189results about "Open-pit mining" patented technology

The invention relates to the technical field of blasting charging devices, in particular to a surface mine pre-splitting blasting parameter design method which comprises the following steps: acquiring P-wave velocity and differentially constructing a stiffness sequence, mapping a hole depth axis to identify a sudden change area, monitoring displacement and crack rate to extract triaxial deformation, identifying an unstable rock section and setting a charging section. According to the method, the P-wave speed is obtained, differential processing is carried out on the P-wave speed, the P-wave speed is converted into the rigidity gradient change rate, the rigidity gradient change rate is mapped to a hole depth axis recognition sudden change area, crack propagation and hole wall displacement are monitored, and an unstable rock stratum is positioned; and three-axis deformation is extracted to enhance prediction precision, a charging section is set, the dosage is calculated, the energy release efficiency is optimized, and blasting interference optimization is carried out by combining the time delay difference and the inter-hole included angle division distance.

The invention discloses an open pit mine stripping semi-continuous laying method based on a backfill type deeply-buried channel, and belongs to the technical field of transportation of open pit coal mine stripping systems. The method specifically comprises the steps that an optimal stripping semi-continuous belt conveyor system layout route starting from a stripping crushing station to an outer dumping site is planned; a space gully between the inner dumping site and the outer dumping site of the optimal route is filled with stripping materials to form a dumping bridge, a stripping semi-continuous belt conveyor is laid on the dumping bridge to the outer dumping site, and a backfill type deeply-buried channel is laid below the dumping bridge in advance. According to the transportation mode, the stripping and coal mining operation route is optimized, the truck transportation distance is shortened, and the comprehensive cost is reduced by 50%. Meanwhile, the dumping space is enlarged, and the tension of the dumping space is relieved. According to the arrangement mode, stripping and coal mining transportation routes are optimized, existing coal transportation and power transmission lines are reserved, and rerouting is avoided; tail gas emission is reduced, and environmental protection and energy conservation are achieved; hidden safety accidents in truck transportation are reduced, and manpower is released; and the strip mine is promoted to develop towards a safe, green, intelligent and efficient direction.

The invention discloses an open-pit coal mine thin coal seam mining technology, and relates to the field of open-pit coal mine mining, and the technology comprises the following components: resource depth exploration and coal seam high precision modeling, coal and rock layer precise blasting, coal and rock layer layering, loosening and stripping treatment, and thin coal seam stockpiling and screening according to a heat value and classification intelligent scheduling precise loading and transportation. According to the method, accurate modeling is conducted on the thin coal seam through three-dimensional modeling software, the model is updated in combination with real-time data feedback, accurate mastering of dynamic changes of the coal seam is achieved, meanwhile, through collaborative operation of accurate blasting of the coal seam and the rock stratum and layered loosening and stripping treatment, the mixing degree of the coal seam and the rock stratum is effectively reduced, and the quality of raw coal is remarkably improved; and subsequently, the thin coal seams are stockpiled and screened according to heat values, and precise loading and transportation are realized in combination with a classified intelligent scheduling system, so that the transportation efficiency and the resource utilization efficiency are greatly improved, the resource waste is fundamentally reduced, and an efficient and precise technical scheme is provided for open pit coal mine thin coal seam mining.

The invention relates to a milling device (20), in particular for a soil milling machine (10). The milling device comprises a rotatable milling drum (22) mounted in a milling drum housing (21) with a rotation axis (23) extending transversely to the working direction (a) of the milling device (20). Furthermore, the milling device (20) comprises a spray device (30) for spraying a substrate (U) to be milled with coolant.The spray device (30) comprises at least two spray bars (31) arranged in the milling drum (22), which can be connected to a coolant supply line (34) that is static relative to the milling drum (22) via a central rotary feedthrough (33) by means of separate lines (32), depending on the rotational position of the spray bars (31) relative to the coolant supply line (34), and can be disconnected from the coolant supply line (34) to interrupt the coolant supply, depending on the rotational position of the spray bars (31) relative to the coolant supply line (34).

