60results about How to "Shorten design length" patented technology

The present invention relates to one kind of electrically driven stairs climbing handcart and its deformation wheel. The electrically driven stairs climbing handcart has a frame, a chair, wheels, a crawler belt mechanism, an electric control box, an elevation controlling mechanism, a cross shaft lever; a leveling shaft connected to two telescopic rods; two shifting forks fixed separately to ends of the leveling shaft; tension springs in the bottom of the frame for connecting the crawler belt mechanism; and a tipping preventing control mechanism connected to the electric control box. The deformation wheel for the stairs climbing handcart has a wheel dish, a coaxial cam, spokes and springs connected to the wheel dish, a wheel rim and an elastic tire.

The invention discloses a combined pile foundation structure suitable for coral reef geology. The combined pile foundation structure comprises a pre-stress pipe pile and a steel tube upright column, the lower end of the pre-stress pipe pile is inserted into the rock-soil, and a cast-in-place pile is arranged in the lower section of the pre-stress pipe pile; the steel tube upright column is locatedon the upper side of the pre-stress pipe pile, the steel tube upright column sleeves the outer side of the pre-stress pipe pile, an annular hollow grouting space is formed a certain distance away from the steel tube upright column, the pre-stress pipe pile and the steel tube upright column are partly overlapped and sleeved with each other, and the overlapped part in the hollow grouting space is filled with a grouting material; and the upper portion of the steel tube upright column is exposed out of the rock-soil and is used for being connected with an external structure. According to a combined pile foundation, the circumferential friction resistance of the cast-in-place pile and the high strength of the pre-stressed pipe pile are fully used so that the weight of the pile foundation can be greatly reduced, and the design length of a pile body can be reduced. The structure is particularly suitable for foundation construction under coral reef geological conditions, can meet requirementsof the severe marine environment, can be assembled and quickly constructed, is environmentally friendly and efficient, and has good economic benefits.

The invention relates to a reinforced core-enveloped structural slope protector, which mainly comprises a unidirectional geotechnological grid, fillings, an anti-aging plant-growing geotextile bag and connecting pieces. The slope protector is made from the fillings reinforced with the unidirectional geotechnological grid. The structural slope protector can obtain the raw materials from local resources and can be constructed with the earth material on the construction site, thus significantly saving energy; the reinforced materials of the structural slope protector has good durability; the structural slope protector also has the advantages of convenient construction, lower construction cost and the like.

The embodiment of the invention discloses a decorative ring, an input assembly and a terminal. The decorative ring comprises a decorative ring and a flange stretching outwards from the outer wall of the decorative ring. A notch is formed in the flange. By means of the decorative ring, the design length of the intelligent terminal can be reduced.

The present invention discloses a 03 type rifle automat, comprising a piston sleeve, a piston rod, a piston spring, a gunlock frame, a gunlock and a return spring, wherein the piston sleeve is connected to an extract opening above a gun barrel; the piston rod is disposed in the piston sleeve; the piston spring is disposed on the piston rod between a piston disc at a front end of the piston rod and a spring seat disposed on the gun barrel; the return spring of the piston rod is disposed in a spring hole of the gunlock frame; the other end of the return spring is disposed on a spring seat at aninner wall of a rifle cartridge receiver; a step through hole is disposed at the bottom centre of the spring hole of the gunlock frame; an extension rod connected to a pushing face of the piston rod passes through the through hole; and a tail end of the extension rod is provided with a limit weight for limiting the recoil stroke of the gunlock frame. A locking lug radially projected at the front end of the gunlock is switched and paired with a locking tooth at the tail end of the gun barrel. The automat uses a recoil force of a piston assembly to neutralize the redundant recoil after a gunlock assembly is recoiled in place, and the recoil stroke is compressed. Under a condition that the gun length is determined, the length of the cartridge receiver can be shortened, so that the gunlock iscompact and the weight is reduced; or the length of the gun barrel is increased, so that the initial speed of bullets is increased; a gun body is stable during shoot, and the shooting average of a running fire is improved.

A catalytically operating burner with a catalyzer structure (4), useful in particular for a gas turbine system, has a heat-resistant carrier material (10) that forms the walls of several adjoining channels (13). The channels (13) pervade the catalyzer structure (4) in longitudinal direction and permit that a gaseous reaction mixture flows through the catalyzer structure (4). The walls are coated at least in part with a catalyst. In order to improve the catalytic conversion within the catalyzer structure (4), communicating openings (14) are constructed in the walls between an inlet end and an outlet end of the catalyzer structure (4). Adjoining channels (13) are able to communicate with each other through the communicating openings (14).

The invention provides a transition structure for preventing and treating bump at bridge-head and a construction method thereof. The structure of the transition structure for preventing and treating the bump at the bridge-head comprises a beam body; bridge abutments are fixedly mounted at the two ends of the beam body; one ends of towing plates are fixedly mounted at the middle parts of the bridgeabutments; the other ends of towing plates are buried in a subgrade; the parts behind the bridge abutments and the upper parts of the towing plates are filled with backfilled earth; combined approachslab members are laid on the upper surface of the backfilled earth; and one ends of the combined approach slab members are fixedly mounted on the external sides of the upper ends of the bridge abutments. The construction method comprises the steps of erecting the bridge abutments molded with brackets, constructing the towing plates on the brackets to form two layers of backfill structures, and arranging the combined approach slab members to improve a bearing structure; and therefore, road surface roughness and breakage at the bridge head connecting part caused by uneven settlement of the backfilled earth in the using process are reduced to realize an effect of preventing and treating the bump at the bridge-head; and meanwhile, through the structure combination, energy saving and environmentally friendly properties are realized, the construction period is shortened, template members are saved, and accuracy and quality are very well guaranteed.

The invention discloses a horizontal stabilizer bar assembly with quick and adjustable roll stiffness of an FSAE racing car and an adjusting method thereof. The horizontal stabilizer bar assembly withthe quick and adjustable roll stiffness of the FSAE racing car comprises a torsion bar spring, end heads, adjusting arms, pull rods, bushes, lifting lugs and lifting lug seats. The end heads are welded at the two ends of the torsion bar spring and connected with the pull rods through adjusting arms, the adjusting arms are provided with adjusting holes in a machining mode, and the torsion bar spring is arranged in lifting lug holes through the bushes, and the lifting lugs and the lifting lug seats are arranged by using saw teeth with the same parameters on the two bottom surfaces and clampinga pair of bolt nuts. The lifting lug seats are provided with guide slots in a machining mode, and the lengths of the guide slots are no less than the center distance of the farthest two adjusting holes on the adjusting arms. The horizontal stabilizer bar assembly with the quick and adjustable roll stiffness of the FSAE racing car and the adjusting method thereof can realize big and small step lengths adjusting method. The horizontal stabilizer bar assembly with the quick and adjustable roll stiffness of the FSAE racing car and the adjusting method thereof greatly solve the problem that an common horizontal stabilizer bar adjusting structure is heavy, tools needed to be used during adjusting is more, parts to be assembled are more, the use ratio of adjusting slots is low, and both sides ofthe lifting lug holes are not prone to ensuring coaxial.

The invention discloses a vacuum arc extinguish chamber with composite shielding structures. The vacuum arc extinguish chamber is high in external insulation characteristic, capable of facilitating heat dissipation, low in epoxy resin dosage, economical and environment-friendly. The vacuum arc extinguish chamber comprises a vacuum arc extinguish chamber body and the composite shielding structures, wherein the vacuum arc extinguish chamber body comprises a ceramic shell with openings in the upper and lower ends, cover plates which are arranged at the upper and lower ends of the ceramic shell through metal sealing-connecting surfaces respectively, a static contact which passes through the cover plate at one end and is fixedly arranged in a sealing manner, and a movable contact which passes through the cover plate at the other end and is glidingly arranged in a sealing manner; each composite shielding structure comprises a metal shielding cover and an epoxy resin dielectric which are formed by pouring in a whole body; the metal shielding cover is arranged in a disc-shaped manner, and the outer edge extends towards one end in an axial direction; the epoxy resin dielectric coats all outer edges and extends to one part of the disc-shaped bottom; the composite shielding structures are coaxially arranged outside the cover plates at the upper and lower ends of the ceramic shell; the outer edge ends of the two composite shielding structures are arranged oppositely; and the outer edge end part of the metal shielding cover in each composite shielding structure is arranged in a manner of exceeding the metal sealing-connecting surface on the corresponding side.

The invention discloses a tunnel construction device and concretely relates to a self-propelled tunnel ultra-long inverted arch movable template steel box girder trestle comprising a front approach bridge, a back approach bridge and a main bridge and further comprising a walking device arranged under the main bridge and moving the trestle and a supporting device bearing trestle work weight. The walking device comprises a walking driving device arranged in front of the main bridge and a walking driven device arranged behind the main axle; the supporting device is arranged on the front and back ends of the main bridge; and the walking device and the supporting device are directly mounted on the main bridge. A problem of poor walking efficiency due to repeated operations to a bottom rack and track movements and repeated operation to the main bridge is overcome and a problem of trestle cocking and overturning upon great spanning of the front approach bridge can be solved; the self-propelled tunnel ultra-long inverted arch movable template steel box girder trestle has great walking efficiency, great spanning and cannot cock and overturn.

The invention relates to the field of in-vitro diagnosis, and more specifically relates to a universal probe for simultaneously detecting multiple sites of a genome, and a primer design method and anapplication kit thereof. The universal probe adopts a short tandem repeat sequence as a skeleton sequence, and solves the problems that the number of the probes in a reaction system in which the copynumber concentration is amplified is too large, and non-specific amplification is easily formed and the synthesis cost is high, and the concentration of the chromosome copy number can be proportionally amplified by designing multiple pairs of the primers on both sides of the universal probe position of the single copy gene fragment of the chromosome to-be-tested, which is especially suitable for the detection of certain very low concentration samples (such as whether the non-invasive detection of chromosome copy number generates variation or not).

The invention discloses a method for automatically constructing a prestressed pile. The method comprises the following steps that S1, equipment enters a site; S2, a prestressed pile body is sunken, and after the sunken end of the prestressed pipe pile is blocked, the prestressed pipe pile is sunken to a pile hole position design elevation supporting layer; S3, a tamping position is calibrated, a rammer is put down to the bottom of the prestressed pipe pile, and the tamping position is calibrated; S4, automatic filling and tamping are conducted, a set amount of filler is conveyed to the hollow part of the prestressed pipe pile, hammering is conducted, and the sinking amount is detected; the sinking amount numerical value interval is judged, and the filling action and the tamping action are controlled; S5, the three-time tamping penetration degree is detected; S6, tamping judgment is conducted; and S7, inner pile forming is conducted, a reinforcement cage is put down in the hollow part of the prestressed pipe pile, and concrete is poured. The method has the effects that the bearing capacity is high, the design length of the prestressed pipe pile is controllable, the construction efficiency is high, and the construction cost is low.

A fluid flow guide element (1) constructed, for example, as a diffuser having an inlet opening (2) and an outlet opening (3) whose respective cross-sectional areas differ from one another. Corresponding to the exterior view shown in FIG. 1, the inside wall surface (4) of the fluid flow guide element (1) is provided with spirally arranged recesses (5) and elevations (6) having an inclination (7) relative to a longitudinal axis (8) of the guide element (1). The recesses (5) and/or elevations (6) have a width that increases or decreases steadily between the inlet opening (2) and the outlet opening (3). This facilitates efficient operation of a fluid flow guide element (1) which simultaneously has both a large opening angle and a reduced design length by achieving a more uniform flow or flow profile due to the spiral arrangement of the recesses (5) and elevations (6).

An efficient combination type lifting device relates to a lifting device of a rotary drum type drying machine which is used for the industrial fields of metallurgy, chemical engineering and the like. The efficient combination type lifting device comprises a drum body and multiple levels of combination lifting plates which are sequentially arranged on the inner wall of the drum body along the feeding direction of materials in the drum body, each level of the combination lifting plates comprises a plurality of arrays of lifting plates which are circularly arrayed on the peripheral inner wall of the drum body, the two adjacent arrays of lifting plates are staggered with each other along the radial direction, and the bending degree of the lifting plates in the next level of the combination lifting plates is increased compared with the previous level. Multiple levels of combination lifting plates are arranged in the drum body of the drying machine, a lifting plate mode is added, so that the materials with different properties on different parts of the drum body can reasonably exchange heat, and the heat exchange efficiency is increased; and moreover, the lifting device has the characteristics of difficulty in adhering materials, large drying water, small energy consumption and the like, and can be widely applied to the rotary drum type drying machine equipment in the industrial fields of metallurgy, chemical engineering, non ferrous, ceramsite, power plants and the like.

The present invention discloses a novel waveguide attenuator, and is characterized in that: the novel waveguide attenuator includes three mutually parallel rectangular waveguides, and broadsides of adjacent waveguides are coupled through a plurality of coupling holes; the waveguide attenuator has an output port which is one end of the rectangular waveguide on the outside and has an input port which is one end of the rectangular waveguide in the middle; and other ends of the three rectangular waveguides are provided with absorption loads. The model structure of the novel waveguide attenuator provided by the invention employs the connection of three intercoupling rectangular waveguides and enables the response curve of the structure to be in complementary response to a Bi-chebyshev method, thereby fundamentally solving the problem of flatness of the ultra wide band waveguide attenuator, doubling the capacity of power, having a better echo performance, and decreasing the design length of the waveguide attenuator.

The present invention relates to a feeding and discharging device for graphite high-temperature purification furnace. The device includes a heating furnace body (1), a feed bin (5) and a discharge bin(6). The heating furnace body (1) comprises a furnace tube (2), an induction coil (3) and a shell (4). The induction coil (3) is wound along the outer wall of the furnace tube (2). One side, withoutthe induction coil(3), in the furnace tube (2) is provided with a graphite boat (9), and one side of the graphite boat (9) is connected with a push rod (10) which is connected with an external mechanical pushing device. The upper side of one side of the furnace tube (2) is connected with the feed bin (5) and the lower side is connected with the discharge bin (6). The bottom of the feed bin (5) isprovided with a feeding valve (7) and the top of the discharge bin (6) is provided with a discharging valve (8). The advantages of the feeding and discharging device for the graphite high-temperaturepurification furnace comprise thatfeeding and discharging are integrated, the design length of the high-temperature purification furnace is shortened, cooling of the graphite boat is avoided, the production efficiency is improved and the energy consumption is greatly reduced.

The invention belongs to the technical field of rover driving, and particularly relates to a driving assisting device for a rover. A technical scheme of the rope assisting device suitable for departure of the rover is characterized in that an anchor point is arranged on a landing platform; one end of a rope winds round the rover, and the other end is fixed on the anchor point; after the rover departs from the landing platform ramp, the rope is stopped from winding round the rover. Slippage of the rover is constrained by the added rope on the basis of the original rover, landing platform and ramp. When the rover departs from the landing platform, wheels rotate forward, and the rope is released. When the rover goes down the relatively steep ramp, the rope can have an effect on dragging the rover, and the rover is prevented from slipping down the ramp. The ramp going down capacity of the rover is effectively improved, design length of the ramp is reduced, and the system mass is reduced; compared with the traditional departure mode, the device has the characteristics of simple structure, light system mass, high safety and the like.