CN204255605U - Sliding supporting structure - Google Patents

Sliding supporting structure Download PDF

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Publication number
CN204255605U
CN204255605U CN201420604264.3U CN201420604264U CN204255605U CN 204255605 U CN204255605 U CN 204255605U CN 201420604264 U CN201420604264 U CN 201420604264U CN 204255605 U CN204255605 U CN 204255605U
Authority
CN
China
Prior art keywords
type groove
contraction section
supporting structure
ball
gatherer
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
Application number
CN201420604264.3U
Other languages
Chinese (zh)
Inventor
程利锋
孙涛
董国强
赵小运
王盛楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gloomy Wind-Tunnel Engineering Of Beijing Space Flight Benefit Co Ltd
Original Assignee
Gloomy Wind-Tunnel Engineering Of Beijing Space Flight Benefit Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gloomy Wind-Tunnel Engineering Of Beijing Space Flight Benefit Co Ltd filed Critical Gloomy Wind-Tunnel Engineering Of Beijing Space Flight Benefit Co Ltd
Priority to CN201420604264.3U priority Critical patent/CN204255605U/en
Application granted granted Critical
Publication of CN204255605U publication Critical patent/CN204255605U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of sliding supporting structure, it is for hypersonic wind tunnel ultra-expanded section, described ultra-expanded section comprises gatherer and contraction section, described contraction section is enclosed within described gatherer, in described gatherer and described contraction section intersection, described sliding supporting structure is between the internal face and the outside wall surface of described contraction section of described gatherer, this sliding supporting structure comprises U-type groove and ball, described U-type groove is arranged along the circumference of the outside wall surface of described contraction section, multiple described ball is provided with in described U-type groove, the diameter of described ball is a bit larger tham the degree of depth of described U-type groove, the width of described U-type groove is identical with described ball diameter.The utility model structure is simple, needs the parts of processing few, easy accessibility.

Description

Sliding supporting structure
Technical field
The present invention relates to a kind of sliding supporting structure, particularly a kind of supporting construction that slides axially for hypersonic wind tunnel ultra-expanded section.
Background technology
Ultra-expanded section is a vitals in hypersonic wind tunnel.Gatherer and contraction section are two critical pieces in ultra-expanded section, and contraction section is enclosed within gatherer.The internal face of gatherer is the face of cylinder of radius about 1m, and the outside wall surface of contraction section is the face of cylinder, and internal face is circular conical surface.Generally contraction section is vertically fixed on the side wall surface in hypersonic wind tunnel experiment cabin, and the support of gatherer is fixed on the bottom surface of experimental cabin, gatherer on its support along wind-tunnel axis moving linearly.Owing to often needing the relative position adjusting gatherer and contraction section before testing; in moving process, the internal face of gatherer and the outside wall surface of contraction section rub; the internal face shape of gatherer and surface can be made to change; the flow field of impact high hypervelocity wind-tunnel; therefore in order to protect inner collector wall face; the outside wall surface of contraction section inlays copper bar, and copper belongs to soft metal, key wear copper bar in friction.Smooth and easy in order to ensure that gatherer runs, under the high manufacturing accuracy prerequisite ensureing inner collector wall face and contraction section outside wall surface, the gatherer of installation and the right alignment of contraction section must reach very high requirement.
Because contraction section internal face is circular conical surface, the wall thickness of contraction section cylindrical shell diminishes gradually, in order to install copper bar, need process an installation site at its outside surface, must ensure the shape of internal face simultaneously, which improves difficulty of processing, add processing charges.Gatherer is mutually vertical with the installed surface of contraction section, if require higher to the right alignment of the two, the difficulty of installation is also very large.Friction between copper bar and inner collector wall face is the friction between face and face, and frictional resistance is larger, drives the power of motor of gatherer motion also higher.In order to cost-saving, the difficulty reducing processing and install, the supporting construction that slides axially needing proposition one new meets the demands.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of sliding supporting structure, especially for the supporting construction in hypersonic wind tunnel ultra-expanded section between gatherer and contraction section.
Sliding supporting structure of the present invention is used for hypersonic wind tunnel ultra-expanded section, described ultra-expanded section comprises gatherer and contraction section, described contraction section is enclosed within described gatherer, in described gatherer and described contraction section intersection, described sliding supporting structure is between the internal face and the outside wall surface of described contraction section of described gatherer, this sliding supporting structure comprises U-type groove and ball, described U-type groove is arranged along the circumference of the outside wall surface of described contraction section, multiple described ball is provided with in described U-type groove, the diameter of described ball is a bit larger tham the degree of depth of described U-type groove, the width of described U-type groove is identical with described ball diameter.
Preferred described U-type groove arranges a circle along the circumference of the outside wall surface of described contraction section, and described U-type groove internal fixtion is provided with multiple block, and described U-type groove is separated out multistage, places multiple described ball, leave gap between adjacent described ball in every section of described U-type groove.
Preferred described block is fixed in described U-type groove by welding or being spirally connected.
The diameter of preferred described ball and the degree of depth difference of described U-type groove are between 1mm and 2mm.
Preferred described U-type groove is provided with multiple tracks along the axis of described contraction section.
The invention has the beneficial effects as follows: the position processing U-type groove selecting wall thickness suitable on contraction section, make to ensure that contraction section surfaces externally and internally form and position tolerance diminishes, reduce processing cost.Owing to there is gap between gatherer and contraction section, require just can reduce a bit to the right alignment of the two when mounted, thus reduce installation difficulty, reduce installation cost.Contraction section and gatherer all and between ball come in contact, sliding friction between the gatherer of prior art and contraction section is become rolling friction, make frictional resistance less, namely reduce the wearing and tearing between gatherer and contraction section, have being more prone to that the adjustment between gatherer and contraction section is become.Structure of the present invention is simple, needs the parts of processing few, easy accessibility.
Accompanying drawing explanation
Fig. 1 is a hypersonic wind tunnel ultra-expanded section schematic diagram;
Fig. 2 is sliding supporting structure schematic diagram;
Fig. 3 is that ball arranges schematic diagram in U-type groove compartment;
Fig. 4 is that ball set is at U-type groove distribution schematic diagram;
Fig. 5 is sliding supporting structure relative position schematic diagram;
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described.
As shown in Figure 1, this supporting construction that slides axially is mainly used between gatherer 1 and contraction section 2, wherein gatherer 1 can move axially on bearing 5, contraction section 2 is connected with waiting straight section 4 by bolt, be fixedly linked Deng straight section 4 and experimental cabin 3 sidewall, bearing 5 is fixed with the bottom of experimental cabin 3.Contraction section 2 is nested in gatherer 1.
As shown in Figure 2, U-type groove be arranged on contraction section 2 outside wall surface circumferentially, one circle U-type groove can be set along whole circumference, utilize link stopper to be separated out several sections of U-type groove, also multistage U-type groove can be circumferentially set whole.And also multiple tracks U-type groove can be set vertically between contraction section 2 and the intersection of gatherer 1.Ball 7 is placed in the U-type groove in contraction section 1, allows it to roll along all directions, or is utilized by ball 7 press strip to limit its circumference rolling, is fixed in certain ad-hoc location of U-type groove.When the position that U-type groove is arranged need ensure that gatherer 1 moves forward and backward vertically, ball 7 is all between gatherer 1 and contraction section 2.
As shown in Figure 3 and Figure 4, U-type groove by being spirally connected or being weldingly fixed in U-type groove, thus is divided into some sections by block 6, is arranged in wherein by ball 7, and the quantity that ball 7 is arranged determines according to the arc length of this section of U-type groove, leaves certain gap during layout.In each section of U-type groove, ball set is arranged at interval.As shown in Figure 4, in whole U-type groove, be furnished with 6 blocks 6 in equally spaced mode, the shape of the form fit U-type groove of block 6, the length of block 6 is at the central angle circumferentially occupying 20 degree of U-type groove.
As shown in Figure 5, the diameter 18mm of ball 7, the degree of depth of U-type groove is 17mm, and width is 18mm.Between gatherer 1 and contraction section 2 allow gap be 2mm, this gap can adjust, ensure ball 7 can not because of excesssive gap therebetween in U-type groove out.The size of U-type groove adjusts according to the diameter of ball 7, and the diameter of ball 7 and the degree of depth difference of U-type groove are between 1mm and 2mm.
Above, the preferred embodiment of the present invention is illustrated, but the present invention is not limited to above-described embodiment.To one skilled in the art, in the category described in claims, various modification or fixed case can be expected apparently, certainly also belong to technology category of the present invention.

