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565results about "Slitting machines" patented technology

Method and system for preventing cutting interference of coal mining machine based on point cloud and infrared image

The invention discloses a coal cutter cutting interference prevention method and system based on point cloud and infrared images. The method comprises the steps that a radar sensing module and an infrared sensing module are installed; synchronously acquiring three-dimensional point cloud data and infrared image data of the target monitoring area; the three-dimensional point cloud data and the infrared image data are preprocessed, aligned in the time dimension and registered in a space coordinate system; performing feature extraction on the three-dimensional point cloud data and the infrared image data, performing feature fusion, and extracting space attitude parameters of the face guard; carrying out risk grade discrimination, and marking an interference position; and generating a risk avoiding control instruction according to the risk level, and executing a risk avoiding adjustment action. According to the system, a processing module comprises a data preprocessing module, a multi-modal information fusion module, an identification module and a decision control module, and the processing module is connected with a radar sensing module and an infrared sensing module. According to the invention, accurate monitoring and active prevention of the cutting interference state of the side protection plate and the coal mining machine roller can be realized.
Owner:CHINA UNIV OF MINING & TECH +1

Digging and anchoring integrated equipment for coal mine

The digging and anchoring integrated equipment comprises a machine body, an anchoring device and a temporary supporting device, the anchoring device comprises a working table and a first anchoring and protecting assembly, the working table is arranged on the machine body and can move relative to the machine body in the length direction of the machine body, and the first anchoring and protecting assembly is rotationally connected to the working table in the length direction of the machine body; the temporary supporting device comprises a supporting frame and a sliding top plate, the supporting frame is rotationally connected with the machine body, and a first driver is arranged between the supporting frame and the machine body and used for driving the supporting frame to rotate around the width direction of the machine body relative to the machine body; the sliding top plate is slidably connected with the supporting frame, a second driver is arranged between the supporting frame and the sliding top plate, and the second driver is used for driving the sliding top plate to move towards the roadway head-on direction relative to the supporting frame so as to form advanced temporary supporting. According to the invention, zero empty roof can be realized, integrated and automatic operation of roadway tunneling and anchoring operation is completed, and the construction efficiency and quality are greatly improved.
Owner:TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1

Combined guide wheel structure of gold mine mining rope saw cutting machine

The invention relates to the technical field of gold mine mining, in particular to a gold mine mining rope saw cutting machine combined type guide wheel structure which mainly comprises a first fixing column, an anti-disengaging mechanism and a locking mechanism, a guide wheel is rotationally installed at one end of the first fixing column through a bearing, a first sleeve is installed on the outer wall of the first fixing column, and the anti-disengaging mechanism is arranged on the outer side of the guide wheel. And the locking mechanism is arranged on one side of the guide wheel. A pull rod is pulled to drive a moving plate and an L-shaped strip to move and extrude a first elastic part, the L-shaped strip moves out of a limiting groove, two supporting plates and an anti-shelling shell are adjusted to move to proper positions, the pull rod is loosened, the first elastic part pushes the moving plate and the L-shaped strip to move, the L-shaped strip moves to the limiting groove for limiting, and the L-shaped strip, the supporting plates and the anti-shelling shell are fixed in a limiting mode. The rope on the guide wheel is limited and prevented from falling off through the anti-falling shell, the rope cannot be separated from the guide wheel, the walking path of the rope is not prone to deviation, and then the cutting accuracy and efficiency are improved.
Owner:锡林郭勒盟山金白音呼布矿业有限公司 +1

Hard rock lithology identification and cutting parameter self-adaption system based on machine vision

