CN213880933U - Adjustable head of beating grass - Google Patents

Abstract

The utility model relates to an adjustable grass cutting machine head, which belongs to the field of garden tools, the adjustable grass cutting machine head is added with a rotatable clamping piece and a flower-shaped sleeve on the basis of the prior structure, a round hole is arranged on the clamping piece, a raised cylinder on a rotary cutter seat passes through the round hole on the clamping piece and a cutter pressing plate, so that the clamping piece rotates around a point on the rotary cutter seat, a raised cylinder is also arranged on the clamping piece, the round hole on the cutter passes through the cylinder on the clamping piece and the cylinder on the rotary cutter seat, thereby realizing that the rotation of the clamping piece drives the rotation of the cutter, the outline of all the clamping pieces is contacted with the outline of the flower-shaped sleeve, thereby the rotation of the flower-shaped sleeve pushes all the clamping pieces to realize synchronous rotation, an arc-shaped groove is arranged on the cutter pressing plate, a small cylinder on the clamping piece is just arranged in the arc-shaped groove on the pressing plate after passing through the cutter, the rotation of the clamping piece is convenient, the cutting angle of the clamping piece is changed, the cutting range of the cutter can be adjusted.

Description

Adjustable head of beating grass

Technical Field

The utility model relates to an adjustable aircraft nose of beating grass belongs to the garden instrument field.

Background

The grass trimmer head is an execution component of the grass trimmer and is arranged on a power arm of the grass trimmer, and a transmission shaft in the power arm is connected with a rotating shaft in the grass trimmer head to realize power transmission.

The cutter mounting position in the existing grass mowing machine head is fixed, the position can not be changed after the cutter is mounted, the rotary cutting radius of the grass mowing machine head is fixed after the size and the dimension of the cutter are determined, and the crop is easily damaged due to improper rotary cutting diameter among crops with small working space, so that the grass mowing cutter has to be replaced, and the cutter blade in the whole grass mowing cutter head needs to be detached when the cutter is replaced, so that the time consumption is long and the operation is more troublesome; under some complex working environments, the cutter collides with ground stones or small branches to easily cause the vibration of the grass trimmer head, and when the collision force is large, the risk of damaging the cutter exists.

Therefore, the grass trimmer head capable of adjusting the rotary cutting radius and the mounting angle of the cutter is beneficial to improving the efficiency of cutter adjustment, and can also play a role in protecting the grass trimmer and the cutter.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an adjustable aircraft nose of beating grass to above-mentioned problem, provides a rotatory cutting diameter at the adjustable aircraft nose of beating grass of certain extent, can change the corner of cut of cutter simultaneously, under the complicated condition of operational environment, reduces the frontal collision of cutter and ground stone or branch, reduces the risk of cutter damage.

Adjustable aircraft nose of beating grass, its the extension of rotatory blade holder have the arch, just reach rotatory limit when the clamping piece is outside rotatory protruding with the outer fringe of rotatory blade holder, with the clamping piece restriction between cutter clamp plate and rotatory blade holder, be convenient for compress tightly clamping piece and cutter.

Adjustable head of beating grass, its the outline of clamping piece and the telescopic outline of flower type contact each other, the clamping piece becomes the circumference and distributes, even installation is on rotatory blade holder, separates through the telescopic outline of flower type between the clamping piece.

Adjustable aircraft nose of beating grass, its the spline connection axle of flower type sleeve mounted position department's diameter be less than the telescopic internal diameter of flower type, it is rotatory to be convenient for the flower type sleeve, the telescopic rotatory contact position who changes flower type sleeve outline and clamping piece of flower type, contact position's change promotes the clamping piece rotatory around bellied cylinder on the rotatory blade holder, the change of clamping piece position makes the installation direction of cutter change, because the cutter is installed and is circular motion on rotatory blade holder, make the effective working length of cutter projection to on the radius of rotation change after the cutter installation direction changes, the rotatory working radius that makes the tool bit of beating grass is adjustable.

Adjustable aircraft nose of beating grass, its the mounted position of cutter change the installation angle who makes the cutter adjustable, the angle between the direction of cutter installation and the radius direction of rotatory cutting can realize through the rotation of flower type sleeve promotion clamping piece rotation.

The utility model discloses an adjustable grass trimmer head, its the cutter clamp plate have an arc recess with the one side that the cutter contacted, the protruding cylinder on the clamping piece is arranged in the arc recess of cutter clamp plate after passing through the mounting hole of cutter, when the flower type sleeve promotes the clamping piece to rotate, the protruding cylinder on the clamping piece moves in the arc recess of cutter clamp plate; the inner diameter of the central circular hole of the cutter pressing plate is larger than the outer diameter of the straight cylinder part of the flower-shaped sleeve, so that the straight cylinder part of the flower-shaped sleeve can conveniently penetrate out.

Description of the drawings:

FIG. 1 is a schematic view of the installation of the adjustable grass cutter of the present invention;

FIG. 2 is a schematic structural view of a flower-shaped sleeve of the present invention;

fig. 3 is a schematic structural view of the middle clip of the present invention;

FIG. 4 is a schematic structural view of a pressing plate of the cutting tool of the present invention;

FIG. 5 is a schematic structural view of a rotary knife holder according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-tool bit shell, 2-protective shell, 3-rotary tool apron, 4-flower-shaped sleeve, 5-clamping piece, 6-spline threaded shaft, 7-nut, 8-pressing end cover, 9-tool pressing plate and 10-tool.

The specific implementation mode is as follows:

referring to the attached drawings 1-5, an adjustable grass cutting head comprises a head shell 1, a protective shell 2, a rotary tool apron 3, a flower-shaped sleeve 4, a clamping piece 5, a spline threaded shaft 6, a nut 7, a pressing end cover 8, a tool pressing plate 9 and a tool 10; the grass cutter comprises a cutter head shell 1, a protective shell 2, a spline threaded shaft 6, a spline hole, a spline sleeve 4, a clamping piece 5, a rotary cutter holder 3, a circular hole, a cutter 10 and a protective shell, wherein the cutter head shell 1 is connected with an external grass trimmer, the protective shell 2 is fixed on the cutter head shell 1 through bolts, the spline threaded shaft 6 is arranged in the cutter head shell 1, the spline threaded shaft 6 penetrates through the spline hole in the center of the rotary cutter holder 3, a spline on the spline threaded shaft 6 is matched with the spline hole in the rotary cutter holder 3, the spline sleeve 4 is arranged on the spline threaded shaft 6 and can freely rotate, a raised cylinder on the rotary cutter holder 3 penetrates through a circular hole in the clamping piece 5 and then penetrates through a mounting hole in the cutter 10, and a second mounting hole of the cutter 10 is arranged on a raised cylinder of the clamping piece 5; the appearance profile of flower type sleeve 4 contact with the appearance profile of each clamping piece 5, cutter clamp plate 9 passes spline threaded shaft 6 and contacts with cutter 10, the through-hole on cutter clamp plate 9 cooperatees with bellied cylinder on the rotatory blade holder 3, compress tightly end cover 8 cover on spline threaded shaft 6 and with cutter clamp plate 9 contact, nut 7 passes through threaded connection with spline threaded shaft 6 outer end.

A use method of a bamboo root digging arm comprises the following specific implementation steps:

the grass cutting head is arranged on a power arm of a grass cutting machine through a head shell 1, a transmission shaft in the power arm is connected with a rotating shaft in a grass cutting head to drive a spline threaded shaft 6 to rotate, a rotary cutter holder 3 is connected with the spline threaded shaft 6 through a spline, so that the spline threaded shaft 6 drives the rotary cutter holder 3 to rotate, a raised cylinder on the rotary cutter holder 3 penetrates through a clamping piece 5 and a cutter 10 and is arranged in a round hole on a cutter pressing plate 9, a raised cylinder on the clamping piece 5 penetrates through the cutter 10 and is arranged in an arc-shaped groove on one surface of the cutter pressing plate 9, the raised cylinder on the clamping piece 5 and the raised cylinder on the rotary cutter holder 3 respectively penetrate through two mounting holes of the cutter 10, and connection of two connection points on the cutter 10 is realized; nut 7 passes through threaded connection with 6 outer ends of spline threaded shaft, will compress tightly the firm pressure of end cover 8 on cutter clamp plate 9 through screwing nut 7 to cutter clamp plate 9 is firm presses on cutter 10, prevents that cutter 10 is not hard up in the course of the work, realizes the complete fixation of cutter 10, drives cutter 10 by rotatory blade holder 3 and rotates.

When the installation angle of the cutter 10 is adjusted, the nut 7 needs to be unscrewed, the compression end cover 8 is taken down, the cutter 10 and the cutter pressing plate 9 are in a movable state, then the straight cylinder part of the flower-shaped sleeve 4 penetrating out of the central hole of the cutter pressing plate 9 is rotated, and the flower-shaped sleeve 4 pushes the clamping piece 5 to rotate, so that the installation angle of the cutter 10 is adjustable.

Claims (4)

1. An adjustable head of beating grass, its characterized in that: comprises a tool bit shell (1), a protective shell (2), a rotary tool apron (3), a flower-shaped sleeve (4), a clamping piece (5), a spline threaded shaft (6), a nut (7), a pressing end cover (8), a tool pressing plate (9) and a tool (10); the grass trimmer is characterized in that a cutter head shell (1) is connected with an external grass trimmer, a protective shell (2) is fixed on the cutter head shell (1) through bolts, a spline threaded shaft (6) is arranged inside the cutter head shell (1), the spline threaded shaft (6) penetrates through a spline hole in the center of a rotary cutter holder (3), a spline on the spline threaded shaft (6) is matched with the spline hole in the rotary cutter holder (3), a flower-shaped sleeve (4) is arranged on the spline threaded shaft (6) and can rotate freely, a raised cylinder on the rotary cutter holder (3) penetrates through a round hole in a clamping piece (5) and then penetrates through a mounting hole in a cutter (10), and a second mounting hole in the cutter (10) is arranged on a raised cylinder of the clamping piece (5); the appearance profile of flower type sleeve (4) and the appearance profile of each clamping piece (5) contact, cutter clamp plate (9) pass spline threaded shaft (6) and contact with cutter (10), the through-hole on cutter clamp plate (9) cooperatees with bellied cylinder on rotatory blade holder (3), compress tightly end cover (8) cover on spline threaded shaft (6) and contact with cutter clamp plate (9), nut (7) pass through threaded connection with spline threaded shaft (6) outer end.

2. An adjustable trimmer head according to claim 1 and further comprising: the outer edge of a rotary cutter holder (3) in the adjustable grass trimmer head is provided with a bulge.

3. An adjustable trimmer head according to claim 1 and further comprising: the outline of a pattern sleeve (4) in the adjustable grass mowing head is contacted with the outline of each clamping piece (5).

4. An adjustable trimmer head according to claim 1 and further comprising: the side of the cutter pressing plate (9) in the adjustable grass mowing machine head, which is contacted with the cutter (10), is provided with an arc-shaped groove.

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