CN111577358A

CN111577358A - Expansion anchor rod

Info

Publication number: CN111577358A
Application number: CN202010226854.7A
Authority: CN
Inventors: 汪世平
Original assignee: TONGLING HONGRUN ELECTROMECHANICAL CO Ltd
Current assignee: TONGLING HONGRUN ELECTROMECHANICAL CO Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-08-25

Abstract

The invention provides an expansion anchor rod, which comprises a shell; the anchor blocks are uniformly arranged on two sides of the shell; the extrusion blocks are fixedly arranged on the anchor blocks respectively and are positioned in the shell; the tail block is fixedly arranged at the top end of the shell; the screw is installed on the tail block in a threaded mode, and the bottom end of the screw extends into the shell; the rotating block is positioned above the tail block and is fixedly connected with the top end of the screw rod; the circular table blocks are fixedly sleeved on the outer side of the screw rod and are located in the shell. The expansion anchor rod provided by the invention has the advantages of convenience in use, good stability and capability of preventing the falling anchor rod from falling from the hole.

Description

Expansion anchor rod

Technical Field

The invention relates to the technical field of anchor rods, in particular to an expansion anchor rod.

Background

The anchor rod is an anchoring system which transmits the pulling force to a stable rock stratum or a soil body, and is used for reinforcing a broken rock body, a loose rock body or a sliding rock body in geotechnical engineering, so that the bearing capacity of the rock body is improved, and the stability of the rock body is improved. Various anchor rods used in mine roadways, road tunnels and water conservancy culverts mainly play roles of combined arches, combined beams and suspension to support and reinforce surrounding rocks, so that the strength of the surrounding rocks bearing pressure is increased, and the anchor rods are an active support form. As an effective tunnel supporting mode, the anchor bolt support not only can obviously improve the tunnel supporting effect and enhance the stability of surrounding rocks, but also can save a large amount of supporting and maintaining cost.

An expansion anchor rod disclosed by the retrieval application No. 201821758013.5 comprises a shell, a push rod, a striker rod, a buckle, an expansion barb, a fixing bulge, a spring, a soil drilling tip and a reinforcing head, wherein the push rod is inserted in the shell, the striker rod is contacted with the push rod through the inner aperture of the shell, and one end of the striker rod is provided with the reinforcing head; the buckle is welded at one end of the push rod; the expansion barb is arranged in an opening in the shell, the inner side of the tail end of the shell is provided with a hole, and the inside of the hole is connected with a fixing bulge through a spring; the drill tip comprises a fixed block, a fixed column and a ground breaking thread, wherein: the fixed block welding is in the upper end of boring native point, and the upper end welding of fixed block has the fixed column, and the surface of this boring native point is provided with the screw thread that breaks ground. Although its inflation barb and the setting of boring soil point, it is fixed firm, be difficult for droing, the mounting means is simple, fixed effect is ideal, the marketing and the application of being convenient for, but rock stratum and the soil body at the job site are mostly harder, lead to it to punch earlier equally when the installation, and its fixed prominent position is fixed, this is higher to the requirement of the diameter in the hole of beating in advance, the hole is too big or too little all can not play the fixed action, lead to the stock to drop easily, influence the stability of stock. Therefore, there is a need to provide a new expansion anchor rod to solve the above technical problems.

Disclosure of Invention

The invention solves the technical problem of providing the expansion anchor rod which is convenient to use, has good stability and can prevent the falling anchor rod from falling off from the hole.

In order to solve the above technical problems, the present invention provides an expansion anchor comprising: a housing; the anchor blocks are uniformly arranged on two sides of the shell; the extrusion blocks are fixedly arranged on the anchor blocks respectively and are positioned in the shell; the tail block is fixedly arranged at the top end of the shell; the screw is installed on the tail block in a threaded mode, and the bottom end of the screw extends into the shell; the rotating block is positioned above the tail block and is fixedly connected with the top end of the screw rod; the circular table blocks are fixedly sleeved on the outer side of the screw rod and are located in the shell.

Preferably, the outer side thread of the screw rod is sleeved with a plurality of uniformly distributed stabilizing rings, and the outer walls of the stabilizing rings are fixedly connected with the inner wall of the shell.

Preferably, the tail block and the rotating block are both arranged in a hexagonal shape.

Preferably, a plurality of mounting holes distributed along the axial direction are formed in the inner walls of the two sides of the shell, and the anchor blocks are located in the corresponding mounting holes and fixedly connected with the inner walls of the bottoms of the corresponding mounting holes.

Preferably, the anti-dropping device further comprises a continuous anti-dropping mechanism, the continuous anti-dropping mechanism is installed in the shell, and the continuous anti-drop mechanism is connected with the bottom end of the screw rod and comprises a sliding block, a plurality of wedge-shaped grooves, two mounting blocks, two clamping blocks and two springs, the sliding block is rotatably arranged at the bottom end of the screw rod, two sides of the sliding block are respectively connected with the inner walls of two sides of the shell in a sliding way, the wedge-shaped groove is arranged at two sides of the sliding block, the two mounting blocks are respectively and fixedly arranged on the inner walls at two sides of the shell, the two clamping blocks are respectively hinged at the ends, close to each other, of the two mounting blocks, the ends, far away from each other, of the two springs are respectively and fixedly arranged on the inner walls at two sides of the shell, the ends, close to each other, of the two springs are respectively connected with the two clamping blocks, one end of each clamping block, which is far away from the corresponding mounting block, extends into the corresponding wedge-shaped groove.

Preferably, the rotation groove has been seted up to the bottom of screw rod, the top fixed mounting of sliding block has the dwang, the top of dwang extends to rotate the inslot and with the inner wall rotation connection in rotation groove.

Preferably, the two ends of the mounting blocks, which are close to each other, are provided with hinge grooves with the bottoms being open, the two fixture blocks are rotatably mounted in the two hinge grooves respectively, and the tops of the fixture blocks are in contact with the inner walls of the tops of the hinge grooves correspondingly.

Compared with the related art, the expansion anchor rod provided by the invention has the following beneficial effects:

the invention provides an expansion anchor rod, which can improve the stability of a screw rod by arranging a plurality of stable rings and provide a plurality of supporting points for the screw rod, thereby improving the stability of the whole expansion anchor rod; the tail block and the rotating block are arranged to be hexagonal, so that when the rotating block is rotated to enable the whole expansion anchor rod to rotate, the tail block can be fixed by using a wrench, and the normal operation of the whole anchor rod can be guaranteed; can be when the screw rod moves down to different positions through continuous anti-drop mechanism, the fixture block still is in corresponding wedge groove, can be when the hole is great relatively or relatively less, continuous anti-drop mechanism all can play anti-drop's effect, can realize that the installation of inflation stock is fixed after, the unable upward movement of screw rod to can effectually prevent that the inflation stock from droing in the hole.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of an expansion anchor according to the present invention;

FIG. 2 is a schematic top cross-sectional view of portion A of FIG. 1;

fig. 3 is an enlarged schematic structural view of a portion B shown in fig. 1.

Reference numbers in the figures: 1. the device comprises a shell, 2, anchor blocks, 3, extrusion blocks, 4, a stable ring, 5, tail blocks, 6, a screw rod, 7, a rotating block, 8, a circular truncated cone block, 9, a sliding block, 10, a wedge-shaped groove, 11, an installation block, 12, a clamping block, 13 and a spring.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural view of a preferred embodiment of an expansion anchor according to the present invention; FIG. 2 is a schematic top cross-sectional view of portion A of FIG. 1; fig. 3 is an enlarged schematic structural view of a portion B shown in fig. 1. The expansion anchor rod includes: a housing 1; the anchor blocks 2 are uniformly arranged on two sides of the shell 1; the extrusion blocks 3 are respectively and fixedly arranged on the anchor blocks 2, and the extrusion blocks 3 are all positioned in the shell 1; the tail block 5 is fixedly arranged at the top end of the shell 1; the screw rod 6 is installed on the tail block 5 in a threaded mode, and the bottom end of the screw rod 6 extends into the shell 1; the rotating block 7 is positioned above the tail block 5, and the rotating block 7 is fixedly connected with the top end of the screw rod 6; a plurality of round platform pieces 8, it is a plurality of round platform piece 8 is all fixed the cover and is established the outside of screw rod 6, and is a plurality of round platform piece 8 all is located in shell 1. The outside screw thread cover of screw rod 6 is equipped with a plurality of evenly distributed's firm ring 4, the outer wall of firm ring 4 with the inner wall fixed connection of shell 1.

The tail block 5 and the rotating block 7 are both arranged in a hexagonal shape.

The inner walls of the two sides of the shell 1 are provided with a plurality of mounting holes distributed along the axial direction, and the anchor blocks 2 are located in the corresponding mounting holes and fixedly connected with the inner walls of the bottoms of the corresponding mounting holes.

The continuous anti-falling mechanism comprises a sliding block 9, a plurality of wedge-shaped grooves 10, two mounting blocks 11, two clamping blocks 12 and two springs 13, the sliding block 9 is rotatably installed at the bottom end of the screw rod 6, two sides of the sliding block 9 are respectively connected with the inner walls of two sides of the shell 1 in a sliding manner, the wedge-shaped grooves 10 are respectively arranged at two sides of the sliding block 9, two installation blocks 11 are respectively fixedly installed on the inner walls of two sides of the shell 1, two fixture blocks 12 are respectively hinged at one ends of the two installation blocks 11 close to each other, one ends of the two springs 13 far away from each other are respectively fixedly installed on the inner walls of two sides of the shell 1, one ends of the two springs 13 close to each other are respectively connected with the two fixture blocks 12, one side of the clamping block 12, which is far away from the corresponding mounting block 11, extends into the corresponding wedge-shaped groove 10.

The rotation groove has been seted up to the bottom of screw rod 6, the top fixed mounting of sliding block 9 has the dwang, the top of dwang extends to rotate the inslot and with the inner wall rotation connection in rotation groove.

Two the articulated groove that the bottom is the open-ended is all seted up to the one side that installation piece 11 is close to each other, and two fixture blocks 12 rotate respectively and install in two articulated grooves, just the top of fixture block 12 contacts with corresponding the top inner wall in articulated groove.

The working principle of the expansion anchor rod provided by the invention is as follows:

when the anchor rod is used, the whole expansion anchor rod is firstly inserted into a pre-opened hole, in the process, if the hole is relatively small, the whole expansion anchor rod 5 is plugged into the hole through the tail striking block 5, then the rotating block 7 is rotated, the rotating block 7 drives the screw rod 6 to rotate and move downwards, the rotating block 7 drives the circular platform block 8 to move downwards, the circular platform block 8 moves downwards and simultaneously pushes the two corresponding extrusion blocks 3 to move, so that the two extrusion blocks 3 are mutually far away, the extrusion blocks 3 push the anchor blocks 2 to move, so that the two anchor blocks 2 are mutually far away, so that the anchor blocks 2 are in close contact with the inner wall of the hole, and the whole anchor rod can be fixed in the hole;

because the sliding block 9 is connected with the screw 6 in a rotating manner, and the sliding block 9 is connected with the inner wall of the shell 1 in a sliding manner, when the screw 6 rotates, the sliding block 9 moves downwards, the sliding block 9 drives the wedge-shaped groove 10 to move downwards, so that the fixture block 12 moves out of the wedge-shaped groove 10 below, when the wedge-shaped groove 10 above is just opposite to the fixture block 12, under the action of the elastic force of the spring 13, the spring 13 pushes the fixture block 12 to enter the wedge-shaped groove 10 above, the operation is repeated until the screw 6 stops rotating, and at the moment, the fixture block 12 is clamped into the corresponding wedge-shaped groove 10.

