341 results about "Rotational freedom" patented technology

An electronic watch includes a housing, a display positioned at least partially within the housing, a cover covering at least part of the display, and a crown having a portion positioned along a side of the housing. The crown may include an inner member that is rotationally constrained relative to the housing and an outer member that is rotationally free relative to the inner member. The device may further include a rotation sensor configured to sense a rotation of the outer member relative to the inner member.

The invention relates to the field of five-axis machine tools, in particular to a five-axis high-speed and high-precision machining center which comprises a machine base, a machining center body and a machining center body. The double-shaft movement device adopts a reinforced extension arm type structure and is used for driving the machining main shaft to move in the X and Z orthogonal directions or the Y and Z orthogonal directions; the horizontal moving device is used for driving the offset type double-swinging-head device to move in the horizontal direction; the offset type double-swing-head device is far away from the double-shaft movement device, and the offset type double-swing-head device has two rotational freedom degrees of an A shaft and a C shaft and is used for machining a workpiece at multiple angles; the machining main shaft is used for completing machining operation of the parts through high-speed rotation and accurate feeding; the automatic tool changing device is used for automatically selecting and changing tools; the control system is used for coordinating movement of all the devices so as to achieve efficient and high-precision machining. The stability and reliability of the machining center are improved.

Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The pulley has a dust protection system configured to isolate the at least one elastic group with respect to the external environment and to provide an axial force generating a damping to the movement between the hub and the crown.

The invention relates to the field of machine tools, in particular to a five-axis linkage high-speed high-precision machining center which comprises a machine base, a three-axis moving module and a main shaft device are arranged at the top of the machine base, and the three-axis moving module is used for driving the main shaft device to move in the three different directions of the X axis, the Y axis and the Z axis. The main shaft device comprises at least one main shaft capable of rotating and / or feeding and is used for carrying out machining operations such as cutting, drilling and milling on a workpiece; a cradle type rotary table device and an automatic tool changing device are arranged at the bottom of the machine base, the cradle type rotary table device is used for achieving adjustment of two rotational freedom degrees of a workpiece in the machining process, and the automatic tool changing device is used for automatically changing tools on the main shaft device. According to the multi-axis linkage drilling and milling device, multi-axis linkage, high-speed and high-precision cutting, drilling, milling and other machining operations can be carried out on workpieces.

An actuator of an electric parking brake is disclosed. An actuator of an electric parking brake according to one embodiment of the present invention includes a driving unit which outputs a rotational force through a driving shaft, a first gear unit which receives the rotational force from the driving unit, a second gear unit including a rotation shaft which receives the rotational force from the first gear unit to rotate, and a driving shaft control unit which is disposed on the driving shaft, provides a degree of rotational freedom to the driving shaft during braking, and fixes the driving shaft to prevent reverse rotation of the driving shaft due to a reverse rotation torque when the braking is ended.

The embodiment of the invention discloses a foldable rotor system for a high subsonic velocity tilt rotor aircraft, relates to the technical field of high-speed vertical take-off and landing aircrafts, and can reduce air resistance while realizing the functions of rotation, pitch change and folding. The foldable rotor mainly works in an unfolding mode and a folding mode, has rotational degrees of freedom in three directions, and can achieve the functions of rotation, pitch change and folding. When the high subsonic velocity tilt-rotor aircraft vertically takes off, lands and flies in a rotor wing mode, the rotor wings of the high subsonic velocity tilt-rotor aircraft are unfolded and are similar to a rotor wing system of a tilt-rotor aircraft; when the high subsonic velocity tilt rotor aircraft flies in a jet mode, the engine is switched into a turbofan mode, meanwhile, the rotors are folded backwards to reduce resistance, and high-speed cruise is achieved. Therefore, air resistance can be reduced while the functions of rotating, pitch changing and folding are achieved.

The utility model discloses a diabetic foot dressing change support, and relates to the technical field of medical instruments, the diabetic foot dressing change support comprises a support main body, the support main body comprises an outer frame and rollers arranged in the outer frame along the circumferential direction, the rollers are used for bearing feet, and a gap is formed between two adjacent rollers. The gap is used for allowing liquid to penetrate through, and the roller has the rotational freedom degree in the axial direction so that the side, opposite to the gap, of the roller can be separated from the gap. Compared with liquid leakage through holes in the prior art, through the structure of the rotatable roller operation supporting component, thorough cleaning can be achieved by rotating the roller in the cleaning process, and the later cleaning degree of the equipment is guaranteed; the supporting barrel and the liquid collecting barrel are separated, so that the liquid collecting barrel can be independently taken down, liquid in the liquid collecting barrel can be conveniently cleaned, the flexible bag is arranged, the supporting barrel and the liquid are isolated, the liquid collecting barrel and the liquid are also isolated, and the workload of medical staff is reduced.

The invention relates to a welding deformation control clamp and method for a supporting plate assembly of an inclined supporting plate frame, and belongs to the technical field of welding. The outer ring positioning spigot is processed on the upper surface of the mounting bottom plate and is used for radially positioning a frame outer ring of the inclined support plate frame support plate assembly; the frame outer ring has a rotational degree of freedom at the outer ring positioning seam allowance; the inner ring positioning spigot is processed on the upper surface of the mounting bottom plate and is used for radially positioning a frame inner ring of the inclined support plate frame support plate assembly; the frame inner ring has a rotational degree of freedom in the inner ring positioning seam allowance; and the supporting pipe positioning assembly is mounted on the upper surface of the mounting bottom plate and penetrates through a supporting pipe of the inclined supporting plate frame supporting plate assembly to rigidly limit angular movement of the inclined supporting plate frame supporting plate assembly. According to the welding tool scheme based on the axial, radial and rotational freedom degrees of the rigid limiting frame inner ring and the frame outer ring, the assembly efficiency and the welding quality are improved.

A method for operating a locking actuator for a parking brake function (34), which comprises - a pawl wheel (38); - a parking pawl (46); - a parking pawl actuator (42) for displacing the parking pawl (46) from a basic position in the direction of the pawl wheel (38) with an actuation force; - a counter spring (54) which presses or pulls the parking pawl (46) in the direction of the basic position, comprising the steps of - rotating the pawl wheel (38) in a first direction of rotation (74) until the parking pawl (46) is free; - displacing the parking pawl (46) with a test force (78) which is smaller than the actuation force; - checking the rotational freedom of the pawl wheel (38).

The invention discloses a sleeve-shaped tuned mass damper mounting method based on parameter design calculation. The sleeve-shaped tuned mass damper mounting method comprises the following steps that S1, parameters of a single-column wind turbine platform and a whole machine structure are calculated; s2, calculating parameters of the sleeve-shaped tuned mass damper according to the structural parameters of the wind turbine; s3, the sleeve-shaped tuned mass damper is installed on the single-column type wind turbine platform; in the step S2, a kinetic equation is established through a kinetic analysis model, the optimal damping coefficient cd and the distance d of the translational and rotational freedom degrees are solved, and the step S2 comprises the substeps that S21, the single-column wind turbine platform and the sleeve-shaped tuned mass damper are simplified into equivalent four-freedom-degree models; s22, assuming that external excitation is a simple harmonic load, and deducing translation response and rotation response of the sleeve-shaped mass body and the single-column type wind turbine platform; s23, determining a damping tuning parameter and a frequency tuning parameter; s24, solving an optimal damping coefficient copt by a simultaneous equation in combination with a branch resonance point condition; and S25, calculating the distance d according to the rotation radius ratio rho.

A rotatable paddle wireless power transfer system provides a robust electric power and data connection between a user and a support vehicle or structure adapted for use in harsh environments. A paddle retention clamp such as a pair of sprung circumferential fingers coupled on either side of a gap into a paddle retainer allows the paddle to be easily removably inserted by a user into the retainer, for example with only a single heavily gloved hand. When the paddle is docked in the paddle retainer, the paddle may be easily rotated relative to the retainer, with up to 90 degrees of rotational freedom so as to provide a non-binding disconnect of the paddle from the paddle retainer during normal or emergency disconnects through 360 degrees of force applied by the user to an electrical umbilical cable affixed to the paddle.

