39results about How to "Affect working status" patented technology

A switching-over circuit of engine redundant electric control system consists of master-backup system control circuit separately set on two circuit board with the same function. It is featured as forming said each control circuit by CPU processor, information exchange circuit, CPU interface circuit, master-backup control logic circuit and state processing logic circuit; carrying out real time monitor on master-backup state by utilizing digital signal between master-backup circuit board and generating master-backup control command according to monitored information. Its controlling method is also disclosed.

The invention discloses a fish tank filter which comprises a filter box and a water pumping submersible pump. The filter box comprises a box body and filter materials placed in the box, and a partition plate is further arranged in the box body. The water pumping submersible pump comprises a water suction pipe, a pump body, a water outlet pipe, an oxygen increasing pipe and a fixed sucking disk. An impeller crushing roller is further connected between the water suction pipe and the pump body. The filter materials comprise pp cotton and a mixture of activated carbon, quartz sand and medical stone. The pump body is made of stainless steel, and the box body of the filter box is made of glass. Through the mode, the fish tank filter is simple in structure, and simple and convenient to use, all impurities in a tank can be sucked, filtering precision is high, and the service life is long.

The invention discloses a handheld laser welding device. The handheld laser welding device comprises a welder switch, a cooling switch, a welding cabinet, a U-shaped moving base, universal wheels provided with brake pads, a welder, a cabinet cover, a cooling motor, blades, a hollowed-out hood, a drag hook, an optical fiber, an adjustable handheld welding gun structure, an adjustable splash-proof protective cover structure and a suction-type scrap temporary collection and storage barrel structure. According to the handheld laser welding device, a gun cap, a welding gun body, a fixing pipe, a gun head, a U-shaped handheld rod, an anti-slip sleeve and an adjustment bolt are arranged, the position of the welding gun body in the fixing pipe can be adjusted easily by loosening the adjustment bolt, and thus, welding can be conducted more easily, and the welding device can be held by hand so as to be used more conveniently; and a supporting base, a connecting base, a rotary rod, a splash-proofcover, a connecting shaft and an adjustable telescopic rod are arranged, and the inclination angle of the splash-proof cover can be adjusted according to welding requirements so as to prevent splashmore conveniently.

The invention relates to an LED constant current drive circuit used for a portable device. The LED constant current drive circuit comprises a power supply cell and an LED that is driven; besides, the LED constant current drive circuit also includes: a control chip, which is used for emitting a PWM control signal according to a feedback signal; a switch circuit, which is used for enabling the LED constant current drive circuit to be connected or disconnected according to the PWM control signal; a filter circuit, which is used for converting a pulse current that is output by the switch circuit into a constant current; an output circuit, which is used for outputting the constant current to drive the LED; and a feedback circuit, which is used for emitting the feedback signal according to the constant current. According to the LED constant current drive circuit used for a portable device in the invention, a circuit that is formed by combination of simple electronic components like a one-chip microcomputer is utilized to drive an LED; therefore, the LED can be driven by constant currents and extended functions including power source voltage detection and prompting and the like can be realized; defects of high cost and low expansibility of an original LED constant current drive circuit for a portable device can be overcome.

The invention relates to the technical field of transformers, in particular to an intelligent power transformer having resonance elimination and monitoring functions. The intelligent power transformer includes a housing provided with an oil outlet and an installation plate, a coil arranged in the housing, an oil conservator arranged on the housing and used for supplying cooling oil to the coil, an iron core made of amorphous alloy materials, a resonance elimination coil arranged on the iron core and used for monitoring and regulating the magnetic flow change in the iron core, and a controlling device arranged on the intelligent power transformer or detachably arranged on a working platform and used for monitoring and remotely controlling the coil and the resonance elimination coil. The intelligent power transformer has the advantages that amorphous alloy cores are adopted, the electric energy transmission loss value is reduced, and energy conservation and environment protection are achieved; by the arrangement of the magnetic flow change monitoring and resonance elimination coil, waveform distortion is prevented, and power distribution is affected; by arranging a monitor and a sensor in the controlling device, remote operation of components in a circuit and monitoring of working states of all the components are achieved, and the power transformer is more intelligent, automated and integrated.

