1091 results about "Ball joint" patented technology

The invention relates to the technical field of concrete defect identification, and discloses a concrete defect state identification and passive detection combined control method under a super-tonnage block type spherical hinge, which is used for solving the problem that defect prediction cannot be realized during concrete defect identification, and comprises the following steps: setting sampling points in a concrete structure in a layered manner, acquiring strain monitoring data of each sampling point, judging whether the sampling points have defects or not, if so, performing grouting repair intervention treatment, if not, acquiring risk parameters of concrete defects, and evaluating according to the risk parameters to obtain defect risk indexes; whether the sampling points have the risk of concrete defects or not is judged, if the sampling points have the risk of concrete defects, early warning and vibration equipment parameter adjustment are carried out on the sampling points according to the defect risk indexes, the structure quality safety and the construction efficiency are effectively improved, and the engineering field intelligent management and control degree is improved.

The invention discloses a multifunctional cutting base and a cutting method for a large fan casting, and relates to the technical field of casting cutting machining.The base comprises a self-adaptive supporting platform, a combined type damping assembly, a vibration control unit and a chip and oil mist recycling unit; the self-adaptive supporting platform is attached to the bottom of a casting through a plurality of spherical hinge universal planes with angles and heights adjusted hydraulically to form a profiling supporting face so as to achieve multi-point self-adaptive clamping. The combined type damping assembly conducts damping adjustment along with machining vibration dynamic response through the damping unit in cooperation with the vibration control unit, and the machining posture of the casting is stabilized. The cuttings and oil mist recovery unit is used for synchronously collecting and separating dust, metal cuttings and cooling oil liquid generated in the turning process through a liquid-solid separation module, a dust hood with a negative pressure suction function and a chip removal channel; the clamping stability and the machining precision of the large casting are effectively improved, the machining site environment is improved, and the problem that an existing large casting machining platform affects the casting machining state is solved.

The double-step high-performance sealed viscous damping wall comprises a viscous damper and steel frames installed at the two ends of the viscous damper, the outer sides of the steel frames are fixedly connected with lug plates, embedded parts are arranged on the side walls of the lug plates, and the two ends of the viscous damper are hinged to the steel frames through gapless spherical hinges; the viscous damper comprises an oil cylinder, a piston and a piston rod, and the oil cylinder is filled with damping liquid; a variable cross-section structure is arranged on the inner wall of the oil cylinder, so that the middle circulation cross section is larger than the cross sections at two ends, and intelligent grading regulation of damping force along with piston displacement is realized; the invention belongs to the technical field of civil engineering damping walls, and achieves the technical effects that the groove is machined in the middle of the oil cylinder, a double-step energy dissipation mechanism is constructed, when a piston moves in the range of the groove, silicone oil can flow through double channels of the enlarged radial gap and the communicating hole, the piston moves to break through the boundary of the groove due to an earthquake, and the damping effect is achieved. And the gap between the piston and the oil cylinder is compressed instantly, so that the comfort under small earthquakes is guaranteed, and high-efficiency dissipation of pulse energy during large earthquakes is ensured.

The invention discloses a drag suction dredger rainbow blowing adjustable nozzle assembly and a bow spraying device and method, and belongs to the technical field of bow spraying. A rainbow blowing adjustable nozzle assembly of a trailing suction dredger comprises a nozzle part and a ball joint part used for connecting the nozzle part and a bow spraying pipeline on the dredger, and the ball joint part comprises a lower supporting frame, a lower supporting frame, a lower supporting frame, an upper supporting frame and a lower supporting frame, and one end of the lower supporting frame is connected with the bow spraying pipeline through a first flange; the upper supporting frame is fixedly connected to one side of the lower supporting frame, and a spherical groove is defined by the upper supporting frame and the lower supporting frame; the movable ball pipe comprises a reducer pipe and a ball body which are fixedly connected, the ball body is movably connected into the spherical groove, and the end, away from the ball body, of the reducer pipe is connected with the nozzle part through a second flange; by dynamically adjusting the spraying range of the nozzles, the slurry drop point can be flexibly changed, the effective operation range is remarkably expanded, drop point distribution is accurately controlled, the unevenness of the surface of a hydraulic reclamation area is effectively avoided, the flatness quality requirement is met, frequent ship displacement needed by drop point adjustment is reduced, and the construction efficiency is greatly improved.

