CN212643268U

CN212643268U - Adhesive die bottom expanding anchor bolt

Info

Publication number: CN212643268U
Application number: CN202021316611.4U
Authority: CN
Inventors: 徐宝余
Original assignee: Nanjing Mankate Science And Technology Co ltd
Current assignee: Nanjing Mankate Science And Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-03-02
Anticipated expiration: 2030-07-07

Abstract

The utility model relates to an adhesive die expands end crab-bolt, it includes the screw rod, installs gear nut and the cover at the screw rod lower extreme and put on the screw rod and be located the catch of gear nut top, gear nut's upper end is the cone structure, and gear nut's hypomere is equipped with the cylinder structure of gear tooth for the lateral wall, and the catch is pipe structure and lower extreme along axial processing for a plurality of catch blades in order to realize opening through gear nut cone structure extrusion messenger catch blade and reach the anchoring effect. The utility model discloses can eliminate the stress of similar mechanical crab-bolt, guarantee the crab-bolt simultaneously at anchor atress in-process, even the adhesive is ageing can not lose anchor power yet, prevent the calamity because of ageing production.

Description

Adhesive die bottom expanding anchor bolt

Technical Field

The utility model relates to a building field or equipment fixing field, in particular to adhesive mould expand end crab-bolt.

Background

The anchor bolt is a novel metal anchoring material, can be used for mounting various rear embedded parts, and can also be used for mounting equipment, highway barriers and bridge guardrails; and building reinforcing and reforming and other places. The anchor bolts in the current market are divided into mechanical anchor bolts and chemical anchor bolts, and the mechanical anchor bolts have stress risks in the working state and cannot be eliminated; the chemical anchor bolt has no stress, but the anchoring adhesive has the damp-heat aging phenomenon, so that the anchoring strength can be attenuated, even the anchoring force fails, and the safety risk is brought.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned problem and provide an adhesive die expands end crab-bolt, it can eliminate the stress of similar mechanical crab-bolt, guarantees the crab-bolt simultaneously at the anchor atress in-process, even the adhesive is ageing can not lose the anchor power yet, prevents to produce the calamity because of ageing.

To achieve the above object, the present invention is implemented as follows: the utility model provides an adhesive die expands end crab-bolt, it includes the screw rod, installs the gear nut and the cover of screw rod lower extreme and put at the screw rod lower extreme and be located the key of gear nut top and be located the resistance circle of key top, the upper end of gear nut is the cone structure, and the hypomere of gear nut is the cylinder structure that the lateral wall was equipped with the gear tooth, and the key is pipe structure and lower extreme along axial processing for a plurality of key blades in order to realize opening through gear nut cone structure extrusion messenger key blade and reach the anchoring effect.

The further optimization scheme is that an annular groove convenient for opening the lock key blade is arranged at the intersection of the peripheral side of the outer wall of the middle part of the lock key and the upper end part of the lock key blade.

The further optimization scheme is that the resistance ring is positioned above the locking key and used for preventing the locking key from sliding out of the mounting hole in the stress process. The resistance ring is an annular resistance ring, the screw rod is divided into an upper screw rod and a lower screw rod by the annular resistance ring, and the upper screw rod and the lower screw rod are concentric cylinders with different diameters.

The further optimization scheme is that the upper section of the screw rod is provided with a limit groove which is used as an anchor bolt burial depth limit line.

In a further optimized scheme, the side wall gear teeth of the gear nut are at least three pieces.

The further optimization scheme is that the upper end of the screw rod is provided with a hexagonal head which is convenient for applying torsion to the screw rod.

The further optimization scheme is that the upper part of the screw rod is provided with a gasket and a nut which are convenient for mounting anchoring objects.

Compare prior art, the utility model has the advantages of it is following: the utility model discloses the adhesive mould expands the stress that the end crab-bolt can eliminate similar machinery crab-bolt, guarantees the crab-bolt simultaneously and at anchor atress in-process, even the adhesive is ageing can not lose anchor power yet, prevents to produce the calamity because of ageing.

(1) The utility model discloses a resistance that produces between gear nut's the outer gear tooth and the pore wall converts the torsion of hexagonal screw rod.

(2) The utility model discloses an it promotes gear nut and opens the blade of catch and reach the anchor effect to apply torsion to hexagonal head of hexagonal screw rod.

(3) The utility model discloses utilize gear nut's gear recess to pour into the bar planting glue in the mounting hole bottom earlier and arrange around the screw rod of the key other end.

(4) The utility model discloses utilize the bellied annular resistance circle of screw rod to receive the counter-force of gear nut extrusion power as the catch in opening the in-process.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the bottom-expanding anchor bolt of the adhesive mold of the present invention.

Fig. 2 is an exploded view of the bottom-expanding anchor bolt of the adhesive mold of the present invention.

Fig. 3 is a schematic view of the working state of the bottom-expanding anchor bolt of the adhesive mold of the present invention.

Fig. 4 is a schematic view of the gear nut of the bottom-expanding anchor bolt of the adhesive mold according to the present invention.

The symbols in the drawings illustrate that: 1. the device comprises a screw rod, 2, a gear nut, 3, a locking key, 3-1, an annular groove, 4, a resistance ring, 5, a limiting groove, 6, a hexagonal head, 7, a gasket, 8 and a nut.

Detailed Description

The specific embodiment is as follows:

referring to fig. 1-4, an adhesive mold bottom-expanding anchor bolt comprises a screw rod 1, a gear nut 2 installed at the lower end of the screw rod 1, a locking key 3 sleeved at the lower end of the screw rod 1 and located above the gear nut 2, and a resistance ring 4 sleeved at the lower end of the screw rod 1 and located above the locking key 3, wherein a hexagonal head 6 facilitating torsion application to the screw rod 1 is arranged at the upper end of the screw rod 1; the upper part of the screw rod 1 is provided with a gasket 7 and a nut 8 which are convenient for installing anchoring objects; and the upper section of the screw rod 1 is provided with a limiting groove 5 serving as an anchor bolt burial depth limiting line. The upper end of the gear nut 2 is of a cone structure, the lower section of the gear nut 2 is of a cylinder structure, the outer side wall of the cylinder structure is provided with concave-convex ordered or disordered gear teeth, and the side wall gear teeth of the gear nut 2 are of three or more uniform or non-uniform structures; the middle of the gear nut 2 is provided with a mounting hole, the size of the mounting hole is matched with the thread at the lower screw rod end of the hexagonal screw rod 1 after tapping, and the gear teeth on the outer side are tangent to the wall of the base material hole to generate resistance, so that the hexagonal screw rod 1 generates torsion. The locking key 3 is of a circular tube structure, the lower end of the locking key is axially processed into a plurality of locking key blades, and an annular groove 3-1 convenient for the locking key blades to open is formed at the intersection of the peripheral side of the outer wall of the middle part of the locking key 3 and the upper end parts of the locking key blades so as to realize that the locking key blades are opened to achieve the anchoring effect through the extrusion of the cone structure of the gear nut 2; an annular resistance ring 4 which is sleeved at the lower end of the screw rod 1 and used for preventing the locking key 3 from sliding outwards the mounting hole in the stress process is arranged above the locking key 3. The annular resistance circle is cut apart into screw rod 1 and is gone up screw rod and lower screw rod, the utility model discloses go up the screw rod and adopt the concentric cylinder of inequality diameter with lower screw rod.

The utility model discloses adhesive mould expands end crab-bolt theory of operation: as shown in fig. 3, the utility model discloses at first to installation substrate drilling, clear hole, secondary reaming, the clear hole of secondary, injecting glue, then installation gluing mould expand end crab-bolt, apply the moment of torsion and strut and unblank, wait for the solidification. The utility model discloses hexagonal screw rod one end is a circular screw rod, and the other end is equipped with a hexagonal head, and the hexagonal head is used for applying torsion for gear nut and opens the latch, is close to the position that circular screw rod thickness is bordered, sets up a bellied annular resistance circle, and this annular resistance circle is used for preventing the latch to slide outside the hole at the atress in-process. Turning one end close to the hexagonal head to form an annular groove serving as a limit line for anchor bolt burial depth; the locking key is a circular tube with the inner diameter right penetrating through the lower screw rod end of the hexagonal screw rod, one end of the circular tube is divided into four or more locking key blades along the annular direction, and the root of each blade is intersected with an annular groove turned in the middle of the outer side of the circular tube, so that the locking key blades can be easily opened outwards under the extrusion of the conical head of the gear nut, and the anchoring force is achieved; gear nut one end is the cone, and the other end outside is unsmooth orderly or unordered gear form gear tooth, and the centre is equipped with the mounting hole, and the screw thread phase-match of screw rod end under with the hexagonal screw rod after tapping, the gear tooth and the pore wall in the outside are tangent to produce the resistance, let the hexagonal screw rod produce torsion.

The utility model utilizes the resistance generated between the external gear teeth of the gear nut and the hole wall to convert the resistance into the torque force of the hexagonal screw; the utility model discloses the torsion that hexagonal screw hexagonal head exerted promotes the gear nut and opens the blade of lock key; the utility model utilizes the gear groove of the gear nut to arrange the bar planting glue which is firstly injected into the hole bottom to the periphery of the screw rod at the other end of the anchor bolt locking key; the utility model discloses utilize the cover to receive the counter-force of gear nut extrusion power as the catch opening the in-process at bellied annular resistance circle on the screw rod.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an adhesive die expands end crab-bolt which characterized in that: it includes screw rod (1), installs gear nut (2) and the cover at screw rod (1) lower extreme and is put at screw rod (1) lower extreme and be located lock key (3) of gear nut (2) top, the upper end of gear nut (2) is the cone structure, and the hypomere of gear nut (2) is the cylinder structure that the lateral wall was equipped with the gear tooth, and lock key (3) are pipe structure and lower extreme along axial processing for a plurality of lock key blades in order to realize making the lock key blade open through gear nut (2) cone structure extrusion and reach the anchoring effect.

2. The swage anchor of claim 1, wherein: and an annular groove (3-1) convenient for opening the lock key blade is arranged at the intersection of the peripheral side of the outer wall of the middle part of the lock key (3) and the upper end part of the lock key blade.

3. The swage anchor according to claim 1 or 2, wherein: and a resistance ring (4) which is sleeved on the screw rod (1) and used for preventing the locking key (3) from sliding upwards in the stress process is arranged above the locking key (3).

4. The swage anchor of claim 3, wherein: the resistance ring (4) is an annular resistance ring, the screw rod (1) is divided into an upper screw rod and a lower screw rod by the annular resistance ring, and the upper screw rod and the lower screw rod are concentric cylinders with different diameters.

5. The swage anchor of claim 1, wherein: the upper section of the screw rod (1) is provided with a limit groove (5) used as an anchor bolt burial depth limit line.

6. The swage anchor of claim 1, wherein: the side wall gear teeth of the gear nut (2) are at least three pieces.

7. The swage anchor of claim 1, wherein: the upper end of the screw rod (1) is provided with a hexagonal head (6) which is convenient for applying torsion to the screw rod (1).

8. The swage anchor of claim 1, wherein: the upper part of the screw rod (1) is provided with a gasket (7) and a nut (8) which are convenient for installing anchoring objects.