43results about How to "Stable design structure" patented technology

The invention discloses a cross beam type power assembly suspension device. The cross beam type power assembly suspension device comprises a front suspender and a rear suspender, wherein one end of the front suspender is fixedly connected with an engine shell, the other end of the front suspender is fixedly connected with frame longitudinal beams, two ends of the rear suspender are fixedly connected with the frame longitudinal beams, the middle part of the rear suspender is fixedly connected with the middle part of a gearbox shell side plate, the rear suspender comprises mushroom-shaped cushion assemblies, rear suspender brackets and an arc-shaped cross beam, two ends of the arc-shaped cross beam are respectively and fixedly connected with the top ends of two mushroom-shaped cushion assemblies, the middle parts of the mushroom-shaped cushion assemblies are fixedly connected with the frame longitudinal beams at the same side through the rear suspender brackets, transition connecting supports are arranged between the mushroom-shaped cushion assemblies and the arc-shaped cross beam, and the top parts of the mushroom-shaped cushion assemblies are fixedly connected with the middle part of the gearbox shell side plate through the transition connecting supports. Due to the design, the longitudinal span of a whole vehicle between the front suspender and the rear suspender is increased, the vibration isolation performance is good, and the assembling space is not occupied.

The invention relates to a color 3D printer aiming to solve the technical problems that in the prior art, the requirement of a 3D printer for part cooperation is high, the 3D printer is damaged easily, and is inconvenient to maintain, when multi-color printing is carried out, colors of materials are mixed unevenly, and color 3D printing can not be completed. The color 3D printer comprises a sprayer and a printer body. The sprayer comprises a heating and mixing assembly and at least two feeding assemblies. The printer body comprises a rack, a tray installed on the rack, an X-axis moving mechanism and a Y-axis moving mechanism, wherein the X-axis moving mechanism and the Y-axis moving mechanism control the tray to move. The rack is further provided with a Z-axis moving mechanism for controlling the sprayer to move. The X-axis moving mechanism, the Y-axis moving mechanism and the Z-axis moving mechanism form a Cartesian coordinate system. The color 3D printer has the advantages that color 3D printing can be achieved without replacing the sprayer; all the parts are convenient to assemble and disassemble; three stepping motors are used for controlling silk conveying in three directions, locating is stable, and maintaining and replacing of the later period are convenient, and the whole process is high in automation degree.

The invention provides a net cage model test platform which is characterized in that two platform main beams stretch across rails and move through towing of a trailer. A platform framework is formed by the platform main beams via longitudinal connecting rods and transverse connecting rods through connection. The middle of the platform frame is provided with connecting supports which are used for installing a volume measuring instrument. The four corners and the front part of the platform framework are provided with clamping plates which are used for installing photographing rods and towing rods. One side of the platform framework is provided with a lateral photographing operation rod. Waterproof cameras are adopted to act as cameras which are provided with LED lighting lamps and fixed at the bottom part of the photographing operation rod. The top part of each towing rod is provided with a tension sensor bracket which is used for placing a tension sensor, and the bottom part of each towing rod is provided with slide wheels which act as transmission devices of tension steel ropes of a model test. Multi-angle model images are transmitted to a display end by the photographing devices arranged at the four corners and the sides of the platform. Tension data are measured by the tension sensors and transmitted to the computer display end and the data are read in real time and saved. The whole platform structure is connected with the tail part of the trailer via a connecting device arranged at the front end.

The invention discloses a high-speed rail large box girder internal formwork cleaning device. The cleaning device comprises rolling brushes used for cleaning the surface of an internal formwork and further comprises a frame body capable of moving along a rail, wherein a top cleaning device capable of moving transversely is arranged on the upper side of the frame body, side cleaning devices capable of moving longitudinally are arranged on the two sides of the frame body, a spraying device is arranged on one side of the frame body, the frame body comprises stand columns vertically arranged on the two sides and a truss arranged at the tops of the two stand columns, inverted-splayed track frames matched with the side wall of the internal formwork in shape are arranged on the inner sides of the two stand columns, the top cleaning device is arranged on the truss, and the side cleaning devices are arranged on the track frames on the two sides. The cleaning device has the advantages that due to the arrangement of splicing joints, the length of the truss can be changed, high-speed rail large box girder internal formworks of different specifications can be cleaned, the one-to-many cleaning function requirement can be met, and due to the arrangement of adjustable brush arms, the cleaning device can adapt to the size change or angle change of the girder shape.

