421results about How to "Optimize the installation method" patented technology

Disclosed are a ceramic composite material of a high temperature insulation sandwich structure and a method for preparing the ceramic composite material. A core layer of the composite material is an aerogel composite material layer reinforced by high temperature resistant inorganic fibers, oxide ceramic composite material surface plates reinforced by high temperature resistant inorganic fibers are compounded on the upper surface and the lower surface of the core layer, the thickness of the core layer is larger than or equal to 2mm, and the thicknesses of the upper surface plate and the lower surface plate respectively range from 0.1mm to 3.0mm. The method for preparing the ceramic composite material of the high temperature insulation sandwich structure includes the steps: (1) selecting aerogel composite materials reinforced by the high temperature resistant inorganic fibers as materials of the core layer with the thickness larger than or equal to 2mm; (2) tiling high temperature resistant inorganic fiber cloth or thin-layer fabrics on the upper surface and the lower surface of the core layer to perform needling, puncture or sewing; (3) sucking sol in a vacuum manner and gelating the sol at the temperature of 30-200 DEG C; and (4) performing heat treatment. The ceramic composite material of the high temperature insulation sandwich structure integrates the functions of heat insulation, bearing, wave penetration and the like.

The invention relates to an off-line detection device for a driving motor of an electric vehicle. The off-line detection device comprises the driving motor to be detected, a load motor, a controller of the motor to be detected, a controller of the load motor, a power supply and an upper computer, wherein an output shaft of the load motor is connected with an output shaft of the driving motor to be detected sequentially through a torque sensor and an inertia wheel group, the upper computer is connected with the torque sensor and respectively connected with the driving motor to be detected and the load motor through the controller of the motor to be detected and the controller of the load motor, and the power supply is respectively connected with the driving motor to be detected, the load motor and the torque sensor. According to the off-line detection device for the driving motor of the electric vehicle adopting the structure, the motion of the motor can be automatically controlled by setting control parameters of the upper computer, and the testing of various load working conditions of the motor to be detected can be realized; simultaneously, the load motor can be used as a power generator, thereby circulating electric energy and saving the energy; and the motor which is the same with the motor to be detected is taken as a load, thereby further reducing the detection cost.

The invention relates to a clamp and a method for quickly installing a torsion spring. The clamp comprises two symmetrical clamp arms connected through the coupling of a rotary pin roll, and each clamp arm is divided into a front section and a back section by the coupling part; the inner ends of the front sections of the clamp arms are respectively provided with a locating hole, and a return compression spring is connected between the inner ends of the back sections of the clamp arms; and the rotary pin roll fixes a forward locating clip of a locating slot through coupling. The invention mainly solves the technical problem that the torsion spring is easy to jump out from an end opening of a tool rod to hurt people when the tool rod is used for installing the torsion spring. Only one operator is needed to complete installation operations, and the installation mode is simple, convenient, safe and efficient.

The invention discloses a touch screen display and control structure for a refrigerator and a refrigerator provided with the same. The touch screen display and control structure includes a light-tight display and control panel, a touch screen and a display and control plate assembly, wherein a middle through hole horizontally penetrating through the display and control panel is arranged in the display and control panel; a first fixing part is arranged on the rear surface of the display and control panel; the touch screen is pasted on the rear surface of the display and control panel through a double faced adhesive tape, and the touch screen is positioned at the middle through hole; the display and control plate assembly is fixed on the rear surface of the display and control panel and positioned on the rear side of the touch screen; the display and control plate assembly includes a liquid crystal display and a plastic bracket; the liquid crystal display is positioned on the rear side of the touch screen, and a certain distance is reserved between the liquid crystal display and the touch screen; the liquid crystal display is fixed on the plastic bracket; and a second fixing part matched with the first fixing part is arranged on the plastic bracket. According to the touch screen display and control structure for the refrigerator provided by the embodiment of the invention, the structure is reliable, and the mounting manner is simple, fast and convenient.

The invention discloses a loop soaking plate, and aims to provide the loop soaking plate with simple structure, low cost and higher generality and particularly suitable for high-heat-flux places. The loop soaking plate comprises a cover plate and a baseplate; the cover plate is fixed on the baseplate; a closed vacuum plate shell is formed between the cover plate and the baseplate; a first capillary structure layer and a second capillary structure layer are arranged in the plate shell; an evaporation cavity is formed between the first capillary structure layer and the second capillary structure layer; multiple support structures are vertically arranged between the first capillary structure layer and the second capillary structure layer; the first capillary structure layer is permeated with a liquid-state working medium; the plate shell is provided with at least one loop module for accommodating the working medium to flow; and the loop module communicates with the evaporation cavity.

The invention discloses an installment structure of a GRG decorative panel. The installment structure of the GRG decorative panel comprises the GRG decorative panel 1 fixed on a building wall body 2. The left side and the right side of the back of the GRG decorative panel 1 are respectively thickened, and therefore vertical installment strips 11 are formed on the left side and the right side respectively. A vertical keel 3 is fixed on the wall body 2. The wall body 2 is further provided with a first installment piece 4 and a second installment piece 5, wherein the first installment piece 4 is fixed on the vertical keel 3, the left end of the second installment piece 5 is fixed with vertical installment strips 11, and the right end of the second installment piece 5 is fixed with the first installment piece. Because the GRG panel is provided with the vertical installment strips, the vertical keel is arranged on the wall body, transverse keels are not needed, the first installment piece is connected with the second installment piece to replace the function of the transverse keels, installment work load is small, installment cost is low, and installment efficiency is high.

This invention relates to a method for changing the unblocked cabinet adopted in traditional computer and its server into locked one to prevent harm dust does to computer, characterized in adopting present ceramic semiconductor refrigerator to supply cold source for blocked cabinet, temperature of cabinet used in computer and its server being controlled in the range of from 25Deg.C to 30Deg.C under the effect of controlling temperature circuit to make the computer and its server safely and stably work in clean environment and suitable temperature.

The installing method and installing configuration of match weight block for the barrel roller washing machine, its configuration consists of the outer case of the washing machine, a weight match block on which there are installing holes. There is fixed device incorporated with case for the installing of the weight match block which is installed on the fixed device through the installing holes, and the weight match block can fix on the case of the washing machine by the tighten fixed device. This invention can obtain a more convenient installing method by the replacement of the bolt device by the swell blot on the base of no changing the current configuration of the weight match block. It can save the cost, process and working intensity largely.

The invention discloses a method for producing a liquid wood integral door, which comprises the following steps of: 1) preparing liquid wood, namely (1) drying and grinding raw materials; (2) mixing the raw materials to obtain a mixture; and (3) generating the liquid wood, wherein the liquid wood comprises the following raw materials in part by weight: 100 parts of polyvinyl chloride, 40 parts of calcium carbonate, 60 parts of wood fiber powder, 4.5 parts of stabilizer, 8 parts of chlorinated polyethylene (CPE), 5 parts of acrylamide (ACR), 3 parts of H530, 0.5 part of polyethylene (PE) wax, 0.6 part of stearic acid, and 1 part of pigment; and 2) performing extrusion molding on the liquid wood at one time to obtain the integral door. In the method, the raw materials are molded at one time at a high temperature and under high pressure, do not contain formaldehyde, and are subjected to surface treatment by adopting thermal transfer technology; the integral door is free of paint, has no any toxic harmful gas and smell release in the production and use process, is environmental-friendly and has practicality.

The invention relates to a power joint device. The device comprises a joint body, a power device and a measuring device; the measuring device comprises a first angular measuring device, the first angular measuring device comprises a first magnet and a first magnetic field induction circuit, the first magnet is connected with one end of a motor output shaft, and is close to a first motor cover plate, the first magnetic field induction circuit is arranged on the inner side of the first motor cover plate and is close to the first magnet, a motor rotates to drive the motor output shaft to rotate,and further drive the first magnet to rotate, and the first magnetic field induction circuit induces the rotating angle of the first magnet so as to measure the rotating angle of the motor. Through the first magnet and the first magnetic field induction circuit which are in the non-contact coupling manner, measuring of the motor rotating angle is achieved, mechanical friction losses are avoided, simpleness, lightness, thinness and low cost are achieved, compared with an existing integrated type encoder scheme, mechanical structural design complexity is greatly simplified, a magnetic field generated by the magnet is a static magnetic field, the environment interference influence is avoided, and reliability is high.

A spaceborne integrated miniaturized composite connector comprises a composite socket (1) and a composite plug (6). The composite socket (1) comprises a socket shell (2), a low-frequency socket contact element (3), an RF (radio frequency) pin contact element (4) and dielectric filling material (5), and the composite plug (6) comprises a plug shell (7), an RF socket contact element (8), a stranded wire pin group (9), a plug base (10), a locking screw (11), a tail cover (12), insulation potting adhesive (13), a low frequency wire (14), an RF coaxial line (15) and a clamp (16). The composite connector avoids the connection of a variety of multiple high-frequency connectors, improves reliability and air tightness and reduces the weight of the connector and a cable. Furthermore, the composite connector has the advantages of mixed loading of high and low frequency, small spacing, highly reliable electrical contact, misplug prevention guide, tight locking property, high air tightness and easy installation.

The invention discloses a convenient-to-mount ammeter which comprises a box. An ammeter body is arranged in an inner cavity of the box, a threaded hole is formed in each of two sides of the box, a threaded column is connected in each of the two threaded holes in a threaded manner, opposite ends of the two threaded columns are fixedly connected with a first retaining block and a second retaining block respectively, the first retaining block is positioned on the left side of the second retaining block, the first retaining block and the second retaining block are positioned on two sides of the ammeter body, and the bottom ends of opposite faces of the first retaining block and the second retaining block are fixedly connected with a first clamping block and the second clamping block respectively. By arranging a storage groove, a spring, a moving block, a first rotating shaft and a hinging seat and through cooperation of a U-shaped groove, the second clamping plate and the first clamping plate, when the moving block slides to the U-shaped groove, the spring ejects the moving block to enable the same to be clamped in the U-shaped groove by leftwards pushing the second clamping plate and rightwards pushing the first clamping plate, so that effect of fixing the second clamping plate and the first clamping plate is realized; the ammeter is convenient to mount, so that maintenance efficiency is improved, and time and labor are saved.

The invention discloses a method for measurement of two-phase flow gas holdup based on an ultrasonic two-frequency signal. The method comprises the steps of: arranging an ultrasonic transmitting probe and an ultrasonic receiving probe respectively at both ends of a section of straight pipeline needing two-phase flow gas holdup measurement; by means of the ultrasonic transmitting probe, generating two ultrasonic signals that are propagated along the fluid in the straight pipeline and have the excitation frequencies of a first excitation frequency and a second excitation frequency respectively; detecting the characteristic parameters of the received two ultrasonic signals by the ultrasonic receiving probe; and calculating the gas holdup according to the first excitation frequency, the second excitation frequency, the pure liquid propagation velocity, the resonant frequency of bubbles in the two-phase flow, the bubble vibration damping and the characteristic parameters of the two ultrasonic signals. The ultrasonic probes are installed on the outer wall of the straight pipeline, and are not needed to be arranged in the two-phase flow in the pipeline, thus realizing non-contact measurement of the two-phase flow gas holdup. The data processing amount is very small, and flow of the two-phase flow in the pipeline is not hindered in the measurement process.

An ultrasonic atomizer with high antiscaling effect, high atomizing efficiency, and multiple installation directions is composed of an atomizer, an ultrasonic transducer arranged on the casing of atomizer, and an inclined reflecting plate in the front of ultrasonic transducer. It features that the surface of ultrasonic transducer can be put in liquid by a certain angle to prevent dirt deposition.

The invention relates to heat preservation doors and windows with conveniently-dismounted attached frames of the doors and windows. The heat preservation doors and windows comprise heat preservation doors and windows as well as attached frames of the doors and windows, wherein the attached frames of the doors and windows are connected with a building structure with openings to be mounted with the doors and windows through expansion bolts; the attached frames are provided with pitch-adjustable T-shaped pieces; the heat preservation doors and windows are clamped with the attached frames through processed mounting clamping grooves which are arranged outside window frames and the pitch-adjustable T-shaped pieces having adjustable screws; and sealing strips are additionally arranged on the outer edges of the attached frames and used for ensuring the sealing between the doors and windows and the attached frames after the installation. The heat preservation doors and windows provided by the invention have the advantages of simple structure, convenience for material processing, simplicity for installation and strong adjustability, besides, the attached frames of the doors and windows are mounted outside the doors and windows through elastic, weather-resistant, formed and heat-insulating sealing strips, the conventional gluing sealing technology is discarded, so that the installation is simpler and more convenient, the sealing effect and service life of the doors and windows are largely improved and prolonged respectively, meanwhile the energy saving and heat preservation effects of the doors and windows are also improved; moreover, mounting holes are unnecessary to punch on the doors and windows, therefore the air tightness and water tightness of the doors and windows are improved, and the processing steps are reduced.

A medium-voltage outdoor open-close type current transformer is disclosed. The current transformer comprises a winding, an upper iron yoke plastic frame and a lower half-frame-shaped iron core plastic shell; an upper iron yoke is correspondingly arranged in the upper iron yoke plastic frame; a half-frame-shaped iron core is correspondingly arranged in the lower half-frame-shaped iron core plastic shell; the upper iron yoke plastic frame is hinged with one side of the lower half-frame-shaped iron core plastic shell; the upper iron yoke plastic frame is connected with the other side of the lower half-frame-shaped iron core plastic shell through a rapid open-close connecting apparatus; an elastic sheet is integrally arranged at the bottom of an inner cavity in the upper iron yoke plastic frame; the elastic sheet supports the upper iron yoke of the half-frame-shaped iron core; and when the upper iron yoke plastic frame and the lower half-frame-shaped iron core plastic shell are buckled, the elastic sheet can enable the upper iron yoke and the iron core to be tightly fitted. The medium-voltage outdoor open-close type current transformer is good in insulation and dampproof performance, and extremely easy to install, detach and maintain; the tight fit of the iron core groups is ensured by the elastic sheet; the measurement precision is improved; and in addition, the current transformer is quite simple and convenient to install, capable of greatly reducing the installation time and improving efficiency and safety performance, and good in electricity-stealing-prevention performance.

The invention relates to an automatic change-over switch for two power sources. The automatic change-over switch comprises a control circuit board, a main breaker, an auxiliary breaker and a busbar device into which an A-phase copper bar, a B-phase copper bar, a C-phase copper bar and an N-phase copper bar are inserted in a connecting mode, wherein the busbar device is fixed inside an installation base. Two adjusters at the switching-on positions and a motor are fixed on a motor bracket, a driving rotary table to which an instrument part is connected in a riveting mode is clamped to a rotating shaft of the motor, two sliding arm guiding blocks are inserted to two pairs of inserting grooves of the sliding arm guiding blocks respectively, four sliding block sliding guiding rods are placed on two sliding block brackets respectively, and each sliding block bracket is provided with a sliding block in a buckling mode, wherein guiding columns are fixed on the sliding blocks. Sliding arms are placed on the two sliding arm guiding blocks and the two sliding blocks, the instrument part is arranged in rectangular holes of the sliding arms, the two guiding columns are arranged inside V-shaped strip holes of sliding arm faces, a mechanical switching-on indicator is fixed on the faces of the sliding arms, and a controller cover, a breaker cover and an installation bottom plate are fixed on the front face and the bottom face of the installation base respectively, wherein the controller cover is provided with an isolation electric lock. The automatic change-over switch has the advantages of being compact in overall structure, high in protection level, reliable and low in cost.

The invention discloses a method of calculating array back radiation quantity of a double-sided component. Radiation quantity of direct light and scattered light reaching a ground and reflecting to the back of the double-sided component is calculated based on a view factor process model and a component array spatial geometric relationship; radiation quantity of scattered light directly reaching the back of the double-sided component is calculated using a Perez semispherical scattering radiation model. The influencing factors of double-sided component array, such as mounting inclination, mounting height, mounting spacing, mounting azimuth, and aerial direct illumination to scattering intensity ratio, are considered herein, the total quantity of radiation received by the back of the double-sided component can be accurately calculated, and optimizing the mounting mode of the solar double-sided component can be aided in conjunction with a component front radiation quantity model.

The invention discloses a pipe joint structure, and relates to the technical field of pipeline engineering. The pipe joint structure is designed to solve the problems that an existing pipe joint structure is not reliable and the like. According to the pipe joint structure, positioning protruding rings are arranged on a first pipe end socket, positioning annular grooves are formed in a second pipe end socket, a pipe joint is comprehensively sealed through matching of the positioning protruding rings and the positioning annular grooves and through first sealing pieces between the adjacent positioning protruding rings, and the problem that leakage happens to the pipe joint can be effectively avoided; clamps are arranged outside the pipe end sockets, and hinged shafts of the clamps are fixed into joint fixing pieces so that the two pipe end sockets of the pipe joint can be effectively prevented from being disengaged and structure reliability and use safety of the pipe joint can be greatly improved; the first pipe end socket is matched with a clamping table of the corresponding joint fixing piece through a boss so that the first pipe end socket can be positioned, the second pipe end socket is connected with the corresponding joint fixing piece in a threaded mode, the installation method is more convenient, and production efficiency can be greatly improved.

A residential fire suppression system for providing an automated safeguard against a localized fire within a residential space. Comprised primarily of a mounting bracket, pressurized tank of fire retardant, a dispersal nozzle and motorized valve assembly, a smoke detector, and a fire detector, the self-contained self-actuated modular fire suppression unit mounts in the ceiling of a residential space and will detect smoke within the space below it and sound an audible alarm. Additionally, the unit detects fire within the space below and actuates a motorized valve assembly allowing the pressurized fire retardant stored in the tank to be expelled.

The invention relates to an electric heating module which comprises a heat insulation plate. A wire arranging groove with a groove opening facing upwards is formed in the upper surface of the heat insulation plate. A heat conduction layer is arranged on the upper surface of the heat insulation plate. Downwards-concave grooves are formed in the parts, provided with the wire arrangement groove, of the heat conduction layer. Thus, a wire arrangement groove does not need to be formed in a floor body, and the phenomenon that the floor body is subjected to layering and cracking due to grooving or direct contact with a heating wire can be avoided. The wire arrangement groove of the heat insulation plate can be formed when a heat insulation layer is formed, and subsequent grooving is not needed, so that liners can be produced in batches in a factory, the technological process of grooving is omitted, labor and material resources are saved, and the production efficiency is greatly improved. In addition, when a floor is installed, the electric heating module can be laid on the ground and then covered with the floor body, and the installation manner of the heating floor is more convenient than that of a traditional heating floor.

The invention discloses a slide valve type symmetric cylinder bidirectional hydraulic balance system and a hydraulic balance system. The hydraulic balance system is based on balance valves and is suitable for a double-acting symmetric cylinder with the negative load condition. The slide valve type symmetric cylinder bidirectional hydraulic balance system and the hydraulic balance system aim at solving the influence of the negative load condition possibly occurring in a hydraulic control system on a hydraulic system. The slide valve type symmetric cylinder bidirectional hydraulic balance system comprises the specially designed slide valve element type balance valves, and the balance valves are composed of valve bodies, slide valve elements, oil channels and the like and can be used pairwise. The system is effective on negative loads possibly appearing in two directions, and a bidirectional locking function or an oil cylinder floating function is achieved. According to the novel hydraulic balance system, when no negative load appears, throttling losses are very small. The designed balance valves and balance system are very simple in structure, very low in manufacturing cost and good in reliability, and are not sensitive to oil liquid temperature and cleanliness, and the balance performance and system safety of the hydraulic control system can be effectively guaranteed.

The invention discloses a wrist wearing device. The device comprises a main wrist wearing device body and a wrist strap; at least four fixing parts are arranged at the periphery of the main wrist wearing device body in the circumferential direction; the wrist strap is provided with several cooperation parts used for being connected with or separated from the fixing parts, and all the cooperation parts are arranged in sequence in the length direction of the wrist strap, so that the end of the wrist strap is wound through the cooperation part and fixed to the main wrist wearing device body. According to the wrist wearing device, the fixing parts are arranged at the periphery of the main wrist wearing device body, the cooperation parts are sequentially arranged on the wrist strap in the length direction, and by adjusting the connection number of the fixing parts and the cooperation parts, the length of the wrist strap is adjusted so that the wearing space formed by the wrist strap can beincreased or decreased. According to the wrist wearing device, connection stability of multiple parts can be achieved, and multi-gear adjustment of the wrist strap and the main wrist wearing device body can also be achieved; structurally, the wrist wearing device is provided with no redundant parts except for the main wrist wearing device body and the wrist strap, and more cost is reduced structurally; meanwhile, the installation and adjustment mode is simple, and the wearing and adjusting efficiency can be improved.

The invention discloses an environment-friendly green printing method which comprises the steps: impurity removal: in the advancing process of carriers, an impurity removal scraper can scrape impurities and plush on the surfaces of the carriers, an axial flow fan generates airflow, the impurities and the plush are adsorbed and conveyed into a filtering box body, and a dust filtering plate intercepts the impurities. The carriers such as paper, cloth or plastic used for printing can penetrate through the bottom end of the impurity removal scraper when moving forwards along the base, and the impurity removal scraper can conduct scraping and impurity removal treatment on the surfaces of the carriers, so that the plush and impurities adhering to the surfaces of the carriers in the production and transportation process are removed, the surfaces of the carriers are kept clean and flat, the situation that printing ink cannot be normally bonded to the surfaces of the carriers due to impurities and plush residues, and consequently printed patterns have flaws is avoided, it is ensured that printed works are kept complete, airflow is generated through an axial flow fan, the airflow flows upwards to directly suck and adsorb the plush and impurities scraped during impurity removal into a long-strip-shaped box body, and one side of the impurity removal scraper is always kept clean.

The invention provides a self-driven pin lock prestressed connecting structure and connecting method. The self-driven pin lock prestressed connecting structure comprises an inserting structure formed by a plug pin part and a locking part. Lock catches are arranged at the locking part; the plug pin part comprises a pin tube and a piston; the side wall of the piston slips in a mode of being attached to the inner side wall of the pin tube; a stepped-shaft-shaped plug pin end is arranged at one end of the piston, and the end face of the other end of the piston and the inner wall of the pin tube jointly enclose to be a first thrust cavity; the end, adjacent to the plug pin end of the piston, of the pin tube is open; a clamping ring is arranged at the opening end of the pin tube; when the plug pin end penetrates out from a clamping ring hole and stretches between the lock catches of the locking part, the plug pin end is fixed with the lock catches; the large diameter part of a stepped shaft of the plug pin end is attached to the clamping ring hole; the large diameter part of the stepped shaft, the inner wall of the pin tube and the clamping ring jointly enclose to be a second thrust cavity; a pressing stress grouting hole is formed in the side wall of the first thrust cavity; and a pulling stress grouting hole is formed in the side wall of the second thrust cavity. The economic prestressed connecting structure can be achieved rapidly and conveniently in an inserted connection mode.

The invention discloses an infrared transponder and an infrared intelligent control system. The infrared transponder comprises a functional module in which a micro-control unit and an infrared receiving and transmitting pipe are arranged, and the infrared receiving and transmitting pipe and the micro-control unit are in communication; the micro-control unit is configured to transmit an infrared instruction to the infrared receiving and transmitting pipe according to a received control signal; the infrared receiving and transmitting pipe is configured to transmit an infrared control signal to a controlled intelligent device according to the infrared instruction of the control unit; the infrared transponder is of a patch structure as a whole and suitable for being installed at a preset distance of the controlled intelligent device. The installing mode of the infrared transponder is quite easy and convenient, and the installing position can be flexibly selected. Compared with a traditional infrared transponder, installing complexity and installing cost are greatly reduced.

The invention relates to the technical field of power transmission equipment, and discloses an insulator type lightning arrester. The insulator type lightning arrester comprises an iron tower side fitting, a core rod, a wire side fitting and a hollow lightning arrester body with a gap. The iron tower side fitting and the wire side fitting are connected to the two ends of the core rod in a pressed mode respectively, and the core rod is sleeved with the hollow lightning arrester body with the gap. According to the insulator type lightning arrester, the functions of insulators and lightning arresters are achieved at the same time through the structure height equivalent to common insulator bunches, and the good equipment size and the good performance index are achieved.

The invention discloses a TV stand, the angle of which can be adjusted. The TV stand comprises a TV bracket and a support of the bracket; an angle demodulator is connected between the TV stand bracket and the support; the angle demodulator comprises a motor; a crank is installed on an output shaft of the motor; a connecting rod is movably connected to the crank; the support is fixedly connected with the motor of the angle demodulator; the TV bracket is hinged with the connecting rod of the angle demodulator, or the TV bracket is fixedly connected with the motor of the angle demodulator; and the support is hinged with the connecting rod of the angle demodulator. The TV stand has the advantages of simple structure, light weight, low cost, easy manufacture, less possibility of abrasion and convenient maintenance.

The invention discloses a washing machine. The washing machine comprises a box body and a disc base installed on the upper portion of the box body, and the disc base is arranged on the box body in a turnable mode. The disc base is arranged on the box body in the turnable mode, the maintenance efficiency is improved, the disassembling and assembling time in the maintenance process is shortened, andthe labor cost expenditure is lowered; when factory assembling is conducted, the whole machine assembling efficiency is improved, the disc base installation mode is convenient, the time is saved, thereliability is high, and the whole disc base turnover structure does not affect other assembling parts; after the disc base slides a certain distance relative to the box body, and the disc base is overturned relative to the box body; a locking unit is arranged between the disc base and the box body, the whole machine is protected, non-maintenance staff are prevented from disassembling the disc base, the disc base and the box body achieve screw-free connection, the connection strength of the disc base and the box body is not affected, and the attractiveness is improved.