The invention discloses a rock-fill dam-level burdening blasting mining method, system and device and a medium. The method comprises the following steps that firstly, blasting parameters are intelligently designed; step 2, dynamically controlling the drilling precision; 3, implementing a coupling charging structure; step 4, accurately detonating the electronic detonator; step 5, grading online detection after explosion; and 6, blasting vibration is monitored and fed back in real time. According to the method, a blasting parameter mathematical model is constructed, multiple parameters and constraint conditions are integrated, accurate parameters are output, and secondary machining of stone is reduced; a distributed optical fiber sensing network is arranged, and fine control over blasting vibration is achieved; an unmanned aerial vehicle is used for scanning a muck pile, a compensation scheme is automatically generated, the loading and transporting efficiency is improved, meanwhile, a multi-parameter coupling model is established, a dynamic adjustment scheme is monitored and fed back in real time, the management fragmentation problem is solved, and multiple measures are adopted to improve the accuracy and safety of blasting mining.

The invention discloses a dual-mode control switching method for unattended reconstruction of a rotary drilling rig, and particularly relates to the technical field of mechanical equipment mode switching, and the method specifically comprises the steps of S1, switching request triggering and instruction freezing, S2, full-state snapshot generation and synchronization, S3, three-level progressive arbitration decision, and S4, dual-factor verification and switching execution. And S5, network fluctuation fault tolerance. According to the invention, through overall planning of the vehicle-mounted controller, after a switching request is received, an instruction is frozen, full-state snapshots including sensor data, operation links, equipment health and environment data are synchronized, and switching is completed through three-level arbitration including safety state judgment, authority network verification and target end confirmation and then double-factor recheck. Safe seamless switching between a remote mode and a local mode can be achieved, the situations of instruction conflicts and information faults are avoided, the operation efficiency is improved, fault-tolerant processing is carried out on scenes such as network fluctuation and emergency takeover, and the reliability and safety of unattended operation are further improved.

The invention discloses an accurate control blasting construction method for a high and steep slope of a surface mine, and relates to the field of blasting operation. The accurate control blasting construction method for the high and steep slope of the surface mine is outstanding in safety benefit, and the long-term stability of the slope is greatly improved by forming the high-quality flat slope, so that the risks of landslide and rockfall are fundamentally reduced, and the safety of personnel and equipment below is guaranteed; the economic benefit is remarkable, overexcavation and underexcavation of the side slope are reduced, the stripping amount is close to a design value, the cost is saved, a steeper slope angle can be adopted for stabilizing the side slope, the total rock stripping amount is reduced, recoverable resources are increased, and the service life of a mine is prolonged; the technical benefit is obvious, the half-hole rate is improved, the surrounding rock damage and blasting vibration are reduced, and a better foundation is provided for slope supporting operation such as follow-up anchor rod and anchor cable installation; environmental and operation benefits are improved, environmental damage caused by slope instability is reduced, drainage system arrangement and daily safety inspection are better facilitated through slope leveling, and long-term maintenance cost is reduced.

The invention discloses a layout method of a coal mining continuous system based on a backfill type deeply-buried channel, and relates to the technical field of strip mine coal mining transportation systems. Firstly, raw coal transportation is conducted through an original rock section inclined roadway, and an inner dumping site is formed along with advancing of a working face; secondly, a backfill type deeply-buried channel is formed in the pit bottom, a belt conveyor is arranged in the backfill type deeply-buried channel to be communicated with a belt conveyor arranged in the inclined roadway, and raw coal under the pit is conveyed to a ground surface production system; the continuous mining and transportation process is combined with the backfill type deeply-buried channel, the coal mining transportation route is optimized, and the comprehensive cost is reduced; the backfill type deeply-buried channel is utilized, the inner drainage space is fully utilized, resource waste is reduced, and the utilization rate of the inner drainage space is increased; tail gas emission is reduced, and an efficient, low-consumption and environment-friendly transportation mode is achieved; manpower is released, and hidden safety accidents in truck transportation are reduced.

