37results about How to "Low structural cost" patented technology

This application provides a method, apparatus, and electronic device for controlling a motor. Without using a Hall sensor or other device to detect motor speed, the processor in the electronic device calculates the peak voltage of the AC power supply driving the motor using a zero-crossing detection signal. Then, based on the peak voltage, it determines when the motor speed needs adjustment. The voltage control circuit adjusts the AC power supply voltage to the motor, thereby achieving motor speed adjustment. Therefore, this application reduces the structural complexity and cost of the electronic device while controlling the motor, and also improves the user experience of the electronic device.

The present application relates to the technical field of tunnel construction, in particular to a tunnel shield support non-blasting excavation method and equipment, the excavation method comprises four steps of drilling and pumping, concrete solidification, excavation of the surrounding rock and waterproof treatment, the method forms a concrete closed-loop shield support system by drilling and pumping in advance, a stable closed-loop support structure is formed before the excavation of the surrounding rock, effectively preventing the large deformation of soft rock and the rock burst phenomenon caused by stress release in hard rock during tunnel excavation; the system anchor rod, concrete spraying construction and explosive blasting process in the traditional support system are cancelled, which is safe and reliable, and has high economic benefits. The excavation equipment shares a propulsion mechanism through the spiral drill module and the reverse circulation down-the-hole drill module, without the need for separate propulsion devices for the two drill bits, the feed is achieved by driving the arc-shaped limiting piece with a chain, and the limiting block, the worm and the ring worm gear transmission self-locking function are matched to ensure the positioning accuracy of the drill bit during drilling, and to reduce the complexity of the equipment structure and the purchase and maintenance cost.

This application relates to the field of flexible plate testing technology, and in particular to a flexible plate testing device, including a fixed plate, a sliding plate, a follower plate, and a driving mechanism. The top surface of the fixed plate is suitable for connection to one end of the flexible plate. The top surface of the follower plate, at the end away from the sliding plate, is suitable for connection to the other end of the flexible plate. The driving mechanism is connected to the sliding plate and is used to drive the sliding plate to perform linear reciprocating motion, thereby driving the follower plate to perform linear reciprocating motion. During this process, the position of the crease in the middle of the flexible plate continuously changes. The fixed plate, sliding plate, and follower plate cooperate with each other to realistically simulate the bending and stretching states of the flexible plate in actual use. The gap between the top surface of the fixed plate and the bottom surface of the follower plate can be adjusted according to the thickness and bending radius of the flexible plate being measured to meet the testing requirements of various working conditions, greatly improving versatility.

This utility model belongs to the field of battery formation equipment technology, specifically relating to a carrier for battery formation equipment. It includes a body and a top cover magnetically connected to the body. The body has a battery accommodating cavity, a test probe assembly located at the edge of the battery accommodating cavity, and a PCB adapter board connected to the test probe assembly. The PCB adapter board is located on the side of the body. Compared to existing technologies, this utility model, through ingenious structural design, makes the carrier a detachable structure of body and top cover, with the two magnetically connected. This simplifies the operation when placing the battery into the carrier, and the overall structure has low cost. It also allows for easy switching between different battery types when needed for formation.

The application provides a multi-frequency antenna remote controller, which comprises a shell, a cavity in the shell, an external antenna assembly arranged on the top of the shell, an internal antenna assembly arranged on the top of the cavity, and a picture transmission PCB arranged in the cavity and connected with the external antenna assembly and the internal antenna assembly through feed lines, wherein the external antenna assembly and the internal antenna assembly have different transmitting frequency bands. The external antenna shared by 1.4G / 2.4G frequency bands and the internal antenna of the 5G frequency band are arranged, so that when the signal of a certain frequency band is lost, communication can be switched to another frequency band, and the remote controller is not easily interfered. In addition, the structure of the external antenna and the internal antenna is simple, so that the structural cost is reduced, and the remote controller is more beautiful.

The utility model discloses a device of galvanizing line switches to annealing line is provided with first auxiliary deflector and second auxiliary deflector between zinc pot and furnace nose, first auxiliary deflector and second auxiliary deflector are started when needing switching, and the strip steel of original galvanizing line is directly conveyed to furnace nose through the deflection effect of first auxiliary deflector and second auxiliary deflector, and switches to annealing line through the export end of furnace nose, the utility model discloses the path of strip steel from zinc pot becomes not through zinc pot, and directly switches from the position of auxiliary deflector, realizes the efficient switching effect of galvanizing line to annealing line, and the switching device structure provided by the application is low in cost and very convenient to operate, and is very suitable as the tool of switching from original continuous galvanizing line to continuous annealing line in the steel band mixed production line of galvanizing line and continuous annealing line.

