2374results about How to "Avoid Electric Shock Accidents" patented technology

The invention discloses an LED lamp. The LED lamp comprises a lamp base and a lamp holder arranged on the bottom of the lamp base. A containing cavity is formed in the bottom in the lamp base. Sliding grooves are formed in the left side and the right side of the containing cavity. Spiral rods are arranged in the sliding grooves, and the tops of the spiral rods are connected with a driver. A sliding plate is arranged in the containing cavity. The two side ends of the sliding plate extend into the sliding grooves and are in cooperation connection with threads of the spiral rods. The bottom of the sliding plate is provided with a connecting block. The bottom of the connecting block penetrates the bottom wall of the lamp base and is in sliding cooperation connection with the bottom wall of the lamp base. First grooves are symmetrically formed in the left and right in the connecting block. Counter bores are formed in the tops of the first grooves. A connecting groove is formed in a bottom end face of the connecting block. Parts, between the connecting groove and the first grooves, of the connecting block are internally provided with through grooves. The outer side wall of each through groove is symmetrically provided with second grooves. First sliding blocks are arranged in the first grooves. First tension springs are arranged between the tops of the first sliding blocks and the corresponding counter bores. The bottom of each first sliding block is provided with a sliding rod extending into the through groove. The LED lamp is simple in structure, convenient to operate, stable in insertion connection and high in safety.

The invention provides an intelligent control system for LED tunnel lamps and a method for controlling the LED tunnel lamps. The system comprises a control center PC computer, a tunnel lamp controllerand lamps, wherein a brightness / temperature / current sensor is connected with the controller via a transmission medium; the control center PC computer is connected with a plurality of drive control modules via the controller and a bus structure; and each drive control module is connected with a constant-current driving power supply of each LED tunnel lamp. Therefore, the system detects the intensity and weakness of light at the entrance and exit of a tunnel in real time via optical detectors distributed in the tunnel by applying highly accurate intelligent detection measure based on an advanced RISC microprocessor, and feeds processed data back to a control center; the control center processes the data and controls various tunnel lamps at different positions so as to control the brightnessof the LED tunnel lamps at different positions and finally achieve the aim of saving energy source.

The invention discloses an LED straight-tube lamp comprising a lamp tube, a lamp cap, a power source and a lamp panel, wherein the lamp cap is arranged at one end of the lamp tube; the power source is arranged in the lamp cap; the lamp panel is arranged in the lamp tube and is provided with a light source; the light source is electrically communicated with the power source through the lamp panel; and the lamp panel is a flexible circuit board of which the end part is provided with a light source pad, and holes are formed in the light source pad. The flexible circuit board is directly welded at the power output end of the lamp cap, so that the quality problem caused by conducting wire migration breakage generated by a wire bonding way in the production, transportation and use processes can be avoided.

The invention discloses an outdoor energy-saving controllable power supply device, which comprises a shell. A first sliding groove is arranged in the shell; a second sliding groove is arranged at the lower part of the first sliding groove in the shell; the right side of the second sliding groove is communicated with a third sliding groove; a slot is arranged at the bottom part on the right end surface of the shell; a fourth sliding groove is arranged in the upper end wall of the slot; a fifth sliding groove and a sixth sliding groove are symmetrically arranged at the left side and the right side of the top end surface of the shell; and a cushion is fixedly arranged in the middle of the top surface of the shell. The whole structure of the device is simple; the production cost is low; the operation is simple; operation among components is automatically controlled; power supply is safe and stable; the reliability is high; happening of electric shock accidents in the existing life can be effectively prevented; the life safety of people is ensured; the solar panel can automatically adjust the inclination angle according to requirements to meet different illumination angles; and promotion and use are facilitated.

