CN202578246U - Pneumatic pre-tensioning mechanism for vacuum chamber door - Google Patents
Pneumatic pre-tensioning mechanism for vacuum chamber door Download PDFInfo
- Publication number
- CN202578246U CN202578246U CN2012201352837U CN201220135283U CN202578246U CN 202578246 U CN202578246 U CN 202578246U CN 2012201352837 U CN2012201352837 U CN 2012201352837U CN 201220135283 U CN201220135283 U CN 201220135283U CN 202578246 U CN202578246 U CN 202578246U
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- clamp
- bearing
- vacuum chamber
- tensioning mechanism
- anchor clamps
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Abstract
The utility model discloses a pneumatic pre-tensioning mechanism for a vacuum chamber door. The pneumatic pre-tensioning mechanism for the vacuum chamber door comprises a cylinder body, a cylinder push rod, a barrel support, a flange support, a clamp tail, a clamp body and a clamp head, wherein the barrel support is connected with the cylinder body through a first pin shaft; the cylinder push rod is connected with the clamp tail through a second pin shaft; the clamp body is connected with the flange support through a third pin shaft; the clamp head is provided with a gap for installing a bearing; and the bearing is arranged in the gap through a fourth pin shaft. The pre-tensioning force of the pre-tensioning mechanism can be adjusted by controlling the pressure of compressed air which is introduced into the cylinder body; the structure is simple and reliable; because of the bearing, the phenomenon of blockage when the clamp head is in stressed contact with a cover flange can be prevented; the abrasion of a clamp can be reduced by the rolling of the bearing; and simultaneously, the maximum pre-tightening force can be achieved.
Description
Technical field
The utility model relates to a kind of mechanical mechanism that pretightning force is provided, and particularly relates to a kind of pneumatic pre-tightening mechanism that pretightning force is provided for door for vacuum chamber.
Background technology
All kinds of vacuum chambers are provided with door, and one of its purpose is to be convenient in the various mechanisms of indoor installation, and it two is to be used to fetch and deliver material and material.Door normally is made up of sealing flange, door-plate, door hinge, sealing ring etc.The unlatching of door can be used manual or motor-driven.Men Shangyou steps up mechanism.The main effect that steps up mechanism is to sealing ring certain " pretightning force ", and the pressure of this " pretightning force " is 0.5MPa～0.8MPa.The type of stepping up mechanism has leading screw and nut mechanism, off-centre to step up mechanism, wedge mechanism etc.Feed screw nut's type is stepped up comparatively complicacy of the common structure of mechanism, and leading screw is the very high part of a kind of precision, the machining accuracy of having relatively high expectations, and cost of production is big.Eccentric clamp mechanism is with the direct or indirect clamping work pieces of eccentric part.The eccentric part type has two kinds: circle is eccentric, curve is eccentric.Circle off-centre has advantages such as simple in structure, easy to operate, that clamping is rapid.But also have some shortcomings, as clamping force with clamp that stroke is little, self-locking poor reliability, structure impact resistance be relatively poor.Wedge shape is stepped up the shortcoming that there is the self-locking poor reliability equally in mechanism.These three kinds of clamp mechanism all are not suitable for for door for vacuum chamber provides pretightning force.
So to above-mentioned prior art; The applicant thinks and is necessary to improve; The applicant has carried out number of patents document and non-patent literature retrieval for this reason; And do not see that referential teachings is arranged in the disclosed document, the technical scheme that will introduce below produces under this background.
Summary of the invention
It is a kind of simple in structure and can be used for clamping the pneumatic pinch mechanism of door for vacuum chamber that the task of the utility model is to provide.
The task of the utility model is accomplished like this; The pneumatic pre-tightening mechanism of door for vacuum chamber; It is characterized in that, comprise cylinder block, cylinder push-rod, barrel support, flange support, anchor clamps afterbody, chuck body and anchor clamps head, said barrel support is connected with cylinder block through first bearing pin; Said cylinder push-rod is connected with the anchor clamps afterbody through second bearing pin, and chuck body is through the 3rd bearing pin and flange support and connection.
In a specific embodiment of the utility model, said anchor clamps head has can bearings mounted gap, and bearing is installed in the said gap through the 4th bearing pin.
