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239 results about "Rigid rod" patented technology

Rigid rod frequency ratio method axial force identification method

The invention discloses a rigid rod frequency ratio method axial force identification method. The method comprises the following steps: (1) according to engineering data, obtaining whether a rigid rod is a pressure rod or a pull rod, and obtaining related parameters of the rigid rod: the linear density m of the rigid rod, the length L of the rigid rod and the flexural rigidity EI of the rigid rod; (2) vibration signals of the rigid rod are collected on site through a vibration sensor, and multi-order frequency of the rigid rod is obtained through analysis; (3) selecting a corresponding method to calculate the frequency ratio of the rigid rod according to whether the rigid rod is a compression rod or a pull rod and boundary conditions, and calculating the axial force of the rigid rod through a frequency ratio method; and (4) checking the relative flexural rigidity xi of the rigid rod, and evaluating the axial force identification precision of the rigid rod. According to the method, a unified calculation method for identifying the axial force of the rigid pull rod and the pressing rod is established through a frequency ratio method, the method is easy to use and has good precision, and a practical new method is provided for identifying the axial force of the rigid rod.
Owner:XIANGTAN UNIV

Pressure-torsion coupled metamaterial cell element and negative Poisson's ratio energy absorption structure composed of same

The invention provides a compression-torsion coupled metamaterial cell element and a negative Poisson's ratio energy absorption structure composed of the compression-torsion coupled metamaterial cell element, and relates to the technical field of compression-torsion energy absorption metamaterials. The cell element comprises an upper connecting plate assembly and a lower connecting plate assembly, an upper-layer four-rod tensioning assembly and a lower-layer four-rod tensioning assembly are arranged between the upper connecting plate assembly and the lower connecting plate assembly, each of the upper-layer four-rod tensioning assembly and the lower-layer four-rod tensioning assembly comprises four compression rigid rod pieces and a plurality of tension elastic bodies, the compression rigid rod pieces are staggered in space to form a quadrangular prism-like frame, and the tail ends of the upper compression rigid rod piece and the lower compression rigid rod piece are hinged; adjacent hinge points and two corresponding corners of the surfaces of the upper connecting plate assembly and the lower connecting plate assembly are connected through tensile elastic bodies and apply pre-tightening force; the energy absorption structure is formed by combining a plurality of cell element arrays, and the negative Poisson's ratio effect is achieved by regulating and controlling the arrays. According to the cell element, a tensioning structure is integrated into a metamaterial configuration, the cell element has the compression-torsion coupling characteristic, the non-localized deformation response of the structure is achieved, and the energy absorption structure has the negative Poisson's ratio effect and provides excellent bearing and impact resistance through an efficient energy absorption mechanism.
Owner:GUANGZHOU UNIVERSITY

Three-layer lamination differential type conical surface multi-dimensional deformation mechanism

The invention provides a three-layer lamination differential type conical surface multi-dimensional deformation mechanism, and particularly belongs to the technical field of aircrafts. The three groups of outer-layer supporting sheets, middle-layer supporting sheets and inner-layer supporting sheets are circularly and sequentially arranged, so that the differential type supporting sheets cannot interfere with one another and can form a complete conical surface shape after being completely unfolded in place, and a conical surface formed by the supporting sheets is good in leakproofness and supporting performance. The device comprises a conical surface body and an actuating ring, and further comprises a guide ring, a transmission assembly and a supporting assembly. An actuating ring and a guide ring are arranged on the outer side of the conical surface body, the guide ring is located below the actuating ring, a supporting assembly is arranged below the guide ring and arranged at an opening of the bottom face of the conical surface body, and a transmission assembly is arranged between the guide ring and the supporting assembly. A spherical hinge is fixedly mounted on the bottom surface of the actuating ring, a spherical hinge is fixedly mounted on the top surface of the guide ring, and a rigid rod is arranged between the two spherical hinges; a guide groove is formed in the inner side of the actuating ring, and a linear guide piece is arranged in the guide groove.
Owner:HARBIN INST OF TECH

Measurement method, control method and measurement equipment for tail tension of dry film on film sticking machine

The invention provides a measuring method, a control method and measuring equipment for the tail tension of a dry film on a film sticking machine, and relates to the technical field of PCB manufacturing, the measuring method for the tail tension of the dry film on the film sticking machine comprises the following steps: S1, attaching an upper dry film to an upper guide block of the film sticking machine; s2, enabling a lower dry film to penetrate through the center of the pressing roller to be wound on a rigid rod; s3, pulling the rigid rod by using a tension meter; s4, the lower dry film is cut off, so that the lower dry film is adsorbed on the lower guide block; and S5, measuring the tension value of the dry film by using a tension meter. The dry film is wound on the rigid rod, the dry film is cut, the dry film is adsorbed on the guide block, and the tension of the tail of the dry film is measured through the tension meter, so that the tension of the tail of the dry film on the film sticking machine is measured, and the defects that in the prior art, the tension of the tail of the dry film on the film sticking machine cannot be quantitatively measured, and consequently tension control is inaccurate are overcome. And finally, the problems of material waste, high product reject ratio and the like are caused.
Owner:DELTON TECH (GUANGZHOU) INC

Surface cleaner with integrated hose-and-wand assembly

A hose-and-wand assembly for use with a surface cleaning apparatus having a handheld portion and a base assembly includes a flexible suction hose having first and second working positions, electrical conductors connected to or carried by the flexible suction hose, and a rigid wand body. The wand body defines an elongated slot and surrounds a wand cavity that is contiguous with the elongated slot. End couplers are connected to opposite ends of the hose and releasably connectable a respective one of the base assembly and the handheld portion. The end couplers each have electrical contacts connected to the electrical conductors. The elongated slot is configured to admit the flexible suction hose into the wand cavity for stowage therein in the first working position and release the flexible suction hose from the wand cavity in the second working position.
Owner:BISSELL INC

Inerter finite element simulation method, software apparatus, electronic device, and storage medium

Introduced are a method, a software apparatus, an electronic device, and a storage medium for simulating inerter using finite element analysis. The method involves: acquiring structural parameters of an inerter; simulating the mechanical properties of racks on rigid rods and flywheels within the inerter using the structural parameters and a finite element platform; formulating constraint equations and transformation formula to simulate translational-rotational conversion and inertia amplification mechanism of the inerter; integrating the force and constraint information to achieve the finite element simulation of the inerter. The finite element simulation method for the inerter addresses the challenge of lacking “inerter units” and the inability to simulate inertia components in general finite element software platforms. It also overcomes the technical bottleneck of real-time dynamic coupling simulation between inerter and complex engineering structures. This may effectively promote the design, optimization, and application of inerter in the vibration control of large-scale engineering structures.
Owner:SHENZHEN UNIV +1

Stuart six-dimensional force sensor, calibration device and calibration method

The invention relates to a Stewart six-dimensional force sensor, six branch chain rods distributed in an inclined manner are arranged between an upper platform and a lower platform, each branch chain rod comprises an upper rigid rod, an upper cross flexible hinge, a measuring unit, a lower cross flexible hinge and a lower rigid rod which are sequentially connected from top to bottom, the upper rigid rod is fixedly connected with the upper platform, and the lower rigid rod is fixedly connected with the lower platform. And the lower rigid rod is fixedly connected with the lower platform. A calibration device is used for calibrating a Stewart six-dimensional force sensor. The invention relates to a Stuart six-dimensional force sensor calibration method, which comprises the steps of off-line calibration and training and on-line measurement and calculation. The Stewart six-dimensional force sensor has the advantages of being large in rigidity, high in bearing capacity, stable in structure, fast in dynamic response, high in precision, good in isotropy and the like, and solves the problem that a traditional linear algorithm cannot process complex nonlinear errors. The measurement precision is reduced due to serious inter-dimensional coupling; and the complexity of a high-precision model is too high and the high-precision model is difficult to run in real time in an embedded system.
Owner:HUBEI INST OF METROLOGY & TESTING TECH +1

An offshore floating wind power and photovoltaic centralized mooring system and design method

