717results about "Cutting machines" patented technology

In one aspect of the present invention, a drill string has a drill bit with a body intermediate a shank and a working face. The working face has a plurality of blades converging at a center of the working surface and diverging towards a gauge of the working face. At least one blade has a cutting element with a carbide substrate bonded to a diamond working end with a pointed geometry. The diamond working end also has a central axis which intersects an apex of the pointed geometry. The axis is oriented between a 25 and 85 degree positive rake angle.

The vertical feeding coal mining machine comprises a rack, a traction part and a cutting assembly, the traction part is connected with the rack so as to be used for dragging the rack to move, the cutting assembly comprises a roller body and cutting teeth, the roller body comprises a cylinder body, an end disc and an end cover, the end disc is arranged on the cylinder body, and the cutting teeth are arranged on the end disc. The end disc is arranged on the outer circumferential wall of the roller body in a sleeving mode, the end disc and the first end of the roller body are arranged in a flush mode, the end cover is connected with the inner circumferential wall of the roller body, a groove is defined between the end cover and the roller body, the multiple cutting teeth are arranged in the circumferential direction of the center line of the roller body at intervals, and the cutting teeth are arranged in the groove. One part of the plurality of cutting teeth is connected with the end disc, and the other part of the plurality of cutting teeth is connected with the end cover. According to the vertical feeding coal mining machine, the arrangement positions of the cutting picks are optimized, the possibility of abrasion of the cutting picks is reduced, and the cutting efficiency is improved.

An integral frame-type machine body structure of a coal mining machine, and an integral frame-type intelligent coal mining machine. A structure in which an integral frame-type framework is welded to articulated frames is adopted, and the frame-type framework is configured to be of a transverse drawer-type structure, thereby achieving high interchangeability. The articulated frames are symmetrically distributed on a left side and a right side of the frame-type framework and are welded and connected to the frame-type framework; and a top plate (16) and a bottom plate (14) are fixedly arranged at an upper part and a lower part of the frame-type framework, respectively, external traction transverse plates (9) are fixedly arranged on the left side and the right side of the frame-type framework, and several intermediate vertical plates are fixedly arranged between the top plate (16) and the bottom plate (14), which are located an upper side and a lower side of the frame-type framework, to divide same, so as to obtain a plurality of cavities. The modularization rate of the coal mining machine is improved, thereby improving the interchangeability, facilitating underground maintenance and overhaul, and enhancing the matching adaptability; in addition, the force-bearing condition of the coal mining machine during the working process is improved, and the reliability of a transmission system of the coal mining machine is enhanced.

The invention discloses a multi-cutting-device collaborative coal cutting non-beveling feed system which comprises a machine nest cutting device and a scraper conveyor, the machine nest cutting device comprises a traction part, a rotating arm and a cutting roller, the cutting roller is arranged at the first end of the rotating arm, and the scraper conveyor is arranged at the second end of the rotating arm. The second end of the rotating arm is pivotally connected with the traction part, the rotating arm is used for driving the cutting roller to move relative to the coal seam, the extending direction of the scraper conveyor is perpendicular to the advancing direction of the working face, the two ends of the scraper conveyor are each provided with a machine nest cutting device, and the traction part of each machine nest cutting device moves along the scraper conveyor; the drum shearer is arranged in the middle of the scraper conveyor and used for cutting a coal seam, and the hydraulic support is arranged on the side, away from the working face, of the scraper conveyor and used for supporting a top plate. The multi-cutting-device collaborative coal cutting non-beveling feed system provided by the invention has the advantages of high cutting efficiency and small influence on the original process.