The invention discloses a spherical pair locking mechanism and a medical instrument, and relates to the field of medical instruments. The ball pair locking mechanism comprises a ball joint and a locking assembly. The locking assembly comprises a transmission structure, an elastic piece, a locking gear and a force application driving piece. The rigid meshing locking mode of the locking gear and the meshing tooth edge of the inner ball head replaces traditional friction braking, locking force reduction and looseness caused by long-term use and abrasion can be avoided, the locking reliability is greatly improved, and the minimally invasive surgery positioning precision is guaranteed; a user can directly drive the transmission structure through the force application driving part to achieve switching between locking and unlocking of the ball joint, the mechanism is kept in a preset locking or unlocking state in a non-operation state by adjusting the locking gear and the meshing tooth edge and providing automatic reset force through the elastic part, manual intervention is reduced, and the rapid operation requirement of an operation scene is met. The mechanism is compact in structural layout, can adapt to the limited space of minimally invasive surgical instruments, and meets the requirements for locking strength and miniaturization.

The full-drive dexterous hand comprises a palm mechanism, a thumb mechanism and a finger mechanism, the thumb mechanism comprises a metacarpal bone, a thumb near knuckle and a thumb far knuckle which are sequentially distributed, the metacarpal bone obtains bending and rolling freedom degrees through gear transmission, and the thumb near knuckle and the thumb far knuckle both obtain bending freedom degrees through motor direct drive; the finger mechanism comprises a finger near knuckle, a finger middle knuckle and a finger far knuckle which are sequentially distributed, the finger near knuckle obtains bending and side-sway freedom degrees through gear transmission, and the finger middle knuckle and the finger far knuckle obtain bending freedom degrees through motor direct drive. A full-drive humanoid manipulator framework is adopted, high-precision motion mapping is achieved through 20 independent controllable degrees of freedom, the bionic core is that the ball joint design is adopted, the composite motion capacity of human fingers is highly simulated, fine actions such as grabbing, kneading and rotating of a human hand can be accurately reproduced, and the flexibility degree of the human hand is deeply restored.

The invention discloses a bidirectional sealing automobile spherical hinge assembly, and relates to the field of automobile spherical hinges, the bidirectional sealing automobile spherical hinge assembly comprises a ball pin column and a ball pin sleeve, the ball pin column is rotatably connected with the ball pin sleeve, the outer side of the connecting position of the ball pin column and the ball pin sleeve is sleeved with a rubber sleeve, the outer side of the bottom end of the rubber sleeve is connected with a threaded ring, and the top end of the rubber sleeve is connected with an upper sleeve; a plurality of sets of sealing rings are arranged at the top end of the upper sleeve, and the outer wall of the ball pin sleeve is in threaded connection with a locking ring. Through the arrangement of the rubber sleeve, the locking ring and the top disc, in the using process, firstly, the rubber sleeve needs to be connected to the outer side of the ball pin column in a sleeving mode, then the locking ring is rotated to fix and limit the bottom end of the rubber sleeve, then the outer side of the bottom end of the rubber sleeve is fixed and limited through the locking ring, and the top disc is fixed to the outer side of the ball pin column; and the top end of the rubber sleeve is further sealed by inserting the clamping ring into the sealing ring, so that the sealing effect is improved.

The invention relates to a robot ball joint singularity avoidance method based on damping factor analytic expression. The method comprises the following operation steps that a pose difference calculation module calculates the rotation matrix variable quantity of an end effector of a robot in real time; the self-adaptive Jacobian matrix construction module is used for a damping factor dynamic adjustment mechanism based on SVD (Singular Value Decomposition) analysis; the joint space updating module is used for realizing smooth updating of a joint angle through optimized inverse kinematics solution; through a theoretically guided damping adjustment mechanism, precision-continuity-efficiency triple optimization of singularity avoidance of the ball joint of the robot is realized for the first time, and a universal solution is provided for high-precision robot control.

A dust boot having an open end that includes an embedded mechanical fastener that secures the boot to a ball joint assembly and a ball joint assembly configured to engage with the embedded mechanical fastener.

