CN212487316U

CN212487316U - Drum-type sod trimmer

Info

Publication number: CN212487316U
Application number: CN202020892799.0U
Authority: CN
Inventors: 潘正均
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-02-09
Anticipated expiration: 2030-05-25

Abstract

The utility model provides a drum-type turf trimmer belongs to garden equipment technical field. It has solved the current poor problem of turf trimmer pruning effect. The roller type turf trimmer comprises a rack, a roller which is arranged on the lower portion of the rack and extends transversely, and a power assembly which is used for driving the roller to rotate around the central axis of the roller, wherein a fixed cutter which is positioned below the roller is arranged on the rack, a cutter which can form shearing action with the fixed cutter is arranged on the outer wall of the roller, and the cutter extends along the tangential direction of the roller. The utility model has the advantages of good grass trimming effect, difficult cutter clamping, compact structure and the like.

Description

Drum-type sod trimmer

Technical Field

The utility model belongs to the technical field of garden equipment, a drum-type turf trimmer is related to.

Background

The turf gradually covers idle areas such as urban roads, residential areas and parks with various advantages such as greening environment and air purification, and in order to keep the turf well in growth, gardeners need to regularly trim the turf by using a turf trimmer. The Chinese patent discloses an electric and manual dual-purpose mower [ with the publication number of CN2867829] in order to improve the trimming efficiency, which comprises a mower body, a motor, a battery, a grass collecting hopper, a hand push handle, tires and a grass trimming knife, wherein the grass trimming knife comprises blades and a roller frame, the blades are distributed on the roller frame, two ends of the roller frame are respectively and rotatably arranged at two sides of the mower body, the roller frame is connected with the motor through a transmission mechanism, and a manual device which can manually enable the grass trimming knife to work when no electric energy exists is also arranged on the mower body.

Although the above-mentioned lawn mower can use a manual device to make the grass trimming blade continue to work when there is no electric power, thereby improving the trimming efficiency, the following problems still exist: the blades extend along the radial direction of the roller frame, namely the cutting direction of the blades is parallel to the growth direction of grass, and the blades trim the turf in an impacting mode during working, so that the requirements on the rotating speed of the roller frame are high, and the trimming effect on the turf is poor; adopt external motor drive, cause the volume of whole lawn mower great, be unfavorable for the transport, the flexibility when pruning the turf is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems in the prior art and providing a roller type turf trimmer with good turf trimming effect.

The purpose of the utility model can be realized by the following technical proposal:

the roller type turf trimmer comprises a rack, a roller arranged on the lower portion of the rack and extending transversely, and a power assembly used for driving the roller to rotate around a central axis of the roller, wherein a fixed cutter positioned below the roller is arranged on the rack, and a cutter capable of forming shearing action with the fixed cutter is arranged on the outer wall of the roller.

In the above roller type turf trimmer, the plurality of cutters are distributed in an annular array along the central axis of the roller, the length direction of the cutters spirally extends along the length direction of the roller, and the width direction of the cutters extends along the tangential direction of the roller.

Because the width direction of cutter extends along the tangential direction of cylinder, the blade of cutter is forward when the cutter moves to the upper portion of cylinder, and when the cutter moved to the lower part of cylinder, the blade of cutter was backward, and the blade of stationary knife is forward. Because the length direction of the cutter spirally extends along the length direction of the roller, the cutter gradually forms shearing action with the fixed cutter, the cutter is not easy to be clamped, and the trimming effect can be effectively improved. The working principle of the roller type turf trimmer is as follows: the power assembly drives the roller to rotate around the central axis of the roller to drive the cutter to do circular motion around the central axis of the roller, the cutter brings weeds positioned in the front of the roller to the fixed cutter, the upper parts of the weeds are cut off by matching with the fixed cutter, and the cut weeds are thrown out from the rear of the roller.

In the above roller type sod trimmer, the frame comprises a top plate, a left side plate fixed at the left end of the top plate and a right side plate fixed at the right end of the top plate, the left end of the roller is connected to the left side plate, the right end of the roller is connected to the right side plate, the left end of the fixed cutter is connected to the left side plate, and the right end of the fixed cutter is connected to the right side plate.

In order to improve the security of this drum-type grass trimmer, be equipped with the front guard plate in the front portion of roof, be equipped with the backplate at the rear portion of roof, the lower of front guard plate is higher than the lower of cylinder, and roof, left side board, right side board and front guard plate link firmly each other, and roof, left side board, right side board and backplate link firmly each other.

In the above roller type sod trimmer, the power assembly comprises a hub motor having an inner stator and an outer rotor, the left end of the inner stator is fixedly connected with the left side plate, the right end of the inner stator is fixedly connected with the right side plate, and the roller is coaxially and fixedly connected to the outer rotor. The hub motor is arranged in the roller, so that the whole trimmer is more compact in structure. Wherein, the roller can be an outer rotor of the hub motor.

In foretell drum-type grass trimmer, the grass trimmer still including locate the connecting seat of frame top and with the pivot that the connecting seat rotates to be connected, the pivot with the vertical central line coaxial setting of cylinder and the lower extreme of pivot link firmly with the frame, connecting seat and frame between be equipped with and be used for driving the frame around the axis pivoted drive assembly of pivot.

