CN211020024U

CN211020024U - Small hand-push type lawnmower

Info

Publication number: CN211020024U
Application number: CN201822254560.6U
Authority: CN
Inventors: 楼纪国; 刘刚强
Original assignee: Shanghai Jian Qiao University
Current assignee: Shanghai Jian Qiao University
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-17
Anticipated expiration: 2028-12-29

Abstract

The utility model relates to a small-size lawnmower of hand propelled, including frame, cutting device, grass bits collection device and switching-over device, wherein: the frame is provided with wheels and a push-pull mechanism; the cutting device consists of a fixed blade and a movable blade which are matched, and the fixed blade is fixed at the front end of the frame; the straw scrap collecting device consists of a reel arranged in a matching way with the cutting device and a containing box arranged behind the reel, and the reel is rotatably connected with the frame through a rotating shaft and rotates along with the wheels; the reversing device is used for converting the rotating motion of the wheel into the transverse reciprocating motion of the movable blade. Compared with the prior art, the utility model has the advantages of the quality is light, easy operation, the noise is low, with low costs, the operation of shearing is stable, low carbon environmental protection, adaptability are good.

Description

Small hand-push type lawnmower

Technical Field

The utility model relates to a lawnmower especially relates to a small-size lawnmower of hand propelled.

Background

At present, the hand-push type lawnmowers on the market mostly adopt power machine engines, and the transmission mode mainly comprises: hobbing cutter type, rotary cutter type, throwing cutter type and throwing rope type. Such lawnmowers generate loud noises and cause environmental pollution, and particularly in offices and learning places, the lawnmowers which need power engines are very unpopular. Because the power engine grass mower is provided with the power device, the maintenance cost is higher; meanwhile, the power engine grass mower mainly discharges grass by means of high-speed rotation of the blade, so that the safety requirement on the whole machine is high, strong vibration can be brought to workers during operation, and people feel uncomfortable after long-time operation.

The reel comprises a common reel, an eccentric reel and a gear hobbing forced vertical reel, the common reel has simple structure, relatively light weight and low manufacturing cost, is applied to a cutter-rower and a small and medium-sized combine harvester, but has poor adaptability to lodging crops and serious attack to the crops. It is composed of shifting plate, spokes, lacing wires, shaft and bearing, supporting arm and supporting rod. When the straw pulling device works, the straw pulling wheel rotates relative to the machine, and the pulling plate plays roles in pulling straws, lifting straws, cutting straws and pulling straws.

The cutter transmission mechanism of the reciprocating cutter may employ a steering type crank link mechanism of a space type crank link mechanism.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small-size lawnmower of hand propelled in order to overcome the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

A hand propelled lawnmower comprising:

A frame, wheels and a push-pull mechanism are arranged on the frame,

The cutting device consists of a fixed blade and a movable blade which are matched, the fixed blade is fixed at the front end of the frame,

The grass chip collecting device consists of a reel matched with the cutting device and a containing box arranged behind the reel, the reel is rotatably connected with the frame through a rotating shaft and rotates along with the wheels,

And the reversing device is used for converting the rotating motion of the wheels into the transverse reciprocating motion of the movable blade.

Preferably, the reversing device comprises a disc, a connecting rod, a swinging part and a crank arm which are sequentially connected in a transmission manner, the disc and the reel are coaxial, the swinging part is hinged on the frame and can swing in a horizontal plane under the driving of the connecting rod, and the crank arm drives the movable blade to transversely reciprocate.

Preferably, the swing part is in a boomerang shape, the vertex is hinged on the frame, and two ends of the swing part are respectively connected with the connecting rod and the crank arm.

Preferably, the frame on be equipped with height-adjustable's mount, fixed blade sets up on the frame through the mount, movable blade makes horizontal reciprocating motion for fixed blade through setting up the transverse guide on fixed blade, the goods of furniture for display rather than for use is articulated with the mount.

Preferably, the rotating shafts of the disc and the reel are in transmission connection with the wheels through a chain wheel type speed increasing mechanism, the chain wheel type speed increasing mechanism consists of a toothed disc coaxial with the wheels, a flywheel arranged on the rotating shafts and a chain used for connecting the toothed disc and the flywheel, and the diameter of the flywheel is smaller than that of the toothed disc. Through the chain wheel type speed increasing mechanism and the crank connecting rod type reversing device, on one hand, the rotating speed is increased, on the other hand, the transmission direction is changed, and the rotation in the vertical direction is converted into the transverse reciprocating motion of the movable blade in the horizontal direction.

Preferably, the chain wheel type speed increasing mechanism and the reversing device are arranged on the same side of the frame.

Preferably, the chain is externally provided with a chain case. The protection chain avoids flying into of garrulous grass bits when rotating, has guaranteed the steady of chain operation, increase of service life.

