CN219731985U

CN219731985U - Expansion prestressed anchor rod

Info

Publication number: CN219731985U
Application number: CN202320508525.0U
Authority: CN
Inventors: 沈维铎; 张海淇; 江曼黎; 周杨
Original assignee: Hubei Yulong Water Conservancy And Hydropower Engineering Co ltd
Current assignee: Hubei Yulong Water Conservancy And Hydropower Engineering Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-22
Anticipated expiration: 2033-03-16

Abstract

The utility model relates to an expanded pre-stressed anchor, comprising: an anchor body; the grouting assembly comprises a grouting pipe and a plurality of anchor clamps, and the anchor clamps are arranged between the anchor rod main body and the grouting pipe and used for fixing the grouting pipe; the grouting device comprises a grouting pipe, a sealing mechanism and an anchor hole, wherein the sealing mechanism is arranged at one end of the grouting pipe and comprises a dust cover, two clamping plates and an elastic component, the dust cover is in contact with one end of the grouting pipe, the two clamping plates are hinged to the dust cover relatively, the clamping plates are positioned inside the grouting pipe, and the elastic component is connected with the two clamping plates.

Description

Expansion prestressed anchor rod

Technical Field

The utility model relates to the technical field of road slope construction, in particular to an expansion prestressed anchor rod.

Background

The prestress anchor rod is mainly applied to supporting engineering of slopes and caverns in China, prestress of anchor rod supporting is formed by the fact that an anchor rod body is pulled and acts on rock mass of an anchoring area through a tray and an anchoring end, and at the moment, axial tensile force born by the anchor rod body is anchor rod pretightening force.

When road engineering construction, need to support the side slope, present prestressing force anchor rope pole commonly used is supported the side slope, current prestressing force stock is processed the preparation at the job site generally, mainly include the stock body unloading, free section and anchor section rust cleaning, the binding of connector connection and slip casting pipe, the stock of completion of preparation is sent into inside the anchor eye according to the construction requirement, but in actual operation in-process, the slip casting mouth of pipe is usually not sealed, the in-process of sending causes slip casting pipe to block up easily, for this reason, the staff increases the slip casting pressure of slip casting pipe through grouting equipment, in-process slip casting body can take place to break, and slip casting pipe can be scratched to the too big stopper of slip casting pressure, thereby influence the effect of slip casting.

In order to solve the problems, an expansion prestressed anchor rod is designed.

Disclosure of Invention

The embodiment of the utility model provides an expansion prestressed anchor rod, which aims to solve the problem that the orifice of a grouting pipe is not normally sealed in the related art, and the grouting pipe is easy to block in the feeding process.

In a first aspect, there is provided an expanded pre-stressed anchor comprising:

an anchor body;

the grouting assembly comprises a grouting pipe and a plurality of anchor clamps, and the anchor clamps are arranged between the anchor rod main body and the grouting pipe and used for fixing the grouting pipe;

the sealing mechanism is arranged at one end of the grouting pipe and comprises a dust cover, two clamping plates and an elastic component, the dust cover is in contact with one end of the grouting pipe, the two clamping plates are hinged to the dust cover relatively, the clamping plates are located inside the grouting pipe, the elastic component is connected with the two clamping plates and used for driving one end of the clamping plates to apply pressure to the inner wall of the grouting pipe.

In some embodiments, the anchor body includes an anchor section, a free section, a connector, and an isolation sleeve, the anchor section and the free section being connected by the connector, the isolation sleeve being sleeved outside the free section.

In some embodiments, the anchor ear includes two fastening rings and two sets of bolts, two grooves respectively adapted to the grouting pipe and the isolation sleeve are formed in the fastening rings, and the two fastening rings are connected through the two sets of bolts.

In some embodiments, the elastic component includes dead lever, lantern ring, two springs and pressurized disc, the dead lever sets up on the shield, the lantern ring slides and sets up on the dead lever, two the spring sets up relatively on the lantern ring, just the lantern ring one end is kept away from to the spring is connected with corresponding cardboard, pressurized disc sets up in the lantern ring one side of keeping away from the shield.

In some embodiments, the isolation sleeve further comprises a plurality of antenna-type centralizers, wherein the antenna-type centralizers are equidistantly arranged on the isolation sleeve.

In some embodiments, the anchor segment and the free segment are each provided with a corrosion-resistant coating comprising a corrosion-resistant paint and a corrosion-resistant grease.

In some embodiments, the grouting device further comprises a base plate, wherein the base plate is arranged on the anchoring section, and the base plate is provided with insertion holes matched with the grouting pipes.

The embodiment of the utility model provides an expansion prestressed anchor rod, which is characterized in that a grouting pipe is fixed on an anchor rod main body through a hoop, a clamping plate is plugged into a pipe orifice of the grouting pipe through pressing the clamping plate, the pipe orifice of the grouting pipe is sealed through a dust cover, and elastic force is applied to the clamping plate through an elastic component, so that the clamping plate is tightly contacted with the inside of the grouting pipe, and the purpose of sealing the pipe orifice of the grouting pipe is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a three-dimensional structure according to an embodiment of the present utility model;

FIG. 2 is a schematic three-dimensional view of a sealing mechanism according to an embodiment of the present utility model;

fig. 3 is a three-dimensional schematic diagram of a hoop provided by an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a free section provided by an embodiment of the present utility model;

fig. 5 is a cross-sectional view of an anchor segment provided in an embodiment of the present utility model.