The utility model relates to a metal surface mine large dip angle belt conveyor transportation system which comprises a coarse crushing station system, a first transfer station, a second transfer station and a third transfer station. The first transfer station is connected with the second transfer station through a belt conveyor, and the second transfer station is connected with the third transfer station through a large-dip-angle belt conveyor; the inclination angle of the large-inclination-angle belt conveyor is larger than 15 degrees and smaller than 35 degrees. Compared with the prior art, the large-dip-angle belt conveyor has the advantages that by applying the large-dip-angle belt conveyor technology, the capital construction investment of a mine can be greatly reduced; the capital construction time is shortened, the metal surface mine deep mining transportation distance is shortened, and the mine transportation cost is saved; and meanwhile, the routing length is shortened through the routing arrangement of the large-dip-angle belt conveyor, side slopes under unfavorable geological conditions are effectively avoided, and the safety and reliability of the system are improved.

The invention discloses an intelligent bench blasting method and system for a rock-mud staggered surface mine, and relates to the technical field of blasting, the method comprises the following steps: acquiring point cloud data of a bench blasting area of the surface mine through three-dimensional laser scanning; constructing a three-dimensional geologic model reflecting the step form and the rock mud distribution characteristics; based on bench blasting characteristics, a comprehensive blasting prediction model is established; constructing a multi-objective optimization function including flying stone control, vibration control and lumpiness uniformity; processing the multi-objective optimization function through a multi-objective optimization algorithm to determine reference hole net parameters, single-hole explosive quantity and millisecond delay of bench blasting; and according to the local rock mud distribution, carrying out self-adaptive adjustment on the reference hole net parameters, the single-hole dosage and the differential delay. According to the method, through three-dimensional geological modeling, multi-target parameter optimization and blasting parameter self-adaptive adjustment, the blasting problem under the rock-mud staggered geological condition is solved.

The invention relates to the technical field of mining machines, in particular to a shoveling and transporting device and a mining machine. The shoveling and conveying device comprises a shoveling plate part, a belt conveyor and a belt tensioning mechanism, the shoveling plate part is movably installed on the frame, and the shoveling plate part is provided with a first position and a second position; when the shovel plate part is located at the first position, the bottom of the shovel plate part is contacted with the working surface; when the shovel plate part is located at the second position, the bottom of the shovel plate part is located above the working face and leaves the working face; the belt conveyor is installed on the frame, and the shovel plate part is installed at the first end of the belt conveyor. The belt tensioning mechanism is installed on the frame body and used for adjusting the corresponding tensioning degrees of the two sides of a belt located on the belt conveyor. According to the shoveling and conveying device, due to the fact that the belt tensioning mechanism capable of adjusting the corresponding tensioning degrees of the two sides of the belt is arranged, the shoveling and conveying device has the function of tensioning and deviation adjusting of the belt.

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.

The invention discloses a mine rock drill, which relates to the technical field of rock drills and solves the technical problem of direction adjusting.The mine rock drill comprises a hydraulically telescopic base with wheels, an electrically telescopic mounting frame is fixedly mounted at one end of the top surface of the base, and a rock drill head is arranged on the mounting frame; a control room is fixedly installed on the side, away from the installation frame, of the top face of the base, and a direction adjusting assembly for adjusting the direction of the rock drill head is arranged on the installation frame. The direction adjusting assembly comprises a mounting groove formed in the side, close to the base, of the mounting frame, a two-way screw is rotationally mounted in the mounting groove, sliding blocks are mounted at the positions, close to the two ends, of the two-way screw in a threaded penetrating mode, and rotating plates are rotationally mounted on the sides, away from the two-way screw, of the sliding blocks. A top plate is rotationally mounted between the two rotating plates; the digging direction of the rock drill head can be conveniently adjusted according to the digging requirement, the direction adjusting capacity of the device can be improved, and the working efficiency of the device for digging rocks can be improved.

This is a construction method of spaced explosive loading blasting in open-cut mines. [Solution] In this blasting method, in areas with low hardness coefficient rock, a combination of bottom-interval and middle-interval explosive loading is used. This increases the height of the lower charge column while simultaneously reducing the total amount of explosive charged in the hole, significantly reducing blasting costs while maintaining better blasting results. In areas with high hardness coefficient rock, a middle-interval explosive loading method is used, increasing the amount of explosive charged at the top of the blasthole axis, effectively reducing the occurrence of large blocks at the hole mouth and reducing the amount of secondary mechanical crushing work after blasting. The mutual cooperation between the various components of the middle-interval mechanism enhances the reflection and overlap of explosive shock waves, strengthening the stress field and extending the stress action time, thereby achieving a larger blasting impact. This ultimately improves blasting energy utilization, achieves more uniform rock crushing, and reduces the rate of large blocks after blasting.

The utility model relates to the technical field of mine mechanical equipment, and provides a novel mine sawing machine which comprises a machine body, a saw blade and a control system which are arranged on the machine body and further comprises at least one group of protection alarm units, and each group of protection alarm units comprises a first fixing column, a second fixing column, a protection wire, a sensor and an alarm. The first fixing column and the second fixing column are arranged on the same side, where the saw blade is installed, of the machine body and located on the left portion and the right portion of the machine body respectively, the two ends of the protection line are arranged on the first fixing column and the second fixing column respectively, and at least one end of the protection line is detachably connected with the first fixing column or the second fixing column. The middle of the protection line stretches across the outer side of the saw blade, the sensor is arranged at one end of the protection line to detect whether the protection line shakes or not in real time and send detection information to the control system of the machine body, and the alarm is connected with the output end of the control system to give an alarm about shaking of the protection line. The mine sawing machine solves the problem that a saw blade is inconvenient to maintain and replace due to the fact that an existing mine sawing machine is provided with a protective cover.

The present application belongs to the technical field of mining equipment. In order to solve the problem that the existing side slope mining equipment is generally fixed or semi-fixed, which cannot meet the unloading requirements under different working conditions, a kind of open pit side slope mining multi-degree of freedom unloading device is provided. The device includes a support seat, a horizontal unloading part, a first drive assembly, a high beam, an inclined unloading part, a connecting frame and a second drive assembly. The first drive assembly drives the horizontal unloading part to rotate, and the second drive assembly drives the connecting frame to move, thereby driving the inclined unloading part to rotate around the vertical line of the high beam. The device has a simple structure. By changing the unloading position and unloading height through the first drive assembly and the second drive assembly respectively, the overall unloading part can realize multi-degree of freedom movement relying on the mechanical structure, and the adaptability of the device to different working conditions is improved.

This utility model discloses a pressure-adjustable sand dredging pipe, including a pipeline structure, a sand suction head connected to one end of the pipeline structure, and a pressure pump connected to the other end of the pipeline structure. The pipeline structure includes two rigid fixed pipe sections, a wear-resistant extraction pipe section, and a three-way ball valve connecting the rigid fixed pipe section and the extraction pipe section. The two outlets of the three-way ball valve are respectively connected to the two rigid fixed pipe sections, and the inlet of the three-way ball valve is connected to the extraction pipe section. Both the extraction pipe section and the rigid fixed pipe section are equipped with connecting flanges. This utility model achieves good pressure control by installing a three-way ball valve on the sand dredging pipeline.