This utility model discloses an economical arc-shaped track structure for shower rooms, including a track body with an arc-shaped structure. The outer wall of the track body has an arc surface, and the inner side of the track body has a groove and a support groove for installing the shower room door frame. A lubrication groove for installing lubricating components is provided at the top of the groove. Installation components are provided at both ends inside the track body. This utility model has a simple structure, with installation components located at both ends of the track body. Compared with traditional structures, it saves on the installation components integrally formed inside the track body. The groove and support groove, combined with the lubrication groove and lubricating components, ensure that the shower room door frame is both stable and smoothly slides out after installation, eliminating the need for clamps to install the shower room door frame, saving significant structural costs, and effectively restoring the function of existing tracks, truly achieving an economical improvement.

The utility model discloses a kind of PE corrugated pipe rapid forming device, belong to forming equipment technical field, including forming device main body, the upper end of forming device main body is provided with cooling assembly, another end above forming device main body is provided with drying assembly, the upper of drying assembly is provided with dust screen, the upper end of forming device main body is provided with horizontal movement component, drying assembly and the connecting portion of dust screen are provided with convenient dismounting component, the upper end of horizontal movement component is provided with clamping component, the utility model is provided with convenient dismounting component, can conveniently dismount dust screen, clean or replace to dust screen, the structure is convenient to use, can quickly dismount dust screen, and by ejector assembly, after being convenient to remove the limiting of dust screen, it can be ejected, the utility model is provided with clamping component, can conveniently hold corrugated pipe, and structure cost is low.

The application discloses a milk frother for making delicate milk froth and relates to the technical field of milk frothing equipment. The milk frother comprises a milk froth generating system and an independent cleaning system. The milk froth generating system comprises a first three-way pipe fitting, a milk pump, a first heater and a multi-way switching valve assembly. The independent cleaning system comprises a second heater and a shunt structure of the multi-way switching valve assembly. In the cleaning mode, the high-temperature cleaning water output by the second heater is divided into a forward water flow and a reverse water flow. The forward water flow cleanses the milk pipeline. The reverse water flow flows reversely through the first heater, a filter joint and the milk pump in sequence and is finally discharged by a blow-off branch. The application realizes active aortic pulse air intake double frothing. By means of a double independent heating and bidirectional reverse flow cleaning architecture, the problems of pipeline dead angle milk scale residue and water-milk cross contamination are effectively solved.

The invention relates to the technical field of optical fiber communication, and discloses a method and a system for simultaneously realizing optical multipath interference positioning and photo-generated millimeter wave, comprising the following steps: fusing a transmitting end communication signal and a linear frequency modulation carrier to generate a communication-inductance integrated signal, and using a single laser source as the optical signal input of an IQ modulator, the IQ modulator converts the sensing integrated signal into an optical signal and transmits the optical signal through an optical fiber link; generating a mixed optical signal comprising the optical signal and a multipath interference reflected optical signal in the optical fiber link when multipath interference exists; an electric signal containing a millimeter wave communication signal and a multi-path interference sensing signal is extracted through a photoelectric detector, the time delay of a multi-path interference reflection light signal is determined based on frequency characteristics, and a multi-path interference damage node is positioned according to the time delay of the multi-path interference reflection light signal. According to the invention, the line width requirement, the structural complexity and the cost can be reduced, and accurate positioning of optical multipath interference is realized while millimeter waves are generated.

The utility model discloses a precision bearing manufacturing grinding machining table which comprises a concentric-square-shaped frame, two clamping blocks symmetrically installed at the top end of the concentric-square-shaped frame in a sliding mode, a horizontal plate installed on the left outer wall and the right outer wall of the concentric-square-shaped frame in a sliding mode and a rotating shaft installed at the bottom of the concentric-square-shaped frame below the horizontal plate in a rotating mode. The bottom end of the clamping block extends into the concentric-square-shaped frame and is fixedly connected with the top end of the lying plate, and a connecting rod opposite-pushing structure used for driving the clamping block and the lying plate to slide in the X-axis direction is installed at the top end of the rotating shaft. A bearing workpiece to be machined is placed between the two clamping blocks, the gear motor drives the rotating shaft to synchronously and reversely rotate through the two fluted discs, and then the clamping blocks are driven to move through the connecting rod opposite-pushing structure till the two clamping blocks are close to each other and clamp the bearing workpiece.

