Device for measuring depth of surface crack in mining subsidence area

Abstract

The utility model relates to the field of crack depth measurement, in particular to a mining subsidence area earth surface crack depth measuring device which comprises a fixing frame, idler wheel installation frames which are symmetrically distributed are arranged above the fixing frame, and a first stepping motor is fixedly arranged on one side of one idler wheel installation frame through a bolt. A rotating shaft of the first stepping motor penetrates through the rolling wheel mounting frame and then is fixedly provided with a winding drum, a lifting rope is wound in the winding drum, a moving mechanism is further arranged at the bottom of the fixing frame and comprises a base frame, three first rubber rollers are arranged on one side of the upper portion in the base frame, and three second rubber rollers are arranged on the other side of the upper portion in the base frame. According to the utility model, the electric push rod, the second stepping motor and the circular rotating plate are matched to drive the moving mechanism to adjust the direction, the device can cope with complex underground cracks, and two mechanisms, namely the lifting rope with scales and the altimeter, are used for height measurement, so that the practicability of the device is higher.

Description

Technical Field

[0001] The utility model relates to the field of crack depth measurement, in particular to a device for measuring the depth of cracks on the surface of a mining subsidence area. Background Art

[0002] The area where underground coal mining causes rock movement and surface subsidence is also called mining subsidence area. After the mineral is mined, the original mechanical equilibrium state of the rock mass around the mining area is destroyed, causing the rock to move, deform and be damaged. When the mining area reaches a certain range, the movement and damage will spread to the surface; houses, buildings, railways, rivers and wells and tunnels within the mining area will be deformed or damaged.

[0003] In the mining subsidence area, there will be a certain amount of cracks. The width of the cracks is generally wide, and the inside is non-vertical, which makes it impossible for conventional laser depth measurement devices to measure the depth of the cracks. In addition, the bottom structure of the cracks is relatively complex, so that the unpowered measuring mechanism cannot reach the bottom of the cracks directly after being placed in the cracks, making it difficult to make accurate measurements.

[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a device for measuring the depth of ground cracks on the surface of a mining subsidence area to solve the above-mentioned technical defects.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A device for measuring the depth of cracks on the surface of a mining subsidence area comprises a fixed frame, above which roller mounting frames are symmetrically arranged, one side of one of the roller mounting frames is fixedly provided with a first stepper motor by bolts, a rotating shaft of the first stepper motor passes through the roller mounting frame and is fixedly provided with a winding drum, a lifting rope is wound inside the winding drum;

[0008] A moving mechanism is also provided at the bottom of the fixed frame, and the moving mechanism includes a base frame, three first rubber rollers are provided on one side of the upper interior of the base frame, three second rubber rollers are provided on the other side of the upper interior of the base frame, and rotatably connected third rubber rollers are provided on both sides of the lower interior of the base frame. A fixedly connected ventilation hood is also provided above the base frame, an altimeter is placed inside the ventilation hood, and symmetrically distributed cameras are also provided above the base frame.

[0009] Preferably, the roller mounting frame is fixedly connected to the fixing frame, a slot is further provided on the top of the fixing frame, the slot is located between the roller mounting frames, a length scale is provided on the suspension rope, a fixedly connected hanging frame is further provided below the fixing frame, a first extension frame for sliding connection is provided on one side of the interior of the fixing frame, and a second extension frame for sliding connection is provided on the other side of the interior of the fixing frame;

[0010] The first extension frame and the second extension frame are provided with array-distributed plug holes inside, and a sliding plug is provided on the top of the fixing frame. A fixedly connected telescopic spring is provided between the crown of the plug and the fixing frame.

[0011] Preferably, protective covers are provided on both sides of the base frame by bolts, the upper end of the base frame is fixedly connected to one end of the suspension rope, and the cameras are fixed to the base frame by bolts.