The invention relates to the field of mine intelligent tunneling, and discloses a hard rock lithology identification and cutting parameter self-adaption system based on machine vision, which comprises an image acquisition module, a lithology identification module, a rock hardness mapping module and a self-adaption control module. The image acquisition module is integrated with an air curtain cleaning and dual-mode light supplementing device to obtain a rock surface image of the driving working face; the lithology identification module extracts lithology features by using an adaptive enhancement algorithm and an improved deep learning network; the rock hardness mapping module quantifies and outputs a rock hardness value through a regression model; and the self-adaptive control module dynamically adjusts the rotating speed and the feeding speed of the cutting head according to the parameters, and stabilizes mechanical shock through a parameter smoothing unit. In addition, a feedback optimization module performs closed-loop verification and Kalman filtering fusion on a visual result by using cutting load data. According to the method, the problems of difficulty in lithology identification and lagging of cutting parameter adjustment in the underground high-dust environment are solved.
Owner:WEISHI HEAVY IND CO LTD

A coal mine fully mechanized coal mining face end mining coal cleaning device

This invention relates to a coal cleaning device for the final stage of fully mechanized coal mining faces. The device includes a frame, guide shoes, and support shoes. The support shoes support the upper surface of the shovel plate of a scraper conveyor. The guide shoes slide and guide the scraper conveyor. The device moves relative to the scraper conveyor when pushed or pulled by the coal mining machine. One end of a telescopic frame extends into the frame and slides in a forward-backward direction. The shoveling mechanism is located on the telescopic frame and includes a plow-shaped shovel head and a connecting plate. One end of the connecting plate is hinged to the telescopic frame, and the other end is connected to the plow-shaped shovel head. A telescopic cylinder drives the telescopic frame and the shoveling mechanism to move forward and backward. A lifting cylinder drives the plow-shaped shovel head to lift or lower. The plow-shaped shovel head flips up the accumulated coal and throws it into the scraper conveyor chute. This invention can quickly, safely, and efficiently complete the final stage of coal cleaning in fully mechanized mining faces using mechanical means.
Owner:ZHENGZHOU COAL MINING MACHINERY (GRP) CO LTD

Shearer posture adjusting device, adjusting method and shearer

The present application relates to the technical field of engineering machinery, and provides a coal winning machine posture adjusting device, an adjusting method and a coal winning machine. The coal winning machine posture adjusting device comprises a swing-to-walking mechanism, a direction adjusting mechanism and a control system. The swing-to-walking mechanism is arranged on the coal wall side of the coal winning machine body and is in contact with the bottom surface of the roadway to assist the walking of the coal winning machine body. The direction adjusting mechanism is used to drive the swing-to-walking mechanism to turn and drive the coal winning machine body to turn. The control system is in communication connection with the swing-to-walking mechanism, the direction adjusting mechanism and the posture detection mechanism of the coal winning machine body. The control system controls the swing-to-walking mechanism and the direction adjusting mechanism to act according to the detection signal of the posture detection mechanism. The control system can control the swing-to-walking mechanism and the direction adjusting mechanism to act according to the detection signal of the posture detection mechanism, adjust the walking posture of the coal winning machine body, reduce the additional friction force between the walking wheels of the coal winning machine and the pin rows of the scraper, reduce the output current of the traction motor and accelerate the walking speed.
Owner:SANY HEAVY EQUIP CO LTD

Train type dust falling device for coal mining working face of coal mine

The train type dust falling device comprises a front section train and a rear section train which are arranged on a track of a return airway and connected in series, a horizontal cyclone water film dust remover and an electrostatic dust remover are sequentially arranged on the front section train from front to back, and an air inlet in the front end of the horizontal cyclone water film dust remover is connected with a dust collection pipeline system. A floating dust suction hood, a transfer point dust suction hood and a plurality of working face dust suction hoods are arranged on the dust suction pipeline system, and an electrostatic generator and a counter-rotating axial flow fan are arranged on the rear section of train side by side in the left-right direction. The device can move along with the movement of the coal face, keeps a good dust collection state, and greatly improves the dust collection effect and greatly improves the air environment of the coal face of an underground coal mine in a wet dust collection and electrostatic dust collection combined mode on the premise of ensuring gas safety.
Owner:HENAN POLYTECHNIC UNIV