The invention discloses a single-line lifting and conveying system and method for a strip mine large-dip-angle rail mine car, belongs to the field of ore transportation, and aims to transport ores quickly, efficiently and safely. Comprising winding drum devices, steel wire ropes, track beams and mine cars. A winding drum device is adopted to rotate a winding steel wire rope to pull a mine car to run along a rail erected from a mine pit to a mine top to achieve ore transportation, rapid, safe and low-cost lifting and conveying of ore are achieved, and the problems that a strip mine deep pit mine is long in transportation mileage, high in climbing, low in transportation efficiency and poor in economical efficiency are solved. In order to solve the problems that in the prior art, the ore transportation speed is high, the transportation distance is effectively shortened, the ore transportation cost and carbon emission are greatly reduced, and safe, environment-friendly, high-quality and intelligent development of mines can be achieved through the method of'taking the elevator by the ores', so that the problems of exponential growth of spare parts, fuel oil, tires and other consumables, great increase of the cost, serious environmental pollution and the like are solved. The method has the advantages that the ore transportation speed is high, safe and efficient, the transportation distance is effectively shortened, and the ore transportation cost and carbon emission are greatly reduced.

The invention belongs to the technical field of mining equipment, and particularly relates to a blasting drilling device for mining. The chip removal type drill bit mechanism is mounted outside the mechanical arm and is used for removing chips in the drilled hole; the auxiliary cleaning mechanism is mounted outside the chip cleaning type drill bit mechanism and is used for cleaning chips between the chip cleaning type drill bit mechanism and the inner wall of the hole; and the driving mechanism is installed outside the mechanical arm and used for adjusting the pressure intensity of the scrap cleaning type drill bit mechanism and the auxiliary cleaning mechanism. Through the collaborative design of the chip removal type drill bit mechanism, the mechanical arm and the vehicle carrier, the chip removal process can be directly started after drilling is completed, a piston is driven by a hydraulic cylinder to reciprocate in a sealing sleeve, and chips at the bottom of a hole can be efficiently sucked in cooperation with an inclined pressure channel formed by a conical barrel and a notch; the four drill bits achieve opening and closing actions, chips clamped in gaps of the drill bits are synchronously cleaned, and the problems that in mining, the chip cleaning cost is high, and the efficiency is low are effectively solved.

The application discloses a portable energy-saving mining and drilling equipment, relates to the technical field of energy-saving mining machinery and equipment, and is a drilling machine with portable components and land transportation features, which comprises a main frame and moving wheels, the moving wheels are rotatably installed at the bottom of the main frame, the portable device comprises a threaded adjusting rod, an adjusting work piece, an adjusting block, an adjusting sleeve rod and a micro motor, the threaded adjusting rod is rotatably installed on the surface of the main frame, the adjusting work piece is slidably installed on the surface of the main frame, and the adjusting block is fixedly installed on the surface of the adjusting work piece; the adjusting block is moved to drive the adjusting work piece to move, the adjusting work piece is moved to drive the adjusting sleeve rod to move, the adjusting sleeve rod is moved to move towards the middle to realize the portable storage effect of the equipment, the use flexibility of the equipment is improved, and the pain points of the traditional mining and drilling equipment, such as large size, difficult transfer and complicated storage, are solved.

A milling machine can include a frame, a milling assembly including a cutting rotor and a rotor housing coupled to the frame, the cutting rotor including a rotor shell positioned around a spindle, and a first axial alignment feature on one of the rotor shell or the spindle, the first axial alignment feature including a physical feature on a surface of the rotor shell or the spindle, the physical feature being positioned and configured to contact an opposing flat surface of the opposing rotor shell or spindle so as to guide the rotor shell and the spindle into a co-axial alignment as the rotor shell is loaded axially onto the spindle.