The invention provides a main shaft grounding device which comprises a main shaft and a shell which sleeves the main shaft. The shell is provided with a main shaft grounding device which comprises a fixed plate and a movable plate. The fixed plate is fixedly connected with the shell. The bottom surface of the fixed plate is connected to the top surface of the movable plate through three paralelly arranged expansion springs. The bottom surface of the movable plate is provided with at least two carbon brush holders. Carbon brushes are fixed in the carbon brush holders, the bottoms of the carbon brushes are in contact with the outer surface of the main shaft, and the top of the carbon brushes are connected to a grounding wire. The main shaft grounding device has the advantages of a simple structure, a stable connection, convenient maintenance, and the long service lives of carbon brushes.

A birdcage type vehicle body skeleton structure comprises a front wall assembly, a rear wall assembly and a top cover assembly, wherein the two ends of the top cover assembly are connected with the upper ends of the front wall assembly and the rear wall assembly; the lower ends of the front wall assembly and the rear wall assembly are connected with a chassis assembly; the side part of the chassis assembly is connected with the top cover assembly through a side wall assembly; the top cover assembly comprises a plurality of parallel top cross beams; the side wall assembly comprises a plurality of parallel side wall vertical beams; two ends of the top cross beams are connected with tops of the side wall vertical beams, and the top cross beams and the side wall vertical beams form an integrated structure; a plurality of embedded beams are arranged on the side wall assembly and the rear wall assembly; and stiffening beams running through the periphery of a vehicle body are correspondingly arranged on the embedded beams. According to the design, the birdcage type vehicle body skeleton structure is firmer in connection and strong in impact resistance, and can disperse the impact force, reduces the deformation degree of the vehicle body and provides more survival space for passengers when being collided.

The invention provides an intelligent junction box with an anti-drop terminal, and relates to the technical field of junction boxes. The intelligent junction box comprises a box body and a terminal; the terminal is arranged in the box body, one side of the terminal is provided with a stretching rotating shaft, one end of the stretching rotating shaft is provided with a rotating disc, one side of the rotating disc is provided with at least one straight rod in a surrounding manner, one end of the straight rod is rotatably provided with a first telescopic rod, one end of the first telescopic rod is provided with a shielding plate and a sliding folding rod in a staggered mode, the terminal is provided with at least one sliding groove and a shell, and the sliding folding rod is connected with the sliding groove; the terminal is provided with an empty groove and a threading port, a rotating rod is arranged in the empty groove, first ropes are arranged on the two sides of the rotating rod, a first moving rod is arranged at one end of each first rope, an arc-shaped disc is arranged on one side of each first moving rod, a mounting block is arranged at the bottom of each first moving rod, and a second rope is arranged on one side of each mounting block; and an elastic rope winding device is arranged on one side of the second rope. The device is reasonable in structure and good in using effect.

The invention belongs to the technical field of household greenhouse application and particularly discloses a landscape glass greenhouse. The landscape glass greenhouse is composed of an east gable, a west gable, a rear wall, a front wall, a ceiling and a sill wall. The east gable, the west gable, the rear wall, the front wall and the ceiling are each composed of a middle vertical column, a quadrangular vertical column, an end face upper cross beam, a wet curtain cross beam, a fan cross beam, a truss, a greenhouse girth, a roof tie bar and a cross-shaped diagonal bracing. The landscape glass greenhouse has the advantages that the design structure is reasonable, a PC hollow plate 8 mm thick is adopted for the top of a covering material of the glass greenhouse, 5mm tempered glass is adopted for the periphery, the performance is stable, light transmittance attenuation is slow, the light transmittance is high, cleaning is easy, and the service life is long; the glass greenhouse is attractive, elegant, transparent and bright, a temperature control system is arranged inside the greenhouse to achieve the purposes of temperature regulation and control, and the application range is wide.

The invention relates to the field of stirring kettles and in particular relates to an adsorption stirring kettle. The adsorption stirring kettle comprises a tank body, a drive motor, a transmission shaft, a resin feeding pipe, an adsorption liquid feeding pipe and stirring blades, wherein the drive motor is mounted at the upper end of the tank body; the transmission shaft is connected to the lower end of the drive motor; a stirring shaft is connected to the lower end of the transmission shaft; the stirring shaft runs through the tank body and extends into the tank body; the stirring blades are mounted in the middle and at the lower end of the stirring shaft in the tank body respectively; the resin feeding pipe and the adsorption liquid feeding pipe are mounted on one side of the upper end of the tank body; a manhole is formed in the other side of the upper end of the tank body; the manhole is covered with a manhole cover; an outlet valve is mounted at the lower end of the tank body; a spiral guide vane is mounted on the inner wall of the tank body. The adsorption stirring kettle has the advantages that the design is simple and skillful, the production cost is low, and the working efficiency is high; due to the design of the spiral guide vane on the inner wall of the tank body, a solution can float up and down within a large range during stirring, well mixed reaction is realized, the effect is remarkably improved, and the mixing time is shortened; the stirring blades are firm in design structure and convenient to mount and maintain; due to the design of reinforcement ribs, the service life of the kettle is prolonged.

The invention discloses a mechanical feeding device. The mechanical feeding device comprises a balance plate; a transmission mechanism is arranged on the outer wall of one side of the balance plate, atransmission disc is connected to the outer wall of the transmission mechanism, a plurality of limiting columns are fixed to the outer wall of the transmission disc, a connecting disc is clamped to the outer wall of the transmission disc, a plurality of limiting holes are formed in the outer wall of the connecting disc, and the plurality of limiting holes are matched with the plurality of limiting columns; a fixing frame and a transmission roller shaft are fixed to the outer wall of one side of the connecting disc, conveying roller shafts are fixed to the outer wall of the fixing frame, and the conveying roller shafts are arranged to be tubular. According to the mechanical feeding device, the defect that small packages are prone to being clamped at the joint of a traditional conveyor is overcome, the device operates through transmission of the conveyor, electric energy consumption is not needed, energy conservation and environmental protection are achieved, in addition, one transmission roller shaft is arranged to drive the two conveying roller shafts, the conveying roller shafts operate in the conveying direction of the conveyor all the time, adjustment is not needed, and use isconvenient; the gravity center of a regular triangular balancing weight is stable, and the transmission effect of the transmission roller shaft can be improved.

The invention discloses a dustproof VCM structure, which comprises an outer shell, a base body and a carrier, and is characterized in that four claws are symmetrically arranged at the top end of the outer shell, the outer side wall of the carrier is provided with inward claw grooves at positions corresponding to the claws, and the claws are inserted into the claw grooves from the top of the carrier; the middle part of the carrier is provided with outwardly protruding coil grooves between the claw grooves, and the coil grooves are internally provided with a coil; the top of the carrier is provided with a first elastic piece; the bottom end of the carrier is provided with an upwardly protruding dustproof ring at the opening, two symmetric L-shaped grooves are arranged between the top and the inner wall of the dustproof ring, the top end of the opening of the base body is provided with insertion blocks at positions corresponding to the L-shaped grooves, and the insertion blocks are used for clamping connection between the dustproof ring and the opening of the base body; the bottom of the outer wall of the dustproof ring is provided with fixing columns, and each fixing column is provided with a second elastic piece; and the outer wall of the outer shell is clamped on the base body. The dustproof VCM structure provided by the invention is stable in structure, easy to assemble and good in dustproof effect.

