26638 results about "Rotational axis" patented technology

A humanoid robot includes a torso, a left arm assembly coupled to the torso and having a first reference line, a left wrist coupled to the left arm assembly and including at least a rotational axis, and a left end effector coupled to the left wrist. The left end effector is configured to move about the rotational axis and includes a finger assembly with a second reference line and at least two degrees of freedom, and a thumb assembly with at least three degrees of freedom. A first angle is formed between the first and second reference lines when the left wrist is in a first configuration, and a second angle is formed when the left wrist is in a second configuration. Both the first and second angles are greater than 70 degrees, and the difference between the first and second angles is greater than 150 degrees.

Surface cleaning device, comprising a cleaning head (12), at least one cleaning roller (32) rotatable about a rotation axis (96), a drive motor (200) for the at least one cleaning roller (32), and a holding device (94) on which the at least one cleaning roller (32) is rotatably mounted and which holds the at least one cleaning roller (32) to the cleaning head (12), characterized in that the holding device (94) has at least one pivotable flap (144) to which a spring device (156) is assigned, wherein the at least one cleaning roller (32) is held clamped to the holding device (94) by the at least one flap (144), and in that a wiper device (166) for wiper-off dirty fluid from the at least one cleaning roller (32) is seated on the at least one flap (144).

A convertible stroller is provided that includes a shell configured to support an infant. A pair of rear legs are pivotally coupled to the shell and a pair of front legs are pivotally coupled to a respective rear leg. The rear legs and the front legs are retractable to a first transport condition, and deployable away from the shell to a second transport condition usable as a stroller. A front wheel may be coupled to each front leg that is rotatable about a horizontal axle in the second transport condition. Each front wheel has a post that acts as an axis of rotation in the second transport condition. A cam sleeve is provided that is movably disposed on each post. In a first position, the cam sleeve allows rotation about the axis of rotation, and in the second transport condition prevents rotation of the front wheel about the axis of rotation.

The invention relates to the technical field of numerical control machining, in particular to a CAM post-optimization method and system for geometric error compensation of a multi-axis linkage numerical control machine tool. The method comprises the following steps: firstly, carrying out kinematics analysis and geometric error modeling on a target machine tool, and deploying the target machine tool in a CAM post-optimization module; then actual state parameters of the target machine tool in the machining process are collected in real time through a laser interferometer; a motion instruction of a target machine tool and a detection result of a laser interferometer are synchronously obtained through a CAM post-optimization module, and then geometric errors of a linear axis and a rotating axis in the operation process of the target machine tool are calculated in real time through a kinematic model and a geometric error model. According to the method, different linear axis compensation modes are adopted for different instructions; and a cutter shaft attitude vector error and a cutter cutting point position error are calculated in combination with inverse kinematics, and are corrected step by step. The problem that the error compensation precision of a controller in an existing numerical control machine tool is insufficient can be solved.

A surface cleaning device is provided, comprising a cleaning head (12) with a cleaning head body (14), at least one cleaning roller (32) rotatable about a rotation axis (92), a drive motor (200) for the at least one cleaning roller (32), at least one cassette (92) with a holding device (94) for the at least one cleaning roller (32), wherein the at least one cleaning roller (32) is rotatably mounted on the holding device (94) and the at least one cassette (92) is removably seated on the cleaning head body (14), a receptacle (84) for the at least one cassette (92), which is arranged on the cleaning head body (14) and which is closed towards a first lateral side (80) of the cleaning head body (14) by a transverse wall (86) and is open towards a second lateral side (82) of the cleaning head body (14) opposite the first lateral side (80) through an opening (88),wherein the at least one cassette (92) on the second lateral side (82) at the opening (88) is removable from the cleaning head body (14) in a removal direction (186) and is insertable onto the cleaning head body (14) in an insertion direction (184), wherein a fixing device (192) is provided by which the at least one cassette (92) is fixable to the cleaning head body (14) in the region of the transverse wall (86) relative to the removal direction (186) and the insertion direction (184).

Disclosed is a multifunctional outdoor fan. The multifunctional outdoor fan includes a fan base, a fan support, and a fan head. The fan head is provided with a rotating shaft, fan blades mounted on the rotating shaft, and a fan grille mounted outside the fan blades. The fan grille is provided with a water tank, the water tank is provided with a water injection port, and the water injection port is connected to a water tank cover. The rotation shaft is provided with an atomization assembly, the atomization assembly is in communication with the water tank through a water tube, the water tank supplies water to the atomization assembly through the water tube, and the atomization assembly is provided with an atomization port.