A long arm type compact wheel bucket excavator relates to mechanical equipment for open pit mining, comprising a supporting mechanism, a bucket wheel driving mechanism, a discharging arm rotating mechanism, a crawler walking mechanism and a tensioning mechanism, the discharging arm rotating mechanism comprising a main machine walking mechanism, a supporting base assembly, a rotating platform assembly and an adjusting plate assembly; the supporting base assembly comprising a central pipe vertically fixed on the main machine walking mechanism and a mounting seat fixed on the central pipe; the rotating platform assembly comprising a rotating platform rotatably supported on an L-shaped beam; the adjusting plate assembly comprising an adjusting plate body, a lower connecting shaft slide way symmetrically arranged on both sides of the adjusting plate body and an upper connecting shaft slide groove symmetrically arranged on the other two sides of the adjusting plate body, the guide directions of the lower connecting shaft slide way and the upper connecting shaft slide groove being perpendicular to each other. The wheel bucket excavator does not need to additionally set a reclaimer and will not generate triangular coal, and has the advantages of good stress characteristics, good safety and the like.

The invention relates to a segmented cooling device and method for a sulphide ore blast hole wall, and belongs to the technical field of high-temperature blasting. The cooling device comprises a mounting box and a water storage tank, a rope and a water conveying pipe are arranged at the top of the mounting box, a rotary water supply connector is arranged between the water storage tank and the mounting box, and the water storage tank is rotationally mounted at the bottom of the mounting box; a power assembly used for driving the water storage tank to rotate is arranged on the mounting box, the mounting box can supply water to the water storage tank through a rotary water supply connector and a water conveying pipe, a rotary limiting mechanism is arranged on the mounting box, and a spraying mechanism is arranged on the water storage tank; the system further comprises a monitoring assembly, the monitoring assembly comprises a temperature sensor, a controller and a displayer, the temperature sensor and the controller are both arranged on the water storage tank or the installation box, the displayer is located outside the blast hole, the temperature sensor is in signal connection with the controller, and a communication module is arranged on the controller and is in communication connection with the displayer. The method has the effects of saving water consumption, being high in water resource utilization rate and improving the segmented cooling efficiency of the blast hole.

The invention relates to a strip mine end slope transportation bypass bridge which comprises supporting bridge columns and cross beams, the multiple supporting bridge columns are sequentially arranged at intervals, and a first passing space is formed between every two adjacent supporting bridge columns in the length direction of the strip mine end slope transportation bypass bridge. The cross beam stretches across the supporting bridge columns in the width direction and / or the length direction of the strip mine end slope transportation bridging and is connected with the tops of the supporting bridge columns, a pavement structure is arranged on the top of the cross beam, a second passing space is formed above the pavement structure, and the first passing space and the second passing space are arranged in an included angle mode. The strip mine end slope transportation bypass bridge is mainly assembled and built by metal materials, can adapt to various road-crossing topographic conditions in the longitudinal direction, can adapt to traffic requirements in the transverse direction, is high in topographic adaptability, does not need to specially design various structures according to the topography, and is good in steel structure integrity stability, safe and reliable in structure and easy to machine and transport.

The utility model discloses a rock mine saw for excavating a foundation pit of a subway station in a hard rock stratum. A disk saw relates to the technical field of mining equipment and comprises a disk saw and a holding assembly, a water supply system is arranged on a base of the disk saw, the holding assembly comprises a shell, a water cutter head is arranged on the shell, and the water cutter head is communicated with the water supply system through a water conveying pipe; the water jet cutter head is also communicated with a sand storage box; the water jet cutter device, the rock drilling drill and the circular saw for the miner are combined, the hard rock stratum can be cut through one device, a large amount of time for manually digging the horizontal rock stratum is saved, the labor cost of construction is reduced, and the construction period is shortened.

The present application relates to a kind of for deep recess open-pit new level development water pressure environment reconstruction efficient ditching method, the lithology and fracture distribution characteristics of rock mass in the in-and-out ditch ditching area are proved, and according to this, each construction section of in-and-out ditch channel is subdivided into water gushing area, conventional area and first blast area.In first blast area and water gushing area and outside, uniformly arrange precipitation well, outside, arrange drainage well, after the surface fissure water is drained in advance, from first blast section, it is formed to gather water loose blast pile by rapid penetration and blasting to both sides.In the pre-splitting blast hole drilled between drainage well and the first blast area and water gushing area of channel, bottom is strengthened charge and is simultaneously detonated with adjacent channel construction section, and through drainage passage is formed in the bottom of blast pile between drainage well and in-and-out ditch.In the completion of penetration and blasting, water pump in drainage well is full load continuous pumping, so that the water level of blast pile is lower than the operating surface of electric shovel, and electric shovel is combined with car flat car full section high continuous ditching to new level operating surface.The present application has the advantages of improving penetration and blasting effect, improving ditching efficiency, flexible selection of development opportunity etc..

