CN202732586U - Detachable expansion screw - Google Patents
Detachable expansion screw Download PDFInfo
- Publication number
- CN202732586U CN202732586U CN 201220296667 CN201220296667U CN202732586U CN 202732586 U CN202732586 U CN 202732586U CN 201220296667 CN201220296667 CN 201220296667 CN 201220296667 U CN201220296667 U CN 201220296667U CN 202732586 U CN202732586 U CN 202732586U
- Authority
- CN
- China
- Prior art keywords
- screw
- tube
- expansion
- setscrew
- big
- 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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- Vibration Prevention Devices (AREA)
Abstract
The utility model discloses a detachable expansion screw which is characterized by comprising a threaded rod (1), a big-end expansion tube (2), a screw cap and a spacer (3), wherein the threaded rod (1) is arranged inside the big-end expansion tube (2), the screw cap and the spacer (3) are installed on the threaded rod (1), the diameter of one end portion of the big-end expansion tube (2), corresponding to the screw cap and the spacer (3), is larger than that of a tube body. According to the detachable expansion screw, due to the fact that the big-end expansion tube can rotate through clipping of a wrench or other tools, when the expansion screw enters a wall body, after the screw cap is screwed off, the head of the expansion tube can be clamped through the wrench or other tools, and the detachable expansion screw is convenient to operate.
Description
Technical field
The utility model relates to a kind of novel worker that builds and uses metal construction, specifically relates to a kind of dismountable setscrew.
Background technique
Now construction engineering is all built with reinforced concrete, after agent structure is finished with concreting, often need to carry out the change of some necessity with some relatively heavier machinery, such as in the hole that floor bores some floor drains, perhaps cut with large-scale cutting machine.Often weigh jin up to a hundred of these apparatuses, and vibrations are very large during operation, and temperature is very high, may not be fixed with manpower, for many these type of machineries, generally adopts setscrew to be fixed.
And general setscrew is difficult to extract from concrete, so generally be disposable, just it is embedded in the concrete after using, and one side has had influence on attractive in appearancely like this, has also increased on the other hand cost.
Some dismountable setscrews are also arranged on the market, and its mechanism generally is to increase screw rod, and is then that screw rod is terminal crooked, making it can be by force from extracting within the walls, but the life-span of this setscrew often is not very high, and is larger to the damage of expansion tube, and is difficult to it is extracted.
Summary of the invention
The purpose of this utility model is to have overcome deficiency of the prior art, provides a kind of cost lower, can repeated multiple timesly use the detachable expansion screw of easy operating.
In order to solve the problems of the technologies described above, the utility model is to be achieved through the following technical solutions:
A kind of dismountable setscrew, it is characterized in that: comprise screw rod, large head expanding tube, nut and pad, described screw rod places large head expanding tube, and described nut and pad are installed on the screw rod, and an end end diameter of the corresponding nut of described large head expanding tube and pad is greater than its pipe diameter.
Compared with prior art, the beneficial effects of the utility model are:
This large head expanding tube can rotate expansion tube by instrument clamps such as spanners, after setscrew enters body of wall, nut can be unscrewed and clamp the head of this expansion tube with instruments such as spanners afterwards, makes its operation of being more convenient for.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the three-view diagram of the large head expanding tube of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
As shown in Figure 1, 2, the utility model comprises screw rod 1, large head expanding tube 2, nut and pad 3, described screw rod 1 places large head expanding tube 2, and nut and pad 3 are installed on the screw rod 1, and an end end diameter of described large head expanding tube 2 corresponding nuts and pad 3 is greater than its pipe diameter.
When setscrew enters body of wall, can first nut and pad 3 be unscrewed, then repeatedly beat the vibrations setscrew, make it slightly to have loosening.Then clamp large head expanding tube 2 with plench, rotated several times makes setscrew fully loosening back and forth, just setscrew can be removed from body of wall smoothly.
Owing to adopt large head expanding tube 2, setscrew can easily be removed and be reusable.
The undeclared part that relates in the utility model is same as the prior art or adopt prior art to be realized.
Claims (1)
1. dismountable setscrew, it is characterized in that: comprise screw rod (1), large head expanding tube (2), nut and pad (3), described screw rod (1) places large head expanding tube (2), described nut and pad (3) are installed on the screw rod (1), and an end end diameter of the corresponding nut of described large head expanding tube (2) and pad (3) is greater than its pipe diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296667 CN202732586U (en) | 2012-06-25 | 2012-06-25 | Detachable expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220296667 CN202732586U (en) | 2012-06-25 | 2012-06-25 | Detachable expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202732586U true CN202732586U (en) | 2013-02-13 |
Family
ID=47658288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220296667 Expired - Fee Related CN202732586U (en) | 2012-06-25 | 2012-06-25 | Detachable expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202732586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564960A (en) * | 2015-01-30 | 2015-04-29 | 王利烨 | Easy-to-disassemble expansion bolt |
-
2012
- 2012-06-25 CN CN 201220296667 patent/CN202732586U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564960A (en) * | 2015-01-30 | 2015-04-29 | 王利烨 | Easy-to-disassemble expansion bolt |
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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: 20130213 Termination date: 20130625 |