Preferably, the wheels are arranged at the rear part of the frame, and the front end of the frame is also provided with universal wheels.

Preferably, the containing box is a detachable containing box. The grass clippings are collected and then poured out quickly.

Preferably, the containing box still be equipped with the handle, easy to assemble and dismantlement.

The utility model adopts the manual drive, and drives the wheel and the chain wheel to rotate after pushing the push-pull mechanism by hand. The grass mower adopts a chain wheel acceleration transmission mode, the rotation of the wheel is accelerated and transmitted to the disc through the chain wheel transmission of the chain wheel and the flywheel, the movement is transmitted to the swing part through the swing under the driving of the connecting rod, and the swing part horizontally swings; the cutting device comprises a fixed blade fixed on a frame through a fixed mount, and the fixed blade and a movable blade are combined together through a transverse guide rail; when the cutting device moves, the flexible blade is driven by the crank key to do transverse reciprocating motion relative to the fixed blade, and the cutting action of the cutting device is completed. Because the disc and the reel are coaxially arranged, the reel collects grass scraps simultaneously in the grass cutting process.

And the swing is converted into the horizontal reciprocating motion of the movable blade through the connected turning key.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. The hand-push type grass cutting machine has the advantages of low noise, light weight and convenience in operation, and is suitable for home courtyard lawn trimming or lawn trimming in places with noise requirements like library learning or office occasions.

2. The grass mower has the advantages of simple structural design, wide sources, convenience in structural installation and capability of well reducing the production cost, and the product design material is a multipurpose industrial aluminum alloy profile.

3. The grass mower adopts a transmission mode of gear chain speed change and crank connecting rod innovatively, gear speed change is realized, and the stability of blade shearing motion is ensured.

4. The hand-push type grass mower is driven by manpower, and compared with the traditional gasoline engine and the traditional oil extraction machine, the hand-push type grass mower not only reduces the working noise, but also reduces the emission of environmental pollutants, is low-carbon and environment-friendly, and is very suitable for popularization and use.

5. By adopting a multiple adjusting mode, the lawn mower can trim the lawns with different heights by adjusting the height of the fixing frame to meet the requirements of trimming the lawns with different heights, and can also adapt to the operation of people with different heights by adjusting the height of the push-pull mechanism.

Drawings

Fig. 1 is a schematic top view of the present invention;

Fig. 2 is a schematic bottom view of the present invention.

In the figure, 1 is a movable blade, 2 is a fixed blade, 3 is a universal wheel, 4 is a swing part, 5 is a left fixed frame, 6 is a connecting rod, 7 is an adjusting shaft, 8 is a flywheel, 9 is a disc, 10 is a chain, 11 is a wheel, 12 is a toothed disc, 13 is a reel, 14 is a supporting rod, 15 is a push rod, 16 is a handle, 17 is a T-shaped bolt, 18 is an angle iron, 19 is a middle shaft supporting seat, 20 is a frame, 21 is a row brush, 22 is a containing box, 23 is a brush disc, 24 is an outer spherical bearing seat, 25 is a fixed pin, 26 is a middle shaft, 27 is a front shaft screw, 28 is a swing part fixing part, 29 is a right fixed frame, and 30 is a crank arm.

Detailed Description

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

Example 1

The utility model provides a small-size lawnmower of hand propelled, as shown in fig. 1 ~ 2, includes frame 20, cutting device, chaff collection device and switching-over device, wherein: the frame 20 is provided with wheels 11 and a push-pull mechanism; the cutting device consists of a fixed blade 2 and a movable blade 1 which are matched, and the fixed blade 2 is fixed at the front end of the frame 20; the grass chip collecting device consists of a reel 13 matched with the cutting device and a containing box 22 arranged behind the reel 13, and the reel 13 is rotatably connected with the frame 20 through a rotating shaft and rotates along with the wheels 11; the reversing device is used for converting the rotating motion of the wheel 11 into the transverse reciprocating motion of the movable blade 1.

