CN210395339U

CN210395339U - Fin type strong anchor bolt

Info

Publication number: CN210395339U
Application number: CN201920921451.7U
Authority: CN
Inventors: 辛恒奇; 刘元明; 孙广京; 刘媛媛; ***; 侯俊敏; 李新海; 孙宪彪
Original assignee: Xinwen Mining Group Co Ltd
Current assignee: Xinwen Mining Group Co Ltd
Priority date: 2019-06-19
Filing date: 2019-06-19
Publication date: 2020-04-24
Anticipated expiration: 2029-06-19

Abstract

The utility model discloses a fin type strong anchor bolt, the anchor bolt body of which is a solid rod body, the rear end of the solid rod body is provided with a tray and a fastening nut, a group of axial grooves and a blocking sleeve are arranged at intervals on the inner section of the hole of the solid rod body, each axial groove is movably connected with a fin type piece which extends backwards and is lapped on the front port of the blocking sleeve; when the solid rod body is pulled outwards under the action of the fastening nut and the blocking sleeve is not moved, the fin-shaped sheet is propped outwards under the blocking of the blocking sleeve and is supported on the wall of the hole.

Description

Fin type strong anchor bolt

Technical Field

The utility model relates to an anchoring device can be used to fields such as crab-bolt support, crab-bolt are fixed.

Background

The anchor bolt is a mechanical anchor bolt and a bonding anchor bolt according to different structural forms and stress mechanisms. The technology related to this application is mechanical type anchors. The mechanical anchor bolt plays an anchoring role immediately after being installed, so the mechanical anchor bolt is required in some special projects.

The commonly used mechanical anchor bolt is generally in an end anchor structure, namely the tail part of the anchor bolt is anchored at the bottom of a drill hole through structures such as a wedge block, an expansion shell and the like. Because the anchoring is only limited to the bottom of the drill hole, and resistance does not exist at other parts, the anchoring force is low, and once the end anchor fails, the anchoring force is lost, and the end anchor is easy to pull out.

Anchors and some anchors are substantially similar in construction. For example utility model application number 201310289750.0 discloses a pawl formula soil layer stock and uses thereof, and it includes a steel pipe, and the outer tip of steel pipe is equipped with the external screw thread to be equipped with and only starch stopper, tray and nut, its characterized in that, every interval certain distance is equipped with the slip casting hole on the steel pipe, is equipped with the steel wire pawl on the steel pipe wall between the slip casting hole, and the front end of steel pipe is equipped with the toper and seals the cap. The utility model discloses because the interval has set up the steel wire pawl, the steel wire pawl has certain elastic tension, gets into the soil layer, can only advance moreover and can not withdraw from, has increased the resistance to plucking ability of crab-bolt widely. However, this anchor has a low resistance and can only be used in the soil.

For another example, the anchor rod device applied to civil engineering provided by utility model application No. 201810152414.4 is provided with a groove axially in the outer side wall of the anchor rod body (steel pipe), a pawl is arranged in the groove, and the pawl is rotatably arranged in the groove through a pin shaft; the pawl is provided with an external locking part and an internal driving part, the internal driving part is deeply inserted into the anchor bolt body and faces the lower end of the anchor bolt body, and the external locking part faces the upper end of the anchor bolt body; the anchor rod body is internally provided with a driving assembly, the driving assembly comprises a driving plate and a driving rod, the driving plate is attached to the inner side wall of the anchor rod body, the upper end of the driving plate is clamped with the outer side wall of the driving rod, the driving plate can axially reciprocate along the anchor rod body, the driving plate is matched with the inner driving part of the pawl, and the pawl is driven to rotate when the driving plate moves upwards so that the outer locking part of the pawl extends out of the groove; can effectively strengthen the frictional force between stock and the stratum, the structure is more firm after the grout. Because the pawl is a sharp rod structure with a limited diameter, the resistance force is only limited in the bending resistance range of the pawl, the strength and the use effect of the anchor rod are greatly reduced, and the structure is complex.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provided a powerful crab-bolt of fin formula.

The utility model adopts the technical proposal that: a finned power anchor comprising: the anchor bolt body is a solid rod body, the outer section of a hole of the solid rod body is called as the rear end, and the rear end is provided with a tray and a fastening nut; the fin-shaped piece is connected in a way that the root part of the fin is provided with an inserting lug structure matched with the axial groove, the fin-shaped piece is inserted into the groove of the solid rod body through the inserting lug and is fixed by the pin; a blocking sleeve is sleeved on the solid rod body behind each group of fin-shaped sheets, so that the tail end of each fin-shaped sheet is lapped on the front port of the blocking sleeve before use and installation; the blocking sleeve is provided with a top column, and the top column of the previous blocking sleeve is propped against the blocking sleeve at the rear end through a gap between the two fin-shaped sheets; when the solid rod body is pulled outwards under the action of the fastening nut, the fin-shaped sheet is propped outwards under the blocking of the blocking sleeve.

Furthermore, the outer periphery of the fin is provided with a sawtooth-shaped tooth tip so as to increase the resistance force with the hole wall.

Furthermore, each group of the axial grooves is 2-4 and is uniformly distributed around the solid rod body, 2 axial grooves are distributed on two sides of the solid rod body, 3 axial grooves are distributed around the solid rod body in a triangular mode, and 4 axial grooves are symmetrically distributed around the solid rod body.

The installation method of the utility model is that firstly, an anchoring hole is drilled at the place where the anchor bolt needs to be anchored or installed, the fastening nut of the fin type strong anchor bolt is reversed, so that the fin sheet of the device is in a contraction state, and the tail end of the fin sheet is ensured to be put on the front port of the blocking sleeve; the device is arranged in an anchoring hole, the rear end of the device is exposed, the nut is fastened in a forward rotation mode, the solid rod body is pulled outwards under the action of the fastening nut, the fin-shaped sheet is gradually unfolded outwards under the blocking of the blocking sleeve and supported on the wall of the hole, and the supporting is tighter as the fin-shaped sheet is pulled.

The utility model has the advantages that the impedance is realized by adopting the fin-shaped piece, the area of the fin-shaped piece is large, and the bearing capacity is large; due to the fact that the multiple groups of fin-shaped pieces are arranged, multi-point anchoring and strong impedance are achieved, and the anchoring force is larger when the external force is larger; even if the individual fin fails, the problem of overall failure does not exist; the structure is simple, and the operation is convenient; the length, the diameter and the number of the finned sheets of the device can be designed according to engineering conditions, and various engineering requirements are met.

Drawings

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

FIG. 2 is a schematic view of the anchoring condition of the present invention in use;

FIG. 3 is a schematic front view of a connection structure of a fin and a solid rod;

FIG. 4 is a schematic top view of a connection structure of a fin and a solid rod, showing two fins arranged symmetrically;

FIG. 5 is a schematic front view of another form of fin structure;

FIG. 6 is a perspective view of a blocking sleeve.

The device comprises a solid rod body 1, a fastening nut 2, a tray 3, a blocking sleeve 4, a fin 5, an axial groove 6, a pin 7, an anchoring hole 8, a tooth tip 9, an inserting lug 10 and a support pillar 11.

Detailed Description

In order to make the technical field person understand the present invention better, the embodiments of the present invention will be further described with reference to the attached drawings.

As shown in fig. 1 and 2, a fin-type power anchor includes: the anchor bolt comprises an anchor bolt body, wherein the anchor bolt body is a solid rod body 1, the outer section of a hole of the solid rod body 1 is called as the rear end, the rear end is provided with a tray 3 and a fastening nut 2, a group of axial grooves 6 are arranged on the inner section of the hole of the solid rod body 1 at certain intervals, and each axial groove 6 is movably connected with a fin-shaped sheet 5 which extends backwards; the fin-shaped piece 5 is connected in a way that the root part of the fin is provided with a structure of an inserting lug 9 matched with the axial groove, the inserting lug 9 is inserted into the groove 6 of the solid rod body, and the fixing is carried out by a pin 7 (as shown in figures 3, 4 and 5); a blocking sleeve 4 is sleeved on the solid rod body 1 behind each group of fin-shaped sheets 5, so that the tail end of each fin-shaped sheet 5 is lapped on the front port of the blocking sleeve 4 before use and installation; the blocking sleeve 4 is provided with a top column 11 (as shown in fig. 6), and the top column 11 of the previous blocking sleeve is propped against the blocking sleeve 4 at the rear end through a gap between the two fin-shaped sheets; when the solid rod body 1 is pulled out of the drill hole 8 under the action of the fastening nut 2, the fins 5 are spread outwards under the blocking of the blocking sleeve 4.

Further, the fin 5 is provided with serrated tips 10 at its outer periphery to increase resistance against the hole wall.

Furthermore, each group of the axial grooves 6 has 2-4 grooves which are uniformly distributed around the solid rod body 1, 2 grooves are distributed on two sides of the solid rod body 1 (as shown in fig. 4), 3 grooves are distributed around the solid rod body 1 in a triangular manner, and 4 grooves are symmetrically distributed around the solid rod body 1.

The installation method of the utility model is that firstly, an anchoring hole 8 is drilled at the place where the anchor bolt needs to be anchored or installed, the fastening nut 2 of the fin type strong anchor bolt is reversed, so that the fin-shaped piece 5 of the device is in a contraction state, and the tail end of the fin-shaped piece 5 is ensured to be lapped on the front port of the blocking sleeve 4; the device is arranged in an anchoring hole 8, the rear end of the device is exposed, the nut 2 is fastened in a forward rotation mode, the solid rod body 1 is pulled outwards under the action of the fastening nut 2, the fin-shaped sheets 5 are gradually unfolded outwards under the blocking of the blocking sleeve 4 and supported on the wall of the anchoring hole 8, and the supporting is tighter and tighter as the pulling is performed.

Claims

1. A fin type strong anchor bolt comprises an anchor bolt body, wherein the anchor bolt body is a solid rod body, the outer section of a hole of the solid rod body is called as the rear end, and the rear end is provided with a tray and a fastening nut; the fin-shaped piece is connected in a way that the root part of the fin is provided with an inserting lug structure matched with the axial groove, the fin-shaped piece is inserted into the groove of the solid rod body through the inserting lug and is fixed by the pin; a blocking sleeve is sleeved on the solid rod body behind each group of fin-shaped sheets, so that the tail end of each fin-shaped sheet is lapped on the front port of the blocking sleeve before use and installation; the blocking sleeve is provided with a top column, and the top column of the previous blocking sleeve is propped against the blocking sleeve at the rear end through a gap between the two fin-shaped sheets; when the solid rod body is pulled outwards under the action of the fastening nut, the fin-shaped sheet is propped outwards under the blocking of the blocking sleeve.

2. The finned power anchor of claim 1, wherein said fin has serrated tips on the outer periphery.

3. The finned power anchor as claimed in claim 1 or 2, wherein said axial grooves are 2 in each group and are distributed on both sides of the solid shank.

4. The finned power anchor as claimed in claim 1 or 2, wherein said axial grooves are 3 in each group and are distributed triangularly around the solid shank.

5. The finned power anchor as claimed in claim 1 or 2, wherein there are 4 axial grooves per group, symmetrically disposed around the solid shank.