Fixing device for measuring point of total station in roadway with high wind speed

Abstract

The invention discloses a fixing device for measuring points of a total station in a roadway with high wind speed, which comprises a roadway top fixing pipe, a rope fixing column and a suspension rope, the upper end of the suspension rope sequentially penetrates through a penetrating hole and a groove of the rope fixing column and then is bound, and a plumb bob is suspended at the lower end of the suspension rope. The plumb bob is arranged close to the center of the roadway, and the total station is placed under the plumb bob; the wind shielding shell is of a big-end-down cylindrical structure, the upper end of the wind shielding shell sleeves and is fixed to the lower end of the rope fixing column, and the lower end of the wind shielding shell extends downwards and completely surrounds the suspension rope and the plumb bob, so that the suspension rope and the plumb bob are prevented from swinging in a roadway with high wind speed, and errors of a measuring point of the total station due to position change of the plumb bob are avoided; by arranging the wind shielding shell, the plumb bob and the suspension rope are completely surrounded, the situation that the measuring point of the total station deviates due to swinging of the plumb bob in a roadway with the high wind speed is avoided, and then the roadway is guaranteed to be communicated.

Description

Technical Field

[0001] The present invention belongs to the field of total stations in coal mines, and particularly relates to a fixing device for total station measuring points in roadways with high wind speeds. Background Technique

[0002] A total station is a high-tech measuring instrument integrating optics, mechanics, and electronics. The total station emits electromagnetic waves towards the target object, and after the target object reflects, the instrument receives them, and calculates the distance value by calculating the transmission time of the electromagnetic waves. There are two methods: the pulse ranging method for direct measurement and the phase ranging method for indirect measurement. In the exploration and development of mines, the total station is used to measure the position, shape, and volume of ore bodies; monitor the deformation and displacement of mines to ensure the safe operation of mines.

[0003] When measuring in coal mine shafts, the prior art is to fix a plumb bob at the top of the roadway using wooden wedges. However, the wooden wedges are prone to corrosion, damage, and instability. In addition, the levels of coal mine workers vary, and some workers do not know the functions of these wooden wedges and plumb bobs, and often pat or pull them downwards, which in turn causes the position of the plumb bob to change. When the total station requires three-point measurement, the position of the total station will shift; in addition, due to the high wind speed in the roadway, the plumb bob will swing in the roadway, resulting in poor measurement accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixing device for total station measuring points in roadways with high wind speeds to solve the problems that the measuring points of the total station often shift and the measurement accuracy is poor.

[0005] The present invention adopts the following technical solutions: A fixing device for total station measuring points in roadways with high wind speeds, comprising:

[0006] A fixing pipe at the top of the roadway, which is vertically arranged, and its upper end is fixed to the lower end of a bolt or cable that has been anchored to the roof of the roadway;

[0007] A rope fixing column, which is vertically arranged, its upper end is threadedly connected to the lower end of the fixing pipe at the top of the roadway, its lower end passes through the anchor net and extends downward. A groove is horizontally opened at the lower end of the rope fixing column, and a through hole is opened upward from the lower end of the rope fixing column, and the through hole communicates with the groove;

[0008] A suspension rope, whose upper end is successively passed through the through hole and the groove of the rope fixing column and then tied, and its lower end suspends a plumb bob. The plumb bob is arranged close to the center of the roadway and is used to place the total station directly below it;

[0009] The wind shield is a tubular structure that is smaller at the top and larger at the bottom. Its upper end is sleeved and fixed to the lower end of the rope fixing column. Its lower end extends downward and completely encloses the suspension rope and the plumb bob, thereby preventing the suspension rope and the plumb bob from swinging in a roadway with a large wind speed, and avoiding errors in the measurement points of the total station due to the position change of the plumb bob.

[0010] Furthermore, the lower end of the wind shield is lower than the position where the plumb bob is located.

[0011] Furthermore, an annular reinforcing ring is fixedly connected to the outer wall of the wind shield. The reinforcing ring is used to increase the weight of the wind shield and is also used for workers to grab and forcibly stabilize it.

[0012] Furthermore, the distance from the lower end of the rope fixing column to the roadway roof is 10 - 20 cm.

[0013] The beneficial effects of the present invention are as follows:

[0014] By providing the fixing pipe at the top of the roadway, the entire device is fixed to the bolt or cable anchor that has been anchored to the roadway roof, avoiding driving bolts into the roadway roof again, and fixing the plumb bob to avoid disturbing the coal seam at the top of the roadway.

[0015] By providing the wind shield, the plumb bob and the suspension rope are completely enclosed, preventing the measurement point of the total station from deviating due to the swing of the plumb bob in a roadway with a large wind speed, thereby ensuring the breakthrough of the roadway.

[0016] By providing the reinforcing ring, on the one hand, it is convenient for workers to grasp and interfere with the wind shield to prevent it from swinging when necessary, and on the other hand, it increases the weight of the wind shield to prevent it from swinging. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention.

[0019] Among them: 10, fixing pipe at the top of the roadway; 11, rope fixing column; 12, suspension rope; 13, groove; 14, plumb bob; 15, wind shield; 16, reinforcing ring. Detailed Description of the Invention

[0020] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. The "direction" in the present invention is described based on the direction of the present invention when it is in Figure 1 the state.

