36results about How to "Good shock absorbing function" patented technology

The invention discloses hardware stamping processing equipment with a protection performance. The equipment comprises a base box; the top of the base box is fixedly connected with a supporting wall, and a stamping box is fixedly connected to the top of the supporting wall; the two sides of the top of the inner wall of the stamping box are rotationally connected with rotating shafts through a fixing frame correspondingly; a first belt wheel is fixedly connected to the surface of the rotating shafts; and a motor is fixedly connected to the bottom of the inner wall of the stamping box, and a output shaft of the motor is fixedly connected with a second belt wheel; and the surface of the second belt wheel is in transmission connection with the first belt wheel through a belt. The invention relates to the technical field of hardware stamping. According to the hardware stamping processing equipment with the protection performance has a good buffering and damping functions, vibration and noisegenerated by a machine can be effectively reduced during punching, so that molds are better protected, and the service life of the molds is prolonged, and the stamping forming product is more standard, and the bottom die can be moved and pulled out conveniently, then workpieces can be conveniently taken and placed.

The invention discloses a carrier vehicle capable of preventing carriage transition shake. The carrier vehicle comprises frame. A power device, a turning assembly, a hydraulic assembly, a clutch assembly and a cab assembly are mounted on the frame. A carriage is mounted at the rear end of the frame. Carriage support frames are distributed on two sides of the rear end of the frame. The carriage is disposed on the carriage support frames. A damping device is connected between the frame and the carriage. By the damping device added between the frame and the carriage, when goods shake or the road conditions are poor and the carrier vehicle jolts, and the carriage can have a good damping and buffer function. Due to the fact that the carriage is mounted on the carriage support frames, a certain distance exists between the carriage and the frame, the carriage is not in contact with the frame, loss caused by collision of the carriage and the frame can be avoided, the carriage and the frame can be protected favorably, and the service life of carriage and the frame can be guaranteed.

The invention provides a formwork trolley with adjustable width pipe gallery, which includes a formwork assembly, a telescopic mechanism, a variable width frame, a running mechanism, a monitoring mechanism and a control cabinet. The formwork assembly includes a top formwork, a left formwork, a right Template and bevel template; the telescopic mechanism includes a left screw motor, a right screw motor, a top hand screw, a top screw motor and a bottom screw motor; the variable width frame includes a column, a bottom The telescopic crossbeam, the middle telescopic crossbeam and the top telescopic crossbeam; the traveling mechanism includes traveling wheels and shock absorbing pads; the monitoring mechanism includes a pressure sensor and a distance sensor. The formwork trolley for adjustable wide pipe gallery of the present invention is suitable for the construction of pipe gallery with a width of 1500-2750 mm, and has small amount of disassembly and assembly, low labor intensity of workers, stable quality and high efficiency, and can overcome the problems existing in the existing construction method of pipe gallery The shortcomings of large disassembly and assembly, low construction efficiency, low equipment reuse rate and unstable construction quality.

The invention relates to the navigation positioning technology field and discloses an indoor layered positioning device based on a composite positioning technology. The device comprises a central processing module, a satellite transceiver module, a base station transceiver module, a wifi transceiver module, a height sensing module, a storage module, a power module and a pedestal. The upper end ofthe pedestal is fixedly provided with a buffer box. The inner wall of the buffer box is slidably connected to a buffer plate. The lower end of the buffer plate is connected to the inner wall of the bottom portion of the buffer box through a plurality of buffer mechanisms The upper end of the buffer plate is fixedly connected to the inner wall of the top portion of the buffer box through a plurality of buffer springs. The upper end of the buffer plate is fixedly connected to a support block. The upper end of the support block is stretched out of the buffer box through a through hole and is fixedly connected to a shell. The lower end of the shell is fixedly connected to the inner wall of the top portion of the buffer box through a plurality of elastic telescoping rods. The indoor layered positioning device based on the composite positioning technology has various functions.

The invention provides a packing material, which comprises a base layer and a buffer layer formed on a surface of the base layer; the base layer consists of polystyrene and additives; and the buffer layer is made of a silica gel material. The packing material has good buffer and damping function. The invention also provides a preparation method for the packing material and a packing product made of the packing material.

The invention discloses a heat preservation traditional Chinese medicine planting greenhouse. The greenhouse comprises a plurality of supporting rods, a same stabilizing rod is fixedly connected between the left and right symmetric supporting rods, and the upper ends of the two supporting rods are fixedly connected with a same arc top; a plurality of limiting telescopic rods are fixedly connectedbetween the front and back adjacent supporting rods; each limiting telescopic rod comprises a supporting cylinder is fixedly connected with one of the supporting rod, an extending rod movably sleeveseach supporting cylinder, and each extending rod is fixedly connected with the other supporting rod; two cylindrical grooves are symmetrically formed in the walls, close to one ends of the supportingcylinders, of the extending rods; limiting rods are fixedly connected with the interiors of the cylindrical grooves through reset springs, and the walls of the supporting cylinders are evenly providedwith limiting holes matched with the limiting rods. The size of the greenhouse can be adjusted conveniently, the greenhouse is convenient to build, and the whole greenhouse can be convenient to move.

The invention discloses a truck used for transporting casting risers. The truck comprises a vehicle frame. The vehicle frame is provided with a power device, a steering assembly, a hydraulic assembly, a clutch assembly, and a cab assembly. A carriage is arranged on the upper part of the right side of the vehicle frame. Two sides of the bottom side of the carriage are provided with carriage support frames. A damping spring is connected between the vehicle frame and the carriage. The front side surface, the rear side surface, and the left side surface of the carriage are formed by first steel plates and second steel plates. Suspension springs are fixedly arranged in the interlayer of the first steel plates and second steel plates. A layer of sponge mat is laid on the bottom surface in the carriage. The sponge mat is placed with a plurality of riser placing frames. Through adding the damping device between the carriage and the vehicle frame, the carriage has a good vibration buffer function. When road condition is poor and the truck jolts or car accidents occur, the suspension springs can rapidly absorb strike energy. The arrangement of a shakeproof film further prevents risers in the carriage from being damaged.

Screening equipment for leisure food processing, including a screening frame and bellows; a screening frame is installed on the right side of the top surface of the working platform by using a crankshaft rotating seat and a rotating rod, and a screening plate is inserted in the screening frame, and the screening frame A corrugated pipe is also connected to the bottom surface of the bottom surface by bolts; the bottom end of the corrugated pipe passes through the working platform and is connected to the top of the secondary material receiving tank; A material guide pipe is also installed through the downward slope; the right end surface of the support frame is connected with a fan through the fan base bolt, and the screw propeller is used to stir the nuts snack food during the material guide process. The first-level screening food enters the crank-link type screening box on the right side for secondary screening. During the movement of the screening box, the smaller nuts are screened again and fall into the bottom-side secondary receiving material. In the tank, two-stage screening is realized to speed up the screening.

The invention aims to provide a double-curvature seismic isolation and reduction spherical bearing with high damping. A damping device and a corresponding motion device are additionally arranged on the basis of an existing double-curvature seismic isolation and reduction spherical bearing to increase damping of the bearing when an earthquake occurs and dissipate earthquake energy, so that seismicreduction and seismic isolation of the bearing are effectively combined, seismic isolation and reduction functions of the bearing are substantially improved, and displacement of the bearing after theearthquake is effectively controlled. The double-curvature seismic isolation and reduction spherical bearing with high damping has a good seismic isolation function of the double-curvature seismic isolation and reduction spherical bearing and an automatic reset function after the earthquake, meanwhile, damping force of the bearing is increased by the damping device, ground motion peak accelerationof a bridge is reduced, structural safety of the bridge is effectively guaranteed, meanwhile, the damping device has a good energy dissipation effect, and therefore, earthquake energy of the bridge can be substantially reduced. The double-curvature seismic isolation and reduction spherical bearing with high damping has a full hysteretic curve, has greater energy-dissipating capacity than the double-curvature seismic isolation and reduction spherical bearing and other anti-seismic products and is particularly suitable for a bridge anti-seismic structure in an area with high intensity and longfield period.

The invention discloses a plant protection unmanned aerial vehicle device with an anti-falling buffer function. The device comprises a cover body, a protective parachute, a single chip microcomputer and a main body; a plant protection liquid storage tank is mounted at the middle position of the bottom end in the main body; a spraying pipe is arranged in the middle of the bottom end in the plant protection liquid storage tank; the spraying pipe longitudinally penetrates through the bottom end of the main body; a flow control valve is mounted on the spraying pipe; storage batteries are installedat the bottom end of the interior of the main body at two ends of the plant protection liquid storage tank, sealing cavities are formed in the bottom end of the interior of the main body on two sidesof the plant protection liquid storage tank, the single-chip microcomputer is installed in the sealing cavity in one side of the plant protection liquid storage tank, and the output end of the flow control valve is electrically connected with the input end of the single-chip microcomputer through a wire. According to the plant protection unmanned aerial vehicle device with the anti-falling bufferfunction, wings, a mounting disc and a flange plate are mounted, so that the device is convenient for workers to disassemble and replace the wings, and the service life of the device is prolonged.

The invention provides an explosion-proof lamp for a digital well site. The explosion-proof lamp comprises a bulb, a lamp holder, a fixed seat, a first connecting plate, a second connecting plate, a left protective cover, a left mosquito sticking board, fastening screws, a right protective cover, a right mosquito sticking board, fastening bolts and nuts, a buffer type explosion protection rapid mounting rack, a height-adjustable movable slip pipe structure, a separable exploded lamp glass piece protective cover structure and mosquito attracting and killing lamp structures. By arranging rapid mounting bolts, a rapid mounting plate, a buffer seat, buffer rods, buffer springs and blocking rings, rapid mounting and fixing can be realized, good buffering and damping functions can be realized when the lamp explodes, and casualties caused by explosion are avoided; by arranging a graduated scale, a fixing column, a connecting seat, a slide pipe, an open ring and an adjusting bolt, height of the lamp can be adjusted according to mounting requirements of the lamp, and the illumination requirement can be met.

A vehicle suspension system is disclosed in the invention, and comprises a left side hydraulic part, a right side hydraulic part and a double-acting energy accumulator, the left side hydraulic part comprises a left side energy accumulator, the right side hydraulic part comprises a right side energy accumulator, and the left side energy accumulator and the right side energy accumulator communicate with the double-acting energy accumulator through oil ways; and the initial inflation pressure of the double-acting energy accumulator is larger than the initial inflation pressure of the left side energy accumulator and the initial inflation pressure of the right side energy accumulator. The vehicle suspension system is an independent closed system, does not have an external oil source, a control oil way and a control system, is simple in structure, free of maintenance and good in reliability, the double-acting energy accumulator is arranged between the left side hydraulic part and the right side hydraulic part, buffering damping and empty and full load self-adaption can be achieved, and the double-acting energy accumulator is closed in the no-load state; the left side hydraulic part and the right side hydraulic part can bear different impact pressures and have an anti-roll function; and in a full-load state, the double-acting energy accumulator is started, the left hydraulic part and the right hydraulic part are in isobaric balance, and the functions of buffering, shock absorption and load balance are achieved.

A chemical filler stirring device disclosed in the invention comprises a box body, a motor is installed in the middle of the surface of the top of the box body, the output end of the motor penetrates through the box body and is fixedly connected with a stirring shaft, a connecting rod is arranged on the stirring shaft, an inserting groove is formed in the surface of one side of the connecting rod, and a first spring is arranged in the inserting groove; and one end of the first spring is fixedly connected with an inserting rod, limiting blocks are arranged on the surfaces of the two sides of the inserting rod, one end of each limiting block extends into limiting grooves formed in the two sides of the inner wall of the inserting groove, and a scraping plate is arranged at one end of the inserting rod. The stirring shaft is driven by the motor to rotate, so that a first stirring blade and a second stirring blade on the stirring shaft synchronously rotate along with the stirring shaft, chemical filler in the box body can be effectively and uniformly stirred, the chemical filler is fully mixed in the box body, and the stirring effect on the chemical filler is conveniently improved; and therefore, the processing quality of the chemical filler is improved.

The invention discloses a shock absorber for a new energy automobile. The shock absorber for the new energy automobile comprises a cylinder body, a movable rod is arranged in the inner part of the cylinder body, the bottom end of the movable rod extends to the inner part of the movable rod and is provided with a piston assembly, an upper mounting base is mounted at the top end of the movable rod,the outer side of the cylinder body is sleeved with a movable plate, lifting rods are symmetrically hinged to the two ends of the top of the movable plate, and the top ends of the lifting rods are hinged to the two ends of the bottom of the upper mounting base. According to the shock absorber for the new energy automobile, through cooperative use of an oil seal assembly, a lower mounting base, a mounting plate, an air inlet and outlet assembly, the cylinder body, the movable rod, a through opening, the piston assembly and a through groove, the movable rod, the piston assembly and the cylinderbody jointly play a role in air exhaust of a needle cylinder by means of force generated by releasing elastic potential energy through a second spring and a first spring, and therefore, force generated by releasing elastic potential energy by the second spring and the first spring is relieved, and the whole shock absorber for the new energy automobile is more stable during shock absorption.

