Coal mine collapse depth measuring equipment

Abstract

The utility model relates to the technical field of coal mine collapse depth measurement, in particular to coal mine collapse depth measuring equipment, which comprises a primary support and a secondary support, a take-up roller is rotatably mounted between the primary support and the secondary support, and a measuring component is fixedly mounted on the surface of the take-up roller. A limiting rod and a reciprocating lead screw are installed below the take-up roller corresponding to the measuring assembly, the limiting rod is fixedly installed between the first-stage support and the second-stage support, the reciprocating lead screw is rotatably installed between the first-stage support and the second-stage support, a reciprocating block is installed on the surface of the reciprocating lead screw in a threaded connection mode, and the upper portion of the reciprocating block is slidably installed on the surface of the limiting rod. A limiting ring is further arranged on one side of the reciprocating block and arranged on the outer side of the measuring assembly in a sleeving mode, and the take-up roller and the reciprocating lead screw are connected with a driving device. The device is reasonable in structural design and convenient to use, the convenience of measurement is improved, and the device has high practicability.

Description

Technical Field

[0001] The utility model relates to a coal mine subsidence depth measuring device, belonging to the technical field of coal mine subsidence depth measurement. Background Art

[0002] After coal mining is completed, a cavity will be formed underneath, and the surface above the cavity may collapse due to lack of sufficient support. In order to understand the situation in the collapsed area and estimate the damage, it is usually necessary to measure its depth. When measuring, collapse depth measuring equipment is needed.

[0003] Chinese utility model patent: CN219551399U, discloses a coal mine surface subsidence depth measurement device, including a frame, a wire harness, a counterweight ball and a vibration motor, a rotatable wire shaft is arranged in the center of the frame, the wire harness is wound on the wire shaft, the wire shaft rotates, the wire harness is rolled up or lowered, a scale mark is arranged on the wire harness, the counterweight ball is fixed at the end of the wire harness, the vibration motor is installed in the counterweight ball, the wire harness includes a measuring rope and a power cord, the measuring rope and the power cord are fixed to each other, and the scale mark is arranged on the measuring rope. The counterweight ball in the utility model can vibrate and move, and when encountering a stone or mud block, it can also continue to move down to the bottom of the crack, avoiding the situation in the past where the counterweight block stops when encountering an obstacle and misleads the measurement personnel that it has reached the bottom of the crack. It is easy to operate and convenient to read, and the result of measuring the crack depth is more scientific and accurate. However, the device still has some problems. The wire harness is lowered by rotating the spool, and the counterweight ball and the wire harness enter the crack together. The crack depth can be determined by reading the scale mark. However, during the detection and line winding process, in order to prevent the cable from being entangled after winding, and to ensure that the wire harness is evenly wound on the surface of the spool, the winding position of the wire harness on the surface of the spool needs to be constantly adjusted by hand to ensure even winding, which leads to the problem of cumbersome operation of the winding process. Utility Model Content

[0004] The purpose of the utility model is to provide a coal mine subsidence depth measuring device to solve the problems raised in the above background technology.

[0005] The technical solution of the utility model is:

[0006] A coal mine subsidence depth measuring device comprises a primary support and a secondary support, wherein a wire take-up roller is rotatably installed between the primary support and the secondary support, a measuring assembly is fixedly installed on the surface of the wire take-up roller, a limit rod and a reciprocating screw rod are installed below the wire take-up roller corresponding to the measuring assembly, the limit rod is fixedly installed between the primary support and the secondary support, the reciprocating screw rod is rotatably installed between the primary support and the secondary support, a reciprocating block is threadedly installed on the surface of the reciprocating screw rod, the upper part of the reciprocating block is slidably installed on the surface of the limit rod, a limit ring is further arranged on one side of the reciprocating block, the limit ring is sleeved on the outer side of the measuring assembly, the wire take-up roller and the reciprocating screw rod are connected to a driving device.

[0007] Further preferably, the driving device includes a driving motor arranged on one side of the first-level bracket, the output shaft of the driving motor is connected to one end of the take-up roller, the other end of the take-up roller is connected to the first-level gear arranged on one side of the second-level bracket, a second-level gear meshing with the first-level gear is arranged below the first-level gear, and the second-level gear is connected to one end of the reciprocating screw.

[0008] Further preferably, the measuring component includes a cable, the cable is sleeved on the surface of the take-up roller, one end of the cable is fixed on the take-up roller, and the other end of the cable passes through a limit ring and is connected to a mounting block, and a gravity ball is fixedly installed on the lower side of the mounting block.

[0009] Further preferably, the measuring component also includes a signal transmitter, which is fixedly mounted on the upper side of the mounting block, a measuring platform is fixedly mounted on one side of the secondary bracket, and a signal receiver matching the signal transmitter is fixedly mounted on the upper side of the measuring platform.

[0010] Further preferably, an operating table is fixedly installed on the top of the first-level bracket, and a battery and a controller are fixedly installed on the operating table. The battery is connected to the controller, and the controller is connected to the drive motor and the signal receiver.

[0011] Further preferably, a mounting plate is fixedly installed at the bottom of the primary bracket and the secondary bracket, and two threaded holes are provided on the mounting plate, and fixing feet are threadedly installed in the threaded holes.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The coal mine subsidence depth measuring device described in the utility model controls the driving motor through a controller to drive the take-up roller to rotate in the opposite direction to retract the cable, the take-up roller drives the primary gear to rotate, the primary gear drives the secondary gear to rotate, the secondary gear drives the reciprocating screw to rotate, the reciprocating screw drives the reciprocating block to move under the limiting action of the limiting rod, the reciprocating block drives the limiting ring to move under the take-up roller, limits the cable during the take-up process, and makes the cable automatically and evenly wound along the surface of the take-up roller, thereby improving the convenience of using the device.

[0014] 2. The coal mine subsidence depth measuring device described in the utility model controls the driving motor through the controller to drive the take-up roller to rotate. Under the action of the gravity ball, the cable moves downward so that it continuously goes down into the crack. When it reaches the deepest point, the driving motor is turned off and the signal receiver is started through the controller. The signal receiver receives the signal from the signal transmitter and sends the signal distance to the controller for display, thereby obtaining the vertical distance between the signal receiver and the signal transmitter, and then obtaining the crack depth data, which greatly improves the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cutaway structure of the secondary support in the utility model;

[0017] Figure 3 This Figure 2 A schematic diagram of the structure enlargement of the A region in the middle;

[0018] Figure 4 It is a schematic diagram of the gravity ball and its related structures in the utility model.

[0019] Among them: 1. Primary bracket; 2. Secondary bracket; 3. Mounting plate; 4. Measuring table; 5. Signal receiver; 6. Cable; 7. Fixed foot; 8. Driving motor; 9. Operating table; 10. Battery; 11. Controller; 12. Primary gear; 13. Take-up roller; 14. Gravity ball; 15. Reciprocating screw; 16. Limit rod; 17. Reciprocating block; 18. Limit ring; 19. Secondary gear; 20. Signal transmitter; 21. Mounting block. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0021] Figure 1~Figure 4 It is the best embodiment of the utility model, and the following Figure 1~Figure 4 The utility model is further described.

[0022] like Figure 1~Figure 4As shown, a coal mine subsidence depth measuring device includes a primary support 1 and a secondary support 2, a primary rotating hole is opened on one side of the primary support 1, and a secondary rotating hole is opened on one side of the secondary support 2, a wire take-up roller 13 is rotatably installed between the primary support 1 and the secondary support 2, a measuring component is fixedly installed on the surface of the wire take-up roller 13, and a limit rod 16 and a reciprocating screw rod 15 are installed below the wire take-up roller 13 corresponding to the measuring component, the limit rod 16 is fixedly installed between the primary support 1 and the secondary support 2, the reciprocating screw rod 15 is rotatably installed between the primary support 1 and the secondary support 2, a reciprocating block 17 is screwed on the surface of the reciprocating screw rod 15, and the upper part of the reciprocating block 17 is slidably installed on the surface of the limit rod 16, a limit ring 18 is also arranged on one side of the reciprocating block 17, and the limit ring 18 is sleeved on the outer side of the measuring component, and the wire take-up roller 13 and the reciprocating screw rod 15 are connected to the driving device.

