12 results about "Axial rigidity" patented technology

This invention relates to a production line collaborative control method for a high-speed stamping sheet metal robot. The robot includes a lifting device, a swinging device, a guide sleeve assembly, a forearm link, and an end effector, and the lifting, swinging, sleeve rotation, and end effector linear motion are controlled by a drive unit. This configuration simplifies the structure and improves axial stiffness and response speed by combining single-sided active drive with end effector direct drive, achieving high-speed and stable sheet metal handling. The corresponding whole-line collaborative control method establishes a geometric envelope model for the equipment and performs collision interference judgment based on the model. It utilizes multiple strategies such as phase delay, speed adaptation, and trajectory optimization for chain-like coordinated planning, systematically eliminating equipment interference risks and maximizing the overall production cycle time while ensuring safety. This invention solves the collaborative problems of jitter, interference, and cycle time bottlenecks in high-speed stamping, significantly improving the efficiency, reliability, and intelligence level of the production line.

The application discloses a full magnetic suspension system based on bidirectional active axial force of a rotor and a control method thereof. The full magnetic suspension system is provided with an axial force winding 3, and a magnetic field rotating synchronously with the rotor generated on the winding can generate stable axial forces in two directions of attraction and repulsion to compensate for axial hydraulic force. The size and direction of the active axial force generated on the rotor can be actively controlled through the current on the axial force winding 3. The active Maxwell force and the Lorentz force in the axial direction are active suspension forces, and together with passive magnetic resistance force, form a composite axial suspension force. The application can effectively improve the axial stiffness by increasing the active axial force. The control method provided by the application can make the axial force of the rotor have good dynamic response speed, and has better anti-interference ability compared with passive suspension. The active axial electromagnetic suspension system greatly improves the stability performance of the magnetic suspension pump in the axial direction.

This invention provides a vibration isolator suitable for a satellite momentum wheel vibration isolation support, comprising a first retaining block (2a), a connecting block (3), and a second retaining block (2b) arranged sequentially; it also includes two symmetrically arranged first elastic components (1a) connected between the first retaining block (2a) and the connecting block (3), and two symmetrically arranged second elastic components (1b) connected between the connecting block (3) and the second retaining block (2b); damping energy dissipation materials (5) are respectively provided between the symmetrically arranged first elastic components (1a) and between the symmetrically arranged second elastic components (1b). This invention has low lateral stiffness, high axial stiffness, and large damping characteristics. By reasonably arranging and installing it between the support and the momentum wheel, it can effectively meet the vibration isolation requirements of the momentum wheel; this invention has advantages such as simple and compact structure, convenient processing and assembly, high design freedom, stable and reliable performance, light weight, and low cost.

This invention relates to a paper-inspired bionic dual-segment flexible continuous robotic arm. The robotic arm employs a paper-inspired bionic dual-segment composite main structure design, with a one-piece molded flexible main body as its core. The elastic deformation of flexible hinges simulates the crease movement of paper folds, and combined with non-vector visual servo control, it uses line drive to achieve bending and precise positioning in confined spaces. This robotic arm is integrally molded using 3D printing technology, eliminating the mechanical gaps and connection failure risks associated with traditional assembly. Furthermore, it adopts an axial stiffness gradient design, offering advantages in high dexterity, high stability, and compact structure in confined space operations such as minimally invasive surgery and precision procedures.

This utility model relates to the field of sealing ring technology and discloses a sealing ring with a flexible skeleton. It uses a flexible, deformable material to replace the traditional metal skeleton structure. The flexible pressure ring and the rubber sealing ring are integrally vulcanized, which is not only easy to process and low in cost, but also has good compatibility with rubber, higher bonding strength, no cracking, and is easy to install and maintain. Furthermore, the flexible pressure ring combines rigidity with its deformable structural characteristics. During installation, the flexible pressure ring can deform to perfectly adapt to and fit the groove structure. Compared with the traditional metal skeleton, it has higher installation sealing performance, contact stability, and service life. The outer diameter of the flexible skeleton is larger than the groove, optimizing the problem of volume slippage in open grooves. An internal support is provided inside the flexible pressure ring. The internal support further improves the axial rigidity support force of the flexible pressure ring, ensuring the contact support stability of the axial side of the sealing ring end, and improving the sealing performance of the sealing ring.

The application belongs to the technical field of bridge structure health monitoring, and discloses a suspension bridge structure system identification method based on observability and state estimation and a high-efficiency algorithm thereof; aiming at different component characteristics of the suspension bridge, the identifiable problem of the unit parameters is converted into the solvable problem of the mathematical equation by establishing the observability state equation of the suspension bridge, and the Jacobian matrix is constructed in combination with the high-efficiency algorithm (OM-SE) of state estimation to realize the explicit mapping between the measured data and the state variables, and the precision and the calculation efficiency of the parameter identification are improved. The whole stiffness matrix is established by the parabolic main cable unit, the Euler-Bernoulli beam unit and the direct stiffness method, the parameter inversion is carried out by using the double-layer iteration process, the method is suitable for the identification of the bending stiffness of the main beam and the axial stiffness of the cable of the long-span suspension bridge, and has been verified by the scale model test and the actual suspension bridge numerical case, the identification error is controlled within 5%, and the calculation efficiency is improved by more than 70%.

