotating shaft is provided with threads, the clamping component comprises a nut or a boss arranged on the rotating shaft, and the nut is in threaded fit with the rotating shaft;

the rotary disc is clamped between the nut and the boss;

the knife is simultaneously confined between the nut and the top of the carousel.

The boss comprises a shaft sleeve, the shaft sleeve is fixedly connected with the rotating shaft, and the shaft sleeve and the rotating shaft synchronously rotate.

The boss is propped against the bottom surface of the rotating shaft, the boss limits the distance from the bottom of the rotating disc to the bottom surface of the cavity, and a gap for eliminating the rotating friction force is arranged between the bottom of the rotating disc and the bottom surface of the cavity.

The carousel is the barrel form, the carousel bottom is open end, and the top is the blind end, the boss top is at the pivot bottom surface, and the distance between the bottom of boss restriction carousel to the cavity bottom surface, the bottom and the cavity bottom surface of carousel just touch and connect, and the axle body of pivot is located the closed cavity that carousel and fixed disc formed.

The rotary table is positioned in the middle of the fixed table, an annular groove is formed between the outer wall of the rotary table and the inner wall of the cavity of the fixed table at an interval, when the rotary table rotates, the inner wall of the cavity is kept still, and the outer wall of the rotary table generates circumferential rotation driving force for straw rods in the annular groove.

The cutter is attached to the notch of the annular groove, and the cutter scrapes and cuts the notch of the annular groove when rotating.

Another technical scheme, prevent rolling up careless aircraft nose includes:

the method is characterized in that: the rotary table is arranged, the rotary table is sleeved on the rotary shaft, the rotary shaft penetrates through the rotary table, a boss and/or a nut are arranged on the rotary shaft, the boss and/or the nut are arranged on two sides of the rotary table and clamp the rotary table on the rotary shaft, the top of the rotary table is attached to a cutter, the bottom of the rotary table covers the rotary shaft below the cutter exposed out of the head shell and shields the cutter, and the rotary table, the rotary shaft and the cutter rotate synchronously.

Another subject matter is a weeding machine, which comprises a handrail and an anti-rolling machine head, wherein the handrail and the anti-rolling machine head are connected together.

The weeding machine is characterized by comprising a handrail and the anti-rolling machine head, wherein the handrail and the anti-rolling machine head are connected together.

Compared with the prior art, the utility model is provided with the turntable and the fixed plate, the shaft body of the rotating shaft is hidden by the turntable, so that weeds are prevented from being wound on the rotating shaft when the weeding machine works, and in addition, the size of the turntable is large enough, so that the weeds cannot be wound on the rotating shaft, and the working efficiency cannot be influenced by grass winding when the weeding machine works; in addition, the connection and fixation mode of the cutter, the rotary disc and the rotary shaft is simple, the design among the structures such as the motor, the grass baffle, the fixed disc and the rotary disc is reasonable, and the installation is convenient and fast.

Drawings

FIG. 1 is a schematic view of the overall structure of the weeding machine of the present invention;

FIG. 2 is a schematic view of a part of the structure of the weeding machine of the present invention;

FIG. 3 is a schematic structural view of the grass rolling prevention machine head of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic structural diagram of the turntable of the present invention.

In the figure, 1, a skull; 2. a rotating shaft; 3. a cutter; 4. a grass baffle; 5. a motor; 6. a bearing mounting portion; 7. a turntable; 8. fixing a disc; 9. a threaded end; 10. an open end; 11. a closed end; 12. a first shaft hole; 13 second shaft holes; 14. an annular groove; 15. a nut; 16. a shaft sleeve; 17. a handrail; 18. a long rod; 19. a hand holding part.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The utility model relates to an aim at preventing that the weeder from at the during operation, the winding of straw pole has reduced herbicidal efficiency in the pivot to and stifled commentaries on classics scheduling problem.

