CN211548091U - Extension prosthetic devices of buried bolt in advance - Google Patents
Extension prosthetic devices of buried bolt in advance Download PDFInfo
- Publication number
- CN211548091U CN211548091U CN201921552028.0U CN201921552028U CN211548091U CN 211548091 U CN211548091 U CN 211548091U CN 201921552028 U CN201921552028 U CN 201921552028U CN 211548091 U CN211548091 U CN 211548091U
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- bolt
- sleeve
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- buried
- screw rod
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Abstract
The utility model provides an extension prosthetic devices of buried bolt in advance, belongs to bolt repair tools technical field for repair the extension to the buried bolt in advance that damaged or length is not enough. The technical scheme is as follows: the lower part of the sleeve bolt is a sleeve, a thread is arranged in an inner hole of the sleeve, the thread of the inner hole of the sleeve is matched with the external thread of the embedded bolt, the upper part of the sleeve bolt is a screw rod, the thread of the screw rod is matched with the thread of the embedded bolt, or threads of other specifications are adopted as required, the upper screw rod of the sleeve bolt and the lower sleeve are of an integrated connecting structure, and the central axis of the upper screw rod and the central axis of the lower sleeve are on the same axis. The utility model discloses simple structure, convenient to use can restore the pre-buried bolt of fracture or the unsatisfied equipment fixing length of elevation, and the construction minirange, the bolt intensity after the restoration is high, can reach pre-buried bolt's service strength completely, has shortened the engineering time, has improved work efficiency, has practiced thrift cost of maintenance greatly.
Description
Technical Field
The utility model relates to a carry out prosthetic devices that prolongs to the pre-buried bolt that damages or length is not enough belongs to bolt repair tools technical field.
Background
The embedded bolt is mainly used for positioning and fixing the equipment or the structure through a fastening and positioning base. In production and use, the embedded bolt is damaged and fails due to shearing force, tensile force and the like, and in the other situation, the embedded bolt fails due to insufficient length due to errors in elevation dotting in a new project. In the production practice, the bolt is lengthened by a lap joint method after concrete is chiseled off, and because welding defects such as welding impermeability and stress concentration exist easily during welding, the welded bolt is easy to break and damage again, and the situation that the embedded bolt is repaired by the lap joint welding method is poor in use effect and easy to damage usually exists, so that production is influenced, loss is brought to enterprises, and improvement is very necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an extension prosthetic devices of buried bolt in advance is provided, this kind of device can restore the buried bolt in advance that fracture or the unsatisfied equipment fixing length of elevation do not need the large tracts of land to chisel out the concrete, can reach the service strength of former bolt, and the engineering time is short, and it is convenient to restore.
The technical scheme for solving the technical problems is as follows:
the utility model provides an extension prosthetic devices of buried bolt in advance, it includes the sleeve pipe bolt, the lower part of sleeve pipe bolt is the sleeve pipe, sheathed tube hole diameter and buried bolt in advance's external diameter phase-match, there is the screw thread in the sheathed tube hole, sheathed tube hole screw thread and buried bolt in advance's external screw thread phase-match, the upper portion of sleeve pipe bolt is the screw rod, the screw thread of screw rod and buried bolt in advance's screw thread phase-match, or adopt the screw thread of other specifications as required, the upper portion screw rod and the lower part sleeve pipe of sleeve pipe bolt are connection structure as an organic whole, the central axis of upper portion screw rod and.
The extension prosthetic devices of above-mentioned buried bolt in advance, it also has pretension nut, pretension bullet pad, the screw thread of pretension nut and buried bolt in advance's external screw thread phase-match, pretension bullet pad's specification and buried bolt in advance phase-match, pretension nut and pretension bullet pad suit are in advance in the upper end of buried bolt in advance in proper order, and the lower part sleeve pipe of sleeve pipe bolt is threaded connection with buried bolt in advance, and the terminal surface is closely relative with the upper surface of the pretension bullet pad of suit on buried bolt in advance under the.
The utility model has the advantages that:
the utility model discloses a lower part sleeve pipe adopts threaded connection with buried bolt in advance, and the screw rod on sleeve pipe upper portion has replaced the buried bolt in advance of damage, has not only prolonged buried bolt's length in advance, can also trade the screw thread of trading other specifications to satisfy the needs of erection equipment.
The utility model discloses simple structure, convenient to use can restore the pre-buried bolt of the unsatisfied equipment fixing length of fracture or elevation, do not need the large tracts of land to chisel out the concrete in the construction, and the construction small size, bolt intensity after the restoration is high, can reach pre-buried bolt's service strength completely, has shortened the engineering time, has reduced the influence to production, has improved work efficiency, has practiced thrift cost of maintenance greatly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The figures are labeled as follows: the device comprises an embedded bolt 1, a sleeve bolt 2, a pre-tightening nut 3, a pre-tightening elastic cushion 4, a secondary grouting layer 5 and an equipment base 6.
Detailed Description
The utility model discloses constitute by sleeve pipe bolt 2, pretension nut 3, pretension bullet pad 4.
