CN213029183U

CN213029183U - A protection device for machine of beating grass

Info

Publication number: CN213029183U
Application number: CN202021424811.1U
Authority: CN
Inventors: 王开勇; 周晓杰; 李峥
Original assignee: Beijing Jingcai Yanyuan Garden Technology Co ltd; Beijing Jingcai Hongjing Garden Engineering Co ltd
Current assignee: Beijing Jingcai Yanyuan Garden Technology Co ltd; Beijing Jingcai Hongjing Garden Engineering Co ltd
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-23
Anticipated expiration: 2030-07-17

Abstract

The utility model relates to a protection device for grass mower belongs to afforestation's technical field, has solved current grass mower when mowing, easily harms surrounding environment such as nursery stock, enclosure, nursery stock support frame for the lower technical problem of weeding efficiency. The grass trimmer comprises a grass trimming head and a connecting rod, wherein the grass trimming head is connected to one end of the connecting rod, the protection device comprises a disc-shaped protection piece and a connecting assembly, the protection piece is arranged above the grass trimming head, the protection piece is connected to the connecting rod through the connecting assembly, and the protection piece covers the maximum grass trimming range of the grass trimming head during grass trimming. This application has the high-efficient technological advantage of effect of weeding when external environment such as protection nursery stock, enclosure and nursery stock support frame is not destroyed.

Description

A protection device for machine of beating grass

Technical Field

The application relates to the technical field of landscaping, in particular to a protection device for a grass trimmer.

Background

For the landscaping industry, a grass trimmer is often needed to treat weeds around seedlings. The existing grass trimmer is a backpack grass trimmer and comprises a grass trimming head and a grass trimming host, wherein the grass trimming host comprises a connecting rod, a driving device, a power supply device and a handle, the grass trimming head is connected to one end of the connecting rod, and the driving device and the power supply device are connected to one end, far away from the grass trimming head, of the connecting rod. The grass mowing head comprises a spool and a grass mowing rope arranged on the spool, and the driving device drives the spool to rotate at a high speed so as to drive the grass mowing rope to move at a high speed and then cut weeds. The handle is arranged at the position, close to the driving device, of the connecting rod, and an operator can grab the grass trimmer stably in the process of using the grass trimmer.

In the process of weeding by using the grass mower, as the area needing weeding is not a completely open grassland and a nursery garden with more nursery stocks is planted around the area needing weeding, if the grass mower is too close to the nursery stocks in the process of weeding, the trunks of the nursery stocks are cut and damaged, thus damaging the nursery stocks; or in the process of weeding at an enclosure or the like, if the mower is too close to the enclosure, the enclosure can be damaged. Therefore, when weeds in the special area are treated, a grass cutter is not used for weeding at a position far away from the area where weeds cannot be removed, so that weeds around seedlings, enclosing walls, seedling support frames and the like cannot be completely removed, weeds can be removed only in a manual mode, and weeding efficiency is low. Or the seedling, the enclosing wall, the seedling support frame and the like can be damaged to ensure higher weeding efficiency.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the purpose of this application provides a protection device for lawn mower, and it has the efficient effect of weeding when external environment such as protection nursery stock, enclosure and nursery stock support frame can not destroyed.

The above application purpose of the present application is achieved by the following technical solutions: the utility model provides a protection device for machine of beating grass, the machine of beating grass is including beating the grass head and connecting rod, the head of beating grass is connected the one end of connecting rod, protection device is including setting up discoid protection piece and the coupling assembling above the head of beating grass, the protection piece passes through coupling assembling connects on the connecting rod, the protection piece covers the biggest range of beating grass when beating grass of the head of beating grass.

Through adopting above-mentioned technical scheme, when meetting nursery stock, enclosure or nursery stock strutting arrangement, because protection piece has covered the biggest grass cutting scope when the head of beating grass is beaten grass, consequently, what last at first contacted with nursery stock, enclosure or nursery stock strutting arrangement is the protection piece on the grass cutter, rather than beating the head of beating grass, when protection piece run into nursery stock, enclosure or nursery stock strutting arrangement etc. promptly remove grass cutter can for do not injure nursery stock, enclosure or nursery stock strutting arrangement etc. and carry out more high-efficient and complete weeding.

Preferably, the protection member includes a tray body; coupling assembling include with the first connecting rod that the disk body is connected, first connecting rod is close to the perpendicular first connecting rod axial direction of one end of beating the grass head is connected with the second connecting rod, the second connecting rod is kept away from the one end and the connecting rod of first connecting rod are connected.

Through adopting above-mentioned technical scheme, realize the simple efficient of protection piece and connecting rod and connect.

