71results about How to "Easy to assemble and replace" patented technology

In at least one embodiment, optical systems include a lens system assembly, a spectral filter material and a pixel array configured such that small, distant light sources can be reliably detected. In at least one embodiment, the optical systems provide accurate measurement of the brightness of the detected light sources and identification of the peak wavelength and dominant wavelength of the detected light sources. In at least one embodiment, the optical systems provide improved ability to distinguish headlights of oncoming vehicles and taillights of leading vehicles from one another, as well as from other light sources.

The invention relates to a power transmission line operation tool, in particular to a foreign matter removing operation tool for a power transmission line. The foreign matter removing operation tool comprises a lifting mechanism, an electric saw removing mechanism and an electric heating removing mechanism, wherein the lifting mechanism is overlapped with a robot body; the electric saw removing mechanism and the electric heating removing mechanism are arranged at the upper part of the lifting mechanism; and the lifting mechanism drives the electric saw removing mechanism or the electric heating removing mechanism to move up and down, so that work switching between the electric saw removing mechanism and the electric heating removing mechanism is achieved. By a modular design, assembly and replacement are facilitated; flammable and cuttable foreign matters on the power transmission line are removed; and the application range is wide.

The invention relates to a cell culture module and a cell culture system. The cell culture module comprises a sealed body, a culture solution cavity and a cell cavity, a sealing stopping block and hollow fiber yarns, wherein the sealed body is communicated with the outer side through a culture solution inlet, a culture solution outlet, a cell sap inlet and a cell sap outlet; the culture solution cavity and the cell cavity are located in the body; the culture solution cavity comprises a culture solution cavity communicated with the culture solution inlet and a culture solution cavity communicated with the culture solution outlet, which are independent; the cell cavity is communicated with the cell sap inlet and the cell sap outlet; the sealing stopping block is used for separating to form the cell cavity and the culture solution cavity; the hollow fiber yarns are arranged on walls of the cell cavity and are provided with micro-pores which do not allow cells to pass; the hollow fiber yarns penetrate through the sealing stopping block; two ends of the hollow fiber yarns are communicated with the culture solution cavity located at a culture solution inlet end and the culture solution cavity located at a culture solution outlet end respectively. The cell culture system comprises a cell culture chip and can be used for culturing various cells.

The invention relates to a novel permanent magnetic synchronous motor, which is mainly applied to high-energy-consumption industries such as iron and steel, electrical power, petrochemical engineering, machinery and the like. The novel permanent magnetic synchronous motor mainly comprises a stator and a rotor assembly, wherein the rotor assembly comprises a rotating shaft, an inner lining sleeve is fixedly connected in the middle part of the rotating shaft through a flat key, the outer side of the inner lining sleeve is fixedly connected with permanent magnet steel and a shaft sleeve, the shaft sleeve is divided into a plurality of blocks which are fixedly connected with the inner lining sleeve through fastening connecting elements, gaps are arranged between the shaft sleeve cutting blocks divided by the shaft sleeve, permanent magnetic steel is fixedly embedded in the gaps, the permanent magnetic steel can be set into four blocks, six blocks or eight blocks according to the step number of the motor, and the fastening connecting elements can adopt screw bolts and splayed pins. The novel permanent magnetic synchronous motor uses permanent magnets for replacing electric magnetic excitation magnetic poles, realizes the brushless structure, reduces the size of a rotor, omits a magnetic excitation DC power supply, and greatly improves the efficiency of the motor, and the power factor of the novel permanent magnetic synchronous motor is greatly higher than the power factor of an asynchronous motor.

