CN210987051U - Special cutting device for self-propelled weeding machine - Google Patents

Abstract

The utility model discloses a from special cutting device of walking weeder, it belongs to garden machine technical field. The cutting device overcomes the defects of complex rope winding and low efficiency of the cutting device in the traditional cutting device of the weeding machine in the prior art. Its major structure includes wear-resisting disc, second change valve, first commentaries on classics valve and connecting piece, be equipped with the bearing in the wear-resisting disc, the outer lane at the bearing is installed to wear-resisting disc, and the second changes the valve and installs the inner circle at the bearing with wear-resisting disc concentric installation and second, first commentaries on classics valve is installed on the second changes the valve, and wear-resisting disc, bearing, second change valve and first commentaries on classics valve are passed in proper order from the bottom up to the connecting piece. The utility model discloses the small-size hand propelled lawn mower of mainly used.

Description

Special cutting device for self-propelled weeding machine

The technical field is as follows:

the utility model belongs to the technical field of garden machine, specifically speaking especially relates to a from walking special cutting device of weeder.

Background art:

the portable mower has very wide application in the market. The common side-hung and backpack mower is easy to cause fatigue of operators and reduces the working efficiency. In order to change the current situation, people invent a self-propelled weeding machine, so that the labor intensity of an operator is greatly reduced, and the working efficiency is improved.

Cutting devices of self-propelled weeders in the market at present are roughly divided into two types: one type is a single disc type, namely only one disc is provided, the grass cutting rope is wound on the disc, and the single disc is adopted, so that the disc rubs with the ground during working, the rotating speed of the disc is reduced, and the working efficiency is reduced to some extent. And secondly, the double-disc type cutting machine adopts a double-disc type structure, the double-disc independent operation can be realized, the working efficiency is improved, and the problems of complex disassembly and cutting device and low replacement efficiency exist.

The invention content is as follows:

the to-be-solved technical problem of the utility model is overcome prior art not enough, provide a from walking special cutting device of weeder, its rotational speed and work efficiency are higher, change the valve through the second and the first cooperation of changeing the valve, simple installation, it is very fast when changing the nylon rope, improved installation and change efficiency.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

the utility model provides a from special cutting device of walking weeder, includes wear-resisting disc, second change valve, first change valve and connecting piece, be equipped with the bearing in the wear-resisting disc, the outer lane at the bearing is installed to wear-resisting disc, and the second changes the valve and installs the inner circle at the bearing with wear-resisting disc concentric installation and second, first change valve is installed on the second changes the valve, and wear-resisting disc, bearing, second change valve and first change valve are passed in proper order from the bottom up to the connecting piece.

Preferably, the second rotary valve is provided with a nylon rope, the lower end of the first rotary valve is provided with a plurality of pin shafts, and a certain gap is formed between the lower end of each pin shaft and the second rotary valve.

Preferably, the second rotary valve is provided with a positioning hook and a guide block, the first rotary valve is provided with a positioning buckle and a guide groove, the positioning hook is installed in a matched mode with the positioning buckle, and the guide block is installed in a matched mode with the guide groove.

Preferably, the upper end of the bearing is provided with a retainer ring.

Preferably, the connecting member is a bolt.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model has higher rotating speed and working efficiency, simple and convenient installation through the matching of the second rotary valve and the first rotary valve, quicker replacement of the nylon rope and improved installation and replacement efficiency;

2. the positioning clamping hook and the guide block on the second rotary valve are matched with the positioning buckle and the guide groove on the first rotary valve for use, so that the rapid installation and disassembly are realized;

3. the directional winding of the nylon rope is realized through the pin shaft, and the directional distance of the nylon rope can be realized, so that the working efficiency of installation and replacement is greatly improved;

4. through set up wear-resisting disc below the nylon rope, make wear-resisting disc play certain effect that blocks the foreign matter, can not hinder the nylon rope, and wear-resisting disc can also play the supplementary effect of cutting the grass.

Description of the drawings:

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

fig. 2 is an exploded view of the present invention.

In the figure: 1. a bolt; 2. a wear-resistant disc; 3. a bearing; 4. a retainer ring; 5. a second rotary valve; 6. a nylon cord; 7. a pin shaft; 8. a first rotary valve; 9. a guide groove; 10. a positioning hook; 11. positioning a buckle; 12. and a guide block.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

Example 1:

as shown in fig. 1-2, a cutting device special for a self-propelled weeding machine comprises a wear-resistant disc 2, a second rotary valve 5, a first rotary valve 8 and a connecting piece, wherein a bearing 3 is arranged in the wear-resistant disc 2, the wear-resistant disc 2 is arranged on an outer ring of the bearing 3, the second rotary valve 5 and the wear-resistant disc 2 are arranged concentrically, the second rotary valve 5 is arranged on an inner ring of the bearing 3, the first rotary valve 8 is arranged on the second rotary valve 5, and the connecting piece sequentially penetrates through the wear-resistant disc 2, the bearing 3, the second rotary valve 5 and the first rotary valve 8 from bottom to top; the second rotary valve 5 and the first rotary valve 8 are clamped together and rotate together, and the wear-resistant disc 2 and the second rotary valve 5 rotate separately.