A surface cleaning device is provided, comprising a cleaning head (12) with a cleaning head body (14), at least one cleaning roller (32) rotatable about a rotation axis (96), a drive motor (200) for the at least one cleaning roller (32), and at least one side cleaning tool (270) which is rotatable and / or oscillatable about at least one movement axis (294), wherein the at least one side cleaning tool (270) is coupled to the at least one cleaning roller (32) via a gear device (314) and wherein the rotation of the at least one cleaning roller (32) drives the movement of the at least one side cleaning tool (270) about the movement axis (294).

The invention discloses a novel textile fabric tensile strength detection device, and relates to the technical field of cloth detection equipment. The device comprises a base, a pressing block is arranged at the top of the base, push plates are arranged on the two sides of the pressing block, and first pressure sensors are installed in the push plates; an adjusting assembly is arranged on the top of the base. A rotating shaft, a gear and a toothed plate of the adjusting assembly are matched with a hydraulic rod and a clamping plate of the clamping assembly, accurate clamping and fan-shaped stretching of the side edge of cloth are achieved, and the defect that a traditional device can only conduct horizontal tension detection is overcome; an adjusting plate, an adjusting groove and a moving shaft of the linkage assembly are driven by a screw rod and a moving sleeve of the driving assembly, so that the cloth generates fan-shaped deformation under the action of lateral tension, the tensile strength of the side edge of the cloth can be evaluated more comprehensively in combination with dual monitoring of a first pressure sensor and a second pressure sensor, the accuracy of detection data is remarkably improved, and the detection efficiency is improved. The device is especially suitable for testing high-strength fabrics with easy-to-tear side edges.

A rotating shaft assembly and an electronic device, where the rotating shaft assembly includes a panel and a rotatable support mechanism. The rotatable support mechanism includes a swing arm, a fixed structure, a limit part, and a support structure. The support structure is provided with a mounting plane, and the panel is fastened to the mounting plane; a first limit portion is formed on the swing arm; and the limit part is connected to the support structure, and a second limit portion is formed on the limit part. When the screen is in a folded state, the limit part is separated from the swing arm. When the screen is in an unfolded state, the second limit portion of the limit part can abut against the first limit portion of the swing arm, thereby implementing mutual constraint between the swing arm and the support structure.

An intravascular blood pump comprises a pumping device including an impeller and an electric motor for driving the impeller. A rotor of the electric motor is rotatable about an axis of rotation and coupled to the impeller so as to be able to cause rotation of the impeller. An outer sleeve forms a casing of the pumping device, wherein stator components are fixed inside the outer sleeve by means of a casting compound. In a method of manufacturing the blood pump the stator components are placed on a molding base, including the outer sleeve to thereby form an interspace between the molding base and the outer sleeve in which the stator components are disposed. The casting compound is then injected into the interspace via the molding base to fix the stator components inside the outer sleeve. The outer sleeve preferably comprises a magnetically conductive material to form a yoke of the electric motor.

The invention relates to the technical field of optical detection and calibration, in particular to an optical detection and calibration method based on a laser cross calibration method, which comprises the following steps of: 1, suppressing dynamic ambient light and adjusting laser parameters; step 2, extracting anti-distortion feature points; 3, multi-view error collaborative optimization: inputting the corrected coordinates output in the step 2 and mechanical motion parameters of a rotating shaft encoder into a splicing optimization model, constructing a coordinate transformation matrix with curvature constraint, and obtaining a three-dimensional calibration point cloud under a global coordinate system through iterative optimization; and 4, dynamic closed-loop compensation: dynamically correcting the laser power compensation coefficient in the step 1 and the distortion correction parameter in the step 2. Through close cooperation of multiple steps, high-precision, stable and self-adaptive laser calibration is realized, and reliable optical detection and calibration results can be provided in various environments and working conditions.

A robotic torso for a humanoid robot includes a first torso member having an axial axis aligned with a reference axis and a second torso member having at least one mounting portion for at least one humanoid component. The robotic torso includes a series of actuators arranged in a column between the first torso member and the second torso member and coupling the first torso member to the second torso member. Each of the actuators has a rotatable member defining a rotational axis. The rotational axes of each adjacent pair of actuators in the series of actuators are orthogonal to each other.