Preferably, the second connecting rod is sleeved with a sleeve which moves along the axial direction of the second connecting rod, and the first connecting rod is fixedly connected with the sleeve.

Through adopting above-mentioned technical scheme, when protection piece run into nursery stock, enclosure or nursery stock strutting arrangement etc. for protection piece has certain buffering displacement range, reduces the damage to coupling assembling department.

Preferably, the second connecting rod is provided with a first spring, one end of the first spring is fixedly connected with the sleeve, and the other end of the first spring is fixedly connected with one end of the second connecting rod, which is far away from the first connecting rod.

By adopting the technical scheme, the arrangement of the first spring further increases the buffer effect of the protection piece on the axial direction of the second connecting rod, and further reduces the damage to the connecting component; and the spring is arranged to reset the protecting piece in the axial direction of the second connecting rod.

Preferably, the connecting rod is provided with a rotating rod axially parallel to the first connecting rod, and the second connecting rod is rotatably connected with the rotating rod.

Through adopting above-mentioned technical scheme, realized the protection piece at the swing on its disk body place plane, further increase the buffer range of protection piece, further protection coupling assembling reduces the damage to coupling assembling.

Preferably, a second spring and a third spring are arranged between the disc body and the connecting rod, and the second spring and the third spring are symmetrically arranged by taking the second connecting rod as a center.

By adopting the technical scheme, when the protection piece swings on the plane where the disc body of the protection piece is located, the second spring and the third spring are arranged, so that the protection piece can be timely reset at the initial position on the plane where the disc body of the protection piece is located.

Preferably, the periphery of the disc body is provided with a flexible blocking sheet for blocking the grass cutting head.

Through adopting above-mentioned technical scheme, avoid weeds to fly injury operating personnel after the spill.

Preferably, the disk body is sleeved with a rubber ring.

Through adopting above-mentioned technical scheme, further reduced the protection piece and contacted the injury to nursery stock, enclosure or nursery stock strutting arrangement etc. such as nursery stock, enclosure or nursery stock strutting arrangement.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the device is arranged at the grass mowing head of the conventional grass mowing machine, so that when the grass mowing machine grass is mowed at the positions of nursery stocks, enclosing walls or nursery stock supporting devices and the like, grass mowing ropes are prevented from directly striking the nursery stocks, the enclosing walls or the nursery stock supporting devices and the like, the effect of protecting the nursery stocks, the enclosing walls or the nursery stock supporting devices and the like is achieved, and the grass mowing machine has the advantage of being more efficient;

2. in the application, the first connecting rod and the second connecting rod are sleeved and the second connecting rod and the connecting rods are rotatably connected, so that when the protection piece is collided with a seedling, an enclosing wall or a seedling supporting device and the like, the protection piece has a certain buffer protection effect, and the damage of the acting force after collision to the connecting assembly is reduced;

3. first spring, second spring and third spring's setting in this application for protection piece slides on the second connecting rod or can in time reset at initial position when using the dwang as the swing of center.

Drawings

FIG. 1 is a schematic view of the overall structure of the protection device of the present application on a grass mower.

Fig. 2 is a schematic diagram showing the structure of the protection device.

Fig. 3 is a schematic diagram showing the structure of the connecting assembly.

In the figure, 1, grass mowing head; 11. beating a straw rope; 2. a connecting rod; 3. a protection device; 31. a tray body; 311. a flexible baffle sheet; 312. a rubber ring; 32. a connecting assembly; 321. a first link; 322. a second link; 3221. a stopper; 323. a sleeve; 324. a first spring; 33. a rotating assembly; 331. a fixed block; 3311. a groove; 332. rotating the rod; 333. a second spring; 334. a third spring; 4. a drive member; 5. a handle; 6. a power supply device.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

As shown in fig. 1 and 2, the present application provides a protection device for a grass trimmer, the grass trimmer comprises a connecting rod 2 and a grass trimming head 1 connected to one end of the connecting rod 2, and the grass trimming head 1 comprises a spool and a grass trimming rope 11 arranged on the spool. One side of the grass mowing head 1, which deviates from the ground when grass is mowed, is provided with a driving device 4 for driving a spool in the grass mowing head 1 to rotate at a high speed, so that the grass mowing rope 11 is driven to rotate at a high speed, and the purpose of cutting weeds is achieved. One end of the connecting rod 2, which is far away from the grass mowing head 1, is provided with a power supply device 6 for supplying power to the driving device 4. The position of the grass trimmer far away from the grass trimming head 1 is connected with a handle 5, so that the grass trimming position can be conveniently adjusted during grass trimming.