As shown in fig. 1-5, the utility model comprises two parts, a handrail 17 and a machine head. Wherein, the conventional armrest 17 includes a long bar 18 and a grip part 19, the grip part 19 is provided at one end of the long bar 18, and the other end of the long bar 18 is connected with the head housing 1.

The handpiece has two structures, one is that the handpiece is provided with a motor, and then the holding part 19 is also provided with a battery.

The other is that the machine head is provided with a change gear, and the hand holding part 19 is also provided with a motor and a battery, and the power is transmitted to the machine head through a soft rod.

The machine head is an anti-curling machine head which has the following structure:

the grass rolling prevention machine head comprises a head shell 1, a rotating shaft 2, a cutter 3, a grass baffle 4, a driving mechanism and a grass rolling prevention mechanism.

For example, the driving mechanism comprises a motor 5, the motor 5 is arranged in a head shell 1 matched with the shape of the motor, the head shell 1 consists of a left shell and a right shell, one end of the head shell 1 is provided with a bearing installation part 6, a bearing is positioned in the bearing installation part 6, a rotating shaft 2 is arranged at the power output end of the motor 5, and the rotating shaft 2 penetrates through a shaft hole of the bearing and is exposed outside the head shell 1.

The rotating shaft 2 can be integrated with the power output end of the motor 5, and the rotating shaft 2 can be independently taken out to be connected with the power output shaft.

The grass blocking plate 4 is in the prior art, the grass blocking plate 4 is in a fan shape and is fixed at one end, close to the cutter 3, of the head shell 1, and the arc-shaped edge of the grass blocking plate 4 is provided with a blocking surface. When weeding, fender 4 can play the effect of blockking, prevents to cut thing or small stone etc. and splashes, guarantees safety.

Prevent roll up careless mechanism:

design of A basis

The grass rolling prevention mechanism comprises a rotary table 7 sleeved on the rotary shaft 2 or the axial direction of the rotary shaft 2, and the rotary shaft 2 is exposed out of the head shell 1.

The rotating shaft 2 is provided with a clamping component for locking the rotating disc 7 at a specific position of the rotating shaft 2. Preferably, the rotating shaft 2 has a threaded end 9, the threaded end 9 of the threaded end 9 is provided with a nut 15, and the lower end of the rotating shaft 2 is provided with a boss. The nut 15 presses the tool 3 on top of the turntable 7, while the nut 15 limits the upward movement of the turntable 7 and the tool 3, the convex surface of the boss abutting against the lower surface of the turntable 7. After the structure is adopted for locking, the rotating shaft 2, the rotating disc 7 and the cutter 3 are fastened.

The rotating shaft 2, the rotating disc 7 and the cutter 3 synchronously rotate. Preferably, the boss and the rotating shaft 2 are integrally formed, a threaded end 9 with a smaller shaft diameter is turned on the rotating shaft 2, and the part with a larger shaft diameter is the boss. More preferably, the boss comprises a sleeve 16, and the sleeve 16 and the rotating shaft 2 are fixed and can rotate synchronously. Such as a threaded fit of the sleeve 16 and the shaft 2.

Alternatively, the turntable 7 and the rotating shaft 2 may be fixed by two upper and lower nuts 15, and the shaft sleeve 16 is replaced by one nut, which is also regarded as a boss.

The top of the rotary table 7 is attached to the lower surface of the cutter 3, and the rotary table 7 covers the cutter 3 to the exposed part of the rotating shaft 2 of the head shell 1. The diameter of the rotating shaft 2 is too small to easily wind weeds, and the size of the rotating disc 7 is larger than that of the rotating shaft 2 to prevent weeds from easily winding thereon. The larger the diameter of the rotating disc 7, the less likely weeds will be wound thereon.