[0012] Preferably, an electric push rod is fixedly provided on the top of the base frame by bolts, the telescopic end of the electric push rod passes through the base frame and is fixedly provided with a mounting frame, a second stepper motor is fixedly provided on the inner bottom of the mounting frame by bolts, and a rotating shaft of the second stepper motor passes through the mounting frame and is fixedly provided with a circular rotating plate.

[0013] Preferably, the first rubber roller and the second rubber roller are both rotatably connected to the base frame, and a first pulley assembly is also provided on the outer side of the base frame, the first pulley assembly consists of two pulleys and a transmission belt, the shafts at both ends of the first rubber roller pass through the base frame and are fixedly connected to a pulley in the first pulley assembly, and the shafts at both ends of the second rubber roller pass through the base frame and are also fixedly connected to a pulley in the first pulley assembly.

[0014] Preferably, an extension plate is fixedly provided on one side of the base frame by welding, a third stepper motor is fixedly provided above the extension plate by bolts, and a rotating shaft of the third stepper motor is fixedly connected to a shaft at one end of the first rubber roller.

[0015] Preferably, a shaft at one end of one of the second rubber rollers passes through the base frame and is fixedly provided with a first rodless spur gear, a first rod-belted spur gear is further provided on one side of the base frame, a rotating rod at one end of the first rod-belted spur gear is inserted into the base frame and is rotatably connected to the base frame, and the first rod-belted spur gear is meshed with the first rodless spur gear;

[0016] The rotating rod at the other end of the first rod spur gear is fixedly connected to a pulley in the first pulley assembly, and the pulley in the other end of the first pulley assembly on one side of the first rod spur gear is fixedly connected to the shaft at one end of the first rubber roller.

[0017] Preferably, one end of the third rubber roller is provided with a second pulley assembly after passing through the base frame, and the second pulley assembly is also composed of two pulleys and a transmission belt, one of the third rubber rollers is connected to one of the second rubber rollers through the second pulley assembly, and the shaft at one end of the other third rubber roller is also fixedly connected to the pulley in the second pulley assembly after passing through the base frame, and a second spur gear with a rod is fixedly provided inside the pulley at the other end of the second pulley assembly;

[0018] The shaft at the other end of the second spur gear with rod is rotatably connected to the base frame, and the other end of one of the first rubber rollers passes through the base frame and is fixed with a second rodless spur gear, and the second rodless spur gear is meshed with the second spur gear with rod.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model starts the first stepper motor to drive the winding drum to rotate. When the winding drum rotates, the hanging rope wound on the outer side of the winding drum moves downward, so that the moving mechanism moves downward. When the moving mechanism moves until the lower end of the moving mechanism touches the ground, the camera is turned on to observe whether this is the bottom of the crack. If there are other cracks beside it, the third stepper motor is started to drive the two third rubber rollers to rotate, thereby driving the moving mechanism to translate. When the direction needs to be rotated, the circular rotating plate is pushed by starting the electric push rod to lift the base frame, and then the second stepper motor is started to drive the circular rotating plate to rotate. When the circular rotating plate rotates, it drives the base frame to rotate and adjust the direction. After the direction is adjusted, the moving mechanism continues to move until the moving mechanism reaches the bottom of the crack.

[0021] At this time, open the altimeter in the ventilation hood to calculate the height, and observe the scale at the hanging rope to observe the height. After the height is recorded, start the first stepper motor to reverse and retract the hanging rope, and at the same time drive the moving mechanism to move upward. At this time, the third stepper motor is in the on state, and the third stepper motor drives the first rubber roller and the second rubber roller to rotate in the same speed and in the opposite direction, so that the moving mechanism can move if it encounters an obstacle during the upward movement, so that the device can cope with more complex cracks in the underground situation. The device uses two mechanisms, the hanging rope with a scale and the altimeter, to measure the height, which makes the device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings;

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the connection structure between the fixing frame and the first stepper motor in the utility model;

[0025] Figure 3It is a schematic diagram of the connection structure of the first extension frame, the second extension frame and the fixed frame in the utility model;

[0026] Figure 4 It is a schematic diagram of the overall structure of the mobile mechanism in the utility model;

[0027] Figure 5 It is a schematic diagram of the connection structure between the base frame and the circular rotating plate in the utility model;

[0028] Figure 6 It is a schematic diagram of the connection structure between the first rubber roller and the second rubber roller in the utility model;

[0029] Figure 7 It is a schematic diagram of the connection structure of the first rubber roller, the second rubber roller and the third rubber roller in the utility model.

