CN200957544Y - Bolt hydraulic stretcher - Google Patents
Bolt hydraulic stretcher Download PDFInfo
- Publication number
- CN200957544Y CN200957544Y CN 200620126360 CN200620126360U CN200957544Y CN 200957544 Y CN200957544 Y CN 200957544Y CN 200620126360 CN200620126360 CN 200620126360 CN 200620126360 U CN200620126360 U CN 200620126360U CN 200957544 Y CN200957544 Y CN 200957544Y
- Authority
- CN
- China
- Prior art keywords
- piston
- bolt
- stretcher
- oil cylinder
- hydraulic elongator
- 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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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a hydraulic bolt stretcher which can fasten and demount a high strength bolt. All the parts are built-in parts. A travel marking positioning rod is provided. A threaded guide hoe is added to the piston, the reading of the travel of the piston can be clearly observed during the operation. So, the convenience, safety and reliability in the demounting operation with the stretcher is ensured.
Description
(1) technical field
The utility model relates to the bolt hydraulic elongator that a kind of high-strength bolt is fastening and dismantle.
(2) background technology
Carry out the bolt hydraulic elongator of bolted and dismounting at present, form by hydraulic pump, high-pressure oil pipe, high pressure connection, oil cylinder, piston, support ring and tightening and loosening rod.Bolt one end is fixed on the body, and in the inside, oil cylinder, piston are bearing on another body by support ring and link to each other with the other end bolt support ring nut sleeve.When the pressure oil of hydraulic pump injects in the oil cylinder by high-pressure oil pipe, oil cylinder is motionless, oil pressure promotes piston and passes to body by bolt, realize compressing between body and body, compressing the back can be fastening by the tightening and loosening rod or the dismounting nut, nut fastening or dismantle finish after, hydraulic pump is put pressure, have plenty of the oil of oil cylinder and piston space to be discharged and reset by artificial action, though have can realize refluxing automatically reset.But because of device outside, operation inconvenience, and exceed stroke easily and damage stretcher and stretcher and when the installation and removal operation, easily directly fall down to pound and hurt sb.'s feelings or smash device.
(3) summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of safe and reliable bolt hydraulic elongator.
The technical scheme in the invention for solving the technical problem is: all parts are installed in inside, stroke sign reference column is housed, increased the screw thread pilot hole on piston.
The beneficial effects of the utility model are that stroke sign reference column is housed, and can know the stroke of knowing piston during use, and are easy to operate, safe and reliable when having guaranteed the operation of stretcher installing/dismounting.
(4) description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a kind of bolt hydraulic elongator schematic diagram
Among the figure: 1. body 2. nuts 3. support rings 4. oil cylinders 5. pistons
6. spring 7. bolts 8. oil cylinder glands 9. stroke sign reference columns 10. kingbolts
11. screw thread pilot hole
(5) specific embodiment
The specific embodiment:
In the drawings, the gap that the bottom of piston (5) screw thread has processed between one section screw thread pilot hole (11) and the kingbolt (10) is 0.1-0.3mm, piston (5) upper end has 3-8 stepped hole mounting spring (6), 1-4 stroke sign reference column (9) arranged, 6-12 screw hole fixed oil cylinder gland (8) arranged on the oil cylinder (4), having 1-4 to cross perforation on the oil cylinder gland (8) matches with stroke marker post (9), the gap is at+0.5-1.0mm, when stretcher spring when working is compressive state, stroke sign reference column (9), rise along with the increase of piston stroke, when piston (5) reaches when closing on extreme limit of travel, redness caution line on the stroke sign reference column (9) exceeds oil cylinder gland (8) and reveals, and quits work at once, again back and forth operation.After the end-of-job release, spring will push up on the oil cylinder, and the pressure in the oil cylinder is squeezed oil sump tank.Because warning mark has been arranged, just can not damage stretcher, and because screw thread pilot hole (11) has been arranged because of exceeding stroke, just installation or removal stretcher easily can directly not fall down, and is even more important during to the actual use of bolt hydraulic elongator of big specification.The utility model bolt hydraulic elongator beneficial effect is to save oil plant, and is time saving and energy saving, easy to operate, safe and reliable.
Claims (3)
1, a kind of bolt hydraulic elongator comprises piston, piston rod, it is characterized in that an end of described piston (5) internal thread has a kind of screw thread pilot hole (11), at the other end end face stroke sign reference column (9) and compression spring (6) is housed.
2, a kind of hydraulic elongator according to claim 1 is characterized in that described stroke sign reference column (9) has 1-4.
3, a kind of hydraulic elongator according to claim 1 is characterized in that: described compression spring has 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126360 CN200957544Y (en) | 2006-10-11 | 2006-10-11 | Bolt hydraulic stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126360 CN200957544Y (en) | 2006-10-11 | 2006-10-11 | Bolt hydraulic stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200957544Y true CN200957544Y (en) | 2007-10-10 |
Family
ID=38784417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620126360 Expired - Fee Related CN200957544Y (en) | 2006-10-11 | 2006-10-11 | Bolt hydraulic stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200957544Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120296A (en) * | 2011-01-25 | 2011-07-13 | 江苏拓盛重工机械有限公司 | Hydraulic preloading device of fixed bolt |
| CN103170833A (en) * | 2013-03-05 | 2013-06-26 | 马鞍山市三江机械有限公司 | Novel double-level tensioner |
| CN103659251A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Automatic resetting stretcher |
| CN106737347A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of overtravel alarm stretcher and its drawing process |
| CN108247330A (en) * | 2017-12-28 | 2018-07-06 | 上海中船三井造船柴油机有限公司 | Integral hydraulic strainer |
| CN113733017A (en) * | 2021-09-16 | 2021-12-03 | 中船动力研究院有限公司 | Hydraulic bolt stretcher |
-
2006
- 2006-10-11 CN CN 200620126360 patent/CN200957544Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120296A (en) * | 2011-01-25 | 2011-07-13 | 江苏拓盛重工机械有限公司 | Hydraulic preloading device of fixed bolt |
| CN103170833A (en) * | 2013-03-05 | 2013-06-26 | 马鞍山市三江机械有限公司 | Novel double-level tensioner |
| CN103659251A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Automatic resetting stretcher |
| CN106737347A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of overtravel alarm stretcher and its drawing process |
| CN108247330A (en) * | 2017-12-28 | 2018-07-06 | 上海中船三井造船柴油机有限公司 | Integral hydraulic strainer |
| CN113733017A (en) * | 2021-09-16 | 2021-12-03 | 中船动力研究院有限公司 | Hydraulic bolt stretcher |
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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: 20071010 Termination date: 20101011 |