22results about How to "Large adjustment space" patented technology

The present invention provides a ramp self-balancing device and a multi-posture wheelchair, comprising a bearing assembly and a posture adjustment assembly. The posture adjustment assembly comprises a first posture adjustment assembly and a second posture adjustment assembly; the first posture adjustment assembly is slidably connected to the first connection end of the bearing assembly, and is rotationally connected to the second connection end of the bearing assembly, and the adjustment direction of the first posture adjustment assembly is parallel to the length direction of the bearing assembly, so that when the first posture adjustment assembly is in a working state, the bearing assembly can rotate with the second connection end as the axis; the second posture adjustment assembly is supported by the first connection end of the bearing assembly through the first posture adjustment assembly, the second posture adjustment assembly is rotationally connected to the second connection end of the bearing assembly, and the adjustment direction of the second posture adjustment assembly intersects with the length direction of the bearing assembly, so that when the second posture adjustment assembly is in a working state, the bearing assembly can rotate with the first connection end as the axis.

The invention relates to the technical field of zirconium alloy material preparation, in particular to a preparation method of a nuclear-grade zirconium or zirconium alloy cast ingot containing scrap-like residues. The method comprises the following steps: 1) identifying, classifying and collecting zirconium or zirconium alloy scrap-like residues; (2) size and surface treatment is conducted on the scraps; (3) sampling and detecting the treated scraps; (4) the total feeding amount and the scrap adding proportion are determined, the alloy element adding amount is calculated, and the qualified scrap is evenly mixed with sponge zirconium according to the proportion; 5) pressing the mixed scraps, zirconium sponge and alloy addition raw materials into electrode blocks, and welding a plurality of electrode blocks to obtain a consumable electrode for smelting; according to the method, the residual material recovery process and flow are simplified, the labor intensity and the cost are reduced, the high-quality nuclear grade cast ingot meeting the requirement is prepared, and the residual material recovery efficiency is improved.

The application discloses a kind of cooling wind intelligent regulation and control and waste heat recovery system of scale hopper dry deslagging machine, and it relates to cooling intelligent regulation and control technical field.The cooling wind intelligent regulation and control and waste heat recovery system of scale hopper dry deslagging machine includes: data acquisition unit is responsible for gathering unit operation data set and dry deslagging machine measurement data set and current bottom slag share, virtual slag amount calculation unit relies on operating parameter to calculate virtual slag amount, slag temperature inversion unit is reversed with heat transfer model slag temperature and accounts for slag carrying heat, optimization control unit is fed back with slag carrying heat and virtual slag amount, obtains optimization control instruction under multiple constraints, safety control unit generates virtual temperature rise rate and completes layered protection determination, the present application is preferably guaranteed safety control by instruction coordination unit, maximizes dry slag waste heat recovery in safety boundary, and make cooling wind regulation and control in dynamic change operating environment continuously fit actual heat transfer demand.

The present application relates to ceramic matrix composite forming die, tooling and method, specifically relates to large complex closed cavity thin-walled structure ceramic matrix composite component overall forming tooling and method, in order to solve the existing technology exists ceramic matrix composite component parts assembly gap, overall strength is insufficient, service life is reduced and other insufficient, the present application large complex closed cavity thin-walled structure ceramic matrix composite component overall forming tooling includes shaping auxiliary tooling and graphite forming die, shaping auxiliary tooling includes M skeleton box shaping tooling and first bottom plate, wherein, M is greater than or equal to 1, graphite forming die includes M inner mold forming die, annular forming die and outer mold forming die, the present application large complex closed cavity thin-walled structure ceramic matrix composite component overall forming method is based on the above tooling, in turn includes preform shaping, preform densification forming, component processing, realizes overall forming.

The utility model belongs to the technical field of vehicles, and particularly relates to a damping connecting support and a wheelbarrow, the damping connecting support comprises a frame, a wheel, connecting rod assemblies and elastic assemblies, and the connecting rod assemblies are arranged on the two sides of the wheel; the connecting rod assembly comprises a first connecting rod module and a second connecting rod module, the upper end of the first connecting rod module is rotationally hinged to the frame, the lower end of the first connecting rod module is rotationally hinged to the upper end of the second connecting rod module through a connecting component, and the lower end of the second connecting rod module is hinged to the axis of the wheel; the first connecting rod module and the second connecting rod module are connected with a frame and wheels through the first connecting rod module and the second connecting rod module, and vibration energy is fully absorbed and dispersed through the elastic assembly. The vehicle frame is prevented from inclining forwards or backwards in the damping process when the vehicle deals with complex road conditions and large impact, the height of the vehicle frame is reduced, and the gravity center of the vehicle is lower.

This invention discloses a solid asphalt based on ultrafine rock asphalt, a high-performance asphalt mixture prepared from the solid asphalt, and a preparation method thereof. The solid asphalt includes ultrafine rock asphalt, desulfurized rubber powder, binder, interface reinforcing agent, filler, and exothermic accelerator, wherein the exothermic accelerator is selected from dicyandiamide, 4,4'-diaminodiphenyl sulfone, phthalic anhydride, or pyromellitic dianhydride. The asphalt mixture includes solid asphalt, aggregate, and blending oil, wherein the blending oil includes epoxy resin blending oil and blending oil B. In preparing the asphalt mixture, after determining the aggregate gradation, the aggregate is preheated to 170-180°C, and then solid asphalt is added and mixed for 8-12 seconds to obtain the mixture. Then, the epoxy resin blending oil is preheated separately, and then blending oil B and epoxy resin blending oil are added to the mixture sequentially, and mixed for 30-60 seconds. The present invention, based on solid asphalt, not only changes the existing liquid asphalt mixing system, but also enables rapid liquefaction of asphalt within aggregates in a short time and improves the interfacial adhesion between asphalt and aggregates.

The invention discloses a conventional direct-current online power flow reversal method for a novel power system, and relates to the technical field of power flow reversal. Comprising the following steps: constructing a conventional direct-current bipolar structure, dividing the change process of direct-current power, voltage and current parameters generated by the conventional direct-current bipolar structure into five stages, setting power parameters in different stages, setting constraint conditions, and performing conventional direct-current online power flow inversion by using the set parameters and the constraint conditions. According to the invention, dead-zone-free rapid power control can be realized, the conventional direct current down-regulation capability is fully exerted, and the flexible regulation potential of conventional direct current is greatly released.

The present invention relates to the technical field of traffic signal control, and specifically to a control device and method for a signalized intersection with a waiting area under a colored Petri net. Define an intersection; construct a modular model of the intersection path according to the definition of the intersection; construct a modular model of intersection path signal control according to the definition of the intersection, including a path signal control model without a waiting area and a path signal control model with a waiting area; construct a Petri net model of the intersection by combining the modular models of the path to establish a control model for the signalized intersection. The model constructed by the present invention can flexibly switch the signal lights of the waiting area and the non-waiting area, and is suitable for various types of intersections with and without waiting areas, and can reduce or even avoid traffic accidents caused by drivers being unable to respond in time due to signal light switching.

The invention relates to the technical field of wharf construction, in particular to an automatic tamping and rock drilling all-in-one machine and a wharf construction method. An automatic tamping and rock drilling all-in-one machine comprises a ship body; the track is arranged in the length direction of the ship body; the hoisting assembly comprises a base, a traction mechanism and an arm frame, the base can move in the length direction of the track, the arm frame is arranged on the base, the traction mechanism is connected to the arm frame, and the traction mechanism is used for hoisting a rock drilling hammer or a rammer; and the winch is connected with the traction mechanism. An automatic ramming and rock drilling all-in-one machine overcomes the defects that in the prior art, when a ramming machine works in wharf construction, the position of a ship needs to be adjusted so as to adjust the position of the ramming machine, the time for adjusting the ship is long, and the working efficiency is affected.

According to the rapid preparation method, graphene oxide is used as a carbon source and a substrate, metal chloride is used as a raw material, and a Joule heating method is adopted to prepare the carbide ultrahigh-temperature ceramic nanoparticle-graphene composite material. Through short-time rapid high-temperature thermal shock, reduction of graphene oxide and rapid and uniform synthesis of carbide superhigh-temperature ceramic nanoparticles on graphene are synchronously realized. The synthesis process is simple and controllable, the preparation device is simple, the requirement on equipment is low, the industrial production cost can be reduced, and the preparation method is suitable for large-scale preparation of the carbide ceramic-graphene composite material, so that the carbide ceramic-graphene composite material can be more widely applied.

The invention discloses a large-tube-hole continuous spiral baffle plate heat exchanger which mainly comprises a shell, heat exchange tubes, spiral baffle plates, pull rods, pipe spacers, tube plates, tube boxes, connecting tubes and the like, the heat exchange tubes are evenly arranged in the shell and penetrate through the spiral baffle plates to be fixed to the tube plates at the two ends, the spiral baffle plates are used for supporting the heat exchange tubes, and the tube boxes are used for supporting the heat exchange tubes. The spiral baffle plates are arranged in a spiral mode relative to the axis of the heat exchange tube, the diameter of tube holes in the spiral baffle plates is larger than the outer diameter of the heat exchange tube, the difference value range of the diameter of the tube holes and the outer diameter of the heat exchange tube is 1-3 mm, the heat exchange tube penetrates into the tube holes to form annular holes, high-temperature-resistant inorganic sealant is poured into the annular holes, and the annular holes are completely made up. And the heat exchange tube and the spiral baffle plate are fixed together through glue. The large-pipe-hole continuous spiral baffle plate greatly reduces the manufacturing precision requirement and the installation difficulty of the heat exchange pipe, pipe hole annular gaps are made up through sealant, leakage flow of shell pass fluid is effectively avoided, and the heat transfer performance of the heat exchanger is effectively improved.

The utility model provides a damping mechanism for an aircraft interior, which relates to the field of aircraft interior accessories and comprises a fixing box and a support, the fixing box is provided with a containing space, a damping bag is arranged in the containing space, and the support enters the containing space and is connected with the damping bag, so that the support has a damping function within the deformation range of the damping bag. The damping mechanism for the aircraft interior trim has the advantages of being good in damping effect, large in radial rigidity and axial rigidity, capable of being rapidly disassembled and assembled and the like.

This utility model discloses an adjustable hydraulic slope protection net, relating to the field of hydraulic construction technology. Its key technical features include: a foldable protective net panel with support mechanisms on both sides; each support mechanism includes a column, the side of which is hinged to the edge of the protective net panel; a weighted base fixedly mounted at the bottom of the column; a rotating block rotatably connected to the top of the column via a pivot; a limiting plate fixedly mounted on one side of the rotating block; a limiting space between the limiting plate and the rotating block, which is adapted to the limiting plate; and two support mechanisms that can be interlocked via the limiting plate. A limiting component is provided on the side of the rotating block away from the limiting plate to restrict its rotation. This utility model is easy to assemble and disassemble, improving assembly and disassembly efficiency.

This utility model discloses a multi-angle adjustable connector for a ceiling transition layer, including a bolt ball connector, a hanger, a rotating disk, and a C-shaped connector. The bolt ball connector, hanger, and rotating disk are connected sequentially from top to bottom. The C-shaped connector is installed on the outer wall of the rotating disk. The C-shaped connector includes a C-shaped connecting block and a U-shaped connecting block. The two sides of the C-shaped connecting block are respectively attached to the upper and lower end faces of the rotating disk. The C-shaped connecting block is provided with connecting bolts. The C-shaped connector of this utility model can be adjusted left and right by 90°, providing a large adjustment range. It is suitable for installation in large spaces with irregularly shaped grid-frame decorative ceiling transition layers. Furthermore, when connecting with the rotating disk, the connecting bolts do not require precise insertion into the rotating disk, ensuring connection strength while reducing the precision requirements during installation, thereby reducing rework rate and improving installation efficiency.

This application discloses a DTB crystallization system, belonging to the field of chemical equipment. It includes: a DTB crystallization unit with a fine crystal circulation outlet, a crystallization heat exchange outlet, a crystallization heat exchange return outlet, a steam outlet, and a discharge outlet; a first heat exchange unit with a first heat exchange inlet and a first heat exchange outlet; the crystallization heat exchange outlet is connected to the first heat exchange inlet, and the first heat exchange outlet is connected to the crystallization heat exchange return outlet; a fine crystal elimination unit including: an elimination unit with a fine crystal circulation inlet, a raw material liquid inlet, an elimination heat exchange outlet, and an elimination heat exchange return outlet; the fine crystal circulation outlet is connected to the fine crystal circulation inlet; a second heat exchange unit with a second heat exchange inlet and a second heat exchange outlet; the elimination heat exchange outlet is connected to the second heat exchange inlet, and the second heat exchange outlet is connected to both the elimination heat exchange return outlet and the crystallization heat exchange return outlet. This system structure is flexibly adjustable and suitable for the high-value treatment of waste salts with complex compositions, large fluctuations, and small scale.

The application relates to the technical field of contact operating mechanisms, and provides a modularized half-shaft tripping mechanism which comprises a frame plate, a closing electromagnet fixed on the frame plate, a closing top plate rotatably installed on the frame plate, one end of the closing top plate used for cooperating with the closing electromagnet, a connecting rod rotatably connected to the other end of the closing top plate, a rotating arm of a closing half-shaft rotatably connected to the other end of the connecting rod, the closing half-shaft rotatably arranged on the frame plate, and a secondary latch rotatably arranged on the frame plate, wherein the secondary latch is provided with a latch shaft rotatably arranged on the frame plate, a first supporting part and a second supporting part fixed on the latch shaft, and the first supporting part abuts against the closing half-shaft and has a predetermined tripping amount between the first supporting part and the closing half-shaft, and the second supporting part abuts against a cam in an energy storage state. Therefore, the pressure borne by the closing half-shaft and the secondary latch does not need to be directed to the shaft center, the requirement for the installation precision is effectively reduced, and the controllability and safety of the closing action are improved.

The invention belongs to the technical field of building construction, and particularly relates to a lifting device for building construction. Comprising a lifting frame and a transmission assembly, one side of the lifting frame is fixedly connected with a frame with the upper portion and the lower portion being of an open structure, a positioning block capable of turning over automatically is arranged in the frame, a cart enters from the bottom of the frame, and the positioning block supports and fixes the bottom face of the cart after turning over reversely; a self-adaptive clamping mechanism is arranged on the inner side of the frame and comprises a bidirectional screw rod, a long rod, a movable seat, a clamping arm and a movable arm; through the cooperation of the clamping arm, the movable arm and the movable seat, the clamping arm can be automatically adjusted according to the shape of a clamped cargo, the dynamic adjustment ensures that the clamping arm can tightly and uniformly clamp the cargo, the stability in the lifting process is improved, the risk that the cargo falls off in the lifting process is reduced, and the working efficiency is improved. And a safer working environment is provided for constructors.

The utility model discloses a fuel tank assembly of an operating machine, which comprises a fuel tank and a covering part, a fuel filling port is arranged on the fuel tank, a via hole for the fuel filling port to pass through is arranged on the covering part, a sealing part is arranged between the fuel filling port and the via hole, and the fuel filling port and the via hole are communicated through the sealing part. The sealing piece comprises a first sealing part, a second sealing part and a flow guide part, the first sealing part, the second sealing part and the flow guide part are integrally formed, the flow guide part is obliquely arranged, the first sealing part is located at the top of the flow guide part and is in sealing fit with the outer wall of the fuel filling port, and the second sealing part is located on the lower side of the flow guide part; and a clamping cavity for accommodating the edge of the via hole of the covering part is formed between the second sealing part and the flow guide part. According to the scheme, the problem that in the prior art, fuel leakage is prone to occurring at a fuel filling opening of a fuel tank is solved.

The application provides a kind of suspension disc positioning mechanism and surgical robot, the suspension disc positioning mechanism includes at least two suspension discs, each of the suspension disc is respectively with a first rotation axis, the suspension disc is rotatably arranged around the first rotation axis, the first rotation axis of at least two suspension discs extends in the same direction;At least two suspension discs are configured to move in the direction perpendicular to the first rotation axis;Each of the main suspension disc is respectively used for at least one mechanical arm connection.Such, at least two suspension discs are rotatably arranged around the respective first rotation axis, and at least two suspension discs also move in the opposite direction perpendicular to the first rotation axis, each suspension disc is respectively hung at least one mechanical arm, and multiple mechanical arms can be quickly adjusted to the corresponding position with the suspension disc, to meet the quick operation layout of mechanical arm.In addition, by distinguishing at least two suspension discs, each mechanical arm on the suspension disc can obtain greater adjustment space.

The invention discloses a micro-grid demand response scheduling method and device based on an aggregation temperature control load, terminal equipment and a computer readable storage medium, and the method comprises the steps: obtaining a rigid load prediction value, a photovoltaic output prediction value, a fan output prediction value and a power grid electricity price of a to-be-scheduled time period, and taking the minimum scheduling cost as a target; constructing a micro-grid demand side response model; solving the model, and generating the response power of the aggregation temperature control load in the to-be-scheduled time period when the scheduling cost objective function is minimum; substituting the response power of the aggregation temperature control load in the to-be-scheduled time period into the aggregation temperature control load model, and updating the virtual charge state of the aggregation temperature control load; wherein the aggregation temperature control load model is constructed based on the number of single temperature control loads and parameters of each virtual battery in each temperature control load; and according to the virtual charge state of the aggregation temperature control load, adjusting power generation of the demand response side of the micro-grid. According to the invention, the flexibility and stability of micro-grid scheduling can be improved.

The utility model relates to the field of modern seat accessories, and particularly discloses a multi-adjustment comfortable seat headrest which comprises a headrest body and a backrest connecting piece, and the headrest body is installed on a backrest of a seat through the backrest connecting piece. The headrest comprises a shell, a pillow cushion is arranged on the shell, a sliding assembly is further arranged in the shell, a neck arm is arranged on the sliding assembly, a neck cushion is arranged on the neck arm, supporting edges for supporting the neck cushion are arranged on the side wall of the neck arm, the pillow cushion and the neck cushion are made of latex shaping cotton materials, and an arc-shaped neck attaching face is further arranged on the pillow cushion. The sliding assembly comprises a limiting rail base arranged on the side wall of the shell, and the tail end of the neck arm is inserted into the limiting rail base. By means of the neck attaching face arranged in the center of the pillow cushion, when the neck of a user abuts against the pillow cushion, the back of the neck body can be attached and supported, the neck cushions on the two sides of the neck attaching face can be attached and supported on the two sides of the neck body, and therefore the neck of the human body is stably supported, and cervical vertebra fatigue of the user caused by long-time sitting is relieved.

The invention relates to the technical field of pipeline engineering, in particular to a multi-fixed-point deformation buffering and stress dispersion arrangement method for a large-pipe-diameter inclined pipeline. According to the method, firstly, mechanical analysis and point distribution planning are carried out, and at least three false fixing points are additionally arranged on an inclined pipe section between fixing points on a slope and fixing points under the slope according to an analysis result. Then material selection and structural design are conducted, structural steel with good elastoplasticity is selected to construct false fixing points, axial thrust and gliding component force borne by the pipeline are absorbed and dispersed through deformation of the structural steel, and buffering devices are arranged at the fixing points. And finally, construction and connection are implemented. By additionally arranging the deformable false fixing points, the stress of the pipeline is actively dispersed and buffered, the problem of stress concentration of the fixing points under the slope is effectively solved, and the service life of a pipeline system is remarkably prolonged.