910 results about "Free rotation" patented technology

An archery cam adjustment assembly for an archery bow includes an axle extending along an axis from a first end to an opposing second end and structured to traverse a limb of an archery bow. The axle further includes a central portion defining a plurality of threads. A cam support is structured to support a cam and to engage the central portion of the axle. A securing member is structured to be moved between a locked and an unlocked state. In the unlocked state, the axle is enabled to rotate freely relative to the cam support to move the cam support along the axis and displace the cam in a lateral direction with respect to the limb. In the locked state, the axle is inhibited from rotating relative to the cam support and the cam support is inhibited from moving along the axis.

In a compound bow, an axle, having threaded ends, is pushed through a hole in a cam. Cam spacers, having internal threads, are screwed onto the ends of the axle until the ends of the cam spacers abut the cam. The cam can rotate freely around the unthreaded middle portion of the axle. The ends of the cam spacers go into holes in limb brackets attached to the bow's resilient limb ends. In one embodiment, the ends of the cams are threaded, and a nut is tightened over the thread to shift the cam spacers and cam left or right relative to the limb brackets. In another embodiment, the cam spacers and limb brackets are threaded, and turning the cam spacer shifts the cam left or right. In both embodiments, the cam position is precisely adjusted and very stable.

The invention relates to the technical field of laser cutting, and discloses an automatic rotating type laser cutting device which comprises a base plate, a workpiece containing disc, a movement adjusting mechanism and a workpiece pressing mechanism, a supporting structure for supporting the ground is arranged below the base plate, and supporting plates are fixedly arranged at the front end and the rear end of the upper portion of the base plate; a supporting frame transverse rod is installed above the supporting plate, angle rods are arranged at the two side ends of the supporting frame transverse rod, a longitudinal supporting plate is installed between the angle rods, a supporting frame longitudinal rod is arranged at the outer end of the longitudinal supporting plate, and the movement adjusting mechanism comprises a longitudinal movement adjusting structure, a transverse movement adjusting structure and a laser cutting mechanism. The workpiece containing disc is of a disc-shaped structure and is rotationally arranged in the middle of the upper portion of the base plate. The workpiece pressing mechanisms are symmetrically and fixedly arranged at the two ends of the upper portion of the base plate. According to the laser cutting device, a workpiece can freely rotate by 360 degrees in the horizontal direction, the workpiece can accurately rotate to a specified angle according to the cutting requirement in the laser cutting process, and the cutting flexibility and efficiency are greatly improved.

A conveyor device for use in a cutting unit of an agricultural harvester. The conveyor device includes a frame and at least one conveyor belt which revolves endlessly around two rollers arranged parallel to one another. A distance between the two rollers may be adjusted using a tensioning device. A first roller may be rotatably driven, and a second roller may be mounted to revolve freely. A device for rotational speed detection (associated with the first roller) is configured to detect a rotational speed of the first roller. Further, a second device (associated with the second roller) detect the rotational speed of the second roller during operation of the conveyor belt.

The invention relates to the technical field of fireproof equipment, in particular to an electrically-driven translation type heavy fireproof door which comprises a door body, a driving mechanism and a translation mechanism. The translation mechanism comprises a translation base and a nut sleeve, a mounting hole and a guide hole which penetrate through the two sides of the translation base are formed in the translation base, the nut sleeve and the lead screw form a thread transmission pair, the nut sleeve is rotatably mounted in the mounting hole, the guide rod is slidably connected in the guide hole, and a synchronous assembly is arranged in the translation base; when the door body moves to the tail end of the stroke, the circumferential constraint of the synchronous assembly on the nut sleeve is automatically relieved, so that the nut sleeve can freely rotate relative to the translation base. Therefore, the motor and the transmission system do not need to overcome the huge inertia of the door body to achieve forced stopping, the instantaneous load and locked-rotor risk of the motor are remarkably reduced, and meanwhile the impact stress borne by a mechanical transmission part at the terminal is greatly relieved.

