CN112342927A - Opposite-pulling screw rod - Google Patents
Opposite-pulling screw rod Download PDFInfo
- Publication number
- CN112342927A CN112342927A CN202011313178.3A CN202011313178A CN112342927A CN 112342927 A CN112342927 A CN 112342927A CN 202011313178 A CN202011313178 A CN 202011313178A CN 112342927 A CN112342927 A CN 112342927A
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- screw rod
- screw
- counter
- wedge
- building template
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a counter-pull screw, which is characterized in that an inner screw is sleeved in a cylindrical outer screw through screw threads, a wedge block is arranged between a pointed body of the inner screw and a body, the wedge block is hinged at the rear end of the pointed body through a compression spring and can be matched with a tapered inclined surface of the outer screw, when the counter-pull screw is required to be arranged in a wall building template, the pointed body is only required to be used as the front end to penetrate into the inner side and the outer side of the wall building template, the outer screw is screwed forwards to enable the tapered inclined surface of the outer screw to jack the wedge block, then a large nut at the rear end of the outer screw is adjusted to enable the large nut to be abutted against the outer side of a back edge of the building template, and further the counter-pull screw is fastened at two sides of the building template, when the counter-pull screw is required to be dismounted by building a wall, the wedge block is closed, so that the closed counter-pull screw is pulled out of the building template, and the counter-pull screw can be dismounted under a building template operation platform, the safety factor is high and the repeated utilization of the pull screw rod is realized.
Description
Technical Field
The invention relates to the field of building construction, in particular to a building tool, and more particularly relates to a counter-pull screw.
Background
The split bolt is used for connecting the inner template and the outer template of the wall body to bear the side pressure and other loads of concrete, ensures that the space between the inner template and the outer template can meet the construction requirement, and is also used as a fulcrum of the template and a supporting structure thereof, so the arrangement of the split bolt is very important for the integral stability, rigidity and strength of the template structure, but the traditional split bolt is a disposable bolt, when the formwork is required to be disassembled after the vertical wall is poured, nuts at two ends are loosened to disassemble the template, the split bolt is left in the poured vertical wall, a bolt head exposed outside the vertical wall is removed to finish the pouring of the wall surface, but the traditional split bolt can not perform the tie between the inner template and the outer template of the hollow thin-wall pier wall body of the bridge, the reason is that the thin-wall pier is often hundreds of meters high, and a worker enters the cavity of the thin-wall pier to install a nut at the inner side of the split bolt very difficult, and is dangerous, and the accident of falling from high altitude can happen by accident.
Therefore, the opposite-pulling screw which is convenient for high-altitude installation of the inner steel formwork and the outer steel formwork of the cavity thin-wall pier stud and can be repeatedly used is urgently needed without installing the inner nut of the opposite-pulling screw.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a split screw, so as to solve the problem that a conventional split bolt cannot be used for tying an inner and outer formwork of a hollow thin-walled pier wall of a bridge because a thin-walled pier is often hundreds of meters high, a worker is very difficult and dangerous to operate when entering a cavity of the thin-walled pier to install a nut at the inner side of the split screw, and a high-altitude falling accident occurs due to carelessness.
The invention provides a counter-pull screw rod which is characterized by comprising an outer screw rod and an inner screw rod, wherein,
the outer screw rod is in a cylindrical structure and is provided with a screw hole,
a conical inclined plane is arranged on the outer side of the front end of the outer screw rod, and threads are arranged on the inner side of the outer screw rod;
the inner screw comprises a body and a pointed body fixed at the front end of the body; and the number of the first and second electrodes,
threads are also arranged on the outer side of the body, and the body penetrates through the outer screw rod and is screwed with the outer screw rod;
a wedge-shaped block is arranged between the pointed body and the body;
the wedge block can open and shut through compression spring and articulate in the rear end of prong, if the wedge block is closed, the wedge block merges and closes on the awl inclined plane, and the diameter that the wedge block is closed on the awl inclined plane is not more than the diameter of outer screw rod.
Preferably, the body is longer than the outer screw.
Preferably, the tip is bullet-shaped.
Preferably, a thread is provided on the outer side of the outer screw;
a large nut with threads is arranged at the rear part of the outer screw rod;
and a spanner is arranged on the outer side of the large nut and used for adjusting the relative position of the large nut and the outer side of the outer screw rod.
Preferably, a handle is provided at a rear end of the outer screw for screwing the outer screw.
