Precise and simple height difference measuring instrument for underground coal mine

Abstract

The utility model discloses a coal mine underground accurate simple height difference measuring instrument, which comprises a laser orientation instrument, a box staff, a circular level and a connecting buckle, the laser orientation instrument is vertically connected to a staff body of the box staff through the connecting buckle, and the connecting buckle can be clamped and fixed at any height position of the box staff. And the connecting buckle is used for fixing the circular level above the clamped laser orientation instrument. The measuring instrument is simple in equipment and easy to carry, does not occupy a large amount of manpower and material resources, improves a traditional measuring mode, meets the construction requirement for measuring result precision, and plays a certain reference and innovation role in the later measuring field.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine surveying engineering, and particularly relates to a precise and simple height difference measuring instrument for coal mine underground. Background Art

[0002] Mine surveying work involves both the ground and coal mine underground. It not only serves the mine production and construction, but also provides basic data for the safe production in the coal mine underground, so as to make important decisions on safe production. Any data error in coal mine surveying engineering may lead to serious accidents. Therefore, mine surveying has great responsibilities and functions in mine exploitation.

[0003] During the mine surveying and mapping process, it is often necessary to calibrate the waist line (gradient), verify the elevation, drop in the roadway driving process, and draw data such as coal seam and roadway profiles. In the past, it was necessary to carry a level instrument or a total station instrument and cooperate with equipment such as tripod legs. The equipment is large, has many components, is heavy, and requires a lot of construction personnel. At least four people are needed to carry or transport it over a long distance. The surveying and mapping process is relatively complicated and clumsy, the measurement takes a long time, about 40 minutes, which is time-consuming and laborious. Content of the Utility Model

[0004] The purpose of the utility model is to provide a precise and simple height difference measuring instrument for coal mine underground, which can achieve surveying and mapping results that meet the requirements. Compared with traditional measuring instruments and methods, it requires fewer personnel and is more labor-saving and time-saving.

[0005] The utility model is realized by adopting the following technical scheme: a precise and simple height difference measuring instrument for coal mine underground, which includes a laser pointer, a tower rod, a circular spirit level, and a connecting buckle. The laser pointer is vertically connected to the rod body of the tower rod through the connecting buckle. The connecting buckle can be clamped and fixed at any height position of the tower rod, and a circular spirit level is fixed above the connecting buckle for clamping the laser pointer.

[0006] Further, the connecting buckle includes a large U-shaped buckle for clamping the tower rod and a small U-shaped buckle for clamping the laser pointer. A stud is screwed on the side plate of the large U-shaped buckle and abuts against the tower rod to fix the tower rod, and a circular spirit level is arranged on the small U-shaped buckle.

[0007] Further, the bottom plate of the large U-shaped buckle is fixedly connected to the bottom plate of the small U-shaped buckle.

[0008] Further, the large U-shaped buckle is connected to the small U-shaped buckle through a connecting piece. One end of the connecting piece is connected to the bottom plate of the small U-shaped buckle, and the other end is connected to the bottom plate of the large U-shaped buckle.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The utility model utilizes the principle of the straight-line propagation of light and the cooperation with a spirit level bubble to maintain horizontal, and can solve some simple elevation difference measurement problems by providing a horizontal light ray. Compared with the previous measurement technology, the weight of the equipment components is about 25 Kg and it requires 4 - 5 people to carry or move; while the weight of the equipment components of this new type of measuring instrument is only 0.7 Kg and 1 - 2 people can complete the carrying;

[0011] 2. By using this measuring instrument, the measurement operation process is more simple and clear. The workload that previously required 4 - 5 people can now be operated by only 1 - 2 people;

[0012] 3. The previous measurement technology took 40 minutes to complete, while after using this measuring instrument, it only takes 5 - 10 minutes to complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a schematic structural diagram of the connection buckle of the utility model;

[0015] Figure 3 is a schematic structural diagram of the connection buckle of another structural form of the utility model;

[0016] Figure 4 is a schematic diagram of calibrating the daily waistline using a traditional instrument;

[0017] Figure 5 is a schematic diagram of calibrating the daily waistline using the utility model;

[0018] Figure 6 is a schematic diagram of measuring the elevation of any point on the working face using a traditional instrument;

[0019] Figure 7 is a schematic diagram of measuring the elevation of any point on the working face using the utility model;

[0020] Figure 8 is a schematic diagram of measuring the roadway section using a traditional instrument;

[0021] Figure 9 is a schematic diagram of measuring the roadway section using the utility model.

[0022] In the figure: 1. Laser pointer; 2. Tower ruler; 3. Circular spirit level; 4. Connection buckle; 41. U-shaped large buckle; 42. U-shaped small buckle; 43. Connector. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0023] In order to better understand the purpose, structure, and function of the utility model, the following further describes in detail a precise and simple elevation difference measuring instrument for coal mines underground in combination with the accompanying drawings.

[0024] As shown Figure 1 in the figure, a precise and simple height difference measuring instrument for underground coal mines includes a laser pointer 1, a leveling rod 2, a circular spirit level 3 and a connecting buckle 4. The laser pointer 1 is vertically connected to the rod body of the leveling rod 2 through the connecting buckle 4. The connecting buckle 4 can be clamped and fixed at any height position of the leveling rod 2. The circular spirit level 3 is fixed above the connecting buckle 4 that clamps the laser pointer 1.