In the figure: 1. an anchor body; 11. an anchor section; 12. a free section; 13. a connector; 14. an isolation sleeve; 2. an antenna-type centralizer; 3. grouting components; 31. grouting pipe; 32. a hoop; 321. a fastening ring; 322. a bolt; 5. a sealing mechanism; 51. a dust cover; 52. a clamping plate; 53. an elastic component; 531. a fixed rod; 532. a collar; 533. a spring; 534. a pressure plate; 6. an anti-corrosion coating; 61. anticorrosive paint; 62. anti-corrosion grease; 7. a backing plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model provides an expansion prestressed anchor rod, which can solve the problem that a grouting pipe orifice is not usually sealed in the related art, and a grouting pipe is easy to block in the feeding process.

Referring to fig. 1-3, an expanded pre-stressed anchor includes; the grouting device comprises an anchor rod main body 1, a grouting assembly 3 and a sealing mechanism 5, wherein the grouting assembly 3 comprises a grouting pipe 31 and a plurality of anchor hoops 32, and the anchor hoops 32 are arranged between the anchor rod main body 1 and the grouting pipe 31 and are used for fixing the grouting pipe 31; the airtight mechanism 5 is disposed at one end of the grouting pipe 31, the airtight mechanism 5 includes a dust cover 51, two clamping plates 52 and an elastic component 53, the dust cover 51 contacts with one end of the grouting pipe 31, the two clamping plates 52 are relatively hinged on the dust cover 51, the clamping plates 52 are located inside the grouting pipe 31, the elastic component 53 is connected with the two clamping plates 52, and is used for driving one end of the clamping plates 52 to apply pressure to the inner wall of the grouting pipe 31.

During actual use, the grouting pipe 31 is fixed on the anchor rod main body 1 through the anchor ear 32, the clamping plate 52 is plugged into the pipe orifice of the grouting pipe 31 through pressing the clamping plate 52, the pipe orifice of the grouting pipe 31 is sealed through the dust cover 51, and then the elastic force is applied to the clamping plate 52 through the elastic component 53, so that the clamping plate 52 is in close contact with the grouting pipe and the inside of the grouting pipe 31, and the purpose of sealing the opening of the grouting pipe 31 is achieved.

Specifically, as shown in fig. 1, the anchor rod main body 1 in this embodiment includes an anchor section 11, a free section 12, a connector 13, and an isolation sleeve 14, wherein the anchor section 11 and the free section 12 are connected by the connector 13, and the isolation sleeve 14 is sleeved outside the free section 12.

In a specific construction process, according to the requirements of a side slope support, selecting steel bars with proper lengths for cutting, then performing rust removal treatment, wherein the two treated steel bars are an anchoring section 11 and a free section 12 respectively, the free section 12 is communicated with a grouting pipe and is lifted into an anchor hole, the anchoring section 11 and the free section 12 are connected through a connector 13, and then a spacer sleeve 14 is sleeved on the free section 12.

Preferably, as shown in fig. 4 and 5, the anchoring section 11 and the free section 12 are provided with a corrosion-resistant coating 6, and the corrosion-resistant coating 6 comprises corrosion-resistant paint 61 and corrosion-resistant grease 62.

It will be appreciated that the anchor segment 11 and the free segment 12 are typically coated with a corrosion resistant paint 61 before the spacer sleeve 14 is placed over the free segment 12, and dried and then coated with a corrosion resistant grease 62 for rust protection.

Preferably, the anchor ear 32 in this embodiment includes two fastening rings 321 and two sets of bolts 322, the fastening rings 321 are provided with two grooves respectively adapted to the grouting pipe 31 and the isolation sleeve 14, and the two fastening rings 321 are connected by the two sets of bolts 322.

In the actual operation process, two fastening rings 321 are sleeved on the fastening rings 321 one by one respectively, and then are fixed through bolts 322, so that compared with the binding of steel wires, the mode can ensure that the grouting pipe 31 follows the anchor rod main body 1 to be carried out to the designated position inside the anchor hole together, and the grouting pipe 31 is prevented from sliding in the feeding process, so that adverse effects are caused on injection molding.

Specifically, as shown in fig. 1 and 2, the elastic component 53 in this embodiment includes a fixing rod 531, a collar 532, two springs 533, and a compression disc 534, where the fixing rod 531 is disposed on the dust cover 51, the collar 532 is slidably disposed on the fixing rod 531, two springs 533 are disposed on the collar 532 opposite to each other, and one end of the spring 533 away from the collar 532 is connected to the corresponding clamping plate 52, and the compression disc 534 is disposed on a side of the collar 532 away from the dust cover 51.