The invention provides a numerical-control low-pressure casting machine. The numerical-control low-pressure casing machine comprises a liquid crystal touch screen, a turbo type air compressor pump, a main controller, an air valve, a U-shaped storage crucible and a high-resistance heating layer. The air valve is arranged at the bottom of the left side of a safety protective case. The main controller is installed at the top of the left side of the safety protective case. The liquid crystal touch screen is arranged at the left end of the upper surface of the safety protective case. The U-shaped storage crucible is fixed to the right end of the interior of the safety protective case through a support. The high-resistance heating layer is evenly distributed on the outer wall of the periphery of the U-shaped storage crucible. Compared with the prior art, the numerical-control low-pressure casting machine has the following beneficial effects that the main controller and the liquid crystal touch screen are arranged in cooperation so that the pressure of the numerical-control low-pressure casting machine can be controlled under a numerical-control operating system, flowing stability of molten metal is guaranteed, the flow velocity and the flow can be controlled continuously and accurately, the quantity of internal impurities is reduced, and the quality of workpieces is improved.

The invention discloses a motor with a two-way type air cooling structure. The motor comprises a motor body and a driving control box fixed on the motor body, wherein the motor body comprises a base, a hood casing arranged at the rear part of the base and a fan arranged in the hood casing; a plurality of box body radiating ribs are arranged on the surface of one side, close to the motor body, of the control box, and projections of the box body radiating ribs in the radial direction of the motor body are positioned in the outer edge range of the hood casing. According to the motor disclosed by the invention, heat generated in the control box is conducted through the box body radiating ribs; the box body radiating ribs are arranged on one side, close to the motor body, of the control box, so that a distance between two heating sources can be ensured, and the situation that the operating condition of the motor is affected due to heat accumulation at the contact position between the motor body and the control box is avoided; an original one-way air cooling structure in which air blown by the fan only flows in the direction of machine body radiating ribs is transformed into the two-way air cooling structure in which the air path simultaneously flows through the machine body radiating ribs and the box body radiating ribs, and the motor is simple to transform.

The invention provides a low-voltage metal armored switch safety cabinet, including a pressure-resistant plate, a compression spring, a connecting plate, a main body of the switch safety cabinet, a pull ring, a cabinet door, a gasket, a quick wiring board device, a vacuum cleaner and a shock-absorbing moving wheel device, the lower part of the anti-pressure plate is welded to the upper part of the connecting plate through anti-compression springs; the bolts of the connecting plate are installed on the upper part of the main body of the switch safety cabinet. The arrangement of the dust-absorbing fan blade and the dust-absorbing motor of the present invention is beneficial to dust-absorbing the devices in the main body of the switch safety cabinet, preventing too much dust from affecting the working state of the devices in the main body of the switch safety cabinet; The setting of the shock spring and the bottom plate is beneficial to cooperate with the anti-pressure plate, and the setting of the anti-pressure spring and the connecting plate can buffer and damp the main body of the switch safety cabinet to prevent damage to the main body of the switch safety cabinet during movement or transportation, which will affect the use.

The invention relates to L-band RF (Radio Frequency) system output port protection equipment which comprises an L-band RF system output port protection circuit arranged in a metal sealed cavity, wherein the circuit comprises a coupler, a detection comparison circuit and a digital control feedback circuit; the detection comparison circuit comprises a forward detection circuit, a reverse detection circuit, a tuning circuit and a comparator; the data feedback circuit comprises a data processing circuit, a VSWR (Voltage Standing Wave Ratio) indication circuit and a protection judgment circuit; after the equipment is connected with an RF system final amplifier, an L-band incident wave is separated from a reflected wave in proportion by utilizing the coupler, the separated reflection quantity and incidence quantity are compared by the detection comparison circuit, then a logic level is output, and connected with the digital control feedback circuit, and port matching is judged by data processing, so that when a port is mismatched, the protection circuit can timely close a corresponding sending signal, and a protection function is exerted; and the whole equipment has the characteristics that the equipment is small, exquisite, light, and sensitive in indication and judgment.

The invention discloses a distribution box with dust prevention and heat dissipation functions. The distribution box comprises a heat dissipation box and a distribution box fixedly connected to the upper end surface of the heat dissipation box; a power distribution cavity with a rightward opening is formed in the power distribution box; circuit components are placed in the power distribution cavity; and a first sealing plate capable of sealing the right opening of the power distribution cavity is hinged to the right end wall of the power distribution box. According to the distribution box withthe dust prevention and heat dissipation functions, an air suction device can suck external air into the power distribution box when the power distribution box works, so that components in the distribution box are cooled; before entering the power distribution box, the air can be filtered by a filter plate, and therefore, dust and other impurities can be prevented from entering the power distribution box and influencing the working state of the components; and when the working temperature in the power distribution box exceeds a rated value, a refrigerator can be started to cool the power distribution box.

The invention discloses a lightweight high-strength motor base, and belongs to the technical field of motors. A light-weight high-strength motor base comprises a protective shell, a mounting cavity used for placing a stator is arranged in the protective shell, an air inlet and an air outlet are formed in the top and the bottom of the protective shell respectively, the bottom wall of the protective shell is connected with a support shell, the support shell is communicated with the air outlet, and a heat dissipation assembly is arranged in the support shell. A plurality of elastic telescopic rods are connected to the bottom wall of the support shell, a base is connected to the ends, away from the support shell, of the elastic telescopic rods, a driving mechanism used for driving the heat dissipation assembly to work is arranged on the base, threaded holes are formed in the outer wall of the base, and bolts are movably connected into the threaded holes; when vibration in the operation process of the motor is buffered, the motor can be effectively cooled, and the anti-loosening assembly is controlled to work through dispersed hot air, so that the bolt is fastened by the anti-loosening assembly, the bolt is prevented from loosening, and the operation stability of the device is improved.

The invention belongs to the technical field of office systems, and particularly relates to an interactive office system based on the Internet, which comprises a monitoring module, an operation interface replacement module and a data statistics module; the monitoring module is used for monitoring the effectiveness of the customer service staff in processing the customer information; a classification unit is used for classifying the chat information between the client and the customer service staff; the sound unit is used for converting the consciousness with aggressiveness sent by the client into weak consciousness; the character unit and the picture unit are used for extracting characters with abuse or attack sent by a client and converting the characters into warm or comfortable characters and pictures; the data statistics module is used for carrying out statistics on product problems reflected by clients or problems which cannot be solved by customer service staff. Through the operation interface replacement module, the utterance with aggressiveness or abuse property sent by a client is converted into the utterance with comfortability or warmness, and the working enthusiasm of customer service personnel is improved.

The invention relates to a schoolbag, and more specifically relates to a safe schoolbag with anti-lost functions and alarming functions. The safe schoolbag comprises a bag body, belts, a brightness sensor, LED lamps, and a circuit board; the brightness sensor is arranged on the front surface front end of the bag body; the LED lamps are arranged on the front surface front end of the bag body and the front ends of the belts; one side of the bag body is provided with a waterproof bag; the circuit board is arranged in the waterproof bag; the circuit board comprises a power source, a control device, and an LED driving circuit; the control device is used for adjusting the LED driving circuit based on the brightness sensed by the brightness sensor; and the LED driving circuit is connected with the LED lamps. The safe schoolbag is capable of sending safety warning in walking to and from school of students, or in crossing of the street when light is poor at night or in rainy day or in foggy day.

The invention discloses communication encryption equipment and especially relates to the communication encryption equipment field. The equipment comprises a main body outer shell. An upper cover is movably installed at an upper end of the main body outer shell, a rear cover is arranged at a rear end of the main body outer shell, an inner shell is arranged in the main body outer shell, two installing plates are fixedly installed on two sides of an inner wall of the inner shell, the two installing plates are symmetrically arranged, and a motor is fixedly installed at bottom ends of the installing plates. In the invention, through arranging the upper cover, heat dissipation holes, a screw and the motor, when a workload of the equipment is relatively large, people can eject the upper cover upwards through the screw. The number of the exposed heat dissipation holes is increased so that a heat dissipation effect of the equipment is improved. After work is completed, people can rotate the motor reversely so that the screw can take the upper cover back into the main body outer shell and the heat dissipation holes are closed. Dust is prevented from entering into the equipment from the heatdissipation holes in a placing process, and a use effect of the equipment is improved.

The invention discloses a transfer device, which comprises a cooling device, a device handle, a fixed bracket, a moving wheel, a device base and a placing box. The utility model relates to a cooling device which is connected with a moving wheel through a third transmission mechanism, the rotating power is transferred to the swing device when the moving wheel moves, and then respectively driving the reset mechanism and the second transmission mechanism through the linkage mechanism, Finally, the first helical teeth on the blowing mechanism are meshed with the second helical teeth, and then themain transmission mechanism is driven to rotate, so that the blowing mechanism can generate wind power, blow and cool the user's mask, so as to prevent the worker from being uncomfortable due to long-term working in a dry and hot environment workshop, thereby affecting the working state and efficiency.

The invention discloses an airflow heating device applied to material drying and dehumidification equipment. The airflow heating device comprises a heating box and a heater. The heating box comprisesan outer shell and an inner shell. A closed interlayer space is formed between the outer shell and the inner shell. A heating cavity is formed in the inner shell. The side wall of the inner shell is provided with at least one airflow channel communicating with the interlayer space and the heating cavity. The side wall of the outer shell is provided with an air inlet communicating with the interlayer space and the outside. The side wall of the inner shell is connected with an air outlet pipe. One end of the air outlet pipe communicates with the heating cavity, and the other end of the air outlet pipe penetrates the outer shell to the outside. The heater is arranged on the heating box and used for conducting heating treatment on airflow flowing through the heating cavity. According to the technical scheme of the airflow heating device, the situation that a large amount of heat is prone to being generated in equipment, and the work states of other components are influenced is not likely to happen, and heat can be more efficiently reserved in the heating cavity.

The invention belongs to the technical field of numerical control, particularly relates to a spindle cooling device for a numerically-controlled machine tool, and provides the following scheme for solving the problems that in the prior art, a spindle cooling device is poor in spindle cooling effect and low in cold source using efficiency. The spindle cooling device comprises a cooling box, a spindle is rotatably connected in the middle position between the two sides of the cooling box, a cover plate is fixed to the top of the cooling box, spray heads distributed at equal intervals in the horizontal direction are fixed to the top of the cover plate, a liquid discharging pipe is fixed to the bottom end of the cooling box, and limiting pieces of arc-shaped structures are fixed to the positions, located at the two ends of the spindle, between the inner walls of the two sides of the cooling box. The middle positions of the limiting pieces are arched towards one end far away from the spindle. According to the cooling device, through limiting and flow guiding of the limiting pieces, the cooling device makes full contact with the spindle for heat exchange, an air pipe is matched for blowing air from the middle position to upwards extrude hot steam and disperse heat all around, the actual cooling effect on the main shaft is improved, and the actual utilization effect on the cooling source is improved.

The invention provides a slag removal anti-lock braking system for a rock tube push bench. The tube push bench comprises a tool pipe provided with a drill bit and a matching pipe connected to the tool pipe, and the anti-locking system comprises a slag blocking plate arranged on the tool pipe; and the slag blocking plate can prevent silt and / or stones from flowing along the outer wall of the tool pipe. A slag removal method for the rock tube push bench comprises the steps that tool pipe drill bit torque is collected, and slag is removed through the slag blocking plate; tool pipe drill bit torque is collected, namely, the tool pipe drives the drill bit to rotate, a torque collector collects the torque for driving the drill bit in real time, and when the torque is reduced by 2% or above, a pressurizing part is started to pressurize a spray head or a flushing pipe; and slag is removed through the slag blocking plate, namely, the spray head or the flushing pipe sprays water to the slag blocking plate so that silt and / or stones gathered outside the slag blocking plate can leave the slag blocking plate. The slag removal anti-lock braking system for the rock tube push bench has the advantages that the slag removal anti-lock braking system is particularly suitable for construction of pipelines with the hole diameter ranging from 80 cm to 200 cm, and slurry can be prevented from flowing along the tool pipe to lock the tool pipe.

The invention relates to a device for preventing power failure and crash during recording of an intelligent camera, comprising a device casing and an aluminum protective layer. The upper end of the device casing is provided with a first wiring mechanism, and the lower end of the device casing is provided with a second wiring mechanism , a third wiring mechanism is provided on one side of the equipment casing, the aluminum protective layer is located inside the equipment casing, and the interior of the aluminum protective layer is provided with a ceramic protective layer, and the inner upper wall of the ceramic protective layer is fixed There is a backup power supply electrode, and the lower end of the backup power supply electrode is inlaid with an anti-collision steel plate, and an arc shielding mechanism is installed on the inner front and rear walls of the ceramic protective layer. The beneficial effects of the present invention are: the intelligent camera is programmed to prevent power failure and crash, and the middle of the backup power supply electrode and the working power supply electrode can be shielded by the rubber shielding plate, so as to prevent the arc generated by the backup power supply electrode from affecting the work of the working power supply electrode. , which leads to the instability of the connected electrode conduction voltage when it is high and low.

The invention discloses a handheld laser welding device. The handheld laser welding device comprises a welder switch, a cooling switch, a welding cabinet, a U-shaped moving base, universal wheels provided with brake pads, a welder, a cabinet cover, a cooling motor, blades, a hollowed-out hood, a drag hook, an optical fiber, an adjustable handheld welding gun structure, an adjustable splash-proof protective cover structure and a suction-type scrap temporary collection and storage barrel structure. According to the handheld laser welding device, a gun cap, a welding gun body, a fixing pipe, a gun head, a U-shaped handheld rod, an anti-slip sleeve and an adjustment bolt are arranged, the position of the welding gun body in the fixing pipe can be adjusted easily by loosening the adjustment bolt, and thus, welding can be conducted more easily, and the welding device can be held by hand so as to be used more conveniently; and a supporting base, a connecting base, a rotary rod, a splash-proofcover, a connecting shaft and an adjustable telescopic rod are arranged, and the inclination angle of the splash-proof cover can be adjusted according to welding requirements so as to prevent splashmore conveniently.

The invention discloses a detachable liquid level switch and an installation method thereof; the detachable liquid level switch comprises a box body, a first positioning plate, a second positioning plate, a liquid level detection mechanism, and a sleeve mechanism; the box body is provided with a display window having a protection ring; the box body is fixedly connected on the top face of the first positioning plate through a pedestal; the second positioning plate is connected with the first positioning plate through a first screw; the liquid level detection mechanism and the sleeve mechanism are positioned on the bottom face of the second positioning plate; the liquid level detection mechanism is arranged in the sleeve mechanism; the installation method comprises the following steps: mounting position selection, liquid level switch installation, water level detection test run, and maintenance; the detachable liquid level switch is simple in structure, strong in practical value, has switch function, can transfer real time monitored data to a reception terminal, so the liquid level rising height and speed can be well controlled, thus improving liquid level switch practical value and flexibility; the installation method is simple in steps, strong in operationality, and can improve liquid level switch working precision.

The invention provides a computer controller of a hydraulic climbing frame system. The computer controller comprises a box body, wherein the two sides of the box body are provided with rectangular grooves respectively, the rectangular grooves are both communicated with the inner portion of the box body, the two sides of the box body are provided with multiple mutually parallel strip-shaped groovesrespectively, the strip-shaped grooves are communicated with the inner portions of the corresponding rectangular grooves respectively, the top face and bottom face of each rectangular groove are provided with two guide holes respectively, the guide holes on the upper portion are collinear with the center line of the corresponding guide holes on the lower portion, each rectangular groove is internally provided with two first racks, the upper and lower ends of each first rack are simultaneously inserted into the corresponding guide holes respectively, and the first racks can move vertically along the corresponding guide holes respectively. The computer controller of the hydraulic climbing frame system has the advantages that the weight is lighter, workers cannot consume more physical strength when moving the computer controller, when the computer controller is not used, a movable rod is located in a third through hole, baffles close off the strip-shaped grooves, thereby being capable ofavoiding the situations that dust enter the box body and the dust is adsorbed on a computer control device to affect the working state of the computer control device.

The invention discloses a gear box sealing structure of a reconnaissance robot, and relates to the technical field of gear boxes. The problem that lubricating oil supply of a gear box is inconvenient in a hard environment is solved. The structure specifically comprises an upper box body and a lower box body, and the inner wall of one side of the upper box body is fixedly connected with upper fixing blocks which are evenly distributed through screws; the outer walls of one sides of the upper fixing blocks are fixedly connected with electromagnetic round blocks through screws; the inner wall of one side of the lower box body is fixedly connected with lower fixing blocks which are uniformly distributed through screws; electromagnetic holes are formed in the inner walls of one sides of the lower fixing blocks; a connecting hole is formed in the inner wall of one side of the lower box body; and through holes are machined in the inner walls of the two sides of the upper box body. Gear connecting shafts are rotationally connected to the inner walls of one sides of the connecting hole and the through holes; the peripheral outer walls of the gear connecting shafts are fixedly connected with gear sets; and the outer wall of the top end of the upper box body is fixedly connected with a lubricating oil storage box through screws. By arranging a molybdenum disulfide storage box, it is guaranteed that lubricating oil is supplied to a gear box normally when the reconnaissance robot is in a severe environment.

The invention discloses a base station power supply which is provided with a main control unit and a plurality of branch control units, and the main control unit is connected with the signal end of each branch control unit. The power input end of the shunt control unit is used for being connected with the output end of a transformer in a base station power supply, and the power output end of the shunt control unit is used for being connected with a load. The base station power supply provided by the embodiment of the invention is provided with the main control unit and the plurality of shunt control units, and the isolation between the load and the transformer and between the loads can be realized based on the shunt control units; the fault load can be removed from the transformer power supply network through the control of the main control unit on the shunt control unit corresponding to the fault load or based on the shunt control unit, so that the influence of the fault load on the power supply network is avoided, and the influence on the working states of other normal loads is avoided.

The invention relates to a current source output circuit which includes an isolation circuit [1], a voltage dividing circuit [2], a current source circuit [3], a digital-to-analog conversion circuit [4], a controller [5], an output monitoring circuit [6] and an output shutdown circuit [7]. When the current source output circuit is working, the controller [5] controls the current source circuit [3]to output current through the digital-to-analog conversion circuit [4], in the process of outputting the current, the controller [5] monitors the working state of an output circuit in real time through the output monitoring circuit [6], when the controller [5] detects a circuit output abnormality, the output circuit is shut off through the output shutdown circuit [7], and the affection of the working state of equipment on a machine by the output abnormality is avoided.

The invention belongs to the technical field of office systems, specifically an Internet-based interactive office system, including a monitoring module, an operation interface replacement module, and a data statistics module; the monitoring module is used to monitor the effectiveness of customer service personnel in processing customer information; classification The unit is used to classify and process the chat information between the customer and the customer service personnel; the sound unit is used to convert the aggressive tone issued by the customer into a soft tone; the text unit and the picture unit are used to respond to the insulting or The offensive text is extracted and converted into warm or comforting text and pictures; the data statistics module is used to count whether the customer reflects a product problem, or the customer service personnel failed to solve the customer's problem for statistics; replace the module through the operation interface, so that The offensive or abusive words issued by customers are transformed into comforting or warm words, which improves the enthusiasm of customer service staff.

A circuit board comprises an inner-layer circuit substrate, an electronic element, a heat storage assembly, a first outer-layer circuit substrate and a second outer-layer circuit substrate. The inner-layer circuit substrate comprises a first inner-layer circuit layer, an inner-layer dielectric layer and a second inner-layer circuit layer which are stacked, and further comprises a first heat conductor which penetrates through the inner-layer dielectric layer and is connected with the first inner-layer circuit layer and the second inner-layer circuit layer; the electronic element is located on the surface of the inner layer circuit substrate and is connected with the first inner layer circuit layer; the heat storage assembly is located on the surface, away from the electronic element, of the inner-layer circuit substrate and connected with the second inner-layer circuit layer. The first outer-layer circuit substrate is positioned on the surface of the inner-layer circuit substrate, which is provided with the electronic element, and covers the electronic element; the second outer-layer circuit substrate is located on the surface, provided with the heat storage assembly, of the inner-layer circuit substrate and covers the heat storage assembly. The invention further provides a manufacturing method of the circuit board. The circuit board with the heat storage assembly has the functions of storing heat and delaying heat release, and concentrated heat release of the circuit board is avoided.

The invention discloses a communication power supply cabinet, and relates to the technical field of communication, the power supply cabinet comprises a cabinet body and a bearing installation part, the outer wall of the cabinet body is provided with at least one maintenance port, the bearing installation part is arranged in the cabinet body, and the side part of the bearing installation part is hinged to the inner wall, close to the maintenance port, of the cabinet body; the device further comprises a driving piece, a winding roller assembly and a transmission assembly. The winding roller assembly is arranged at the end, away from the overhaul port, of the bearing installation piece and used for winding and combing a wire connected with the communication power supply device. The driving part is arranged on the inner wall of the cabinet body and is used for driving the bearing mounting part to rotate around the hinged part of the bearing mounting part and the side wall of the cabinet body; the transmission assembly is arranged in the cabinet body and used for driving the winding roller assembly to rotate when the bearing installation piece rotates. The power supply device turnover device is simple in structure, the power supply device can be turned over to the cabinet door to facilitate maintenance, and in the turnover process, a wire of the power supply device is loosened or tensioned, so that subsequent disassembly is facilitated, and looseness of the wire after installation is avoided; operation is convenient and practicality is high.