326results about "Earth drilling and mining" patented technology

The invention discloses a coal slipping hole with a multi-stage buffering function, and relates to the technical field of coal mine transportation, the coal slipping hole comprises a feeding port and a communicating pipe arranged at the bottom end of the feeding port, and the communicating pipe can be communicated with a discharging port of a raw coal pulverizer through the feeding port; further, the crushed raw coal can enter an inner cavity of the communicating pipe; the dust removal buffering mechanism is used for removing dust in the crushed raw coal, by arranging the dust removal buffering mechanism, the raw coal fragments discharged from the communicating pipe can be buffered, meanwhile, dust and dust in the raw coal can be absorbed and collected, and dust and dust removal work is achieved along with raw coal accumulation; and the anti-blocking mechanism is used for preventing raw coal from blocking in the dust removal buffering mechanism, and the wrapping box is arranged on the outer surface of the anti-blocking mechanism, so that the effect of multi-stage buffering of the raw coal during raw coal transportation is achieved.

The aspects of the disclosed embodiments relate to a system for transferring a crawler chassis work machine, wherein the system includesan articulated frame steered transfer vehicle with a tow point, at least one dump hinge implemented with a transverse pivot shaft, a dump bed articulated with thee dump hinge, and a support point placed at a distance below the dump hinge,a low trailer with a platform for supporting the work machine on the low trailer during transfer, and a drawbar for fastening the low trailer pivotally to the tow point for towing the low trailer with the transfer vehicle,a draw arrangement supported to the pivot shaft and the support point non-rotatably with a torque arm included in the draw arrangement, wherein the draw arrangement includes a draw element for connecting the low trailer to the transfer vehicle with the draw arrangement.

The invention discloses an underground material intelligent transportation auxiliary system based on magnetic navigation and an AGV. The underground material intelligent transportation auxiliary system comprises a navigation system, a safety monitoring system, a dispatching system and a control system. The navigation system is used for outputting positioning information data of the traction machine head and transmitting the positioning information data to the control system. The safety monitoring system is used for transmitting obstacle signal data, gas concentration data and mine car load data to the control system. The dispatching system is used for outputting a traction machine head dispatching instruction to the control system. The control system receives traction machine head real-time positioning information data transmitted by the navigation system, obstacle signal data / gas concentration data / mine car load data transmitted by the safety monitoring system and dispatching instruction data transmitted by the dispatching system, and outputs a control instruction to the execution mechanism; the executing mechanism comprises an electric control steering device, an electric control braking device and an electric control accelerator device and is used for executing the control instruction transmitted by the control unit, controlling steering and braking of the traction machine head and driving according to the set speed.

The invention discloses a CNN-LSTM fused geothermal exploitation productivity optimization prediction system, which belongs to the technical field of geothermal productivity prediction, and comprises the following process modules: S1, data acquisition; s1-1, geological exploration equipment; s1-2, geothermal well monitoring equipment is used; s1-3, monitoring equipment of the heating system; s2, data preprocessing; s2-1, a missing value processing unit; s2-2, an abnormal value detection unit; s2-3, carrying out unit normalization; s3, a feature screening module; s3-1, a correlation analysis unit; and S4, a model construction module. The CNN-LSTM fused geothermal exploitation productivity optimization prediction system not only can realize comprehensive data coverage so that the model can accurately capture dynamic changes of a geothermal system, but also can reduce redundant variables through feature screening so as to realize accurate prediction, dynamic optimization and intelligent regulation and control of geothermal exploitation productivity; high-precision, high-efficiency and high-adaptability technical support is provided for scientific development of geothermal energy, and the geothermal energy is promoted to advance towards the predictable, controllable and sustainable direction.

The invention relates to a protection device for preventing iron from being wound into a belt conveyor, and belongs to the technical field of belt conveyors. Comprising a frame, two I-shaped supports and two moving blocks are arranged at the head end of the frame in a sliding mode, two transmission rollers distributed up and down are rotationally arranged between the two I-shaped supports, an adjusting roller is rotationally arranged between the two moving blocks, and a loading frame is arranged between the upper ends of the two I-shaped supports; the left side and the right side of the head end of the frame are each fixedly provided with a fixing base, a row of supporting rollers are arranged in each fixing base in a sliding mode, and a first linkage mechanism is arranged between the supporting rollers and the loading frame. A second linkage mechanism is arranged between the I-shaped bracket on one side and the moving block; the problem that coal accumulation is formed at the machine head end of the belt conveyor when supporting materials are detached at present is solved.

A system for managing well site operations comprising a well site operations module, a chain of blocks of a distributed network, and a sensor bank and control module. The operations module generates earth model variables using a physics model, well log variables or seismic variables, or both, and a trained AI / ML algorithmic model. The chain of blocks comprises a plurality of subsequent blocks. Each subsequent block comprises a well site entry and a hash value of a previous well site entry. A well site entry comprises transacted operation control variables. The well site operations module generates production operation control variables or development operation control variables from earth model variables. The well site entry can also include transacted earth model variables and sensor variables. The sensor bank and control module provides well log variables and the operations module couples control variables to the control module to control well site equipment.

A movable meeting platform for a tunnel comprises a slope trolley, a slope track, a flat trolley, a high platform and a meeting track, the tunnel track is arranged on the tunnel, the slope trolley and the flat trolley are movably arranged on the tunnel track, the slope track is arranged on the slope trolley, the high platform is arranged on the flat trolley, and the meeting track is arranged on the slope trolley. The meeting track is arranged on the high platform, and the slope track is in butt joint with the meeting track. According to the utility model, the slope trolley and the flat trolley are arranged, and the slope trolley and the flat trolley can move by utilizing the original track so as to realize the integral movement of the meeting platform, so that the meeting platform can be moved to other positions of a tunnel for use without repeated assembly and disassembly, thereby effectively improving the construction efficiency, shortening the construction period and saving the construction cost; in addition, the original track in the tunnel does not need to be dismantled, and therefore waste of manpower and material resources caused by dismantling of the original track is avoided.

Techniques for measuring well systems using tube waves may include performing a simulation of a stage of the well system based, at least in part, on stage design characteristics. The techniques may further include determining expected stage characteristics based, at least in part, the simulation. The techniques may further include generating measured stage characteristics based, at least in part, on a tube wave signal corresponding to a tube wave that occurred in the well system. The techniques may further include determining at least one stage efficiency metric based, at least in part, on the expected stage characteristics and the measured stage characteristics.

The invention discloses a solid potassic salt mine underground screening and crushing integrated ore storage bin system, and belongs to the technical field of solid potassic salt mine mining. The system is composed of a roadway type raw ore bin, a feeding chamber and a vertically-arranged screening and crushing chamber. The raw ore bin is communicated with the main transportation roadway and is internally provided with a bulldozer; the feeding chamber is provided with a surge bin and a screw feeder; a linear vibrating screen and a double-geared-roller crusher are arranged in the screening and crushing chamber. The core of the method is that oversize coarse grain materials are returned to a surge bin through an oversize transfer belt conveyor to form closed-loop crushing circulation, and it is ensured that the ore removal granularity is smaller than or equal to 20 mm. The problem that sylvite ore is prone to deliquescence and hardening is fundamentally solved through the roadway type ore storage bin, underground storage, screening and crushing integrated operation is achieved, the ore directly enters an ore dressing, decomposing and crystallizing workshop after being lifted to the ground, the ground ore dressing links are reduced, occupied ground sites are reduced, the working efficiency and the system reliability are improved, and the production cost is reduced. The method is especially suitable for efficient mining of deliquescent solid potassic salt ore.

A fully-mechanized coal mining hydraulic support transfer device comprises a supporting seat used for bearing a disassembled fully-mechanized coal mining hydraulic support, two opposite indicating grooves are formed in the supporting seat, the placing position can be determined based on the indicating grooves when the disassembled fully-mechanized coal mining hydraulic support is placed on the supporting seat, and a plurality of wheels and a plurality of supporting plates are arranged at the bottom of the supporting seat. The supporting base is provided with two opposite vertical plates in the advancing direction of the supporting base, the supporting plate and the vertical plates extend towards the lower side of the supporting base, and gaps exist between the supporting plate and the ground and between the vertical plates and the ground. The placing position of the disassembled fully-mechanized mining hydraulic support can be determined according to indication of the indication groove, it is guaranteed that the gravity center of the disassembled fully-mechanized mining hydraulic support is located at a proper position, and the stability of the transfer device is enhanced.

This utility model discloses a chute liner for mining, comprising a steel plate. The bottom of the steel plate is cast with low-carbon alloy steel, and the upper part is cast with high-chromium alloy. Hard alloy rods are embedded within the high-chromium alloy. Both the steel plate and the low-carbon alloy steel have an arc-shaped structure. During liner casting, the steel plate needs to be embedded within a foam-made mold layer, and the surface of the steel plate needs to be ground and pickled to ensure it is rust-free. This invention solves the problem that many current large-scale mine chute liners are produced using only high-chromium cast iron. The bottom of the chute liner and the chute body are both arc-shaped, and if the fit between the liner and the chute body is not tight, voids will occur. The liner is easily cracked under the impact of stones, requiring the addition of filler during installation, increasing the installation difficulty. Furthermore, high-chromium cast iron has high wear resistance but poor machinability.

The invention belongs to the technical field of underground roadway pipeline installation, and particularly relates to a robot suitable for coal mine underground roadway pipeline installation, a translation power source is fixed on a transport vehicle chassis, and the translation power source drives a movable sliding table to reciprocate in the direction perpendicular to the traveling direction of a transport vehicle through a translation transmission mechanism; the rotating power source is fixed to the movable sliding table and drives the vertical lifting mechanism to rotate through the rotating transmission mechanism. One end of the forking clamping hand is rotationally connected with the output end of the vertical lifting mechanism, the other end of the forking clamping hand is a forking pipeline clamping end, the inclined mechanism is installed on the vertical lifting mechanism, the output end of the inclined mechanism is connected with one end of the forking clamping hand, and the forking clamping hand is driven to drive a clamped pipeline to do pitching motion; temporary brackets are symmetrically arranged on the front side and the rear side of the translation mechanism and fixed to a transport vehicle chassis. The device has the characteristics of small structural space and wide moving range.

The invention relates to the technical field of transportation equipment accessory devices, in particular to a mining transportation device and a transportation method thereof.The mining transportation device comprises a mounting plate and folding assemblies, and the folding assemblies are evenly mounted on the mounting plate; the folding assembly comprises an overturning mechanism, buckling assemblies, an extending device, a stabilizing structure and a supporting assembly, a shaft seat is arranged on the mounting plate, the overturning mechanism penetrates through the shaft seat and is rotationally connected with the mounting plate, the buckling assemblies are uniformly mounted on the overturning mechanism, and the bottom end of the extending device is connected with the top end of the overturning mechanism. The top end of the stabilizing structure is connected with the bottom end of the mounting plate, and the top end of the supporting assembly is connected with the bottom end of the mounting plate.

The utility model discloses a detachable anchor net transport vehicle which comprises a flat car body, the flat car body comprises a fixed supporting plate and a movable supporting plate, a main sliding rail is arranged on the inner side of the fixed supporting plate, and a sliding block is arranged on the outer side of the movable supporting plate. Four movable stand columns are arranged above the flat car body, and cross beams are connected between the adjacent movable stand columns. A baffle is connected between the flat car body and each cross beam, and one end of each baffle is hinged to the corresponding cross beam. The upper surface, located in the containing space, of the flat car body is provided with a pair of storage racks in parallel, and a plurality of vertically-arranged anti-skid nails are evenly distributed on the pair of storage racks. The width of the flat car body can be adjusted according to the length of a carried anchor net. Meanwhile, the anchor net is arranged on the storage rack in the containing space defined by the movable stand columns, net edges are prevented from hurting vehicle coupling personnel, limiting is conducted through the anti-skid nails, and the overall stability and safety in the transportation process are improved.

This invention discloses a sealing device for underground conveyor belt ventilation doors in coal mines. It includes a conveyor belt passing through a ventilation door wall, with a sealing device installed at the opening of the ventilation door where the conveyor belt passes through the ventilation door wall. The sealing device includes a fixed frame, with a lower baffle plate at the lower end of the fixed frame. The lower baffle plate has a through hole for the return conveyor belt. A follow-up adjustment component is installed at the lower part of the upper baffle plate to adjust the sealing distance according to different cross-sectional heights of the material in the conveyor belt. This invention, by installing a control follow-up adjustment component at the lower part of the upper baffle plate of the conveyor belt ventilation door sealing device, which can adapt to changes in the height of coal on the conveyor belt, precisely adjusts the sealing distance based on real-time changes in the pressure difference of the intersecting roadway. This fundamentally solves the problem of material blockage on the conveyor belt during coal transport, maximizing the sealing of coal and achieving stable ventilation operation in the intersecting roadway.

The invention relates to a hydrate exploitation tubular column mechanical analysis method and device based on an actual structure and a marine environment load, a medium and equipment. The method comprises the steps that a hydrate exploitation tubular column is simplified according to actual working conditions; establishing a hydrate exploitation string motion differential equation by adopting a Hamiltonian variation principle; according to the basic parameters of the marine environment and the actual configuration parameters of the hydrate exploitation pipe column, calculating and analyzing by adopting a Morison equation to obtain a marine environment load and a load borne by the hydrate exploitation pipe column, and substituting the marine environment load and the load borne by the hydrate exploitation pipe column into a motion differential equation of the hydrate exploitation pipe column; and converting the motion differential equation of the hydrate exploitation tubular column after the marine environment load and the load borne by the hydrate exploitation tubular column are substituted into a kinetic equation of the hydrate exploitation tubular column which can be iteratively solved by a program, and obtaining the mechanical property response of the hydrate exploitation tubular column through coupling iteration.

The invention is suitable for the technical field of automatic control of mining auxiliary transportation equipment, and provides an underground monorail crane predictive control method and system based on a digital road spectrum, and the method comprises the following steps: obtaining a position and a road spectrum; a parameter online identification step; a target speed dynamic correction step; a composite torque instruction generation step; a driving execution and braking cooperation step; the method has the beneficial effects that speed self-adaptive correction is realized through road spectrum pre-reading and parameter online identification, and the smooth torque is output in combination with composite predictive control, so that pure-electric-drive stable speed regulation of the monorail crane is realized. According to the scheme, instability slipping under complex working conditions is effectively overcome, the safety risk that mechanical braking intervention is triggered due to the fact that the speed is out of control is avoided, and the response speed, the operation stability and the intrinsic safety level of a whole machine system are remarkably improved.

The invention provides a double-locking control method for a hydraulic lifting gap bridge. According to the double-locking control method for the hydraulic lifting gap bridge, zero falling risk of the reversed loader pedestrian gap bridge under the condition that a hydraulic system fails or is powered off can be achieved, and the operation safety and the system stability are remarkably improved through a double-redundancy mechanism of hydraulic locking and electromagnetic locking and high-precision closed-loop control.

The invention relates to the technical field of self-moving tail leveling, and discloses a mine belt conveyor self-moving tail position and posture leveling control method which comprises the following steps that the pitch angle in the length direction and the roll angle in the width direction of a self-moving tail are collected; with the supporting height of one hydraulic cylinder of the self-moving tail as a reference datum, the pitch angle and the distance between the two hydraulic cylinders in the length direction of the self-moving tail are used for calculating the pitch correction amount; the rolling correction amount is calculated according to the rolling angle and the distance between the two hydraulic cylinders in the width direction of the self-moving machine tail; calculating the total relative height deviation of each hydraulic cylinder supporting point relative to the reference point by adopting a linear superposition mode according to the pitching correction and the rolling correction; according to all the total relative height deviations, the height adjusting amount of all the hydraulic cylinders relative to the reference quantity is calculated; according to the method, the control algorithm is simplified, the calculation redundancy is reduced, the leveling response speed is increased, and the stability and safety of coal transportation are guaranteed.

Method for protecting a loading vehicle (100) from hitting the pit roof (2) of a mine during a dumping operation, comprising the steps of: - defining a safety space (110) having a safety height (SH) from the ground, said safety space being a collision-free space for said loading vehicle during said dumping operation; - defining at least one reference point of said loading vehicle, said at least one reference point being at risk of hitting the pit roof of said mine during said dumping operation; - detecting a dumping movement at a dumping site, wherein material from a bucket of said loading vehicle is removed into a dumping target; - allowing said mining vehicle to move after said dumping movement if each defined reference point is below said safety height.

The utility model relates to a conveying pipeline for conveying materials in a mine, which belongs to the technical field of mine conveying and comprises a pipeline body and a bent position arranged on the pipeline body, and the pipeline body is provided with an accumulation cleaning structure at the bent position. The accumulation removing structure comprises a water tank installed on the pipeline body, a water pump is installed on the water tank, a first water pipe communicated with the interior of the water tank is installed at the input end of the water pump, a second water pipe is installed at the output end of the water pump, and the other end of the second water pipe is communicated with a manifold. The multiple ends, away from the second water pipe, of the manifold communicate with the interior of the pipeline body, and a first electromagnetic valve is installed on the second water pipe. By arranging the accumulation clearing structure and starting the water pump, water in the water tank is flushed into the inner wall in the bent position, so that the effect of flushing the bent position of the pipeline body is achieved, and the situation that particles in slurry are prone to being deposited under the action of gravity and centrifugal force in the process of the bent position of the pipeline is avoided as much as possible.

The invention relates to the technical field of coal mine fully-mechanized coal mining equipment, in particular to a coal mine fully-mechanized coal mining face self-moving type equipment train. Rectangular grooves are formed in the front and rear sides of the middles of a plurality of sequentially-arranged supporting plates correspondingly, and rails are fixed to the front and rear ends of the top faces of the supporting plates; the rail clamping assembly comprises a base fixed to the middle of the bottom face of the flat car, rail clamping mechanisms with the top ends slidably clamped to the two sides of the middle of the base and a driving mechanism. Brake blocks are fixed to the bottoms of the rail clamping mechanisms. The third lug seats are fixed to the two sides of the middle of the top face of the bottom plate, the bottom ends of piston rods of the jacking oil cylinders are connected to the third lug seats, and the top ends of the piston cylinders are fixed to the bottom face of the flat car. The two ends of the trolley moving oil cylinder are connected to the first lugs corresponding to the two adjacent flat cars correspondingly. The two ends of the plate moving oil cylinder are connected to the second lug seats corresponding to the two adjacent supporting plates correspondingly. The rigid connecting piece is used for connecting two adjacent flat cars; the problem that the rail equipment train on the fully mechanized coal mining face is difficult to safely and efficiently move is well solved.

The utility model discloses a vertical transportation device in a tunnel. The vertical transportation device comprises a lifting platform, guide rails vertically arranged on the two sides of the lifting platform and a driving assembly used for driving the lifting platform to vertically ascend and descend. The driving assembly comprises hydraulic driving mechanisms arranged on the two sides of the guide rail and used for driving the vertical push rod to move and pulley mechanisms fixed to the top end of the vertical push rod and capable of sliding along the guide rail, and the hydraulic driving mechanisms drive the push rod to vertically ascend and descend and drive the pulley mechanisms to vertically move. The lifting platform is further driven to lift through a rope penetrating through the pulley; the utility model can effectively solve the problems of large working face height difference and difficult material transportation in a subsurface tunnel, adopts hydraulic pressure as driving power and mechanical operation, is simple to operate and high in safety, and can effectively improve the transportation efficiency in the tunnel.

The application discloses a kind of faulted dissolution body reservoir oil well producing depth acquisition method, device, equipment and medium.Faulted dissolution body reservoir oil well producing depth acquisition method includes: obtaining the temperature well testing monitoring data of target faulted dissolution body reservoir oil well;Temperature well testing monitoring data is handled, and actual temperature well testing interpretation curve is obtained;Temperature well testing model of target faulted dissolution body reservoir oil well is constructed, and the theoretical temperature well testing interpretation curve corresponding to multiple heat transfer distances is obtained based on temperature well testing model;Comparative analysis actual temperature well testing interpretation curve and theoretical temperature well testing interpretation curve, the heat transfer distance corresponding to the theoretical temperature well testing interpretation curve most matched with actual temperature well testing interpretation curve is determined as the producing depth of target faulted dissolution body reservoir oil well.Using the present application can reduce the uncertainty of faulted dissolution body reservoir producing depth calculation, improve the accuracy of producing depth calculation.

The invention discloses a protection device for absorbing kinetic energy of out-of-control transportation equipment in a mine inclined drift, and belongs to the technical field of safety equipment devices under mines. The protection device comprises an inclined shaft, a shaft station, a rail and a plurality of protection assemblies arranged along the rail at intervals. The protection assembly comprises a fixed shaft, an outer rotating cylinder, an impeller, a flow guide ring and an overrun clutch. The outer rotating drum sleeves the outer side of the fixed shaft through a bearing, and a closed columnar cavity is formed between the outer rotating drum and the fixed shaft and is filled with high-viscosity damping liquid; the impeller is installed on the fixed shaft and located in the cavity. The flow guide ring is fixed on the fixed shaft; the overrun clutch is connected with the outer drum and the impeller. When out-of-control equipment impacts the outer drum at a high speed, the overrun clutch is combined to drive the impeller to rotate at a high speed, the damping fluid is stirred to generate strong vortex and shearing under the action of the flow deflectors, and impact kinetic energy is continuously converted into heat energy to be dissipated; the device effectively solves the problems that an existing inclined drift anti-sliding-down device depends on friction or elastic deformation, springback exists, the energy consumption efficiency is limited, and the maintenance cost is high.

The tail self-moving device of the clamping rail type mining belt conveyor comprises a self-moving tail, symmetrical installation blocks are fixedly connected to one side of the self-moving tail, symmetrical side plates are arranged below the symmetrical installation blocks, the bottoms of the symmetrical side plates are jointly and fixedly connected with a bottom plate, and the bottom plate is fixedly connected with the bottom of the self-moving tail. A positioning plate and a movable plate are connected between the symmetrical side plates in a sliding mode, a driving mechanism for driving the positioning plate to move horizontally is arranged in the middle of an inner cavity of each side plate, and each driving mechanism comprises a driving block. When the positioning plate and the movable plate push slag, the positioning plate, the movable plate, the arc-shaped baffle and the bearing bin jointly form a ring shape, in the rotating process of the feeding plate, the slag can be pushed to move in an inner cavity of the ring shape till the slag moves to a notch in the upper end of the bearing bin and finally falls into the inner cavity of the bearing bin, and cleaning of the slag in a roadway is completed; the influence of the slag on the moving process of the self-moving tail is avoided, and meanwhile, the stability of the self-moving tail in the working process is ensured.

The utility model discloses a system for transporting floor gangue at a floor heave of an air return roadway. The gradient of the air return roadway is 3-15 degrees. The system comprises a chain block, a first hook of the chain block is hooked on an anchor cable on the side wall of one side of a roadway, and a second hook of the chain block is hooked on an anchor cable on the side wall of the other side of the roadway; one end of the steel wire rope is fixed to a chain of the chain block, and the other end of the steel wire rope climbs along the air return roadway and is fixed to an anchor rope on the side wall of any side of the roadway on the slope; the sliding mechanisms are uniformly hung on the steel wire ropes, bottom plate gangues generated after bottom pulling from the bottom heaving position of the air return roadway are hung at the lower ends of the sliding mechanisms, and the sliding mechanisms are used for sliding from the slope of the air return roadway to the slope bottom along the steel wire ropes so as to transport the bottom plate gangues to the slope bottom; according to the utility model, the condition of carrying or transporting the gangue manually can be greatly avoided, and the gangue can be unloaded only by walking along with the sliding mechanism manually, so that the working efficiency is greatly improved, and meanwhile, the working intensity is reduced.

The utility model belongs to the field of mining equipment, and relates to a telescopic machine body and a belt conveyor, the telescopic machine body comprises a plurality of carrier roller supporting parts, the carrier roller supporting parts comprise carrier roller supporting frames, and the carrier roller supporting frames are rotatably connected with first carrier roller sets matched with a conveying belt; the two sides of the bottom of the carrier roller supporting frame are rotationally connected with rolling wheels correspondingly. The left sides and the right sides of every two adjacent carrier roller supporting parts are connected through the corresponding telescopic pieces. The telescopic piece comprises a telescopic cylinder and a telescopic rod piece movably connected with the telescopic cylinder, and one end of the telescopic rod piece is movably arranged in the telescopic cylinder in a penetrating mode. After the structure is adopted, the telescopic device has the beneficial effects that the telescopic rod piece and the telescopic cylinder body are matched in a drawing and inserting manner, so that the whole machine body can be prevented from toppling or inclining during stretching or unfolding; in addition, the design of a first limiting block, a second connecting block and a third limiting block is adopted, so that the telescopic machine body has a guiding effect when being unfolded or retracted, and the telescopic machine body cannot topple over.

A mining mobile bicycle comprises a bearing platform, a steering assembly and a wheel assembly, the wheel assembly is rotationally connected with the bearing platform through the steering assembly, the rotating axis between the wheel assembly and the bearing platform is a second rotating axis, the top face of the bearing platform is a bearing plane, and the second rotating axis is perpendicular to the bearing plane. The wheel assembly comprises an axle and wheel bodies, the axle is arranged on the steering assembly, the two sides of the axle are each provided with one wheel body, the wheel body on any side is correspondingly in rolling fit with one guide rail, the axle is rotationally connected with the steering assembly, the axle and the wheel bodies rotate synchronously, and each guide rail is provided with at least one arc-shaped section. The annular wall of each roller is a first rolling surface, the first rolling surfaces are conical surfaces, the first rolling surfaces of the rollers on the two sides are designed to be conical surfaces, and the diameters of the first rolling surfaces of the contact points of the rollers on the two sides and the corresponding guide rails are continuously and automatically adjusted till the angular speeds of the rollers on the two sides are equal, so that the structural complexity of the wheel assembly is simplified, and the mining moving train set is further provided.

The utility model relates to the technical field of mine mining, in particular to a mine underground mining buoyancy lifting system which comprises a buoy internally bearing materials, the buoy is arranged in a haulage roadway, the end of the haulage roadway is communicated with a feeding bin, a feeding gate is arranged between the haulage roadway and the feeding bin, and the haulage roadway is communicated with the feeding bin. The top end of the feeding bin is communicated with the lifting shaft, an isolation gate is arranged between the feeding bin and the lifting shaft, the feeding bin and the lifting shaft form a vertical shaft, when materials are transported, firstly, a backflow gate is opened, a hydraulic pump is started, buoyancy liquid is pumped into the feeding bin to the bottom of a transportation roadway, the materials are placed in a buoy, and then the materials are conveyed to the bottom of the transportation roadway. The feeding gate is opened, the floating cylinder is placed in the feeding bin, the feeding gate is closed, the isolation gate is opened, buoyancy liquid continues to be pumped in, the floating cylinder enters the lifting shaft under the action of buoyancy until the floating cylinder reaches the top end of the lifting shaft, material lifting is achieved, and then the working efficiency of material transportation is greatly improved.