173results about How to "Act as an alarm" patented technology

A wallet with antitheft and positioning functions comprises a wallet body, a power supply, a fingerprint lock, an anti-cut module, a body anti-lost module, a Bluetooth module and a positioning module, and the power supply is arranged in the wallet body, and powers up the fingerprint lock, the anti-cut module, the body anti-lost module, the Bluetooth module and the positioning module; the fingerprint lock comprises, sequentially connected, an ARM processor, a CMOS fingerprint sensor, a relay and a buzzer; and the anti-cut module comprises traverse networks uniformly distributed on the wallet body, and an alarm connected with the traverse networks, and the alarm emits alarm when the traverse networks are in a broken state. The fingerprint lock designed in the invention can be used as an antitheft lock, and can be unlocked only by a wallet master in order to realize an antitheft purpose; and the anti-cut module prevents the sheath of the wallet from being cut by a sharp edge in order to realize a wallet protection purpose.

The invention discloses an improved support vector machine-LIBS (laser-induced breakdown spectroscopy) combined sorting method for steel materials. The method comprises the steps of detecting a series of rolled steel samples with known marks with an LIBS system to obtain data matrixes of the rolled steel with different marks, and utilizing a support vector machine to establish a sorting model on the known category data, wherein in the modeling process, an improved modeling method, namely combined modeling is used; after data of the sample to be measured is input to the model, performing fuzzy classification with a one-to-many method, screening candidate categories, and performing sophisticated classification by a one-to-one method, and finally determining the category of the data to be measured. According to the method, the one-to-many and one-to-one modeling methods are combined for use, and advantages of the methods are fully utilized, so the data to be measured can be subjected to two layers of analyzing systems of the fuzzy classification and the sophisticated classification, the influence of useless category information on a prediction process is reduced, the prediction accurate rate can be obviously improved and the calculating cost is reduced.

The invention discloses an electric meter box device with the functions of preventing electricity stealing and carrying out monitoring. The electric meter box device comprises a reed tube, a power source, an alarm, a release switch and a time-delay relay. The power source, the alarm and the reed tube form a magnetic field alarm circuit. The time-delay relay, the release switch and the power source form a trigger alarm circuit. A mobile phone with the one-key get-through function is arranged below the time-delay relay. A camera module is arranged in a box body and used for collecting audio-video data and sending the audio-video data to an audio-video decoder, then compressed encoding processing is conducted on the audio-video data, and the audio-video data after the compressed encoding processing is conducted are sent to an M2M module and then are uploaded to a management platform through the M2M module. After the electric meter box device is used, not only is the good effect of preventing electricity stealing achieved, but also criminal offenders are arrested lawfully and unwittingly, arrogance of the criminal offenders is greatly struck, and behaviors of stealing electricity and damaging an electric meter box are eliminated.

The invention discloses a Bluetooth earphone which includes a headphone, a microphone, a battery power supply module, an antenna, a Bluetooth module and an analog switch; the antenna is connected with the Bluetooth module; the analog switch is a monopole double throw switch; the first output end of the Bluetooth module is connected with the input signal end IN of the analog switch; the second output end of the Bluetooth module is connected with the output signal selection COM end of the analog switch; the first control end NO and the second control end NC of the analog switch are respectively connected with the headphone; one output end of the battery power supply module is connected with the power supply end V+ of the analog switch; the other output end is connected with the power supply end of the Bluetooth module. The Bluetooth earphone can give an alarm and has the alarming effect when the mobile phone of the user is disconnected with the Bluetooth earphone.

The invention provides an integrated control system and device for drilling operation procedures. A first industrial machine, a second industrial machine, a third industrial machine and a fourth industrial machine are connected with a main driller CPU and an assistant driller CPU through a NET network respectively, the main driller CPU and the assistant driller CPU are connected with each other through a linked network coupler, the main driller CPU is connected with a first main driller network coupler, a second main driller network coupler, a third main driller network coupler, a fourth main driller network coupler, a valve terminal remote station, a host controller, a top drive controller, an instrument controller and an automatic driller feeding controller through a BUS1, and the assistant driller CPU is connected with a catwalk controller, a tube tank controller and an iron roughneck controller through a BUS2, a first assistant driller network coupler, a second assistant driller network coupler and a third assistant driller network coupler. According to the system and device, the mode that main driller mode selecting is taken as the principal thing, and an assistant driller is operated in a slaved mode is adopted by the system, and therefore linkage and interlocking between a main driller and the assistant driller are improved; the sequential operation steps are regulated by the device, therefore, misoperation is reduced, and the equipment safety is improved.