In order to avoid the damage of the nursery stock, the enclosing wall or the nursery stock supporting device and the like by the grass cutting rope 11 in the grass cutting process, a protection device 3 is arranged above the grass cutting head 1, and as shown in fig. 2, the protection device 3 comprises a disc-shaped protection piece and a connecting component 32 for connecting the protection piece and the connecting rod 2. The protective element is a disc or a ring, and in the embodiment shown, the protective element is a disc which is positioned on the side of the driving device 4 away from the grass-mowing head 1. The disc covers the maximum grass mowing range of the grass mowing head 1 during grass mowing so as to ensure that the disc is firstly contacted with the nursery stock, the enclosing wall or the nursery stock supporting device and the like in the grass mowing process, and then an operator adjusts the position of the grass mowing head 1 at once to avoid the grass mowing rope 11 from damaging the nursery stock, the enclosing wall or the nursery stock supporting device and the like. Meanwhile, the weeds around the seedlings, the enclosing wall or the seedling support device and the like can be removed more thoroughly and completely.

The disc includes the disk body 31 and the rubber circle 312 of cover establishing outside the disk body 31, and the setting of rubber circle 312 makes when the disc is close to nursery stock, enclosure or nursery stock strutting arrangement etc. at first rubber circle 312 bumps nursery stock, enclosure or nursery stock strutting arrangement etc. and has certain shock attenuation cushioning effect, has both reduced the injury to nursery stock, enclosure or nursery stock strutting arrangement etc. simultaneously also reduced the damage to the mechanical connection structure of disc department.

As shown in fig. 2 and 3, the connecting assembly 32 includes a first connecting rod 321 coaxially connected to the disk 31, one end of the first connecting rod 321 close to the grass-mowing head 1 is connected to a second connecting rod 322 perpendicular to the axial direction of the first connecting rod 321, and one end of the second connecting rod 322 far from the first connecting rod 321 is connected to the connecting rod 2. The disc and the rotation axis of the grass mowing head 1 are coaxially arranged, so that a grass mowing plane of the grass mowing head 1 during grass mowing is parallel to a plane where the disc body 31 is located, and the arrangement facilitates position judgment of an operator on the grass mowing plane during grass mowing and operation; meanwhile, when the grass-mowing process encounters the nursery stock, the enclosing wall or the nursery stock supporting device and the like, the disc body 31 of the disc can rapidly slide over the protected object (the nursery stock, the enclosing wall or the nursery stock supporting device and the like). The disk body 31 is fixedly connected or rotatably connected with the first connecting rod 321, the disk body 31 and the first connecting rod 321 are rotatably connected in the embodiment, and when the disk touches a seedling, an enclosure wall or a seedling supporting device and the like, the grass cutting head 1 is conveniently and quickly away from the protected object such as the seedling, the enclosure wall or the seedling supporting device and the like by the rotatable connection mode.

As shown in fig. 3, the second connecting rod 322 is externally sleeved with a sleeve 323, the inner diameter of the sleeve 323 is larger than the outer diameter of the second connecting rod 322, and the sleeve 323 moves along the axial direction of the second connecting rod 322 under the action of an external force. When the disc touches the seedling, the enclosing wall or the seedling support device, the collision acting force between the two causes the disc to be subjected to an acting force which drives the disc to move along the axial direction of the second connecting rod 322, when the sleeve 323 can move on the second connecting rod 322, the rigid acting force which is subjected to the disc and the connecting component 32 is converted, the disc has a certain buffer moving range, and the damage to the connecting component 32 is reduced.

In order to further increase the buffering effect on the acting force of the disc and the second connecting rod 322 in the axial direction of the second connecting rod 322 and further reduce the damage to the connecting component 32, a first spring 324 is arranged on the second connecting rod 322, one end of the first spring 324 is fixedly connected with one end of the sleeve 323 far away from the first connecting rod 321, and the other end of the first spring 324 is fixedly connected with one end of the second connecting rod 322 far away from the first connecting rod 321. At the same time, the first spring 324 is disposed to also restore the disk in the axial direction of the second link 322. When the disc drives the first link 321 and the sleeve 323 to move along the axial direction of the second link 322 to be close to the connection of the second link 322 and the connecting rod 2 under the external acting force, the first spring 324 is compressed; then, under the force of the first spring 324, the sleeve 323 moves away from the connection between the second link 322 and the connecting rod 2, so that the disc is restored to the initial position.

In order to prevent the sleeve 323 from sliding out of the second link 322, a stopper 3221 is integrally formed at one end of the second link 322 near the first link 321.

