CN104690678A - Device for rapidly dismounting damper bolts - Google Patents
Device for rapidly dismounting damper bolts Download PDFInfo
- Publication number
- CN104690678A CN104690678A CN201310646132.7A CN201310646132A CN104690678A CN 104690678 A CN104690678 A CN 104690678A CN 201310646132 A CN201310646132 A CN 201310646132A CN 104690678 A CN104690678 A CN 104690678A
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- CN
- China
- Prior art keywords
- bolt
- damper
- slave
- driven
- fixture block
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a device for rapidly dismounting damper bolts. The damper bolts can be rapidly dismounted in a small space. According to the technical scheme, the device is characterized in that each of bolt portions of a driving bolt and a driven bolt is sequentially divided into a non-cylindrical portion, a smooth portion and a thread portion from top to bottom, and the thread portion of the driving bolt and the thread portion of the driven bolt are the same in large diameter and pitch but opposite in screwing direction; the non-cylindrical portion of the driving bolt penetrates a driving gear, and the thread portion of the driving bolt is screwed in a first thread hole of a clamping block to abut against the upper surface of a base plate; and the non-cylindrical portion of the driven bolt penetrates a driven gear, and the thread portion of the driven bolt is screwed into a second thread hole in the clamping block to abut against the upper surface of the base plate. The driving bolt and the driven bolt rotate coaxially, and the driving gear and the driven gear are meshed for transmission; the driven gear and the driven bolt coaxially rotate; and the driving gear and the driven gear are the same in size and shape.
Description
Technical field
The present invention relates to helicopter design test field, particularly relate to a kind of device for quick-detachment damper bolt.
Background technology
In the fatigue test of Helicopter Main Hub center piece, need the behaviour in service (appearance and size and tolerance, surface abrasion, crimp etc.) making regular check on damper bolt.
Implementation step is as follows:
1, decomposition run part and loading fixture;
2, bolt is taken out;
3, bolt surface abrasion status is observed;
4, appearance and size and the tolerance of bolt is measured;
5, determine the need of replacing bolt;
6, bolt, testpieces and fixture is reinstalled.
In fatigue test, the damper auricle of center piece and damper load handle and adopt the form that is articulated and connected, and damper bolt wherein bears larger shearing force, can produce obvious crimp.Dismounting damper bolt (being taken out from the damper auricle of center piece by damper bolt) needs to be greater than the axial removal force of 20kN.For solving the regular dismounting of damper bolt in process of the test, need to invent a set of axial removal force device that can produce, in the process of dismounting, this device is guaranteed not produce any uncertain, potential impact to center piece.
At present, demounting bolt have two kinds of operation principles: the 1st kind for back-out mode, first, the face of cylinder of fishbolt or termination; Then, moment is applied by mechanical device, hydraulic means or pneumatic means; Finally, bolt is separated from the part be mated.Corrosion bolt is held tightly by operation principle exactly, utilizes handle to increase the arm of force, realizes Bolt dismantling.Existing LCS bolt detacher for benchmark, is fixed on the face of cylinder of bolt with bolt axis by fixture block, produce the moment of torsion centered by bolt axis, to be shaken the oxide layer of loose screw thread pair and the occlusal surface that gets rusty, realize Bolt dismantling by vibration force.
2nd kind is pushing method, applies one by the side force centered by bolt axis, is ejected by bolt from hole.Operation principle: by U-shaped handle, one end is provided with screwed hole, threaded mandrel is assembled in screwed hole, rotates push rod and is directly ejected by bolt.
Back-out mode and pushing method all need larger operating space, and the apparatus structure screwing out mode is complicated, is only applicable to screw thread pair structure, and pushing method will apply power in threaded termination on bolt.In the fatigue test of Helicopter Main Hub center piece, due to layout and the design feature of damper auricle, on bolt, threaded termination surrounding space is less, and above two kinds of methods all cannot meet the requirement of damper bolt regular dismounting.
