CN219220973U

CN219220973U - Tensile post-pulling bottom expanding mechanical anchor bolt

Info

Publication number: CN219220973U
Application number: CN202223493721.XU
Authority: CN
Inventors: 王媚
Original assignee: Shaanxi Yijiu'an Seismic Support Technology Co ltd
Current assignee: Shaanxi Yijiu'an Seismic Support Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-20
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to the technical field of anchor bolts, in particular to a tensile post-pulling bottom expanding mechanical anchor bolt which comprises a threaded rod, wherein the top of the threaded rod is fixedly connected with the bottom of a block body, a lug is arranged on the outer side of the threaded rod, an expanding structure is arranged on the outer side of the threaded rod, the expanding structure comprises a sleeve, an inclined block, a first notch and a second notch, the inner wall of the sleeve is in clearance fit with the outer wall of the threaded rod, the inner wall of the top of the sleeve is fit with the lower part of the outer wall of the block body, the device is placed in a hole through the fit of the threaded rod, a flat pad, a spring pad, a nut, the lug, the block body and the expanding structure, an external straight cylinder is inserted into the outer wall of the threaded rod, the straight cylinder is hammered to drive the sleeve to move upwards, and the outer wall of the sleeve expands outwards due to the arrangement of the inclined block, the first notch, the second notch and the block body, so that the device is fixed in concrete, the fixing force is strong, and the anchor bolt is prevented from falling.

Description

Tensile post-pulling bottom expanding mechanical anchor bolt

Technical Field

The utility model relates to the technical field of anchor bolts, in particular to a tensile post-pulling bottom expanding mechanical anchor bolt.

Background

The anchor bolts refer to the general name of all rear anchoring components, have a wide range, are divided into metal anchor bolts and nonmetal anchor bolts according to different raw materials, and are divided into expansion anchor bolts, reaming anchor bolts, bonding anchor bolts, concrete screws, nail shooting, concrete nails and the like according to different anchoring mechanisms.

When the crab-bolt uses, need use drilling equipment to punch on concrete, then insert the crab-bolt in the hole, insert outside straight section of thick bamboo on the threaded rod, hammer outside straight section of thick bamboo through outside hammer, outside straight section of thick bamboo drives the sleeve and removes, because the setting of block makes the sleeve outwards expand, and then accomplishes the installation of crab-bolt, only through the outside control in a sleeve position, the holding power is relatively poor, when receiving external force to draw, leads to the crab-bolt to drop easily, influences normal use.

Disclosure of Invention

The utility model aims to solve the defects that in the prior art, only one position of a sleeve is expanded outwards, the fixing force is poor, and an anchor bolt is easy to fall off, and provides a tensile post-pulling bottom expanding mechanical anchor bolt.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a tensile under-reaping mechanical anchor bolt, includes the threaded rod, the top of threaded rod and the bottom fixed connection of block, the outside of threaded rod is equipped with the lug, the outside of threaded rod is equipped with expansion structure.

Preferably, the expansion structure comprises a sleeve, an inclined block, a first notch and a second notch, wherein the inner wall of the sleeve is in clearance fit with the outer wall of the threaded rod, the inner wall of the top of the sleeve is attached to the lower part of the outer wall of the block, a convex block is fixedly connected to the upper part of the outer wall of the sleeve, the first notch is processed above the outer wall of the sleeve, the second notch is processed below the outer wall of the sleeve, the inclined block is in clearance fit with the inner wall of one side of the sleeve, and one end of the inclined block is fixedly connected with one side of the threaded rod.

Preferably, a flat pad is in clearance fit under the outer wall of the threaded rod.

Preferably, a spring pad is in clearance fit below the outer wall of the threaded rod.

Preferably, a nut is connected below the outer wall of the threaded rod in a threaded manner.

The utility model provides a tensile post-pulling bottom expanding mechanical anchor bolt, which has the beneficial effects that: through threaded rod, flat pad, bullet pad, nut, lug, block and expansion structure's cooperation for the device can be when using through placing the device in the hole, inserts outside straight section of thick bamboo at the threaded rod outer wall, hammering straight section of thick bamboo, and straight section of thick bamboo drives sleeve and upwards moves, because oblique piece, incision one, incision two and block's setting, telescopic outer wall outwards expands when making sleeve upwards move, makes two outside expansion in sleeve positions, and then makes the device fix in the concrete, and anti drawing, the holding power is strong, avoids the crab-bolt to drop.

Drawings

FIG. 1 is a schematic view of the structure of the threaded rod, block and sleeve of the present utility model;

FIG. 2 is a schematic view of the bump, block and sleeve structure of the present utility model;

FIG. 3 is a schematic view of the structure of the threaded rod, sleeve and inclined block of the present utility model;

FIG. 4 is a schematic view of the flat pad, spring pad and nut of the present utility model.

