CN2493361Y - Double-head screw dismounting device - Google Patents
Double-head screw dismounting device Download PDFInfo
- Publication number
- CN2493361Y CN2493361Y CN 01238315 CN01238315U CN2493361Y CN 2493361 Y CN2493361 Y CN 2493361Y CN 01238315 CN01238315 CN 01238315 CN 01238315 U CN01238315 U CN 01238315U CN 2493361 Y CN2493361 Y CN 2493361Y
- Authority
- CN
- China
- Prior art keywords
- stud
- hole
- folding body
- sleeve
- zoarium
- 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
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- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
A bolt detacher with double heads is provided with a cylindrical open zoarium, the central retractable face of which is a vertical profile. The peripheral surface of the open zoarium is provided with an external spline. The inner hole of the open zoarium is a ladder hole. The ladder hole with larger diameter is provided with the inner screw, which is combined with the double head bolt screw. The ladder hole with smaller diameter is a light hole, which is combined with the rod of the double head bolt. The two ends of the peripheral surface in the open zoarium are provided with an upper tightening ring, a lower tightening ring and a sleeve tube. The peripheral surface of the inner hole in the sleeve tube is provided with an inner spline combined with the peripheral surface of the open zoarium. The utility model has simple structure and the utility model is convenient in application.
Description
Novel a kind of specific purpose tool that overhauls steam turbine, the particularly a kind of stud remover that the stud at steam turbine high-pressure cylinder position is dismantled of relating to of this reality.
During power plant maintenance steam turbine, for the unusual difficulty of the dismounting of the stud at high pressure cylinder position, because the residing environment of the stud at this position is under 500-600 degree centigrade condition, after it used a period of time, dismounting was just very difficult.In the prior art, it as the patent No. 99239402.3 the described a kind of stud remover of Chinese patent, comprise overcoat, retainer, the wedge-like block teeth, wherein, overcoat endoporus side face is provided with a plurality of arc concave curved surface grooves, the retainer side face is provided with plurality of windows and first groove of opening ring-spring is housed, and be placed in the overcoat, each wedge-like block teeth has an outer surface and an inner toothed surface of arc, be installed in the window of retainer, when the rotation of the relative retainer of overcoat, the concave curved surface groove relative displacement of the outer surface of wedge-like block teeth and overcoat and entering in the concave curved surface groove, opening ring-spring one makes the wedge-like block teeth be returned to the origin-location.Its weak point is: complex structure, make difficulty, and the cost height uses inconvenient.
The purpose of this utility model is at the deficiencies in the prior art, in conjunction with the design feature of steam turbine high-pressure cylinder position stud, has proposed stud remover a kind of simple in structure, easy to use.
The purpose of this utility model is achieved through the following technical solutions, a kind of stud remover, be characterized in: it is provided with a cylindricality folding body, the center folding face of folding body is a longitudinal profile, the outer peripheral face of folding body is provided with external splines, folding body endoporus is a ladder hole, the part that the ladder hole diameter is big is provided with the internal thread that cooperates with stud bolt thread, the unthreaded hole of part that the ladder hole diameter is little for matching with the tightening latch of stud, the both ends of the external side face of folding are provided with and tighten ring, following dead ring, it also is provided with sleeve, and sleeve endoporus side face is provided with the internal spline that cooperates with the external side face of folding.During use two folding bodies are combined on the bolt, upper and lower dead ring are contained in respectively on the folding body, the folding body is fixed on the bolt, at last jacket casing on the folding body.Under external force, left-handed sleeve, because sleeve is connected by spline with the folding body, clasp nut rotates immediately, and rises along the screw thread of stud, when the screw thread of folding body endoporus with after the shaft shoulder of unthreaded hole junction and stud contacts, clasp nut stops to rise, external force continuation effect, stud is loosening, until disassembling.
The purpose of this utility model can also be achieved through the following technical solutions, and folding body screwed hole and the step of unthreaded hole junction are set to the fillet that matches with tightening latch junction shaft shoulder fillet with stud bolt thread.Fillet cooperates with the shaft shoulder place fillet of stud, during dismounting, under external force, form horizontal component at shaft shoulder place, make two clasp nuts expand outwardly, because the constraint of sleeve makes bolt, clasp nut, sleeve be expanded into a rigid body, under external force continuation effect, until stud is unloaded down.This structure is particularly useful for the dismounting of the stud at steam turbine high-pressure cylinder position.
The purpose of this utility model can also be achieved through the following technical solutions, and the top of sleeve is provided with square hole.Square hole can connect with pneumatic extracting tool.Make dismounting more convenient.
The purpose of this utility model can also be achieved through the following technical solutions, and the ring wall of following dead ring is provided with stop hole, is provided with latch in the stop hole.Latch can prevent down that dead ring slides.
The utility model compared with prior art adopts the screwed hole of folding body and the threads engaged of stud, and unthreaded hole cooperates with tightening latch, and sleeve is connected with the folding body by spline, and turnbarrel is pulled down stud, and it is simple in structure, and is easy to use.Folding body screwed hole and the step of the junction of unthreaded hole are set to the fillet that the screw thread with stud matches with the tightening latch junction shaft shoulder.Fillet cooperates with the shaft shoulder place fillet of stud, during dismounting, makes bolt, clasp nut, sleeve be expanded into a rigid body.This structure is particularly useful for the dismounting of the stud at steam turbine high-pressure cylinder position.
Fig. 1 is an assembling cut-away view of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to cut-away view.
Embodiment one, the specific embodiment of the present utility model as shown in the figure, a kind of stud remover, it is provided with a cylindricality folding body 6, folding body 6 is made up of two splits of vertically cutting open along folding body central axis, the center folding face of folding body 6 is a longitudinal profile, the outer peripheral face of folding body 6 is provided with external splines, folding body 6 endoporus are ladder hole, the part that the ladder hole diameter is big is provided with the internal thread with stud 5 threaded engagement, the unthreaded hole of part that the ladder hole diameter is little for matching with the tightening latch of stud 5, the both ends of folding body 6 outer peripheral faces are provided with and tighten ring 7, following dead ring 4, it also is provided with sleeve 8, and sleeve 8 endoporus side faces are provided with the internal spline that cooperates with folding body 6 outer peripheral faces.Folding body 6 screwed holes and the step of unthreaded hole junction are set to the fillet that matches with tightening latch junction shaft shoulder fillet with stud 5 screw threads.This structure is particularly useful for the dismounting of the stud at steam turbine high-pressure cylinder position.The utility model is simple in structure, and is easy to use.
Embodiment two, and in the above embodiments, the top of sleeve 8 is provided with square hole, and square hole can connect with pneumatic extracting tool, make dismounting more convenient.The ring wall of following dead ring 4 is provided with stop hole, is provided with latch in the stop hole, and that latch comprises is stifled 3, spring 2, steel ball 1, and folding body 6 is provided with the groove that cooperates with the latch steel ball with following locating snap ring 4 cooperation places.Latch can prevent down that dead ring slides.
Claims (4)
1. stud remover, it is characterized in that: it is provided with a cylindricality folding body (6), the center folding face of folding body (6) is a longitudinal profile, the outer peripheral face of folding body (6) is provided with external splines, folding body (6) endoporus is a ladder hole, the part that the ladder hole diameter is big is provided with the internal thread with stud (5) threaded engagement, the unthreaded hole of part that the ladder hole diameter is little for matching with the tightening latch of stud (5), the both ends of folding body (6) outer peripheral face are provided with and tighten ring (7), following dead ring (4), it also is provided with sleeve (8), and sleeve (8) endoporus side face is provided with the internal spline that cooperates with folding body (6) outer peripheral face.
2. stud remover according to claim 1 is characterized in that: the fillet that folding body (6) screwed hole is set to the step of unthreaded hole junction and stud (5) screw thread matches with tightening latch junction shaft shoulder fillet.
3. stud remover according to claim 1 is characterized in that: the top of sleeve (8) is provided with square hole.
4. stud remover according to claim 1 is characterized in that: the ring wall of following dead ring (4) is provided with stop hole, is provided with latch in the stop hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01238315 CN2493361Y (en) | 2001-06-13 | 2001-06-13 | Double-head screw dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01238315 CN2493361Y (en) | 2001-06-13 | 2001-06-13 | Double-head screw dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2493361Y true CN2493361Y (en) | 2002-05-29 |
Family
ID=33650964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01238315 Expired - Fee Related CN2493361Y (en) | 2001-06-13 | 2001-06-13 | Double-head screw dismounting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2493361Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890699A (en) * | 2010-05-22 | 2010-11-24 | 东方电气集团东方汽轮机有限公司 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
| CN102267119A (en) * | 2011-07-12 | 2011-12-07 | 浙江华电器材检测研究所 | Device for quickly disassembling torsional shearing type bolt |
| CN102513976A (en) * | 2011-12-14 | 2012-06-27 | 合肥通用机械研究院 | Torque self-balancing hydraulic bolt tightening device and tightening method |
| CN103934799A (en) * | 2014-04-25 | 2014-07-23 | 中国十七冶集团有限公司 | Quick assembling and disassembling device of two gears |
| CN108161835A (en) * | 2017-12-28 | 2018-06-15 | 辽宁三三工业有限公司 | A kind of studs extracting tool |
| CN111195878A (en) * | 2020-01-10 | 2020-05-26 | 中国航发沈阳发动机研究所 | Engine hole probe plug dismounting tool |
-
2001
- 2001-06-13 CN CN 01238315 patent/CN2493361Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890699A (en) * | 2010-05-22 | 2010-11-24 | 东方电气集团东方汽轮机有限公司 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
| CN101890699B (en) * | 2010-05-22 | 2012-07-04 | 东方电气集团东方汽轮机有限公司 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
| CN102267119A (en) * | 2011-07-12 | 2011-12-07 | 浙江华电器材检测研究所 | Device for quickly disassembling torsional shearing type bolt |
| CN102513976A (en) * | 2011-12-14 | 2012-06-27 | 合肥通用机械研究院 | Torque self-balancing hydraulic bolt tightening device and tightening method |
| CN102513976B (en) * | 2011-12-14 | 2014-01-29 | 合肥通用机械研究院 | Fastening method adopting torque self-balancing hydraulic bolt tightening device |
| CN103934799A (en) * | 2014-04-25 | 2014-07-23 | 中国十七冶集团有限公司 | Quick assembling and disassembling device of two gears |
| CN108161835A (en) * | 2017-12-28 | 2018-06-15 | 辽宁三三工业有限公司 | A kind of studs extracting tool |
| CN108161835B (en) * | 2017-12-28 | 2023-10-13 | 辽宁三三工业有限公司 | Double-end stud dismounting tool |
| CN111195878A (en) * | 2020-01-10 | 2020-05-26 | 中国航发沈阳发动机研究所 | Engine hole probe plug dismounting tool |
| CN111195878B (en) * | 2020-01-10 | 2021-10-22 | 中国航发沈阳发动机研究所 | Engine hole probe plug dismounting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |