380 results about "Mine tunnel" patented technology

The invention discloses an intelligent integrated automatic pollution discharge, spray and dust suppression system for a coal mine tunnel, and relates to the technical field of automation. The system comprises a double-channel sensing assembly, a central controller, a mine communication link and an integrated pollution discharge spraying terminal group, the central controller obtains a dust image and a ground height image at the same time in combination with the double-channel sensing assembly, generates a roadway working condition grid map, completes dust level marking and ground height marking, extracts a dust cluster and a transition zone on the basis, and loads a pollution discharge component list. Constructing a descending chain from the outer edge of the dust cluster, selecting a ridge chain backbone, finally generating a cooperative control instruction set, issuing the cooperative control instruction set to the integrated pollution discharge spraying terminal group, and carrying out snapshot acceptance check by using a dual-channel sensing assembly after execution. According to the invention, accurate dust control, smooth sewage discharge and high resource utilization rate can be ensured, and the stability and long-term effectiveness of system operation can be maintained in a complex environment.

The invention discloses a coal mine tunnel surrounding rock three-dimensional intelligent sensing method and system. The sensing method comprises the following steps: S10, constructing a coal mine tunnel space three-dimensional sensing system based on three-dimensional laser full-section scanning and discrete measuring point real-time sensing, and obtaining a tunnel monitoring parameter data set through the sensing system; s20, constructing a roadway surface deformation prediction model based on real-time sensing data and a roadway point cloud redistribution model driven by prediction data according to the characteristics of the parameter data set; and S30, dynamically visualizing the roadway and the deformation point cloud data of the roadway by using the roadway surface deformation prediction model based on the real-time sensing data and the roadway point cloud redistribution model driven by the prediction data.

The invention discloses a coal mine tunneling roadway advanced geological exploration and ground stress inversion method, particularly relates to the technical field of seismic signal processing in geophysical exploration, and is used for solving the problems of geological exploration signal distortion and insufficient stress inversion precision caused by strong noise interference of tunneling equipment in the prior art. Rock mass vibration signals are collected through an optical fiber sensor arranged on a roadway wall, equipment noise characteristics are identified through spectral analysis, a quantitative mapping relation between working condition parameters and noise characteristics is established, a noise reference time period is determined according to the quantitative mapping relation, a spatial coherence characteristic template is constructed, high-coherence noise components are inhibited through template comparison, and the noise reference time period is determined according to the spatial coherence characteristic template. Finally, the geological structure and stress field distribution in front of the working face are inverted based on the purified seismic wave signals, a stress concentration area and a disaster risk area are identified, the signal-to-noise ratio of the seismic signals in the strong noise environment and the reliability of the geological inversion result are effectively improved, and accurate technical support is provided for safe mining of a coal mine.

The invention provides an intelligent and efficient centralized dust control system and method for a coal mine driving face. The intelligent and efficient dust collection and control system for the coal mine driving face comprises an air draft part, a ventilation part and an intelligent air curtain adjusting assembly. The air draft part comprises an air draft barrel and an exhaust fan, and the exhaust fan is connected with the air draft barrel; the ventilation part comprises a ventilation barrel, an air guide plate, an arc-shaped fan cover and a ventilator; an end part air outlet and at least one side part air outlet are formed in the end part of the ventilating barrel; the end air outlet comprises an axial opening and a plurality of side openings, and a grid frame is arranged between the air deflector and the ventilator; the intelligent air curtain adjusting assembly comprises a driver and a plurality of switch plates, the switch plates correspond to the fan cover air outlets of the arc-shaped fan cover in a one-to-one mode, the output end of the driver is in transmission connection with the switch plates, and the ventilator and the driver are used for adjusting the first air curtain. According to the intelligent and efficient dust collection and control system for the coal mine driving working face, the ventilation and dust falling effects can be improved.

The invention belongs to the technical field of data processing, and provides a roadway contour extraction method, system, equipment and medium based on three-dimensional point cloud in order to solve the problems of inaccuracy, low efficiency and the like in existing coal mine roadway feature extraction. Combined noise filtering is carried out on a space formed by connecting angular points of fitting contours on adjacent slices, so that scattered noise and useless shielding are effectively reduced, and the data definition and reliability are improved; based on neighborhood calculation perpendicularity features, a top plate, the ground and the side wall of the roadway are recognized, and non-roadway structure data such as pipelines are accurately removed in combination with a cylinder fitting method and a plane fitting method, so that the accuracy of roadway contour extraction is ensured; and fitting the outermost plane based on the farthest points of the point clouds on the upper, lower, left and right surfaces by adopting a segmentation-projection method, and extracting irregular roadway contours from the top surface, the ground and the side surfaces to realize refined roadway contour extraction.

The invention belongs to the technical field of coal mine tunneling equipment positioning, and provides a method and a system for positioning a tunneling and anchoring all-in-one machine in a coal mine tunneling roadway in order to solve the problems of error accumulation, environmental interference and system reliability existing in a traditional underground positioning mode. The method comprises the following steps: acquiring multi-source sensing data acquired by a multi-source sensor array deployed on a digging and anchoring all-in-one machine; performing time synchronization and space synchronization processing on the multi-source sensing data to obtain a fusion data set under a unified timestamp and a unified coordinate system; and inputting the fusion data set into an improved Kalman filtering framework for data fusion, performing distance correction by using a mahalanobis distance, and determining a real-time pose state of the driving and anchoring all-in-one machine according to a data fusion result and a distance correction result. According to the invention, the positioning precision, the system robustness and the reliability of the digging and anchoring all-in-one machine under extremely severe working conditions are obviously improved, and the inherent defects of large accumulative error, easiness in environmental interference and easiness in failure in a traditional single sensor positioning mode are effectively overcome.

The utility model relates to the technical field of coal mine tunnels, in particular to a coal mine tunnel surface displacement observation device which comprises a loading and unloading assembly and an observation assembly. The loading and unloading assembly comprises a sleeve, the first threaded rod is sleeved with the sleeve, and a supporting connecting rod is hinged to the bottom end of the sleeve. The observation assembly comprises a top plate and a bottom plate, and a first threaded rod is fixed in a butt joint sleeve above the top plate; the upper portion of the second threaded rod is fixedly connected with a worm gear, the lower portion of the top plate is connected with a worm, the worm is meshed with the worm gear, the middle of the second threaded rod is in threaded connection with a lifting piece, the lower portion of the lifting piece is rotationally connected with a rotating ring, and the outer side of the rotating ring is fixedly connected with a horizontal connecting rod which is connected with a mounting block. A spiral guide rod is further arranged between the top plate and the bottom plate, the spiral guide rod is in sliding connection with a mounting block, and a displacement measuring instrument is mounted on the mounting block; and a connecting anchor rod is fixedly connected below the bottom plate. The displacement observation device can be flexibly assembled and disassembled, and the observation angle and height can be adjusted.

The invention relates to the technical field of intelligent mine and vehicle safety, in particular to a vehicle collision prediction method and prediction system for a mine laneway environment. The vehicle collision prediction method for the mine laneway environment comprises the following steps: constructing a static laneway environment map based on a mine digital map; at each time step t, constructing a dynamic vehicle interaction diagram according to the vehicle positioning information; extracting the spatial-temporal characteristics of the dynamic vehicle interaction diagram and the state characteristics of the driver, fusing the spatial-temporal characteristics and the state characteristics to form a comprehensive characteristic vector, and outputting a predicted value of the running speed of the current target vehicle at the next moment through a regression layer; and judging whether a collision risk exists or not according to the deviation between the predicted value of the vehicle speed and the real speed. According to the method, the space-time diagram neural network is constructed, vehicle dynamic interaction, static roadway environment topology and driver state multi-source information are fused, and high-precision and advanced prediction of the collision risk is achieved.

The utility model relates to the technical field of coal mine tunnel supporting, in particular to a turnover type sliding anchor drilling platform which comprises a lower layer fixing platform assembly and an upper layer sliding platform assembly. The upper-layer sliding platform assembly comprises a left anchor drill platform and a right anchor drill platform. The left anchor drilling platform and the right anchor drilling platform are each provided with two sets of top anchor devices and one set of side anchor devices. Small-angle adjustment of the upper-layer top anchor device in the front-back direction and the left-right direction is achieved, meanwhile, the upper-layer top anchor device can rotate forwards by 90 degrees to achieve large-angle adjustment, and the top anchor device is located in a top-free area at the upper end of the cutting part. The upper-layer side anchor device supports the side wall and can adapt to different row pitch construction, the anchor rod supporting construction range and angle are guaranteed, and multi-degree-of-freedom, multi-angle and wide-range flexible and efficient supporting operation suitable for low roadways and small empty top distance complex geological conditions is achieved.

The invention discloses a coal mine tunnel laser radar point cloud completion method based on TSE-SG, and belongs to the field of coal mine intelligence. The core process comprises the steps that S1, denoising point cloud is preprocessed, residual noise is filtered, global structure parameters are fitted, and block optimization is carried out; s2, based on TSE-SG, extracting fusion features, and accurately identifying mistakenly deleted structure holes; s3, extracting a cavity boundary point and a cross-plane intersection point as a high-confidence completion control vertex; s4, interactively applying coal mine exclusive constraints based on TSE-SG features to generate completion point clouds; s5, splicing the original point cloud and the complemented point cloud to form a full-roadway complete point cloud; the method is high in cavity repair rate, can retain details such as pipelines and seam lines, is free of non-physical structures, is high in processing speed, and solves the problems that after laser radar roadway point cloud denoising, cavities are easily formed due to the fact that structural points are mistakenly deleted, and an existing completion method is poor in adaptability, is lost in details, is liable to generate non-physical structures, and is insufficient in real-time performance.

The invention discloses a coal mine tunnel global consistent positioning method fusing laser inertial navigation and a UWB target, which comprises the following steps: S1, collecting multi-source sensor data, calculating the weight of the sensor data, and generating weighted sensor data; s2, based on weighted sensor data, performing data fusion through an error state filter to generate a pose estimation result; s3, establishing a pose map based on the pose estimation result, adding various constraint factors, executing nonlinear optimization, and generating an optimized pose result and an environment map; and S4, outputting coal mine tunnel positioning and map data based on the optimized pose result and the environment map. And the problem of performance degradation of a single sensor in an underground environment is effectively solved through a dynamic weight distribution mechanism.

The utility model discloses a fire-fighting device for a standardized mine tunnel for green mining of a coal mine, which comprises two groups of water collecting tanks, the water collecting tanks are connected with drain valves, a filter screen and a filter plate are sequentially connected in the water collecting tanks, the two groups of water collecting tanks are connected through a connecting pipe, the two groups of water collecting tanks are connected with a mine tunnel mounting frame, and the mine tunnel mounting frame is connected with a support. A temperature sensor, a smoke sensor and a gas sensor are connected to the support, a sprayer is connected to the inner side of the mine mounting frame, a ladder stand is connected into the mine mounting frame, a water tank and a control assembly are arranged on one side of the mine mounting frame, and the water tank is connected with the sprayer through a water supply pump and connected with a set of water collecting tanks through a water return pump. The device has the beneficial effects of high automation degree; the fire extinguishing coverage range is wide; water resources are reasonably utilized; and maintenance and operation are convenient.

The present application belongs to the technical field of ultrasonic detection, and discloses a mine roadway sealing layer integrity ultrasonic detection method; the method comprises the following steps: dividing a roadway area, and dividing a regional risk level of each roadway area; generating a sealing layer stress thermal diagram, performing stress partition, and generating a measuring point according to the regional risk level of the roadway area and the sealing layer stress partition; obtaining individual difference characteristics of the measuring point, and dividing the measuring point into different types according to the individual difference characteristics of the measuring point; executing a differentiated detection scheme according to the measuring point type; and adjusting the measuring point type and the regional risk level according to the detection result; the present application is characterized by multi-dimensional risk quantization division and individual differentiation focusing, which improves the detection accuracy, reliability and resource utilization efficiency.