The invention discloses a novel height mother and child bassinet capable of wholly moving load to wheels and aims at providing a safe and comfortable novel height mother and child bassinet which has a reliable stable performance, can replace import and improves the soft and hard technical safety, so that noses of infants are more than 90cm far away from the ground when the infants lie flatly and the infants can breathe healthy air; the novel starting point fixing height is improved and the height of a seat can be adjusted; a seat growing supporting leg can be independently used and the safe and comfortable novel height mother and child bassinet is composed of three braking systems. The novel height mother and child bassinet is characterized in that the loaded seat is anchored or fastened to a novel starting point fixing height position device; a seat height adjusting safety device is additionally arranged on a seat supporting body in the vertical direction; a seat direction adjusting button, an internally-arranged pedal direction adjusting button or a seat length adjusting button is arranged and is suitable for any double-axle and single-axle vehicle types, so that the utilization is wide; the novel height mother and child bassinet can be automatically parked at a static state; a horizontal handle and large wheels are arranged, so that the novel height mother and child bassinet is convenient to push to move, and is suitable for 0-6-year-old or preschool infants in front of dining tables, in dining rooms, on passenger foot-bridges and in supermarkets and can be converted into a shopping cart when the infants are school-aged, and furthermore, the energy conservation, environmental friendliness and resource recycling are realized.

The invention discloses a general aero-engine external pipeline space size detection and setting device, which comprises a magnetic platform, a positioning bottom plate, a sliding frame, a pipe body positioning assembly, a joint positioning assembly A, a joint positioning assembly B, an angle adjusting assembly and a workpiece; the positioning bottom plate is adsorbed on the magnetic platform through magnetic force, and the lower part of the sliding frame is connected with the positioning bottom plate; a sliding groove is formed in the sliding frame, the connector positioning assembly A and the connector positioning assembly B are connected with the two ends of a workpiece respectively, and the angle adjusting assembly is arranged on the outer side of the middle of the workpiece in a sleeving mode. The general aero-engine external pipeline space size detection and setting device has the design advantages that the device is high in bending compatibility for workpieces with different diameter specifications and different bending angles, simple in device mechanism, convenient and accurate in measurement method, high in universality, simple in design structure, stable, safe, reliable, low in manufacturing cost, easy to manufacture and reusable; and in the using process, convenience and rapidness are achieved, and operability is high. The device can be popularized and applied to various machining fields.

The invention discloses a full-automatic feeding, oiling and assembling integrated assembling machine. Comprising a cylindrical part feeding vibration disc, a cylindrical part feeding unit, an automatic silicone oil dipping unit, a silica gel feeding vibration disc, a silica gel feeding assembly unit, a cap feeding vibration disc, a cap feeding unit, a cap riveting unit, a product discharging unit, a qualified product discharging belt line, a divider, a rotating disc, a set of cylindrical part positioning tools, a jacking assembly, a machine table and a machine box. The jacking assembly can make contact with the cylindrical part positioning tool, and a cylindrical part is clamped on the cylindrical part positioning tool. According to the full-automatic feeding, oiling and assembling integrated assembling machine, in the process of completing assembling and oiling of parts in the process that the rotating disc rotates by one circle, automatic oiling and assembling can be achieved among the parts only by placing workpieces on the conveying mechanism, so that the labor intensity of workers is reduced, the production efficiency is improved, and the production cost is reduced. And the oiling consistency is ensured, and the product quality is improved.

The invention provides a street lamp achieving rotation through wind energy. The street lamp achieving rotation through wind energy comprises a lamp cap, a lamp pole and a rotating device. The rotating device comprises a wind wheel, a transmission structure and a positioned lampshade. The wind wheel can provide rotation power for the lamp cap under natural wind of certain intensity. The positioned lampshade can limit the position of an internal structure and prevent the internal structure from being exposed to the sun and rain. The transmission structure comprises a crank, a connecting rod, a rocker, a turbine and a worm. The lamp cap is fixed to one end of the rocker so that the lamp cap can swing along with the rocker. A rotary shaft is arranged in the middle of the rocker in the horizontal direction so that the rocker can rotate relative to the positioned lampshade. The other end of the rocker is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the crank. The crank and the turbine are fixed together and rotate around the same axis, and through cooperation of the worm and the turbine, gearing-down can be achieved. The wind wheel is connected with the worm so as to drive the worm to rotate.

