Telescopic roadway roof gradient measuring instrument

Abstract

The utility model discloses a telescopic roadway roof gradient measuring instrument which comprises a protractor, a plumb bob, a rope, a telescopic rod and a connecting buckle, one end of the rope is fixed at the circle center of the protractor, the other end of the rope is connected with the plumb bob and is perpendicular to the arc-shaped outer side of the protractor, and the straight edge side of the protractor is parallel to a rod body of the telescopic rod. And the connecting buckle is fixedly connected with the telescopic rod. According to the utility model, the gradient measurement process is simpler, clearer and more accurate, the measurement result meeting the requirement can be obtained, and compared with the traditional measurement instrument and method, the precision is high, the operation is simple, and the measurement distance is long. Only one point can be measured in the past, at present, random measurement can be conducted according to the length of the telescopic rod, carrying is convenient, a traditional measurement mode is improved, and certain reference and innovation effects are achieved in the later measurement field.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine geological survey, and particularly relates to a retractable roadway roof slope measuring instrument. Background Technique

[0002] Mine geological survey work involves both the ground and underground coal mines. It not only serves for mine production and construction, but also provides basic data for underground coal mine safety production to make important decisions on safety production. With the extension of Chengzhuang Mine to the west and deep part, the rapid change of coal seam occurrence conditions has led to large changes in coal seam dip angles and concentrated development of geological structures. When the coal seam dip angle changes, underground workers need to measure the slope of the working face at any time. Traditional methods use compasses or slope meters, but they can only measure the slope of one point underground and cannot measure the slope of local area roadways. Moreover, the accuracy of slope meters is low, and compasses are greatly interfered, which cannot meet the production needs of the mine. Content of the Utility Model

[0003] The utility model provides a retractable roadway roof slope measuring instrument to solve the technical problems of single measuring point of the existing slope measuring instrument, which can only measure one point each time, with poor accuracy of surveying and mapping results and strong interference.

[0004] The utility model is realized by adopting the following technical scheme: A retractable roadway roof slope measuring instrument includes a protractor, a plumb bob, a cord, a telescopic rod and a connecting buckle. One end of the cord is fixed at the center of the protractor, and the other end of the cord is connected to the plumb bob and hangs perpendicular to the outer arc of the protractor. The straight side of the protractor is parallel to the rod body of the telescopic rod and is connected and fixed to the telescopic rod through the connecting buckle.

[0005] Further, the connecting buckle includes a connecting piece at the lower part and a hook at the upper part. The connecting piece is fixedly connected to the protractor through a fastener, and the hook is hung on the rod body of the telescopic rod.

[0006] Further, the connecting buckles are arranged on both sides of the right-angle side of the protractor, and the hanging directions of the hooks of the connecting buckles on both sides are opposite.

[0007] Further, the telescopic rod is a metal rod.

[0008] Further, the middle scale of the protractor is the zero scale, and the scale values increase in both side directions.

[0009] The utility model has the following beneficial effects compared with the prior art:

[0010] The retractable roadway roof slope measuring instrument of the utility model makes the slope measurement process simpler, clearer and more accurate, and can obtain measurement results that meet the requirements. Compared with traditional measurement instruments and methods, it has high precision, simple operation and long measurement distance. In the past, only one point could be measured. Now, according to the length of the telescopic rod, it can be measured arbitrarily, and it is convenient to carry. It has improved the traditional measurement mode and played a certain role in reference and innovation in the future measurement field. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the utility model.

[0012] In the figure: 1, protractor; 2, plumb bob; 3, wire rope; 4, telescopic rod; 5, connecting buckle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] In order to better understand the purpose, structure and function of the utility model, the following further describes in detail a retractable roadway roof slope measuring instrument of the utility model with reference to the drawings.

[0014] As Figure 1 shown, a retractable roadway roof slope measuring instrument includes a protractor 1, a plumb bob 2, a wire rope 3, a telescopic rod 4 and a connecting buckle 5. One end of the wire rope 3 is fixed at the center of the protractor 1, and the other end of the wire rope 3 is connected to the plumb bob 2 and hangs perpendicular to the outer arc of the protractor 1. The straight side of the protractor 1 is parallel to the rod body of the telescopic rod 4 and is connected and fixed to the telescopic rod 4 through the connecting buckle 5.

[0015] In this embodiment, the connecting buckle 5 is mainly used to combine the protractor 1, the plumb bob 2 and the telescopic rod 4 to realize the measurement function. The connecting buckle 5 is made of 3-mm-thick iron sheet and includes a connecting piece at the lower part and a hook at the upper part. The connecting piece is fixedly connected to the protractor 1 through a fastener. The hook is bent according to the diameter of the telescopic rod 4 and hangs on the rod body of the telescopic rod 4. The connecting buckle 5 is arranged on both sides of the right-angled side of the protractor 1, and the hanging directions of the hooks of the connecting buckles 5 on both sides are opposite.

[0016] The middle scale of the protractor 1 is the zero scale, and the scale value increases in both side directions. The telescopic rod 4 is a telescopic metal rod. The plumb bob 2 hangs vertically downward. The rod body of the telescopic rod 4 is close to the roadway roof. Reading the degree of the wire rope 3 on the protractor 1 is the slope of the roadway.

[0017] When in use, connect the plumb bob 2 and the protractor 1 with the wire rope 3, then fix them with the connecting buckle 5 and the telescopic rod 4, and fix the telescopic rod 4 close to the roadway roof, and the slope of the roadway in different areas can be quickly measured.

[0018] It is understood that the present utility model is described by means of some embodiments. Those skilled in the art will be aware that, without departing from the spirit and scope of the present utility model, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A retractable roadway roof gradient measuring instrument, characterized in that It includes a protractor (1), a plumb bob (2), a cord (3), a telescopic rod (4) and a connecting buckle (5). One end of the cord (3) is fixed at the center of the protractor (1), and the other end of the cord (3) is connected to the plumb bob (2) which hangs perpendicular to the outer arc of the protractor (1). The straight side of the protractor (1) is parallel to the rod body of the telescopic rod (4) and is fixedly connected to the telescopic rod (4) through the connecting buckle (5).

2. The retractable roadway roof slope measuring instrument according to claim 1, wherein The connecting buckle (5) includes a connecting piece at the lower part and a hook at the upper part. The connecting piece is fixedly connected to the protractor (1) through a fastener, and the hook is hung on the rod body of the telescopic rod (4).

3. The retractable roadway roof gradient measuring instrument according to claim 2, wherein The connecting buckles (5) are arranged on both sides of the right-angle side of the protractor (1), and the hanging directions of the hooks of the connecting buckles on both sides are opposite.

4. The retractable roadway roof gradient measuring instrument according to claim 1, characterized in that, The telescopic rod (4) is a metal rod.

5. The retractable roadway roof gradient measuring instrument according to any one of claims 1 to 4, characterized in that, The middle scale of the protractor (1) is the zero scale, and the scale values increase in both side directions.

Images