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Anchor rod sealing structure, anchor rod and anchor rod injection molding method

A sealing structure and anchor rod technology, which is applied in the installation of anchor rods, valve casing structures, earthwork drilling and mining, etc., can solve the problems of controlling injection pressure and complex expansion structures, and achieves reduced volume, improved anchoring force, and reasonable structure Effect

Pending Publication Date: 2022-02-25
山东鑫国矿业技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the expansion structure of this type of anchor is relatively complicated, and because the anchor is buried inside the structure when used, it is difficult to control the injection pressure by observing the state of the anchor body

Method used

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  • Anchor rod sealing structure, anchor rod and anchor rod injection molding method
  • Anchor rod sealing structure, anchor rod and anchor rod injection molding method
  • Anchor rod sealing structure, anchor rod and anchor rod injection molding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] see Figure 1 to Figure 4 , the present invention provides a sealing structure for anchor rods, including a housing 21 fixedly connected to the rod body 1 of the anchor rod. Inside the housing 21, there is an inner cavity 22 penetrating through both ends. When the sealing structure is connected to the rod body 1 of the anchor rod , the inner cavity 22 communicates with the injection cavity 101 inside the rod body 1 of the anchor rod;

[0054] The interior of the inner cavity 22 is provided with two stepped structures that shrink the inner diameter in turn, and the two stepped structures are respectively formed as a first-level chamber 221 corresponding to the first-level sealing state, and a second-level chamber 222 corresponding to the second-level sealing state; the first-level cavity The inner diameter of the chamber 221 is greater than the inner diameter of the secondary chamber 222; when the sealing structure is used, one end of the shell 21 connected to the rod bo...

Embodiment 2

[0067] On the basis of Embodiment 1, the casing 21 includes a fixed casing 211 and a movable casing 212, and a primary chamber 221 is provided in the fixed casing 211;

[0068] The movable shell 212 is socketed inside the fixed shell 211, and the part of the movable shell 212 located in the fixed shell 211 is provided with a secondary chamber 222; the movable shell 212 is also provided with a liquid injection hole corresponding to the valve stem 233;

[0069] The movable shell 212 is sleeved inside the fixed shell 211 , and a gasket 3 is provided at the joint between the movable shell 212 and the fixed shell 211 .

[0070] The inner wall of the primary chamber 221 is provided with tight fine-pitched internal threads, and the part of the movable shell 212 inside the fixed shell 211 is provided with tight fine-pitched external threads, and the movable shell 212 and the fixed shell 211 are screwed together.

[0071] A connecting flange is provided on one side of the fixed shell 2...

Embodiment 3

[0074] refer to Figure 1-5 On the basis of the above-mentioned embodiments, this solution provides a kind of anchor rod, including the rod body 1 of the anchor rod, and the aforementioned anchor rod sealing structure 2, the discharge end of the sealing structure 2 is fixedly connected with the rod body 1 of the anchor rod; the rod body of the anchor rod 1. An injection cavity 101 is provided inside; the injection cavity 101 communicates with the inner cavity 22;

[0075] The rod wall of the rod body 1 of the anchor rod is a full-length expandable structure.

[0076] There is a groove on the wall of the rod body 1 of the anchor rod, and the long axis of the groove is parallel to the axis of the rod body 1; the groove is formed by one-time roll forming of a seamless steel pipe whose outer diameter is larger than the anchor hole diameter.

[0077] The injection chamber 101 corresponds to the groove as a special-shaped cavity.

[0078] There is one groove, and the wall of the r...

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Abstract

The invention discloses an anchor rod sealing structure, an anchor rod and an anchor rod injection molding method, and relates to the field of supporting equipment. According to the technical scheme, the anchor rod sealing structure comprises a shell fixedly connected with a rod body of the anchor rod, and an inner cavity penetrating through the two ends is formed in the shell; two step structures of which the inner diameters are sequentially reduced are arranged in the inner cavity, and the two step structures respectively form a first-stage chamber corresponding to a first-stage sealing state and a second-stage chamber corresponding to a second-stage sealing state; the inner diameter of the first-stage chamber is larger than that of the second-stage chamber; and a valve element is arranged in the inner cavity in a sliding mode, and the valve element moves in the axial direction of the inner cavity. The sealing structure has the beneficial effects that: the sealing structure adopts one-way self-locking and sealing design, can achieve first-stage sealing and second-stage sealing, guarantees that liquid in the rod body is sealed after liquid injection, and keeps the pressure in the rod body for a long time. The sealing structure can display the water pressure on the side face while primary and secondary sealing is conducted, and can provide effective reference for safety of an underground roadway.

Description

technical field [0001] The invention relates to the field of engineering support equipment, in particular to an anchor rod sealing structure, an anchor rod and an injection pressure method for the anchor rod. Background technique [0002] Bolt support is to change the mechanical state of the surrounding rock itself through the bolt inside the surrounding rock, and form an integral and stable rock belt around the roadway, and use the bolt and the surrounding rock to work together to achieve the purpose of maintaining the stability of the roadway. The mechanical effects of anchor rods mainly include suspension, composite beam, composite arch, span reduction, and reinforcement. If the bolt is used well, not only the support effect is good, but also the material is saved, the construction is simple, and it is also conducive to mechanized operation and fast construction speed. [0003] Therefore, in culverts, mines, subways and other construction roadways, a large number of bolt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/06F16K1/32F16K1/36F16K27/02F16K37/00E21D21/00
CPCF16K15/06F16K1/32F16K1/36F16K37/0008F16K27/0209E21D21/0026
Inventor 王运来王建锋谢新彭波苏飞孙明
Owner 山东鑫国矿业技术开发有限公司
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