The invention discloses a compact five-degree-of-freedom teleoperation hand of a series-parallel structure and a control mapping method of the compact five-degree-of-freedom teleoperation hand. The teleoperation hand comprises a base, a wire guiding device, a fixing sleeve, a rotary encoder, a driving arm, a spherical hinge butt joint device, a driven arm, a torsional spring, a movable platform, a front-end operation series connection platform and two angular displacement sensors. The rotary encoder is fixed to the wire guiding device through the fixing sleeve and used for measuring the rotation angle of the driving arm in real time. One end of the driving arm is fixedly connected with a rotor of the rotary encoder, and the other end of the driving arm is hinged with one end of the driven arm; the other end of the driven arm is hinged to the movable platform, and the two angular displacement sensors are used for measuring the pitch angle and the yaw angle of a handle of the front-end operation series platform. The front-end operation series platform is hinged to the movable platform and used for adjusting the posture of the teleoperation hand. The device is simple and compact in structure, low in cost and small in size; through combination of series connection and parallel connection, the rigidity requirement is guaranteed, and meanwhile the flexibility of the device is guaranteed.

A vehicle including a frame; a front left suspension assembly with a front left wheel; a front right suspension assembly with a front right wheel; a front gear train; a motor; shafts connected between the front wheels and the front gear train. Each front suspension assembly including a knuckle including: a first portion connected to a wheel hub and including a first ball joint, and a second portion extending upward from the first portion and including a second ball joint; a lower A-arm connected to the first ball joint; an upper A-arm connected to the second ball joint; the second ball joint being distanced from the wheel axis by a distance greater than the inner rim radius; and a shock assembly connected to the lower A-arm and the frame, the shafts passing below the ball joint of the shock absorber assembly which is vertically higher than the shaft.

A front engine attachment system for an engine having an engine pylon with a nose having a main female clevis and a cylindrical housing, a main rod fastened to the engine by a secondary ball joint connection about a secondary axis, a main shaft realizing a main ball joint connection of the main rod in the main female clevis about a main axis, wherein the main axis and the secondary axis are in the same vertical plane, a hollow outer cylinder with a vertical axis, of which a first end is fastened in the cylindrical housing and of which a second end is mounted so as to be able to move, via an annular linear connection, with respect to the front casing and an inner cylinder threaded and fastened in the outer cylinder.

The invention relates to the technical field of robot control, in particular to a motion control method and device of a parallel 3RRS robot, the parallel 3RRS robot and a medium, and the robot comprises a base platform, a movable platform and three RRS branch chains connecting the base platform and the movable platform. The method comprises the following steps: acquiring target attitude information and target position information of a mobile platform; based on the structure parameters of the RRS branch chain in the zero position state, the target attitude information and the target position information, calculating the center coordinate of a first plane figure formed by the center of the spherical hinge joint of the movable platform; calculating the center coordinate of the spherical hinge joint; projecting the central coordinate of the spherical hinge joint into a second plane figure determined by the first connecting rod of the corresponding branch chain and the Z axis of the coordinate system of the base; solving a target rotation angle of each first rotation joint based on the projection point coordinates; and finally, all joints are driven to enable the movable platform to move to the target pose. Complex space problems are converted into plane geometry solution, so that calculation is simple, and high-precision and high-efficiency real-time control is facilitated.

The utility model discloses a hanging mechanism of a gearbox of a motor train unit, and relates to the technical field of railway vehicles, the hanging mechanism comprises a hanging rod assembly which comprises a hanging rod body, and spherical hinge mounting through holes are formed in the two ends of the hanging rod body; the pair of spherical hinge assemblies are rotatably arranged in the spherical hinge mounting through holes respectively; each spherical hinge assembly comprises a spherical hinge arranged in the spherical hinge mounting through hole; the central shaft of the central shaft penetrates through the sphere center of the spherical hinge, and spherical hinge mounting holes are formed in the two ends of the central shaft; the suspender clamping mechanism comprises an upper suspender support and a lower suspender support which are arranged up and down; and the lifting lug mechanism comprises a pair of lifting lug pieces which are arranged at an interval. While the stability and safety of train operation are guaranteed, the damping and buffering effects are achieved, vibration from a rail can be effectively buffered, damage of vibration to a gearbox is reduced, the gearbox is protected against damage, and meanwhile the riding comfort of passengers is improved.