The invention relates to the field of steel pipe installation, in particular to a steel pipe joint butt-assembling seam pressing method and a steel pipe joint roundness adjusting device.A plurality of telescopic supports are evenly distributed in the first circumferential direction of a main body to provide radial support, and pressing rods are arranged at the tail ends of the corresponding telescopic supports, so that all the pressing rods are evenly distributed in the first circumferential direction of the main body; the two rolling pieces are arranged on the side, away from the main body, of the pressing rod in a rolling mode, so that the pressing rod can be supported on the inner sides of butt joints of two adjacent steel pipe sections through the two rolling pieces in the seam pressing process, and the steel pipe section roundness adjusting device has two rotation freedom degrees relative to the two steel pipe sections needing seam pressing to form staggered seams. Due to deformation of the end portions of the steel pipe joints, the steel pipe joints can slightly move in the first circumferential direction of the main body relative to the corresponding rolling pieces, the rolling pieces can be supported on circumferential equal division points of the adjacent steel pipe joints, the equal division points of the adjacent steel pipe joints are in one-to-one correspondence through the pressing rods, and the adjacent steel pipe joints are in butt joint accurately.

A hitch system includes an upper hitch portion that is configured to couple to a trailer coupler portion and to a vehicle coupler portion to provide multiple degrees of rotational freedom as well as longitudinal coupling for towing the trailer by the vehicle. A weight distributing lower hitch portion couples to the upper hitch portion about a transverse axis. The weight distributing lower hitch portion includes spring bars extending to rearward points on a frame of the trailer between a tongue of the trailer and the axle of the trailer. The upper hitch portion and lower hitch portion are biased away from each other and hence bias the spring bars away from the trailer frame. The spring bars may then be coupled to the trailer frame by using respective levers to transfer weight distribution.

The invention discloses a spring module, a force balancing device, a force balancing system and a medical auxiliary system. The spring module comprises a guide rail, a plurality of spiral springs and at least one rotating pair. The multiple spiral springs are connected in series parallel to the guide rail. The rotating pairs are movably connected to the guide rails, every two adjacent spiral springs are connected through one rotating pair, and the rotating axes of the rotating pairs coincide with the axes of the spiral springs. According to the application, a plurality of spiral springs are connected in series to form a long spring, and the long spring stretches under the guidance of the revolute pair, so that the spring can be prevented from bending. The two opposite ends of every two adjacent spiral springs can generate relative rotating motion through the corresponding rotating pair, it is guaranteed that the two ends of each spiral spring have the relative rotating freedom degree, and the spiral springs can stretch out and draw back in the track close to the theory.

The invention relates to the technical field of wire feeding of welding equipment, in particular to a chain type wire feeding hose which comprises a plurality of pipe joints connected in sequence, the pipe joints are provided with through holes, at least one rolling wheel is arranged on the pipe joints in the peripheral direction, one end of each pipe joint is provided with a protruding part, and the other end of each pipe joint is provided with a groove part. The protruding part of one pipe joint is in butt joint with the groove part of the adjacent pipe joint and is hinged to the groove part through a pin shaft. The layout of the rolling wheels on the pipe joints is optimized, so that the length of the single pipe joint can be extremely short, and the manufactured whole hose is extremely good in flexibility and can be bent into a very small curvature radius. The pipe joints which are connected end to end are connected through the pin shafts, enough connecting strength is achieved, the large rotational freedom degree is achieved, and the pipe joints can be used in a self-contained mode under the condition that an outer sleeve is not used. And the structure without using the outer sleeve is open, so that impurities or dust falling from the surface of the welding wire can easily and automatically fall out and is not easy to accumulate inside, and the cleaning and maintenance are convenient. And due to the open structure, the product assembly work can be automated.

The utility model relates to the technical field of metal processing, in particular to a cutting positioning device for metal processing, which comprises a clamping mechanism, the clamping mechanism comprises a base, a clamping seat and a clamping plate, a rotary driving component is mounted on the base, and the clamping seat is rotatably mounted on the base through the rotary driving component. According to the design scheme of the clamping mechanism, the clamping seat is allowed to be installed on the base through the rotary driving assembly, and the design provides a high degree of rotational freedom, so that the clamping plate is matched with the spring extrusion assembly and the limiting plate to accurately position and adjust the clamping of a metal piece, and when the metal piece is cut, the clamping seat is not prone to falling off. The angle of the metal piece can be adjusted at any time, the displacement of the metal piece on the clamping mechanism is adjusted, and therefore the cutting position of the metal piece can be adjusted more conveniently, and the metal piece is matched with a cutting saw blade.

