CN213773873U

CN213773873U - Heat preservation anchor suitable for steel construction heat bridge

Info

Publication number: CN213773873U
Application number: CN202022394363.1U
Authority: CN
Inventors: 苗纪奎; 胡蓝皓; 庄赠楷
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-07-23
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a heat preservation anchoring device suitable for a steel structure heat bridge, which comprises a self-tapping screw, a connecting cylinder and a sleeve which are coaxially arranged from inside to outside in sequence; wherein one end protrusion in the connecting cylinder outside of tapping screw, tapping screw's the other end is provided with first joint portion, the connecting cylinder is adjustable with telescopic hookup location, the one end that the connecting cylinder was kept away from to the sleeve is provided with second joint portion. The device has the advantages of adjustable length, small heat conductivity coefficient, firm connection with the heat-insulating layer and good heat-insulating property.

Description

Heat preservation anchor suitable for steel construction heat bridge

Technical Field

The utility model belongs to the technical field of building energy conservation, especially, relate to a heat preservation anchor suitable for steel construction heat bridge.

Background

When the external wall panel of the steel structure building adopts an embedded connection structure, heat insulation treatment should be carried out on heat bridge parts such as steel beams and steel columns, usually, after steel keels are welded on the beams or columns and fireproof plates are fixed, heat insulation layers are pasted on the outer sides of the beams or columns, and anchor bolts are used for attaching mechanical anchoring. The anchor of traditional heat preservation and wall body basic unit adopts the plastics crab-bolt usually, nevertheless because the thickness of fire prevention plate and the wall thickness of steel joist are less, can't produce effectual frictional force or mechanical locking effect to the plastics crab-bolt, therefore there is the potential safety hazard in steel construction beam column outside with plastics crab-bolt anchor heat preservation. The heat preservation that has risen in recent years penetrates the nail can be used to the heat preservation in the anchoring steel structure beam column outside, and has advantages such as the construction is swift, practices thrift the manpower, but this technique still has following problem:

1. when the heat-insulating layer is anchored to a steel structure by means of fireproof plates such as a fiber reinforced cement plate, a fiber reinforced calcium silicate plate and the like, huge sound and strong vibration are generated at the moment of driving the heat-insulating shooting nail, so that the noise is high, the plate is extremely easy to damage, and the pulling-resistant bearing capacity of the shooting nail and the bonding strength of the heat-insulating layer and the fireproof plate are influenced;

2. the shooting nail needs to penetrate through the heat-insulating layer and the fireproof plate and then be anchored on the steel keel, and when the steel keel is thick, the shooting nail is difficult to anchor; the nail rod of the shooting nail is not threaded, the shooting nail, the fireproof plate and the steel keel only transmit force through friction, and the pulling resistance bearing capacity of the shooting nail is relatively small;

3. during the construction, because the impact force of penetrating the nail is difficult to control, penetrate behind the inboard PLASTIC LAMINATED and the steel joist of heat preservation of nail anchor, its nail cap end often is absorbed in inside the heat preservation, and the heat preservation is mostly soft loose material of matter, penetrates the nail and can not play effectual restraint and fastening to the heat preservation.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model discloses a heat preservation anchor suitable for steel construction heat bridge, the device adjustable length, coefficient of heat conductivity are little, can firmly connect the heat preservation and have good thermal insulation performance.

A heat-insulating anchoring device suitable for a steel structure heat bridge comprises a self-tapping screw, a connecting cylinder and a sleeve which are coaxially arranged from inside to outside in sequence; wherein one end protrusion in the connecting cylinder outside of tapping screw, tapping screw's the other end is provided with first joint portion, the connecting cylinder is adjustable with telescopic hookup location, the one end that the connecting cylinder was kept away from to the sleeve is provided with second joint portion.

Preferably, a step hole is formed in the connecting cylinder, and the first clamping portion is clamped with a step of the step hole.

Preferably, the connecting cylinder is in threaded connection with the sleeve.

Preferably, the second clamping portion is a circular disc.

Preferably, a plurality of stiffening ribs are arranged at the joint of the sleeve and the disc.

The utility model has the advantages that:

1. compared with the fastening mode of instant firing and injection, the utility model adopts the fastening mode of the self-tapping screw to construct without noise, can not damage the fireproof plate at the inner side of the heat preservation layer, can penetrate the steel plate with larger thickness, has wide application range and large anti-pulling bearing capacity;

2. the sleeve is in threaded connection with the connecting cylinder, and the length of the heat-insulating self-tapping screw can be adjusted according to the thickness of the heat-insulating layer, so that the anchor disc is tightly pressed on the outer side of the heat-insulating layer, and the anchoring effect of the anchor disc is conveniently and fully exerted;

3. the heat-insulating self-tapping screw is designed without a heat bridge, the metal self-tapping screw is sleeved in the connecting cylinder and does not have direct contact with a heat-insulating layer, and the connecting cylinder and the sleeve with the disc are made of non-metal materials with small heat conductivity coefficients, so that the through heat bridge cannot be generated at the anchoring position.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

in the figure: 1. a self-tapping screw; 11. a nail head; 12. a nail rod; 13. nailing tail; 2. a connecting cylinder; 21. an external thread; 22. closing the tail part; 3. a sleeve; 31. a barrel body; 32. an anchor disc; 33. and an inner hexagonal groove.

Detailed Description

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

As shown in fig. 1 to 4, the utility model discloses a heat preservation anchoring device suitable for a steel structure heat bridge, which comprises a tapping screw 1, a connecting cylinder 2 and a sleeve 3; wherein, self-tapping screw 1 sets up in connecting cylinder 2 and stretches out by connecting cylinder 2 afterbody, sleeve 3 and connecting cylinder 2 threaded connection.

Further, the tapping screw 1 comprises a nail head 11, a nail rod 12 connected with the nail head, and a nail tail 13 connected with the nail rod, wherein the nail head 11 is a first clamping portion of the tapping screw, and the tapping screw 1 is clamped with the connecting cylinder 2 through the first clamping portion. The nail head 1 is designed as a pan head and is provided with a cross groove or a straight groove; the shank 12 has an external thread for tapping; the nail tail 13 adopts a drill bit type nail tail and is used for drilling a thread bottom hole; when the self-tapping screw 1 is connected with the steel keel, two procedures of drilling and tapping are combined, and the self-tapping screw 1 penetrates through the fireproof plate and is screwed into the steel keel by means of a screwdriver.

Further, the connecting cylinder 2 is made of plastic or fiber reinforced materials, external threads 21 for screw connection are arranged on the outer wall of the connecting cylinder, an axial through hole is formed in the connecting cylinder, a closing-in 22 is arranged at the tail of the connecting cylinder, namely the axial through hole and the closing-in form a step hole, and the nail head 11 is clamped with the step hole, so that the nail head 11 of the self-tapping screw is restrained.

Furthermore, a circular disc is arranged at the end part of the sleeve 3, namely the sleeve comprises a cylinder body 31 and an anchor disc 32 which are both made of plastic or fiber reinforced materials, and the cylinder body 31 is provided with an axial internal thread through hole which can be matched and screwed with the external thread 21 of the connecting cylinder; anchor disc 32 center is equipped with hexagonal groove 33 in for take the fastening of the sleeve 3 and the connecting cylinder 2 of disc, and anchor disc 32 is equipped with the stiffening rib with the perpendicular junction of stack shell 31, and this stiffening rib is many, evenly arranges along telescopic circumference, can strengthen both connections and strengthen the fastening force to the heat preservation outside.

The construction method of the anchoring device comprises the following steps:

1. drilling holes at the preset anchoring positions of the heat-insulating layers on the outer sides of the steel structure beam columns, wherein the aperture is slightly larger than the outer diameter of the connecting cylinder 2, so that the drilled holes penetrate through the heat-insulating layers and reach the outer surfaces of the fireproof plates;

2. placing the connecting cylinder 2 in the pre-drilled hole, enabling the self-tapping screw 1 to penetrate through the tail portion closing-in 22 of the connecting cylinder, screwing the self-tapping screw 1 into the fireproof plate on the inner side of the heat-insulating layer by means of an electric screwdriver, enabling the self-tapping screw to penetrate through the fireproof plate and be fastened on the steel keel, and indirectly achieving fixing of the connecting cylinder 2 and the steel keel;

3. the sleeve 3 with the disc is sleeved on the connecting cylinder 2, the inner hexagonal groove 33 in the center of the anchor disc 32 is utilized, the cylinder body 31 and the connecting cylinder 2 are kept coaxially screwed by means of an inner hexagonal screwdriver, the screwing length between the cylinder body and the connecting cylinder 2 is adjusted according to the thickness of the heat-insulating layer, the sleeve 3 with the disc is fixed on the connecting cylinder 2, and the anchor disc 32 is enabled to compress the outer side of the heat-insulating layer to play a role in fastening.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat-insulating anchoring device suitable for a steel structure heat bridge is characterized by comprising a self-tapping screw, a connecting cylinder and a sleeve which are coaxially arranged from inside to outside in sequence; wherein one end protrusion in the connecting cylinder outside of tapping screw, tapping screw's the other end is provided with first joint portion, the connecting cylinder is adjustable with telescopic hookup location, the one end that the connecting cylinder was kept away from to the sleeve is provided with second joint portion.

2. The heat-insulation anchoring device suitable for the steel structure heat bridge as claimed in claim 1, wherein a step hole is formed in the connecting cylinder, and the first clamping portion is clamped with a step of the step hole.

3. A heat insulating anchoring device suitable for steel structure heat bridge according to claim 1 or 2, characterized in that the connecting cylinder and the sleeve are connected by screw thread.

4. The heat-insulating anchoring device suitable for the steel structure heat bridge as claimed in claim 3, wherein the second clamping portion is a circular disc.

5. A heat insulation anchoring device suitable for steel structure heat bridge according to claim 4, characterized in that the junction of sleeve and disc is provided with a plurality of stiffening ribs.