The utility model discloses a mine tunnel supporting device for lead-zinc mining, and relates to the technical field of mining engineering. The lifting device comprises a bottom plate, a lifting assembly is arranged on the upper surface of the bottom plate, the lifting assembly comprises a supporting column vertically connected to the upper middle portion of the bottom plate, a hollow column is arranged on the peripheral side of the supporting column in a sleeved mode, limiting blocks distributed at equal intervals are arranged on the two inner side walls of the hollow column, and hinged supporting blocks are arranged on the upper edges of the two side walls of the supporting column. The end of a reset spring connected to the side wall of the supporting block in parallel is connected to the side wall of the supporting column, and the upper surface of the supporting block is erected on the lower surface of the limiting block. A supporting assembly is arranged on the upper surface of the hollow column. The lifting assembly is arranged to support the mine tunnels with different heights, the practicability is improved, the supporting assembly is arranged, the stability of the movable plate and the supporting plate is improved, the stability effect of supporting the lead-zinc mine tunnels is improved, the lead-zinc mine tunnels with different sizes are supported, and the practicability is improved.

The utility model discloses a coal mine tunnel water control drilling device which comprises a fixed frame, a movable frame, a drilling rod, a hydraulic cylinder, a hydraulic cylinder, a hydraulic cylinder, a hydraulic cylinder, a hydraulic cylinder, a hydraulic cylinder, a hydraulic cylinder and a hydraulic cylinder, and is characterized in that the fixed frame is provided with a movable frame, and the movable frame can slide along the fixed frame; a guide rod is arranged on the protective cover, the guide rod movably penetrates through the movable frame and can move along the fixed frame and the movable frame in the same direction, and the drill rod penetrates through the protective cover; the mounting seat is fixed in the protective cover, a through hole for the drill rod to penetrate through is formed in the mounting seat, and a cleaning structure is arranged in the mounting seat; during drilling operation, the protective cover makes contact with the bottom face of the drilling position, physical obstruction is formed around the drill rod, the problem of safety danger caused by splashing muck is avoided, the installation base is arranged in the protective cover, the drill rod is cleaned in time through the cleaning structure on the installation base, and the drilling efficiency is improved. The situation that environmental pollution is aggravated due to equipment movement can be avoided, and the drill rod can be maintained in time.

The present application belongs to the technical field of roadway dredging, and particularly relates to a kind of underground roadway drainage ditch dredging device.The dredging device comprises: a tracked vehicle, a tracked rail is laid on the bottom of the drainage ditch in the extension direction of the drainage ditch, and the tracked vehicle moves on the tracked rail; a sawtooth blade, the sawtooth blade is arranged at the front end of the tracked vehicle, and the sawtooth blade scoops up the sludge in the drainage ditch during the forward movement of the tracked vehicle; a storage mechanism, the storage mechanism is arranged at the rear end of the tracked vehicle, the sludge is accumulated in the storage mechanism during the forward movement of the tracked vehicle, and the sludge is unloaded in the sedimentation tank after being displaced to the position of the sedimentation tank.In the dredging device, the sludge is temporarily stored in the storage mechanism at the rear end of the tracked vehicle, and the sludge stored by the storage mechanism is unloaded into the sedimentation tank after the tracked vehicle moves to the position of the sedimentation tank.The dredging device greatly reduces the labor intensity of dredging work and improves the work efficiency.

The invention relates to the technical field of coal mine tunnel supporting, and discloses a mining U-shaped shed auxiliary erecting device which comprises a fixing frame, a bearing table is installed at the top of the fixing frame, a U-shaped beam body is arranged at the top of the bearing table, a guide rail is arranged on the surface of the fixing frame, and a two-way motor is fixedly connected to the center of the inner wall of the guide rail. The output end of the bidirectional motor is fixedly connected with a screw rod, sliding blocks are arranged in the guide rails close to the two sides of the bidirectional motor in a sliding mode, the sliding blocks are in threaded connection with the screw rod, hydraulic rods are hinged to the tops of the sliding blocks, and a connecting structure used for clamping the U-shaped beam body is arranged at one ends of the hydraulic rods. The condition that the longitudinal height of an existing mine laneway is limited is effectively avoided, the lifting device is arranged to push the two sides in the extending direction of the rock laneway through a relatively-stretched transverse laneway space, the U-shaped beam is lifted through relative movement of hydraulic rods on the two sides, and the beneficial effect of improving the overall lifting stability of the U-shaped beam is achieved.