The invention relates to the technical field of optical devices, in particular to a mirror surface adjusting device which comprises a rack. The adjusting assembly is rotationally connected to the rack and used for bearing the mirror surface, the adjusting assembly has two rotational degrees of freedom, and the two rotational central axes of the adjusting assembly intersect on a first plane; the driving assembly is movably connected to the rack, the output end of the driving assembly is movably connected with the adjusting assembly, the driving assembly drives the adjusting assembly to rotate in a centering mode, and the center of the mirror surface is overlapped with the rotating center of the adjusting assembly. Therefore, the adjustment accuracy and stability of the reflection angle are ensured, the influence of tiny deviation on the propagation path of the laser beam is reduced, the reflection angle of the laser beam is accurately adjusted by ensuring the constant position of the center point of the mirror surface in the rotating process, and the requirement of high-precision optical application is met.

A machine tool (1), in particular for machining bush-like or sleeve-like workpieces (2), comprising a machine frame (3), a workpiece carriage (4) movable in an x-direction, a workpiece clamping device (6) arranged on the workpiece carriage (4) so ​​as to be movable in a z-direction and rotatably driven about a rotational axis (32) running in the z-direction, a stationary second workpiece clamping device (10) arranged on the machine frame (3) and rotatably driven about a rotational axis (33) running in the z-direction, a stationary first tool holder (7) arranged on the machine frame (3) for internally machining a workpiece (2) clamped in the first workpiece clamping device (6), a stationary second tool holder (9) arranged on the machine frame (3) for externally machining a workpiece (2) clamped in the first workpiece clamping device (6) arranged workpiece (2), a tool slide (12) movable in the x-direction,which comprises a third tool holder (13) movable in the x-direction for externally machining a workpiece (2) clamped in the second workpiece clamping device (10), characterized in that the third tool holder (13) has exactly one degree of rotational freedom and a tool axis (36) running in the x-direction can be driven in rotation and / or that the first tool holder (7) has at most one degree of rotational freedom and can be driven in rotation about at most a tool axis (35) running in the z-direction, wherein a rotational axis (32) of the first workpiece clamping device (6) and a rotational axis (33) of the second workpiece clamping device (10) lie on a straight line running in the z-direction at a transfer position (31).

The invention is suitable for the technical field of vehicles, and provides a multi-degree-of-freedom angle module system for a distributed electric drive chassis, which comprises a hub motor, an upper control arm assembly, a lower control arm assembly, a shock absorber assembly, a steering knuckle and a steering mechanism, one end of the upper control arm assembly is movably hinged to the upper portion of a shell of the hub motor, and the other end of the upper control arm assembly is connected with a vehicle body. The lower control arm assembly is of an approximate linear mechanism structure, one end of the lower control arm assembly is hinged to the lower portion of the hub motor shell, and the other end of the lower control arm assembly is connected with a vehicle body. One end of the steering knuckle is hinged to the steering mechanism through a kinematic pair capable of providing rotational freedom in multiple directions, the other end of the steering knuckle is rigidly connected to a hub motor shell, and the steering mechanism is used for driving the steering knuckle so as to drive the wheel to rotate around the axis of the main pin. The angle module system is compact in structure, has multiple motion functions, and has the technical characteristics of high function cohesion and low system coupling.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

An adverse situation caused by bending of a connection portion between an active bending portion and a passive bending portion is prevented. In an endoscope provided with an active bending portion and a passive bending portion which are sequentially arranged from a distal end and a connection cylinder (50) which connects the active bending portion and the passive bending portion, the active bending portion and the passive bending portion each include a plurality of joint cylinders (30, 40), a coil member (60) which passes through an operation wire (90) for bending operation of the active bending portion is fixed to the connection cylinder (50), and a notch (43) for improving the rotational freedom of a joint cylinder (40A) of the passive bending portion which is connected to and rotates with the connection cylinder (50) is formed in the vicinity of the coil member (60).

