CN204942222U - A kind of eccentric bush with auto-lock function - Google Patents
A kind of eccentric bush with auto-lock function Download PDFInfo
- Publication number
- CN204942222U CN204942222U CN201520734659.XU CN201520734659U CN204942222U CN 204942222 U CN204942222 U CN 204942222U CN 201520734659 U CN201520734659 U CN 201520734659U CN 204942222 U CN204942222 U CN 204942222U
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- China
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- self
- lining body
- locking nut
- eccentric bush
- lock function
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Abstract
The utility model provides a kind of eccentric bush with auto-lock function, it is characterized in that: be made up of lining body and self-locking nut, and self-locking nut is sleeved on lining body, and described self-locking nut rear portion endoporus is oval, plays mechanical self-latching function; The shaft shoulder of described lining body is hex head bolt capitiform formula.Class fit of the present utility model is suitable, easy for installation, adjustment is simple, safeguard that replacing is quick.
Description
Technical field
The utility model relates to a kind of eccentric bush with auto-lock function, moves tolerance compensating and implementation structure auto-lock function for structure manufacturing hole is biased.
Background technique
Aeronautical product large modular construction part is generally semi-rigid body, i.e. rigidity but also be not too strong, and component exist certain distortion, but structure has necessarily just also cannot carry out effective school shape.This kind of structural type general made allowance that adopts in product specification or technological design carries out method for finishing manufactured.But fine finishing can cause Fixture Design to manufacture complicated (needing positioner special), processed complex (needing power plant), process the problems such as consuming time, and especially for large parts, fine finishing cost is very huge.Position, hole is coordinated, eccentric bush have easy processing, easy for installation, safeguard the advantages such as quick, easy and simple to handle, the eccentric bush therefore configuring seriation very has advantage in the large member apertures position of aeronautical product is coordinated.The eccentric bush that aeronautical product adopts now reaches relaxation effect by outer aperture and structure interference fit mostly, the required precision of part quality of fit is high, part manufactures difficulty, matching requirements are high, the adjustment of position, hole is difficult, affect by factors such as vibrations, impact forces, service time, length likely can loosen, the danger even come off.
Summary of the invention
Manufacture difficulty to overcome traditional eccentric bush, difficulty is installed, adjusts difficulty, safeguards shortcomings such as changing difficulty.On the basis of using for reference position, traditional eccentric bush hole compensation principle, the utility model provides that a kind of class fit is suitable, easy for installation, adjustment is simple, eccentric bush is efficiently changed in maintenance.
The utility model is realized by following technical proposals, and this eccentric bush is made up of lining body and self-locking nut, and self-locking nut is sleeved on lining body.
One end of described lining body is the shaft shoulder of hex head bolt capitiform formula, is polished rod part in the middle part of lining body, and pressing structure body portion, the lining body the other end is helical thread portion, and helical thread portion coordinates with self-locking nut.
The internal thread holes previous section of described self-locking nut is circular, and rear face transition is slotted eye, and just can play mechanical self-latching function during round rear ellipse self-locking nut before the press-in of lining body, it is that convenience spanner is locked that self-locking nut root is set to hexagon.
Class fit of the present utility model is suitable, easy for installation, adjustment is simple, safeguard that replacing is quick.
Accompanying drawing explanation
Fig. 1 is the sectional view of lining body.
Fig. 2 is the right elevation of lining body.
Fig. 3 is the plan view of self-locking nut.
Fig. 4 is the side view of self-locking nut.
Fig. 5 is the schematic diagram of eccentric bush.
Fig. 6 is the assembling schematic diagram between eccentric bush and assembly
1. lining body 2. self-locking nut 3. assembly A4. assembly B5. fastening piece 11. shaft shoulder 12. polished rod part 13. helical thread portions in figure.
Embodiment
As shown in Figure 6, this eccentric bush is made up of lining body 1 and self-locking nut 2, and self-locking nut 2 is sleeved on lining body 1, carries out self-locking by self-locking nut 2.
As depicted in figs. 1 and 2, one end is the shaft shoulder 11 of hex head bolt capitiform formula to lining body, and convenience spanner turns lining body 1 to adjust the eccentric orientation (or angle) of lining; Be polished rod part 12 in the middle part of lining body 1, pressing structure body portion, length is determined by the thickness of structural matrix; Lining body 1 the other end is helical thread portion 13, coordinate with self-locking nut 2, thread is general form (as 1.5), helical thread portion 13 1mm less of lining body polished rod section diameter, and the transition region of helical thread portion and polished rod part 12 has chamfering, lining body 1 is facilitated to be pressed into.