The invention discloses a low seam few-person fully mechanized coal mining face mining system and method, the system comprises a coal mining machine automatic control system and a hydraulic support electrohydraulic control system, the coal mining machine automatic control system realizes position information transmission and height adjustment of a coal mining machine; the hydraulic support electro-hydraulic control system achieves hydraulic support pulling, pushing and sliding, machine following and support moving and automatic control over actions of the hydraulic support, and the remote control system conducts three-machine linkage control over key production equipment of the fully mechanized coal mining face, automatic control, locking, sudden stop, fault diagnosis, automatic liquid supplementing and data information transmission on the hydraulic support. Coal face equipment has the functions of coal wall video monitoring and the like, and the production process is automatically completed; the coal mining process is intelligent, data transmission is informationized, and on-site operators operate and produce with few persons, so that manual intervention is reduced as much as possible, and high-yield, efficient and safe production is ensured.

The invention relates to the technical field of coal mine intellectualization, and provides an inter-face coal pillar digging and mining robot which comprises a right-angle turning scraper conveyor and a digging and mining robot body. The digging and mining robot is mounted on the right-angle turning scraper conveyor; the digging and mining robot comprises a cutting system, and the cutting system is located on a machine body of the digging and mining robot. Wherein the cutting system is driven by the electric cylinder to move, and vertical cutting of a rectangular section is completed through compound movement of the feeding electric cylinder and the height adjusting electric cylinder; after the cutting action is completed, a walking system of the digging and mining robot moves by one cut width along the right-angle turning scraper conveyor, and the actions are repeated until the whole section is pushed by one cut distance; wherein in the cutting process, the fallen coal is transferred into the right-angle turning scraper conveyor; the stability of the cutting system in the cutting and walking process is ensured through the anti-overturning effect of the guide sliding shoes in the walking system of the digging and mining robot and the force effect of the hydraulic support matched with the right-angle turning scraper conveyor.

The invention relates to the technical field of thin seam mining equipment, in particular to a thin seam mining machine which comprises a driving assembly, a transmission assembly, a machine body, a first cutting assembly and a second cutting assembly, and the first cutting assembly and the second cutting assembly are arranged on the two sides of the machine body in the extending direction. The driving assembly and the transmission assembly are arranged in the machine body, the driving assembly is arranged between the first cutting assembly and the second cutting assembly, the input end of the transmission assembly is connected with the output end of the driving assembly, and the first output end of the transmission assembly is connected with the input end of the first cutting assembly; and the second output end of the transmission assembly is connected with the input end of the second cutting assembly. According to the thin seam coal mining machine, the single motor is arranged to drive the rollers on the two sides, the size of the coal mining machine is reduced, and the coal mining flexibility is improved.

A mixed feed efficient mining method includes the steps that firstly, an air way, a machine way and a cutting hole are formed, a coal pillar is reserved at the left end of a working face, the length of the reserved coal pillar is larger than that of a single-drum coal mining machine, a machine nest is formed in the right side of the reserved coal pillar, and the length of the machine nest is not smaller than the sum of the length of a double-drum coal mining machine and the length of beveling feed; the single-drum coal mining machines are arranged in the roadways at the two ends of the fully mechanized coal mining face, the double-drum coal mining machines are arranged on the scraper conveyor at the machine nest section, when the double-drum coal mining machines run to be close to the left end or the right end of the fully mechanized coal mining face, reverse beveling feeding is directly carried out for next coal cutting, and it is not needed that coal is cut back and forth after conventional beveling feeding is carried out; coal pillars left at the two ends of the working face are cut by the two-end single-drum coal mining machine through vertical feeding, coal mining at the two ends and the middle section of the working face is achieved at the same time, the mining efficiency is greatly improved, the number of arranged working faces is reduced, the labor time of workers is shortened, and the economic benefits of enterprises are increased.

A three-coal-mining-machine efficient mining method includes the steps that firstly, an air way, a machine way and a cut hole are formed, notches are formed in the two ends of the cut hole in advance, and the length of the notches is not smaller than the sum of the length of a single-drum coal mining machine and the length of a double-drum coal mining machine; the front portions of the two ends of the working face are beveled, fed and pre-cut to form machine nests through the two single-drum coal mining machines, a roof is supported through the lagging supporting support and the timely supporting support, and the requirement for the width of a roadway can be lowered by adopting the beveled feeding mode of the single-drum coal mining machines; in addition, the single-drum coal mining machines on the two sides perform pre-cutting operation at the two ends of the working face and the double-drum coal mining machine perform coal cutting operation in the middle of the working face synchronously, and after the double-drum coal mining machine enters a left-end or right-end machine nest, the double-drum coal mining machine directly performs reverse beveling feeding for next coal cutting, so that the mining efficiency of the working face is improved; the working face arrangement number is reduced, the labor time of workers is shortened, and the economic benefits of enterprises are increased.

The invention discloses a coal cutter roller control device and method integrating elastic wave and infrared temperature measurement, and relates to the technical field of safe mining of deep mine coal, and the coal cutter roller control device integrating elastic wave and infrared temperature measurement mainly comprises an elastic wave detection module and an infrared monitoring module. The elastic wave detection module is used for detecting a coal seam thickness value and a coal-rock interface layer position and controlling a roller of the coal mining machine to rise and fall; the infrared monitoring module is used for collecting temperature data and obtaining and storing a temperature threshold value. The coal mining machine roller control device integrating elastic wave and infrared temperature measurement and the control method can adapt to complex construction environments and severe geological conditions, and the safety and efficiency of deep mine coal mining are improved.

The utility model provides a heading machine. The heading machine comprises a machine body; the first rotating part is arranged at the front end of the machine body; the cutting assembly is connected with the first rotating part and can swing up and down under the action of the first rotating part; the first detection assembly is connected with the first rotating part and is used for detecting the lifting amplitude of the cutting assembly; the control assembly is connected with the first detection assembly and used for determining the final lifting amplitude of the cutting assembly according to the detection result of the first detection assembly; wherein the first detection assembly comprises a first gear which is connected with the first rotating part and can synchronously rotate along with the first rotating part; the second gear is meshed with the first gear; the first angle sensor is connected with the second gear and used for converting the rotation angle of the second gear into an electric signal and sending the electric signal to the control assembly. The heading machine can stably measure the lifting amplitude of the cutting assembly of the heading machine with high precision.

A non-beveling feed mining method specifically comprises the following steps that (1) auxiliary working faces are arranged at the two ends of a main working face in advance, and single-drum coal mining machines, auxiliary scraper conveyors and hydraulic supports are arranged on the auxiliary working faces; (2) pre-opening pits of the secondary working surfaces at the two ends and normal pushing and mining of the main working surface are performed simultaneously; wherein the single-drum coal mining machine starts a pit on the auxiliary working face, and a hydraulic support of the auxiliary working face follows a pulling frame and is pushed to slide; the double-drum coal mining machine cuts coal on the main working face, the hydraulic support of the main working face follows the pulling frame and is pushed to slide, and when the double-drum coal mining machine runs to enter the machine nests in the two ends, the double-drum coal mining machine returns a cutter and directly and vertically feeds the cutter to cut the coal wall to achieve pushing mining of the main working face. The method does not need conventional beveling feeding and then back-and-forth coal cutting, realizes simultaneous operation of pre-opening machine nests at the two ends of the fully mechanized coal mining face and normal pushing mining of the middle section, greatly improves mining efficiency, is beneficial to reducing the arrangement number of the working faces, reduces the labor time of workers, and increases the economic benefits of enterprises.

The coal mining machine roller comprises a roller body and a cutting tooth assembly, the roller body comprises a cylinder body, an end disc and an end cover, the end disc is arranged on the peripheral wall of the cylinder body in a sleeving mode, the end disc is flush with the first end of the cylinder body, the end cover is connected with the inner peripheral wall of the cylinder body, the cutting tooth assembly is arranged on the inner peripheral wall of the cylinder body, and the cutting tooth assembly is arranged on the inner peripheral wall of the cylinder body. A groove is defined between the end cover and the roller body, the cutting tooth assembly comprises a plurality of cutting teeth, the plurality of cutting teeth are arranged at intervals in the circumferential direction of the center line of the roller body, one part of the plurality of cutting teeth is connected with the end disc, and the other part of the plurality of cutting teeth is connected with the end cover. According to the roller of the coal mining machine, the arrangement positions of the cutting picks are optimized, the possibility of abrasion of the cutting picks is reduced, and the cutting efficiency is improved.

