76results about How to "Improve vibration" patented technology

The invention relates to a portable efficient vibrating device for an aluminum mold, and belongs to the technical field of concrete vibrating, the portable efficient vibrating device comprises two moving seats, the two moving seats are located on the inner side and the outer side of a mold plate correspondingly, moving wheels are arranged at the bottoms of the moving seats, and the moving wheels are rotationally arranged on the moving seats; the rotating axes of the moving wheels are perpendicular to the bottom of the moving seat and parallel to the bottom of the moving seat, and a driving device used for driving the moving wheels to rotate so as to adjust the position of the moving seat is arranged on the moving seat; a telescopic arm is arranged at the top of the moving seat, the telescopic arm is of a telescopic structure, the telescopic arm is hinged to the top of the moving seat, a mounting plate is hinged to the tail end of the telescopic arm, a plurality of vibrators are arranged at the bottom of the mounting plate, and the vibrators are arranged on the mounting plate in a rectangular array mode; the eccentric end of the vibrator is used for entering concrete. The concrete vibrating device has the effect of conveniently vibrating concrete.

This utility model discloses a tea drying device for easy sieving, comprising: a support frame on which an installation frame is rotatably mounted via a shaft; a platform located inside the installation frame, connected to the frame via an elastic connection, with evenly distributed sieve holes in the center of the platform; an arc-shaped slide rail fixed to one end of a shaft of the installation frame; and a sliding seat located on one side of the arc-shaped slide rail, with rollers rotatably mounted on the outer wall of one side of the sliding seat, the rollers rolling within the arc-shaped slide rail. This utility model, through the structure of the platform and arc-shaped slide rail, allows tea leaves to be placed on the platform for drying. A translation drive mechanism moves the rollers, which in turn presses down on the arc-shaped slide rail, causing it to tilt, thus tilting the platform and allowing the tea leaves to move on it, preventing insufficient drying of the tea leaves at the bottom. During the movement of the tea leaves, the sieve holes remove impurities from the tea leaves.

The present application relates to the field of gas turbine technology, and more particularly to a dynamic balancing method for the misalignment vibration problem of a gas turbine unit shaft system, which comprises the following steps in sequence: step A, implementing a first dynamic balancing weight scheme on a first weight plane of the gas turbine rotor; and step B, implementing a second dynamic balancing weight scheme on a second weight plane of the gas turbine rotor, wherein the weight angle of the second dynamic balancing weight scheme is 180 degrees different from the weight angle of the first dynamic balancing weight scheme. The dynamic balancing method for the misalignment vibration problem of the gas turbine unit shaft system according to the present application selects two weight planes to implement opposite weight, and the generated weight bending moment can balance the additional bending moment, so that the vibration condition of the unit is obviously improved. Different from the traditional influence coefficient method, the dynamic balancing method according to the present application directly attacks the essence of the vibration problem, reduces the number of starting machines and the resulting psychological pressure, saves considerable test cost, and has good application effect and promotional value.

The utility model discloses a kind of rapid pouring mould of assembly integral type two-way dense rib composite floor slab prefabricated concrete bottom plate, including bottom plate, first intermediate plate, second intermediate plate, first side edge plate, second side edge plate and third side edge plate.The pouring mould in the utility model has fast pouring speed, is easy to vibrate, easy to demould, can greatly reduce construction error and construction difficulty, while improving pouring efficiency, realize the promotion of assembly building efficiency.

This application provides an electric toothbrush, including a housing, a mounting bracket, a motor, a display screen, and a first buffer: the housing has a receiving cavity and a window communicating with the receiving cavity; the mounting bracket is disposed within the receiving cavity; the motor is disposed within the receiving cavity and mounted on the mounting bracket; the display screen is mounted on the side of the mounting bracket facing the inner surface of the housing, and the opposite sides of the display screen are respectively positioned opposite the motor and the window; the first buffer is sandwiched between the display screen and the inner surface of the housing to buffer the vibration of the display screen relative to the housing, and / or, sandwiched between the display screen and the mounting bracket to reduce the vibration transmitted from the motor to the display screen through the mounting bracket, thereby protecting the display screen through shock absorption and improving the stability of the display screen on the mounting bracket and the display stability during display.

The embodiment of the invention provides a multi-stage oil-free linear valved compressor which comprises a compressor device, and the compressor device comprises a driving assembly and a stepped compression mechanism. The stepped compression mechanism comprises a compression piston and a cylinder body, the compression piston is provided with protrusions in the first direction to form a stepped shape, and multiple sections of air cylinders which are different in radius and communicate with one another are arranged in the cylinder body in the first direction to form multiple sections of unequal-diameter air cylinder bodies. The compression piston is in clearance fit with the multiple sections of cylinder bodies with different diameters to form at least two compression cavities with different radiuses; and the driving assembly is used for driving the compression piston to do reciprocating motion in the compression cavity in the first direction to achieve multi-stage gas compression. Multi-stage gas compression is achieved through the stepped compression mechanism, the problems of pollution, vibration and low efficiency of a traditional compressor in an oil-free environment are solved, and the oil-free compressor has the advantages of oil-free operation, efficient compression, low vibration and high reliability.

The present application discloses a kind of track leveling equipment for railway track laying construction, it is related to track traffic equipment technical field, the present application includes track and tamping car, further include: two leveling components, leveling component is used to the ballast around the sleeper is leveled and is handled, the leveling component includes fixed plate, and fixed plate bottom sliding installation has push flat plate, push flat plate is installed on ballast take-off mechanism, ballast take-off mechanism is used to the ballast around the sleeper is collected or the ballast of collected discharge according to the moving distance of push flat plate relative to fixed plate.Occupation is in: can be self-adapting leveling before tamping and real-time sensing ballast compactness and height, and utilize the displacement of push flat plate in leveling process automatically stepless regulation tamping vibration intensity, while the displacement of push flat plate can also trigger ballast take-off mechanism, realize the collection of excess ballast or the release filling of collected ballast, greatly improve tamping quality, energy efficiency and track laying precision.

The utility model provides a classified weighing device capable of being used for powder with different particle sizes, and belongs to the technical field of weighing devices. The classifying and weighing device capable of being used for the powder materials with the different particle sizes comprises a main body and a screening mechanism, the main body comprises a working box, a supporting plate is installed in the working box, a pair of long grooves are formed in the supporting plate, discharging pipes are connected into the pair of long grooves, and electromagnetic valves are arranged outside the pair of discharging pipes in a sleeving mode; the screening mechanism comprises a screening box, a feeding opening is formed in the upper end of the screening box, a mounting frame is mounted in the screening box, a transverse plate is mounted at the bottom end of the mounting frame, and a feeding opening is formed in the upper end of the transverse plate. A pair of vertical rods is movably inserted into the transverse plate, a first screening cover is installed between the vertical rods, a second screening cover is installed at the upper end of the first screening cover, and screen plates are installed in the first screening cover and the second screening cover correspondingly.

A method for active vibration control system (AVCS) monitoring and control is disclosed. The method comprises receiving inputs to a protection monitor to monitor one or more force generators, comparing the inputs to one or more values, and shutting down or adjusting the one or more force generators if the one or more force generators are determined to be operating at an undesired condition.

The utility model relates to the technical field of carbon black collection, in particular to a tire carbon black collection device which comprises a collection hopper, an annular tooth groove is formed in the outer side of the top end of the collection hopper, a sliding frame is arranged on the edge of the top end of the collection hopper, and a driving mechanism in transmission fit with the annular tooth groove is installed on the top of the sliding frame. An ash spraying assembly is slidably installed on one side of the top end of the sliding frame, the top end of the ash spraying assembly is connected with an air guide pipe, a reciprocating lifting assembly connected with the top end of the ash spraying assembly is installed on the top of the sliding frame, and the reciprocating lifting assembly is in transmission connection with the driving mechanism. The reciprocating lifting assembly drives the ash spraying assembly to move up and down in a reciprocating mode, so that the interval between the ash spraying assembly and the collecting hopper is intermittently close to or away from each other, and ash spraying airflow does not blow ash to the inner side of the collecting hopper at the same pressure any more; and the bonded carbon black can be promoted to vibrate and be stripped from the inner wall of the collecting hopper by utilizing different soot blowing airflow pressures, so that the cleaning effect is improved.

The utility model relates to the technical field of air showers, in particular to a blockage clearing device for an air return net of an air shower, which comprises a main body, a fan mechanism and a ventilation net are fixedly connected to the top end of the main body, and a door leaf is movably connected to the front side of the main body. The cleaning assembly comprises an outer connecting shell and an inner connecting shell which are arranged in a matched mode, an air exhaust mechanism is arranged in the inner connecting shell, an air return opening is formed in the surface of the inner connecting shell, and the upper end and the lower end of the inner side of the outer connecting shell are fixedly connected with a second mounting base and a first mounting base respectively. The effect of pushing a cleaning plate to slide and adjust in the outer connecting shell is achieved through a push rod, the effect of dredging and cleaning filter holes in the surface of the filter screen assembly is achieved through the cleaning plate and cleaning strips on the surface of the cleaning plate, and the effect of facilitating movable connection of the cleaning plate in the outer connecting shell is achieved through a mounting support; and the effect that the whole filter screen assembly is conveniently driven by the vibration mechanism to vibrate is achieved through the spring rods.

This application belongs to the field of valve technology, specifically relating to a pressure reducing valve and a fuel cell vehicle. The pressure reducing valve includes an inlet connector and a gas outlet; a primary pressure reducing assembly includes a primary pressure reducing valve body and a primary pressure reducing component, the primary pressure reducing component being inserted into the primary pressure reducing valve body. The primary pressure reducing component includes a primary pressure reducing section, with the gas outlet portion of the inlet connector inserted into the primary pressure reducing valve body, and the primary pressure reducing section and the gas outlet being positioned opposite each other. In a first direction, the cross-sectional area of ​​the primary pressure reducing section gradually decreases in a second direction, and the first direction intersects the second direction. This solution, through the primary pressure reducing section, can reduce the noise generated during gas pressure reduction, improving the vehicle's noise, vibration, and acoustic roughness characteristics.

The invention provides a method for treating a brake disc through enhanced ferrite nitrocarburizing oxidation and the brake disc manufactured through the method. The brake disc is subjected to stress relief annealing, multi-stage pre-oxidation treatment, multi-stage nitriding treatment, multi-stage post-oxidation treatment and cooling treatment; and key parameters such as process temperature, atmosphere concentration and treatment duration of each stage are regulated and controlled. According to the brake disc manufactured through the treatment, the abrasion resistance is remarkably improved, the rust resistance and the corrosion resistance are enhanced, and the thickness of the white bright layer is uniform and consistent. The brake disc treated by adopting the method disclosed by the invention smoothly passes a braking particulate matter emission test of the Europe 7 standard, and the dual advantages of the brake disc in the aspects of environmental protection performance and braking performance are proved.

The utility model discloses a primary and secondary separation composite sleeve column-mounted circuit breaker, which comprises a support frame, an upper insulator, a middle insulator and a disconnecting link, a driving mechanism is arranged at the lower end of the support frame, the driving mechanism comprises a fixed frame fixedly connected to the lower end of the support frame, the lower end of the fixed frame is fixedly connected with a mounting plate, and the mounting plate is fixedly connected with the middle insulator. And the front end of the mounting plate is fixedly connected with a metal plate. According to the on-column circuit breaker for primary and secondary separation and combination, the motor drives the rotating disc to rotate, so that the rotating disc swings the hitting ball through the connecting rope, and the hitting ball swings towards the outer side of the rotating disc under the inertia effect, so that the hitting ball is in contact with the metal plate; the purpose that the hitting ball conveniently passes through the friction strip and the metal plate to generate vibration force is achieved, then the metal plate makes a sound, the sound expels birds, and the birds are prevented from nesting on the surfaces of the upper insulator, the middle insulator and the lower insulator.

The invention relates to a structure for improving stress of an exhaust pipe and an upper cover through a partitioned high-pressure cavity. According to the technical scheme, the problem that the stress of the exhaust pipe and the upper cover is too large due to sharp increase of refrigerant flow under the high-rotating-speed working condition of a variable-frequency scroll compressor is solved. The structure comprises an upper partition high-pressure cavity and a lower partition high-pressure cavity which are formed by a heightened upper cover and a partition baffle, and a shunting path controlled by a spring steel reed valve, a refrigerant only flows through a lower area at low rotating speed, and the reed valve is opened at high rotating speed to form a third shunting airflow, so that the vibration stress is effectively reduced, and the energy efficiency is considered.

The application discloses a sealing assembly and a gas turbine, which comprises a front baffle, a high-pressure finger ring, a low-pressure finger ring and a rear baffle connected in sequence from a high-pressure side to a low-pressure side, wherein the low-pressure finger ring is provided with an axial shoe arranged along an inner ring circumference of the low-pressure finger ring, the axial shoe extends in a direction away from the high-pressure finger ring on the low-pressure finger ring shaft, the axial shoe has a sealing surface facing a central axis of the low-pressure finger ring, and the sealing surface is provided with an abradable seal coating. The sealing assembly of the application, wherein the axial shoe on the low-pressure finger ring and the abradable seal coating on the sealing surface thereof can form self-adaptive contact with a rotor surface, thus ensuring the sealing effect and avoiding scratching the rotor; meanwhile, the finger seal structure can realize high-efficiency sealing in a small axial space, thereby shortening the length of the gas turbine rotor, improving the rotor vibration problem, and significantly improving the sealing reliability and the overall operation efficiency of the gas turbine.

The invention relates to the technical field of electric driving systems, and discloses an electric driving system with a hydraulic torque converter and a forklift. The system comprises a driving motor, a hydraulic torque converter, a speed reducer and a vehicle control unit, wherein a lock-up clutch is integrated in the hydraulic torque converter; an output shaft of the driving motor is connected with a pump wheel input side of the hydraulic torque converter; a turbine output side of the hydraulic torque converter is connected with an input shaft of the speed reducer; the output end of the reducer is connected with a vehicle drive axle; when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated, so that the hydraulic torque converter works in the torque conversion working condition, and when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated; and when the vehicle is in a high-speed small-torque demand working condition, the lock-up clutch is controlled to be engaged, so that the pump wheel of the hydraulic torque converter is mechanically locked with the turbine, and the vehicle is in a coupler working condition. The power performance and the energy efficiency of the vehicle are improved, the cost of the electric drive system is reduced, and the economical efficiency and the NVH performance are improved.

The utility model relates to a broadband wireless transmission box adapted to a severe environment, which comprises a shell and a shell cover, thread mounting cylinders are arranged at four corners in the shell, an internal heat dissipation groove is arranged in the shell, a plurality of module mounting screw holes are arranged in the shell, and the shell cover is arranged in the shell. Mounting plates are fixedly connected to the front side face and the rear side face of the shell, mounting holes are formed in the surfaces of the mounting plates, external heat dissipation grooves are formed in the surface of the shell cover, a modular heat dissipation area is arranged in the middle of the shell cover, and threaded holes are formed in the four corners of the shell cover. The broadband wireless transmission box adapting to the severe environment is mainly suitable for long-distance, high-throughput and anti-interference data transmission scenes, modular integration and brand-new shell design are carried out on the internal structure design, the system stability, the heat dissipation capability and the installation convenience are improved through structure optimization, and the broadband wireless transmission box adapting to the severe environment is suitable for popularization and application. And the device is practical.

The invention relates to the field of petroleum machinery, and discloses a tower crane anti-vibration device which comprises a swing arm frame, the swing arm frame is used for being connected with a tower crane, and a center ring is fixedly connected to the middle of the swing arm frame; the balancing weight is used for balancing the whole tower crane, two clamping grooves are formed in one side of the balancing weight, and the balancing weight slides on the outer side wall of the limiting support through the clamping grooves; the front side wall of the bearing back plate is fixedly connected with a bearing bottom plate, and the bearing back plate and the bearing bottom plate are used for placing a balancing weight. Four sets of devices are installed at the bottom of a tower crane, when strong wind comes, balancing weights of the devices move in the opposite direction, so that the shaking degree of a building is reduced, meanwhile, the number of first clamping blocks can be properly increased or decreased according to the load of an oil pumping unit, and the working efficiency is improved. Therefore, the phenomena that a guide wheel is easy to wear, vibration is large, a foundation sinks, a machine body inclines and shakes, a weight box grinds a machine frame, and the whole machine, a beam hanger and a wellhead device shakes violently due to strong wind are reduced.

The application discloses a fabric wrinkle-proof dyeing device, which comprises a dyeing cylinder, a feeding flattening treatment mechanism and a discharging flattening treatment mechanism. The feeding mechanism is provided with a flattening roller and an impurity treatment module. The flattening roller can stretch and shake the fabric by reverse rotation. The impurity treatment module can remove surface impurities by a brush part and an adsorption system. The discharging mechanism is provided with a beating module and a steam system. The steam nozzle can make the fiber expand and stretch, and the beating plate can further remove wrinkles by high-frequency elastic beating. The device is driven by a single motor and has multiple functions through mechanical linkage design. The device can effectively improve the flatness and quality of fabric dyeing, and reduce energy consumption and system complexity.

The application discloses a self-adaptive vibration isolation control method for a phase-separated closed bus, and is characterized in that an equivalent fourteen-degree-of-freedom vibration isolation system dynamic model is established in combination with the internal structure of the phase-separated closed bus and the phase interval installation mode of a magneto-rheological elastomer vibration isolator; after input and output variables of the dynamic model are determined, a fuzzy controller is designed, the input variables are fuzzed, fuzzy rules are formulated, and output variables are obtained after defuzzification; and the quantization factor parameters of the fuzzy controller are determined, the calculated control current is output to the magneto-rheological elastomer vibration isolator, and the stiffness and damping of the vibration isolator are changed. The self-adaptive vibration isolation control method can fully exert the mechanical characteristics of variable stiffness and variable damping of the magneto-rheological elastomer vibration isolator, efficiently suppress the vibration generated under normal working and short-circuit current conditions of the phase-separated closed bus, and has important practical significance for ensuring the safety of equipment and the stability of a power system.

The application is a linkage device of automatic film packaging machine, which comprises a mounting base, a weighing mechanism, a lifting mechanism, a lifting and lowering mechanism and a feeding mechanism; the weighing mechanism comprises a weighing platform; the lifting mechanism comprises a lifting driver, a setting frame and a lifting bracket capable of being driven by the lifting driver to lift and lower relative to the setting frame and lift the material from the weighing platform; the lifting and lowering mechanism comprises a lifting and lowering driver and a lifting and lowering seat; the feeding mechanism comprises a feeding driver, a transverse shaft and a feeding frame capable of receiving the material from the lifting bracket and conveying to the lifting and lowering seat along the transverse shaft; the weighing mechanism, the setting frame of the lifting mechanism, the lifting and lowering mechanism and the transverse shaft of the feeding mechanism are fixed on the mounting base at intervals, and the weighing platform, the lifting bracket and the bearing of the feeding frame are matched with each other; each mechanism can be installed independently without affecting each other, and the driver of each mechanism does not need to bear the load of other mechanisms, thereby reducing the load of single driver.

The utility model relates to the technical field of rice processing, and discloses a winnowing separation device for rice processing, which solves the problem that the screening effect of rice is poorer due to a simple winnowing mechanism at present, and comprises a winnowing box, and the top of the winnowing box is fixedly connected with a feed hopper; an inclined plate located below the feeding hopper is fixedly connected into the winnowing box, an inner plate located below the inclined plate is fixedly installed in the winnowing box, an impurity discharging opening and a discharging opening are symmetrically formed between the inner plate and the winnowing box, a separating mechanism is arranged on the winnowing box, and a cleaning mechanism is arranged on the separating mechanism. The separating mechanism comprises a movable frame movably mounted in the discharging opening, and a mounting frame is arranged in the movable frame; according to the rice screening device, through cooperation of the conveying belt, the driven shaft, the eccentric block, the sleeve plate, the U-shaped round rod, the movable frame, the lifting plate, the L-shaped round rod and the first spring, the screen can vibrate conveniently and is prevented from being blocked, and therefore the rice screening effect can be improved conveniently.

The application discloses a rail corrugation suppression device and a mounting method, and belongs to the technical field of rail transit. The rail corrugation suppression device comprises a suppression mechanism, the suppression mechanism is symmetrically arranged on both sides of the rail waist of a rail, the bottom of the rail is provided with a fixing mechanism for fixing the suppression mechanism on the rail, an energy consumption box is arranged on the fixing mechanism, and the energy consumption box is located directly below the rail. The suppression mechanism comprises a plurality of box bodies arranged in a linear array, a plurality of first suppression layers and second suppression layers are arranged in the box bodies, and the first suppression layers and the second suppression layers are arranged at intervals. The rail corrugation suppression device and the mounting method can solve the problem that the existing rail corrugation suppression device has poor damping effect on rail vibration and noise.

The invention relates to a water vapor-organic working medium combined cycle power generation system which comprises a water vapor Rankine cycle and an organic working medium Rankine cycle, saturated steam generated by a boiler forms superheated steam through a superheater and drags a steam turbine generator to generate power, steam exhausted by a steam turbine is condensed in a condenser, and formed condensed water returns to the boiler through a water feeding pump and an economizer. A liquid organic working medium passes through an organic working medium booster pump, an organic working medium heater and a condenser to form organic working medium superheated steam, an organic working medium gas turbine generator set is dragged to generate electricity, and exhaust gas of an organic working medium gas turbine is cooled through the condenser to form the liquid organic working medium. And high-temperature flue gas generated in the fuel combustion or industrial production process is discharged after being cooled by the boiler body, the superheater, the economizer and the organic working medium heater, or is discharged from a chimney through purification equipment and an induced draft fan.

The application discloses a low-vibration external roller step chain, which comprises a plurality of rollers and a plurality of damping mechanisms. A roller is fixed at the connection position of every several chain links, and the roller is fixed outside the chain plate and close to the guide rail side of the ladder. A damping mechanism is arranged between every two rollers, and the damping mechanism is fixed on the middle chain link between the two rollers. The middle chain link refers to the chain link close to the middle of the plurality of chain links between the two rollers, and the fixing position of the damping mechanism is on the same side of the roller. When the passenger conveying device operates, the damping mechanism is in contact with and slides along the guide rail of the ladder of the passenger conveying device, and the gravity of the step chain can be supported by the damping mechanism through the guide rail of the ladder. Compared with the prior art, the damping mechanism is added, the downward overhanging distance of the step chain between unit steps is improved, and the damping mechanism also helps to improve the vibration and noise of the step chain during operation.

The application discloses an elastic coupling parameter determination method, an elastic coupling optimization method and electronic equipment. The elastic coupling parameter determination method comprises the following steps: obtaining a target attenuation amount of an elastic coupling applied to a steering column of a vehicle to be tested; obtaining an attenuation amount and static stiffness relationship; and determining a static stiffness corresponding to the target attenuation amount as a target static stiffness of the elastic coupling according to the attenuation amount and static stiffness relationship. The application can efficiently and accurately match the elastic coupling of the steering column, avoid multiple part replacement tests, improve efficiency and save sample part resources. The elastic coupling target static stiffness obtained by the elastic coupling parameter determination method of the application can meet the target attenuation amount, reduce the gear meshing noise of the steering machine itself and the energy transmitted to the steering wheel via the column under the excitation of the road surface, improve the steering wheel vibration and noise, and improve the driving comfort.

A six-groove six-pole single-phase motor for an axial flow exhaust fan relates to the technical field of motors, a six-groove iron core is arranged on the inner side of a six-pole magnetic ring, an insulating lower wire frame and an insulating upper wire frame are respectively and fixedly inserted on the front side and the rear side of the six-groove iron core, and the insulating upper wire frame is rotatably sleeved on a motor shaft through a bearing. A graphite gasket sleeves the position, located on the rear side of the insulating upper wire frame, of the motor shaft, the bearing support rotationally sleeves the motor shaft through a bearing, three supporting columns are fixedly arranged on the front side of the insulating lower wire frame, and a circuit board is fixedly arranged on the three supporting columns; a first clamping ring and a second clamping ring are clamped in a front clamping groove and a rear clamping groove formed in a motor shaft respectively, a machine shell abuts against the rear side of a bearing support, and three internal threaded columns are fixedly arranged on the rear side wall of the bearing support, so that the loading performance of the axial flow fan can be improved, vibration and noise of the motor can be improved, and the service life of the motor is prolonged. And meanwhile, the motor can be conveniently disassembled and assembled, and the convenience of motor maintenance is improved.

The utility model discloses a kind of mine microseismic monitoring instruments of adaptive environmental regulation placement position, the utility model relates to mine monitoring technical field, the alarm part includes alarm device, signal receiving chip and signal transmission chip are arranged in the alarm device, the signal receiving chip is electrically connected with signal transmission chip.This mine microseismic monitoring instrument of adaptive environmental regulation placement position is provided with alarm part, signal receiving chip and signal transmission chip are arranged in alarm part, when signal receiving chip in one of alarm part receives vibration signal, information is transmitted to signal transmission chip, signal transmission chip sends signal, after the signal sent by signal transmission chip is received by adjacent alarm part, signal can continue to be sent to adjacent alarm part, by layer by layer transmission, until signal is sent to ground, so that signal is transmitted to ground more stable, signal cannot be transmitted to ground without appearing situation.

The utility model relates to the technical field of coal sample collecting and sorting, and discloses a coal sample collecting and sorting device which comprises a sorting box, a sorting mechanism is arranged in the sorting box and comprises two screening nets, and the two screening nets are symmetrically, fixedly and movably connected in the sorting box in a sleeved mode. Two limiting through grooves are formed in the front face of the sorting box, a limiting strip is fixedly connected to the front face of the screening net, the outer wall of the limiting strip is movably connected into the limiting through grooves in a sleeved mode, a handle is fixedly connected to the front face of the limiting strip, and first bolts are connected to the two sides of the front face of the limiting strip in a threaded mode. By adopting the matching of the screening net, the limiting strip, the handle, the first bolt, the positioning block, the positioning groove and the limiting through groove, the screening net is convenient to disassemble and assemble, so that the screening nets with different pore diameters can be replaced according to the granularity of a coal sample required to be collected in production, and the coal in different granularity intervals can be conveniently sampled and collected.