CN103161814A - Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism - Google Patents
Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism Download PDFInfo
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- CN103161814A CN103161814A CN2013101234806A CN201310123480A CN103161814A CN 103161814 A CN103161814 A CN 103161814A CN 2013101234806 A CN2013101234806 A CN 2013101234806A CN 201310123480 A CN201310123480 A CN 201310123480A CN 103161814 A CN103161814 A CN 103161814A
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Abstract
The invention relates to a pre-tightening-force-adjustable anti-loosening rotating shaft mechanism which comprises a screw, a gasket, anti-loosening sleeves, a fastening adjusting connecting piece, a fixed rotating shaft and a movable rotating shaft. An annular protruding edge is arranged at one end of each anti-loosening sleeve. An annular U-shaped convex-concave groove is formed at the other end of each anti-loosening sleeve. The two anti-loosening sleeves are respectively and oppositely inserted in from two sides of the fixed rotating shaft and the movable rotating shaft. The two U-shaped convex-concave grooves are inserted into each other and are connected in a matched mode. The two anti-loosening sleeves are in pre-tightening-force-adjustable connection through the gasket, the screw and the fastening adjusting connecting piece. According to the pre-tightening-force-adjustable anti-loosening rotating shaft mechanism, the anti-loosening sleeves only need to be arranged on an original rotating shaft structure, original parts do not need to be machined, mounting and disassembling are easy, and compared with other anti-loosening devices, the anti-loosening efficiency of the mechanism can be greatly improved, good stability is achieved, and pre-tightening force can be manually adjusted.
Description
Technical field
The present invention relates to a kind of rotary shaft mechanism, particularly a kind of locking rotary shaft mechanism of pretightening force that utilizes locking thread.
Background technique
Rotary shaft mechanism is the widely used a kind of mechanism of modern industry, under shock and vibration or alternate load effect, it is very insecure that the simple pretightening force of utilizing regular screw threads to connect is carried out locking, be connected with and become flexible, throw off even fully, this class situation has the possibility that causes crushing accident for aviation field.
In prior art, locking thread adopts following three kinds of forms mostly: utilize friction locking, directly pin locking, to destroy the screw pair relation locking.Utilize friction locking: namely to increase pressure and frictional force between screw pair, relatively rotate preventing, and general pretightening force is all to be applied directly on fastener.Directly pin locking: namely with the metalwork constraint screw pair of being convenient to change, for example utilize cotter pin to make screw thread relatively fixing.Destroy the screw pair relation locking: namely screw pair is transformed into non-kinematic pair, thereby get rid of in relative rotation may, such as welding etc.Existing locking device also all has different narrow limitation, for example utilizes the locking device of friction, be only applicable to low speed or operating mode more stably, and reliability is not high; Utilize and directly pin locking device, join the brill cotter pin and can seriously reduce its Security for the bolt that bears larger load; Utilize and destroy the inapplicable frequent dismounting of screw pair relation, key position is not generally adopted this mode.
Patent CN101963182 discloses the screw retention that a kind of pretightening force does not act on fastener, nut one end of this device is with polygonal hole, the other end is threaded the hole, and the polygonal locked spacer is installed in the polygonal hole of nut, and the eccentric opening that utilizes screw to pass the polygonal locked spacer is connected with bolt, prevents that with this nuts and bolt from relatively rotating.But this kind locking device processing cost is relatively high, and hour inapplicable when the diameter of bolt, installs complicated.
Summary of the invention
For above problem, the invention provides the locking rotary shaft mechanism of a kind of preload adjustable, this locking rotary shaft mechanism can guarantee when rotating shaft relatively rotates that between screw and nut, nothing relatively rotates, thereby reaches locking purpose.
To achieve these goals, the technical solution used in the present invention is as follows:
The locking rotary shaft mechanism of a kind of preload adjustable, comprise screw, pad, sleeve retainer, fastening adjustment link, fixed rotating shaft, movable rotating shaft, be characterized in: sleeve retainer one end is provided with annular nib, the other end is provided with ring-type U-shaped emboss pit, two sleeve retainers insert in opposite directions from fixed rotating shaft and movable rotary shaft hole both sides respectively, and two U-shaped tongue and grooves insert mutually and are connected, and are connected with fastening adjustment link preload adjustable by pad, screw between two sleeve retainers.
Screw one end is provided with the manual change that can manually twist bolt, and the fastening adjustment link is nut.
