CN210529690U

CN210529690U - Self-locking concrete anchor head

Info

Publication number: CN210529690U
Application number: CN201920597334.XU
Authority: CN
Inventors: 周剑波; 高作平; 廖杰洪; 周志勇; 李志强; 张畅
Original assignee: Wuda Jucheng Structure Co ltd
Current assignee: Wuda Jucheng Structure Co ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-05-15
Anticipated expiration: 2029-04-28

Abstract

The utility model provides a concrete auto-lock anchor head, includes stock (1) and support pedestal (2), support pedestal (2) in be provided with well cavity (5), during well cavity (5) of support pedestal (2) were inserted to stock (1) lower part, stock (1) bottom was provided with steel bar nut (4), well cavity (5) upper portion aperture be greater than stock (1) external diameter and be less than steel bar nut (4) external diameter, well cavity (5) lower part aperture is greater than steel bar nut (4) external diameter, has cup jointed self-lock device (3) on stock (1), self-lock device (3) and stock (1) sliding fit, stock (1) are gone up and are located self-lock device (3) top and are provided with steel bar nut (4). The installation is convenient and reliable, and the device can be opened more conveniently and completely; meanwhile, even when the strength of the bearing body such as rock or concrete is low, the self-locking anchor head can also fully exert the efficiency.

Description

Self-locking concrete anchor head

Technical Field

The utility model relates to an anchor head, more specifically the concrete auto-lock anchor head that says so relates to belongs to anchor technical field.

Background

In the field of civil structure engineering, embedded parts are frequently required to be supplemented on the existing concrete structure, and currently, the rear-mounted anchoring mode mainly comprises an expansion type anchor bolt, a chemical bar planting and a hole expanding type anchor bolt.

The Chinese utility model patent "a concrete auto-lock inserted bar and supporting reaming bit" (patent publication No. CN2404619Y, publication No. 11/8/2000) proposes a reaming bit consisting of a drill rod, a chisel head and a base, wherein the drill rod is a long steel bar, the chisel head is a two-petal chisel head, the upper end of the chisel head is hinged with the drill rod, and the base is a tapered short steel bar, and is connected with the drill rod by a slide bar. The drill bit and the base are placed at the bottom of the hole, when the drill rod rotates and moves downwards, the two petal chisel heads extend to the hole wall along the inclined plane on the base, and a conical wedge surface is cut on the hole wall so as to be convenient for installing the self-locking anchor rod. The utility model has the advantages of simple structure, good self-locking property and larger anchoring force, and can be widely applied to rock or concrete anchoring engineering; however, since the main anchoring force of the drill bit and the anchor rod is provided by the rock or concrete supporting body at the single-layer anchor head, when the strength of the supporting body such as rock or concrete is low, the stress concentration at the part is difficult to make the anchor rod fully exert the effect.

Disclosure of Invention

An object of the utility model is to provide a concrete auto-lock anchor head to the stress concentration that current auto-lock inserted bar exists is difficult to make stock full play efficiency scheduling problem.

The utility model discloses a realize above-mentioned purpose, the technical solution who adopts is: the utility model provides a concrete auto-lock anchor head, includes stock and support pedestal, the support pedestal in be provided with the cavity hole, during the cavity hole of support pedestal is inserted to the stock lower part, stock bottom is provided with the steel bar nut, cavity hole upper portion aperture be greater than the stock external diameter and be less than the steel bar nut external diameter, cavity hole lower part aperture is greater than the steel bar nut external diameter, has cup jointed self-lock device on the stock, self-lock device and stock sliding fit, it is provided with the steel bar nut to lie in the self-lock device top on the stock.

The anchor rod is a finish rolling twisted steel.

The supporting pedestal is a pedestal with a round table at the upper part and a cylindrical lower part, and the self-locking device is positioned above the supporting pedestal.

The self-locking device is formed by connecting a plurality of self-locking heads in series through connecting steel wires.

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

compared with the prior art, the self-locking anchor head is convenient and reliable to install, and can be opened more conveniently and completely; meanwhile, even when the strength of the bearing body such as rock or concrete is low, the self-locking anchor head can also fully exert the efficiency.

Drawings

Fig. 1 is a schematic structural view before the utility model is opened and self-locked.

Fig. 2 is a perspective view of the utility model before opening and self-locking.

Fig. 3 is a schematic view of the structure after the utility model is opened and self-locked.

Fig. 4 is a perspective view of the utility model after opening and self-locking.

In the figure, anchor rod 1, support pedestal 2, self-lock device 3, steel bar nut 4, cavity hole 5, connecting wire 6.

Detailed Description

The invention is described in further detail below with reference to the following description of the drawings and the detailed description.

Referring to fig. 1 to 4, a concrete self-locking anchor head comprises an anchor rod 1 and a support pedestal 2, wherein the anchor rod 1 is a metal round bar body. A hollow hole 5 is formed in the support pedestal 2, the lower part of the anchor rod 1 is inserted into the hollow hole 5 of the support pedestal 2, a reinforcing steel bar nut 4 is arranged at the bottom of the anchor rod 1, external threads are formed at the bottom of the anchor rod 1, and the reinforcing steel bar nut 4 is screwed at the bottom of the anchor rod 1; the aperture of the upper part of the hollow hole 5 is larger than the outer diameter of the anchor rod 1 and smaller than the outer diameter of the steel bar nut 4, and the aperture of the lower part of the hollow hole 5 is larger than the outer diameter of the steel bar nut 4. The anchor rod 1 is sleeved with a self-locking device 3, and the self-locking device 3 is in sliding fit with the anchor rod 1; the anchor rod 1 is provided with a steel bar nut 4 at the top of the self-locking device 3, the anchor rod 1 is provided with an external thread, and the steel bar nut 4 is screwed on the anchor rod 1.

Referring to fig. 1 to 4, in particular, the anchor rod 1 is a finish-rolled twisted steel.

Referring to fig. 1 to 4, specifically, the support pedestal 2 is a pedestal having a circular truncated cone at an upper portion and a cylindrical column at a lower portion, and the self-locking device 3 is located above the support pedestal 2.

Referring to fig. 1 to 4, specifically, the self-locking device 3 is formed by connecting a plurality of self-locking heads in series through connecting steel wires 6. The number of the plurality of self-locking heads is more than 8, and is usually 8.

Referring to fig. 1 to 4, the self-locking anchor head is used for anti-floating of a basement or anchoring of a rock foundation and can be used for anchoring in a common straight hole anchor hole. When the self-locking anchor rod is used, the anchor rod 1 falls to the bottom of the hole along the hollow hole 5, and the self-locking head of the self-locking device 3 is propped open on the upper circular table top of the supporting table base 2 by pressure and is attached to the circular table top. Therefore, the self-locking anchor head can correspondingly improve the anti-pulling force of the anchor rod or the embedded part and improve the anchoring reliability of the anchor rod.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, above-mentioned structure should all be regarded as belonging to the utility model discloses a protection scope.

Claims

1. A concrete auto-lock anchor head which characterized in that: including stock (1) and support pedestal (2), support pedestal (2) in be provided with cavity hole (5), in inserting cavity hole (5) of support pedestal (2) stock (1) lower part, stock (1) bottom is provided with reinforcing bar nut (4), cavity hole (5) upper portion aperture be greater than stock (1) external diameter and be less than reinforcing bar nut (4) external diameter, cavity hole (5) lower part aperture is greater than reinforcing bar nut (4) external diameter, has cup jointed self-lock device (3) on stock (1), self-lock device (3) and stock (1) sliding fit, lie in on stock (1) and be provided with reinforcing bar nut (4) from lock device (3) top.

2. A concrete self-locking anchor head according to claim 1, wherein: the anchor rod (1) is a finish-rolled twisted steel.

3. A concrete self-locking anchor head according to claim 1, wherein: the support pedestal (2) is a pedestal with a round table at the upper part and a cylindrical lower part, and the self-locking device (3) is positioned above the support pedestal (2).

4. A concrete self-locking anchor head according to claim 1, wherein: the self-locking device (3) is formed by connecting a plurality of self-locking heads in series through connecting steel wires (6).