The invention provides a multi-degree-of-freedom delivery method for a vascular intervention robot. A main hand device comprises an operating rod assembly; the operating rod assembly has an axial translation degree of freedom and a rotational degree of freedom, and an operator manually operates the operating rod assembly to remotely control a delivery suite of a vascular intervention operation of the slave hand device to axially deliver and rotate intervention consumables; a plurality of groups of delivery suites are arranged; the two groups of master hand devices are respectively a first master hand device and a second master hand device, and the two groups of master hand devices jointly control any group of delivery suites on the slave hand device; or the first main hand device controls the axial delivery freedom degrees of the two sets of delivery suites at the same time, and the second main hand device controls the rotation freedom degrees of the two sets of delivery suites at the same time; the force feedback device is high in force feedback precision and easy to control, facilitates judgment of a doctor in the operation process and remote operation control of the doctor, and improves the precision and stability in the operation process.

The present invention discloses an induction heating device, which belongs to the technical field of curved plate processing. The present invention provides a double-ring gyroscope to adjust the rotational freedom of the induction coil in the x-axis and y-axis directions, and provides a vertical lifting unit to adjust the movement freedom of the induction coil in the z-axis direction. The structure is simple and the cost is low. In the present invention, one of the functions of the vertical lifting unit is to control the movement freedom of the induction coil in the z-axis. The second function is similar to that of a spring. The clamping force of the vertical lifting unit is used to ensure that the universal wheel at the bottom of the inner ring is always in close contact with the plate. During the mobile induction heating process, the coil posture is adjusted by the contact force between the universal wheel and the plate, ensuring that the spacing between the induction coil and the plate is stable during the heating process. The effect of the contact force is transient. In theory, the coil posture can be adjusted in an instant, so it can adapt to the rapid movement heating process of a plate with a large curvature. The present invention does not require monitoring the shape of the plate, which further reduces costs.

This utility model provides a tool holder gripping mechanism, relating to the field of CNC machine tool gripping technology. The tool holder gripping mechanism includes a gripping sleeve, a base, and a mounting block. A guide key is provided on the end face of the gripping sleeve. The base has a mounting hole for inserting the gripping sleeve, allowing the gripping sleeve to rotate around the axis of the mounting hole after insertion. The mounting block is mounted on the base, and at least one positioning post is provided in the mounting block. The positioning post is located on the outside of the gripping sleeve, and restricts the rotation stroke of the gripping sleeve when it rotates clockwise or counterclockwise. The gripping sleeve has a certain degree of rotational freedom, which makes it easy for the guide key and the tool holder keyway to be precisely aligned when the gripping sleeve rotates, allowing the guide key to be smoothly inserted into the tool holder keyway, thus avoiding tool jamming when gripping the tool holder.

This application provides a power transmission structure and vehicle, belonging to the field of vehicle transmission technology. The power transmission structure is used to transmit power from a first splined shaft to a second splined shaft. It includes a sliding sleeve and a universal joint. One end of the sliding sleeve is sleeved and fixed to the second splined shaft. One end of the universal joint is provided with a connecting shaft, which slides through the sliding sleeve and has a circumferential limiting structure between it and the sliding sleeve. The circumferential limiting structure is used to limit the relative rotational freedom between the connecting shaft and the sliding sleeve. The other end of the universal joint is provided with an internal spline hole, which slides through the first splined shaft and has an axial limiting member between it and the first splined shaft. The axial limiting member is used to limit failure when the axial force exceeds a threshold range. Compared with the traditional drive shaft with flanges at both ends for connection, the power transmission structure provided by this application can meet the power transmission needs in compact and narrow spaces, and greatly improves the convenience of disassembly, assembly and maintenance.

The utility model discloses a profiling snow scraping shovel. The profiling snow scraping shovel comprises a bucket body, a shovel blade, a rotary connecting piece and an elastic reset piece. The bucket body comprises a front plate and a back plate; the front plate and the back plate are oppositely arranged, and a flat groove for installing a scraper knife is formed in the landing side of the bucket body. And the scraper knife is rotationally mounted on the back plate through the rotary connecting piece, so that the scraper knife has a rotational degree of freedom in the plane where the flat groove is located. The rotary connecting piece is a set of shaft sleeves, and a first receding hole set matched with the shaft sleeves is formed in the scraper knife. And the elastic resetting piece accumulates elastic restoring force under the rotation of the scraper knife so as to drive the scraper knife to reset after the external force is removed. The snow scraping shovel further comprises a fastener which is used for directly or indirectly connecting and fixing the front plate and the back plate. When the scraper knife makes contact with the uneven ground, the working angle is adjusted in a self-adaptive mode, the snow removing efficiency is improved, and working noise and equipment abrasion are reduced.

Featuring an anti-rotation device: at least one locking element (2) provided on a moving element configured to move longitudinally without rotation and projecting outwards in a radial direction from the surface of the moving element at at least one point, and at least one guide element (5) having a groove and configured to be arranged in a recess of an enclosure of the moving element such that its groove is arranged substantially parallel to the longitudinal axis of the moving element, and to guide the protruding part of the locking element (2) in its groove during longitudinal movement of the moving element, wherein the at least one guide element (5) is designed such that it has no degree of freedom along the longitudinal axis of the groove, but at least the rotational degree of freedom about an axis parallel to the longitudinal axis of the groove.

The utility model discloses a constructional column feeding port device, a constructional column pouring space is defined by the constructional column feeding port device, a constructional column formwork and a wall, the constructional column formwork comprises a back plate and a supporting plate, the constructional column feeding port device comprises a vertical plate, a baffle, a lug plate, a moving part and a locking assembly, the vertical plate is attached to the wall, and a notch is formed in one side of the vertical plate; the baffle is rotationally connected with the vertical plate; the two lug plates are arranged on one side of the vertical plate, the baffle is located between the two lug plates, each lug plate is provided with a through groove, and the two sides of the baffle are attached to the two lug plates respectively; the moving part is fixed to the side, away from the wall, of the baffle. The two ends of the moving part penetrate through the through grooves of the corresponding lug plates correspondingly. The locking assembly is arranged on the side, away from the other lug plate, of one lug plate, and when the baffle rotates into the notch, the locking assembly is matched with the moving part to lock or release the rotational freedom degree of the baffle. After the constructional column is poured, no redundant part is generated, manual removal is not needed, and the working efficiency is improved.

This invention discloses an internal spraying mechanism for aluminum billet cutting operations using a pump, comprising a roller section with four butterfly wheels, each butterfly wheel having a convex curved surface, and the convex curved surfaces of two coaxial butterfly wheels coinciding with the same spatial spherical surface; a spraying component, the four butterfly wheels being movably connected by a connecting block, the spraying component including a main rod section connected to a plurality of annularly arrayed nozzle rods, the nozzle rods being tangentially connected to a straight rod section; a water delivery rod communicating with the main rod section of the spraying component, the liquid in the water delivery rod being sprayed out from the nozzle rods of the spraying component; the main rod section of the spraying component being movably assembled with the connecting block, the spraying component having rotational freedom around its own axis; and the roller section contacting the inner wall of the axially penetrating cavity of the aluminum profile. This invention employs a probing nozzle design to spray liquid in a rotating manner into the hollow cavity of the aluminum profile, effectively removing metal debris generated during cutting, facilitating each sawing operation of the aluminum billet using the pump.

The utility model relates to the field of power system application equipment, and discloses a connecting device for an isolating switch / grounding switch. The device is mainly composed of a coupler, a clamping block, a connector, a square block, a pin I with a hole, a flat gasket I, a cotter pin I, a vertical connecting rod, a nut, a bolt, a pin II with a hole, a flat gasket II, a cotter pin II and a connector. According to the device, the coupling and the connector, the connector and the clamping block, and the connector and the vertical connecting rod are connected through pins with holes, so that rotational degrees of freedom in three directions can be obtained, the coaxiality error between the disconnecting switch / grounding switch body and the output shaft of the operating mechanism can be corrected, quick connection can be realized on an installation site, and the working efficiency is improved. The utility model has the advantages of simple structural design, convenience in installation and reliability in connection.