CN217268894U - Special-shaped split screw - Google Patents
Special-shaped split screw Download PDFInfo
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- CN217268894U CN217268894U CN202121408780.5U CN202121408780U CN217268894U CN 217268894 U CN217268894 U CN 217268894U CN 202121408780 U CN202121408780 U CN 202121408780U CN 217268894 U CN217268894 U CN 217268894U
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Abstract
A heterotypic split screw for drawknot both sides template includes: the surface is equipped with screw rod (1) of external screw thread (11), external screw thread (11) set up in one end side of screw rod (1), and middle section (12) that lie in between the template of both sides of this screw rod (1) set up to be close to one side diameter of external screw thread (11) is less, the great part cone of opposite side diameter, and this middle section (12) surface is smooth. The utility model discloses an abnormal shape is to drawing screw need not to install the rubber tube when connecting the both sides template, need not also pull out the rubber tube afterwards, and construction convenient and fast more.
Description
Technical Field
The utility model relates to a building structure's connecting device especially relates to a structural improvement to drawing screw for drawknot wall body both sides template.
Background
In the prior art, building templates on two sides of a wall or a column are usually connected by a method of matching a traditional high-tension screw with a glue tube, as shown in fig. 2, the whole screw rod of the high-tension screw 92 is provided with external threads, so that a rubber tube 93 needs to be matched to facilitate demoulding. As shown in fig. 1, the construction process comprises: firstly, mounting a side template 91; secondly, a high tension screw 92 is inserted; thirdly, a rubber tube 93 is inserted into the high-tension screw 92; fourth, another sideform 94 is installed; fifthly, pouring concrete of the partition wall 95 between the formworks on the two sides; sixthly, disassembling the high tension screw 92; seventhly, detaching a side template 94; eighthly, detaching the other side template 91; and step nine, pulling the rubber tube 93 out of the partition wall 95 for recycling.
The above conventional methods have the following disadvantages: 1. the requirement on the sequence of installing the templates is met, otherwise, the rubber pipe cannot be installed; 2. after the die is removed, the rubber tube is required to be pulled out from the partition wall. Therefore, the traditional method is troublesome in construction and labor-consuming because of the procedures of installing the rubber tube and pulling out the rubber tube after the rubber tube is installed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a construction convenient and fast's abnormal shape is to drawing screw.
The utility model provides a technical scheme that above-mentioned technical problem adopted is, the manufacturing and designing heterotypic is to drawing the screw for drawknot both sides template, include: the surface of the screw is provided with an external thread, the external thread is arranged at one end side of the screw, the middle section of the screw, which is positioned between the templates at two sides, is arranged to be a partial cone which is close to the external thread and has a smaller diameter at one side and a larger diameter at the other side, and the surface of the middle section is smooth.
The end part of the screw rod outside the external thread is provided with a hardened end with a square cross section after quenching hardening, and the side length of the cross section of the hardened end is smaller than the diameter of the screw rod at the external thread.
The diameter difference of the two ends of the middle section of the screw rod is 10-16 mm.
The diameter of one end of the middle section of the screw is 32-38 mm, and the diameter of the other end of the middle section of the screw is 19-25 mm.
The diameter of the screw at the external thread is smaller than that of the end with the smallest diameter of the middle section.
The length of the external thread on the screw rod is 155-175 mm, and the length of the hardening end is 18-22 mm.
Compared with the prior art, the special-shaped split screw of the utility model does not need to additionally use a rubber tube when connecting the templates at two sides, and correspondingly does not have the procedure of pulling out the rubber tube, thereby being more convenient and saving the construction time; in addition, the installation sequence of the two side templates is not required, and the templates can be installed first, so that the method is very convenient in construction, and the installation sequence of the templates can be adjusted according to the actual situation of a construction site.
Drawings
FIG. 1 is a schematic view of a conventional high tension screw fitted through-glue connection template;
FIG. 2 is a schematic diagram of a conventional high-tension screw with a glue tube;
FIG. 3 is a schematic structural view of the special-shaped split screw of the present invention;
fig. 4 is a schematic view of the special-shaped split screw connection template of the present invention.
Detailed Description
The present invention will be described in more detail with reference to the embodiments shown in the drawings.
The utility model discloses a heterotypic split screw mainly used drawknot wall body, building structures's such as cylinder both sides template, as shown in fig. 3, it mainly includes screw rod 1, uses together such as cooperation nut 2 and gasket 3. One end of the screw rod 1 can be fixedly provided with a head 4 which is convenient for a worker to hold to rotate the screw rod, the side surface of the other end of the screw rod 1 is provided with an external thread 11, and the nut 2 and the gasket 3 are arranged on one side of the external thread 11.
The utility model discloses a special character lies in: the middle section 12 of the screw 1 is a partial cone with a smaller diameter at one side and a larger diameter at the other side close to the external thread 11, and the surface of the middle section 12 is smooth. As shown in fig. 4, the middle section 12 is a portion of the screw 1 located between the two side forms 5 when the two side forms 5 are connected.
As shown in fig. 3, the end of the screw 1 outside the external thread 11 is provided with a hardened end 13 hardened by quenching, and in the present embodiment, the cross section of the hardened end 13 is square, and the side length of the square is smaller than the diameter of the screw 1 at the external thread 11. The purpose of this treatment is: because the end part of the screw is required to be frequently hit by a tool when the screw of the utility model is disassembled, the screw is designed to be square and hardened by quenching, and the screw is not easy to deform when being hit, thereby facilitating the penetration of the nut.
The diameter of one end of the middle section 12 of the screw rod 1 is 32-38 mm, the diameter of the other end of the middle section 12 of the screw rod 1 is 19-25 mm, the difference between the diameters of the two ends is 10-16 mm, and the diameter of the screw rod 1 at the outer thread 11 is smaller than that of the end with the smallest diameter of the middle section 12. The middle section 12 of the screw 1 has different lengths according to the distance between the two side templates 5, the length of the external thread 11 on the screw 1 is 155-175 mm, and the length of the hardened end 13 is 18-22 mm.
In this embodiment, the diameter of the larger end of the middle section 12 is 35 mm, the diameter of the smaller end is 22 mm, the diameter of the external thread 11 is 20 mm, the length of the external thread 11 on the screw rod 1 is 165 mm, and the length of the hardened end 13 is 20 mm.
As shown in FIG. 4, the utility model discloses a construction process of abnormal shape split screwed connection both sides template as follows:
firstly, mounting a template 5 on one side;
secondly, installing a template 5 on the other side;
thirdly, the special-shaped split screw of the utility model is penetrated;
fourthly, pouring concrete 6 of the partition wall between the formworks on the two sides;
fifthly, knocking the hardened end of the special-shaped split screw by a tool to remove the hardened end of the special-shaped split screw from the partition wall;
and sixthly, dismantling the two side plate molds 5.
Therefore, the utility model discloses an abnormal shape is to drawing screw need not additionally to use the rubber tube again, although concrete 6 between the both sides template 5 can glue together with the screw after solidifying, nevertheless only need strike with the instrument at a side end (hardening end 13 promptly) that screw rod 1 is close to external screw thread 11 during form removal and can make and break away from between screw and the concrete, conveniently demolish the screw, need not to install the rubber tube and this twice process of later stage rubber tube drawing, the construction is very convenient and fast, and the order of template installation and demolising does not have the requirement, the construction of being convenient for.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A heterotypic split screw for drawknot both sides template includes: the surface is equipped with screw rod (1) of external screw thread (11), its characterized in that:
the external thread (11) is arranged at one end side of the screw (1), a middle section (12) of the screw (1) between the templates at two sides is a partial cone with a smaller diameter at one side and a larger diameter at the other side close to the external thread (11), and the surface of the middle section (12) is smooth.
2. The special-shaped counter-pulling screw according to claim 1, characterized in that: the end part of the screw (1) outside the external thread (11) is provided with a hardened end (13) which is hardened by quenching and has a square cross section, and the side length of the cross section of the hardened end (13) is smaller than the diameter of the screw (1) at the external thread (11).
3. The special-shaped counter-pulling screw according to claim 1 or 2, characterized in that: the diameter difference of the two ends of the middle section (12) of the screw (1) is 10-16 mm.
4. The special-shaped counter-pulling screw according to claim 3, characterized in that: the diameter of one end of the middle section (12) of the screw (1) is 32-38 mm, and the diameter of the other end is 19-25 mm.
5. The special-shaped counter-pulling screw according to claim 3, characterized in that: the diameter of the screw (1) at the external thread (11) is smaller than that of the end with the smallest diameter of the middle section (12).
6. The special-shaped counter-pulling screw according to claim 2, characterized in that: the length of the external thread (11) on the screw (1) is 155-175 mm, and the length of the hardening end (13) is 18-22 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121408780.5U CN217268894U (en) | 2021-06-24 | 2021-06-24 | Special-shaped split screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121408780.5U CN217268894U (en) | 2021-06-24 | 2021-06-24 | Special-shaped split screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217268894U true CN217268894U (en) | 2022-08-23 |
Family
ID=82852222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121408780.5U Active CN217268894U (en) | 2021-06-24 | 2021-06-24 | Special-shaped split screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217268894U (en) |
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2021
- 2021-06-24 CN CN202121408780.5U patent/CN217268894U/en active Active
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