118results about How to "Does not take up much space" patented technology

A rotating axle-type electric window opener features that a pair of hinges is arranged between window frame and window sash, a rotating axle passing through then is driven by an electric motor via worm gear speed reducer, controllable engaged clutch and a pair of internally engaged gears for opening the window sash, an electromagnet controlled lock is installed between window frame and window sash, and a handle for manually opening the window sash is arranged.

The invention discloses a culture device for a white fly and tetranychid mite feeding experiment and a method for conducting experiment using the same. The culture device comprises a culture dish and a sealing device covering the culture dish, wherein a water agar plate is arranged in the culture dish; the sealing device covering the culture dish is provided with multiple air holes; and the water agar comprises agar and water in a mass ratio of 1:50. When the culture device for the white fly and tetranychid mite feeding experiment is used to conduct experiment, the leave is separated and can be sheared into any shape without using the entire leave as the experimental material, thereby avoiding influence on the experiment caused by the limitation under space, temperature and humidity when the living plant or cut plant is used as the experimental material; and the experimental conditions are easy to control, and the operation is simple. Moreover, the problem of relatively large error between the repeated experiments for the same treatment caused by differences in height, size and strongness of the living plants or cut plants can be overcome.

The present invention discloses a magneto-rheological dampers-tuned liquid column, which includes a horizontal tube at the bottom of the U-shaped tube,its character is: In the horizontal segment of he U-tube installed a magneto-rheological fluid damper, the ends of core rod are located in the corresponding external the Magneto-rheological fluid damper, between the end of the steel tube of the magneto-rheologica fluid damper and core rob installed a sealed structure. Two ends of the core rob are fixed pistons which can move in axial direction attending the core rob and keep apart from the two sides of the piston sealed in the horizontal tube. It adapts to the magneto-rheological fliud damper to control damper force, so that the characteristics of the invention is energy small, simple structure, low cost, easy to control adm high efficiency.

The invention relates to a fatigue test method of a wind driven generator blade. The method is characterized by comprising the following steps: the blade to be tested is connected with a hub through a connecting flange, the hub is fixed to a support, and then the static load test is performed; a motor with a frequency converter is connected with an eccentric wheel through a speed reducer, and therefore a shock excitation loading device is combined and is fixed to the blade, the blade generates resonance, the blade vibration frequency is obtained, and if the blade is not damaged within the required vibration frequency, the blade has the enough fatigue strength. The method has the beneficial effects that the blade test efficiency is improved, the experiment test period is shortened, the occupied space is not large, equipment for testing is small, the experiment test cost is reduced, the power cost requirement is small, the experiment position can be moved, and the fixed site is not required to be occupied.

The invention discloses an embroidery machine and belongs to the technical field of embroidery. The embroidery machine comprises an embroidery machine head, a shuttle box, a thread buckling device anda thread trimming device, wherein a rotating shuttle is arranged in the shuttle box; the thread buckling device comprises thread buckling parts which are movably arranged on the shuttle box and are used for buckling the rotating shuttle; the thread trimming device comprises a fixed cutter and moving cutters moving relatively to the fixed cutter. The embroidery machine is characterized in that thethread buckling device also comprises a driving rotation shaft rotatably arranged on the shuttle box; at least two thread buckling parts are connected with the driving rotation shaft simultaneously;the thread trimming device comprises a main driving connection rod and branched connection rods; at least two branched connection rods are arranged on the main driving connection rod simultaneously; each branched connection rod drives the moving cutters to move respectively; the driving rotation shaft is driven by a first driver and drives at least two thread buckling parts to work; the main driving connection rod is driven by a second driver and drives at least two moving cutters to move. The embroidery machine disclosed by the invention has the advantages that the structures of the thread buckling device and the thread trimming device are simplified, and the requirements of the installation space are reduced.

The invention relates to a freely suspended adjustable locking device for a dial of a computer seamless underwear knitting machine, which belongs to the technical field of underwear machines. The device comprises a machine head aluminum seat, a synchronous belt pulley, a Huff dial, a Huff dial fixing seat and a Huff-pin triangular fixing dial, wherein the synchronous belt pulley, a Huff dial driving shaft, the Huff dial fixing seat and the Huff dial are connected integrally and are freely suspended on the machine head aluminum seat; an installing hole of the machine head aluminum seat is provided with a tension assembly for positioning the synchronous belt pulley in an axial direction; an adjustment positioning shaft sleeve is sleeved on the lower end of a needle roller bearing seat; the barrel body of the adjustment positioning shaft sleeve is provided with two limiting blocks; the machine head aluminum seat is provided with an upper adjusting bolt and a lower adjusting bolt; and the Huff-pin triangular fixing dial is connected with the Huff dial seat through a small plane bearing. The device meets the requirements on convenient adjustment of up and down movement of the Huff dial and the knitting aiming at different textiles at the same time, and can realize further fine adjustment; and the Huff dial is convenient to install, adjust and maintain because of the adoption of a freely suspended mode with a locking function.

The invention discloses a cooling device of a large-scale motor. The cooling device comprises an evaporator heat pipe set, a condenser heat pipe set and temperature sensors, wherein the upper end of the evaporator heat pipe set is communicated with an evaporator air collecting pipe, the lower end of the evaporator heat pipe set is communicated with an evaporator liquid separating pipe, the upper end of the condenser heat pipe set is communicated with a condenser air separating pipe, the lower end of the condenser heat pipe set is communicated with a condenser liquid collecting pipe, a condenser fan is arranged at the back side of the condenser liquid collecting pipe, the evaporator air collecting pipe is communicated with the condenser air separating pipe through an air pipe connecting pipe, the evaporator liquid separating pipe is communicated with the condenser liquid collecting pipe through a liquid pipe connecting pipe, the temperature sensors are installed on the evaporator air collecting pipe and the condenser liquid collecting pipe respectively, and the temperature sensors and the condenser fan are respectively connected with a controller. The cooling device can lower the temperature of circulating air entering the motor, can improve efficiency of heat exchange between the air and a motor winding, and obviously cools the motor.

The invention discloses an automatic lifting device for a wind speed monitor for a wind tunnel. The automatic lifting device comprises a bottom plate; a portal bracket is fixedly connected to the bottom plate; a rotating threaded stand column is arranged between a cross beam at the top of the portal bracket and the bottom plate; inclined supporting rods are respectively and fixedly connected between the tops of the two stand columns of the portal brackets and the bottom plate; a horizontal lifting bracket is movably connected to the two stand columns of the portal bracket and the rotating threaded stand column through a transverse bracket of the horizontal lifting bracket; a three-dimensional pulsation anemometer is fixedly connected to an extending bracket of the horizontal lifting bracket; a gear transmission device is connected to the bottom of the rotating threaded stand column, and is sequentially connected with a stepping motor and a pulse signal receiver which are mounted on the bottom plate; and the pulse signal receiver is connected with a programmable stepping motor controller positioned outside the bottom plate through a connecting wire. The automatic lifting device is simple in structure, low in cost, clear in operating principle, and good in real effect, and occupies a small space.

The invention belongs to the field of deep sea structures, and in particular discloses a sliding track bracket for a fixing deep sea pressure-resistant cabin. A cabin cover clamping plate and a mounting support rack are arranged front and back; both sides of the cabin cover clamping plate and the mounting support rack are connected through sliding tracks; the sliding tracks comprise guide tubes and guide rods; the guide tubes are connected with one side of the mounting support rack; one end of each guide rod is connected with the cabin cover clamping plate on a same side; the other ends of theguide rods penetrate into the guide tubes and stretch and withdraw relatively; a fixed pressure-resistant cabin is arranged on the mounting support rack; a cabin fixing belt is arranged on the pressure-resistant cabin; both sides of the cabin fixing belt are respectively connected with both sides of the mounting support rack to fix the pressure-resistant cabin; a pressure-resistant cabin cap is clamped on the cabin cover clamping plate; and the guide rods are stretched and withdrawn relative to the guide tubes, then the pressure-resistant cabin cap is driven by the cabin cover clamping plateto make reciprocation movement, and opening and closure of the pressure-resistant cabin are achieved. The sliding track bracket is simple in structure mode, convenient to mount, and applicable to mounting of pressure-resistant cabins of different sizes, a small space is occupied after mounting, and convenience can be brought to equipment arrangement.

The invention provides a method for converting two-dimensional code contents into pure digital symbol codes. The method comprises the steps of storing binary data to be coded in a two-dimensional code as a byte array; performing division by taking two bytes as a group, and if one byte is left finally, enabling the final byte to serve as a separate group; and according to the groups, defaulting low address bytes in each group to high value bytes of digits, defaulting high address bytes in each group to low value bytes of the digits, converting each group of bytes into decimal Arabic digits, and combining conversion results into a string of Arabic characters. According to the method, a mode of transcoding first and coding second is proposed, so that the problem of high crash probability or unfriendly display of a universal two-dimensional code scanning device during two-dimensional code scanning is avoided, namely, binary contents unreadable for naked eyes can be converted into common Arabic digits; and original data is subjected to format transcoding, and a transcoding rule is determined, so that the occupied space is expanded a little after transcoding.

The invention discloses a slewing bearing comprising a jacket part in connection with a turntable and an embedded part in connection with a frame. The embedded part is nested in the jacket part, and the axial segment of the embedded part stretches out from a circular opening of the jacket part. Between the radial segment of the embedded part and the upper and lower inner wall of the jacket part, two rings of upper rollers and two rings of lower rollers are respectively arranged. An outer ring of middle roller is mounted between an outer circumferential surface of the radial segment and an inner inside wall of the outer circumference of the jacket part. And the slewing bearing is characterized in that an inner ring of middle roller is disposed between an inner circumferential surface of the radial segment and an inner inside wall of the inner circumference of the jacket part, and the outer ring of middle roller and the inner ring of middle roller are positioned in one plane. The slewing bearing of the invention can reduce radial friction, lower rotary resisting moment, improving transmission uniformity of forces, so that the radial bearing capacity of the slewing bearing can be further enhanced. The invention also discloses a crane containing the above slewing bearing.

The invention discloses an automatic rotary uterine lifting device and a method thereof, comprising a swinging structure, a rotating structure, an airbag assembly, a height adjusting structure and a support structure. The swing structure comprises a swing uterus rod, a crown wheel, a swing uterus rod shaft, a spur gear, a spur gear shaft, a second coupling and a second motor, wherein the head of the swing uterus rod is connected with a lifting cup and an air bag assembly. The rotating structure includes a rotating rod, a uniaxial pressure sensor, a first electric machine and a first coupling.The height adjusting structure comprises a sliding table, a sliding rail, a rack, a handle fixture and a handle, wherein a first motor of the rotating structure is connected with the sliding table ofthe height adjusting structure. The feeding system comprises a support seat, a rail and a support frame. The execution structure of uterine lifter can swing properly, rotate 360 degrees and feed forward and backward, which can solve the problem of low efficiency of manual adjustment of uterine lever, waste of human resources and simplify the operation process.

The invention provides a collapsible student desk for lunch break. The collapsible student desk comprises a desk board and a leg for supporting the desk board, a long board is vertically arranged at one side of the desk board, the leg includes connecting rods and a supporting frame, one ends of the connecting rods are fixedly connected with the desk board, and the other ends of the connecting rodsare rotatably connected with the supporting frame; and the connecting rods and the supporting frame form a table top when positioned in a first rotating fit manner, and form a bed surface when positioned in a second rotating fit manner. The collapsible student desk is folded to form the table top for learning and the bed surface for lunch break, realizes the learning and lunch break dual uses ofa desk only by designing the rotary connection between the connecting rods and the supporting frame, and can provide a position for the lunch break; and the collapsible student desk also has the advantages of simple structure, easiness manufacture and small occupied space.

The invention provides a box-shaped water purifying device for drinking water. Multiple filter bottles and a water storage tank (1) are arranged in a case of the box-shaped water purifying device; each filter element is mounted in each filter bottle; the water storage tank (1) is provided with water tank water outlet holes (18); the case is provided with a side gap (19); the box-shaped water purifying device is provided with a rotational water outlet device; the rotational water outlet device comprises a water outlet tap (20) and a tap rotating mechanism; the water outlet tap (20) is connectedwith the water tank water outlet holes (18) in the bottom of the water storage box (1); the water outlet tap (20) is usually located in the side gap (19), and is rotated to the exterior of the side gap (19) when in use. The water storage tank is provided with multiple water outlet openings; purified water is conveniently intensively taken; stored water in the water storage tank can be directly completely discharged; the water storage tank is conveniently washed, and the solution of the box-shaped water purifying device for the drinking water, which suitably uses 10-inch filter elements whichcan be independently replaced, is quick in filtration and large in water storage amount and is further compact and reasonable in the structure of the case and the assembly structure of the case and internal components in the case, is further provided.

The invention discloses a method of a signal-classified digital wireless broadcast system, which comprises the following steps: sub-managing and broadcasting the classification information; receiving the information at a receiving terminal, recovering and detecting the information; and keeping the information passing the detection for later use. The signal-classified digital wireless broadcast system manufactured by the method consists of a digital wireless broadcast transmitting station and a receiving terminal. The receiving terminal of the signal-classified digital wireless broadcast system manufactured by the method consists of a main control circuit, a storage device and a display screen and is characterized by comprising a digital wireless broadcast signal receiving module, an information detection module and a channel automatic switching / or multi-channel parallel receiving module. According to the method disclosed by the invention, multiple tasks can be implemented at the same time by use of one transmitting channel, including the warning refreshing of 5 million mobile terminals within 0.1 second, mass downloading of news information without paying and establishment of e-community and e-government affairs. The display of the receiving terminal can be integrally manufactured with a mirror, an electronic picture frame, an interior wall and a door window or be embedded into a shell of a kitchen range hood / refrigerator and into the furniture surface.

The invention discloses a household solid heat accumulating type electric heat supply system and a heat supply method thereof. The household solid heat accumulating type electric heat supply system and the heat supply method thereof solve the problems that a common solid heat accumulating type electric boiler used at present is large in occupied area and high in separate installation cost, and electric heater heating is small in heat supply area, causes dry indoor air, and cannot solve other demands such as domestic hot water demands. The household solid heat accumulating type electric heat supply system comprises a heat accumulator and a heating radiator, wherein the heat accumulator comprises a support and a heat insulation case which wraps the support, a heating and heat accumulating assembly is arranged in the heat insulation case, a heat exchange assembly is arranged above the heating and heat accumulating assembly, the heat exchange assembly comprises fins and a heat exchange pipe, a water inlet of the heat exchange pipe is connected with a water outlet of the heating radiator, and a water outlet of the heat exchange pipe is respectively connected with a water inlet of the heating radiator and a domestic hot water pipeline. The household solid heat accumulating type electric heat supply system is butted with an existing heating pipeline in a house, delivers heat into eachroom in the house, and overall improves indoor temperature, and furthermore the heat exchange pipe is directly connected or indirectly connected with the domestic hot water pipeline in the house forproviding domestic hot water.

The invention discloses an umbrella wind resistance testing machine, comprising a fixed rod, a slide rail, a casing, a fan blade and a storage box. A wind sensor is installed on the upper end of the fixed rod, and a clamp is fixed on the surface of the fixed rod. The fixed rod is provided with a rotator, the slide rail is connected with the fixed rod, the left side of the casing is provided with an air outlet, the right side of the fan blade is provided with a gearbox, and the upper part of the gearbox A drive motor is fixed, a processor is arranged below the gearbox, and the storage box is connected with the casing. The umbrella wind resistance testing machine is equipped with a storage box, which can store some parts of the device, takes up little space, and is equipped with a mobile base, which is convenient to carry. Stable, the whole umbrella will not be blown away when subjected to strong winds, better quality inspection of umbrellas, ensure that the quality of the umbrellas that leave the factory is qualified, and bring help to people's lives.

The invention discloses an H-shaped stiffening rib structure for prolonging the service life of a steel pipe concrete tubular joint. The H-shaped stiffening rib structure is used for effectively reducing the fatigue stress amplitude of the steel pipe concrete tubular joint so as to prolong the service life of the joint. The H-shaped stiffening rib structure comprises a main chord pipe and web pipes which are welded with the main chord pipe in a penetrating manner at the positions of joints. An H-shaped stiffening rib is arranged at each of the positions, with relatively great penetrating welding seam stress, between the main chord pipe and each of the web pipes, and adjacent web pipes; each H-shaped stiffening rib is adhered and bonded to the surface of each of the corresponding main chord pipe, web pipes or adjacent web pipes.

The invention discloses a co-driver cab electronic control auxiliary brake method and a co-driver cab electronic control auxiliary brake device. By the method, the rotating angle of a co-driver cab brake pedal serves as a signal source during brake; an angle sensor transmits rotating angle signals of the co-driver brake pedal to a single chip; after collecting information, the single chip transmits driving signals to a motor; and the motor drives a main driver cab brake pedal to rotate at the same angle so that braking of a vehicle is realized. The principle is simple and practical; the device responds timely and quickly; and the safety of students in driving schools when the students learn driving skills is improved. The device only occupies little space of a cab, is convenient to market, is conveniently produced in batches, and is easy to mount and wide in market prospect.

The invention provides an intravenous infusion training system based on a VR platform. The system comprises a control host, a display device, a force feedback device and a foot-operated device. The control host is electrically connected with the display device, the force feedback device and the foot-operated device. The display device is used for displaying a venous blood sample acquisition model. The force feedback device is used for sending a first control signal to the control host according to operation of a user so as to carry out intravenous infusion simulation operation on a venous blood sample acquisition injection arm, and receiving feedback information of the control host to carry out force feedback on the user. The foot-operated device is used for sending a second control signal to the control host according to the operation of the user so as to carry out auxiliary operation on the intravenous infusion simulation operation. According to the invention, the intravenous infusion training system is achieved based on the virtual reality technology, so a problem of failure to carry out repeated trainings on invasive experiments in experiment teaching is solved; problems of poor simulation ability, incapability of resisting repeated puncturing, liquid leakage and mildewing of a current model are solved; and the provided system is an innovative and valuable supplement to current teaching modes.

The invention discloses a room type goaf filling method.Firstly, two adjacent coal pillars in an underground room type goaf are selected, and grooves are formed in the centers of the coal pillars; a series of grooves are formed through the method; grouting grooves are produced through a thick-wall steel plate, the grouting grooves are installed above the grooves of the two adjacent coal pillars so that the grouting grooves can be clamped into the grooves; grouting holes are formed in the centers of the tops of the grouting grooves; expansion slurry is injected into the grouting grooves through a grouting device, after the expansion slurry is solidified and reaches final strength, whether the expansion slurry is connected with a goaf top plate or not is judged, if yes, the procedure ends, and otherwise, secondary injection is conducted till a filling body is connected with the goaf.Transport is convenient, transport difficult is reduced, and raw material cost and transport cost are reduced.The construction technology is greatly simplified and easy to implement.Compared with the existing measure that a coal pillar treatment goaf is reserved, the size of the coal pillars can be reduced to a certain degree, residual coal is reduced, and the coal recovery ratio is increased.

The invention provides a 90-degree reversing mechanism. The 90-degree reversing mechanism is characterized in that the reversing mechanism comprises a first conveying belt and a second conveying belt,the first conveying belt and the second conveying belt are distributed at a 90-degree angle, guide protection plates are mounted on the two sides of the first conveying belt, and an isometric wheel used for pressing materials towards the guide protection plates is arranged on one side of the first conveying belt; a material pushing mechanism is arranged at the bottom of the first conveying belt,and the material pushing mechanism is mainly composed of an air cylinder and a push plate; and a telescopic rod of the air cylinder is mutually perpendicular to the first conveying belt, the telescopic rod of the air cylinder is fixed to the push plate, and the push plate is mutually parallel to the first conveying belt. The 90-degree reversing mechanism is simple in structure and low in cost, theoverall mechanism can be improved from an original assembly line, the part needing to be improved and added is low in cost and small in occupied space, and because the structure is simple and the cost is low, maintenance is convenient as well.

The invention relates to an off-network photovoltaic direct-drive ice storage air conditioning refrigerator system which primarily comprises a photovoltaic power generation mechanism, a refrigeratingmechanism and an ice storage air conditioning refrigerator mechanism. The photovoltaic power generation mechanism comprises a solar panel photovoltaic panel and a compressor controller. The refrigerating mechanism comprises a direct current compressor, a condenser and an evaporating coil, and the direct current compressor, the condenser and the evaporating coil are connected in series successivelyto form a refrigerating loop; the ice storage air conditioning refrigerator mechanism comprises a refrigerating chamber, an ice storage room, a small capacity direct current water pump and a heat exchanger. A soft start function is achieved by using the direct current inverter compressor, so that the system can be also started to operate successfully in a low irradiation condition. By adopting ice storage, fluctuant and periodical changes of solar energy can be solved, and meanwhile, a cooling capacity is provided at night for indoor cooling. The off-network photovoltaic direct-drive ice storage air conditioning refrigerator system does not use electric energy of a power grid, can meet the cold using demand in a remote tropical zone and demands on conservation and storage of food and drugs, and has far-reaching significance to utilization of renewable energy sources more effectively.

The invention discloses a mobile device with a mosquito repelling function. The mobile device is internally equipped with a power circuit and a circuit for operation and communication of a mobile terminal. The mobile terminal is internally equipped with an electronic mosquito repelling circuit which is connected with the power circuit. The power circuit provides working power for the circuit for operation and communication of the mobile terminal and the electronic mosquito repelling circuit. The technical effects are as follows: a commonly-used mobile terminal and an electronic mosquito repelling apparatus are integrated together, so that the mobile device has the functions of an ordinary mobile terminal and a mosquito repelling function; when a user opens the electronic mosquito repelling function of the mobile terminal, a mosquito repelling function can be achieved, and the user is prevented from being bitten by mosquitoes and insects; and the mobile device is convenient to use and carry, occupies a small space, and does not produce chemical substances or chemical odor.

The invention provides a direction change driven slide block mechanism. The mechanism comprises an inclined needle, an inclined core, an inclined guide column, a slide block head with a driving T-shape groove, a main slide block body, a main slide block locking block, a main slide block limiting screw, a main slide block pressing bar and a main slide block driving spring; the molding machine demolding problem of product core side inclined holes is solved; the effects of smoothly realizing inclined hole characteristic molding and pullout demolding are achieved; the problem of reducing the moldstructural strength caused by mold space occupation is solved; the opening / closing control power of a mold template can be effectively used; the horizontal core pulling power is converted to the inclined core pulling power for inclined core pulling of the inclined holes, so that the single grooving of an inclined hole driving mechanism on the mold template is reduced, and the mold overall structural strength is not damaged; and the mechanism is simple in structure, convenient to install and high in reliability.

The invention provides a stone hammer with a telescopic handle. The stone hammer comprises a handle and a hammer head, one end of the handle is fixedly connected with the hammer head, the handle is a telescopic handle and further comprises a hollow socket pipe, an inner handle and a stretching fixing structure, wherein the front end of the inner handle is accommodated in the socket pipe, the rear end of the inner handle is fixedly connected with the hammer head and the inner handle can stretch in the axial direction of the socket pipe; and the stretching fixing structure is arranged at the front end of the inner handle and is used for fixedly maintaining the inner handle in the socket pipe after the inner handle stretches in the axial direction of the socket pipe. Compared with the prior art, the stone hammer provided by the invention has the following advantages: 1, the stone hammer has a small size, occupies a small space, is convenient to transport, use and carry when the handle retracts back; 2, the inner handle is made of rubber and has good shock absorption; and since an elastic steel pipe or steel wire with a thread is arranged at the end of the inner handle in connection with the hammer head, shock and impact on the arm of a user from the handle can be greatly reduced during hammering and the service life of the stone hammer can be prolonged.

The invention relates to a file transmission method and device, computer equipment and a storage medium. The method comprises the steps of obtaining byte data corresponding to the size of a target file; comparing the byte data with a preset threshold value; when the byte data is greater than a preset threshold value, starting double threads to transmit the target file until the residual transmission byte data of the target file is less than or equal to the preset threshold value; when the remaining transmission byte data of the target file is smaller than or equal to the preset threshold value, starting a single thread to transmit the target file; and combining the data transmitted by each thread to obtain data corresponding to the target file. By the adoption of the method, the transmission mode of the target file can be dynamically adjusted according to the size of the target file, an inverted file does not need to be created at a server side for transmission, the tedious operation process and a large amount of time are prevented from being consumed, the file transmission efficiency is effectively improved, and the downloading speed of large files is increased.

The invention provides a method and device for separating coal from gangue in the pit by utilizing an inclined belt conveyor. The coal and the gangue are separated in the pit by utilizing a physical principle. The device mainly comprises two belt conveyors, wherein one belt conveyor is a horizontally-running belt conveyor and is mainly used for conveying the coal and the gangue from a working surface; and the other belt conveyor is an obliquely-running belt conveyor and is mainly used for separating the coal from the gangue. According to the method and device, the coal and the gangue have accelerated speeds in different directions on the inclined belt conveyor by utilizing different friction coefficients among the coal, the gangue and a conveying belt, so that the running directions of the coal and the gangue on the inclined belt conveyor are opposite; and the coal can be thrown out from the upper end of the inclined belt conveyor, and the gangue can be thrown out from the lower end of the inclined belt conveyor. The device for separating the coal from the gangue in the pit has the advantages of convenience in installation, simple structure, safety and reliability in running, small used space and the like; and the gangue can be effectively prevented from being discharged from a well, and the gangue can be directly backfilled into a goaf.

The invention discloses a plate bending treatment device. The plate bending treatment device mainly solves the problem that an existing machine can only bend one plate. The plate bending treatment device comprises an outer machine shell, inner machine plates, a cover plate, a top plate, a conveyor, first grinding rollers, a pressing head, second grinding rollers, third grinding rollers and a sleeve plate mechanism; the outer machine shell is symmetrically arranged; the inner machine plate is fixed to the inner side of the outer machine shell; the cover plate is fixed at the top of the inner machine plate; the two sides of the top plate are fixed to the outer machine shell. the pressing head is arranged below the middle part of the cover plate; the first grinding rollers are arranged between the inner machine plates and are symmetrically arranged front and back; the second grinding rollers are arranged between the inner machine plates; the second grinding rollers are positioned above the first grinding roller; the third grinding rollers are arranged between the inner machine plates and are positioned below the first grinding rollers; and the sleeve plate mechanism is arranged in front of and behind the cover plate. The plate bending machine has the advantages that plate bending diversification is achieved, and the occupied space is reduced.

The invention provides a method and device for separating coal and gangue underground by using a high-speed belt conveyor. The device mainly comprises two belt conveyors, one of the two belt conveyors is a belt conveyor running at normal speed and is mainly used for transporting the coal and the gangue from a working face, and the other one of the two belt conveyors is a belt conveyor running at high speed and mainly aims to accelerate the coal and the gangue. The device for separating the coal and the gangue underground has the advantages of being convenient to install, simple in structure, safe and reliable in operation, small in occupied space and the like; and the gangue can be effectively prevented from going out of a mine, and a goaf can be directly backfilled with the gangue.