Depth measuring device for mining goaf exploration

Abstract

The invention relates to the technical field of mine measurement, in particular to a depth measuring device for mine goaf exploration, which comprises a fixing part, a measuring part, a counterweight part, an adjusting part and a driving part, and is characterized in that the measuring part is positioned on the side part of the fixing part, and the counterweight part is fixedly arranged on one side surface, far away from the fixing part, of the measuring part. The driving part drives the adjusting part to rotate and drives the measuring part to rotate together, so that circumferential sampling point measurement is carried out, the measuring part rotates along with the adjusting part, the measuring sliding block continuously slides downwards, and the sensor knows the downward moving distance of the ruler by detecting the downward moving position of the ruler. The process is circulated, the measuring sliding block slides downwards along the guide groove every time the rotating disc rotates by a half circle, the periphery of the rotating table is measured multiple times in the process that the whole measuring part rotates along the periphery of the rotating table, and the measured average value is obtained. And the measured data is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of mine measurement, in particular to a depth measurement device for exploring a mine goaf. Background Art

[0002] Goafs are "holes" created beneath the surface by human excavation or natural geological movements. The existence of goafs poses great safety problems to mine production safety. Personnel and mechanical equipment may fall into the goaf and be injured. Because underground goafs are highly hidden, have poor regularity in spatial distribution characteristics, and are difficult to predict the collapse of the goaf roof, how to quantitatively evaluate the distribution range, spatial morphological characteristics, and collapse conditions of underground goafs has always been a key technical problem that has plagued engineering and technical personnel in evaluating the potential hazards of goafs and reasonably determining treatment measures for goafs.

[0003] According to a Chinese patent with the authorization announcement number CN116379955B, a depth measuring device for exploring mine goafs is disclosed. By setting a depth-probing mechanism, the entire loading device can be lowered to the bottom of the goaf through the depth-probing mechanism, and the environment at the bottom of the goaf can be sampled through the sampling mechanism and the suction device. While exploring the depth of the goaf, the soil and the air inside the goaf can also be detected. In fact, the bottom of the goaf of a mine is usually uneven, and there are low-lying pits in some areas. Therefore, the measurement of the depth of the goaf of a mine cannot be based on the measurement data of a single point. It is necessary to measure multiple points and take an average value to obtain a more accurate depth value. The depth measuring device for exploring mine goafs disclosed above obviously does not have the technical effect of multi-point measurement, resulting in low accuracy of the measurement data.

[0004] Therefore, it is necessary to propose a depth measuring device for exploring mine goaf to solve the above technical problems. Summary of the invention

[0005] The present invention provides the following technical solution: a depth measuring device for exploring a mine goaf, comprising:

[0006] Fixed part;

[0007] A measuring part, located at the side of the fixing part, and used for measuring the depth of the goaf of the mine;

[0008] A counterweight portion, fixedly arranged on a side of the measuring portion away from the fixing portion, and used for counterweighting the measuring portion;

[0009] An adjusting part, movably arranged inside the fixing part, and used for adjusting the measuring range of the measuring part;

[0010] The driving part is fixedly arranged inside the fixing part, and is used for driving the measuring part.

[0011] As a preferred solution of the present invention, the fixing part includes:

[0012] A base, a measuring instrument being fixedly mounted on the bottom of the base;

[0013] Connect the vertical axis and fix it at the top center of the base in an upright manner;

[0014] A turntable is rotatably mounted on the periphery of the connecting vertical shaft through bearings;

[0015] The supporting plate is fixedly installed on the middle part of the inner wall of the turntable.

[0016] As a preferred solution of the present invention, the measuring unit includes:

[0017] A connecting plate connected to the adjusting portion;

[0018] A rotating shaft is rotatably mounted inside the connecting plate;

[0019] A turntable, wherein the turntable is fixedly mounted on one end of the rotating shaft away from the adjusting portion, and a guide groove is formed through the outer wall of the turntable, and the guide groove passes through the center of the turntable;

[0020] A measuring slider is slidably installed inside the guide groove.

[0021] As a preferred solution of the present invention, the measuring unit further includes:

[0022] A slide groove is provided on the inner walls of both sides of the guide groove, a circular cavity is provided inside the side of the slide groove away from the guide groove, a circular groove is provided on the inner wall of the circular cavity away from the slide groove, and the circular groove extends to the outer wall of the turntable;

[0023] A brake gate is slidably mounted inside the slide groove, and a side surface of the brake gate close to the guide groove abuts against a side surface of the measuring slide block;

[0024] A push rod is fixedly mounted on a side of the brake gate away from the measuring slide, and the push rod passes through the circular cavity and extends to the inside of the circular groove, the outer wall of the push rod is slidably connected to the inner wall of the circular groove, and the push rod extends to the outer periphery of the outer wall of the rotating disk;

[0025] A tension spring is located at the periphery of a push rod, and the push rod is fixedly installed between the brake gate and an inner wall of one side of the circular cavity;

[0026] A push block, fixedly mounted on the end of the push rod away from the brake gate;

[0027] A shaft pin is fixedly mounted on a side of the push block close to the adjusting portion;

[0028] The guide wheel is rotatably mounted around the axle pin through a bearing;

[0029] The positioning posts are fixedly mounted at both ends of one side surface of the connecting plate close to the turntable, and the positions of the positioning posts correspond to the positions of the guide wheels.

