CN107829771A - A kind of adaptability extended type anchor pole - Google Patents

Abstract

The invention provides an adaptive elongated anchor rod, which includes an outer tube, the outer tube is a segmented structure, two adjacent sections of the outer tube are connected to each other, and an extension rod is built in the interface of the adjacent two sections of the outer tube, and the extension rod Elastic limiting protrusions are provided on the outer sides of the side walls at both ends, and protrusion limiting holes are correspondingly opened on the two adjacent sections of the outer tube at the interface. To solve the problem that the length of the existing bolts is fixed, and the length cannot be freely changed according to the usage conditions, which may easily cause the radius of the crushing area to exceed the length of the bolt, resulting in a sudden decrease in the support effect. The invention belongs to the technical field of engineering construction.

Description

An Adaptive Extended Anchor Rod

technical field

The invention provides a novel anchor rod, which belongs to the technical field of engineering construction.

technical background

With the development of society and economy, mineral resources are indispensable, and the increase in demand for resources has led to large-scale resource mining. In recent years, shallow resource mining has become increasingly exhausted, and resource mining has gradually entered the deep part, and the mining depth is increasing day by day. As a result, it is difficult to support the deep high-stress soft and broken roadway, which brings serious problems such as rockburst, roof fall, and chipping. As one of the deep support methods, bolt support plays a pivotal role. As the mining depth of the mine increases, the scope of the crushing zone of the surrounding rock in the underground also increases, which often causes the radius of the crushing zone to exceed the length of the bolt, resulting in a sharp drop in the support effect. Adaptive extension bolts of controlled length are necessary.

Contents of the invention

The purpose of the present invention is to provide an adaptive elongated bolt to solve the problem that the length of the existing bolt is fixed and cannot be freely changed according to the use situation, which may easily cause the radius of the crushing area to exceed the length of the bolt, resulting in support The problem of diminished effectiveness.

In order to solve the above problems, it is planned to adopt such an adaptive lengthened anchor rod, including the outer tube, the outer tube is a segmented structure, two adjacent sections of the outer tube are connected, and the interface between the adjacent two sections of the outer tube is built with a The extension rod is provided with elastic limiting protrusions on the outer sides of the side walls at both ends of the extension rod, and the two adjacent sections of the outer tube at the interface are also correspondingly provided with protrusion limiting holes.

In the above-mentioned anchor rod, four elastic limit protrusions are arranged at equal intervals along the circumferential direction at both ends of the extension rod, and four elastic limit protrusions are arranged at equal intervals along the circumference direction at the interface of the corresponding outer tube at both ends of the extension rod. Raised limit hole;

In the aforementioned anchor rod, one end of the outer tube is provided with an elastic plug, and a nut is screwed on the outer tube outside the elastic plug;

In the aforementioned anchor rod, the outer tube is formed by butt joints of at least three sections in sequence;

Among the aforementioned anchor rods, in the two adjacent sections of outer tubes, the end of one outer tube at the interface between the two is provided with an internal thread, and the end of the other outer tube is provided with a matching internal thread. detachably connected.

Compared with the prior art, the present invention designs the anchor rod as a segmented structure, and each node can be freely lengthened by an extension rod, so that the length of the anchor rod can be adjusted according to the use requirements, which is convenient for transportation and use. The structure is simple, the use is convenient, the cost is low, the use effect is good, and it is suitable for popularization and use.

Description of drawings

Fig. 1 is the front view structure schematic diagram (unextended state) of the present invention;

Fig. 2 is a schematic structural view of two adjacent sections of the outer tube in Fig. 1 when they are lengthened by an extension rod;

Fig. 3 is a schematic cross-sectional view of the interface between two adjacent sections of outer pipes in Fig. 1 .

Detailed ways

In order to express the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Example:

Referring to Fig. 1 to Fig. 3, an adaptive elongated bolt provided in this embodiment includes an outer tube 1, the outer tube 1 is a segmented structure, and the outer tube 1 is formed by butt joints of at least three sections in sequence, and two adjacent sections Sections of outer tube 1 are connected, and an extension rod 2 is built into the interface between two adjacent sections of outer tube 1. The diameter of extension rod 2 is slightly smaller than the inner diameter of outer tube 1, and the two ends of extension rod 2 extend to the adjacent two sections respectively. Inside the outer tube 1, the outer sides of the side walls at both ends of the extension rod 2 are provided with elastic limit protrusions 3, the elastic limit protrusions 3 are made of elastic materials, or a small spring is arranged between the extension rod 2, and the The adjacent two sections of the outer tube 1 at the interface are also provided with a corresponding protrusion limit hole 4, the elastic limit protrusion 3 is a circular bump, and the diameter of the elastic limit protrusion 3 is slightly smaller than the protrusion limit hole 4 The two ends of the extension rod 2 are equidistantly distributed along the circumferential direction with four elastic stop protrusions 3, and the interface of the outer tube 1 corresponding to the two ends of the extension rod 2 is also equally spaced along the circumferential direction. Four raised limit holes 4, one end of the outer tube 1 is provided with an elastic plug 5, the outer tube 1 on the outer side of the elastic plug 5 is screwed with a nut, and in the two adjacent sections of the outer tube 1, one of the two joints The end of the outer tube 1 is provided with an internal thread 6 , and the end of the other outer tube 1 is provided with a matching internal thread, and the two are detachably connected by the thread.

working principle:

When the length of the anchor rod is short when not in use or in use, the joints of the outer pipe 1 can be threaded to connect two adjacent outer pipes 1 together. If the length of the anchor rod is not enough during use, you can choose Select the nodes selectively, rotate the two outer tubes 1 at one or more interfaces relative to each other, so as to release the threaded connection and separate the adjacent outer tubes 1, pull the adjacent two outer tubes 1 relatively outward, and make the extension rod 2 The elastic limit protrusions 3 at both ends are clamped in the protrusion limit holes 4 of the two sections of the outer tube 1, so that the connection structure of the outer tube 1-extension rod 2-outer tube 1 is stable, that is, the lengthening of the anchor rod is realized. Select the number of extended nodes according to the need to meet the actual demand for the length of the anchor rod.

Claims (5)

1. A kind of 1. adaptability extended type anchor pole, it is characterised in that：Including outer tube (1), outer tube (1) is segmentation structure, adjacent two Section outer tube (1) is relative to be connect, and the interface of adjacent two sections of outer tubes (1) is built-in with extension bar (2), extension bar (2) both ends side wall Outside is provided with elastic spacing projection (3), is also corresponded on adjacent two sections of outer tubes (1) of the interface and offers raised spacing hole (4)。
2. A kind of 2. adaptability extended type anchor pole according to claim 1, it is characterised in that：The both ends of extension bar (2) are respectively along circle Circumferential direction equidistantly distributed is provided with four elastic spacing projections (3), and the interface of outer tube (1) corresponding to extension bar (2) both ends Place along the circumferential direction also equally spacedly offers four raised spacing holes (4).
3. A kind of 3. adaptability extended type anchor pole according to claim 1, it is characterised in that：One end of outer tube (1) is arranged with pine It is tight to fill in (5), it is installed with nut on the outer tube (1) on the outside of elastic plug (5).
4. A kind of 4. adaptability extended type anchor pole according to claim 1, it is characterised in that：Outer tube (1) by least three sections successively Docking forms.
5. A kind of 5. adaptability extended type anchor pole according to claim 1, it is characterised in that：In adjacent two sections of outer tubes (1), the two The end set of one outer tube (1) of interface has internal thread (6), and the end set of another outer tube (1) has matched Internal thread, the two is detachably connected by screw thread.