CN210069270U

CN210069270U - Embedded bolt

Info

Publication number: CN210069270U
Application number: CN201920402341.XU
Authority: CN
Inventors: 方美财; 刘瑛; 张燕科
Original assignee: Neutralizing Huafeng Construction Co Ltd
Current assignee: Neutralizing Huafeng Construction Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-02-14
Anticipated expiration: 2029-03-27

Abstract

The utility model discloses a pre-buried bolt, which comprises a bolt body and an installation nut, wherein the pre-buried bolt also comprises a fixing nut, a threaded hole which is in threaded fit with the bolt body is arranged in the fixing nut, the whole fixing nut is in conical arrangement, the outer side wall of the fixing nut is arranged on a disassembly thread, and a tool groove is arranged on the end surface of one end with large diameter of the fixing nut; the bolt body is integrally provided with a tool section with a cross section in a regular hexagon shape, and the two ends of the tool section are respectively provided with an external thread section matched with the mounting nut and an internal thread section matched with the threaded hole. When the concrete is pre-buried, the internal thread section and the fixing nut are simultaneously poured by concrete, the end part of the fixing nut is ensured to be exposed outside the concrete during pouring, and the prefabrication is finished after the concrete is solidified. Need not to use the back, rotate the instrument section through the instrument and roll out the bolt body, then use with tool groove complex spanner class instrument, also roll out fixation nut can.

Description

Embedded bolt

Technical Field

The utility model relates to a construction screw technical field, in particular to pre-buried bolt.

Background

The embedded bolts, also called foundation bolts, are steel members which are used for fixing equipment in equipment installation and are fixed by cement in advance, namely the foundation bolts are prefabricated in a cement foundation in advance on the equipment foundation.

Chinese patent with publication number CN 207878663U and application date of 2018, 1, 29 discloses an embedded bolt, which comprises an embedded bolt main body, wherein one end of the embedded bolt main body is bent to 90 °, two spaced positioning plates are mounted at the other end of the embedded bolt main body, and an adjusting nut is further mounted on the embedded bolt main body at the opposite side of the positioning plates.

It is through adopting the crooked setting of one end, can not pulled out when the guarantee buried bolt that can be fine reuses and destroy, but relatively, this structural setting leads to it to become disposable product, can't retrieve it after the construction is accomplished and recycle, leads to steel extravagant.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pre-buried bolt, it has the characteristics that can retrieve and reuse when guaranteeing to be difficult for being extracted the destruction.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an embedded bolt comprises a bolt body and an installation nut, and further comprises a fixing nut, wherein a threaded hole is formed in the fixing nut, the whole fixing nut is in a conical arrangement, the outer side wall of the fixing nut is provided with a disassembly thread, and a tool groove is formed in the end face of one end of the fixing nut with a large diameter; the bolt body is integrally provided with a tool section with a cross section in a regular hexagon shape, and two ends of the tool section are respectively provided with an external thread section matched with the mounting nut and an internal thread section matched with the threaded hole.

So set up, before pre-buried, install fixation nut on the internal thread section earlier, during the installation, the one end that is equipped with the instrument groove is towards the tool section to make it be close or support the tool section, then with internal thread section and fixation nut simultaneously with concrete placement, during the pouring, ensure that fixation nut's tip exposes outside the concrete, treat that the concrete solidifies the back and accomplish the prefabrication promptly, when needing to fix equipment, insert equipment on the external thread section then install mounting nut and screw up can. Need not to use the back, rotate the instrument section through the instrument and roll out the bolt body, then use with tool groove complex spanner class instrument, also roll out fixation nut can.

More preferably: the spiral direction of the threads on the internal thread section and the external thread section is the same.

So set up, avoid mounting nut to lead to the bolt body to take place to rotate when screwing up.

More preferably: the removal thread is formed by a threaded groove provided on the fixing nut.

More preferably: the removal thread is formed by a thread protrusion provided on the fixing nut.

More preferably: the spiral direction of the disassembly thread is the same as the spiral direction of the thread on the external thread section.

So set up, avoid mounting nut damage or destroy connection structure between fixation nut and concrete when screwing up.

More preferably: and a plastic pipe is inserted into the internal thread section, and the sum of the length of the plastic pipe and the length of the fixing nut is greater than or equal to the length of the internal thread section.

So set up, when concrete placement, direct contact can not take place for the internal thread section with the concrete to it is comparatively easy when dismantling the bolt body.

More preferably: the plastic pipe at least comprises two sections, a reinforcing nut is arranged between every two adjacent plastic pipes, and the reinforcing nut is in threaded fit with the internal thread section.

So set up, through the setting of reinforcement nut can consolidate the joint strength between bolt body and concrete, simultaneously, can shorten fixation nut's length for fixation nut's dismantlement is easier.

More preferably: the outer diameter of the reinforcing nut is larger than that of the plastic pipe.

So set up, improve the connection area between reinforcement nut and concrete, make joint strength higher.

To sum up, the utility model discloses following beneficial effect has: the tool section and the fixing nut are arranged to ensure that the tool section and the fixing nut are not easy to pull out and damage, and the tool section and the fixing nut are capable of being recycled.

Drawings

Fig. 1 is a schematic structural view of a pre-buried bolt and concrete of the first embodiment after prefabrication;

FIG. 2 is a schematic structural diagram according to the first embodiment;

FIG. 3 is a schematic structural view of the second embodiment;

FIG. 4 is a schematic structural diagram of the third embodiment.