In open-pit mines and underground mine tunnels, this system accurately tracks the position of mining vehicles such as heavy machinery and support vehicles, as well as their relative positions, enabling safe control of mining vehicles. [Solution] The system comprises a plurality of first devices 1 installed in or around a mine pit P or tunnel T, capable of acquiring their own position information, and a plurality of second devices 2 installed on multiple mining vehicles brought into the mining site. The system includes distance calculation means for calculating the distance between each of the plurality of first devices 1 and the second device 2 based on the bidirectional transmission and reception times of information or signals between each of the plurality of first devices 1 and the second device 2, and position identification means for identifying the position of the second device 2 based on the distance between each of the plurality of first devices 1 and the second device 2 calculated by the distance calculation means, and the position information of each of the first devices 1.

The invention discloses a mining guniting robot operation method, belongs to the field of coal mine tunnel guniting operation, and is used for solving the problems of low guniting efficiency, poor guniting quality, high labor intensity and the like in the existing coal mine tunnel guniting operation. The method comprises the steps that S1, the position of the guniting robot is automatically adjusted; s2, performing scanning composition on the roadway by using a laser radar; s3, full-section guniting operation is carried out; s4, partial face guniting operation is carried out; s5, the mining guniting robot automatically walks forwards; the method is simple in step, novel and reasonable in design, capable of achieving coal mine underground guniting operation, high in guniting operation efficiency, time-saving and labor-saving, good in safety, high in practicability and convenient to popularize and use, and a large number of workers are prevented from gathering underground to conduct roadway guniting operation.

The utility model relates to the field of orienting devices, in particular to a mining telescopic folding type water exploration and drainage drilling orienting device which comprises a supporting frame, a direction adjusting groove is formed in the side wall of the supporting frame in a penetrating mode, a direction adjusting block is rotatably installed in the direction adjusting groove, a telescopic groove is formed in the side wall of the direction adjusting block, and a telescopic shaft is installed in the telescopic groove in a sliding mode. A rotating groove is formed in one side of the telescopic shaft. According to the utility model, the fixed blades on the lower surface of the support frame are inserted into the ground, the mounting blades share transverse load and reduce vibration offset by utilizing the side wall of a mine tunnel, the fixed shaft is inserted into the ground to form double anchoring, the telescopic groove is formed in one side of the direction adjusting block, and the drill bit rotates to drill holes; the supporting block on the lower surface of the direction adjusting block supports the direction adjusting block, and the fixing bolt in the fixing screw hole is rotated into the ground to fix the supporting position, so that the direction of the direction adjusting block is fixed, meanwhile, the stability of the direction adjusting block is improved, and vibration deviation during drilling is avoided.

The utility model discloses a damping assembly of a mine underground drill rig, which relates to the technical field of underground drill rigs and comprises a drill rig body, a drill rig platform is fixedly connected to the bottom of the drill rig body, a damping assembly is arranged at the bottom of the drill rig platform, and the damping assembly comprises an L-shaped connecting frame. An L-shaped connecting frame is arranged in the damping assembly, the top of the L-shaped connecting frame is fixedly connected to the bottom of the drilling machine table, a threaded groove is formed in the top of the L-shaped connecting frame, and a bolt is connected to the inner wall of the threaded groove in a threaded mode. Through cooperation of the displacement frame rod, the telescopic rod and the spring, when the drilling machine is vibrated, the displacement frame rod slides up and down on the inner wall of the supporting seat, through the elastic effect of the spring and the telescopic rod, pressure caused by vibration can be effectively absorbed and relieved, instant impact borne by the drilling machine can be reduced, and the service life of equipment can be prolonged.

