Drilling depth measuring device for coal mines

Abstract

The utility model relates to hole depth measuring device technical field, especially relates to coal mine drilling depth measuring device, including the lifting device and the measurement subassembly of the rope cable down to be located above the mine hole, the lifting device side is provided with the check auxiliary device, the lifting device includes the wheel disc for to the rope cable collection, the wheel disc is fixed with the pivot of intermediate transverse, the pivot is rotatably connected with the bearing seat of both sides, the one end of pivot is fixedly connected with the reducer output shaft, the other end is connected with check auxiliary device, the reducer is driven by the drive motor, and both sides bearing seat are all fixed on the bottom plate on the support, the utility model adopts double motor to measure the unwinding and winding of rope cable, and simultaneously for the measurement subassembly of the tail end of rope cable, has adopted the stable multilayer disc structure and the flexible buffer structure of air bag, utilizes the inclination transducer to also improved the measurement accuracy when the rope cable is skew.

Description

Technical Field

[0001] This utility model relates to the technical field of hole depth measuring devices, and in particular to a hole depth measuring device for coal mines. Background Technology

[0002] In existing coal mines, the drilled boreholes need to be measured for depth. Existing measuring devices require manual lowering of cables, which is time-consuming, labor-intensive, and inaccurate. Furthermore, during the drilling process, the measuring device is prone to contact with the borehole wall due to the airflow in the borehole. Although existing measuring devices have a sturdy outer shell, this rigid impact can easily damage internal parts. Therefore, there is an urgent need for an automated measuring device that can accurately measure borehole depth and conduct exploration in one step, while also providing flexible anti-collision protection. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art and achieve the above-mentioned functions, this utility model provides a drilling depth measuring device for coal mines.

[0004] This utility model is achieved through the following technical solution: A drilling depth measuring device for coal mines includes a lifting device located above the borehole and a measuring component that extends downwards via a rope. A calibration auxiliary device is provided on the side of the lifting device. The lifting device includes a wheel for winding and unwinding the rope. The wheel is fixed to a central transverse rotating shaft. The rotating shaft is rotatably connected to bearing seats on both sides. One end of the rotating shaft is fixedly connected to the output shaft of the reducer, and the other end is connected to a calibration auxiliary device. The reducer is driven by a drive motor, and the bearing seats on both sides are fixed to the base plate on the bracket. The measuring assembly includes three discs fixed at intervals by a cylinder, with air bladders between each pair of discs. The cylinder has internal threads and is threaded to the internal disc core. The top of the disc core is a hexagonal prism, and a column block for placing a searchlight and a camera is installed in the disc core.

[0005] Furthermore, the verification auxiliary device includes a bevel gear a fixed at the end of the rotating shaft, and an auxiliary motor fixed on the bracket. An encoder is installed on the auxiliary motor, and a bevel gear b that meshes with the bevel gear a is fixed on the output shaft of the auxiliary motor. The auxiliary motor is linearly connected to a controller located on the bracket.

[0006] Furthermore, the air bladder's inflation port passes through the top and bottom discs, and the air bladder is annular in shape. After inflation, its diameter is larger than the diameter of the disc, and the air bladder abuts against the disc from top to bottom.

[0007] Furthermore, a rotatable handle and two tilt sensors, one at the front and one at the back, are mounted on the top disc.

[0008] Furthermore, the bottom of the cylinder protrudes from the lowest disc, and a ring of threaded holes is provided on the bottom edge of the cylinder, through which tempered glass is fixed to protect the lens.

[0009] The beneficial effects of this utility model are: This invention uses dual motors for unwinding and rewinding the measuring rope. Meanwhile, for the measuring component at the end of the rope, a stable multi-layer disc structure and a flexible buffer structure with an air bladder are adopted. The use of an angle sensor also improves the measurement accuracy when the rope is tilted. Attached Figure Description

[0010] 1. Wheel, 101. Axle, 102. Rope, 2. Bracket, 201. Bearing housing, 202. Bevel gear a, 203. Base plate. 3. Drive motor, 301, reducer, 4. Controller; 401. Auxiliary motor; 402. Bevel gear b. 5. Disc, 501. Disc core, 502. Disc cylinder, 503. Tempered glass. 6. Airbag, 601, Inflation port, 7. Column block; 701. Searchlight; 702. Camera; 8. Tilt sensor; 9. Handle.