Furthermore, a rotating component 33 is arranged on the connecting rod 2, the rotating component 33 comprises a fixed block 331 fixedly connected to the connecting rod 2, a groove 3311 is arranged on one side of the fixed block 331 facing the disc, a rotating rod 332 is clamped in the groove 3311, and the rotating rod 332 is arranged in parallel with the axis of the first connecting rod 321; an end of the second link 322 remote from the first link 321 is rotatably connected to the rotating lever 332. The arrangement of the swivel assembly 33 enables the disc to be swivelingly connected to the connecting rod 2 and to be swiveled about the swivel rod 332, i.e. a swinging movement of the protection on the plane of its disc 31 is achieved.

When the grass trimmer touches the nursery stock, the enclosing wall or the nursery stock supporting device and the like from the side surface of the grass trimmer, an acting force for driving the disc to swing on the plane where the disc surface is located can be given to the disc, and the arrangement of the rotating assembly 33 further increases the buffer range of the disc in the direction, further protects the connecting assembly 32 and reduces the damage of the external acting force to the connecting assembly 32.

In order to be able to return the disc to its initial position in time on the plane of its disc 31 when it oscillates on the plane of its disc 31, a second spring 333 and a third spring 334 are provided between the disc 31 and the connecting rod 2, as shown in fig. 2. One ends of the second spring 333 and the third spring 334 are fixedly connected with the connecting rod 2, and the other ends of the second spring 333 and the third spring 334 are fixedly connected with the edges of the two sides of the disc respectively; the second spring 333 and the third spring 334 are located at both sides of the second link 322 and are symmetrically disposed with the second link 322 as a symmetry axis.

The periphery of the disk body 31 is provided with a flexible blocking sheet 311 which is used for blocking the grass mowing head 1, one end of the flexible blocking sheet 311 is fixedly connected to the edge of the disk body 31, and the other end of the flexible blocking sheet 311 is drooping towards the grass mowing head 1. A plurality of flexible stoppers 311 are provided at intervals on the circumferential surface of the tray body 31. The flexible flap 311 prevents some of the weed from splashing and reduces the force of the splashed weed.

The implementation process of the embodiment is as follows: the driving device is opened, the grass mowing rope 11 is rotated at a high speed under the action of the driving device, and grass mowing is started. When the grass-mowing machine encounters the nursery stock, the enclosing wall or the nursery stock supporting device and the like, the acting force applied to the disc by the nursery stock, the enclosing wall or the nursery stock supporting device and the like causes the disc to move towards the rotating component 33 on the second connecting rod 322, and the first spring 324 is compressed; and at the same time, the disk swings about the rotating rod 332, so that one of the second spring 333 and the third spring 334 is stretched. Then, under the action of the first spring 324, the position of the disk on the second link 322 is gradually reset; the position of the disc on the connecting rod 2 is gradually reset by the second spring 333 and the third spring 334.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a protection device for machine of beating grass, the machine of beating grass is including beating grass head (1) and connecting rod (2), beat grass head (1) and connect the one end of connecting rod (2), its characterized in that: protection device (3) are including setting up discoid protection piece and coupling assembling (32) above grass cutting head (1), the protection piece passes through coupling assembling (32) connect in on connecting rod (2), the protection piece covers the biggest grass cutting scope when grass cutting head (1) is cut grass.

2. A protection device for a lawnmower according to claim 1, wherein: the protector includes a disc (31); coupling assembling (32) include with first connecting rod (321) that disk body (31) are connected, first connecting rod (321) are close to the perpendicular first connecting rod (321) axial direction of one end of beating grass head (1) is connected with second connecting rod (322), second connecting rod (322) are kept away from the one end and the connecting rod (2) of first connecting rod (321) are connected.

3. A protection device for a lawnmower according to claim 2, wherein: the second connecting rod (322) is sleeved with a sleeve (323) moving along the axial direction of the second connecting rod (322), and the first connecting rod is fixedly connected with the sleeve (323).

4. A protection device for a lawnmower according to claim 3, wherein: the second connecting rod (322) is provided with a first spring (324), one end of the first spring (324) is fixedly connected with the sleeve (323), and the other end of the first spring (324) is fixedly connected with one end, far away from the first connecting rod (321), of the second connecting rod (322).

5. A protection device for a lawnmower according to claim 2, wherein: be provided with on connecting rod (2) with dwang (332) of first connecting rod (321) axial parallel arrangement, second connecting rod (322) with dwang (332) rotate to be connected.

6. A protection device for a lawnmower according to claim 5, wherein: a second spring (333) and a third spring (334) are arranged between the disc body (31) and the connecting rod (2), and the second spring (333) and the third spring (334) are symmetrically arranged by taking the second connecting rod (322) as a center.

7. A protection device for a lawnmower according to claim 2, wherein: the periphery of the disc body (31) is provided with a flexible blocking sheet (311) which shields the grass cutting head (1).

8. A protection device for a lawnmower according to claim 2, wherein: the outer sleeve of the tray body (31) is provided with a rubber ring (312).