A firearm maintenance aid can include a firearm vise and a firearm support device. Firearm vise can include vise jaws, a threaded rod connecting vise jaws together, and jaw pin holes in each jaw, the holes extending from an outer surface of a jaw through to an inner surface of each jaw, wherein the holes in the first jaw align with the holes in the second jaw. Firearm support device can include a clamping portion and a supporting portion. The clamping portion can be clamped between the jaws of the firearm vise, can include two parallel clamping faces, and can define vise pin holes that align with the jaw pin holes. The supporting portion can be located opposite the clamping portion and can include a cylindrical shaft. Vise pins can be received by the jaw pin holes and vise pin holes to fixedly connect the support device to the vise.

The utility model discloses a pneumatic shearing device capable of adjusting a shearing position, which belongs to the technical field of pneumatic shearing tools and comprises a support, a first lifting rod, a ball joint, a mounting plate and a pneumatic shear, a control box is connected onto the support, an electromagnetic valve connected with the pneumatic shear is arranged in the control box, and the electromagnetic valve is electrically connected with a first switch. Through the arrangement of the support, the first lifting rod and the ball hinge joint, the height of the pneumatic shear can be adjusted, the orientation of the shear head of the pneumatic shear can be adjusted within a certain range, a workpiece can be sheared conveniently, and the shearing work efficiency is improved; by arranging a slide way assembly and a second telescopic rod, the left-right position and the front-back position of the pneumatic shear can be adjusted, and the pneumatic shear is fixed to a preset position; the up-and-down, left-and-right and front-and-back positions of the pneumatic shears can be adjusted, the orientation of the shear head can be universally adjusted within a certain range, and the application range is wide.

The present invention discloses a robotic system for aligning slender tools. A first swing arm and a second swing arm are both swingably arranged relative to a base, with the swing planes of the first swing arm and the second swing arm being parallel to each other. A first clamp is connected to the first swing arm via a first linear drive mechanism, which is used to drive the first clamp to move along the extension direction of the first swing arm. A second clamp is connected to the second swing arm via a second linear drive mechanism, which is used to drive the second clamp to move along the extension direction of the second swing arm. At least a portion of the surface of the ball joint is spherical, and the ball joint has a through hole for the slender tool to pass through. The first clamp and the second clamp clamp the ball joint. The robotic system of the present invention has a more compact structure, allowing operators to flexibly operate in more confined environments, thereby improving the maneuverability and ease of use of the equipment.

The application discloses a reinforcing structure of a bolt ball joint, a net rack structure and a reinforcing method. The bolt ball joint comprises a bolt ball and a rod piece symmetrically arranged on both sides of the bolt ball. The reinforcing structure of the bolt ball joint comprises a wing block group and a connecting rod. The wing block group comprises two wing blocks arranged in pairs, and each wing block can be directly connected to one of the rod pieces. The connecting rod is connected between the two wing blocks arranged in pairs. At least part of the wing blocks is provided with a connecting assembly, and the wing blocks are connected to the corresponding connecting rods through the connecting assembly. The reinforcing structure of the bolt ball joint has small connection difficulty, small required operation space and can meet reinforcing requirements.

The utility model discloses a fresh air pipeline wiring fixing device which comprises a fixing frame a, a fixing frame b and a connecting part, the fixing frame a comprises a sliding groove formed in the fixing frame a, the fixing frame b comprises sliding blocks arranged on the two sides of the fixing frame b, and the connecting part is arranged on the side face of the fixing frame a. The connecting part comprises a connector arranged on the side face of the fixing frame a, a connecting rod arranged at one end of the connector and a fixing head arranged at one end of the connecting rod, the connector and the connecting rod are connected through a ball joint, and the connecting rod and the fixing head are connected through a ball joint. The connecting part is arranged, the fixing frame b can slide along the sliding groove by sliding, so that a fresh air pipeline can be wrapped and fixed, the connecting rod arranged at one end of the connector can rotate along the ball joint of the connector, and therefore the angle of the connecting rod can be adjusted; and the fixing head arranged at one end of the connecting rod can be mounted on wall surfaces with various angles.