The invention discloses a mining air duct diverter driven by a pneumatic motor, and relates to a device for changing the air flow direction and controlling the air volume when a fan supplies air to a driving working face when a coal mine drives a roadway, and at present, two methods for changing the direction of an air outlet of an air duct are provided: one is manual operation which is inconvenient and unsafe; 2, an air duct gate is driven to open and close through a motor, and the method has unsafe risks such as electric leakage and explosion; therefore, the air distributor device which is driven by the pneumatic motor and is used for controlling the air flow direction and the air volume is manufactured, and the air distributor device is safe and convenient.

The utility model discloses a kind of anti-reflux adjusting devices for mine tunnel inside air window, comprising: with the parallelly arranged pivot of air door, pivot is located in the middle of air window, the both ends of pivot are fixedly connected with air door respectively;Symmetrically set in the both sides of pivot, the first baffle and second baffle that can cover air window, all are hinged with pivot;First baffle and second baffle side away from air window are all provided with fixed lug, fixed lug and first baffle or second baffle are all integrally connected;Adjusting silk, adjusting silk is thin iron wire, its one end is fixedly connected with the fixed lug of first baffle, other end can be bent as hook shape, is hung in the fixed lug of second baffle;Limiting rod, limiting rod is perpendicular with pivot, and there is included angle α between limiting rod and first baffle, one end of limiting rod is fixedly connected with first baffle, other end is suspended. The device can adjust air window ventilation opening size, and can also automatically close and block air window when sudden accident occurs in tunnel, avoid pollution expansion, improve safety.

The application relates to the technical field of data collection, and particularly discloses a mine-used new energy vehicle data automatic collection system, which comprises the following modules: a route planning module: the inner wall of a mine tunnel is divided into a plurality of sub-inner walls, the positions of sensors installed on a vehicle are obtained, the driving route of the vehicle is planned based on the positions, and the distance from the sensors to the same sub-inner wall remains unchanged when the vehicle drives along the driving route; a parameter acquisition module: constraint parameters are obtained; a signal acquisition module: constraint conditions are set based on the constraint parameters, the constraint conditions are used for setting collection parameters, sound signals in the driving process of the vehicle are collected based on the collection parameters, and target signals are obtained; and an abnormality judgment module: the features of the target signals are extracted, and whether the target components are abnormal is judged based on the features and a pre-trained state scoring model. The application improves the accuracy of component abnormality detection.

The invention discloses an earth covering removing device and method for a mine tunnel, and relates to the field of bulldozers, the earth covering removing device comprises a bulldozer, adjusting assemblies are rotationally connected to the two sides of the exterior of the bulldozer, a scraping shell is fixedly connected to one sides of the two adjusting assemblies, a loosening mechanism is arranged in the scraping shell, and the loosening mechanism comprises multiple sets of fixing plates; the multiple sets of fixing plates are fixedly connected to the bottom of an inner cavity of the scraping shell, and rotating rods are rotationally connected between the multiple sets of fixing plates. Through the design of the loosening mechanism, when a rotating soil digging plate makes contact with covering soil, the rotating covering soil can be crushed by the soil digging plate at the moment; therefore, the covering soil is subjected to crushing and loosening pretreatment work in advance in the process of shoveling the covering soil into the scraping shell, so that the scraping shell can be assisted in the work of removing the covering soil, the hardness of the covering soil is reduced, and the device has the characteristics of high practicability and capability of loosening the covering soil through vibration.

The application provides a supporting device for a coal mine tunnel, which comprises a roof, a first plug-in part arranged at the bottom end of the roof, vertical plates arranged at two ends of the roof respectively, second plug-in parts arranged at the top ends of the vertical plates, the second plug-in parts being in plug-in cooperation with the first plug-in part, and fixing rods penetrating through the second plug-in parts and the first plug-in part to connect the roof and the vertical plates. The roof and the vertical plates are connected in a plug-in mode, the fixing rods penetrating through the roof and the vertical plates can realize quick positioning of the installation of the roof and the vertical plates, ensure a stable connection relationship, effectively reduce the number of bolts, simplify the connection mode, and improve the supporting efficiency.

