101results about How to "Structure is clear and easy to understand" patented technology

The invention discloses a double-steel-plate shear wall combined structure. The double-steel-plate shear wall combined structure is formed by one or a plurality of double-steel-plate wall units and end members which are welded, concrete is poured into cavities formed by the double-steel-plate wall units and the end members, each double-steel-plate wall unit is formed by two steel plates and a connecting part which are welded, and the connecting part is arranged between the two steel plates. The cross section of the double-steel-plate shear wall combined structure can be in a straight line or L or T or Z or U shape. The double-steel-plate wall units and the end members can all be manufactured in a factory, welding operation and cutting operation can be finished by automatic equipment, a processing speed is quick, materials are saved, and the labor cost is saved. The double-steel-plate wall unit and the end members are utilized as concrete formworks, so that formwork construction is avoided, and the double-steel-plate shear wall combined structure is quick in constructing speed, convenient to construct and environmentally friendly.

The invention discloses a pressure chamber testing device and testing method for monitoring rock breaking multivariate precursory information. The pressure chamber testing device includes a pressure chamber designed for anti-seepage sealing, wherein the pressure chamber is connected with an upper pressure plate tension transfer column system; a sample and a monitoring element are arranged inside the pressure chamber; the monitoring element is connected with data acquisition equipment outside the pressure chamber; the sample inside the pressure chamber is connected with the upper pressure plate tension transfer column system; the upper pressure plate tension transfer column system is connected with a header of the pressure chamber; a water pressing pipe is connected with the bottom of the sample; a base is arranged at the bottom of the pressure chamber; a confining pressure water inlet pipeline is arranged inside the base, and is communicated to the chamber body of the pressure chamber. According to the invention, the pressure chamber can be tested inside the chamber under the combined action of the confining pressure and water pressure on rock, so that the whole rock breaking process is visualized; besides, an osmotic pressure sensor, an acoustic emission sensor and an electrical resistivity sensor are all arranged on the sample to monitor the evolution law of breaking precursory information of rock under the action of the water pressure and the confining pressure, as a result, the rock breaking multivariate precursory information can be monitored under the action of water pressure.

The invention provides an adjustable impact test device and a method. According to the device, an upper central rolling shaft is fixed on a reaction wall of a test room, four groups of round steel rods with thread at two ends serve as rigid connection rods, abutting of the connection rods is realized via abutting nuts, bottom connection rods fix a circular disk pendulum bob on the connection rods via insertion plates at the end parts, a set of pendulum bob system is formed together with the upper rolling shaft, and the connection rods can be used for conveniently adjust a position of the pendulum bob on a different impact point. A clamp is arranged at a pendulum bob impact point for mounting a pressure sensor, a lifting hole and mounting holes are reserved in the middle of the upper part of the pendulum bob, a loading hole is reserved 45 degrees obliquely, and a steel wire rope passes through the loading hole and sleeves an X-shaped sliding hook. A first hand chain hoist is used for adjusting the pendulum bob, the sliding hook is used for fixing the pendulum bob at an initial height, a second hand chain hoist is used for pulling the sliding hook to release the pendulum bob, gravity potential energy of the pendulum bob is converted to kinetic energy, a specimen is impacted, and through changing the initial height of the pendulum bob and the pendulum bob of different masses, different impact speeds and energy can be conveniently and quickly provided.

The invention discloses a cutting device for mechanical engineering. The cutting device for mechanical engineering comprises a base, wherein the bottom end face of the base is connected with a plurality of supporting columns, the left side and the right side of the upper end face of the base are connected with fixing columns, the upper ends of the fixing columns on the left side and the right sideare connected with a top plate, the top plate is provided with a cutting device, the left side of the fixing column on the left side is provided with a cooling device, the middle of the upper end face of the base is provided with a material groove, and the material groove is arranged between the fixing columns on the left side and the right side. The cutting device is simple in structure, clear and easy to understand in structure, powerful in function, simple in product clamping operation, easy in material conveying, good in cutting effect, high in cutting quality, long in service life and worthy of popularization due to heat dissipation carried out through air flow and cooling liquid.

