Coal mine geology drilling depth measuring instrument

Abstract

The utility model discloses a coal mine geology drilling depth measuring instrument which comprises a base, a winding drum is rotationally installed on the upper end face of the base, a measuring rope is wound around the winding drum, a driving part is fixed to one side of the upper end face of the base, and the output end of the driving part is connected with the winding drum. One end of the measuring rope is connected with a diameter measuring unit, and the diameter measuring unit penetrates into the drill hole in a sliding mode and abuts against and makes contact with the inner wall of the drill hole.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, specifically a coal mine geological borehole depth measuring instrument. Background Technology

[0002] In operations such as oil extraction, coal mining, construction drilling, and geological exploration, drilling rigs are typically used to drill holes of the required depth on the ground. However, in measuring the borehole depth, a measuring rod is often used directly. The measuring rod is easily affected by the disturbed soil attached to the borehole wall, which leads to inaccurate measurement results. Moreover, most measuring equipment is too simple to record the borehole inner diameter at the corresponding depth.

[0003] Therefore, it is necessary to provide a coal mine geological borehole depth measuring instrument to solve the problems mentioned in the background art. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coal mine geological borehole depth measuring instrument, which includes a base, a drum rotatably mounted on the upper end face of the base, a measuring rope wound on the drum, a driving part fixed on one side of the upper end face of the base, and the output end of the driving part connected to the drum;

[0005] One end of the measuring rope is connected to a diameter measuring unit, which slides deep into the borehole and abuts against the inner wall of the borehole.

[0006] The diameter measuring unit includes a central shaft seat with multiple connecting ends evenly distributed on its outer circumference. Each connecting end is slidably connected to a support column. A cylindrical seat is fixed to the upper end of the central shaft seat, and a rope threading disc is provided on the upper end face of the cylindrical seat.

[0007] Each of the support columns is fixed with an extension plate at its end, and a guide plate is connected between adjacent extension plates.

[0008] Rollers are installed on the outer wall of each of the aforementioned expansion plates;

[0009] A counterweight is provided below the central shaft seat.

[0010] Furthermore, as a preferred embodiment, the surface of the measuring rope is provided with scale markings.

[0011] Furthermore, as a preferred embodiment, a positioning sensor is installed inside the central shaft seat, and a signal receiving device is provided on the base.

[0012] Furthermore, preferably, both ends of the guide plate are slidably connected to the expansion plate, with an assembly gap between them, and the cross-sections of the guide plate and the expansion plate are arc-shaped; a distance sensor is fixed to the end of one of the pillars, and a receiver is fixed to the pillar in the opposite position.

[0013] Furthermore, as a preferred embodiment, a top support spring is provided between the guide plate and the expansion plate.

[0014] Furthermore, as a preferred embodiment, a support seat is fixed to the lower end face of the central shaft seat, a plurality of side spring frames are distributed on the outer circumference of the support seat, and a connecting plate is arranged parallel to the lower end face of the central shaft seat, with the upper end of each side spring frame connected to the connecting plate.

[0015] A compression spring is provided below the connecting plate, and the counterweight is connected to the connecting plate through the compression spring.

[0016] Furthermore, as a preferred embodiment, a plurality of telescopic vibrators are vertically connected inside the central shaft seat, and the output end of the telescopic vibrators is connected to the connecting plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The drum used in this invention can automatically wind up the measuring rope, thereby realizing automatic measurement of drilling depth.

[0019] The diameter measuring unit in this invention can record the borehole inner diameter in real time during borehole depth measurement, facilitating the recording and acquisition of changes in the borehole inner diameter.

[0020] The telescopic vibrator used in this invention can cause the counterweight to descend due to inertia when the diameter measuring unit is accidentally stuck, so as to provide a downward traction force to the diameter measuring unit without manual intervention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the diameter measuring unit in this utility model;

[0023] Figure 3 This is a cross-sectional view of the diameter measuring unit in this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the telescopic vibrator in this utility model;

[0025] In the diagram: 1. Base; 11. Drum; 12. Drive unit; 13. Measuring rope; 14. Counterweight; 2. Diameter measuring unit; 21. Central shaft seat; 22. Connecting end; 23. Support column; 24. Drum seat; 25. Rope threading reel; 26. Expansion plate; 27. Guide plate; 28. Top support spring; 29. ​​Roller; 3. Support seat; 31. Side spring frame; 32. Connecting plate; 33. Compression spring; 34. Telescopic vibrator. Detailed Implementation

[0026] Please see Figures 1-4 In this embodiment of the utility model, a coal mine geological borehole depth measuring instrument includes a base 1, a drum 11 is rotatably mounted on the upper end face of the base 1, a measuring rope 13 is wound on the drum 11, and a drive unit 12 is fixed on one side of the upper end face of the base 1. The output end of the drive unit 12 is connected to the drum 11 to facilitate driving the drum 11 to rotate.

[0027] One end of the measuring rope 13 is connected to the diameter measuring unit 2, which slides deep into the borehole and abuts against the inner wall of the borehole.

[0028] The diameter measuring unit 2 includes a central shaft seat 21, with multiple connecting ends 22 evenly distributed on its outer circumference. Each connecting end 22 is slidably connected to a support column 23. A cylindrical seat 24 is fixed to the upper end of the central shaft seat 21, and a rope threading disc 25 is provided on the upper end surface of the cylindrical seat 24.