B, composite design:

the grass rolling prevention mechanism comprises a rotary disc 7 and a fixed disc 8 which are sleeved on the rotating shaft 2 or the rotating shaft 2 in the axial direction, the fixed disc 8 is fixed on the head shell 1, and the fixed disc 8 is connected with the head shell 1 through screws. The fixed disc 8 is provided with a cavity which is concave inwards, and the fixed disc 8 can also be expressed as a cavity with an opening, the rotating shaft 2 passes through the cavity, and the opening of the cavity faces the ground in a mowing state.

Preferably, the rotating shaft 2 is located at the center of the rotating disc 7 and the fixed disc 8. The rotating disk 7 and the fixed disk 8 belong to concentric circles. The rotating disc 7 is also positioned in the cavity, and the rotating shaft 2 penetrates through the rotating disc 7. The bottom surface of the fixed plate 8 is provided with a round hole for the rotating shaft 2 to pass through. The fixed disc 8 is sleeved on the bearing mounting part 6 through a circular hole, and the size of the fixed disc 8 is larger than that of the rotary disc 7.

The both ends of the rotation shaft 2 are provided with clamping members which lock the turntable 7 at a specific position of the rotation shaft 2. Preferably, the threaded end 9 of the rotating shaft 2 is provided with a nut 15, and the lower end of the rotating shaft 2 is provided with a boss. The nut 15 presses the tool 3 on top of the turntable 7, while the nut 15 limits the upward movement of the turntable 7 and the tool 3, the convex surface of the boss abutting against the lower surface of the turntable 7. After the structure is adopted for locking, the rotating shaft 2, the rotating disc 7 and the cutter 3 are fastened.

Preferably, the boss and the rotating shaft 2 are integrally formed, a threaded end 9 with a smaller shaft diameter is turned on the rotating shaft 2, and the part with a larger shaft diameter is the boss. More preferably, the boss comprises a sleeve 16, and the sleeve 16 and the rotating shaft 2 are fixed and can rotate synchronously. Such as a threaded fit of the sleeve 16 and the shaft 2.

Alternatively, the turntable 7 and the rotating shaft 2 may be fixed by two upper and lower nuts 15, and the sleeve 16 may be replaced by one nut.

The top of the rotary table 7 is attached to the lower surface of the cutter 3, and the rotary table 7 covers the exposed part of the rotary shaft 2 from the cutter 3 to the bottom surface of the cavity. Preferably, the diameter of the rotating disc 7 is more than 4cm, and the diameter of the rotating disc 7 is 8 cm-20 cm. The diameter of the rotating shaft 2 is too small to easily wind weeds, and the size of the rotating disc 7 is larger than that of the rotating shaft 2 to prevent weeds from easily winding thereon. The larger the diameter of the rotary table 7 is, the less likely weeds are wound on the rotary table, and the diameter of the rotary table 7 has a proper range in combination with the whole weeding machine. One of the embodiments of the present invention is that the diameter of the rotary disk 7 is 10 cm.

The turntable 7 may be a solid body. Preferably, in order to reduce the weight of the rotating disk 7, the rotating disk 7 is cylindrical, one end of the rotating disk 7 is an open end 10, the open end 10 faces the bottom surface of the cavity, the other end of the rotating disk is a closed end 11, and the closed end 11 is a plane. The closed end 11 is provided with a first shaft hole 12, the cutter 3 is provided with a second shaft hole 13, the rotating shaft 2 can penetrate through the first shaft hole 12 and the second shaft hole 13, and the cutter 3 is attached to the closed end 11. And the cutter 3 and the rotary table 7 are locked on the rotating shaft 2 together by a nut 15, and the three can rotate synchronously.

The boss limits the distance between the bottom of the rotary table 7 and the bottom surface of the cavity, and preferably, a gap for eliminating the rotating friction force is arranged between the bottom of the rotary table 7 and the bottom surface of the cavity. Or the bottom of the rotary table 7 is just contacted with the bottom surface of the cavity, and the shaft body of the rotating shaft 2 is positioned in a closed cavity formed by the rotary table 7 and the fixed disc 8.

Another anti-curl design is:

because the rotary table 7 is positioned in the middle of the fixed table 8, an annular groove 14 is formed between the outer wall of the rotary table 7 and the inner wall of the cavity of the fixed table 8, when the rotary table 7 rotates, the inner wall of the cavity keeps still, and the outer wall of the rotary table 7 generates circumferential rotation driving force for straw rods in the annular groove 14.

When weeding, it is difficult to prevent the straw from entering the grass to the cavity direction of the fixed plate 8, so the annular groove 14 is designed, and when the outer wall of the rotary plate 7 drives the inner ring of the straw to rotate circumferentially, the outer ring of the straw and the outer ring of the straw form a differential speed. It can also be understood that the inner wall of the cavity limits the rotation of the straw rod by friction. Therefore, when the straw is wound outside the rotary disc 7, the straw can not always rotate at the same speed with the rotary disc 7, and the straw can be conveniently separated from the rotary disc 7 and extruded out of the annular groove 14 after the straw and the rotary disc 7 slip. The width of the annular groove 14 is also required to be above 1cm, at least to ensure that the straw can fall directly out of the annular groove 14 in most cases.

The cutter 3 is attached to the notch position of the annular groove 14, the cutter 3 spans the annular groove 14, and the cutter 3 scrapes and cuts the notch of the annular groove 14 when rotating. The cutter 3 comprises a strip-shaped knife or a big straw rope.

It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended manner, i.e. in a manner equivalent to "including at least … …", and not in a closed manner, i.e. in a manner not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Prevent roll up careless aircraft nose, its characterized in that includes:

the rotating shaft penetrates through the rotating disc, a clamping part is arranged on the rotating shaft, and the rotating disc is locked on the rotating shaft by the clamping part;

2. The anti-curl grass handpiece of claim 1, wherein the turntable is barrel-shaped;

the cutter is provided with a second shaft hole, the rotating shaft can penetrate through the second shaft hole, and the cutter is attached to the end face of the closed end of the rotating drum.

3. The anti-curl grass handpiece of claim 1, wherein the rotating shaft is provided with threads, and the clamping member comprises a nut or a boss provided on the rotating shaft, the nut being in threaded engagement with the rotating shaft;

the rotary disc is clamped between the nut and the boss;

4. The anti-curl handpiece of claim 3, wherein the boss includes a hub, the hub being fixedly connected to the shaft, the hub and shaft rotating in unison.

5. The head as claimed in claim 3, wherein the protrusion is disposed on the bottom of the shaft to limit the distance between the bottom of the turntable and the bottom of the cavity, and a gap is disposed between the bottom of the turntable and the bottom of the cavity to eliminate the rotational friction.

6. The anti-curl grass handpiece of claim 3, wherein the rotary disc is cylindrical, the bottom of the rotary disc is an open end, the top of the rotary disc is a closed end, the boss abuts against the bottom surface of the rotary shaft, the boss limits the distance from the bottom of the rotary disc to the bottom surface of the cavity, the bottom of the rotary disc is just in contact with the bottom surface of the cavity, and the shaft body of the rotary shaft is located in a closed cavity formed by the rotary disc and the fixed disc.

7. The anti-curl handpiece of claim 1, wherein the turntable is located in the middle of the fixed plate, and the distance between the outer wall of the turntable and the inner wall of the cavity of the fixed plate forms an annular groove, so that when the turntable rotates, the inner wall of the cavity is kept still, and the outer wall of the turntable generates circumferential rotation power to the straw rod in the annular groove.

8. The anti-curl handpiece of claim 7, wherein the cutter is attached to the notch of the annular groove, and the cutter scrapes the notch of the annular groove when rotating.

9. Prevent roll up careless aircraft nose includes:

10. A weeding machine comprising a handrail and an anti-curl head as claimed in any one of claims 1 to 9, wherein the handrail is connected to the anti-curl head.