CN111236646A

CN111236646A - Drawknot embedded bolt

Info

Publication number: CN111236646A
Application number: CN201811442492.4A
Authority: CN
Inventors: 董春发
Original assignee: Jiangxi Yijie Building Materials Co ltd
Current assignee: Jiangxi Yijie Building Materials Co ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-06-05

Abstract

The invention provides a drawknot embedded bolt, which comprises a bolt, a positioning sleeve and a fixing part, and is characterized in that: the fixing part comprises a first plane, a second plane and an arc surface, the first plane is provided with a threaded blind hole, and the arc surface is provided with a fixing hole; one end of the bolt is connected with the threaded blind hole on the fixed part; the positioning sleeve is sleeved on the bolt. The bolt and the fixing part can be detached after use, can be recycled, and is beneficial to environmental protection and cost saving. The invention has simple structure, convenient disassembly and assembly and convenient use.

Description

Drawknot embedded bolt

Technical Field

The invention relates to the field of building template scaffolds, in particular to a drawknot embedded bolt.

Background

Before the concrete wall is poured, the structure of the wall or the beam needs to be restrained by using the templates, and the thickness of the wall or the beam is limited mainly by using the distance between the templates. In order to keep the distance between the formworks constant, the formworks are generally fixed by using a through-wall screw. In the corner near the floor slab, the traditional method for fixing the formwork is to place a cement strip between two vertical formworks, and then to tighten and fix the outer formwork by using a wire or a screw, i.e. the distance between the formwork is fixed by the combined action of the cement strip and the wire (or the screw). With the development of the technology, some tie-embedded bolts which are more convenient to use and have more comprehensive functions appear.

The utility model patent of the utility model discloses a multi-functional drawknot buried bolt is disclosed for CN206457939U like the bulletin number, this multi-functional drawknot buried bolt need not to use the cement strip location, still can realize hanging functions such as wire rope, installation fastener. However, after the concrete is poured and the formwork is removed, the positioning and connecting nuts are buried in the concrete (concrete), the bottom surface of the right-angle member is exposed out of the concrete (concrete), and the nails for fixing the embedded bolts are clamped in the right-angle member. The positioning connection screw and the female right-angle component cannot be recycled, so that the loss is more, and the cost is increased. Nails are not easily removed and the right angle components and nails (typically iron) are susceptible to rusting, which can affect subsequent finishing.

Disclosure of Invention

The invention aims to provide a drawknot embedded bolt so as to simplify the structure of the existing embedded bolt, facilitate the use and save the cost.

The invention adopts the following technical scheme:

the utility model provides a drawknot embedded bolt, includes bolt, position sleeve and fixed part, its characterized in that: the fixing part comprises a first plane, a second plane and an arc surface, the first plane is provided with a threaded blind hole, and the arc surface is provided with a fixing hole; one end of the bolt is connected with the threaded blind hole on the fixed part; the positioning sleeve is sleeved on the bolt. The fixing hole on the cambered surface of the fixing part is a through hole which penetrates from the cambered surface to the second plane. When the fixing part is used, the second plane of the fixing part is in contact with the top template, the arc surface faces upwards, the first plane is flush with the edge of the top template, and nails are nailed from the fixing holes to enable the fixing part to be connected with the top template. The locating sleeve is interposed between the sideform and the fixing member to limit the distance of the sideform from the first plane of the fixing member. The first plane of the fixed part faces the side template, and the side template is provided with a hole for a bolt to pass through; one end of the bolt penetrates through the positioning sleeve from the hole of the side template and is inserted into the threaded blind hole of the fixing piece, so that the bolt is in threaded connection with the threaded blind hole; the other end of the bolt is exposed outside the side template and can be used for connecting other components such as a fastening nut and the like. After the concrete is poured and solidified, the bolt can be firstly detached, and then the top template is detached; because the fixing part comprises the cambered surface, the binding force of the cambered surface and the concrete is weak, and the binding force of the nail and the top template is strong, the fixing part can be detached together with the top template, and the detachment of the bolt and the fixing part is completed.

Furthermore, the edge of the cambered surface of the fixing part is provided with a notch, and the fixing hole is arranged on the notch. The gap is provided to facilitate striking of the nail with a tool (e.g., a hammer) to make it easier to drive the nail.

Furthermore, the number of the gaps is three, and each gap is provided with one fixing hole.

Furthermore, the positioning sleeve is made of plastic.

Further, one end of the bolt is provided with a flat structure, a square structure or a hexagonal structure. Flat, square or hexagonal configurations are used to mate with a removal tool (e.g., a power wrench) for quick removal.

Furthermore, the bolt and the fixing part are both made of metal. Preferably, the bolt and the fixing part are both made of steel.

