CN201693347U - Resetting type bolt hydraulic stretching device - Google Patents
Resetting type bolt hydraulic stretching device Download PDFInfo
- Publication number
- CN201693347U CN201693347U CN201020216976XU CN201020216976U CN201693347U CN 201693347 U CN201693347 U CN 201693347U CN 201020216976X U CN201020216976X U CN 201020216976XU CN 201020216976 U CN201020216976 U CN 201020216976U CN 201693347 U CN201693347 U CN 201693347U
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- China
- Prior art keywords
- piston
- spring
- oil cylinder
- pressing plate
- type bolt
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- Expired - Fee Related
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Abstract
The utility model discloses a resetting type bolt hydraulic stretching device, comprising an oil cylinder, a piston and a housing washer, wherein the housing washer is disposed at and fixedly connected to the bottom of the oil cylinder, and the piston is disposed in the oil cylinder. The utility model is characterized in that a pressing plate is disposed at the upper end of the oil cylinder; a compressing spring is disposed between the pressing plate and the piston; a spring housing is fixedly connected to the pressing plate; the compressing spring is disposed in the spring housing; the lower end of the compressing spring contacts with the piston. Compared with the prior art, the utility model is advantageous in that with the arrangement of the compressing spring between the piston and the pressing plate, a reset force is provided by the compressing spring to the piston; under non-working state, the piston is reset through the spring force of a spring, and an adequate gap between the piston and the pressing plate is guaranteed, and the movement of the piston under working state can be facilitated.
Description
Technical field:
The utility model relates to a kind of bolt hydraulic elongator, specifically is a kind of homing position type bolt hydraulic elongator with reset force.
Technical background
At present for the bolt of diameter greater than 1 inch, use the common manual torque wrench and be and be difficult to its pretension, must be by the pre-clamping tool of a kind of special bolt with its pretension, that is exactly the bolt hydraulic elongator.As the patent No. is CN97234407.1 described " bolt hydraulic bolting device " by name, and it is made up of piston, oil cylinder and seat ring.The displacement of piston relies on the oil pressure size of oil cylinder to adjust, in off working state, position of piston is indefinite, has influenced the amount of tension of piston under in working order.
Summary of the invention
Technical problem to be solved in the utility model is at above-mentioned the deficiencies in the prior art, and a kind of homing position type bolt hydraulic elongator with reset function is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of homing position type bolt hydraulic elongator, comprise oil cylinder, piston, seat ring, described seat ring is arranged on the lower end of oil cylinder and fixedlys connected with oil cylinder, described piston is arranged in the oil cylinder, it is characterized in that: be provided with a pressing plate in described oil cylinder upper end, between this pressing plate and described piston, be provided with a compression spring.
A fixedly connected spring housing on described pressing plate, described compression spring is arranged in this spring housing, and the lower end of compression spring contacts with described piston.
Described compression spring is wind spring or dish spring.
Compared with prior art, the utility model has the advantages that: the utility model is provided with the compression spring between piston and pressing plate, provide a kind of reset force by the compression spring to piston, in off working state, spring force by spring makes piston reset, making like this has enough spaces between piston and the pressing plate, be convenient to the motion of duty lower piston.
Description of drawings
Fig. 1 is the structure chart of combined bolt hydraulic bolting device
Reference numeral: 1, handle 2, guiding screw pole 3, spring housing 4, compression spring 5, oil cylinder 6, piston 7, seat ring 8, stir handle 9, pressing plate.
The specific embodiment
Describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of homing position type bolt of the utility model hydraulic elongator, comprise oil cylinder 5, piston 6, seat ring 7, seat ring 7 is arranged on the lower end of oil cylinder 5 and fixedlys connected with oil cylinder 5, and piston 6 is arranged in the oil cylinder 5, passes through the fixedly connected pressing plate 9 of screw in oil cylinder 5 upper ends, fixedly connected spring housing 3 on pressing plate 9, compression spring 4 is gone here and there on guiding screw pole 2, and is placed in the spring housing 3, and the lower end of compression spring 4 contacts with piston 6.The compression spring can be chosen wind spring or dish spring.
Claims (3)
1. homing position type bolt hydraulic elongator, comprise oil cylinder, piston, seat ring, described seat ring is arranged on the lower end of oil cylinder and fixedlys connected with oil cylinder, described piston is arranged in the oil cylinder, it is characterized in that: be provided with a pressing plate in described oil cylinder upper end, between this pressing plate and described piston, be provided with a compression spring.
2. homing position type bolt hydraulic elongator according to claim 1 is characterized in that: a fixedly connected spring housing on described pressing plate, and described compression spring is arranged in this spring housing, and the lower end of compression spring contacts with described piston.
3. homing position type bolt hydraulic elongator according to claim 1 and 2 is characterized in that: described compression spring is wind spring or dish spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020216976XU CN201693347U (en) | 2010-06-07 | 2010-06-07 | Resetting type bolt hydraulic stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020216976XU CN201693347U (en) | 2010-06-07 | 2010-06-07 | Resetting type bolt hydraulic stretching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201693347U true CN201693347U (en) | 2011-01-05 |
Family
ID=43394592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020216976XU Expired - Fee Related CN201693347U (en) | 2010-06-07 | 2010-06-07 | Resetting type bolt hydraulic stretching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201693347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103659251A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Automatic resetting stretcher |
-
2010
- 2010-06-07 CN CN201020216976XU patent/CN201693347U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103659251A (en) * | 2013-11-21 | 2014-03-26 | 南通高盛机械制造有限公司 | Automatic resetting 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: 20110105 Termination date: 20130607 |