CN211073064U

CN211073064U - Dustproof construction of angle mill

Info

Publication number: CN211073064U
Application number: CN201922196968.7U
Authority: CN
Inventors: 黄建平; 沙凯
Original assignee: Jiangsu Dayi M&e Tools Co ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-24
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a dustproof construction of angle grinder, including the output shaft, the output shaft has fixedly set up shield, first bearing, big bevel gear and second bearing from top to bottom in proper order, the top and the bottom of first bearing set up with shield and big bevel gear interval respectively, the interval sets up between second bearing and the big bevel gear, the upper portion outside the output shaft is fixed and is provided with the bearing frame, the lower part outside the output shaft is fixed and is provided with the gear box, the inside wall of gear box sets up with the outside interval of big bevel gear, the top of gear box is fixedly connected with the bearing frame, fixed set up the gasket between first bearing and the shield, gasket and output shaft interference fit make the environment in the bearing frame of angle grinder isolate completely with the external environment completely, reach best dustproof state, prolonged the life of bearing in the bearing frame, thereby also improving the service life of the machine.

Description

Dustproof construction of angle mill

Technical Field

The utility model relates to an angle mill technical field, in particular to dustproof construction of angle mill.

Background

At present, an angle grinder, also called a grinder or a disc grinder, is a grinding tool for cutting and grinding glass fiber reinforced plastics. The angle grinder is a portable electric tool utilizing glass fiber reinforced plastic to cut and polish, is mainly used for cutting, grinding and brushing metal, stone and the like, works in a severe environment, has a large amount of dust, and once the dust enters a bearing seat, a bearing in the bearing seat can be damaged, so that the service life of the angle grinder is shortened, and therefore, the environment in the bearing seat of the angle grinder is completely isolated from the external environment to achieve the optimal dustproof state.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the embodiment of the utility model provides a dustproof construction of angle mill for it is dustproof to angle mill.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the embodiment of the utility model provides a dustproof structure of an angle grinder, which comprises an output shaft, wherein the output shaft is fixedly provided with a dustproof cover, a first bearing, a large bevel gear and a second bearing from top to bottom in sequence, the top and the bottom of the first bearing are respectively arranged at intervals with the dust cover and the large bevel gear, the second bearing is arranged at intervals with the large bevel gear, the upper part of the outer side of the output shaft is fixedly provided with a bearing seat, the outer side of the bearing seat is jointed with the inner side of the bearing seat, the lower part of the outer side of the output shaft is fixedly provided with a gear box, the inner side wall of the gear box and the outer side of the large bevel gear are arranged at intervals, the top of the gear box is fixedly connected with the bearing seat, the outer side of the second bearing is attached to the inner side of the gear box, a gasket is fixedly arranged between the first bearing and the dust cover, and the gasket is sleeved on the output shaft.

When the machine is powered on, the output shaft is driven to rotate by power through the large bevel gear, the dustproof cover and the output shaft rotate together in an interference fit mode, a labyrinth dustproof channel is formed due to the fact that a gap exists between the dustproof cover and the bearing seat, and in order to further enhance the dustproof effect, a gasket is additionally arranged between the first bearing and the output shaft, so that the first bearing is completely isolated from the external environment, external dust basically does not enter the bearing seat, and the service life of the first bearing is prolonged.

As a preferred embodiment, the dust cover is in interference fit with the output shaft, so that the dust cover and the output shaft synchronously run, and the dust prevention effect is better realized.

As a preferable embodiment, an O-shaped ring is arranged between the inner side of the gear box and the outer side of the bearing seat in a cushioning mode, the tightness of connection between the gear box and the bearing seat is improved through the O-shaped ring, and the situation that dust enters the loose connection position of the gear box and the bearing seat is avoided.

As a preferred embodiment, the inner side of the dust cover is attached to the output shaft, the height of the outer side of the dust cover is smaller than that of the inner side of the dust cover, the inner side and the outer side of the dust cover are arranged at intervals, the inner side of the bearing seat is inserted into a gap between the inner side and the outer side of the dust cover, and the bottom of the inner side of the dust cover and the top of the gasket are arranged at intervals, so that a labyrinth channel is formed, and the dust-proof effect is further enhanced.

In a preferred embodiment, a bearing pressure plate is fixedly arranged at the bottom between the first bearing and the bearing seat, and the inner side of the bearing pressure plate and the outer side of the large bevel gear are arranged at intervals, so that the connection between the bearing and the output shaft is firmer.

In a preferred embodiment, the inner side of the second bearing is fixedly connected with the outer surface of the output shaft, the outer side of the second bearing is in contact with the inner side wall of the gear box, and the tightness of the connection between the second bearing and the output shaft is improved.

In a preferred embodiment, the large bevel gear and the bottom part of the large bevel gear are arranged at intervals from the second bearing, so that the influence on the operation of the large bevel gear is avoided.

Drawings

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

In the figure, 1 — output shaft; 2, a dust cover; 3, a bearing seat; 4, a gasket; 5-a first bearing; 6-cross recessed pan head screw; 7, bearing pressing plate; 8-O-shaped ring; 9-large bevel gear; 10-a gearbox; 11-second bearing.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, belong to the scope of protection of the invention.

