A hoisting device for coalfield logging equipment

Abstract

The present invention relates to the technical field of hoisting devices, and specifically to a hoisting device for coalfield logging equipment, comprising a small crane, one end of which is equipped with a winding assembly; the present invention uses centrifugal force to move the eccentric wheel to one side on the outer wall of the buckle block, so that the ratchet slot on the outer wall of the eccentric wheel is stuck in the inner wall of the internal ratchet wheel for fixation, thereby causing the eccentric wheel to be stuck, and the eccentric wheel drives the rotating rod to be fixed, and the rotating rod stops lowering the cable, and the device stops; the driving motor drives the driving gear to rotate forward through the rotating rod, so that the driving gear drives the first rack to move downward, and at this time the second rack located on the other side moves upward, thereby causing the flexible clamping block in the limit member to clamp the logging instrument, and the logging instrument has better stability. Conversely, when the first rack moves upward and the second rack moves downward, the second rack drives the positioning pin to move downward and insert into the soil layer for fixation, thereby making the device more stable during operation.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting devices, in particular to a hoisting device for coalfield logging equipment. Background Art

[0002] The lifting device for coalfield logging equipment is a mechanical system specially used in coalfields or coalbed methane wells. The equipment usually includes a host, a computer system, a winch controller, the winch itself, a series of downhole probes and advanced control software. The downhole probe can detect the geophysical parameters of the rock formations near the borehole wall in detail along the borehole profile, realize the accurate division of the borehole geological profile, effectively detect the location of the coal seam, and accurately determine the characteristics of the relevant geology and hydrogeology. Through this comprehensive means, the lifting device for coalfield logging equipment plays a vital role in coalfield exploration and development;

[0003] Due to the complexity of the coalfield environment and the unevenness of the ground, the hoisting device is prone to shaking during movement, which may cause the hoisted logging instruments to be bumped and damaged. During operation, the lack of an effective fixing mechanism for the hoisting equipment will reduce the stability of the logging instruments when they are lowered.

[0004] The existing hoisting devices lack cable overspeed protection. The winch drive system includes key components such as motors, clutches and reducers. Once these components fail or are damaged, they may cause mechanical overspeed. For example, motor failure may cause the speed of the winch and wire rope to increase abnormally, causing mechanical overspeed. In this case, the cable will be lowered too fast, increasing the risk of collision between the logging instrument and the well wall.

[0005] Therefore, a lifting device for coalfield logging equipment is needed to improve the above problems. Summary of the invention

[0006] In order to solve the problem that when a hoisting device is used to hoist coalfield logging equipment, the hanging elements of the existing hoisting device lack the cable overspeed protection function. When a motor fails, the cable may be lowered too fast, thereby increasing the risk of collision between the logging instrument and the well wall. The present invention provides a hoisting device for coalfield logging equipment to solve the above problem.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A lifting device for coalfield logging equipment, comprising a small crane, a winding assembly is installed at one end of the small crane, a telescopic rod is installed at the other end of the small crane, wherein two groups of telescopic rods are provided and are respectively located on the outer wall of the small crane, a first universal wheel is installed at the bottom of the telescopic rod, and a positioning assembly is installed on the outer wall of the telescopic rod;

[0009] The winding assembly includes a mounting base, which is mounted at the port of the small crane, and mounting plates are arranged on the outer wall of the mounting base from left to right in sequence, and fixing rods are symmetrically arranged on the outer wall of the mounting plate, a servo motor is mounted on the outer wall of the mounting base, and a controller is mounted on the outer wall of the servo motor, a driving shaft of the servo motor passes through the mounting plate and extends to the outer wall of the mounting plate, where a transmission magnetic block is mounted, wherein the cross-section of the transmission magnetic block is a concave structure, a magnetic speed sensor is mounted on one side of the transmission magnetic block and on the outer wall of the driving shaft of the servo motor, a rotating rod is rotatably connected on the opposite inner wall of the mounting plate, one end of the rotating rod passes through the mounting plate and extends to the outer wall on one side of the mounting plate, where a magnetic adsorption block is arranged, wherein the magnetic adsorption block is plugged and connected to the inner wall of the transmission magnetic block, and the magnetic adsorption block and the transmission magnetic block are connected through magnetic coupling, and the other end of the rotating rod passes through the mounting plate and extends to the outer wall on the other side of the mounting plate, where a limiter is connected.

[0010] As a preferred solution of the present invention, the limiter includes a snap block and an internal ratchet, the snap block is installed on the outer wall of the rotating rod, an eccentric wheel is sleeved on the outer wall of the snap block, and a limiting groove is provided on the outer wall of the eccentric wheel at a position corresponding to the snap block, a ratchet slot is provided on one side of the limiting groove and located on the outer wall of the eccentric wheel, a mounting round block is provided on the outer wall of the eccentric wheel, a cover shell is plugged and installed on one side of the internal ratchet and located on the outer wall of the mounting plate, a cable is provided on the outer wall of the rotating rod, and a guide is provided on one side of the cable and located at the bottom of the mounting base.

[0011] As a preferred solution of the present invention, the guide member includes a mounting bracket, which is symmetrically arranged on the bottom outer wall of the mounting base, and a first guide rod is symmetrically arranged on the inner wall of the mounting bracket, and a mounting base plate is installed directly below the first guide rod and on the inner wall of the mounting bracket, and mounting rods are symmetrically arranged on the base surface of the mounting base plate, and a second guide rod is slidably connected to the outer wall of the mounting rod, wherein the second guide rod and the first guide rod form a staggered vertical structure with each other, the guide member is located on one side of the fixed rod, and a logging instrument is installed at one end of the cable.

[0012] As a preferred solution of the present invention, the positioning assembly includes a fixed base, which is provided with two groups and are respectively located on the outer walls of the telescopic rod, a limiting sleeve is embedded in the outer wall of the fixed base, and the limiting sleeve is provided with two groups of symmetrical structures, a fixing plate is symmetrically provided on one side of the limiting sleeve and located on the base surface of the fixed base, a driving motor is installed on one side of the fixing plate and located on the base surface of the fixed base, and a rotating rod is installed on the driving shaft of the driving motor.

[0013] As a preferred solution of the present invention, one end of the rotating rod passes through the fixed plate and extends to the inner wall between the fixed plates, on which a driving gear is installed; one side of the driving gear is located on the inner wall of the limiting sleeve and is slidably connected with a first rack; the outer wall of the first rack is meshed with a driving gear; a rotating shaft is rotatably connected on the inner walls opposite to each other between the fixed plates, and a transmission gear is installed on the outer wall of the rotating shaft.

[0014] As a preferred solution of the present invention, a driving gear is meshed and connected on the outer wall of the transmission gear, wherein two groups of rotating shafts are staggered and respectively located between the fixed plates, two groups of transmission gears are arranged and the transmission gears are meshed and connected through teeth and grooves, a second rack is slidably connected on one side of the transmission gear and located on the inner wall of a limiting sleeve, a transmission gear is meshed and connected on the outer wall of the second rack, a positioning pin is arranged at the bottom of the fixed base and located at one end of the second rack, wherein the bottom end of the positioning pin is lower than the bottom end of the first rack, and a limiting member is installed on the other end of the second rack.

[0015] As a preferred solution of the present invention, the limiting member includes a first rotating shaft and a second rotating shaft, the first rotating shaft is rotatably connected to the outer wall of the second rack, the outer wall of the first rotating shaft is rotatably connected to a first connecting plate, the outer wall of the first connecting plate is rotatably connected to a second connecting plate via an insert rod, and a push rod is installed on the outer wall of the second connecting plate.

[0016] As a preferred solution of the present invention, a limit plate is installed at one end of the push rod, and a limit spring is arranged in an equidistant array on the outer wall of the limit plate, and a flexible clamp is arranged at one end of the limit spring, and the inner wall of the flexible clamp is attached to the outer wall of the logging instrument, and a second rotating shaft is installed on one side of the push rod and on the outer wall of the second connecting plate, and the second rotating shaft is rotatably connected to the outer wall of the first rack.

[0017] As a preferred solution of the present invention, a second universal wheel is symmetrically arranged at the bottom of the small crane, and a handle is arranged on the side wall of the small crane, a counterweight is installed on the inner wall of the small crane, and the controller is respectively connected to the servo motor, the magnetic speed sensor and the drive motor through wires, and the connection method is electrical connection.

[0018] Compared with the prior art, the present invention can realize that when the device is overspeeding by arranging a winding assembly in the lifting device for coalfield logging equipment, the eccentric wheel moves to one side on the outer wall of the buckle block under the action of centrifugal force, so that the ratchet groove on the outer wall of the eccentric wheel is stuck in the inner wall of the internal ratchet wheel for fixation, thereby making the eccentric wheel stuck, the eccentric wheel drives the rotating rod to be fixed, the rotating rod stops lowering the cable, and the device stops in time, thereby solving the problem that the hanging elements of the existing lifting devices lack the cable overspeed protection function, and when the motor fails, the cable may be lowered too fast, thereby increasing the risk of collision between the logging instrument and the well wall.

[0019] The present invention arranges a positioning component in the lifting device for coalfield logging equipment, so that the driving motor can drive the driving gear to rotate through the rotating rod, the driving gear drives the transmission gear to rotate, the transmission gear applies a thrust to the second rack to move it downward, and then the second rack drives the positioning pin to move downward, so that the positioning pin is inserted into the soil layer for fixing, and the stability of the device is better, thereby solving the problem of reduced stability when the logging instrument is lowered due to the lack of an effective fixing mechanism in the lifting equipment during operation.

[0020] The present invention can realize that when the first rack moves downward, the first rack drives the second connecting plate downward through the second rotating shaft, and at the same time, the second rack drives the first connecting plate upward through the first rotating shaft. At this time, one end of the limit member moves upward, and when the other end of the limit member moves downward, the second connecting plate and the first connecting plate in the limit member cooperate with each other to form an inclined structure, and at the same time, the second connecting plate drives the push rod to move, and the push rod drives the limit plate to move, and then the limit plate drives the limit spring and the flexible clamp to move, and the flexible clamp clamps the logging instrument to fix it, so that the logging instrument has better stability when moving, thereby solving the problem that the hoisting device is prone to shaking during movement and the hoisted logging instrument is damaged by bumps.

[0021] The present invention can achieve the goal of arranging a positioning component in the lifting device for coalfield logging equipment when the driving motor rotates forward, the driving motor drives the driving gear to rotate forward through the rotating rod, and then the driving gear drives the first rack to move downward. At this time, the second rack located on the other side moves upward. At this time, the limit member moves to a suitable position, and then the flexible clamp in the limit member clamps the logging instrument, so that the logging instrument has better stability when the device moves. Conversely, when the driving motor is reversed, the driving gear drives the transmission gear to rotate through the meshing connection. Since there are multiple groups of driving gears and transmission gear groups, the transmission gear and the driving gear rotate in the same direction at this time, so that the second rack moves downward, and then the second rack drives the positioning pin to move downward and insert into the soil layer for fixation, so that the device has better stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the inner cavity structure of the mounting plate of the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of the enlarged structure in the middle;

[0026] Figure 5 for Figure 3 A magnified schematic diagram of the structure B in the middle;

[0027] Figure 6 It is a schematic diagram of the structure of the winding assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the positioning component of the present invention;

[0029] Figure 8 for Figure 7 A magnified schematic diagram of the C structure;

[0030] Fig. 9 for Figure 7 Middle D is an enlarged schematic diagram of the structure;

[0031] Fig.10 for Figure 7 A magnified schematic diagram of the structure in middle E.

[0032] In the figure: 1. small crane; 2. winding assembly; 201. mounting base; 202. mounting plate; 203. fixing rod; 204. servo motor; 205. controller; 206. transmission magnetic block; 207. magnetic speed sensor; 208. rotating rod; 209. magnetic adsorption block; 210. limiter; 2101. buckle block; 2102. internal ratchet; 2103. eccentric wheel; 2104. limiting groove; 2105. ratchet groove; 2106. mounting round block; 2107. cover; 211. cable; 212. guide; 2121. mounting bracket; 2122. first guide rod; 2123. mounting base plate; 2124. mounting rod; 2125. second guide rod ; 213, logging instrument; 3, telescopic rod; 4, first universal wheel; 5, positioning assembly; 501, fixed base; 502, limiting sleeve; 503, fixed plate; 504, driving motor; 505, rotating rod; 506, driving gear; 507, first rack; 508, rotating shaft; 509, transmission gear; 510, second rack; 511, positioning pin; 512, limiting member; 5121, first rotating shaft; 5122, second rotating shaft; 5123, first connecting plate; 5124, second connecting plate; 5125, push rod; 5126, limiting plate; 5127, limiting spring; 5128, flexible clamp; 6, second universal wheel; 7, handle; 8, counterweight. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Example: See Figure 1-Figure 10 A lifting device for coalfield logging equipment shown in the figure comprises a small crane 1, a winding assembly 2 is installed at one end of the small crane 1, a telescopic rod 3 is installed at the other end of the small crane 1, wherein two groups of telescopic rods 3 are provided and are respectively located on the outer wall of the small crane 1, a first universal wheel 4 is installed at the bottom of the telescopic rod 3, and a positioning assembly 5 is installed on the outer wall of the telescopic rod 3;

[0035] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The winding assembly 2 includes a mounting base 201, which is mounted at the port of the small crane 1. The outer wall of the mounting base 201 is provided with mounting plates 202 from left to right, and the outer wall of the mounting plate 202 is symmetrically provided with fixing rods 203. A servo motor 204 is mounted on the outer wall of the mounting base 201, and a controller 205 is mounted on the outer wall of the servo motor 204. The driving shaft of the servo motor 204 passes through the mounting plate 202 and extends to the outer wall of the mounting plate 202. A transmission magnetic block 206 is mounted, wherein the cross section of the transmission magnetic block 206 is a concave structure, and the transmission magnetic block 206 is A magnetic speed sensor 207 is installed on one side and on the outer wall of the driving shaft of the servo motor 204. A rotating rod 208 is rotatably connected to the inner wall opposite to the mounting plate 202. One end of the rotating rod 208 penetrates the mounting plate 202 and extends to the outer wall of one side of the mounting plate 202. A magnetic adsorption block 209 is provided. The magnetic adsorption block 209 is plug-in connected to the inner wall of the transmission magnetic block 206, and the magnetic adsorption block 209 and the transmission magnetic block 206 are connected through magnetic coupling. The other end of the rotating rod 208 penetrates the mounting plate 202 and extends to the outer wall of the other side of the mounting plate 202 and is connected to a limiter 210.

[0036] The magnetic speed sensor 207 generates data on the speed of the driving shaft of the servo motor 204 , and then the magnetic speed sensor 207 generates an electrical signal which is transmitted to the controller 205 through a wire, and the controller 205 records the speed of the servo motor 204 .

[0037] In this embodiment, specific reference Figure 5 and Figure 6 The limiter 210 includes a snap block 2101 and an internal ratchet 2102, the snap block 2101 is installed on the outer wall of the rotating rod 208, an eccentric wheel 2103 is sleeved on the outer wall of the snap block 2101, and a limiting groove 2104 is provided on the outer wall of the eccentric wheel 2103 at a position corresponding to the snap block 2101, a ratchet snap groove 2105 is provided on one side of the limiting groove 2104 and on the outer wall of the eccentric wheel 2103, a mounting round block 2106 is provided on the outer wall of the eccentric wheel 2103, a cover shell 2107 is plugged and installed on one side of the internal ratchet 2102 and on the outer wall of the mounting plate 202, a cable 211 is provided on the outer wall of the rotating rod 208, and a guide member 212 is provided on one side of the cable 211 and at the bottom of the mounting base 201.

[0038] In this embodiment, specific reference Figure 2 , Figure 3 , Figure 5 and Figure 6The guide member 212 includes a mounting bracket 2121, which is symmetrically arranged on the bottom outer wall of the mounting base 201. A first guide rod 2122 is symmetrically arranged on the inner wall of the mounting bracket 2121. A mounting base plate 2123 is installed directly below the first guide rod 2122 and on the inner wall of the mounting bracket 2121. Mounting rods 2124 are symmetrically arranged on the base surface of the mounting base plate 2123. A second guide rod 2125 is slidably connected to the outer wall of the mounting rod 2124, wherein the second guide rod 2125 and the first guide rod 2122 form a staggered vertical structure with each other. The guide member 212 is located on one side of the fixed rod 203, and a logging instrument 213 is installed at one end of the cable 211.

[0039] When the cable 211 is lowered, the first guide rod 2122 clamps the cable 211 in the middle to limit the position, and the second guide rod 2125 limits the position of the cable 211 at the same time. The first guide rod 2122 and the second guide rod 2125 cooperate to limit the position of the cable 211.

[0040] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 and Fig.10The positioning assembly 5 includes a fixed base 501, which is provided with two groups and respectively located on the outer wall of the telescopic rod 3. A limiting sleeve 502 is embedded in the outer wall of the fixed base 501, and the limiting sleeve 502 is provided with two groups of symmetrical structures. A fixing plate 503 is symmetrically provided on one side of the limiting sleeve 502 and located on the base surface of the fixed base 501. A driving motor 504 is installed on one side of the fixing plate 503 and located on the base surface of the fixed base 501. A rotating rod 505 is installed on the driving shaft of the driving motor 504. One end of the rotating rod 505 penetrates the fixing plate 503 and extends to the inner wall between the fixing plates 503. A driving gear 506 is installed. A first rack 507 is slidably connected to one side of the driving gear 506 and located on the inner wall of the limiting sleeve 502. The outer wall of the first rack 507 is meshed with a driving gear A rotating shaft 508 is rotatably connected on the inner walls opposite to the wheel 506 and the fixed plate 503, and a transmission gear 509 is installed on the outer wall of the rotating shaft 508. The outer wall of the transmission gear 509 is meshed with the driving gear 506, wherein the rotating shaft 508 is staggered in two groups and is respectively located between the fixed plates 503, and two groups of transmission gears 509 are arranged and the transmission gears 509 are meshed with each other through teeth and grooves. A second rack 510 is slidably connected to one side of the transmission gear 509 and is located on the inner wall of the limiting sleeve 502, and the transmission gear 509 is meshed with the outer wall of the second rack 510. A positioning pin 511 is provided at the bottom of the fixed base 501 and at one end of the second rack 510, wherein the bottom end of the positioning pin 511 is lower than the bottom end of the first rack 507, and a limiting member 512 is installed at the other end of the second rack 510.

[0041] In this embodiment, specific reference Figure 3 , Fig. 9 and Fig.10 The limiting member 512 includes a first rotating shaft 5121 and a second rotating shaft 5122, the first rotating shaft 5121 is rotatably connected to the outer wall of the second rack 510, the outer wall of the first rotating shaft 5121 is rotatably connected with a first connecting plate 5123, the outer wall of the first connecting plate 5123 is rotatably connected with a second connecting plate 5124 through an insertion rod, a push rod 5125 is installed on the outer wall of the second connecting plate 5124, a limiting plate 5126 is installed at one end of the push rod 5125, limiting springs 5127 are arranged in an equidistant array on the outer wall of the limiting plate 5126, and a flexible clamping block 5128 is arranged at one end of the limiting spring 5127, the inner wall of the flexible clamping block 5128 is attached to the outer wall of the logging instrument 213, a second rotating shaft 5122 is installed on one side of the push rod 5125 and located on the outer wall of the second connecting plate 5124, and the second rotating shaft 5122 is rotatably connected to the outer wall of the first rack 507.

[0042] Among them, the bottom of the small crane 1 is symmetrically provided with a second universal wheel 6, and the side wall of the small crane 1 is provided with a handle 7. Under the action of the counterweight 8 installed on the inner wall of the small crane 1, the stability of the device is better. The controller 205 is respectively connected to the servo motor 204, the magnetic speed sensor 207 and the drive motor 504 through wires, and the connection method is electrical connection, so that the device is powered on, and the limit springs 5127 are arranged in an equidistant array on the outer wall of the limit plate 5126, and the limit springs A flexible clamp 5128 is provided at one end of the spring 5127. Under the action of the inner wall of the flexible clamp 5128 being fitted on the outer wall of the well logging instrument 213, since the flexible clamp 5128 is installed on the outer wall of the limit plate 5126 through the limit spring 5127, there is elastic space for the flexible clamp 5128 at this time. When the flexible clamp 5128 fixes the well logging instrument 213, the flexible clamp 5128 has a better clamping effect on the well logging instrument 213 to prevent violent shaking, and will not be clamped too tightly to cause wear and deformation.

[0043] When the lifting device for coalfield logging equipment of this scheme is working, a telescopic rod 3 is installed through the other end of the small crane 1, wherein the telescopic rod 3 is provided with two groups and is respectively located on the outer wall of the small crane 1, a first universal wheel 4 is installed at the bottom of the telescopic rod 3, and a second universal wheel 6 is symmetrically provided at the bottom of the small crane 1, and a handle 7 is provided on the side wall of the small crane 1. It only needs to push the handle 7, and the handle 7 applies thrust to the small crane 1. At the same time, under the joint action of the first universal wheel 4 and the second universal wheel 6, the small crane 1 moves;

[0044] A rotating rod 505 is installed through the driving shaft of the driving motor 504, one end of the rotating rod 505 passes through the fixed plate 503 and extends to the inner wall between the fixed plates 503, and a driving gear 506 is installed, one side of the driving gear 506 is slidably connected with a first rack 507 located on the inner wall of the limiting sleeve 502, and the outer wall of the first rack 507 is meshed with the driving gear 506. When the controller 205 controls the driving motor 504 to rotate, the driving shaft of the driving motor 504 drives the rotating rod 505 to rotate, and then the rotating rod 505 drives the driving gear 506 to rotate, the first rack 507 is slidably connected on the inner wall of the limiting sleeve 502, and the driving gear 506 is meshed with the outer wall of the first rack 507. Under the action, the driving gear 506 applies an upward thrust to the first rack 507, thereby causing the first rack 507 to slide upward on the inner wall of the limiting sleeve 502;

[0045] A rotating shaft 508 is rotatably connected on the inner walls opposite to each other between the fixed plates 503, and a transmission gear 509 is installed on the outer wall of the rotating shaft 508. The outer wall of the transmission gear 509 is meshed with a driving gear 506, wherein the rotating shaft 508 is staggered in two groups and is respectively located between the fixed plates 503, and two groups of transmission gears 509 are arranged and the transmission gears 509 are meshed with each other through teeth and grooves. One side of the transmission gear 509 is slidably connected with a second rack 510 located on the inner wall of the limiting sleeve 502. When the driving motor 504 drives the driving gear 506 to rotate through the rotating rod 505, the driving gear 506 drives the transmission gear 509 to rotate through the meshing connection. Since the transmission gear 509 is arranged in two groups and is meshed with each other, the transmission gear located on one side of the second rack 510 is The rotation direction of the wheel 509 is the same as that of the driving gear 506. At this time, the second rack 510 and the first rack 507 are symmetrical structures. When the first rack 507 moves up, the second rack 510 moves downward. The transmission gear 509 is meshed and connected on the outer wall of the second rack 510. A positioning pin 511 is provided at the bottom of the fixed base 501 and at one end of the second rack 510, wherein the bottom end of the positioning pin 511 is lower than the bottom end of the first rack 507. Under the action of the limiting member 512 installed at the other end of the second rack 510, the second rack 510 drives the positioning pin 511 to move downward, so that the positioning pin 511 is inserted into the soil layer for fixing, and the stability of the device is better, thereby solving the problem of reduced stability of the logging instrument when it is lowered due to the lack of an effective fixing mechanism for the hoisting equipment during operation;

[0046] The first rotating shaft 5121 is rotatably connected to the outer wall of the second rack 510, and the first connecting plate 5123 is rotatably connected to the outer wall of the first rotating shaft 5121. The outer wall of the first connecting plate 5123 is rotatably connected to the second connecting plate 5124 through an insertion rod. A push rod 5125 is installed on the outer wall of the second connecting plate 5124, and a limit plate 5126 is installed at one end of the push rod 5125. Limit springs 5127 are arranged in an equidistant array on the outer wall of the limit plate 5126, and a flexible clamping block 5128 is arranged at one end of the limit spring 5127. The inner wall of the flexible clamping block 5128 is attached to the outer wall of the logging instrument 213. A second rotating shaft 5122 is installed on one side of the push rod 5125 and located on the outer wall of the second connecting plate 5124. The second rotating shaft 5122 is rotatably connected to the outer wall of the first rack 507.

[0047] Based on the above conditions, the rotating rod 505 drives the driving gear 506 to rotate, and the driving gear 506 drives the first rack 507 to move downward;

[0048] When the first rack 507 moves downward, the first rack 507 drives the second connecting plate 5124 to move downward through the second rotating shaft 5122, and at the same time, the second rack 510 drives the first connecting plate 5123 to move upward through the first rotating shaft 5121. At this time, one end of the limiting member 512 is pushed upward by the second rack 510, and at the same time, the other end of the limiting member 512 is pulled downward by the first rack 507. Since the two ends of the limiting member 512 are respectively pushed in the opposite direction, the limiting member 512 drives the second connecting plate 5124 to move upward at the same time. and the first connecting plate 5123 move respectively, and at the same time, the limiting member 512, the second connecting plate 5124 and the first connecting plate 5123 cooperate with each other to form an inclined structure, so that the second connecting plate 5124 drives the push rod 5125 to move, and the push rod 5125 drives the limiting plate 5126 to move, and then the limiting plate 5126 drives the limiting spring 5127 and the flexible clamping block 5128 to move, and the flexible clamping block 5128 clamps and fixes the well logging instrument 213, so that the well logging instrument 213 has better stability when moving;

[0049] A servo motor 204 is mounted on the outer wall of the mounting base 201, and a controller 205 is mounted on the outer wall of the servo motor 204. The drive shaft of the servo motor 204 penetrates the mounting plate 202 and extends to the outer wall of the mounting plate 202. Under the action of the transmission magnet 206, it is only necessary to turn on the switch of the controller 205, and the controller 205 controls the servo motor 204 to operate, so that the drive shaft of the servo motor 204 drives the transmission magnet 206 to rotate. At the same time, a rotating rod 208 is connected to the inner wall opposite to the mounting plate 202. The rotating rod 208 is connected to the inner wall opposite to the mounting plate 202. One end of 08 penetrates the mounting plate 202 and extends to the outer wall of one side of the mounting plate 202, where a magnetic attraction block 209 is provided, wherein the magnetic attraction block 209 is plug-in connected to the inner wall of the transmission magnetic block 206, and the magnetic attraction block 209 and the transmission magnetic block 206 are connected by magnetic coupling. Due to the magnetic coupling connection between the transmission magnetic block 206 and the magnetic attraction block 209, the transmission magnetic block 206 drives the magnetic attraction block 209 to rotate, and then the magnetic attraction block 209 drives the rotating rod 208 to rotate, and the rotating rod 208 lowers the cable 211;

[0050] By installing the buckle block 2101 on the outer wall of the rotating rod 208, the eccentric wheel 2103 is sleeved on the outer wall of the buckle block 2101, and a limiting groove 2104 is provided on the outer wall of the eccentric wheel 2103 at a position corresponding to the buckle block 2101, and a ratchet groove 2105 is provided on one side of the limiting groove 2104 and on the outer wall of the eccentric wheel 2103. When the operation of the servo motor 204 fails and causes the device to overspeed, the rotating rod 208 rotates too fast, thereby causing the rotating rod 208 to drive the eccentric wheel 2103 to rotate through the buckle block 2101. Since the eccentric wheel 2103 rotates too fast, under the action of centrifugal force, the eccentric wheel 2103 rotates on the buckle block 21 01, thereby making the buckle block 2101 slide from one side of the limit slot 2104 to the other side of the limit slot 2104, and the ratchet slot 2105 on the outer wall of the eccentric wheel 2103 is stuck on the inner wall of the internal ratchet wheel 2102. When the ratchet slot 2105 and the internal ratchet wheel 2102 are stuck and fixed, the eccentric wheel 2103 is stuck, and the eccentric wheel 2103 drives the rotating rod 208 to be fixed. The rotating rod 208 stops lowering the cable 211, and the device stops in time. At the same time, because the other end of the rotating rod 208 is magnetically coupled to the inner wall of the transmission magnetic block 206 through the magnetic adsorption block 209, the rotating rod 208 will not cause excessive load on the servo motor 204 when it stops.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for coalfield logging equipment, comprising a small crane (1), characterized in that: A winding assembly (2) is installed at one end of the small crane (1), and a telescopic rod (3) is installed at the other end of the small crane (1), wherein two groups of telescopic rods (3) are provided and are respectively located on the outer wall of the small crane (1), a first universal wheel (4) is installed at the bottom of the telescopic rod (3), and a positioning assembly (5) is installed on the outer wall of the telescopic rod (3); The winding assembly (2) comprises a mounting base (201), the mounting base (201) being mounted at the port of the small crane (1), mounting plates (202) being arranged on the outer wall of the mounting base (201) from left to right, fixing rods (203) being symmetrically arranged on the outer wall of the mounting plate (202), a servo motor (204) being mounted on the outer wall of the mounting base (201), a controller (205) being mounted on the outer wall of the servo motor (204), a driving shaft of the servo motor (204) passing through the mounting plate (202) and extending to the outer wall of the mounting plate (202), a transmission magnetic block (206) being mounted, wherein the cross section of the transmission magnetic block (206) is a concave structure, and the transmission magnetic block (206) is ) and is located on one side of the servo motor (204) and is provided with a magnetic speed sensor (207); a rotating rod (208) is rotatably connected to the inner wall opposite to the mounting plate (202); one end of the rotating rod (208) penetrates the mounting plate (202) and extends to the outer wall of one side of the mounting plate (202) and is provided with a magnetic adsorption block (209); the magnetic adsorption block (209) is pluggably connected to the inner wall of the transmission magnetic block (206), and the magnetic adsorption block (209) and the transmission magnetic block (206) are connected via magnetic coupling; the other end of the rotating rod (208) penetrates the mounting plate (202) and extends to the outer wall of the other side of the mounting plate (202) and is connected to a limiter (210); The limiter (210) comprises a buckle block (2101) and an internal ratchet (2102), wherein the buckle block (2101) is mounted on the outer wall of the rotating rod (208), an eccentric wheel (2103) is sleeved on the outer wall of the buckle block (2101), and a limiting groove (2104) is provided on the outer wall of the eccentric wheel (2103) at a position corresponding to the buckle block (2101), and one side of the limiting groove (2104) is located at the eccentric wheel (2103). ) is provided with a ratchet slot (2105) on its outer wall, a mounting round block (2106) is provided on the outer wall of the eccentric wheel (2103), a cover (2107) is pluggably installed on one side of the internal ratchet wheel (2102) and located on the outer wall of the mounting plate (202), a cable (211) is provided on the outer wall of the rotating rod (208), and a guide member (212) is provided on one side of the cable (211) and located at the bottom of the mounting base (201); The guide member (212) comprises a mounting bracket (2121), wherein the mounting bracket (2121) is symmetrically arranged on the bottom outer wall of the mounting base (201), a first guide rod (2122) is symmetrically arranged on the inner wall of the mounting bracket (2121), a mounting base plate (2123) is installed directly below the first guide rod (2122) and on the inner wall of the mounting bracket (2121), mounting rods (2124) are symmetrically arranged on the base surface of the mounting base plate (2123), a second guide rod (2125) is slidably connected to the outer wall of the mounting rod (2124), wherein the second guide rod (2125) and the first guide rod (2122) are in a staggered vertical structure with each other, the guide member (212) is located on one side of the fixing rod (203), and a well logging instrument (213) is installed at one end of the cable (211).