Beneficial effect: the technical scheme that the utility model provides; By compressed air in the cylinder block pretightning force is provided, the compressed air pressure that feeds cylinder block through control is a scalable pre-tightening mechanism pretightning force, and the structure order is reliable; The bearing that the anchor clamps head clearance is installed; Kill phenomenon in the time of can preventing that anchor clamps and cover flange are stressed and contact, reduce the wearing and tearing of anchor clamps, can obtain maximum pretightning force simultaneously again through the rolling of bearing.
Description of drawings
Fig. 1 is the example structure sketch map of the utility model.
Fig. 2 is the clamp structure sketch map
The specific embodiment
Can be expressly understood the technical spirit and the beneficial effect of the utility model more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description of embodiment all is not the restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be regarded as the technical scheme category of the utility model.
Embodiment:
Ask for an interview Fig. 1; Barrel support 3 is that 304 stainless steels of 20mm are used the plasma digital control cutting machine cutting and formed by two thickness; Stainless steel first bearing pin through 30mm connects cylinder block 1, and the cylinder diameter of cylinder block 1 is 200mm, under the pressure of 0.3MPa, can produce the thrust of 9425N in theory.Chuck body 6 is installed in two flanges through the 3rd bearing pin and supports in the middle of 4; Flange supports 4 and is welded on the shell flange; Anchor clamps afterbody 5 links to each other with cylinder push rod 2 through second bearing pin, and having at anchor clamps head 7 can bearings mounted gap 8, and bearing 9 is installed in the gap 8 through the 4th bearing pin.Bearing can prevent to kill phenomenon when contacting when anchor clamps head and cover flange are stressed, reduces the wearing and tearing of anchor clamps through the rolling of bearing, can obtain maximum pretightning force simultaneously again.
Claims (2)
1. the pneumatic pre-tightening mechanism of door for vacuum chamber; It is characterized in that; Comprise that cylinder block (1), cylinder push-rod (2), barrel support (3), flange support (4), anchor clamps afterbody (5), chuck body (6) and anchor clamps head (7); Said barrel support (3) is connected with cylinder block (1) through first bearing pin, and said cylinder push-rod (2) is connected with anchor clamps afterbody (5) through second bearing pin, and chuck body (6) supports (4) through the 3rd bearing pin and flange and is connected.
2. the pneumatic pre-tightening mechanism of door for vacuum chamber according to claim 1 is characterized in that, said anchor clamps head (7) has can bearings mounted gap (8), and bearing (9) is installed in the said gap (8) through the 4th bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201352837U CN202578246U (en) | 2012-04-01 | 2012-04-01 | Pneumatic pre-tensioning mechanism for vacuum chamber door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201352837U CN202578246U (en) | 2012-04-01 | 2012-04-01 | Pneumatic pre-tensioning mechanism for vacuum chamber door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202578246U true CN202578246U (en) | 2012-12-05 |
Family
ID=47247669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201352837U Expired - Lifetime CN202578246U (en) | 2012-04-01 | 2012-04-01 | Pneumatic pre-tensioning mechanism for vacuum chamber door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202578246U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593177A (en) * | 2016-07-08 | 2017-04-26 | 北京卫星环境工程研究所 | Large vacuum container gate operation mechanism |
| CN110359778A (en) * | 2018-12-17 | 2019-10-22 | 中国航发动力股份有限公司 | A kind of locking device at vacuum chamber sealing gate and the vacuum chamber sealing gate for being able to bear positive/negative-pressure |
-
2012
- 2012-04-01 CN CN2012201352837U patent/CN202578246U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593177A (en) * | 2016-07-08 | 2017-04-26 | 北京卫星环境工程研究所 | Large vacuum container gate operation mechanism |
| CN106593177B (en) * | 2016-07-08 | 2018-06-22 | 北京卫星环境工程研究所 | Large size vacuum vessel gate operating mechanism |
| CN110359778A (en) * | 2018-12-17 | 2019-10-22 | 中国航发动力股份有限公司 | A kind of locking device at vacuum chamber sealing gate and the vacuum chamber sealing gate for being able to bear positive/negative-pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |