373results about How to "Reduce post-maintenance costs" patented technology

The utility model discloses a spherical latticed shell glass curtain wall construction node which comprises a plurality of glass plate units which are mutually connected to form a sphere, each glass plate unit comprises two glass plate bodies which are mutually connected, and metal hooked edges are fixedly installed on the side end faces of the connecting positions of the two glass plate bodies. The connecting folding groove is used for being fixed to one side of a curtain wall keel; the connecting assembly is used for connecting the metal hooked edge and the connecting folding groove, the connecting assembly comprises a first adapting corner connector and a second adapting corner connector, the first adapting corner connector is fixedly connected to the glass plate body, and the second adapting corner connector is fixedly connected to the connecting folding groove and connected with the first adapting corner connector in a hinged mode. The on-site construction procedure is simple, only the height of the hanging weight needs to be adjusted, nailing is needed, the construction period is shortened, meanwhile, the adapting corner connectors are hinged through hinges and can be adjusted in a self-adaptive mode, the problem that the angles of the triangular glass plate units are inconsistent is solved, and certain popularization value is achieved.

The invention discloses an existing anchoring and shotcreting side slope ecological restoration technology and method with shrub planting as the core, a side slope vegetation hole environment improving device and a hole filling layered structure design are included, and the side slope vegetation hole environment improving device is mainly composed of a conical threaded drill bit, a connecting rod, a motor, a metal connecting hose, a pressure storage tank and an air compressor. The motor provides power for penetration of the gas injection needle head, and the air compressor provides power for injection of the plant nutrient solution; the vegetation hole layered structure comprises a bottom water retention layer, a base fertilizer layer, a nutrient soil layer and a surface covering layer; environment improvement is conducted on the vertical and horizontal directions of the planting holes through an environment improvement device, local dominant shrubs are planted in the planting holes, and local dominant vine plants are planted at the top of the slope to comprehensively and ecologically protect the slope; comprising the following steps: step 1, investigating and surveying plant communities and analyzing slope stability; step 2, slope vegetation hole environment improvement; 3, planting hole construction; and 4, slope top vine plant ecological slope protection construction is carried out.

The invention discloses a solid waste-based cold-mixed asphalt mixture for preventive maintenance as well as a preparation method and application thereof, and belongs to the technical field of road engineering. The solid waste-based cold-mixed asphalt mixture is prepared from the following components in percentage by mass: 4.7 to 8.6 percent of modified cold-mixed asphalt adhesive, 85.8 to 93.9 percent of aggregate and 1.4 to 5.6 percent of composite filler, the modified cold-mixed asphalt adhesive is prepared from the following components in parts by weight: 86 to 96 parts of emulsified asphalt, 1 to 5 parts of bisphenol A type waterborne epoxy resin emulsion, 0.05 to 1 part of curing agent, 0.01 to 0.05 part of defoaming agent, 1.5 to 8 parts of waterborne polyurethane emulsion and 1 to 3 parts of hydroxypropyl methyl cellulose. The solid-waste-based cold-mixed asphalt mixture prepared by the method shows excellent comprehensive performance in high-temperature rut resistance, water damage resistance, freeze-thaw resistance, skid resistance, volume stability, interlayer shear resistance and the like, promotes reasonable utilization of solid waste resources, and has good economic and environmental benefits.

The invention relates to the technical field of non-road mobile mechanical dynamics models, in particular to a method for establishing a digital model of a vibration system of a road roller. The method comprises the following steps: acquiring an initial pavement material vibration characteristic data set; performing multi-physical field coupling analysis on the initial pavement material vibration characteristic data set to obtain pavement material response characteristic data; performing dynamic system modeling on the vibration system of the road roller based on the pavement material response characteristic data to obtain an initial digital model of the vibration system; performing dynamic feature extraction on the initial digital model of the vibration system to obtain dynamic parameter mapping data of the vibration system; and performing parameter calibration on the initial digital model of the vibration system based on the dynamic parameter mapping data of the vibration system to obtain a digital model of the vibration system. The intelligent vibration system model can accurately capture the dynamic characteristics of soil, and the optimal compaction effect is achieved.

The invention relates to the technical field of rail transit, in particular to a brake disc connecting structure, a full-disc type brake device and a rail vehicle. In the brake disc connecting structure, a brake disc comprises a plurality of brake movable discs and a plurality of brake movable discs which are arranged at intervals, a core shaft is suitable for being connected with a braked power shaft, the core shaft is arranged at the axis of the brake disc in a penetrating mode, the core shaft is fixedly connected with all the brake movable discs and can synchronously rotate, and all the brake discs can enable the core shaft to brake the power shaft through mutual extrusion. Wherein a center plate is arranged in the mandrel, one end of the center plate is connected with the inner wall of the mandrel, and the other end of the center plate is connected with a braked power shaft. The brake disc connecting structure is simple in overall structure and easy to disassemble and assemble, so that the later maintenance cost is reduced; moreover, the brake disc connecting structure utilizes the center plate in the mandrel to realize internal heat dissipation of the mandrel, so that the internal heat transfer path of the mandrel is prolonged, the influence of dynamic heat energy on the motor bearing is effectively reduced, the service life of the motor bearing is prolonged, and the use safety of the motor bearing is improved.

The invention discloses a sliding door locking structure and a sliding door mechanism, the sliding door locking structure comprises a lock box, the lock box comprises a lock box assembly part and a lock groove, and the lock box assembly part is used for being assembled with an upper rail; the vertical frame is provided with a sliding rail in the length direction of the vertical frame, and the vertical frame is used for being assembled with the side edge of the door body; the lock rod is arranged in the sliding rail in a sliding mode, one end of the lock rod is used for being connected with the lock groove in a matched and inserted mode, and the other end of the lock rod is in linkage with a handle of a door body so that the lock rod can stretch into or be separated from the lock groove. A lock hole or a lock tongue does not need to be arranged on the side edge of the door body, key components such as the lock box and the lock rod are hidden in the upper rail and the vertical frame, exposure of the lock is reduced, the safety of the door body is improved, meanwhile, the structure of the lock is simplified, the production efficiency is improved, and the production cost is reduced.

The present invention relates to the technical field of waterproofing coiled materials, and discloses a composition for polyvinyl chloride waterproofing coiled materials, a polyvinyl chloride waterproofing coiled materials, and a preparation method and application thereof. The composition contains polyvinyl chloride, ethylene-vinyl acetate-carbon monoxide copolymer, a plasticizer, a filler, expandable microspheres, a crosslinking agent, and an antioxidant; relative to 100 parts by weight of polyvinyl chloride, the content of ethylene-vinyl acetate-carbon monoxide copolymer is 10-40 parts by weight, the content of the plasticizer is 35-50 parts by weight, the content of the filler is 20-55 parts by weight, the content of the expandable microspheres is 1-3 parts by weight, the content of the crosslinking agent is 1-3 parts by weight, and the content of the antioxidant is 0.1-0.4 parts by weight. The polyvinyl chloride waterproofing coiled material not only has strong tensile strength and elongation, but also has good waterproof function while being able to insulate and heat.

The utility model belongs to the field of electric wire stringing cable connectors, and particularly relates to an electric power transmission electric wire stringing cable connector which comprises a base. The top end of the base is provided with a plurality of street code main bodies, and a dismounting mechanism is arranged between the base and the street code main bodies. The dismounting mechanism comprises first fixing blocks, the first fixing blocks are arranged on one side of the base, one ends of the first fixing blocks are fixedly connected with one side of the base, threaded rods are inserted into the side ends of the first fixing blocks, and the first fixing blocks are rotationally connected with the threaded rods; through the design of the dismounting mechanism, the function of dismounting a single street code is achieved, and the problems that an existing street code is integrated with the base and cannot be dismounted independently, when a single street code is damaged and broken, the damaged street code cannot be dismounted and replaced independently, only the whole street code can be dismounted and replaced, and the maintenance cost is low are solved. Therefore, the later-stage maintenance cost is increased, and the later-stage maintenance cost is reduced.

The invention discloses a data permission controller and a data platform. The data permission controller comprises a predefined annotation, a section and a permission checker, the predefined annotation is used for determining the opportunity when the section is woven into the program of the data platform, annotation information of a basic element in the program is marked, and / or annotation information of a member variable in the basic element is associated with verification logic, and the verification logic is included in a permission verifier; the tangent plane is used for being woven into a program of the data platform and used for determining target annotation information corresponding to the basic elements of the entry point, responding to data access, and conducting data permission control according to target verification logic associated with the target annotation information. The data permission controller comprises the annotation, the section and the permission checker, and a lightweight independent framework can be formed and woven into the data platform in a weak intrusion mode, so that the data platform can simply and flexibly achieve the control effect of the row-level data permission through the data permission controller.

The invention discloses a fabricated pier column non-dismantling formwork, and relates to the technical field of building structures, the fabricated pier column non-dismantling formwork comprises arc-shaped splicing blocks, at least two arc-shaped splicing blocks are sequentially spliced in the annular direction to form a cylindrical unit, and a plurality of cylindrical units are sequentially spliced in the longitudinal direction; uniformly-distributed bosses are arranged on the inner walls of the arc-shaped assembling blocks, circular-truncated-cone-shaped annular fasteners or combined fasteners are installed on the bosses at the butt joint positions of the adjacent arc-shaped assembling blocks, the circular-truncated-cone-shaped annular fasteners or the combined fasteners are connected with L-shaped fasteners, and the adjacent L-shaped fasteners are connected through tie bars; and the L-shaped fasteners and the arc-shaped splicing blocks are fixed through connecting pieces. The stability and the stress performance of the cylindrical formwork are guaranteed, and the lateral pressure resistance and the deformation resistance of a formwork system in the concrete pouring process are effectively improved.

The invention relates to the technical field of copper pipe heat dissipation, in particular to a micro-channel heat dissipation device based on a copper pipe structure, which comprises a heat dissipation substrate, a copper pipe type heat dissipation channel and a liquid cooling circulation system, the copper pipe type heat dissipation channel is composed of a plurality of plastic copper pipes and replaces a traditional micro-channel or vapor chamber structure. The copper pipe is embedded or fixed in the heat dissipation substrate or on the surface of the heat dissipation substrate, cooling liquid circulates in the copper pipe, and efficient heat dissipation is achieved through the combined action of forced convection heat exchange and heat transfer; the copper pipe has good plasticity and can be subjected to three-dimensional bending forming according to heat source distribution and spatial layout, through the synergistic effect of forced convection and phase change heat transfer, the heat transfer efficiency is improved, particularly, extremely high local heat flow density can be coped, the chip is effectively prevented from being overheated, and the heat transfer efficiency is improved. The heat dissipation channel can be bent and formed in a three-dimensional space according to heat source distribution, accurate matching with the heat source form is achieved, limitation of traditional plane heat dissipation is broken through, and optimal configuration of heat dissipation capacity and heat flux density is achieved.

The invention discloses a cast steel swing check valve and a using method thereof.The cast steel swing check valve comprises a valve body, the valve body is in bolted connection with an external pipeline through flange plates A fixedly arranged at the two ends of the valve body, and a valve deck is in bolted connection with the top of the valve body and used for sealing the top of the valve body; the swing assembly is detachably installed on the position, close to the top, of the inner wall of the valve body. The replaceable wear-resistant pad is arranged on the contact surface of the valve clack and the internal channel opening of the valve body, so that the contact surface of the valve clack can be prevented from being impacted and damaged through the wear-resistant pad when the valve clack is frequently reset for a long time, the internal valve clack is prevented from being replaced, only the wear-resistant pad needs to be replaced, the later maintenance cost is reduced, and the service life of the valve clack is prolonged. And the clamping assembly is arranged in the valve body, so that the check valve can conveniently select whether the valve clack is clamped and fixed or not in different working environment requirements, and then the convenience and reliability of the check valve in use are improved.

The invention belongs to the technical field of concrete slabs, and particularly discloses a fiber-reinforced autoclaved aerated concrete slab and application thereof, the concrete slab comprises the following raw materials by weight: 10-15 parts of quicklime, 60-80 parts of sand, 3-5 parts of gypsum, 15-25 parts of cement, 0.25-0.5 part of fiber, 0.04-0.1 part of aluminum powder, 180-250 parts of water, and 0.1-0.25 part of an active activator; the active exciting agent is prepared from the following raw materials in parts by weight: 8 to 10 parts of sodium butyl naphthalene sulfonate, 4 to 5 parts of sulfamethoxazole, 17 to 20 parts of lauryl sodium sulfate, 6 to 8 parts of polycarboxylate superplasticizer and 25 to 30 parts of graphite soil; traditional constructional steel bars are replaced with fibers, the problem of steel bar corrosion caused by cutting can be solved, meanwhile, the procedures of steel bar mesh splicing and rust prevention are omitted, and the production efficiency of the plate is remarkably improved; besides, the fibers and the active exciting agent are combined for use, and uniform dispersion of the fibers in the green body is ensured, so that the mechanical property, the anti-mildew property and the saltpetering resistance of the concrete slab are enhanced, and the later maintenance cost is remarkably reduced.

The invention relates to the technical field of industrial automation control, in particular to a valve positioner control algorithm switching method, system and device based on self-tuning and a storage medium, and the method comprises the steps that S1, a self-tuning calibration process is executed on a valve, and motion parameters including the whole-course motion time, the position deviation and the minimum effective control quantity of the valve are obtained; s2, according to the motion parameters, a discrimination factor representing the resistance characteristic of the valve is obtained through calculation according to a preset weighted calculation formula; and S3, comparing the discrimination factor with a preset critical value, automatically selecting a target control algorithm from a plurality of pre-stored control algorithms according to a comparison result, and performing closed-loop control on the valve by adopting the target control algorithm. According to the method, the control algorithm and the resistance characteristic of the valve are automatically and accurately matched, the adaptability, the stability and the control quality of valve control are effectively improved, and meanwhile the debugging and maintenance cost is remarkably reduced.

The utility model relates to the technical field of crushing devices, and discloses a household garbage incineration slag reciprocating type extrusion crushing device which comprises a crushing box, a fixed crushing plate is fixedly installed on the side wall of the upper portion in the crushing box, and a movable crushing plate matched with the fixed crushing plate is movably connected to the upper portion in the crushing box in the horizontal direction. A plurality of crushing ribs are arranged on the opposite side faces of the fixed crushing plate and the movable crushing plate, a first driving motor is fixedly mounted on one side of the crushing box, and a first rotating shaft with one end fixedly mounted to the output end of the first driving motor is rotationally connected into the crushing box; an eccentric rotating shaft not concentric with the first rotating shaft is fixedly installed on the side face, located in the smashing box, of the first rotating shaft. According to the crushing device, reciprocating extrusion is adopted for crushing, and the movable crushing plate is matched to be inclined, so that large furnace slag can be crushed, the furnace slag cannot be clamped, the efficiency of crushing the furnace slag of the domestic incinerator is improved, and meanwhile, a crushing part is not prone to being damaged.

The utility model relates to a vehicle-mounted ceiling screen support assembly formed by punching a galvanized steel sheet, which comprises a fixed support, an overturning component, a supporting component and a spring bolt component, the fixed support is made of the galvanized steel sheet formed by punching, a reinforcing structure is formed on the surface of the fixed support, and a screw hole is formed on the surface of the fixed support; the overturning assembly and the supporting assembly are symmetrically arranged on the two opposite sides of the screen. A side opening clamping structure is arranged on a shell of the overturning assembly and a shell of the supporting assembly, a vibration isolation sleeve is embedded in the clamping structure, a center through hole is formed in the vibration isolation sleeve, the vibration isolation sleeve is fixed to the screw hole through a step screw, and the outer diameter of the step face of the step screw is in interference fit with the inner diameter of the center through hole of the vibration isolation sleeve. According to the vehicle-mounted ceiling screen support assembly formed by stamping the galvanized steel sheet, the galvanized steel sheet formed by stamping is adopted as a core structure, all the components are optimally designed, and the effects that cost is reduced, structural strength is improved, vibration isolation and assembly are simplified, and installation adaptability is enhanced are achieved.

The utility model relates to the technical field of junction boxes, in particular to a buckle type junction box convenient to disassemble and assemble, which comprises a box body, a box cover and a locking assembly, the box body is rotatably connected with the box cover, two ends of the box body are respectively provided with a wire inlet and a wire outlet, the locking assembly consists of a fixed part and a movable part, and the fixed part arranged in parallel left and right is connected with the box body. And movable pieces arranged in parallel left and right are connected to the box cover. According to the utility model, when the box cover is in contact with the box body, the first L-shaped plate and the clamping block are in contact with the matching groove formed in the matching block, and the second L-shaped plate and the self-locking block are inserted into the limiting grooves formed in a large number of fixing pieces, so that the first L-shaped plate and the second L-shaped plate form a double-self-locking structure; the problem that a common self-locking structure is loosened and falls off due to external force and leg contact is avoided, meanwhile, the fixing piece is connected to the mounting plate, and the fixing piece is rapidly replaced by disassembling and assembling the mounting plate so as to reduce later maintenance and use cost.

The invention relates to a roof waterproof system based on ultra-high-performance concrete waterproof layers, which is characterized in that at least one ultra-high-performance concrete waterproof layer is arranged on a roof, and the ultra-high-performance concrete waterproof layer is not provided with a dividing joint; the ultra-high performance concrete waterproof layer serves as a part of the structural layer and forms a composite waterproof layer with the common reinforced concrete layer of the structural layer. Or the ultra-high-performance concrete waterproof layer is laid on the structural layer, the slope making layer or the heat preservation layer to form an ultra-high-performance concrete independent waterproof layer; when the ultra-high performance concrete independent waterproof layer is arranged on the structural layer or the slope making layer, the leveling layer can be canceled; when the ultra-high-performance concrete independent waterproof layer is arranged on the heat preservation layer, the isolation layer is arranged between the ultra-high-performance concrete independent waterproof layer and the heat preservation layer, the ultra-high-performance concrete independent waterproof layer has waterproof and protection functions, and a protection layer can be omitted. The long-acting waterproof goal that the roof is waterproof and the building structure has the same service life is achieved, the roof structure level is simplified, the construction efficiency and the engineering quality are improved, and the construction cost is reduced.

The invention discloses a biomedicine standardized cubesat platform and a working method, and relates to the technical field of space.The biomedicine standardized cubesat platform adopts a 3U cubesat framework, the top layer of the 3U cubesat framework is provided with a satellite bus module, the middle layer of the 3U cubesat framework is provided with an energy and environmental control life support module, and the bottom layer of the 3U cubesat framework is provided with a biological experiment module; the satellite bus module is in bidirectional communication with the energy and environment control life support module and the biological experiment module through data interfaces. The satellite bus module further communicates with a ground station; the energy and environment control and life support module supplies energy to the satellite bus module and the biological experiment module through electrical interfaces, and provides oxygen supply, water supply and environment regulation and control support for the biological experiment module through a fluid transmission channel. Through a standardized and modularized cubesat structure, the functions of biological sample culture, environment regulation and control, real-time monitoring, data return and the like are integrated, and a low-cost and quick-response technical support is provided for space life science experiments.

This utility model relates to the field of building construction, and more particularly to an assembled steel culvert gate. The assembled steel culvert gate includes a steel pipe with multiple reinforcing rings installed on its outer side. Multiple reinforcing haunches are connected to both ends of the outer side of the steel pipe, and panels are installed at both ends of the outer side of the steel pipe. A gate is installed on one of the panels, located at one end of the steel pipe. Main crossbeams are installed at the top and bottom of the two panels on opposite sides. The assembled steel culvert gate provided by this utility model uses a steel pipe as the main load-bearing structure, combined with a support system composed of reinforcing rings, reinforcing haunches, and longitudinal and transverse steel channels. This effectively resists soil pressure, water flow impact, and ground loads, exhibiting high structural strength and good stability. Even under conditions of uneven foundation settlement, the good toughness of the steel structure can prevent serious damage such as cracking and fracture, ensuring the long-term stable operation of the culvert gate.

The application relates to the technical field of optical cable stranding, in particular to a cable core stranding gun device which comprises a main assembly seat, a stranding seat, a central pipe and a stainless steel pipe, the central pipe and the stainless steel pipe are fixedly installed between the main assembly seat and the stranding seat. The cable core stranding gun device is fixedly installed with a wire winding stator for driving a ring rotor in a ring-shaped guide rail on the inner side of the stranding seat, an internal driving mechanism is adopted, a driving structure does not need to be arranged externally, and the space utilization rate is greatly improved; an internally adjustable wire cylinder is directly assembled on the inner side arc surface of the ring rotor, the driving mode is more direct, kinetic energy loss is greatly reduced, and the cable core stranding gun device is more energy-saving and environment-friendly; the internally adjustable wire cylinder can be adjusted in the horizontal and vertical directions according to needs, the stranding mode is more various, and the applicability is greatly enhanced; through adoption of a quick-release structure design, the post-maintenance cost can be reduced, and the maintenance difficulty can be reduced.

The application discloses a target direction tracking filtering method based on multi-dimensional motion characteristics. The application combines the actual measurement angle of the target by the directional antenna, the alpha-beta filtering smooth angle, the flight speed of the target, the relative distance of the target, the relative speed vector, the native maneuvering condition and other parameters, and finally comprehensively evaluates the stable target direction. The application is a target direction tracking filtering method based on multi-dimensional motion characteristics. The method can effectively reduce the influence of the interference signal on the target measurement angle without changing the existing TCAS equipment hardware, ensures the accuracy and stability of the target tracking, improves the use satisfaction of the user, and reduces the post-maintenance cost of the equipment after installation.

The utility model discloses a bar receiving device which comprises a conveying frame, an anti-deviation guide mechanism and a receiving mechanism, and a conveying line body is arranged on the conveying frame. The anti-deviation guide mechanism comprises two guide baffles and a group of first driving assemblies, and the two guide baffles are oppositely arranged on the conveying line body at intervals; the first driving assembly is erected on the conveying frame through the gantry support and comprises two driving plates and a driving unit used for driving the two driving plates to move relatively so as to drive the two guide baffles to be close to each other relatively to form an anti-deviation channel. The material receiving mechanism is arranged at the rear end of the conveying frame and comprises a material receiving box in butt joint with an outlet of the deviation preventing channel and a second driving assembly used for driving the material receiving box to swing front and back. According to the bar collecting device, the first driving assembly is erected on the conveying frame through the gantry support, the occupied space of the device is reduced, meanwhile, safety is improved, and equipment investment and later maintenance cost are reduced.

This application discloses a diverter, which includes a valve housing, a pressure regulating component, and a diverting component. The valve housing includes an upper valve body shell and a lower valve body shell connected to each other. The upper and lower valve body shells constitute an inlet chamber, a return chamber, and an outlet chamber. The outlet chamber can communicate with the inlet chamber through the return chamber. The upper valve body shell is a one-piece molded component, and / or the lower valve body shell is a one-piece molded component. The pressure regulating component is disposed in the inlet chamber. The diverting component is disposed in the outlet chamber. The return chamber is used to collect the pressure-stabilized water after it has been stabilized by the pressure regulating component and the excess water returned by the diverting component, and then output it to the water purifier. A drinking water purification system using this diverter is also disclosed. The technical solution of this application integrates pressure reduction, diversion, and return functions into the valve housing, which not only simplifies the piping layout in the drinking water purification system but also greatly reduces the space occupied.

The invention belongs to the technical field of foundation treatment in civil engineering, and discloses a device for preparing a composite foundation treatment pile body section through deep modification of waste flow-state sludge, which comprises a rigid frame, an electric hoisting mechanism, a pile body forming mechanism, a sliding bearing mechanism and a sliding releasing mechanism, the rigid frame and the electric hoisting mechanism are used for hoisting and fixing an upper closing cover of the pile body forming mechanism; the pile body forming mechanism is used for pressurizing, dehydrating and forming the mud subjected to flocculation-solidification conditioning; the sliding bearing mechanism is arranged on a rigid frame base of the device, bears the pile body forming mechanism and facilitates material filling. After the pile body sections are formed, the pile body can be separated from the pile body forming mechanism and temporarily stored or conveyed to a centralized place for maintenance through the sliding separation mechanism. Waste flow-state sludge is directly converted into a high-reinforcement solidified soil column capable of being used as a precast pile component, and then the high-reinforcement solidified soil column and a gravel drainage body are assembled, so that the effects of shortening the construction period, reducing post-construction settlement and improving the bearing capacity of a composite foundation are achieved.

The invention discloses a vehicle D column structure, a manufacturing method thereof and a vehicle, the vehicle D column structure comprises a rear support column reinforcing plate assembly, a rear support column inner plate assembly and a D column tubular beam assembly, and the D column tubular beam assembly is arranged between the rear support column reinforcing plate assembly and the rear support column inner plate assembly. The D-column tubular beam assembly comprises a D-column tubular beam extending in the longitudinal direction and a plurality of connectors arranged at the two ends of the D-column tubular beam. The multiple connectors comprise a C-column tubular beam connector located at one end, a D-column upper tubular beam connector, a D-column middle tubular beam connector and a D-column lower tubular beam connector, wherein the D-column upper tubular beam connector, the D-column middle tubular beam connector and the D-column lower tubular beam connector are sequentially arranged towards the other end at intervals. The D-column tubular beam is made of high-strength steel, and a plurality of joints are aluminum casting pieces and are connected into a whole through a semi-solid casting process. The manufacturing method comprises the steps that the D-column tubular beam is placed into a mold cavity, aluminum alloy is heated to the semi-solid temperature range and injected into the mold cavity, cooling forming is conducted after pressurization and pressure maintaining are conducted, and finally all assemblies are connected. The structural strength and rigidity of the D column are improved, and the safety performance of a vehicle during rolling is enhanced.

The utility model relates to the technical field of textile machinery manufacturing, in particular to an active rapier opening device of a rapier loom. The mobile cam mechanism includes a mobile cam and a roller follower assembly. The swing mechanism is driven by the beating-up swing shaft to slightly deflect. And the moving cam performs reciprocating linear displacement motion under the action of the traction force from the swinging mechanism. The roller driven assembly is used as an assembly foundation of the mounting seat. The rapier opening block is used for pressing the rapier receiving head of the rapier so that the rapier receiving head can release yarn and is fixed to the installation base. In the process that the roller driven assembly is controlled by the cam profile of the movable cam to execute reciprocating type linear displacement motion, the mounting base can drive the rapier opening block to be close to / away from the rapier receiving head of the rapier. Thus, on one hand, the displacement precision of the rapier opening block is guaranteed, and then the reliability and accuracy of implementation of the follow-up rapier opening action process are improved; and on the other hand, the service life of the rapier receiving head and the service life of the rapier opening block are greatly prolonged.

The planer type milling machine protection structure with the locking structure comprises a base, an installation frame is installed at the top end of the base, and sliding grooves are evenly formed in the installation frame. According to the planer type milling machine, the whole transparent protective cover can move up and down conveniently through the electric telescopic rod, so that the planer type milling machine body is protected in all directions, the situation that chippings generated during production and machining of a milling cutter splash to hurt workers is avoided, the safety of a production workshop is also improved, and the production efficiency is improved. The whole upper body is also convenient for a worker to place a machined part, limiting connection of the transparent protective cover and the base is achieved through a spring and a limiting block, rotation of an internal thread connecting cover is achieved through a rotating groove and a rotating block, and connection of the limiting groove and the limiting block is fixed through cooperation of a threaded connecting groove and the internal thread connecting cover; the effect of connecting and locking the transparent protective cover and the base is achieved.

The invention relates to a lens driving device, a camera module and electronic equipment, and the device comprises a housing, a focusing carrier, an aperture which synchronously moves along with a focusing lens, and a flexible electric connecting piece which adaptively deforms when the aperture moves, and at least one part of the flexible electric connecting piece is connected to the aperture and supplies power to the aperture. And the other at least one part of the flexible electric connecting piece is connected to the shell. The lens driving device has the advantages that the lens driving device is directly set to be in open-loop control, so that the structural complexity of the lens driving device is greatly reduced, meanwhile, the aperture is externally connected with the flexible electric connecting piece for control, the manufacturing and mounting processes of the lens driving device are simpler and more convenient, the production cost is reduced, and the production efficiency is improved. And the flexible electric connecting piece can adapt to deformation during complex motions such as focusing and anti-shaking, and can supply power to the aperture. The external flexible electric connecting piece can be conveniently disassembled and assembled, so that the production efficiency is improved, and the later maintenance difficulty and cost are reduced.