Underground water level monitoring equipment for coal mine goaf

Abstract

The utility model relates to the technical field of water level monitoring, in particular to coal mine goaf underground water level monitoring equipment which comprises a stand column, a sliding block, a tensioning assembly, a driving assembly, a winding assembly and a pressure sensor. The top end of the stand column is provided with a power box, and the stand column is provided with a through hole and a plurality of sets of cross arms. The sliding blocks are in sliding connection with the cross arm and rotationally connected with the connecting rods, and the connecting rods are rotationally connected with the same sliding frame at the same time. The tensioning assembly is elastically connected with the cross arm and the sliding block. The driving assembly is connected with the stand column and drives the sliding frame to slide. The winding assembly is arranged in the power box, the winding assembly is in driving connection with a cable, the cable penetrates through the through hole and is connected with the liquid level transmitter, and the bottom of the liquid level transmitter is in sliding connection with a balancing weight. The pressure sensor is connected with the liquid level transmitter and the balancing weight, the pressure sensor is electrically connected with the controller, and the controller is electrically connected with the winding assembly. The folding and unfolding device is convenient to fold and unfold and high in stability, and meanwhile, the folding and unfolding device is provided with a cable folding and unfolding and detecting structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to water level monitoring technical field especially relates to a coal mine goaf underground water level monitoring equipment. BACKGROUND

[0002] The coal mine goaf refers to the cavity or cavity left after the underground coal or coal gangue is mined in the coal mining process. The goaf often causes harm to the normal production of the coal mine in the coal mining process. The coal mine goaf is prone to water accumulation. In order to control the water level of the coal mine goaf in real time, the underground water level of the coal mine goaf needs to be monitored by the corresponding underground water level monitoring equipment.

[0003] The technical solution disclosed by Chinese patent with authorization announcement No. CN221571599U can limit the liquid level transmitter body and the control line when monitoring the underground water level, ensure the stability when the liquid level transmitter body is put in and taken out, avoid contact between the liquid level transmitter body and the monitoring hole during the process of putting in and taking out, prevent the liquid level transmitter body and the control line from being worn, and improve the overall service life.

[0004] However, the device still has the following problems: the device is relatively troublesome to operate when being folded and unfolded, fixed and disassembled, and it is difficult to lower the detection equipment from the center of the wellhead. The detection equipment is prone to bumping during the lowering process, and the device needs to be matched with a winch to complete the operation, so the integration degree is low. UTILITY MODEL CONTENT

[0005] The utility model aims at the problems in the background art and provides a coal mine goaf underground water level monitoring equipment.

[0006] The technical scheme of the utility model: a coal mine goaf underground water level monitoring equipment, including a stand, a power box is arranged at the top end of the stand, a through hole is arranged on the stand, a plurality of groups of horizontal arms in rotational connection with the stand are arranged in a ring array around the shaft center of the stand, and the maximum turning angle of the horizontal arms is ninety degrees.

[0007] Sliding blocks, the top end of each group of sliding blocks is slidingly connected with the horizontal arm on the corresponding side, the sliding blocks are rotationally connected with connecting rods, and each group of connecting rods is simultaneously rotationally connected with a same sliding frame, and the sliding frame is slidingly connected with the stand.

[0008] Tensioning assemblies, the tensioning assemblies are elastically connected with the horizontal arms on the corresponding side and the ends of the sliding blocks away from the stand.

[0009] A driving assembly, the driving assembly is connected with the stand and drives the sliding frame to slide along the radial direction of the stand.

[0010] A winding assembly is arranged in the power box, the winding assembly is drivingly connected with the cable, the cable penetrates through the through hole and is connected with the liquid level transmitter, and the bottom of the liquid level transmitter is slidingly connected with the counterweight.

[0011] A pressure sensor is connected with the liquid level transmitter and the counterweight, and the pressure sensor is electrically connected with the controller, and the controller is electrically connected with the winding assembly.

[0012] Preferably, the bottom of the column is connected with the lower support plate, the top of the column is provided with the upper limiting plate, and a plurality of groups of ear plates connected with the column are arranged in an annular array around the axial center of the column, and the top end of the ear plate abuts against the upper limiting plate.