The application discloses a rotor stability control device and method with a spherical hinge, which mainly comprises a measurer, a controller, an electromagnetic actuator and a spherical hinge bearing support. The method mainly comprises the following steps: real-time monitoring and acquisition of vibration state data of a spherical hinge balance disc during rotation of a rotor; generation of a control signal by the controller according to the monitored and acquired vibration state data; output of an electromagnetic force by the electromagnetic actuator according to the control signal; application of the electromagnetic force to the spherical hinge balance disc, suppression of vibration of the balance disc and adjustment of equivalent angular stiffness, angular damping and angular mass of the spherical hinge bearing support; and application of the equivalent angular stiffness, the angular damping and the angular mass to the rotor through a controllable flexible foundation, so as to realize rotor stability control.

Push-up handle (1), at least having: 1.1. a support plate (2) for placing the push-up handle (1) on a surface, 1.2. a handle unit (3) for supporting a user on the push-up handle (1), wherein 1.3. the handle unit (3) is movably mounted relative to the support plate (2) so that, on the one hand, a rotational movement about an axis of rotation (D) is possible and, on the other hand, the axis of rotation (D) is freely movable about a pivot point within a given solid angle, 1.4. a ball joint (6) which is connected on one side to the support plate (2) and on the other side to the handle unit (3), wherein the ball joint (6) defines the spatial angle in which the free movement of the handle unit (3) is possible, 1.5. a rolling bearing (5) which enables the rotational movement of the handle unit (3), wherein the axis of rotation (D) of the handle unit (3) passes through the longitudinal axis (L) of the ball joint (6) and the pivot point of the ball joint (6), and 1.6. at least one spring (7) is provided which holds the handle unit (3) in a neutral starting position, characterized in that 1.7. a rotation angle limiting device (10) is provided which limits the rotational movement of the handle unit (3) to a certain angular range.

The utility model discloses a novel outer ball joint dust cover which comprises a dust cover body, openings are formed in the dust cover body, the openings are connected through a butt-joint assembly, the novel outer ball joint dust cover is provided with a first special-shaped body, a second special-shaped body, a bolt and a nut, and when the dust cover needs to be rapidly replaced on an outer ball joint, the first special-shaped body, the second special-shaped body, the bolt and the nut can be rapidly replaced. According to the dustproof cover, the dustproof cover body is broken apart to be arranged on the outer side of the outer ball joint in a sleeving mode, then the first special-shaped body and the second special-shaped body are in butt joint, the opening formed in the dustproof cover body is closed through cooperation of the bolt and the nut, and then the dustproof cover is rapidly replaced.

The invention relates to the technical field of speed reducers, and discloses a universal assembly for a rotary speed reducer and the rotary speed reducer, the universal assembly comprises a torque input part, a torque output part and a key pin, the torque input part can rotate relative to a base assembly of the rotary speed reducer, and the torque input part is provided with a mounting cavity; the torque output piece comprises an output shaft and a spherical connecting piece, the spherical connecting piece is arranged at one end of the output shaft in the axial direction of the output shaft and is at least partially arranged in the mounting cavity, two first sliding grooves are formed in the peripheral face of the spherical connecting piece, the two first sliding grooves extend in the outer surface of the spherical connecting piece, and the two second sliding grooves extend in the radial direction of the spherical connecting piece; the projections of the two first sliding grooves coincide with the projection of the axis of the spherical connecting piece. The number of the key pins is two, each key pin is arranged on the inner wall of the mounting cavity, and each key pin is in sliding fit with the corresponding first sliding groove in the length direction of the first sliding groove.

The present invention discloses a tower crane lifting safety detection device and method, including a calibration platform, wherein the upper end face and the lower end face of the calibration platform are two parallel planes, and the side surface of the calibration platform is evenly distributed with a number of indicator lights in the circumferential direction, and the lower end face of the calibration platform has at least three ball joint supports in an annular array, and the ball joint supports are equipped with a ball joint rod, and the outer wall of the ball joint rod is provided with a tension sensor along the axis direction of the ball joint rod, and the outer end of the ball joint rod is provided with a sling suspension mechanism, and the lower end face of the calibration platform is provided with a rotating table, and the rotating table is connected to a connecting rod, and the connecting rod is perpendicular to the upper end face of the calibration platform, and two distance measuring sensors are vertically connected to the lower part of the connecting rod in parallel, and the rotation path of the distance measuring sensor is concentric with the center of the annular array of all ball joint supports. The present invention can accurately evaluate the safety of the lifting of the object to be hoisted, avoid the occurrence of hidden dangers such as tilting of the object to be hoisted, false lifting of the sling, and uneven force on multiple slings, and improve the lifting safety of the tower crane.

A separable shoulder rest assembly for stringed instruments comprises a base component with receiving apertures and positioning feet, and a removable component with engagement protrusions and keyed apertures for secure attachment in predetermined orientation. An instrument interface assembly includes an elastomeric insert with engagement protrusions and contact pads positioned within a recessed cavity to minimize instrument contact area while providing secure engagement. A lockable ball joint mechanism enables multi-directional rotational adjustment for enhanced positioning flexibility. The separable design enables component customization and replacement while maintaining structural integrity and operational performance.

This invention relates to the field of construction monitoring equipment technology, specifically a settlement observation instrument for roadbed safety construction. The instrument includes a string strain gauge and a differential pressure static level. The differential pressure static level has connecting pipes on both its air and water inlets, which are fixed to a conduit support. The signal line of the string strain gauge is fixed within the conduit support. The two ends of the string strain gauge are fixed to a fixed end and a floating end, respectively. The floating end includes a movable end seat fixedly fitted onto one end of the string strain gauge. This invention allows adjustment of the floating end's height position through a sliding fit between the upper ball joint and the rotating sleeve. The orientation and tilt angle of the floating end can be freely adjusted through the universal joint between the upper ball joint and the upper spherical shell, and between the lower ball joint and the lower spherical shell. During on-site installation, adjusting the floating end position ensures that the string strain gauge's measuring rod remains in a natural, unloaded, and unstressed state, thus avoiding measurement errors introduced by initial stress and effectively improving the accuracy and stability of roadbed settlement and tilt monitoring.

The present invention discloses a large-tonnage block-assembled swivel ball joint, comprising a lower ball joint, an embedded base and an upper ball joint. The lower ball joint has a concave spherical surface and is divided into two lower ball joint submodules. The two lower ball joint submodules each have a first dividing surface formed by division. The outer periphery of the lower ball joint submodule is provided with a first connecting portion, and the first dividing surface is provided with a second connecting portion, which can realize the pre-connection of the lower ball joint. The embedded base is embedded in the foundation pit and is provided with a locking groove for the lower ball joint to be inserted. The embedded base is divided into two embedded base submodules. The upper ball joint has a convex spherical surface and is divided into two upper ball joint submodules. The upper ball joint and the lower ball joint are rotatably connected by a rotating shaft. The second dividing surfaces of the two upper ball joints are provided with positioning steps and matching steps, which can realize the pre-positioning of the upper ball joint. The large-tonnage block-assembled swivel ball joint of the present application can be quickly installed and debugged on site to speed up the construction progress, and the connection between each swivel ball joint is tight and not easy to fall apart.

A rear view assembly includes a mount having a spherical joint portion; and a main unit comprising a housing having a socket receiving the ball joint portion such that the main unit is articulatable on the mount by rotating about three vertical axes. First and second magnets are positioned within the housing and spaced apart to define a rotationally asymmetric combined magnetic field. A first sensor and a second sensor are positioned spaced within the housing so as to be collectively operatively associated with the combined magnetic field, where articulation of the primary unit on the mount causes movement of the first sensor and the second sensor relative to the first magnet and the second magnet. A processor determines a rotational position of the primary unit about the three axes with respect to the mount based on a combination of the magnetic field information from the first sensor and the second sensor.

This invention discloses a shock-absorbing and pressure-reducing permeable concrete pile reinforced with recycled tires and its construction process. The pile structure comprises a pile body formed by vertically connecting several precast permeable concrete columns; compressible rubber blocks containing permeable holes and ball joints are fixed between adjacent permeable concrete columns; a layer of non-woven fabric is wrapped around the permeable concrete pile to prevent soil from clogging the concrete holes; and a ring-shaped mesh skeleton structure made of recycled tire strips is used to wrap and fix the non-woven fabric around the pile. This invention, by comprehensively utilizing the permeable concrete columns, the ring-shaped mesh skeleton structure, and the compressible rubber blocks containing permeable holes and ball joints, can achieve pile stability under small seismic loads, prevent pile breakage under large seismic loads, and allow the pile to quickly return to its original position after the seismic load disappears, thus ensuring a comprehensive application effect of "unmoved by small earthquakes, unyielding in large earthquakes, and self-repairing after earthquakes."