CN201666328U - Shock absorber - Google Patents
Shock absorber Download PDFInfo
- Publication number
- CN201666328U CN201666328U CN2009201539288U CN200920153928U CN201666328U CN 201666328 U CN201666328 U CN 201666328U CN 2009201539288 U CN2009201539288 U CN 2009201539288U CN 200920153928 U CN200920153928 U CN 200920153928U CN 201666328 U CN201666328 U CN 201666328U
- Authority
- CN
- China
- Prior art keywords
- shock
- vibration
- absorbing
- damping rod
- proof mounting
- 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 - Lifetime
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Abstract
The utility model discloses a shock absorber for connecting components between adjacent components in an MWD/LWD and other underground measuring instruments. The shock absorber comprises a shock-absorbing rod (1), shock-absorbing rubber (2) and a shock-absorbing seat (3). The shock absorber is characterized in that: the excircle of the shock-absorbing rod (1) is provided with an external ring-shaped groove; the inner hole of the shock-absorbing seat (3) is provided with an internal ring-shaped groove; the groove-top excircle of the shock-absorbing rod (1) is larger than the diameter of the bottom hole of the ring-shaped groove; the shock-absorbing rod (1) and the shock-absorbing seat (3) are respectively provided with n longitudinal grooves similar to splines; the shock-absorbing rod (1) is inserted into the shock-absorbing seat (3) and rotates an angle of 360/2n DEG and then is pasted with the shock-absorbing rubber in a heat vulcanization way. The shock-absorbing rubber plays a role in absorbing shock in the shock absorber, while, both ends of the shock-absorbing rod and the shock-absorbing seat can have different connecting types according to different instrument models of the specific instruments. In the utility model, the shock absorber can obtain different shock-absorbing effects due to different hardness and elasticity, and obtains higher reliability under the circumstance that the shock absorber has simplifier structure than that of other like products.
Description
Technical field:
The utility model belongs to a kind of vibration damping equipment, is a kind of vibration damper.
Background technique:
In downhole instruments such as existing MWD/LVVD as adjacent component between the vibration damper of linkage member, also be the structure that adopts two ends metal coupling unit and vibration isolation rubber etc. to form mostly, it is rubber-coated that for example the column centre is all made at the inboard two ends of vibration damper, one end is made column one end and is made vulcanized rubber in the middle of the tubular, and an end metalwork is made column and sulfuration and had some ring-shaped rubbers to press-fit and be bonded in structure on the other end tubular inwall etc.In these damper structures, because misgivings are bonding or press-fit fastness and be affected, the hardness range of choice of rubber material is limited to some extent, and damping property is had certain influence, moreover in case rubber will have an accident with the disengagement of two ends metalwork accident.Some companies have done improvement to this, the complex structure though performance improves, being still within the bounds of possibility of the accident that meets accident; The vibration damper of approaching a kind of structure of the present utility model, the metalwork at two ends has adopted super large pitch square threaded form, its gap location sulfuration has vibration isolation rubber, though this structure can reduce the risk of vibration damper accidental largely, but minor diameter super large pitch square threaded form (particularly tapped hole) processing is very difficult, and, reduced reliability being subjected to the trend that the super large pitch screw can occur rotating under the situation of axial force.
Summary of the invention:
The purpose of this utility model is, with than the simpler structure of like product in the past, better manufacturability and wideer vibration isolation rubber range of choice provide to have the more product of high reliability.
For achieving the above object, the technological scheme that the utility model is taked is: a kind of vibration damper, it includes damping rod (1), vibration isolation rubber (2) and vibration proof mounting (3) etc., this vibration damper is characterised in that, the design of damping rod (1) cylindrical has outer annular groove, the design of vibration proof mounting (3) hole, lining has interior circular groove, the circular groove top cylindrical ratio of damping rod (1)
The circular groove bottom diameter of vibration proof mounting (3) is big, damping rod (1) and vibration proof mounting (3) have respectively and spline similar n bar longitudinal fluting or projection, after damping rod (1) inserts vibration proof mounting (3) and rotates 360/2n degree angle by being bonded together with vibration isolation rubber heat-vulcanized mode, damping rod (1) can have different external connection patterns with vibration proof mounting (3) two ends according to specifically the instrument model is different, also can make an integral body with the relevant portion of instrument.
In this structure, circular groove has replaced the super large pitch square threaded form of similar products that manufacturability is greatly improved, and the structure of similar spline not only makes the application of circular groove become possibility, has also prevented the angle relative movement of damping rod and vibration proof mounting; Because the groove top cylindrical of damping rod is bigger than the circular groove bottom diameter of vibration proof mounting in this structure, only otherwise take place because the structural damage that the metalwork strength deficiency causes, damping rod and vibration proof mounting just can not come off, in the reliability that has improved vibration damper to a greater extent.
In the vibration damper of using this structure, rubber and Bond Strength decrease to the influence of vibration damper reliability, so the change of the range of choice of rubber material is big, and therefore the damping property of vibration damper might be improved.
Description of drawings:
Fig. 1 is the schematic representation of vibration damper of the present utility model;
Fig. 2 is the A-A sectional drawing;
Fig. 3 is the B-B sectional drawing.
Embodiment:
As shown in Figure 1, vibration damper of the present utility model includes damping rod 1, major components such as vibration isolation rubber 2 and vibration proof mounting 3.As shown in Figures 2 and 3, wherein the design of damping rod 1 cylindrical has the multi-turn outer annular groove, and 3 li hole designs of vibration proof mounting have corresponding interior circular groove, and the circular groove top cylindrical of damping rod 1 is bigger than the circular groove bottom diameter of vibration proof mounting 3.Damping rod 1 and vibration proof mounting 3 be owing to be processed with n bar longitudinal fluting respectively, makes it to look from an end to present the concavo-convex alternate structural type that is similar to spline.Wherein, n is a positive integer, for example between ... with the similar n bar of spline longitudinal fluting structure, wherein n is a positive integer, for example between 2～6, is preferably in the present embodiment and equals 3, and certainly, to those skilled in the art, n also can select other numerical value for use.Damping rod 1 is bonded together by heat-vulcanized mode and vibration isolation rubber 2 after inserting vibration proof mounting 3 and rotating 360/2n degree angle, particularly, damping rod 1 and vibration proof mounting 3 all scribble tackiness agent, after inserting vibration proof mounting 3 and rotate 360/2n degree angle, damping rod 1 is put into mould, vibration isolation rubber enters vibration damper to annotate forms such as pressure, is bonded together by heat-vulcanized mode and damping rod 1 and vibration proof mounting 3.Vibration isolation rubber 2 mainly plays damping effect in vibration damper, and damping rod 1 can have different external connection patterns with vibration proof mounting 3 two ends according to specifically the instrument model is different, also can make an integral body with the relevant portion of instrument.
Claims (6)
1. vibration damper, it includes damping rod (1), vibration isolation rubber (2) and vibration proof mounting (3), it is characterized in that, the design of damping rod (1) cylindrical has outer annular groove, the design of vibration proof mounting (3) hole, lining has interior circular groove, the circular groove top cylindrical of damping rod (1) is bigger than the circular groove bottom diameter of vibration proof mounting (3), damping rod (1) and vibration proof mounting (3) have respectively n bar longitudinal fluting wherein n be positive integer, after damping rod (1) inserts vibration proof mounting (3) and rotates 360/2n degree angle by being bonded together with vibration isolation rubber heat-vulcanized mode.
2. vibration damper as claimed in claim 1, it is characterized in that damping rod (1) and vibration proof mounting (3) all scribble tackiness agent, after inserting vibration proof mounting (3) and rotate 360/2n degree angle, damping rod (1) is put into mould, vibration isolation rubber enters vibration damper with the form of annotate pressing, and is bonded together by heat-vulcanized mode and damping rod (1) and vibration proof mounting (3).
3. vibration damper as claimed in claim 1 is characterized in that damping rod (1) can have different external connection patterns with vibration proof mounting (3) two ends according to specifically the instrument model is different.
4. vibration damper as claimed in claim 1, it is characterized in that in damping rod (1) and the vibration proof mounting (3) an end or to make an integral body with the relevant portion of instrument.
5. vibration damper as claimed in claim 1 is characterized in that described damping rod or vibration proof mounting owing to be processed with longitudinal fluting, thereby looks from an end and to present the form that is similar to spline.
6. as each described vibration damper in the claim 1 to 5, it is characterized in that n is between 2～6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201539288U CN201666328U (en) | 2009-05-18 | 2009-05-18 | Shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201539288U CN201666328U (en) | 2009-05-18 | 2009-05-18 | Shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666328U true CN201666328U (en) | 2010-12-08 |
Family
ID=43267288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201539288U Expired - Lifetime CN201666328U (en) | 2009-05-18 | 2009-05-18 | Shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666328U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030307A (en) * | 2019-03-05 | 2019-07-19 | 中国航发北京航空材料研究院 | A kind of Anti-pull-press high rigidity cylinder type damper |
-
2009
- 2009-05-18 CN CN2009201539288U patent/CN201666328U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030307A (en) * | 2019-03-05 | 2019-07-19 | 中国航发北京航空材料研究院 | A kind of Anti-pull-press high rigidity cylinder type damper |
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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: 20101208 |