During operation, the driving assembly drives the rack to rotate around the central axis of the rotating shaft, so that the roller is driven to rotate around the longitudinal central line of the roller, and trimming efficiency is improved.

In the drum-type turf trimmer, a bearing is arranged between the rack and the connecting seat, the outer ring of the bearing is fixedly connected with the connecting seat, and the rotating shaft is coaxially and fixedly connected with the inner ring of the bearing. The bearing is used for connecting the rotating shaft and the connecting seat, and axial limiting of the rotating shaft is realized when radial limiting of the rotating shaft is carried out.

In the above roller type grass trimmer, the driving assembly comprises a worm wheel fixed on the connecting seat and coaxially arranged with the rotating shaft, a driving motor fixed on the frame and a worm driven by the driving motor, and the worm wheel is meshed with the worm.

The worm is coaxially and fixedly connected with an output shaft of the driving motor, the worm is driven to rotate around the central axis of the worm when the driving motor works, and the worm rotates around the central axis of the rotating shaft while rotating due to the fixation of the worm wheel and the meshing of the worm wheel and the worm, so that the rack is driven to rotate around the central axis of the rotating shaft.

In the above-mentioned roller-type sod trimmer, a grass guard is provided at one side of the frame. The weed blocking plate can limit the range of backward throwing of weeds. Wherein, the upper end of the grass baffle is hinged with the frame, and the grass baffle can be a wood plate, a rubber plate, an iron plate or a brush plate.

Compared with the prior art, the roller type turf trimmer has the following advantages:

the width direction of the cutter extends along the tangential direction of the roller, and the cutter can shear weeds under the action of cooperation with the fixed cutter, so that the weed trimming effect is improved; the length direction of the cutting knife is spirally distributed along the length direction of the roller, so that the cutting knife is not easy to clamp during shearing; the hub motor is arranged in the roller, so that the whole trimmer is more compact in structure.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a side view of the first embodiment of the present invention.

Fig. 3 is a side view of the second embodiment of the present invention.

In the figure, 1, a roller; 2. fixing a cutter; 31. a cutter; 41. a top plate; 42. a left side plate; 43. a right side plate; 44. a front guard plate; 45. a rear guard plate; 5. a connecting seat; 6. a rotating shaft; 7. a bearing; 8. a worm gear; 9. a drive motor; 10. a worm; 11. keep off the grass board.

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.

Example one

As shown in fig. 1 and 2, the roller type sod trimmer comprises a frame, a roller 1 arranged at the lower part of the frame and extending transversely, and a power assembly for driving the roller 1 to rotate around a central axis of the roller, wherein the frame comprises a top plate 41, a left side plate 42 fixed at the left end of the top plate 41, and a right side plate 43 fixed at the right end of the top plate 41, in order to improve the safety of the roller type sod trimmer, a front guard plate 44 is further arranged at the front part of the top plate 41, a rear guard plate 45 is arranged at the rear part of the top plate 41, the lowest part of the front guard plate 44 is higher than the lowest part of the roller 1, the top plate 41, the left side plate 42, the right side plate 43 and the front guard plate 44 are fixedly connected with each other.

As shown in fig. 1, the left end of the drum 1 is connected to the left side plate 42, the right end thereof is connected to the right side plate 43, the frame is provided with a fixed knife 2 positioned below the drum 1, the left end of the fixed knife 2 is connected to the left side plate 42, and the right end thereof is connected to the right side plate 43. As shown in fig. 1, the outer wall of the drum 1 is provided with two cutters 31 distributed in an annular array along the central axis of the drum 1, the length direction of the cutters 31 extends spirally along the length direction of the drum 1, and the width direction of the cutters 31 extends along the tangential direction of the drum 1.

As shown in fig. 2, when the cutter 31 moves to the upper portion of the drum 1, the cutting edge of the cutter 31 faces forward, and when the cutter 31 moves to the lower portion of the drum 1, the cutting edge of the cutter 31 faces rearward, and the cutting edge of the stationary knife 2 faces forward. The working principle of the roller type turf trimmer is as follows: the power assembly drives the roller 1 to rotate around the central axis of the roller 1 to drive the cutter 31 to do circular motion around the central axis of the roller 1, the cutter 31 brings weeds positioned at the front part of the roller 1 to the position of the fixed cutter 2, the upper parts of the weeds are cut off by matching with the fixed cutter 2, and the cut weeds are thrown out from the rear part of the roller 1.

In this embodiment, the power assembly includes a hub motor having an inner stator and an outer rotor, the left end of the inner stator is fixedly connected to the left side plate 42, the right end thereof is fixedly connected to the right side plate 43, and the drum 1 is coaxially and fixedly connected to the outer rotor.

As shown in fig. 1 and 2, the turf trimmer further comprises a connecting seat 5 arranged above the frame and a rotating shaft 6 rotatably connected with the connecting seat 5, the rotating shaft 6 is coaxially arranged with the longitudinal central line of the roller 1, the lower end of the rotating shaft 6 is fixedly connected with the frame, and a driving assembly for driving the frame to rotate around the central axis of the rotating shaft 6 is arranged between the connecting seat 5 and the frame. During operation, drive assembly drives the frame and rotates round the axis of pivot 6 to drive cylinder 1 and rotate round the longitudinal center line of cylinder 1, thereby improve pruning efficiency.

As shown in fig. 2, a bearing 7 is arranged between the frame and the connecting seat 5, an outer ring of the bearing 7 is fixedly connected with the connecting seat 5, and the rotating shaft 6 is coaxially and fixedly connected with an inner ring of the bearing 7. The bearing 7 is used for connecting the rotating shaft 6 and the connecting seat 5, and axial limiting of the rotating shaft 6 is further achieved when radial limiting is carried out on the rotating shaft 6.

As shown in fig. 2, the driving assembly includes a worm wheel 8 fixed on the connecting base 5 and coaxially disposed with the rotating shaft 6, a driving motor 9 fixed on the frame, and a worm 10 driven by the driving motor 9, wherein the worm wheel 8 is engaged with the worm 10. The worm 10 is coaxially and fixedly connected with an output shaft of the driving motor 9, the worm 10 is driven to rotate around the central axis of the worm when the driving motor 9 works, and the worm 10 rotates around the central axis of the rotating shaft 6 while rotating due to the fact that the worm wheel 8 is fixed and the worm wheel 8 is meshed with the worm 10, so that the rack is driven to rotate around the central axis of the rotating shaft 6.

As shown in fig. 2, one side of the frame is provided with a grass guard 11 for limiting the backward throwing range of weeds. Wherein, the upper end of the grass baffle 11 is hinged with the rear guard plate 45, and the grass baffle 11 can be a wood plate, a rubber plate, an iron plate or a brush plate.

Can be connected to the connecting arm of freight train with connecting seat 5 of this drum-type sod trimmer, support the drum-type sod trimmer through the connecting arm, accessible connecting arm sends the drum-type sod trimmer to the assigned position when the freight train walks on the road and in order to accomplish the pruning of sod. When used as a small device, the top plate 41 may be directly fixed to the cart, with the drive motor 9 being inoperative, and the cart pushed by the gardener to move the roller-type sod trimmer to a desired position for operation.

Example two

The structure principle of this embodiment is basically the same as that of the first embodiment, except that, as shown in fig. 3, the outer wall of the drum 1 is provided with three cutters 31 distributed in an annular array along the central axis of the drum 1, the length direction of the cutters 31 extends spirally along the length direction of the drum 1, and the width direction of the cutters 31 extends along the tangential direction of the drum 1.

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. The utility model provides a drum-type turf trimmer, includes the frame, locate frame lower part and transversely extend cylinder (1) and be used for driving cylinder (1) around the pivoted power component of self axis, its characterized in that, the frame on be equipped with stationary knife (2) that are located cylinder (1) below, the outer wall of cylinder (1) is equipped with can form cutter (31) of shearing action with stationary knife (2).

2. A roller-type sod trimmer according to claim 1, wherein said plurality of cutters (31) are arranged in an annular array along the central axis of the roller (1), the length of said cutters (31) extending helically along the length of the roller (1), the width of said cutters (31) extending tangentially of the roller.

3. A roller-type sod trimmer according to claim 1 or 2, wherein said frame comprises a top plate (41), a left side plate (42) fixed to the left end of the top plate (41) and a right side plate (43) fixed to the right end of the top plate (41), said roller (1) having its left end connected to the left side plate (42) and its right end connected to the right side plate (43), said stationary blade (2) having its left end connected to the left side plate (42) and its right end connected to the right side plate (43).

4. A roller-type sod cutter as claimed in claim 3, wherein said power unit comprises a hub motor having an inner stator and an outer rotor, said inner stator being secured at its left end to a left side plate (42) and at its right end to a right side plate (43), said roller (1) being coaxially secured to said outer rotor.

5. The roller type sod trimmer as claimed in claim 1 or 2, further comprising a connecting base (5) disposed above the frame and a rotating shaft (6) rotatably connected to the connecting base (5), wherein the rotating shaft (6) is disposed coaxially with the longitudinal center line of the roller (1) and the lower end of the rotating shaft (6) is fixedly connected to the frame, and a driving assembly for driving the frame to rotate around the central axis of the rotating shaft (6) is disposed between the connecting base (5) and the frame.

6. A roller-type sod trimmer according to claim 5, characterized in that a bearing (7) is provided between the frame and the connecting base (5), the outer ring of the bearing (7) is fixed to the connecting base (5), and the rotating shaft (6) is coaxially fixed to the inner ring of the bearing (7).

7. A roller-type sod trimmer as in claim 5, wherein said drive assembly comprises a worm wheel (8) fixed to said connecting base (5) and coaxially arranged with respect to said axis of rotation (6), a drive motor (9) fixed to said frame, and a worm (10) driven by said drive motor (9), said worm wheel (8) engaging said worm (10).

8. A roller sod trimmer according to claim 1, wherein said frame is provided with a grass guard (11) on one side.