In the figure, 1, a bolt body; 11. an external threaded section; 12. an internal thread section; 2. a tool section; 3. mounting a nut; 4. fixing a nut; 41. disassembling the threads; 42. a tool slot; 5. a plastic tube; 6. and (5) reinforcing the nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: an embedded bolt, as shown in fig. 1, comprises a bolt body 1, a mounting nut 3 and a fixing nut 4.

A tool section 2 is integrally arranged on the bolt body 1, the tool section 2 divides the bolt body 1 into an internal thread section 12 and an external thread section 11, wherein the length of the internal thread section 12 is larger than that of the external thread section 11. Referring to fig. 2, the tool section 2 is regular hexagonal in cross-section.

As shown in fig. 1, the mounting nut 3 is threaded onto the externally threaded section 11. A threaded hole in threaded fit with the inner bolt section is formed in the fixing nut 4, and the fixing nut 4 is connected with the inner thread section 12 through the threaded hole.

The fixing nut 4 is provided with a conical shape as a whole, and as shown in fig. 2, the removal thread 41 is provided on the outer side wall of the fixing nut 4, and in this embodiment, the removal thread 41 is formed by a thread groove provided on the fixing nut 4, and besides, the removal thread 41 can be formed by providing a thread protrusion.

Referring to fig. 2, a tool groove 42 is formed in an end surface of the fixing nut 4 having a large diameter, and the tool groove 42 is a straight groove.

As shown in fig. 2, the thread direction of the female screw section 12 is the same as that of the male screw section 11, and the thread direction of the removal thread 41 is the same as that of the male screw section 11.

The use method comprises the following steps: before pre-embedding, the fixing nut 4 is firstly installed on the internal thread section 12, during installation, one end provided with the tool groove 42 faces the tool section 2 and is close to or props against the tool section 2, then the internal thread section 12 and the fixing nut 4 are simultaneously poured by concrete, during pouring, the end part of the fixing nut 4 is ensured to be exposed outside the concrete, and prefabrication is completed after the concrete is solidified.

When the equipment needs to be fixed, the equipment is inserted into the external thread section 11, and then the mounting nut 3 is mounted and screwed.

After the bolt body 1 is not needed to be used, the tool section 2 is rotated by a tool, and then the wrench type tool matched with the tool groove 42 is used to rotate the fixing nut 4.

Example 2: as shown in fig. 3, the difference from embodiment 1 is that: a plastic tube 5 is inserted into the internal thread 12, the sum of the length of the plastic tube 5 and the length of the fastening nut 4 being equal to the length of the internal thread 12, and accordingly the length of the plastic tube 5 can be set longer, but it is necessary to avoid setting it too short.

With this arrangement, the internal thread section 12 does not come into direct contact with concrete when concrete is poured, so that it is easy to disassemble the bolt body 1.

Example 3: as shown in fig. 4, the difference from embodiment 1 is that: the plastic pipe 5 is inserted into the internal thread section 12, and the plastic pipe 5 is provided with two sections, wherein the plastic pipe 5 can be provided with three, four or more sections, and two sections are taken as an example in the embodiment. A reinforcing nut 6 is arranged between the two sections of the plastic pipe 5, the reinforcing nut 6 is in threaded connection with the internal thread section 12, and the outer diameter of the reinforcing nut 6 is larger than that of the plastic pipe 5.

Wherein the sum of the length of the two plastic tubes 5, the width of the reinforcing nut 6 and the length of the fixing bolt is the same as the length of the internally threaded section 12.

In this embodiment, the internal thread section 12 does not come into direct contact with concrete during concrete pouring, so that it is easy to disassemble the bolt body 1, and the reinforcing nut 6 is fixed by pouring together during concrete pouring, so that it is possible to reinforce the axial connection strength of the bolt body 1.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims

1. The utility model provides a buried bolt in advance, includes bolt body (1) and mounting nut (3), characterized by: the embedded bolt also comprises a fixing nut (4), a threaded hole is formed in the fixing nut (4), the whole fixing nut is arranged in a conical shape, the outer side wall of the fixing nut (4) is provided with a dismounting thread (41), and a tool groove (42) is formed in the end face of one end of the fixing nut (4) with the large diameter; the bolt is characterized in that a tool section (2) with a cross section in a regular hexagon shape is integrally arranged on the bolt body (1), and an external thread section (11) matched with the mounting nut (3) and an internal thread section (12) matched with the threaded hole are respectively arranged at two ends of the tool section (2).

2. The embedded bolt of claim 1, wherein: the spiral direction of the threads on the internal thread section (12) and the external thread section (11) is the same.

3. The embedded bolt of claim 1, wherein: the removal thread (41) is formed by a thread groove provided on the fixing nut (4).

4. The embedded bolt of claim 1, wherein: the removal thread (41) is formed by a thread projection provided on the fixing nut (4).

5. The embedded bolt according to any one of claims 1 to 4, wherein: the screw direction of the dismounting screw (41) is the same as that of the screw thread on the external screw thread section (11).

6. The embedded bolt of claim 5, wherein: a plastic pipe (5) is inserted into the internal thread section (12), and the sum of the length of the plastic pipe (5) and the length of the fixing nut (4) is greater than or equal to the length of the internal thread section (12).

7. The embedded bolt of claim 6, wherein: the plastic pipe (5) at least comprises two sections, a reinforcing nut (6) is arranged between every two adjacent plastic pipes (5), and the reinforcing nut (6) is in threaded fit with the internal thread section (12).

8. The embedded bolt of claim 7, wherein: the outer diameter of the reinforcing nut (6) is larger than that of the plastic pipe (5).