[0029] Each end of the support column 23 is fixed with an expansion plate 26, and a guide plate 27 is connected between adjacent expansion plates 26.

[0030] Each of the expansion plates 26 is equipped with a roller 29 on its outer wall; the roller 29 can roll and contact the inner wall of the borehole.

[0031] A counterweight 14 is provided below the central shaft seat 21 to keep the measuring rope 13 straight as it is gradually lowered into the borehole.

[0032] In this embodiment, the surface of the measuring rope 13 is provided with scale markings.

[0033] In a preferred embodiment, a positioning sensor is installed inside the central shaft seat 21, and a signal receiving device is provided on the base 1.

[0034] In this embodiment, the two ends of the guide plate 27 are slidably connected to the expansion plate 26, and there is an assembly gap between them. The cross-sections of the guide plate 27 and the expansion plate 26 are arc-shaped. A distance sensor is fixed to the end of one of the pillars, and a receiver is fixed on the pillar in the opposite position, so as to accurately obtain the distance change between the two pillars in order to monitor the change in the borehole inner diameter.

[0035] In this embodiment, a top support spring 28 is provided between the guide plate 27 and the expansion plate 26.

[0036] In this embodiment, a support base 3 is fixed to the lower end face of the central shaft seat 21, and a plurality of side spring brackets 31 are distributed on the outer circumference of the support base 3. A connecting plate 32 is arranged parallel to the lower end face of the central shaft seat 21, and the upper end of each side spring bracket 31 is connected to the connecting plate 32.

[0037] A compression spring 33 is provided below the connecting plate 32, and the counterweight 14 is connected to the connecting plate 32 through the compression spring 33.

[0038] In a preferred embodiment, a plurality of telescopic vibrators 34 are vertically connected inside the central shaft seat 21. The output end of the telescopic vibrator 34 is connected to the connecting plate 32. Especially when the diameter measuring unit is accidentally stuck in the borehole, the telescopic vibrator 34 can drive the connecting plate 21 to slide under continuous telescopic vibration. At this time, the side spring frame 31 under the connecting plate is compressed synchronously, causing the main body of the connecting plate to vibrate. The counterweight 14 can achieve a downward pulling effect on the connecting plate under inertia, quickly and effectively restoring the diameter measuring unit to normal working state, ensuring the continuity and accuracy of the measurement data.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coal mine geological drilling depth measuring instrument, characterized in that: It include base (1), the upper end surface of base (1) is rotatably installed with reel (11), the reel (11) is wound with measuring rope (13), the upper end surface of base (1) is fixed with drive part (12), the output end of drive part (12) is connected with reel (11); The end of the measuring rope (13) is connected with a diameter measuring unit (2), the diameter measuring unit (2) slides into the borehole and is in contact with the inner wall of the borehole; The diameter measuring unit (2) includes a central shaft seat (21), which is uniformly distributed with a plurality of connecting ends (22) on the circumferential outer side, each connecting end (22) is slidably connected with a strut (23), the upper end of the central shaft seat (21) is fixed with a cylinder seat (24), the upper end surface of the cylinder seat (24) is provided with a rope passing disc (25); The end of the strut (23) is fixed with an expansion frame plate (26), and the adjacent expansion frame plates (26) are connected with a guide frame plate (27); Each expansion frame plate (26) is installed with a roller (29) on the outer wall thereof; The lower side of the central shaft seat (21) is provided with a counterweight (14).

2. The coal mine geological drilling depth measuring instrument according to claim 1, characterized in that: The surface of the measuring rope (13) is provided with scale marks.

3. The coal mine geological drilling depth measuring instrument according to claim 1, characterized in that: The central shaft seat (21) is installed with a positioning sensor, and the base (1) is provided with a signal receiving device.

4. The coal mine geological drilling depth measuring instrument according to claim 1, characterized in that: The two ends of the guide frame plate (27) are slidably connected with the expansion frame plates (26), and a fitting gap is left therebetween, the cross section of the guide frame plate (27) and the expansion frame plates (26) is in arc-shaped structure; the end of one of the struts (23) is fixed with a distance measuring sensor, and the opposite strut (23) is fixed with a receiver.

5. The coal mine geological drilling depth measuring instrument according to claim 1, characterized in that: A supporting spring (28) is arranged between the guide frame plate (27) and the expansion frame plates (26).

6. The coal mine geological drilling depth measuring instrument according to claim 1, characterized in that: The lower end surface of the central shaft seat (21) is fixed with a support seat (3), the circumferential outer side of the support seat (3) is distributed with a plurality of side spring frames (31), and the lower end surface of the central shaft seat (21) is parallelly provided with a connecting plate (32), the upper end of each side spring frame (31) is connected with the connecting plate (32); The lower side of the connecting plate (32) is provided with a compression spring (33), and the counterweight (14) is connected with the connecting plate (32) through the compression spring (33).

7. The coal mine geological drilling depth measuring instrument according to claim 6, characterized in that: A plurality of telescopic vibrators (34) are vertically connected in the central shaft seat (21), and the output end of the telescopic vibrator (34) is connected with the connecting plate (32).

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