A method that includes determining flange parameters of a first flange and a second flange, determining a bolt system-typical elongation behavior, determining an axial stiffness for at least one bolt and determining an axial stiffness of a flange body formed by applying an installation pre-tensioning force to the bolt to mechanically connect the first flange and the second flange to each other. The method further includes analyzing the flange body for maximally permissible gap dimensions, determining an overall stiffness of the flange body, introducing a bolt system into a corresponding first flange recess and a corresponding second flange recess that are aligned with each other, determining a reached overall stiffness of the flange body, comparing the reached overall stiffness to the overall stiffness, and tightening the nut of the bolt system with an installation tensioning force when the reached overall stiffness is larger than or equal to the overall stiffness.

The utility model discloses a kind of swing arm bushing of improving axial rigidity, limiting and anti-friction, it is related to the technical field of automobile parts, including bushing main body and the first limiting assembly and the second limiting assembly installed in the both ends of bushing main body;Bushing main body is composed of outer sleeve, second natural rubber, middle sleeve and inner sleeve;Second natural rubber is filled in the annular gap between outer sleeve, middle sleeve and inner sleeve;The first limiting assembly is composed of first assembly gasket, first natural rubber, first support gasket and first assembly framework;First natural rubber is filled in the annular gap between first assembly gasket, first support gasket, first assembly framework, and filling thickness is thinner;The utility model is filled in the annular gap between first assembly gasket, first support gasket, first assembly framework by first natural rubber, then through vulcanization process formation molecular level combination, no physical gap;The axial rigidity and axial limiting of bushing are improved.

The application discloses a kind of based on stirling cryogenic machine motor rotor mechanical performance design method, it is related to stirling cryogenic machine technical field, design method includes: S1, first obtain the operating frequency of stirling cryogenic machine;S2, establish rotor system axial dynamics model;S3, define as single degree of freedom mass stiffness system in axial movement of rotor system, and calculate current single degree of freedom mass stiffness system inherent frequency;S4, carry out counterweight mass design and / or waveform spring axial stiffness adjustment;S5, verify whether new single degree of freedom mass stiffness system inherent frequency avoids excitation band;S6, then determine final counterweight mass and waveform spring stiffness design value.The influence of counterweight on rotor axial movement and the resonance problem of rotor system axial movement and cryogenic machine operating frequency are comprehensively considered, and the abnormal vibration and noise caused by these factors can be effectively avoided by the design method, and the operating stability of the cryogenic machine is significantly improved.

The invention relates to a method (101) for measuring the axial stiffness modulus (E11) of a test specimen, obtained by machining a ceramic matrix composite plate along a plane (P). The method (101) comprises measuring (103) the resonance frequency (f1e) of the test specimen and determining (105) the axial stiffness modulus (E11) from the resonance frequency (f1e) of the test specimen, a coefficient (K1e) obtained from a numerical simulation of the vibrational behavior of a reference specimen, and a density (d) of the test specimen. Figure 1

This invention provides a static analysis method for multi-point mooring systems based on the elastic catenary theory. This method introduces the axial stiffness of the mooring cables to elastically correct the classical catenary equation, establishing an accurate mechanical model considering the elastic deformation of materials. The displacement of the buoy's center of gravity is calculated using spatial coordinate transformation to obtain new coordinates for each mooring point, which are then transformed to the local coordinate system of each mooring cable to obtain geometric parameters. The elastic catenary equation is solved in the local coordinate system to obtain the tension at the top of each cable, and then transformed to the global coordinate system. The tension of each mooring cable is equivalent to a six-degree-of-freedom force acting on the buoy's center of gravity, and the total restoring force of the mooring system is obtained through vector superposition, establishing the system's static equilibrium equation. This equilibrium equation is solved using a numerical optimization algorithm to obtain the static equilibrium position of the buoy. This invention effectively improves the accuracy of static analysis of mooring systems, the system coupling analysis capability, and the applicability and robustness of the method.

The utility model relates to a technical field of chemical equipment, concretely relates to a fiber winding glass steel equipment with rigidity reinforcing structure, including jar body main part, the middle part outside of jar body main part is equipped with first support ring and second support ring, first support ring is located the top of second support ring, it is equipped with a plurality of reinforcing plate with jar body main part is at the circumference equidistance between first support ring and second support ring, be equipped with corrugated board between every two reinforcing plate, corrugated board is located between reinforcing plate, and the plane stress is converted into three -dimensional bending stiffness with corrugated structure, and the radial stress of jar body is dispersed through self structure, and the rigid reinforcing band that surrounds jar body middle part is formed with reinforcing plate cooperation, makes up the defect that the fibre layer is thin in jar body middle part, and axial rigidity is insufficient, solves the problem that the rigidity of insufficient in the middle of existing equipment, significantly improves the bending -resistant, anti -axial deformation ability of jar body middle part, reduces the deformation such as bulging, bending due to long -term use, reduces the risk of leakage or burst.