Coal mining clamping plate device

The utility model discloses a coal mining clamping plate device, which relates to the technical field of coal mining and comprises a base, a baffle I is fixedly connected to the front of the base, a clamping module is slidably connected to the inside of the base, an adjusting module is fixedly connected to the rear of the baffle I, and the clamping module comprises a sliding table nut. When a cable needs to be fixed, the knob is rotated to drive the shifting rod to rotate, then the shifting rod pushes the special-shaped clamping block to be away from the gear and compresses the first limiting block, and when the shifting rod rotates into a corner above the special-shaped clamping block, the shifting rod cannot continue to rotate downwards, so that the cable can be fixed. The first limiting block can push the special-shaped clamping block to extrude the shifting rod so that the shifting rod can be clamped in the corner above the special-shaped clamping block, the special-shaped clamping block can be kept in the state of being separated from the gear, after the upper clamping jaw is opened, the cable is placed into the lower clamping jaw, the upper clamping jaw is rotated to press the cable, and the problem that the adjusting process of a traditional clamping plate device is complex is solved.
Owner:NINGXIA YINXING COAL IND CO LTD

Integral telescopic cutting unit control method and hydraulic system thereof

ActiveCN115929303Bautomatic relaxationSimplify the difficulty of operationSlitting machinesTunnels
The application discloses a kind of integral telescopic cutting part control method and its hydraulic system, integral telescopic cutting part includes the slide rail that can be telescopic action before and after on slide, installation pressure device can be compressed slide rail on slide, the rotary table that can be action left and right is installed above slide rail, rotary table connects the cutting arm that can be action up and down, control method includes: determine current working state, i.e. the telescopic action state that slide rail can be telescopic action before and after, or the cutting action state that rotary table can be action left and right and cutting arm can be action up and down;According to current working state, select compression or release compression slide rail, while limit another action state implementation, i.e. cutting action state, compress slide rail, limit telescopic action state, telescopic action state, release compression slide rail, limit cutting action state.Cutting operation can automatically compress telescopic mechanism, and realize the operation interlock of telescopic operation and cutting operation, even if misoperation also can not cause safety problem, greatly simplify the operation difficulty of worker.
Owner:TAIYUAN INST OF CHINA COAL TECH & ENG GROUP +1

High-yield and high-efficiency cooperative control method and control system for double mining machines and storage medium

The invention provides a high-yield and high-efficiency cooperative control method for double mining machines, which comprises a main coal mining machine, an auxiliary coal mining machine, a scraper conveyer and a hydraulic support, the two coal mining machines are controlled to execute different coal mining tasks in each stage, the work division is clear, the scraper conveyer is ensured to have only one bending area at most by setting the action process, the blockage is avoided, and the working efficiency is improved. Through reasonable work distribution, no-load or overload operation of the scraper conveyer is avoided. According to the high-yield and high-efficiency cooperative control method for the double mining machines, it is guaranteed that the state of a scraper conveyor in double-machine coal mining operation is more stable, jamming is not likely to happen, and overdue no-load or overdue overload operation is not likely to happen, so that it is guaranteed that the four machines are better in adaptability, the collision risk is not likely to happen during double-machine operation, and at least one of the technical targets can be achieved.
Owner:ZHENGMEI MACHINERY TECHNOLOGY R&D CENTER (BEIJING) CO LTD +1

Hard rock cutting pick with composite wear-resistant layer structure

The utility model discloses a hard rock cutting pick with a composite wear-resistant layer structure, which comprises a cutter handle, an alloy cutter head and a conical ring sleeve, and an alloy head is arranged at the top end of the alloy cutter head; and an auxiliary blade is arranged on the outer surface of the alloy head. According to the hard rock cutting pick with the composite wear-resistant layer structure, through the arrangement of the auxiliary blade, the sawtooth blade, the small chamfers, the alloy head and the alloy tool bit, when the hard rock cutting pick is used, the auxiliary blade can firstly make contact with a cut object, mechanical energy cutting can be conducted on the object through the auxiliary blade, and the friction force of the alloy head is reduced; when a certain distance is cut, the sawtooth blade can make contact with a cut object, due to the fact that the small chamfer is arranged at one end of the sawtooth blade, cutter feeding can be facilitated, the friction force of the alloy cutter head is greatly reduced, cutting is facilitated to a certain degree, and the service life of the cutting pick can be prolonged.
Owner:XIANGCHENG SHUANGYU MINING MACHINERY CO LTD

A spiral drilling mining robot and an adaptive cutting control method

ActiveCN120331769BFlexible optimization of operation strategiesEfficient and stable tunneling speedMining devicesConstructionsBorehole miningNitrogen gas
This invention provides a spiral drilling mining robot and an adaptive cutting control method, belonging to the field of mining equipment technology. The technical solution is as follows: a spiral drilling mining robot includes a tracked walking mechanism, a drill rod unit, a power system, a support device, and a sliding platform device; this invention also provides an adaptive cutting control method, including the following steps: first, borehole preparation and gas detection; second, adaptive borehole mining operation; third, drilling completion and equipment reset; the beneficial effects of this invention are: this invention uses a gas concentration sensor on the drill bit to detect the gas concentration in real time and automatically adjusts the nitrogen injection volume, effectively controlling the gas concentration. Simultaneously, the equipment can dynamically adjust the drill bit rotation speed and propulsion speed according to changes in drill bit load and rock hardness, improving tunneling efficiency; furthermore, the tunneling equipment features a modular design, enabling the equipment to flexibly cope with drilling requirements at various depths.
Owner:CHINA UNIV OF MINING & TECH

Coal mining machine onboard mobile operation platform and mounting structure thereof on coal mining machine

The invention relates to an onboard mobile operation platform of a coal mining machine and a mounting structure of the onboard mobile operation platform on the coal mining machine, the mobile operation platform comprises a left platform, a right platform, a platform connecting assembly, a left side outer guide strip, a right side outer guide strip, a mobile oil cylinder and a supporting column, the lower portions of the left side and the right side of the supporting column are provided with a left side inner guiding structure and a right side inner guiding structure respectively, the left platform is in front-back sliding fit with the left side outer guiding strip and the left side inner guiding structure, the right platform is in front-back sliding fit with the right side inner guiding structure and the right side outer guiding strip, and the rear end of the left platform and the rear end of the right platform are connected together through a platform connecting assembly. The front end and the rear end of the movable oil cylinder are hinged to the supporting column and the platform connecting assembly respectively. The installation structure comprises the mobile operation platform and a machine top of the coal mining machine, the left and right side outer guide strips and the supporting columns are detachably and fixedly installed on the machine top, and an operation space is formed between the left and right platforms and a top protection plate. An installation foundation and a flexible operation space can be provided for the drilling machine.
Owner:SHANGHAI TIANDI MINING EQUIP TECH CO LTD +1

Coal mine mining filling tunneling mechanism

The utility model discloses a coal mine mining filling tunneling mechanism in the technical field of coal mine mining, which comprises a tunneling machine body, a plate body and a dust falling box, the dust falling box is fixedly connected to the lower side of the right side wall of the tunneling machine body, and the plate body is fixedly connected to the top of the tunneling machine body. A rubber air bag is fixedly connected to the top of the plate body, a protective top plate is fixedly connected to the top of the rubber air bag, a mounting groove is formed in the middle of the top of the plate body and located on the inner side of the rubber air bag, and a hollow column is fixedly connected to the bottom of the inner cavity wall of the mounting groove. The top of the heading machine body can be protected, damage to the heading machine body caused by broken stones falling from the top of a mine tunnel during mining is avoided, so that the service life of the heading machine body is prolonged, dust generated during mining can be reduced, and the situation that dust drifts in air and is sucked by workers is avoided.
Owner:NEIMENGGU HONGYUAN COAL GRP CO LTD SUNSANGOU COAL MINE

Top coal crushing device and method

The invention relates to the technical field of coal mine crushing and discloses a top coal crushing device and method.The top coal crushing device comprises a top plate, a crushing assembly, a flatness sensing unit and a control unit, and the top plate is used for making contact with top coal; the crushing assembly comprises a plurality of driving crushing heads which are arranged on the top plate and move in a reciprocating manner, and the driving crushing heads are used for applying jacking force to the top coal so as to crush the top coal; the flatness sensing unit is arranged on the top surface of the top plate and is used for collecting flatness information of top coal; the control unit is connected with the active crushing heads and the flatness sensing unit, and the control unit is used for controlling each active crushing head to reciprocate; wherein the control unit controls the different active crushing heads to move upwards by corresponding distances according to flatness information collected by the flatness sensing unit, so that top coal is crushed. According to the top coal crushing device provided by the embodiment of the invention, large coal gangue can be quickly treated through the crushing assembly, and the overall efficiency of thick coal seam mining is improved.
Owner:CCTEG COAL MINING RES INST +1

Leakage-proof mechanism applied to combined tunneling machine external spraying device

This invention belongs to the technical field of mining machinery and equipment, and particularly relates to a leak-proof mechanism for an external spray device of a combined tunneling machine. During operation, the water outlet sprays water mist, and compressed air is delivered into the amplifier cavity from the air inlet. Due to the Coanda effect, the compressed air delivered from the air inlet flows at high speed along the inner annular wall of the amplifier cavity, forming a negative pressure area in the amplifier through hole. This generates a high-speed airflow that is ejected at high speed along the water outlet direction, delivering the water mist sprayed by the water outlet to a more distant area that needs dust suppression. At the same time, the negative pressure area also causes the dust-laden airflow around the air amplifier to flow towards the dust suppression area, drawing a large amount of dust-laden gas into the cavity to fully contact the mist droplets, achieving secondary dust suppression. This optimizes the atomization effect, improves dust suppression efficiency, and the leak-proof mechanism prevents water droplet leakage.
Owner:HUNAN UNIV OF SCI & TECH

NON-ROTATING CUTTING INSERT FOR A CUTTING TOOL

A cutting insert assembly (130) for mounting on a tool holder (104) of a milling machine (100) comprises a cutting tip (132), a cylindrical shank (138) extending from the cutting tip (132) and having a rotation-limiting surface (212), and a spring clamp (214) surrounding a shank body (138). The spring clamp (214) includes a projection (216) configured to interact with the rotation-limiting surface (212) of the shank (138) to limit the rotation of the shank (138) relative to the spring clamp (214). The spring clamp (214) includes a contracted configuration and an extended configuration, and in both the contracted and extended configurations, the projection (216) interacts with the rotation-limiting surface (212).
Owner:CATERPILLAR PAVING PROD INC

Surface drill rig and control system and method thereof

The application discloses an open-air drilling machine and a control system and method thereof, and belongs to the technical field of engineering machinery. The open-air drilling machine control system comprises a rock drill, a drill rod and a connecting sleeve. The open-air drilling machine control system comprises a hole depth sensor for collecting state information of a current hole; an execution device for realizing disconnection or connection between the drill rod and the drill rod according to an input electric signal; and a control device for sending a control signal to the execution device according to a control signal sent by the hole depth sensor to realize control of the execution device. The open-air drilling machine control system is an important part of realizing digital mines and unmanned mines. The open-air drilling machine control system can be used for subsequent automatic positioning and automatic walking, and can realize real unmanned operation. Moreover, the open-air drilling machine control system can be used for program setting, unified and optimized operation process and standardized operation.
Owner:ATLAS COPCO (NANJING) CONSTR & MINING EQUIP CO LTD

Long-distance power supply system and method for coal mining machines

This invention relates to a long-distance power supply system and method for a coal mining machine. The system includes a mobile substation, a remote switch control device, a main cable, and a coal mining machine connected in sequence. The remote switch control device includes a frequency converter and first to fourth switches. The coal mining machine includes left and right cutting motors and a third contactor, a traction transformer, a control transformer, a UPS power supply, and a coal mining machine control system connected in sequence. The left and right cutting motors are respectively connected to the upstream line of the third contactor via the first and second contactors. The method includes first turning on the UPS power supply to power on the coal mining machine control system, pressing the start buttons of the left and right cutting motors to engage the first and second contactors, pressing the main start button to close the first, second, and third remote switches in sequence, soft-starting the left and right cutting motors, closing the fourth switch, opening the third switch, and closing the third contactor. This invention enables long-distance power supply to the coal mining machine while ensuring the normal start-up of the cutting motors.
Owner:CHANGSHU BRANCH OF CHINA COAL SCI & IND GRP SHANGHAI RES INST CO LTD

Coal mining machine roller control method and device, storage medium and electronic equipment

The embodiment of the invention provides a control method and device for a roller of a coal mining machine, a storage medium and electronic equipment. The control method comprises the steps that the current running direction angle of the roller of the coal mining machine on the current working face is obtained, and the target adjusting angle of a cutting roller is obtained based on adjacent key cutting points; obtaining the height difference between the adjacent cutting key cutting points, determining the height difference threshold value of the cutting roller, and obtaining the cutting target adjustment angle of the cutting roller based on the relation between the height difference between the adjacent cutting key cutting points and the height difference threshold value of the cutting roller and the relation between the current operation direction angle of the roller and the cutting target adjustment angle of the cutting roller. And the height and the traction speed of the cutting roller are adjusted. According to the embodiment of the invention, a plurality of groups of scientific and quantitative height difference threshold value calculation models are established, and the difference value between the motion direction angle of the roller and the target direction angle is combined, so that an accurate and self-adaptive threshold value judgment standard is provided for the heightening, lowering or non-adjusting actions of the roller, and the precision and stability of roller heightening control are improved.
Owner:BEIJING TIANMA INTELLIGENT CONTROL TECHNOLOGY CO LTD +1

Active crushing control method of hydraulic cutter type top coal caving support

The invention discloses an active crushing control method of a hydraulic cutter type top coal caving support, and belongs to the technical field of coal mine intelligent control. The method comprises five steps of frame moving and locking, parameter setting, active crushing, pressure maintaining and expanding and retracting and resetting, crushing parameters can be adjusted in a self-adaptive mode, an extension structure is compatible, and dual-mode control and platform butt joint are supported. The method solves the problems of poor crushing and low recovery rate of traditional passive top coal caving, is suitable for various hard coal working faces, and can be used for transforming new supports and old supports.
Owner:孙英天

Anti-blocking spraying equipment of coal mine heading machine

The utility model discloses anti-blocking spraying equipment of a coal mine heading machine, which relates to the field of coal mine construction equipment and comprises a water tank and a spraying head, an atomizing plate is mounted on the surface of the output end of the spraying head, a flow guide pipe is mounted at the upper end of the water tank, and two sides of the output end of the flow guide pipe are connected with flow dividing pipes. The flow guide pipe and the flow dividing pipe are both of a telescopic structure, one end of the flow dividing pipe is connected with a connecting cylinder, one end of the spraying head is connected with the connecting cylinder, the bottom end of the flow dividing pipe is connected with a drainage pipe, the drainage pipe is of a telescopic structure, the output end of the drainage pipe is connected with a water outlet plate, and the upper portion of the water outlet plate is matched with the atomization plate in position. One side of the mounting frame is connected with a fixing plate; according to the anti-blocking spraying equipment of the coal mine heading machine, the lower end of the flow dividing pipe is connected with the drainage pipe, a spraying water source part is drained to the water outlet plate when necessary, the surface of the atomizing plate is washed and cleaned from bottom to top, and dust, impurities and the like attached to the surface of the atomizing plate are prevented from blocking the spraying head.
Owner:WUXI YUCHUANG MACHINERY CO LTD

Combined type drilling machine cutting tooth and tooth distribution structure for hard rock stratum

