38results about How to "Simple and stable structure" patented technology

In a motor vehicle with an upright rear end, such as a station wagon, a van or an SUV, having a rear loading space with a roof extending over the rear loading space to the upright rear end of the vehicle and a loading opening at the rear end extending from the vehicle floor up to the vehicle roof, the roof includes a rear roof part with a pivotal support at the front end thereof so that it can be tilted upwardly to facilitate access to the loading space and a drive mechanism is provided for operating the rear roof part including a releasable coupling permitting uncoupling of the rear roof part from the pivotal support for transferring the rear roof part into an upright position in the interior of the vehicle.

The invention discloses a drilling device for geotechnical engineering investigation, relates to the technical field of geotechnical construction, and mainly aims to solve the problem that the depth of drilling rock and soil is not prone to being controlled. The drilling device comprises a fixing frame, a drill pipe and a lifting mechanism for driving a drill bit to drill, the fixing frame is composed of three supporting vertical rods in triangular distribution and side connecting rods allowing the three supporting vertical rods to be connected and fixed to one another, a fixing table plate and an installation frame are arranged on the upper sides of the side connecting rods, the lifting mechanism comprises a screw and a drilling motor, an adjusting screw is further arranged on the installation frame, an installation plate is arranged on the adjusting screw, a pressure sensor is arranged at the upper end of the installation plate, a pressing plate is arranged on the bottom wall of theadjusting screw, and the edge side of the installation plate is slidably connected to the rod wall of the installation frame. According to the drilling device for geotechnical engineering investigation, the structure is simple, stable and firm, the drilling depth can be adjusted and accurately controlled, the simpleness, convenience and rapidness are achieved, disassembly can be achieved, carryingis convenient, and the practicability is high.

The invention relates to a manufacturing method for an all-fiber temperature sensor based on fiber core mismatch attenuators, and belongs to the technical field of manufacture of optical fiber sensors. The method includes the steps that an optical fiber fusion splicer discharges electricity twice so as to conduct fusion splicing on single-mode optical fibers placed in a staggered mode, the two fiber core mismatch attenuators are formed, and then a new sensing structure is formed through processing of the optical fiber fusion splicer and an optical fiber tapering machine. Optical path differences meeting conditions can be generated through the fusion splicing structure and optical fibers, and the Mach-Zehnder interference condition is met. When external temperature, the refractive index and other conditions change, the effective optical path differences of the sensing part optical fibers change, and then a through transmission spectrum drifts. The whole structure of the sensor is easy to manufacture, and the mechanical strength and sensitivity are high; the single-mode optical fibers are adopted, cost is reduced, the influence of cross sensitivity of a traditional optical fiber sensor is avoided, accuracy is improved, and the detection result has good repeatability.

The invention relates to a railway industry and electricity integrated electric switch device with a central locking polar integrated control unit. A high-strength anti-retreating moving lock mechanism, an integrated visible lock checking expression mechanism, a closed oil immersion overload unloading double speed transmission mechanism, a double speed, rapid stopping and high-efficiency permanent magnet direct-current motor and the like are integrated to form a compact non-squeezable central locking electric switch machine, wherein the high-strength anti-retreating moving lock mechanism is composed of a ball iron box seat / a heavy-duty bearing / an upper rack moving lock rod / a short and thick tooth crest lock; a lock checking rod / a direct-acting contact expression switch / a four-head lock checking block / a spiral starting disk / an axial quick-acting ring which are flatly placed and connected by body separation form the integrated visible lock checking expression mechanism; the closed oil immersion overload unloading double speed transmission mechanism integrates a 2K-H displacement and variable level differential transmission shaft with multiple tooth differences and short teeth, a stopping output wheel shaft with an eccentric bushing hammer; the compact central locking electric switch machine which can not be squeezed, a lengthened rail brace slide plate ( base rail / switch tie) central multi-lug insulation hinge, a crank and straight linked arm and a linked switch rail and point rail form an industry and electricity integrated squeezable and non-squeezable unit by means of a zero-clearance sleeved elasticity group pin and a double-port microgap hinge, low speed turnout unitization of single opening and single action, double slip separated action, hump double action and the like is achieved, a intermediate speed and high speed turnout switch rail and a point rail are synchronous in sections and combined with combination unitization to form the safe, reliable, advanced, adjustment-free, protection-free and industry and electricity assembled power-driven turnout of the whole transmission and whole spreading central locking electrode control device.

