35results about How to "Automatic control lock" patented technology

The invention discloses an air purification device. The air purification device comprises a fastener and a purifier mounted in an electric connection seat, a clamping seat fixed above the right side surface of the purifier and a plug clamped in the clamping seat, wherein the center of the front end surface of the purifier is provided with a regulation and control part; the front end surface of the purifier above the regulation and control part is provided with an atomization port; the bottom of the purifier is provided with angle posts; the plug comprises an insertion part and a gripping part fixed to the bottom of the insertion part; a slotted hole is arranged in the top end surface of the insertion part; a tactile sensor is arranged in the slotted hole; a first slip cavity is arranged in the insertion part below the slotted hole; the left and right sides of the first slip cavity are correspondingly provided with second slip cavities; one side of the second slip cavity away from the first slip cavity is provided with a first cavity; a first slip block is arranged in the second slip cavity; an oblique head block penetrating into the first slip cavity is arranged at the inner side of the first slip block; a locking block penetrating through the first cavity and penetrating through the outer side wall of the insertion part is arranged at the outer side of the first slip block; a spiral rod is arranged in the first slip cavity; and the bottom of the spiral rod is connected with an electric rotating machine. The air purification device is simple in structure, convenient to use and favorable in purification effect, can automatically control locking, facilitates socket joint, has high firmness after being placed in a certain position, prevents the socket joint loosening phenomenon caused by accidental touch, and has prolonged service life.

The invention provides a parking lock. The parking lock comprises a machine body, a storage cavity positioned in the top wall of the machine body and opened up, and a hydraulic cavity positioned in the machine body; a stopper is rotationally arranged in the storage cavity; a groove opened up is formed in the top wall of the stopper; a vehicle license plate recognition device is arranged in the left side end wall of the stopper; a rotating cavity is formed in the bottom wall of the stopper; a first rotating shaft extending front and back is fixedly arranged in the rotating cavity; a first gearis fixedly arranged on the outer surface of the first rotating shaft; a first slide hole is formed in the right side end wall of the storage cavity; and a first rack engaged with the first gear is arranged in the first slide hole. Equipment can recognize vehicle license plates to control locking and unlocking of the parking lock, meanwhile, can use self gravity of vehicles to drive storage of theparking lock, and automatically control locking of stalls to achieve higher practicability when the vehicles are driven away from the stalls.

The invention discloses a portable high-efficiency pesticide spraying device, which comprises a spraying vehicle body, a chemical storage spraying mechanism arranged on the top of the chemical spraying vehicle body, a spraying frame mechanism installed on the left end surface of the chemical spraying vehicle body, and a chemical storage spraying mechanism. It is composed of a medicine storage box and a spray pump. The medicine storage box is rotated and connected with a downwardly extending stirring shaft. The spraying body below the medicine storage box is provided with a first sliding chamber, and the bottom end of the stirring shaft extends into the first The first cone wheel is fixed in the sliding chamber and at the end, and the first sliding block is slidably connected to the first sliding chamber on the right side of the first cone wheel, and the first motor is provided in the left end surface on the upper side of the first sliding block The left side of the first motor is mated with a second cone wheel that extends out of the left end face of the first sliding block and is used to cooperate with the first cone wheel. The spraying body below the first slide chamber is provided with a second Motor; the present invention is simple in structure, easy to operate, convenient to disassemble and install, convenient to move, carry and maintain, saves time and effort, stirs evenly, and improves work efficiency.

The invention discloses an environmental protection device, which comprises a machine base and a flushing structure arranged above the top of the machine base, a support column is arranged on the top surface of the left side of the machine base, and a first sliding groove is arranged opposite to the front and rear on the left side top surface of the machine base , the center of the inner bottom surface of each first sliding groove is provided with a second sliding groove, and the second sliding groove is provided with a first screw rod extending left and right, and the first sliding groove is connected with a first sliding groove. The sliding block has a sliding cavity inside the flushing structure, a convex part inside the right side of the sliding cavity, a locking cavity extending to the right inside the convex part, and a flushing motor fixed on the bottom surface of the flushing structure. The bottom of the flushing motor is connected with a flushing head, and a through hole is arranged between the top of the flushing motor and the bottom of the locking cavity, and a rotating shaft extending up and down is connected in the through hole; the invention has simple structure, high safety, and improves the flushing efficiency and flushing accuracy.

The invention discloses a bridge safety warning device. The bridge safety warning device includes a mounting base and a warning device; a groove which is in matching connection with the warning device is formed in a right side wall of the mounting base; handle grooves are arranged in an upper end and a lower end of the groove on the right side wall of the mounting base equally; handles stored in the handle grooves are arranged on an upper end wall and a lower end wall of the warning device; a first slide cavity and a second slide cavity are formed in an upper end and a lower end of the mounting base on the left side of the groove equally; an unlocking slide cavity is formed in the mounting base between the first slide cavity and the second slide cavity; a communication groove passing through the unlocking slide cavity is formed between the left bottom of the first slide cavity and the left top of the second slide cavity; and locking grooves extending downward are formed in right bottoms of the first slide cavity and the second slide cavity. The bridge safety warning device is simple in structure, can save mounting time and effort, and is easy to maintain.

The invention provides a vehicle door connecting structure, a vehicle door opening and closing control system and a vehicle. The vehicle door connecting structure comprises a hinge (10), a first connecting rod (21) and a driving piece (40); the hinge is provided with a vehicle door joint (11) and a vehicle body joint (12), and a gear (112) is formed on a hinge shaft (111) of the vehicle door joint; the first connecting rod is provided with a first rotary shaft (31) enabling the first connecting rod to be rotatably connected to a vehicle door, and first limiting teeth (211) capable of stretching into tooth grooves of the gear are formed in the first connecting rod; and the driving piece (40) is connected to the first connecting rod and used for driving the first connecting rod to rotate around the first rotary shaft to enable the first limiting teeth to stretch into or be disengaged from the tooth grooves. When the first limiting teeth stretch into the tooth grooves, rotation of the gear can be limited, thus rotation of the vehicle door joint of the hinge is limited, and then the vehicle door can be locked at the current position to prevent a passenger from being accidentally nippedand then injured; and when the first limiting teeth are disengaged from the tooth grooves, the gear can freely rotate with the vehicle door joint, and thus the passenger can further open or close thevehicle door.

The invention discloses a bridge caution device facilitating demounting and mounting. The bridge caution device includes a mounting base and a warning device; a groove which is in matching connection with the warning device is formed in a right side wall of the mounting base; handle grooves are arranged in an upper end and a lower end of the groove on the right side wall of the mounting base equally; handles stored in the handle grooves are arranged on an upper end wall and a lower end wall of the warning device; a first slide cavity and a second slide cavity are formed in an upper end and a lower end of the mounting base on the left side of the groove equally; an unlocking slide cavity is formed in the mounting base between the first slide cavity and the second slide cavity; a communication groove passing through the unlocking slide cavity is formed between the left bottom of the first slide cavity and the left top of the second slide cavity; and locking grooves extending downward are formed in right bottoms of the first slide cavity and the second slide cavity. The bridge caution device is simple in structure, can save mounting time and effort, and is easy to maintain.

The invention discloses a novel garbage treatment device. The novel garbage treatment device comprises a base body, and a compression device arranged above the top of the base body; a support column is arranged on the top surface of the left side of the base body; first slide grooves are correspondingly formed in the top surface of the left side of the base body front and back; second slide grooves are formed in the centers of the bottom surfaces in the two first slide grooves; first spiral rods extending left and right are arranged in the second slide grooves; first slide blocks are slidinglymatched and connected into the first slide grooves; a slide cavity is formed in the compression device; a convex block is arranged in the right side of the slide cavity; a locking cavity extending tothe right side is formed in the convex block; a compression motor is fixedly arranged in the bottom surface of the compression device; the bottom of the compression motor is matched and connected with a compression head; a through groove is formed between the top of the compression motor and the bottom of the locking cavity; and a rotating shaft extending up and down is matched and connected intothe through groove. The novel garbage treatment device is simple in structure and high in safety, and improves the compression efficiency and the compression precision.

The invention discloses a food safety detector which comprises a shell, a power plug and a power supply used for matching and connecting with the power plug, wherein the power plug is fixedly arranged at the bottom of the rear end of the shell; a detecting box is arranged at the top of the shell; an operation panel is arranged on the front part of the shell; an inserting slot is formed in an end face on the left side of the power supply; a first electrifying head is arranged in the end face on the left side of the inserting slot; a first sliding chamber is arranged in the power supply above the inserting slot; a first slot part is arranged at the top in the first sliding chamber; a second sliding chamber which is communicated with the first sliding chamber is arranged in an inner wall on the left side of the first sliding chamber; a sliding slot is formed at the top in the second sliding chamber; a first sliding block is arranged in the first sliding chamber; a first spring is arranged between the top of the first sliding block and the first slot part; a locking block which penetrates through an inner chamber of the power supply and is inserted into the inserting slot is arranged at the bottom of the first sliding block; and a right pushing sliding block is in sliding fit with the interior of the second sliding chamber. The food safety detector has the advantages of simple structure, convenience in operation, capability of automatically controlling and locking, high locking stability and capability of promoting the use safety.

The invention discloses an energy-saving water heater plug-in structure, which includes a socket and a plug for matching and connecting with the socket. Rod, the socket above the plug-in groove is provided with a first sliding chamber, the upper surface of the first sliding chamber is provided with a first groove, and the inner wall on the left side of the first sliding chamber is provided with a groove corresponding to the first sliding chamber. The through second sliding chamber, the upper surface of the second sliding chamber is provided with a sliding groove, the first sliding chamber is provided with a first sliding block, the top of the first sliding block and the first groove There is a first spring coil, the bottom of the first sliding block is provided with a locking block that penetrates the inner end wall of the socket and extends into the socket, and the second sliding cavity is slidably connected with a right sliding block; The invention has the advantages of simple structure, convenient operation, automatic locking control, high locking stability, preventing direct exposure of the power-on terminal, and improving safety when plugged in and used.

The invention discloses a novel information reading device. The device comprises a reading part and an information storage carrier connected with the reading part in a matched way; a slot is formed in the end surface of the left side of the reading part; a first reading head is arranged in the end surface of the left side of the slot; a first moving cavity is formed in the reading part at the upper part of the slot; a first square groove is formed in the upper end surface of the first moving cavity; a second moving cavity connected with the first moving cavity is formed in the inner wall of the left side of the first moving cavity; a moving groove is formed in the upper end surface of the second moving cavity; a first moving block is arranged in the first moving cavity; a first elastic part is arranged between the top of the first moving block and the first square groove; a locking head connected with the interior of the reading part and extending into the slot is arranged at the bottom of the first moving block; and a right moving block is connected into the second moving cavity in a moving-fit manner. The device is simple in structure and convenient in operation; locking can be automatically controlled; the locking stability is high; and the information reading stability is improved.

The invention discloses a bridge construction equipment, which comprises a base and a main body fixedly installed in the base. A storage chamber extending downward is arranged on the top surface on the left side of the main body. Discharge port, the bottom surface of the main body below the discharge port is provided with a vertical cavity with the top connected to the bottom of the discharge port, the discharge port is penetrated with a first sliding cavity extending left and right, and the first sliding cavity is slidingly fitted and connected with Sliding plate, there is an outlet in the left section of the sliding plate, and a first sliding groove is provided in the top surface of the sliding plate on the right side of the outlet, and the inner thread on the right side of the sliding plate is matched with a joint extending to the right. The set screw, the extended tail on the right side of the screw is connected with the first motor; the invention has the advantages of simple structure, convenient operation, improved use safety and service life, can automatically control the concrete pouring work, and reduce the workload of operators.

The invention relates to information reading equipment. The equipment comprises a reading part and an information storage carrier in cooperative connection with the reading part, the end surface of the left side of the reading part is internally provided with a plugging-tightly groove, the end surface of the left side of the plugging-tightly groove is internally provided with a first read head, a first mobile cavity is formed in the reading part and above the plugging-tightly groove, the upper end surface inside the first mobile cavity is provided with a first square groove, the inner wall of the left side of the first mobile cavity is internally provided with a second mobile cavity communicated with the first mobile cavity, the upper end surface inside the second mobile cavity is provided with a mobile groove, the first mobile cavity is internally provided with a first mobile block, a first elastic piece is arranged between the top of the first mobile block and the first square groove, the bottom of the first mobile block is provided with a locking-in head which is communicated with the interior of the reading part and extends into the plugging-tightly groove, and a rightward mobile block is in mobile cooperative connection with the interior of the second mobile cavity. The information reading equipment is simple in structure and convenient to operate, and can automatically control locking-in, the locking-in stability is high, and the stability when information is read is improved.

The invention discloses an air purifier, comprising a fastener mounted in an electrical connection seat, a purifier, a clamp seat fixed above the right side face of the purifier, and a plug clamped into the clamp seat, wherein the center of the front end face of the purifier is provided with a regulation and control part, the front end face of the purifier above the regulation and control part is provided with an atomization opening, the bottom of the purifier is provided with a corner post, the plug comprises a plug joint part and a grabbing part fixed to the bottom of the plug joint part, a slotted hole is formed in the end face of the top of the plug joint part, a tactile sensor is arranged in the slotted hole, a first sliding-connection cavity is formed in the plug joint part below the slotted hole, second sliding-connection cavities are correspondingly formed in left and right sides of the first sliding-connection cavity, the sides, away from the first sliding-connection cavity, of the second sliding-connection cavities are provided with first cavity bodies, and first sliding-connection blocks are arranged in the second sliding-connection cavities. The air purifier is simple in structure and convenient to use, has a better purification effect, can be automatically controlled and locked, plugging connection is facilitated, the stability is high after plugging, the phenomenon of loose plugging connection caused by accidental touch is prevented, and meanwhile the service life is prolonged.

The invention discloses an air purification device. The air purification device comprises a fastener and a purifier mounted in an electric connection seat, a clamping seat fixed above the right side surface of the purifier and a plug clamped in the clamping seat, wherein the center of the front end surface of the purifier is provided with a regulation and control part; the front end surface of the purifier above the regulation and control part is provided with an atomization port; the bottom of the purifier is provided with angle posts; the plug comprises an insertion part and a gripping part fixed to the bottom of the insertion part; a slotted hole is arranged in the top end surface of the insertion part; a tactile sensor is arranged in the slotted hole; a first slip cavity is arranged in the insertion part below the slotted hole; the left and right sides of the first slip cavity are correspondingly provided with second slip cavities; one side of the second slip cavity away from the first slip cavity is provided with a first cavity; a first slip block is arranged in the second slip cavity; an oblique head block penetrating into the first slip cavity is arranged at the inner side of the first slip block; a locking block penetrating through the first cavity and penetrating through the outer side wall of the insertion part is arranged at the outer side of the first slip block; a spiral rod is arranged in the first slip cavity; and the bottom of the spiral rod is connected with an electric rotating machine. The air purification device is simple in structure, convenient to use and favorable in purification effect, can automatically control locking, facilitates socket joint, has high firmness after being placed in a certain position, prevents the socket joint loosening phenomenon caused by accidental touch, and has prolonged service life.

The invention provides a vehicle door connecting structure, a vehicle door opening and closing control system and a vehicle. The vehicle door connecting structure comprises a hinge (10), a first connecting rod (21) and a driving piece (40); the hinge is provided with a vehicle door joint (11) and a vehicle body joint (12), and a gear (112) is formed on a hinge shaft (111) of the vehicle door joint; the first connecting rod is provided with a first rotary shaft (31) enabling the first connecting rod to be rotatably connected to a vehicle door, and first limiting teeth (211) capable of stretching into tooth grooves of the gear are formed in the first connecting rod; and the driving piece (40) is connected to the first connecting rod and used for driving the first connecting rod to rotate around the first rotary shaft to enable the first limiting teeth to stretch into or be disengaged from the tooth grooves. When the first limiting teeth stretch into the tooth grooves, rotation of the gear can be limited, thus rotation of the vehicle door joint of the hinge is limited, and then the vehicle door can be locked at the current position to prevent a passenger from being accidentally nippedand then injured; and when the first limiting teeth are disengaged from the tooth grooves, the gear can freely rotate with the vehicle door joint, and thus the passenger can further open or close thevehicle door.

The invention discloses a welding device which comprises a base and a welding assembly arranged above the top of the base. A pillar is arranged on the top face of the left side of the base, and first sliding grooves are correspondingly formed in the top face of the left side of the base in a left-right manner. A second sliding groove is formed in the middle point of the inner bottom face of each first sliding groove. A first spiral rod extending left and right is arranged in each second sliding groove. A first sliding block is connected in each first sliding groove in a sliding fit manner. A sliding cavity is formed in the welding assembly. A protruding block is arranged in the right side of the sliding cavity, and a locking cavity extending towards the right side is formed in the protruding block. A welding electric rotating machine is fixedly arranged in the bottom face of the welding assembly, a welding head is cooperatively connected to the bottom of the welding electric rotating machine, an open groove is formed between the top of the welding electric rotating machine and the bottom of the locking cavity, and a shaft rod extending vertically is cooperatively connected in the open groove. The welding device is simple in structure, high in safety and capable of improving the welding efficiency and the welding accuracy.

The invention discloses a food safety detector with stable operation, which comprises a housing, a power connector and a power body for matching and connecting with the power connector shown, the power connector is fixedly arranged at the bottom of the rear end of the housing, and There is a detection box, an operation panel is set on the front of the shell, an insertion slot is provided in the left end surface of the power supply body, a first power-on head is provided in the left end surface of the insertion slot, and a power supply body above the insertion slot is provided with a The first slide chamber, the top of the first slide chamber is provided with a first groove, the left inner wall of the first slide chamber is provided with a second slide chamber communicated with the first slide chamber, and the top of the second slide chamber is provided with a slide Groove, the first slide chamber is provided with a first slide block, a first spring is provided between the top of the first slide block and the first groove, and a spring is provided at the bottom of the first slide block to pass through the inner cavity of the power supply and extend into the mating joint. The locking block in the groove and the sliding fit in the second sliding chamber are connected with a right-push sliding block; the invention has simple structure, convenient operation, automatic locking control, high locking stability, and improved safety during use.

The invention discloses an efficient portable pesticide spray device comprising a pesticide spray vehicle body, a pesticide storage and spray mechanism arranged at the top of the pesticide spray vehicle body and a spray frame mechanism mounted on the left end surface of the pesticide spray vehicle body; the pesticide storage and spray mechanism is composed of a pesticide storage box and a pesticide spray pump; a stirring shaft which extends downwards is rotatably matched and connected to the inside of the pesticide storage box; the pesticide spray vehicle body arranged under the pesticide storage box is internally provided with a first sliding cavity; the bottom end of the stirring shaft extends into the first sliding cavity and is fixedly provided with a first conical wheel; a first slideblock is slidably matched and connected to the inside of the first sliding cavity at the right side of the first conical wheel; the left end surface at the upper side of the first slide block is internally provided with a first motor; the left side of the first motor is matched and connected with a second conical wheel which extends out of the left end surface of the first slide block and is matched and connected with the first conical wheel; and the pesticide spray vehicle body located below the first sliding cavity is internally provided with a second motor. The efficient portable pesticidespray device is simple in structure, convenient to operate, dismount, mount, move, carry and maintain, time-saving, labor-saving, uniform in stirring and capable of increasing the work efficiency.

The invention discloses a novel biomedical metal plate machining device. The novel biomedical metal plate machining device comprises a base table and a grinding device arranged above the top of the base table. A vertical pillar is arranged on the top face of the left side of the base table. First sliding connection grooves are formed in the top face of the left side of the base table in a front-back symmetry mode. The middle of the bottom face in each first sliding connection groove is provided with a second sliding connection groove. A first threaded rod extending left and right is arranged in each second sliding connection groove. First sliding connection blocks are connected in the first sliding connection grooves in a sliding fit mode. A sliding connection cavity is formed in the grinding device. A convex head is arranged inside the right side of the sliding connection cavity. A locking connection cavity extending rightwards is formed in the convex head. A grinding power device isfixedly arranged in the bottom face of the grinding device. A grinding head is connected to the bottom of the grinding power device in a matched mode. A via hole is formed between the top of the grinding power device and the bottom of the locking connection cavity, and a power shaft extending up and down is connected to the interior of the via hole in a matched mode. The novel biomedical metal plate machining device is simple in structure and high in safety and improves the grinding efficiency and the grinding precision.

The invention discloses a solar water heater plug-in structure comprising a socket and a plug matched and connected with said socket; a plug-in slot is arranged in the left end face of the socket; a first trolley pole is arranged in the left end face of the plug-in slot; a first slide cavity is arranged in the socket above the plug-in slot; the top surface in the first slide cavity is provided with a first groove; the left inner wall of the first slide cavity is provided with a second slide cavity connected with the first slide cavity; the top surface in the second slide cavity is provided with a slide groove; a first slide block is arranged in the first slide cavity; a first spring coil is arranged between the first slide block top and the first groove; the first slide block bottom is provided with a locking piece penetrating the socket inner end wall and extending to the plug-in slot; a rightward slide block is matched and connected in the second slide cavity in a slide manner. The solar water heater plug-in structure is simple in structure, easy to operate, can automatically control locking, is high in locking stability, and can prevent the plugging end from directly exposing, thus improving the plug-in safety in usage.

The invention discloses a high-safety fertilization device, which comprises a mobile car body and a fertilizer applicator fixedly installed in the mobile car body. A storage cavity extending downward is arranged in the top end surface on the left side of the fertilizer applicator. The material storage cavity The end of the bottom extension is connected with a discharge port, and the bottom end surface of the fertilizer applicator below the discharge port is provided with a feeding port at the top connected to the bottom of the discharge port, and the discharge port is provided with a first sliding cavity extending left and right , the first sliding cavity is slidingly connected with a feeding sliding plate, the left section of the feeding sliding plate is provided with a discharge port, the top end surface of the feeding sliding plate on the right side of the discharge port is provided with a first slope sliding groove, and the feeding sliding plate The internal thread on the right end face is connected with a threaded rod extending to the right, and the right end of the threaded rod is connected with the first motor; the present invention has simple structure, convenient operation, improved use safety and service life, and can automatically control fertilization Work, reduce the workload of operators.

The invention discloses an air purification device with a long service life, which comprises an adapter installed in an electric connection seat, a purifier, a card seat fixed above the right side of the purifier, and a plug inserted into the card seat. The center of the front face of the purifier is provided with a control part, the front face of the purifier above the control part is provided with an atomization port, the bottom of the purifier is provided with a corner post, and the plug includes an insertion part and a grip part fixed at the bottom of the insertion part , there is a slot hole in the top end surface of the insertion part, a touch sensor is provided in the slot hole, a first sliding connection cavity is provided in the insertion part below the slot hole, and a second sliding connection cavity is provided on the left and right sides of the first sliding connection cavity. The first cavity is provided on the side where the second sliding joint cavity is far away from the first sliding joint cavity; the present invention is simple in structure, easy to use, good in purification effect, can automatically control the locking, is convenient for insertion and has high stability after insertion, and prevents accidental contact The phenomenon of plugging loosening caused by collision, and the service life is improved at the same time.

The invention relates to information reading equipment. The equipment comprises a reading part and an information storage carrier in cooperative connection with the reading part, the end surface of the left side of the reading part is internally provided with a plugging-tightly groove, the end surface of the left side of the plugging-tightly groove is internally provided with a first read head, a first mobile cavity is formed in the reading part and above the plugging-tightly groove, the upper end surface inside the first mobile cavity is provided with a first square groove, the inner wall of the left side of the first mobile cavity is internally provided with a second mobile cavity communicated with the first mobile cavity, the upper end surface inside the second mobile cavity is provided with a mobile groove, the first mobile cavity is internally provided with a first mobile block, a first elastic piece is arranged between the top of the first mobile block and the first square groove, the bottom of the first mobile block is provided with a locking-in head which is communicated with the interior of the reading part and extends into the plugging-tightly groove, and a rightward mobile block is in mobile cooperative connection with the interior of the second mobile cavity. The information reading equipment is simple in structure and convenient to operate, and can automatically control locking-in, the locking-in stability is high, and the stability when information is read is improved.

The invention discloses an intelligent anti-theft device. The intelligent anti-theft device comprises an anti-theft body and an accommodating groove opened rightward and formed in the right end of theanti-theft body, wherein a first slide guide slot located in the left end of the accommodating groove and communicating to the accommodating groove is formed in the anti-theft body; a first cavity isformed in the inner wall of the bottom of the first slide guide slot in a communicating mode; a second cavity located in the back end of the first cavity is formed in the anti-theft body; a locking slide block is slidably matched and connected in the accommodating groove; the locking slide block stretches out of the right end of the accommodating groove; a first slide guide block extending left and right is slidably matched and connected in the first slide guide slot; and the tail end of the right end of the first slide guide block stretches into the accommodating groove and is fixedly connected to the end surface of the left end of the locking slide block. The intelligent anti-theft device disclosed by the invention is simple in structure, convenient to operate and high in degree of automation, and meanwhile, the anti-theft effect is improved.