Systems and methods for providing lubrication to a gas turbine engine are described. An example gas turbine engine includes a plurality of bearings disposed along an axial length of a rotatable shaft to provide rotational support between a static structure and at least one of a compressor and a turbine of the gas turbine engine. The gas turbine engine further includes a fuel system operable to deliver a mixture of fuel and lubricant sequentially to at least one of the plurality of bearings and the combustor so that during operation of the gas turbine engine, at least the lubricant within the mixture is in a liquid phase prior to being received by the at least one of the plurality of bearings, and in a vapor phase once the lubricant is delivered to the at least one of the plurality of bearings.

A pet water dispenser includes a water tank for storing liquid, an upper cover installed above water tank and having a sink and a water leakage opening communicating with water tank in surface, a water pump extending into or onto upper cover from lower part of water tank and having a water supply opening in surface above upper cover; water pump includes a first accommodating chamber internally having a motor which drives pump blades below first accommodating chamber to rotate through a rotating shaft, second accommodating chambers of which walls define a pump chamber with downwards-extended wall of first accommodating chamber; a centrifugal water pump formed by pump blades in pump chamber and matched motor and including a water inlet communicating with water tank, and a water discharging opening; a water supply channel formed by second accommodating chambers sequentially communicating with water discharging opening and water supply opening.

The invention provides an electrical equipment remote maintenance guidance method and system. The method comprises the following steps: capturing an aperiodic torque waveform and a magnetic field gradient abnormal signal by deploying a torque fluctuation sensor and a magnetoresistive sensor; performing multi-scale frequency band division on the non-periodic torque waveform, screening out a transient high-frequency component in a start-stop stage of equipment, and separating out a magnetic field polarity reversal characteristic from a magnetic field gradient abnormal signal; performing cross-domain matching on the occurrence time of the transient high-frequency component and the spatial orientation of the magnetic field polarity reversal feature to generate a mixed feature mark; calculating a frequency band overlapping degree based on the time-frequency energy distribution marked by the mixed features and generating a coherence map; and matching a fault historical case library according to the coherence map, and outputting a maintenance strategy set aiming at the rotating shaft dynamic unbalance and electromagnetic interference superposition fault. According to the invention, through fusion of torque fluctuation and magnetic field distortion collaborative analysis, the precision of mechanical and electromagnetic composite fault diagnosis of the rotating shaft is improved.

The present application relates to a mini foldable treadmill, a lower end of the strut is rotatably connected to one end of a running plate; a part of the swivel arm near the middle of the swivel arm is hinged to the strut by an second rotation axis, a connector is disposed at the lower end of the swivel arm, which is connected to the upper end of the transmission portion, the lower end of the transmission portion is connected to the upper end of the spring pin, the spring pin is slidably mounted at the lower end of the strut, a fastener is disposed on the running plate, a pin hole is disposed thereon, and the spring pin is driven to extend so that the strut is in an upright state or driven to retract so that the strut is not in an upright state.

A scrubber comprises a cleaning head assembly, the cleaning head assembly comprises a shell, a motor and a roller assembly connected to the motor in a sleeving mode, the motor is installed on one side of the interior of the shell, and the roller assembly comprises a roller piece fixedly connected with a first gear piece; the cleaning head assembly further comprises a transmission assembly arranged on the portion, on the opposite side of the motor installation position, of the shell and a brush assembly connected between the two opposite sides of the shell in a bridging mode, the motor drives the roller assembly to rotate, and the roller assembly and the brush assembly synchronously rotate through the transmission assembly. The transmission assembly is in transmission connection with the first gear piece; the first gear piece comprises a gear and an elastic piece; the gear is fixedly connected with the elastic piece, the elastic piece is detachably and fixedly connected with the roller piece in an inner cavity of the roller piece, the elastic piece comprises a rotating shaft and a spring, the rotating shaft elastically abuts against the shaft sleeve through the spring, the shaft sleeve detachably abuts against the roller piece in the inner cavity of the roller piece, and the rotating shaft can serve as a rotating shaft of the roller piece. And the spring can stretch out and draw back in the inner cavity of the roller piece.

The present invention discloses an optical module with adjustable polarization, which can be generically assembled in a lamp body assembly. The optical module with adjustable polarization includes a polarization lens body, and a hollow first cylinder and a second cylinder. One end of the first cylinder is detachably and rotatably connected to one end of the second cylinder. The polarization lens body is rotatably arranged in the inner cavity of the first cylinder. The polarization lens body is provided with a guiding and positioning portion at the edge perpendicular to the rotation axis. The second cylinder is provided with an inclined guiding slot hole, and the guiding and positioning portion is slidably connected with the guiding slot hole. The second cylinder is provided with a first engaging portion for detachably and rotatably connecting with the lamp body assembly. The present invention utilizes the first engaging portion on the second cylinder to assemble the optical module on the lamp body assembly, so that by rotating the first cylinder and the second cylinder, the polarization lens body can be deflected and rotated, enabling the light to be deflected by the polarization lens body and changing the irradiation angle, thereby realizing the adjustment of polarization in a limited space and completing the change of optical effects.

The present disclosure relates to a pair of screw elements suitable for a multishaft screw machine with m screw shafts SW1 to SWm rotating in the same direction and at the same speed, the respective neighboring axes of rotation X1 to Xm of which have a center distance A in a cross-section at right angles to the axes of rotation, and with m interpenetrating circular housing bores which each have an identical housing bore inner diameter D and of which the bore centers M1 to Mm have a distance equal to the center distance A, and of which the bore centers M1 to Mm coincide with the respective associated axes of rotation X1 to Xm of the screw shafts SW1 to SWm and coincide with the centers of rotation P1 to Pm of the screw elements.

An active air flap system mounted in a predetermined portion of a vehicle, includes: a housing, a flap mounted on the housing to be relatively movable, an actuator coupled to the at least one flap and configured to drive the at least one flap, and a power transfer mechanism engaging the actuator and the flip and configured to transfer power from the actuator to the at least one flap so that the at least one flap performs a dual operation of a sliding movement operation and a rotation operation of rotating around a predetermined rotation axis, preventing the occurrence of design heterogeneity and the air resistance caused by forming the space between the at least one flap and the radiator grill, and improving shielding properties.

The invention relates to the technical field of numerical control programming, in particular to a five-axis machining path planning method and system based on data driving, and the method comprises the following steps: obtaining real-time coordinates of each axis of a machine tool, calculating linear velocity and angular velocity components to construct a Jacobian matrix, executing singular value decomposition, and calculating a conditional number ratio by using maximum and minimum singular values; and inputting a nonlinear mapping function to calculate a dynamic penalty factor, generating a rotating shaft weighted item in combination with a rotating shaft identifier, constructing a weighted damping least square objective function, calculating a five-axis motion increment, and accumulating the five-axis motion increment with a real-time coordinate to generate a target absolute position coordinate. According to the method, the pose singularity degree is quantified by monitoring the machine tool pose condition number ratio and converted into the dynamic penalty factor to apply the self-adaptive constraint to the rotating shaft, the severe sudden change of the rotating shaft in the singularity area is inhibited, the tool nose track following error is minimized, and meanwhile smooth distribution of the motion increment is achieved; and the dynamic stability and the surface quality of five-axis linkage machining are improved.

The invention relates to the technical field of numerical control machine tool precision detection and compensation, in particular to a coordinated motion planning control method and related products in the five-axis machining process, and the method comprises the steps: building a machine tool digital twin model, and combining constraint conditions; calculating a dynamic load rate and adjusting an error weight according to the load rate; an optimal cooperative motion instruction is obtained through multi-objective optimization; obtaining a feed-forward compensation amount and a feedback compensation amount; fusing the feedforward compensation amount and the feedback compensation amount to obtain a total compensation amount, and correcting the optimal cooperative motion instruction in real time to generate a final control signal; according to the method, dynamic constraints of different dimensions of a shaft are unified, the real-time dynamic load rate of the shaft is calculated, and weight coefficients of a translation shaft error and a rotation shaft error in an objective function are dynamically adjusted and optimized according to the difference; and constructing a multi-objective optimization function, solving an optimal cooperative motion instruction according to the dynamic weight, and integrating feed-forward compensation and feedback compensation to generate a final control signal so as to realize accurate control.

An apparatus for wastewater filtration having a barrel, a basket and a screw on a shaft rotating therein for pushing solid in a distinct output. A removable cartridge comprises a cover for the barrel, the cartridge comprising a pre-sealed shaft connector which releasably connects to at least the upper shaft portion or the lower shaft portion to form the shaft. The screw comprises a brush on an outer rim thereof, the brush having radially outwardly oriented bristles that scrape an inner surface of the basket. The screw comprises a winged wiper at a bottom thereof for sweeping a bottom surface of the barrel, and the solid-material output is provided at the bottom surface of the barrel and is shaped as a rectangular opening which is offset from a central axis of the screw. Solid removal efficiency and maintenance are thereby improved.

A trench drain includes a trench, a grating seat and a grating hingedly connected to the trench. The trench has a base wall with peripheral side walls extending upwardly therefrom and an outwardly-extending peripheral flange. The grating seat is configured to receive the grating. The peripheral side walls of the trench have a pair of opposing elongated slots formed therein and the grating has a pair of posts on opposing ends thereof. Each of the pair of posts on the grating are received in a respective one of the pair of opposing elongated slots of the trench to establish an axis of rotation.

To provide a technique advantageous for moving a stage on which an electronic component is placed.SOLUTION: A stage moving mechanism 13 for moving a stage 12 with respect to a base 11 comprises: XY moving devices 20 and 30 for moving the stage with respect to a base in XY directions dX and dY forming a right angle with respect to a rotation axis A; and a rotation moving device for rotating the stage with respect to the base in a rotation direction about the rotation axis. The rotation moving device includes: a rotation direction driving source 70; a rotation support portion 71 rotated in a rotation direction dR together with the stage by a driving force output from the rotation direction driving source; and a rotation relay portion 72 for transmitting the driving force output from the rotation direction driving source to the rotation support portion while allowing the rotation support portion to move in the XY directions with respect to the rotation direction driving source.SELECTED DRAWING: Figure 1

An active air flap of a vehicle according to one embodiment of the present invention includes a frame part which communicates with an outside air inlet of a grill, a flap part including a plurality of flap units which are rotatably connected to the frame part and sequentially open or close the outside air inlet of the grill, a rotary shaft which connects the plurality of flap units to the frame part, and a driven pinion gear connected to the rotary shaft, a driving part which transmits a driving force to the flap part, and a control unit which controls the driving part to be driven.

A top toy being is provided. The top toy is used together with a field including a step part and an acceleration rail being configured on the step part. The top toy includes a rotating shaft extending in an axial direction, a rotor being concentric with the rotating shaft, and a ride-over part being configured on the rotating shaft above the rotor. The rotating shaft includes a landing part on a bottom end thereof. The rotor is configured to engage with the acceleration rail. The ride-over part includes an axially symmetrical sliding contact surface. The sliding contact surface has a diameter increasing as extending upwardly in the axial direction.

An edge trimming tool assembly (1) is disclosed configured to cut vegetation around edge formations (50). The assembly (1) comprises a drive shaft (3) and a trimming tool (5) configured to be rotated around a rotation axis (ax) by the drive shaft (3) such that a radially outer portion (5) of the trimming tool (5) orbits in a circular path (c). The assembly (1) comprises a guard (7) comprising a first guard portion (11) covering a portion of an area (A) formed inside the circular path (c) as seen in a first direction (d1) parallel to the rotation axis (ax) and a second guard portion (12) covering a portion of the area (A) as seen in a second direction (d2) parallel to the rotation axis (ax), wherein the second direction (d2) is opposite to the first direction (d1). The present disclosure further relates to a power tool (2) comprising an edge trimming tool assembly (1).

A holster for a handgun assembly that includes a handgun having a trigger guard with a lower surface. A support mechanism is on the holster bottom wall for supporting the handgun in the chamber in a direction toward the top wall. The support mechanism includes a non-circular rotary supported for rotation on the holster bottom wall about an axis of rotation. The rotary has a first position of rotation in which the engagement surface is presented toward the holster top wall for engagement with the lower surface of the trigger guard, thereby to support the handgun in the chamber in a direction toward the top wall. The rotary is rotatable about the axis of rotation out of the first position in response to engagement with a portion of the handgun assembly other than the trigger guard, during insertion movement of the handgun assembly into the holster chamber.

A chassis frame welding apparatus with a turning-over function comprises a welding device (1), a support frame (2), and two rotating supporting apparatuses, wherein the support frame is located between the two rotating supporting apparatuses; the welding device is disposed adjacent to the support frame; and each rotating supporting apparatus comprises a lifting device (4), a rotating device (5) and a clamping device (6), the rotating device comprising a rotating shaft (51), a one-way bearing (52), a first gear (53), and a first toothed plate (10). The chassis frame welding apparatus is provided with the one-way bearing and the first gear, which fits with the first toothed plate, and during the process in which the lifting device is used to lift by means of the rotating device and the clamping device a workpiece to be separated from the support frame, the first gear interacts with the first toothed plate, and the rotating shaft is then driven by means of the one-way bearing to rotate by 180 degrees; thus, the spacing between the workpiece and the support frame is adjusted by means of the lifting device, and the turning over of the workpiece under driving is completed, without providing a plurality of driving systems, thereby simplifying a turning-over supporting apparatus.