This application relates to the field of robotics, specifically to a leg structure for a robot and the robot itself. The leg structure for the robot includes: a thigh rod, comprising a power unit, a first gear, a second gear, a third gear, and a rocker arm; the first gear is fixedly mounted on the output end of the power unit; the second gear meshes with the first gear, and the third gear meshes with the second gear; the rocker arm is relatively fixed to and coaxially rotates with the third gear, the pitch circle diameter of the third gear being larger than that of the first gear; a pull rod, including a first end and a second end, the first end of the pull rod being connected to the rocker arm; and a lower leg rod, including a first connecting portion and a second connecting portion, the lower leg rod being rotatably connected to the thigh rod through the first connecting portion, the second connecting portion being connected to the second end of the pull rod, and the first connecting portion and the second connecting portion being spaced apart. By using a multi-gear structure instead of a reducer structure, the range of motion of the lower leg rod relative to the thigh rod is increased, and the leg structure is low-cost and compact.

The utility model relates to the field of seat ventilation, in particular to a novel seat air suction system which comprises a foaming part, a sealing plate and a fan, a ventilation groove is formed in the B face of the foaming part, a through ventilation hole is formed in the groove bottom of the ventilation groove, the sealing plate is connected with the foaming part and covers the ventilation groove, the sealing plate is provided with a ventilation opening, and the fan is connected to the ventilation opening. The sealing plate can comprise a felt plate and a fixing plate, the fan is connected with the sealing plate through rubber nails, the fan further comprises a machine shell, a connecting block, a clamping block and other structures, and the fan can be a vortex fan or a butterfly fan. The technical effects that effective air suction is achieved through reasonable structural design, and the seat ventilation effect is optimized are achieved.

The utility model relates to a lens dustproof structure of laser projector, including the shell that has the through -hole of front end setup, set up in the optical machine module lens in the shell still include lens ornament ring, first dustproof bubble cotton, lens support and second dustproof bubble cotton, the lens ornament ring sets up in the through -hole, the lens support sets up in the shell and is located lens ornament ring rear, first dustproof bubble cotton sets up between the front end of lens support and the rear end of lens ornament ring, the optical machine module lens is located lens support rear side, second dustproof bubble cotton sets up between optical machine module lens front end and lens support rear end, and second dustproof bubble cotton has precompression amount. The utility model structure design simple and ingenious, can guarantee and the outside is isolated to reach dustproof effect when the optical machine lens module telescopes forward or backward, production assembly simple, easy operation, structure cost is low, very suitable for popularization and application.

The application discloses a door cover lock module and a washing machine. The door cover lock module comprises a shell with a containing cavity, a bottom with a first opening; a locking piece rotatably installed in the containing cavity, the locking piece comprising a lock hook, the locking piece having a sliding groove; an elastic pressing piece, one end of which is arranged in the containing cavity, the other end of which is slidably arranged in the sliding groove, used for receiving the downward force of the top of the shell to press the locking piece, the sliding in the sliding groove being converted into the driving force for rotating the locking piece, the rotation of the locking piece locking the locking piece in the rotating direction after the lock hook extends out of the first opening to the outside of the shell; a pressing piece, one end of which is fixed to the top of the shell, the other end of which is extended and arranged in the shell to press the upper part of the elastic pressing piece, so that the other end of the elastic pressing piece is located in the sliding groove. The pressing piece of the application presses the elastic pressing piece to rotate in the sliding groove, thereby locking the door cover, and preventing the other end of the elastic pressing piece from being separated from the sliding groove, so as to guarantee the normal use of the door cover lock module.

The utility model discloses a switch subassembly, protection device and power supply detection equipment relates to switch technical field. The utility model discloses a switch button, elastic arm and sealing washer, when being pressed, pressure touch control switch, elastic arm is along the radial setting of switch button. Elastic arm and shell assembly limit cooperation, and elastic arm is pressed and generates elastic deformation to switch button, and resets switch button through elastic recovery force. The sealing washer is sleeved in the outer circumferential side of switch button, to seal the assembly clearance of switch button and shell assembly. Therefore, when pressing switch button pressure touch control switch, elastic arm can guarantee the sealing property of switch button and shell assembly's assembly clearance under the condition that switch button carries out axial deformation with switch button, improves switch subassembly's dustproof waterproof effect.

The application discloses a kind of FPC automatic pressing equipment, including upper shield, lower rack and rack internal components, rack internal components include width adjustment track, stop component, lower die lifting assembly and upper die pressing assembly, width adjustment track is located in the center of equipment and is installed in equipment big plate, stop component is located at the entrance and exit of width adjustment track, lower die lifting assembly is located below equipment big plate, upper die pressing assembly is located just above width adjustment track of lower die lifting assembly, product is input to corresponding position by width adjustment track in the application, front and rear positioning is realized by stop mechanism, lower die lifting assembly starts lifting, then upper die pressing assembly is pressed to product, product is automatically flowed to next process after pressing, product is input to corresponding position by width adjustment track, realize full-automatic online pressing, avoid that position error caused by personnel operation placement product produces pressing defect, whole process is automatic operation, reduce artificial labor, reduce production cost, work efficiency is high.

This utility model proposes a continuous production equipment for nickel-metal hydride battery electrodes, relating to the field of nickel-metal hydride battery electrode production technology. It includes a base, on which a shearing assembly and a conveying assembly are mounted, with the conveying assembly located to the left of the shearing assembly. This continuous production equipment for nickel-metal hydride battery electrodes operates by starting a first rotary motor to drive a turntable to rotate counterclockwise. The turntable drives a mounting block to rotate. When the inclined surface of the mounting block contacts a ball bearing at the bottom of a push rod, the ball bearing moves upward along the inclined surface of the mounting block. Simultaneously, the push rod drives the shearing blade upward, thus shearing the battery electrode. As the mounting block continues to rotate away from the ball bearing, the ball bearing falls under the influence of gravity, causing the shearing blade to fall until the next top block lifts the ball bearing. This achieves continuous shearing of the battery electrode while simultaneously reducing its structural complexity and cost.

This utility model discloses a waste heat recovery system for a large-scale cold storage refrigeration system, which can utilize the waste heat generated by the large cold storage in multiple scenarios, improve the waste heat recovery efficiency, and ensure stable operation. It is also compatible with the original cold storage, reducing operating costs. The system includes a hot refrigerant defrosting system for a cold air blower, a hot water defrosting system for a cold air blower, and a floor heating system. The hot refrigerant defrosting system for a cold air blower includes a cold air blower with a coil inside. The coil is connected to the return air fins, and the coil inlet is connected to the main refrigerant exhaust pipe via a refrigerant exhaust branch pipe. The main refrigerant exhaust pipe is connected to an oil separator, and the oil separator is connected to a compressor. The hot water defrosting system includes a cold air blower, a defrosting water heat exchanger, a first heat recovery water pump, a defrosting water tank, and a defrosting water pump. The floor heating system includes a floor heating heat exchanger, a second heat recovery water pump, an ethylene glycol supply collector, an ethylene glycol return collector, and floor heating pipes.

This utility model discloses a flushing nozzle, and also discloses a spray gun and a toilet with a flushing nozzle. The flushing nozzle includes a Venturi channel, a vibration zone, and a first water outlet channel connected in sequence. An air intake channel is provided in the negative pressure zone of the Venturi channel. Multiple blocking parts are provided in the vibration zone. The multiple blocking parts are distributed in sequence and at intervals around the first opening between the vibration zone and the first water outlet channel. The blocking parts are located on the water flow path from the Venturi channel to the first water outlet channel. The flushing nozzle has a simple overall structure and can complete pulse water output without the use of air pumps or other electrical components, resulting in low structural cost.

The utility model aims to provide a gas injection valve static flow test tool, which comprises a shell, a gas inlet and a gas outlet, and is characterized in that a cavity with one open end is formed in the shell, and the shell is provided with a gas inlet and a gas outlet which are communicated with the cavity; a to-be-tested valve seat, a to-be-tested valve plate, a gasket and a range limiting disc are sequentially arranged in a cavity of the shell from inside to outside; the gland is arranged at the open end of the shell and is used for pressing the range limiting disc, so that a part of the lower end surface of the range limiting disc is pressed with a part of the upper end surface of the valve seat to be tested; different lifts of the gas injection valve are simulated by adjusting the thickness of the gasket. The static flow measuring device can be used for measuring the static flow corresponding to each lift of the gas injection valve under a series of pressure differences.

The embodiment of the utility model discloses a multifunctional circuit and system, and belongs to the field of circuits. The multifunctional circuit comprises a first port, a second port, a first electric heating wire, a second electric heating wire, a first branch circuit and a second branch circuit. When the current is input from the first port and output from the second port, the current flows through the first branch, and the first heating wire and the second heating wire are heated; and when the current is input from the second port and output from the first port, the current flows through the second branch. According to the embodiment of the invention, the multifunctional circuit has multiple functions through the first branch circuit, the second branch circuit and different current flow directions, and the technical effects of reducing the structural complexity and the cost are achieved.

This invention provides a modular, lightweight, high-performance anti-vibration base, comprising: multiple base units that are sequentially assembled, each base unit including a base panel and multiple support columns located below the base panel; wherein the multiple support columns include both solid and hollow support columns; and each pair of base panels is assembled using assembly components. The modular, lightweight, high-performance anti-vibration base provided by this invention reduces the weight of the anti-vibration base while ensuring stiffness and damping characteristics, ensuring good anti-vibration performance, expanding the applicable scenarios of the anti-vibration base, ensuring consistent vibration response for large-volume bases without affecting the anti-vibration effect, and facilitating processing, manufacturing, transportation, and installation.

The present application relates to bulk material handling machinery technical field, provide a kind of automatic reversing device of hopper and material taking mechanism, wherein, disclose a kind of automatic reversing device of hopper, including two-way brake mechanism and pressure rotating mechanism, two-way brake mechanism is arranged on hopper rotating shaft and can be switched back and forth between clockwise direction brake state and counterclockwise direction brake state, pressure rotating mechanism can exert pressure on the curved surface of hopper and drive hopper to rotate around hopper rotating shaft;Still disclose a kind of material taking mechanism, including fixed steel frame, bucket wheel body, hopper rotating shaft and hopper, also include the automatic reversing device of hopper disclosed in the present application.The present application can realize complete automatic reversing, satisfy the requirement of unmanned, intelligent of whole machine equipment.

This invention discloses a black-start method for offshore wind farms using DRU-LCC-HVDC power transmission. For offshore wind farms using a DRU-LCC-HVDC power transmission system consisting of a sending-end diode rectifier unit (DRU) and a receiving-end thyristor converter (LCC), distributed energy storage units are configured on the DC bus of the converters of some offshore wind turbines. These distributed energy storage units are used to start the wind turbines and establish the grid voltage for the offshore wind farm. After voltage establishment, the LCC is put into constant DC voltage control, and the DC cable is smoothly pre-charged on the DRU side via a soft-start resistor. When the distributed energy storage wind turbines reach their cut-in wind speed, the turbines smoothly switch to power generation operation, coordinating with the LCC to regulate the HVDC voltage. In extreme cases where neither the distributed energy storage wind turbines nor the wind turbines reach their cut-in wind speed, the wind turbines that have reached their cut-in wind speed but not yet equipped with energy storage are allowed to complete DC side pre-charging before starting operation, followed by the remaining turbines starting sequentially and connecting to the grid for power generation. This method has the advantages of stable and reliable startup and strong engineering adaptability.

The invention provides a voltage control and detection circuit, a power conversion device and a charging pile, and belongs to the technical field of circuits. A detection voltage output by an operational amplifier circuit in the voltage control and detection circuit can reflect an error between a reference voltage and an output partial voltage, so that a control circuit realizes closed-loop control of the output voltage of the DC / DC conversion circuit based on the detection voltage. Moreover, the detection voltage can reflect the magnitude of the ripple voltage in the output voltage, so that the control circuit achieves ripple suppression of the output voltage. The voltage control and detection circuit has abundant functions, and can effectively avoid increasing the structural complexity and cost of the power conversion device. Moreover, the operational amplification circuit has a proportional amplification function and can amplify the voltage difference between the reference voltage and the output divided voltage, so that the sampling precision of the voltage can be ensured even if a high-resolution ADC (Analog to Digital Converter) is not used. Therefore, the dependence on the high-resolution ADC is effectively reduced.

The utility model provides a kind of folding wheelchair.The wheelchair includes front wheel, rear wheel, skeleton and handrail;The skeleton includes front wheel frame, rear wheel frame, backrest frame, seat frame and pivot assembly;The front wheel is rotatably connected on the front wheel frame, and the rear wheel is rotatably connected on the rear wheel frame;The backrest frame, seat frame, front wheel frame and rear wheel frame are linked through the pivot assembly, to change the skeleton between unfolded state and folding state;The rear part of the handrail is rotatably connected with the backrest frame through the fifth pivot;In the process of changing from the unfolded state to the folding state, the front wheel frame contacts with the handrail, to push the handrail to rotate around the fifth pivot relative to the backrest frame.In the case that there is no too much connecting rod structure between handrail and skeleton, the synchronous linkage folding of handrail along with skeleton is realized, the overall structure cost is low, the wheelchair is lightweight, and the folding operation is simple.