142results about "Driving means" patented technology

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.

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 application discloses a rock drill and a control system thereof. The control system is used for controlling a drill bit of the rock drill. The control system comprises an impact oil cylinder, a propelling oil cylinder, an impact control valve, a propelling sensor and a controller. The controller is electrically connected to the propelling sensor. The impact control valve is hydraulically connected to the impact oil cylinder. The controller is electrically connected to the impact control valve to obtain a flow of an oil circuit of the impact oil cylinder which is matched with a pressure of an oil circuit of the propelling oil cylinder when the pressure of the oil circuit of the propelling oil cylinder detected by the propelling sensor changes. The rock drill and the control system thereof have the beneficial effect that the impact frequency of the impact oil cylinder is matched with the pressure of the oil circuit of the propelling oil cylinder.

The invention relates to three-machine combined mining equipment and process, the equipment comprises a conveyor, and a main mining coal mining machine, a left notched coal mining machine and a right notched coal mining machine which take the conveyor as a moving track, and the left notched coal mining machine and the right notched coal mining machine are respectively arranged at the left end part and the right end part of the conveyor; the main mining coal mining machine is arranged between the two notching coal mining machines, the main mining coal mining machine is a double-rocker-arm coal mining machine, the left notching coal mining machine and the right notching coal mining machine are single-rocker-arm coal mining machines only provided with left rocker arms and single-rocker-arm coal mining machines only provided with right rocker arms respectively, and rocker arms of the notching coal mining machines are sliding rocker arms; during mining, the two notching coal mining machines are respectively responsible for cutting left and right end notches in advance, the main mining coal mining machine reciprocates between the two end notches to efficiently mine the middle coal wall at a high speed, the inclined cutting feed process is completely omitted, the end notch mining and the middle coal wall mining can be simultaneously carried out, and the overall mining efficiency is obviously improved.

The invention relates to the technical field of thin coal seam mining equipment, in particular to a thin coal seam mining machine with separated cavities. The thin seam mining machine arranged in the separated cavities comprises a machine body, a cover plate assembly and a lubricating assembly, the machine body comprises a first shell, a transmission shell and a third shell which are sequentially arranged at intervals in the extending direction of the machine body, the first shell is provided with a first cavity, the transmission shell is provided with a transmission cavity, the third shell is provided with a third cavity, and the cover plate assembly comprises a plurality of cover plates. The first shell, the transmission shell and the third shell are each provided with a detachably-connected cover plate, the cover plates are used for opening or sealing the corresponding first cavity, the transmission cavity or the third cavity, the lubricating assembly comprises a plurality of lubricating pumps, the cover plates are provided with liquid passing oil ways, and the output ends of the lubricating pumps communicate with inlets of the liquid passing oil ways of the cover plates. Outlets of the liquid passing oil ways of the cover plates face the directions corresponding to the bottoms of the first cavity, the transmission cavity and the third cavity. According to the thin seam coal mining machine arranged in the divided cavities, the oil way of the coal mining machine can be conveniently cleaned, and the running stability of the coal mining machine is improved.

The utility model discloses mining tunneling equipment. The mining tunneling equipment comprises a machine head, wherein a tunneling head coarse adjustment angle adjusting mechanism is arranged on one side of the machine head; the heading head coarse adjustment angle adjusting mechanism comprises a sliding rail fixedly arranged at the top of one side of the machine head, a pulley is arranged in the sliding rail in a sliding mode, a rotating plate is arranged at one end of the pulley in a rotating mode, and one end of one side of the rotating plate is fixedly connected with the top of one side of the transverse frame plate through a connecting column. The heading head can be quickly rotated to the target approximate direction in the rough adjustment stage, and time is saved; in the fine adjustment stage, accurate control can be carried out on the basis of approaching a target angle, the operation efficiency is improved, and the equipment ensures large-angle rapid adjustment, realizes high-precision micro angle correction, is particularly suitable for occasions with high requirements on the attitude of the heading head, and has remarkable advantages in operation in a complex geological environment.

The invention aims to provide a mining process for recovering section coal pillars in a double-wing retreating type continuous mining and continuous filling mode, and belongs to the technical field of coal mining. Coal pillar resources of a working face section are completely recovered through three process steps of branch roadway tunneling, mining chamber stoping and lagging filling, coal resources are avoided, and the mining efficiency is improved. Especially, resource loss caused by scarce high-quality coal resources due to the fact that section coal pillars cannot be recycled is avoided, and the resource recycling rate is increased.

The invention relates to the field of mine quarrying equipment, and discloses a cutting mechanical arm which comprises a mechanical arm body, a mechanical arm driving assembly, a rotating mechanism and a cutting mechanism. The cutting mechanism is connected with one end of the mechanical arm body through the rotating mechanism, and the rotating mechanism drives the cutting mechanism to rotate and adjust. The mechanical arm driving assembly is hinged to the middle of the mechanical arm body, and the mechanical arm driving assembly drives the mechanical arm body to drive the cutting mechanism to ascend or descend. The cutting mechanical arm has the advantages that the whole cutting mechanical arm is simple in structure, the complexity of the whole structure can be reduced, and therefore the cost is reduced; it can be guaranteed that the two independent cutting modules of the cutting mechanism can cut mine stone in the vertical state, and the cutting effect is guaranteed.

The invention relates to a slippage type cutting system of a coal mining machine, which comprises a slippage part, a non-slippage part and a slippage oil cylinder, the slippage part and the non-slippage part are in sliding connection left and right through the matching of a guide chute and a guide slide rail, and the two ends of the slippage oil cylinder are respectively hinged on the slippage part and the non-slippage part; an upper row of supporting oil cylinders and a lower row of supporting oil cylinders are further arranged at the outer end of the non-sliding part, each row of supporting oil cylinders are arranged at intervals in the front-back direction, and when the sliding part moves to the front position or the rear position relative to the non-sliding part, piston rods of the upper row of supporting oil cylinders and the lower row of supporting oil cylinders located on the front portion or the rear portion extend to the sliding part and abut against the guide sliding rails. The piston rod retracts to break away from the sliding part. When the device is applied to the mining and drilling all-in-one machine, the conveyor can be normally pushed in each coal mining stroke, a passing space does not need to be reserved for a roller which stops in the drilling operation, the gas drilling drainage operation of a working face is greatly facilitated, and the mining efficiency of the mining and drilling all-in-one machine is improved.

The application discloses a short-body fully-mechanized excavator for coal mine tunneling, which comprises a rack, a walking part, a shovel plate part, a cutting part and a conveyer scraper; the rack is connected with the track assembly of the walking part through a rotating mechanism; the cutting part comprises a folding cutting arm and a transverse shaft type cutting head; one end of the cutting arm is hinged to the rack, and the other end of the cutting arm is fixed with the cutting head; the shovel plate part is connected to the front end of the rack; one conveyer scraper passes through and is arranged on the track assembly; the front end and the tail end of the conveyer scraper extend to the front end of the rack and the tail end of the rack respectively. Advantages: the body is greatly reduced compared with the conventional machine type, and is suitable for narrow lane, sharp turning, continuous mining and continuous charging working face branch lane frequent opening scene; through the adjustment of the coal conveying direction of the conveyer scraper, the rack rotation and the linkage of the cutting arm, the rapid opening operation and continuous transportation of the lane are realized, and the construction efficiency is greatly improved.

The invention belongs to the technical field of mining equipment, and discloses a power crushing system of a thin seam mining machine, which comprises a duplex gear pump driven by a motor and comprising a first gear pump and a second gear pump, an oil tank is connected to the first gear pump and the second gear pump, an oil outlet of the first gear pump is connected to a hydraulic unit and a crushing device driving unit, and an oil outlet of the second gear pump is connected to a hydraulic unit; an oil outlet of the second gear pump is connected into the power crushing loop; the power crushing loop comprises a crushing electromagnetic valve, a crushing main control valve and a power crushing device which are connected in sequence, the power crushing device is mounted on a rocker arm of the coal mining machine in the reverse coal flow direction, and the second gear pump is connected with the crushing electromagnetic valve; the crushing device driving unit comprises an electromagnetic reversing valve, a manual-hydraulic reversing valve, a one-way throttle valve, a hydraulic lock and a crushing device oil cylinder which are connected in sequence, and the crushing device oil cylinder is used for driving the power crushing device to swing up and down. Through the innovative design of the hydraulic system of the coal mining machine, the crushing capacity of the crushing device can be effectively improved.

The invention relates to a shearer loader for longwall mining, having a machine body (1) which is movable along a face conveyor (7) in the longitudinal direction (S) of the longwall by means of a drive device and having at least two drum arms (4) which are pivotally attached to the machine body (1) and at the free ends of each of which a cutting drum (5) is rotatably mounted, the machine body (1) having a support structure which is formed by a bracing of at least two support elements (3) in the longitudinal direction (S) of the longwall, and the machine body (1) comprising functional units (2). The aim of the invention is to further develop the shearer loader in such a way that the structural design of the machine body (1) allows larger dimensions of the shearer loader in order to work face thicknesses of 10 m and more. According to the invention, this is achieved in that the support elements (3) are designed as frame elements (8), each of which has an installation space (9) for the functional units (2).

The application discloses a kind of permanent magnet synchronous motor electric shovel speed regulation system and motor control method, belong to mining equipment technical field, including: main transformer, rectification feedback unit, several permanent magnet synchronous motors, several frequency converters and voltage suppressor, by using permanent magnet synchronous motor as power source, the efficiency and power factor of motor in low speed area are higher, realize efficient, energy-saving green mining, electric shovel each mechanism can also adopt direct drive or half direct drive mode, reduce mechanism transmission series, further improve transmission efficiency and equipment reliability;Since the rotor of permanent magnet synchronous motor is permanent magnet, when the frequency converter fails and the brake fails at the same time, the motor will generate back electromotive force when being pulled by potential energy load, according to the power generation characteristics of permanent magnet synchronous motor, the stator is short-circuited through energy consumption device, which will generate braking torque in permanent magnet synchronous motor, so as to brake the bucket, avoid the bucket falling rapidly, electric shovel out of control accident.

The utility model relates to the technical field of coal mine mining pressure prevention and control, in particular to a coal mine fully mechanized coal mining face suspended roof cutting device which comprises an installation bin, a cutting wheel and a clamping unit, and the clamping unit comprises a fixing base, a clamping plate shaft, a square column, a square bin, a rotating shaft, an installation frame, an air cylinder, a rotating base, a power assembly and a lifting assembly. The clamping plate penetrates through the square column to make contact with the clamping plate shaft, the controller is clicked to start the air cylinder, the air cylinder abuts against the rotating base to be close to the rotating shaft till the square column and the square column are matched, at the moment, the rotating base plays a role in abutting against the rotating shaft and can also be matched with the cutting wheel to rotate, and the dismounting mode is opposite to the mounting mode; and the lifting assembly is used for adjusting the height of the mounting bin, so that the cutting wheel is quickly mounted in this way, the time consumed for mounting the cutting wheel is shortened, the workload of workers is reduced, and the working efficiency of the workers is improved.

The invention discloses a coal mining machine and a rocker arm transmission device and a rocker arm transmission method thereof, and belongs to the technical field of coal mining machines, the rocker arm transmission device comprises a rocker arm shell, a first shell arranged at the bottom of one end of the rocker arm shell, a second shell arranged at the top of the other end of the rocker arm shell, and a control unit arranged in the coal mining machine, a first chain wheel is arranged in one end of the rocker arm shell, a second chain wheel is arranged in the other end of the rocker arm shell, a transmission chain is arranged between the first chain wheel and the second chain wheel, and the transmission chain is connected to the periphery of the first chain wheel and the periphery of the second chain wheel in a meshed mode and arranged in the rocker arm shell. The permanent magnet motor is adopted to replace a traditional asynchronous motor, a straight tooth transmission gear is omitted, the mechanical transmission distance is shortened, the problem that a traditional rocker arm is poor in lubricating, cooling and cutting capacity and electricity-saving performance is solved, the mechanical fault rate of a system is reduced, the production efficiency is further improved, and due to the fact that the permanent magnet motor is simple in structure, the inner structure of the rocker arm is simplified. And the maintenance complexity is reduced.

The application discloses a multifunctional tunneling machine, which comprises a rack body, walking mechanisms arranged on both sides of the rack body, a rack assembly, a telescopic mechanism arranged above the rack assembly, a slide arranged above the rack assembly, a slide rail arranged on the slide, a telescopic pushing oil cylinder arranged between the rear end of the slide rail and the rack assembly, a rotary support fixedly connected to the slide rail, a rotary ear frame arranged on the rotary support and capable of rotating around the axis of the rotary support, a cutting mechanism connected to the rotary ear frame and capable of swinging up and down, and a full-width loading mechanism arranged in front of the rack assembly and used for collecting materials. The whole telescopic mechanism has a large bearing area and is capable of resisting impact. The full-width loading mechanism realizes full-width loading, reduces the frequent adjustment of the whole machine during loading, and improves the loading efficiency.

The application provides a cutting height adjustable isohypse thin coal seam shearer, and belongs to the technical field of coal mining equipment. The shearer comprises a coal wall side shoe assembly I, a coal wall side shoe assembly II, a mined-out side shoe assembly I, a mined-out side shoe assembly II, a shearer body, a height adjusting oil cylinder, a filling oil cylinder and a cutting drum. Four corners of the lower part of the shearer body are respectively provided with a coal wall side shoe installation position I and a coal wall side shoe installation position II facing the coal wall side, and a mined-out side shoe installation position I and a mined-out side shoe installation position II facing the mined-out side. The coal wall side shoe assembly I, the coal wall side shoe assembly II, the mined-out side shoe assembly I and the mined-out side shoe assembly II are respectively installed on the coal wall side shoe installation position I, the coal wall side shoe installation position II, the mined-out side shoe installation position I and the mined-out side shoe installation position II. The application can realize the overall height adjustment of the isohypse thin coal seam shearer and the height adjustment during the cutting along the working face (strike) and the vertical working face (dip).

The application provides a drilling and slotting integrated device and method for hydraulic fracturing, relates to the technical field of coal mining, and is used for drilling or slotting under the action of a power mechanism and comprises a body, a drill bit, a cutting tool body and a driving piece. The body is provided with a cutting tool body storage part, and an opening part for the blade part of the cutting tool body to extend out of the body is arranged on the body at a position corresponding to the cutting tool body storage part; the drill bit is arranged on the body and is provided with a cutting end for drilling; the cutting tool body is arranged in the cutting tool body storage part and is provided with a blade part for slotting the side wall of the hole drilled by the drill bit; and the driving piece is connected with the cutting tool body to drive the cutting tool body to move so that the blade part of the cutting tool body extends out of the body from the opening part. The integrated device can complete the drilling process and the slotting process at one time without changing the original drilling process, is convenient to use, reliable in performance, and reduces the working intensity of the on-site construction personnel.

The invention belongs to the technical field of intelligent mining of coal mines, and discloses an intelligent cooperative control system for an underground mining working face of a coal mine. Whole-process intelligent cooperative control is realized through deformation monitoring of the scraper conveyor, actual geometric morphology construction, reference drift tensor field calculation, dynamic correction of a coal cutting track, abnormal recognition of a bottom plate and self-adaptive adjustment of control parameters. Identifying a bending deformation section of the conveyor, constructing an actual geometrical shape curve, and calculating a reference drift tensor field of each position of a working surface; performing space coordinate transformation on the original memory coal cutting track of the coal mining machine to generate a corrected target coal cutting track; recognizing a bottom plate fluctuation abnormal area by combining hydraulic support monitoring data, and dynamically adjusting a coal cutter roller lifting control gain and a propulsion speed compensation coefficient; and realizing closed-loop adaptive control by analyzing and identifying a secondary deformation signal and iteratively updating a reference drift tensor field. The bottom plate flatness and the coal seam recovery rate are improved, and equipment abrasion and accident risks are reduced.

A machine for excavating rock includes a frame, a cutting device, and a boom. The cutting device includes a cutting disc having a cutting edge, the cutting disc being rotatable about a cutting device axis. The boom supports the cutting device and includes a first end, a second end, and a boom axis substantially parallel to the cutting device axis. The boom further includes a first portion and a second portion. The first portion is connected to the frame for rotation about a first pivot axis between a raised position and a lowered position. The second portion is connected to the cutting device, and the second portion is pivotable about a second pivot axis between a raised position and a lowered position.

The coal mining machine comprises a machine body, positioning devices for stable positioning are arranged on the front side and the rear side of the machine body, supporting frames are rotationally connected to the left end and the right end of the machine body, first hydraulic cylinders are rotationally connected between the supporting frames and the bottom end of the machine body, and vertical buffering assemblies are arranged on the front sides of the supporting frames. And a transverse buffering assembly is arranged on the front side of the vertical buffering assembly, a first motor is arranged in the transverse buffering assembly, and a cutting roller is fixedly installed at the output end of the first motor. By means of the vertical buffering assembly, the transverse buffering assembly, the first motor, the cutting roller and the positioning device, the mining impact force can be buffered, abrasion of the cutting roller is reduced, the service life of the cutting roller is prolonged, and the operation stability is further improved.

The invention relates to high-gas easy-to-collapse coal seam drilling and mining collaborative equipment and process, a mining and drilling integrated coal mining machine and a conventional coal mining machine are adopted to focus on drilling and coal mining respectively, and the mining and drilling integrated coal mining machine comprises a single-rocker-arm or double-rocker-arm coal mining machine and a drilling machine system arranged on the top surface of a machine body of the coal mining machine; a plurality of drilling machines of the drilling machine system are arranged at intervals along the length direction of the machine body; drilling machine power heads point to the coal wall side of the coal mining machine; the technology comprises the steps of equipment preparation, drilling and coal mining, one-round or continuous multi-round coal cutting is carried out after drilling is carried out on the coal wall of the whole working face every time, two cutters are cut in each round, a mining and drilling integrated coal mining machine is only responsible for cutting the stopping end of the mining and drilling integrated coal mining machine, the rest of the mining and drilling integrated coal mining machine is borne by a conventional coal mining machine, and during coal cutting, the mining and drilling integrated coal mining machine slides and then pulls a frame along with the mining and drilling integrated coal mining machine; and the collapsed coal wall is always supported by the telescopic beam, the first-stage side protection plate and the second-stage side protection plate of the bracket. According to the invention, drilling and coal mining are automatically and alternately carried out, and the drilling machine is automatically moved, so that the efficiency is improved, and the safety is improved.

The invention belongs to the technical field of mining machinery, and relates to an external oil supplementing type shovel plate for a continuous mining machine and a using method of the external oil supplementing type shovel plate. Comprising a shovel plate body, the transmission system is arranged in the shovel plate body; the transmission system comprises a motor and a speed reducer; the speed reducer comprises a high-speed section and a low-speed section connected with the high-speed section; the output end of the motor is connected with the input end of the high-speed section; a high-speed section upper oil port and a high-speed section lower oil port are formed in the shell of the high-speed section; a low-speed section upper oil port and a low-speed section lower oil port are formed in the shell of the low-speed section; a star wheel is arranged on the upper surface of the shovel plate body and is connected with the output end of the low-speed section; the oil supplementing device is arranged outside the shovel plate body, and a high-speed section upper oil level opening, a high-speed section lower oil level opening, a low-speed section upper oil level opening and a low-speed section lower oil level opening are formed in the oil supplementing device; and an oil level gauge is arranged on the side wall of the oil device. The oil supplementing pipeline of the speed reducer is directly led out to the oil supplementing device outside the shovel plate, and convenient oil supplementing operation is achieved.

The application discloses a six-degree-of-freedom heavy-load lifting telescopic system for coal mines, and relates to the field of coal mine construction equipment.The six-degree-of-freedom heavy-load lifting telescopic system comprises a swing assembly and a telescopic working arm.The swing assembly comprises a support frame and a swing fixing frame, a swing oil cylinder is connected to the machine body through a swing oil cylinder fixing seat, and the working end of the swing oil cylinder is hinged to the bottom of the swing fixing frame.The working arm and one end of a lifting oil cylinder are hinged to the swing fixing frame, the lifting oil cylinder is hinged below the middle part of the working arm, the other end of the working arm is connected with a swing motor through a swing motor mounting seat, the output end of the swing motor is connected with a rotary speed reducer, the front end of the working arm is connected with a leveling oil cylinder, and the telescopic rod of the leveling oil cylinder is hinged to the swing motor mounting seat.The six-degree-of-freedom heavy-load lifting telescopic system has reasonable layout, simple structure, small occupied space, realizes six-degree-of-freedom movement, meets the full-automatic operation demand of the roadway cross section operation, saves the labor cost and the time wasted by man-machine alternation, and greatly improves the operation efficiency.

The invention discloses a top coal end support structure and a fully mechanized caving face coal mining system, and relates to the technical field of coal mining, and the top coal end support structure comprises a tail end main beam used for supporting a top plate coal seam located at the tail end of a mining path; the first crushing parts protrude out of the surface of the tail end main beam, and the first crushing parts are used for extruding a roof coal seam to loosen the roof coal seam; the shield beam is connected to the tail end main beam, is arranged close to the first crushing part and is used for receiving crushed coal falling from the roof coal seam; the swing beam is rotatably connected to the shield beam; the second crushing part is connected to the swing beam, the second crushing part can swing along with the swing beam, and the swing of the second crushing part is used for crushing the loosened roof coal seam to form crushed coal. According to the top coal end support structure, the supporting requirement for the roof coal seam is met through the arrangement of the tail end main beam, the crushing mining requirement for the roof coal seam is met through the first crushing part and the second crushing part, and the top coal recovery rate of the fully mechanized caving face is increased.

The utility model relates to the technical field of mining operation devices, in particular to a mining operation device suitable for a narrow space, which comprises a fixing frame, a fixing circular plate is fixedly connected to the front side of the outer wall of the fixing frame, and a gear sleeve is fixedly connected to the inner wall of the fixing circular plate close to the front side. A motor is fixedly connected to the rear side of the outer wall of the fixed circular plate, a first transmission shaft is fixedly connected to the output end of the motor, a first gear is fixedly connected to the middle of the outer wall of the first transmission shaft, second gears are connected to the periphery of the outer wall of the first gear in a meshed mode, and the outer walls of the multiple second gears are meshed with the inner wall of a gear sleeve; the inner walls of the second gears are fixedly connected with second transmission shafts, and the front ends of the second transmission shafts are fixedly connected with secondary drill bits. According to the utility model, the motor is fixed on the rear side of the outer wall of the fixing frame, so that the working capacity in a narrow space is realized, the automation is high, the labor work can be reduced, and the use requirements are met.

The application provides a single drum coal cutter feed process. The single drum coal cutter feed process comprises single drum coal cutter bevel feed in a middle area of a coal channel; the single drum coal cutter moves towards an end of the coal channel, and supports in a moving area perform a follow-up support pulling action; the single drum coal cutter and supports in an end area of the coal channel signal induction, and the single drum coal cutter performs movement towards an end tail of the coal channel; the single drum coal cutter and supports in a middle area of the coal channel signal induction, and the single drum coal cutter performs single drum overturning; the single drum coal cutter and supports in an end tail area of the coal channel signal induction, and the single drum coal cutter performs single drum overturning and starts to move towards the end of the coal channel; the single drum coal cutter and supports in the end area of the coal channel signal induction, and the single drum coal cutter moves towards the end tail of the coal channel; and the single drum coal cutter and supports in the middle area of the coal channel signal induction, and the single drum coal cutter performs bevel feed. The single drum coal cutter feed process provided by the application can solve the problem of inconvenience in use of the single drum coal cutter in the prior art.

The invention relates to the field of coal mine intelligent mining, and particularly discloses coal mine intelligent mining equipment and an informatization management system thereof, and the equipment comprises a mining mechanism which comprises a hydraulic propulsion assembly and a drilling assembly arranged at one end of the hydraulic propulsion assembly; the lifting mechanism comprises a supporting frame assembly used for supporting the hydraulic propelling assembly and a lifting assembly installed on the supporting frame assembly, and the lifting assembly can drive the hydraulic propelling assembly to move up and down along the supporting frame assembly; by controlling cooperative work of the hydraulic cylinder and the first motor, efficient drilling of the drill bit on a coal mining face is achieved; when large coal bodies fall off, the hydraulic propelling assembly can rapidly descend to the position above the coal blocks through adjustment of the lifting assembly, the large coal bodies are clamped to be broken through the clamping effect of the first clamping plate and the second clamping plate, follow-up transfer and treatment are facilitated, and the continuity and efficiency of mining operation are improved.

The rock drill impact mechanism provided by the application comprises an impact piston and a drill bit installed in a rock drill barrel, and the inside of the rock drill barrel is provided with a cylinder body; the impact piston is installed in the cylinder body; the cylinder body is provided with a cavity for accommodating the impact piston, the impact piston can make axial reciprocating movement along the center of the cavity under the pushing of hydraulic oil, and the head of the impact piston can pass through the cavity and impact the tail of the drill bit; the cavity comprises a front piston cavity and a rear piston cavity, the front piston cavity and the rear piston cavity are communicated, the front piston cavity is used for oil inlet, and the rear piston cavity is used for oil return. The application does not need to use a traditional reversing valve to control the reciprocating movement of the impact piston, can reduce the energy loss when the reversing valve moves, shorten the oil way switching time, improve the reversing efficiency of the impact piston, and is lower in use cost and maintenance cost.

The present application relates to coal mining technology field and disclose a kind of cutting mechanism and coal winning machine, the cutting mechanism includes rocker housing, drum cutting part, drive motor, transmission module and buffer assembly, drum cutting part is connected with rocker housing, drum cutting part includes rotatable cutting execution component and the drive end of driving cutting execution component rotation, drive motor is installed on rocker housing and has output end, transmission module includes mounting plate and the gear set being set on mounting plate, mounting plate is detachably arranged in rocker housing, gear set connects output end and drive end, to transmit the power of drive motor to cutting execution component, buffer assembly is arranged between mounting plate and rocker housing, for buffering the vibration received by transmission module and limiting the displacement of mounting plate in multiple directions relative to rocker housing.The cutting mechanism of the embodiment of the present application can realize the quick maintenance and replacement of transmission module, and can slow down the transmission of vibration, ensure the stable transmission of power.