Preferably, an inner nut is provided at a rear end of the body, the inner nut being used to adjust the inner screw.
Preferably, the outer screw and the inner screw penetrate through the inner side and the outer side of the building template;
and channel steel back ridges are arranged on the inner side and the outer side of the building template.
Preferably, if the wedge-shaped block is opened, the rear end of the pointed body supports the wedge-shaped block, so that the wedge-shaped block fastens a channel steel back edge on the inner side of the building template;
the large nut and the outer screw rod are screwed together to fasten the channel steel back edge on the outer side of the building template.
Preferably, the inner screw is a solid screw.
Preferably, the spike is the same diameter as the outer shank.
From the above description, the opposite-pulling screw rod provided by the invention is characterized in that the inner screw rod is sleeved in the cylindrical outer screw rod through screw threads to adjust the relative relationship between the outer screw rod and the inner screw rod, and the wedge block is arranged between the tip-shaped body and the body of the inner screw rod, so that the wedge block can be hinged at the rear end of the tip-shaped body through the compression spring and can be matched with the conical inclined surface at the front end of the outer screw rod, therefore, when the opposite-pulling screw rod is required to be arranged in a similar building template such as an inner steel template and an outer steel template of a thin-wall pier column, only the tip-shaped body is required to be used as the front end to penetrate into the inner side and the outer side of the building template, then the distance between the inner side and the outer side of the building template is adjusted through adjusting the relative relationship between the inner screw rod and the outer screw rod of the opposite-pulling screw rod, the outer screw rod or the inner screw rod is screwed forwards, the inner screw rod retreats backwards relative to the outer screw rod, so that the tapered inclined surface at the front end of the outer screw rod jacks up the wedge-shaped block arranged between the pointed body and the body, the outer screw rod is kept still, the inner screw rod retreats backwards until the rear end of the wedge-shaped block abuts against the inner side of the building template, then the large nut at the rear end of the outer screw rod is adjusted, the large nut abuts against the outer side of the building template, and the opposite-pulling screw rod is fastened on two sides of the building template, when the opposite-pulling screw rod needs to be disassembled when a wall is built, the wedge-shaped block is automatically closed under the action of the spring only by enabling the inner screw rod to move forwards relative to the outer screw rod, so that the wedge-shaped block is not subjected to the jacking force of the outer screw rod, the wedge-shaped block is closed, the wedge-shaped block is combined on the tapered inclined surface, the diameter of the wedge-shaped block closed on the tapered inclined surface is not larger than the diameter of the outer screw rod, the whole closed opposite-pulling screw rod is, factor of safety is high, demolishs the template efficiently to realize utilizing repeatedly of drawing the screw rod.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic structural view of a counter-pulling screw according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the head of a counter screw according to an embodiment of the invention;
FIG. 3 is a schematic front view of a head of a counter screw according to an embodiment of the invention;
wherein the reference numerals include: 1. the steel plate comprises an outer screw rod, 2 an inner screw rod, 3 a conical inclined surface, 4 a body, 5 a pointed body, 6 a wedge-shaped block, 7 a spring, 8 a large nut, 9 a wrench, 10 a handle, 11 an inner screw cap, 12 a building template, 13 and a channel steel back edge.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
Because the thin-wall pier is often hundreds of meters high, workers are very difficult to operate and dangerous when entering the cavity of the thin-wall pier to install the screw cap at the inner side of the split screw, and a high-altitude falling accident can happen due to carelessness, so that the traditional split bolt cannot be used for pulling the inner and outer templates of the hollow thin-wall pier wall body of the bridge.
In view of the above problems, the present invention provides a counter screw, and the following detailed description will be made of specific embodiments of the present invention with reference to the accompanying drawings.
The following description of the exemplary embodiment(s) is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
Fig. 1 and 2 are schematic views of the structure and the head section of a counter screw according to an embodiment of the present invention, respectively. As shown in fig. 1 and 2, the present invention provides a split screw, which includes an outer screw 1 and an inner screw 2, and the specific structures of the outer screw 1 and the inner screw 2 are not particularly limited, but in the present embodiment, the outer screw 1 has a cylindrical structure, the inner screw 2 has a solid screw, a tapered slope 3 is provided at the front end of the outer screw 1, and a thread is provided on the inner side of the outer screw 1, so that the inner screw 2 is inserted into the outer screw 1.
