Assembly with constant-resistance body and constant-resistance sleeve and NPR anchor rod/cable

A resistance body and casing technology, applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc., can solve the problems of constant resistance increase, NPR bolt/cable failure and damage, and achieve the effect of reducing iron filings

Pending Publication Date: 2020-11-06
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a constant resistance body, constant resistance casing assembly and NPR anchor/cable, to solve

Method used

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  • Assembly with constant-resistance body and constant-resistance sleeve and NPR anchor rod/cable
  • Assembly with constant-resistance body and constant-resistance sleeve and NPR anchor rod/cable
  • Assembly with constant-resistance body and constant-resistance sleeve and NPR anchor rod/cable

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Embodiment Construction

[0043] The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0044] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, for example, it can be fi...

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Abstract

The invention provides an assembly with a constant-resistance body and a constant-resistance sleeve and an NPR anchor rod/cable. The assembly with the constant-resistance body and the constant-resistance sleeve comprises the constant-resistance body, and the constant-resistance sleeve, wherein the constant-resistance body is in a circular truncated cone shape, and the constant-resistance body is provided with a large diameter end and a small diameter end; the constant resistance body is arranged inside the constant resistance sleeve; the radial size of the large diameter end of the constant-resistance body is larger than the inner diameter of the constant-resistance sleeve, and the radial size of the small diameter end of the constant-resistance body is less than the inner diameter of theconstant-resistance sleeve; and grooves are formed in the edge of the end surface of the large diameter end of the constant-resistance body. In the sliding stage, scrap iron originally generated and accumulated at the front end of the constant-resistance body can be gradually discharged through the grooves in the forward sliding process of the constant-resistance body and cannot be accumulated atthe front end of the constant-resistance body any more to hinder sliding movement of the constant-resistance body, the constant constant-resistance value of the NPR anchor rod/cable in the working process is guaranteed, and the important practical significance is achieved for deformation control of the engineering rock mass.

Description

technical field [0001] The invention relates to the technical field of NPR anchor rods / cables, in particular to a constant resistance body and constant resistance casing assembly and an NPR anchor rod / cable. Background technique [0002] In order to meet the needs of high-efficiency and safe mining of high slopes in deep and open-pit mines, especially to meet the needs of control and prediction of disasters such as high-stress rock bursts, rock bursts, landslides, and large deformations of soft rocks, the existing technology has developed An NPR anchor cable / rod with high energy absorption, high constant resistance, and negative Poisson's ratio. [0003] NPR anchor cable / rod is the collective name of NPR series products. Common NPR anchor cables / rods include NPR anchor cable and NPR anchor rod. Take NPR anchor rod as an example to illustrate: figure 1 with image 3 As shown, the NPR anchor rod includes a constant resistance casing 2, a cone 7, a rod body, a tray and a fast...

Claims

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Application Information

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IPC IPC(8): E21D21/00
CPCE21D21/0026E21D21/0033E21D21/004E21D21/006
Inventor 陶志刚徐浩田郭爱鹏罗森林何满潮
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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