The invention discloses an environment-friendly sewage treatment device, which belong to the technical field of sewage treatment, the problems that when sewage treatment is carried out, impurity filtration cannot be carried out step-by-step , clogging is easily generated, a grating plate is not easy to replace and impurities are not easy to clean are solved. Technical key points are that: the device is characterized by comprising a sewage treatment tank and a filter grating plate, the upper side of one end of the sewage treatment tank is connected with a water inlet pipe; a water outlet pipe is connected below one end of the sewage treatment tank; a filtering grating plate is mounted in the sewage treatment box; the filter grating plates are provided with filter holes, the filter grating plates divide the interior of the sewage treatment box into a plurality of filter cavities, the filter cavities are internally provided with sludge discharge assemblies, and by arranging the drawing type filter grating plates, sewage can be conveniently filtered step by step, the filter grating plates can be conveniently assembled and replaced, and the operation is convenient and fast; impurities and sludge can be conveniently pumped out through a blow-off pipe, impurities attached to the surface of the filtering grating plate can be conveniently scraped away, and filtering holes are preventedfrom being blocked.

The invention discloses a bridge deck steel-plastic body expansion device belonging to the technical field of bridge construction. The bridge deck steel-plastic body expansion device comprises a roadway expansion device and a sidewalk or a guardrail expansion device, a cross gap supporting structure forms a long groove shape steel structure on an expansion gap, a steel-plastic elastomer is arranged in the long groove shape steel structure and is welded with the long groove shape steel structure into a whole. Two sides of the steel-plastic elastomer are respectively provided with a sideboard, and a reinforcing steel bar is connected between the sideboard and a stop board; force bearing boards are evenly arranged between the stop boards on two sides; an elastic strip is connected between the head and the tail of two adjacent force bearing boards; and spaces formed by sideboards on two sides, the stop board, the force bearing boards and the elastic strip are filled with thermoforming artificial rubber. The bridge deck steel-plastic body expansion device has reasonable design, simple structure, convenient assembly and replacement, long service life, and water, dust and shock prevention, can satisfy normal displacement deformation requirement of a girder, is comfortable to travel and does not jump.

The invention discloses a saw web spindle box assembly and a mining boulder strip machine. The mining boulder strip machine comprises a rack component and a saw web spindle box assembly, wherein the saw web spindle box assembly comprises a box body, a box cover and a spindle; the box cover is moveably arranged on the box body in a locked manner; the box body has a box side wall arranged opposite to the box cover; a plurality of saw webs are mounted in parallel on the spindle; the spindle extends in a direction perpendicular to the box side wall inside the box body; one end of the spindle is rotationally mounted on the box side wall; a tail base component allowing the other end of the spindle to be moveably inserted and positioned is arranged on the box cover. According to the scheme of the invention, the spindle is smartly mounted on the spindle box which is unique in design, the spindle can be stably and reliably fixed in a mode that two ends are supported, the stability of the saw webs in operation can be ensured, and a plurality of saw webs of any sizes can be arranged on the spindle according to practical demands. Due to design of the moveable box cover, the saw webs can be easily replaced and assembled, properties and practicability of the saw webs can be ensured, the working efficiency can be finally improved, and the production benefits can be increased.

The invention discloses an embedded bandage seat frame sofa. The sofa comprises a pedestal main frame and a backrest frame, and the backrest frame is vertically arranged on a side edge frame of the pedestal main frame; the sofa also comprises a bandage seat frame which can be detachable, embedded and positioned on the pedestal main frame. The sofa adopts a separated type structure, and a projecting part of the inner side of a beam on the bandage seat frame is utilized to be dismounted and embedded into a notch of the backrest frame. At the same time, a groove of a side baffle of the pedestal frame is used for being matched with the bandage seat frame so as to achieve an embedded combination of the bandage seat frame of the sofa. Air permeability and comfortable degree of the sofa are ensured, and at the same time, simple, convenient and feasible assembly and replacement are achieved.