[0023] Specifically, the first-level bracket 1 and the second-level bracket 2 have the same shape, and the take-up roller 13 is rotatably installed between the first-level bracket 1 and the second-level bracket 2 through the first-level rotating hole and the second-level rotating hole. A measuring component for measuring the crack depth is installed on its surface. The reciprocating screw 15 is a prior art. When it rotates, it can drive the reciprocating block 17 to move. The reciprocating block 17 reciprocates along the surface of the reciprocating screw 15 under the limiting action of the limiting rod 16, so that the limiting ring 18 reciprocates, thereby limiting the measuring component when it is retracting and releasing the line.

[0024] Furthermore, the driving device includes a driving motor 8 arranged on one side of the first-level bracket 1, the output shaft of the driving motor 8 is connected to one end of the take-up roller 13, the other end of the take-up roller 13 is connected to the first-level gear 12 arranged on one side of the second-level bracket 2, and a second-level gear 19 meshing with the first-level gear 12 is arranged below the first-level gear 12, and the second-level gear 19 is connected to one end of the reciprocating screw rod 15.

[0025] Specifically, the driving motor 8 is a servo motor, which can rotate forward and reverse to provide power for the take-up roller 13.

[0026] Furthermore, the measuring component includes a cable 6, on which scale markings are set for easy reading. The cable 6 is sleeved on the surface of the take-up roller 13, one end of the cable 6 is fixed on the take-up roller 13, and the other end of the cable 6 passes through the limit ring 18 and is connected to the mounting block 21. A gravity ball 14 is fixedly installed on the lower side of the mounting block 21.

[0027] Specifically, the gravity ball 14 has the same internal structure as the patent number CN219551399U in the above-mentioned reference document. A vibration motor is installed inside to vibrate the gravity ball 14 to prevent it from getting stuck in a certain area in the crack and unable to continue to explore. No further details are given here. The gravity ball 14 is connected to one end of the cable 6 through the mounting block 21.

[0028] Furthermore, the measuring component also includes a signal transmitter 20, which is fixedly mounted on the upper side of the mounting block 21. A measuring table 4 is fixedly mounted on one side of the secondary bracket 2, and a signal receiver 5 that matches the signal transmitter 20 is fixedly mounted on the upper side of the measuring table 4.

[0029] Specifically, the signal transmitter 20 and the signal receiver 5 are both existing technologies, and their working principle is that the signal transmitter 20 sends a signal, and the signal receiver 5 is used to receive the signal and calculate the distance between the two. No further details are given here, which improves the measurement accuracy.

[0030] Furthermore, an operating table 9 is fixedly installed on the top of the first-level bracket 1, and a battery 10 and a controller 11 are fixedly installed on the operating table 9. The battery 10 is electrically connected to the controller 11, and the controller 11 is electrically connected to the drive motor 8 and the signal receiver 5.

[0031] Specifically, the battery 10 supplies power to the driving motor 8 in the device through the controller 11 . The controller 11 controls the driving motor 8 to rotate forward and reverse, and can display the measured depth of the signal receiver 5 .

[0032] Furthermore, a mounting plate 3 is fixedly installed at the bottom of the primary bracket 1 and the secondary bracket 2. The mounting plate 3 is provided with two threaded holes, and fixing feet 7 are threadedly installed in the threaded holes.

[0033] Specifically, mounting plates 3 are installed on the lower sides of the primary bracket 1 and the secondary bracket 2. The two mounting plates 3 are of the same size and are both screwed with two fixing feet 7. The bottom ends of the fixing feet 7 are tapered, which is convenient for inserting into the soil for fixation. By adjusting the heights of the multiple fixing feet 7, the entire device can be easily adjusted horizontally.

[0034] The working principle and use process of this utility model:

[0035] When in use, the device is carried to the surface collapse area that needs to be measured, and then the gravity ball 14 is placed in the measurement crack. The multiple fixed feet 7 are manually turned to adjust the height of the fixed feet 7 on the mounting plate 3 to keep the operating table 9 level. The drive motor 8 is started through the controller 11, and the output end of the drive motor 8 drives the take-up roller 13 to rotate. The take-up roller 13 drives the cable 6 to move downward. The cable 6 moves downward along the crack under the action of the gravity ball 14. When it reaches the deepest point, the drive motor 8 is turned off. The crack depth can be directly read according to the scale mark on the cable 6. The crack depth can be obtained by measuring the length of the cable 6. The signal receiver 5 can also be started through the controller 11. The signal receiver 5 receives the signal of the signal transmitter 20 and sends the signal distance to the controller 11 for display, thereby obtaining the vertical distance between the signal receiver 5 and the signal transmitter 20, and then obtaining the crack depth data.