The second is equipped with nylon rope 6 on changeing valve 5, and the lower extreme of first commentaries on classics valve 8 is equipped with a plurality of round pin axle 7, and the lower extreme of round pin axle 7 is equipped with certain clearance with the second between changeing valve 5, and the clearance be 1 ~ 2mm can. The second rotary valve 5 is recessed into the center by one circle of holes, the nylon rope 6 is wound in the holes of the second rotary valve 5 by one circle, the rotating speed of the nylon rope 6 can reach 7500-8000 r/min, if the nylon rope 6 is used for cutting alone, the rope breaks suddenly when the foreign matter is hit, the wear-resistant disc 2 plays a certain role in blocking the foreign matter, and the nylon rope 6 cannot be damaged; the function of the wear-resistant disc 2 is therefore: firstly, the guide function and secondly the function of auxiliary cutting are realized. The effect of round pin axle 7 is for 6 guide effects of nylon rope, and nylon rope 6 plays the effect of blockking through round pin axle 7 when high-speed operation, prevents that nylon rope 6 from scattering, can also prevent the foreign matter entering simultaneously.

The second rotary valve 5 is provided with two positioning hooks 10 and two guide blocks 12, the first rotary valve 8 is provided with a positioning buckle 11 and a guide groove 9, the positioning hooks 10 are installed in a matched mode with the positioning buckle 11, and the guide blocks 12 are installed in a matched mode with the guide groove 9, so that rapid installation and disassembly are achieved. The second rotary valve 5 is divided into an upper layer, a middle layer and a lower layer, a gap is arranged between the middle layer and the lower layer, the nylon rope 6 is conveniently wound, and the positioning hook 10 and the two guide blocks 12 are arranged on the upper layer.

The upper end of the bearing 3 is provided with a retainer ring 4, and the outer ring of the retainer ring 4 is embedded into the wear-resistant disc 2 to prevent the bearing 3 from moving in the rotating process.

The second rotary valve 5 and the first rotary valve 8 rotate together to function as: firstly, the nylon rope 6 is provided with rotary power, and secondly, the friction force between the second rotary valve 5 and the first rotary valve 8 is reduced.

The connecting piece is a bolt 1, and the bolt 1 is connected with the whole gear box combination to provide power for rotation.

The utility model discloses the theory of operation of installation use does:

the lawn mower during operation, wear-resisting disc 2 and ground contact, the first commentaries on classics valve 8 and the second of upper end change valve 5, rotate together under the support of bearing 3, after 6 wearing and tearing of nylon rope shorten, can be through the winding mode that changes round pin axle 7, realize the extension of nylon rope 6, after wearing and tearing, change the winding direction again, when changing nylon rope 6, press location buckle 11 on first commentaries on classics valve 8, clockwise rotation is followed, first commentaries on classics valve 8, second commentaries on classics valve 5 just can rotate through guide way 9, thereby realize quick dismantlement, after 6 installations of nylon rope are accomplished, rethread guide way 9, rotate first commentaries on classics valve 8, second commentaries on classics valve 5, make the second change location pothook 10 on the valve 5 install in the location buckle 11 on first commentaries on classics valve 8.

Claims (5)

1. The utility model provides a self-propelled special cutting device of weeder which characterized in that: including wear-resisting disc (2), second change valve (5), first commentaries on classics valve (8) and connecting piece, be equipped with bearing (3) in wear-resisting disc (2), the outer lane at bearing (3) is installed in wear-resisting disc (2), and second changes valve (5) and second commentaries on classics valve (5) concentric installation and the inner circle installed at bearing (3) with wear-resisting disc (2), first commentaries on classics valve (8) are installed on second commentaries on classics valve (5), and the connecting piece from the bottom up passes wear-resisting disc (2), bearing (3), second commentaries on classics valve (5) and first commentaries on classics valve (8) in proper order.

2. The cutting device for a self-propelled herbicide as set forth in claim 1, wherein: the second rotary valve (5) is provided with a nylon rope (6), the lower end of the first rotary valve (8) is provided with a plurality of pin shafts (7), and a certain gap is formed between the lower end of each pin shaft (7) and the second rotary valve (5).

3. The cutting device for a self-propelled herbicide machine according to claim 1 or 2, wherein: the rotary valve is characterized in that a positioning clamping hook (10) and a guide block (12) are arranged on the second rotary valve (5), a positioning buckle (11) and a guide groove (9) are arranged on the first rotary valve (8), the positioning clamping hook (10) is installed in a matched mode with the positioning buckle (11), and the guide block (12) is installed in a matched mode with the guide groove (9).

4. The cutting device for a self-propelled herbicide machine according to claim 1 or 2, wherein: and the upper end of the bearing (3) is provided with a check ring (4).

5. The cutting device for a self-propelled herbicide machine according to claim 1 or 2, wherein: the connecting piece is a bolt (1).

Images