Described self-locking nut as shown in Figure 3 and Figure 4, self-locking nut internal thread holes previous section is circular, rear face transition is slotted eye, and just can play mechanical self-latching function during round rear ellipse self-locking nut before lining body 1 is pressed into, it is that convenience spanner is locked that self-locking nut root is set to hexagon.The schematic diagram of eccentric bush as shown in Figure 5, by rotating above-mentioned lining body, utilizes the offset of lining to reach the object of adjustment coaxality.
As shown in Figure 6, when assembly A3 and assembly B4 assembles, there is coaxality requirement, as coaxality requires as being not less than 0.1mm, and find that when preassembly the butt hole coaxality between assembly A and B is overproof, if coaxality is 0.5mm(and overproof 0.4mm), so needing with offset in assembly process is 0.5mm(or 0.4mm) eccentric bush adjust, concrete operation step is as follows:
A) involutory assembly A3 and assembly B4, with assembly B4 for benchmark, the offset of preliminary surveying assembly A3, and indicate eccentric direction; B) by the lining body 1 plugging in fitting body A3 of offset that tentatively determines in a), fix with spanner for one, other end self-locking nut 2 is worn tightly, self-locking nut 2 is rotated by lining body 1 slowly press-in assembly A3 with spanner, eccentric direction is adjusted to marker location in a) after lining body 1 is pressed into assembly A3 completely, oppositely loosen 2 thread spacing again, facilitate follow-up adjustment; C) again by involutory for assembly B4 and assembly A3; by fastening piece 5(pivot pin or bolt, have matching relationship with assembly B4) insert from assembly B4, left rotation and right rotation lining body 1; find the optimum position that pivot pin coordinates, check, record degree of tightness and the drift condition of pivot pin; D) change the lining body 1 of different offset, repeat above b), c) operate, be as the criterion until pivot pin cooperation meets designing requirement.
According to Fig. 6, when product uses wearing and tearing to change, operating procedure is as follows: the specification of record eccentric bush and eccentric direction, unclamps self-locking nut 2, lining body 1 is slowly exited assembly A3, repeats lining body installation steps, can complete replacement operation.
Claims (5)
1. the eccentric bush with auto-lock function, is characterized in that: eccentric bush is made up of lining body and self-locking nut, and self-locking nut is sleeved on lining body.
2. the eccentric bush of band auto-lock function according to claim 1, it is characterized in that: one end of described lining body is the shaft shoulder of hex head bolt capitiform formula, is polished rod part in the middle part of lining body, pressing structure body portion, the lining body the other end is helical thread portion, and helical thread portion coordinates with self-locking nut.
3. the eccentric bush of band auto-lock function according to claim 2, is characterized in that: the internal thread holes previous section of described self-locking nut is for circular, and rear face transition is slotted eye.
4. the eccentric bush of band auto-lock function according to claim 3, is characterized in that: self-locking nut root is set to hexagon.
5. the eccentric bush of band auto-lock function according to claim 2, is characterized in that: helical thread portion is less than lining body polished rod section diameter, and the transition region of helical thread portion and polished rod part has chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734659.XU CN204942222U (en) | 2015-09-22 | 2015-09-22 | A kind of eccentric bush with auto-lock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520734659.XU CN204942222U (en) | 2015-09-22 | 2015-09-22 | A kind of eccentric bush with auto-lock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204942222U true CN204942222U (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520734659.XU Active CN204942222U (en) | 2015-09-22 | 2015-09-22 | A kind of eccentric bush with auto-lock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204942222U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679073A (en) * | 2018-08-03 | 2018-10-19 | 周峰 | Shockproof screw nut external member |
| CN108820243A (en) * | 2018-08-02 | 2018-11-16 | 上海歌诺助航灯光技术有限公司 | A kind of fine tuning of mechanical angle and locking device |
| CN111720435A (en) * | 2019-03-18 | 2020-09-29 | 成都飞机工业（集团）有限责任公司 | Device for adjusting erecting eccentricity of airplane |
-
2015
- 2015-09-22 CN CN201520734659.XU patent/CN204942222U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108820243A (en) * | 2018-08-02 | 2018-11-16 | 上海歌诺助航灯光技术有限公司 | A kind of fine tuning of mechanical angle and locking device |
| CN108679073A (en) * | 2018-08-03 | 2018-10-19 | 周峰 | Shockproof screw nut external member |
| CN108679073B (en) * | 2018-08-03 | 2023-11-14 | 周峰 | Shockproof nut sleeve |
| CN111720435A (en) * | 2019-03-18 | 2020-09-29 | 成都飞机工业（集团）有限责任公司 | Device for adjusting erecting eccentricity of airplane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |