51results about "Earth drilling and mining" patented technology

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.

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.

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 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 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.

A method for determining a viscosity of undefined petroleum fractions includes obtaining an experimental data set representing a viscosity of a fluid in a well. The method also includes determining a correlation of the viscosity. The method also includes determining a discontinuity in the correlation. The method also includes generating synthetic extrapolation data based upon the discontinuity. The method also includes determining a resulting correlation based upon the synthetic extrapolation data and a training portion of the experimental data set. The method also includes determining the viscosity of undefined petroleum fractions of the fluid in the well based at least in part on the resulting correlation.

The application discloses a correction method and system for an intelligent drilling calculation model, and comprises the following steps: obtaining drilling static data and real drilling measurement data of a current drilling well, and based on the data, calculating drilling state parameters by using an original drilling calculation model used in a current drilling process; monitoring real-time deviation between downhole states calculated by the model and actual measurement states according to the drilling state parameters and the real drilling measurement data, and analyzing reasons for current deviation according to the real-time deviation monitoring result; and when the current deviation is caused by the model calculation, correcting the original drilling calculation model by evaluating a current deviation amount. The application can continuously improve calculation accuracy of the drilling calculation model in the drilling process, and meanwhile, realizes automatic correction of the model.

The application discloses an inclined shaft construction anti-rollover device and an application method thereof. A track vehicle can move in an inclined shaft along a track through external traction. An anti-rollover mechanism is installed on a working platform of the track vehicle, and a slag removing mechanism is also installed on the track vehicle. When the track vehicle moves forward and backward along the track under the action of external traction, the track vehicle drives the anti-rollover mechanism and the slag removing mechanism to move in the inclined shaft. The slag removing mechanism can rotate on the working platform to perform slag removing work on the wall surface around the parking position of the track vehicle. When the slag removing mechanism works, an intelligent control strategy is adopted to adjust the support pressure of a hydraulic cylinder of the anti-rollover mechanism according to the stress of the slag removing mechanism and the stress of the track vehicle, so that the track vehicle is prevented from rolling over due to the force between the slag removing mechanism and the wall surface of the inclined shaft during the slag removing work. The application has the advantages of simple structure and high reliability, and the safety and working performance of the track vehicle and the working device are considered.

This invention relates to a prefabricated sluice gate, comprising an upper support member, the upper support member including two spaced-apart side plates, with a plurality of sets of ribs spaced along the longitudinal direction between the two side plates, and a plurality of notches distributed along the longitudinal direction on the upper end face of each set of ribs; and a lower support member, the lower support member including two spaced-apart side plates, the two side plates being spaced along the longitudinal direction between the two side plates, and a plurality of sets of ribs distributed along the longitudinal direction on the lower end face of each set of ribs. This invention provides a prefabricated sluice gate structure, constructed from two integrally formed support members arranged in a cross pattern. On the one hand, it eliminates the risk of weld cracking due to impact; on the other hand, the prefabricated sluice gate structure allows for direct overlap, facilitating installation and benefiting downhole operations.

A fracture density model (FDM) system may predict the fragmentation size distribution for a blast. The FDM system may generate a model comprising a plurality of volume elements. The FDM system may determine pre-existing joint fractures in the volume elements. The FDM system may also simulate blasts and track fractures, for each of the volume elements, caused by the shock wave of the blast and a shock wave reflected off of a free face of the model. The FDM system may combine the pre-existing joint fractures and the blast induced fractures to determine a predicted fragmentation size for the distinct elements.

The utility model discloses a mobile device for the integrated box of pressurized air self-help and water supply rescue, including storage mechanism, the storage mechanism includes storage frame, the middle part equal interval of storage frame front is passed and is equipped with the through -opening, and the through -opening is equipped with the movable plate, and with the mutual resistance between integrated box, the inside bottom end central position of storage frame is rotatably connected with the roller axle, and the middle part equal interval of storage frame top is equipped with the opening, the opening is equipped with the isolation board, and with the mutual resistance between the integrated box of storage, mobile mechanism, mobile mechanism includes the mobile wheel of symmetrical setting below storage frame. The utility model does not need artificial handling, and after moving to the position of storage frame, with the rolling of multiple roller axles, can conveniently save the labor to complete the movement to the other position of storage frame, can conveniently follow the feeding of the remaining integrated box of this close distance, saves time and energy, does not need the artificial handling of multiple positions, reduces the operation intensity, and is convenient to use, satisfies the demand.

The utility model relates to a kind of door pushing mechanism of equipment shell, it is characterized by: including seat plate being respectively provided in upper and lower, at least one group of door pushing assembly is equipped between the seat plate, the door pushing assembly includes mirror image first door pushing and second door pushing, first door pushing one end is hingedly connected with second door pushing one end, first door pushing is respectively provided with first pivot in upper and lower relative to second door pushing one end, each first pivot is respectively rotationally equipped with first sliding base, second door pushing is respectively provided with second pivot in upper and lower relative to first door pushing one end, each second pivot is respectively rotationally equipped with second sliding base, first sliding base and second sliding base are respectively slidably connected with corresponding seat plate, first door pushing and second door pushing can be rotated to be located on same straight line or parallel to each other, expand opening space, facilitate operation.

This invention belongs to the technical field of multi-functional vehicles for underground coal mines, specifically a quick-connect self-locking method for the working mechanism of a series of multi-functional vehicles for underground coal mines. The device includes a switching device body, comprising a first side connected to the power vehicle body and a second side connected to the working mechanism. The upper part of the first side of the switching device body is detachably connected to the power vehicle body connection mechanism, and the lower part of the first side of the switching device body is provided with a power-side insert plate connecting plate, which is detachably connected to the power vehicle body connection mechanism; the power vehicle body connection mechanism is fixedly connected to the power vehicle body; the upper part of the second side of the switching device body is connected to the upper round steel of the working mechanism, and the lower part of the second side of the switching device body is detachably connected to the working mechanism; the device is controlled by a control system. This invention expands the vehicle's functions, improves vehicle utilization, enhances the versatility of the working mechanism of multi-functional vehicles for underground coal mines, and saves on coal mine equipment purchase costs.

The present application relates to the technical field of coal mine underground transportation equipment, and particularly relates to a fully mechanized coal mining face crossheading single rail train system and advancing method, wherein the fully mechanized coal mining face crossheading single rail train system comprises a trailer, a train set and a pipe cable telescopic device connected in sequence, the tail of the pipe cable telescopic device is connected with a reversed loader, a track is laid under the train set, the train set travels along the track, the trailer is connected with the track through a cross connector and drags the track to advance; the advancing method comprises the steps of pulling and moving the track, pulling and moving the train set, advancing the working face and cyclically advancing. The present application realizes the rapid and continuous movement of the train through the long-distance alternate movement of the track and the train, without the need of frequently disassembling and laying tracks and the need of winch steel wire rope traction, can effectively reduce the labor intensity and operation time of workers and improve the safety of train operation.

The invention provides a method of improving the accuracy of a reservoir model. The method comprising obtaining tracer test data associated with the reservoir and constructing a model of the reservoir. The method comprising determining a model tracer residence time distribution data set for the reservoir and calculating at least one moment of the model tracer residence time distribution data set. The method comprising calculating at least one moment of residence time distribution data set from the tracer test data and comparing the at least one moment of the measurement data set and the at least one moment of the model data set to assess the accuracy of the model.

This invention relates to the field of mining equipment technology, specifically to a hydraulic support lateral movement platform. The platform includes a base plate located at the working face inside the mine, and a translation unit. The base plate is equipped with a translation unit for moving the hydraulic support to be installed from the working face to the installation location. A fixing unit is also provided on the translation unit for securing the moving hydraulic support. An auxiliary movement unit is also provided on the translation unit to prevent excessive shear load on the translation unit. This invention utilizes the coordinated movement of hydraulic cylinders and slide rails, with the top plate sliding based on the base plate. This allows the hydraulic support to be installed to slide smoothly and safely from the working face to the installation location on the top plate. Jacks and limit blocks on the top plate stably fix the hydraulic support on the top plate during its movement, further ensuring the safety and stability of the hydraulic support's movement and transportation.

This invention discloses an online monitoring device and method for the condition of a circular link chain in a mining scraper conveyor, belonging to the field of online monitoring technology for mining scraper conveyors. The device includes a support frame, an X-ray detector, an X-ray emitter, a light source base, and a rotary encoder. The support frame is fixed to the tail of the scraper conveyor and supports the various components of the monitoring device. An X-ray detector is positioned above the circular link chain and is fitted to the lower surface of the support frame. An X-ray emitter is positioned opposite the X-ray detector below the middle plate at the tail, and is fixedly mounted via the light source base. The X-ray emitter emits X-rays upwards. A rotary encoder is installed on the sprocket shaft, which detects changes in the sprocket shaft's rotation angle in real time. This invention uses X-ray scanning to obtain information about damage and cracks in the circular link chain, solving the problem of crack detection and demonstrating sensitivity to vertical cracks. It also provides high imaging accuracy for the circular link chain.