In the figure: 1. threaded rod, 2, expansion structure, 201, sleeve, 202, sloping block, 203, incision one, 204, incision two, 3, flat pad, 4, spring pad, 5, nut, 6, bump, 7, block.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

referring to fig. 1-4: in this embodiment, a tensile back club-footed machinery crab-bolt, including threaded rod 1, the top of threaded rod 1 and the bottom fixed connection of block 7, the outside of threaded rod 1 is equipped with lug 6, the outer wall below clearance fit of threaded rod 1 has flat pad 3, the outer wall below clearance fit of threaded rod 1 has bullet pad 4, the outer wall below threaded connection of threaded rod 1 has nut 5, can reciprocate at the outer wall of threaded rod 1 when nut 5 atress rotates, the outside of threaded rod 1 is equipped with expansion structure 2, expansion structure 2 makes two outside expansion in sleeve 201 position, and then make the device fix in concrete, the holding power is strong, avoid the crab-bolt to drop.

The expansion structure 2 comprises a sleeve 201, an inclined block 202, a first notch 203 and a second notch 204, wherein the inner wall of the sleeve 201 is in clearance fit with the outer wall of the threaded rod 1, the sleeve 201 can move up and down on the outer wall of the threaded rod 1 when being stressed, the top inner wall of the sleeve 201 is attached to the lower part of the outer wall of the block 7, a convex block 6 is fixedly connected to the upper part of the outer wall of the sleeve 201, the first notch 203 is processed on the upper part of the outer wall of the sleeve 201, the second notch 204 is processed on the lower part of the outer wall of the sleeve 201, the left side and the right side of the sleeve 201 are outwards expanded due to the arrangement of the second notch 204, the inclined block 202 is arranged on the inner wall of one side of the sleeve 201 in clearance fit, one end of the inclined block 202 is fixedly connected with the upper side of the threaded rod 1, the device is placed in a hole, an external straight cylinder is inserted on the outer wall of the threaded rod 1, and is hammered to drive the sleeve 201 to move upwards, and due to the arrangement of the inclined block 202, the first notch 203, the second notch 204 and the block 7, the outer wall of the sleeve 201 is outwards expanded at the same time, the sleeve 201 is outwards, so that the two positions of the sleeve is fixed in a strong concrete, and the fixed, and the device is avoided from falling.

Working principle:

firstly, the worker rotates the nut 5, take down the nut 5 from the outer wall of threaded rod 1, then take down the bullet pad 4 and the plain cushion 3 from the outer wall of threaded rod 1, place the device in the hole of beating, insert outside straight section of thick bamboo in the outer wall below of threaded rod 1, make the one end of outer wall straight section of thick bamboo laminate with the bottom of sleeve 201 mutually, hammer outer wall straight section of thick bamboo through outside hammer, outside straight section of thick bamboo drives sleeve 201 and upwards move, because sloping block 202, incision one 203, incision two 204 and the setting of block 7, the outer wall of sleeve 201 outwards expands when making sleeve 201 upwards move, make two positions of sleeve 201 outwards expand, bump 6 prick in the concrete simultaneously, and then make the device fix in the concrete, the holding power is strong, avoid the crab-bolt to drop.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims

1. The utility model provides a tensile post-pullout bottom expanding mechanical anchor bolt, includes threaded rod (1), its characterized in that: the top of the threaded rod (1) is fixedly connected with the bottom of the block body (7), a lug (6) is arranged on the outer side of the threaded rod (1), and an expansion structure (2) is arranged on the outer side of the threaded rod (1);

the expansion structure (2) comprises a sleeve (201), an inclined block (202), an incision I (203) and an incision II (204), wherein the inner wall of the sleeve (201) is in clearance fit with the outer wall of the threaded rod (1), the top inner wall of the sleeve (201) is attached to the lower part of the outer wall of the block (7), a lug (6) is fixedly connected to the upper part of the outer wall of the sleeve (201), an incision I (203) is machined on the upper part of the outer wall of the sleeve (201), an incision II (204) is machined on the lower part of the outer wall of the sleeve (201), an inclined block (202) is in clearance fit with the inner wall of one side of the sleeve (201), and one end of the inclined block (202) is fixedly connected with the upper part of the threaded rod (1).

2. The post pullout resistant under-reamed mechanical anchor of claim 1, wherein: a flat pad (3) is in clearance fit below the outer wall of the threaded rod (1).

3. The post pullout resistant under-reamed mechanical anchor of claim 1, wherein: and an elastic pad (4) is in clearance fit below the outer wall of the threaded rod (1).

4. The post pullout resistant under-reamed mechanical anchor of claim 1, wherein: and a nut (5) is connected below the outer wall of the threaded rod (1) in a threaded manner.