[0030] Legend: 1. Fixed frame; 11. Roller mounting frame; 12. First stepper motor; 13. Winding drum; 14. Lifting rope; 15. Slot; 16. Hanging frame; 17. Plug; 18. Telescopic spring; 19. First extension frame; 20. Second extension frame; 21. Socket; 3. Moving mechanism; 31. Base frame; 32. Protective cover; 33. Ventilation hood; 34. Camera; 35. Electric push rod; 36. Mounting frame; 37. Second stepper motor; 38. Circular rotating plate; 39. Extension plate; 40. Third stepper motor; 41. First pulley assembly; 42. First rubber roller; 421. Second rubber roller; 43. First rodless spur gear; 44. First rod-carrying spur gear; 45. Third rubber roller; 46. Second pulley assembly; 47. Second rodless spur gear; 48. Second rod-carrying spur gear. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1 - Figure 7 As shown, the utility model is a device for measuring the depth of surface cracks in mining subsidence areas, comprising a fixed frame 1, above which are symmetrically distributed roller mounting frames 11, the roller mounting frames 11 being fixedly connected to the fixed frame 1, and above the fixed frame 1 are further provided with slots 15, the slots 15 being located between the roller mounting frames 11, one side of one of the roller mounting frames 11 being fixedly provided with a first stepper motor 12 by bolts, the rotating shaft of the first stepper motor 12 passing through the roller mounting frame 11 and being fixedly provided with a winding drum 13.

[0033] A lifting rope 14 is wound around the inside of the winding drum 13, and a length scale is provided on the lifting rope 14 to facilitate the reading of the crack depth. A fixedly connected hanging bracket 16 is also provided below the fixed frame 1, a slidingly connected first extension frame 19 is provided on one side of the inside of the fixed frame 1, and a slidingly connected second extension frame 20 is provided on the other side of the inside of the fixed frame 1. Array-distributed sockets 21 are provided inside the first extension frame 19 and the second extension frame 20. A slidingly connected plug 17 is also provided above the fixed frame 1, and a fixedly connected telescopic spring 18 is provided between the crown of the plug 17 and the fixed frame 1, and the plug 17 is used to be inserted into the socket 21 to fix the first extension frame 19 or the second extension frame 20.

[0034] A moving mechanism 3 is also provided at the bottom of the fixed frame 1, and the moving mechanism 3 includes a base frame 31. Protective covers 32 are provided on both sides of the base frame 31 by bolts. The upper end of the base frame 31 is fixedly connected to one end of the suspension rope 14. A fixed ventilation hood 33 is also provided above the base frame 31, and an altimeter is placed inside the ventilation hood 33. Symmetrically distributed cameras 34 are also provided above the base frame 31, and the cameras 34 are fixed to the base frame 31 by bolts.

[0035] An electric push rod 35 is also fixed on the top of the base frame 31 by bolts. The telescopic end of the electric push rod 35 passes through the base frame 31 and is fixed with a mounting frame 36. A second stepper motor 37 is fixed to the inner bottom of the mounting frame 36 by bolts. The rotating shaft of the second stepper motor 37 passes through the mounting frame 36 and is fixed with a circular rotating plate 38.

[0036] When the base frame 31 needs to rotate, the electric push rod 35 is started first, and the electric push rod 35 drives the mounting frame 36 to move downward until the circular rotating plate 38 lifts the base frame 31, and then the second stepper motor 37 is started, and the second stepper motor 37 drives the circular rotating plate 38 to rotate. At this time, the circular rotating plate 38 contacts the ground, so that the circular rotating plate 38 drives the base frame 31 to rotate and adjust the direction.

[0037] Three first rubber rollers 42 are provided on one side of the upper interior of the base frame 31, and three second rubber rollers 421 are provided on the other side of the upper interior of the base frame 31. The first rubber rollers 42 and the second rubber rollers 421 are both rotatably connected to the base frame 31. A first pulley assembly 41 is also provided on the outer side of the base frame 31. The first pulley assembly 41 consists of two pulleys and a transmission belt. The shafts at both ends of the first rubber roller 42 pass through the base frame 31 and are fixedly connected to a pulley in the first pulley assembly 41.

[0038] The shafts at both ends of the second rubber roller 421 pass through the base frame 31 and are fixedly connected to a pulley in the first pulley assembly 41, so that the three first rubber rollers 42 rotate synchronously when rotating, and the three second rubber rollers 421 also rotate synchronously when rotating. An extension plate 39 is also fixedly provided on one side of the base frame 31 by welding, and a third stepper motor 40 is fixedly provided above the extension plate 39 by bolts, and the rotating shaft of the third stepper motor 40 is fixedly connected to the shaft at one end of the first rubber roller 42.

[0039] The shaft at one end of one of the second rubber rollers 421 passes through the base frame 31 and is fixedly provided with a first rodless spur gear 43. A first rod-belted spur gear 44 is also provided on one side of the base frame 31. The rotating rod at one end of the first rod-belted spur gear 44 is inserted into the base frame 31 and is rotatably connected to the base frame 31. The first rod-belted spur gear 44 is meshed with the first rodless spur gear 43. The rotating rod at the other end of the first rod-belted spur gear 44 is fixedly connected to a pulley in the first pulley assembly 41. The pulley in the other end of the first pulley assembly 41 on one side of the first rod-belted spur gear 44 is fixedly connected to the shaft at one end of the first rubber roller 42.

[0040] When the third stepper motor 40 is started, it drives the first rubber roller 42 to rotate. When the first rubber roller 42 rotates, it drives the first rod-belted spur gear 44 to rotate through the first pulley assembly 41. The first rod-belted spur gear 44 drives the first rodless spur gear 43 to mesh and rotate. The first rodless spur gear 43 drives the second rubber roller 421 therein to rotate, so that the first rubber roller 42 and the second rubber roller 421 rotate in opposite directions at the same speed.

[0041] A third rubber roller 45 is rotatably connected on both sides of the lower interior of the base frame 31. One end of the third rubber roller 45 passes through the base frame 31 and is provided with a second pulley assembly 46. The second pulley assembly 46 also consists of two pulleys and a transmission belt, which is used to connect the synchronous rotation between the two shafts. One of the third rubber rollers 45 is connected to one of the second rubber rollers 421 through the second pulley assembly 46, so that when the second rubber roller 421 rotates, it drives the third rubber roller 45 to rotate synchronously in the same direction. The shaft at one end of the other third rubber roller 45 passes through the base frame 31 and is also fixedly connected to the pulley in the second pulley assembly 46.

[0042] A second rod-belt spur gear 48 is fixedly provided inside the pulley at the other end of the second pulley assembly 46, and the shaft at the other end of the second rod-belt spur gear 48 is rotatably connected to the base frame 31. The other end of one of the first rubber rollers 42 passes through the base frame 31 and is fixedly provided with a second rodless spur gear 47. The second rodless spur gear 47 is meshed with the second rod-belt spur gear 48. When the first rubber roller 42 rotates, it drives the second rodless spur gear 47 to rotate. When the second rodless spur gear 47 rotates, it drives the second rod-belt spur gear 48 to rotate. When the second rod-belt spur gear 48 rotates, it drives another third rubber roller 45 to rotate through the second pulley assembly 46, so that the two third rubber rollers 45 rotate synchronously in the same direction.

[0043] The working process and principle of the utility model are as follows:

[0044] When in use, first place the mobile mechanism 3 on the hanging bracket 16, then place the device above the cracks in the mining subsidence area. When the cracks in the mining subsidence area are wider, pull out the two plugs 17 in the fixed frame 1, then pull apart the second extension frame 20 and the first extension frame 19, place the first extension frame 19 and the second extension frame 20 of the device above the two ends of the crack, then release the plug 17, and the plug 17 is inserted into the jack 21 under the action of the telescopic spring 18, so as to fix the first extension frame 19 and the second extension frame 20, then remove the mobile mechanism 3 from the hanging bracket 16, start the first stepper motor 12 to drive the winding drum 13 to rotate, and when the winding drum 13 rotates, the suspension rope 14 wound on the outside of the winding drum 13 moves downward, so that the mobile mechanism 3 moves downward;

[0045] Because most of the cracks are not vertical cracks, when the moving mechanism 3 moves to the point where the lower end of the moving mechanism 3 touches the ground, the camera 34 is turned on to observe whether this is the bottom of the crack. If there are other cracks beside it, the third stepper motor 40 is started to drive the two third rubber rollers 45 to rotate, thereby driving the moving mechanism 3 to translate. When the direction needs to be rotated, the electric push rod 35 is started first, and the electric push rod 35 drives the mounting frame 36 to move downward until the circular rotating plate 38 lifts the base frame 31. Then the second stepper motor 37 is started, and the second stepper motor 37 drives the circular rotating plate 38 to rotate. At this time, the circular rotating plate 38 contacts the ground, so that the circular rotating plate 38 drives the base frame 31 to rotate and adjust the direction until the moving mechanism 3 reaches the bottom of the crack.

[0046] At this time, open the altimeter in the ventilation hood 33 to calculate the height, and observe the scale at the suspension rope 14 to observe the height. After the height is recorded, start the first stepper motor 12 to reverse and retract the suspension rope 14, and at the same time drive the moving mechanism 3 to move upward. At this time, the third stepper motor 40 is in the turned-on state, and the third stepper motor 40 drives the first rubber roller 42 and the second rubber roller 421 to rotate in the same speed and in the opposite direction, so that the moving mechanism 3 can move if it encounters an obstacle during the upward movement.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A device for measuring the depth of ground cracks in a mining subsidence area, comprising a fixed frame (1), characterized in that: A symmetrically distributed roller mounting frame (11) is provided above the fixing frame (1), a first stepper motor (12) is fixedly provided on one side of one of the roller mounting frames (11) by means of bolts, a reel (13) is fixedly provided after the rotating shaft of the first stepper motor (12) passes through the roller mounting frame (11), and a lifting rope (14) is wound inside the reel (13); A moving mechanism (3) is also provided at the bottom of the fixed frame (1), and the moving mechanism (3) comprises a base frame (31), three first rubber rollers (42) are provided on one side of the upper interior of the base frame (31), three second rubber rollers (421) are provided on the other side of the upper interior of the base frame (31), third rubber rollers (45) are rotatably connected to each other on both sides of the lower interior of the base frame (31), a fixedly connected ventilation hood (33) is also provided above the base frame (31), an altimeter is placed inside the ventilation hood (33), and symmetrically distributed cameras (34) are also provided above the base frame (31).

2. The device for measuring the depth of ground cracks in mining subsidence areas according to claim 1, characterized in that: The roller mounting frame (11) is fixedly connected to the fixing frame (1), a slot (15) is provided on the top of the fixing frame (1), the slot (15) is located between the roller mounting frames (11), a length scale is provided on the suspension rope (14), a fixedly connected hanging frame (16) is provided below the fixing frame (1), a first extension frame (19) is provided on one side of the interior of the fixing frame (1) and a second extension frame (20) is provided on the other side of the interior of the fixing frame (1); The first extension frame (19) and the second extension frame (20) are both provided with array-distributed plug holes (21), a slidingly connected plug (17) is also provided above the fixed frame (1), and a fixedly connected telescopic spring (18) is provided between the crown of the plug (17) and the fixed frame (1).

