CN210034108U - Bolt lengthening device - Google Patents
Bolt lengthening device Download PDFInfo
- Publication number
- CN210034108U CN210034108U CN201920599270.7U CN201920599270U CN210034108U CN 210034108 U CN210034108 U CN 210034108U CN 201920599270 U CN201920599270 U CN 201920599270U CN 210034108 U CN210034108 U CN 210034108U
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- threaded rod
- bolt
- thickness
- length
- lengthening device
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Abstract
A bolt lengthening device is composed of a threaded rod, a matched nut and a gasket; the length of the threaded rod L =2b + c + d; b, the thickness of the matched nut is unit mm; c, the exposed length of the threaded rod after fastening is unit mm; d is the thickness of the gasket in mm; one end of the threaded rod is provided with an inner hexagonal groove used for a hexagonal wrench to fasten the threaded rod, the other end of the threaded rod is provided with a threaded hole matched with the embedded bolt, and the depth of the threaded hole is a, which is not less than the exposed length of the embedded bolt-the thickness of an equipment base or a bottom plate. The utility model provides a buried bolt problem long inadequately in advance.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a bolt lengthening device which can be used for overcoming the defect of insufficient length when the leakage length of an embedded bolt is insufficient, is convenient to install, and is economical and applicable.
Background
Most large-scale equipment or steel construction all can carry out bolted connection with equipment base or steel construction bottom plate on foundation basis in advance pre-buried bolt before the installation, but pre-buried bolt because reasons such as construction error or design error when the construction, the condition that exposes length is not enough of pre-buried bolt can appear, can not correctly install according to the drawing, causes the later stage potential safety hazard to appear.
When the exposed length of the embedded bolt is insufficient, several common treatment methods are as follows:
1, aiming at the installation of important equipment, foundation is required to be made again, and bolts are embedded again, so that the construction period is delayed, and a large amount of materials and funds are wasted.
And 2, cutting the bolts, and rearranging the bolts by adopting a chemical bolt implanting method, wherein the method needs a large amount of accounting of a design institute, meanwhile, the installation precision is also reduced due to the transformation of an original foundation on site, and certain safety risk exists.
3, a common method comprises chiseling a part of surface concrete, cutting off a part of embedded bolts, welding and butting bolts to be lengthened, grouting high-strength fine aggregate concrete after the bolts are connected, and grouting the concrete elevation to the required elevation. The method has complex process and high precision requirement, and can also cause the delay of the construction period and waste of a large amount of materials and funds.
Disclosure of Invention
In order to solve the problem that the embedded bolt is not long enough, the invention aims to provide a bolt lengthening device which is safe and reliable in structure, does not affect the precision of later equipment installation, does not cause waste of a large amount of materials and funds, and ensures that the engineering progress is not affected.
The invention relates to a bolt lengthening device, which lengthens a pre-embedded bolt with insufficient exposed length, screws a nut for fastening, does not influence the installation of an equipment base and a steel structure bottom plate and does not influence the original installation precision,
a bolt lengthening device is composed of a threaded rod, a matched nut and a gasket.
The length L =2b + c + d of the threaded rod,
b, the thickness of the matched nut is unit mm;
c, the exposed length of the threaded rod after fastening is unit mm;
d is the thickness of the gasket in mm;
one end of the threaded rod is provided with an inner hexagonal groove used for a hexagonal wrench to fasten the threaded rod, the other end of the threaded rod is provided with a threaded hole matched with the embedded bolt, and the depth of the threaded hole is a, which is not less than the exposed length of the embedded bolt-the thickness of an equipment base or a bottom plate.
The bolt lengthening device can be manufactured in advance when the exposed length of the foundation embedded bolt is found to be insufficient, the length L of the sleeve and the depth a of the internal thread are determined according to field measurement data, and the bolt lengthening device is sent to the field after the manufacture is finished. On-the-spot earlier with equipment base or steel construction bottom plate location to basic buried bolt, with bolt lengthening device internal screw thread one side again with the buried bolt supporting the twisting, use hexagon socket head cap spanner to fasten bolt lengthening device on each buried bolt in one side that bolt lengthening device has hexagon socket head cap, install gasket, two nuts on bolt lengthening device in proper order again, will adjust equipment base or steel construction bottom plate and finally screw up fixedly as required.