The invention relates to the technical field of food production equipment and provides food packaging equipment. The food packaging equipment comprises a feeding system. The feeding system is composedof a storage device, a distribution weighing device and a lifting device. A vacuum packaging system is arranged on one side of the feeding system. The vacuum packaging system comprises a machine body. A rotatable workpiece tray assembly is arranged above the machine body. The outer side of the circumference of the workpiece tray assembly is provided with a discharge device, an automatic bag feeding device, a bag opening device and a shaping device which are matched with the workpiece tray assembly. One side of the workpiece tray assembly is further provided with a rotatable vacuum pumping sealing device. The machine body is internally provided with a driving device used for driving components. The driving device is provided with a single main transmission shaft and controls operation of the components synchronously through a cam and a connecting rod structure. The machine body is further provided with an on-off control device. The food packaging equipment is provided for effectively solving the problems that existing equipment is complex in structure, low in production efficiency and confusing in packaging specification.

The invention discloses a fireproof cable, and relates to the technical field of cables. The fireproof cable comprises a conductor, wherein a wrapping tape, a metal shielding layer, a fireproof insulating layer, an armor layer and an outer sheath are sequentially arranged outside the conductor. The fireproof insulating layer comprises an inner lining layer, an inorganic mineral substance layer andan outer lining layer, and the inner lining layer, the inorganic mineral substance layer and the outer lining layer are sequentially arranged from inside to outside, and the thickness ratio of the inner lining layer to the inorganic mineral substance layer to the outer lining layer is 3:1:2. The inorganic mineral substance layer is powdery and is clamped between the inner lining layer and the outer lining layer, and meshes are arranged on the surfaces of the inner lining layer and the outer lining layer. The conductor is protected through the wrapping tape, the metal shielding layer, the fireproof insulating layer, the armor layer and the outer sheath, and the wrapping tape, the metal shielding layer, the fireproof insulating layer, the armor layer and the outer sheath are sequentially arranged from inside to outside, and the conductor has stable structure. During use, the cable can be buckled, and the cable has strong adaptability. When a fire hazard happens, the inorganic mineral substance layer in the fireproof insulating layer plays a main isolation role, and the inner lining layer and the outer lining layer play a role in locking the inorganic mineral substance layer, so thatthe flow of the inorganic mineral substance layer is reduced, and the stability of the fireproof performance of each position of the whole cable is ensured.

The invention discloses an automatic overturning machine. The automatic overturning machine comprises a control system, a rack, an overturning mechanism, an input mechanism and an output mechanism, wherein the overturning mechanism is arranged on the middle part of the rack; the input mechanism and the output mechanism are respectively arranged on the two sides of the overturning mechanism; the overturning mechanism comprises an overturning motor, an overturning shaft and a clamp group which is provided with clamps; the clamp group is fixed with the overturning shaft; the overturning motor isconnected with the overturning shaft; the input mechanism and the output mechanism have the same drive component; the drive component comprises a drive motor, a drive shaft and a belt mechanism; the drive motor is connected with the drive shaft; the drive shaft drives the belt mechanism; the belt mechanism is arranged below the clamps; and the control system controls the overturning motor and thedrive motor to rotate. The automatic overturning machine provided by the invention has a simple and firm structure and flexible operation, is convenient to disassembly and assembly, has high automation degree and can improve the production efficiency greatly.