3. The device for measuring the depth of ground cracks in mining subsidence areas according to claim 1, characterized in that: Both sides of the base frame (31) are provided with protective covers (32) by means of bolts, the upper end of the base frame (31) is fixedly connected to one end of the suspension rope (14), and the cameras (34) are fixed to the base frame (31) by means of bolts.

4. The device for measuring the depth of surface cracks in mining subsidence areas according to claim 1, characterized in that: An electric push rod (35) is fixedly provided above the base frame (31) by means of bolts. The telescopic end of the electric push rod (35) passes through the base frame (31) and is fixedly provided with a mounting frame (36). A second stepping motor (37) is fixedly provided at the inner bottom of the mounting frame (36) by means of bolts. The rotating shaft of the second stepping motor (37) passes through the mounting frame (36) and is fixedly provided with a circular rotating plate (38).

5. The device for measuring the depth of surface cracks in mining subsidence areas according to claim 1, characterized in that: The first rubber roller (42) and the second rubber roller (421) are both rotatably connected to the base frame (31). A first pulley assembly (41) is also provided on the outer side of the base frame (31). The first pulley assembly (41) consists of two pulleys and a transmission belt. The shafts at both ends of the first rubber roller (42) pass through the base frame (31) and are fixedly connected to a pulley in the first pulley assembly (41). The shafts at both ends of the second rubber roller (421) pass through the base frame (31) and are also fixedly connected to a pulley in the first pulley assembly (41).

6. The device for measuring the depth of surface cracks in mining subsidence areas according to claim 1, characterized in that: An extension plate (39) is fixedly provided on one side of the base frame (31) by welding, a third stepper motor (40) is fixedly provided above the extension plate (39) by bolts, and a rotating shaft of the third stepper motor (40) is fixedly connected to a shaft at one end of the first rubber roller (42).

7. The device for measuring the depth of surface cracks in mining subsidence areas according to claim 1, characterized in that: The shaft at one end of one of the second rubber rollers (421) passes through the base frame (31) and is fixedly provided with a first rodless spur gear (43); a first rod-belted spur gear (44) is also provided on one side of the base frame (31); a rotating rod at one end of the first rod-belted spur gear (44) is inserted into the base frame (31) and is rotatably connected to the base frame (31); the first rod-belted spur gear (44) is meshed with the first rodless spur gear (43); The rotating rod at the other end of the first rod-belt spur gear (44) is fixedly connected to a pulley in the first pulley assembly (41), and the pulley in the other end of the first pulley assembly (41) on one side of the first rod-belt spur gear (44) is fixedly connected to the shaft at one end of the first rubber roller (42).

8. The device for measuring the depth of surface cracks in mining subsidence areas according to claim 1, characterized in that: One end of the third rubber roller (45) passes through the base frame (31) and is provided with a second pulley assembly (46), the second pulley assembly (46) also consists of two pulleys and a transmission belt, one of the third rubber rollers (45) is connected to one of the second rubber rollers (421) through the second pulley assembly (46), and the shaft at one end of the other third rubber roller (45) passes through the base frame (31) and is also fixedly connected to the pulley in the second pulley assembly (46), and a second spur gear (48) with a rod is fixedly provided inside the pulley at the other end of the second pulley assembly (46); The shaft at the other end of the second rod-carrying spur gear (48) is rotatably connected to the base frame (31), and the other end of one of the first rubber rollers (42) passes through the base frame (31) and is fixedly provided with a second rodless spur gear (47), and the second rodless spur gear (47) is meshed with the second rod-carrying spur gear (48).

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