The invention discloses a combined type drilling machine cutting tooth and tooth distribution structure for a hard rock stratum. The combined type drilling machine cutting tooth and tooth distribution structure comprises a cutting tooth column body, a working head, a buffering protection assembly, a connecting base and an internal reinforcing structure. The cutting tooth column body is of a cylindrical structure, the first end of the cutting tooth column body is connected with the working head, and the second end of the cutting tooth column body is connected with the connecting base through welding; the buffer protection assembly is arranged on the outer side wall of the cutting pick cylinder in a sleeving mode, the first end of the buffer protection assembly abuts against the end face of the working head, and the second end of the buffer protection assembly abuts against the end face of the connecting base; the internal reinforcing structure is embedded in an internal cavity of the cutting pick cylinder and extends in the axial direction of the cutting pick cylinder. The durability of the cutting pick is improved through buffer protection and an internal reinforcing structure, the working stability and precision are optimized by means of reasonable pick arrangement and positioning calibration, and various problems of traditional equipment are solved.
Owner:WUHAN CONSTR ENG SPECIAL ENG CO LTD

A downwardly inclined fan-shaped medium-length hole rock drilling sublevel open stope and subsequent filling mining method

The present application relates to a kind of downward vein external fan-shaped medium-length hole rock drilling segmented open stope subsequent filling mining method, belong to mining technical field.The mining method in the present application is applicable to 20~30m thick ore body inclination;The ore body is divided into multiple sections according to certain height, each section is a stage, and a plurality of subsections are divided in stage, overall stoping direction is from top to bottom, and a plurality of stope are divided out vertically ore body trend;The present application is by to mining, cutting and stoping step specially structured arrangement and has corresponding operation method, so that rock drilling, ore drawing are all operated in vein external roadway, the stability of vein external roadway can be better controlled by the influence of mining and filling operation, and the security guarantee degree is higher;Meanwhile, mining preparation engineering, cutting engineering quantity in the present application are compared with the existing technology in access type filling, stratified filling mining process and are optimized and reduced, so as to improve operation efficiency and reduce cost.
Owner:YUNNAN CHIHONG ZN & GE CO LTD

Self-adaptive lubricating and cooling device for cutting arm of coal mine heading machine

ActiveCN224200988Ufully lubricatedAvoid lubrication blind spotsEngine sealsSlitting machinesLubricationCoal
The utility model discloses a self-adaptive lubricating and cooling device for a cutting arm of a coal mine heading machine, and relates to the technical field of lubricating and cooling devices. The connecting cylinder is rotatably arranged outside the cutting main shaft in a sleeving manner; the front bearing is mounted between the inner wall of the front end of the connecting cylinder and the cutting main shaft; the rear bearing is mounted between the inner wall of the rear end of the connecting cylinder and the cutting main shaft; the oil storage cavity is formed among the inner wall of the connecting cylinder, the outer wall of the cutting main shaft and the axial end surfaces of the front bearing and the rear bearing; the communicating piece is arranged in the middle of the oil storage cavity; the communicating piece comprises an annular sealing ring and a communicating pipe; the annular sealing ring is arranged in the middle of the oil storage cavity and divides the oil storage cavity into a front cavity and a rear cavity; according to the utility model, partial flow and distribution of lubricating oil in the front chamber and the rear chamber are realized through the communicating pipe, so that the front bearing and the rear bearing can still be fully lubricated even if the cutting main shaft is in a complex posture of lifting or downward cutting, and a lubricating blind area is avoided.
Owner:张文雄

Mechanical arm structure for small coal mining machine and coal mining machine

The utility model provides a mechanical arm structure for a small coal mining machine and the coal mining machine, and relates to the technical field of coal mining machines, the mechanical arm structure comprises a supporting piece, a crank arm and a telescopic piece, the crank arm comprises a first arm section and a second arm section which are connected, one end, deviating from the second arm section, of the first arm section is rotationally connected with the supporting piece, and a first rotation center is formed. The end, away from the first arm section, of the second arm section is used for being connected with a machine head and forming a mounting center, and the end, close to the mounting center, of the second arm section inclines downwards. One end of the telescopic piece is rotationally connected with the supporting piece to form a second rotating center, and the other end of the telescopic piece is rotationally connected with the first arm section to form a third rotating center so as to drive the machine head to deflect up and down. According to the mechanical arm structure provided by the embodiment of the invention, by optimizing the sizes of all the parts, on the premise that a large excavation range is guaranteed, the structural size of the mechanical arm is greatly shortened, the gravity center is lowered, the weight is reduced, and the strength, stability and the like are improved.
Owner:HUNAN UNIV OF SCI & TECH

Coal mine underground spraying-curtain integrated efficient dust falling system

The invention discloses a coal mine underground spraying-curtain integrated efficient dust falling system, and relates to the technical field of coal mine underground dust prevention, the coal mine underground spraying-curtain integrated efficient dust falling system comprises a stope face, an air return way is arranged on one side of the stope face, a transportation way is arranged on the other side of the stope face, and an underground comprehensive dust prevention control center is arranged in the transportation way; the underground comprehensive dustproof control center comprises a stope face dedusting control module, a return airway dedusting control module and a parameter monitoring device; a mobile power station is arranged above the underground comprehensive dustproof control center, and a magnetized water production device is arranged above the mobile power station. According to the underground coal mine spraying-curtain integrated efficient dust falling system adopting the structure, the first spraying mechanism and the second spraying mechanism are adopted for dual dust removal, the dust removal effect is better, the monitoring center is adopted for remotely controlling operation of the underground comprehensive dust removal control system, dust removal equipment is intelligently switched on and off, and the dust removal efficiency is improved. And water resources and use cost are saved.
Owner:SHANXI INST OF TECH

Working face cut-through position cutter return control system and method based on multi-modal feature fusion

The invention discloses a working face cut-through position cutter return control system and method based on multi-modal feature fusion. The system comprises a dual-light fusion camera, a coal mining machine control mechanism, an AI analysis server, a data analysis server and a dust sensor. The method comprises the following steps that S1, when a reset sensor corresponds to a reset magnet, an encoder is reset, and meanwhile, the numerical value of the encoder is transmitted to a data acquisition module; s2, the dust sensor transmits a dust concentration value to an AI analysis server; s3, transmitting the shot original image to an AI analysis server by the dual-light fusion camera, and identifying the position relation between the roller of the coal mining machine and the cut-through position; s4, the AI analysis server transmits an identification result to a data acquisition module; s5, the data acquisition module operates a process driving engine according to the numerical value of the encoder and the identification result, and the process driving engine controls the working state of the coal mining machine; and S6, after the coal mining machine is shut down, coal mining machine roller height adjustment and cutter returning operation are carried out.
Owner:ZHENGZHOU HENGDA INTELLIGENT CONTROL TECHNOLOGY CO LTD

Coal mining machine roller convenient to clean

The utility model relates to the field of coal mining machines, and discloses a coal mining machine drum convenient to clean, which comprises a motor shaft, a traction ring is fixedly mounted at the left end of the motor shaft, a crushing ring I is fixedly mounted on the left side of the traction ring, and an inner drum body is fixedly mounted in the middle of the left side of the crushing ring I; a second lead screw is installed on the left side of the inner cylinder in a meshed mode, a second crushing ring is installed in the middle of the second lead screw in a meshed mode, and a first lead screw is installed in the second crushing ring in a meshed mode. By arranging the second crushing ring, rotating the second lead screw and the first lead screw, the second lead screw and the first lead screw are separated from the interiors of the inner cylinder body and the outer cylinder body respectively, so that fixation of the second crushing ring is relieved, the right side of the outer cylinder body is inserted into the first crushing ring, the second crushing ring is removed, and the outer cylinder body is pulled out from the interior of the first crushing ring, so that fixation of the second crushing ring is relieved. Therefore, the spiral blade and the scraper conveying end disc on the surface of the outer barrel are separated, the part, needing to be cleaned, of the roller can be separated and detached, and operation is easy and convenient.
Owner:SHANGHAI QINGHUAN ELECTRIC CO LTD