CN216277873U - Accurate positioner in tunnel face big gun hole - Google Patents

Abstract

The utility model relates to the technical field of drilling and blasting construction in mountains, in particular to a precise positioning device for blastholes on a tunnel face. It includes a first working assembly and a second working assembly; the first working assembly includes a first cylindrical body, a light source and a glass sheet; the second working assembly includes a second cylindrical body, a spiral track and a convex lens. The utility model is easy to install and disassemble, and simple to operate. By rotating the convex lens, the object distance can be changed according to the specific tunnel conditions, and the size and clarity of the image can be adjusted. It is necessary to use experience to infer the distribution of individual blast holes, which effectively improves the accuracy and efficiency of hole layout.

Description

A kind of accurate positioning device for blast hole on tunnel face

technical field

The utility model relates to the technical field of drilling and blasting construction in mountains, in particular to a precise positioning device for blastholes on a tunnel face.

Background technique

During the excavation and blasting of the Dachangshanling Tunnel in China, the conventional method is used to locate the blasthole on the face face, which has the problem of random placement and large deviation of the blasthole. , and then the on-site workers will arrange the hole positions such as cutting holes and caving holes according to past experience. The blasting parameters in the design plan vary greatly, the blasting effect is poor, the reference rate is low, and the phenomenon of over and under excavation is serious. Therefore, in order to improve the accuracy and efficiency of hole placement, it is of great engineering significance to develop such a test device for accurate positioning of blast holes.

Utility model content

In view of the problems existing in the background technology, a precise positioning device for the blasthole on the tunnel face is proposed. The utility model is easy to install and disassemble, and simple to operate. By rotating the convex lens, the object distance can be changed according to the specific tunnel conditions, and the size and clarity of the image can be adjusted. It is necessary to use experience to infer the distribution of individual blast holes, which effectively improves the accuracy and efficiency of hole layout.

The utility model provides a precise positioning device for a blasthole on a tunnel face, which comprises a first working assembly and a second working assembly; the first working assembly includes a cylinder body 1, a light source and a glass sheet; the upper end of the cylinder body 1 is closed and the lower end is open; On the upper end of the first cylinder; the glass sheet is arranged at the lower end of the first cylinder; the second working assembly includes the second cylinder, a spiral track and a convex lens; the upper end of the second cylinder is provided with a through hole 1 opposite to the glass sheet, and the lower end is provided with a through hole 2. The spiral track is arranged on the inner wall of the second cylinder, between the first through hole and the second through hole; the convex lens is threadedly connected to the spiral track.

Preferably, a handle is provided on the outer wall of the second cylinder.

Preferably, the thickness of the first cylinder is smaller than that of the second cylinder.

Preferably, connecting parts are provided on the connecting surfaces of the first cylinder and the second cylinder.

Preferably, the glass sheet is connected with the opening of the lower end of the first cylinder body in a snap-fit connection.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model is convenient to install and disassemble, and simple to operate. By rotating the convex lens, the object distance can be changed according to the specific tunnel conditions, and the size and clarity of the image can be adjusted. It is necessary to use experience to infer the distribution of individual blast holes, which effectively improves the accuracy and efficiency of hole layout.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present utility model;

Reference numerals: 1, light source; 2, glass sheet; 3, handle; 4, spiral track; 5, working assembly two; 6, convex lens; 7, working assembly one.

Detailed ways

As shown in FIG. 1 , a device for precise positioning of the blasthole on the tunnel face proposed by the present utility model includes a working assembly 7 and a working assembly 2 5; the working assembly 7 includes a cylinder body 1, a light source 1 and a glass sheet 2; The upper end of the first cylinder is closed, and the lower end is open; the light source 1 is arranged at the upper end of the first cylinder; the glass sheet 2 is arranged at the lower end of the first cylinder; the second working assembly 5 includes the second cylinder, the spiral track 4 and the convex lens 6; A through hole 1 is arranged opposite to the glass sheet 2, and a second through hole is arranged at the lower end; the spiral track 4 is arranged on the inner wall of the cylinder 2, between the through hole 1 and the through hole 2; the convex lens 6 is screwed to the spiral track 4.

Further, a handle 3 is provided on the outer wall of the second cylinder.

Further, the thickness of the first cylinder is smaller than that of the second cylinder.

Further, connecting parts are provided on the connecting surfaces of the first cylinder and the second cylinder.

Further, the glass sheet 2 is connected with the opening of the lower end of the cylinder body 1 by engaging.

The working principle of the utility model is as follows: the position map of the blasthole of the tunnel face is prepared in advance. Paste the drawing on the side of the glass sheet 2 facing the cylinder 2. Connect and install the first and second cylinders. Turn on light source 1 and hold handle 3. Adjust the instrument so that the normal direction of the convex lens 6 is parallel to the normal direction of the face. Rotate the convex lens 6 to make it rotate on the spiral track 4, the convex lens 6 moves up and down, adjust the distance between the glass sheet 2 and the convex lens 6, that is, the object distance, so that the shot hole positioning diagram forms a clear image on the palm surface. The worker can trace the mark on the blast hole image on the face.

The embodiments of the present utility model are described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited thereto, within the scope of knowledge possessed by those skilled in the art, without departing from the purpose of the present utility model. make various changes.

Claims (5)

1. a precise positioning device for tunnel face blasthole, is characterized in that, comprises working assembly one (7) and working assembly two (5); Working assembly one (7) comprises cylinder body one, light source (1) and glass Sheet (2); the upper end of the first cylinder is closed, and the lower end is open; the light source (1) is arranged on the upper end of the first cylinder; the glass sheet (2) is arranged at the lower end of the first cylinder; A spiral track (4) and a convex lens (6); the upper end of the second cylindrical body is provided with a through hole 1 which is positioned opposite to the glass sheet (2), and the lower end is provided with a second through hole; the spiral track (4) is arranged on the inner wall of the second cylindrical body, It is located between the first through hole and the second through hole; the convex lens (6) is screwed to the spiral track (4). 2 . The precise positioning device for the blasthole on the tunnel face according to claim 1 , wherein a handle ( 3 ) is provided on the outer wall of the second cylinder. 3 . 3 . The precise positioning device for the blasthole of a tunnel face according to claim 1 , wherein the thickness of the first cylinder is smaller than the thickness of the second cylinder. 4 . 4 . The precise positioning device for the blasthole on the tunnel face according to claim 1 , wherein a connecting piece is provided on the connecting surfaces of the first cylinder and the second cylinder. 5 . 5 . The precise positioning device for a blasthole on a tunnel face according to claim 1 , wherein the glass sheet ( 2 ) is connected with the opening of the lower end of the cylinder body 1 in a snap-fit connection. 6 .

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