In this embodiment, the reel 13 is mainly composed of a row brush 21, a brush disk 23, an intermediate shaft 26, a front shaft screw 27 and a reel, and the reel 13 is fixed by an outer ball bearing seat 24 and a fixing pin 25. The reversing device comprises a disc 9, a connecting rod 6, a swing part 4 and a crank arm 30 which are sequentially connected in a transmission manner, the disc 9 is rotatably connected with the frame through an adjusting shaft 7 and coaxial with the reel 13 (namely, the intermediate shaft 26 and the adjusting shaft 7 are on a rotating shaft), the swing part 4 is hinged on the frame 20 and can swing in a horizontal plane under the driving of the connecting rod 6, and the crank arm 30 drives the movable blade 1 to transversely reciprocate. More specifically, the swing member 4 is in the shape of a boomerang, the vertex is hinged to the frame 20, and the two ends are respectively connected to the connecting rod 6 and the crank arm 30, as shown in fig. 1-2. In the embodiment, the rotating shafts of the disc 9 and the reel 13 are in transmission connection with the wheels 11 through a chain wheel type speed increasing mechanism, the chain wheel type speed increasing mechanism is composed of a toothed disc 12 coaxial with the wheels, a flywheel 8 arranged on the rotating shafts and a chain 10 for connecting the toothed disc 12 and the flywheel 8 (preferably adopting a T18 flywheel), and the diameter of the flywheel 8 is smaller than that of the toothed disc 12. On the one hand, the rotating speed is increased, on the other hand, the transmission direction is changed, and the rotation in the vertical direction is converted into the transverse reciprocating motion of the movable blade in the horizontal direction. In this embodiment, the sprocket type speed increasing mechanism and the reversing device are disposed on the same side of the frame 20.

In this embodiment, a height-adjustable fixing frame is disposed on the frame 20, the fixed blade 2 is disposed on the frame 20 through the fixing frame (the fixing frame is composed of a left fixing frame 5 and a right fixing frame 29, and is connected to two ends of the fixed blade 2), the movable blade 1 makes a transverse reciprocating motion relative to the fixed blade 2 through a transverse guide rail disposed on the fixed blade 2, and the swing part 4 is hinged to the fixing frame (5 fixing frames in this embodiment) through a swing part fixing member 28.

In this embodiment, the frame 20 is formed by fixing the aluminum alloy sections by the T-bolts 17 and the angle irons 18, and the push-pull mechanism is formed by the support rods 14 and the push rods 15. The storage box 22 is a detachable storage box, and can be conveniently and quickly taken down after the grass clippings are fully collected. The containing box still is equipped with handle 16, easy to assemble and dismantlement. The chain 10 is externally provided with a chain box. The protection chain 10 avoids flying into of the grass chopping pieces when rotating, ensures the stability of the operation of the chain 10 and prolongs the service life. The wheels 11 are solid rubber wheels with larger diameters, and are arranged at the rear part of the frame 20 through the middle shaft supporting seat 19, so that noise is reduced, rolling is easy to realize, and the movable blades 1 and the reel 13 can be effectively driven to move. The front end of the frame 20 is also provided with universal wheels 3.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. A small-size lawnmower of hand propelled, characterized in that includes:

A frame (20), wherein the frame (20) is provided with wheels (11) and a push-pull mechanism,

The cutting device consists of a fixed blade (2) and a movable blade (1) which are matched, the fixed blade (2) is fixed at the front end of a frame (20),

The grass chip collecting device consists of a reel (13) matched with the cutting device and a containing box (22) arranged behind the reel (13), the reel (13) is rotatably connected with the frame (20) through a rotating shaft and rotates along with the wheels (11),

And the reversing device is used for converting the rotating motion of the wheel (11) into the transverse reciprocating motion of the movable blade (1).

2. A hand-push type small lawnmower according to claim 1, wherein the reversing device comprises a disc (9), a connecting rod (6), a swing member (4) and a crank arm (30) which are sequentially connected in a transmission manner, the disc (9) is coaxial with the reel (13), the swing member (4) is hinged on the frame (20) and can swing in a horizontal plane under the driving of the connecting rod (6), and the crank arm (30) drives the movable blade (1) to transversely reciprocate.

3. A hand propelled lawnmower according to claim 2, wherein the swing member (4) is in the form of a boomerang, hinged at its apex to the frame (20), and connected at each end to the link (6) and the crank (30).

4. A hand-push small lawnmower according to claim 2 or 3, wherein the frame (20) has a height-adjustable mount, the fixed blade (2) is mounted on the frame (20) via the mount, the movable blade (1) is laterally reciprocated relative to the fixed blade (2) via a lateral guide provided on the fixed blade (2), and the swing part (4) is hinged to the mount.

5. A hand-push small lawnmower according to claim 2, wherein the rotating shafts of the circular disc (9) and the reel (13) are drivingly connected to the wheel (11) through a sprocket speed-increasing mechanism, the sprocket speed-increasing mechanism comprises a chain wheel (12) coaxial with the wheel, a flywheel (8) disposed on the rotating shaft, and a chain (10) for connecting the chain wheel (12) and the flywheel (8), and the diameter of the flywheel (8) is smaller than that of the chain wheel (12).

6. A hand propelled lawnmower according to claim 5, wherein the sprocket speed increasing mechanism and the reversing device are disposed on the same side of the frame (20).

7. A hand-push small lawnmower according to claim 1, wherein the wheels (11) are disposed at the rear of the frame (20), and the front end of the frame (20) is further provided with universal wheels (3).