The invention discloses a special protector for football sports of children. The protector comprises a protector body, wherein the protector body comprises a knee cap part and a leg guard part; an ankle protection part is arranged below the leg guard part; the knee cap part is connected to a first winding belt; and the leg guard part is connected to a second winding belt. According to the protector, the structure is simple, the structure is clear and easy to understand, the knee, the calf and the ankle are protected through the knee cap part, the leg guard part and the ankle protection part respectively, the knee cap part and the leg guard part are respectively fixed through the first winding belt and the second winding belt, the ankle protection part is worn, the wearing is convenient, the protection structure is light, and the protector is worthy of popularization.

The invention discloses a dust removal and humidification device for an automatic textile machine. According to the dust removal and humidification device for the automatic textile machine of the invention, a textile product enters a dust removal box from a left side feeding channel of the dust removal box and is subjected to the simple dust removal and fluff elimination of a feeding brush; afterthe textile product enters the dust removal box, an air blower and a negative pressure fan are turned on, and the air blower and the negative pressure fan remove and discharge impurities such as dustand fluffs in the textile product through a dust blowing pipe and a dust suction pipe, and then the textile product exits from a discharging channel, and is simply cleaned by a discharging brush, andat this moment, the textile product is a dust-removed product; a water pump is turned on, the water pump pumps water in a water tank into a water entering pipe through a water drawing pipe; and waterflow is converted into water mist by means of the effect of an ultrasonic atomizer, and the water mist enters the discharging channel to humidify the textile product. The dust removal and humidification device for the automatic textile machine has the advantages of simple structure, integrated dust removal and humidification, clear and easy-to-understand structure and simple operation. With the dust removal and humidification device for the automatic textile machine adopted, good dust removal and humidification effects can be realized for the textile product, pollution and equipment failure can be avoided, and a cooling effect can be achieved.

The invention relates to a hybrid energy dissipation vibration damping device which comprises an inner-layer tube body, an outer-layer tube body, a buffering material, damping particles, a center rotary shaft, a spring, a connection bearing, a hanging device, a guide rail and an installation device of the guide rail, wherein the buffering material is arranged between the inner-layer tube body and the outer-layer tube body, the damping particles are arranged in the inner-layer tube body, and the center rotary shaft is provided with stirring blades. The inner-layer tube body is connected with the outer-layer tube body through the spring and connected with the center rotary shaft through the connection bearing. A damper is connected with a structure through the hanging device or the guide rail and the relevant devices, the stirring blades are driven to rotate around the center rotary shaft by means of rotation and rolling of the pipe bodies, and friction rolling of the damping particles in the cavity of the inner-layer tube body is aggravated. By utilizing various hybrid energy dissipation mechanisms including solid phase collision and friction energy dissipation, vibration response energy dissipation of quality blocks and the like, the hybrid energy dissipation vibration damping device has great advantages compared with vibration damping devices adopting the single energy dissipation principle.

The invention discloses a physical training device. The physical training device comprises a bottom board, supporting stand columns are fixedly arranged on the left side and the right side of the upper end face of the bottom board, a cross rod is connected between the upper ends of the supporting stand columns on the left side and the right side, a lying board is arranged between the supporting stand columns on the left side and the right side, first guiding devices are fixedly installed on the left side and the right side of the bottom end face of the cross rod right over the lying board, second guiding devices are fixedly arranged at the positions, close to the supporting stand columns, of the left side and the right side of the bottom end face of the cross rod, and a stretching device is fixedly installed in the middle of the upper end face of the bottom board right below the lying board. The structure is simple, a trainer lies on the lying board to pull pulling rope springs throughstretching handles and pulls repeatedly to achieve physical stretching training. Meanwhile, the trainer can sit on the lying board or pulls by using two legs so as to realize multi-position and all-round physical training plans. In addition, the lying board is suspended and supported in the air through pulling ropes, the height of the lying board can be adjusted by adjusting the positions of connection insertion blocks, and the physical training device is applicable to different groups of people and convenient to operate.

The invention discloses an unmanned aerial vehicle for fire fighting. The unmanned aerial vehicle comprises a vehicle head, wherein the outer surface of the periphery of the vehicle head is provided with a plurality of lift-drop mechanisms. According to the invention, the unmanned aerial vehicle is simple, clear and easily-understandable in structure and easy to operate; through lift-drop devices,the whole vehicle is driven to fly up and down; supporting devices have telescopic buffering effects, so the unmanned aerial vehicle has stable structure; fire extinguishing bombs are released through the action of gravity and stored through a storage pipe, so the unmanned aerial vehicle has large capacity and large one-time fire-extinguishing range; in addition, an alarm light is electrically connected with an infrared temperature-sensing probe, and when the infrared temperature-sensing probe detects that a temperature of a position close to the vehicle is over-high, the alarm light alarms,so the unmanned aerial vehicle is prevented from going deep into a fire field; and a mounting groove is arranged in the middle of the rear end surface of the vehicle head and internally provided witha camera, and the position of the opening of the mounting groove is provided with high-temperature-resistant transparent glass for feedback of the situations of the fire field and accurate throwing ofthe fire extinguishing bombs.

The invention discloses a self-cleaning device of a scrubber. A scrubber shell is included; a cleaning base is arranged below the scrubber shell; the cleaning base is in a frame shape with an openingin the bottom end face. A connecting rod is arranged between the middle of the upper end surface of the cleaning base and the bottom end surface of the scrubber shell; an air blowing device, a brushing device, a water spraying device and a dust suction device are sequentially arranged in the cleaning base from left to right. The self-cleaning device is simple in structure, clear and easy to understand in structure, high in integration, complete and efficient in cleaning function and easy to operate, is of a cleaning structure automatically controlled by a motor and a pump, can conduct efficient cleaning at a time through dust collection, water spraying, brushing and air blowing drying in sequence, and is high in efficiency and good in cleaning effect.

The invention discloses a double steel plate and concrete composite wall. The double steel plate and concrete composite wall comprises a double-steel-plate layer and a concrete layer; the double-steel-plate layer comprises a first steel plate and a second steel plate which serve as formworks of concrete, the concrete is poured and then solidified, and then the concrete layer is formed; transversestuds and longitudinal stiffening ribs are welded to the inner surfaces of the first steel plate and the second steel plate, connecting parts are arranged on the longitudinal stiffening ribs of the second steel plate, and longitudinal studs are welded to the positions, corresponding to the longitudinal stiffening ribs of the first steel plate, of the other ends of the connecting parts; and the longitudinal studs can penetrate though circular holes and thus fix the first steel plate and the second steel plate. According to the double steel plates in the double steel plate and concrete compositewall, the lateral stiffness of the composite wall can be improved, seismic performance can be improved, the anti-impact and anti-knock capacity of the composite wall can further be enhanced, and thestructural emergency capacity can further be improved; and the double steel plate composite wall is easy to constitute, all the components can be prefabricated and produced in advance, a constructionsite adopts full-connecting-piece assembly, flexibility is high, construction is convenient and fast, the cost is low, and promotion is facilitated.

The invention discloses a convenient-twist-adjustment yarn stranding device. The device comprises a base; a bottom plate is fixedly connected with the upper end face of the base; the base is arrangedon the right side of the bottom of the bottom plate; a vertical plate is fixedly connected with the center of the upper end face of the bottom plate; a top plate is fixedly connected with the upper end of the vertical plate; a rotating disc is arranged on the left side of the vertical plate; a plurality of spools are arranged on the upper end of the rotating disc; a first motor is installed on theleft side of the bottom end face of the bottom plate; an output end of the first motor is fixedly connected with the bottom end face of the bottom plate; a control panel is installed on the left sideof the first motor; and the control panel is electrically connected with the first motor. The structure is simple, and the constitution is clear and easy to understand. Via the arrangement that the control panel controls the rotating speed of the first motor, the yarn feeding speed of the spools is controlled, so the twist is adjusted. Furthermore, lifting adjustment of a twisting buckle is controlled to further realize twist adjustment. The adjustment precision is high, the degree of automation is high, the operation is simple, the yarn twisting efficiency and twisting quality are improved,and the device is worth popularization.

The invention discloses a novel 110 construction method gangue blocking supporting structure. The novel 110 construction method gangue blocking supporting structure comprises a mountain body and an ore body, a top beam is connected between the mountain body and the ore body, a plurality of supporting columns are connected between the mountain body and the ore body, the upper ends of the supportingcolumns are fixedly connected with the top beam, a roadway is arranged between every two adjacent supporting columns, a side protection assembly is installed on the right side of the mountain body, aplurality of anchor rods are inserted in the ore body, and anchor cable is inserted in middle of the ore body. The structure is simple, the construction is clear and easy to understand, the top beamis connected between the mountain body and the ore body, the plurality of supporting columns are connected between the mountain body and the ore body, the upper ends of the supporting columns are fixedly connected with the top beam, the side protection assembly is installed on the right side of the mountain body and used for supporting protection of the mountain body, the anchor rods and the anchor cable are used for fixing a right support plate in the roadway, pi-shaped steel combined support can prevent lateral impact force and improve the lateral support effect, an inclined single prop is connected with the left side of the top beam, the lateral protection effect is further improved, disassembly and assembly are convenient, the structural strength is high, and the novel 110 constructionmethod gangue blocking supporting structure is worthy of popularization.

The invention discloses an automatic fish meat processing and production combined machine. The machine includes a first conveying box; a feeding frame is arranged above the left end face of the firstconveying box; a first conveying device is arranged at the bottom in the first conveying box; a second conveying box is arranged on the front side of the right end surface of the first conveying box;a second conveying device is arranged in the second conveying box; a pushing device is arranged on the rear side of the right end surface of the first conveying box; a water spraying device is arranged on the front side of the right end surface of the second conveying box; a discharging opening is formed in the right end surface of the second conveying box; and a material conveying channel is arranged between the first conveying box and the second conveying box. The machine is simple in structure and clear and easy to understand in structure, fish are conveyed through the first conveying device and the second conveying device, head cutting, belly cutting, belly scraping and spray washing of the fish are achieved in the conveying process, the combined production and processing of the fish is achieved, the operation is easy, the automation degree is high, labor cost and equipment cost are reduced, and the fish meat processing and production efficiency is improved.

The invention discloses an intelligent moxa-moxibustion massage abdomen-kneading instrument. The middle part of the upper end face of a housing is provided with a moxa cone entrance; a vertical frameis arranged in the housing; an annular rack is arranged in the vertical frame; a moxa cone screen frame is vertically arranged at the middle part of the annular rack in a penetrating manner; lifting plates extend outwards at the left end and right end of the annular rack; an annular seat ring integrally extends at the upper end of the moxa cone screen frame; the annular seat ring is put on the annular rack in a contact manner; a moxa cone is placed in the moxa cone screen frame; and the left end and the right end of the moxa cone screen frame are fixedly connected with the lifting plates. Theinstrument has a simple structure, a good moxa-moxibustion effect, is convenient to use, and has a safe moxa-moxibustion effect, and the structure is clear and is easy to understand; temperature control can be realized; the temperature control and adjustment can also be performed through voice control; in addition, dense smoke produced by moxa cone burning can be removed by a smoke removing head to avoid choking of people and to reduce harm; massage can be performed through a massage assembly, and the human body can be automatically massaged; and the instrument realizes the function of automatically applying massage oil quantitatively, and is worthy of being popularized.

The invention discloses a double side printed wiring board. The double side printed wiring board includes a wiring board body; left and right sides of the wiring board body are provided with upper fixation frames and lower fixation frames; an upper connection frame and a lower connection frame are respectively disposed above the upper fixation frames and below the lower fixation frames; an intermediate heat dissipation device is disposed between the upper fixation frames on the left and right sides of the wiring board body; the intermediate heat dissipation device is disposed between the lowerfixation frames on the left and right sides of the wiring board body; external heat dissipation devices are mounted on the upper connection frame and the lower connection frame; a structure is simple, construction is clear and easy to understand, and the fixation frames and the connection frames outside the wiring board body of the invention are detachably installed to facilitate installation ofthe wiring board body; the wiring board body is placed on the innermost side of a whole body, and protective properties are good; and a double-layer wiring board generates more heat during operation,the outside of the wiring board body is provided with the intermediate heat dissipation devices and the external heat dissipation devices for heat dissipation, efficient heat dissipation of heat dissipation board bodies is achieved by rotation of blades driven by separately water flow circularly flowing in a cooling pipe, heat dissipation boards and micro motors, and the service life is improved.

The invention discloses a wood trepanning machine. A left bottom plate is included. The right end of the left bottom plate is integrally connected with a vertical plate. The upper end of the verticalplate is integrally connected with a right bottom plate. A supporting base is connected to the bottom end faces of the left bottom plate and the right bottom plate. The right bottom plate is providedwith a trepanning device, and the left bottom plate is provided with a wood clamping moving device. The structure is simple, and the construction is clear and easy to understand. Through the wood clamping moving device, wood clamping can be achieved, position adjustment can be conducted on wood, the wood trepanning machine can adapt to positions different in width and size, practicability is high,the trepanning device is used for trepanning, operation is simple, and the wood trepanning machine is worthy of popularization.

The invention discloses a bottom protective device of a lift shaft. The bottom protective device of the lift shaft comprises a bearing plate. When a lift falls, the lift can fall to the upper side ofthe bearing plate, the upper end face of the bearing plate is provided with a buffering mat, so that direct impact is avoided, steel cables on the lower side of the bearing plate can be tensioned at the moment, heavy blocks in bearing boxes are pulled to move upwards through guide devices, upper buffering springs can shrink at the moment, lower buffering springs can be straightened, and then partof falling force is absorbed. In addition, when the bearing plate makes contact with supporting blocks, hydraulic cylinders and buffering springs can generate upward supporting force, so that the falling speed is further lowered. In this way, the bottom protective device of the lift shaft is simple in structure and clear and simple in constitution, decomposes, disperses and absorbs the falling force of the lift and prevents disasters.

The invention discloses a rapid adjustment type full-automatic paper cutting machine. The rapid adjustment type full-automatic paper cutting machine comprises a paper cutting frame, a paper cutting base is installed in the paper cutting frame, a feeding conveying belt and a discharging conveying belt are rotationally installed at the left end and the right end of the paper cutting base respectively, a plurality of conveying rollers are rotationally installed on the upper end face of the paper cutting base, and a transverse groove is formed in the upper side wall of the paper cutting frame in a penetrating mode; and transverse guide rails are installed on the front side and the rear side of the transverse groove, mounting plates are slidably installed on the transverse guide rails on the front side and the rear side, and a first stretchable motor is installed on the left side of the transverse groove. The paper cutting machine is simple in structure and clear and easy to understand, the position of a cutter can be adjusted, paper cutting operation is convenient, the angle of the cutter can be adjusted, it is guaranteed that the cutter is kept perpendicular, it is guaranteed that a cut of paper is smooth, and the paper cutting quality is improved; and in addition, chippings and fly ash generated in the paper cutting process can be collected, the paper cutting environment is prevented from being polluted, workers are protected, the functionality is high, and the paper cutting machine is worthy of popularization.

The invention discloses a special phacoemulsification instrument for ophthalmic treatment. The phacoemulsification instrument comprises an ultrasonic handle and a controller, the ultrasonic handle isconnected with a peristaltic pump, the peristaltic pump is connected with a general assembler, an emulsion bottle, a pressure sensor and an ultrasonic generator are respectively connected outside thatgeneral assembler, the pressure sensor is connected with a negative pressure generator, a waste liquid recovery device is arranged outside the negative pressure generator, the structure is simple, the structure is clear and easy to understand, the problems of large operation incision, uncontrollable intraocular pressure and low intelligence degree are solved, the heating of an ultrasonic probe during operation is avoided, the anterior chamber depth is maintained constant, the invention has multiple functions, small incision, good treatment effect and intelligence, and is suitable for microwave treatment fields. In addition, it is very convenient to adjust the suction of chylous fluid and the injection of intraocular perfusion fluid through flow regulator, thus maintaining the dynamic balance of intraocular fluid, which is worth popularizing.

The invention discloses a fish tank aeration device. The device comprises an aeration purifying box, water in a fish tank body can be pumped out by a first water pump through a water pumping pipe, filtering is conducted by a filtering plate, fine dust in water is purified by a purifier, and the water flows into a water storage chamber after flowing out of a water outlet head, so that all the waterin the water storage chamber is cleaned water; oxygen is pumped into a second water outlet pipe by an oxygen pump through an air inlet pipe, oxygen and the cleaned water in the second water outlet pipe enter an aeration head through the air inlet pipe, enter an oxygen inlet chamber in the aeration head and are discharged out from a through hole, and therefore circulation aeration and water purifying are achieved. The fish tank aeration device has the advantages that efficient circulation water purification and oxygen supplying can be achieved, circulation purifying filtering is conducted on water in a fish tank in the aeration process of the fish tank body, the structure is simple, the construction is clear and can be understood easily, the function is comprehensive, and the cost performance is high.

The invention discloses a positioning clamping fixture of a vertical shaft sleeve. The positioning clamping fixture comprises a base, wherein the upper end surface of the base is provided with a lowerclamping plate, the left and right sides of upper end surface of the lower clamping plate are fixedly provided with supporting columns, an upper clamping plate is slidably arranged between the supporting columns at the left and right sides of the upper end surface of the lower clamping plate, the left and right sides of the upper clamping plate are provided with rotating rods, the lower ends of the rotating rods are connected with the lower clamping plate, and the upper ends of the rotating rods are fixedly connected with turning handles. The fixture has the advantages that the structure is simple, clear and easy to understand, a clamping head can be adjusted according to diameter and height of the vertical shaft sleeve, and the practicability is high. The vertical shaft sleeve is clampedthrough a sleeve rod clamping head and a sleeve rod, so that the clamping effect is good, the positioning clamping fixture is convenient to disassemble and assemble, and the cost performance is high.

The invention discloses an efficient grinding device for mechanical casting production. The device comprises a bottom cabinet, vertical columns are fixedly connected to the periphery of the upper end face of the bottom cabinet, a top frame is connected between the upper ends of the vertical columns on the periphery, a feeding opening is formed in the bottom end face of the top frame, a grinding device body is installed in the top frame, and the outer surfaces of the vertical columns are sleeved with sliding sleeves. A lifting plate is connected between the sliding sleeves on the periphery, a positioning device is installed on the upper end face of the lifting plate, the structure is simple, the structure is clear and easy to understand, a mechanical casting is placed on the lifting plate, a mechanical assembly is clamped and fixed through the positioning device, then the mechanical casting enters the top frame from the feeding opening, and the surface of the mechanical casting is ground through the grinding device body. The device is good in grinding effect, convenient to position, high in automation degree, high in grinding adaptability, good in grinding and dust removing effect, convenient to move, high in functionality and worthy of popularization.

The invention relates to a rotary cutter assembly of a rotary cultivator. The rotary cutter assembly comprises a transverse plate, wherein moving rollers are arranged at the left and right sides of the lower side of the transverse plate; a middle soil turning device is arranged between the moving rollers positioned at the left and right sides; a support frame is rotationally connected between thetransverse plate and the front and back ends of a center shaft of each moving roller. The structure is simple; the structure is clear and is easy to understand; the whole moves through the moving rollers; soil turning shovels are arranged on the surfaces of the moving rollers; the soil turning effect is achieved in the rotating process; the middle soil turning device is matched, so that the soil turning efficiency and the soil turning quality can be improved; the middle soil turning device can be subjected to lifting control; the operation is convenient; in addition, in the soil turning process, a great amount of clay can be stuck on the surface of soil turning cutter blades, and the soil turning effect is influenced, so that the soil turning cutter blades can pass through cutter blade grooves in the rotating process; the clay is blocked for simple cleaning through a clay blocking plate; the surface of the soil turning cutter blade cannot be adhered with the great amount of clay; the soil turning effect is ensured.

The invention discloses a chopping device for pueraria mirifica microparticles. The device includes a machine case. A feeding mouth is disposed on an outer upper side of the left end surface of the machine case; a feeding device is disposed outside the feeding mouth; and a plurality of supporting columns are disposed at a bottom end surface of the machine case. Through adoption of the chopping device, to-be-cut materials are fed from the feeding device, one-time feeding capacity is increased, thus improving the efficiency; a simple cutting operation of a compression roller is performed beforechopping actions of stirring cutters are conducted, so that the chopping effect is more stable and reliable, and a condition of cutting missing, and the like does not occur; and therefore, the chopping device is simple in structure, is clear and understandable in structure, and can meet the requirement of mass chopping; and danger caused by manual operation is prevented, the cost is reduced, and the working efficiency is improved.

The invention discloses an elevator cleaning device. The elevator cleaning device comprises a top plate and a bottom plate. An electric telescopic rod can drive a side plate to move left and right along a sliding rail in an elevator car; the end faces, between protrusions of the front side and the rear side, of the upper end face and the lower end face of the side plate are provided with cleaningbrushes; the cleaning brushes clean the top plate and the bottom plate; dust and impurities fall into a collection chamber to be collected through a dust outlet after cleaning; after a period of time,the dust and impurities in the collection chamber are discharged through a dust outlet pipe; in addition, air is pumped by a fan into the elevator car through an air outlet pipe, air sucked by the fan and discharged air are filtered through a filter box and a filter screen correspondingly, influences on human respiratory tracts are avoided, and the air quality is ensured. Therefore, the elevatorcleaning device is simple in structure and clear and intelligible in configuration and has an excellent automatic cleaning effect, the environment in an elevator is ensured, and harm to human bodies is avoided.

The invention discloses a flow distribution / non-flow distribution sample inlet carrier gas control system of a capillary gas chromatograph instrument. The system comprises a system control unit in which parts such as an analog-digital converter, a digital-analog converter, a single chip and an output serial port are arranged, a sample inlet pressure controller connected with the analog-digital converter and the digital-analog converter, a spacing cushion purge flow controller connected with the output serial port, a flow distribution / non-flow distribution sample inlet with one end connected with the sample inlet pressure controller and the other end connected with the spacing cushion purge flow controller, and a chromatographic column connected with the flow distribution / non-flow distribution sample inlet. The system is simple and easy to understand in overall structure, clear in construction, good in anti-jamming capability and easy to maintain; the problems of jamming resistance, high debugging difficulty and the like in the design of a discrete device and a large amount of manpower and material resources in calibration and the like of a sensor part in a production process are avoided.

The invention discloses a display screen convenient to install. The display screen convenient to install comprises a base, a supporting rod is fixedly connected with the upper end surface of the base,a lifting adjusting device is arranged above the supporting rod, a mounting block is arranged on the right side of the supporting rod, inclined rods are fixedly connected with the peripheral end surfaces of the mounting block, a display screen body is arranged on the right side of the mounting block, and a clamping mechanism is arranged at the end, away from the mounting block, of the inclined rods. The structure is simple, the composition is clear and easy to understand, the display screen is clamped and installed through a clamping head connected with a torsional spring, the installation isconvenient, the structure is stable and firm, an abutting block and a buffering cushion are connected with the display screen in an abutting mode, and the connection stability is reinforced. In addition, the angle of the display screen can be adjusted at will through the arranged ball pins, the display screen can be controlled to ascend and descend through the screw rod, the installation and adjustment are convenient, and the display screen is worthy of popularization.

The invention discloses an outdoor ring main unit with dehumidification and heat dissipation functions, wherein the outdoor ring main unit comprises a bottom plate; the upper end surface of the bottom plate is fixedly connected with a box body, the rear end surface of the box body is provided with a box door, the outer surface of the box body is sleeved with a dehumidification assembly, the upper end of the box body is fixedly connected with a rectangular frame, and the upper end of the rectangular frame is integrally connected with a rain baffle; and the rectangular frame is internally provided with a heat dissipation component. The structure is simple, the structure is clear and easy to understand, the box body is fixedly arranged on the bottom plate, and the outer surface of the box body is sleeved with the dehumidification assembly used for dehumidification operation in the box body;the rain baffle is used for shielding rain, the heat dissipation assembly is mounted in the rectangular frame and used for ventilation heat dissipation of air in the box body, and the dehumidification and heat dissipation effects are extremely good; and the service life of the ring main unit is greatly prolonged, functionality is high, and popularization is worthy.