A wire puller handle for easily changing wires includes a main frame, a take-up wheel, a plurality of fasteners, and a spring tube. The main frame includes a stand, a handle, a fixing shaft, and a fixing bracket. The take-up wheel includes a first half-wheel frame and a second half-wheel frame. A winding area is defined between the first half-wheel frame and the second half-wheel frame for accommodating a pull wire, and the take-up wheel performs free rotation by sleeving the sleeve on the fixing shaft. The plurality of fasteners are respectively fixed to the first half-wheel frame and the second half-wheel frame. The spring tube is passed and fixed to the fixing bracket at one end; the other end thereof is provided for the other end of the pull wire being sent out or retracted when the take-up wheel is in free rotation.

A motion simulator system is disclosed that includes a freely rotatable movable frame supported by, but unattached to, a hemispherical base. The movable frame comprises a spherical enclosure constructed from rigid, lightweight materials such as composite materials or interlocking panels, providing unlimited 360-degree rotation in all three rotational degrees of freedom (pitch, roll, and yaw). An internal actuator system coupled to the movable frame controls attitude positioning while the center of rotation remains substantially fixed relative to the base. Low friction engagement between the movable frame and base is achieved through transfer bearings integrated into the base's outer surface or by pressure-vented air cushions. The system enables smooth, continuous rotation of the untethered movable frame for enhanced motion simulation applications.

The invention relates to a device (1) for handling a drum and for unwinding a material wound onto the drum, wherein the handling device (1) comprises a rigid frame (2) comprising two side members (3) held at a distance from each other, and in which: - each side member (3) supports a wheel (4); - each wheel (4) is mounted, independently of the other wheel (4), so as to be free to rotate relative to the frame (2) about an axis (11) of rotation common to both wheels (4) and orthogonal to the side members (3); - each side member (3) is provided with a suspension member (5) arranged so as to be able to be fitted into an axial opening of the drum, wherein the suspension members (5) are suitable for being able to hold the drum at a distance from the ground so as to allow the drum to rotate on itself according to the axis of symmetry of the drum and to unwind the material wound onto the drum.

The invention discloses a positioning racking system for coating a large-size optical element. The positioning racking system comprises a main body structure, a lifting mechanism, a rotary bearing platform, a movement mechanism and a safety protection mechanism. A main body structure adopts a rigid design of composite support of a tripod and a tailstock. The lifting mechanism drives double ball screws to move synchronously through a worm and gear speed reducer, and precise lifting of the bearing platform is achieved. The rotary bearing platform can freely rotate by 360 degrees and is provided with a balance weight groove to adjust the gravity center. And the movement mechanism realizes flexible movement and stable support of the system. The safety protection mechanism integrates inclination angle, overload and limiting detection. The problems that a large-size and high-surface-shape-precision optical element is difficult to mount and position and poor in operation safety in the coating process are solved, and auxiliary mounting and positioning of a tool are safely, conveniently and precisely completed outside a coating machine.

The present technology relates to an automatically locking, releasable, safety knob assembly for a stove. The assembly includes a base with a locking notch. An adapter mates with the stove's valve stem and has a head, a tubular middle section, and an adapter base with a central aperture for receiving the valve stem. The knob includes a housing with a housing disk covering the base, an arm movement channel aligned with the locking notch in the locked configuration, and a central aperture for receiving the adapter head. The assembly further includes a sub-assembly with a slidable button allowing free rotation of the knob in the unlocked configuration, an automatic locking arm biased with the slidable button, and engagement with the button causing the arm to disengage from the locking notch and move in the arm movement channel, enabling the knob to freely rotate and rotate the valve stem.

A friction system (100) for a horology movement including: an arbor (1) with a longitudinal axis (L) including: a first fixed element (2) mounted so as to rotate integrally with the arbor (1) and having a first support surface (40); a second fixed element (7) mounted so as to rotate integrally with the arbor (1); a toothed organ (3) mounted so as to rotate freely on the arbor (1) between the first fixed element (2) and the second fixed element (7). The toothed organ (3) is integral with a socket coupling (4) having a second support surface (42), and the second fixed element (7) includes a body (72) configured to rotate integrally with the arbor (1) and resilient brackets (71) protruding relative to the body (72) and extending towards the toothed organ, the resilient brackets (71) being resiliently pressed against the second support surface (42) of the socket coupling.

A stroller handlebar actuator is provided. The handlebar actuator is provided at a handlebar of the stroller and includes cables that are attached to the handlebar actuator at one end and rear wheels of the stroller at another end. The handlebar actuator includes a protruding tab that a user to able to press using one or both thumbs without needing to remove their hands from the outer ends of the handlebar. By pressing the tab, a rotational force is exerted on the handlebar actuator, causing the handlebar actuator to rotate relative to the handlebar. This rotation causes the cables to pull inwards towards the handlebar actuator, thereby unlocking mechanisms provided at the rear wheels. The unlocking of the mechanisms causes the rear wheels to be able to freely rotate about a vertical axis. When the force is removed from the handlebar actuator, the handlebar actuator rotates back to its natural resting position and the cables return back to their original positions, locking the rear wheels.

The invention relates to the technical field of flow guide assemblies, and discloses a stop valve flow guide assembly which comprises a valve seat and a flow guide ring, the flow guide ring is arranged in a valve seat water inlet pipeline and composed of a fixed ring body and a movable ring body, the fixed ring body is fixed to the inner wall of the valve seat water inlet pipeline, and the movable ring body is arranged on the fixed ring body and can freely rotate. Delta wing plates are arranged on the inner side wall face of the movable ring in a circumferential array mode, the plane of each delta wing plate is in a right triangle shape, the joint of each delta wing plate and the movable ring is in large-radius fillet transition, the front edge of each delta wing plate is sharp, and the rear edge of each delta wing plate is thin and sharp.

To provide an operation assisting tool for an electronic game machine and its movement method capable of diversifying ways of enjoying an electronic game machine.SOLUTION: An operation assisting tool H for an electronic game machine comprises: a first controller 10 having a first locking section 10b; a second controller 20 having a second locking section 20b; a first member 1 having a first locked section 1b locked to the first locking section 10b outside; a second member 2 having a second locked section 2b locked to the second locking section 20b outside; and fastening means that rotatably supports the second member 2 and the first member 1, and fastens the second member 2 and the first member 1 for preventing movement of the second member 2 and the first member 1 in a predetermined rotary position.SELECTED DRAWING: Figure 1

This application provides a method, vehicle controller, and system for controlling the disengagement of a vehicle drive motor. When the target motor is detected to have disengaged from the wheel, a torque output command is sent to the target motor to control its output torque to zero. The rotational speed of the target motor is monitored in real time. If the target motor's rotational speed is detected to be greater than a preset state switching threshold, a state hold command is sent to the target motor's motor controller to maintain the current state. If the target motor's rotational speed is detected to be less than the preset state switching threshold, a state switching command is sent to the target motor's motor controller to switch it from the current state to a free-rotation state. This application can prevent the auxiliary drive motor's motor controller from entering an ASC (Active Short Circuit) state, thereby improving the lifespan of the motor controller.

The utility model relates to a winding machine needle hooking technical field, and disclose a kind of for winding machine needle hooking free rotation device, winding machine body side is equipped with workbench, workbench lower side is equipped with lifting module, lifting module side is equipped with two needle bar, needle bar top integrally formed has needle hooking main part;Lifting module is used to control needle bar and needle hooking main body's up-and-down reciprocating motion;Needle bar side is equipped with the rotating assembly for needle bar and needle hooking main body free rotation, lifting module moving end is connected with connecting plate, connecting plate side is equipped with connecting assembly;Under the action of rotating assembly, needle hooking main body can follow magnetic ring rotation direction dynamic adjustment angle, so that needle hooking main body can better cooperate winding action, make winding process more flexible, accurate, needle bar is freely rotated in bearing, so that needle hooking main body can be freely rotated, can fully satisfy the requirement of needle hooking main body different angle in winding process, improve the adaptability of equipment to different winding scene and process.

