CN202914742U - Axial-movement-prevention structure dust-prevention cushion - Google Patents
Axial-movement-prevention structure dust-prevention cushion Download PDFInfo
- Publication number
- CN202914742U CN202914742U CN 201220638949 CN201220638949U CN202914742U CN 202914742 U CN202914742 U CN 202914742U CN 201220638949 CN201220638949 CN 201220638949 CN 201220638949 U CN201220638949 U CN 201220638949U CN 202914742 U CN202914742 U CN 202914742U
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- CN
- China
- Prior art keywords
- axial
- prevention
- structure dust
- movement
- dust
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an axial-movement-prevention structure dust-prevention cushion which comprises a body which is in a circular shape, the outer surface of the body is provided with an annular protruded edge which is concentric with the body, and the inners surface of the body is provided with at least one square groove. The square grooves are two in number and are arranged in a concentric mode, the height of the annular protruded edge is at least one third of the thickness of the body, the diameter of the annular protruded edge is larger than two thirds of the diameter of the body, and the width of each square groove is at least 5 mm. According to the axial-movement-prevention structure dust-prevention cushion, the annular protruded edge on the outer surface can play a role of outer seal, the square grooves in the inner surface can be connected with corresponding structures in a matched mode, and the effect of axial movement prevention is achieved.
Description
Technical field
The utility model relates to a kind of axial anti-shifting structure dust-proof cushion, is applied on the main shaft of tunnel excavator.
Background technique
The working environment of tunnel excavator is complicated, so often can enter dust or particle in the main shaft of tunnel excavator, causes easily spindle abrasion serious.Dust-proof cushion commonly used is a simple pad, adopts the flexible material manufacturing, and gasket construction itself produces the play of axis easily, particularly makes pad loosening along with the rotation of main shaft.
The model utility content
In order to prevent that dust and particle from entering in the main shaft of tunnel excavator, the utility model provides a kind of axial anti-shifting structure dust-proof cushion.
The purpose of this utility model is come specific implementation by the following technical programs:
Axially the anti-shifting structure dust-proof cushion comprises body, and described body is ring, is provided with and this body concentric annular ridge at the outer surface of body, is provided with at least one square indentations at the internal surface of body.
Described square indentations is provided with two, and two described square indentations arrange with one heart.
The height of described annular ridge is at least 1/3rd of body thickness.
The diameter of described annular ridge is greater than 2/3rds of the body diameter.
The width of described square indentations is at least 5mm.
Axial anti-shifting structure dust-proof cushion through above-mentioned design can play the external sealed effect by the annular ridge on the outer surface, can be connected with corresponding structure by the square indentations on the internal surface, realizes preventing the effect of axial float.
Description of drawings
The below is described in further detail the utility model with embodiment with reference to the accompanying drawings.
Fig. 1 is the structural drawing of the described axial anti-shifting structure dust-proof cushion of the utility model embodiment.
Embodiment
As shown in Figure 1, the described axial anti-shifting structure dust-proof cushion of the utility model embodiment comprises body 1, and described body 1 is ring, be provided with the annular ridge 2 concentric with body 1 at the outer surface of body 1, be provided with two square indentations 3,4 at the internal surface of body 1.
Described square indentations is provided with two, and two described square indentations 3,4 arrange with one heart.
The height of described annular ridge 2 is at least 1/3rd of body thickness.
The diameter of described annular ridge 2 is greater than 2/3rds of the body diameter.
The width of described square indentations is at least 5mm.
Axial anti-shifting structure dust-proof cushion through above-mentioned design can play the external sealed effect by the annular ridge on the outer surface, can be connected with corresponding structure by the square indentations on the internal surface, realizes preventing the effect of axial float.
Claims (5)
1. axial anti-shifting structure dust-proof cushion comprises body, and described body is ring, is provided with and this body concentric annular ridge at the outer surface of body, is provided with at least one square indentations at the internal surface of body.
2. axial anti-shifting structure dust-proof cushion as claimed in claim 1 is characterized in that described square indentations is provided with two, and two described square indentations arrange with one heart.
3. axial anti-shifting structure dust-proof cushion as claimed in claim 1 is characterized in that the height of described annular ridge is at least 1/3rd of body thickness.
4. axial anti-shifting structure dust-proof cushion as claimed in claim 1 is characterized in that the diameter of described annular ridge is greater than 2/3rds of the body diameter.
5. axial anti-shifting structure dust-proof cushion as claimed in claim 1 is characterized in that the width of described square indentations is at least 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638949 CN202914742U (en) | 2012-11-28 | 2012-11-28 | Axial-movement-prevention structure dust-prevention cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220638949 CN202914742U (en) | 2012-11-28 | 2012-11-28 | Axial-movement-prevention structure dust-prevention cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914742U true CN202914742U (en) | 2013-05-01 |
Family
ID=48163059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220638949 Expired - Fee Related CN202914742U (en) | 2012-11-28 | 2012-11-28 | Axial-movement-prevention structure dust-prevention cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914742U (en) |
-
2012
- 2012-11-28 CN CN 201220638949 patent/CN202914742U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20131128 |