In the embodiment shown in fig. 1 and 2 together, the inner screw 2 comprises a body 4 and a pointed body 5 fixed at the front end of the body 4; in addition, a thread is also provided on the outer side of the body 4, and the body 4 penetrates through the outer bolt 1 and is screwed with the outer bolt 1, that is, the inner bolt 2 is screwed in the outer bolt 1 through the thread, and the specific thread sequence is not specifically limited, in this embodiment, rotating the inner bolt 2 counterclockwise causes the inner bolt 2 to retreat with respect to the outer bolt 1, causes the outer bolt 1 to advance with respect to the inner bolt 2, rotates the inner bolt 2 clockwise causes the inner bolt 2 to advance with respect to the outer bolt 1, causes the outer bolt 1 to retreat with respect to the inner bolt 2, and rotates the outer bolt clockwise is equivalent to rotating the inner bolt counterclockwise, which will not be described herein.
Fig. 3 is a schematic front view of a head of a counter screw according to an embodiment of the present invention. In the embodiment shown in common in fig. 1, 2 and 3, a wedge block 6 is arranged between the tip 5 and the body 4; the wedge-shaped block 6 can be hinged at the rear end of the pointed body 5 in an opening and closing mode through a compression spring and can be matched with the conical inclined surface 3, if the wedge-shaped block 6 is closed, the wedge-shaped block 6 is combined on the conical inclined surface 3, the diameter of the closed wedge-shaped block 6 on the conical inclined surface 3 is not larger than that of the outer screw rod 1, namely, the front end of the wedge-shaped block 6 is fixed at the rear end of the pointed body 5 and can be opened and closed to be fixed, namely, the wedge-shaped block 6 can be opened under the action of external force, the wedge-shaped block 6 can be closed without the action of external force, and is matched with the conical inclined surface 3 just after being closed, in the embodiment, the upper wedge-shaped block 6 and the lower wedge-shaped block 6 are arranged between the pointed body 5 and; the type and length of the body 4 and the pointed body 5 are not particularly limited, in this embodiment, the body 4 is longer than the outer screw rod 1 so as to adjust the relative position of the inner screw rod 2, the pointed body 5 is bullet-shaped so that the whole counter screw rod can conveniently penetrate into the hole of the building template 12, and the tail of the bullet-shaped pointed body 5 can conveniently abut against the wedge block 6 to provide an abutting fulcrum for the wedge block 6, meanwhile, in this embodiment, the diameter of the pointed body 5 is the same as that of the outer screw rod 1, so that the tail of the pointed body 5 can form a stable fulcrum for the wedge block 6, and the closed wedge block 6 can be conveniently matched with the tapered inclined surface 3 to form a smooth cylinder so that the counter screw rod can conveniently exit from the hole of the building template 12.
It should be noted that, the front and the back are opposite front and back, in this embodiment, one end of the pointed body 5 of the counter screw is taken as front, the other end is taken as back, in other words, the direction of inserting the counter screw is taken as the front end of the counter screw in this application, and the directions of all the accessories in the counter screw are all described in the above directions throughout.
In the embodiment shown collectively in fig. 1, 2 and 3, the outer side of the outer screw 1 is provided with a thread; a large nut 8 with threads is arranged at the rear part of the outer screw rod 1, and a spanner 9 is arranged at the outer side of the large nut 8 and is used for enabling the large nut 8 to be screwed with the outer side of the outer screw rod 1; the rear end of the outer screw rod 1 is provided with a handle 10, the handle 10 is used for screwing the outer screw rod 1, the rear end of the body 4 is provided with an inner screw cap 11, the inner screw cap 11 is used for adjusting the relative position of the inner screw rod 2, so that when the counter-pulling screw rod is required to be placed into a similar building template 12, namely an inner steel template and an outer steel template of a thin-wall pier stud, only a pointed body is required to be used as the front end to penetrate into the inner side and the outer side of the building template, and the outer screw rod 1 and the inner screw rod 2 penetrate through the inner side and the outer side of the building; and the inner and outer sides of the building template are provided with channel steel back edges 13, then the distance between the inner side and the outer side of the building template is adjusted by adjusting the relative relation of the inner screw and the outer screw of the screw thread, when the distance between the inner side and the outer side of the building template is determined, the outer screw is screwed forwards or the inner screw is screwed backwards, the conical inclined surface of the outer screw is made to advance relative to the inner screw, the inner screw is made to retreat relative to the outer screw, thereby the front end of the outer screw 1 supports the wedge 6, the wedge 6 is made to fasten the channel steel back edge 13 at the inner side of the building template 12, namely the conical inclined surface of the outer screw 1 jacks up the wedge 6 arranged between the pointed body 5 and the body 4, the wedge 6 is made to fasten the outer side of the building template 12 at the inner side, then the large nut 8 at the rear end of the outer screw 1 is adjusted, the large nut 8 is screw thread-screwed with the outer screw thread 1 to fasten the back steel edge at the outer side, and then the opposite-pulling screw rods are fastened on two sides of the building template.