The invention discloses a necking assembly and a necking device. The necking assembly comprises a cylindrical base, a driving mechanism and a necking mechanism, wherein the driving mechanism is arranged in the cylindrical base, the necking mechanism is inserted in the cylindrical base through one end of the cylindrical base and is connected with the driving mechanism, a necking part is arranged atone end of the necking mechanism, and a horn mouth shape is defined by the necking part so as to be used for accommodating a battery shell to be subjected to necking; and the driving mechanism is used for driving the necking mechanism to do reciprocating motion relative to the cylindrical base in the axial direction of the cylindrical base so as to enable the necking part to be elastically shrunkor elastically opened. The assembly is simplified and stable in structure, the necking operation process is simple and rapid, a plurality of molds do not need to be adjusted, the phenomenon that necking is conducted before misalignment of the molds so as to cause necking errors and other problems is avoided, so that the necking of the battery shell can be realized quickly, the necking efficiencyof the battery shell is improved, and the yield of batteries is further improved.

The invention relates to the field of kitchen ware, and in particular relates to a combined range hood structure. The combined range hood structure comprises an oil fume drainage shade, an oil fume drainage channel and a supporting frame, wherein the supporting frame comprises a fixed board, a lower plug board and an upper plug board; the oil fume drainage shade is provided with an inlet and an outlet; the outlet of the oil fume drainage shade is communicated with one end of the oil fume drainage channel; the other end of the oil fume drainage channel is communicated with a through port formed in the fixed plate. The combined range hood structure is simple and stable in structure, and convenient to dismount and mount.

The invention relates to a head-mounted acupoint massage device. The problems that an existing head massager needs to be held by a user to massage the head autonomously, meanwhile, the massage mode issingle, and secondary fatigue is likely to be caused to people in the massage process are solved. According to the technical scheme, the head-mounted acupoint massage device comprises a head sleeve and a massage fixing sleeve, a fixing disc is connected to the lower end of the massage fixing sleeve, a lifting sliding column is coaxially and rotationally connected to the fixing disc, a rotating gear ring is coaxially and fixedly connected to the upper end of the lifting sliding column, an oval sliding rail is arranged on the lifting sliding column, a lifting sleeve is coaxially and verticallyconnected to the lifting sliding column in a sliding mode, a lifting sliding ball matched with the oval sliding rail is rotationally connected to the inner wall of the lifting sleeve, a plurality of first-stage connecting rods are rotationally connected to the lower end of the fixing disc, a second-stage connecting rod is rotationally connected to the other end of each first-stage connecting rod,a third-stage connecting rod is rotationally connected to the middle of each second-stage connecting rod, the other end of each third-stage connecting rod is rotationally connected with the lifting sleeve, and a massage wheel is rotationally connected to the lower end of each second-stage connecting rod. The head-mounted acupoint massage device is simple in structure and high in practicability.

The invention provides a rotary base. The rotary base comprises a base plate, a tray and a bearing arranged on the base plate, wherein a positioning shaft used for limiting the position of the bearing is arranged at the central position of the base plate; the bearing is sleeved on the positioning shaft; one end of the bearing is connected with the base plate; the tray is placed on the bearing and is connected with the other end of the bearing; a first annular flange which is coaxial with the positioning shaft and is used for balancing the tray is also arranged on the surface, opposite to the tray, of the base plate; a second annular flange which is used for balancing the tray and is coaxial with the positioning shaft is arranged on the surface, opposite to the base plate, of the tray; the diameter of the second annular flange is greater than or smaller than that of the first annular flange; the end surfaces of the first annular flange and the second annular flange are in uniformly distributed multi-point concave and convex structures. The bearing can be a radial bearing or a thrust bearing; the tray can support a lighthouse; according to the rotary base, a small bearing can play the role of a large bearing, so that the manufacturing cost is reduced; the rotary base has a simple and stable structure, few components and low manufacturing cost, and can drive the lighthouse to rotate at 360 degrees smoothly.

A decorative net light structure includes a light string and a plurality of light diffusion protective covers. The light string includes two circuits extended parallel to each other, and a plurality of LED light balls arranged spaced apart from each other in an equal distance and connected between the two circuits, and extending roundabout to form a plurality of sections of equal length and arranged in an opposite direction, thereby allowing lighting spots of each section to correspond to nodes of the next section. In addition, the light diffusion protective covers are used to cover and secure the lighting spots and nodes corresponding to each other. Accordingly, the decorative net light structure requiring a simple manufacturing process and having a firm structure can be achieved while being able to protect the light sources and to provide light diffusion effect at the same time.

Disclosed is an infrared remote control switch. An infrared coded signal module is connected with a microcontroller through an infrared receiving module and an amplification and shaping module, the output end of the microcontroller is connected with a switch control module, the input end of the switch control module is connected with a power supply, the power supply is connected with the infrared receiving module through a voltage reducing power supply, and the power supply is a 220 V alternating current power supply. According to the infrared remote control switch, infrared coded signals are received through the infrared receiving device, therefore, a switch circuit is controlled to be powered on and off, the circuit is simple, the structure is simple and firm, reliability is high, damage is not prone to happening, and the service life is long.

The invention discloses a distance resolution implementation method for continuous wave sodium temperature and wind measurement laser radars. Laser intensity coding meeting a pseudorandom M sequence is performed on high power continuous laser; and detection height resolution of continuous sodium temperature and wind measurement laser radars can be realized by utilizing a synchronous acquisition device and inversion method, and therefore, key technical problems of the improvement of complex impulse type sodium temperature and wind measurement radars into the continuous wave sodium temperature and wind measurement laser radars with stable and concise structures can be solved.

The invention discloses a cylinder cover system capable of adjusting the compression ratio for an engine. The cylinder cover system comprises a main cylinder cover, a movable cylinder cover, an air inlet valve, an air exhausting valve and an acting part, wherein the main cylinder cover is connected with a piston cylinder body and provided with an air inlet passage and an air exhausting passage; the movable cylinder cover is arranged in the main cylinder cover and provided with a secondary air inlet passage and a second air exhausting passage corresponding to the air inlet passage; the space between the movable cylinder cover and a piston in the piston cylinder body is a combustion chamber; the air inlet valve and the air exhausting valve are arranged in the movable cylinder cover and used for sealing or opening the secondary air inlet passage or the secondary air exhausting passage; the acting part is connected with the movable cylinder cover and acts to drive the movable cylinder cover to move vertically. The compression ratio can be changed without moving the whole cylinder cover, and an original air distribution system does not need to be changed.

The invention relates to a conjoined frame, which comprises an outer frame and an inner panel, wherein the outer frame is provided with a central through hole and peripheral side surfaces around the central through hole; the inner panel is provided with at least one penetrating hole which is arranged at intervals; the inner panel is in clamped connection to the peripheral side surfaces; and the penetrating holes are exposed through the central through hole. Preferably, clamping claws are arranged at the inner sides of the peripheral side surfaces, and the side surface of the inner panel is provided with fasteners which are in clamped connection with the clamping claws. Guide tongues are arranged at the inner sides of the peripheral side surfaces towards the direction of the inner panel, the side surface of the inner panel is provided with reinforcing bars which are bent to extend towards the direction of the central through hole, and the reinforcing bars are inserted between the inner sides of the peripheral side surfaces and the guide tongues and the guide tongues supports against the inner panel. The supporting ribs are arranged at the inner sides of the peripheral side surfaces and support against the inner panel. At least part of the edge of each penetrating hole is provided with a clamped connection surface. The circumference of each penetrating hole is provided with positioning holes. The conjoined frame disclosed by the invention has the advantages of smart design, concise structure, stability, firmness, reduced production cost, wide application scope and suitability for large-scale popularization and application.

The invention provides an F25mm high-resolution and low-distortion half-group mobile industrial lens and a working method thereof. The F25mm high-resolution and low-distortion half-group mobile industrial lens includes a lens barrel assembly and an optical system arranged in the lens barrel assembly. The optical system includes a front group of lenses, a diaphragm, a rear group of lenses, a compensation group of lenses and an imaging plane arranged in the direction from the incidence of light to the imaging plane. The front group of lenses is composed of a negative crescent lens A-1 and a first cemented group of lenses formed by closely connecting a negative crescent lens A-2 and a negative crescent lens A-3. The rear group of lenses is composed of a second cemented group of lenses formedby closely connecting a biconcave lens B-1 and a biconvex lens B-2, and a biconvex lens B-3. The compensation group of lenses is composed of a third cemented group of lenses formed by closely connecting a biconvex lens D-1 and a biconcave lens D-2. The eight lenses in the front group, the rear group and the upper part of the compensation group of the industrial lens are made of an optical glass material with high refractive index and low dispersion, so that the MTF of the lens can meet the relational expression 150lp / mm>0.3.

