CN215057509U

CN215057509U - Valve-controlled recyclable hydraulic yielding anchor rod

Info

Publication number: CN215057509U
Application number: CN202121518906.4U
Authority: CN
Inventors: 王海超; 姜大志; 李世荣; 姜佩弦; 周默超; 彭胜男
Original assignee: Nantong Institute of Technology
Current assignee: Nantong Institute of Technology
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-12-07
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a recoverable hydraulic pressure of valve accuse lets presses stock relates to geotechnical engineering's technical field, including hydraulic sleeve, pull-out end cover, anchor end cover, piston body, piston rod and valve accuse part, hydraulic sleeve is filled with hydraulic oil in the top of piston body, and the piston rod is vertical to be passed and to be link up the mouth and be connected with the piston body, is equipped with a columniform groove of lining up on the piston body, and the valve accuse part is located and is link up the inslot and specifically include lift piece, compression spring, block piece, seal block, pressure-bearing piece and transmission pipe. When rock pressure increases and stretch-draw piston rod for hydraulic pressure chamber pressure increases, until overflow passageway is switched on, hydraulic oil can be discharged through overflow passageway, accomplishes once letting the pressure, when treating rock pressure steady, overflow passageway can be blockked once more, makes it have anti rock pressure bearing capacity. The maximum yielding displacement can be realized by repeating the steps for many times.

Description

Valve-controlled recyclable hydraulic yielding anchor rod

Technical Field

The utility model relates to a geotechnical engineering's technical field, concretely relates to recoverable hydraulic pressure of valve accuse lets presses stock.

Background

The yielding anchor rod is generally called as a prestressed yielding anchor rod, is simply a support protection tool, is used for increasing the constraint force on rocks, and is mainly applied to high-strength support of a large-deformation roadway of a high-pressure mine.

At present, the existing physical yielding anchor rod has the problems of small yielding stroke, one-time damaged physical damping type structure and the like, and has certain reliability and adaptability.

Disclosure of Invention

An object of the utility model is to provide a recoverable hydraulic pressure of valve accuse lets presses stock to solve the above-mentioned defect that leads to among the prior art.

A valve-controlled recyclable hydraulic yielding anchor rod comprises a hydraulic sleeve, a pull-out end cover, an anchoring end cover, a piston body, a piston rod and a valve control component, wherein the hydraulic sleeve is vertically arranged, the pull-out end cover and the anchoring end cover are respectively fixed at the upper end and the lower end of the hydraulic sleeve, a circular through hole is formed in the center of the pull-out end cover, the piston body is arranged on the inner side of the hydraulic sleeve in a sliding mode, hydraulic oil is filled in the hydraulic sleeve above the piston body, the piston rod vertically penetrates through the through hole and is connected with the piston body, a cylindrical through groove is formed in the piston body, the valve control component is arranged in the through groove and specifically comprises a lifting piece, a compression spring, a blocking piece, a sealing piece, a pressure bearing piece and a transmission pipe, the lifting piece and the sealing piece are respectively fixed at the bottom and the top of the through groove, and a circular oil outlet is formed in the center of the lifting piece, compression spring connects in the upside of lifting the piece, it connects in compression spring's top to block the piece, it is spherical structure to block the piece, the downside correspondence of sealed piece is equipped with hemispherical holding tank, the center of sealed piece is equipped with the columniform guide way, the top of sealed piece is located to the pressure-bearing piece level, the center of pressure-bearing piece is equipped with the overflow hole, the coaxial below of locating the overflow hole of transmission pipe is connected in the downside of pressure-bearing piece, transmission pipe sliding connection is in the guide way, the lower part of transmission pipe is equipped with the oil hole of biography.

Preferably, a threaded hole is formed in the side of the through hole of the pull-out end cover, and a blocking screw is installed on the upper side of the threaded hole.

Preferably, a circular oil drain hole is formed in the center of the anchoring end cover.

