Coal mine tunnel deformation measurement device and method

Abstract

The present invention discloses a coal mine tunnel deformation measurement device and method, which relates to the coal mine tunnel measurement technology field, including an annular bin, and a vertical positioning member located on the inner side of the annular bin is installed on the top of the supporting foot. The present invention sets a vertical positioning member, when the annular bin is placed, if the positioning tube is in an inclined state relative to the bottom plate, at this time, when the annular bin is placed, only one or two supporting feet are in contact with the tunnel bottom plate, so the warning light cannot be lit, when the bottoms of the three supporting feet are in contact with the tunnel, it means that the bottom of the annular bin and the tunnel bottom plate are in a parallel state, and when the annular bin is placed, the three supporting feet will move relative to the annular bin at the same time, and when the warning light is on, it means that the positioning tube and the bottom plate are in a vertical state, and then the electric telescopic rod can be started to measure the displacement of the top and bottom plates, so as to prevent the positioning tube and the bottom plate from being in an inclined state and affecting the accuracy of the measurement data.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine tunnel measurement, in particular to a coal mine tunnel deformation measurement device and method. Background Art

[0002] In the scientific research and safety monitoring work in the coal mining field, the tunnels arranged in the coal rock mass will inevitably deform during the excavation and advancement of the adjacent mining working face. Understanding the displacement changes of the tunnel roof and floor is of great significance for studying the impact of engineering disturbances, controlling surrounding rock deformation and disaster warning, and ensuring safe production.

[0003] When measuring the displacement change of the top and bottom plates of the tunnel, the staff needs to intermittently measure the same position of the tunnel for multiple times, and judge the displacement change of the top and bottom plates of the tunnel by calculating the data change of each measurement. However, when measuring the displacement of the top and bottom plates of the tunnel, the measuring rod and the bottom plate cannot be set vertically, which causes the accuracy of the measurement data to be affected by the tilt between the measuring rod and the bottom plate when measuring. At the same time, the measuring rod needs to be manually extended during measurement. Since measurements need to be made at different positions, this will lead to reduced measurement efficiency. At the same time, as the measuring rod is extended, the scale on the surface of the measuring rod will also rise, which will affect the reading. Summary of the invention

[0004] The purpose of the present invention is to provide a coal mine tunnel deformation measurement device and method in order to solve the problems of low measurement efficiency and poor measurement accuracy.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal mine tunnel deformation measuring device, comprising an annular bin, a first U-shaped frame is installed on the top of the annular bin, a positioning tube is installed on the top of the first U-shaped frame, an extension tube extending to the top of the positioning tube is inserted inside the positioning tube, a compensation sleeve is installed on the top of the extension tube, a battery is installed on the inner wall of the annular bin, a supporting foot penetrating to the bottom of the annular bin is inserted at the bottom of the annular bin, a vertical positioning member located on the inner side of the annular bin is installed on the top of the supporting foot, a second U-shaped frame located on one side of the first U-shaped frame is installed on the top of the annular bin, an electric telescopic rod located on the inner side of the second U-shaped frame is installed on the top of the annular bin, an output end of the electric telescopic rod is connected to an adaptive measuring member connected to the compensation sleeve, a winding bin is installed on the outer wall of the annular bin, a first side connecting plate is installed on the outer wall of the compensation sleeve, a tape measure extending to the outside of the winding bin and connected to the first side connecting plate is arranged inside the winding bin, and a counterweight unit is arranged on the outer side of the top of the annular bin.

[0006] As a further solution of the present invention: the number of the supporting feet is set to three, and the three supporting feet are distributed equidistantly along the center of the annular bin.

[0007] As a further solution of the present invention: the vertical positioning member includes a limiting clamping plate installed on the supporting foot and located below the annular bin, a connecting frame located on the inner side of the annular bin is installed on the top of the supporting foot, a shifting spur rack is installed on the top of the connecting frame, a rotating shaft is rotatably connected to the top of the inner wall of the annular bin through a bearing, the number of rotating shafts is equal to the supporting foot, a worm gear is installed at the bottom end of the rotating shaft, a first driven gear ring located above the worm gear is arranged on the rotating shaft, a worm meshing with the worm gear is arranged on the inner side of the annular bin, Both ends of the worm are equipped with shifting spur gears meshing with the shifting spur racks, the inner side of the annular warehouse is rotatably connected with a second driven gear ring meshing with the first driven gear ring through a bearing, a connecting block is provided on the annular warehouse, a warning light is installed on the top of the connecting block, a first static contact piece is installed on the inner wall of the connecting block, a second side connecting plate is installed on the supporting foot close to the plug rod, a plug rod extending to the inner side of the connecting block is installed on the top of the second side connecting plate, and a first moving contact piece located below the first static contact piece is installed on the top of the plug rod.

[0008] As a further solution of the present invention: the first moving contact piece is electrically connected to the battery through a wire, and the warning light is electrically connected to the first stationary contact piece through a wire.

[0009] As a further scheme of the present invention: the adaptive measuring part includes a water storage bucket installed on the top of the second U-shaped frame, the output end of the electric telescopic rod is connected to the piston plate located on the inner side of the water storage bucket, the top of the water storage bucket is connected to a normally open solenoid valve, one end of the normally open solenoid valve is provided with a first guide tube connected to the bottom of the positioning tube, the top of the water storage bucket is provided with a normally closed solenoid valve located on one side of the normally open solenoid valve, the top of the annular warehouse is provided with a connecting warehouse located on one side of the water storage bucket, one end of the normally closed solenoid valve is installed with a second guide tube extending to the inner side of the connecting warehouse, the top of the compensation sleeve is plugged with a ranging rod extending to the inner side of the compensation sleeve, the bottom of the ranging rod is provided with a second static contact piece located on the inner side of the compensation sleeve, the outer side of the ranging rod is provided with a reset spring connected to the inner wall of the compensation sleeve, and the inner wall of the compensation sleeve is installed with a second moving contact piece located below the second static contact piece.

[0010] As a further solution of the present invention: the second moving contact piece is electrically connected to the battery through a wire, and the second stationary contact piece is electrically connected to the normally open solenoid valve and the normally closed solenoid valve respectively through a wire.

[0011] As a further solution of the present invention: the counterweight unit includes an L-shaped connecting plate installed at the bottom of the piston plate and passing through the bottom of the water storage barrel, the side of the L-shaped connecting plate away from the electric telescopic rod is installed with an inclined guide rail, the top of the annular warehouse is fixed with a limiting sleeve, the limiting sleeve is plugged into a limiting bracket, the limiting bracket has a limiting column installed at one end close to the electric telescopic rod, the limiting column is slidably connected to the inner side of the inclined guide rail, and the end of the limiting bracket away from the limiting column is installed with a counterweight block.

[0012] As a further solution of the present invention: the horizontal height of one end of the inclined guide rail close to the electric telescopic rod is greater than the horizontal height of one end of the inclined guide rail away from the electric telescopic rod.

[0013] As a further solution of the present invention: the center of the positioning tube is coaxial with the center of the annular bin.

[0014] The present invention also discloses a method for measuring deformation of a coal mine tunnel, which uses the above-mentioned coal mine tunnel deformation measuring device and comprises the following steps:

[0015] S1: First, the annular bin is placed on the tunnel floor. During this process, the bottom of the annular bin is made parallel to the tunnel floor by means of a vertical positioning member, so that the positioning tube is placed vertically on the tunnel floor.

[0016] S2: Then, the electric telescopic rod is started to make the extension tube move upward relative to the positioning tube under the action of the adaptive measuring piece, so that the compensation sleeve is in contact with the tunnel roof. In this process, the first side connecting plate pulls the tape measure to measure the distance between the winding bin and the roof.

[0017] S3: Since the distance between the support foot and the winding bin is fixed, the distance between the winding bin and the top plate of the roadway plus the distance between the support foot and the winding bin is the distance between the bottom plate and the top plate;

[0018] S4: During the extension of the electric telescopic rod, the counterweight unit is used to balance the forces on both sides of the positioning tube.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting a vertical positioning piece, when the annular bin is placed, if the positioning tube is in an inclined state relative to the bottom plate, only one or two supporting feet will be in contact with the tunnel bottom plate when the annular bin is placed, and the warning light will not light up. When the bottoms of the three supporting feet are in contact with the tunnel, it means that the bottom of the annular bin is parallel to the tunnel bottom plate. When the annular bin is placed, the three supporting feet will move relative to the annular bin at the same time. When the warning light lights up, it means that the positioning tube and the bottom plate are in a vertical state. Then the electric telescopic rod can be started to measure the displacement of the top and bottom plates to prevent the positioning tube and the bottom plate from being in an inclined state and affecting the accuracy of the measurement data.

[0021] 2. By setting the adaptive measuring part, start the electric telescopic rod, and extend the electric telescopic rod to make the piston plate push the aqueous solution inside the water storage barrel, so that the extension tube moves upward relative to the positioning tube. When the top of the probe rod contacts the top plate of the tunnel, the second static contact piece contacts the second moving contact piece. At this time, the electric telescopic rod continues to extend, and the aqueous solution inside the water storage barrel enters the connection chamber through the normally closed solenoid valve and the second guide pipe. After that, the distance between the top and bottom plates of the tunnel can be calculated by observing the extension amount of the tape measure, so as to improve the measurement efficiency;

[0022] 3. By setting a counterweight unit, when the piston plate moves upward relative to the water storage barrel, the inclined guide rail will be driven to move upward through the L-shaped connecting plate, so that the inclined guide rail will squeeze the L-shaped connecting plate, so that the limit column moves away from the electric telescopic rod, so that the counterweight block can be close to the second U-shaped frame. As the aqueous solution inside the water storage barrel is discharged, the counterweight block will get closer and closer to the second U-shaped frame to achieve uniform force on both sides of the second U-shaped frame, thereby improving the stability of the placement of the annular warehouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the bottom structure of the annular bin of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the annular bin of the present invention;

[0026] Figure 4 It is a schematic diagram of the connection between the connecting block and the supporting foot of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection between the water storage barrel and the connection bin of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal structure of the water storage barrel of the present invention;

[0029] Figure 7It is a schematic diagram of the connection between the positioning tube and the extension tube of the present invention;

[0030] Figure 8 It is a schematic diagram of the internal structure of the filling sleeve of the present invention.

[0031] In the figure: 1, annular bin; 2, first U-shaped frame; 3, second U-shaped frame; 401, electric telescopic rod; 402, water storage bucket; 403, first guide pipe; 404, positioning pipe; 405, extension pipe; 406, filling sleeve; 407, range probe; 408, first side connecting plate; 409, measuring tape; 410, winding bin; 411, limiting sleeve; 412, connecting block; 413, limiting plug-in rack; 414, supporting foot; 415, inclined guide rail; 416, limiting column; 417, L-shaped connecting plate; 418, limiting card plate; 419, second side connecting plate; 420, plug-in rod ; 421, warning light; 422, battery; 423, worm; 424, shift spur gear; 425, shift spur rack; 426, connecting frame; 427, worm wheel; 428, first slave gear ring; 429, rotating shaft; 430, second slave gear ring; 431, first moving contact piece; 432, first stationary contact piece; 433, connecting chamber; 434, normally open solenoid valve; 435, normally closed solenoid valve; 436, second guide tube; 437, counterweight; 438, piston plate; 439, second moving contact piece; 440, second stationary contact piece; 441, return spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0034] See also Figures 1 to 8 In an embodiment of the present invention, a coal mine tunnel deformation measuring device includes an annular bin 1, a first U-shaped frame 2 is installed on the top of the annular bin 1, a positioning tube 404 is installed on the top of the first U-shaped frame 2, an extension tube 405 extending to the top of the positioning tube 404 is inserted inside the positioning tube 404, a compensation sleeve 406 is installed on the top of the extension tube 405, a battery 422 is installed on the inner wall of the annular bin 1, a support foot 414 penetrating to the bottom of the annular bin 1 is inserted at the bottom of the annular bin 1, a vertical positioning member located on the inner side of the annular bin 1 is installed on the top of the support foot 414, and the annular bin 1 is provided with a vertical positioning member. A second U-shaped frame 3 located on one side of the first U-shaped frame 2 is installed on the top of the annular warehouse 1, and an electric telescopic rod 401 located on the inner side of the second U-shaped frame 3 is installed on the top of the annular warehouse 1. The output end of the electric telescopic rod 401 is connected to an adaptive measuring piece connected to a positioning sleeve 406. A winding warehouse 410 is installed on the outer wall of the annular warehouse 1. A first side connecting plate 408 is installed on the outer wall of the positioning sleeve 406. A tape measure 409 extending to the outside of the winding warehouse 410 and connected to the first side connecting plate 408 is arranged inside the winding warehouse 410. A counterweight unit is arranged on the outer side of the top of the annular warehouse 1.

[0035] In this embodiment: first, the annular bin 1 is placed on the tunnel floor. During this process, the bottom of the annular bin 1 is parallel to the tunnel floor through the vertical positioning member, so that the positioning tube 404 is placed vertically on the tunnel floor. Then, the electric telescopic rod 401 is started to make the extension tube 405 move upward relative to the positioning tube 404 under the action of the adaptive measuring member, so that the compensation sleeve 406 is in contact with the tunnel roof. During this process, the first side connecting plate 408 pulls the tape measure 409 to measure the distance between the winding bin 410 and the roof. At the same time, since the distance between the supporting foot 414 and the winding bin 410 is fixed, the distance between the winding bin 410 and the tunnel roof plus the distance between the supporting foot 414 and the winding bin 410 is the distance between the bottom plate and the top plate. At the same time, during the extension of the electric telescopic rod 401, the counterweight unit is used to balance the forces on both sides of the positioning tube 404.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 The number of the supporting feet 414 is three, and the three supporting feet 414 are distributed at equal distances along the center of the annular warehouse 1.

[0037] In this embodiment: this structure is provided to improve the stability of the support legs 414 supporting the annular bin 1 .

[0038] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The vertical positioning member includes a limit card plate 418 installed on the support foot 414 and located below the annular warehouse 1. A connecting frame 426 located on the inner side of the annular warehouse 1 is installed on the top of the support foot 414. A shifting spur rack 425 is installed on the top of the connecting frame 426. A rotating shaft 429 is rotatably connected to the top of the inner wall of the annular warehouse 1 through a bearing. The number of rotating shafts 429 is equal to that of the support foot 414. A worm gear 427 is installed at the bottom end of the rotating shaft 429. A first driven gear ring 428 located above the worm gear 427 is arranged on the rotating shaft 429. A worm 423 meshing with the worm gear 427 is arranged on the inner side of the annular warehouse 1. Both ends of the worm 423 are installed There is a shifting spur gear 424 meshing with the shifting spur rack 425, and the inner side of the annular warehouse 1 is rotatably connected to a second slave gear ring 430 meshing with the first slave gear ring 428 through a bearing, and a connecting block 412 is provided on the annular warehouse 1, and a warning light 421 is installed on the top of the connecting block 412, and a first static contact piece 432 is installed on the inner wall of the connecting block 412, and a second side connecting plate 419 is installed on the supporting foot 414 close to the insertion rod 420, and a plug rod 420 extending to the inner side of the connecting block 412 is installed on the top of the second side connecting plate 419, and a first moving contact piece 431 located below the first static contact piece 432 is installed on the top of the plug rod 420.

[0039] In this embodiment: when the annular bin 1 is placed, if the positioning tube 404 is in an inclined state relative to the bottom plate, only one or two supporting feet 414 are in contact with the bottom plate of the tunnel when the annular bin 1 is placed. At this time, due to the locking of the worm gear 427 by the worm 423 above the supporting feet 414 that are not in contact with the bottom plate, the second driven gear ring 430 cannot rotate relative to the annular bin 1, so the warning light 421 cannot light up. When the bottoms of the three supporting feet 414 are in contact with the tunnel, it means that the bottom of the annular bin 1 is parallel to the bottom plate of the tunnel. At this time, when the annular bin 1 is placed, the three supporting feet 414 will move relative to the annular bin 1 at the same time, and the spur rack will be shifted at this time. 425 will toggle the shifting spur gear 424, so that the worm 423 drives the worm wheel 427 to rotate, thereby causing the rotating shaft 429 to drive the second driven gear ring 430 to rotate, and when the supporting foot 414 moves relative to the annular warehouse 1, the plug rod 420 drives the first moving contact piece 431 to move upward, so that the first moving contact piece 431 contacts the first static contact piece 432, so that the warning light 421 is powered on and lights up. When the warning light 421 lights up, it means that the positioning tube 404 and the bottom plate are in a vertical state at this time, and then the electric telescopic rod 401 can be started to measure the displacement of the top and bottom plates to prevent the accuracy of the measurement data from being affected by the tilted state of the positioning tube 404 and the bottom plate.

[0040] Please refer to Figure 3 , Figure 4 The first moving contact piece 431 is electrically connected to the battery 422 through a wire, and the warning light 421 is electrically connected to the first stationary contact piece 432 through a wire.

[0041] In this embodiment, by providing this structure, the warning light 421 is powered on and lights up when the first movable contact piece 431 contacts the first stationary contact piece 432 , thereby controlling the operation timing of the warning light 421 .

[0042] Please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8The adaptive measuring part includes a water storage barrel 402 installed on the top of the second U-shaped frame 3, the output end of the electric telescopic rod 401 is connected to a piston plate 438 located inside the water storage barrel 402, the top of the water storage barrel 402 is connected to a normally open solenoid valve 434, one end of the normally open solenoid valve 434 is provided with a first guide pipe 403 connected to the bottom of the positioning pipe 404, the top of the water storage barrel 402 is provided with a normally closed solenoid valve 435 located on one side of the normally open solenoid valve 434, and the top of the annular warehouse 1 is provided with a valve located on the water storage barrel 402. A connecting chamber 433 is provided on one side, and a second flow guide tube 436 extending to the inner side of the connecting chamber 433 is installed at one end of the normally closed solenoid valve 435. A detection rod 407 extending to the inner side of the detection sleeve 406 is inserted at the top of the compensation sleeve 406, and a second static contact piece 440 located inside the compensation sleeve 406 is provided at the bottom of the detection rod 407. A reset spring 441 connected to the inner wall of the compensation sleeve 406 is provided on the outer side of the detection rod 407, and a second moving contact piece 439 located below the second static contact piece 440 is installed on the inner wall of the compensation sleeve 406.

[0043] In this embodiment: the electric telescopic rod 401 is started, and the piston plate 438 pushes the aqueous solution inside the water storage barrel 402 through the extension of the electric telescopic rod 401, so that the aqueous solution inside the water storage barrel 402 enters the interior of the positioning tube 404 through the normally open electromagnetic valve 434 and the first guide tube 403, so that the extension tube 405 moves upward relative to the positioning tube 404, and as the extension tube 405 drives the displacement sleeve 406 to move upward, when the top of the range finding rod 407 contacts the tunnel roof, the range finding rod 407 will retract into the displacement sleeve 406 as the extension tube 405 moves upward, so that the second static contact piece 440 contacts the second moving contact piece 439, and at this time, the normally open electromagnetic valve 434 is energized to close, and at the same time, the normally closed electromagnetic valve 435 is energized to open, so that the extension tube 405 stops moving. The electric telescopic rod 401 stops moving upward. At this time, the electric telescopic rod 401 continues to extend, and the aqueous solution inside the water storage barrel 402 enters the connecting chamber 433 through the normally closed electromagnetic valve 435 and the second guide pipe 436. Then, the distance between the top and bottom plates of the tunnel can be calculated by observing the extension amount of the tape measure 409, so as to improve the measurement efficiency. After the measurement is completed, the electric telescopic rod 401 is retracted. At this time, the aqueous solution inside the connecting chamber 433 will be drawn into the water storage barrel 402 under the action of the piston plate 438, and then the water storage barrel 402 is tilted. At this time, the second static contact piece 440 is separated from the second moving contact piece 439, and the normally open electromagnetic valve 434 is opened. The electric telescopic rod 401 continues to retract to draw the aqueous solution inside the positioning tube 404 into the water storage barrel 402, and then the top and bottom plates at other positions of the tunnel can be measured.

[0044] Please refer to Figure 3 , Figure 5 , Figure 8The second moving contact piece 439 is electrically connected to the battery 422 through a wire, and the second stationary contact piece 440 is electrically connected to the normally open electromagnetic valve 434 and the normally closed electromagnetic valve 435 through wires.

[0045] In this embodiment: by setting this structure, when the second moving contact piece 439 contacts the second stationary contact piece 440, the normally open solenoid valve 434 and the normally closed solenoid valve 435 are energized, thereby controlling the opening and closing of the normally open solenoid valve 434 and the normally closed solenoid valve 435.

[0046] Please refer to Figure 1 , Figure 5 , Figure 6 The counterweight unit includes an L-shaped connecting plate 417 installed at the bottom of the piston plate 438 and passing through the bottom of the water storage barrel 402. An inclined guide rail 415 is installed on the side of the L-shaped connecting plate 417 away from the electric telescopic rod 401. A limiting sleeve 411 is fixed to the top of the annular warehouse 1. A limiting bracket 413 is inserted on the limiting sleeve 411. A limiting column 416 is installed at one end of the limiting bracket 413 close to the electric telescopic rod 401. The limiting column 416 is slidably connected to the inner side of the inclined guide rail 415, and a counterweight block 437 is installed at one end of the limiting bracket 413 away from the limiting column 416.

[0047] In this embodiment: when the piston plate 438 moves upward relative to the water storage barrel 402, the inclined guide rail 415 will be driven to move upward through the L-shaped connecting plate 417, so that the inclined guide rail 415 squeezes the L-shaped connecting plate 417, so that the limit column 416 moves in a direction away from the electric telescopic rod 401, so that the counterweight block 437 can be close to the second U-shaped frame 3. As the aqueous solution inside the water storage barrel 402 is discharged, the counterweight block 437 will get closer and closer to the second U-shaped frame 3, so as to achieve uniformity of force on both sides of the second U-shaped frame 3, thereby improving the stability of the placement of the annular warehouse 1.

[0048] Please refer to Figure 6 The horizontal height of one end of the inclined guide rail 415 close to the electric telescopic rod 401 is greater than the horizontal height of one end of the inclined guide rail 415 away from the electric telescopic rod 401.

[0049] In this embodiment, by providing this structure, when the inclined guide rail 415 moves upward, the limit column 416 moves in a direction away from the electric telescopic rod 401 , thereby achieving the movement of the counterweight block 437 .

[0050] Please refer to Figure 1 The center of the positioning tube 404 is coaxial with the center of the annular warehouse 1.

[0051] In this embodiment: by providing this structure, the top of the annular bin 1 is subjected to uniform force, so that the annular bin 1 is tilted when the extension tube 405 is placed and extended.

[0052] In combination with the above-mentioned coal mine tunnel deformation measurement device, a coal mine tunnel deformation measurement method is provided below, which specifically includes the following steps:

[0053] S1: First place the annular bin 1 on the tunnel floor. If the positioning tube 404 is in an inclined state relative to the floor, only one or two supporting feet 414 will be in contact with the tunnel floor when the annular bin 1 is placed. At this time, due to the locking of the worm 423 on the supporting feet 414 that are not in contact with the floor, the second driven gear ring 430 cannot rotate relative to the annular bin 1, so the warning light 421 cannot light up. When the bottoms of the three supporting feet 414 are in contact with the tunnel, it means that the bottom of the annular bin 1 is parallel to the tunnel floor. At this time, when the annular bin 1 is placed, the three supporting feet 414 will move relative to the annular bin 1 at the same time. At this time, the spur rack is shifted. 425 will toggle the shifting spur gear 424, so that the worm 423 drives the worm wheel 427 to rotate, so that the rotating shaft 429 drives the second driven gear ring 430 to rotate, and when the supporting foot 414 moves relative to the annular bin 1, the plug rod 420 drives the first moving contact piece 431 to move upward, so that the first moving contact piece 431 contacts the first static contact piece 432, so that the warning light 421 is powered on and lights up. When the warning light 421 lights up, it means that the positioning tube 404 and the bottom plate are in a vertical state at this time, and then the electric telescopic rod 401 can be started to measure the displacement of the top and bottom plates to prevent the positioning tube 404 and the bottom plate from being in a tilted state and affecting the accuracy of the measurement data;

[0054] S2: Start the electric telescopic rod 401, and extend the electric telescopic rod 401 to make the piston plate 438 push the aqueous solution inside the water storage barrel 402, so that the aqueous solution inside the water storage barrel 402 enters the interior of the positioning tube 404 through the normally open electromagnetic valve 434 and the first guide tube 403, so that the extension tube 405 moves upward relative to the positioning tube 404. As the extension tube 405 drives the positioning sleeve 406 to move upward, when the top of the range probe 407 contacts the top plate of the tunnel, the range probe 407 moves upward with the extension tube 405. The electric telescopic rod 401 is retracted into the compensation sleeve 406, so that the second static contact piece 440 is in contact with the second moving contact piece 439. At this time, the normally open electromagnetic valve 434 is powered on and closed, and the normally closed electromagnetic valve 435 is powered on and opened, so that the extension tube 405 stops moving upward. At this time, the electric telescopic rod 401 continues to extend, and the aqueous solution inside the water storage barrel 402 passes through the normally closed electromagnetic valve 435 and the second guide tube 436 into the connecting chamber 433. After that, the distance between the top and bottom plates of the tunnel can be calculated by observing the extension amount of the tape measure 409, so as to improve the measurement efficiency;

[0055] S3: When the piston plate 438 moves upward relative to the water storage barrel 402, the inclined guide rail 415 is driven to move upward through the L-shaped connecting plate 417, so that the inclined guide rail 415 squeezes the L-shaped connecting plate 417, so that the limit column 416 moves away from the electric telescopic rod 401, so that the counterweight block 437 is close to the second U-shaped frame 3. As the aqueous solution in the water storage barrel 402 is discharged, the counterweight block 437 will get closer and closer to the second U-shaped frame 3 to achieve uniform force on both sides of the second U-shaped frame 3, thereby improving the stability of the placement of the annular warehouse 1;

[0056] S4: After the measurement is completed, the electric telescopic rod 401 is retracted. At this time, the aqueous solution inside the connecting chamber 433 will be pumped into the water storage barrel 402 under the action of the piston plate 438. Then the water storage barrel 402 is tilted. At this time, the second static contact piece 440 and the second moving contact piece 439 are separated, and the normally open solenoid valve 434 is opened. The electric telescopic rod 401 continues to retract to pump the aqueous solution inside the positioning tube 404 into the water storage barrel 402. Then the top and bottom plates of the remaining positions of the tunnel can be measured.

[0057] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine tunnel deformation measurement device, comprising an annular bin (1), characterized in that: A first U-shaped frame (2) is installed on the top of the annular bin (1), a positioning tube (404) is installed on the top of the first U-shaped frame (2), an extension tube (405) extending to the top of the positioning tube (404) is inserted into the interior of the positioning tube (404), a replacement sleeve (406) is installed on the top of the extension tube (405), a storage battery (422) is installed on the inner wall of the annular bin (1), a supporting foot (414) extending to the bottom of the annular bin (1) is inserted into the bottom of the annular bin (1), a vertical positioning member located on the inner side of the annular bin (1) is installed on the top of the supporting foot (414), and a positioning member located on the inner side of the annular bin (1) is installed on the top of the annular bin (1). a second U-shaped frame (3) on one side of the first U-shaped frame (2); an electric telescopic rod (401) located inside the second U-shaped frame (3) is installed on the top of the annular bin (1); an output end of the electric telescopic rod (401) is connected to an adaptive measuring piece connected to a positioning sleeve (406); a winding bin (410) is installed on the outer wall of the annular bin (1); a first side connecting plate (408) is installed on the outer wall of the positioning sleeve (406); a measuring tape (409) extending to the outside of the winding bin (410) and connected to the first side connecting plate (408) is arranged inside the winding bin (410); and a counterweight unit is arranged on the outer side of the top of the annular bin (1); The vertical positioning member comprises a limiting clamping plate (418) mounted on a supporting foot (414) and located below the annular bin (1); a connecting frame (426) located inside the annular bin (1) is mounted on the top of the supporting foot (414); a shifting spur rack (425) is mounted on the top of the connecting frame (426); a rotating shaft (429) is rotatably connected to the top of the inner wall of the annular bin (1) via a bearing; the number of the rotating shafts (429) is equal to that of the supporting foot (414); a worm wheel (427) is mounted on the bottom end of the rotating shaft (429); a first driven gear ring (428) located above the worm wheel (427) is arranged on the rotating shaft (429); a worm (423) meshing with the worm wheel (427) is arranged on the inner side of the annular bin (1); both ends of the worm (423) are connected to the rotating shaft (429); A shifting spur gear (424) meshing with a shifting spur rack (425) is installed; a second driven gear ring (430) meshing with a first driven gear ring (428) is rotatably connected to the inner side of the annular bin (1) via a bearing; a connecting block (412) is provided on the annular bin (1); a warning light (421) is installed on the top of the connecting block (412); a first static contact piece (432) is installed on the inner wall of the connecting block (412); a second side connecting plate (419) is installed on the supporting foot (414) close to the plug rod (420); a plug rod (420) extending to the inner side of the connecting block (412) is installed on the top of the second side connecting plate (419); and a first moving contact piece (431) located below the first static contact piece (432) is installed on the top of the plug rod (420).

2. A coal mine tunnel deformation measuring device according to claim 1, characterized in that: The number of the supporting feet (414) is three, and the three supporting feet (414) are distributed at equal distances along the center of the annular bin (1).

3. A coal mine tunnel deformation measuring device according to claim 1, characterized in that: The first moving contact piece (431) is electrically connected to the battery (422) via a wire, and the warning light (421) is electrically connected to the first stationary contact piece (432) via a wire.

4. A coal mine tunnel deformation measuring device according to claim 3, characterized in that: The adaptive measuring component comprises a water storage barrel (402) mounted on the top of the second U-shaped frame (3); the output end of the electric telescopic rod (401) is connected to a piston plate (438) located inside the water storage barrel (402); the top end of the water storage barrel (402) is connected to a normally open electromagnetic valve (434); one end of the normally open electromagnetic valve (434) is provided with a first flow guide pipe (403) connected to the bottom of the positioning pipe (404); the top of the water storage barrel (402) is provided with a normally closed electromagnetic valve (435) located on one side of the normally open electromagnetic valve (434); the top of the annular bin (1) is provided with a first flow guide pipe (403) located on one side of the water storage barrel (402); A connecting chamber (433) is provided on one end of the normally closed solenoid valve (435), a second flow guide tube (436) extending to the inner side of the connecting chamber (433) is installed, a detection rod (407) extending to the inner side of the detection sleeve (406) is inserted at the top of the compensation sleeve (406), a second static contact piece (440) located inside the compensation sleeve (406) is provided at the bottom of the detection rod (407), a return spring (441) connected to the inner wall of the compensation sleeve (406) is provided on the outer side of the detection rod (407), and a second moving contact piece (439) located below the second static contact piece (440) is installed on the inner wall of the compensation sleeve (406).

5. A coal mine tunnel deformation measuring device according to claim 4, characterized in that: The second moving contact piece (439) is electrically connected to the battery (422) via a wire, and the second stationary contact piece (440) is electrically connected to the normally open electromagnetic valve (434) and the normally closed electromagnetic valve (435) via wires.

6. A coal mine tunnel deformation measuring device according to claim 5, characterized in that: The counterweight unit comprises an L-shaped connecting plate (417) installed at the bottom of the piston plate (438) and penetrating below the water storage barrel (402); an inclined guide rail (415) is installed on the side of the L-shaped connecting plate (417) away from the electric telescopic rod (401); a limiting sleeve (411) is fixed on the top of the annular bin (1); a limiting bracket (413) is plugged into the limiting sleeve (411); a limiting column (416) is installed at one end of the limiting bracket (413) close to the electric telescopic rod (401); the limiting column (416) is slidably connected to the inner side of the inclined guide rail (415); and a counterweight block (437) is installed at one end of the limiting bracket (413) away from the limiting column (416).

7. A coal mine tunnel deformation measuring device according to claim 6, characterized in that: The horizontal height of one end of the inclined guide rail (415) close to the electric telescopic rod (401) is greater than the horizontal height of one end of the inclined guide rail (415) away from the electric telescopic rod (401).

8. A coal mine tunnel deformation measuring device according to claim 7, characterized in that: The center of the positioning tube (404) is coaxial with the center of the annular bin (1).

9. A method for measuring deformation of a coal mine tunnel, characterized in that: A coal mine tunnel deformation measuring device according to any one of claims 1 to 8 is used, comprising the following steps: S1: firstly placing the annular bin (1) on the tunnel floor, during which the bottom of the annular bin (1) is parallel to the tunnel floor by means of a vertical positioning member, so that the positioning tube (404) is vertically placed on the tunnel floor; S2: Then, the electric telescopic rod (401) is activated to cause the extension tube (405) to move upward relative to the positioning tube (404) under the action of the adaptive measuring member, so that the compensation sleeve (406) is in contact with the tunnel roof. In this process, the first side connecting plate (408) pulls the measuring tape (409) to measure the distance between the winding bin (410) and the roof; S3: Since the distance between the support foot (414) and the winding bin (410) is fixed, the distance between the winding bin (410) and the top plate of the lane plus the distance between the support foot (414) and the winding bin (410) is the distance between the bottom plate and the top plate; S4: During the extension of the electric telescopic rod (401), the forces on both sides of the positioning tube (404) are balanced by using the counterweight unit.

Images