[0036] After the measurement is completed, the driving motor 8 is started by the controller 11 to rotate in the reverse direction, and the output end of the driving motor 8 drives the take-up roller 13 to rotate in the reverse direction to retract the cable 6. During the retraction process, the take-up roller 13 drives the first-level gear 12 to rotate, and the first-level gear 12 will drive the second-level gear 19 to rotate, and the second-level gear 19 will drive the reciprocating screw 15 to rotate, and the reciprocating screw 15 will drive the reciprocating block 17 to move under the limiting action of the limiting rod 16, and the reciprocating block 17 will drive the limiting ring 18 to move under the take-up roller 13, so as to limit the cable 6 during the rewinding process, so that the cable 6 is automatically wound evenly along the surface of the take-up roller 13, thereby improving the convenience of using the device.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A coal mine subsidence depth measuring device, comprising a primary support (1) and a secondary support (2), characterized in that: A wire take-up roller (13) is rotatably mounted between the primary bracket (1) and the secondary bracket (2), a measuring assembly is fixedly mounted on the surface of the wire take-up roller (13), a limit rod (16) and a reciprocating screw rod (15) are mounted below the wire take-up roller (13) corresponding to the measuring assembly, the limit rod (16) is fixedly mounted between the primary bracket (1) and the secondary bracket (2), the reciprocating screw rod (15) is rotatably mounted between the primary bracket (1) and the secondary bracket (2), a reciprocating block (17) is threadedly mounted on the surface of the reciprocating screw rod (15), the upper part of the reciprocating block (17) is slidably mounted on the surface of the limit rod (16), a limit ring (18) is further arranged on one side of the reciprocating block (17), and the limit ring (18) is sleeved on the outer side of the measuring assembly, and the wire take-up roller (13) and the reciprocating screw rod (15) are connected to a driving device.

2. A coal mine subsidence depth measuring device according to claim 1, characterized in that: The driving device comprises a driving motor (8) arranged on one side of the primary bracket (1), the output shaft of the driving motor (8) being connected to one end of a wire take-up roller (13), the other end of the wire take-up roller (13) being connected to a primary gear (12) arranged on one side of the secondary bracket (2), a secondary gear (19) meshing with the primary gear (12) being arranged below the primary gear (12), and the secondary gear (19) being connected to one end of a reciprocating screw rod (15).

3. A coal mine subsidence depth measuring device according to claim 1, characterized in that: The measuring assembly comprises a cable (6), the cable (6) being sleeved on the surface of the take-up roller (13), one end of the cable (6) being fixed on the take-up roller (13), the other end of the cable (6) passing through a limit ring (18) and then connected to a mounting block (21), and a gravity ball (14) being fixedly mounted on the lower side of the mounting block (21).

4. A coal mine subsidence depth measuring device according to claim 3, characterized in that: The measuring assembly further comprises a signal transmitter (20), the signal transmitter (20) being fixedly mounted on the upper side of the mounting block (21), a measuring platform (4) being fixedly mounted on one side of the secondary bracket (2), and a signal receiver (5) matching the signal transmitter (20) being fixedly mounted on the upper side of the measuring platform (4).

5. A coal mine subsidence depth measuring device according to claim 1, characterized in that: An operating table (9) is fixedly mounted on the top of the primary bracket (1), a storage battery (10) and a controller (11) are fixedly mounted on the operating table (9), the storage battery (10) is connected to the controller (11), and the controller (11) is connected to the drive motor (8) and the signal receiver (5).

6. A coal mine subsidence depth measuring device according to claim 1, characterized in that: The bottoms of the primary bracket (1) and the secondary bracket (2) are both fixedly mounted with a mounting plate (3), and the mounting plate (3) is provided with two threaded holes, in which fixing feet (7) are screwed and mounted.

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