The invention has the beneficial effects that: the bolt and the fixing part can be detached after use, can be recycled, and is beneficial to environmental protection and cost saving. The invention has simple structure, convenient disassembly and assembly and convenient use.

Drawings

Fig. 1 is a schematic structural view of a fixing member of a drawknot embedded bolt.

Fig. 2 is a second schematic structural view of the fixing member of the drawknot embedded bolt.

Fig. 3 is a schematic structural view of a positioning sleeve of a drawknot embedded bolt.

Fig. 4 is a schematic structural view of a screw for tying the embedded bolt.

Fig. 5 is a schematic structural view of the drawknot embedded bolt.

Fig. 6 is a schematic view of a use scene of the drawknot embedded bolt.

In the figure, 1-bolt, 101-thread, 102-flat structure, 2-locating sleeve, 3-fixing component, 301-first plane, 302-second plane, 303-cambered surface, 304-thread blind hole, 305-fixing hole, 306-gap, 4-top template, 5-beam or wall inner template, 6-beam bottom template, 7-beam or wall outer template.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1 to 5, the drawknot embedded bolt of the invention is composed of a bolt 1, a positioning sleeve 2 and a fixing part 3. The fixing part 3 comprises a first plane 301, a second plane 302 and an arc surface 303, wherein the first plane 301 and the second plane 302 are perpendicular to each other, and the arc surface 303 is respectively intersected with the first plane 301 and the second plane 302; on the first plane 301 of the fixing part 3, a threaded blind hole 304 is formed inwards perpendicular to the first plane 301, the threaded blind hole 304 does not penetrate through, and the threaded blind hole 304 is matched with the bolt 1; three notches 306 are formed in the arc surface 303 of the fixing component 3 at the edge close to the second plane 302, fixing holes 305 are respectively formed in the notches 306, and the fixing holes 305 penetrate through to the second plane 302. Both end surfaces of the bolt 1 are provided with threads 101, and the threads 101 are matched with the threaded blind holes 304 of the fixing member 3.

The bolt 1 and the fixing part 3 are both made of steel; one end of the bolt 1 is provided with a flat structure 102. The positioning sleeve 2 is of a cylindrical structure and is made of plastic.

As shown in fig. 6, when the above-described anchor stud is used, the second flat surface 302 of the fixing member 3 is in contact with the top form 4, the first flat surface 301 of the fixing member 3 is flush with the beam inner form 5, and the fixing member 3 is fixed to the top form 4 by driving nails into the three fixing holes 305 of the fixing member 3. The positioning sleeve 2 is used for limiting the distance between the beam outer side formwork 7 and the beam inner side formwork 5, and the length of the positioning sleeve 2 is equal to the distance between the beam outer side formwork 7 and the beam inner side formwork 5; one end of the positioning sleeve 2 is abutted against the first plane 301 of the fixing part 3, and the other end is abutted against the beam outer formwork 7. A hole for the bolt 1 to pass through is formed in the beam outer side template 7, one end of the bolt 1 penetrates through the hole of the beam outer side template 7, then penetrates through the positioning sleeve 2, is inserted into the threaded hole of the fixing part 3 and is connected together through threads; the other end of the bolt 1 is exposed outside the beam outer side formwork 7 and can be used for connecting other components such as a fastening nut and the like. After the drawknot embedded bolt is installed, concrete can be poured, and the positioning sleeve 2 and the fixing part 3 are covered by the concrete. After the concrete is solidified, firstly disassembling the bolt 1 (the bolt 1 is protected by the sleeve and is isolated from the concrete), and then disassembling the template; when the top mold plate 4 is removed, the fixing member 3 is removed together with the nail. The disassembled bolt 1 and the fixed part 3 can be recycled.

Claims

1. The utility model provides a drawknot embedded bolt, includes bolt, position sleeve and fixed part, its characterized in that: the fixing part comprises a first plane, a second plane and an arc surface, the first plane is provided with a threaded blind hole, and the arc surface is provided with a fixing hole; one end of the bolt is connected with the threaded blind hole on the fixed part; the positioning sleeve is sleeved on the bolt.

2. The drawknot embedded bolt of claim 1, wherein: the edge of the cambered surface of the fixed part is provided with a notch, and the fixed hole is arranged on the notch.

3. The drawknot embedded bolt of claim 2, wherein: the number of the openings is three, and each opening is provided with a fixing hole.

4. The drawknot embedded bolt of claim 1, wherein: the positioning sleeve is made of plastic.

5. The drawknot embedded bolt of claim 1, wherein: one end of the bolt is provided with a flat structure, a square structure or a hexagonal structure.

6. The drawknot embedded bolt of claim 1, wherein: the bolt and the fixing part are both made of metal.

7. The drawknot embedded bolt of claim 6, wherein: the bolt and the fixing part are both made of steel.