Screw is round head bolt, and the fastening adjustment link is wing nut.
Screw is round head bolt, and round head bolt screw rod one end is threaded the hole, and fastening adjustment link 4 is slotted pan head screw, is threaded between round head bolt and slotted pan head screw.
Beneficial effect of the present invention is: the present invention utilizes the preload adjustable rotary shaft mechanism of sleeve retainer, utilize sleeve retainer contact with threaded connector and separate with fastener, between threaded connector, nothing relatively rotates so that it guarantees the locking stability of pretightening force thereby reach.The present invention only needs to install sleeve retainer and get final product on original structure, need not original component are processed, and its installation, dismounting are simply, relative other locking device, its locking efficient can significantly improve, and has better stability, but the size of its pretightening force of manual tune.
Description of drawings
Fig. 1 is sleeve retainer structural upright schematic diagram;
Fig. 2 is one of structure embodiment of the present invention partial sectional view;
Fig. 3 is structure embodiment's of the present invention two partial sectional views;
Fig. 4 is structure embodiment's of the present invention three partial sectional views.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figures 1 to 4, the locking rotary shaft mechanism of preload adjustable of the present invention comprises screw 1, pad 2, sleeve retainer 3, fastening adjustment link 4, fixed rotating shaft 5, movable rotating shaft 6.
As shown in Figure 1, sleeve retainer 3 one ends are provided with annular nib, the other end is provided with ring-type U-shaped emboss pit, two sleeve retainers 3 insert in opposite directions from fixed rotating shaft 5 and movable rotating shaft 6 both sides, hole respectively, and two U-shaped tongue and grooves insert mutually and are connected, and are connected preload adjustable with the fastening adjustment link by pad 2, screw 1 between two sleeve retainers 3 and connect.
As shown in Figure 2, screw 1 one ends are provided with manual change, can manually twist screw 1, to regulate the size of pretightening force.Fastening adjustment link 4 is nut.Pass through rotating shaft, it is produced relative rotation, utilize the static friction that sleeve retainer 3 contacts with rotating shaft to drive a pair of sleeve retainer of installing in opposite directions 3 rotations, and then guarantee that between screw 1 and nut, nothing relatively rotates the generation of power, thereby realize the constant of pretightening force and reach locking purpose.
As shown in Figure 3, screw 1 is round head bolt, and fastening adjustment link 4 is wing nut, manually turns wing nut and also can realize the locking rotary shaft mechanism of preload adjustable.
As shown in Figure 4, screw 1 is round head bolt, and round head bolt screw rod one end is threaded the hole, and fastening adjustment link 4 is slotted pan head screw, be threaded between round head bolt and slotted pan head screw, rotate slotted pan head screw and can realize the locking rotary shaft mechanism of preload adjustable.
When the movable rotating shaft 6 of rotation, rotate because static friction drives a pair of sleeve retainer 3, and then make between screw 1 and fastening adjustment link 4 without relatively rotating by pad 2.Prevent from diminishing because multiple rotary rotating shaft 6 makes pretightening force thereby reach, loosening between rotating shaft.
The a pair of sleeve retainer 3 of installing in opposite directions is installed in two relative rotating shaft endoporus, sleeve retainer 3 one ends are arranged on hole end surface in rotating shaft, and the other end is U-shaped concave-convex annular groove, guarantee that sleeve retainer 3 is without relatively rotating, and two cover sleeve retainers 3 can move axially, and are adjustable to guarantee pretightening force.When rotating shaft relatively rotates, rotating shaft utilizes static friction to drive and is in contact with it sleeve retainer 3 rotations, because utilizing the U-shaped tongue and groove, two sleeve retainers 3 guarantee without relatively rotating, rotate therefore drive simultaneously opposite side sleeve retainer 3, thus realize with the screw 1 of sleeve retainer 3 homonymies and fastening adjustment link 4 that opposite side sleeve retainer 3 contacts between nothing relatively rotate.
Claims (4)
1. locking rotary shaft mechanism of preload adjustable, comprise screw (1), pad (2), sleeve retainer (3), fastening adjustment link (4), fixed rotating shaft (5), movable rotating shaft (6), it is characterized in that: described sleeve retainer (3) one ends are provided with annular nib, the other end is provided with ring-type U-shaped emboss pit, two sleeve retainers (3) insert in opposite directions from fixed rotating shaft (5) and movable rotating shaft (6) both sides, hole respectively, and two U-shaped tongue and grooves insert mutually and are connected, pass through pad (2) between two sleeve retainers (3), screw (1) is connected 4 with the fastening adjustment link) the preload adjustable connection.
