Suspension type prism for mine underground measurement

Abstract

The utility model discloses a suspension type prism for mine underground measurement, and aims to solve the technical problems that the conventional prism used for mine underground measurement is greatly influenced by the structure and the external environment, the contingency is large, measurement stations cannot be kept in the same measurement state, and data measured by each measurement station has certain difference. The utility model relates to a hanging prism for mine underground measurement, which comprises a triangular prism, a cylindrical metal hanging wire top support, a conical ejector pin and cutting boards, the side edges of the three cutting boards are mutually spliced, the triangular prism is arranged in the center of the cutting boards, the cylindrical metal hanging wire top support is arranged at the top of the cutting boards, and the conical ejector pin is arranged at the bottom of the cutting boards. A threading hole is formed in the side face of the top of the cylindrical metal hanging wire top support, a hanging wire hole is formed in the end face of the top of the cylindrical metal hanging wire top support, a splicing line between the cylindrical metal hanging wire top support and the cutting board, the prism center of the triangular prism and the conical ejector pin are coaxial, and the cutting board is simple in structure, ingenious and reasonable in design, easy and convenient to operate, low in cost, high in practicability and worthy of popularization.

Description

Technical Field

[0001] The utility model relates to a tool for underground mines, in particular to a suspended prism for underground mine measurement. Background Art

[0002] There are relatively large differences between underground mining measurements and traditional ground measurements. The first is the difference in the locations of control points. Due to the complexity of the underground working environment, control points are generally arranged on the roof of the tunnel, and the upper centering method is adopted during the observation process. The control points of ground measurements are all arranged on the ground, and the conventional centering and leveling method is used for measurement.

[0003] In actual operation, underground measurement often uses the method of hanging prisms for rear-view measurement. There are many different methods for the specific details of hanging prisms, and the measured data results are also quite different. At present, the method of hanging prisms is generally used for measurement in mining production. The main reason is that the method of hanging prisms can greatly reduce the labor intensity of surveyors, is easy to operate, and shortens the time of surveyors working underground. There are also different methods for hanging prisms in the specific measurement process. For example, the prism support is tilted backward to keep the prism balanced as a whole, and the center of the prism and the center of the measuring point are visually on the same plumb line. When using this method for measurement, the traditional prism will be greatly affected by its own structure and the external environment. The method is relatively accidental, and it is impossible to maintain the same measurement state between each measuring station. There are certain differences in the data measured by each measuring station. Summary of the invention

[0004] The use of conventional prisms for underground mine measurements will be greatly affected by their own structure and the external environment, and will be more random. It is impossible to maintain the same measurement state between each measuring station, and there are certain technical problems such as differences in the data measured at each measuring station.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a suspended prism for underground mine measurement, including a triangular prism, a cylindrical metal hanging wire support, a conical thimble, and an anvil, the sides of the three anvils are spliced ​​with each other, a triangular prism is arranged in the center of the anvil, a cylindrical metal hanging wire support is arranged on the top of the anvil, a conical thimble is arranged on the bottom of the anvil, a threading hole is arranged on the side surface of the top of the cylindrical metal hanging wire support, a hanging wire hole is arranged on the top end face of the cylindrical metal hanging wire support, and the splicing line between the cylindrical metal hanging wire support and the anvil, the center of the triangular prism and the conical thimble are coaxial.

[0006] Each cutting board is provided with horizontal angle aiming reflective marks on the upper and lower parts, and the direction of the marks points to the triangular prism.

[0007] A vertical angle aiming reflective mark is arranged on the outer side of each cutting board, and its direction points to the triangular prism.

[0008] The angle between the three anvils is 120°, and the three edges of the triangular prism overlap with the three anvils respectively.

[0009] The utility model has the following advantages:

[0010] 1. Simple structure, reasonable design, and easy processing and manufacturing.

[0011] 2. Low cost, easy operation, and can be observed from multiple angles.

[0012] 3. Easy to use, no need for centering or leveling, which improves work efficiency.

[0013] 4. It can improve the reliability of measurement results and ensure the quality of measurement data.

[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and implementation plans. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of the structure of the utility model;

[0016] Explanation of the reference numerals: 1 - hanging wire hole; 2 - horizontal angle aiming reflective mark; 3 - conical thimble; 4 - anvil; 5 - triangular prism; 6 - vertical angle aiming reflective mark; 7 - threading hole; 8 - cylindrical metal hanging wire support. DETAILED DESCRIPTION

[0017] like Figure 1 As shown, the utility model is a suspended prism for underground measurement in mines, comprising a triangular prism 5, a cylindrical metal hanging wire support 8, a conical thimble 3, and an anvil 4. The sides of the three anvils 4 are spliced ​​with each other, a triangular prism 5 is arranged in the center of the anvil 4, a cylindrical metal hanging wire support 8 is arranged on the top of the anvil 4, a conical thimble 3 is arranged on the bottom of the anvil 4, a threading hole 7 is arranged on the side surface of the top of the cylindrical metal hanging wire support 8, a hanging wire hole 1 is arranged on the top end face of the cylindrical metal hanging wire support 8, and the splicing line between the cylindrical metal hanging wire support 8 and the anvil 4, the center of the triangular prism 5 and the conical thimble 3 are coaxial.

[0018] Each of the anvil boards 4 is provided with horizontal angle aiming reflective marks 2 above and below, and the direction thereof points to the triangular prism 5 .

[0019] A vertical angle aiming reflective mark 6 is disposed on the outer side of each anvil board 4 , and its direction points to the triangular prism 5 .

[0020] The angle between the three anvils 4 is 120°, and the three edges of the triangular prism 5 overlap with the three anvils 4 respectively.

[0021] During underground measurement in a mine, the surveyor connects the wire on the cylindrical metal wire hanging support 8 directly to the wire on the control point, and suspends the prism freely in the air. There is no need to adjust the direction of the prism by hand. If necessary, the prism can be stabilized. Then the measurement and aiming can be carried out.

[0022] The utility model comprises three cutting boards 4 which are spliced ​​together, the angle between each cutting board 4 is 120 degrees, a triangular prism 5 is installed at the core part, each cutting board 4 is marked with a vertical angle aiming reflective triangle mark 6 and a horizontal angle aiming reflective mark 2, a cylindrical steel hanging wire device 8 is arranged on the top, the device comprises a threading hole 7, a hanging wire hole 1, and a conical ejector pin 3 with a downward pointing function is arranged at the lower end, wherein the cylindrical metal hanging wire support 8 and the cutting board 4 splicing line, the center of the triangular prism 5 and the downward pointing conical ejector pin 3 are all on the same axis.

[0023] The principle of the utility model is as follows: a cotton thread is passed through the threading hole 7 and then passed out from the hanging hole 1, a knot is tied at the end of the thread rope, and then connected with the control point thread rope to achieve the purpose of suspension. Regardless of whether the prism body is in a stationary or rotating state, its central axis remains unchanged, and it can be observed at any angle at any time without human assistance. In addition, this three-leaf fan-shaped shape has good stability, can reduce the impact of the external environment, and ensures that the central axis of the prism and the control point are on the same vertical line to the greatest extent. A lower counterpoint conical thimble 3 is installed at the lower end to replace the hammer ball.

[0024] The utility model is a special suspended prism for underground mine measurement. The prism can be directly suspended on the rope of the upper control point without human assistance. It can be measured at various angles. The stability of the prism itself is also relatively good, and the coaxiality with the control point can be guaranteed. With it, surveyors can measure conveniently and quickly in underground mine measurement, which can improve measurement efficiency and has strong practicality.

Claims

1. A suspended prism for underground mine measurement, comprising a triangular prism (5), characterized in that: It also comprises a cylindrical metal hanging wire support (8), a conical thimble (3), and an anvil (4), wherein the sides of the three anvils (4) are spliced ​​together, a triangular prism (5) is provided at the center of the anvil (4), a cylindrical metal hanging wire support (8) is provided at the top of the anvil (4), a conical thimble (3) is provided at the bottom of the anvil (4), a threading hole (7) is provided on the top side of the cylindrical metal hanging wire support (8), and a hanging wire hole (1) is provided on the top end surface of the cylindrical metal hanging wire support (8), and the splicing line between the cylindrical metal hanging wire support (8) and the anvil (4), the center of the triangular prism (5) and the conical thimble (3) are coaxial.

2. A suspended prism for underground mine measurement as claimed in claim 1, characterized in that: Each of the chopping boards (4) is provided with horizontal angle aiming reflective marks (2) at the top and bottom, the direction of which points to the triangular prism (5).

3. A suspended prism for underground mine measurement as claimed in claim 1, characterized in that: Each anvil board (4) is provided with a vertical angle aiming reflective mark (6) on the outside, the direction of which points to the triangular prism (5).

4. A suspended prism for underground mine measurement as claimed in claim 1, characterized in that: The angle between the three anvils (4) is 120°, and the three edges of the triangular prism (5) overlap with the three anvils (4) respectively.

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