The invention discloses a water cup device, which comprises a plug connected to the water cup through wires and an electrical socket connected to the plug. There are first sliding grooves extending from left to right in the seat, which are mutually symmetrical up and down. Between the two first sliding grooves, there is an electric plugging groove with the opening facing the right and mutually symmetrical up and down. In the electric plugging groove A contact piece is fixedly installed, and a second sliding groove connecting the two first sliding grooves is also arranged in the socket. A sliding arm can slide left and right in the first sliding groove, and the sliding arm is right A first toothed bar is provided on the end face facing the electrical insertion slot, and an engaging arm is installed in the second sliding slot so as to slide left and right, and the engaging arm is fixedly connected to the sliding arm.

The present invention discloses safe deduster equipment. The equipment comprises a seat body and an electrical connector in matched connection with the seat body. The periphery of the back side of the seat body is fixedly provided with vertical feet and the vertical feet are provided with universal wheels. The middle end of the lower end surface of the seat body is provided with an insertion opening with a downward port. Inside the seat body, the left and right ends of the insertion opening are respectively, mutually and symmetrically provided with left and right turning grooves configured to extend upwardly. A driving cavity is communicated with the upper parts of the left and right turning grooves. A left locking piece and a right locking piece are respectively arranged inside the left turning groove and the right turning groove. The safe deduster equipment is simple in integral structure, and safe and reliable in whole operation. The problem in the prior art that an electrical connector of a deduster is easily loosened during movement can be effectively solved. The entire equipment is simple and convenient to use and operate, and suitable for popularization and use.

The invention discloses a dust remover device, which comprises a base body and an electrical joint head matched with the base body, the left end of the electrical joint head is connected to the dust remover through a cable, and the middle end of the right end surface of the electrical joint head is arranged There is an insertion arm, and the middle end of the right end face of the insertion arm is provided with an electrical connection end, and a through cavity is provided up and down in the insertion arm, and a base is fixedly installed at the bottom of the base, and a port is arranged in the base and is set downward. The installation slot is equipped with a metal block, and the seat body is provided with a plug-in cavity with the port facing to the left. The present invention has simple structure, safe and reliable operation, simple and convenient operation, and convenient plug-in and pull-out of the electrical connector. It effectively avoids electric shock accidents when plugging and unplugging the electrical connector, and the locking plate is locked in place by two locking devices so that the insertion arm is locked in the plug-in cavity, which increases the stability of the electrical connector when it is powered on. Suitable for promotional use.

A novel cup device comprises a plug and an electric connecting base, a tightly-inserting arm is fixedly arranged at the lower end of the plug, a tapering part and a pointed part located at the lower end of the tapering part are arranged at the lower end of the tightly-inserting arm, and locking grooves extending left and right are formed in the pointed part; a sliding cavity is formed in the electric connecting base, upper sliding grooves are formed in the top wall of the sliding cavity in a bilateral symmetry mode, a tightly-inserting groove communicated with the outer end is formed in the top wall of the upper sliding groove, a sliding block is installed in the sliding cavity in a vertically sliding mode, sliding arms are arranged at the upper end of the sliding block in a bilateral symmetry mode and installed in the upper sliding grooves in a sliding mode, tapering grooves are formed in the sliding arms, through grooves communicated with the tapering grooves are formed in the sliding block in a bilateral symmetry mode, the electric connecting base is arranged at the lower end of the sliding block, a lower sliding groove is formed in the position, below the electric connecting block, of the bottom wall of the sliding groove, and a sliding plate is installed in the lower sliding groove in a vertically sliding mode.

The invention discloses a new energy automobile device, and the device comprises a charging gun and a charging pile body, which are connected with a new energy automobile through cables. The charging gun comprises a pull plate, and the upper and lower ends of the right end face of the pull plate are symmetrically provided with an upper plugboard and a lower plugboard. The right ends of the upper and lower plugboards are respectively provided with an upper inclined surface and a lower inclined surface. The central end of the right end face of the pull plate is provided with a contact, and the right end face of the contact is provided with a movement guide surface. The upper end of the pull plate is provided with a pull slot with the notch facing the right. The upper end wall of the pull slot is provided with a clamping groove. The charging pile body comprises a housing and an extending end disposed at the upper end of the left side of the housing. The whole device can complete the switching-off and switching-on of the contact through the operation of a driver, i.e., the switching-off and switching-on of the new energy automobile. The device is simple and convenient in operation, and the pulling and plugging of the contact are achieved through mechanical motion. There is no need of manual operation for the pulling of the contact, thereby saving the force and preventing an electric shock accident caused by the manual plugging and pulling.

The invention discloses a control circuit and a control method for an internet intelligent AC charging pile, and belongs to the field of electric car charging piles. The control circuit comprises a lightning protection circuit, a power supply circuit, an electric energy metering circuit, a relay, a charging gun, a CPU circuit, an on-off input, an on-off output, a connection detection circuit, an RS485 interface, an Ethernet interface and a GPRS module, wherein a monitoring pin of the lightning protection circuit is connected with a resistor and a diode in series and is isolated with an optocoupler; a signal enters a CPU; one path of output of the electric energy metering circuit is connected with the CPU through a serial port; the on-off input is connected with the CPU; the CPU is connected with the RS485 interface, the Ethernet interface, the GPRS module, the relay and the on-off output respectively; and one path of output of the CPU is connected with the charging gun through the connection detection circuit. A modular design of the original charging pile is changed into an integrated design, so that the material cost and the production cost are reduced; and the reliability is improved. A leakage current is measured in real time; a background management system can know cable insulation in advance; and an electric shock hazard is avoided.

The invention discloses an easy-to-manipulate LED lamp, which includes a base installed in an indoor roof and an LED lamp mated with the base, and is characterized in that: a trapezoidal guide block is arranged on the top of the LED lamp, and the A locking block is arranged on the top surface of the trapezoidal guide block, and a power connector is arranged in the middle of the top surface of the locking block. Two locking cavities are symmetrically arranged on the left and right ends of the locking block. In the present invention, the LED lamp is locked It is firm, and the power supply is safe and stable. When installing, the LED light is locked while the LED light is powered on. When disassembling, the LED light is powered off and the LED light is unlocked at the same time. The whole device is easy to operate and greatly increases It improves the installation and removal efficiency of LED lights, effectively avoids electric shock accidents when installing and removing LED lights, and ensures the safety of staff.

The invention discloses novel new energy vehicle charging equipment. The novel new energy vehicle charging equipment comprises a charging part installed in a charging pile body and a charging gun usedfor being in cooperative connection with the charging part, a base is fixedly installed on the bottom face of the charging pile body, a plugging rod is arranged in the middle of the rear end face ofthe charging gun, an electrifying arm is arranged in the middle of the rear end face of the plugging rod, two locking grooves are symmetrically formed in the left end face and the right end face of the plugging rod respectively, a socket used for being in cooperative connection with the plugging rod is formed in the middle of the front end face of the charging part, and two first slide grooves extending front and back are symmetrically formed in the left end wall and the right end wall of the socket respectively. The novel new energy vehicle charging equipment is simple in overall structure, simple and convenient in operating step and safe and reliable to use, and the charging gun is stably engaged with the charging part.

The invention discloses a new energy automobile charging device with high security protection performance. The charging device comprises a charging pile formed by a propulsion part and a power supply part, and a charging gun. The propulsion part is fixedly arranged in an upper position of the left side of the power supply device. A propulsion sliding groove is arranged in the end face of the bottom end of the propulsion part. A first threaded rod which left-right extends is arranged in the propulsion sliding groove. The left side end of the first threaded rod is connected with a first motor. The right side end of the first threaded rod is in rotatable matched connection with the inner wall of the right side of the propulsion sliding groove. A clamping propulsion block which is in threaded matched connection with the first threaded rod is arranged on the first threaded rod. A push-press rod which extends towards the right side is arranged on the right side end face of the clamping propulsion block under the first threaded rod. A slope push-press head is arranged at the tail end of the right side of the push-press rod. A first sliding cavity which longitudinally extends is arranged in the power supply part. A sink groove is arranged in the inner base wall of the first sliding cavity. The charging device is simple in structure, capable of achieving automatic charging and insertion connection, and capable of automatically controlling exposure and hidden work of a power supply insertion needle, so working efficiency and safety are improved.

The invention discloses an embedded-type power supply apparatus. The embedded-type power supply apparatus comprises a cover groove formed in the upper surface of a floor and a return groove which is formed in the wall of the right side of the floor and parallel to and connected with the cover groove; a cover plate is arranged in the return groove glidingly left and right; two power supply socket holes used for allowing plugs of power utilization equipment to be inserted are formed in the bottom end plane of the cover groove symmetrically left and right; a first power supply sliding groove is formed in the floor; a driving groove connected with the first power supply sliding groove is formed in the wall of the right side of the floor; and the top of the driving groove is connected with theleft side of the return groove, and a second power supply sliding groove is formed between the driving groove and the first power supply sliding groove. The power supply apparatus is arranged in the floor and the wall, so that the existing space can be greatly reduced; and in addition, the power supply apparatus provided by the invention is simple in overall structure, convenient to use and operate, and safe and stable in power supply, and capable of greatly reducing electric shock accidents in the existing life and effectively ensuring life safety of people, and is suitable for popularizationand use.

An LED filament includes LED chips, two conductive electrodes, conductive wires, an enclosure coating, and one or more auxiliary piece. The LED chips are arranged in an array and electrically connected with one another. The two conductive electrodes are corresponding to the array. Each of the two conductive electrodes is electrically connected to a corresponding LED chip at an end of the array. The conductive wires electrically connect the LED chips and the two conductive electrodes. The conductive wires are respectively between every two adjacent LED chips of the array and between each of the two conductive electrodes and the corresponding LED chip at an end of the array. The enclosure coating is on two or more sides of the array and the two conductive electrodes. A portion of each of the two conductive electrodes is exposed from the enclosure. The auxiliary piece is disposed in the enclosure coating and overlaps one of the conductive wires between each of the two conductive electrodes and the corresponding one of the two LED chips respectively at two ends of the array on a radial direction of the LED filament.

The invention discloses new energy vehicle charging equipment. The equipment comprises a pile body. A receiving cavity is arranged in the pile body, a first cavity is arranged in the pile body, above the receiving cavity, a second cavity is arranged in the pile body, on the right of the first cavity, an installation and connection groove is arranged in the outer side wall of the pile body, on the right of the receiving cavity, a storage groove is arranged in the outer side wall of the pile body, above the installation and connection groove, a communication hole is arranged between the installation and connection groove and the receiving cavity, a rotating shaft which extends up and down is arranged in the receiving cavity, the upwards extending section of the rotating shaft penetrates the inner wall of the pile body and is rotatably connected with the inner wall of the pile body in a matching way, the extending tail end at the top of the rotating shaft extends into the first cavity and is fixedly provided with a first cone wheel, the top right of the first cone wheel is connected with a second cone wheel in a meshing way, a transmission shaft which extends to the right side is fixedly arranged on the right of the second cone wheel, the extending section at the right of the transmission shaft penetrates the wall body of the pile body and is rotatably connected with the wall body of the pile body in a matching way, and the extending tail end on the right of the transmission shaft is provided with a first external spline shaft which extends into the second cavity. The new energy vehicle charging equipment has the advantages of simple structure, convenience in operation, capability of lowering manufacturing cost and high security.

The invention discloses an air purification device, which comprises a wall body and a purifier arranged under the wall body, wherein a regulation and control part is arranged in the center of the front end surface of the purifier; an atomization opening is formed in the front end surface of the purifier arranged above the regulation and control part; a power distribution seat is fixedly arranged at the front end surface of the wall body; an electric connection head is arranged at the bottom of the power distribution seat; the bottom of the electric connection head is provided with a conducting wire connected with the back side surface of the purifier; a hollow groove is formed in the inner bottom of the power distribution seat; slide connection grooves are respectively formed in the two sides of the hollow groove; screw rods are arranged in the slide connection grooves; the tops of the screw rods are connected with an electric rotating machine; a slide connection plate is arranged in the hollow groove; the two side ends of the slide connection plate penetrates through the slide connection groove and is connected with the screw rods in a matched way through screw threads; the bottom of the slide connection plate is provided with an assembly block; the bottom of the assembly block penetrates through the bottom wall of the power distribution seat and is in slide matched connection with the power distribution seat; first pushing cavities are correspondingly arranged at the left side and the right side inside the assembly block. The air purification device has the advantages that the structure is simple; the operation is convenient; the automatic insertion connection power supply is realized; the safety is high.

The invention discloses a new energy automobile charging device. The new energy automobile charging device comprises a charging box, a supporting rod, a fixing base and a charging connector, wherein an outer thread connection part is arranged on the front end face of the charging box and internally provided with a through hole; an insertion-connection hole is formed in the position, on the rear side of the through hole, inside the charging box; a conductive insertion rod is arranged on the inner wall of the rear side of the insertion-connection hole; a first cavity is arranged in the position, behind the insertion-connection hole, in the charging box; a sinking tank is arranged on the inner wall of the rear side of the first cavity; a movable block is arranged at the position, on the front side of the sinking tank, in the first cavity; an ejecting spring is arranged between the end face of the rear side of the movable block and the sinking tank; guide rods are symmetrically arranged on the two sides of the ejecting spring and in the first cavity; the guide rods and the movable block are in sliding fit and connection; the front end side of the movable block is provided with an ejecting rod penetrating through the inner wall of the charging box and extending into the insertion-connection hole; grooves are formed in the end walls of the left and right sides of the movable block; spline rotary shafts are symmetrically arranged at the positions, on the outer side of the movable block, in the first cavity; and the rear side ends of the spline rotary shafts are in power connection with a motor. The new energy automobile charging device is simple in structure, firm in charging connection and high in safety.

The invention discloses a power supply plugging device. The power supply plugging device comprises a plug-in part used for connection with electrical equipment by using a wire and a power supply part connected with commercial power. The plug-in part comprises a handheld body. The front end and the rear end of the right end surface of the handheld body are symmetrically provided with two plugging columns, and the right end of each of the plugging columns is provided with a positioning grooves, and in addition, the middle part of the right end surface of the handheld body is provided with a plug. The power supply part comprises a housing, and the left end surface of the housing is provided with an opening facing leftwards and a power supply hole cooperated and connected with the plug. The front end and the rear end of the left end surface of the housing are symmetrically provided with plugging column grooves used for cooperated connection with the plugging columns. The power supply plugging device is advantageous in that a structure is simple, and power supply stability is good, and therefore electric shock accidents during the plugging and the unplugging of the plug-in part are prevented, and life safety of people is guaranteed; the operation of the whole device is safe and reliable, and the locking and unlocking operations of the plugging columns and the plug are simple and convenient, and the unplugging of the plug-in part is convenient and labor-saving.

The invention discloses a wall socket which comprises an insulating socket shell and a panel, wherein the socket shell is internally provided with at least one independent insertion chamber unit, the insertion chamber unit is provided with a plurality of mutually isolated insertion chambers, the panel is provided with at least one jack group with a plurality of jacks, the insertion chamber unit and the jack group are in one-to-one correspondence, the insertion chambers of each of the insertion chamber units and the jacks of the corresponding jack group are in one-to-one correspondence, the insertion chambers of each of the insertion chamber units at least comprise a live line insertion chamber used for connecting a live line and a zero line insertion chamber used for connecting a zero line, and the bottom surfaces of the live line insertion chamber and the zero line insertion chamber are provided with drain holes which penetrate through the insertion chamber unit and are used for draining water, thereby being capable of preventing water or other conductive liquid from getting into the insertion chamber unit from jacks in the panel to cause short circuit. In addition, water in the insertion chamber can be drained timely through the drain holes, thereby further reducing the probability of short circuit and preventing an electric shock accident caused by being contacted with a wall socket with water, and effectively improving the safety of the wall socket.

The invention discloses a self-controlled plug-in new energy vehicle charging pile device. The self-controlled plug-in new energy vehicle charging pile device comprises a pile body and a charging gun head. A storage groove is formed in the pile body. A charging plug-in mechanism is arranged in the inside end face of the storage groove. A plug-in hole is formed in the charging plug-in mechanism. A power supply pin is arranged on the middle position of the inside end face of the plug-in hole. Guide grooves extending along the plug-in hole are symmetrically arranged on the left side and the right side of the plug-in hole. A sliding cavity is arranged on the side, far from the plug-in hole, of each guide groove in the charging plug-in mechanism. A baffle plate is arranged between each sliding cavity and each guide groove. A through groove is formed in each baffle plate. A first sliding groove is formed in the side, far from the baffle plate, of each sliding cavity in the charging plug-in mechanism, and the first sliding grooves are located on the bottom positions of the outer sides of the sliding cavities and communicate with the sliding cavities correspondingly. A second sliding groove is formed above the outer side of each first sliding groove in the charging plug-in mechanism. A guide sliding rod is arranged between each sliding cavity and each first sliding groove. A first sliding block is connected to each guide sliding rod in each sliding cavity in a sliding and matched mode. A second sliding block is connected to each guide sliding rod in each first sliding groove in a sliding and matched mode.

The invention belongs to the leading front edge technology in safety and detection and discloses a practical method for realizing electric leakage alarm and power-down control according to bridge drain voltage testing method and principle of automatic control which can also be used in other technical fields aiming at detecting relative drain voltage. The method is applied to the following aspects detailedly: 1. supervision on electrical device drain voltage and production of detecting instruments for dangerous drain voltage. 2. Production of voltage-type (in relation to RCD) electric leakage protector against electric leakage of electrical device that endangers the operator. 3. Safe operation of electrical equipment and remote supervision plan design. And 4. specifically for the following market scopes: (1) protection against household electrical appliances that endanger human body. (2) Protection against electric tool electric leakage that endangers human body. And (3) earth leakage protection and protection against electric shock for electrical equipment in industrial and mining enterprises.

The invention relates to a mechanical interlocking socket, which comprises a shell (1), a knob switch (2) and a socket component (3). The knob switch (2) comprises a knob (23), a knob switch shaft (22) and a switch mechanism (21). The switch mechanism (21) is adjacent to the socket component (3) in the shell. An interlocking mechanism (4) is additionally arranged between the knob switch (2) and the socket component (3) and is interlocked to release limiting after the knob switch (2) is disconnected, so as to insert in or pull out a plug (5) relative to the socket mechanism (3) and to lock the plug (5) on the socket mechanism (3) after the plug (5) is inserted into the socket mechanism (3) and the knob switch (2) is turned to power on. The mechanical interlocking socket allows a user to insert in and pull out the plug under the situation that the power is cut off, and solves the problem that electric sparks are apt to be produced when the plug of a live high-current circuit is inserted in and pulled out on hot lines live, or accidents such as fire, explosion or short circuit are caused because high current is loaded instantly.

The invention discloses a mobile electric power monitoring device, relates to the technical field of electric power construction, and solves the technical problem for effectively managing and controlling electric working process. The mobile electric power monitoring device comprises an insulating safety helmet and a mobile terminal, a helmet-carried earphone, a helmet-carried microphone, a helmet-carried camera, a headlamp and an electric shock preventing alarming module are arranged on the safety helmet, the mobile terminal is provided with an audio output port, an audio input port and a video input port and is embedded with a wireless communication module, the audio output port of the mobile terminal is connected with the helmet-carried earphone on the safety helmet, the audio input port of the mobile terminal is connected with the helmet-carried microphone on the safety helmet, and the video input port is connected with the helmet-mounted camera on the safety helmet. By the aid of the mobile electric power monitoring device, human cost can be reduced, electric working process can be standardized, and electric working power, working standardization and working safety can be improved.

The invention discloses a socket and plug assembly with an anti-electric-shock function. The socket and a plug assembly comprises a socket body and a plug body. The socket body comprises a cover shelland a bottom plate, a slide plate is arranged inside the cover shell, a square pillar is vertically arranged in a middle portion of an upper end surface of the bottom plate, a square hole is arrangedin the sliding plate, the square column and the square hole are in a sliding fit, and the outer side of the square column between the sliding plate and the bottom plate is sleeved with a first spring. The upper end surface of the sliding plate is provided with a pair of conductive seats, a conductive column at the bottom of each conductive seat movably passes through the sliding plate and then isthreadingly connected to a conductive block, and a copper row is embedded to the bottom plate under each conductive block. The inner walls of two sides of the cover shell are horizontally and slidingly connected to two sliders, the lower end of each slider is provided with a first bending section, the upper end of each slider is provided with a second bending section, a jack is arranged in the cover shell above each second bending section, and a lock mechanism is arranged between the plug body and the socket body. According to the socket and plug assembly, electric shock accidents can be effectively avoided, and the safety hazards are eliminated.

The invention discloses a new type of water cup, which includes a joint head connected to the cup body through a line and a cup holder mated with the joint head. The left end surface of the cup body is fixedly equipped with a handle, and the right end surface is provided with a The outlet of the water outlet, the middle point of the bottom end surface of the cup holder is provided with a slot, and the middle point of the top of the slot is provided with an electrical connection column, and the bottom end surface of the cup holder is located at the left and right ends of the slot. A locking groove, located above the slots, a first chute is connected between the two locking grooves, a cavity is arranged in the top of the first chute, and the first chute The midpoint is provided with a guide rod that expands upwards and pushes into the cavity. The overall structure of the present invention is simple, and the operation is safe and convenient.

The invention discloses a dust collector device. The dust collector device comprises a seat body and an electrical connector matched and connected with the seat body, wherein stand supports are fixedly installed at the periphery of the rear of the seat body, universal wheels are arranged in the stand supports, a socket with a downward port is arranged in the middle of the lower end surface of the seat body, a left rotating groove and a right rotating groove that extend upward are symmetrically arranged at the left end and the right end of the socket in the seat body, a driving cavity is communicated between upper parts of the left rotating groove and the right rotating groove, and the left rotating groove and the right rotating groove are respectively provided with a left locking piece and a right locking piece. The whole dust collector device has a simple structure, runs safely and reliably, prevents the electrical connector from loosing when moving, is easy and convenient to use and operate, and can be promoted.

The invention discloses an advertisement display screen device. The advertisement display screen device comprises a base and a display screen, wherein the base is composed of a push part and a power connection part, and the display screen is used for being connected with the base in a matched mode. A first transmission cavity is formed in the bottom of the lower right end of the push part, a first screw rod is arranged in the first transmission cavity, the right side end of the first screw rod is connected with a first motor in a transmission mode, a sliding lock part is arranged on the first screw rod and connected with the first screw rod in a screw thread fit mode, a second transmission cavity is formed in the sliding lock part, a second screw rod is arranged in the second transmission cavity, the right side end of the second screw rod is connected with a second motor in a transmission mode, an installation groove is formed in the bottom of the second transmission cavity, a cavity is formed in the portion, on the left side of the installation groove, of the sliding lock part, a push block is arranged in the cavity, the upper portion of the push block penetrates into the second transmission cavity and is in screw thread fit with the second screw rod, a placement groove is formed in the portion, on the right side of the installation groove, of the sliding block part, a clamping groove is formed in the lower end of the placement groove, and a guide groove is formed between the clamping groove and the installation groove.