Summary of the invention
The technical problem to be solved in the present invention: a kind of device for quick-detachment damper bolt is provided, can in less space quick-detachment damper bolt.
Technical scheme of the present invention: a kind of device for quick-detachment damper bolt, comprising: drive bolt, driven wheel, slave bolt, driven gear, fixture block, backing plate, cushion block;
Wherein, cushion block is between nut and center piece body, and cushion block upper surface and nut bottom fit tightly, and cushion block lower surface and center piece inner body wall fit tightly;
The plug body portion of bolt and slave bolt is driven to be followed successively by non-cylindrical part, polished rod part, threaded portion from top to bottom; Drive bolt identical with pitch with the large footpath of the threaded portion of slave bolt, but rotation direction is contrary; Drive the non-cylindrical of bolt to partially pass through driven wheel, drive the threaded portion of bolt to screw in the first screwed hole of fixture block, withstand on backing plate upper surface; The non-cylindrical of slave bolt partially passes through driven gear, and the threaded portion of slave bolt screws in the second screwed hole of fixture block, withstands on backing plate upper surface; Drive bolt and driven wheel coaxial rotation, driven wheel and driven gear engaged transmission, driven gear and slave bolt coaxial rotation; Driven wheel and driven gear etc. are large and shape is identical;
Fixture block be provided with one with the U-lag of damper bolt light rod semi-match and a circular groove mated with damper bolt end; The U-lag of fixture block is connected to damper bolt light rod part; The circular groove that damper bolt end part is positioned at fixture block is inner;
First screwed hole of described fixture block is equal to the distance of U-lag center line with the second screwed hole;
Backing plate center has the U-shaped breach with damper bolt light rod semi-match, and described backing plate is enclosed within center piece damper auricle, and backing plate U-shaped breach is connected to damper bolt light rod part.
Beneficial effect of the present invention: the torque axis be applied on driving bolt is become the axial tension by damper bolt centerline by the present invention; structure is simple; there is versatility; can in less space quick-detachment damper bolt; and in the process of dismounting, center piece and damper bolt can be protected not to sustain damage.
Accompanying drawing explanation
Fig. 1 is first structural representation of apparatus of the present invention.
Fig. 2 is second structural representation of apparatus of the present invention.
Detailed description of the invention
Below the present invention is described in further details.
As shown in Figure 1, 2, the present invention is a kind of device for quick-detachment damper bolt, comprising: drive bolt 1, driven wheel 21, slave bolt 4, driven gear 22, fixture block 5, backing plate 6, cushion block 7.
Wherein, cushion block 7 is between nut 10 and center piece 8 body, and cushion block 7 upper surface and nut 10 bottom fit tightly, and cushion block 7 lower surface and center piece 8 inner body wall fit tightly.
The plug body portion of bolt 1 and slave bolt 4 is driven to be followed successively by non-cylindrical part, polished rod part, threaded portion from top to bottom; Drive bolt 1 identical with pitch with the large footpath of the threaded portion of slave bolt 4, but rotation direction is contrary; Drive the non-cylindrical of bolt 1 to partially pass through driven wheel 21, drive the threaded portion of bolt 1 to screw in the first screwed hole of fixture block 5, withstand on backing plate 6 upper surface; The non-cylindrical of slave bolt 4 partially passes through driven gear 22, and the threaded portion of slave bolt 4 screws in the second screwed hole of fixture block 5, withstands on backing plate 6 upper surface; Drive bolt 1 and driven wheel 21 coaxial rotation, driven wheel 21 and driven gear 22 engaged transmission, driven gear 22 and slave bolt 4 coaxial rotation; Driven wheel 21 and driven gear 22 grade are large and shape is identical.
Fixture block 5 be provided with one with the U-lag of damper bolt 9 polished rod semi-match and a circular groove mated with damper bolt 9 termination; The U-lag of fixture block 5 is connected to damper bolt 9 polished rod part; The circular groove that damper bolt 9 end portion is positioned at fixture block 5 is inner.