The present invention discloses an offshore floating wind power and photovoltaic centralized mooring system, comprising: a floating wind turbine, a floating wind turbine mooring system, a floating photovoltaic array, and a floating photovoltaic mooring system. The floating wind turbine mooring system includes a mooring cable with one end connected to the floating wind turbine, and the other end of the mooring cable is connected to an anchor point; the floating photovoltaic mooring system includes an upper mooring cable, a lower mooring cable, and a rigid rod. One end of the upper mooring cable is connected to the floating photovoltaic array, the other end of the upper mooring cable is connected to the rigid rod, one end of the lower mooring cable is connected to the rigid rod, and the other end of the lower mooring cable is connected to the anchor point. The present invention also discloses a design method for an offshore floating wind power and photovoltaic centralized mooring system. The present invention reduces the construction difficulty, improves the construction efficiency, enhances the side structure strength of the floating photovoltaic array, and increases the installed capacity of the floating offshore photovoltaic.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES CO LTD

Girder tie

A girder tie for connecting a building component to a rigid rod to resist uplift forces applied to the building component comprises a connector including a building component connector and a rigid rod connector coupled to the building component connector. The rigid rod connector attaches to the rigid rod. The building component connector includes first and second back flanges free of direct connection to one another. The first and second back flanges can each be attached to the building component. A washer is disposed between the rigid rod connector and a nut on the rigid rod that secures the rigid rod to the girder tie. The washer includes at least one back flange brace to inhibit the first and second back flanges from moving relative to one another when the building component experiences the uplift forces.
Owner:COLUMBIA INSURANCE CO

Continuous peeping structure and peeping method thereof

PendingCN120007365AMining devicesImage analysisDepth recordingMechanical engineering
The invention relates to the technical field of coal mining equipment, in particular to a continuous peeping structure and a peeping method thereof. The technical problems that when drilling is conducted under a coal mine in the prior art, a wire coil is seriously abraded, a rigid rod is peeped discontinuously, the peeping speed is unstable, the peeping depth is limited, the video stability is poor, and the labor intensity is large are frequently caused. According to the technical scheme, the continuous peeping structure comprises a rack, a photoelectric probe, a probe fixer, a wire coil, a flexible lifting rod, a groove, a clamping head, a driving assembly and a host; through continuous peeping of the drill hole, the peeping depth is increased; the abrasion of the wire coil is reduced through the groove structure; through the flexibility and supporting force balance design of the soft lifting rod, the stability of the video in the peeping process is ensured; and through automatic driving of the power mechanism and depth recording of the digital encoder, the labor intensity of operators is reduced.
Owner:ZHONG MEI (E ER DUO SI SHI) NENG YUAN KE JI YOU XIAN ZE REN GONG SI +1

Unmanned ship lake and reservoir vertical stratified sampling and in-situ water quality monitoring device and method

The invention discloses an unmanned ship lake and reservoir vertical stratified sampling and in-situ water quality monitoring device and method. The unmanned ship lake and reservoir vertical stratified sampling and in-situ water quality monitoring device comprises an unmanned ship platform, a reducing guide rod structure and a water sample in-situ collecting and monitoring device. The advantages of light weight, hardening, easy combination and the like of the variable-diameter guide rod are exerted, and the problems that a traditional soft rope is easy to swing, and a drift-diameter hard rod is large in size, insufficient in strength and the like are solved; aiming at the problems of easy breaking of a through rod, deviation of a monitoring point and the like caused by lake flow disturbance and the like in the traditional operation, a determination method of key parameters such as the number of segmented guide rod sections, a diameter critical threshold value and the diameter of the guide rod is determined by combining with the vertical flow velocity of the lake and the reservoir, and a basis is provided for stable and accurate operation; aiming at the problems of easy mixing (mixing with water samples in different layers and mixing with air in a bottle) and the like in traditional lake and reservoir vertical water sample in-situ collection, the invention provides a water sample layering in-situ collection device and method, anaerobic collection is realized through a double-pipe reverse replacement system, a method for determining the length difference delta L of an exhaust pipe and a water inlet pipe is defined, and equipment parameter support is provided for efficient and reliable collection.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Wingtip turning mechanism for morphing aircraft

The invention belongs to the technical field of morphing aircrafts, and discloses a connecting rod type mechanism for wing tip turning of a morphing aircraft. Comprising a double-four-rod symmetrical movement mechanism, a driving rod and a driving unit of the driving rod, wherein the double-four-rod symmetrical movement mechanism consists of a vertical rod, an inclined long rod and an inclined short rod, and two sides of the vertical rod are connected with wing ribs. Two or more connecting rod mechanism modules can be connected in parallel, and single drive is achieved through one rigid rod. The driving element transmits force to the vertical rod on the right side through the driving rod to achieve mechanism turning, and the rotation center is located on the outer side of all the movable mechanisms, so that upper and lower skins of a turning section of the wing are both pulled in the turning process, the skin wrinkling or swelling phenomenon is avoided, and the phenomenon that wingtip deformation and pneumatic discontinuity are easily solved.
Owner:DALIAN UNIV OF TECH

A drilling device for a mobile ground anchor

A drilling device for a mobile ground anchor comprises: a power source, a hydraulic control device, a power head connecting arm and a power head connected in sequence; the power head is connected to the ground anchor; the hydraulic control device is used to: drive the power head to output torque based on the energy provided by the power source to drill the ground anchor into the ground; the present invention can be widely used in the process of rigid rod ground anchor burying facilities, directly improving the safety and reliability of construction operations. It realizes hydraulically driven drilling of ground anchors, avoids manual screwing, and facilitates and quickly carries out transportation and transfer at the construction site, solving the construction difficulties of ground anchors in current wiring construction.
Owner:STEJT GRID ELEKTRIK PAUER INZHINIRING RISERCH INSTITYUT KO LTD +3

Device for connecting the lower leg of a skier to a ski binding, and footwear assembly incorporating said device

Device for connecting the lower leg of a skier, with a foot and an ankle axis, to a ski binding mounted on a ski board, comprising a footwear assembly, a tibial connection with at least one rigid rod, where the at least one rigid rod comprises an upper end securely attached to the lower leg, and a lower end which is pivoting with respect to the footwear assembly.
Owner:HF CONSULTING

A hinge-driven bistable wheel-leg conversion mechanism

The present invention relates to the technical field of robot compliant motion system design, and discloses a hinge-driven bistable wheel-leg conversion mechanism, comprising a bistable structure having two stable states: a wheel shape and a leg shape. The bistable structure comprises a frame and a first drive module. The frame comprises a plurality of spokes distributed in an array, a hinge and a pseudo-rigid rod are provided between the ends of two adjacent spokes, and the hinge is connected to the first drive module. The hinge bends and deforms under the positive action of the first drive module, and the bistable structure is converted from a wheel shape to a leg shape. When the first drive module stops acting, the hinge returns to its original state, and the bistable structure returns from a leg shape to a wheel shape. The stiffness of the pseudo-rigid rod is greater than the stiffness of the hinge. The present invention can undergo flexible deformation when encountering obstacles, thereby adapting to various unstructured terrain environments and having better buffering and energy absorption characteristics.
Owner:SOUTHEAST UNIV

Seat belt buckle attachment device

The invention relates to a fastening device (100) for a seat belt buckle (52), comprising: - a loop (110) including a clasp (112) adapted to receive said buckle, - a rigid stem (120), and - a sliding mounting system (101) for the clasp (112) along said stem, which is adapted to block said sliding when a tensile force (F1) exceeding a threshold is exerted on the clasp. According to the invention, the sliding mounting system comprises: - a sleeve (111) coupled to the clasp and housing the stem, - a means for coupling the sleeve to a seat base, - two clamping means (140) located on either side of the stem and movable between a clamping position of the stem and a rest position in which the stem can slide relative to the sleeve, and - means for returning the clamping means to the rest position. Figure for the abstract: Fig. 2
Owner:RENAULT SA

Extensible anchor rod based on three-dimensional concave polygonal structure

The application provides an extendable anchor rod based on a three-dimensional concave polygon structure, which comprises a rigid rod body and a three-dimensional polygon structure arranged on the outer side of the rigid rod body, the three-dimensional polygon structure comprises a plurality of fold line type anchor cables which are connected with each other; when the rock mass deforms and causes the rigid rod body to break, the three-dimensional polygon structure can extend along the direction of the rigid rod body, thereby achieving multi-section rock mass anchoring. The application can realize elastic anchoring of the multi-section rock mass along the radial direction of the rod body, and is suitable for surrounding rock anchoring under different stress and deformation conditions of the multi-section rock mass.
Owner:RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +1

Profile steel stacking adsorption equipment

The utility model discloses profile steel stacking adsorption equipment, which belongs to the field of profile steel stacking and comprises a working frame, a movable block slidably connected to the inner wall of the top of the working frame, a protective shell fixedly connected to the bottom of the movable block, two first connecting rods rotatably connected to the bottom of the protective shell, and second connecting rods rotatably connected to the other ends of the two first connecting rods. Third connecting rods are rotationally connected to the other ends of the two second connecting rods, fourth connecting rods are rotationally connected to the other ends of the two third connecting rods, a same connecting roller is rotationally connected between the two fourth connecting rods, and two long connecting rods are rotationally connected to the two sides of the connecting roller. The lifting device is reasonable in structural design, the long connecting rods, the short connecting rods, the first roller and the flat plate are matched, the lifting device can be achieved through the multiple connecting rods, and due to the fact that the connecting rods are composed of the rigid rod pieces and the hinges and are simple in structure, the manufacturing and maintaining cost of a user is lower, and the user can use the lifting device conveniently.
Owner:WUXI TONGHE MASCH CO LTD

A suspended roadbed structure and construction method

The application discloses a kind of overhanging roadbed structure and construction method, belong to high fill section deep soft soil roadbed engineering technical field.The roadbed structure includes pipe pile support structure, leveling layer, shear layer and pavement structure layer, the leveling layer and shear layer are both foam concrete pouring layer, the pipe pile contains one or more lengths, and can be spliced.The construction method includes that after pipe pile is implanted foundation, first rough leveling is carried out by pipe pile, then fine leveling is carried out by leveling layer, the leveling layer and shear layer are both poured and constructed by the working face of temporary platform, batten board construction and the formwork of rigid bar piece, the leveling layer, shear layer and reinforced layer are used to transmit structure dead load and live load to pile cap and pipe pile.The roadbed structure and construction method of the application do not need to cut pile, have excellent structure durability and are economical and practical.
Owner:ANHUI TRANSPORT CONSULTING & DESIGN INST

An environmentally friendly cellulose fiber-based composite material for shotcrete and a method for preparing the same

ActiveCN120817746BShotcreteFiber bundle
This invention relates to the field of concrete reinforcing fiber technology, and discloses an environmentally friendly cellulose fiber-based composite material for shotcrete and its preparation method. The composite material consists of twisted fiber bundles, locally cured rigid rod-shaped non-water-soluble resin, multi-directional raised short fibers attached to its surface, and an overall water-soluble resin layer. When this composite material is mixed into concrete, it initially enhances workability through uniform dispersion, and later, the dense fiber network promotes cement hydration, significantly improving the overall performance and durability of concrete. It is particularly suitable for shotcrete, improving the alkali resistance, durability, ease of mixing, uniform dispersion, and workability of cellulose fibers in concrete.
Owner:JIUQING PAINT SHANGHAI

Method for additive manufacturing of a 3D item by means of fused deposition modeling and additive manufacturing apparatus

The invention relates to a method and an apparatus (1) for additive manufacturing of a 3D item (2) by means of fused deposition modeling of a composite material, whereby the composite material is fed through a heated printer extruder head (4) and deposited on a printer bed (3) as a layer arrangement that form the 3D item (2). The composite material is provided as at least one rigid rod (10) that is conveyed out of a rod magazine (9) that is capable of storing at least one rigid rod (10). The rigid rod (10) is then conveyed through a guide tube (15) that is arranged within the printer extruder head (4), whereby the rigid rod (10) is heated during the conveyance through the guide tube (15), and whereby the heated and viscous composite material is discharged through a discharge nozzle (16) at one end of the guide tube (15) and deposited as the layer arrangement onto the printer bed (3) to generate the 3D item (2).
Owner:MERCK PATENT GMBH

A wind tunnel test device for simulating nonlinear vibration of bridge structures

The present application belongs to the technical field of bridge wind tunnel test device, and provides a kind of wind tunnel test device simulating nonlinear vibration of bridge structure, including rigid model, rigid rod, rigid circular arc suspension arm, linear tensile spring, nonlinear elastic element and light high-strength fine rope.Nonlinear elastic element can adopt cable structure, membrane structure, nonlinear tensile spring, mechanical super material or superstructure.By designing the nonlinear stiffness characteristics of nonlinear elastic element, the layout mode and the combination mode of linear tensile spring, various target nonlinear stiffness modes can be realized to carry out large amplitude vertical torsional coupled flutter test of bridge structure under nonlinear stiffness.In the process of large amplitude vibration of model, the center hanging point of nonlinear elastic element and linear tensile spring can always maintain vertical displacement and deformation, and the device can ensure stable stiffness, damping, mass and mass moment characteristics.
Owner:DALIAN UNIV OF TECH

Cupholder and Phone Mounting System for a Golf Bag

A cupholder and phone mounting system for use in a golf bag comprising a golf club compartment and golf bag legs. The system comprises a shaft sub-assembly comprising a rigid rod configured to be removably installed into the golf club compartment alongside clubs in that golf bag, and a cupholder part. The cupholder part comprises a slot configured to hold a camera phone at an angle configured to permit recording of a golf shot. A fastener slot forms an angle between the cupholder and the shaft subassembly when connected such that the cupholder remains approximately vertical while the rigid rod of the shaft sub-assembly is inserted into the golf club compartment of the golf bag and the golf bag is stood on the golf bag legs.
Owner:GRAMSE ENGINEERING LLC

Flexible mechanical arm

The flexible mechanical arm comprises a connecting arm, a driving device and a plurality of flexible units, each flexible unit comprises a rigid rod piece I and a rigid rod piece II, a plurality of rigid rod pieces I are arranged at intervals in the axial direction of the rigid rod piece II and form a plurality of rotating arms, the connecting arm is arranged on the rigid rod piece II in a running fit mode, and the connecting arm is arranged on the rigid rod piece II in a running fit mode. The adjacent flexible units are connected in series through the connecting arms, the driving devices are used for driving the rotating arms and the connecting arms to rotate up and down, flexible movement of the mechanical arm is achieved in the mode that the connecting arms, the driving devices and the multiple flexible units are controlled in a segmented mode, the complexity and the control method of the flexible mechanical arm structure are increased, and the flexibility of the structure is enhanced. Good flexibility can be obtained only through simple rope driving.
Owner:CHONGQING UNIV OF ARTS & SCI

DEVICE AND METHOD FOR MEASURING THE RATIO OF FORCE, VEHICLE AND POWER DURING MOTION IN IMMUNE-DEFENDED AND OVERLOADED CONDITIONS BY MEANS OF A HYDRAULIC SYSTEM WITH LIQUID CYLINDERS AND TRANSMISSION GEARS

Device for measuring the relationship between force, speed and power during locomotion in the unloaded and overloaded state, characterized in that it comprises a hydraulic system arranged to generate resistance (overload) for an athlete in motion using the device, wherein the hydraulic system comprises - two hydraulic fluid cylinders (29) each with a threaded piston rod (31) and a piston (30) connected to hydraulic fluid separators (26), wherein the said hydraulic fluid cylinders (29) are connected to a housing, - a housing in which a hydraulic fluid flows through a system of channels and the aforementioned hydraulic fluid cylinders (29) and separators (26), wherein the channels are provided with pressure adjusting elements (25, 34, 35, 37) arranged to define a constricted area of ​​the channel system, wherein the pressure adjusting element (25) is used to regulate the repulsive force generated by the hydraulic system, - two opposing hydraulic transmission gears (32) connected to the piston rod (31), and a main transmission gear (33) connected to a rope cylinder (6), wherein when the rope cylinder (6) rotates, the main transmission gear (33) rotates the hydraulic transmission gears (32), thereby generating a flow of fluid in the hydraulic system, - an adjustment mechanism for adjusting the magnitude of the repulsive force, wherein the adjustment mechanism includes inside a channel that accommodates a rigid rod (34) arranged to press on a spring (37) to increase or decrease the repulsive force generated by the hydraulic system by influencing the force required to move the hydraulic fluid through the system, - a hydraulic pressure sensor (2) which is appropriately attached to the housing of the hydraulic system and which makes it possible to provide quantitative information about the pressure in the hydraulic system.
Owner:UNIVERZA NA PRIMORSKEM UNIVERSITÀ DEL LITORALE

Hammer type pile foundation horizontal bearing capacity testing device and method

The invention relates to a hammer type pile foundation horizontal bearing capacity testing device and method, and aims to provide a simple, accurate and economical solution for testing the ocean pile foundation horizontal bearing capacity. The device is connected with the pile foundation through the hammer ball, horizontal load application is achieved, and the bearing capacity of the pile foundation under different horizontal loads is measured. The device mainly comprises a weight throw, a rigid rod, a driving device, a displacement and tension measuring device and a control system. The weight ball is connected with the pile foundation, the weight ball moves around the pile through the driving device to generate horizontal force, and the movement direction and the load of the weight ball are controlled; the displacement and tension measuring device monitors the horizontal displacement and the horizontal force of the pile foundation in real time, and the control system adjusts the load according to feedback data and records test information. According to the testing method, the horizontal bearing capacity of the pile foundation in the marine environment is simulated by accurately controlling the motion path and the load of the hammer, the stability and the bearing performance of the pile foundation are effectively evaluated, and the testing method is suitable for ocean engineering pile foundation performance detection.
Owner:SOUTHEAST UNIV

Large-angle five-degree-of-freedom hybrid robot

The present invention relates to the field of robotics, and in particular to a large-angle five-degree-of-freedom hybrid robot, comprising a frame; a static platform disposed on the frame; a fixed platform disposed on the frame; a dynamic platform disposed between the static platform and the fixed platform; a support column disposed between the static platform and the fixed platform; a terminal swing head disposed on the dynamic platform; a linear drive module disposed on the support column; a linear drive module disposed on the static platform; a rope module disposed on the static platform, the movable end of the rope module being connected to the terminal swing head; an articulated assembly, one end of which is connected to the movable end of the linear drive module and the other end is connected to the dynamic platform; and an end effector disposed on the dynamic platform. The large-angle five-degree-of-freedom hybrid robot of the present invention utilizes a rope module to replace a portion of the rigid rods, effectively reducing the robot's own weight and inertia, and facilitating simplified control. The use of a pair of flexible ropes with consistent rope lengths realizes two rotational degrees of freedom of the terminal swing head, and the rotation angle is much larger than that of traditional robots. It has good application prospects in the fields of sorting and assembly.
Owner:CHANGZHOU UNIV

A Tuned Fluid Mass-Damper Nonlinear System Based on Orthogonal Transformation Enhancement

The present invention relates to a tuned liquid mass-damping nonlinear system based on orthogonal conversion for efficiency enhancement. The system includes a tuned liquid efficiency-enhancing liquid damper box, a main structure, and an orthogonal motion conversion mechanism. The lower part and the interior of the tuned liquid efficiency-enhancing liquid damper box are respectively provided with an orthogonal motion conversion mechanism. The orthogonal motion conversion mechanism at the lower part of the tuned liquid efficiency-enhancing liquid damper box is respectively connected to the tuned liquid efficiency-enhancing liquid damper box and the main structure. The orthogonal motion conversion mechanism inside the tuned liquid efficiency-enhancing liquid damper box is connected to the orthogonal motion conversion mechanism at the lower part of the tuned liquid efficiency-enhancing liquid damper box. The orthogonal motion conversion mechanism inside the tuned liquid efficiency-enhancing liquid damper box is connected to the box body of the tuned liquid efficiency-enhancing liquid damper box and is connected to the grille plate. The orthogonal motion conversion mechanism includes rigid rods connected to each other, and the connecting ends of the rigid rods are hinged. Compared with the prior art, the present invention enhances the liquid mass and damping effect, which is beneficial to achieving efficient vibration control of the structure.
Owner:TONGJI UNIV

Hard rod extension type endoscopic device

The utility model belongs to the technical field of industrial equipment, and particularly relates to a hard rod extension type endoscopic device which comprises an installation rod, a moving assembly, a rotating assembly and a detection lens. The rotating assembly is arranged at the output end of the moving assembly; the detection lens is arranged at the output end of the rotating assembly; wherein the moving end of the moving assembly slides to a preset position along the length direction of the mounting rod, and the rotating assembly drives the detection lens to circumferentially rotate at the preset position. A hard rod is adopted as a supporting structure, multi-axis adjustment can be achieved when deep well structure detection is carried out, the interior of a shaft can be detected from multiple angles, practicability is greatly improved, and product competitiveness can be improved.
Owner:DONGGUAN XINYE AUTOMATION TECH CO LTD