Claims (6)

1. a sliding supporting structure, it is for hypersonic wind tunnel ultra-expanded section, described ultra-expanded section comprises gatherer and contraction section, described contraction section is enclosed within described gatherer, in described gatherer and described contraction section intersection, described sliding supporting structure is between the internal face and the outside wall surface of described contraction section of described gatherer, and the feature of this sliding supporting structure is:
Comprise U-type groove and ball, described U-type groove is arranged along the circumference of the outside wall surface of described contraction section, is provided with multiple described ball in described U-type groove, and the diameter of described ball is a bit larger tham the degree of depth of described U-type groove, and the width of described U-type groove is identical with described ball diameter.
2. sliding supporting structure according to claim 1, it is characterized in that: described U-type groove arranges a circle along the circumference of the outside wall surface of described contraction section, described U-type groove internal fixtion is provided with multiple block, described U-type groove is separated out multistage, place multiple described ball in every section of described U-type groove, between adjacent described ball, leave gap.
3. sliding supporting structure according to claim 2, it is characterized in that: described block is fixed in described U-type groove by welding or being spirally connected, described block is furnished with 6 in equally spaced mode in whole U-type groove, the shape of the form fit U-type groove of described block, the length of described block is at the central angle circumferentially occupying 20 degree of described U-type groove.
4. sliding supporting structure according to claim 1, is characterized in that: the diameter of described ball and the degree of depth difference of described U-type groove are between 1mm and 2mm.
5. sliding supporting structure according to claim 4, is characterized in that: the diameter of described ball is 18mm.
6. the sliding supporting structure according to any one of Claims 1 to 4, is characterized in that: described U-type groove is provided with multiple tracks along the axis of described contraction section.
CN201420604264.3U 2014-10-17 2014-10-17 Sliding supporting structure Expired - Fee Related CN204255605U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420604264.3U CN204255605U (en) 2014-10-17 2014-10-17 Sliding supporting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420604264.3U CN204255605U (en) 2014-10-17 2014-10-17 Sliding supporting structure

Publications (1)

Publication Number Publication Date
CN204255605U true CN204255605U (en) 2015-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420604264.3U Expired - Fee Related CN204255605U (en) 2014-10-17 2014-10-17 Sliding supporting structure

Country Status (1)

Country Link
CN (1) CN204255605U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111006838A (en) * 2019-11-29 2020-04-14 中国航天空气动力技术研究院 Nested movable wind tunnel collector device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111006838A (en) * 2019-11-29 2020-04-14 中国航天空气动力技术研究院 Nested movable wind tunnel collector device
CN111006838B (en) * 2019-11-29 2021-10-01 中国航天空气动力技术研究院 Nested movable wind tunnel collector device

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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: 20150408

Termination date: 20151017

EXPY Termination of patent right or utility model