First screwed hole of described fixture block 5 is equal to the distance of U-lag center line with the second screwed hole.
Backing plate 6 center has the U-shaped breach with damper bolt 9 polished rod semi-match, and described backing plate 6 is enclosed within center piece 8 damper auricle, and the U-shaped breach of backing plate 6 is connected to damper bolt 9 polished rod part.The thickness range of choice of described backing plate 6 is 1-2mm, prevents from driving bolt 1 and slave bolt 4 pairs of center piece 8 damper auricles to cause damage.
Fixture block 5 thickness is selected according to the thickness of nut 10, and the thickness of fixture block 5 is greater than 8mm, ensures the rigidity driving bolt 1 to be connected with fixture block 5 with slave bolt 4.
Further, the device that the present invention is used for quick-detachment damper bolt also comprises guide pad 3, described guide pad 3 has two through holes, described two through holes respectively with the driving polished rod part of the bolt 1 and polished rod adapting part of slave bolt 4, drive the polished rod of bolt 1 to partially pass through a through hole, the polished rod of slave bolt 4 partially passes through another through hole.Guide pad 3 produces distortion for preventing driving bolt 1 and slave bolt 4 to bear lateral load in gear drive process.
During use, between nut 10 and center piece 8 body, cushion block 7 is installed, by relatively rotating of damper bolt 9 and nut 10, nut 10 screws out from damper bolt 9, produce one by the axial force of damper bolt 9 center line simultaneously, the end face of damper bolt 9 is separated with the damper auricle of center piece 8.By backing plate 6, fixture block 5, bolt 1, driven wheel 21, slave bolt 4 and driven gear 22 is driven to be installed on the termination of damper bolt 9.
This device with the center line of damper bolt for benchmark, the termination of bolt is connected to by fixture block, rotating drive bolt, driving gear wheel set (driving gear drive driven gear) and the corresponding rotation of slave bolt, drive bolt identical with the angle that slave bolt rotates.Because drive bolt identical with pitch with the Major Diam of slave bolt, but rotation direction is contrary, so bolt and the center line of slave bolt produce the identical side force in a pair equal and opposite in direction, direction driving, be applied on the damper auricle of center piece by backing plate.Drive the center line of bolt and slave bolt equal to the distance of the center line of damper bolt, so, these two side forces synthesize an axial tension by damper bolt centerline on fixture block, finally be applied on the termination of damping bolt, damper bolt is pulled out from the damper auricle of center piece.
Ordinary circumstance, the quantity of slave bolt can select one, if the axial force that provision for disengagement produces is less than the removal force of damper bolt, the quantity of slave bolt can be increased, such as two or three, the quantity of corresponding increase gear and the position of adjustment driving bolt and slave bolt and damper bolt simultaneously, guarantee effect is transformed into the axial tension by damper bolt centerline to the torque axis driven on bolt.
Claims (2)
1. for a device for quick-detachment damper bolt, it is characterized in that, comprising: drive bolt, driven wheel, slave bolt, driven gear, fixture block, backing plate, cushion block;
Wherein, cushion block is between nut and center piece body, and cushion block upper surface and nut bottom fit tightly, and cushion block lower surface and center piece inner body wall fit tightly;
The plug body portion of bolt and slave bolt is driven to be followed successively by non-cylindrical part, polished rod part, threaded portion from top to bottom; Drive bolt identical with pitch with the large footpath of the threaded portion of slave bolt, but rotation direction is contrary; Drive the non-cylindrical of bolt to partially pass through driven wheel, drive the threaded portion of bolt to screw in the first screwed hole of fixture block, withstand on backing plate upper surface; The non-cylindrical of slave bolt partially passes through driven gear, and the threaded portion of slave bolt screws in the second screwed hole of fixture block, withstands on backing plate upper surface; Drive bolt and driven wheel coaxial rotation, driven wheel and driven gear engaged transmission, driven gear and slave bolt coaxial rotation; Driven wheel and driven gear etc. are large and shape is identical;
Fixture block be provided with one with the U-lag of damper bolt light rod semi-match and a circular groove mated with damper bolt end; The U-lag of fixture block is connected to damper bolt light rod part; The circular groove that damper bolt end part is positioned at fixture block is inner;
First screwed hole of described fixture block is equal to the distance of U-lag center line with the second screwed hole;
Backing plate center has the U-shaped breach with damper bolt light rod semi-match, and described backing plate is enclosed within center piece damper auricle, and backing plate U-shaped breach is connected to damper bolt light rod part.