The invention relates to the technical field of heat radiation, and particularly to a multilevel air-cooled heat radiation device. The multilevel air-cooled heat radiation device comprises fins arranged on cooling fins; the fins are in multilayer annular arrangement; annular cooling plates different in size are arranged above the fins; and the cooling plates are embedded sequentially from big to small and from outside to inside. The heat radiation device is compact in structure, can save space occupied by a heat radiation system, not only can prolong the service life of a heating body, but also further can make the life be safe and at ease.

The invention relates to a transmission for a motor vehicle with a switchable gear set, which is assigned to a first sub-transmission and a second sub-transmission, wherein the sub-transmissions each have an input shaft and a common output shaft, And the input shafts can be activated alternately via the powershift clutches, respectively. The transmission, which is advantageous in terms of construction and function, is realized in that one of the subtransmissions (B) is equipped with an auxiliary unit (VG) which causes a change in the gear ratio, which can be alternately driven by the third powershift clutch (K3 ). ) on.

The invention discloses a car audio display screen and relates to the technical field of car audio. The car audio display screen comprise a mounting box and a semicircular arched frame and is characterized in that a first rectangular groove is formed in one surface of the mounting box; a first circular groove is formed in one surface of the mounting box; four first connecting blocks are fixed to the peripheral side of the mounting box; first short shafts are fixed to the opposite inner walls of the first rectangular groove; a display base is arranged on the first rotary shaft in a running fitmanner; a display screen body is fixed on one surface of the display base; second circular grooves are formed in the opposite sides of the display base; the second circular grooves are coordinated with the first short shafts; a first circular plate is connected to the inner wall of the first circular groove in a threaded manner; first guide grooves are formed in the opposite inner walls of the semicircular arched frame. The car audio display screen has the advantages that by the mounting box, the semicircular arched frame, the display base and a covering plate, rear-seat audio regulation is achieved while the safety of the display screen when the display screen is not used is guaranteed, and the problem that an existing rear seat does not have the car audio display screen is solved.

The invention provides a high-strength bridge frame and an assembling method thereof, and relates to the technical field of bridge frames. The high-strength bridge frame comprises a bridge frame body and a side frame body; a motor is arranged in the side frame body; a first threaded shaft rod is rotatably arranged on one side of the motor; a second threaded shaft rod is rotatably arranged on one side of the first threaded shaft rod; a mounting rod is arranged on one side of the side frame body; a threaded rod is arranged on the side, penetrating through the side frame body and the mounting rod, of the second threaded shaft rod; the threaded rod is sleeved with a side moving frame; first rotating rods are rotationally arranged on the two sides of the mounting rod and the side moving frame; side push rods are arranged at the connecting positions of the first rotating rods; sliding grooves are formed in the two sides of the side frame body; moving blocks are arranged on the sliding grooves in a sliding mode; thin grooves are formed in the two sides of the interior of each moving block; second springs are arranged in the thin grooves; an inclined block is arranged on one side of each second spring; the side push rods penetrate through the sliding blocks to be connected with the inclined blocks. The high-strength bridge frame is reasonable in structure and good in using effect.

The present invention provides an intelligent busway conversion mechanism, which relates to the technical field of bridges, and includes a pouring busbar, a side block and a housing. The pouring busbar is covered with a constraining frame, and at least one side plate is provided on both sides of the constraining frame. , a first spring is provided on one side of the side plate, the pouring bus bar is provided between the first springs, a pull rod is installed slidingly inside the top of the side plate, and a mounting rod is provided on the top of the pull rod, and the installation A telescopic rod is provided on one side of the rod, and a second spring is wound around the telescopic rod, and a top block is provided on one side of the telescopic rod, and the top block is connected with the side plate, and an adapter is provided at one end of the pull rod piece. The invention has reasonable structure and good application effect.

The invention discloses a rain-tight veranda. The characteristics of water flow are adopted for design of the shape of the veranda. The veranda is used on rainy days to avoid rainwater and can reduce unnecessary conflicts between upper floors and lower floors of a high-rise, and a comfortable rain-free natural environment is built, and people are not afraid of rainy days especially when clothes are aired on the veranda. The design structure is more reasonable and more stable, and influences and potential hazards are eliminated in building design.

The invention relates to a quadrangular-pyramid-shaped material layer loosening filler. The quadrangular-pyramid-shaped material layer loosening filler comprises supporting columns and stiffening plates, wherein the four supporting columns are fixed at the same end point; the included angle between every two adjacent supporting columns is 109.47 DEG; any two of the supporting columns are connectedand fixed by the stiffening plates; and in use, the filler is evenly distributed in high-temperature material solid particles recovered from gas-solid contact waste heat. According to the quadrangular-pyramid-shaped material layer loosening filler, the material layer can be effectively loosened, so that the voidage of the layer is increased, and the filling structure of gas flow resistance in a solid particle material layer is improved; and a waste heat recovery shaft furnace process is adopted for heat recovery, so that the energy consumption of an air feeding draught fan is significantly reduced, and the cooling process is more balanced and more efficient. The quadrangular-pyramid-shaped material layer loosening filler has the advantages that the thermal conductivity is great, the thermal stability is great and specific surface area is large, so that the heat exchange efficiency between gas and solid is improved, and the cooling height of the material layer is effectively reduced. Due to the structural features of the quadrangular-pyramid-shaped material layer loosening filler, the particulate material and the material layer loosening filler are easy to separate by mechanical sieving in a subsequent section.

The invention discloses a cross beam type power assembly suspension device. The cross beam type power assembly suspension device comprises a front suspender and a rear suspender, wherein one end of the front suspender is fixedly connected with an engine shell, the other end of the front suspender is fixedly connected with frame longitudinal beams, two ends of the rear suspender are fixedly connected with the frame longitudinal beams, the middle part of the rear suspender is fixedly connected with the middle part of a gearbox shell side plate, the rear suspender comprises mushroom-shaped cushion assemblies, rear suspender brackets and an arc-shaped cross beam, two ends of the arc-shaped cross beam are respectively and fixedly connected with the top ends of two mushroom-shaped cushion assemblies, the middle parts of the mushroom-shaped cushion assemblies are fixedly connected with the frame longitudinal beams at the same side through the rear suspender brackets, transition connecting supports are arranged between the mushroom-shaped cushion assemblies and the arc-shaped cross beam, and the top parts of the mushroom-shaped cushion assemblies are fixedly connected with the middle part of the gearbox shell side plate through the transition connecting supports. Due to the design, the longitudinal span of a whole vehicle between the front suspender and the rear suspender is increased, the vibration isolation performance is good, and the assembling space is not occupied.

The invention discloses a sliding track type diamond section insulator. The sliding track type diamond section insulator structurally comprises connector wire clamps, a bridge insulator, two metal sliding tracks and two insulating sliding tracks. The two metal sliding tracks and the two insulating sliding tracks are mutually spaced to form a diamond structure, the two longitudinal ends of the diamond structure are connected with the connector wire clamps respectively, the sliding track type diamond section insulator is connected with a contact wire on a running line through the connector wire clamps, and the two transverse ends of the diamond structure are connected with the bridge insulator. Overhead contact line sectionalizer insulating rods are adopted for the insulating sliding rails and structurally comprise inside composite insulating rods and outside ceramic composite material pieces, and the composite insulating rods are sleeved with the ceramic composite material pieces. The composite insulating rods are good in tension bearing capacity and are sleeved with the multiple stages of composite material pieces in series connection, so that arc resistance is achieved, damage is not likely to occur, the service cycle is long, and the problems that in the prior art, insulating sliding tracks are not resistant to wear, likely to be carbonized, not resistant to arcs and short in service life and need to be regularly replaced are solved.

The invention discloses a tobacco leaf intelligent grading system and method based on machine vision and hyperspectral technology, including a light box main body, an industrial CCD, a filter assembly, a warm light source group, a polyvinyl fluoride reference whiteboard and a computer, and the warm light source group is installed in the light box main body , the polyvinyl fluoride reference whiteboard is set at the bottom of the main body of the light box, the industrial CCD and the filter assembly are set at the top of the main body of the light box, and the tobacco leaves to be tested are located at the bottom of the main body of the light box. The invention uses high-speed image processing technology to process the collected tobacco leaf images, and obtains the geometric shape features, color features, texture features and internal quality features of the tobacco leaves at one time. The design structure is simple and stable, and the intelligent grading of tobacco leaves is realized, and the grading speed is very fast Fast, greatly improving the efficiency and objectivity of tobacco leaf grading, unifying the grade indicators in the tobacco leaf procurement process, improving the grade purity, providing guarantee for the better use of tobacco leaves in the cigarette industry, and at the same time improving the grading efficiency and reducing production costs.

The embodiment of the invention relates to the field of wireless communication technology, and discloses an antenna switch device and a terminal thereof. The antenna switch device comprises at least one switch circuit, the switch circuit comprises: a first matching circuit, a second matching circuit, a first capacitor element, a second capacitor element, a first gating element, a second gating element, a first control transmission circuit and a second control transmission circuit, wherein when a first end of the first control transmission circuit receives a first control signal, the first gating element is in a turn-on state under the control of the first control signal, and when the first end of the second control transmission circuit receives a second control signal, the second gating element is in a disconnected state according to the second control signal. In the antenna switch device disclosed by the invention, the flexibility of the antenna switch circuit of the terminal is improved, and meanwhile better performance of the antenna switch is guaranteed.

The invention discloses an elevating bed frame, which comprises an upper frame and a lower frame, the upper frame is movably connected with the lower frame, the upper frame includes a first long horizontal tube and a first short vertical tube; the lower frame includes a second long horizontal tube, a second long tube Two longitudinal short tubes; the inner sides of the front ends of the two first horizontal long tubes of the upper frame are connected with the inner pin shafts of the front ends of the two second horizontal long tubes of the lower frame through the first support rod and the second support rod. The middle parts of the two support rods are welded through the first connecting rod; the inner sides of the front ends of the two first horizontal long tubes of the upper frame are connected with the inner pins of the front ends of the two second horizontal long tubes of the lower frame through the first support rod and the second support rod, The middle part of the third support rod and the fourth support rod is welded by the second connecting rod; the middle part of the two second transverse long tubes of the lower frame is welded with the third connecting rod, and the pin shaft between the first connecting rod and the third connecting rod is connected to the turbine. The screw rod lifting assembly; the lower end surface of the upper frame is connected with a lifting column.

A system and method for compression test of filling flyash slurry in overburden rock isolated injection is suitable for use in the field of green mining projects. The system comprises a slurry compression device, a bleeding base, a bleeding collecting device and an ash taking base; the slurry compression device comprises a cylindrical grout bucket, a pressure piston is disposed in the grout bucket and comprises a pressure rod and a piston head, and the piston head is provided with a vent bolt; the bleeding base comprises a bottom seat, the top of the bottom seat recesses down, a screen plate with holes is arranged between a recess of the bottom seat and the grout bucket, a water guide channel is arranged below the recess of the bottom seat, the bottom of the water guide channel is connected with the bleeding collecting device, the bleeding collecting device comprises a drain valve, the drain valve is connected with a measuring tube through a water guide pipe, and an electronic scale is disposed below the measuring tube. The system is stable in design structure, reliable in strength, simple in structure and convenient for staff to operate and acquires test results at the premise of safety ensured.