56results about How to "Quick and easy assembly" patented technology

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 an orthotropic steel plate-composite material hollow slab combined bridge floor structure. The bridge floor structure comprises an orthotropic steel plate, a composite material hollow slab and a wearing layer, wherein the upper side of the orthotropic steel plate is sequentially provided with the composite material hollow slab and the wearing layer; the composite material hollow slab is connected with the orthotropic steel plate on the lower side through a structural adhesive; the top of the composite material hollow slab is provided with a rough surface layer; the wearing layer is poured on the upper side of the rough surface layer; the composite material hollow slab comprises two parts, namely a top plate and a bottom plate; and the top plate and the bottom plate are connected through cement and bolts to form the composite material hollow slab. The orthotropic steel plate-composite material hollow slab combined bridge floor structure has the advantages of light weight, high strength, high rigidity, high peel strength, moisture protection, corrosion resistance, stable high-temperature stability and low-temperature crack resistance; and meanwhile, the orthotropic steel plate-composite material hollow slab combined bridge floor structure has the obvious characteristics of simple, convenient and rapid construction assembly, water resistance, pavement layer cracking resistance, orthotropic steel bridge floor surface corrosion and the like and is suitable for construction and repair of various steel bridge floor structures.

A rotary tank cleaning spray nozzle assembly which includes a stationary housing, a rotary housing for rotation about a central axis of the stationary housing, and a nozzle carrying hub supported by the rotary housing for rotation about an axis transverse to the axis of the stationary housing. A support rod extends through the rotary housing and into the stationary housing with a lower end supporting the underside of the rotary housing and the upper end being secured by a retainer. The retainer is releasable to permit removal of the rotary housing and nozzle hub from an underside of the stationary housing. A fluid driven drive for the rotary housing and nozzle hub includes a pair of removably mounted bevel gear rings. In one embodiment, liquid lubricating, frustoconical, high load carrying bearings support rotatably.

The invention discloses a factory-made orthotropic steel plate and composite combined deck structure. The deck structure comprises an orthotropic steel plate (1), a composite layer (2) and a wearing layer (3), wherein the upper side of the orthotropic steel plate (1) is provided with the composite layer (2) and the wearing layer (3) in sequence; the composite layer (2) is mutually connected with the orthotropic steel plate (1) below the lower side of the composite layer (2) through resin; the top face of the composite layer (2) is provided with a rough surface layer (4); and the wearing layer (3) is cast at the upper side of the rough surface layer (4). Through additionally installing the composite layer between the orthotropic steel plate and the wearing layer, the deck structure disclosed by the invention is light in weight, high in strength, high in rigidity, good in peeling resistance, moisture resistance and corrosion resistance and high in high-temperature stability and low-temperature anti-cracking performance and has the outstanding features that assembly construction is simple and rapid; water is resisted; a pavement layer is prevented from being cracked; and the orthotropic steel deck structure is prevented from being corroded. The factory-made orthotropic steel plate and composite combined deck structure is suitable for building and repairing various steel deck structures.

The invention provides a mattress, an assembly method of a mattress, a mattress storage and transportation box and a packaging method of the mattress. The mattress comprises a surface layer (10), a bottom layer (20) and a supporting body (30) which is arranged between the surface layer (10) and the bottom layer (20); the mattress also comprises a dismountable and foldable frame (60) which is arranged between the surface layer (10) and the bottom layer (20) and used for covering the supporting body (30), and side cloth (50) of which the upper and lower sides are respectively detachably connected with the surface layer (10) and the bottom layer (20); the side cloth (50) covers the frame (60) and the supporting body (30). According to the mattress disclosed by the invention, each member can be conveniently mounted and dismounted; space occupied by the dismounted mattress is greatly reduced; transportation and storage of the mattress are facilitated; lots of cost can be saved.

The invention provides an electric leakage protection socket with a function of reverse wiring protection, and the socket comprises a main loop switch and an electromagnetic release mechanism, and also comprises a lifting part. Two sides of the lifting part are respectively provided with a metal rod in a sleeving manner. The lower end of the metal rod is sleeved by a reset spring, and the upper end of the metal rod is in contact connection with a movable metal piece. The reset spring of a zero line metal rod and a static metal piece form a reverse wiring loop switch. The lifting part is cooperatively provided with a locking part, and the head of the locking part abuts against a side wall of the lifting part. The electromagnetic release mechanism comprises an iron core, and the iron core is provided with a driving disc. During reverse wiring, the iron core pulls the lifting part downwards, and the head of the locking part covers the top of the lifting part under the action of an elastic resetting mechanism. The beneficial effects of the invention are that a main loop switching mechanism is reasonable and ingenious in structure, and is quick in response; during reverse wiring, the lifting part is driven by the iron core to sinks for automatic releasing; moreover, the locking part automatically locks the lifting part; the reset button cannot achieve the resetting; the socket is safe for use.