The present application relates to a kind of underground sandbox moving device, it is related to coal mine tool technical field, including along the ground moving of underground moving frame, horizontal sliding connection in the moving frame and with the sliding insertion of moving frame bottom in underground sandbox sliding insertion support and set in the moving frame and in the vertical direction lifting sliding insertion support lifting assembly, the moving frame includes two groups of moving support that are horizontally spaced parallel arrangement, setting in the moving support lower side end close to the position of two end portions Traveling pulley, horizontally connected to the connecting frame of two moving support one end and set in the moving handle of moving support upper side end, two moving support and the connecting frame between forming for the insertion of underground sandbox moving station, the sliding insertion support is provided with two groups and is respectively connected to the moving support in the vertical direction length of moving support Horizontal sliding connection in the moving support.It has beneficial effect to make the moving of underground fire-fighting sandbox more convenient and fast.

This utility model discloses an inclined shaft operation trolley, including a trolley body. The trolley body has multiple platforms spaced apart along its direction of travel. When the trolley body is located in the inclined shaft, the platforms are horizontally arranged. At least one platform has a telescopic top support on its upper surface and a telescopic bottom support on its lower surface. The telescopic top support can extend relative to the top wall of the trolley body facing the inclined shaft to partially embed itself in the top of the inclined shaft, and the telescopic bottom support can extend relative to the bottom wall of the trolley body facing the inclined shaft to partially embed itself in the bottom of the inclined shaft. All telescopic top and bottom supports are distributed on at least two platforms. This utility model ensures stable support for the mechanically integrated mobile platform trolley during static operation, ensuring that the mobile platform trolley can establish a sufficiently rigid connection structure and static friction with the tunnel face during operation, reducing the load on the wire rope, absorbing vibrations and impacts generated during operation, and bearing part of the weight.

This invention provides a power module for a monorail crane control system, including a DC power input circuit, a DC power input module, a switching power supply, and a pre-charge board. The DC power input module charges the inverter core, and the switching power supply provides DC power to the switching power supply board, the main contactor control circuit, and the pre-charge control circuit. The main contactor control circuit is used to control the main contactor to engage or disengage. The pre-charge control circuit is used to suppress inrush current. The fan control circuit is used to control the operation of the fan, which is used to dissipate heat from the core. This invention optimizes the surge suppression and voltage protection of the charging circuit to ensure the stability of the monorail crane control system.

The utility model relates to the technical field of second-conveying belt reversed loaders, in particular to an unloading lap joint device suitable for a second-conveying belt reversed loader, which is arranged between the second-conveying belt reversed loader and a scraper conveyor and comprises a support frame arranged at the bottom of a frame of the second-conveying belt reversed loader. The bottom of the supporting frame is rotationally provided with two walking wheels, the two walking wheels are located on the two sides of the two-conveying-belt reversed loader respectively, the axial direction of each walking wheel is perpendicular to the conveying direction of the two-conveying-belt reversed loader, each walking wheel is in lap joint with the top of a chute body of the scraper conveyor chute, the end face of the outer side of each walking wheel is connected with a stopping structure, and the stopping structures are arranged on the two sides of the two-conveying-belt reversed loader respectively. The outer edge of the stopping structure protrudes out of the outer circumferential face of the walking wheel, and the stopping structure can prevent the walking wheel from being separated from the top of a chute body of the scraper conveyor chute. Compared with the prior art, the utility model has the advantages of high safety, stronger anti-seismic property, high transportation efficiency and lower installation difficulty.

The application provides a coal mine underground unit support carrying robot, and belongs to the technical field of underground transportation equipment, and comprises a carrying mechanism, a main frame, a hydraulic system, an engine assembly and a crawler chassis assembly; the carrying mechanism, the hydraulic system and the engine assembly are arranged on the main frame, and the crawler chassis assembly is arranged on both sides of the main frame; the carrying mechanism comprises a bracket, a vertical lifting frame, a vertical driving part, a horizontal moving platform, a horizontal driving part, a support shovel plate, a rotating shaft, a turnover driving part, a telescopic supporting leg and a supporting leg turnover part. The application solves the technical problems of the existing unit support carrying technology, such as winch traction, complex operation, low efficiency and hidden safety hazards.

This utility model relates to a mining unit support transport robot, including a unit support transport arm assembly. The unit support transport arm assembly includes a first walking unit, which is equipped with a transport mechanical arm. The transport mechanical arm includes a vertical lifting arm, the bottom of which is connected to the first walking unit, and the top of which is connected to a horizontally arranged lateral arm. The bottom of the vertical lifting arm is connected to the first walking unit through a rotating mechanism, or the top of the vertical lifting arm is connected to the lateral arm through a rotating mechanism. The lateral arm includes a fixed arm, and the two ends of the fixed arm are telescopically connected to lateral arms or swing-connected to lateral arms. The vertical lifting arm, the rotating mechanism, and the lateral arms are connected to a power control system. The transport robot of this utility model can simultaneously transport or lift two unit supports, which can simplify the unit support transport procedure, improve the unit support transport efficiency, and realize intelligent control.

The utility model discloses a tunnel car line passageway trolley hole horizontal shifting device belongs to the field of tunnel construction technology, including support board, the top of support board is equipped with a plurality of second threaded holes, and the one side fixed mounting of support board has the battery, and the below of support board is provided with two mounting plates, and the inboard of mounting plate is equipped with first threaded hole, and is provided with mobile fixing device between two mounting plates, and is connected through the accommodation lighting device between support board and mobile fixing device, the utility model discloses through the cooperation of mobile fixing device, and staff can need the time through the cooperation of screw rod and moving block etc. structure to the trolley on support board horizontal shifting, thereby guaranteed the effect of horizontal shifting, and staff can need the time through the cooperation of electric lifting rod and plug cone etc. structure to the position of device temporary fixed, and then improved the working capacity of device.

The invention discloses a protection structure for a feed opening of a draw shaft, relates to the technical field of underground equipment, and aims to solve the problems of underground blasting splashing protection, mineral aggregate falling prevention during maintenance of a vibratory ore drawing machine and emergency blowout protection. The rotary type or telescopic type gate assembly comprises a base, a rotary hydraulic cylinder, a cantilever and a first telescopic flashboard, and the first flashboard is provided with an anti-disengaging device which is clamped with a clamping opening of the vibration ore drawing machine; and the telescopic gate plate comprises a gate plate II and a hydraulic cylinder for driving the gate plate II. The blanking opening can be rapidly closed, the blanking opening sealing device is suitable for blanking openings of different specifications or compact spaces, the protection sealing performance is high, the impact resistance is good, operation is convenient and fast, underground operation safety can be guaranteed, and the mining efficiency is improved.

"A self-moving coal bunker and its supporting system and implementation method for rapid coal roadway excavation" belongs to the field of complete sets of equipment and technical methods for coal mine roadway excavation. The mechanical horizontal coal bunker (4) and other equipment are arranged behind the near-horizontal rapid excavation equipment (1) to realize the automatic adaptation of the length of the coal flow buffer, continuous transportation and ventilation, power supply, water supply and communication pipelines with the equipment, realize the real-time extension of the tail of the telescopic belt conveyor, realize the planned operation management of the supporting system based on the 1m interval of the tunneling support, and facilitate the continuity of the tunneling equipment (1) in every 5m operation cycle. The supporting system includes the horizontal coal bunker (4), equipment vehicle (3), straddle transfer conveyor (2) and self-extending tail (5), etc. The equipment vehicle (3) and the horizontal coal bunker (4) are combined to form the self-moving coal bunker. The implementation and self-moving method of each part of the self-moving coal bunker are explained, as well as the mutual coordination of every 50m operation cycle, every 5m operation cycle and every 1m operation cycle, and the normal operation method of the telescopic belt conveyor tail extending 5m×10m distance autonomously.

This invention relates to the field of control technology, and particularly to an adaptive control method for coal mine scraper conveyors that integrates machine vision. First, prior geological data, real-time working conditions, and real-time pose data of the scraper conveyor are acquired. These are then integrated to construct and update a fused digital map, assigning geological and working condition labels to the current pose. A mapping library is queried to obtain historically optimal correction parameters and working condition matching degrees. Correction commands are generated by combining real-time machine vision data with the correction data. Feedback data is collected and scored, and the mapping library is updated to achieve adaptive correction. By implementing this invention, the dynamic correlation between coal mine scraper conveyor deviation control and geological conditions and mining progress can be achieved, possessing both self-learning capabilities and real-time adaptability.

This utility model discloses a gantry-type folding support for a transport roadway, comprising two bidirectional hydraulic cylinders. Each bidirectional hydraulic cylinder includes an upper telescopic part that extends upwards and a lower telescopic part that extends downwards. A crossbeam is fixed to the upper end of the upper telescopic part of each bidirectional hydraulic cylinder, and a support seat is fixed to the lower telescopic part of each bidirectional hydraulic cylinder. Guide grooves are provided on both sides of each bidirectional hydraulic cylinder. This utility model can effectively ensure safe production in coal mines and improve production efficiency.