2. a kind of device for quick-detachment damper bolt as claimed in claim 1, it is characterized in that, also comprise guide pad, described guide pad has two through holes, described two through holes respectively with the driving polished rod part of bolt and the polished rod adapting part of slave bolt, drive the polished rod of bolt to partially pass through a through hole, the polished rod of slave bolt partially passes through another through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310646132.7A CN104690678B (en) | 2013-12-04 | 2013-12-04 | A kind of device for fast quick-detach damper bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310646132.7A CN104690678B (en) | 2013-12-04 | 2013-12-04 | A kind of device for fast quick-detach damper bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104690678A true CN104690678A (en) | 2015-06-10 |
| CN104690678B CN104690678B (en) | 2016-09-07 |
Family
ID=53338428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310646132.7A Active CN104690678B (en) | 2013-12-04 | 2013-12-04 | A kind of device for fast quick-detach damper bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104690678B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207801A (en) * | 2020-03-13 | 2020-05-29 | 江苏伸辰智能仪器有限公司 | High-strength electromagnetic water meter |
| CN112959253A (en) * | 2021-02-17 | 2021-06-15 | 崔联 | Electric tool for screwing screw |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101518896A (en) * | 2009-03-30 | 2009-09-02 | 赵士华 | Adjustable combined detacher |
| KR20100000139U (en) * | 2008-06-26 | 2010-01-06 | 현대제철 주식회사 | A Jig for Assembling a Gear Coupling |
| CN201833164U (en) * | 2010-10-09 | 2011-05-18 | 中国人民解放军装甲兵技术学院 | Double-shaft pitch-variable thread knob mechanism |
| CN202129620U (en) * | 2011-05-11 | 2012-02-01 | 泸州职业技术学院 | Bolt dismounting device |
| CN202144013U (en) * | 2011-05-30 | 2012-02-15 | 昆明学院 | Double-nut synchronous installing and dismounting device |
-
2013
- 2013-12-04 CN CN201310646132.7A patent/CN104690678B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100000139U (en) * | 2008-06-26 | 2010-01-06 | 현대제철 주식회사 | A Jig for Assembling a Gear Coupling |
| CN101518896A (en) * | 2009-03-30 | 2009-09-02 | 赵士华 | Adjustable combined detacher |
| CN201833164U (en) * | 2010-10-09 | 2011-05-18 | 中国人民解放军装甲兵技术学院 | Double-shaft pitch-variable thread knob mechanism |
| CN202129620U (en) * | 2011-05-11 | 2012-02-01 | 泸州职业技术学院 | Bolt dismounting device |
| CN202144013U (en) * | 2011-05-30 | 2012-02-15 | 昆明学院 | Double-nut synchronous installing and dismounting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207801A (en) * | 2020-03-13 | 2020-05-29 | 江苏伸辰智能仪器有限公司 | High-strength electromagnetic water meter |
| CN112959253A (en) * | 2021-02-17 | 2021-06-15 | 崔联 | Electric tool for screwing screw |
| CN112959253B (en) * | 2021-02-17 | 2024-02-27 | 杭州伊西威威网络科技有限公司 | Electric tool for screwing screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104690678B (en) | 2016-09-07 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |