796 results about "Right trapezoid" patented technology

The invention discloses an automatic collecting device and method for water surface floating objects. The automatic collecting device comprises an unmanned ship, a plurality of vertical conveying belts and rubbish bins. An annular electromagnet is fixedly arranged at the top of a rubbish storage bin in the unmanned ship. The longitudinal cross section of the electromagnet is a right trapezoid. Bevel edges of the right trapezoid face upwards and are tilted towards the bottom of the rubbish storage bin. The multiple vertical conveying belts are evenly arranged in the outer circumferential direction of the rubbish storage bin. One rubbish bin is hinged to each vertical conveying belt, and the hinged points of the rubbish bins and the vertical conveying belts are arranged at the positions 1 / 2-2 / 3 of the bin heights of the rubbish bins. Each rubbish bin comprises an outer barrel, a rubbish collecting mesh, a pressure sensor, a liquid level controller, a solar panel and a plurality of water suction pumps. According to the automatic collecting device and method, no manual operation is required, the occupied size is small, and the water surface floating objects can be collected automatically and continuously; and moreover, the structure is simple, operation is easy, operating cost is low and the device and method are suitable for small-sized lakes of scenic areas, cities and the like.

The invention relates to an air power collecting and discharging type precision seed sowing device, which is characterized by comprising a shell, a sealing cover plate, a seed sowing roller, a pressure relief wheel, a seed bed screen, a seed cleaning shifting finger, a seed guiding pipe, an impurity collecting plate and a seed stopping plate, wherein the shell is connected with the sealing cover plate by virtue of bolts, the seed sowing roller is arranged in the shell to form an operation air chamber, an air supply chamber and a seed chamber, the seed chamber is internally provided with an air supply pipe, the seed bed screen is arranged at a critical position of the air supply chamber and the operation air chamber, and the air supply chamber provides air flow for the operation air chamber by virtue of the seed bed screen and the air supply pipe; the seed cleaning shifting finger is arranged in the operation air chamber, is close to the roller in a gap and is in an L shape, a shorter side of the seed cleaning shifting finger is in a right trapezoid shape, and relative position between a bevelled edge of the trapezoid and a seed attaching hole can be adjusted by virtue of a seed cleaning shaft fixedly connected with the shorter side; the pressure relief wheel is arranged inside the seed sowing roller and is close to the interior of the roller by virtue of a tension spring; and the inlet of the seed guiding pipe is close to the roller in the gap and is dead against a contact point of the pressure relief wheel and the roller. The precision seed sowing device realizes centralized precision seed sowing, seed attaching pressure difference and a seed sending air flow are provided by virtue of a positive pressure system, a seed layer is disturbed by utilizing the air flow, and seed filling probability is improved. The precision seed sowing device is applicable to precision seed sowing of large-row-spacing crops such as corn and soybean.

The invention discloses a titanium alloy polyhedron rudder frame and preparation method thereof. The section of the titanium alloy polyhedron rudder frame is a right trapezoid which comprises a leading hedge slope and an inclined surface. The leading hedge slope and the inclined surface comprise two slopes which are symmetrical about the right trapezoid. The section of the inclined surface is a right trapezoid which shares the same right-angle waist with the rudder frame. The upper base of the inclined surface is less than the upper base of the rudder frame. The inclined surface is provided with several weight loss windows, which makes integrated components form a framework structure.

The invention discloses a method for performing anti-wear treatment on a hopper of a loading machine, which comprises the following steps: using a low-carbon steel or low-alloy steel plate as a base plate, selecting a build-up welding flux-cored soldering wire of which the diameter is between 2.0 and 4.0 millimeters special for the hopper of the loading machine, and welding a wear-resisting layer of which the thickness is between 3.5 and 8.0 millimeters on the base plate by adopting a visible arc build-up welding or gas coverage build-up welding process to prepare a wear-resisting composite steel plate; by adopting a plasma cutting device, cutting out a left wear-resisting plate and a right wear-resisting plate in a right trapezoid shape respectively, a middle wear-resisting plate in an isosceles trapezoid shape, and two bottom plates in isosceles trapezoid shapes on the wear-resisting composite steel plate; leveling the plates; and putting the cut wear-resisting layers of the left wear-resisting plate, the middle wear-resisting plate, the two bottom plates and the right wear-resisting plate outwards, and welding the wear-resisting layers on the outside surface of the hopper bottom of the main cutting board side of the hopper respectively through gas shielded arc welding or welding rod arc welding so that the wear-resisting layers are integrated with the original hopper bottom into a whole. After the treatment by the method, the service life of the hopper is greatly improved, the frequent maintenances are avoided, the working efficiency of the loading machine is improved, and steel materials are saved.

The invention discloses an access passage only enabling pigs to be fed separately, which comprises a passage and rails arranged at two sides of the passage, wherein the passage is provided with an entry and an exit; the entry end of the passage is provided with an automatic door which comprises two doors, a door lock and a control system; each door comprises a rotating shaft rod and a plurality of wheel rods with the same length; the free end of each wheel rod is provided with a plastic wheel of a rotating shaft in the vertical direction; the door lock is arranged between the two doors, and comprises two sets of oppositely arranged bayonet lock devices, a splint and a push-off pin; each set of bayonet lock device comprises a right trapezoid block, a support block and the rotating shaft; the control system comprises an eccentric wheel, a DC motor, a metal detector, an infrared sensor and a lever, and controls the automatic opening and closing of the door lock; and the door lock controls the opening and closing of the two doors. The access passage can prevent the pigs from fighting for feeder in the process of raising the pigs in groups on a large scale, and conveniently realize the feeding and management of an individual pig.

The invention relates to a cleaning device for removing oil stains on petroleum pipes. The cleaning device comprises a stain scrapping device, an edge grinding device and a cleaning device body which are connected through threads from front to back in sequence; the interiors of the stain scrapping device, the edge grinding device and the cleaning device body are of cavity structures; the stain scrapping device comprises a hollow rod, a spring and scrapping knives evenly hinged to the outer wall of the hollow rod, the longitudinal sections of the scrapping knives are in right trapezoid shapes, one end of the spring is connected with the scrapping knives, and the other end of the spring is connected to the lateral wall of the hollow rod; the hollow rod is of a cavity structure with an opening in the upper end, the lower end of the hollow rod is in a semi ball shape, and leakage holes are evenly formed in the semi-ball-shaped outer wall of the lower end of the hollow rod; the hollow rod is connected with the edge grinding device through threads. In the cleaning device, the stain scrapping device, the edge grinding device and the cleaning device body are connected through the threads from front to back in sequence, the oil stains on the petroleum wall pipes are sequentially washed for three times so as to achieve the high stain removing effect.

The invention discloses a cylinder cover clamping device comprising a slope cushion block and a clamping device body, wherein the section of the slope cushion block is in a right trapezoid shape, the plane where the right-angle waist of the right trapezoid is located serves as the bottom face of the slope cushion block, the plane where the oblique waist is located serves as a cylinder cover clamping face, a cylindrical pin is arranged on the cylinder cover clamping face, the projection, on the cylinder cover clamping face, of the workpiece original point of a cylinder cover falls on the center line of the cylindrical pin, and the included angle between the cylinder cover clamping face and the bottom face of the slope cushion block is the same as the slant angle of a cylinder cover air intake slope. Due to the fact that included angle between the cylinder cover clamping face and the bottom face of the slope cushion block is the same as the slant angle of the cylinder cover air intake slope, after the cylinder cover is installed on the cylinder cover clamping face, the cylinder cover air intake slope is located in the vertical face, and machining for the air intake slope is replaced by machining for the plane located in the vertical face. The invention further discloses a machining method of the cylinder cover air intake slope by the adoption of the cylinder cover clamping device. The machining method can effectively lower production cost for machining the slope.

The invention discloses a lift adjusting device. The lift adjusting device on a dovetailed bottom plate is in fit with a dovetailed upper plate to do linear movement; an upper inclined block and a lower inclined block are right trapezoids and the inclined waists are matched with each other; a fixture is arranged on the upper inclined block; a vertical movement guide frame is enclosed by four baffle plates on the dovetailed upper plate; the upper inclined block and the lower inclined block are in the space enclosed by the four baffle plates; a screw rod passes through the upper inclined block and the lower inclined block horizontally along with the direction vertical to the linear movement direction of the dovetailed upper plate and is connected with the right baffle plate through a bearing block and an end cover; a screw nut is fixed with the lower inclined block; a hand wheel is arranged on the screw rod and is positioned on the right baffle plate of the vertical movement guide frame; and when the hand wheel is rotated, the screw rod drives the screw nut to drive the lower inclined block to do reciprocating motion. The lift adjusting device greatly reduces the height dimension, meets requirements of different parts on height change range, has high adjusting rigidity and a simple structure, can be positioned accurately and is easy to operate.

The invention relates to railway fine tool machining auxiliary devices, in particular to a railway fine tool machining auxiliary clamp. The rail way fine tool machining auxiliary clamp comprises a base, a strip-shaped iron block, V-shaped grooves, fixing holes, pressing blocks, nuts, screw rods and positioning pins. The two positioning pins are arranged at the lower end of the base, and the strip-shaped iron block is connected to the upper end of the base. The four V-shaped grooves are formed in the strip-shaped iron block, and the strip-shaped iron block is provided with three isosceles trapezoid blocks in the middle and two non-isosceles right trapezoid blocks at the two ends. The middles of the upper ends of the two right trapezoid blocks and the middles of the upper ends of the isosceles trapezoid blocks are respectively provided with one fixing hole, and the upper ends of the other two isosceles trapezoid blocks are designed to be provided with the screw rods. The screw rods are sleeved with the pressing blocks, and the pressing blocks are provided with the nuts to be screwed on the screw rods. The railway fine tool machining auxiliary clamp has the advantages that the design is simple, using is convenient, fixing can be safely and effectively conducted, a plurality of fine tools can be machined at a time, the efficiency is improved, and cost is lowered.

The invention discloses a triaxial truss type high-speed servo robot. The triaxial truss type high-speed servo robot comprises a machine base, an electric control box, a slide gun barrel, a drawing beam, an arm bracket and an arm beam; the electric control box is arranged at one side of the slide gun barrel, and the slide gun barrel is erected on the machine base; the drawing beam is erected on the slide gun barrel, and the drawing beam is repeatedly glided along the length direction of the slide gun barrel; the drawing beam is a reversed-right-trapezoid shaped structure, and one end of the drawing beam closing to the middle of a trapezoid waist part is a hollow form; the arm beam is crossed through the hollow part of the drawing beam and vertically erected on the drawing beam through the arm bracket, and the arm bracket is repeatedly glided along the length direction of the drawing beam; meanwhile, the arm beam is vertically glided in turn along the arm bracket. By reducing the structure and weight of the drawing beam, the drawing beam can be rapidly moved on the slide gun barrel; meanwhile, the arm beam is vertically erected at the hollow place of the drawing beam, so that the space occupancy ratio is reduced, and thereby the rapid material picking is realized, the picking cycle is short, and the working efficiency of an injection molding machine is improved.

The invention discloses a composite material for airborne radomes, and a preparation method thereof. The composite material for airborne radomes comprises a surface coating layer, an outer skin layer, a sandwich layer and an inner skin layer, the sandwich layer is arranged between the outer skin layer and the inner skin layer, and the surface of the outer skin layer is coated with the surface coating layer; the thickness of the outer skin layer is 0.2-1mm; the sandwich layer is made of polymethacrylimide, and has a right trapezoid structure, the short edge thickness is 4-30mm, and the long edge thickness is 4.5-34mm; and the thickness of the inner coating layer is 0.2-1mm. The preparation method comprises the following steps: preparing an inner skin layer prepreg through manual pasting dipping, overlaying a sandwich layer material, solidifying, preparing an outer skin layer prepreg through manual pasting dipping, solidifying, spraying the surface coating layer, and solidifying. The composite material for airborne radomes has the advantages of excellent environment resistance, good whole bearing ability, and maintenance of a high wave penetration rate in double wavebands.

The invention discloses a shelf beam and a manufacturing method thereof. The shelf beam comprises a beam body and connecting pieces arranged at the two ends of the beam body. The beam body is in serial connection with the connecting pieces and a shelf stand column through a safety pin so as to be connected with the shelf stand column. The beam body is a hollow pipe with an inverted right trapezoid section, the trapezoid acute angle of the hollow pipe is concave inwards to form a first groove used for holding a shelf plate, and two side edges of the shelf plate abut against the inside of the first groove so that the shelf plate can be connected with the shelf beam. The shelf beam is of a special right trapezoid section structure, the beam itself has high mechanical strength, a reinforcing groove is formed in the beam, the supporting strength of the beam is further improved, and after the beam is connected with the stand column, the beam can bear heavy goods without other auxiliary supports. Additionally, the beam is provided with the groove for holding the shelf plate, and accordingly a shelf is convenient to install and detach.

The invention provides a method for accurate detection of material defect and thickness by using a technology of digital radiography transillumination, and belongs to the field of nondestructive test. A test block with fixed gradient is placed on a material to be detected, a radiation field from top to bottom passes through a workpiece to be detected and the test block with fixed gradient at the same time, a digital ray reception plate receives attenuated ray, and the ray is converted into a two-dimensional image by a data displaying and processing unit. According to a flat weld detection, the test block with fixed gradient is placed beside the workpiece to be detected; the cross section of the test block is a right trapezoid, wherein a right-angle side is horizontally placed on the horizontal plane same to that of the workpiece; according to a small diameter tube detection, a test block with gradient is used, and the cross section of the test block along the axial direction of the test block is semi-toroidal, and the cross section of the test block along the circumferential direction is right trapezoid; internal diameter of the test block with gradient is equal to the external diameter of the small diameter tube, and the cross section of the test block with gradient is semi-toroidal, the test block is tightly wrapped outside the workpiece to be detected and is placed beside the weld. The method can be used for accurately measuring height of the defect and weld reinforcement or the like without misjudgement.

The invention discloses a more-firmly-spliced solid-wood-imitated aluminum alloy floor comprising an aluminum alloy floor body. The aluminum alloy floor body comprises an upper aluminum alloy plate and a lower aluminum alloy plate which are arranged at the upper end and the lower end correspondingly, and the left ends of the upper aluminum alloy plate and the lower aluminum alloy plate are provided with a left support plate. The left end of the left support plate is provided with a buckling plate, and a right support plate is arranged on the right side of the position between the upper aluminum alloy plate and the lower aluminum alloy plate. A plurality of grooves are formed in the right support plate, compressing springs are arranged in the grooves, and the right sides of the compressing springs are provided with stainless steel balls. A rubber layer is arranged on the outer wall of a right-trapezoid limiting block. The stainless steel balls can squeeze the buckling plate under the effect of the compressing springs, and thus the right-trapezoid limiting block is tightly pressed to the buckling plate, so that splicing is firmer, and the bearing capacity is higher; and the connecting positions of the two aluminum alloy plates are attached together tightly through the rubber layer, so that vibration between the two aluminum alloy plates is greatly reduced, abnormal sound is not generated, and the mute effect is good.

The invention discloses a broadband planar end-fire circularly-polarized antenna. The antenna is of a single-layer dielectric plate structure which is divided into an SIW structure and a front-back linear tapered slot structure. The antenna includes a dielectric substrate which is plated with an upper metal layer on the upper surface and a lower metal layer on the lower surface. The SIW structure has three rows of plated through holes, namely, left and right rows of plated through holes symmetric about the central axis of the dielectric substrate and a row of plated through holes at the bottom of the antenna. The dielectric substrate is provided with a feed point. The upper metal layer and the lower metal layer of the front-back linear tapered slot structure are of a right trapezoid structure, and the upper bases of the right trapezoids coincide with the top end of the single-layer dielectric plate. The broadband planar end-fire circularly-polarized antenna adopts a substrate integrated waveguide, and has the advantages of simple structure, circular polarization, wide band, low cost, low profile, and easiness to be conformal.

The invention discloses a full-suspension vibration avoiding type full-automatic washer dryer combo which comprises an installation seat and a first installation groove, wherein the first installationgroove is formed in the top of the installation seat, an washer dryer combo body is arranged in the first installation groove, first sliding grooves are formed in the two sides of the eluting machinebody, first springs are welded to inner walls of the sides close to each other of the two first sliding grooves, first sliding plates are welded to the ends far from each other of the two first springs, second sliding grooves are formed in inner walls of the two sides of the first installation groove, the sides far from each other of the two first sliding plates respectively extend into the corresponding second sliding grooves and are fixedly provided with second magnets, first fixed plates are welded to the two sides of the installation seat, and second fixed plates under the first fixed plates are welded to the two sides of the installation seat. The full-suspension vibration avoiding type full-automatic eluting machine disclosed by the invention has the advantage of high practicability; by means of first magnets and right trapezoid blocks, convenience is brought to installation of the eluting machine body; furthermore, by means of rotating shafts and buffer springs, elasticity of the buffer springs is enhanced, and simpleness in shock absorption is achieved.

The invention provides water bloom alga refloating equipment and a water bloom alga refloating method. The water bloom alga refloating equipment comprises an alga water collecting groove, wherein the alga water collecting groove is a hollow chamber with the slit side; right trapezoid-shaped floating boxes are arranged on the left end part and the right end part of the alga water collecting groove; a water level control submerged pump is arranged in the middle of the lower part of the alga water collecting groove and is connected with a central controller; the central controller is used for controlling on and off of the submerged pump through a water level detector; the lower part of the water level control submerged pump is connected with a hose; an alga water separation device is fixed on a box body on the embankment side. The water bloom alga refloating method provided by the invention has the advantage of reducing power dependence. When the water surface is higher than the upper surface of the alga water collecting groove, a large amount of alga water is collected in the alga water collecting groove and the water level control submerged pump does not work, so energy can be saved, the cost is further reduced, and one-man operation is facilitated.

The invention relates to a preheating treatment process before plastic particle injection molding. A bottom plate, a supporting frame, a feeding device and a preheating device are included, the supporting frame is mounted on the upper end of the bottom plate, the section of the supporting frame is of a right trapezoid structure, the feeding device is mounted on the upper end of the left side of the supporting frame, the preheating device is mounted in the supporting frame, and the problems that when an existing device carries out preheating on plastic particles, the plastic particles are commonly stacked together, the preheating effect in the plastic particles is poor, heating is not uniform, subsequent machining of the plastic particles is affected, when the existing device carries out preheating on the plastic particles, the heated plastic particles are easily bonded on the outer side of the conveying belt, the bonded impurities on the conveying belt cannot be effectively removed, and the machining efficiency of the plastic particles is affected can be solved.

The invention relates to a clamp for a plate. The clamp comprises a shell in the shape of a square prism, wherein a cavity in the shape of the square prism is formed in the shell; an upper through hole and a lower through hole are longitudinally formed in the upper end surface and the lower end surface of the shell; a pair of pressure blocks and a pair of clamping blocks of which sections are in the shapes of right trapezoids are arranged in the shell; the plane on which the right-angled waists of the pressure blocks are located and the inner side wall of the shell are connected by virtue of a spring; a plurality of roller slots parallel to the inclined waists are arranged on the planes on which the inclined waists of the pressure blocks and the clamping blocks are located; rollers in pair are arranged in the roller slots; the rollers in pair are connected through roller shafts; the pressure blocks and the roller shafts corresponding to the clamping blocks are connected through connecting rods; lifting ropes capable of extending out from the through holes in the shell are arranged on the upper end surfaces of the clamping blocks. According to the technical scheme of the clamp, the plate is clamped through the clamping blocks, so that the area for clamping the plate is increased, and the stress on the plate is reduced; meanwhile, the stress on the clamping part of the plate is relatively uniform, and damage to the plate due to a fact that the cable ropes are adopted in the prior art, is avoided.

The invention discloses a double-super cantilever type electromagnetic gantry crane with a large base distance. The double-super cantilever type electromagnetic gantry crane comprises main beams, wherein the main beams are supported with support legs, and a small vehicle is arranged on the main beams. The small vehicle comprises a vehicle frame. A hoisting mechanism and a walking mechanism are arranged on the vehicle frame. A rotary electromagnetic hanging frame is connected to the hoisting mechanism of the small vehicle through a steel wire rope, and the double-super cantilever type electromagnetic gantry crane is characterized in that each support leg is a bracket of which at the least a top end is provided with a cross beam; the two main beams are respectively fixed on bottom surfaces of cross beams which are fixed on top ends of the support legs. Sections of the main beams are right trapezoids, upper end surfaces of the main beams which are narrow are contacted with the bottom surfaces of the cross beams on the top ends of the support legs, and inclined surfaces of the two main beams are oppositely arranged. Support plates are arranged at lower parts of the inclined surfaces of the main beams, rails are arranged on the support plates, and the small vehicle is arranged on the rails. Trusses are arranged on tops of the main beams, and crossed pulling rods are respectively arranged between the trusses and the support legs. A relationship between a span S of the crane and cantilevers L of the main beams is L is larger than 1.4S, and the relationship between the base distance B and height H from the crane to a bottom part of the beam is B is greater than or equal to 1.75H. The crane has a large cantilever and a large base distance, and can directly hoist steel products to a storage yard in span through inner parts of the support legs.

The invention relates to a gluing-free floor split block, which comprises a plurality of floor strips, wherein the floor strips at least comprise bottom layers and surface layers; the bottom layers of the floor strips are connected, and slots are formed between the surface layers of the floor strips; cogs in the shape of a right trapezoid or an isosceles trapezoid are formed at the end parts of the same sides of the alternating floor strips; mortices matched with the cogs are formed between the cogs; inclined planes are formed on the lower bottom edges of the cogs; inverted inclined planes that can fit into and be in butt joint with the inclined planes are formed on the lower bottom edges of the mortices; the width of each slots ranges from 0.1 to 2mm; the inclined angle formed between each inclined plane and the bottom surface of each bottom layer is set to be 5 to 85 degrees; upper bottom edges of the cogs and the end parts of the floor strips are connected integrally; and the basic angle of the right trapezoid or the isosceles trapezoid is any acute angle less than 90 degrees. The gluing-free floor split block can thoroughly solve the problems of deformation, groove milling, warping, displacement and the like on the premise of not increasing manufacture cost and construction difficulty.

The invention discloses an adjustable pier. The adjustable pier comprises two right-trapezoid-table shaped side flexible units and at least one wedge-shaped middle flexible unit. The bevel of each of the two right-trapezoid-table shaped side flexible units is in contact fit with the wedge face, adjacent to the corresponding bevel, of the corresponding wedge-shaped middle flexible unit. The wedge-shaped middle flexible units are in contact fit through the wedge faces of the wedge-shaped middle flexible units. The right-trapezoid-table shaped side flexible units and the wedge-shaped middle flexible unit are provided with adjusting holes and in series connection through studs. The two ends of the studs are provided with nuts and threads matched with the nuts. The adjustable pier is safe, reliable, capable of conducting height fine adjustment, simple, convenient and effortless to operate, high in work efficiency, further capable of being used in combination with other support piers, and flexible in combination, and thus the adjustable pier achieves the advantages of being high in fine adjustment ability, high in loading capacity, simple and convenient to operate and the like.

The invention discloses an improved type shockproof self-locking bolt which comprises a screw rod, a nut and a locking block; the upper end and the lower end of the screw rod are provided with corresponding locking grooves; sawteeth are uniformly distributed on the peripheral ring of the outside diameter end of an annular boss of the left end of the nut, and an orientation of the tooth tips is setto be an anticlockwise direction; the right end part of the locking block is provide with a large circular concave hole; the shape of the side surface of a locking portion is set to be an inverted right trapezoid; the inclined surface of the locking portion can smoothly slide across the inclined surfaces of sawteeth on the annular boss when a compression spring retracts, and a vertical plane of the locking portion can prop against the tooth tips of the sawteeth downward under the elastic force effect of the compression spring; the inside diameter of a large circular through hole of the locking block is a little larger than the outside diameter of the screw rod; and the top end and the bottom end of the inner wall of the large circular through hole are provided with ridges adapted to the locking grooves of the upper end and the lower end of the screw rod respectively. The improved type shockproof self-locking bolt provided by the invention can prevent the nut from loosening and fallingfrom the screw rod through rotating, is more reasonable in structure and has the advantages of rapidness and convenience in mounting and disassembly.

The invention belongs to the field of metallurgical equipment and particularly relates to a rotary spray gun for use in molten iron desulfurization, which comprises a flange connecting piece (1), an outer tube (2) fixedly connected with the flange connecting piece (1), a stirring blade (4) fixedly connected with the lower part of a stirring shaft (2), and a refractory material layer (5) arranged on the stirring shaft (2) and stirring blade (4), wherein the stirring blade (4) is a right trapezoid; the plane (8) of the refractory material layer on the top of the stirring blade (4) forms deflection angle beta which is more than zero DEG C and less than or equal to 45 DEG C with a horizontal plane; an inner tube (3) is arranged in the inner tube (2); the cross section of the stirring blade (4)has a 'cross' structure; and the thickness a of the front (41) of the refractory material layer of the stirring blade (4) is greater than the thickness b of the back of the refractory material layerof the stirring blade (4). The rotary spray gun is simple in structure, convenient in operation, desirable in desulfurization effect, long in service life, high in desulfurater utilization rate and free from sulfur slag accumulation.

The invention relates to a pay-off support table with an adjustable support width for a cable coiling drum. The pay-off support table comprises a base. A handle is arranged on the left side surface of the base, traveling wheels are symmetrically mounted on the right side surface of the base, slide grooves are symmetrically formed in the left portion of the base, a mounting boss is arranged on the right portion of the base, and a slide seat is arranged on the upper side of the left portion of the base; a left oblique right-trapezoid support is mounted on the upper side of the slide seat; a right oblique right-trapezoid support is fixedly connected to the upper side of the mounting boss, and the middle of the front of the left oblique right-trapezoid support is connected with the middle of the front of the right oblique right-trapezoid support by a distance adjusting device. The pay-off support table has the advantages of low manufacturing cost, convenience in use, reasonable structural design and the like. Besides, the width of a portion between the left oblique right-trapezoid support and the right oblique right-trapezoid support can be adjusted by the aid of the distance adjusting device, so that a support width adjustable function can be realized, the application of the pay-off support table can be broadened, the pay-off support table is portable, and the shortcoming of difficulty in shifting existing pay-off racks can be overcome.

The invention provides a compression molding die of a thermoplastic composite component provided with I-shaped reinforcing ribs. The compression molding die comprises a base and one or more groups ofupper modules arranged on the base, wherein oblique planes with narrow upper parts and wide lower parts are arranged on left and right trapezoid strips of each of the upper modules; and the oblique planes with wide upper parts and narrow lower parts matched with the oblique planes of the left and right trapezoid strips are arranged on left and right wedge blocks. A group of oblique planes fittingeach other and sliding relatively is arranged on each of the left and right sides, so that the downward mould pressing pressure of a press cake is converted into the horizontal pressure pointing to the I-shaped reinforcing ribs through the left and right trapezoid strips, that is, the single vertical mould pressing pressure is converted into the mould pressing pressure in downward, left and rightdirections, the mould pressing pressure in the horizontal direction does not need to be additionally set, equipment and technology are simplified, rapidity and reliability are realized, and mass production of I-shaped reinforcing rib components of thermoplastic resin based composite is promoted.

The invention discloses an optical assembly for being vertically coupled with a photoelectric transceiving array and a manufacturing method, relating to the field of optical fiber communication. The optical assembly comprises an optical signal transmission device and a reflecting prism, wherein the optical signal transmission device is a multi-core optical fiber array or an array waveguide grating chip; the reflecting prism is a right trapezoid prism or a right triangle prism; the optical signal transmission device is connected with the reflecting prism through an adhesive. Rotation of a light path is realized through the reflecting prism, so that the output end face of the array waveguide grating chip or the output end face of the optical fiber array can be avoided, and the problem that the optical fiber is broken and the ground optical fiber in the later using stage is easily damaged and cannot be used when the optical fiber is ground is solved. According to the optical assembly, large-scaled production is easy and the yield is relatively high. The vertical coupling efficiency between the optical assembly and the photoelectric transceiving array can be effectively improved.

The invention discloses a single-fiber bi-directional light receiving and emitting device which comprises a TO tube socket, a laser device encapsulated in a TO tube shell, a detector encapsulated in the TO tube shell, lenticulation with different thicknesses and an optical fiber connector. The cross section of the TO tube socket is of a right trapezoid, the right angle surface of the TO tube socket is connected with TO base pins, and the direction of the base pins is parallel to the axial direction of the TO tube shell. The laser device and the detector are welded on the inclined plane of the TO tube socket and are arranged in parallel, and electrode leading wires are led to the base pins from the inclined plane of the tube socket through the whole TO tube socket and are connected with the base pins. The lenticulation with different thicknesses is arranged and fixed obliquely, and the intersection angle between the lenticulation with different thicknesses and the axial direction of the TO tube shell is beta. The laser device emits optical signals, and the optical signals are refracted through the lenticulation with different thicknesses and enter an optical fiber in the optical fiber connector. External light enters the single-fiber bi-directional light receiving and emitting device through the optical fiber, and enters the detector through the refraction of the lenticulation with different thicknesses. Through the utilization of the single-fiber bi-directional light receiving and emitting device, cost is saved, and the welding and mounting of BOSA modules are made to be convenient at the same time.

The invention relates to a landslide model test device, comprising a landslide model box, wherein a model slope body and a freeze thawing action unit are arranged in the landslide model box; the modelslope body is stacked on a bottom plate of the landslide model box, one side face of the model slope body is a free slope surface, the other side faces of the model slope body are limited by side plates of the landslide model box, such that a section of the model slope body perpendicular to the slope surface is a right trapezoid; a freeze thawing simulation unit comprises a condensing pipe network corresponding to the slope surface and buried under the slope surface, and the condensing pipe network is connected with a heat exchange equipment main body at the outside of the landslide model box; and a plurality of temperature sensors are buried under the slope surface. The landslide model test device provided by the invention can effectively carry out tests for simulating and studying the influence of seasonal freeze thawing on landslide geological disasters via the freeze thawing simulation unit, and can effectively carry out tests for simulating and studying the influence of freeze thawing slide promotion under the action of water on the landslide geological disasters, in combination with an existing rainfall system or the like.