The lower part of the sleeve bolt 2 is shown as a sleeve, the diameter of the inner hole of the sleeve is matched with the outer diameter of the embedded bolt 1, the inner hole of the sleeve is provided with a thread, and the thread of the inner hole of the sleeve is matched with the outer thread of the embedded bolt 1. The upper portion of sleeve pipe bolt 2 is the screw rod, and the screw thread of screw rod and the screw thread phase-match of buried bolt 1 in advance, or adopts the screw thread of other specifications as required, and the upper portion screw rod of sleeve pipe bolt 2 and lower part sleeve pipe are connection structure as an organic whole, and the central axis of upper portion screw rod and the central axis of lower part sleeve pipe are on an axis. The sleeve bolt 2 is screwed at the upper end of the embedded bolt 1, the length of the embedded bolt 1 can be prolonged, the use requirement is met, and the defects that welding is not tight, stress is concentrated and fracture and damage are easy to occur again due to the fact that lap joint welding bolts are adopted in the past are overcome.
Before the sleeve bolt 2 is tightened, a pre-tightening nut 3 and a pre-tightening elastic pad 4 need to be installed on the embedded bolt 1, the thread of the pre-tightening nut 3 is matched with the external thread of the embedded bolt 1, and the specification of the pre-tightening elastic pad 4 is matched with that of the embedded bolt 1. During installation, the pre-tightening nut 3 is screwed at the upper end of the pre-tightening bolt 1, the pre-tightening elastic pad 4 is placed above the pre-tightening nut 3, the sleeve of the sleeve bolt 2 is screwed at the upper end of the pre-tightening bolt 1, and the lower end face of the sleeve bolt 2 is tightly propped against the upper surface of the pre-tightening elastic pad 4 sleeved at the upper end of the pre-tightening bolt 1.
The utility model discloses a use as follows:
a. chiseling and cleaning concrete around the broken and damaged embedded bolt 1 in a small range to expose the broken bolt;
b. repairing the screw thread of the broken embedded bolt 1 by using a threading die tool;
c. before the premise of repair, preparing a sleeve bolt 2, a pre-tightening nut 3 and a pre-tightening elastic cushion 4, wherein the sleeve bolt 2 is machined by 45# steel or forged steel according to the strength of a pre-buried bolt 1, a screw rod on the upper part of the sleeve bolt 2 has the same specification with the broken pre-buried bolt 1, and can be changed into other specifications according to needs, the sleeve part on the lower part of the sleeve bolt 2 has the same specification with the pre-buried bolt 1, the screw thread is matched, and the length of the sleeve bolt is more than 5 times of the rod diameter; the pre-tightening nut 3 and the pre-tightening elastic pad 4 are matched with the pre-tightening bolt 1 in the same specification, thread and size;
d. after the screw thread of the broken embedded bolt 1 is repaired, firstly, the pre-tightening nut 3 is rotated to a proper position, then the pre-tightening elastic cushion 4 is placed, finally, the sleeve bolt 2 is screwed in, and the sleeve bolt 2 is screwed by a spanner according to the preset pre-tightening force;
e. grouting a grouting material, and completing and filling the chiseled concrete;
f. and (5) installing the equipment base 6 and the sizing block, after fastening, pouring the secondary grouting layer 5, and performing maintenance.
Claims (2)
1. The utility model provides an extension prosthetic devices of buried bolt in advance which characterized in that: it includes sleeve pipe bolt (2), the lower part of sleeve pipe bolt (2) is the sleeve pipe, sheathed tube hole diameter and buried bolt (1) external diameter phase-match, there is the screw thread in the sheathed tube hole, sheathed tube hole screw thread and buried bolt (1) external screw thread phase-match, the upper portion of sleeve pipe bolt (2) is the screw rod, the screw thread of screw rod and buried bolt (1) screw thread phase-match, the upper portion screw rod and the lower part sleeve pipe of sleeve pipe bolt (2) are connection structure as an organic whole, the central axis of upper portion screw rod and the sheathed tube central axis in lower part are on an axis.
2. The extension repairing device of the embedded bolt as claimed in claim 1, wherein: the novel sleeve is characterized by further comprising a pre-tightening nut (3) and a pre-tightening elastic pad (4), wherein the thread of the pre-tightening nut (3) is matched with the external thread of the embedded bolt (1), the specification of the pre-tightening elastic pad (4) is matched with the embedded bolt (1), the pre-tightening nut (3) and the pre-tightening elastic pad (4) are sequentially sleeved at the upper end of the embedded bolt (1), a lower sleeve of the sleeve bolt (2) is in threaded connection with the embedded bolt (1), and the lower end face of the sleeve bolt (2) is closely opposite to the upper surface of the pre-tightening elastic pad (4) sleeved at the upper end of the embedded bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552028.0U CN211548091U (en) | 2019-09-18 | 2019-09-18 | Extension prosthetic devices of buried bolt in advance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552028.0U CN211548091U (en) | 2019-09-18 | 2019-09-18 | Extension prosthetic devices of buried bolt in advance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211548091U true CN211548091U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921552028.0U Active CN211548091U (en) | 2019-09-18 | 2019-09-18 | Extension prosthetic devices of buried bolt in advance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211548091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644625A (en) * | 2019-09-18 | 2020-01-03 | 宣化钢铁集团有限责任公司 | Extension prosthetic devices of buried bolt in advance |
-
2019
- 2019-09-18 CN CN201921552028.0U patent/CN211548091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644625A (en) * | 2019-09-18 | 2020-01-03 | 宣化钢铁集团有限责任公司 | Extension prosthetic devices of buried bolt in advance |
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