The invention relates to an anti-shear combined rammer which is characterized by comprising at least one layer of first rammer bodies, wherein the first rammer bodies are vertically stacked, and a second rammer body is arranged at the top of the first rammer body on the uppermost layer. The first rammer body on the uppermost layer is connected with the second rammer body through a connecting bolt, and vertical through holes are formed in the first rammer bodies and the second rammer body. A lifting lug is arranged at the top of the second rammer body, bosses are arranged at the tops of the first rammer bodies and the second rammer body, and grooves are formed in the bottoms of the first rammer bodies and the second rammer body. The first rammer body the uppermost layer and the second rammer body, as well as every two adjacent first rammer bodies, are matched and assembled with each other through the bosses and the grooves. The anti-shear combined rammer can meet the demand of different levels of rammers in the current dynamic compaction construction and can avoid the problem that the connecting bolt is damaged by shear force as the center of gravity of the rammer is off-center. The anti-shear combined rammer has the advantages of simple replacement operation, low cist and convenience in transportation.

The invention discloses a rapid assembly and high-precision positioning target base for robot calibration. The rapid assembly and high-precision positioning target base for robot calibration comprisesa mounting base, a lower base, an upper base, a first magnet and a second magnet. The mounting base is mounted on a robot base or an extension plate. The upper base is matched with the lower base. The corresponding position of one side end surface of the upper base is provided with a concave cavity for embedding a second magnet. Positioning holes are formed, wherein the positioning holes and positioning bosses are equal in quantity, matched in shape and in one-to-one corresponding with each other in position. The other lateral side is used for embedding a target. The rapid assembly and high-precision positioning target base has the beneficial effects that the rapid assembly and high-precision positioning target base is applied to visual calibration of a robot, the target base is mounted on the robot base or the extension plate; and in the calibration experiment process, a target which needs to be replaced can be quickly and conveniently replaced without repeatedly tightening threads,the working difficulty is low, a large amount of time is saved, the target angle adjusting effect is achieved, and the target posture adjusting time is reduced.

The invention belongs to the field of structure safety protection of marine engineering, in particular relates to an FRP (Fiber Reinforce Plastic) and steel board combined type offshore collision preventing device, and aims at solving the problem of safety protection of an offshore structure. The device is formed by assembling a plurality of basic collision preventing units around the protected structure, wherein each basic collision preventing unit is in a shape of a sector cylinder and comprises an FRP housing, a corrugated steel plate corrosion preventing structure, an S-shaped steel plate collision preventing structure and a propping cover; the corrugated steel plate collision preventing structure and the S-shaped steel plate collision preventing structure are embedded into the FRP housing; the FRP housing is manufactured through FRP material, and the inside of the FRP housing is hollowed out and divided into an outer side and an inner side which do not communicate; the corrugated steel plate collision preventing structure can be embedded into the outer side, and the S-shaped steel plate collision preventing structure can be embedded into the inner side. With the adoption of the device, the problem of safety protection of the offshore structure can be solved; the corrosion resistance is high while the energy absorbing effect is good, so that the later maintenance cost can be decreased, and the offshore structure can be protected for a long term, and as a result, the offshore work and the assembling and replacing can be conveniently carried out.

The embodiment of the invention discloses a mobile electric operation tool for operating a switch conveniently. The mobile electric operation tool comprises a main shell body, a base, a first slidinggroove, a first sliding rod, a connecting plate, a second sliding rod, a second sliding groove, a connecting block, a rubber sucking disc, a handle, an electromotor switch, a placement shell, a piston, a storage battery, an electromotor, a first turntable, a first fixing shaft, a connecting rod, a second fixing shaft, a second turntable, a fixing plate, a rotating shaft, a fixing seat, a sleeve head, a fixing bolt, an insulating rubber block and a straight clamping slot. The mobile electric operation tool for operating the switch conveniently is simple in structure and novel in design, the switch is automatically regulated, directly touching with hands to operate the switch by a worker is avoided, the potential safety hazard is reduced, the operation safety of the worker is guaranteed, meanwhile, the working intensity of the worker is reduced, and the mobile electric operation tool for operating the switch conveniently is favorable for use, can conveniently dismount the sleeve head under the matching action of the arranged fixing seat and the fixing bolt, and is convenient to use.

The invention discloses a modularized steel-concrete combined bridge model and a method for a bridge damage identification test, comprising a bridge abutment base, a bridge support, a steel main beam,a cross beam, a concrete bridge deck, a connecting device between the steel main beam and the cross beam, a connecting device between the steel main beam and the concrete bridge deck, a concrete bridge deck connecting device and a control device for steel main beam damage cracking, wherein the bridge abutment base and the bridge support are used for supporting the steel-concrete combined bridge and simulating different boundary conditions; the single steel main beam is connected with the concrete bridge deck through the connecting device between the steel main beam and the concrete bridge deck; the concrete bridge deck connecting device is used for simulating a hinge joint between the steel-concrete combined beam and the concrete bridge deck; the cross beam and the connecting device between the steel main beam and the cross beam are used for simulating the traverse connection of the steel main beams in the steel-concrete combined beams; the control device for steel main beam damage cracking is used for simulating the steel main beam damage of web cracking at different positions and different heights and the damage of different degrees of the lower flange plate of the steel main beam.

The invention provides a cleat matched type fairlead. The cleat matched type fairlead comprises a fixing frame and a fairlead seat body arranged in sequence. A fairlead wheel assembly is rotationallyarranged on the fairlead seat body. A cleat baffle is arranged beside the fairlead wheel assembly and fixed to the fairlead seat body in a sliding mode. A clamping frame is arranged on one side of thefairlead seat body, and a pressure rod is rotationally arranged inside the clamping frame. A pressing wheel is rotationally arranged on the pressure rod. A groove is formed in the fairlead seat body.A sliding rod is arranged on the outer side of the cleat baffle, and the bottom of the sliding rod is fixed in the groove through a sliding block in a sliding mode. A winding wheel is arranged in thefixing frame, and a compressor rod is rotationally arranged at the top of the fixing frame. The fairlead wheel assembly comprises a main shaft and a plurality of half matched parts, the half matchedparts are clamped on the main shaft through cleats, and a spring rod is connected between every two half matched blocks. The cleat matched type fairlead is high in matching degree, flexible in operation and capable of being matched with mooring ropes in different specifications, and improves work efficiency and safety.

The invention relates to an electric switch cabinet set body which comprises a cabinet body frame, a rear panel and a cabinet door, wherein the cabinet body frame is a cuboid frame, panels are arranged on the left side, right side and bottom surface of the cabinet body frame only, a front cover plate covering part of the top of the cabinet body frame only is arranged on the top of the cabinet body frame, the cabinet body frame is composed of multiple cuboid sectional materials, multiple installation holes are punched in the inner sides and outer sides of stand columns, the lower sides of top cross beams, and the upper sides of bottom beams of the cabinet body frame at equal intervals, and installation holes identical with the installation holes in the cabinet body frame are punched in the two sides of the rear panel and the lateral sides of the cabinet door at equal intervals. The electric switch cabinet set body further comprises a rear top cover plate and a rear top cover. According to the electric switch cabinet set body, the sectional material assembling technology is adopted to manufacture the totally-sealed cabinet body, the cabinet body is integrally formed through bending and assembling of boards, and the bent boards have the advantages of profile steel; furthermore, no exposed bolt exists, so that the cabinet body works independently and is convenient to install; the cabinet body is installed relatively independently and can be assembled freely, and assembly and replacement are convenient.

The invention relates to the technical field of generators, in particular to a friction-electromagnetic composite power generation device and a performance test platform and method thereof. The friction-electromagnetic composite power generation device comprises a rotor part, stator parts and a center shaft, the rotor part and the stator parts are arranged on the center shaft in a sleeving mode, and the two sides of the rotor part in the axial direction are sleeved with the two stator parts respectively; the rotor part is provided with a rotor plate, magnet arrays and blade arrays, the magnet arrays are fixed on the rotor plate, two axial ends of the rotor plate are fixedly connected with the blade arrays, and the blade arrays are provided with first dielectric films; each stator part is provided with a stator plate, a coil array, an electrode array and a friction layer, the coil array is fixed on the stator plate, the electrode array is fixedly connected with the axial surface of the inner side of the stator plate, and the friction layer formed by a second dielectric film covers the electrode array; and the friction layer is in contact with the first dielectric film on the blade array, and there is an electrode sequence difference between the first dielectric film and the second dielectric film. The device improves the energy conversion efficiency of power generation.

The invention belongs to the field of distribution automation control technical equipment and relates to a plugged box with distribution automation, which is characterized in that: the top part of a box body in a box-shaped structure is provided with a cover plate in a ventilated structure; two side faces of the box body are respectively provided with a side panel in a plug-in structure; the front part of the box body is provided with a fixed front panel, middle cross beams and front cross beams which are distributed vertically are arranged between the two side panels; an opening space is reserved between each middle cross beam and each front cross beam; vertical beams which are sequentially spaced are arranged on the middle cross beams, pass through the upper and lower middle cross beams and are fixedly arranged between the middle cross beams; the middle cross beams and the vertical beams are arranged in a same plane; and a motherboard is arranged on a corresponding structural position of the vertical beams and the middle cross beams. The plugged box with distribution automation has a simple and practical structure, is provided with the mother board which is convenient and easy to replace and assemble, has low cost, strong integral stiffness and wide applied range, and can effectively realize conversion and plug-in of structures of a distribution automation device.

The invention discloses an aircraft data acquisition device based on 5G, which comprises an aircraft body and a data acquisition device, and is characterized in that the data acquisition device is arranged on a rotating mechanism arranged at the lower end of the aircraft body, a transverse plate is arranged at the top of the aircraft body, a cylindrical groove is formed in the side surface of thetransverse plate in a penetrating manner, and a support plate is fixed on the transverse plate through the cylindrical groove; the supporting plate is perpendicular to the transverse plate and extendsupwards, a protection plate is arranged at the top end of the supporting plate, an expansion baffle is arranged in the protection plate, and the expansion baffle protrudes out of the outer surface ofthe protection plate and covers a data acquisition device assembled at the lower end of the aircraft body. The data acquisition device can be prevented from being collided by the external environment, and the acquisition device is an independent assembly, so that the applicability of the data acquisition device can be improved while assembly and replacement are facilitated.

The invention discloses a direct electricity conducting type movable steel claw with an exchangeable claw head, belongs to the technical field of aluminum electrolysis, and overcomes the defects of the prior art. The direct electricity conducting type movable steel claw with the exchangeable claw head has the advantages that welding among an anode aluminum guide rod, a steel claw cross beam and the steel claw is not required, split transportation is achieved, the steel claw cross beam is used as a bracket only, the steel claw is replaced conveniently and the conductivity is good. In order to solve the technical problems, the invention adopts the technical scheme that the direct electricity conducting type movable steel claw with the exchangeable claw head comprises the steel claw cross beam, the steel claw and the anode aluminum guide rod, wherein the steel claw cross beam is fixedly arranged on the anode aluminum guide rod, and one or more through holes are formed in the steel claw cross beam; each through hole is inserted and fixed with the steel claw; a steel aluminum composite plate is arranged at the top end of the steel claw; an aluminum belt is arranged between the steel aluminum composite plate and the anode aluminum guide rod; the aluminum belt, the steel aluminum composite plate and the anode aluminum guide rod are connected electrically. The direct electricity conducting type movable steel claw with the exchangeable claw head is mainly applied in the field of aluminum electrolysis.

The invention provides a waterproof structure of a full terrain vehicle rear wheel shaft. The rear wheel shaft is provided with a gearbox which is provided with a shaft transmission mechanism which transmits the umbrella gear of a shaft; the umbrella gear is slightly vertically engaged with the umbrella gear in the rear wheel shaft gearbox; wherein, the umbrella gear on the rear wheel shaft is extended with a receiving edge to one side of the rear wheel shaft; the receiving edge is extended out of the gearbox; furthermore, the receiving edge is sleeved with a dustproof sleeve; the dust and water can be stopped from entering the internal bearing thus rusting and damaging the bearing by using the dustproof sleeve; furthermore, the invention can reach the efficacy of convenient disassembly, assembly and replacement.

The invention discloses a valve plate assembly, which comprises a valve plate and a valve plate guide rail, wherein the valve plate is detachably movably connected with the valve plate guide rail. By the valve plate assembly, when the valve plate and the valve plate guide rail are assembled, the verticality is good, and the valve plate and the valve plate guide rail are in threaded connection, so the valve plate assembly is quickly and conveniently replaced or assembled.

The invention discloses a CT scanning frame and a CT scanning device. The scanning frame comprises a scanning frame main body and a transmission belt wheel arranged in the scanning frame main body, the transmission belt wheel is connected to a main rotating bearing, circumferentially distributed mounting holes are formed in an inner ring of the main rotating bearing, the mounting hole is used forconnecting a fixing frame, through dismounting the mounting holes and the fixing frame, the scanning frame main body can be conveniently assembled with the fixing frame and replaced, the CT scanning device comprises the CT scanning frame and the fixing frame, the fixing frame is a fixed CT fixing frame or a movable CT fixing frame or a suspension type CT fixing frame, the fixed CT fixing frame, the movable CT fixing frame and the suspension type CT fixing frame are each provided with an installation ring, the installation ring is provided with a threaded hole matched with the installation hole, and when the CT scanning frame needs to be installed, the CT scanning frame can be detached from the fixing frames of different types to be replaced, and then the function that one CT scanning frameis matched with the fixing frames of different types can be achieved.

The invention discloses a convenient-to-assemble mold for preparing a spliced external wall dry-hanging cement wallboard, and relates to the technical field of molds. The mold comprises a working table, a lower mold and an upper mold, the lower mold is movably arranged at the top of the working table, the upper mold is fixedly arranged at the top of the lower mold, ejector rods are fixedly arranged on the two sides of the bottom of the inner wall of the lower mold correspondingly, connecting rods are movably arranged on one sides of the ejector rods, the ejector rods are hinged to the connecting rods, nut seats are movably arranged at one ends of the connecting rods, the nut seats are hinged to the connecting rods, and lead screws are movably arranged on the inner walls of the nut seats. Through the arrangement of the ejector rods, the connecting rods, the nut seats and the lead screws, the supporting angle of the connecting rods is changed through threaded connection of the lead screws and the nut seats, so that the ejector rods vertically move to eject the wallboard, a user can conveniently take out the wallboard, time and labor are saved, the working efficiency of the user is greatly improved, and adverse effects caused by manual mold taking are avoided.

The invention discloses a combined feeler gauge tool capable of realizing step boring and depth control, and the gauge tool is used for calibrating and controlling multi-step boring depth in the process of measuring residual stress by a hole-drilling strain-gauge method. The process comprises the steps of setting twenty feeler gauges of assigned thickness by lamination, wherein the feeler gauge thicknesses are from 0.1mm-2mm and the intervals of adjacent feeler gauge are 0.1mm; feeler gauge anchoring bolts (3) are fixed inside a metal casing (2); and each feeler gauge can be screwed in or out the metal casing by winding each anchoring bolt. The feeler gauges in different thicknesses and the metal casing (2) are combined through the anchoring bolts. <{EN3}>Each position and size of an abnormal feeler gauge are optimized by appearance so that the abnormal feeler gauge can be engaged with a boring platform and a drilling rod perfectly; at the same time, a gap (5) for drawing the feeler gauges is left on the metal casing, so that the feeler gauges can be selected conveniently. <{EN4}>A manual multi-step boring depth control tool in the process of measuring the residual stress by the hole-drilling strain-gauge method is provided, and the tool has the advantages of high efficiency, simple operation and economical and practical benefits.

The invention relates to a novel permanent magnetic synchronous motor, which is mainly applied to high-energy-consumption industries such as iron and steel, electrical power, petrochemical engineering, machinery and the like. The novel permanent magnetic synchronous motor mainly comprises a stator and a rotor assembly, wherein the rotor assembly comprises a rotating shaft, an inner lining sleeve is fixedly connected in the middle part of the rotating shaft through a flat key, the outer side of the inner lining sleeve is fixedly connected with permanent magnet steel and a shaft sleeve, the shaft sleeve is divided into a plurality of blocks which are fixedly connected with the inner lining sleeve through fastening connecting elements, gaps are arranged between the shaft sleeve cutting blocks divided by the shaft sleeve, permanent magnetic steel is fixedly embedded in the gaps, the permanent magnetic steel can be set into four blocks, six blocks or eight blocks according to the step number of the motor, and the fastening connecting elements can adopt screw bolts and splayed pins. The novel permanent magnetic synchronous motor uses permanent magnets for replacing electric magnetic excitation magnetic poles, realizes the brushless structure, reduces the size of a rotor, omits a magnetic excitation DC power supply, and greatly improves the efficiency of the motor, and the power factor of the novel permanent magnetic synchronous motor is greatly higher than the power factor of an asynchronous motor.

The invention discloses a chock plug punching cutter. The punching cutter comprises an annular body; a vertical groove is arranged in the side surface of the annular body, a connecting plate is arranged above the annular body, the connecting plate is provided with connecting holes, the inner wall of the annular body extends downwards to form a cutting edge, springs are arranged in the annular body, the upper ends of the springs are connected to the back surface of the connecting plate, the lower ends of the springs are connected to a springback block, and the height of the springback block is higher than the bottom of the annular body. The chock plug punching cutter is simple in structure, good in stability, low in cost, easy for assembly and replacement, fast in mold stripping speed, and high in working efficiency, and the strength and roundness meet the requirements.

The invention relates to a glasses bracket type vision protection instrument. The glasses bracket type vision protection instrument comprises a glasses frame, a first glasses leg, a second glasses leg, a power source, an auxiliary part and a control mechanism; the first glasses leg and the second glasses leg are respectively connected with two sides of the glasses frame; the power source is installed on the first glasses leg; the auxiliary part is installed on the second glasses leg; the control mechanism is arranged in the glasses frame; the first glasses leg and the second glasses leg are detachably arranged at the two sides of the glasses frame respectively; the weight of the auxiliary part is matched with the weight of the power source, so that the weight of the first glasses leg and the weight of the second glasses leg can be relatively balanced; the control mechanism is electrically connected with the power source; the control mechanism comprises a main controller, a first sensor and an information output device; the first sensor and the information output device are both in signal connection with the main controller; and the main controller feeds back information fed back by the first sensor to a user through the information output device. The first glasses leg and the second glasses leg of the protection instrument are respectively provided with the power source and the auxiliary part which are matched with each other in weight, so that relative balance is realized; the first glasses leg and the second glasses leg are detachably arranged on the glasses frame, so that the first glasses leg and the second glasses leg are convenient to replace; the main controller feeds back the information fed back by the first sensor to the user through the information output device and reminds the user in time.

The invention discloses a small motor, which comprises a rotating shaft, a casing, a brush box and a pin. The rotating shaft is arranged at the center of the casing. The brush box is connected with the casing. The pin is arranged in the casing. The casing and the brush box are connected through thread. A baffle is arranged on the casing. The rotating shaft is provided with thread. The brush box is internally provided with a groove and a radiating fin. The groove is internally provided with thread matched with the thread on the rotating shaft. In the assembling, only the brush box is needed to be connected with the casing through the rotation of the thread, and then with the action of the pin, the brush box and the casing are fixed; and if the rotating shaft is needed to be replaced, only the pin is needed to be open to take off the brush box in a rotating manner, so that the complexity in assembling the casing and the brush box and tedious processes of difficult dismounting are tackled, the replacement and assembling of motor parts can be performed effectively and conveniently, and an occasion that a motor is damaged as the temperature of the motor is too high can be effectively prevented after the brush box is internally provide with the radiating fin.