The invention relates to an anticorrosion plug screw screw alarm device for ships, mainly comprising an anticorrosion plug screw and an alarm controller. The anticorrosion plug screw is mounted on a close over of a ship condenser and comprises a joint nut, a joint, a plug screw and an anticorrosion block, one end of the anticorrosion block is tightly screwed in an internal threaded hole at one end of the plug screw trough the thread, one end of the plug screw is tightly screwed on the close over of the ship condenser, an external threaded hole at the other end of the plug screw is in threaded connection with one end of the joint, the other end of the joint is in threaded connection with the joint nut, the anticorrosion block, the plug screw, the joint and the joint nut are internally provided with four leakage holes which are mutually communicated, the first leakage hole is arranged at one end of the anticorrosion block and is not communicated with the other end of the anticorrosion block, and the fourth leakage hole is connected with a hydraulic controller and an alarm controller through a conveying pipeline. The invention has simple and compact structure, is convenient to assemble and maintain, can alarm a worker to replace the anticorrosion plug screw in time, lessen the seawater corrosion to the condenser pipeline and prolong the service life of the condenser.

The invention provides a prefabricated assembled caisson. The prefabricated assembled caisson comprises a ring well body and a plurality of tubing bolts, the ring well body comprises at least two arc-shaped well pieces, first arc round holes are formed in the two opposite sides of the well pieces, the first arc round holes in the two adjacent well pieces in the circumference direction communicatewith each other, and the tubing bolts penetrate through the first arc round holes to fix and connect the two adjacent well pieces. When the prefabricated assembled caisson is transported, the tubing bolts can be loosened in a screwed mode to remove the two adjacent well pieces, the transporting space occupied by the prefabricated assembled caisson is reduced so as to transport more prefabricated assembled caissons to reduce the transporting cost; when the transported well pieces reach to a designated location, the two adjacent well pieces can be quickly assembled and connected through the tubing bolts, and then the ring well body is installed in the caisson construction place and sunken; and compared with the site pouring concrete, the construction is simple and convenient, the construction efficiency is improved, in addition, the invention further provides a caisson construction method.

The invention discloses an IFD purification device of an air conditioner. The device comprises an IFD support, an electric charge integration structure and filter screen assemblies, wherein the electric charge integration structure and the filter screen assemblies are arranged on the IFD support; the IFD support is a hollow rectangular support; a middle groove for installing the electric charge integration structure is formed in the middle of the IFD support in the length direction; mounting grooves allowing the filter screen assemblies to be placed therein are formed in the left side and the right side of the bottom of the IFD support; and the electric charge integration structure and the filter screen assemblies are integrated on the IFD support to form an integral module. According to the IFD purification device of the air conditioner, the electric charge integration structure and the filter screen assemblies are installed on the IFD support and are fixed into a whole through a box seat and a box cover, so that a negative ion generator device and a filter device are integrated, the electric charge integration structure is optimized, wiring is standardized, and the production risk is reduced, and thus the structure is simpler and more compact, the thickness is small, the occupied space is small, and the purification efficiency is high; meanwhile, the device is convenient to assemble and disassemble, easy to clean and maintain; and the device can effectively remove indoor toxic and harmful smoke dust, dust particles, peculiar smell and pollen in air, can kill bacteria and germs and solve other problems.

The invention discloses a mowing device for a lawn mower and a mounting method for the mowing device. The mowing device comprises a rotary disc, a plurality of mowing blades which are arranged along the circumference of the rotary disc and disposed at different phases and fastening units for connecting the plurality of mowing blades with the rotary disc. A plurality of accommodation grooves extending from the outer edge of the rotary disc to the center of the rotary disc radially are formed in the rotary disc and are distributed in at least two different mowing planes along the axial direction of the rotary disc, and the accommodation grooves are provided with openings in the periphery of the rotary disc to enable the mowing blades to be inserted in the accommodation grooves. The mowing device is low in cost, high in mowing effect, capable of reducing energy consumption of the lawn mower and rapid and convenient to mount.

The invention relates to a knitting machine with at least one bed with ribs between which knitting means are situated free to move and coupled with needle cams serving to control them, each of them consisting of at least one needle cam section (4), with needle cams arranged on at least one needle cam carrier arranged at a fixed distance from the bed on at least one carrier (1) of needle cam blocks and fitted with attachment and positioning means for fixing the needle cam sections (4) and for keeping the position of the needle cam sections in relation to the stationary and / or movable part (2, 3) of the needle cam carrier, said attachment and positioning means permitting in the dismantled state of the needle cam carrier to mount and / or to remove the needle cam sections (4) from the front side of the needle cam carrier. The attachment means consists of at least one shifting attachment means (5) arranged substantially parallel to the front side (21) of the needle cam carrier by means of which at least one needle cam section (4) is held on the needle cam carrier and of at least one positioning means arranged substantially normal to the front side (21) of the needle cam carrier by means of which the needle cam sections (4) are held in required position in relation to the needle cam carrier.

A rotary tank cleaning spray nozzle assembly which includes a stationary housing, a rotary housing for rotation about a central axis of the stationary housing, and a nozzle carrying hub supported by the rotary housing for rotation about an axis transverse to the axis of the stationary housing. A support rod extends through the rotary housing and into the stationary housing with a lower end supporting the underside of the rotary housing and the upper end being secured by a retainer. The retainer is releasable to permit removal of the rotary housing and nozzle hub from an underside of the stationary housing. A fluid driven drive for the rotary housing and nozzle hub includes a pair of removably mounted bevel gear rings. In one embodiment, liquid lubricating, frustoconical, high load carrying bearings support rotatably.

The invention discloses a coke oven top plate pipe laid assembled type fixing rack which comprises a plurality of pre-laid bar dowels, a plurality of longitudinal horizontal tubes, a plurality of transverse horizontal tubes, a plurality of lower laid ejection tubes, a plurality of laid cleaning tubes, a plurality of laid temperature testing tubes and a plurality of control elevation short tubes, wherein the pre-laid bar dowels are pre-laid on frame column heads of a coke oven foundation top plate; the control elevation short tubes are welded on the pre-laid bar dowels; the longitudinal horizontal tubes are erected along a frame column longitudinal tower and are fixedly connected with the control elevation short tubes; the transverse horizontal tubes are fixedly erected on the longitudinal horizontal tubes; the longitudinal horizontal tubes and the transverse horizontal tubes form an overall scaffold grid net; the lower laid ejection tubes and the laid temperature testing tubes are fixedly mounted on the transverse horizontal tubes; the laid cleaning tubes are fixedly mounted between two adjacent transverse horizontal tubes. The coke oven top plate pipe laid assembled type fixing rack is convenient and rapid to assemble and fix, good in transfer usability, easy in disassembling fixed laid tubes and relatively convenient to control elevation, displacement and mounting process adjustment, and moreover as a fixing rack material can be transferred and recycled, the cost can be reduced.

The invention discloses an automobile skylight abat vent mechanism and an automobile skylight system. The automobile skylight system includes a skylight frame and a abat vent system which includes anautomobile skylight abat vent mechanism; the automobile skylight abat vent mechanism includes an abat vent core shaft, a core shaft installation seat, a coil spring, a coil spring center shaft, and acurtain cloth; one end of the core shaft installation seat is an containing chamber, and the other end is a shaft seat; the end of the containing chamber is provided with a shaft mounting through hole; the coil spring is arranged in the containing chamber; the coil spring center shaft and the abat vent core shaft are mutually connected in a butt joint mode, and the two can drive each other to rotate around a central axis; and the outer side of the shaft seat is provided with a side end cover, the other end of the abat vent core shaft can slide into the shaft seat from an opening groove, and can be rotationally connected with the side end cover in an embedded mode. According to the automobile skylight abat vent mechanism, the number of parts is fewer, the structure of the mechanism is simplified, and the coil spring does not need to be pre-tightened to generate a torque, so that the mechanism is more convenient to assemble, and has the advantages that the parts are few, assembling is convenient, and the cost is low.

The invention relates to a spacing ring (1), an optical lens and a camera module. The spacing ring (1) is arranged in a lens cone of the camera module, and is used for spacing two adjacent lenses in the optical lens; the spacing ring (1) comprises a first surface (101) abutting against one of the lenses, a second surface (102) abutting against the other lens, as well as a third surface (103) connected with the inner wall of the lens cone; and the spacing ring (1) also comprises a fourth surface (104) which is far away from the third surface (103) and is used for avoiding the lenses in the optical lens. When the optical lens is assembled according to the spacing ring, the lenses can be avoided, each lens in the optical lens is provided with a boss, can provide a mounting space for the spacing ring and can avoid the spacing ring. Therefore, after the optical lens or the camera module is assembled, the stability is higher, the imaging quality is guaranteed, and the problem that the lens stress is concentrated is solved.

The invention discloses a drum tile which comprises a main body part, a magnetic element, a first sealing part and a second sealing part, wherein the magnetic element is assembled on the main body part; the first sealing part and the second sealing part are used for sealing and fixing the magnetic element; the main body part comprises an upper wall surface and two side wall surfaces; the side wallsurfaces are perpendicularly connected with the upper wall surface; an accommodating groove which extends along the length direction of the main body part is formed in the main body part, extends tothe upper wall surface and at least one side wall surface, and is accommodated in the accommodating groove along the length direction; the first sealing part is assembled to the main body part along the length direction; through the first sealing part, the accommodating groove is sealed and the magnetic element is limited along the vertical direction; and through the second sealing part, the accommodating groove is sealed and the magnetic element is limited along the length direction. The invention further discloses a tread drum comprising the above drum tile. Through the matching among the first sealing part, the second sealing part and the accommodating groove, the magnetic element is limited in the drum tile, thereby avoiding the circumstance that the magnetic element is fixed through asizing material, shortening the assembling cycle, as well as dismounting and replacing the magnetic element very conveniently and rapidly.

The invention belongs to the technical field of building decoration, and particularly relates to a wall surface hanging system and a mounting method. The wall surface hanging system comprises an external corner assembly, wherein the external corner assembly comprises a first wall plate, a second wall plate and a vertical keel, the vertical keel is fixed on an external corner wall surface, and thefirst wall plate and the second wall plate are vertically butted through an external corner piece and are hung and buckled on the vertical keel; an internal corner assembly, wherein the internal corner assembly comprises a third wall plate and a transverse keel, the third wall plate is hung and buckled on the transverse keel through a clamping piece, the transverse keel is fixed on an internal corner wall surface, and the third wall plate is separately in vertical butt joint with the first wall plate and the second wall plate. The external corner assembly and the internal corner assembly are fixedly connected through an F-shaped piece so as to limit the first wall plate, the second wall plate and the third wall plate. Overall hanging of the external corner and the internal corner is achieved through the external corner piece and the F-shaped piece, the positioning and installing precision is improved, rapid positioning and adjusting are achieved through the transverse keel and the vertical keel, and the construction precision is guaranteed.

The invention discloses a wall hanging furnace three-way valve control device and an assembling and connecting method thereof. The wall hanging furnace three-way valve control device comprises an upper cover and a lower cover, a mounting space defined by the upper cover and the lower cover is internally provided with a mounting plate arranged on the lower cover , a bathroom microswitch, a heatingmicroswitch, a PCB, a motor arranged between the lower cover and the mounting plate, an ejection piece movably arranged on the side, close to the upper cover, of the mounting plate and a driving cam,wherein the bathroom microswitch, the heating microswitch and the PCB are arranged on the mounting plate; the bathroom microswitch and the heating microswitch are located between the mounting plate and the upper cover and located on one side of the PCB; the PCB is connected with the bathroom microswitch and the heating microswitch through an electric wire, and a lead of the motor is connected withthe PCB; and the ejection piece penetrates through the upper cover, the driving cam is located on one side of the bathroom microswitch and the heating microswitch, and the driving cam is connected with an output shaft, which penetrates through the mounting plate, of the motor and is abutted against the ejection piece. According to the device and the method, three 250 terminals are replaced by thePCB, so that the installation difficulty is reduced, and the assembly efficiency is improved.

The invention relates to a laser welding method for an aircraft engine exhaust pipe end flange. The laser welding method comprises the following steps that 1, welding edges of a flange and a cylinder are machined into annular welding edges; 2, according to the design parameters of the annular welding edges, a laser welding path is planned, and pre-welding cleaning is conducted; 3, laser welding parameters are determined; and 4, the flange and the cylinder are welded according to the laser welding parameters. The laser welding method for the aircraft engine exhaust pipe end flange aims at solving the problems of low precision and poor service reliability during argon arc welding of an exhaust pipe.

The invention provides a wiring mechanism and a refrigerator. The wiring mechanism is used for realizing the electrical connection between a drawer type door body and a refrigerator body, the refrigerator body is provided with a chamber which is opened forwards, the drawer type door body is capable of moving in the front and back direction to open or close the chamber, and the drawer type door body is provided with an electrical component; the wiring mechanism comprises a cable for supplying power to the electrical component and a drag chain for accommodating part of the cable, and one end ofthe drag chain is used for being fixed inside the chamber; and the wiring mechanism further comprises a support frame fixed on the rear side of the drawer type door body and a fixing box fixedly clamped with the support frame, and the other end of the drag chain is connected to the fixing box. The wiring mechanism effectively avoids the cable from deformation and damage through the drag chain, andthe drag chain is fixedly mounted through the fixing box fixedly clamped on the support frame, the assembly is more convenient, the structure is pleasing to the eye, and the work is safer and more reliable.

The invention belongs to the technical field of steel structure buildings, and in particular relates to a semi-automatic construction method and device for upside-down lifting of steel structure buildings. The flip-chip lifting construction method of a steel structure building comprises the following steps: pre-construction preparatory work - assembling flip-chip lifting frame touches - building body assembly - building body lifting - dismantling on-site equipment and tooling. The beneficial effects are: the structure is simple, the assembly is convenient, the stability of the building structure is ensured, the construction period is shortened, the use of large hoisting machines and feeding machines is eliminated, labor costs and material consumption are greatly reduced, and the project The cost has been greatly reduced.

The invention discloses a rectifying and noise lowering exhaust hood. The rectifying and noise lowering exhaust hood mainly comprises a non-return valve, an air duct, a shell assembly, an oil net anda smoke collecting hood; the oil net is located on the center portion of the smoke collecting hood; the shell assembly is connected above the smoke collecting hood and the oil net; the air duct is located in the shell assembly; the non-return valve is arranged above the air duct; an impeller and a motor are arranged in the air duct; air inflow rings are arranged on the two sides of the impeller; and the positions of air inlets in the air duct are provided with a rectifying cover. According to the rectifying and noise lowering exhaust hood, due to the fact that the rectifying cover is arrangedat the positions of the air inlets of the air duct, local vortexes are reduced, air flow is made smooth, and the overall performance of a smoke machine is improved.

An eccentric wheel and a driving body which are in deflection transmission connection are arranged in a pump body of the electric diaphragm pump, the eccentric wheel is connected with an output shaft of a motor, the driving body is connected with a main diaphragm, and an outlet one-way valve diaphragm is arranged between a pump cover and a diaphragm cover; wherein in the pump body, the diaphragm frame, the main diaphragm diaphragm, the inlet one-way valve diaphragm, the diaphragm cover and the pump cover which are stacked in sequence, the outer edge part of one member is provided with a plurality of mounting columns which are uniformly distributed in the circumferential direction and axially extend; the outer edge parts of other components are respectively and correspondingly provided with axially-through mounting parts for inserting the mounting columns, and are configured as follows: the mounting columns and the mounting parts form a circumferential limiting pair, and the end parts, extending out of the pump cover and / or the pump body, of the outwards-extending ends of the mounting columns are provided with locking parts; and the locking part is welded and fixed with the pump cover and / or the pump body. And the bearing strength of the component is effectively improved through structural optimization.

The embodiment of the invention discloses a one-way sealing ball valve. A spherical part of a spherical valve is provided with a through hole and spherical sealing surfaces located on the two sides ofthe through hole. The end, in contact with a spherical valve, of a sealing ring is of a spherical structure. The sealing ring is a sealing ring formed by a fluoroplastic material and is used for forming a sealing pair with the spherical valve. A boss is arranged at the other end of the sealing ring. A pipe joint comprises a joint end and a support end. One end of a spring abuts against the end, with the boss, of the sealing ring. The support end of the pipe joint is attached to the boss of the sealing ring. A sleeve at the support end is embedded into the outer side of the spring and enablesthe other end of the spring to abut against the inner wall of the sleeve at the support end, and a shell is embedded into the outer sides of the spherical valve, the sealing ring and one side of the support end of the pipe joint. According to the one-way sealing ball valve, on the premise of not reducing the functional performance and reliability of the ball valve, the effect of reducing the product cost by replacing the bidirectional sealing structure with the one-way sealing structure is achieved, and meanwhile, the problem of rubber cutting of a traditional ball valve is solved.

The invention discloses a switch plug bush full-linked structure of three-position dipolar oblate plugs and three-position five-hole plugs. The full-linked structure is composed of at least three groups of dipolar oblate plug bushes and at least three groups of five-hole plug bushes. Switch insertion sheets are formed outside L-pole plugs, switches are inserted in the switch insertion sheets in a sleeving mode, earth polar plug bushes are formed between the N-pole plugs and the L-pole plugs of each group of five-hole plug bushes, there are altogether one N-pole terminal for the N-pole plugs, and the N-pole terminal and a wire are connected through a code riveting mode. The major innovation points of the switch plug bush full-linked structure of the three-position dipolar oblate plugs and the three-position five-hole plugs, disclosed by the invention, are as follows: 1, the switches and plug bushes L poles employ a plug-in type connection mode, and the assembling is convenient; 2, the unique switch plug bush full-linkage scheme of the three-position dipolar oblate plugs and the three-position five-hole plugs can realize an integrated system and provides a more stable and more efficient power supply mode; and 3, the connection mode of a terminal and a power line employs a cold reviewing structure to replace a conventional tin soldering structure, such that the conductive mode is more reasonable, and the connection mode is more stable.

The invention provides a novel assembly type self-resetting buckling restrained brace device with SMA (Shape Memory Alloy). According to the self-resetting system of the device, the SMA cable material is pulled no matter the whole structure is pressed or pulled, so that considerable self-resetting performance is provided for the structure. An energy consumption system of the device enables the whole structure to have excellent energy consumption performance. Therefore, when the whole structure is applied to engineering through an external connecting system, the anti-seismic function that a building structure is not damaged in small earthquakes and medium earthquakes and can be replaced in large earthquakes can be achieved, it is guaranteed that a building only generates small residual deformation, and meanwhile the excellent energy dissipation performance is achieved; and the requirements of rigidity, energy consumption and bearing capacity in the design of a normal use limit state and a bearing capacity limit state of a building structure can be met.

The invention discloses an antenna feed source folding mechanism, which comprises a mounting base, an antenna and a feed source support rod. Flip wing plates are connected to the two outer sides of the mounting base. A driving motor is drivingly connected to the flip wing plates. The antenna is fixedly connected with a feed source connecting piece by a connecting bolt. A feed source is installed at an end of the feed source support rod away from the feed source connecting piece. A support frame is fixed to the bottom of a slope on the mounting base. In the antenna feed source folding mechanism, the driving motor drives the antenna to move downward, the feed source and the feed source connecting piece move downward with the motor. When in contact with the support frame, the feed source support rod no longer moves downward. The antenna continues moving downward such that a torsion spring is compressed until the antenna moves to a horizontal position. When the antenna moves upward, the feed source support rod automatically restore its original angle due to the effect of the torsion spring, thereby automatically folding and unfolding the antenna feed source. The antenna feed source folding mechanism is fully automatic, simple in structure, convenient to assemble, and highly practical.

The invention discloses a novel efficient and convenient cuvette magnetic stirrer control system which comprises a magnetic stirring system and a control system, the magnetic stirring system is composed of magnetic stirring equipment, the magnetic stirring equipment comprises a cuvette and a magnetic stirring head, the cuvette is located on a stirring area of the magnetic stirring head, and the cuvette is located on a stirring area of the magnetic stirring head. A stirrer is arranged in the cuvette, and an N-pole coil and an S-pole coil are arranged in the magnetic stirring head; the control system is composed of a control device and a circuit device, the control device is a control box, an MCU and a driving chip are arranged in the control box, according to the magnetic stirrer control system, STEP pulse signals are sent to the driving chip mainly through the MCU, the driving chip is used for continuously alternating excitation phases, heteropolar attraction and homopolar repulsion are utilized, and the STEP pulse signals are transmitted to the driving chip, so that the STEP pulse signals are transmitted to the driving chip, and the STEP pulse signals are transmitted to the driving chip. Therefore, the magnetic stirrer rotates along with the continuous change of the magnetic poles, the purpose of stirring the solution in the cuvette is achieved, and the cuvette has the characteristics of no noise, long service life, small volume and high stirring efficiency.