12results about How to "Strong rigidity" patented technology

The utility model relates to the technical field of motor shells, in particular to a commercial vehicle electric drive axle reducer and motor common shell assembly which comprises a common shell body. The speed reducer cavity and the motor cavity are respectively arranged in the common shell body, the corresponding speed reducer and the motor are installed in the common shell body and are fixed by being screwed on the motor end cover and rotor assembly installation surface and the speed reducer cover assembly installation surface through the bolts, so that the speed reducer and the motor share one shell; the side portion of the motor shell is integrated with the axle housing installation face, the axle housing installation face is further provided with the gear ring support and the output shaft bearing cover, so that a transmission output piece of the speed reducer is located on the same shell, the whole shell is integrated, and compared with an existing shell, the motor shell and the speed reducer shell are split, part mold pieces are relatively reduced, and cost is reduced. And the manufacturing process is simpler, the integration degree is high, the rigidity is higher, and the phenomenon of shaking or breakage is not prone to occurring even under the severe working condition.

This invention provides a directional underwater acoustic sensor based on an asymmetric structure and its directional calculation method, relating to the fields of biomimetic underwater acoustic sensing and microelectromechanical systems (MEMS). The sensor comprises: a biomimetic nerve fiber strut with its top end fixed to the sound pressure-sensitive region of a waterproof asymmetric elliptical tympanic membrane, and its bottom end connected to the outer reflective film of a fully sealed fiber optic Fabry-Perot interferometer cavity; based on the mechanical vibration generated by the waterproof asymmetric elliptical tympanic membrane under the excitation of water sound pressure, the vibration is transmitted axially through the biomimetic nerve fiber strut, resulting in the synchronous displacement of the outer reflective film, thereby changing the physical cavity length of the fully sealed fiber optic Fabry-Perot interferometer cavity. This invention solves the technical bottleneck of traditional multi-node arrays in miniaturized scenarios by integrating the monoauricular directional mechanism of the giant wax moth with a miniature fiber optic hydrophone architecture.

The application discloses a kind of stiffness optimization-based dual-arm robot vibration suppression control method, utilize Jacobian matrix to map joint stiffness to end Cartesian space, based on dual-arm robot structure parameter and joint flexible characteristics design joint space dual-arm stiffness evaluation function, with each joint angle of dual-arm robot as optimization variable, construct the objective function by stiffness optimization parameter and end pose error jointly constitute.For simultaneously meet dual-arm end pose constraint, joint motion range constraint and collaborative operation constraint condition, improve control performance, propose heuristic optimization method based on opposite solution structure, that is, in the process of population initialization and optimization, opposite solution sample is generated specifically, while effectively avoiding falling into local optimal value, obtain joint angle trajectory with good stiffness index and strong vibration suppression performance.Finally, the generated joint angle is used for trajectory planning and control, realize the vibration amplitude reduction and system stability improvement of dual-arm robot in the process of operation.

A large-diameter tension-compression decoupling fusion type linear separation device is composed of a separation ring, an inner support protective cover, a detonator seat, an energy-gathering cutting cable assembly, a connecting fastener and a detonator, the protective cover is internally provided with the energy-gathering cutting cable, after the detonation energy is transmitted to the main charge of the cutting cable through the transmission assembly of the detonator, the shaped charge is driven by the detonation wave to form a metal jet to cut and separate the separation ring, the high-level load transmitted by the projectile body is tension-compression decoupled through the tolerance control of the separation ring and the inner support protective cover, and a large-diameter tension-compression decoupling fusion type linear separation device is given, which has the advantages of simple structure, reliable separation performance, high bearing capacity, large connection stiffness, light weight, convenient installation and the like.

The utility model discloses a steel structure building with integrated decoration module, including steel structure frame main part and the integrated module of setting in steel structure frame main part, steel structure frame main part is set up to make its bottom to be in the air, and the steel structure frame main part all is provided with open hole around, bottom and top, the bottom support steel beam of integrated module bottom is provided with being suitable for with steel structure frame main part connection, and the placing groove of being suitable for placing electromechanical system is set up on integrated module. It is convenient to install integrated module in steel structure frame main part through open hole, makes the installation not be restricted, and also can install from the side or bottom after steel structure frame main part is capped, has reduced the installation difficulty. Through placing groove, can install electromechanical system directly before decoration, only needs to connect the pipeline on electromechanical system with the power supply on the scene after entering the scene, need not carry out the opening and installation of electromechanical system in the construction site, has saved the massive construction procedure and manual labor of on -the -spot electromechanical installation.

This invention discloses an extendable four-degree-of-freedom underwater camera bracket and an underwater vehicle, including a base, a telescopic arm, a horizontal turntable, and a pitch mount. The base is fixed to an external underwater vehicle. One end of the telescopic arm is detachably fixed to the base. The telescopic arm has multiple mounting positions on the base, each corresponding to a horizontal angle between the telescopic arm and the underwater vehicle. The telescopic arm's length can be adjusted as needed. The horizontal turntable is detachably fixed to the other end of the telescopic arm. The pitch mount is fixed to the horizontal turntable, and the underwater camera is fixed to the pitch mount, which adjusts the camera's pitch angle. Multiple mounting positions are provided between the horizontal turntable and the telescopic arm, each corresponding to a horizontal angle between the telescopic arm and the camera. This design meets the needs of underwater applications, featuring a long underwater service life, deep operating depth, high rigidity to suppress camera shake, and flexible adjustment.

The application belongs to the technical field of robots, and discloses a scalable amphibious robot driven by a paddle wheel, which comprises a shell, four wheel shafts rotatably connected to the shell and distributed on the left and right sides of the shell, four independent driving mechanisms arranged in the shell, four driving mechanisms connected with the four wheel shafts to drive the wheels to rotate independently, a scalable paddle wheel mechanism contained in the wheel mechanism, the scalable paddle wheel comprising a wheel, an independent small wheel body, a plurality of paddle plates and a scalable mechanism; the scalable mechanism is used for the expansion and contraction of the paddle plates of the paddle wheel, so that the paddle plates of the paddle wheel can be retracted into the wheel and form an integral whole with the wheel, or be expanded into a paddle wheel mechanism and be used for rowing. The single power driving system is combined with the scalable paddle wheel structure, so that the rigidity and flexibility of the hub are ensured when the amphibious robot runs on land, and the energy utilization efficiency is improved when the amphibious robot sails on water.

The application relates to a magnetic fluid permanent magnetic hybrid bearing, which is mainly characterized in that magnetic fluid is added in a bearing gap, a permanent magnet is installed on a bearing rotating shaft, a controllable magnetic circuit is generated by controlling a coil through a power electronic circuit, the permanent magnet on the bearing rotating shaft is attracted, and the rotating shaft is suspended and rotates in a bearing inner cavity. The application also optimizes a control method of the hybrid bearing, improves effective stiffness and damping of high-frequency oscillation outside a controller bandwidth, and improves dynamic performance of the hybrid bearing. Meanwhile, the application solves the problems of high power consumption and high-frequency mode control of a traditional magnetic bearing through a magnetic fluid and permanent magnetic hybrid control scheme, and has good bearing capacity and dynamic performance.

This invention relates to ceiling fans, and more particularly to an industrial ceiling fan. The industrial ceiling fan blade assembly has a tail fin at its tail end, and one side of the blade body has a streamlined cavity with reinforcing ribs. The blade head is held by upper and lower stress plates, and a blade safety component is located within the cavity. The upper and lower stress plates and the blade safety component are fixed together by a set of through bolts. A spacer is also provided between the upper and lower stress plates, and this spacer is fixed by countersunk screws inserted through the upper stress plate. This invention is an externally clamped insert type, resulting in low equivalent stress levels at various points on the blade; the blade is thin and lightweight, with a small load; the insert structure is composed of sheet metal parts, resulting in lower cost.

The application discloses a sheath tube, a guide sheath, a guide sheath assembly and an endoscope kit, and relates to the technical field of medical devices. The sheath tube disclosed by the application is used for a guide sheath, and the sheath tube comprises an inner liner tube and an outer covering skin, and the outer covering skin is sleeved on the outer periphery of the inner liner tube, wherein: the outer covering skin comprises a first outer covering section and a second outer covering section, the first outer covering section is arranged on one side of the second outer covering section close to the distal end of the inner liner tube, and the rigidity of the first outer covering section is smaller than the rigidity of the second outer covering section. The above scheme can at least solve the problem that the guide sheath placement operation is blocked.

This invention provides a movable lens assembly, an optical element system, and a photolithography system. The first and second lens mounts within the movable lens assembly each include a support assembly, a drive assembly, and a transmission assembly. Both the support and transmission assemblies are equipped with ventilation structures to form a drive gas film, a support gas film, and a centering gas film. Based on the principle of air static pressure, each gas film possesses high rigidity, which not only improves the impact resistance of the movable lens assembly but also enables positional adjustment of the lens structure, improving image quality. Because the centering gas film in the first lens mount is annular and the centering gas film in the second lens mount is spherical, the first lens mount can achieve vertical position adjustment, and the second lens mount can achieve horizontal rotational adjustment. Furthermore, the combination of the first and second lens mounts allows for three degrees of freedom adjustment. In addition, by forming gas films within each contact surface, this invention makes the movable lens assembly operate near-zero wear, effectively mitigating the problem of frictional particle contamination of the lens.