Compared with the prior art, the utility model provides a recoverable hydraulic pressure of valve accuse lets presses the stock to have following advantage: in the initial state, the piston rod is in the state of the shortest outward extension and is also in the state of the maximum bearing capacity. When rock pressure increases and stretch-draw piston rod, the piston body has the motion trend that shifts up for hydraulic pressure chamber pressure increases, and the bearing plate passes power through the transfer pipe and gives the stopper, and until compression spring takes place the shrink, the stopper breaks away from and breaks away from the contact with sealed piece holding tank, by the overflow hole, the transfer pipe, pass the oilhole, the overflow passageway that link up groove and oil outlet and constitute is switched on, and hydraulic oil can be discharged through the overflow passageway, accomplishes once letting the pressure, when treating rock pressure steady, the overflow passageway can be blockked once more, makes it have anti rock pressure bearing capacity. The maximum yielding displacement can be realized by repeating the steps for many times.

Drawings

Fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention.

Fig. 2 is a schematic structural diagram of the overall explosion of the present invention.

Fig. 3 to 5 are schematic structural views of a valve control unit according to the present invention.

Wherein:

10-a hydraulic sleeve; 20-pulling out the end cover; 20 a-a through opening; 20 b-a threaded hole; 30-blocking screws; 40-anchoring end covers; 40 a-oil drain hole; 50-a piston body; 50 a-a through slot; 60-a piston rod; 70-a valve control block; 701-lifting a sheet; 701 a-oil outlet; 702-a compression spring; 703-a blocking block; 704-a sealing block; 704 a-a receiving tank; 704 b-guide grooves; 705-pressure bearing sheet; 705 a-overflow hole; 706-a transfer tube; 706 a-oil transfer hole.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 5, the valve-controlled recoverable hydraulic yielding anchor rod comprises a hydraulic sleeve 10, a pull-out end cover 20, an anchoring end cover 40, a piston body 50, a piston rod 60 and a valve control part 70, wherein the hydraulic sleeve 10 is vertically arranged, the pull-out end cover 20 and the anchoring end cover 40 are respectively fixed at the upper end and the lower end of the hydraulic sleeve 10, a circular through hole 20a is formed in the center of the pull-out end cover 20, the piston body 50 is slidably arranged at the inner side of the hydraulic sleeve 10, the hydraulic sleeve 10 is filled with hydraulic oil above the piston body 50, the piston rod 60 vertically penetrates through the through hole 20a and is connected with the piston body 50, a cylindrical through groove 50a is formed in the piston body 50, the valve control part 70 is arranged in the through groove 50a and specifically comprises a lifting piece 701, a compression spring 702, a blocking block 703, a sealing block, a pressure-bearing piece 705 and a transmission pipe 706, the lifting sheet 701 and the sealing block 704 are respectively fixed at the bottom and the top of the through groove 50a, a circular oil outlet hole 701a is formed in the center of the lifting sheet 701, the compression spring 702 is connected to the upper side of the lifting sheet 701, the blocking block 703 is connected to the top end of the compression spring 702, the blocking block 703 is of a spherical structure, a hemispherical accommodating groove 704a is correspondingly formed in the lower side of the sealing block 703, a cylindrical guide groove 704b is formed in the center of the sealing block 703, the pressure bearing sheet 705 is horizontally arranged above the sealing block 704, an overflow hole 705a is formed in the center of the pressure bearing sheet 705, the transfer pipe 706 is coaxially arranged below the overflow hole 705a and connected to the lower side of the pressure bearing sheet 705, the transfer pipe 706 is slidably connected into the guide groove 704b, and an oil transfer hole 706a is formed in the lower portion of the transfer pipe 706.

In the present embodiment, the pull-out end cap 20 is provided with a threaded hole 20b beside the through hole 20a, and a blocking screw 30a is mounted on the upper side of the threaded hole 20 b. The threaded bore 20b may be used to refill with hydraulic oil to enable re-use of the yield bolt.

In this embodiment, the center of the anchor cover 40 is provided with a circular oil drain hole 40 a. The oil discharge hole 40a prevents a vacuum damping effect from being formed in the lower space of the piston body 50, and simultaneously allows the hydraulic oil discharged during the compression process to be discharged through the oil discharge hole 40a and recycled by using a plastic bag or the like.

In this embodiment, the valve-controlled recoverable hydraulic yielding bolt is in practical use: in the initial state, the piston rod 60 is in the state of the shortest outward extension and is also in the state of the maximum bearing force. When rock pressure is increased and the piston rod 60 is tensioned, the piston body 50 has a moving trend of moving upwards, so that the pressure of the hydraulic chamber is increased, the pressure bearing plate 705 transmits force to the blocking block 703 through the transmission pipe 706 until the compression spring 702 contracts, the blocking block 703 is separated from being in contact with the sealing block 704 accommodating groove 704a, an overflow channel formed by the overflow hole 705a, the transmission pipe 706, the oil transmission hole 706a, the through groove 50a and the oil outlet hole 701a is communicated, hydraulic oil is discharged through the overflow channel to complete primary yielding, and when the rock pressure is stable, the overflow channel is blocked again to enable the rock pressure resisting bearing capacity to be achieved. The maximum yielding displacement can be realized by repeating the steps for many times.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a recoverable hydraulic pressure of valve accuse lets pressure stock which characterized in that: the hydraulic cylinder comprises a hydraulic sleeve (10), a pull-out end cover (20), an anchoring end cover (40), a piston body (50), a piston rod (60) and a valve control component (70), wherein the hydraulic sleeve (10) is vertically arranged, the pull-out end cover (20) and the anchoring end cover (40) are respectively fixed at the upper end and the lower end of the hydraulic sleeve (10), a circular through hole (20a) is formed in the center of the pull-out end cover (20), the piston body (50) is arranged on the inner side of the hydraulic sleeve (10) in a sliding mode, hydraulic oil is filled in the hydraulic sleeve (10) above the piston body (50), the piston rod (60) vertically penetrates through the through hole (20a) and is connected with the piston body (50), a cylindrical through groove (50a) is formed in the piston body (50), and the valve control component (70) is arranged in the through groove (50a) and specifically comprises a lifting sheet (701), The lifting plate comprises a compression spring (702), a blocking block (703), a sealing block (704), a pressure-bearing plate (705) and a transfer pipe (706), wherein the lifting plate (701) and the sealing block (704) are respectively fixed at the bottom and the top of a through groove (50a), a circular oil outlet (701a) is formed in the center of the lifting plate (701), the compression spring (702) is connected to the upper side of the lifting plate (701), the blocking block (703) is connected to the top end of the compression spring (702), the blocking block (703) is of a spherical structure, a hemispherical accommodating groove (704a) is correspondingly formed in the lower side of the sealing block (704), a cylindrical guide groove (704b) is formed in the center of the sealing block (704), the pressure-bearing plate (705) is horizontally arranged above the sealing block (704), an overflow hole (705a) is formed in the center of the pressure-bearing plate (705), and the transfer pipe (706) is coaxially arranged below the overflow hole (705a) and connected to the lower side of the pressure-bearing plate (705), the transfer pipe (706) is connected in a sliding way in the guide groove (704b), and the lower part of the transfer pipe (706) is provided with an oil transfer hole (706 a).

2. The valve-controlled recoverable hydraulic yielding bolt of claim 1, wherein: the side of the pull-out end cover (20) at the through hole (20a) is provided with a threaded hole (20b), and the upper side of the threaded hole (20b) is provided with a blocking screw (30 a).

3. The valve-controlled recoverable hydraulic yielding bolt of claim 1, wherein: and a circular oil drain hole (40a) is formed in the center of the anchoring end cover (40).