The invention solves the problem that the embedded bolt is not long enough. When the exposed length of the foundation embedded bolt of the equipment or the steel structure is not enough, the foundation embedded bolt can be lengthened by adopting the method, the foundation which is already made on site does not need to be modified, a large amount of labor, machine, material and time are saved, the construction progress is ensured, and meanwhile, the fastening strength of the equipment base or the steel structure bottom plate is not influenced.
Description of the drawings:
fig. 1 is a state diagram of the use of the present invention.
Fig. 2 is a structural view of the threaded rod of the present invention.
Fig. 3 is a top view of fig. 2.
In the figure, 1, a foundation, 2, an embedded bolt, 3, an equipment base or a steel structure bottom plate, 4, a gasket, 5, a matched nut, 6, a threaded rod, 7, a threaded hole, 8, an inner hexagonal groove, 9 and an external thread.
Detailed Description
A certain bulk cargo store yard, prevent that the dust is excessive, cause the pollution to all ring edge borders, need build the steel construction around the store yard and enclose fender engineering, after this engineering basis is accomplished, discover in carrying out the process handing-over inspection, the embedded bolt that has partial basis exposes length inadequately, if reform transform again this partial basis, not only can cause the waste of resource, can consume a large amount of time simultaneously, will probably influence the installation of later stage steel support, for guaranteeing the time limit for a project requirement, need the producer to take other ways to handle.
Under the condition, the bolt lengthening device can be adopted, the length L of the threaded rod and the depth a of the threaded hole are determined according to field measurement data, the threaded rod is manufactured according to requirements and then sent to the field, and the threaded rod is installed on the field.
The first step is as follows: firstly, hoisting the prefabricated steel bracket to the position of the corresponding foundation embedded bolt, and adjusting the verticality and the levelness of the steel bracket bottom plate.
The second step is that: and screwing one end of the threaded rod with the threaded hole which is manufactured in advance on the embedded bolt by using an inner hexagonal wrench, and preliminarily fixing the steel bracket bottom plate.
The third step: and sleeving a gasket on the outer side of the threaded rod, and finally screwing a nut to compress the steel support bottom plate.
And finishing the installation of the whole steel bracket.
As shown in fig. 1, a bolt lengthening device is composed of a threaded rod 6, a matched nut 5 and a gasket 4.
The length L =2b + c + d of the threaded rod,
b, the thickness of the matched nut is unit mm;
c, the exposed length of the threaded rod after fastening is unit mm;
d is the thickness of the gasket in mm;
as shown in figure 2, one end of the threaded rod is provided with an inner hexagonal groove 8, the other end of the threaded rod is provided with a threaded hole 7 matched with the embedded bolt, and the depth of the threaded hole is a, which is not less than the exposed length of the embedded bolt-the thickness of an equipment base or a bottom plate.
Claims (1)
1. A bolt lengthening device is composed of a threaded rod, a matched nut and a gasket; the length L of the threaded rod is =2b + c + d;
b, the thickness of the matched nut is unit mm;
c, the exposed length of the threaded rod after fastening is unit mm;
d is the thickness of the gasket in mm;
one end of the threaded rod is provided with an inner hexagonal groove used for a hexagonal wrench to fasten the threaded rod, the other end of the threaded rod is provided with a threaded hole matched with the embedded bolt, and the depth of the threaded hole is a, which is not less than the exposed length of the embedded bolt-the thickness of an equipment base or a bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920599270.7U CN210034108U (en) | 2019-04-28 | 2019-04-28 | Bolt lengthening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920599270.7U CN210034108U (en) | 2019-04-28 | 2019-04-28 | Bolt lengthening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210034108U true CN210034108U (en) | 2020-02-07 |
Family
ID=69362341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920599270.7U Active CN210034108U (en) | 2019-04-28 | 2019-04-28 | Bolt lengthening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210034108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230634A (en) * | 2019-04-28 | 2019-09-13 | 山西尚风科技股份有限公司 | A kind of stud extender device |
-
2019
- 2019-04-28 CN CN201920599270.7U patent/CN210034108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230634A (en) * | 2019-04-28 | 2019-09-13 | 山西尚风科技股份有限公司 | A kind of stud extender device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 030032 floor 18, block B, times Freedom Plaza, No. 190, Longxing street, Shanxi Demonstration District, Taiyuan City, Shanxi Province Patentee after: Shangfeng Technology Co.,Ltd. Address before: 030006 6th floor, block B, Gaoxin international, high tech Development Zone, Taiyuan City, Shanxi Province Patentee before: SHANXI SHANGFENG TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |