27results about How to "Meet structural strength requirements" patented technology

A switch case disclosed by the present invention comprises a case body mechanism, a modular mechanism and a heat dissipation mechanism, the heat dissipation mechanism is inserted into the case body mechanism, the modular mechanism is inserted into the case body mechanism, and the case body mechanism comprises a machine body unit and a cover plate unit. And the cover plate unit is in threaded connection with the top of the machine body unit. By adopting the modular design, when the network scale is expanded or new functions need to be added, only corresponding modules need to be added, and the whole case does not need to be replaced, so that the extension and upgrade cost is greatly reduced, the extension and upgrade time is greatly shortened, extension and upgrade are easy, and the heat dissipation efficiency is improved by optimizing the design of a heat dissipation system. According to the heat dissipation system, the operation temperature of the switch can be effectively reduced, so that the energy consumption of the heat dissipation fan is reduced, meanwhile, the optimal design of the heat dissipation system also can avoid potential safety hazards caused by overheating, and the side surface is matched with the top heat dissipation design, so that air flow can be formed, and heat can be rapidly extracted.

The invention discloses a rotatable cantilever crane for erecting bridge sections and a method for erecting a steel box girder. The rotatable cantilever crane for bridge segment erection comprises a main framework, a crane carriage, a rotating mechanism and a lifting appliance, the main framework comprises two longitudinal main beams, a front cross beam and a rear cross beam are connected between the two longitudinal main beams, and a middle stand column and a rear stand column are connected to the lower portions of the middles and the lower portions of the rear ends of the longitudinal main beams correspondingly; the lower end of the middle stand column and the lower end of the rear stand column are both fixedly connected with the bottom frame, the bottom frame is movably matched with the walking track, supporting jacks are arranged on the lower portion of the front end and the lower portion of the rear end of the bottom frame, and a first main inclined supporting rod and a second main inclined supporting rod are detachably connected between the longitudinal main beam and the bottom frame. The hoisting trolley is movably arranged between the two longitudinal main beams, the lifting appliances are connected to the lower portion of a winch pulley block of the hoisting trolley through rotating mechanisms, and leveling jacks are arranged on the lifting appliances.

The utility model relates to the technical field of cargo booms, in particular to a cargo boom barrel and a crane, and the cargo boom barrel comprises a first half barrel, a second half barrel and a plug-in structure. Specifically, the first half cylinder body and the second half cylinder body are each of a thin-wall structure, the cross section of the first half cylinder body and the cross section of the second half cylinder body are each of an arch-shaped structure, notches are formed in the first half cylinder body and the second half cylinder body, and the notches of the first half cylinder body and the notches of the second half cylinder body are oppositely arranged and jointly spliced into the cargo boom cylinder body. The opposite insertion structure is arranged at the splicing position of the first half barrel and the second half barrel and suitable for enabling the notch of the first half barrel and the notch of the second half barrel to be oppositely inserted so as to adjust the relative position of the first half barrel and the second half barrel. According to the cargo boom barrel and the crane, the forming size of the cargo boom barrel can be guaranteed through fine adjustment of the size, so that the size of the manufactured cargo boom barrel is kept consistent.

This invention discloses a personalized Gothic arch component for dental implant restoration and a method for determining digital jaw position relationships, belonging to the field of medical device technology. The component includes a mandibular tracing needle fixation bracket, a tracing needle, a maxillary Gothic arch tracing plate, and fixing screws. The mandibular tracing needle fixation bracket comprises a Y-shaped tracing needle positioning frame and a personalized implant fixation bracket. The tracing needle is fitted into the central groove of the mandibular tracing needle fixation bracket via a shaft-hole fitting structure. The maxillary Gothic arch tracing plate is U-shaped and adapts to the maxillary dental arch. Both the mandibular tracing needle fixation bracket and the maxillary Gothic arch tracing plate are provided with screw channels for matching fixing screws. The method for determining digital jaw position relationships includes: taking a digital impression; designing and 3D printing the above components using CAD / CAM; determining the vertical distance and centric relationship using the personalized Gothic arch; and transferring the maxillary-mandibular relationship for edentulous full-mouth implant restoration based on occlusal records and electronic facebow data, thereby improving the clinical applicability of the restoration.

The utility model discloses a lightweight portable sickle, and belongs to the technical field of sickles. Comprising a tool bit and a main rod, the tool bit comprises a blade, a lock catch mechanism and a fixing base, the blade is detachably connected with the lock catch mechanism, the lock catch mechanism is connected with the main rod through the fixing base, the main rod comprises an upper rod body, an angle adjusting mechanism and a lower rod body, and the angle adjusting mechanism comprises an upper connecting part, a bolt, a lower connecting part and a nut. The upper rod body and the lower rod body are connected with the upper connecting part and the lower connecting part respectively, and the upper connecting part and the lower connecting part are connected through a bolt and a nut. The tool bit and the main rod can be detached, portability is better, meanwhile, the main rod can adjust the bending angle through the angle adjusting mechanism, the bending angle of a user can be reduced during working, fatigue of the waist of the user is effectively relieved, and more time and labor are saved during crop harvesting.

The embodiment of the invention provides an automobile transport ship deck structure and a ship. According to the deck structure, a deck in the lower area of a cargo hold is in a continuous sheet deck form; a deck in the upper area of the cargo hold adopts a steel framework steel plate deck form; and the structural strength of the hull meets the design requirement. According to the embodiment of the invention, the number of continuous decks at the upper part is reduced, the continuous decks are changed into a frame structure, small thin plates are laid on the frame, and the structure is reinforced, so that on the premise that the structural strength requirement of the ship body is met, the thin plates are prevented from being damaged in the processes of cutting, blanking, assembling, welding, placing, transferring, turning over, hoisting and the like; and a large amount of inevitable repairing work caused by deformation is avoided, so that the construction cost is reduced, the construction time is shortened, and the safety and economical efficiency of the ship structure are improved.

The utility model belongs to new energy technology field, especially point to a kind of flexible photovoltaic carport, including the main stand and main support beam of transverse interval arrangement, several steel strands are arranged on two main support beams, and the both ends of steel strand are anchored in tension with main support beam, several longitudinal oblique drainage channels are arranged on the steel strand between two main support beams, longitudinal oblique drainage channel is connected with steel strand by first connecting piece, and photovoltaic panel assembly is spliced and is laid flat on the top of the canopy formed by main support beam and steel strand by second connecting piece installed on longitudinal oblique drainage channel;The utility model forms canopy bearing structure by the steel strand of transverse arrangement and main support beam, need not set up transverse purlin, reduce material cost and assembly complexity.

The application provides a bearing bracket suitable for normal placement of a thin plate segment and a design method thereof. The design method designs two types of general brackets corresponding to the structure interval according to the structure size of the thin plate segment and the total segment. The two types of brackets are calculated and analyzed by using a finite element calculation method, and the brackets meet the structural strength requirement. The finite element calculation and analysis of the normal placement scheme of the selected typical thin plate segment meet the accuracy construction requirement of the deformation of the segment and the bracket. The bracket structure is simple and reusable, has strong universality, can be suitable for the normal placement scheme of thin plate segments of various sizes, effectively controls the structural deformation of the thin plate segment, and provides favorable conditions for ship production and manufacturing transportation.

The utility model provides a roadbed structure suitable for being used above a soft soil stratum subway tunnel, which comprises a box type foundation with the lower part positioned below a ground line, a medium-coarse sand layer arranged on the box type foundation, an EPS (Expandable Polystyrene) layer arranged above the medium-coarse sand layer, a metal pin embedded in the upper part of the box type foundation, an upper end of the metal pin being inserted into the EPS layer through the medium-coarse sand layer, a lower end of the metal pin being inserted into the EPS layer through the medium-coarse sand layer, and a lower end of the metal pin being inserted into the EPS layer through the medium-coarse sand layer. A retaining wall is arranged around the medium-coarse sand layer and the EPS layer, a pavement structure is laid on the EPS layer, and the side face of the pavement structure is fixedly connected with the retaining wall in an adjacent mode, the roadbed structure suitable for the upper portion of the soft soil stratum subway tunnel is provided, the requirement for the roadbed structure strength is met, meanwhile, the additional load above the subway tunnel is greatly reduced, and the construction cost is reduced. The problem of excessive settlement deformation of the subway tunnel is avoided, and the safety of the subway tunnel is ensured.

The utility model relates to the technical field of operation machinery, and discloses a mounting device and operation machinery, the mounting device comprises a main body, the main body comprises a connecting part and a mounting part, the connecting part is fixedly connected with the mounting part, the connecting part is provided with a connecting structure matched with a vehicle body of a cleaning vehicle, and the mounting part is provided with a mounting structure for mounting a water spraying frame; according to the utility model, the main body and the supporting assembly form the integral mounting device together, the main body is provided with a structure connected with the vehicle body and the water spraying frame at the same time, the water spraying frame can be directly mounted only by a single mounting device, the integral main body is better in integrity, and the water spraying frame is more convenient to mount. The number of components is reduced, redundant reinforcing structures at the connecting positions of the components can be omitted, the strength of the main body is further improved through the supporting assemblies, and the water spraying frame can be reliably supported while the overall structure of the mounting device is simple.

The utility model provides a battery pack box body and a battery pack, the battery pack box body comprises a plurality of side coamings which are sequentially connected end to end to form a frame body; the two ends of the beam are connected with the two oppositely-arranged side surrounding plates respectively, and the interior of the frame body is divided into at least two containing areas for storing the battery modules by the beam; the reinforcing piece is connected to the beam and the side coaming, the reinforcing piece is provided with a buffer slope, and the buffer slope inclines in the direction from the side coaming to the beam; large cylindrical battery cells with large volume and large capacity can be placed in the battery pack box body, the requirements of partial vehicle types on the capacity of a battery system and the structural strength of the battery pack can be met, and the buffer slope of the reinforcing piece can buffer collision; therefore, the battery pack box body frame can bear side collision and front collision of the vehicle in the running process.

The present invention provides an optimization method and device for a minimum risk bomb location structure, including: in response to existing airworthiness clauses, a minimum risk bomb location structure is proposed as an airborne explosion-proof container, one end of the container is closed, and the other end is sealed by connecting a pressure relief cover and the container through a shear pin. When the mass of the explosive is small, the shear pin gives the container a certain containment capacity; when the mass of the explosive is large, the shear pin is sheared off, and the pressure relief cover flies out of the container to achieve directional pressure relief of the container. The present invention mainly performs finite element analysis on the proposed minimum risk bomb location structure, establishes a function proxy model, and optimizes the shape and size to finally obtain an optimized structural form; this method becomes an equal strength structure under the condition that the minimum risk bomb location structure meets the design requirements, and realizes the lightweight structure, reduces the operating costs of airlines, and improves its engineering application value.

The utility model discloses a kind of connection structure of centrifugal fan volute and motor, including volute, volute side fixed connection damping component, the side of damping component away from volute is equipped with suction component, part structure of the suction component is inserted into volute and penetrates damping component, one is directly blocked vibration energy along the path of linear penetration rubber layer, avoid energy direct transmission;Two are forced vibration wave at the interface of staggered sheet and rubber repeatedly occurs reflection and scattering, significantly improve the dissipation efficiency of vibration energy, to further weaken vibration transmission intensity.

The utility model provides a door assembly and a steaming oven, and belongs to the technical field of household appliances. The door assembly comprises a door outer plate, a handle assembly, a door inner mounting frame assembly and a door inner plate, the handle assembly comprises a door handle arranged outside the door outer plate, a mounting plate arranged in the door outer plate and at least one first screw, and one end of the first screw penetrates through the mounting plate and the door outer plate to be connected with the door handle; the in-door installation frame assembly comprises an installation base, an upper limiting support and a lower limiting support, the installation base is bonded to the inner wall of the outer door plate, screws are not needed, the attractiveness of the door assembly is improved, and the upper limiting support and the lower limiting support are installed at the upper end and the lower end of the installation base respectively; a door inner plate is installed on the door inner installation frame assembly, the installation base, the upper limiting support and the lower limiting support jointly clamp the door inner plate, and the first screw is located in a cavity formed by the installation base, the upper limiting support, the lower limiting support and the door inner plate.

A cargo construction hoist comprises a lifting cage and a transmission mechanism arranged on the rear side of the lifting cage, the lifting cage is rectangular, and the transmission mechanism is eccentrically arranged in the direction close to the left side of the lifting cage. The suspension cage comprises a suspension cage main body, a connecting frame arranged on the left side of the suspension cage main body, a door frame connected with the connecting frame, a flap gate arranged on the door frame and a movable door arranged on the right side of the suspension cage main body; a supporting mechanism is arranged at the bottom of the suspension cage body and comprises a body frame which is arranged on a bottom frame of the suspension cage body and corresponds to the position of the transmission mechanism, and a first cable-stayed supporting rod is arranged between the body frame and a left cross beam of the bottom frame of the suspension cage body. And a second cable-stayed supporting rod is arranged between the main body frame and a right cross beam of the bottom frame of the cage main body. The lifting cage is high in structural strength and can be matched with a novel building machine for use.

The present invention is a reinforced structure of a portable power station, comprising a housing, and an electric energy generating device contained in the housing, wherein the bottom of the housing is formed by a base, a bottom supporting foot platform is provided at the bottom of the base, a bracket is provided inside the housing, and the electric energy generating device is connected to the base and / or the bottom supporting foot platform through the bracket. The present invention greatly increases the structural strength of a power station having a plastic housing with less metal material by providing a metal bracket connected to the outer foot platform and handle of the housing inside the housing, and has the advantages of light weight, high strength and low cost.

The invention discloses a portable composite material foldable space mechanism and a folding and unfolding method thereof. The portable composite material foldable space mechanism comprises end modules (1), thin-wall supporting side columns (2) and connecting modules (3). And the upper and lower end supporting cylinders in the end modules are connected with hard steel plates to enhance the transverse stability of the structure. One end of each thin-wall supporting side column is in concentric shaft connection and tight sleeving with a lower-end supporting cylinder in the corresponding end module, and the other end of each thin-wall supporting side column is in concentric shaft connection and tight sleeving with an upper-end supporting cylinder in the corresponding end frame. The connecting module sets the climbing height according to the optimal climbing step length of the human body, one end of the connecting module is fixed through a lower end connecting port in the connecting end module, and the other end of the connecting module is fixed through an upper end connecting port in the connecting end module. According to the device, the thin-wall bistable composite material structure is adopted as a supporting side column of the structure, the number of parts of a folding mechanism is remarkably reduced, the device has the advantages of being light, high in strength, simple in structural form, capable of being repeatedly assembled and disassembled, convenient to carry and the like, and the portable storage and application requirements of complex scenes can be met.

The invention relates to an artificial island reef thin-wall cylinder sheet radian control technology which comprises the steps that firstly, a bottom jig frame is arranged, embedded iron is arranged on a construction site in advance according to grids, a set of longitudinal jig frames are arranged in the length direction of the grids at certain intervals, and each set of longitudinal jig frames comprises a plurality of sets of transverse jig frames; a group of transverse jig frames are arranged in the width direction of the grids at certain intervals; in the second stage, arc-shaped plates are arranged, lofting and blanking are carried out according to the theoretical diameter of the barrel, notches are evenly formed in the arc-shaped plates, all the arc-shaped plates are welded to the vertical angle steel of the corresponding transverse jig frame, and an arc jig frame is formed; a third stage, bending the pressed sheet; the arc jig frame used in the method is only made of angle steel and steel plates, the number of types of materials is small, the material cost is low, installation is convenient, independence and flexibility are high, real-time transformation is convenient, adaptability is high, and the forming radian control precision of the cylinder sheet is improved.

The invention discloses a heat preservation filling material and a steel shell anti-corrosion heat preservation pipe, and belongs to the technical field of heat insulation materials, the heat preservation filling material comprises a main material, an auxiliary material and an additive, the main material comprises the following raw materials: expanded perlite, mica powder, multi-coated glass beads, expanded vermiculite silica fume and high-temperature-resistant chopped glass fibers; the auxiliary materials comprise the following raw materials: phenolic resin, aluminum silicate fiber, glass fiber, sulphoaluminate cement and slag powder; the additive is prepared from the following raw materials: redispersible latex powder, hydroxypropyl methyl cellulose ether, polypropylene fiber, a water reducing agent, aluminum hydroxide, melamine cyanurate and expanded graphite. The problems that an existing thermal insulation filling material is high in heat conductivity coefficient, insufficient in compressive strength and poor in flame retardant property are solved. The system has the advantages of comprehensive performance, safety and reliability.

The cooking utensil comprises a pot body, the pot body comprises an outer cover shell, a middle ring arranged at the top of the outer cover shell and a metal decorating part arranged above the middle ring, and the metal decorating part comprises a decorating piece and a folded edge formed by bending downwards along the outer periphery of the decorating piece; a bending interval is formed between the folding edge and the outer periphery of the decorative sheet, an anti-folding-mark gap is formed between the end part of the folding edge and the lower surface of the decorative sheet, and the interval of the anti-folding-mark gap is not greater than the bending interval. The relative folding part of the folding edge and the decorative sheet moves downwards for a certain distance relative to the decorative sheet, and the anti-folding-mark gap is arranged between the folding edge and the lower surface of the decorative sheet, so that the stress at the outer periphery of the decorative sheet can be greatly reduced, the folding mark at the outer periphery of the decorative sheet is reduced or even eliminated, and the appearance quality of the metal decorative part is improved.

The utility model provides a side wall assembly and an automobile, and the side wall assembly comprises a side wall front part, an A column part, a B column part, a C column part, a side wall rear part and a doorsill part which are integrally formed; the A column part is provided with an A column groove type structure; the A column part is further provided with A column reinforcing ribs, and the A column reinforcing ribs are integrally formed in the A column groove-shaped structure. The doorsill part is in a continuous wave-shaped bent shape and forms a columnar doorsill. The column part B is of a plate-shaped structure; the B column part is provided with B column reinforcing ribs, and the B column reinforcing ribs are integrally arranged on the two sides of the B column part in the width direction of the automobile body. According to the scheme, all the parts of the side wall assembly are integrally formed, the A column part, the B column part and the doorsill part are in different integrally-formed forms, and the integrally-formed reinforcing rib structure is matched, so that all the parts of the side wall assembly can meet the structural strength requirement, meanwhile, the side wall assembly is integrally formed and produced, and the production efficiency is improved. The problems that in the prior art, a side wall assembly is long in technological process and large in part number are solved.

The present application discloses a multi-point crack monitoring device for geostress testing by hydraulic fracturing, comprising an upper packer, a fracturing section, and a lower packer coaxially connected in sequence, a camera module with an outer diameter larger than that of the fracturing section being fixed at both ends of the fracturing section, at least three cameras being coaxially arranged on one side of the camera module facing the water outlet in the middle of the fracturing section, a fill light being arranged between the cameras, and a storage unit connected to the control unit signal and a built-in power supply unit being arranged in the camera module. The present application sets up camera modules with multiple cameras and fill lights at both ends of the fracturing section, which can intuitively record the process, direction, and position of rock wall cracks throughout the entire process without blind spots, avoiding the tedious alternating operation of fracturing and impression in impression testing, realizing the synchronization of fracturing test and crack observation, not only significantly improving the efficiency of crack detection, but also improving the accuracy of crack location, with the characteristics of reliable structure, simple operation, and high test efficiency.

This utility model discloses a composite material rod-tube, including an alloy component in the shape of a cylinder with an axially penetrating hollow cylindrical cavity. An iron rod is coaxially disposed within the cylindrical cavity, and a circular boss is formed at each end of the iron rod. An annular welding space is formed between the outer peripheral wall of each circular boss and the corresponding end face of the alloy component. The annular welding space is used to accommodate solder to achieve a fixed connection between the alloy component and the iron rod. By coaxially embedding the iron rod within the alloy component, the two work together to form an annular welding space, providing a carrier for the solder. During brazing, the molten solder fully wets the annular welding space under capillary action. After the solder cools, it forms a positioning and connection strengthening structure, rigidly connecting the alloy component and the iron rod. This effectively avoids the interlayer slippage problem that occurs when the aluminum alloy-clad iron rod is subjected to long-term high-frequency reciprocating motion, meeting the structural strength requirements of printer / copier components under high-frequency motion scenarios.

The invention discloses a temperature cycle-seepage shear rheological test shear box for simulating samples of multiple sizes and different shapes, and relates to the technical field of shear boxes, the shear box comprises a top shear box and a bottom shear box; an area which is encircled by the top shear box opening and the bottom shear box opening and is communicated with the front side and the rear side is a working area; the device further comprises a temperature circulation-seepage device and a multi-size test piece group; the temperature circulating device and the seepage device are adjacent to the working area, and the outer surfaces of the multi-size test piece group and the test sample in the working area are fully surrounded by the top shear box, the bottom shear box, the temperature circulating device and the seepage device. According to the invention, different shear rheological characteristics represented by rock-soil samples with various standard sizes are comprehensively considered, so that the application modes of temperature circulation-seepage action on the rock-soil body and stress action on the rock-soil body are synchronized, and the temperature circulation-seepage-stress shear rheological test of the samples with various sizes and different shapes can be rapidly realized without disassembly. The device is simple in structure and easy to operate, avoids the risk of scalding, frostbite or high-pressure water cutting injury to an operator due to instrument disassembly, and also provides a basis for promoting standardization of a rock shear rheological test.

The utility model relates to an air conditioner outdoor unit belongs to air conditioning technical field, and the air conditioner outdoor unit includes the casing, heat exchanger, compressor and fan, the fan, compressor are arranged in the casing inside, and the fan is located at the leeward side of heat exchanger, and the air outlet side of fan is set to the air outlet, and the fan includes motor and fan, and the fan includes mounting disc, blade, first reinforcing part and second reinforcing part, wherein, the motor output shaft is connected at the axle center of mounting disc, and the blade is set on the outer circumferential wall of mounting disc, the first reinforcing part is set to the side of mounting disc towards the motor, and the second reinforcing part is set to the side of mounting disc away from the first reinforcing part, the first reinforcing part and second reinforcing part all are provided with a plurality, and the first reinforcing part and second reinforcing part are set in the circumferential direction of mounting disc and are staggered, in the application, through setting first reinforcing part and second reinforcing part, the improvement of mounting disc structure strength is realized to the strength requirement of axial flow fan.

The application discloses a synchronous motor stator structure which comprises an inner shell, an outer shell, end covers, a stator, windings, a gas conveying device and connecting pieces. The inner shell is basically a hollow cylinder, and the outer shell is arranged around the inner shell. Two end covers are arranged, and the two end covers are respectively connected to two ends of the inner shell along the axial direction of the inner shell and are respectively connected to two ends of the outer shell along the axial direction of the inner shell. The two end covers, the inner shell and the outer shell form a containing space. The stator is installed in the containing space and is connected to the inner shell, and the stator forms winding slots. The windings are installed in the winding slots. The gas conveying device is communicated with the containing space to convey insulating gas into the containing space, so that the windings are prevented from corona. The connecting pieces are clamped with the slot openings of the winding slots to close the winding slots, so that the positions of the windings are fixed; and the connecting pieces are also clamped with the inner shell, so that the acting force on the inner shell can be transmitted to the stator. Through the above arrangement, the air corona of the windings can be avoided, and the structural strength requirement of the synchronous motor stator structure can be met.

The utility model provides a heat pipe heat exchanger which comprises a collecting chamber, a flat pipe set and a partition plate, the collecting chamber comprises an upper collecting chamber and a lower collecting chamber which are arranged in parallel up and down, the flat pipe set comprises a plurality of flat pipes arranged between the upper collecting chamber and the lower collecting chamber at intervals, and the upper collecting chamber and the lower collecting chamber are communicated through the flat pipes; the partition plate is arranged between the upper flow collecting chamber and the lower flow collecting chamber and divides the heat exchanger into a condensation part and an evaporation part. The partition plates comprise the first partition plate and the second partition plate which are vertically overlapped, one side of the first partition plate is arranged in a comb tooth shape, the first partition plate comprises a plurality of notches which are arranged at intervals and used for containing the flat pipes, the opening directions of the first partition plate notches and the second partition plate notches are opposite, and the first partition plate notches and the second partition plate notches are vertically overlapped to form a sealing opening which is closed in the circumferential direction and used for allowing the flat pipes to pass through. The first partition plate and the second partition plate are overlapped to isolate the condensation portion and the evaporation portion of the heat exchanger, water cannot leak into the evaporation portion through the partition plates after brazing, and the waterproof requirement under the using situation is met.