As shown in fig. 1, a dustproof structure of an angle grinder comprises an output shaft 1, wherein a dustproof cover 2, a first bearing 5, a large bevel gear 9 and a second bearing 11 are sequentially and fixedly arranged on the output shaft 1 from top to bottom, the top and the bottom of the first bearing 5 are respectively arranged at intervals with the dustproof cover 2 and the large bevel gear 9, the second bearing 11 and the large bevel gear 9 are arranged at intervals, a bearing seat 3 is fixedly arranged at the upper part of the outer side of the output shaft 1, the outer side of the bearing seat 3 is attached to the inner side of the bearing seat 3, a gear box 10 is fixedly arranged at the lower part of the outer side of the output shaft 1, the inner side wall of the gear box 10 is arranged at intervals with the outer side of the large bevel gear 9, the top of the gear box 10 is fixedly connected with the bearing seat 3, the outer side of the second bearing 11 is attached to the inner side of the gear box 10, a gasket, the gasket 4 is sleeved on the output shaft 1.

When the machine is powered on, the power drives the output shaft 1 to rotate through the large bevel gear 9, the dustproof cover 2 rotates together with the output shaft 1 in an interference fit mode, a labyrinth dustproof channel is formed due to the fact that a gap exists between the dustproof cover 2 and the bearing seat 3, and in order to further enhance the dustproof effect, a gasket 4 is additionally arranged between the first bearing 5 and the output shaft 1, so that the first bearing 5 is completely isolated from the external environment, external dust basically does not enter the bearing seat 3, and the service life of the first bearing 5 is prolonged.

Shield

2 and 1 interference fit of output shaft for synchronous operation, better realization dustproof effect between shield 2 and the output shaft 1. An O-shaped ring 8 is arranged between the inner side of the gear box 10 and the outer side of the bearing seat 3 in a cushioning mode, the fastening performance of connection between the gear box 10 and the bearing seat 3 is improved through the O-shaped ring 8, and the situation that dust enters the loose connection position of the gear box 10 and the bearing seat 3 is avoided. The inboard laminating of shield 2 is on output shaft 1, the outside height of shield 2 is less than inboard height, the interval sets up between 2 inboards of shield and the outside, insert in the clearance between 2 inside and outside of shield in the inboard of bearing frame 3, the interval sets up between the bottom of 2 inboards of shield and the top of gasket 4, has formed a labyrinth passageway, further strengthens dirt-proof effect.

The bearing pressing plate 6 is fixedly arranged at the bottom between the first bearing 5 and the bearing seat 3, and the inner side of the bearing pressing plate 6 and the outer side of the large bevel gear 9 are arranged at intervals, so that the bearing and the output shaft 1 are connected more firmly. The inner side of the second bearing 11 is fixedly connected with the outer surface of the output shaft 1, the outer side of the second bearing 11 is in contact with the inner side wall of the gear box 10, and the tightness of connection between the second bearing 11 and the output shaft 1 is improved. The bottom of the large bevel gear 9 and the second bearing 11 are arranged at intervals, so that influence on the operation of the large bevel gear 9 is avoided.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "secured," etc. are to be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection. The two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through a communication path between the two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art as appropriate.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. The utility model provides a dustproof construction of angle mill, a serial communication port, includes the output shaft, output shaft from the top down is fixed shield, first bearing, big bevel gear and second bearing of having set gradually, the top and the bottom of first bearing set up with shield and big bevel gear interval respectively, the interval sets up between second bearing and the big bevel gear, the fixed bearing frame that is provided with in upper portion in the output shaft outside, the outside of bearing frame is laminated with the inboard of bearing frame mutually, the fixed gear box that is provided with in lower part in the output shaft outside, the inside wall of gear box and the outside interval of big bevel gear set up, fixed connection between the top of gear box and the bearing frame, the outside of second bearing is laminated with the inboard of gear box mutually, be provided with the gasket between first bearing and the shield, gasket and output shaft interference fit.

2. The dust-proof structure of an angle grinder as claimed in claim 1, wherein the dust-proof cover is in interference fit with the output shaft.

3. The dust-proof structure of an angle grinder as claimed in claim 1, wherein an O-ring is provided between the inside of the gear housing and the outside of the bearing housing.

4. The dust-proof structure of an angle grinder as claimed in claim 1, wherein the inner side of the dust-proof cover is attached to the output shaft, the height of the outer side of the dust-proof cover is smaller than that of the inner side, and the inner side and the outer side of the dust-proof cover are spaced apart from each other.

5. The dust-proof structure of an angle grinder as set forth in claim 1, wherein the inner side of the bearing housing is inserted into a gap between the inner and outer sides of the dust cap.

6. The dust-proof structure of an angle grinder as set forth in claim 5, wherein the bottom of the inner side of the dust-proof cover is spaced apart from the top of the gasket.

7. The dust-proof structure of an angle grinder as claimed in claim 5, wherein a bearing pressure plate is fixedly arranged at the bottom between the first bearing and the bearing seat, and the inner side of the bearing pressure plate is spaced from the outer side of the large bevel gear.

8. The dust-proof structure of an angle grinder as claimed in claim 1, wherein the inner side of the second bearing is fixedly connected with the outer surface of the output shaft, and the outer side of the second bearing is in contact with the inner side wall of the gear box.

9. The dust-proof structure of an angle grinder as claimed in claim 1, wherein the large bevel gear is spaced from the bottom of the large bevel gear and the second bearing.