In the actual operation process, the clamping plates 52 exert elastic force on the spring 533 by pressing the two clamping plates 52, meanwhile, the other end of the spring 533 drives the lantern ring 532 to slide on the fixed rod 531, then the two clamping plates 52 are plugged into the grouting pipe 31, the purpose of sealing the grouting pipe 31 is achieved through the dust cover 51, meanwhile, the clamping plates 52 lose pressure, the spring 533 returns to the original state, and the two clamping plates 52 are reversely opened and clamped in the grouting pipe 31;

in the grouting process, the pressure generated by the slurry impacts the pressed disc 534, the pressed disc 534 drives the lantern ring 532 to slide, so that tension is generated on the spring 533, and accordingly, the two clamping plates 52 are driven to move in opposite directions, one ends of the clamping plates 52 are far away from the inner wall of the grouting pipe 31, and therefore the sealing mechanism 5 can be easily separated, and smooth grouting operation is ensured.

It should be noted that, the compression disc 534 in this embodiment includes a disc and two round rods, two of which are disposed opposite to each other on a side of the collar 532 away from the dust cap 51, and one end of the round rod away from the collar 532 is connected to the disc, and it is understood that the diameter of the disc may be selectively adapted according to the size of grouting pressure.

Preferably, in order to ensure that the free section 12 handles the central position of the anchor hole and makes the stress uniform, the embodiment also comprises a plurality of antenna-type centralizers 2, and a plurality of the antenna-type centralizers 2 are equidistantly arranged on the isolation sleeve 14.

When in use, the antenna-type centralizer 2 is sleeved on the isolation sleeve 14, and the free section 12 is supported by the taper angles which are equidistantly distributed on the antenna-type centralizer 2, so that the free section is positioned at the center of the anchor hole.

It will be appreciated that the dimensions of the feeler-centralizer 2 are adapted to the different anchor openings according to their diameters, allowing it to be adapted to different anchor openings.

Specifically, as shown in fig. 1, the present embodiment further includes a pad 7, where the pad 7 is disposed on the anchoring section 11, and a jack adapted to the grouting pipe 31 is provided on the pad 7.

In the grouting process, the backing plate 7 seals the anchor holes, so that the slurry is prevented from falling back, and the slurry is prevented from being wasted.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present utility model, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. 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 utility model. Thus, the present utility model 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. An expanded pre-stressed anchor, comprising:

a bolt body (1);

the grouting device comprises a grouting assembly (3), wherein the grouting assembly (3) comprises a grouting pipe (31) and a plurality of hoops (32), and the hoops (32) are arranged between an anchor rod main body (1) and the grouting pipe (31) and are used for fixing the grouting pipe (31);

the sealing mechanism (5), sealing mechanism (5) set up the one end at slip casting pipe (31), sealing mechanism (5) include shield (51), two cardboard (52) and elastic component (53), shield (51) and slip casting pipe (31) one end contact, two cardboard (52) are articulated relatively on shield (51), just cardboard (52) are located slip casting pipe (31) inside, elastic component (53) are connected with two cardboard (52) and are used for the drive cardboard (52) one end is right slip casting pipe (31) inner wall application pressure.

2. An expanded pre-stressed anchor as claimed in claim 1, wherein:

the anchor rod main body (1) comprises an anchoring section (11), a free section (12), a connector (13) and an isolation sleeve (14), wherein the anchoring section (11) and the free section (12) are connected through the connector (13), and the isolation sleeve (14) is sleeved on the outer side of the free section (12).

3. An expanded pre-stressed anchor as claimed in claim 2, wherein:

the anchor ear (32) comprises two fastening rings (321) and two groups of bolts (322), wherein the fastening rings (321) are provided with two grooves which are respectively matched with the grouting pipe (31) and the isolation sleeve (14), and the two fastening rings (321) are connected through the two groups of bolts (322).

4. An expanded pre-stressed anchor as claimed in claim 1, wherein:

the elastic component (53) includes dead lever (531), lantern ring (532), two springs (533) and pressurized disc (534), dead lever (531) set up on shield (51), lantern ring (532) slip sets up on dead lever (531), two spring (533) set up relatively on lantern ring (532), just lantern ring (532) one end and corresponding cardboard (52) are kept away from to spring (533) are connected, pressurized disc (534) set up in lantern ring (532) one side of keeping away from shield (51).

5. An expanded pre-stressed anchor as claimed in claim 2, wherein:

the device also comprises a plurality of antenna-type centralizers (2), and the antenna-type centralizers (2) are equidistantly arranged on the isolation sleeve (14).

6. An expanded pre-stressed anchor as claimed in claim 2, wherein:

the anti-corrosion coating (6) is arranged on the anchoring section (11) and the free section (12), and the anti-corrosion coating (6) comprises anti-corrosion paint (61) and anti-corrosion grease (62).

7. An expanded prestressed rock bolt according to claim 6, wherein:

the grouting device further comprises a base plate (7), wherein the base plate (7) is arranged on the anchoring section (11), and insertion holes matched with the grouting pipes (31) are formed in the base plate (7).