CN211793026U

CN211793026U - Grass cutter

Info

Publication number: CN211793026U
Application number: CN201922233446.XU
Authority: CN
Inventors: 翁志煌; 孙旭亮; 顾国平
Original assignee: Changzhou Cloveragri Machinery Co ltd
Current assignee: Changzhou Cloveragri Machinery Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-10-30
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a mower, including motor, blade holder and blade, the one end of blade holder is equipped with connecting portion, and this connecting portion are connected with the output of motor, and the blade is fixed with the blade holder, still includes safety cover and first rotation support subassembly, the other end of blade holder is equipped with the primary shaft, and the safety cover is including the cover body and set up in the axle sleeve of cover body one end, first rotation support subassembly cover is fixed at the primary shaft and with the primary shaft, and the axle sleeve cover is on rotation support subassembly's outer peripheral face. The utility model has the advantages of protecting the knife holder and the blade.

Description

Grass cutter

Technical Field

The utility model relates to an agricultural mechanism technical field, concretely relates to lawn mower.

Background

The mower is a mechanical tool for trimming lawn and consists of a cutter head, a motor, a blade and other structures. The general mower has the structure that a cutter head is arranged on a travelling wheel, a motor is arranged on the cutter head, a blade is arranged on an output shaft of the motor, the speed of the blade is greatly improved by utilizing the high-speed rotation of the motor, the operation time of weeding workers is saved, and a large amount of manpower resources are reduced. However, one problem common to lawn mowers is: after working for a period of time, the blades of the mower are very easy to clamp to grass or mud, especially nuts used for locking the blades, which directly causes the working efficiency of the mower to be reduced; if too much grass or mud is clamped, the blade can be clamped and cannot be thrown out; meanwhile, cleaning the grass or mud is a very troublesome task.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mower capable of protecting a cutter holder and a blade.

The technical scheme for solving the technical problems is as follows:

lawn mower, including motor, blade holder and blade, the one end of blade holder is equipped with connecting portion, and this connecting portion are connected with the output of motor, and the blade is fixed with the blade holder, still includes safety cover and first rotation support subassembly, the other end of blade holder is equipped with the primary shaft, and the safety cover includes the cover body and sets up in the axle sleeve of cover body one end, first rotation support subassembly cover is epaxial and fixed with the primary shaft, and the axle sleeve cover is on rotation support subassembly's outer peripheral face.

The utility model has the advantages that: when mowing, the cover body is pressed on the ground under the action of gravity, and when the cover body touches obstacles such as stone stumps and the like, the cover body skips the obstacles. The cover body is assembled with the first shaft through the supporting component, so that the cover body can independently rotate to protect the cutter holder and the cutter blade.

Drawings

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

reference numbers in the drawings:

1 is a motor, and the output ends 1a and 2 are tool holders; 20, a connecting part, 21 is a first shaft, and 3 is a blade; 4 is a protective cover, 40 is a cover body, 41 is a shaft sleeve, 5 is a first rotary supporting component, 6 is a retainer ring, 7 is a step, 8 is a motor support, 9 is a cutter head cover, 10 is an axial limiting component, and 11 is a second rotary supporting component.

Detailed Description

As shown in fig. 1, the utility model discloses a mower, including motor 1, blade holder 2, blade 3, safety cover 4 and first rotation support assembly 5, the one end of blade holder 2 is equipped with connecting portion 20, and this connecting portion 20 is connected with motor 1's output 1a, and preferably, the tip of connecting portion 20 is equipped with the shaft hole, and motor 1's output 1a stretches into in the shaft hole on connecting portion 20 to adopt the key to make output 1a and shaft hole form the cooperation. The blade 3 is fixed with the cutter holder 2, and when the motor 1 works, the output end 1a rotates to drive the blade 3 to rotate, and the blade mows.

As shown in fig. 1, the other end of the tool holder 2 is provided with a first shaft 21, the protective cover 4 includes a cover 40 and a shaft sleeve 41 disposed at one end of the cover 40, the first rotary support assembly 5 is sleeved on the first shaft 21 and fixed with the first shaft 21, and the shaft sleeve 41 is sleeved on the outer peripheral surface of the rotary support assembly 5. Preferably, the end surface of the other end of the cover 40 is spherical. When mowing, the cover body 40 is pressed on the ground under the action of gravity, and when the cover body 40 is contacted with obstacles such as stone stumps and the like, the cover body 40 jumps over the obstacles. The cover 40 is assembled with the first shaft 21 by the support member 5, so that the cover 40 can rotate independently to protect the holder 2 and the blade 3.

As shown in fig. 1, preferably, the first rotary support assembly 5 comprises a bearing, an inner race of which is fitted over the first shaft 21 and fixed with the first shaft 21, and a sleeve 41 fitted over and engaged with an outer race of the bearing, so that the sleeve 41 functions like a bearing housing.

As shown in fig. 1, the mower further includes a limiting member disposed on an inner wall surface of the sleeve 41, and the rotary support assembly 5 is axially limited by the limiting member 6. The rotation support assembly 5 obtains axial position limitation, and simultaneously, the shaft sleeve 41 obtains axial supporting acting force of the rotation support assembly 5 through the position limitation part, so that the structure not only obtains support of the protective cover 4, but also enables the protective cover 4 to rotate.

As shown in fig. 1, the limiting component includes a retaining ring 6, an annular groove is formed on the inner wall of the shaft sleeve 41, and the retaining ring 6 is installed in the annular groove. In this embodiment, two annular grooves may be provided on the inner wall of the shaft sleeve 41, and the retainer rings 6 are installed in both of the two annular grooves, so as to axially limit the rotation support assemblies 5, respectively. Preferably, however, an annular groove is provided on the inner wall of the sleeve 41, which provides an axial stop for one end of the rotation support assembly 5 by means of the retaining ring 6. For the axial limit of the other end of the rotary support assembly 5, the following structure is adopted:

as shown in fig. 1, the limiting component further includes a step 7 disposed on the inner wall of the shaft sleeve, one end of the rotary support assembly 5 is axially limited by a retainer ring 6, and the other end of the rotary support assembly 5 is limited by the step 7. The step 7 is preferably of a construction which is integrally formed with the sleeve 41.

As shown in fig. 1, the mower further includes a motor support 8, a cutter cover 9, and an axial limiting component 10, wherein a sleeve 80 is disposed on the motor support 8, the cutter cover 9 is sleeved on the sleeve 80, and the axial limiting component 10 is connected with the sleeve 80 to support the cutter cover 9 between the motor support 8 and the axial limiting component 10. The motor further comprises a second rotary supporting component 11, the output end 1a of the motor 1 extends into the sleeve 80, and the second rotary supporting component 11 is respectively matched with the connecting part 20 and the sleeve 80.

As shown in fig. 1, the motor support 8 supports the motor 1 and the cutter head cover 9 by combining the motor support 8 and the cutter head cover 9, and the cutter head cover 9 generates a blocking acting force on the harvested grass to prevent the grass from splashing around along with the rotation of the blades.

Claims

1. Lawn mower, including motor, blade holder and blade, the one end of blade holder is equipped with connecting portion, and this connecting portion are connected with the output of motor, and the blade is fixed with the blade holder, and its characterized in that still includes safety cover and first rotation support subassembly, the other end of blade holder is equipped with the primary shaft, and the safety cover is including the cover body and set up in the axle sleeve of cover body one end, first rotation support subassembly cover is epaxial and fixed with the primary shaft, and the axle sleeve cover is on rotation support subassembly's outer peripheral face.

2. The mower of claim 1, wherein the end surface of the other end of the housing is spherical.

3. The mower of claim 1 wherein the first rotary support assembly comprises a bearing having an inner race that fits over and is fixed to the first shaft and a sleeve that fits over and engages an outer race of the bearing.

4. The mower of any one of claims 1 to 3, further comprising a stop member disposed on an inner wall surface of the sleeve, wherein the rotary support assembly is axially stopped by the stop member.

5. The mower of claim 4, wherein the limiting member comprises a retaining ring, an annular groove is formed on the inner wall of the sleeve, and the retaining ring is mounted in the annular groove.

6. The mower of claim 5, wherein the limiting member further comprises a step provided on the inner wall of the sleeve, one end of the rotary support assembly is axially limited by the retainer ring, and the other end of the rotary support assembly is limited by the step.

7. The mower of any one of claims 1 to 3, further comprising a motor support, a cutter head cover, and an axial stop member, wherein the motor support is provided with a sleeve, the cutter head cover is sleeved on the sleeve, and the axial stop member is connected with the sleeve to support the cutter head cover between the motor support and the axial stop member.

8. A lawnmower according to claim 7, further comprising a second rotary support assembly, the output of the motor extending into the sleeve, the second rotary support assembly being engaged with the connecting portion and the sleeve respectively.