[0022] The present invention discloses a fixing device for a total station measuring point in a roadway with a relatively high wind speed, as Figure 1 and Figure 2 shown, including: a roadway top fixing pipe 10, a rope fixing column 11, a suspension rope 12, and a wind shield 15.

[0023] The roadway top fixing pipe 10 is vertically arranged, and the upper end of the roadway top fixing pipe 10 is fixed to the lower end of a bolt or cable anchor that has been anchored to the roadway roof; the rope fixing column 11 is vertically arranged, the upper end of the rope fixing column 11 is threadedly connected to the lower end of the roadway top fixing pipe 10, the lower end of the rope fixing column 11 passes through the anchor mesh and extends downward, a groove 13 is horizontally opened at the lower end of the rope fixing column 11, and a through hole is opened upward from the lower end of the rope fixing column 11, and the through hole communicates with the groove 13. The lower end of the rope fixing column 11 is 10 - 20 cm away from the roadway roof.

[0024] The upper end of the suspension rope 12 passes through the through hole and the groove 13 of the rope fixing column 11 in sequence and then is tied. A plumb bob 14 is suspended at the lower end of the suspension rope 12. The plumb bob 14 is arranged close to the center of the roadway and is used to place a total station directly below it. The total station should be installed directly below the plumb bob 14, and the plumb bob 14 should be as close as possible to the measuring point or calibration point of the total station.

[0025] The wind shield 15 is a tubular structure with a smaller upper part and a larger lower part. The upper end of the wind shield 15 is sleeved and fixed to the lower end of the rope fixing post 11. The lower end of the wind shield 15 extends downward and completely encloses the suspension rope 12 and the plumb bob 14, thereby preventing the suspension rope 12 and the plumb bob 14 from swinging in a roadway with a relatively high wind speed, and preventing errors in the measurement points of the total station due to the position change of the plumb bob 14. For the material of the wind shield 15, a relatively light material is preferably selected to avoid the pulling force of gravity on the roadway roof.

[0026] The lower end of the wind shield 15 is lower than the position where the plumb bob 14 is located. It is sufficient that the lower end of the wind shield 15 is higher than the total station. An annular reinforcing ring 16 is fixedly connected to the outer wall of the wind shield 15. The reinforcing ring 16 is used to increase the weight of the wind shield 15 and is also used for workers to grab and forcibly stabilize it.

[0027] Embodiment 1

[0028] In a roadway with a relatively high wind speed, there is a problem that a plumb bob 14 is fixed to the top of the roadway using wooden wedges, and the wooden wedges are prone to corrosion, damage, and instability.

[0029] Therefore, when manufacturing the rope fixing post 11 of the present invention, it is made of a scrapped bolt or a waste steel bar, cut into a steel column with a length of 15 cm - 20 cm using a cutting machine, a groove 13 with a length of 2.5 cm and a depth of 1.2 cm is opened within a range of 2 cm - 4.5 cm from the lower end of the steel column, and then a through hole 14 is drilled at the bottom of the steel column using an electric drill.

[0030] Then, the suspension rope 12, the plumb bob 14, and the wind shield 15 are installed on the rope fixing post 11 and fixed to the lower end of the bolt or cable that has been anchored to the roadway roof through the roadway top fixing pipe 10.

[0031] During use, with the assistance of the wind shield 15, the swing of the plumb bob 14 is very small. A total station is placed below the plumb bob 14 and the roadway is measured to ensure the penetration of the roadway.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for fixing total station measuring points in a lane with high wind speed, characterized in that: include: A fixed pipe (10) at the top of the tunnel is arranged vertically, and its upper end is fixed to the lower end of an anchor rod or an anchor cable that has been anchored to the top plate of the tunnel; A rope fixing column (11) is vertically arranged, the upper end of which is threadedly connected to the lower end of the fixed pipe (10) at the top of the tunnel, and the lower end of which passes through the anchor net and extends downward, a groove (13) is horizontally opened at the lower end of the rope fixing column (11), and a through hole is opened from bottom to top at the lower end of the rope fixing column (11), and the through hole and the groove (13) are connected to each other; The upper end of the hanging rope (12) is passed through the through hole and the groove (13) of the rope fixing column (11) in sequence and then tied, and a plumb ball (14) is hung on the lower end of the hanging rope. The plumb ball (14) is arranged near the center of the tunnel and is used to place a total station directly below the plumb ball; The windshield shell (15) is a cylindrical structure with a small top and a large bottom. Its upper end is sleeved and fixed on the lower end of the rope fixing column (11), and its lower end extends downward and completely surrounds the suspension rope (12) and the plumb ball (14), thereby preventing the suspension rope (12) and the plumb ball (14) from swinging in a tunnel with a high wind speed, and preventing the measurement point of the total station from being erroneous due to the change in the position of the plumb ball (14).

2. A device for fixing total station measuring points in a tunnel with high wind speed according to claim 1, characterized in that: The lower end of the windshield shell (15) is lower than the position of the plumb ball (14).

3. The fixing device for total station measuring points in a lane with high wind speed according to claim 1, characterized in that: An annular reinforcement ring (16) is fixedly connected to the outer wall of the windshield shell (15). The reinforcement ring (16) is used to increase the weight of the windshield shell (15) and is also used for workers to grab and forcibly stabilize it.

4. The device for fixing total station measuring points in a lane with high wind speed according to claim 1, characterized in that: The lower end of the rope fixing column (11) is 10-20 cm away from the tunnel roof.

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