CN2813222Y - Hand-held hydraulic nut tightener - Google Patents
Hand-held hydraulic nut tightener Download PDFInfo
- Publication number
- CN2813222Y CN2813222Y CN 200520051362 CN200520051362U CN2813222Y CN 2813222 Y CN2813222 Y CN 2813222Y CN 200520051362 CN200520051362 CN 200520051362 CN 200520051362 U CN200520051362 U CN 200520051362U CN 2813222 Y CN2813222 Y CN 2813222Y
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- CN
- China
- Prior art keywords
- hydraulic
- nut
- hand
- gear
- hydraulic cylinder
- 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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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a kind of machinery repair tool, specifically is meant the hand-operated tools that a kind of degree of tightness nut is used.It is that two piston fore-sets are housed in a hydraulic cylinder, two tooth bars and a gear are equipped with in the upper end of hydraulic cylinder, a hydraulic valve and fuel feed hole are equipped with in the lower end of hydraulic cylinder, and hydraulic valve control gear velocity of rotation is two grades of speeds, and gear shaft two external part forges the quadrate joint.The utility model utilizes the hydraulic jack principle, and hydraulic hand-pump is united use with flexible pipe and hydraulic nut tightener, and the operating point of turning round nut is separated with manual stressed two places, is fit to all places and uses.It is big to open torsional moment, and stress balance can be measured the torque value of bolt in being turned round process, in light weight, volume is little, easy to carry, need not other power, can produce very big moment of torsion, so that significantly reduce the phenomenon that twists off bolt and turn round motionless nut.
Description
Technical field
The utility model relates to a kind of machinery repair tool, specifically is meant the hand-operated tools that a kind of degree of tightness nut is used.
Background technology
Existing pneumatic, electronic nut degree of tightness machine, volume is big and heavy, and only suitable fixed-site uses.When some occasions such as dismounting workpiece, may can not use because being subjected to size restrictions.And the moment of torsion when existing instrument can not be measured the bolt twisting.
The utility model content
The technical problem that the utility model need solve is: at the little weak point of the prior art scope of application, and provide a kind of appearance and size little, in light weight, can with the matching used hand-hydraulic instrument of existing box spanner.
The technical solution that the utility model adopts: two piston fore-sets are housed in a hydraulic cylinder, and two tooth bars and a gear are equipped with in the upper end of cylinder, and a hydraulic valve and fuel feed hole are equipped with in the lower end of cylinder.Hydraulic valve can be controlled the moving speed of gear rotation, is divided into two grades of speeds.Gear shaft two external part forges the quadrate joint and can insert in the sleeve square hole, during jack panel, with outer end square joint, during loose nut, with inner square joint.
The beneficial effects of the utility model: the utility model uses with a hydraulic hand-pump and hydraulic pressure top UNICOM in use.Mix up hydraulic pressure top gear and hydraulic hand-pump valve.Start the hydraulic hand-pump action bars, then the piston fore-set rises, and promotes tooth bar to top offset, and the rack drives gear rotates, and sleeve rotates with gear, just nut is tightened or back-outs, and another tooth bar compresses spring to bottom offset simultaneously.Open the hydraulic hand-pump valve, the spring return promotes tooth bar to top offset driven gear backward rotation, promotes another tooth bar to bottom offset, the downward return of propelling piston fore-set.Hydraulic oil turns back in the hydraulic hand-pump.An oil pressure gauge is equipped with at the oil-out place on manual pump in addition, is converted into nut required torque value when tightening by the oil pressure gauge form.When with slow shelves,, when with fast shelves, press inner ring circumference scale by outer ring circumference scale.The moment of torsion that has reached in the time of in use can measuring the nut degree of tightness.The utility model utilizes the hydraulic jack principle, and hydraulic hand-pump is united use with flexible pipe and hydraulic nut tightener, and the operating point of turning round nut is separated with manual stressed two places, is fit to all places and uses.It is big to open torsional moment, and stress balance can be measured the torque value of bolt in being turned round process, in light weight, volume is little, easy to carry, need not other power, can produce very big moment of torsion, so that significantly reduce the phenomenon that twists off bolt and turn round motionless nut.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view among Fig. 1;
Fig. 3 is application example figure of the present utility model.