The invention discloses an impacting-splitting-cutting composite rock breaking configuration of a cantilever type heading machine, relates to the field of coal mine underground heading equipment, and solves the problems of low efficiency, serious cutting pick abrasion, poor stability and insufficient adaptability of an existing heading machine during hard rock operation. A multi-stage cylinder executing mechanism is arranged on a cutting arm of the heading machine, an angle adjusting rotary table is arranged at the upper end of the multi-stage cylinder executing mechanism, and a breaking hammer and a rock cracking machine are arranged on the angle adjusting rotary table; the angle adjusting rotary table comprises a track plate and a rotary table, and the rotary table drives the track plate to rotate; a breaking hammer is arranged at one end of the track plate, and a rock cracking machine is arranged at the other end. The breaking hammer and the rock cracking machine are integrated at the front end of the heading machine, pre-broken rock can be split, the number of times of breaking is reduced, vibration and noise caused by repeated breaking are avoided, the internal stress of a rock stratum is damaged by additionally arranging the rock cracking machine, other work of the whole machine is not affected, and the service life of the heading machine is not affected.

The present application provides a kind of slotted equipment for coal seam gas control, belong to coal seam gas control technical field, including two slotted mainframes of synchronous coordination work, two slotted mainframes are arranged in the roadway of coal seam two sides respectively, and two slotted mainframes are driven connection through annular cutting cable between two slotted mainframes;Slotted mainframe includes self-propelled platform, power module, speed reducer, gear reversing device and main drive line wheel are set in self-propelled platform upper portion, power module passes through speed reducer and transmits power to gear reversing device;The present application uses annular cutting cable of cyclic motion as cutting force, and combines the feeding force provided by two slotted mainframes of synchronous coordination work, can cut out one or two slotted in coal seam transversely, instead of traditional high-density drilling, not only greatly reduces labor intensity, saves cost, and the permeability area formed by slotted is larger, more conducive to the desorption of gas, to greatly improve gas extraction efficiency.

The invention relates to a hydraulic slotting and fracturing integrated collaborative operation system, and belongs to the technical field of coal mining. The system comprises a multi-parameter three-dimensional monitoring module, a multi-mode cooperative control module, a hydraulic fracturing module and a hydraulic slotting module. The multi-parameter three-dimensional monitoring module is used for carrying out crack three-dimensional modeling, stress field dynamic tracking and gas component real-time analysis; the multi-mode cooperative control module analyzes the geological exploration data output by the multi-parameter three-dimensional monitoring module to obtain geological parameters, and generates an operation scheme according to the geological parameters; and the hydraulic fracturing module and the hydraulic slotting module cooperatively work under the control of the multi-mode cooperative control module. Through the integrated collaborative design of hydraulic slotting and fracturing, the limitation of a single process is broken through, the construction efficiency and uniformity of a crack network are improved, the stability and coverage range of a gas extraction channel are improved, and a full-process intelligent solution is provided for safe and efficient mining of a complex coal seam.

A tensile-fracturing hard-rock-breaking boring machine and a construction method. The boring machine comprises: a cutting motor (a1) and a speed reducer (a3); a cutting telescopic oil cylinder (a2), which extends out so as to realize cutting feed and is fixed to the cutting motor (a1), an output end thereof being hinged to a telescopic outer cylinder (b24) of a telescopic part (a4); a telescopic part (a4), which is located between cutting heads and the cutting telescopic oil cylinder (a2), and comprises a driving spiral bevel gear (b20) used for transmission of power from the speed reducer and fixed to the tail end of a transmission shaft (b21); and a middle fixing box (a8), which comprises a middle fixing box body (b16), a speed reduction shaft (b19), a small speed reduction gear (b17), a large spiral bevel gear (b18), a cutting shaft (b8), a large speed reduction gear (b7), a left fixed spiral bevel gear (b13), a left bearing pedestal (b14), a right fixed spiral bevel gear (b5) and a right bearing pedestal (b6). The cutting heads perform accelerated self-rotation while revolving downward towards a front wall along with cutting box bodies. The self-rotation and revolution of a left cutting head and a right cutting head are coordinated to enable smooth cutting, and the total width of the left cutting head and the right cutting head is reduced without affecting normal full-face tunneling.

