57results about How to "Increase the total length" patented technology

The invention discloses a wide-angle lens which comprises a first lens group with negative focus length, a diaphragm and a second lens group with positive focus length from an object, wherein the first lens group comprises a first lens with negative focus length, a second lens with negative focus length and a third lens with positive focus length; the second lens group comprises a fourth lens, a fifth lens and a sixth lens, the fourth lens is provided with positive focus length, and the fifth lens and the sixth lens have positive focus length after being glued; and the first lens group and the second lens group meet the following condition of -3<fL1 / fL2<-0.5, wherein fL1 expresses the combined focus length of the first lens group, and fL2 expresses the combined focus length of the second lens group. By adopting six full-glass lens structures, the invention has the advantages of compact structure, better machining manufacturability and low production cost. The wide-angle lens has better imaging quality under the condition of ensuring wide angle, and improves the imaging quality because the whole optical system enlarges the tolerance.

The extender lens apparatus is detachably attached to an image-forming optical system including a first main lens unit disposed closest to an object and a second main lens unit disposed between the first main lens unit and an image plane. The apparatus includes a first extender lens unit to be inserted in a space closer to the first main lens unit than the second main lens unit, and a second extender lens unit to be inserted in a space closer to the image plane than the second main lens unit. The first extender lens unit has a magnification increasing effect. The apparatus is capable of varying a magnification of the image-forming optical system while maintaining good optical performance without greatly increasing the entire length of the image-forming optical system.

A nozzle assembly (48) for a kinetic spray system includes a convergent portion (72) , a throat portion (82) , and a divergent portion (76) , each cooperating together to define a passage (66) therethrough for passing a mixture of powder particles (22) suspended in a flow of a high pressure heated gas. The nozzle assembly (48) further includes an extension portion (86) attached to the divergent portion (76) and extending to a distal end (88) a pre-determined length (L) from the divergent portion (76) of the nozzle assembly (48) . The extension portion (86) permits a dragging force exerted on the powder particles (22) by the flow of high pressure heated gas to act upon the powder particles (22) for a longer duration of time, thereby permitting the powder particles (22) to accelerate to a greater velocity than has been previously achievable.

The invention discloses an optical lens, a camera module and electronic equipment. The optical lens comprises the following lens elements which are sequentially arranged from an object side to an image side along an optical axis: a first lens element with positive focal power having a convex object side surface and a concave image side surface; a second lens element with negative focal power having a convex object side surface and a concave image side surface; a third lens element with focal power; a fourth lens element with focal power having a concave object side surface and a convex image side surface; a fifth lens element; a sixth lens element; and a seventh lens element with negative focal power having a concave object side surface and a concave image side surface. The optical lens also satisfies the relational expression: 2.30 < FNO * TTL / ImgH < 2.38. According to the optical lens, the camera module and the electronic equipment provided by the embodiment of the invention, the design requirements of miniaturization, large aperture, large image plane and high imaging quality of the optical lens can be met.

The invention relates to a method for protecting an earth electrode line. The method is characterized by comprising the steps as follows: a third current transformer (T3) and a fourth current transformer (T4) are added to the positions, from two groups of leads of the earth electrode line at an earth electrode tip to a frame respectively; and a third current (IDEE1) flowing through the third current transformer (T3) and a fourth current (IDEE2) flowing through the fourth current transformer (T4) are fed into an electrode protection device in a convertor station through earth electrode line cables respectively, and are logically compared with a first current (IDEL1) flowing through a first current transformer (T1) and a second current (IDEL2) flowing through a second current transformer (T1) at the outlet part of the earth electrode line in the convertor station. Experimental simulation proves that the overall operation safety and reliability of the convertor station can be improved by the earth electrode line added with differential protection; and meanwhile, the method is very helpful to improvement of the operation maintenance and management level of the earth electrode line and promotion of state overhaul work.

A refrigeration system employing carbon dioxide, or the like, as refrigerant of which the pulsation of pressure is reduced sufficiently. The refrigeration system (1) comprises a first refrigerant path (204), p type mufflers (20, 20a), and a second refrigerant path (205). The p type muffler has a first silence space (201), a second silence space (202), and communication paths (203, 203a). The first silence space communicates with the first refrigerant path. The second silence space is arranged below the first silence space. The communication path extends from the lower end of the first silence space toward the outside of the first silence space, and communicates with the second silence space. The second refrigerant path extends from the lower end of the second silence space.

The invention relates to a continuous zooming projection lens. An optical system lens group comprises a focusing group U1 with negative focal power, a focusing group U2 with positive focal power, a compensating group U3 with negative focal power and a back fixed group U4 with positive focal power, which are distributed along an optical axis in sequence from the screen side to the image plane side; the focusing is realized by the back-and-forth movement of the U1 group; the zooming is realized by the homodromous movement of the U2 and the U3 from the wide angle end to the remote shooting end along the optical axis; in the zooming process, the total distance from the first surface of a lens to the image plane is not changed; the projection lens has the characteristic of achieving satisfactory imaging quality on the image plane of a longer back working distance, and the like; and the lenses all adopts spherical lenses, has high manufacturability and is suitable for mass production.

The invention provides a package structure for a product, belonging to the machinery technical field. The package structure solves the problems that only part of the product can be seen and the whole product can not be seen after the product is packaged by the existing package structure for the product, etc. The package structure for the product comprises a sheet mark board, a package sheet I and a package sheet II made of transparent plastics, wherein, the mark board is provided with a positioning hole; the package sheet I and the package sheet II are overlapped on the two sides of the mark board; the periphery of the package sheet I and the periphery of the package sheet II are fixed; a fixing structure for fixing the mark board is arranged between the package sheet I and the package sheet II; the package sheet I and the package sheet II on the two sides of the positioning hole protrude outwards to form a cavity for placing the product. The package structure for the product ensures that the shape of the whole product can be seen after package, thereby being characterized by convenient viewing and simple structure.

The electronic book reading machine consists of casing, liquid crystal display screen, key array, computer interface, battery compartment and circuit board connected together. Its compression method supports blocked compression and partial decompression. The reading machine decompresses the compressed text to the present reading position and displays text in its display screen; and the partial decompression is direct decompression after equal-width cutting. The "blocked compression" of the present invention can utilize the memory space fully and increase the length and the number of the stored text greatly. The "partial decompression" makes it possible to decompress the required content randomly and this raises the responding speed greatly. The electronic reading machine can be operated easily and flexibly.

The invention discloses a casting machining cutter with a replaceable cutter bit, belonging to the technical field of casting and machining and aiming at providing the casting cutting machining special cutter. The cutter comprises the cutter bit, a cutter handle and a connecting rod, wherein the cutter bit is provided with cutting blades and connected with the cutter handle by adopting screw threads or top threads, and a connecting position is positioned by adopting conical degree and an end surface; and the cutter bit is connected with the connecting rod by adopting the screw threads or the top threads, and the connecting position is positioned by adopting the conical degree and the end surface. The invention is specially used for the cutting machining of a sand mould or a sand core, overcomes the defect of poor abrasion resistance of a common cutter by adopting PCD (Polycrystalline Diamond) or superhard materials, solves the problems of cutter abrasion during the casting cutting machining, also meets the requirements for machining of a slender deep hole in such a way that the total length of the cutter is increased by adopting of the connecting rod, not only prevents the machining interference, but also is flexibly disassembled, thereby meeting the requirement for the casting cutting machining of different types.

The invention relates to a rotor (17) of a turbocompressor consisting of an impeller (21) and a rotating shaft (12) supporting the impeller (21), having a fastening mechanism (70) comprising : a mechanical coupling (71), formed on the respective end faces of the impeller (21) and the rotating shaft (12); a tension bolt (74), inserted into a through hole formed in the rotation center of the impeller (21); The fastening nut (80) is screwed with the first external thread (77) formed on one end of the tension bolt (74); the receiving hole (78) is formed on the end surface of the rotating shaft (12) to receive the tension bolt (74) ) part of the extension (75); the internal thread (79) is formed on the bottom surface of the receiving hole (78), and is screwed with the second external thread (76) formed on the other end of the tension bolt (74). According to the present invention, it is possible to increase the elongation of the tie bolts, thereby improving the efficiency and stabilization of the joining operation.

The invention discloses a landscape creativity bulletin board, and relates to the technical field of landscape bulletin boards. The landscape creativity bulletin board comprises a base, wherein a rotating table is arranged above the base; the rotating table comprises a rotating plate, supporting legs and rolling balls; a display table comprises three triangle bulletin boards, rotating rods and first gears; the middle of the three triangle bulletin boards is provided with a supporting rod, the top end of the supporting rod is movably connected with the center of the bottom of a curve baffle, the bottom of the supporting rod is movably connected with a second gear meshed with the two first gears, the bottom end of the supporting rod penetrates through the rotating plate and is movably connected with the base. According to the landscape creativity bulletin board, by the rotation of the rotating plate and the autorotation of the triangle bulletin boards taking the rotating rod as a center,LED display screens and paper landscape propaganda pictorials on the triangle bulletin boards can be effectively presented to people from multiple angles, so that the landscape creativity bulletin board has third dimension and feeling of freshness, improves people's aesthetic appreciation and reading interest, increases the publicity space, and strengthens the propaganda work of the landscape.

The invention discloses an optical lens, a camera module and electronic equipment, and the optical lens comprises a first lens with refractive power, a second lens with refractive power, a third lens with refractive power, a fourth lens with refractive power, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, the object side surface and the image side surface of the second lens are respectively a convex surface and a concave surface; a third lens element with negative refractive power having a concave image-side surface; the object side surface and the image side surface of the fourth lens are convex surfaces; the object side surface and the image side surface of the fifth lens are respectively a concave surface and a convex surface; the object side surface and the image side surface of the sixth lens are concave surfaces; a seventh lens element with refractive power having a concave object-side surface; the image side surface of the eighth lens is a convex surface; the object side surface and the image side surface of the ninth lens are respectively a convex surface and a concave surface; the optical lens satisfies 0.3 lt; sD < 12 > / IMGHlt; and 0.5. With the adoption of the scheme, while the imaging quality is ensured, the optical system has the characteristics of miniaturization and large field angle.

The invention discloses an optical lens, a camera module and electronic equipment. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged along an optical axis from an object side to an image side, the first lens has positive focal power, and the object side surface and the image side surface of the first lens are a convex surface and a concave surface near the optical axis respectively; the second lens has positive focal power, the image side surface of the second lens is a convex surface at the light inlet axis, and the third lens has focal power; the fourth lens has focal power, and the object side surface of the fourth lens is a convex surface near the optical axis; and the fifth lens has focal power, the object side surface and the image side surface of the fifth lens are respectively a convex surface and a concave surface near the optical axis, and the optical lens meets the relational expression: 1.2 < SD11 / SD21 < 1.6. According to the optical lens, the camera module and the electronic equipment, the ultra-wide-angle imaging effect can be realized on the basis of considering the miniaturization and light and thin design of the optical lens.

The invention relates to the field of bridges, in particular to an integral abutment bridge structure based on composite flexible piles and a construction method thereof. The structure comprises an abutment horizontally arranged along a revetment, wherein the abutment is supported by the multiple vertical flexible piles embedded in the revetment, the flexible piles are composed of an ordinary concrete area embedded in the ground under the earth surface line and an ultra-high-performance fiber reinforced concrete composite material area connected to the ordinary concrete area, filling soil is stacked in the spaces between the abutment and the shoreside ground and between the flexible piles and the shoreside ground, approach slabs are laid on the filling soil, and the bear-abutment end of each approach slab is in lap joint with the end of a main beam arranged on the abutment. The structure aims to solve the problem that due to the fact that ordinary concrete piles are high in rigidity and poor in longitudinal-bridge-direction deformability and the tensile strength design value of ordinary concrete is small, concrete cracking can be caused easily under the external influence, or even fracture failure of the section of a pile foundation structure can be caused finally.

The invention discloses an imaging system, a camera module and an electronic device. The imaging system sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis. The imaging system satisfies the following conditional expression: 2 <|f12 / f345| < 10, wherein f12 is a combined effective focal length of the first lens and the second lens, and f345 is a combined effective focal length of the third lens, the fourth lens, and the fifth lens. On the premise of ensuring the miniaturization and thinness of the imaging system, the imaging system has the characteristic of large wide angle.

The invention provides primers and reagent kits for detecting CYP21 gene mutation and an application of the primer and reagent kit. The primers comprise a specific primer for an overall length sequence of a CYP21A2 gene, a specific primer with 30kb deletion and mutation of a CYP21 authenticity gene and a specific primer of recombination / fusion mutation of the CYP21 authenticity gene. The constructed reagent kits and primers are small in quantity, detection of various mutation types of the CYP21 gene can be completed once, the process is simple, the results are high in precision, and the primers and the reagent kits have broad application prospects in the field of diagnosis of congenital adrenal hyperplasia.

The electronic book reading machine consists of casing, liquid crystal display screen, key array, computer interface, battery compartment and circuit board connected together. Its compression method supports blocked compression and partial decompression. The reading machine decompresses the compressed text to the present reading position and displays text in its display screen; and the partial decompression is direct decompression after equal-width cutting. The "blocked compression" of the present invention can utilize the memory space fully and increase the length and the number of the stored text greatly. The "partial decompression" makes it possible to decompress the required content randomly and this raises the responding speed greatly. The electronic reading machine can be operated easily and flexibly.

The invention discloses a parent-child interactive cartoon free creation system and a method. The system comprises a drawing terminal and a server end. The drawing terminal and the server end are connected through a network. The drawing terminal comprises: a Canvas Setting Module, a production module, a preview module, a long map generation module and a terminal storage module, the drawing terminal is used for adding material or doodle on the canvas, and saving the canvas as a story, the server side includes: a material addition module and a server storage module, by adding canvas functionality to increase the length of the cartoon, and preserving the cartoon to form a small story in the form of the long picture, through the character material and the newer festival material, the paintingcontent becomes rich, through the doodling function causes the child to create freely, the rich cartoon creation material is achieved, the cartoon creation length is increased, and child's interest and the imagination goal are enhanced.

The invention provides an extension device for a vehicle lifter platform, capable of increasing the entire length of the vehicle lifter platform by pulling a platform extension moving portion rearward relative to a platform positioning portion. The extension device is so structured that in a platform automatically lifting when driven by a motor or hydraulic pressure, the platform positioning portion and the platform extension moving portion forms the length for normal use, the platform extension moving portion moves of the platform positioning portion towards the platform protruding direction to extend the platform by a desirable length, and the platform positioning portion and the platform extension moving portion are provided with locking mechanisms to lock in a positioning position and an extension moving position.

The invention discloses a growth frame of a scindapsus aureus cultivation device. The growth frame comprises a first supporting column arranged vertically and further comprises an adjusting device and a second supporting column, wherein the adjusting device is arranged on the first supporting column, and the second supporting column is arranged on the adjusting device and located above the first supporting column. According to the growth frame of the scindapsus aureus cultivation device, due to the fact that the second supporting column is additional arranged on the first supporting column, the total length of the supporting columns can be increased, stems of scindapsus aureus can still climb on the supporting columns as growth of the scindapsus aureus, therefore, the scindapsus aureus can be supported continuously, and the scindapsus aureus can still grow upwards; the additionally-arranged second supporting column can be supported through the adjusting device, the second supporting column is stable, the situation that a supporting column is inclined due to an excessively large length is avoided, and it is guaranteed that the scindapsus aureus is supported reliably.

The invention discloses a scindapsus aureus cultivation device which comprises a cultivation container used for planting scindapsus aureus and a vertical first supporting pillar and further comprises an adjusting device arranged on the first supporting pillar and a second supporting pillar arranged on the adjusting device. The first supporting pillar and the second supporting pillar are wrapped with cloth sleeves and are provided with guiding structures for guiding water to the cloth sleeves. According to the scindapsus aureus cultivation device, the second supporting pillar is additionally arranged so that the total length of the supporting pillars can be increased, as the scindapsus aureus grows, the vines of the scindapsus aureus can still climb and be attached to the supporting pillars so that the scindapsus aureus can be continuously supported, and the scindapsus aureus can grow upwards. In addition, the guiding structures are arranged on the first supporting pillar and the second supporting pillar to guide the water to the cloth sleeves, the water can conveniently permeate into the cloth sleeves, the cloth sleeves can fully absorb the water for aerial roots of the vines on the scindapsus aureus to absorb, and therefore adsorption of the vines of the scindapsus aureus can also be firmer.

The invention discloses an adjusting device of a scindapsus aureus cultivation instrument. The scindapsus aureus cultivation instrument comprises a first supporting column, a second supporting column and a first cloth cover. The adjusting device comprises a base and an inner supporting rod, wherein the base is arranged at the upper end of the first supporting column, and the inner supporting rod penetrates through the base and used for pushing the second supporting column upwards. The base is provided with a driving mechanism used for driving the inner supporting rod to move. According to the scindapsus aureus cultivation instrument with the adjusting device, the adjusting device capable of adjusting the height of the second supporting column is additionally arranged, and the adjusting device is used for adjusting the height of the second supporting column, so that the whole length of a growth frame is increased, scindapsus aureus stems still clamber the supporting columns of the growth frame along with the growth of scindapsus aureus, the scindapsus aureus is continuously supported, and the scindapsus aureus still grows up; meanwhile, the additionally-arranged second supporting column can be supported through the adjusting device, so that the second supporting column is stable, the phenomenon that the supporting columns are tilted due to the too large length is avoided, the stability of the growth frame is improved, and it is ensured that the scindapsus aureus is reliably supported.

The invention provides an automatic efficient moisture removal device for a non-woven fabric drying oven. The automatic efficient moisture removal device comprises an air inlet fan, an air outlet fan, a dust removal fan, a driving motor, a dust removal flattening mechanism, an air blowing cylinder, an electric heating plate and an exhaust bottom frame. The air inlet fan is fixedly connected to the outer side of an outer box body through bolts. The air outlet fan is fixedly connected to the right side of the outer box body through bolts. The driving motor is connected to the right side surface of the outer box body through welding. The dust removal flattening mechanism is fixedly connected to the upper surface of the interior of the outer box body, and a pipeline above the dust removal flattening mechanism is fixedly connected to the upper surface of the outer box body. The dust removal fan is fixedly connected to the upper portion of the outer box body through bolts. Therefore, flowing hot air is continuously generated to dry and blow the upper surface of fabric, air near the exhaust bottom frame is extracted under the action of the exhaust bottom frame and the air outlet fan, and the air blowing cylinder and the electric heating plate are matched to suck air from the lower part of the fabric, so that an air penetration effect can be formed on the fabric, and the drying efficiency is improved.

The invention discloses a growth frame of a scindapsus aureus cultivation instrument. The growth frame of the scindapsus aureus cultivation instrument comprises a first supporting column, a first cloth cover, a second supporting column and an adjusting device, wherein the first supporting column is sleeved with the first cloth cover, the second supporting column is vertically arranged and located above the first supporting column, the adjusting device is used for adjusting the height of the second supporting column, and the second supporting column is also sleeved with the first cloth cover. According to the growth frame of the scindapsus aureus cultivation instrument, the second supporting column and the adjusting device capable of adjusting the height of the second supporting column are additionally arranged, and the height of the second supporting column is adjusted through the adjusting device, so that the whole length of the growth frame is increased, scindapsus aureus stems still clamber the supporting columns of the growth frame along with the growth of scindapsus aureus, the scindapsus aureus is continuously supported, and the scindapsus aureus still grows up; meanwhile, the additionally-arranged second supporting column can be supported through the adjusting device, so that the second supporting column is stable, the phenomenon that the supporting columns are tilted due to the too large length is avoided, the stability of the growth frame is improved, and it is ensured that the scindapsus aureus is reliably supported.

The adapter (6) is made of plastic, and is connected to a drive shaft (7) in a force-fit manner for power transmission. A hub (8) is formed, which returns from an end (9) which is averted from a housing (3) of a tubular drive device (1), to a free end (10) of the drive shaft. A side (11) of the hub, which is turned away from the housing, forms an outer side (12) of the adapter.

The invention provides an air conditioning which easily stores a double muffler member in an outdoor unit while further effectively suppressing a refrigerant sound resulted from pulsation of a compressor. This air conditioner is a multi type air conditioner including the compressor 3, the outdoor unit 1 having an outdoor heat exchanger 6 and a four-way valve 5, and a plurality of indoor units 2a-2c connected to the outdoor unit. The outdoor unit 1 includes a plurality of service valves 15a-15c connected with the indoor units 2a-2c, respectively. The double muffler member X formed in a U-turn shape by a first muffler 21, a second muffler 22 and a connecting pipe 23 connecting both the mufflers is provided in an internal refrigerant pipe 24 between these service valves and the four-way valve 5, and the plurality of service valves 15a-15c are connected to one muffler 21 of the double muffler member, respectively.

The invention discloses a seeder land wheel with a speed change function. According to the seeder land wheel with the speed change function, the efficiency of adjusting the seeding plant spacing during seeding in spring is effectively achieved, the use space of a seeder is saved through the combination of a gearbox and a land wheel, and therefore, the effect that the furrow width and furrow distance of the seeder are more flexibly adjusted is achieved. A joint of a land wheel support and a seeding box is concentric with a power input shaft, and the land wheel support and seeding machine angle adjusting device is arranged below, so that the height of the land wheel of the seeding machine can be conveniently adjusted while the length of an input chain of the seeding machine is not influenced. A gear falling prevention device is arranged in the gearbox, so that gear falling can be effectively prevented.