CN216278854U

CN216278854U - Mechanical anchor bolt with self-bottom-expanding type

Info

Publication number: CN216278854U
Application number: CN202122984379.2U
Authority: CN
Inventors: 李春晓; 李春良
Original assignee: Shandong Lanqiao Engineering Materials Co ltd
Current assignee: Shandong Lanqiao Engineering Materials Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-12
Anticipated expiration: 2031-11-30

Abstract

The utility model belongs to the technical field of anchor bolts, and discloses a self-bottom-expanding mechanical anchor bolt which comprises an expanding sleeve, wherein one end of the expanding sleeve is provided with an expanding sheet, an anchor rod penetrates through the expanding sheet, the anchor rod comprises a screw rod part and a polished rod part, one end of the polished rod part, which is close to the expanding sheet, is provided with an expanding head, one end of the screw rod part, which is far away from the expanding head, is connected with a nut, two sides of the polished rod part are respectively provided with a cavity groove, a spring is fixed in the cavity groove, one end of the spring is connected with a movable block, and one end of the movable block, which is far away from the spring, is fixedly provided with a limiting block. The stability of the structure is ensured, and the anchoring effect is greatly improved.

Description

Mechanical anchor bolt with self-bottom-expanding type

Technical Field

The utility model belongs to the technical field of anchor bolts, and particularly relates to a self-bottom-expanding mechanical anchor bolt.

Background

The anchor bolt is a metal fastening material, can be divided into a chemical anchor bolt and a mechanical anchor bolt, is widely used for mounting a post-embedded part in dry-hanging construction of various curtain walls and marbles, and can also be used for occasions such as equipment mounting, highway and bridge guardrail mounting, building reinforcing and reconstruction and the like, and the reaming type anchor bolt is a mechanical anchor bolt which forms an anchoring effect through a locking key between a reaming hole at the bottom of an anchor hole and an anchor bolt expansion part.

But still there is more defect in the mechanical crab-bolt of self-expanding bottom type on the existing market when using, for example, the joint strength at stock position and sleeve pipe position is relatively poor to lead to structural stability poor, influence the anchor effect, simultaneously after the crab-bolt embedding base member, in case the inside concrete stone block of vibrations base member can constantly extrude the impact crab-bolt, thereby cause the device to warp the damage easily, influence life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a self-bottom-expanding mechanical anchor bolt, which aims to solve the problems that the connection strength of an anchor bolt and a sleeve is poor and the device is easy to deform and damage in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a machinery crab-bolt with from expanding end type, includes expansion sleeve, expansion sleeve's one end is installed and is expanded the piece, and it has the stock to expand to run through between sleeve and the piece that expands, the stock includes screw rod portion and polished rod portion, polished rod portion is close to the one end of expanding the piece and installs the expansion head, the one end that expansion head was kept away from to screw rod portion is connected with the nut, the chamber groove has all been seted up to the both sides of polished rod portion, the inside in chamber groove is fixed with the spring, the one end of spring is connected with the movable block, the one end that the spring was kept away from to the movable block is fixed with the spacing piece, and the one end that the movable block was kept away from to the stopper extends to the outside in chamber groove, expansion sleeve's inner wall seted up with stopper assorted spacing groove.

Preferably, a protection cylinder is installed on the outer wall of the expansion sleeve, a buffer layer is connected between the protection cylinder and the expansion sleeve, and a supporting block is embedded in the buffer layer.

Preferably, one end of the screw rod part close to the nut is provided with a flat gasket, and the flat gasket is positioned outside the expansion sleeve.

Preferably, the outer wall of the screw rod part is connected with an elastic cushion, and the elastic cushion is positioned between the flat cushion and the nut.

Preferably, the limiting block is of a convex semi-cylindrical structure, and the limiting groove is of a concave semi-circular structure.

Preferably, the side edge of the inner wall of each limit groove is provided with an arc chamfer, and the interval between every two adjacent limit grooves is equal.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the anchor rod and the expansion sleeve are matched with each other through the limiting blocks, the movable blocks, the cavity grooves, the springs and the like, so that the limiting blocks can be tightly clamped in the limiting grooves when the anchor rod and the expansion sleeve stop moving, the connection strength between the anchor rod and the expansion sleeve is greatly enhanced, the structural stability is ensured, and the anchoring effect is greatly improved.

(2) According to the utility model, the protective cylinder is additionally arranged, and the support framework is formed by the support blocks, so that the structural strength of the expansion sleeve can be greatly improved, and meanwhile, under the cooperation of the buffer layer, the compression resistance of the structure can be further enhanced, thereby preventing the device from deformation and damage caused by extrusion impact, and greatly prolonging the service life of the device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

in the figure: 1. flattening the cushion; 2. a nut; 3. a spring pad; 4. an anchor rod; 41. a screw section; 42. a light bar section; 5. a limiting groove; 6. an expansion head; 7. expanding and opening the sheet; 8. a protective cylinder; 9. a support block; 10. a buffer layer; 11. expanding the sleeve; 12. a movable block; 13. a spring; 14. a cavity groove; 15. and a limiting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a machinery crab-bolt with from expanding bottom type, including expansion sleeve 11, expansion sleeve 11's one end is installed and is expanded piece 7, and expansion sleeve 11 and expand and open and run through between piece 7 and have stock 4, stock 4 includes screw rod portion 41 and polished rod portion 42, polished rod portion 42 is close to the one end of expanding piece 7 and installs expansion head 6, the one end that expansion head 6 was kept away from to screw rod portion 41 is connected with nut 2, chamber groove 14 has all been seted up to polished rod portion 42's both sides, the inside of chamber groove 14 is fixed with spring 13, the one end of spring 13 is connected with movable block 12, the one end that spring 13 was kept away from to movable block 12 is fixed with stopper 15, and stopper 15 keeps away from the one end of movable block 12 and extends to the outside of chamber groove 14, expansion sleeve 11's inner wall has been seted up with stopper 15 assorted spacing groove 5.

Specifically, when the anchor rod 4 and the expansion sleeve 11 move relatively, the limiting block 15 can be extruded by the inner wall of the expansion sleeve 11 to drive the movable block 12 to move in the cavity groove 14, then the movable block 12 extrudes the spring 13, so that the limiting block 15 enters the cavity groove 14, and when the limiting block 15 aligns with the limiting groove 5 again and stops moving, the limiting block 15 can be ejected out and inserted into the corresponding limiting groove 5 under the elastic action of the spring 13, so that the connection strength between the anchor rod 4 and the expansion sleeve 11 is greatly enhanced, the stability of the structure is ensured, and the anchoring effect is greatly improved;

in addition, when the device is used, the nut 2 is screwed, the anchor rod 4 moves while the nut 2 is screwed, the expansion sleeve 11 can be pushed by the external force of the anchor rod 4, and the expansion head 6 and the expansion sheet 7 are matched, so that the expansion sleeve 11 can easily cut into the base body to automatically expand the hole, and the anchoring force is generated.

Further, a protection cylinder 8 is installed on the outer wall of the expansion sleeve 11, a buffer layer 10 is connected between the protection cylinder 8 and the expansion sleeve 11, and a supporting block 9 is embedded in the buffer layer 10.

Specifically, through add a protection section of thick bamboo 8 in expansion sleeve 11's outside, and set up supporting shoe 9 between a protection section of thick bamboo 8 and the expansion sleeve 11 and form supporting framework, thereby can improve expansion sleeve 11's structural strength greatly, and buffer layer 10 adopts rubber and nylon filler to make, and it has excellent elastic recovery rate, thereby the compressive property of reinforcing structure that can step forward, and then prevented that the device from receiving the extrusion impact and taking place the deformation damage, improved the life of device greatly.

Further, one end of the screw portion 41 near the nut 2 is mounted with the flat gasket 1, and the flat gasket 1 is located outside the expansion sleeve 11.

Specifically, the flat pad 1 has the function of limiting and spacing, and the nut 2 can be connected with the expansion sleeve 11 through the flat pad 1.

Further, the outer wall of the screw portion 41 is connected with an elastic pad 3, and the elastic pad 3 is located between the flat pad 1 and the nut 2.

In particular, the adjustability between the nut 2 and the flat pad 1 is increased by the elastic pad 3.

Furthermore, the limiting block 15 is in a convex semi-cylindrical structure, and the limiting groove 5 is in a concave semi-circular structure.

Particularly, the connection tightness can be greatly enhanced through the mutual clamping of the limiting block 15 and the limiting groove 5.

Further, the inner wall side of the limiting groove 5 is provided with an arc chamfer, and the interval between two adjacent limiting grooves 5 is equal.

Particularly, the limiting groove 5 is extruded out of the limiting block 15 conveniently through the arrangement of the arc chamfer.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mechanical anchor bolt with a self-bottom-expanding type is characterized in that: including expansion sleeve pipe (11), the one end of expansion sleeve pipe (11) is installed and is expanded and open piece (7), and expansion sleeve pipe (11) and expand and open and run through between piece (7) and have stock (4), stock (4) include screw rod portion (41) and polished rod portion (42), polished rod portion (42) are close to the one end of expanding and open piece (7) and install expansion head (6), the one end that expansion head (6) were kept away from in screw rod portion (41) is connected with nut (2), chamber groove (14) have all been seted up to the both sides of polished rod portion (42), the inside of chamber groove (14) is fixed with spring (13), the one end of spring (13) is connected with movable block (12), the one end that spring (13) were kept away from in movable block (12) is fixed with spacing block (15), and stopper (15) keep away from the one end of movable block (12) and extend to the outside of chamber groove (14), expansion sleeve pipe (11)'s inner wall has seted up spacing groove (5) with stopper (15) assorted.

2. A mechanical anchor of the self-reaming type according to claim 1, characterized in that: a protection cylinder (8) is installed on the outer wall of the expansion sleeve (11), a buffer layer (10) is connected between the protection cylinder (8) and the expansion sleeve (11), and a supporting block (9) is embedded in the buffer layer (10).

3. A mechanical anchor of the self-reaming type according to claim 2, characterized in that: one end of the screw rod part (41) close to the nut (2) is provided with a flat gasket (1), and the flat gasket (1) is positioned outside the expansion sleeve (11).

4. A mechanical anchor of the self-reaming type according to claim 3, characterized in that: the outer wall of the screw rod part (41) is connected with an elastic pad (3), and the elastic pad (3) is located between the flat pad (1) and the nut (2).

5. Mechanical anchor according to claim 4, of the self-reaming type, characterized in that: the limiting block (15) is of a convex semi-cylindrical structure, and the limiting groove (5) is of a concave semi-circular structure.

6. Mechanical anchor with self-reaming base, according to claim 5, in which: the inner wall side of the limiting groove (5) is provided with an arc chamfer, and the intervals of the two adjacent limiting grooves (5) are equal.