[0025] In this embodiment, the model of the laser pointer 1 is YHJ800 and it is used after charging. The specification of the leveling rod 2 is a 3 - 5m aluminum alloy double - sided telescopic standard ruler, and the circular spirit level 3 is a micro circular spirit bubble. As shown Figure 2 in the figure, the connecting buckle 4 includes a large U - shaped buckle 41 and a small U - shaped buckle 42 made of 3mm - thick iron sheet according to the width of the leveling rod 2 and the diameter of the laser pointer 1. The large U - shaped buckle 41 fixes the leveling rod 2, and the small U - shaped buckle 42 fixes the laser pointer 1. A rotating screw for fixing the leveling rod 2 is constructed on the side plate of the large U - shaped buckle 41. The circular spirit level 3 is installed on the small U - shaped buckle 42. The bottom plate of the small U - shaped buckle 42 is connected to the bottom plate of the large U - shaped buckle 41 by a connecting piece 43 made of the same iron sheet. As shown Figure 3 in the figure, the bottom plate of the small U - shaped buckle 42 can also be directly welded and fixed to the bottom plate of the large U - shaped buckle 41.

[0026] For the precise and simple height difference measuring instrument for underground coal mines of the present utility model, the laser pointer 1 uses a light source for pointing and positioning guidance, the leveling rod 2 is used to measure the height difference (drop), the circular spirit level 3 is used to keep the leveling rod 2 and the laser horizontal and vertical, and the connecting buckle 4 is used to combine the laser pointer 1, the leveling rod 2 and the circular spirit level 3 together to achieve the measurement function.

[0027] During use, install the circular spirit level 3 on the upper side plate of the small U - shaped buckle 42. The small U - shaped buckle 42 is fixed to the laser pointer 1. Fix the large U - shaped buckle 41 at a certain scale of the leveling rod 2 and connect it to the small U - shaped buckle 42. Turn the rotating screw to fix it. Connect the laser, turn on the laser switch, and during the operation, keep the spirit bubble in the middle position of the circular spirit level 3 and read the reading of the light spot on the leveling rod 2.

[0028] As shown Figure 4 and Figure 5 in the figure, during the daily calibration of the waist - line data, a comparison of the measurement methods between the traditional instrument and this measuring instrument. The drop between two waist - line points 1 and 2 is: slope × 0.0173 × horizontal distance. If the designed slope is 10° and the horizontal distance is 2 meters, then the drop is 10 × 0.0173 × 2 = 0.346m.

[0029] The operation method of the traditional instrument: Set up the instrument tripod, level it to zero, measure the readings of h2 and h1 respectively, then the drop between the two points is: reading of h2 - reading of h1 = about 0.346m is qualified.

[0030] Operation method of this measuring instrument: After the bubble in the circular spirit level 3 is centered, make the laser indicator horizontally pass through the waistline point 1, keep it horizontal, directly measure the reading of the waistline point 2, and it can be directly determined whether the waistline is correct by whether the reading value is 0.346 m.

[0031] Such as Figure 6 and Figure 7 shown, comparison of the operation methods for the elevation of any point on the measurement working surface.

[0032] Operation method of the traditional instrument: First, hang the target under the traverse point, measure the position H1 from the target to the traverse point, measure the target elevation difference h1 using the total station, then place the target under the station position, measure the position H2 from the target to the measurement point, and measure the target elevation difference h2 using the total station. The station elevation is: H measurement = H traverse - H1 + h1 + h2 - H2.

[0033] Operation method of this measuring instrument: Provide a horizontal laser, and respectively measure the drops H1 and H2 of the traverse point, measurement point and the laser. The station elevation is: H measurement = H traverse - H1 - H2.

[0034] Such as Figure 8 and Figure 9 shown, comparison of the operation methods for measuring the roadway profile.

[0035] Operation method of the traditional instrument: To measure the roadway profile, it is necessary to complete the measurement by cooperating with a total station, a tripod and a prism. Stations need to be set at the undulating changes of the roadway, and there are many instrument setups, and the operation is cumbersome.

[0036] Operation method of this measuring instrument: Erect this measuring instrument at a certain place in the roadway, provide a horizontal laser, and measure the reading of the leveling rod at each fixed distance.

[0037] In summary, this measuring instrument has simple equipment, is easy to carry, does not occupy a large amount of manpower and material resources, improves the traditional measurement mode, and the accuracy of the measurement results meets the construction requirements, playing a certain role in reference and innovation in the future measurement field.

[0038] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations 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 precise and simple height difference measuring instrument for underground coal mines, characterized in that, It includes a laser pointer (1), a leveling staff (2), a circular spirit level (3) and a connecting buckle (4). The laser pointer (1) is vertically connected to the body of the leveling staff (2) through the connecting buckle (4). The connecting buckle (4) can be clamped and fixed at any height position of the leveling staff (2). The circular spirit level (3) is fixed above the connecting buckle (4) that clamps the laser pointer (1).

2. The precise and simple underground coal mine height difference measuring instrument according to claim 1, characterized in that The connecting buckle (4) includes a large U-shaped buckle (41) for clamping the leveling staff (2) and a small U-shaped buckle (42) for clamping the laser pointer (1). A stud screwed on the side plate of the large U-shaped buckle (41) abuts against the leveling staff (2) to fix the leveling staff (2). The circular spirit level (3) is arranged on the small U-shaped buckle (42).

3. The precise and simple underground coal mine height difference measuring instrument according to claim 2, wherein The bottom plate of the large U-shaped buckle (41) is fixedly connected to the bottom plate of the small U-shaped buckle (42).

4. The precise and simple underground coal mine height difference measuring instrument according to claim 2, wherein The large U-shaped buckle (41) is connected to the small U-shaped buckle (42) through a connecting piece (43). One end of the connecting piece (43) is connected to the bottom plate of the small U-shaped buckle (42), and the other end is connected to the bottom plate of the large U-shaped buckle (41).

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