2. A lifting device for coalfield logging equipment according to claim 1, characterized in that: The positioning assembly (5) comprises a fixed base (501), the fixed base (501) being provided with two groups and being respectively located on the outer wall of the telescopic rod (3), a limiting sleeve (502) being embedded and installed on the outer wall of the fixed base (501), and the limiting sleeve (502) being provided with two groups of symmetrical structures, a fixing plate (503) being symmetrically arranged on one side of the limiting sleeve (502) and being located on the base surface of the fixed base (501), a driving motor (504) being installed on one side of the fixing plate (503) and being located on the base surface of the fixed base (501), and a rotating rod (505) being installed on the driving shaft of the driving motor (504).

3. A lifting device for coalfield logging equipment according to claim 2, characterized in that: One end of the rotating rod (505) passes through the fixed plate (503) and extends to the inner wall between the fixed plates (503) on which a driving gear (506) is installed. One side of the driving gear (506) is located on the inner wall of the limiting sleeve (502) and is slidably connected with a first rack (507). The outer wall of the first rack (507) is meshedly connected with the driving gear (506). A rotating shaft (508) is rotatably connected on the inner walls opposite to each other between the fixed plates (503), and a transmission gear (509) is installed on the outer wall of the rotating shaft (508).

4. The lifting device for coalfield logging equipment according to claim 3 is characterized in that: The outer wall of the transmission gear (509) is meshed with a driving gear (506), wherein two groups of rotating shafts (508) are staggered and respectively located between the fixed plates (503), and two groups of transmission gears (509) are provided, and the transmission gears (509) are meshed with each other through tooth grooves, and a second rack (510) is slidably connected to one side of the transmission gear (509) and located on the inner wall of the limiting sleeve (502), and the outer wall of the second rack (510) is meshed with the transmission gear (509), and a positioning pin (511) is provided at the bottom of the fixed base (501) and located at one end of the second rack (510), wherein the bottom end of the positioning pin (511) is lower than the bottom end of the first rack (507), and a limiting member (512) is installed at the other end of the second rack (510).

5. The lifting device for coalfield logging equipment according to claim 4 is characterized in that: The limiting member (512) includes a first rotating shaft (5121) and a second rotating shaft (5122), the first rotating shaft (5121) is rotatably connected to the outer wall of the second rack (510), the outer wall of the first rotating shaft (5121) is rotatably connected to a first connecting plate (5123), the outer wall of the first connecting plate (5123) is rotatably connected to a second connecting plate (5124) via an insert rod, and a push rod (5125) is installed on the outer wall of the second connecting plate (5124).

6. A lifting device for coalfield logging equipment according to claim 5, characterized in that: A limit plate (5126) is installed at one end of the push rod (5125), and a limit spring (5127) is arranged in an equidistant array on the outer wall of the limit plate (5126), and a flexible clamp (5128) is arranged at one end of the limit spring (5127), and the inner wall of the flexible clamp (5128) is attached to the outer wall of the logging instrument (213). A second rotating shaft (5122) is installed on one side of the push rod (5125) and located on the outer wall of the second connecting plate (5124), and the second rotating shaft (5122) is rotatably connected to the outer wall of the first rack (507).

7. A lifting device for coalfield logging equipment according to claim 6, characterized in that: The bottom of the small crane (1) is symmetrically provided with a second universal wheel (6), and the side wall of the small crane (1) is provided with a handle (7). A counterweight (8) is installed on the inner wall of the small crane (1). The controller (205) is respectively connected to the servo motor (204), the magnetic speed sensor (207) and the drive motor (504) through wires, and the connection method is electrical connection.

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