The figure number explanation:
1, fuel feed hole seat 2, hydraulic valve stem
3, slow shelves fuel feed hole 4, valve base
5, fast shelves fuel feed hole 6, fuel tank oil-in
7, cylinder sleeve 8, big piston fore-set
9, valve piston fore-set 10, rack tube
11, following tooth bar 12, spring
13, gear 14, upper rack
15, square knuckle 16, release spill port
17, operating grip 18, hydralic pressure gauge pointer
19, fast shelves moment of torsion form 20, slow shelves moment of torsion form
21, hydraulic hand-pump valve
The specific embodiment
Referring to Fig. 1 and Fig. 2: big piston fore-set 8, valve piston fore-set 9 are packed in the cylinder sleeve 7, valve base 4, rack tube 10 are tightened on cylinder sleeve two captacula mouths, again spring 12 is packed on the valve base column.Upper rack 14, following tooth bar 11, gear 13, hydraulic valve stem 2, fuel feed hole seat 1 are assemblied in respectively on rack tube 10 and the valve base 4.Connect fuel feed hole seat 1, release spill port 16 respectively with two hydraulic hose one ends, the other end is connected hydraulic hand-pump oil-out and fuel tank oil-in respectively, the square joint 15 of gear shaft is inserted in the sleeve square hole, package nut, mix up valve rod 2 to fast shelves or slow gear and put.When with fast shelves, hydraulic oil enters fast shelves fuel feed hole 5 from fuel feed hole seat 1, hydraulic oil jack-up roof jack 8, and promotion tooth bar 11 down rotates gear 13 to top offset, just can tighten or back-out nut.Gear promotes upper rack 14, compression spring 12 simultaneously.After nut turned to certain position, with the hydraulic hand-pump valve open, compression spring return promoted on the tooth bar 14, driven gear 13 counter-rotatings, and promoting down, tooth bar 11 makes piston fore-set return to bottom offset.In like manner: when hydraulic valve stem 2 was transferred to slow grade, hydraulic oil entered slow shelves fuel feed hole 3 from fuel feed hole seat 1, and a fast shelves fuel feed hole 5 is closed, and hydraulic oil promotes valve piston fore-set 9 and makes progress with big piston fore-set 8 to top offset.Rack-and-pinion will equally be worked as previously mentioned, and this is a working cycles.Circulation just can tighten degree to specification requirement to nut several times so repeatedly, all available the utility model degree of tightness of the nut nut device that can not tighten or back-out with other spanner.Because of having release spill port 16 at the oil cylinder upside, when the piston fore-set ejected certain-length, hydraulic oil turned back in the hydraulic hand-pump fuel tank from release spill port 16 again, and pushing tow tooth bar, gear failure play the protection rack-and-pinion.
Referring to Fig. 3: with the logical fuel feed hole seat 1 of hydraulic hose one termination, the other end is connected the oil-out that hydraulic hand-pump is equipped with oil pressure gauge; With the logical release spill port 16 of another root flexible pipe one termination, the other end connects hydraulic hand-pump fuel tank oil-in 6.Then square knuckle 15 is inserted in the sleeve square opening, mixed up hydraulic valve stem 2, mix up hydraulic hand-pump valve 21 again to fast shelves or slow shelves.Start hydraulic hand-pump operating grip 17, just can tighten or back-out nut.When tightening nut, hydralic pressure gauge pointer 18 can be observed, when turning round nut, the torque value size form 19 that converts good can be seen with fast shelves; When turning round nut, can see the torque value size form 20 that converts good with slow shelves.Can judge whether nut is turned round on the table values conforms with specification requirement, and turning round bad time as the nut stripped thread also can be it can be seen from the table, and its pointer 18 rests on a certain position constant.In addition, can observe spring 12 compression positions, also the maximum position that pushed up of piston fore-set as can be known.
Claims (1)
1, a kind of hand-hydraulic nut tightener, it is characterized in that in a hydraulic cylinder, being equipped with two piston fore-sets, two tooth bars and a gear are equipped with in the upper end of hydraulic cylinder, a hydraulic valve and fuel feed hole are equipped with in the lower end of hydraulic cylinder, hydraulic valve control gear velocity of rotation is two grades of speeds, and gear shaft two external part forges the quadrate joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051362 CN2813222Y (en) | 2005-07-13 | 2005-07-13 | Hand-held hydraulic nut tightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051362 CN2813222Y (en) | 2005-07-13 | 2005-07-13 | Hand-held hydraulic nut tightener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2813222Y true CN2813222Y (en) | 2006-09-06 |
Family
ID=36948308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520051362 Expired - Fee Related CN2813222Y (en) | 2005-07-13 | 2005-07-13 | Hand-held hydraulic nut tightener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2813222Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411721A (en) * | 2013-07-26 | 2013-11-27 | 太仓中博铁路紧固件有限公司 | Bolt torque detection device |
| CN104772740A (en) * | 2015-04-10 | 2015-07-15 | 北京首钢股份有限公司 | Bolt fastening tool and fastening method |
| US12017332B2 (en) | 2020-03-25 | 2024-06-25 | Milwaukee Electric Tool Corporation | Bolt tensioning tool |
-
2005
- 2005-07-13 CN CN 200520051362 patent/CN2813222Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411721A (en) * | 2013-07-26 | 2013-11-27 | 太仓中博铁路紧固件有限公司 | Bolt torque detection device |
| CN103411721B (en) * | 2013-07-26 | 2015-01-21 | 太仓中博铁路紧固件有限公司 | Bolt torque detection device |
| CN104772740A (en) * | 2015-04-10 | 2015-07-15 | 北京首钢股份有限公司 | Bolt fastening tool and fastening method |
| CN104772740B (en) * | 2015-04-10 | 2016-08-24 | 北京首钢股份有限公司 | A kind of bolt-tightening tool and fastening method |
| US12017332B2 (en) | 2020-03-25 | 2024-06-25 | Milwaukee Electric Tool Corporation | Bolt tensioning tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060906 |