CN214328854U

CN214328854U - Recoverable anchor rod

Info

Publication number: CN214328854U
Application number: CN202023328455.6U
Authority: CN
Inventors: 郑晓静; 朱胜祥; 余小龙; 魏定邦; 张坤
Original assignee: Gansu Highway Construction Group Co Ltd
Current assignee: Gansu Highway Construction Group Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-10-01
Anticipated expiration: 2030-12-30

Abstract

The utility model provides a recoverable stock. The anchor rod comprises a steel bar section, a recovery bin, a glass fiber rib and a limiting structure, wherein the recovery bin is of a hollow structure with a large upper cavity diameter and a small lower cavity diameter, the steel bar section is fixedly connected with the end part of the large-diameter cavity of the recovery bin through a threaded connector, and a glass fiber rib insertion hole is formed in the end surface of the small-diameter cavity of the recovery bin; the limiting structure comprises a limiting support, a spring and at least three limiting steel balls, the limiting support is arranged in a small-diameter cavity of the recovery bin, the upper portion of the limiting support is connected with the recovery bin through the spring, a limiting channel is arranged in the limiting support, the at least three limiting steel balls are distributed around the limiting channel, and the glass fiber rib is inserted into the limiting channel from a glass fiber rib insertion hole and is fixed and limited through the limiting steel balls. The utility model has the advantages of simple integral structure, the installation is convenient with the recovery, and the reinforcing bar of recovery can reuse, has practiced thrift construction cost, has reduced the production of lower building rubbish.

Description

Recoverable anchor rod

Technical Field

The utility model relates to a geotechnical engineering field specifically is a recoverable stock.

Background

The anchor bolt support is a reinforcing support method used in surface engineering such as side slopes and foundation pits and underground construction such as tunnels and stopes, and particularly adopts a method that a rod body made of metal or other materials is driven into a hole pre-drilled in surface rock soil or rock mass around a cavity, and surrounding rock (slope) and a stable rock mass are combined together by utilizing a special structure of the rod body or depending on the bonding effect so as to achieve the purpose of support.

Need interim support in deep basal pit, side slope excavation process, the reinforcing bar stock is as a supporting construction commonly used, and after the foundation ditch backfilled, the reinforcing bar often buried underground, causes the waste to pollute underground ground environment, bring inconvenience for the underground space development of later stage.

Disclosure of Invention

The utility model discloses to the problem that exists among the prior art, provide a recoverable stock, stock safe and reliable, recoverable reuse reduces underground construction waste's production.

In order to achieve the technical purpose, the utility model provides a recoverable anchor rod, the anchor rod comprises a reinforcing steel bar section, a recovery bin, a glass fiber rib and a limit structure arranged in the recovery bin, the recovery bin is a hollow structure with a large upper cavity diameter and a small lower cavity diameter, a threaded connector is arranged on the end surface of the large-diameter cavity of the recovery bin, a glass fiber rib insertion hole is arranged on the end surface of the small-diameter cavity, and the reinforcing steel bar section is fixedly connected with the recovery bin through the threaded connector; the limiting structure comprises a limiting support, a spring and at least three limiting steel balls embedded on the limiting support, the limiting support is arranged in a small-diameter cavity of a recovery bin, the upper portion of the limiting support is connected with the recovery bin through the spring, a limiting channel communicated with a glass fiber rib insertion hole is arranged in the middle of the limiting support, the at least three limiting steel balls are distributed around the limiting channel, the glass fiber rib is inserted into the recovery bin from the glass fiber rib insertion hole and penetrates through the limiting channel of the limiting support, and the limiting structure is fixed through the at least three limiting steel balls.

The utility model discloses better technical scheme: the recovery bin is of a cylindrical hollow structure with a large upper cavity diameter and a small lower cavity diameter; the limiting bracket is of an upper open type cylinder structure matched with the inner cavity of the recovery bin, and the whole height of the limiting bracket is smaller than the height of the inner cavity of the recovery bin; the limiting support is internally divided into an upper spring cavity and a lower limiting cavity by a partition plate, the spring is arranged in the spring cavity, the lower end of the spring is fixed on the partition plate at the bottom of the spring cavity, the upper end of the spring is fixed on the top surface of the inner cavity of the recovery bin, the limiting cavity at the lower part of the limiting support is arranged at the small-diameter part of the recovery bin under the action of the spring, at least three steel ball limiting holes are formed in the wall of the lower limiting cavity, the three limiting steel balls are arranged in the lower limiting cavity, and the part of the three limiting steel balls extends out of the steel ball limiting holes; the insertion opening of the limiting channel is arranged on the lower bottom surface of the limiting support and is in butt joint with the glass fiber rib insertion opening on the end surface of the recovery bin, and the outlet is arranged on the partition plate.

The utility model discloses better technical scheme: the diameter of the glass fiber rib insertion opening is equal to the outer diameter of the glass fiber rib, and a sheath matched with the diameter of the glass fiber rib (3) is arranged at the glass fiber rib insertion opening.

The utility model discloses better technical scheme: the number of the limiting steel balls is 3-4, the limiting steel balls are distributed around the limiting steel balls at equal intervals, and after the glass fiber ribs are inserted into the limiting channels, the outer walls of the 3-4 limiting steel balls are in contact with the inner wall of the small-diameter inner cavity of the recovery bin.

The utility model discloses better technical scheme: the diameter of the part of the glass fiber rib, which is arranged in the lower limiting cavity, is smaller than the diameters of other parts, and the small-diameter part of the glass fiber rib is excessive with the connecting parts of the upper and lower sections through an arc line.

The utility model discloses better technical scheme: the spring is a high-strength spring and is in a compressed state.

The utility model discloses better technical scheme: the recycling bin is made of metal, the shell is integrally forged, and the threaded connecting port is machined after forging.

The utility model discloses better technical scheme: the limiting bracket is of a metal structure.

The utility model skillfully utilizes the magnetic attraction of steel and iron, the material opposite sex that the glass fiber bar is not influenced by magnetic force, adopts the combination of the glass fiber bar and the steel bar, the glass fiber bar and the steel bar are connected by the magnetic force recovery device, the magnetic force recovery device comprises a recovery bin, a spring and a steel ball arranged in the recovery bin, the glass fiber bar can be fixed and clamped under the action of the spring and the steel ball under normal state, the anchoring effect of the steel bar anchor is not influenced, when the steel bar needs to be recovered, only a powerful electromagnetic chuck is needed to be clung to an anchor head, the magnetic force is transmitted by the common steel bar, the spring bin and the steel ball bin are displaced, the compression displacement of the spring is utilized and converted into the circumferential displacement of the steel ball, thereby the space of the glass fiber bar is increased, the steel bar is pulled outwards, the recovery device can be driven to be separated from the glass fiber, the glass fiber bar is kept underground as the steel bar of the anchoring section, because the shearing resistance of the glass fiber bar is poorer, easy digging out or shield passing, and small obstruction to later construction.

The utility model has the advantages of simple integral structure, the installation is convenient with the recovery, and the reinforcing bar of recovery can reuse, the utility model discloses reuse rate is high, practices thrift construction cost, reduces underground construction waste's production, the later stage underground space development of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of a middle limit bracket of the present invention;

FIG. 3 is a schematic cross-sectional view of the position of the limiting steel ball of the present invention;

FIG. 4 is a schematic structural view of the PVC bushing of the present invention;

fig. 5 is a schematic view of the recovery state of the present invention.

In the figure: 1-reinforcing bar section, 2-recovery bin, 3-glass fiber bar, 4-threaded connector, 5-glass fiber bar inserted hole, 6-spacing support, 600-spring chamber, 601-spacing chamber, 602-baffle, 7-spring, 8-spacing steel ball, 9-spacing hole of steel ball, 10-spacing passageway, 11-sheath, 12-PVC lag.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 4 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The embodiment provides a recoverable stock, as shown in fig. 1-3, the stock includes reinforcing bar section 1, retrieves storehouse 2, glass fiber muscle 3 and sets up the limit structure who retrieves in the storehouse 2, retrieve 2 metal in the storehouse and make, retrieve storehouse 2 and be the circular hollow structure that upper portion cavity diameter is big, lower part cavity diameter is little, have straight threaded connection mouth 4 at the terminal surface processing of retrieving 2 major diameter cavitys in the storehouse, glass fiber muscle inserted hole 5 has been seted up to the terminal surface of minor diameter cavity, reinforcing bar section 1 passes through threaded connection mouth 4 and retrieves 2 fixed connection in storehouse. The glass fiber rib 3 is inserted into the recovery bin 2 from the glass fiber rib insertion opening 5 and is fixed through a limiting structure. The diameter of the glass fiber rib insertion opening 5 is equal to the outer diameter of the glass fiber rib 3, and a sheath 11 matched with the diameter of the glass fiber rib 3 is arranged at the glass fiber rib insertion opening 5.

As shown in fig. 1 and 2, the limiting structure in the embodiment includes a metal limiting bracket 6, a spring 7 and three limiting steel balls 8 embedded on the limiting bracket 6, the limiting bracket 6 is an upper open type cylinder structure matched with the inner cavity of the recovery bin 2, and the whole height of the limiting bracket 6 is smaller than the height of the inner cavity of the recovery bin 2; spacing support 6 is inside to be separated into spring chamber 600 on upper portion and the spacing chamber 601 of lower part through baffle 602, and spacing support 6 is arranged in the cavity of retrieving storehouse 2, spring 7 is arranged in spring chamber 600, and the lower extreme is fixed on the baffle 602 of spring chamber 600 bottom, and the top surface at retrieving the 2 inner chambers in storehouse is fixed to the upper end, and spring 7 adopts high strength spring to be in compression state, and make spacing chamber 601 of spacing support 6 lower part arrange in and retrieve 2 minor diameter positions under spring 7's effect. A limiting channel 10 communicated with the glass fiber bar inserting hole 5 is arranged in the middle of the limiting bracket 6, the inserting hole of the limiting channel 10 is arranged on the lower bottom surface of the limiting bracket 6 and is butted with the glass fiber bar inserting hole 5 on the end surface of the recovery bin 2, and the outlet is arranged on the partition plate 602; three steel ball limiting holes 9 are formed in the wall of the lower limiting cavity 601, three limiting steel balls 8 are arranged in the lower limiting cavity 601 and are distributed around the limiting channel 10 at equal intervals by taking the limiting channel 10 as a center, and part of each limiting steel ball extends out of the steel ball limiting hole 9; the glass fiber rib 3 is inserted into the recovery bin 2 from the glass fiber rib insertion hole 5 and penetrates through the limiting channel 10 of the limiting support 6, the glass fiber rib is fixed through the three limiting steel balls 8, and when the glass fiber rib is fixed, the outer walls of the three limiting steel balls 8 are in contact with the inner wall of the small-diameter inner cavity of the recovery bin 2. The diameter of the part of the glass fiber rib 3, which is arranged in the lower limiting cavity 601, is smaller than the diameters of other parts, and the small-diameter part of the glass fiber rib 3 is in transition with the connecting parts of the upper and lower sections through an arc line, so that the insertion end of the glass fiber rib 3 is similar to a fire arrow and a thin waist limiting section.

The utility model discloses during the preparation, retrieve storehouse 2 and the polishing of steel bar connection department is into straight thread, and spring 7 is in compression state. The anchor rod reinforcing steel bar section 1 is connected with the recovery bin 2 through straight threads; one end of the glass fiber rib 3 needs to be processed into a fire arrow and a thin waist limiting section, the length of the glass fiber rib 3 is determined by calculating the length of the anchoring section, and the glass fiber rib 3 is inserted into the recovery bin 2. Constructing according to the general anchor rod construction process, drilling, placing the anchor rod, and grouting; generally, full-length grouting is carried out on a drilled hole to form a full-length cohesive anchor rod, and PVC pipes are sleeved on a recovery bin 2 and a common steel bar section 1 under the condition, as shown in figure 4; an anchoring section and a free section can also be formed, and the recovery bin 2 and the common steel bar section 1 are arranged in the free section (non-grouting section); finally, a backing plate and an anchorage device are arranged.

The utility model discloses during the recovery, directly demolish ground tackle, the backing plate, use powerful electromagnetic chuck to hug closely the anchor head, magnetic force passes through the transmission of ordinary reinforcing bar section 1, as shown in fig. 5, make spacing support 6 whole take place the displacement towards reinforcing bar section 1's one end in retrieving storehouse 2, spring compression, spacing chamber 601 of spacing support 6 just arranges the major diameter intracavity of retrieving storehouse 2 in after taking place the displacement, spacing steel ball 8 just can move outwards this moment, space grow between the spacing steel ball 8, directly extract reinforcing bar section 1 and retrieve storehouse 2, can realize retrieving, leave glass fiber muscle 3 in the ground.

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A recoverable stock which characterized in that: the anchor rod comprises a steel bar section (1), a recovery bin (2), a glass fiber rib (3) and a limiting structure arranged in the recovery bin (2), wherein the recovery bin (2) is of a hollow structure with a large upper cavity diameter and a small lower cavity diameter, a threaded connector (4) is arranged on the end surface of the large-diameter cavity of the recovery bin (2), a glass fiber rib insertion opening (5) is arranged on the end surface of the small-diameter cavity, and the steel bar section (1) is fixedly connected with the recovery bin (2) through the threaded connector (4); the limiting structure comprises a limiting support (6), a spring (7) and at least three limiting steel balls (8) embedded on the limiting support (6), the limiting support (6) is arranged in a small-diameter cavity of the recovery bin (2), the upper portion of the limiting support is connected with the recovery bin (2) through the spring (7), a limiting channel (10) communicated with a glass fiber rib insertion hole (5) is arranged in the middle of the limiting support (6), the at least three limiting steel balls (8) are distributed around the limiting channel (10), the glass fiber rib (3) is inserted into the recovery bin (2) from the glass fiber rib insertion hole (5) and penetrates through the limiting channel (10) of the limiting support (6), and the limiting steel balls are fixed through the at least three limiting steel balls (8).

2. A retrievable anchor rod according to claim 1, wherein: the recovery bin (2) is of a cylindrical hollow structure with a large upper cavity diameter and a small lower cavity diameter; the limiting bracket (6) is of an upper open type cylinder structure matched with the inner cavity of the recovery bin (2), and the whole height of the limiting bracket is smaller than that of the inner cavity of the recovery bin (2); the limiting support (6) is internally divided into an upper spring cavity (600) and a lower limiting cavity (601) through a partition plate (602), the spring (7) is arranged in the spring cavity (600), the lower end of the spring (7) is fixed on the partition plate (602) at the bottom of the spring cavity (600), the upper end of the spring (7) is fixed on the top surface of the inner cavity of the recovery bin (2), the limiting cavity (601) at the lower part of the limiting support (6) is arranged at the small-diameter part of the recovery bin (2) under the action of the spring (7), at least three steel ball limiting holes (9) are formed in the cavity wall of the lower limiting cavity (601), the three limiting steel balls (8) are arranged in the lower limiting cavity (601), and part of the limiting steel balls extend out of the steel ball limiting holes (9); the insertion opening of the limiting channel (10) is arranged on the lower bottom surface of the limiting bracket (6) and is in butt joint with the glass fiber rib insertion opening (5) on the end surface of the recovery bin (2), and the outlet is arranged on the partition plate (602).

3. A retrievable rock bolt according to claim 1 or claim 2, wherein: the diameter of the glass fiber rib insertion opening (5) is equal to the outer diameter of the glass fiber rib (3), and a sheath (11) matched with the diameter of the glass fiber rib (3) is arranged at the glass fiber rib insertion opening (5).

4. A retrievable rock bolt according to claim 1 or claim 2, wherein: the number of the limiting steel balls (8) is 3-4, the limiting steel balls are distributed around the limiting steel balls (8) at equal intervals, and after the glass fiber ribs (3) are inserted into the limiting channels (10), the outer walls of the limiting steel balls (8) are in contact with the inner wall of the small-diameter inner cavity of the recovery bin (2).

5. A retrievable rock bolt according to claim 1 or claim 2, wherein: the diameter of the part of the glass fiber rib (3) arranged in the lower limiting cavity (601) is smaller than that of other parts, and the small-diameter part of the glass fiber rib (3) is excessive with the connecting parts of the upper section and the lower section through an arc line.

6. A retrievable rock bolt according to claim 1 or claim 2, wherein: the spring (7) is a high-strength spring and is in a compressed state.

7. A retrievable rock bolt according to claim 1 or claim 2, wherein: the recycling bin is made of metal, the shell is integrally forged, and the threaded connecting port (4) is machined after forging.

8. A retrievable rock bolt according to claim 1 or claim 2, wherein: the limiting bracket (6) is of a metal structure.