the invention provides an expansion anchor rod, which can improve the stability of a screw rod 6 by arranging a plurality of stable rings 4 and provide a plurality of supporting points for the screw rod 6, thereby improving the stability of the whole expansion anchor rod, and can provide a continuous lateral force for an extrusion block 3 when a circular truncated cone block 8 rotates and moves downwards by matching the circular truncated cone block 8 with the extrusion block 3, thereby realizing the continuous extrusion of an anchor block 2; by arranging the tail block 5 and the rotating block 7 to be hexagonal, the tail block 5 can be fixed by a wrench when the rotating block 7 is rotated to enable the whole expansion anchor rod to rotate, so that the normal operation of the whole anchor rod can be ensured; can be when screw rod 6 downstream is to different positions through continuous anti-drop mechanism, fixture block 12 still is in corresponding wedge groove 10, can be when the hole is great relatively or relatively less, and continuous anti-drop mechanism all can play anti-drop's effect, can realize that inflation stock installation is fixed the back, and screw rod 6 can't upward movement to can effectually prevent that the inflation stock from droing in the hole.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An expansion bolt, comprising:

a housing;

the anchor blocks are uniformly arranged on two sides of the shell;

the extrusion blocks are fixedly arranged on the anchor blocks respectively and are positioned in the shell;

the tail block is fixedly arranged at the top end of the shell;

the screw is installed on the tail block in a threaded mode, and the bottom end of the screw extends into the shell;

the rotating block is positioned above the tail block and is fixedly connected with the top end of the screw rod;

the circular table blocks are fixedly sleeved on the outer side of the screw rod and are located in the shell.

2. The expansion anchor rod of claim 1, wherein the outer thread of the screw rod is sleeved with a plurality of evenly distributed stabilizing rings, and the outer walls of the stabilizing rings are fixedly connected with the inner wall of the shell.

3. An expansion bolt according to claim 1, wherein the tail block and the rotation block are each in a hexagonal arrangement.

4. The expansion anchor rod of claim 1, wherein a plurality of mounting holes distributed along the axial direction are formed in the inner walls of the two sides of the shell, and the anchor blocks are located in the corresponding mounting holes and fixedly connected with the inner walls of the bottoms of the corresponding mounting holes.

5. The expansion anchor rod according to claim 1, further comprising a continuous anti-falling mechanism, wherein the continuous anti-falling mechanism is installed in the housing and connected to the bottom end of the screw rod, the continuous anti-falling mechanism comprises a sliding block, a plurality of wedge-shaped grooves, two installation blocks, two fixture blocks and two springs, the sliding block is rotatably installed at the bottom end of the screw rod, two sides of the sliding block are respectively slidably connected to inner walls of two sides of the housing, the wedge-shaped grooves are opened at two sides of the sliding block, the two installation blocks are respectively fixedly installed on inner walls of two sides of the housing, the two fixture blocks are respectively hinged to one ends of the two installation blocks close to each other, one ends of the two springs far away from each other are respectively fixedly installed on inner walls of two sides of the housing, one ends of the two springs close to each other are respectively connected to the, one end of each clamping block, which is far away from the corresponding mounting block, extends into the corresponding wedge-shaped groove.

6. The expansion anchor rod of claim 5, wherein the bottom end of the screw rod is provided with a rotating groove, the top of the sliding block is fixedly provided with a rotating rod, and the top end of the rotating rod extends into the rotating groove and is rotatably connected with the inner wall of the rotating groove.

7. The expansion anchor rod according to claim 6, wherein the two mounting blocks are provided with hinge grooves with an open bottom at the ends close to each other, the two clamping blocks are rotatably mounted in the two hinge grooves respectively, and the tops of the clamping blocks are in contact with the inner walls of the tops of the corresponding hinge grooves.