The invention provides a removal archaistic landscape corridor for preventing mountainous area tourist attraction falling rocks. The removal archaistic landscape corridor comprises two columns of stand columns arranged on a corridor foundation, a longitudinal beam is connected between the tops of the adjacent stand columns in the same column, and cross beams are connected between the longitudinalbeams, and an archaistic corridor roof is detachably mounted above the cross beams. At least one layer of rolling rock preventing landscape wall is detachably mounted on the adjacent stand columns inthe same column; each stand column is composed of an upper steel pipe column, a middle steel pipe column and a lower steel pipe column from top to bottom, and a buffering mechanism is arranged betweeneach upper steel pipe column and the corresponding middle steel pipe column; and the lower steel pipe columns are detachably mounted on bases, the bases are formed by welding horizontal steel plate sand vertical sleeves, the lower steel pipe columns are inserted into the vertical sleeves, and the horizontal steel plates are mounted and fixed to foundations through high-strength bolts. The removalarchaistic landscape corridor for preventing the mountainous area tourist attraction falling rocks is high in safety, comprehensive in function and convenient to mount, demount and repair, and the scene district program adjustment and temporary use needs can be met.

The invention discloses cutting equipment convenient to adjust and used for automatic machining of printer parts. The cutting equipment comprises a first threaded rod, a pressing plate, a positioning rod, a shell, a limiting rod and an operation base table, supporting legs are installed at the four corners of the bottom of the shell, extrusion plates are installed at the bottoms of the supporting legs, a damping rubber pad is installed on the outer wall of each extrusion plate, the damping rubber pads are installed on the inner wall of the base, limiting rods are evenly installed on the inner wall of the bottom of the base, the other ends of the limiting rods penetrate through the upper surfaces of the extrusion plates and extend to the outside of the base, a hydraulic cylinder is installed on the upper surface of the shell, a hydraulic telescopic rod is installed in the center of the bottom of the hydraulic cylinder, and the other end of the hydraulic telescopic rod penetrates through the upper surface of the shell to be provided with a push plate. The position adjustment work of a to-be-machined part can be achieved, the equipment has a good damping function, the service life is prolonged, and meanwhile the equipment is good in cutting effect and high in practicability.

The invention discloses an installation system of an automobile ABS anti-lock braking system. The system comprises a motor and a pressure regulator. The motor is mounted on an outer wall of a left endof the pressure regulator; a main cylinder connecting hole is formed in the outer wall of an upper end of the pressure regulator; during working, firstly, an automobile abs pump, a mounting plate anda placement frame are mounted and fixed through supporting springs; the supporting springs are arranged on the inner walls of the placement frame, the mounting plate and a holding ring; through an effect of the support springs, the automobile abs pump can be supported and fixed; through good elastic performance of the supporting springs, good buffer performance can be provided for the automobileabs pump; a vibration force received by the automobile abs pump is greatly buffered and counteracted; and the automobile abs pump is protected, a problem that compact electrical apparatus elements inthe automobile abs pump are loosened or damaged due to vibration is effectively avoided, heat dissipation holes are evenly distributed in a heat dissipation plate, and the automobile abs pump during working can be effectively and smoothly subjected to heat dissipation work.

Structurally, the mine-sweeping explosion-proof boots features that the II-shaped shock resisting diffraction frame connected to the polystyrene carrier in the boot soles. Inside the carrier, there are from the bottom to top lower explosion-proof layer, buffering layer, upper explosion-proof layer, "trussed" foamed plastic strips, foaming plate layer, explosion-proof plate layer, transverse elastic sponge strips, and EVA plate layer, with the lower explosion-proof layer, buffering layer and upper explosion-proof layer being V-shaped. The vamp of boots has protecting layer inside the fiber fabric layer. The boots have the novel structure and powerful protecting capacity of blocking, separating and weakening direct shock and indirect diffraction of explosion and is light and convenient.

The invention discloses a low-noise diamond saw blade. The low-noise diamond saw blade comprises a circular base plate, a liquid gallium alloy as well as diamond bit pieces and magnet combinations which are evenly welded on the outer side of the circular base plate; a circular staggered eccentric flow-guiding channel is formed inside the circular base plate; a fixing sleeve is symmetrically weldedin the center of the side wall of the circular base plate in a penetrating manner; the circular staggered eccentric flow-guiding channel comprises a circular channel I and a circular channel II; thin-wall arc-shaped plates are evenly welded on the inner side wall of the circular channel I and the inner side wall of the circular channel II; the circular channel I and the circular channel II are filled with the liquid gallium alloy; and the liquid gallium alloy flows in a communicating manner. According to the saw blade, the thin-wall arc-shaped plates are evenly distributed by the aid of the circular staggered eccentric flow-guiding channel and can absorb shocks produced during cutting of the saw blade, during rotation of the circular base plate, spaces among the thin-wall arc-shaped plates are filled with the liquid gallium alloy, the liquid gallium alloy has the excellent shock-absorbing function, and then the cutting noise can be greatly reduced.

The invention discloses a novel LED lamp bead. The novel LED lamp bead comprises a lampshade, a lamp holder and lead frames, wherein the bottom of the lampshade is horizontally and fixedly connected with the lamp holder, two sides of the bottom of a stabilization seat are connected with one lead frame respectively, the bottom of the lamp holder is connected with a longitudinally-arranged flexiblemetal rod in a clamped mode through positioning grooves, the bottom of an ejecting plate is horizontally connected with a bottom plate, a rotating shaft which is longitudinally arranged is connected between two plugs, a second connecting head is horizontally connected to the bottoms of the two lead frames, the bottoms of the lead frames is longitudinally connected with conductive rods through second connectors, the tops of the conductive rods is horizontally connected with first connectors, the second connecting heads are connected with inserting holes and the groove in a clamped mode throughinserting rods and a convex head. During use, vibration is not easy to shake and damage, and the service life is prolonged; in the working process, damping s can absorb a part of the vibration force so as to play a role in buffering; and the cooling liquid inside the lamp holder absorbs heat generated in the working of the lamp bead, so that the working temperature of the lamp bead is reduced.

The invention discloses a smart home cloud processing platform based on the Internet of Things, and the platform comprises a pedestal, the upper end of the pedestal is provided with a housing, one side of the housing is connected with a hinge rod, the upper end of the pedestal is connected with a hinge seat, the hinge rod is connected to the hinge seat, and the inner side of the housing is provided with an Internet of Things processing platform body. The bottom of the Internet of Things processing platform body is connected to the base through a suspension installation mechanism, and the Internet of Things processing platform body comprises a main processor, a controller, an Internet of Things information receiver, an Internet of Things information memory, a control panel, an indicator lamp, a display screen, an automatic fine adjustment device, an auxiliary processor and an Internet of Things information feedback device. And an air outlet is formed in the top of the housing. By arranging a ventilation mechanism and a filtering mechanism, circulating ventilation and heat dissipation can be achieved, inlet air can be effectively dehumidified; meanwhile, a good buffering and dampingfunction is achieved, and then normal and stable operation of the platform is guaranteed.

The invention discloses a shock absorber for a new energy vehicle, which comprises a cylinder body, a movable rod is arranged inside the cylinder body, and the bottom end of the movable rod extends into the inside of the movable rod and is provided with a piston assembly, the movable rod The upper mounting base is installed on the top of the rod, and the outer side of the cylinder body is provided with a movable plate, and the two ends of the top of the movable plate are symmetrically hinged with lifting rods, and the top ends of the lifting rods are respectively hinged with the two ends of the bottom of the upper mounting base. . In the present invention, through the cooperative use of the oil seal assembly, the lower mounting base, the mounting plate, the air inlet and outlet assembly, the cylinder body, the movable rod, the port, the piston assembly and the channel, the elastic potential energy produced by the release of the second spring and the first spring is utilized. Force, so that the movable rod, piston assembly and cylinder together play the role of syringe pumping, thereby relieving the force generated by the release of the elastic potential energy of the second spring and the first spring, so that the shock absorber for the entire new energy vehicle can be used in the shock absorber It is more stable when shaking.

The invention relates to a dumping inductive switch of a motorcycle, comprising an enclosure, a support arranged in the enclosure, a magnetic field inductive device fixed on the support, and a magnet cooperated with the magnetic field inductive device, wherein the magnet is connected with a central spindle by a bearing, and the two ends of the central spindle are fixed on the support; the magnet is U shaped, comprises magnetic field generation parts on the two sides and a connecting part with a bottom for connecting the magnetic field generation parts on two sides, the magnet connecting part is connected with a fan-shaped counterweight block comprising a cambered surface on the lower end and angular surfaces on the two sides, and the cambered surface of the counterweight block is dead against the magnetic field inductive device; the magnet connecting part is fixed with the outer ring of the bearing, the central spindle is cooperated with the inner ring of the bearing and is shaped like a ladder, and the shape of the inner ring of the bearing fits with the shape of the central spindle. The roll-over magnet design ensures wider applicative environment and smaller probability of misoperation; in the central spindle structure shaped like a ladder, the assembling of the magnet and the central spindle is more convenient and faster without assembling mistakes.

The multifunctional steel column for the building comprises a base, a first fixed steel column is fixedly connected to the position, close to the middle, of the top of the base, an elastic connecting block is fixedly connected to the top of the first fixed steel column, and a second fixed steel column is fixedly connected to the top of the elastic connecting block; welding blocks are fixedly connected to the positions, close to the bottoms, of the front and rear surfaces of the second fixing steel column, guide rods are fixedly connected to the bottoms of the welding blocks, and fixing blocks are fixedly connected to the positions, close to the middles, of the front and rear surfaces of the first fixing steel column. According to the multifunctional steel column for the building, through the design of a first rolling energy absorption rubber column, a second rolling energy absorption rubber column, a rubber ball block and a movable plate, the multifunctional steel column for the building has a good buffering and damping function, the borne vibration sense can be absorbed, and therefore the multifunctional steel column for the building is more stable during working, and the anti-seismic property of the building is also improved synchronously; and the safety of people in living is improved.

The invention belongs to the technical field of food packaging, and particularly relates to a spliceable child food packaging tank. The child food packaging tank comprises a first tank body with the hollow interior, a plurality of second tank bodies with the hollow interiors are accumulated on the upper surface of the first tank body, and a third tank body with the hollow interior is installed at the top end of each second tank body. A threaded ring is fixedly arranged on the upper surface of each second tank body. Due to the fact that the threaded rings are matched with threaded grooves, the multiple second tank bodies can be vertically spliced together conveniently, a threaded connection mode is adopted, operation is simple and easy, detachment is facilitated, if a child pulls open and takes off a sealing plate through a pull ring, during vertically splicing, a plurality of second springs on the bottom face of the second tank body located on the upper portion drive a fixed disc to move, and after threads are screwed, a clamping ring is clamped into a clamping groove at the moment, the top of the second tank body located on the lower portion is sealed, food on the lower layer is isolated, the food is prevented from being polluted by the outer portion, and cleanliness of the bottom face of the second tank body on the upper layer is guaranteed.

The embodiment of the invention discloses a heat dissipation and dust prevention integrated mechanism of a big data server and an implementation method. The heat dissipation and dust prevention integrated mechanism of a big data server comprises a plurality of shock-absorbing chassis bodies and a base formed by combining theshock-absorbing chassis bodies; a plurality of combined cabinet bodies arearranged right above the base; each combined cabinet body comprises an outer cabinet body and an inner cabinet body located in the outer cabinet body. Rectangular holes are formed in the front face of the outer cabinet body. T-shaped side grooves are formed in the other five surfaces of the outer cabinet body; T-shaped blocks are inserted into the T-shaped side grooves. Through T-shaped cavitiesare formed in the T-shaped blocks; T-shaped heat conducting plates are inserted into the T-shaped cavities; T-shaped accommodating cavities for storing cooling liquid are formed in the T-shaped heat conduction plates; an inverted [-shaped heat conduction layer is arranged between the outer cabinet body and the inner cabinet body, the heat conduction layer is fixedly connected with the outer cabinet body, strip-shaped openings are formed in the two sides and the rear side of the heat conduction layer, the heat dissipation effect can be improved, meanwhile, dust and other impurities are prevented from entering equipment, and the performance of the equipment is prevented from being affected.