The utility model discloses an adjusting surface mine production stripping device, and relates to the technical field of surface mine production stripping devices, the adjusting surface mine production stripping device comprises a stepping track, the top surface of the stepping track is fixedly provided with a damping assembly, the damping assembly comprises a U-shaped seat, a buffer plate and sliding blocks, the two sides of the interior of the U-shaped seat are provided with sliding grooves, the sliding grooves are internally provided with two sliding blocks, and the two sliding blocks are arranged in the sliding grooves. And telescopic rods are fixedly installed on one sides of the sliding blocks, the telescopic ends of the two telescopic rods on the upper portion are fixedly connected through a buffer plate, and a fixing plate is fixedly installed at the telescopic ends of the two telescopic rods on the lower portion. Through cooperation of the damping assembly and the auxiliary assembly, good damping can be conducted when the mine production stripping device works, bumping possibly occurring in various directions of the mine production stripping device can be buffered when the mine production stripping device moves, and the mine production stripping device has the advantages of being good in damping effect, convenient to move and the like; the crushing degree of the ore body is higher through the crushing assembly, and the crushing fineness of the ore body can be improved through the mounted crushing gear.

On the basis of a specification and a wear state of each tire mounted on a vehicle, a recommended internal pressure for the tire is calculated with respect to each tire mounting position of the vehicle and a proposal for adjusting the internal pressure of each tire mounted on the vehicle to the recommended internal pressure is output.

This utility model discloses a protective device for unloading ore in an open-pit mine, comprising: a ore pass, an inclined slope on one side of the ore pass, and an unloading platform on one side of the inclined slope. The bottom of the unloading platform is fixedly connected to the ground. A protective mechanism is provided on the unloading platform, including: an unloading channel, side blocks on both sides of the unloading channel, an unloading baffle at the inclined slope end of each side block near the ore pass, and a vertically upward column at the inclined slope end of each side block. Anti-tipping beams are provided between the columns, and diagonal bracing is provided between each column and the corresponding side block. This utility model features an unloading channel, an unloading baffle at the bottom, and an anti-tipping beam at the top, effectively preventing ore cars from tipping into the ore pass, greatly improving unloading safety. Furthermore, it can detect the movement of the ore car using sensors and provide real-time feedback of the unloading status to a display screen via a camera, significantly improving the efficiency of unloading operations.

The invention relates to a transportation method based on bridges and culverts, and relates to the technical field of open-cast mining. The transportation method based on the bridge and culvert comprises the steps that the bridge and culvert is arranged on one side of a first preset position, the bridge and culvert comprises a bridge body and at least one culvert penetrating through the bridge body, and the culvert communicates with the first preset position and a second preset position; each culvert comprises a first lane and a second lane which are opposite in driving direction; the first vehicle group transports materials through the bridge and culvert road; and the second vehicle travels from the second preset position to the first preset position through a first lane in the culvert, and travels from the first preset position to the second preset position through a second lane in the culvert. The bridge and culvert road and the culvert are arranged to form the vertical crossing transportation line, coal is transported to the crushing station through the end slope road and the culvert, the vertical crossing transportation line is formed, the conflict problem of horizontal intersection of the first vehicle group and the second vehicle on the end slope road is solved, potential safety hazards caused by vehicle crossing are avoided, and the safety of the crushing station is improved. And the vehicle transportation operation efficiency is improved.