Disclosed are a shearer having an adaptive variable cutting line distance and a cutting method for the shearer. The shearer comprises a box (1), a traveling mechanism (2), a pitch mechanism (3), a longitudinal moving mechanism (5), a cantilever, and cutting mechanisms (7). By means of the traction of a longitudinal moving mechanism, a cantilever of the shearer drives a drum cutting head to perform a longitudinal reciprocating cutting motion, thereby improving the cutting range and efficiency; moreover, by regulating the longitudinal movement speed of the cutting head, the cutting line distance of the shearer can be significantly decreased, the problem of insufficient cutting capacity caused by a small cutting thickness during coal rock cutting is solved, and the risk of failure and damage of mechanisms is reduced; by means of the arrangement of sensors, coal rock can be classified into normal-hardness coal rock, high-hardness coal rock, and ultra-high-hardness coal rock on the basis of load conditions; and when the hardness is relatively high, the cutting thickness and the cutting line distance can be decreased so as to improve the cutting capacity, and when the hardness is relatively low, the cutting thickness and the cutting line distance can be appropriately increased so as to increase the cutting speed, so that the shearer can adapt to relatively complex working conditions, thereby achieving high-quality and high-efficiency cutting.

The present invention relates to an open-pit mining machine, belonging to the technical field of mining machines. It includes a mining machine body, a cutting drum, a scraper plate, a scraper conveyor and a belt conveyor. Two groups of front crawlers are respectively fixedly connected to the front side of the mining machine body through two groups of front drive frames. The cutting drum is rotatably connected to the lower end of the front side of the mining machine body. An engine compartment is fixedly connected to the front side of the mining machine body and above the cutting drum. By setting the combination of mechanical fixing parts and permanent magnet magnetic seats, the present invention adopts a double fixing method of mechanical and non-mechanical to firmly fix the pick cutter. This fixing method not only avoids the common wear and loosening problems in traditional mechanisms, but also overcomes the possible failure risks of non-mechanical fixing methods, thus comprehensively improving the stability of the pick cutter. By setting a crushing device, the situation of uneven ore particle size is effectively solved, which is convenient for the subsequent processing of ore materials.

The invention provides an LS-DYNA and MATLAB-based pickaxe-shaped cutting pick self-rotation measuring and calculating method, which is mainly applied to the field of cutting picks for heading machines. The method comprises the following steps: firstly, establishing a simulation three-dimensional model for rotary rock breaking of the pickaxe-shaped cutting pick, setting related parameters, then carrying out erosion simulation by using LS-DYNA software, importing simulation data into MATLAB to carry out self-rotation speed conversion of the pickaxe-shaped cutting pick and angle calculation of the three methods, and comparing the simulation data with experimental values to obtain an optimal calculation value. The method makes up the blank of the calculation method of the self-rotation speed of the pickaxe-shaped cutting pick, can effectively replace the actual experiment, reduces the experiment time, reduces the experiment cost, avoids the related risk of the heading machine experiment, is flexible, and is suitable for different toothholder angles and toothholder rotation speeds.

The invention provides a manufacturing method of a hard alloy for a hard rock cutting pick, which relates to the field of alloy preparation and comprises the following steps: step 1, preparing raw material powder for preparing the hard alloy for the hard rock cutting pick according to the proportion of raw materials; 2, mixing the raw material powder in the step 1 to obtain mixed powder; 3, putting the mixed powder obtained in the step 2 into a lower mold, and pressing on a press machine to obtain a pressed blank; step 4, sintering: primary sintering: putting the pressed green body into a first sintering furnace, and sintering at a first preset temperature; secondary sintering: putting the green body subjected to primary sintering into a second sintering furnace, and sintering at a second preset temperature; and 5, the hard alloy block obtained after secondary sintering is subjected to finish machining treatment according to the design size of the hard alloy part of the hard rock cutting tooth. According to the method, double-temperature-zone sintering is conducted, impurities / stress is removed through primary sintering (protective atmosphere), and grain growth is precisely regulated and controlled through secondary sintering (vacuum).

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.

The invention relates to the technical field of hard rock excavation, in particular to hard rock multi-source mutagenesis cutting increase and multi-mode non-explosive mechanical excavation equipment and a hard rock multi-source mutagenesis cutting increase and multi-mode non-explosive mechanical excavation process. The excavation equipment comprises a walking device, and a cutting device, an excavation device, a recovery device and a cutting increase device which are all mounted on the walking device; a digging head of the digging device comprises a multi-stage cutter head telescopic structure, an impact rock breaking structure is arranged on an inner cutter head, a rolling rock breaking structure is arranged on an outer cutter head, and the multi-stage cutter head telescopic structure stretches out and draws back to achieve alternate protruding of the impact rock breaking structure and the rolling rock breaking structure. The driving mechanism drives the excavating arm to move to achieve three-dimensional movement of the excavating head and rotation around the axis of the excavating arm. According to the cutting device, the pre-cutting groove extending transversely is pre-cut in the bottom of the tunnel face, the overall strength of the tunnel face rock mass is remarkably reduced, pre-cracking weakening is conducted on the tunnel face rock mass through the cutting increasing device, the hard rock cuttable performance is improved, hard rock crushing is achieved through the rolling and impacting combined rock breaking effect, and the cutting strength of the tunnel face rock mass is improved. The device is suitable for hard rock excavation.

The invention provides a four-direction intelligent directional forward-going and backward-going perforation auxiliary cutting mechanism which comprises a protection shell, a cutting mechanism, a cutting mechanism, a cutting mechanism, a cutting mechanism, a cutting mechanism and a cutting mechanism, and is characterized in that a mounting cavity is formed in the protection shell, and a rear end cover is arranged at the rear end of the mounting cavity; the driving piece is arranged in the mounting cavity of the protective shell and is mounted on the inner end surface of the rear end cover; the eccentric block is mounted at the output end of the driving part; an inclined inner hole is formed in the end, away from the driving piece, of the eccentric block. An included angle exists between the axis of the inclined inner hole and the axis of the eccentric block. And the oscillating cutting part comprises a connecting shaft and an oscillating cutting head located at the front end of the connecting shaft, the connecting shaft is movably installed in the inclined inner hole, the end, away from the connecting shaft, of the oscillating cutting head extends out of the installation cavity, and a plurality of cutting blades are arranged on the circumference of the outer surface of the oscillating cutting head. Wherein the driving piece rotates to drive the eccentric block to rotate, and the eccentric block rotates to drive the oscillating cutting part to cyclically swing periodically, so that the cutting blade mills coal rocks. The problems that cutting resistance is large, cutting blades are seriously abraded, the dust yield is high, hard rock cutting efficiency is low, and energy consumption is large are solved.

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.

The invention relates to an intelligent control method, system, equipment and medium for automatic discharging mining tunneling cutting picks, and the method comprises the following steps: monitoring the flowing state of coal rock slag in a spiral discharging channel in real time, collecting a channel pressure difference signal and a cutting pick vibration signal, and generating discharging state characteristic parameters; blocking risk quantification is carried out on the characteristic parameters, and a real-time blocking index is generated through weighted fusion calculation; based on the index, a cutting head rotating speed optimization adjustment amount is generated through a fuzzy reasoning mechanism; and finally, generating a rotating speed control instruction through dynamic amplitude limiting processing and sending the rotating speed control instruction to a variable-frequency driving system. By means of the method, real-time sensing and dynamic self-adaptive adjustment of the blockage risk of the discharging channel are achieved, the problem that the discharging channel is blocked due to coal rock property changes is effectively solved, the discharging efficiency and the stability of tunneling operation are improved, and the service life of cutting teeth is prolonged.

A transverse cutter head for a mining machine has an outer surface including a plurality of cutting tools. Tips of the plurality of cutting tools define a virtual contour line when viewed in a cutter boom longitudinal direction and a rotation of the cutter head is considered. The contour line is formed by at least four sections, namely a first section, a second section, a third section and a fourth section. The four sections are located adjacently in this order, wherein the first section is located closest to the cutter boom and the fourth section forms a side wall cutting area. The first section and / or the fourth section run substantially straight. Each one of the first section, the second section, and the third section has a pitch angle different from the pitch angle of the other two sections. A roadheader having such a cutter head is also provided.

Mining machine (100) which features the following: a plurality of sensors (305), each of the plurality of sensors (305) being positioned at one of a plurality of measuring points on at least one component of the mining machine (100); a first electronic processor (235) coupled with and configured to be used with at least one component, to receive at least one movement order; and to control at least one component based on at least one movement command; and a second electronic processor coupled to the first electronic processor (235) and the plurality of sensors (305) and configured to determine at least one predicate parameter, wherein the at least one predicate parameter includes a rate of change of a motor parameter of the mining machine (100); to determine whether at least one predicate parameter is true; and while the first electronic processor (235) controls at least one component and at least one predicate parameter is true, to receive a large number of vibration data sets from the large number of sensors (305).

The invention relates to the technical field of tunneling equipment, in particular to transverse shaft type tunneling equipment and a spraying flow distribution mechanism thereof. The spraying flow distribution mechanism of the transverse shaft type tunneling equipment comprises a fixing assembly and a rotating assembly, the rotating assembly comprises a fixing base and an end cover which define a water pressure cavity, and the fixing assembly comprises a connecting shaft extending into the water pressure cavity through the fixing base and a flow distribution disc installed on the connecting shaft and located in the water pressure cavity. A matching face used for being attached to the valve plate is arranged on the fixing base, a water channel is arranged in the connecting shaft, the water outlet end of the connecting shaft is located on the side, facing the end cover, of the valve plate, the end cover is provided with a rotating installation hole and an end cover water channel, and the water outlet end of the connecting shaft is rotatably installed in the rotating installation hole. The end cover water channel communicates with a water outlet of the water outlet end of the connecting shaft and the water pressure cavity. The axis position of the connecting shaft is guaranteed, the coaxiality of the rotating assembly and the fixing assembly is guaranteed, and eccentric wear between the matching faces of the valve plate and the fixing base due to installation deviation is not prone to occurring.

The invention discloses a vertical feed coal mining system and a coal mining method. The vertical feed coal mining system comprises a reversed loader, a hydraulic support, a scraper conveyor, a plurality of single-drum rocker arm type drum coal mining machines and a plurality of mechanical arms, the single-drum rocker arm type drum coal mining machines can move in the arrangement direction of the scraper conveyor, and coal briquettes cut by the single-drum rocker arm type drum coal mining machines are conveyed to the reversed loader through the scraper conveyor. The multiple mechanical arms are arranged on the scraper conveyor at intervals, the multiple mechanical arms correspond to the multiple single-drum rocker arm type drum coal mining machines in a one-to-one mode, the single-drum rocker arm type drum coal mining machines are coupled and positioned with the scraper conveyor through the mechanical arms, vertical feeding is achieved under pushing of the hydraulic support, and therefore the coal mining operation method is greatly simplified, and the coal mining efficiency is improved. The problems that a fully mechanized coal mining face is difficult to level, a scraper machine is difficult to straighten and the like in a traditional beveling feed coal mining process are solved, the mining efficiency of the fully mechanized coal mining face is greatly improved, and meanwhile automation and intelligentization of the fully mechanized coal mining face are better achieved.