[0013] Preferably, the outside of the column is provided with two guide rods, the two ends of the guide rod are connected with the side of the lower support plate and the upper limiting plate which are close to each other, and the guide rod penetrates through the sliding frame and is slidingly connected with the sliding frame.

[0014] Preferably, the driving assembly comprises a lead screw, a toothed belt and a motor, the number of the lead screw is two, the two lead screws are parallel to the guide rods, the two ends of the lead screw are rotatably connected with the lower support plate and the upper limiting plate respectively, the two lead screws penetrate through the sliding frame and are screw-connected with the sliding frame, the two lead screws are coaxially rotatably connected with a belt pulley respectively, and the two belt pulleys are drivingly connected through the toothed belt.

[0015] Preferably, the tensioning assembly comprises a spring, the cross arm is provided with a sliding groove, the top end of the sliding block is inserted into the sliding groove on the corresponding side and is slidingly connected with the inner wall of the sliding groove, a sliding rod is arranged in the sliding groove, the sliding rod penetrates through the sliding block and is slidingly connected with the sliding block, the spring is sleeved on the sliding rod, and the two ends of the sliding rod abut against the side of the sliding groove away from the column and the side of the sliding block away from the column respectively.

[0016] Preferably, a guide frame is arranged in the power box, a threading hole is arranged on the guide frame, the threading hole is coaxial with the through hole, two guide wheels rotatably connected with the threading hole are symmetrically arranged about the axial center of the threading hole, and the cable is located between the two guide wheels.

[0017] Preferably, a touch screen is arranged on the power box, a battery pack is arranged in the power box, and the battery pack and the power-consuming devices are electrically connected. A photovoltaic panel is arranged on the side of the cross arm away from the sliding block, and the photovoltaic panel is electrically connected with the battery pack.

[0018] Compared with the prior art, the utility model has the beneficial technical effects that:

[0019] Through setting the cooperation structure of the stand column, the cross arm, the connecting rod, the slide, the tensioning assembly and the driving assembly, the cross arm can be directly opened, and the device is fixed by the synchronous sliding block away from the inner wall of the well mouth, when the device is fixed, the stand column is in the center position of the well hole, the liquid level transmitter is effectively avoided from touching the inner wall of the well when being lowered, and the device integrates the winch structure, and each equipment can independently complete the water level monitoring task. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of one embodiment in the utility model;

[0021] Figure 2 It is a structure schematic view of the utility model after being inverted;

[0022] Figure 3 It is a connection structure schematic view of the slide and the driving assembly and the sliding block;

[0023] Figure 4 It is an internal structure schematic view of the stand column and the power box.

[0024] Sign significance: 1, stand column, 101, lower support plate, 102, upper limit plate, 103, storage groove, 104, through hole, 2, power box, 201, touch screen, 3, ear plate, 4, cross arm, 41, sliding groove, 5, photovoltaic panel, 6, sliding rod, 7, sliding block, 8, spring, 9, connecting rod, 10, slide, 11, lead screw, 12, motor, 13, guide frame, 14, guide wheel, 15, winch, 16, cable, 17, liquid level transmitter, 18, pressure sensor, 19, counterweight. DETAILED DESCRIPTION

[0025] Example one

[0026] As Figures 1-4As shown, the utility model provides a kind of coal mine goaf underground water level monitoring equipment, including stand 1, sliding block 7, tensioning assembly, drive assembly, winding assembly and pressure sensor 18.The bottom of stand 1 is connected with lower support plate 101, the top of stand 1 is provided with upper limit plate 102, the top end of stand 1 is provided with power box 2, and pull handle is provided on power box 2.Stand 1 is provided with a plurality of groups of ear plates 3 connected thereto around its axis in annular array, and the top end of ear plate 3 abuts with upper limit plate 102.The end of stand 1 away from power box 2 is provided with receiving groove 103, and through hole 104 is provided on stand 1 and communicated with receiving groove 103, and a plurality of groups of cross arms 4 are rotatably connected to stand 1 around its axis in annular array, and the maximum turning angle of cross arm 4 is ninety degrees.The top end of each group of sliding block 7 is slidably connected with corresponding side cross arm 4, and sliding block 7 is rotatably connected with connecting rod 9, and each group of connecting rod 9 is rotatably connected with the same slide 10, and slide 10 is slidably connected with stand 1.Two guide rods are provided outside stand 1, and the two ends of guide rod are connected with the side of lower support plate 101 and upper limit plate 102 close to each other, and guide rod penetrates slide 10 and is slidably connected therewith.Tensioning assembly includes spring 8.Cross arm 4 is provided with sliding groove 41, the top end of sliding block 7 is inserted into corresponding side sliding groove 41 and is slidably connected with the inner wall thereof, sliding rod 6 is provided in sliding groove 41, sliding rod 6 penetrates sliding block 7 and is slidably connected therewith, spring 8 is sleeved on sliding rod 6, and the two ends of sliding rod 6 are respectively abutted with the side of sliding groove 41 away from stand 1 and the side of sliding block 7 away from stand 1.The drive assembly includes lead screw 11, toothed belt and motor 12, the number of lead screw 11 is two, two lead screws 11 are parallel to guide rod, and the two ends of lead screw 11 are rotatably connected with lower support plate 101 and upper limit plate 102, two lead screws 11 penetrate slide 10 and are spirally connected therewith, and two lead screws 11 are coaxially rotatably connected with a pulley respectively, and two pulleys are drivingly connected through toothed belt.The body of motor 12 is arranged in power box 2, and the output end of motor 12 is coaxially connected with the end of one of lead screw 11.Winding assembly includes but is not limited to winch 15, winch 15 is arranged in power box 2, winch 15 is drivingly connected with cable 16, cable 16 penetrates through hole 104 and is connected with liquid level transmitter 17, and the bottom of liquid level transmitter 17 is slidably connected with counterweight 19.Pressure sensor 18 is connected with liquid level transmitter 17 and counterweight 19, and pressure sensor 18 is electrically connected with controller, controller is electrically connected with winding assembly, and the outer diameter of pressure sensor 18 is not greater than the inner diameter of receiving groove 103.

[0027] In the embodiment, the hand-held lifting handle is used to move the device to the well mouth, the motor 12 is started, the motor 12 drives the rotation of the lead screw 11, the lead screws 11 on both sides are synchronously rotated under the transmission of the pulley and the toothed belt, and then the carriage 10 is stably slid, the opening of all the cross arms 4 is realized through the connecting rod 9 and the sliding block 7 in the sliding process of the carriage 10, the column 1 is inserted into the well after the cross arms 4 are completely opened, all the cross arms 4 are arranged on the well platform, then the motor 12 is continuously started, the motor 12 continuously drives the sliding of the carriage 10, at this time, the sliding block 7 is driven to slide relative to the cross arm 4 and press the spring 8, all the sliding blocks 7 are synchronously slid towards the inner wall of the well until abutting against the inner wall of the well, then the winch 15 is started, the winch 15 releases the cable 16, the liquid level transmitter 17 is slid out of the storage groove 103, the liquid level transmitter 17 gradually enters the water in the manner that the counterweight 19 faces downward, when the counterweight 19 lands, the pressure sensor 18 detects the pressure signal, at this time, the winch 15 stops releasing the cable, and the liquid level transmitter 17 transmits the detected water level data to the control terminal in real time.

[0028] Embodiment two

[0029] As shown in Figure 4 , compared with embodiment one, the coal mine goaf underground water level monitoring device provided by the utility model is characterized in that a guide frame 13 is arranged in the power box 2, a threading hole is arranged on the guide frame 13, the threading hole is coaxial with the through hole 104, two guide wheels 14 that are rotationally connected with the threading hole are symmetrically arranged about the axis of the threading hole, and the cable 16 is located between the two guide wheels 14.

[0030] In the embodiment, the rotation of the guide wheel 14 is used to guide the winding and unwinding of the cable, direct frictional contact between the cable surface and the edge of the hole is prevented, and the wear of the cable surface or even the breakage of the cable is avoided.

[0031] Embodiment three

[0032] As shown in Figure 1 and Figure 2 , compared with embodiment one, the coal mine goaf underground water level monitoring device provided by the utility model is characterized in that a touch screen 201, a wireless module and an alarm are arranged on the power box 2, the wireless module includes but is not limited to a mobile communication module, the alarm includes but is not limited to an audible and visual alarm, a storage battery pack is arranged in the power box 2, the storage battery pack is electrically connected with the power consumption devices, and a photovoltaic panel 5 is arranged on the side of the cross arm 4 away from the sliding block 7.

[0033] In the embodiment, the utility model uses photovoltaic power generation to supply power and work in remote or inconvenient power supply areas, reduces the condition limitation of the device, the detection result is sent to the data terminal through the wireless communication module, and the alarm is started when the liquid level is lower than the alarm value.

[0034] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to this, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A groundwater level monitoring device for coal mine goaf areas, characterized in that, include A column (1) is provided with a power box (2) at the top of the column (1), and a through hole (104) is provided on the column (1). Several sets of horizontal arms (4) are arranged in a ring array around the axis of the column (1) and are rotatably connected to it. The maximum rotation angle of the horizontal arm (4) is ninety degrees. The top of each slider (7) is slidably connected to the corresponding side of the horizontal arm (4). The slider (7) is rotated to connect the connecting rod (9). Each connecting rod (9) is simultaneously rotated to connect to the same slide (10). The slide (10) is slidably connected to the column (1). The tensioning assembly is elastically connected to the cross arm (4) on the corresponding side and the end of the slider (7) away from the column (1); A drive assembly is connected to the column (1) and drives the carriage (10) to slide radially along the column (1); The winding assembly is located inside the power box (2). The winding assembly drives the connecting cable (16). The cable (16) passes through the through hole (104) and connects to the level transmitter (17). The bottom of the level transmitter (17) is slidably connected to the counterweight block (19). And a pressure sensor (18), which is connected to a level transmitter (17) and a counterweight (19), and the pressure sensor (18) is electrically connected to a controller, which is electrically connected to a winding assembly.

2. The groundwater level monitoring device for coal mine goaf areas according to claim 1, characterized in that, The bottom of the column (1) is connected to the lower support plate (101), the top of the column (1) is provided with the upper limit plate (102), and several sets of ear plates (3) connected to it are arranged in a ring array around its axis on the column (1), and the top of the ear plate (3) abuts against the upper limit plate (102).

3. The groundwater level monitoring device for coal mine goaf areas according to claim 2, characterized in that, Two guide rods are provided on the outside of the column (1). The two ends of the guide rods are connected to the lower support plate (101) and the upper limit plate (102) respectively on the side close to each other. The guide rods pass through the slide (10) and are slidably connected to it.

4. The groundwater level monitoring device for coal mine goaf areas according to claim 3, characterized in that, The drive assembly includes a lead screw (11), a toothed belt, and a motor (12). There are two lead screws (11), both of which are parallel to the guide rod. The two ends of the lead screws (11) are rotatably connected to the lower support plate (101) and the upper limit plate (102), respectively. Both lead screws (11) pass through the carriage (10) and are helically connected to it. Both lead screws (11) are coaxially rotatably connected to a pulley, and the pulleys are connected by toothed belt drive. The motor (12) is located inside the power box (2), and the output end of the motor (12) is coaxially connected to the end of one of the lead screws (11).

5. A groundwater level monitoring device for coal mine goaf areas according to claim 1, characterized in that, The tensioning assembly includes a spring (8); a groove (41) is provided on the cross arm (4), the top of the slider (7) is inserted into the groove (41) on the corresponding side and is slidably connected to its inner wall, a slide rod (6) is provided in the groove (41), the slide rod (6) passes through the slider (7) and is slidably connected to it, the spring (8) is sleeved on the slide rod (6), and the two ends of the slide rod (6) abut against the side of the groove (41) away from the column (1) and the side of the slider (7) away from the column (1) respectively.

6. A groundwater level monitoring device for coal mine goaf areas according to claim 1, characterized in that, A guide frame (13) is provided inside the power box (2). A wire hole is provided on the guide frame (13). The wire hole is coaxial with the through hole (104). Two guide wheels (14) are symmetrically arranged about its axis and rotated and connected to it. The cable (16) is located between the guide wheels (14) on both sides.

7. The groundwater level monitoring device for coal mine goaf areas according to claim 1, characterized in that, A touch screen (201) is installed on the power box (2), and a battery pack is installed inside the power box (2). The battery pack and the power-consuming devices are electrically connected. A photovoltaic panel (5) is installed on the side of the cross arm (4) away from the slider (7). The photovoltaic panel (5) is electrically connected to the battery pack.

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