The invention relates to the technical field of coal mining equipment, in particular to a coal face hydraulic jumbolter which comprises a coal mining machine support installed at the top of a coal mining machine, a lifting mechanism comprises a telescopic arm, an upper pitching assembly and a lower pitching assembly, the upper pitching assembly and the lower pitching assembly are connected with the upper end and the lower end of the telescopic arm, and the upper pitching assembly is connected with a transverse telescopic mechanism. The transverse telescopic mechanism is connected with a mounting plate; the stabilizing mechanism comprises a front jacking assembly and a rear jacking assembly which are arranged on the two sides of the mounting plate correspondingly, the front jacking assembly comprises a propelling rail, a front jacking disc and a front power piece, and the rear jacking assembly comprises a rear power piece and a rear jacking foot connected with the driving end of the rear power piece. The propelling mechanism is connected with the propelling track and the hydraulic drilling machine and used for driving the hydraulic drilling machine to do lifting motion. The device is installed on the top of the coal mining machine, the position of the device can be changed along with movement of the coal mining machine, anchor hole drilling operation can be stably conducted on the top of a coal mine tunnel, the construction efficiency is improved, the labor intensity of constructors is reduced, and safety is high.

The invention relates to the technical field of coal mine tunnel desilting, in particular to an intelligent silt remover facing narrow and small space of a coal mine tunnel, which comprises a silt remover body and a mechanical arm matched with the top of the silt remover body, and a grab bucket is mounted at one end of the mechanical arm. Mounting plates are fixedly mounted at the front end and the rear end of the silt remover body through bolts, position dispatching mechanisms are arranged on the outer sides of the mounting plates, a material pushing plate is mounted at the front end of the silt remover body through the correspondingly-arranged position dispatching mechanisms, and a rotary sweeping assembly is mounted at the rear end of the silt remover body through the correspondingly-arranged position dispatching mechanisms. By means of cooperation of the material pushing plate, the rotary sweeping assembly, the position dispatching mechanism, the L-shaped protection plate and other core structures and a special operation method, the narrow space working condition is precisely adapted, the dredging efficiency and the channel smoothness guarantee capacity are remarkably improved, the function value of an existing structure can be excavated to the maximum extent, and the operation and operation comprehensive cost is reduced.

An oil tank device for a coal mine roadway hydraulic device and a use method, comprising a tank shell (1) for storing high-pressure power liquid, an oil return filter (3) arranged on the tank shell (1), an oil outlet filter (8) arranged on the tank shell (1), and a valve assembly arranged between the oil outlet filter (8) and the tank shell (1). Through the tank shell (1), the high-pressure power liquid is stored. Through the oil return filter (3), the installation window body is arranged on the upper end face of the tank shell (1). Through the oil outlet filter (8), the installation window body is arranged on the side face of the tank shell (1). Through the valve assembly, the high-pressure power liquid injected into the oil outlet filter (8) is controlled to be opened and closed. The cavity that can be empty of the high-pressure power liquid is left. The technical problem that the filter element is installed in the inner cavity of the oil tank and the filter element needs to be replaced after the high-pressure power liquid in the oil tank is discharged is solved, and therefore the replacement efficiency of the filter element is improved.

This utility model relates to the field of tunnel support technology, specifically disclosing a mine tunnel support device with water drainage function. It includes a bottom support frame, with a drainage pump fixedly connected to its upper side surface. A suction pipe is fixedly connected to the lower end of the drainage pump, and a drainage pipe is installed through the surface of the drainage pump. A support cylinder is fixedly connected to the upper surface of the bottom support frame, and a lower positioning frame is fixedly connected to the output end of the support cylinder. A limit sliding column is fixedly connected to the upper surface of the lower positioning frame, and an upper limit block is provided above the lower positioning frame. A limit slot is formed on the lower surface of the upper limit block. This mine tunnel support device with water drainage function effectively solves the problem of water accumulation in tunnels by integrating drainage and support functions. The drainage pump, in conjunction with the suction and drainage pipes, can quickly drain water from the bottom, preventing water accumulation from affecting passage and operational safety, and improving the adaptability of the tunnel environment.