In one embodiment shown in fig. 1, 2 and 3, the reinforced concrete construction of the hollow thin-wall pier high pier column wall of the highway bridge is taken as an example, and the pier isThe height of the column is 162 meters, the net thickness of the thin-wall pier wall is 0.6 meter, the building template 12 is a shaped steel template, the thickness of the steel template is 4mm, and the back edge 13 of the channel steel is I12The channel steel, the outer screw 1 and the inner screw 2 of the split screw are made of Q235 steel, the length of the outer screw 1 can be 70-80 cm, the outer diameter can be 20-30mm, the wall thickness can be 3-5mm, the diameter of the inner screw can be 15-20mm, the length can be 80-90mm, in this embodiment, the length of the outer screw 1 is 70 cm, the outer diameter is 24mm, the wall thickness is 3mm, the diameter of the inner screw is 18mm, the length is 80mm, each of the two wedge blocks 6 is 40mm, the width is 10mm, the inner and outer bolts are all screwed, the handle 10 is welded at the rear end of the outer screw 1, the inner nut 11 is welded at the rear end of the inner screw 2, and the handle 10 adopts a ring-shaped handle to prevent the handle 10 from obstructing the rotation of the inner nut 11, the split screw is installed according to the split screw layout designed by the construction scheme, so that the steel-shaped body of the split bolt penetrates into the template hole of the sharp board, the inner screw cap 11 is rotated counterclockwise to move the inner screw 2 backward relative to the outer screw 1, so that the outer screw 1 pushes (springs) the wedge 6 provided on the inner screw 2 open, and the wedge 6 is fastened on the back edge of the channel steel on the inner side of the high pier stud wall, then the wrench 9 is rotated to drive the large nut 8 to screw on the outer screw 1, the large nut 8 is screwed, so that the large nut is fastened on the back edge of the channel steel on the outer side of the high pier stud wall, then the space between the steel templates on the inner side and the transverse steel bar support (the contact part between the two ends of the steel bar support and the inner side of the steel template is provided with a special cushion block) are checked, the foam plastic is sprayed on the surface of the split bolt between the steel templates, then the concrete is poured, the template is removed after necessary time, the inner screw cap 11 on the tail part of the bolt 2 is rotated clockwise, so that the front end of the inner screw 2 advances towards the outer screw 1, and the pushing force of the wedge 6 by the, the wedge block 6 is automatically closed under the action of the spring, and then the wedge block 6 is closed to form a cylinder with the same diameter as the outer screw rod 1 after being in the original state, so that the annular handle 10 is held, the cylinder is outwards pulled out, the counter-pull screw rods are completely pulled out, and the foam plastics and sundries on the counter-pull screw rods are cleaned for next reuse.
The invention provides a split screw, which is characterized in that an inner screw thread is sleeved in a cylindrical outer screw to adjust the relative relation between the outer screw and the inner screw, a wedge block is arranged between a pointed body and a body of the inner screw, the wedge block can be hinged at the rear end of the pointed body through a compression spring and can be matched with a conical inclined plane of the outer screw, so that when the split screw is required to be arranged in a similar building template such as an inner steel template and an outer steel template of a thin-wall pier stud, only the pointed body is required to be used as the front end to penetrate into the inner side and the outer side of the building template, then the distance between the inner side and the outer side of the building template is adjusted by adjusting the relative relation between the inner screw thread and the outer screw thread, the outer screw thread is screwed forwards or backwards, the conical inclined plane of the outer screw thread moves forwards relative to the outer screw thread, and the inner screw thread retreats relative to the outer screw thread, so that the taper slope of the outer screw rod jacks up the wedge block arranged between the pointed body and the body, then the outer screw rod is kept still, the inner screw rod retreats until the rear end of the wedge block abuts against the inner side of the building template, then the large nut at the rear end of the outer screw rod is adjusted to abut against the outer side of the building template, and then the opposite-pull screw rods are fastened at the two sides of the building template, when the opposite-pull screw rods need to be dismounted when a wall is built, the wedge block is free from the jacking force of the outer screw rod by only enabling the inner screw rod to move forwards relative to the outer screw rod, and the wedge block is automatically closed under the action of the spring to enable the wedge block to be closed to the original state, so that the wedge block is closed to be a cylinder with the diameter not larger than that of the opposite-pull screw rods, the whole closed opposite-pull screw rod is pulled out of the building template, and the opposite-pull screw rod can be dismounted under the building template without, and the repeated utilization of the pull screw rod is realized.
