1332 results about "Axial rotation" patented technology

A firearm handguard attachment device comprises a barrel nut having a forward end, a rearward end, and a circumferential recess between the forward end and the rearward end, the recess having an uninterrupted surface and defining a forward shoulder and a rearward shoulder, a handguard having a forward end and a rearward end and configured to be slid onto the barrel nut, the handguard having a transversely extending opening in a lower portion thereof, the opening having a seat at each opposite end, a pair of wedges, one wedge of the pair being installed in one of the seats and the other wedge of the pair being installed in the other seat, and at least one fastener for drawing the wedges toward one another. The wedges are configured to engage the uninterrupted surface of the recess to prevent axial translation of the handguard relative to the barrel nut and to prevent axial rotation of the handguard relative to the barrel nut.

A borehole wall spin-shearing device includes a load applying assembly, a soil shearing assembly, and a data acquisition assembly, where the load applying assembly is configured to apply a vertical load and an axial rotational load to the soil shearing assembly; the soil shearing assembly includes a plurality of shear plates; the plurality of shear plates are configured to penetrate into undisturbed soil after being ejected due to the vertical load and then shear the undisturbed soil due to the axial rotational load; and the data acquisition assembly is configured to acquire torque values of the plurality of shear plates during a process of shearing the undisturbed soil. The borehole wall spin-shearing device can directly conduct an in-situ borehole shear test in an exploration borehole with a conventional diameter in China, reducing the cost of drilling. The borehole wall spin-shearing device achieves a high degree of automation throughout the test.

To provide a light source device and an optical device which can improve stability of light generated from a light source.SOLUTION: A light source device 100 includes: a target holding part 110 having a holding region for holding a target material TM for generating light L0 by giving excitation light LR thereto; a rotation shaft 120 for supporting the target holding part 110; and an axial rotation driving part 130 connected to the rotation shaft 120, and rotating the target holding part 110 around a central axis C of the rotation shaft 120 through the rotation shaft, wherein the target holding part 110 is rotated at a predetermined target rotation angular velocity, and the target holding part 110 has a mass such that a dangerous angular velocity in rotation becomes 85% or less of the target rotation angular velocity.SELECTED DRAWING: Figure 1

The invention relates to the technical field of frame type hydraulic machines, and discloses a machining device and process of a stand column for a frame type hydraulic machine. The device comprises a welding center, and the welding center is composed of a positioning mechanism, a welding mechanism, a reversing assembly, a driving assembly, a preheating assembly, a grinding mechanism and a plurality of auxiliary supporting mechanisms; the welding center is further provided with an outer circular pipe and an inner circular pipe, the positioning mechanism is installed in the inner circular pipe, the driving assembly is integrally assembled on the positioning mechanism, directional conveying of the steel component during welding is achieved, meanwhile, the steel component is pressed, the welding stress is reduced, and the reversing assembly is installed in the outer circular pipe and used for supporting and driving the inner circular pipe to rotate in the axial direction. According to the technical scheme, the assembly type inner framework can play a supporting role from the interior of the square tube during welding, the assembly type inner framework and the square tube form a whole after welding, the structural stability of the stand column during use is effectively improved, and meanwhile steel members can be pressed from the corners of the stand column to reduce welding stress.

A luggage caster for maintenance and replacement includes a wheel frame, a vertical shaft, and trolley wheels in a clearance fit with the wheel frame. The vertical shaft is configured to rotate axially within a vertical shaft hole of the wheel frame. a bottom end of the vertical shaft defines a riveting hole for forming a riveting flange. A top end of the vertical shaft is provided with a limiting plate that cooperates with the riveting flange to achieve an axial limitation of the vertical shaft in the vertical shaft hole. The top end of the vertical shaft is further provided with an installation head that protrudes from the limiting plate. The installation head is configured to insert into a shaft hole of a luggage bottom support. The riveting hole of the vertical shaft extends axially along the vertical shaft to define an anti-rotation tool hole.