[0011] In the picture: Figure 1 This is a schematic diagram of the overall structure of the measurement component; Figure 2 A schematic diagram of the overall structure of the verification auxiliary device; Figure 3 This is a schematic diagram of the bottom structure of the verification auxiliary device; Figure 4 This is a schematic diagram of a half-section of the verification auxiliary device; Figure 5 This is a front view of the verification auxiliary device; Figure 6 A three-dimensional schematic diagram of the top of the verification auxiliary device; Figure 7 A schematic diagram of the half-section structure after tempered glass is installed on the calibration auxiliary device; Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments; the components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] like Figures 1 to 7 As shown, this utility model includes a lifting device located above the mine hole and a measuring component that extends down through a rope 102. The lifting device is equipped with a verification auxiliary device on its side to verify whether the length of the rope 102 lowered by the drive motor 3 is consistent with its detection. Of course, the drive motor 3 is also equipped with an encoder. The lifting device includes a wheel 1 for winding and unwinding the rope 102. The wheel is fixed to a central transverse rotating shaft 101. The rotating shaft 101 is rotatably connected to bearing seats 201 on both sides to maintain stability. One end of the rotating shaft 101 is fixedly connected to the output shaft of the reducer 301, and the other end is connected to a calibration auxiliary device. The reducer 301 is driven by a drive motor 3. The bearing seats 302 on both sides are fixed on the base plate 203 on the bracket 2. The measuring assembly includes three discs 5 fixed at intervals by a cylinder 502, serving as a base. Air bladders 6 are positioned between each pair of discs 5. The cylinder 502 has internal threads and is threadedly connected to the internal disc core 501. (Reference) Figure 4 The top of the disk core 501 is a hexagonal prism, for reference. Figure 4 The hexagonal prism structure facilitates screwing and installation and can be snapped in place to prevent the disk core 501 from falling, thus serving as a limit. The disk core 501 is equipped with a column block 7 for placing the searchlight 701 and the camera 702. The column block 7 is a conventional installation and snapping carrier structure, which should be familiar to those in the mechanical manufacturing field. The searchlight 701 and the camera 702 can simultaneously explore the hole during the downward measurement process.

[0015] The verification auxiliary device includes a bevel gear a202 fixed at the end of the rotating shaft 101, and an auxiliary motor 401 fixed on the bracket 2. An encoder is installed on the auxiliary motor 401, and a bevel gear b402 that meshes with the bevel gear a202 is fixed on the output shaft of the auxiliary motor 401 to reduce the width of the whole machine and increase the torque. The auxiliary motor 401 is linearly connected to the controller 4 located on the bracket 2. The auxiliary motor 401 can be a servo motor. Since the coil may burn out during the process of driving the motor 3, the controller 4 is provided so that it can both follow the motor and exert force simultaneously with the drive motor 3 during winding to improve winding efficiency.

[0016] The air inlet 601 of the airbag 6 passes through the top and bottom discs 5. The airbag 6 is annular and its diameter is larger than that of the disc 5 after inflation. It is used to buffer and flexibly impact the mine wall. The airbag abuts against the disc 5 from the top and bottom to maintain tightness.

[0017] The top disc 5 is equipped with a rotatable handle 9 for securing the rope 102; and two tilt sensors 8 at the front and rear for detecting the degree of tilt of the rope 102 in order to accurately measure the depth.

[0018] The bottom of the cylinder 502 protrudes from the lowest circular disk 5, as shown in the reference. Figure 1 The bottom edge of the cylinder 502 is provided with a ring of threaded holes, and the tempered glass 503 is fixed by the threads to protect the lens.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A borehole depth measuring device for coal mines, characterized in that: It includes a lifting device located above the mine hole and a measuring component that is lowered by a rope (102), and a calibration auxiliary device is provided on the side of the lifting device; The lifting device includes a wheel (1) for winding and unwinding the rope (102). The wheel is fixed to the central transverse rotating shaft (101). The rotating shaft (101) is rotatably connected to the bearing seats (201) on both sides. One end of the rotating shaft (101) is fixedly connected to the output shaft of the reducer (301), and the other end is connected to the calibration auxiliary device. The reducer (301) is driven by the drive motor (3). The bearing seats (201) on both sides are fixed on the base plate (203) on the bracket (2). The measuring assembly includes three discs (5) fixed at intervals above and below by a cylinder (502). Airbags (6) are provided between each pair of discs (5). The cylinder (502) is provided with internal threads and is threadedly connected to the internal disc core (501). The top of the disc core (501) is a hexagonal prism, and a column block (7) for placing a searchlight (701) and a camera (702) is installed in the disc core (501).

2. The drilling depth measuring device for coal mines according to claim 1, characterized in that: The verification auxiliary device includes a bevel gear a (202) fixed at the end of the rotating shaft (101) and an auxiliary motor (401) fixed on the bracket (2). An encoder is installed on the auxiliary motor (401). A bevel gear b (402) that meshes with the bevel gear a (202) is fixed on the output shaft of the auxiliary motor (401). The auxiliary motor (401) is linearly connected to the controller (4) located on the bracket (2).

3. The drilling depth measuring device for coal mines according to claim 1, characterized in that: The air inlet (601) of the airbag (6) passes through the top and bottom discs (5). The airbag (6) is annular, and its diameter after inflation is larger than that of the disc (5). The airbag abuts against the disc (5) from top to bottom.

4. The drilling depth measuring device for coal mines according to claim 1, characterized in that: The top disc (5) is equipped with a rotatable handle (9) and two tilt sensors (8) at the front and back.

5. The drilling depth measuring device for coal mines according to claim 1, characterized in that: The bottom of the cylinder (502) protrudes from the lowest disk (5), and a ring of threaded holes is provided on the bottom edge of the cylinder (502), and tempered glass (503) is fixed by the threads to protect the lens.

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