The counter-pulling screw according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the counter screw of the invention as set forth above without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. The counter-pull screw rod is characterized by comprising an outer screw rod and an inner screw rod, wherein,
the outer screw rod is in a cylindrical structure and is provided with a screw hole,
a conical inclined plane is arranged on the outer side of the front end of the outer screw rod, and threads are arranged on the inner side of the outer screw rod;
the inner screw comprises a body and a pointed body fixed at the front end of the body; and the number of the first and second electrodes,
threads are also arranged on the outer side of the body, and the body penetrates through the outer screw rod and is screwed with the outer screw rod;
a wedge-shaped block is arranged between the pointed body and the body;
the wedge block can open and shut through compression spring and articulate in the rear end of prong, if the wedge block is closed, the wedge block merges and closes on the awl inclined plane, and the diameter that the wedge block is closed on the awl inclined plane is not more than the diameter of outer screw rod.
2. Counter-pulling screw according to claim 1,
the body is longer than the outer screw rod.
3. Counter-pulling screw according to claim 1,
the pointed body is bullet-shaped.
4. Counter-pulling screw according to claim 1,
the outer side of the outer screw rod is provided with threads;
a large nut with threads is arranged at the rear part of the outer screw rod;
and a spanner is arranged on the outer side of the large nut and used for adjusting the relative position of the large nut and the outer side of the outer screw rod.
5. Counter-pulling screw according to claim 4,
the rear end of the outer screw rod is provided with a handle which is used for screwing the outer screw rod.
6. Counter-pulling screw according to claim 5,
an inner nut is arranged at the rear end of the body and used for adjusting the inner screw rod.
7. Counter-pulling screw according to claim 6,
the outer screw rod and the inner screw rod penetrate through the inner side and the outer side of the building template;
and channel steel back ridges are arranged on the inner side and the outer side of the building template.
8. Counter-pulling screw according to claim 7,
if the wedge-shaped block is opened, the rear end of the pointed body supports the wedge-shaped block, so that the wedge-shaped block is fastened on a channel steel back edge on the inner side of the building template;
the large nut and the outer screw rod are screwed together to fasten the channel steel back edge on the outer side of the building template.
9. Counter-pulling screw according to any one of claims 1 to 8,
the inner screw is a solid screw.
10. Counter-pulling screw according to claim 1,
the pointed body and the outer screw rod have the same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313178.3A CN112342927A (en) | 2020-11-20 | 2020-11-20 | Opposite-pulling screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011313178.3A CN112342927A (en) | 2020-11-20 | 2020-11-20 | Opposite-pulling screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112342927A true CN112342927A (en) | 2021-02-09 |
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ID=74364526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011313178.3A Pending CN112342927A (en) | 2020-11-20 | 2020-11-20 | Opposite-pulling screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112342927A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550567A (en) * | 2021-07-06 | 2021-10-26 | 北京建工一建工程建设有限公司 | Plastic formwork reinforcing system |
| CN115419254A (en) * | 2022-08-24 | 2022-12-02 | 西安鸿发建筑工程有限公司 | Efficiency-improving and consumption-reducing aluminum formwork and construction method thereof |
-
2020
- 2020-11-20 CN CN202011313178.3A patent/CN112342927A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550567A (en) * | 2021-07-06 | 2021-10-26 | 北京建工一建工程建设有限公司 | Plastic formwork reinforcing system |
| CN115419254A (en) * | 2022-08-24 | 2022-12-02 | 西安鸿发建筑工程有限公司 | Efficiency-improving and consumption-reducing aluminum formwork and construction method thereof |
| CN115419254B (en) * | 2022-08-24 | 2024-02-27 | 西安鸿发建筑工程有限公司 | Synergistic consumption-reducing aluminum template and construction method thereof |
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