The invention discloses a high-altitude lithium battery protection device which comprises a lithium battery box, a gas pressure pump and a gas pressure sensor; the lithium battery box adopts an airtight box; the gas pressure pump is arranged outside the lithium battery box and is communicated with the inside of the lithium battery box; the gas pressure sensor is arranged inside the lithium battery box. The high-altitude lithium battery protection device disclosed by the invention has the benefits that through arranging the gas pressure pump, a gas pressure detector and the airtight box, the stability of gas pressure in the working environment of a lithium battery is ensured, so that the short circuit caused by the damage of the lithium battery due to a reduction in the ambient gas pressure can be avoided, therefore, the use safety of the lithium battery in a high-attitude area is improved.

The invention discloses a smart robot for warehouse safety protection. The smart robot comprises a smart robot including a central processor, of which the input end is electrically connected with a power supply module and a control module, and the output end is electrically connected with an alarm module. The smart robot is provided with the central processor, the power supply module, the controlmodule, the alarm module, a data storage module, an A / D converter a feedback module, a voice input module, a camera, a smoke sensor, a temperature sensor, a humidity sensor, a human body induction module, an infrared obstacle avoidance sensor and a communication module, which are used in cooperation with remote monitoring terminals. The problem that an existing smart robot for a warehouse is poorin safety protection effect is solved. The smart robot has the advantages of being good in safety protection effect and convenient in use, and the practicability of the smart robot for the warehouse is improved.

The invention discloses a control system for an autogenous mill. A back rotation speed sensor is installed on a transmission shaft. A motor is a variable frequency motor. A motor controller is installed on the motor. A torque measuring instrument is installed on an output shaft of the motor. A weight measuring device is installed on a first bracket and a second bracket. A temperature sensor is arranged on a sliding bearing body. The rotation speed sensor, the torque measuring instrument, the weight measuring device and the temperature sensor are connected with an MCU. A displayer, an alarm and a memory are connected to the MCU. The provided control system for the superfine autogenous mill can automatically judge whether charging is appropriate or not, automatically adjust the charging speed and avoid the swelling phenomenon, is provided with a monitoring device and has alarming and self-protection functions.

The invention discloses a new energy charging pile with anti-collision function, comprising a box body, wherein the top of the front side of the box body is fixedly connected with a display, the top of both sides of the box body is fixedly connected with a charging wire, and a buzzer is arranged on the right side of the top side of the box body. The invention achieves the advantages of collision prevention by arranging a buzzer, a first buffer plate, a first slide plate, a first spring, a first inflatable air bag, a first infrared sensor, a second buffer plate, a second slide plate, a second spring, a second inflatable air bag, a second infrared sensor, a first slide groove, a first slide block, a second slide groove and a second slide block to cooperate with each other, solving the problem that the existing new energy charging pile does not have the function of anti-collision and is easy to cause the damage of the new energy charging pile and preventing the damage of the new energy charging pile when the new energy vehicle collides with the new energy charging pile, and prolonging the service life of the new energy charging pile.

The invention discloses a multifunctional humidifier. The multifunctional humidifier comprises a base, a water tank and a humidity sensor, wherein the base is connected with the water tank; a heater is arranged in the base; a water inlet pipe is arranged on the top end of the water tank; the water tank is that a water filtering device is arranged on the inner wall, a level monitoring device is arranged inside, a fog outlet pipe is arranged in the center of the top end, and a water electrolyzing device is arranged at one side of the water tank; the humidity sensor is connected with the fog outlet pipe. According to the multifunctional humidifier, water can be added to the water tank through the water inlet pipe, so that the labor force is saved; the water is purified and filtered through the water filtering device, and thus the shortage of scale deposit on the tank wall due to long-time use of an electric heating type humidifier is overcome; the level monitoring device can monitor the level and alarm for abnormality; the water electrolyzing device can release oxygen while electrolyzing water, the oxygen is released to the room through the fog outlet pipe, and therefore, the indoor air quality is improved, and the air humidity can be sensed well by the humidity sensor.

The invention provides an auxiliary monitoring device used for rehabilitation training after fracture surgery. The auxiliary monitoring device comprises a cloud server, a data acquisition device, a doctor receiving terminal and a patient receiving terminal. The data acquiring device is provided with a swing acquisition device for acquiring a swinging speed and a stress acquisition device for acquiring stress, the swing acquisition device is connected with the stress acquisition device in a communication manner and connected with the cloud server in a data transmission manner. The cloud server is in double-way connection with the doctor receiving terminal and in one-way connection with the patient receiving terminal. The swing acquisition device further comprises a belt and a plastic shell, two ends of the belt are detachably connected, and the plastic shell is detachably mounted on the belt. The auxiliary monitoring device is capable of monitoring rehabilitation training of arms and lower limbs, is diverse in monitoring functions, is capable of playing a role in alarming nonstandard training of a patient during monitoring, and thereby being capable of enhancing a rehabilitation effect of the patient. The patient only needs to wear the auxiliary monitoring device on the wrist or put it in a shoe cavity during use, and accordingly the auxiliary monitoring device is simple, easy and convenient to use, simple in structure, small in size and easy to carry.

The invention discloses a hydraulic tensioner, and belongs to the field of tensioners. The hydraulic tensioner comprises a pedestal, an oil cylinder, pistons, a pull rod and end covers, wherein the pedestal is located at the lower part of the oil cylinder; the pull rod is arranged in the oil cylinder; the pistons matched with the oil cylinder and the pull rod are arranged in the radial directions of the oil cylinder and the pull rod; screw sleeves are arranged at the tops of the pistons; the end covers are fixed on the upper surface of the oil cylinder; springs are uniformly arranged between the end covers and the screw sleeves; the hydraulic tensioner further comprises a pump station and an oil tank; the pump station and the oil tank are both located at the bottom of the oil cylinder; the oil tank communicates with the oil cylinder through the pump station; a pressing rod, a high pressure overflow valve and an unloading valve are arranged on the pump station; the hydraulic tensioner further comprises a gear box; the gear box is located on the side surface of the pedestal and is in contact with a pre-tightening nut in the pedestal; the hydraulic tensioner further comprises alarm switches and ejector pins; the alarm switches are located in the end covers; the ejector pins are connected with the screw sleeves and are located below the end covers; and the ejector pins and the alarm switches are located on the same straight line. Aiming at the problem that the conventional tensioner is easy to damage due to an overtravel in the prior art, the hydraulic tensioner can realize overtravel reminding, so as to protect the tensioner from being damaged by the overtravel.

The invention discloses a technique for sustainable aquaculture of litopenaeus vannamei and penaeus monodon in ecological ponds. The area of each shrimp pond is not fixed and is generally 20 mu, in regard to each pond, the pond bottom is sandy mud or silty, the water quality is better, the pollution is less, planktons are rich, the proportion of seawater is about 1.024, the pH value is about 8.0,each shrimp pond has the water depth of 2 meters and is provided with a water inlet and a water outlet which are independent, and the water inlets and the water outlets are preferably separated independently, so that the irrigation and drainage requirements of shrimp aquaculture are met, and automatic irrigation and drainage cannot be carried out in a neap season. According to the technique for sustainable aquaculture of litopenaeus vannamei and penaeus monodon in the ecological ponds, solar exposure for pond bottoms and the comprehensive pond disinfection enable germs and bacteria in the shrimp ponds are eradicated, and harm during aquaculture of litopenaeus vannamei and penaeus monodon is avoided; regular water quality detection enables data in a water body convenient to control, accordingly the prevention effect is achieved, diseases during shrimp aquaculture are minimized, litopenaeus vannamei aquaculture in summer is avoided, and the disease frequency during aquaculture is minimized.

The invention discloses a charging pile face recognition intelligent device that comprises a charging pile body; a camera and a touch display screen are arranged at the top of the front surface of thecharging pile body, and a controller, an alarm module, a face image recognition module, a face image detection module, a database, a storage module, a face image extraction module and a face image acquisition module are arranged in an inner cavity of the charging pile body; the output end of the controller is electrically connected with the touch display screen and the alarm module in a one-way mode. According to the invention, the charging pile body, the camera, the touch display screen, the controller, the alarm module, the human face image recognition module, the face image detection module, the database, the storage module, the face image extraction module, the face image acquisition module and the power supply module are used cooperatively; the problem that an existing charging pileis not provided with a face recognition intelligent device is solved, and the charging pile has the advantages of the face recognition intelligent device and is worthy of popularization.

The invention discloses a movement preventing safety box capable of preventing for security and protection. The safety box comprises a cabinet body, a cabinet door, a fixing base and a mounting plate;multiple annular steel balls are arranged between a supporting plate and the mounting plate; vertical pressing plates are fixed on the lower surface of the fixing base, the pressing plates extends into clamping grooves, springs are fixed at the lower ends of the pressing plates, pressing blocks are fixed at the lower ends of the springs, and pressure sensors are embedded into the bottom parts ofthe clamping grooves; a mechanical lock and a fingerprint lock are installed on the cabinet door; a human body infrared sensor and a camera are installed on the front side of the cabinet door; and theside walls, corresponding to the upper parts of partition plates, of the cabinet body are fixedly provided with drying boxes. According to the safety box, the pressing blocks are tightly pressed on the pressure sensors, so that when a person moves the cabinet body, the pressure plates is pulled out of the clamping grooves, the pressure sensors detect that the pressure is reduced, then a signal can be sent out conveniently, the alarm is enabled to give an alarm effect, and therefore the threat to the safe box caused by violent crimes is avoided.

The invention provides a cam rotor pump for conveying a high-viscosity medium. The cam rotor pump comprises a pump body, wherein a safety valve is arranged at the front end of the pump body; the rear end of the pump body is fixedly connected with a gear box; a driving shaft and a driven shaft are arranged in the pump body and the gear box in the parallel manner; rotors and synchronous gears are respectively arranged on the driving shaft and the driven shaft; the two rotors are perpendicularly arranged at the leftmost ends of two pump shafts through keys; the two synchronous gears are meshed with each other; the driving shaft and the driven shaft are sealed with the pump body through mechanical seals; a first bearing and a second bearing are respectively arranged between the driving shaft and the gear box as well as the driven shaft and the gear box and are symmetric with each other; T-shaped slots are formed in the arc sides in fan-shaped blades of the rotors; a back-cooling flushing opening is formed in the upper end of the pump body, and an oil outlet is formed in the front side of the pump body; movable ring seats are arranged between the mechanical seals and the rotors. The mechanical seals of the cam rotor pump are convenient to assemble and disassemble; furthermore, even if the mechanical seals leak liquid, the bearing mediums cannot be polluted; the cam rotor pump is convenient to maintain, and the service lives of the mechanical seals are prolonged.

The invention relates to an immersible waterproof type electronic sphygmomanometer comprising a wrist strap type air bag and a waterproof sealing shell, wherein the waterproof sealing shell is internally provided with a first air pump, a second air pump, a first one-way electromagnetic valve, a second one-way electromagnetic valve, a rigid air cylinder, a pressure sensor and a microprocessor MCU (Microprogrammed Control Unit), wherein the rigid air cylinder is provided with a first air nozzle and a second air nozzle; the first air nozzle, the first air pump, the first one-way electromagnetic valve and the wrist strap type air bag are sequentially connected; the second air nozzle, the second air pump, the second one-way electromagnetic valve and the wrist strap type air bag are sequentially connected; the wrist strap type air bag is connected with the microprocessor MCU through the pressure sensor; and the first air pump, the second air pump, the first one-way electromagnetic valve and the second one-way electromagnetic valve are respectively connected with the microprocessor MCU. The invention provides an air source for the wrist strap type air bag of the electronic sphygmomanometer by utilizing the rigid air cylinder inside the waterproof sealing shell, thereby solving the problem of the air source inflating a wrist strap during underwater measurement and realizing the underwater monitoring of blood pressure; and in addition, the invention has the advantages of simple structure, low cost and convenient use.

The invention discloses an improved automobile steering wheel lock which comprises a lock body and a lock catch, wherein a stop part extending outward, a lock head and a front cap matched with an outer ring of the steering wheel are arranged on the lock body; a lock rod, an outer cover wrapping the lock rod and a rear cap matched with the outer ring of the steering wheel are arranged on the lock catch; the lock rod of the lock catch is inserted into a lock hole of the lock body along the direction of the stop part and is in sliding fitting with the lock body, and meanwhile, the outer cover is covered on the lock body and is in sliding fitting with the lock body; a rachet which is matched with an elastic lock bolt controlled by the lock head in the lock body is arranged on the lock rod of the lock catch; and the front cap and the rear cap can be correspondingly engaged. The lock with the structure has the advantages of reasonable structure, convenience for use, wide adaptability and good burglary alarm property.

The invention discloses a control method for an autogenous mill. A back rotation speed sensor is installed on a transmission shaft. A motor is a variable frequency motor. A motor controller is installed on the motor. A torque measuring instrument is installed on an output shaft of the motor. A weight measuring device is installed on a first bracket and a second bracket. A temperature sensor is arranged on a sliding bearing body. The rotation speed sensor, the torque measuring instrument, the weight measuring device and the temperature sensor are connected with an MCU. A displayer, an alarm and a memory are connected to the MCU. The provided control method for the superfine autogenous mill can automatically judge whether charging is appropriate or not, automatically adjust the charging speed and avoid the swelling phenomenon, is provided with a monitoring device and has alarming and self-protection functions.

The invention discloses an intelligent security monitoring management device and a management method. The device comprises a central processing unit, wherein the central processing unit is in bidirectional electrical connection with a temperature sensor. Through the cooperative use of the central processing unit, the temperature sensor, a humidity sensor, a smoke sensor, an access control module,an intelligent ball machine, a storage module I, an ultraviolet sterilization module, a lighting module, an air purifier, a refrigeration module, a humidification module, a heating module, a fire extinguishing module, a ventilation module, a sound control lighting lamp, a touch screen controller, a communication module, a monitoring terminal, a power module I, an alarm module, a flash lamp, a buzzer, a power module II, a fingerprint acquisition module, a fingerprint identification module, a fingerprint comparison module, a microprocessor, an ID card identification module, a storage module II,a fire extinguisher, a fan, a spray nozzle and an electromagnetic valve, the device solves a problem that the security monitoring effect is poor due to the fact that an existing security monitoring management mode for a warehouse is mainly a manual on-duty monitoring mode.

The invention relates to a wireless router, in particular to a wireless router with voice alarm function for internet. The technical problem to be solved in the invention is to provide a wireless router with voice alarm function for internet, and the wireless router is simple in operation, low in cost and timely in alarm. In order to solve the technical problem, the invention provides the wireless router with voice alarm function for internet, comprising a voice alarm device, a lifting rod, a guide plate, a contact roll wheel, a right bracket, an electric wheel, a first pulling rope, a first slide block, a first spring, a first slide rail and so on; the left side of the top part in the left bracket is welded with a second supporting rod, and the lower end of the second supporting rod is connected with a bearing base through the bolt connection. The wireless router with voice alarm function for internet has the beneficial effects of being simple in operation, low in cost and timely in alarm.

The invention discloses a light-emitting logo assembly for an automobile. The light-emitting logo assembly comprises a logo cover plate, a logo body, a backlight module, a wiring harness and an air bag cover plate. A logo mounting groove is formed in the surface of the airbag cover plate; the backlight module is arranged in the logo mounting groove of the airbag cover plate; the logo body is arranged in the logo mounting groove of the airbag cover plate and is positioned on the surface of the backlight module; the logo cover plate is pressed in the logo installation groove of the air bag coverplate and tightly presses the logo body and the backlight module, one end of the wire harness is connected with the backlight module, and the other end of the wire harness penetrates through the logoinstallation groove of the air bag cover plate and then is connected with an automobile control system. The logo cover plate is used for pressing the logo body and the backlight module into the logoinstallation groove formed in the air bag cover plate, and the light-emitting logo assembly is prevented from being disengaged or broken when the air bag is ignited and exploded.

The invention discloses a capacitor with explosion-proof and fire-extinguishing functions, and belongs to the technical field of capacitors. According to the capacitor with the explosion-proof and fire-extinguishing functions, fragments can be prevented from splashing when the capacitor explodes through a first framework, a second framework and an explosion-proof film, so that other parts are protected; open fire generated by explosion is utilized to melt a first wax block so as to spray out sand and ammonium phosphate salt, so that the fire extinguishing effect on open fire generated by explosion can be achieved in time, and fire spreading is avoided so as to reduce loss to the minimum; and under the action of a second elastic film, a puncture knocks a storage ball, then the storage ball is broken, saltpeter in the storage ball falls off and falls into cold water in a water storage tank, the saltpeter can absorb a large amount of heat when dissolved in water, and heat on the surfaces of the capacitor fragments can be absorbed through a reinforcing plate, so that the timely cooling function is achieved, and workers can conveniently recycle and clean the capacitor fragments.

The invention discloses a high-voltage-protection type anti-theft power measuring box. The measuring box is placed in a protection box body, and a protection box has a certain protection effect on the measuring box; the side of the protection box is provided with an air outlet hole, so that emission of heat in the measuring box is facilitated; a baffle can prevent rain water or dust from entering the protection box through the air outlet hole; when a box door is closed, the box door extrudes an elastic switch to be closed, an alarm cannot ring, when the box door is opened, the elastic switch is reset, the alarm rings, and therefore the measuring box has the electricity stealing preventing function; V / V wiring is adopted by two voltage transformers, primary taps of the voltage transformers are connected to an A phase, a B phase and a C phase through fuse pipes, and the two voltage transformers can be prevented from being burned up due to overload through the high-voltage fuse pipes configured on the voltage transformers; it is guaranteed that power is continuously supplied through a configured special power transformer, and therefore the phenomenon that a circuit breaker cannot trip due to the fact that any one phase of the A phase, the B phase and the C phase is failed can be prevented.

The invention discloses multifunctional moxibustion equipment which comprises a controller, a leg moxibustion sleeve, a shoulder moxibustion sleeve and a foot moxibustion sleeve. A filter is arranged on the controller, the leg moxibustion sleeve, the shoulder moxibustion sleeve and the foot moxibustion sleeve are connected with the filter by hoses, each of the leg moxibustion sleeve and the foot moxibustion sleeve comprises two symmetrical portions, each two corresponding portions are connected with each other by buckles which are arranged on the two portions, a plurality of holes are formed in certain positions of the moxibustion sleeves, the certain positions of the moxibustion sleeves correspond to the acupuncture points of a human body, moxa sticks can be inserted into the holes, a circle of sponges is arranged on the periphery of the inner side of each opening of each of the leg moxibustion sleeve, the foot moxibustion sleeve and the shoulder moxibustion sleeve, a fan is further arranged on the controller, a temperature display screen, indicator lamps and buttons are further arranged on the upper portion of the controller, the fan can be switched on and off under the control of the buttons, and the rotational speed of the fan can be controlled by the buttons. The multifunctional moxibustion equipment has the advantages that the skins of the human body can be prevented from being scalded by the multifunctional moxibustion equipment, smoke generated in moxibustion procedures can be eliminated, the multifunctional moxibustion equipment can be automatically controlled and is easy and convenient to operate, and the multiple acupuncture points of various positions of the human body can be simultaneously treated.

The invention belongs to the field of electric power grids, and particularly relates to a vectorized power grid fine early warning system of Doppler radar meteorology. The system comprises a Doppler radar unit, an early warning center unit, and a power terminal unit. The power terminal comprises a sensor group, and the sensor group is provided with a plurality of meteorology sensors. A GIS (Geographic Information System) server generates a meteorology early warning information according to the radar information of the Doppler radar unit, and controls the working state of the sensor group on aterminal machine according to the early warning information. According to the vectorized power grid fine early warning system of the Doppler radar meteorology, a mode of arranging the sensors on a power equipment is further adopted after associating the radar information with the power equipment, so that the accuracy of the early warning results is further improved; the radar early warning level is combined with the geological level, so that the influence of the meteorology on the geological disaster is more refined; and a double-working mode is adopted in the GIS system, so that the burden ofthe GIS system is reduced, and the collection speed is improved.

The invention discloses an anti-theft bag, which comprises a bag body and an alarm circuit which is arranged in the bag body, the alarm circuit comprises a power supply, a switch, a regulating resistor and an RC oscillation circuit, and the RC oscillation circuit is a closed circuit which is composed of a resistor, a capacitor, a loudspeaker and a metal lock resistor that are connected in series. The anti-theft bag has advantages of simple structure and convenient use, the alarming aim is achieved by the alarm circuit which is arranged in the bag body, the loudspeaker can be controlled by capacitor charging and discharging to give out alarm sound at the right time, thus preventing a thief from stealing things in the bag and avoiding property loss effectively.

The invention relates to a safety device of a transmission shaft of a concrete mixer truck, which comprises a protective plate and a U-shaped component, wherein the openings of the U-shaped component are upward. The protective plate extends along a horizontal direction and is connected with a pump bracket; two opening ends of the U-shaped component are arranged at the bottom of the protective plate respectively; and the transmission shaft passes through the middle part of the U-shaped component. When either end of the transmission shaft breaks, the U-shaped component limits the rotation of the transmission shaft in a U-shaped space of the U-shaped component. Therefore, the transmission shaft does not fall off from the U-shaped component so as to break other parts such as a chassis. The safety device effectively prevents damages to the other parts of the concrete mixer truck, such as the chassis, which are caused by the rupture of the transmission shaft.

The invention discloses an automatic assembling screw device. The automatic assembling screw device comprises a equipment rack, wherein adjustable supporting legs are movably installed at the lower end of the equipment rack, adjusting screws are movably installed between the adjustable supporting legs and the equipment rack, a power switch is movably installed on the left side of the lower end ofthe equipment rack, a vibrating material falling plate is fixedly installed at the upper end of an installing base, and an assembling table is fixedly installed at the lower end of the vibrating material falling plate. According to the automatic assembling screw device, large vibrating plates which are symmetrically arranged are used as vibration feeding plates to supply screw parts, so that the screw parts inside the vibration feeding plates are kept in a sufficient state; material discharging is detected through a photoelectric sensor, operators worker is reminded that the equipment occurs abnormity, so that the workload of the operators can be reduced; an electrical signal loop is formed by two electrodes and the screws, so that an alarm effect can be achieved in the discharging processof the screws, moreover, a discharging guide rail is bent, only one screw can pass the discharging guide rail for one time, so that using is facilitate.

The invention provides a power distribution cabinet with an anti-theft alarm function, which can effectively improve the anti-theft safety performance of the power distribution cabinet. The power distribution cabinet comprises a cabinet body and a cabinet door, wherein a safety lock is arranged on the inner side of the cabinet door, the safety lock comprises two lock tongues, a lock core and a rotating sheet, one end of each lock tongue is movably connected with the rotating sheet through a rivet, the other end of each lock tongue corresponds to a fixing hole on the inner side of the cabinet body, trigger switches are arranged in the fixing holes, and when the cabinet door is closed, the lock tongues can enter into the fixing holes and be in contact with the trigger switches under the rotation of the lock core; an alarm device is arranged on the inner wall of the power distribution cabinet, and the trigger switches are connected with the alarm device through wires; and the alarm device comprises an electric bell, an optocoupler and a rectification circuit and gives out an alarm by virtue of the imbalance of a bridge circuit, and when the cabinet door is damaged, as the lock tongues are positioned in different positions, the contact states between the two lock tongues and the trigger switches are different, the bridge circuit in the alarm device can lose the balance, and an alarm effect is further realized.