A mechanical circulatory support (MCS) system having an axial rotary blood pump with an impeller housing having a cylindrical pocket for receiving a magnet and closed by an end ring, requiring only a single circumferential weld and an axial weld. The impeller includes a shaft and one or more blades extending radially from the shaft. An inner and outer wall extend longitudinally from the shaft defining the pocket therebetween. A magnet array is positioned within the pocket and configured to be magnetically driven by an output shaft of a motor. The end ring is coupled to the end of the pocket opposite the shaft thereby encapsulating the magnet array within the pocket. Alignment holes may be provided within a floor of the pocket for orienting and balancing the impeller.

Embodiments can relate to a prosthetic foot system. The system can include an ankle joint housing co-locating a rotation sub-assembly, a torsional shock absorbing sub-assembly, and a vertical shock absorbing sub-assembly. The system can include a foot component attached to the ankle joint housing. The system can be configured as a co-designed architecture to functionally integrate at least two functions of: (i) torsional shock absorption, (ii) multi-axial motion with stiffness modulation in single gait cycle, (iii) active dorsiflexion, and (iv) vertical shock absorption by causing the at least two functions to operate in concert.

The pipeline mounting device based on the natural gas power generation project comprises a fixing unit used for being connected to a pipeline in a sleeving mode, a supporting unit is arranged on the fixing unit, and the supporting unit can adaptively support the fixing unit and the pipeline in a telescopic mode; the adjusting unit is used for adjusting the fixing position of the fixing unit; the restraining unit is used for restraining deformation of the pipeline in the radial direction during thermal expansion. The device is fixed to the ends of pipelines with different diameters, the pipelines are pre-tightened and aligned through the adjusting unit before welding, installation is convenient, after welding, the device is not disassembled, supporting and restraining are conveniently conducted on the pipelines, and the tedious process of pipeline installation is avoided through the integrated structure of pre-tightening installation and supporting and fixing; axial extension and axial rotation of the pipeline are restrained through the adjusting unit and the fixing unit, and radial deformation of the pipeline is restrained through the restraining unit.

A vehicle door handle assembly includes a bracket fixed on an inner side of a door panel and a movable handle fastened to the bracket. The bracket includes first and second levers respectively having first and second holes for receiving first and second axes. The movable handle includes first and second sleeves respectively with first and second recesses to receive the first and second levers and the first and second axes. The second recess includes a top oblong opening. The second axis has a non-circular flange arranged at a first end to be introduced in the top oblong opening and to be restrained axially by a top wall of the second recess. The second axis also includes a non-circular removable cap to be fastened to a second end of the second axis to prevent axial rotation of the second axis with respect to the second recess.

A multi-degree-of-freedom bionic arm of a humanoid robot belongs to the technical field of robots, and seven degrees of freedom of the robot arm are formed by a shoulder swing arm rotating mechanism, a shoulder left-right swing arm rotating mechanism, a big arm axial rotating mechanism, an elbow rotating mechanism, a small arm axial rotating mechanism, a wrist rotating mechanism and a wrist inner drive rotating mechanism. Holes and grooves are formed in the elbow part for laying cables, the cables are not exposed, and the shell size of the elbow joint is reduced. And the cable does not run about when the elbow moves in a large range, so that interference with other parts is avoided. A connecting rod mechanism composed of a first output disc, two connecting rods and a second output disc is arranged on the side face, the load inertia of a forearm joint, a whole arm force arm and the tail end is reduced, and the arm load capacity and motion performance are improved; the wrist drives the front-back and left-right freedom degree axes of the hand to coincide at one point, and the flexibility of the wrist is improved. Due to seven degrees of freedom, the robot is more bionic, the degrees of freedom are also on the same straight line after the arms of a person are straightened laterally, and the movement offset is small.

A surgical tool for shearing tissue at a target surgical site, the surgical tool comprising a cannula assembly with a distal end and a proximal end, a cannula opening into the lumen of the cannula at the distal end, a cutting device coupled to the distal end and within the cannula opening, and an axial ball joint coupled to the proximal end of the cannula assembly, that when rotated, causes the cutting device at the distal end to rotate about a longitudinal axis passing axially through the lumen of the cannula assembly, so as to shear a portion of tissue at a target surgical site.

The invention relates to the technical field of machining, in particular to a cylindrical workpiece clamping device based on a milling and boring machine, which comprises a milling and boring machine workbench, a clamping and supporting mechanism for supporting two ends of a cylindrical workpiece is arranged at the top of the milling and boring machine workbench, and the clamping and supporting mechanism comprises a V-shaped seat and clamping assemblies symmetrically arranged on the V-shaped seat. The clamping assembly is obliquely arranged on the V-shaped seat so as to limit the axial displacement of the cylindrical workpiece; an elastic supporting mechanism is further arranged on the top of the milling and boring machine workbench and comprises a lower supporting base, an upper supporting base and an elastic assembly, and the elastic assembly is arranged between the lower supporting base and the upper supporting base. The top of the milling and boring machine workbench is further provided with a workpiece pressing mechanism for limiting axial rotation of the cylindrical workpiece. According to the milling and boring machine workbench, cylindrical workpieces of different sizes can be clamped and fixed, milling and boring machining of the cylindrical workpieces of different sizes can be completed, the cylindrical workpieces can be conveniently and rapidly aligned, and the milling and boring machine workbench can be suitable for milling and boring machine workbenches of various specifications.

The double-gun automatic welding device comprises a first welding multi-angle adjusting mechanism, a second welding adjusting mechanism, a displacement driving mechanism, an aligning clamp mechanism, a touch control unit and an electrical unit which are distributed and connected based on a rack. The rack is provided with a workbench panel and a movable panel which is partially sectioned and can be controlled to turn over; wherein the two spatially distributed welding guns are driven to perform welding under multi-directional displacement, displacement rotation, telescopic feeding and axial rotation, the two welding guns can be matched with each other to perform synchronous welding or independently controlled asynchronous welding, and the displacement driving mechanism and the aligning clamp mechanism are matched with each other to perform control such as clamping, displacement angle adjustment and rotation on a workpiece. All the parts are controlled in parallel through the touch control unit and the electrical unit, so that multi-angle adjustment of a weldment and a welding gun is achieved, the welding operation is changed from manual operation to mechanical operation, and the machining efficiency and the welding stability are improved advantageously.

A marine cleat with fastener retention is provided. The marine cleat can be a folding cleat and can include a cleat body configured to operably couple to a mounting surface of the watercraft, and a cleat head extending away from the cleat body. The cleat head can have first and second projections configured to receive a portion of a line, e.g., for mooring the watercraft. A bottom side of the cleat body can include first and second fastener retention slots, each having an insertion cavity that is configured to receive a head of a fastener therein, and a retention end that is configured to laterally receive the head of the fastener and fix the fastener in both axial translation and axial rotation with respect to the cleat body. The insertion cavities of the first and second fastener retention slots can be positioned outwardly from the retention ends.

The embodiment of the utility model provides a removing structure and removing equipment for box sealing paper of a packaging box, and relates to the technical field of packaging. The packaging box sealing paper removing structure comprises a first separating assembly and a second separating assembly, wherein the first separating assembly is used for separating outer sealing paper on a packaging box; the second separating assembly is used for separating the inner sealing paper on the packaging box; the adjusting assembly comprises an adjusting seat, a first adjusting part and a second adjusting part, the first adjusting part is arranged on the adjusting seat, the first adjusting part is connected with the first separating assembly and rotates around the axial direction of the adjusting seat relative to the adjusting seat, and the second adjusting part is arranged on the adjusting seat and connected with the second separating assembly; the extending directions of the first adjusting part and the second adjusting part are the same, and the second adjusting part rotates around the axial direction of the adjusting base relative to the first adjusting part, so that the projection of the first separating assembly and the projection of the second separating assembly on the horizontal plane are staggered. According to the structure, the occupied space is reduced, and the equipment cost is reduced.

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an axial rotation limiting structure, a vehicle arm assembly and an unmanned aerial vehicle. The axial rotation limiting structure comprises a mounting frame, a first limiting part and a second limiting part, and the mounting frame is used for being connected with a fuselage of the unmanned aerial vehicle; the vehicle arm is movably connected to the mounting frame and can axially rotate on the mounting frame; the first limiting part is arranged on the mounting frame; the second limiting part is arranged on the vehicle arm and can rotate along with the vehicle arm to make contact with the first limiting part so as to limit the axial rotation angle of the vehicle arm. According to the unmanned aerial vehicle, it can be guaranteed that the vehicle arm tilts within the angle range limited by the first limiting part and the second limiting part, so that the problem that other internal components on the unmanned aerial vehicle are affected due to the fact that the pitching angle of the vehicle arm is too large due to external force is solved.

The invention relates to the technical field of aerospace, in particular to a fixed-point vibration absorption method based on distributed magnetic suspension flywheel axial momentum exchange. The method comprises the following steps: establishing a magnetic suspension rotor dynamical model comprising axial translation and axial rotation of a rotor; determining a magnetic suspension flywheel group control quantity model according to the magnetic suspension rotor dynamic model; determining a star active control force and a star active control moment according to the magnetic suspension flywheel group control quantity model and the star dynamic model; under the constraint of the star active control force and the star active control torque, determining a force / torque distribution matrix of the magnetic suspension flywheel group; according to the force / torque distribution array of the magnetic suspension flywheel group, determining the axial vibration force and the torque action quantity of each flywheel; and on the basis of the magnetic suspension rotor dynamic model, according to the axial vibration force and the torque action quantity of each flywheel, determining a driving current to suppress vibration. According to the scheme, load precision stability and ultra-static performance can be achieved.

The utility model relates to the technical field of tray transportation, in particular to a bidirectional tray limiting and distributing device. A two-way tray limiting and distributing device comprises a two-way conveying line provided with a plurality of chain type conveying belts and a limiting assembly arranged on the side edge of the two-way conveying line. The limiting assembly comprises a fixing base, a rotating baffle and a positioning plate, and the rotating baffle rotating in the axial direction is arranged on the fixing base. When a small tray falls to the middle section of the conveying line, the conveying line drives the small tray to be conveyed rightwards, due to the fact that the rotary baffle on the side assists in position adjustment, the small tray can be located in the middle of the conveying line, the limiting and rectifying effects are achieved, and when a large tray falls to the middle section of the conveying line, the conveying line drives the large tray to be conveyed leftwards. The rotating baffle can rotate along with the tray, so that the transportation of the tray is not influenced when the tray passes through, and after the transportation of the large tray is finished, the rotating baffle returns to the original position to carry out the next transportation of the tray.

The invention relates to a wheel steering unit (1) for a steering device, in particular for a steer-by-wire steering device, of a vehicle, comprising: a rod (2) configured to be pivotably coupled at its axial ends to a tie rod (5), wherein the rod (2) has an anti-rotation section (7), an actuator (3) configured to displace the rod (2) translationally along a central axis (A) of the rod (2), and an anti-rotation unit (4) arranged on the anti-rotation section (7) of the rod (2) and configured to guide the rod (2) translationally in a housing (11) of the wheel steering unit (1), the anti-rotation unit (4) being designed as a linear roller bearing (13), wherein the linear roller bearing (13) has a housing (16) and a cage (14) received in the housing (16), wherein a plurality of is rotatably guided by rolling elements (15),and the anti-rotation section (7) and the housing (16) have a non-circular cross-section (12). Furthermore, the invention also relates to a steering device with such a wheel steering unit (1).

The invention discloses a multi-degree-of-freedom rotation error obtaining method and device, a medium and equipment, and relates to the technical field of precision measurement, and the method comprises the steps: installing a double-ball target on the end face of a rotary table, and obtaining a plurality of different rotation angle images when the double-ball target rotates along with the rotary table; detecting the plurality of images with different rotation angles, determining the three-dimensional coordinates of the sphere center positions of the plurality of double-sphere targets, averaging the three-dimensional coordinates of the sphere center positions of the plurality of double-sphere targets, and generating the motion trails of the sphere centers of the double-sphere targets; fitting the motion trail of the center of the double-ball target by adopting a least square circle method to obtain two base circle center coordinates of the motion trail on a two-dimensional plane, and obtaining a multi-degree-of-freedom rotation error of the rotary table according to the two base circle center coordinates; wherein the multi-degree-of-freedom rotation error comprises an axial rotation error, a radial rotation error and an inclined rotation error, and efficient measurement of the multi-degree-of-freedom rotation error is achieved.

The invention relates to the technical field of micro-nano precision driving and positioning, and discloses a large-stroke multi-degree-of-freedom piezoelectric nano probe station, which comprises an X-axis linear piezoelectric motor platform, a Y-axis linear piezoelectric motor platform, a Z-axis linear piezoelectric motor platform, a rotary piezoelectric motor, a first adapter frame, a second adapter frame and a probe assembly. And the X-axis linear piezoelectric motor platform, the Y-axis linear piezoelectric motor platform and the Z-axis linear piezoelectric motor platform are respectively used for driving the probe assembly to linearly move along the X axis, the Y axis and the Z axis. The rotary piezoelectric motor is used for driving the probe assembly to rotate in the axial direction. According to the invention, a series connection structure of a plurality of linear piezoelectric motor platforms and rotary piezoelectric motors is adopted, so that the probe station realizes X-axis, Y-axis and Z-axis three-dimensional movement, and the probe realizes high-precision positioning of 360-degree rotation. The invention has the characteristics of high repeated positioning precision, high resolution, large stroke and stable operation, and realizes nano-scale positioning and millimeter-scale stroke.

The invention provides a parallel robot system for leg fracture reduction surgery, a control method, equipment and a medium. The parallel robot system comprises a fixed ring, a moving ring, two infrared optical reference frames, a plurality of telescopic connecting rods and a plurality of motors. Wherein the two infrared optical reference frames are respectively fixed on the fixed ring and the moving ring, the plurality of connecting rods are respectively connected with the fixed ring and the moving ring through twelve universal joints, and the plurality of motors are respectively connected with six universal joints on the fixed ring so as to drive the universal joints to rotate around the axial direction. The motor rotates the universal joint by rotating the number of turns to drive the threads in the connecting rod to rotate, so that the connecting rod stretches out and draws back, and the leg fracture reduction process is completed. Accurate reduction of leg fractures is achieved, motor driving is used for replacing manual broken bone moving of a doctor, and the burden of the doctor in the operation process can be greatly relieved.

A marine cleat with fastener retention is provided. The marine cleat can be a folding cleat and can include a cleat body configured to operably couple to a mounting surface of the watercraft, and a cleat head extending away from the cleat body. The cleat head can have first and second projections configured to receive a portion of a line, e.g., for mooring the watercraft. A bottom side of the cleat body can include first and second fastener retention slots, each having an insertion cavity that is configured to receive a head of a fastener therein, and a retention end that is configured to laterally receive the head of the fastener and fix the fastener in both axial translation and axial rotation with respect to the cleat body. The insertion cavities of the first and second fastener retention slots can be positioned outwardly from the retention ends.

The invention discloses a servo motor straight pole and oblique pole dual-purpose rotor iron core press fitting tool and a press fitting method thereof.The servo motor straight pole and oblique pole dual-purpose rotor iron core press fitting tool comprises a base assembly, a rotor iron core positioning assembly and a pressing assembly, a supporting hole is formed in the base assembly, the rotor iron core positioning assembly comprises two positioning units, and the two positioning units are arranged on a rotor shaft in a sleeving mode in the using state; the two positioning units rotate in the axial direction to adjust the angle so as to be used for conversion between straight pole press fitting and oblique pole press fitting of the two rotor cores, and the pressing assembly can be arranged on the rotor shaft in a sleeving mode from the top end of the rotor shaft in the using state and can move up and down relative to the rotor shaft. The axial positioning device is used for axially positioning the rotor iron core and pressing the rotor iron core downwards so as to press the rotor iron core in place. According to the invention, only one set of tool is used, two rotor iron core straight poles or skewed poles of the servo motor can be pressed on the rotor shaft, the universality of the tool is improved, the cost is lower, and the pressing efficiency of the rotor iron core is effectively improved.

The invention discloses an unmanned aerial vehicle ground penetrating radar clutter suppression method and a transceiving array device, and belongs to the technical field of ground penetrating radars. The device comprises a single receiving antenna, multiple groups of transmitting antennas and a signal source, all the antennas are homogeneous, all antenna ports are located at the same horizontal height, and the signal source can provide two paths of excitation signals with the same frequency, the same amplitude and the opposite phase for the transmitting antennas at the same time; each group of transmitting and receiving antennas comprises two transmitting antennas and a receiving antenna located at the midpoint of a connecting line of feeding points of the two transmitting antennas, and feeding ports of the transmitting and receiving antennas are located on the same straight line. The receiving antenna is installed on the telescopic rotary table, the axial rotation direction of the receiving antenna can be achieved by adjusting the telescopic rotary table, and it is ensured that when multiple sets of transmitting antennas share the same receiving antenna, the polarization directions of the transmitting antennas and the receiving antennas are consistent. The clutter suppression method of the underground target echo signal is realized based on the device. According to the invention, the problem that underground target echo signals are easily submerged in strong clutters and are difficult to effectively extract is solved.

A miniature device is provided for facilitating performing a therapeutic activity at a target site in a patient. The miniature device comprises a body defining a longitudinal axis extending along a longitudinal direction, and is configured to be maneuvered to move in the longitudinal direction by a linear magnetic field aligned along the longitudinal axis, and to be rotated about the longitudinal axis by a rotating magnetic field rotating about the longitudinal axis.

A longitudinally folding marine cleat can include a base having a first fastener retention slot and a second fastener retention slot, each having a first jaw and a second jaw defining opposing opening surfaces and opposing retention surfaces. The opposing retention surfaces can be spaced apart at a distance configured to receive a square portion of a carriage bolt therebetween to fix the fastener in axial rotation with respect to the base, and the opposing opening surfaces can be spaced apart at a distance narrower than a distance across the square portion of the fastener, but at a width permitting a shank portion of the fastener to laterally pass through. A cleat head can be hingedly coupled to the base with first and second legs, which together with the base are configured as a four-bar linkage to transition the cleat head between deployed and stowed positions.

The stroke-adjustable crank connecting rod device for the punching machine comprises a connecting rod and a crankshaft rotationally connected to the connecting rod, the crankshaft comprises crank arms and an eccentric journal, the crank arms are connected to the front end and the rear end of the eccentric journal, the eccentric journal is rotationally connected with the connecting rod, a mounting hole is formed in the connecting rod, and the eccentric journal rotates in the mounting hole. The outer side of the eccentric shaft neck is sleeved with a hydraulic expansion sleeve, the outer side of the hydraulic expansion sleeve is sleeved with an eccentric adjusting sleeve, the outer side of the eccentric adjusting sleeve is sleeved with at least one set of bearings which are rotationally connected with the connecting rod, and the eccentric adjusting sleeve is arranged on the periphery of the hydraulic expansion sleeve in a sleeving mode and can rotate in the axial direction of the eccentric shaft neck. The eccentric adjusting sleeve and the crankshaft are locked through the hydraulic expansion sleeve, and the inner diameter of the eccentric adjusting sleeve is overlapped with the axis where the outer diameter of the eccentric journal is located. According to the stroke-adjustable crank connecting rod device for the punching machine, the stroke of the crank connecting rod can be effectively adjusted, and the use flexibility of equipment is high.

The invention belongs to the field of transportation equipment and discloses a package conveying device which comprises a supporting mechanism and a conveying mechanism arranged on the supporting mechanism, the supporting mechanism is composed of a rectangular supporting frame and two supporting rods, and the conveying mechanism comprises a conveying frame, a conveying belt, a driving mechanism, a driving roller and a transmission roller, the end portion of one end of the conveying frame is connected with the end, away from the supporting rod, of the supporting frame, the conveying frame can rotate in the axial direction of the connecting position, the other end of the conveying frame is supported through the lifting rod, and the conveying belt is arranged on the driving roller and the transmission roller in a sleeving mode. The height of the output end of the conveying frame is adjusted through the lifting rod, conveying can be conducted towards different heights, and the limiting protruding strips are arranged to prevent goods from rolling or sliding to affect the conveying efficiency.