2. the locking rotary shaft mechanism of preload adjustable according to claim 1, it is characterized in that: described screw (1) one end is provided with the manual change that can manually twist bolt, and fastening adjustment link (4) is nut.
3. the locking rotary shaft mechanism of preload adjustable according to claim 1, it is characterized in that: described screw (1) is round head bolt, and fastening adjustment link (4) is wing nut.
4. the locking rotary shaft mechanism of preload adjustable according to claim 1, it is characterized in that: described screw (1) is round head bolt, round head bolt screw rod one end is threaded the hole, and fastening adjustment link (4) is slotted pan head screw, is threaded between round head bolt and slotted pan head screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101234806A CN103161814A (en) | 2013-04-11 | 2013-04-11 | Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101234806A CN103161814A (en) | 2013-04-11 | 2013-04-11 | Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103161814A true CN103161814A (en) | 2013-06-19 |
Family
ID=48585220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101234806A Pending CN103161814A (en) | 2013-04-11 | 2013-04-11 | Pre-tightening-force-adjustable anti-loosening rotating shaft mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103161814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791902A (en) * | 2018-04-28 | 2018-11-13 | 湖北航宇嘉泰飞机设备有限公司 | Mutual interference formula locking gear and aero seat |
| CN112228702A (en) * | 2020-09-29 | 2021-01-15 | 浙江优力仕机电科技股份有限公司 | Mounting structure of motor |
| CN114087271A (en) * | 2021-11-13 | 2022-02-25 | 中车大连机车车辆有限公司 | Positioning device for locomotive gear box and positioning and indirect anti-loosening method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177120Y (en) * | 1993-07-17 | 1994-09-14 | 张吉林 | Anti-loose, anti-theft fastening bolt |
| DE19731305A1 (en) * | 1997-07-14 | 1999-02-04 | Brose Fahrzeugteile | Articulated joint for seat height adjustment |
| CN2373614Y (en) * | 1999-04-05 | 2000-04-12 | 刘长庚 | Wire-connecting hook for hot-line work |
| CN2377390Y (en) * | 1999-06-25 | 2000-05-10 | 石家庄铁道学院 | Full cone steel pin |
| CN2534413Y (en) * | 2002-04-29 | 2003-02-05 | 张振坤 | Screw-bolt pin |
| CN202326636U (en) * | 2011-11-09 | 2012-07-11 | 南车二七车辆有限公司 | Connecting device between rail wagon workpieces |
| WO2012174951A1 (en) * | 2011-06-21 | 2012-12-27 | 北汽福田汽车股份有限公司 | Bolt set |
-
2013
- 2013-04-11 CN CN2013101234806A patent/CN103161814A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2177120Y (en) * | 1993-07-17 | 1994-09-14 | 张吉林 | Anti-loose, anti-theft fastening bolt |
| DE19731305A1 (en) * | 1997-07-14 | 1999-02-04 | Brose Fahrzeugteile | Articulated joint for seat height adjustment |
| CN2373614Y (en) * | 1999-04-05 | 2000-04-12 | 刘长庚 | Wire-connecting hook for hot-line work |
| CN2377390Y (en) * | 1999-06-25 | 2000-05-10 | 石家庄铁道学院 | Full cone steel pin |
| CN2534413Y (en) * | 2002-04-29 | 2003-02-05 | 张振坤 | Screw-bolt pin |
| WO2012174951A1 (en) * | 2011-06-21 | 2012-12-27 | 北汽福田汽车股份有限公司 | Bolt set |
| CN202326636U (en) * | 2011-11-09 | 2012-07-11 | 南车二七车辆有限公司 | Connecting device between rail wagon workpieces |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108791902A (en) * | 2018-04-28 | 2018-11-13 | 湖北航宇嘉泰飞机设备有限公司 | Mutual interference formula locking gear and aero seat |
| CN112228702A (en) * | 2020-09-29 | 2021-01-15 | 浙江优力仕机电科技股份有限公司 | Mounting structure of motor |
| CN114087271A (en) * | 2021-11-13 | 2022-02-25 | 中车大连机车车辆有限公司 | Positioning device for locomotive gear box and positioning and indirect anti-loosening method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130619 |