The invention discloses a photoacoustic spectrometry detection chip sensor and a manufacturing method thereof. The sensor includes: a vibration transduction structure, an optical waveguide and a phaseshift waveguide grating. The optical waveguide is arranged on the vibration transduction structure. The optical waveguide is a three-layer waveguide layer and comprises a substrate, a light guide layer and a cladding layer. The vibration transduction structure is used as the substrate of the optical waveguide, the light guide layer of the optical waveguide is rare earth doped silicon dioxide, thecladding layer of the optical waveguide is silicon dioxide, and the phase shift waveguide grating is etched in the light guide layer of the optical waveguide. The method comprises the following steps: generating an optical waveguide on a vibration transduction structure by adopting a mocvd process; etching a phase shift waveguide grating on the light guide layer of the optical waveguide by adopting a UV photoetching technology. Integration of the sensor and the transduction structure is achieved, the structure is simple and firm, manufacturing is easy, integration with other systems is facilitated, and the integration problem of a traditional optical fiber distributed sensing system can be effectively solved.

The invention discloses an installing structure of a high-efficiency air filter. The installing structure comprises a guide flow cover and the high-efficiency air filter, wherein the guide flow cover guides the airflow into a motor cavity; the high-efficiency air filter can be embedded into an installing port in a matching manner; the installing port is of a cylindrical structure forming a section of linear cutting edge; two sliding grooves are arranged on the linear cutting edge; a bayonet structure can be arranged on the linear cutting edge in a front-rear sliding manner; an elastic component is arranged between the bayonet structure and the linear cutting edge so as to enable the bayonet structure to extend outwards; and the shape of a shell of the high-efficiency air filter is the cylindrical structure which corresponds to the installing port and is provided with the linear cutting edge. The installing structure disclosed by the invention has the advantages that the anti-leakage structure of the high-efficiency air filter is adopted, the bayonet structure is designed into a split type sliding structure, and the position can be correspondingly changed according to the installation or not of the high-efficiency air filter; the structure is simple and stable, the use is convenient, the correct installation of the high-efficiency air filter can be effectively guaranteed, and the motor can be prevented from being damaged due to entering of fine dust.

The invention belongs to the technical field of medical instruments, and particularly relates to a brain drainage bottle hanging device and a using method thereof. The brain drainage bottle hanging device comprises a support rod, hooks and a correction bar, and scales are arranged on the outer wall of the support rod; the support rod comprises multiple sliding rods which are connected in a slidable sleeving mode, and the joint of every two adjacent sliding rods is provided with a button opening and an elastic button, wherein the button opening is formed in the outer-side sliding rod and is a through hole, one end of the elastic button is arranged on the inner-side sliding rod, and the other end of the elastic button extends towards the outer side of the inner-side sliding rod and can penetrate through the button opening to be clamped on the outer-side sliding rod in a buckled mode; a fixing clamp is arranged at the upper end of the support rod and provided with the hooks; a bedside rail clamp is arranged on the sliding rod on the outermost side; the correction bar is of a telescopic structure and is perpendicularly connected with the support rod. According to the brain drainage bottle handing device, the height of a drainage bottle can be accurately adjusted, movement and storage are convenient, the size is small, and the device can be used by being matched with an existing infusion rod or a bedstead.

The invention provides a stepless adjusting type fixing structure for a wall panel. The structure comprises a keel, a connecting piece and a panel, the keel is vertically arranged and fixedly connected to a wall, and the panel is mounted on the keel through the connecting piece; and the keel is vertically arranged, and at least one sliding groove extending in the vertical direction is formed in each side face of the keel. The connecting piece is provided with a sliding fastening structure, and the connecting piece is installed and fixed in the sliding groove in the front face or the sliding grooves at the two sides of the keel in a sliding manner through the sliding fastening structure. The connecting piece is further provided with a limiting plate parallel to the wall. A limiting groove is formed at the side edge of the panel; and the limiting plate of the connecting piece is inserted into a limiting groove of the panel so that the panel can be fixed to the keel. The stepless adjusting type fixing structure has the advantages of being simple and firm in structure and rapid, simple and convenient to mount and dismount, can be flexibly matched with wall panels of various different specifications and sizes, and meets the mounting requirements of different engineering scenes.

The invention relates to the field of tools, in particular to a rib frame mounting rib distance control adjusting device. The device comprises a telescopic supporting rod assembly and caliper devices;the telescopic supporting rod assembly is composed of an inner supporting rod and an outer supporting rod arranged outside the inner supporting rod in a sleeving mode, the inner supporting rod and the outer supporting rod are coaxially arranged, and the inner supporting rod can move in the outer supporting rod in the axial direction; caliper devices are arranged at the two ends of the supportingrod assembly pipe in the axial direction; and each caliper device comprises a caliper opening and a spring piece, the caliper opening is fixed to the supporting rod assembly, and the spring piece is fixed into the caliper opening. According to the device, the structure is simple and stable, and the use is convenient; the rib frame mounting efficiency can be effectively improved; and the accuracy of rib frame mounting distance control can be effectively improved.

The invention provides a gear shaft. The gear shaft comprises a first shaft body, a second shaft body and a third shaft body; the upper end and the lower end of the first shaft body are separately fixed with the second shaft body and the third shaft body by welding; and an anti-sliding part is further arranged at the upper end of the second shaft body. The gear shaft is simple and firm in structure, and gear mounting is firm.

The invention discloses a spectral measurement device based on a reflective random diffraction sheet and a test method. The spectral measurement device comprises the reflective random diffraction sheet, a collimation focusing element and an optical detector, wherein the reflective random diffraction sheet comprises a substrate and a diffraction grating unit plated with a reflective film; the collimation focusing element is located at one side of the reflective random diffraction sheet, incident light passes through the collimation focusing element to become parallel light, the parallel light illuminates the reflective random diffraction sheet and is reflected by the reflective random diffraction sheet to obtain zero-level diffracted light and first-level diffracted light, the zero-level light is converged after passing through the collimation focusing element, and the first-level diffracted light forms a speckle pattern after passing through the collimation focusing element; and the optical detector is located at the side, away from the reflective random diffraction sheet, of the collimation focusing element and is used for receiving the speckle pattern. The device is high in spectral resolution, high in light energy utilization rate, compact in structure and small in size.

The invention discloses a pressing device for a weaving machine in textile industry. The device comprises a body, bases, wire wheels, connecting seats, connecting blocks, pressing plates and a bedplate, wherein the bases are fixedly arranged on the body through first screws; the wire wheels are arranged on the body in a rotating mode and positioned on one side of one base and one side of the other base; the connecting seats are provided with grooves and fixedly arranged on the bases through second screws; the connecting blocks are fixedly arranged on the connecting seats through third screws; the pressing plates are provided with strip through holes and fixedly arranged on the connecting blocks through fourth screws; the bedplate is fixedly arranged on the body; the connecting blocks are fixed by the third screws through notches tightly pressed on the grooves; and the bedplate is positioned between the two bases arranged in opposite directions. The pressing plates are fixedly and tightly pressed on the upper surface of the bedplate through the bases, the grooves and the connecting blocks, so that the aim of pressing cloth is fulfilled. The device has a simple and stable structure, a good pressing effect and positive significance and is convenient to install and replace.

The invention relates to a drawer structure with the functions of a left and right slide mouse and a keyboard. The drawer structure comprises two enclosing boards and a support frame respectively sliding along the length directions of the two enclosing boards, wherein the support frame is formed by two side boards, a bottom board, a rear board and a front baffle board opposite to the rear board; a clapboard is arranged at the upper end of the bottom board; and a mouse board capable of sliding is arranged at the lower end of the bottom board. The drawer structure is simple in structure and attractive and elegant in appearance, and is also convenient to install or uninstall, so that the labor intensity of a worker is greatly alleviated and the working efficiency is improved; due to the movable mouse board, the problem of the placement position of the mouse is solved; meanwhile, due to the design of a dual-layer drawer, the space utilization ratio is greatly improved; owing to the bending design and the waist-shaped hole design of the clapboard, the clapboard can be more conveniently and flexibly opened and closed and articles are also more conveniently and flexibly stored; the front baffle board can meet the requirements on the depth of a groove where hands types and the medical 6061 standard; and owing to the seamless design of the closed front baffle board and a bearing board, the injury caused by a hand or finger accidentally stretching can be avoided, and the safety is enhanced.

The invention discloses a crawler-type all-terrain electric chair, which comprises a crawler chassis, crawlers and a seat; the seat is installed on the crawler chassis, the left side and the right side of the crawler chassis are of trapezoidal framework structures, the advancing ends of the trapezoidal framework structures are bevel edges, the retreating ends of the trapezoidal framework structures are straight edges, the four corners of each trapezoidal framework structure are chamfered into circular arcs, and the crawlers are installed on the trapezoidal framework structures on the two sides of the crawler chassis. The crawlers are adopted for driving, and the crawlers are long, wide and large in grounding area, so that the crawlers can stably run on potholes, low, soft, soil, ice and snow grounds. The advancing ends and the retreating ends of the crawlers are both in a large arc shape, and the seat can be driven to easily cross a roadblock with a length of 15cm or below no matter the crawlers advance or retreat; and the grounding straight part of the crawlers is long enough, so that the electric chair can be operated to go backward to climb stairs and steps or go forward to go downstairs and stairs.

The invention discloses a road safety anti-glare panel. The road safety anti-glare panel comprises a base, an anti-glare panel body, reflective strips, a solar power storage system, LED lamp strips and light sensors; the anti-glare panel body is installed on the base and formed by sleeving and splicing a plurality of panel body assembling units, each panel body assembling unit is provided with anupper interface and a lower interface, the bottom of the anti-glare panel body is provided with a boss, and the boss is internally provided with a screw hole; the panel body assembling units are provided with the reflective strips, the panel body assembling units at the topmost portion and the bottommost portion are provided with the LED lamp strips, and the light sensors are installed on the panel body assembling unit at the topmost portion; the top of the anti-glare panel body is provided with a panel top cover, the panel top cover is provided with the solar power storage system, and the solar power storage system comprises a solar panel, a storage battery, a supporting frame and a fixing foot plate. The road safety anti-glare panel is simple and firm in structure, the solar power storage system and a sensing light emitting system are arranged, the service life of the road safety panel is prolonged, and the safety of vehicles running on a highway is improved.

The invention provides a urine sampling device for urinary surgery, and solves the problems that in the existing urine sampling process, when sampling is carried out through a urine receiving cup, urine is splashed to the outside and adheres to the hand, and when the urine is poured out through the urine receiving cup or the urine is shaken, the urine pollutes a pipe body; comprising a supporting seat, a urine permeating hole is formed in the upper end of the supporting seat, the upper end of the supporting seat is fixedly connected with an upper support, the upper end of the upper support is fixedly connected with a protective cover, the rear end of the upper support is rotationally connected with a rotating crank arranged between the supporting seat and the upper support, and the other end of the rotating crank is connected with a rotating tray which is provided with a urine receiving cup. The upper end of the upper support is fixedly connected with a limiting sleeve coaxially arranged on the outer side of the rotating crank, the limiting sleeve is arranged in the protective cover, the upper end of the rotating crank is provided with a rotating sliding rail, and a rotating pin plate is connected between the limiting sleeve and the rotating sliding rail in an up-down sliding mode; the device is exquisite in structure and has very high practicability.

Provided is a proximity switch device. A sensitive coil is connected with the input end of an oscillator through a wire. The output end of the oscillator is connected with a relay set through a triode amplifier. A magnetic field is formed at the end of the sensitive coil. According to the proximity switch device, the sensitive coil senses the magnetic field to generate electric energy, the electric energy is transmitted to the oscillator through the wire, the oscillator is connected with the relay set through the triode amplifier, and the switch is controlled to be opened or closed by switching on or switching off the relay. The whole proximity switch device is simple and firm in structure, high in reliability, not prone to damage and long in service life.