CN204358103U - Development machine lips U-shaped pull bar seals - Google Patents
Development machine lips U-shaped pull bar seals Download PDFInfo
- Publication number
- CN204358103U CN204358103U CN201420736143.4U CN201420736143U CN204358103U CN 204358103 U CN204358103 U CN 204358103U CN 201420736143 U CN201420736143 U CN 201420736143U CN 204358103 U CN204358103 U CN 204358103U
- Authority
- CN
- China
- Prior art keywords
- pull bar
- lips
- development machine
- annular seal
- seal body
- Prior art date
- 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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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of development machine lips U-shaped pull bar envelope with good wear resistance and heat-resisting quantity, relate to pull bar envelope field, comprise: an annular seal body, described annular seal body one sidewall surfaces has a groove, described annular seal body between another opposing sidewalls and madial wall, there is a right-angle recess, an anti-extrusion support ring Matching installation is in described right-angle recess.The problem that the utility model development machine lips U-shaped pull bar envelope solves in prior art and adopts that this special envelope compact dimensions is unstable, easily distortion, sealing effect are unstable, easily deviate from, makes the effect of the larger sealing of applied pressure better by arranging tool reeded annular seal body.
Description
Technical field
The utility model relates to a kind of pull bar envelope, particularly relates to a kind of development machine lips U-shaped pull bar envelope with good wear resistance and heat-resisting quantity.
Background technique
Development machine is the machine for digging straight underground passage.Development machine is divided into open type development machine and shield formula development machine.
Development machine telescopic cylinder, reciprocating frequency is high, requires that sealing can be born high frequency and operate the high temperature brought, high frictional force, so sealing necessarily requires to have good wear resistance and high temperature resistant, while can ensure favorable sealing property.Fig. 1 is the structural representation of development machine pull bar envelope traditional in prior art, refer to Fig. 1, this special envelope is used as traditional development machine pull bar front cover, it is made up of rubber and polytetrafluoroethylmaterial material, product is molding, and compact dimensions is unstable, and polytetrafluoroethylmaterial material is easily out of shape, sealing effect is unstable, and using process teflon seal ring is easily deviate from.
Model utility content
The utility model relates to a kind of development machine lips U-shaped pull bar and seals, the problem of adopt this special envelope compact dimensions instability in order to solve in prior art, be easily out of shape, sealing effect is unstable, easily deviating from.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
A kind of development machine lips U-shaped pull bar envelope, wherein, comprise: an annular seal body, described annular seal body one sidewall surfaces has a groove, described annular seal body between another opposing sidewalls and madial wall, there is a right-angle recess, an anti-extrusion support ring Matching installation is in described right-angle recess.
Development machine lips U-shaped pull bar envelope as above, wherein, the described groove both sides of described annular seal body are respectively anterior lip and posterior lip, and described posterior lip is near the madial wall of described annular seal body, and described anterior lip is near the outer side wall of described annular seal body.
Development machine lips U-shaped pull bar envelope as above, wherein, described groove is a U-shaped groove.
Development machine lips U-shaped pull bar envelope as above, wherein, described groove is a v-depression.
Development machine lips U-shaped pull bar envelope as above, wherein, the angle between the two side of described v-depression is 90 degree.
Development machine lips U-shaped pull bar envelope as above, wherein, described annular seal body adopts high performance polyurethane.
Development machine lips U-shaped pull bar envelope as above, wherein, described support ring adopts polyoxymethylene.
In sum, owing to have employed technique scheme, the problem that the utility model development machine lips U-shaped pull bar envelope solves in prior art and adopts that this special envelope compact dimensions is unstable, easily distortion, sealing effect are unstable, easily deviate from, makes the effect of the larger sealing of applied pressure better by arranging tool reeded annular seal body.
Accompanying drawing explanation
Fig. 1 is the structural representation of development machine pull bar envelope traditional in prior art;
Fig. 2 is the structural representation of the utility model development machine lips U-shaped pull bar envelope.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 2 is the structural representation of the utility model development machine lips U-shaped pull bar envelope, refer to Fig. 2, a kind of development machine lips U-shaped pull bar envelope, wherein, comprise: an annular seal body 1, annular seal body 1 one sidewall surfaces have a groove 5, annular seal body 1 between another opposing sidewalls and madial wall, there is a right-angle recess, one anti-extrusion support ring 2 Matching installation is in right-angle recess, and the utility model is used for the rod seal in development machine guide sleeve in narrow groove.
The groove both sides of annular seal body 1 of the present utility model are respectively anterior lip 3 and posterior lip 4, and posterior lip 4 is near the madial wall of annular seal body 1, and anterior lip 3 is near the outer side wall of annular seal body 1.
Groove 5 of the present utility model can be a U-shaped groove.
Groove 5 of the present utility model also can be a v-depression.
Further, the angle between the two side of v-depression of the present utility model is 90 degree.
Annular seal body 1 of the present utility model adopts high performance polyurethane, polyurethane material has higher mechanical strength and tear strength, excellent damping, buffering performance, high temperature resistant, hydrolysis resistance, wear-resisting, its antiwear property can improve 2 ~ 10 times more than than rubber, especially in the wet friction process having water, wet goods liquid medium to exist, the antiwear property of polyurethane is greatly better than other materials, thus can effectively increase working life of the present utility model.
Support ring 2 of the present utility model adopts polyoxymethylene.
Claims (7)
1. a development machine lips U-shaped pull bar envelope, it is characterized in that, comprise: an annular seal body, described annular seal body one sidewall surfaces has a groove, described annular seal body between another opposing sidewalls and madial wall, there is a right-angle recess, an anti-extrusion support ring Matching installation is in described right-angle recess.
2. development machine lips U-shaped pull bar envelope according to claim 1, it is characterized in that, the described groove both sides of described annular seal body are respectively anterior lip and posterior lip, and described posterior lip is near the madial wall of described annular seal body, and described anterior lip is near the outer side wall of described annular seal body.
3. development machine lips U-shaped pull bar envelope according to claim 1, it is characterized in that, described groove is a U-shaped groove.
4. development machine lips U-shaped pull bar envelope according to claim 1, it is characterized in that, described groove is a v-depression.
5. development machine lips U-shaped pull bar envelope according to claim 4, it is characterized in that, the angle between the two side of described v-depression is 90 degree.
6., according to the arbitrary described development machine lips U-shaped pull bar envelope of claim 1 ~ 5, it is characterized in that, described annular seal body adopts high performance polyurethane.
7., according to the arbitrary described development machine lips U-shaped pull bar envelope of claim 1 ~ 5, it is characterized in that, described support ring adopts polyoxymethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736143.4U CN204358103U (en) | 2014-12-01 | 2014-12-01 | Development machine lips U-shaped pull bar seals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420736143.4U CN204358103U (en) | 2014-12-01 | 2014-12-01 | Development machine lips U-shaped pull bar seals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204358103U true CN204358103U (en) | 2015-05-27 |
Family
ID=53259574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420736143.4U Expired - Fee Related CN204358103U (en) | 2014-12-01 | 2014-12-01 | Development machine lips U-shaped pull bar seals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204358103U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353090A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Gas sensor calibration container capable of being sealed |
-
2014
- 2014-12-01 CN CN201420736143.4U patent/CN204358103U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353090A (en) * | 2015-11-30 | 2016-02-24 | 无锡拓能自动化科技有限公司 | Gas sensor calibration container capable of being sealed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20181201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |