CN201102227Y - Integral hydraulic drawing device - Google Patents
Integral hydraulic drawing device Download PDFInfo
- Publication number
- CN201102227Y CN201102227Y CNU2007200740232U CN200720074023U CN201102227Y CN 201102227 Y CN201102227 Y CN 201102227Y CN U2007200740232 U CNU2007200740232 U CN U2007200740232U CN 200720074023 U CN200720074023 U CN 200720074023U CN 201102227 Y CN201102227 Y CN 201102227Y
- Authority
- CN
- China
- Prior art keywords
- nut
- support set
- bolt
- hydraulic cylinder
- piston
- 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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Classifications
-
- 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
- B25B29/00—Accessories
- B25B29/02—Bolt tensioners
Abstract
The utility model provides an integral type hydraulic elongator which comprises a support bushing, a retaining plate, a hydraulic cylinder, a piston, a tightening nut and a bolt to be drawn, etc; a nut sleeve is arranged on the support bushing through an elastic retaining ring and a bearing to form a part; in addition an automatic resetting device, a gear locking device and a travel indicator are also provided; the support bushing is arranged on the surface of the work piece to be connected; when the high-pressure oil is injected into the oil inlet of the elongator, a clearance is formed between the nut on the bolt to be drawn and the work piece to be connected; a clamp axis is rotated to drive a pinion, a bull gear and a locknut of the nut sleeve, which can realize the pre-tightening of the bolt to be drawn; after the high pressure oil in the hydraulic cylinder of the elongator is discharged, the tightening nut is pulled reversely so as to make the piston reset under the action of the return spring. The beneficial effect of the integral type hydraulic elongator is that the structure of the elongator is more compact; the operation is more convenient; the work efficiency is improved; and the entire drawing course can be observed and controlled through the travel indicator.
Description
[technical field]
The utility model relates to Machine Design manufacturing technology field, specifically, is a kind of compact conformation, easy to operate integral hydraulic stretcher.
[background technology]
Hydraulic elongator is mainly used in the installation of main equipment, large pressurized vessel.Its operation principle is, bolt to be locked is stretched by the piston in the hydraulic elongator, screws nut then, thereby realizes the purpose of bolt pretension, and it has replaced and traditional screws the method that nut is realized pretension with moving bar.
Existing hydraulic elongator is made up of support set, nut sleeve, hydraulic cylinder, piston and tightening nut etc., does not have resetting means and gear locking device and travel indicator, the operation more complicated, and operating efficiency is not high.
[utility model content]
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of integral hydraulic stretcher that has resetting means, gear locking device and travel indicator is provided, and makes the more compact structure of stretcher, more convenient operation.
For achieving the above object, the utility model integral hydraulic stretcher contains support set, gripper shoe, hydraulic cylinder, piston, tightening nut, the bolt that is stretched, nut, circlip, nut sleeve and bearing, it is characterized in that, nut sleeve is installed in parts of formation on the support set by circlip and bearing, in addition, also be provided with automatic reset device, gear locking device and travel indicator;
Described automatic reset device comprises lower supporting plate, back-moving spring and upper backup pad; Lower supporting plate, back-moving spring and upper backup pad are set on support set, between upper backup pad and lower supporting plate hydraulic cylinder are set, piston is installed in the hydraulic cylinder, and tightening nut band nut sleeve pull bar one end is installed on the piston, and the other end screws in the bolt that is stretched;
Described gear locking device comprises lock shaft, tooth rest, pinion, gear wheel, circlip and bearing; Lock shaft and pinion are installed on the tooth rest, and tooth rest is installed on the support set; Gear wheel be installed on support set and the nut sleeve and and pinion, circlip and bearing are installed on the support set, nut sleeve can freely be rotated with respect to support set.
Described travel indicator is arranged on the cylinder body, pastes pointer on gripper shoe, is provided with scale in the side of hydraulic cylinder.
The utility model includes at least four back-moving springs.
The course of work of the utility model integral hydraulic stretcher is:
Support set is placed in is connected surface of the work, after the oil-in to the integral hydraulic stretcher injects hydraulic oil, the bolt that is stretched is stretched, be stretched on the bolt nut and be connected and occurred a slit between the workpiece, at this moment, the rotation lock mandrel drives pinion, gear wheel and nut sleeve locking nut, just can control the stretching of the bolt that is stretched, the be stretched pretension of bolt of realization.
Emit the hydraulic oil in the integral hydraulic stretcher hydraulic cylinder, unclamp the gear locking device, the opposite spin tightening nut, the bolt that is stretched shrinks, and gets back to initial position at the effect lower piston of back-moving spring.People can observe or the supervision drawing process by travel indicator in whole drawing process.
Good effect of the present utility model is, adopts resetting means, gear locking and travel indicator, makes the more compact structure of stretcher, and more convenient operation has improved operating efficiency.
[description of drawings]
Accompanying drawing is the structural representation of the utility model integral hydraulic stretcher.
Sign among the figure is respectively:
1, back-moving spring, 2, upper backup pad, 3, piston, 4, hydraulic cylinder, 5, tightening nut, 6, travel indicator, 7, lock shaft, 8, tooth rest, 9, pinion, 10, gear wheel, 11, the bolt that is stretched, 12, nut, 13, circlip, 14, nut sleeve, 15, bearing, 16, support set, 17, lower supporting plate, 18, be connected workpiece.
[specific embodiment]
Provide the specific embodiment of the utility model integral hydraulic stretcher below in conjunction with accompanying drawing.
The utility model integral hydraulic stretcher mainly contains support set 16, gripper shoe, hydraulic cylinder 4, piston 3, tightening nut 5, the bolt 11 that is stretched, nut 12, circlip 13, nut sleeve 14 and bearing 15, and automatic reset device, gear locking device and travel indicator 6; Automatic reset device comprises lower supporting plate 17, back-moving spring 1 and upper backup pad 2; The gear locking device comprises lock shaft 7, tooth rest 8, pinion 9, gear wheel 10, circlip 13 and bearing 15.
Upper backup pad 2 is installed on the piston 3, and lower supporting plate 17 is installed on the hydraulic cylinder 4; The back-moving spring 1 that is contained on upper backup pad 2 and the lower supporting plate 17 is provided with four altogether, and after the hydraulic oil in discharge liquid cylinder pressure 4, it can return back to original position with piston 3; Lock shaft 7 and pinion 9 are installed on the tooth rest on 8, and tooth rest 8 is installed on the support set 16; Nut sleeve 14 is installed on the nut 12, and gear wheel 10 is installed on support set 16 and the nut sleeve 14, and meshes with pinion 9; Nut sleeve 14 is installed in parts of formation on the support set 16 by circlip 13 and bearing 15, makes nut sleeve 14 can freely rotate with respect to support set 16.Travel indicator is arranged on the cylinder body, pastes pointer on gripper shoe, is provided with scale in two sides of hydraulic cylinder 4, and the travel indicator 6 that is contained on the upper backup pad 2 can accurately indicate drawing process.
Support set 16 is placed in is connected workpiece 18 surfaces, hydraulic cylinder 4 is installed on the support set 16, and piston 3 is installed in the hydraulic cylinder 4, and an end of tightening nut 5 is installed on the piston 3, and its other end is screwed on the bolt 11 that is stretched; After injecting hydraulic oil, under the effect of piston 3,, make the nut 12 on the bolt 11 that is stretched and be connected an appearance slit (equaling the stroke of hydraulic cylinder 4) between the workpiece 18 by tightening nut 5 bolt 11 that is stretched that stretches to the oil-in of hydraulic cylinder 4; At this moment, rotation lock mandrel 7 can drive pinion 9, gear wheel 10 and nut sleeve 14 nuts 12, the stretching of bolt 11 thereby realization is stretched.
After the bolt 11 that is stretched stretched, if the hydraulic oil in the discharge liquid cylinder pressure 4, opposite spin tightening nut 5 made it to return initial position, and under the effect of back-moving spring 1, piston 3 is also got back to initial position.
People can observe or the supervision drawing process by travel indicator 6 in whole drawing process.
Claims (3)
1, a kind of integral hydraulic stretcher, contain support set (16), gripper shoe, hydraulic cylinder (4), piston (3), tightening nut (5), the bolt that is stretched (11), nut (12), circlip (13), nut sleeve (14) and bearing (15), it is characterized in that, nut sleeve (14) is installed in support set (16) by circlip (13) and bearing (14) goes up parts of formation, in addition, also be provided with automatic reset device, gear locking device and travel indicator (6);
Described automatic reset device comprises lower supporting plate (17), back-moving spring (1) and upper backup pad (2); Lower supporting plate (17), back-moving spring (1) and upper backup pad (2) are set on support set (16), between upper backup pad (2) and lower supporting plate (17), hydraulic cylinder (4) is set, piston (3) is installed in the hydraulic cylinder (4), tightening nut (5) band nut sleeve pull bar one end is installed on the piston (3), and the other end screws in the bolt (11) that is stretched;
Described gear locking device comprises lock shaft (7), tooth rest (8), pinion (9), gear wheel (10), circlip (13) and bearing (15); Lock shaft (7) and pinion (9) are installed on the tooth rest (8), and tooth rest (8) is installed on the support set (16); Gear wheel (10) is installed in support set (16) and nut sleeve (14) upward and with pinion (9) meshes, and circlip (13) and bearing (15) are installed on the support set (16), and nut sleeve (14) can freely be rotated with respect to support set (16).
2, integral hydraulic stretcher according to claim 1 is characterized in that, described travel indicator (6) is arranged on the cylinder body, pastes pointer on gripper shoe, is provided with scale in the side of hydraulic cylinder (4).
3, integral hydraulic stretcher according to claim 1 is characterized in that, includes at least four back-moving springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740232U CN201102227Y (en) | 2007-08-23 | 2007-08-23 | Integral hydraulic drawing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200740232U CN201102227Y (en) | 2007-08-23 | 2007-08-23 | Integral hydraulic drawing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201102227Y true CN201102227Y (en) | 2008-08-20 |
Family
ID=39949245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200740232U Expired - Fee Related CN201102227Y (en) | 2007-08-23 | 2007-08-23 | Integral hydraulic drawing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201102227Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189400A (en) * | 2010-02-18 | 2011-09-21 | Skf公司 | Rod tensioning device |
| CN102267050A (en) * | 2011-01-25 | 2011-12-07 | 南通高盛机械制造有限公司 | Hydraulic pretightening device for automatic regroup bolts |
| CN103448288A (en) * | 2013-08-20 | 2013-12-18 | 沃得精机(中国)有限公司 | Hydraulic pull rod tensioning device for press |
| CN104053525A (en) * | 2012-02-09 | 2014-09-17 | 瓦锡兰芬兰有限公司 | Pretensioning tool and method for tightening a nut |
| CN109048314A (en) * | 2018-10-15 | 2018-12-21 | 扬州市神力吊具制造有限公司 | A kind of self-adaptive hydraulic stretcher |
| CN109421015A (en) * | 2017-08-28 | 2019-03-05 | 约尔格·霍曼 | The method of make-up or fastening for having been recorded to threaded connector |
| CN109623352A (en) * | 2018-12-20 | 2019-04-16 | 华中科技大学 | A kind of tools for bolts ' pretension device having high bonding strength characteristic |
| CN110900506A (en) * | 2019-11-22 | 2020-03-24 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN113103190A (en) * | 2021-04-30 | 2021-07-13 | 武汉工程大学 | Nut screwing tool and pulling type nut self-screwing equipment |
-
2007
- 2007-08-23 CN CNU2007200740232U patent/CN201102227Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189400A (en) * | 2010-02-18 | 2011-09-21 | Skf公司 | Rod tensioning device |
| CN102189400B (en) * | 2010-02-18 | 2015-01-28 | Skf公司 | Rod tensioning device |
| CN102267050A (en) * | 2011-01-25 | 2011-12-07 | 南通高盛机械制造有限公司 | Hydraulic pretightening device for automatic regroup bolts |
| CN102267050B (en) * | 2011-01-25 | 2013-04-03 | 南通高盛机械制造有限公司 | Hydraulic pretightening device for automatic regroup bolts |
| CN104053525B (en) * | 2012-02-09 | 2016-08-17 | 瓦锡兰芬兰有限公司 | Pretension instrument and the method for fastening nut |
| CN104053525A (en) * | 2012-02-09 | 2014-09-17 | 瓦锡兰芬兰有限公司 | Pretensioning tool and method for tightening a nut |
| CN103448288B (en) * | 2013-08-20 | 2015-09-02 | 沃得精机(中国)有限公司 | Press machine draw bar fluid-pressure straining device |
| CN103448288A (en) * | 2013-08-20 | 2013-12-18 | 沃得精机(中国)有限公司 | Hydraulic pull rod tensioning device for press |
| CN109421015A (en) * | 2017-08-28 | 2019-03-05 | 约尔格·霍曼 | The method of make-up or fastening for having been recorded to threaded connector |
| CN109048314A (en) * | 2018-10-15 | 2018-12-21 | 扬州市神力吊具制造有限公司 | A kind of self-adaptive hydraulic stretcher |
| CN109048314B (en) * | 2018-10-15 | 2024-02-27 | 扬州市神力吊具制造有限公司 | Self-adaptive hydraulic stretcher |
| CN109623352A (en) * | 2018-12-20 | 2019-04-16 | 华中科技大学 | A kind of tools for bolts ' pretension device having high bonding strength characteristic |
| CN110900506A (en) * | 2019-11-22 | 2020-03-24 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN110900506B (en) * | 2019-11-22 | 2021-05-18 | 武汉理工大学 | High-precision hydraulic stretcher |
| CN113103190A (en) * | 2021-04-30 | 2021-07-13 | 武汉工程大学 | Nut screwing tool and pulling type nut self-screwing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai Yuansheng Machinery Electrical Manufacturing Co., Ltd. Assignor: Shanghai Dianji University Contract fulfillment period: 2009.5.8 to 2014.5.7 Contract record no.: 2009310000108 Denomination of utility model: Integral hydraulic drawing device Granted publication date: 20080820 License type: Exclusive license Record date: 20090701 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.5.8 TO 2014.5.7; CHANGE OF CONTRACT Name of requester: SHANGHAI YUANSHENG MACHINERY ELECTRIC MANUFACTURIN Effective date: 20090701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080820 Termination date: 20150823 |
|
| EXPY | Termination of patent right or utility model |