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Bearing housing assembly of grass cutter

A lawn mower and bearing box technology, applied in the direction of bearing elements, rigid supports of bearing components, shafts and bearings, etc., can solve problems such as poor sealing performance, and achieve the effects of improved service life, simple structure, and reasonable design

Inactive Publication Date: 2019-03-12
常熟得美零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a lawnmower bearing box assembly, which can solve the problem of poor sealing performance existing in the existing lawnmower bearings

Method used

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  • Bearing housing assembly of grass cutter

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The invention discloses a lawnmower bearing box assembly, which includes: an outer ring 10 , a connecting shaft 20 and a bearing 30 .

[0022] Wherein, the structure of the outer ring 10 can be conical or flange-shaped according to the requirements of different mowers. Both ends of the inner hole of the outer ring 10 are provided with stepped surfaces.

[0023] There are two bearings 30 , which are respectively installed on the stepped surfaces at both ends of the inner hole of the outer ring 10 . Specifically, the bearing 30 includes a bearing outer ring 31, a bearing inner ring 32, a cage 33, rolling elements 34 and a sealing ring 35; wherein, the bearing outer ring 31 is assembled and fixed on the stepped surface of the outer ring 10 , the bearing inner ring 32 is coaxially fitted in the bearing outer ring 31, the retainer 33 is sleeved on the surface of the bearing inner ring 32, and the rolling elements 34 are fixed on the retainer 33 at equal intervals and in ro...

Embodiment 2

[0028] The difference from Embodiment 1 is that the bearing housing assembly further includes a bushing 40, which is fitted between the two stepped surfaces of the inner hole of the outer ring 10, and its two ends are in contact with the bearing 30. touch. After the blade is impacted during operation, the bearing at one end of the blade will move toward the other bearing. The design of the bushing 40 can control the assembly size of the two bearings, thereby preventing the bearing from moving. In addition, the inner hole of the outer ring 10 is provided with a draft angle, which facilitates the installation and removal of the bushing 40 .

[0029] A lawnmower bearing box assembly of the present invention has the following advantages:

[0030] 1. Through the design of two sets of bearings, it can avoid the jumping of the connecting shaft during the rotation process, so as to ensure the cutting quality of the blade;

[0031] 2. The design of connecting one end of the blade thr...

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PUM

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Abstract

The invention discloses a bearing housing assembly of a grass cutter. The bearing housing assembly comprises an outer ring, a connecting shaft and two bearings, wherein the two bearings are respectively arranged on the step surfaces of the two ends of an inner hole of the outer ring; the connecting shaft penetrates the bearings and the inner hole of the outer ring; one end of the connecting shaftis connected to the grass cutter; the other end of the connecting shaft is connected to a cutter blade; a groove is formed in one end, close to the cutter blade, of the outer ring and is located in the axial direction; one end, connecting to the cutter blade, of the connecting shaft is provided with a cylinder structure; and an extension side is arranged on the periphery of one side, facing the bearings, of the cylinder structure, is located in the axial direction and is matched with the groove, so that the connecting shaft and the outer ring are assembled to form a seal face structure. One end, connecting to the cutter blade, of the connecting shaft and the outer ring are connected through the seal face structure, so that the sealing performance of the bearing housing assembly can be improved effectively, thus, the winding of mud, gravels, ribbons and the like can be avoided, the cutter blade is prevented from contacting with dew or mud on grass-blades in the operational process to erode the bearings, and the service life of the bearing housing assembly is prolonged.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a lawnmower bearing box assembly. Background technique [0002] The bearing box assembly is the core component of the lawn mower, and its working stability directly affects the performance of the lawn mower. The bearing box assembly is suitable for all kinds of mowers, self-propelled mowers and walk-behind mowers. Its high stability design structure is suitable for long-term operation in complex environments. [0003] However, the structural design of the sealing system of the existing bearing box assembly is not ideal, and the sealing performance is poor, which will make the blade contact with the grass during operation, causing dew or mud on the grass to enter the bearing, corrode the bearing, and have a low service life. In addition, a bearing is assembled in the bearing box assembly, and in the working process, the rotary shaft is prone to beating during rotation, which...

Claims

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Application Information

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IPC IPC(8): F16C35/06F16C33/66F16C33/78
CPCF16C35/061F16C33/6607F16C33/7806F16C33/7816F16C33/7886
Inventor 言奕
Owner 常熟得美零部件有限公司