[0030] As a preferred solution of the present invention, the measuring part further includes:

[0031] The scale is fixedly mounted on one side surface of the measuring slider away from the adjusting part;

[0032] The internal thread hole is penetrated and opened on the front surface of the turntable;

[0033] The sensor is fixedly mounted inside the internal thread hole through thread fastening, and the position of the sensor corresponds to the position of the scale.

[0034] As a preferred solution of the present invention, the measuring part further includes:

[0035] The transfer grooves are opened at both ends of the measuring slider, and an accommodation cavity is opened inside the measuring slider, and the accommodation cavity communicates with the two transfer grooves;

[0036] The drilling rods are rotatably mounted inside the transfer grooves, and the number of the drilling rods is two;

[0037] The drill bits are fixedly mounted at one ends of the drilling rods away from the accommodation cavity, and the number of the drill bits is two;

[0038] The driving cylinder is fixedly mounted between the two drilling rods, and there is a gap between the outer wall of the driving cylinder and the inner wall of the accommodation cavity, and a spiral groove is opened on the outer wall of the driving cylinder;

[0039] The positioning pin is fixedly mounted on the inner wall of the rear end of the guide groove, the positioning pin is located at the center position of the turntable, and the outer wall of the positioning pin is slidably connected with the inner wall of the spiral groove;

[0040] The relief groove is opened on the back surface of the measuring slider, the relief groove communicates with the inside of the accommodation cavity, and the outer wall of the positioning pin is slidably connected with the inner wall of the relief groove.

[0041] As a preferred solution of the present invention, the counterweight part includes:

[0042] The fixed bent frame is fixedly mounted on the front surface of the measuring slider, and a plurality of equally spaced screw holes are opened on the front surface of the fixed bent frame;

[0043] The counterweight block is fixedly mounted on the front surface of the fixed bent frame, an assembly hole is penetrated and opened on the front surface of the counterweight block, a clamping groove is opened on the back surface of the counterweight block, and the clamping groove is sleeved around the fixed bent frame;

[0044] The assembly bolt is inserted inside the assembly hole and is connected to the inner wall of the screw hole through thread fit.

[0045] As a preferred solution of the present invention, the adjusting part includes:

[0046] A square guide sleeve is fixedly installed on the top of the support plate. The number of the square guide sleeves is two, and the two square guide sleeves are symmetrically distributed about the center of the square guide sleeve;

[0047] A square adjusting rod is slidably installed inside the square guide sleeve. One end of the square adjusting rod is fixedly connected to the side surface of the connecting plate away from the turntable, and the square adjusting rod movably penetrates through the turntable;

[0048] A connecting piece is fixedly installed at one end of the square adjusting rod away from the connecting plate;

[0049] A thrust plate is fixedly installed in the middle of the side surface of the connecting piece away from the square adjusting rod;

[0050] A servo cylinder is fixedly installed on the inner wall of the turntable. The output rod of the servo cylinder extends to the periphery of the turntable and is fixedly connected to the surface of the thrust plate.

[0051] As a preferred solution of the present invention, the driving part includes:

[0052] A servo motor is fixedly installed on the bottom wall of the turntable;

[0053] A planetary gear is fixedly installed on the output shaft of the servo motor:

[0054] A sun gear is fixedly installed on the outer wall of the connecting vertical shaft, and the sun gear meshes with the planetary gear.

[0055] As a preferred solution of the present invention, the driving part further includes:

[0056] A positioning bevel gear is fixedly installed at the upper end of the outer wall of the connecting vertical shaft;

[0057] A bearing seat is fixedly installed on the top of the support plate. The number of the bearing seats is two, and the two bearing seats are symmetrically distributed about the center of the support plate, and the two bearing seats are located between the two square adjusting rods;

[0058] A key sleeve is rotatably installed between the two bearing seats;

[0059] A planetary bevel gear is fixedly installed on the outer wall of the key sleeve, and the planetary bevel gear meshes with the positioning bevel gear;

[0060] A key shaft is slidably installed inside the key sleeve. One end of the key shaft is fixedly connected to the end of the rotating shaft away from the turntable.

[0061] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0062] 1. In the present invention, the driving part drives the adjusting part to rotate, driving the measuring part to rotate together, so as to perform circumferential sampling measurement. During the rotation of the measuring part with the adjusting part, the measuring part will rotate on its own, causing the measuring slider to continuously slide downward. The sensor detects the downward movement position of the scale, thereby knowing the distance of the scale moving downward, and statistically calculates with the preliminary measurement data of the measuring instrument. By repeating the above process, every time the turntable rotates half a circle, the measuring slider will slide downward along the guiding groove. During the process of the entire measuring part rotating along the periphery of the turntable, the periphery of the turntable is measured multiple times, and the average value of the measurements is taken. Compared with the existing device, the measurement data is more accurate.

[0063] 2. In the present invention, during the downward movement of the measuring slider, it drives the driving cylinder and the spiral groove to move downward together. Due to the sliding connection between the spiral groove and the positioning pin, the positioning pin rotates on its own during the downward movement, and then drives the drill bit to rotate through the connection of the drilling rod, so that the drill bit at the bottom of the measuring slider generates a drilling force, which can drill into the floating soil layer at the bottom of the mined - out area of the mine, enabling the bottom of the measuring slider to contact the surface layer at the bottom of the mined - out area of the mine, thereby improving the measurement accuracy.

[0064] 3. In the present invention, the output rod of the servo cylinder drives the thrust plate to move a certain distance in the direction close to the turntable. The movement of the thrust plate drives the two square adjusting rods to slide along the two square guide sleeves through the connection of the connecting piece, pushing the measuring part and the counterweight part to move, so that the radius of the measuring part rotating along the periphery of the turntable becomes larger, that is, the range of the measuring part rotating along the periphery of the turntable becomes larger, thereby performing multi - range measurements on the bottom of the mined - out area of the mine to improve the accuracy of the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 is a schematic structural diagram of the present invention;

[0066] Figure 2 is a schematic side - sectional structural diagram of the turntable in the present invention;

[0067] Figure 3 In the present invention Figure 2 is a schematic structural diagram of the bottom view;

[0068] Figure 4 is a schematic structural diagram of the driving part in the present invention;

[0069] Figure 5 is a schematic structural diagram of the counterweight part in the present invention;

[0070] Figure 6 is a schematic structural diagram of the counterweight block in the present invention;

[0071] Figure 7 Schematic diagram of the unfolded structure of the turntable in the present invention;

[0072] Figure 8 Schematic diagram of the internal planar structure of the turntable in the present invention;

[0073] Figure 9 Schematic diagram of the structure of the brake shoe in the present invention;

[0074] Figure 10 Schematic diagram of the structure of the rotating shaft in the present invention;

[0075] Figure 11 Schematic diagram of the side sectional structure of the measuring slider in the present invention;

[0076] Figure 12 In the present invention Figure 11 Schematic diagram of the enlarged structure of part A.

[0077] In the figure: 100, fixed part; 101, base; 102, connecting vertical shaft; 103, turntable; 104, support plate; 200, measuring part; 201, connecting plate; 202, rotating shaft; 203, turntable; 204, guide groove; 205, measuring slider; 206, sliding groove; 207, circular cavity; 208, circular groove; 209, brake shoe; 2010, push rod; 2011, tension spring; 2012, push block; 2013, pin; 2014, guide wheel; 2015, positioning column; 2016, scale; 2017, internal thread hole; 2018, sensor; 2019, transfer groove; 2020, drilling rod; 2021, drill bit; 2022, driving cylinder; 2023, spiral groove; 2024, positioning pin; 2025, relief groove; 2005, placement cavity; 300, counterweight part; 301, fixed bent frame; 302, screw hole; 303, counterweight block; 304, assembly hole; 305, assembly bolt; 306, clamping groove; 400, adjusting part; 401, square guide sleeve; 402, square adjusting rod; 403, connecting piece; 404, thrust plate; 405, servo cylinder; 500, driving part; 501, servo motor; 502, planetary gear; 503, sun gear; 504, positioning bevel gear; 505, bearing seat; 506, key sleeve; 507, planetary bevel gear; 508, key shaft; 600, measuring instrument. Detailed implementation manners

[0078] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0079] Please refer to Figures 1 to 12 , the technical solution provided by the present invention is as follows:

[0080] A depth measurement device for mine goaf exploration, comprising a fixing part 100, a measuring part 200, a counterweight part 300, an adjusting part 400 and a driving part 500. The measuring part 200 is located on the side of the fixing part 100. The measuring part 200 is used for measuring the depth of the mine goaf. The counterweight part 300 is fixedly arranged on the side surface of the measuring part 200 away from the fixing part 100. The counterweight part 300 is used for counterweight of the measuring part 200. The adjusting part 400 is movably arranged inside the fixing part 100. The adjusting part 400 is used for adjusting the measuring range of the measuring part 200. The driving part 500 is fixedly arranged inside the fixing part 100. The driving part 500 is used for driving the measuring part 200.

[0081] Furthermore, specifically referring to Figures 1 to 4 and Figures 8 to 10 shown as follows:

[0082] The fixing part 100 includes a base 101, a connecting vertical shaft 102, a turntable 103 and a support plate 104. A measuring instrument 600 is fixedly installed at the bottom of the base 101. The connecting vertical shaft 102 is fixedly installed at the center position of the top of the base 101 in an upright manner. The turntable 103 is rotatably installed around the connecting vertical shaft 102 through a bearing. The support plate 104 is fixedly installed in the middle of the inner wall of the turntable 103;

[0083] The measuring unit 200 includes a connecting plate 201, a rotating shaft 202, a turntable 203, a guiding groove 204, a measuring slider 205, a sliding groove 206, a circular cavity 207, a circular groove 208, a brake flap 209, a taper rod 2010, a tension spring 2011, a pushing block 2012, a shaft pin 2013, a guide wheel 2014, a positioning post 2015, a scale 2016, an internal thread hole 2017, and a sensor 2018. The connecting plate 201 is connected to the adjusting unit 400. The rotating shaft 202 is rotatably installed inside the connecting plate 201. One end of the rotating shaft 202 away from the adjusting unit 400 is fixedly installed with the turntable 203. A guiding groove 204 is penetratingly opened on the outer wall of the turntable 203. The guiding groove 204 passes through the center of the turntable 203. The measuring slider 205 is slidably installed inside the guiding groove 204. The sliding grooves 206 are opened on the inner walls on both sides of the guiding groove 204. A circular cavity 207 is opened inside one side surface of the sliding groove 206 away from the guiding groove 204. A circular groove 208 is opened on the inner wall of the circular cavity 207 away from the sliding groove 206. The circular groove 208 extends to the outer wall of the turntable 203. The brake flap 209 is slidably installed inside the sliding groove 206. One side surface of the brake flap 209 close to the guiding groove 204 abuts against the side surface of the measuring slider 205. The taper rod 2010 is fixedly installed on one side surface of the brake flap 209 away from the measuring slider 205, and the taper rod 2010 penetrates through the circular cavity 207 and extends into the circular groove 208. The outer wall of the taper rod 2010 is slidably connected to the inner wall of the circular groove 208. The taper rod 2010 extends to the periphery of the outer wall of the turntable 203. The tension spring 2011 is located on the periphery of the taper rod 2010. The taper rod 2010 is fixedly installed between the brake flap 209 and one side inner wall of the circular cavity 207. The pushing block 2012 is fixedly installed at one end of the taper rod 2010 away from the brake flap 209. The shaft pin 2013 is fixedly installed on one side surface of the pushing block 2012 close to the adjusting unit 400. The guide wheel 2014 is rotatably installed on the periphery of the shaft pin 2013 through a bearing. The positioning posts 2015 are fixedly installed at both ends of one side surface of the connecting plate 201 close to the turntable 203. The positions of the positioning posts 2015 correspond to the positions of the guide wheels 2014. The scale 2016 is fixedly installed on one side surface of the measuring slider 205 away from the adjusting unit 400. An internal thread hole 2017 is penetratingly opened on the front surface of the turntable 203. The sensor 2018 is fixedly installed inside the internal thread hole 2017 through threading. The position of the sensor 2018 corresponds to the position of the scale 2016.

[0084] Specifically, after buckling the sling with the hanging ring at the top of the device, the device is placed towards the mined - out area of the mine. During this process, the bottom of the measuring instrument 600 gradually approaches the bottom of the mined - out area of the mine, and the measuring instrument 600 continuously collects the distance changes. Until the bottom support legs of the base 101 contact the bottom of the mined - out area of the mine, the measuring instrument 600 stores the measured data of the device's lowering depth, and conducts a preliminary rough measurement of the depth of the mined - out area of the mine. The driving part 500 drives the measuring part 200 to rotate in a circular motion around the periphery of the turntable 103, and drives the measuring part 200 to rotate self - sufficiently, so that the rotation of the rotating shaft 202 drives the turntable 203 to rotate together, and then drives the measuring slider 205 and the counterweight part 300 to rotate. When the measuring slider 205 rotates to a vertical angle, the two guide wheels 2014 just contact the two positioning columns 2015 as the turntable 203 rotates. The two positioning columns 2015 generate a wedging force acting outward on the two guide wheels 2014, pushing the two guide wheels 2014 in opposite directions. The movement of the two guide wheels 2014 drives the two push blocks 2012 to move together through the two axles 2013, further driving the two push - pull rods 2010 and the two brake plates 209 to move, releasing the abutting action on the side wall of the measuring slider 205. Therefore, the frictional force between the brake plate 209 and the measuring slider 205 is released, and the measuring slider 205 rapidly falls under the action of gravity, so that a drill bit 2021 located at the bottom of the measuring slider 205 moves downward to contact the bottom of the mined - out area of the mine. It should be noted that the downward movement of the measuring slider 205 drives the scale 2016 to move together. There is a reference scale point in the middle of the scale 2016. When the scale 2016 moves downward, when the reference point in the middle passes through the end of the sensor 2018, after the sensor 2018 detects this point, as the scale 2016 continues to move downward, the sensor 2018 knows the distance that the scale 2016 moves downward by detecting the downward movement position of the scale 2016, and conducts statistical calculation with the preliminary measurement data of the measuring instrument 600. Repeating the above process, every time the turntable 203 rotates half a circle, the measuring slider 205 will slide downward along the guide groove 204, so that during the process of the entire measuring part 200 rotating around the periphery of the turntable 103, the periphery of the turntable 103 is measured multiple times, and the average value of the measurements is taken. Compared with the existing device, the measurement data is more accurate.

[0085] Further, specifically refer to Figure 11 and Figure 12 as shown in:

[0086] The measuring unit 200 further includes an adapter slot 2019, a drilling rod 2020, a drill bit 2021, a driving cylinder 2022, a spiral groove 2023, a positioning pin 2024, and a relief groove 2025. The adapter slot 2019 is opened at both ends of the measuring slider 205. An installation cavity 2005 is opened inside the measuring slider 205. The installation cavity 2005 communicates with the two adapter slots 2019. The drilling rod 2020 is rotatably installed inside the adapter slot 2019. The number of drilling rods 2020 is two. The drill bit 2021 is fixedly installed at one end of the drilling rod 2020 away from the installation cavity 2005. The number of drill bits 2021 is two. The driving cylinder 2022 is fixedly installed between the two drilling rods 2020, and there is a gap between the outer wall of the driving cylinder 2022 and the inner wall of the installation cavity 2005. A spiral groove 2023 is opened on the outer wall of the driving cylinder 2022. The positioning pin 2024 is fixedly installed on the rear inner wall of the guiding groove 204. The positioning pin 2024 is located at the center of the turntable 203. The outer wall of the positioning pin 2024 is slidably connected to the inner wall of the spiral groove 2023. The relief groove 2025 is opened on the back of the measuring slider 205. The relief groove 2025 communicates with the inside of the installation cavity 2005. The outer wall of the positioning pin 2024 is slidably connected to the inner wall of the relief groove 2025.

[0087] Specifically, during the downward movement of the measuring slider 205, the driving cylinder 2022 together with the spiral groove 2023 is driven to move downward. Due to the sliding connection between the spiral groove 2023 and the positioning pin 2024, the positioning pin 2024 rotates while moving downward, and then drives the drill bit 2021 to rotate through the connection of the drilling rod 2020, so that the drill bit 2021 at the bottom of the measuring slider 205 generates a drilling force and can drill into the floating soil layer at the bottom of the mined-out area of the mine, enabling the bottom of the measuring slider 205 to contact the surface layer at the bottom of the mined-out area of the mine, thereby improving the measurement accuracy.

[0088] Further, specifically referring to Figure 5 as shown:

[0089] The counterweight unit 300 includes a fixed bent frame 301, a screw hole 302, a counterweight 303, an assembly hole 304, an assembly bolt 305, and a clamping groove 306. The fixed bent frame 301 is fixedly installed on the front of the measuring slider 205. A plurality of equally spaced screw holes 302 are opened on the front of the fixed bent frame 301. The counterweight 303 is fixedly installed on the front of the fixed bent frame 301. An assembly hole 304 is penetrated through the front of the counterweight 303. A clamping groove 306 is opened on the back of the counterweight 303. The clamping groove 306 is sleeved on the periphery of the fixed bent frame 301. The assembly bolt 305 is inserted into the assembly hole 304 and is threadedly connected to the inner wall of the screw hole 302.

[0090] Specifically, through the spiral connection between the assembly bolt 305 and the screw hole 302, the counterweight 303 can be fixedly connected to the fixed bent frame 301. The provided card slot 306 is sleeved around the fixed bent frame 301, which can prevent the counterweight 303 from twisting and further improve the stability of the counterweight 303. By fixedly installing the counterweight 303 around the fixed bent frame 301, the overall weight of the measuring part 200 can be increased. Thus, when the measuring slider 205 moves downward, a stronger gravitational potential energy can be obtained, enabling the drill bit 2021 to achieve a stronger soil-breaking effect, facilitating the drill bit 2021 to drill into the floating soil layer at the bottom of the mined-out area of the mine and obtaining more accurate measurement data.

[0091] Further, specifically referring to Figures 2 to 4 as shown:

[0092] The adjusting part 400 includes a square guide sleeve 401, a square adjusting rod 402, a connecting piece 403, a thrust plate 404, and a servo cylinder 405. The square guide sleeve 401 is fixedly installed on the top of the support plate 104. The number of square guide sleeves 401 is two, and the two square guide sleeves 401 are symmetrically distributed about the center of the square guide sleeve 401. The square adjusting rod 402 is slidably installed inside the square guide sleeve 401. One end of the square adjusting rod 402 is fixedly connected to the side surface of the connecting plate 201 away from the turntable 203. The square adjusting rod 402 movably penetrates through the turntable 103. The connecting piece 403 is fixedly installed at the end of the square adjusting rod 402 away from the connecting plate 201. The thrust plate 404 is fixedly installed in the middle of the side surface of the connecting piece 403 away from the square adjusting rod 402. The servo cylinder 405 is fixedly installed on the inner wall of the turntable 103. The output rod of the servo cylinder 405 extends out of the periphery of the turntable 103 movably and is fixedly connected to the surface of the thrust plate 404.

[0093] Specifically, after the measuring part 200 of the device rotates one week along the periphery of the turntable 103, the servo cylinder 405 is started. The output rod of the servo cylinder 405 drives the thrust plate 404 to move a certain distance in the direction close to the turntable 103. The movement of the thrust plate 404 drives the two square adjusting rods 402 to slide along the two square guide sleeves 401 through the connection of the connecting piece 403, pushing the measuring part 200 and the counterweight part 300 to move, so that the radius of the rotation of the measuring part 200 along the periphery of the turntable 103 becomes larger, that is, the rotation range of the measuring part 200 along the periphery of the turntable 103 becomes larger, thereby performing multi-range measurements on the bottom of the mined-out area of the mine to improve the accuracy of the measurement data.

[0094] Further, specifically referring to Figure 2 and Figure 4 as shown:

[0095] The driving unit 500 includes a servo motor 501, a planetary gear 502, a sun gear 503, a positioning bevel gear 504, a bearing block 505, a key sleeve 506, a planetary bevel gear 507, and a key shaft 508. The servo motor 501 is fixedly installed on the bottom wall of the turntable 103. The planetary gear 502 is fixedly installed on the output shaft of the servo motor 501. The sun gear 503 is fixedly installed on the outer wall of the connecting vertical shaft 102. The sun gear 503 meshes with the planetary gear 502. The positioning bevel gear 504 is fixedly installed at the upper end of the outer wall of the connecting vertical shaft 102. The bearing block 505 is fixedly installed on the top of the support plate 104. The number of bearing blocks 505 is two. The two bearing blocks 505 are symmetrically distributed about the center of the support plate 104, and the two bearing blocks 505 are located between the two square adjusting rods 402. The key sleeve 506 is rotatably installed between the two bearing blocks 505. The planetary bevel gear 507 is fixedly installed on the outer wall of the key sleeve 506. The planetary bevel gear 507 meshes with the positioning bevel gear 504. The key shaft 508 is slidably installed inside the key sleeve 506. One end of the key shaft 508 is fixedly connected to the end of the rotating shaft 202 away from the turntable 203.

[0096] Specifically, after the device lands, the servo motor 501 is started. The planetary gear 502 is driven to rotate through the output shaft of the servo motor 501, causing the planetary gear 502 to perform a planetary movement along the periphery of the sun gear 503. Further, under the connection of the servo motor 501, the turntable 103, the adjusting unit 400, the measuring unit 200, and the counterweight unit 300 are driven to rotate together. The rotation of the turntable 103 drives the bearing block 505, the key sleeve 506, and the planetary bevel gear 507 to rotate through the connection of the support plate 104, causing the planetary bevel gear 507 to perform a planetary movement along the top of the positioning bevel gear 504, driving the key sleeve 506 to rotate. The rotation of the key sleeve 506 drives the rotating shaft 202 to rotate through the connection of the key shaft 508, causing the entire measuring unit 200 to rotate.

[0097] When the depth measuring device for mine goaf exploration of the present invention is working, after being buckled with a suspension rope to the suspension ring at the top of the device, the device is placed into the mine goaf. During this period, the bottom of the measuring instrument 600 gradually approaches the bottom of the mine goaf. The measuring instrument 600 continuously collects the distance changes. Until the bottom support legs of the base 101 contact the bottom of the mine goaf, the measuring instrument 600 stores the depth measurement data of the device's lowering, and makes a preliminary rough measurement of the depth of the mine goaf;

[0098] After the device touches down, start the servo motor 501. Drive the planetary gear 502 to rotate through the output shaft of the servo motor 501, causing the planetary gear 502 to perform a planetary movement along the periphery of the sun gear 503. Further, under the connection action of the servo motor 501, drive the turntable 103, the adjustment part 400, the measurement part 200, and the counterweight part 300 to rotate together. The rotation of the turntable 103 drives the bearing seat 505, the key sleeve 506, and the planetary bevel gear 507 to rotate through the connection of the support plate 104, causing the planetary bevel gear 507 to perform a planetary movement along the top of the positioning bevel gear 504, driving the key sleeve 506 to rotate. The rotation of the key sleeve 506 drives the rotating shaft 202 to rotate through the connection of the key shaft 508. The rotation of the rotating shaft 202 drives the turntable 203 to rotate together, and then drives the measurement slider 205 and the counterweight part 300 to rotate. When the measurement slider 205 rotates to the vertical angle, the two guide wheels 2014 just rotate with the turntable 203 and contact the two positioning posts 2015. Through the action of the outward wedge force generated by the two positioning posts 2015 on the two guide wheels 2014, push the two guide wheels 2014 in opposite directions. The movement of the two guide wheels 2014 drives the two push blocks 2012 to move together through the two axles 2013, further driving the two push rods 2010 and the two brake plates 209 to move, releasing the abutting action on the side wall of the measurement slider 205. Therefore, the frictional force between the brake plate 209 and the measurement slider 205 is released, and the measurement slider 205 quickly drops under the action of gravity, causing a drill bit 2021 located at the bottom of the measurement slider 205 to move downward and contact the bottom of the mined - out area of the mine. It should be noted that the downward movement of the measurement slider 205 drives the scale 2016 to move together. There is a reference scale point in the middle of the scale 2016 here. When the scale 2016 moves downward, when the reference point in the middle passes through the end of the sensor 2018, after the sensor 2018 detects this point, as the scale 2016 continues to move downward, the sensor 2018 knows the distance that the scale 2016 moves downward by detecting the downward movement position of the scale 2016, and conducts statistical calculation with the preliminary measurement data of the measuring instrument 600. Repeat the above process. Each time the turntable 203 rotates half a circle, the measurement slider 205 will slide downward along the guide groove 204, so that during the process of the entire measurement part 200 rotating along the periphery of the turntable 103, the periphery of the turntable 103 is measured multiple times, and the average value of the measurements is taken. Compared with the existing device, the measurement data is more accurate;

[0099] During the downward movement of the measuring slider 205, the driving cylinder 2022 is driven to move downward together with the spiral groove 2023. Due to the sliding connection between the spiral groove 2023 and the positioning pin 2024, the positioning pin 2024 rotates simultaneously during the downward movement, and then drives the drill bit 2021 to rotate through the connection of the drilling rod 2020, so that the drill bit 2021 at the bottom of the measuring slider 205 generates a drilling force and can drill into the floating soil layer at the bottom of the mined - out area of the mine, enabling the bottom of the measuring slider 205 to contact the surface layer at the bottom of the mined - out area of the mine, thereby improving the measurement accuracy;

[0100] After the measuring part 200 of the device rotates one week along the periphery of the turntable 103, the servo cylinder 405 is started. The output rod of the servo cylinder 405 drives the thrust plate 404 to move a certain distance in the direction close to the turntable 103. The movement of the thrust plate 404 drives the two square adjusting rods 402 to slide along the two square guide sleeves 401 through the connection of the connecting piece 403, pushing the measuring part 200 and the counterweight part 300 to move, so that the radius of the rotation of the measuring part 200 along the periphery of the turntable 103 becomes larger, that is, the range of the rotation of the measuring part 200 along the periphery of the turntable 103 becomes larger, thereby performing multi - range measurements on the bottom of the mined - out area of the mine to improve the accuracy of the measurement data.

[0101] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A depth measuring device for exploring a mine goaf, characterized in that: include: A fixing portion (100); A measuring part (200) is located on the side of the fixing part (100), and the measuring part (200) is used for measuring the depth of a goaf in a mine; A counterweight portion (300) is fixedly arranged on a side of the measuring portion (200) away from the fixing portion (100), and the counterweight portion (300) is used for counterweighting the measuring portion (200); an adjusting portion (400) movably arranged inside the fixing portion (100), the adjusting portion (400) being used to adjust the measuring range of the measuring portion (200); The driving part (500) is fixedly arranged inside the fixing part (100), and the driving part (500) is used to drive the measuring part (200).

2. A depth measuring device for exploring a mine goaf according to claim 1, characterized in that: The fixing part (100) comprises: A base (101), a measuring instrument (600) being fixedly mounted on the bottom of the base (101); Connecting the vertical shaft (102), and fixedly mounted in an upright manner at the top center position of the base (101); A turntable (103) is rotatably mounted on the periphery of the vertical shaft (102) via a bearing; The supporting plate (104) is fixedly mounted on the middle part of the inner wall of the rotating table (103).

3. A depth measuring device for exploring a mine goaf according to claim 2, characterized in that: The measuring unit (200) comprises: A connecting plate (201), wherein the connecting plate (201) is connected to the adjusting portion (400); A rotating shaft (202), the connecting plate (201) is rotatably mounted with the rotating shaft (202); A rotating disk (203), wherein the rotating disk (203) is fixedly mounted on one end of the rotating shaft (202) away from the adjusting portion (400), and a guide groove (204) is formed through the outer wall of the rotating disk (203), and the guide groove (204) passes through the center of the rotating disk (203); A measuring slider (205) is slidably mounted inside the guide groove (204).

4. A depth measuring device for exploring a mine goaf according to claim 3, characterized in that: The measuring unit (200) further includes: A slide groove (206) is provided on the inner walls of both sides of the guide groove (204); a circular cavity (207) is provided inside a side of the slide groove (206) away from the guide groove (204); a circular groove (208) is provided on the inner wall of a side of the circular cavity (207) away from the slide groove (206); and the circular groove (208) extends to the outer wall of the rotating disk (203); A brake gate (209) is slidably mounted inside the slide groove (206), wherein a side surface of the brake gate (209) close to the guide groove (204) abuts against a side surface of the measuring slide block (205); A push rod (2010) is fixedly mounted on a side of the brake gate (209) away from the measuring slider (205), and the push rod (2010) passes through the circular cavity (207) and extends to the inside of the circular groove (208), the outer wall of the push rod (2010) is slidably connected to the inner wall of the circular groove (208), and the push rod (2010) extends to the periphery of the outer wall of the rotating disk (203); A tensioning spring (2011) is located on the periphery of a push rod (2010), wherein the push rod (2010) is fixedly mounted between a brake gate plate (209) and an inner wall of one side of the circular cavity (207); A push block (2012) is fixedly mounted on an end of the push rod (2010) away from the brake gate plate (209); A shaft pin (2013) is fixedly mounted on a side surface of the push block (2012) close to the adjustment portion (400); A guide wheel (2014) is rotatably mounted on the periphery of the shaft pin (2013) via a bearing; The positioning column (2015) is fixedly mounted on both ends of a side surface of the connecting plate (201) close to the rotating disk (203), and the position of the positioning column (2015) corresponds to the position of the guide wheel (2014).

5. A depth measuring device for exploring a mine goaf according to claim 4, characterized in that: The measuring unit (200) further includes: A ruler (2016) is fixedly mounted on a side of the measuring slider (205) away from the adjusting portion (400); An inner thread hole (2017), wherein the front surface of the rotating disk (203) is provided with an inner thread hole (2017); The sensor (218) is installed inside the inner thread hole (2017) by threaded fastening, and the position of the sensor (2018) corresponds to the position of the scale (2016).

6. A depth measuring device for exploring a mine goaf according to claim 5, characterized in that: The measuring unit (200) further includes: Adaptation grooves (2019) are provided at both ends of the measuring slider (205); a placement cavity (2005) is provided inside the measuring slider (205); and the placement cavity (2005) is connected to the two adaptation grooves (2019); A drilling rod (2020) is rotatably mounted inside the adapter groove (219), and the number of the drilling rods (2020) is two; A drill bit (2021) is fixedly mounted on an end of the drilling rod (2020) away from the placement cavity (2005), and the number of the drill bits (2021) is two; A driving cylinder (2022) is fixedly installed between the two drilling rods (2020), and a gap is provided between the outer wall of the driving cylinder (2022) and the inner wall of the placement cavity (2005), and a spiral groove (2023) is provided on the outer wall of the driving cylinder (2022); A positioning pin (2024) is fixedly mounted on the inner wall of the rear end of the guide groove (204), the positioning pin (2024) is located at the center of the rotating disk (203), and the outer wall of the positioning pin (2024) is slidably connected to the inner wall of the spiral groove (2023); The clearance groove (2025) is provided on the back side of the measuring slide block (205), the clearance groove (2025) is connected with the inside of the placement cavity (2005), and the outer wall of the positioning pin (2024) is slidably connected with the inner wall of the clearance groove (2025).

7. A depth measuring device for exploring a mine goaf according to claim 6, characterized in that: The counterweight part (300) comprises: A fixed bending frame (301) is fixedly mounted on the front side of the measuring slide block (205), and a plurality of screw holes (302) distributed at equal distances are provided on the front side of the fixed bending frame (301); A counterweight block (303) is fixedly mounted on the front of the fixed curved frame (301); a mounting hole (304) is provided through the front of the counterweight block (303); a slot (306) is provided on the back of the counterweight block (303); and the slot (306) is sleeved on the periphery of the fixed curved frame (301); The assembly bolt (305) is inserted into the interior of the assembly hole (304) and is connected to the inner wall of the screw hole (302) through threaded engagement.

8. A depth measuring device for exploring a mine goaf according to claim 7, characterized in that: The adjustment unit (400) comprises: A square guide sleeve (401) is fixedly mounted on the top of the support plate (104), wherein the number of the square guide sleeves (401) is two, and the two square guide sleeves (401) are symmetrically distributed about the center of the square guide sleeve (401); A square adjustment rod (402) is slidably mounted inside the square guide sleeve (401), one end of the square adjustment rod (402) is fixedly connected to a side of the connecting plate (201) away from the rotating disk (203), and the square adjustment rod (402) movably passes through the rotating table (103); A connecting piece (403) is fixedly mounted on an end of the square adjusting rod (402) away from the connecting plate (201); A thrust plate (404) is fixedly mounted on the middle portion of a side surface of the connecting piece (403) away from the square adjustment rod (402); The servo cylinder (405) is fixedly mounted on the inner wall of the turntable (103), and the output rod of the servo cylinder (405) movably extends to the periphery of the turntable (103) and is fixedly connected to the surface of the thrust plate (404).

9. A depth measuring device for exploring a mine goaf according to claim 8, characterized in that: The driving unit (500) comprises: A servo motor (501) is fixedly mounted on the bottom wall of the turntable (103); The planetary gear (502) is fixedly mounted on the output shaft of the servo motor (501): The sun gear (503) is fixedly mounted on the outer wall of the vertical shaft (102), and the sun gear (503) is meshed with the planetary gears (502).

10. A depth measuring device for exploring a mine goaf according to claim 9, characterized in that: The driving unit (500) further includes: A positioning bevel gear (504) is fixedly mounted on the upper end of the outer wall connected to the vertical shaft (102); A bearing seat (505) is fixedly mounted on the top of the support plate (104), wherein the number of the bearing seats (505) is two, the two bearing seats (505) are symmetrically distributed about the center of the support plate (104), and the two bearing seats (505) are located between two square adjustment rods (402); A key sleeve (506) is rotatably mounted between the two bearing seats (505); A planetary bevel gear (507) is fixedly mounted on the outer wall of the key sleeve (506), and the planetary bevel gear (507) is meshed with the positioning bevel gear (504); The key shaft (508) is slidably mounted inside the key sleeve (506), and one end of the key shaft (508) is fixedly connected to an end of the rotating shaft (202) away from the rotating disk (203).

Images