The utility model relates to the technical field of building curtain walls, in particular to an angle-variable connecting assembly of a curtain wall and a decoration strip, which comprises a pin seat and a plug pin, the pin seat is used for being fixed on an outer frame of the curtain wall, the plug pin is used for being connected with a decoration strip assembly, the pin seat and the plug pin are in plug-in connection, and the head of the plug pin is provided with a stainless steel ball. After being inserted, the plug is locked in the in-out direction and can freely rotate by 360 degrees in a plane; the building facade aluminum alloy decoration strip is driven to rotate through free rotation of the bolt system, the angle can be freely adjusted when the decoration strip is installed, cost is saved, installation efficiency is improved, and construction is flexible.

To provide a combination vehicle for a mower which considerably reduces fatigue even when mowing a wide area. [Solution] The brush cutter trailer of this invention has a first rod 1 extending horizontally, with one end having a connection part 5 for connecting to the brush cutter, the other end of which is connected to the centre of a second rod 2 extending vertically, one end of which is connected to the centre of a third rod 3 extending horizontally perpendicular to the first rod, a seat part 4 attached to the other end of the second rod, and wheels 7 attached to both ends of the third rod so that they can rotate freely.

The utility model discloses a rewinding machine for roll paper production, which relates to the technical field of papermaking equipment and comprises a bottom plate, a side plate is fixedly arranged on the bottom plate, a winding roller and a winding roller which can rotate freely are arranged on one side of the side plate, a sliding opening is formed in the side plate and located between the winding roller and the winding roller, and the winding roller is arranged on the side plate. A sliding opening is formed in the base, a sliding block is arranged in the sliding opening in a sliding mode, a pressing roller is rotationally arranged on one side of the sliding block, a motor used for driving the pressing roller to rotate is fixedly arranged on the other side of the sliding block, and the pressing roller can be tightly pressed on the winding roller through movement of the sliding block; according to the paper winding device, the pressing roller makes contact with the winding roller or paper wound around the winding roller so that the winding roller can be driven to rotate, paper winding is achieved, the pressing roller serves as a driving roller to control the winding speed, and therefore the paper winding speed is controlled, and the paper winding speed is improved. And it is guaranteed that the winding speed cannot be changed due to the fact that the diameter of the winding roller is increased, and the winding speed is more stable.

The utility model relates to a wrench tool technical field discloses a kind of quick fixed nut wrenchs convenient to use in narrow space, including handle, the inside sliding connection of handle has driving mechanism, the inside recess of handle is equipped, the top of handle is fixedly connected with rotating mechanism, the front side fixedly connected with connecting block of rotating mechanism, the front side fixedly connected with adjusting mechanism of connecting block, the front side fixedly connected with square head of adjusting mechanism, the driving mechanism includes protective sleeve, the inside sliding connection of protective sleeve has support plate, the top of support plate is fixedly connected with spring one. In the utility model, the length of handle can be adjusted according to the depth of narrow space, the effect of easily stretching into narrow area is realized, the head of wrench and handle can be freely rotated within a certain angle range, and the effect that wrench can easily cope with various complex angles in narrow space is realized.

A conveyor module comprising: a rotatable portion having one or more conveying elements mounted thereon, each conveying element having a plurality of engagement members configured to engage with a surface of an object to be conveyed in a first direction via rotation of the rotatable portion, each engagement member further being configured for free rotation on the conveying element in a second direction that is orthogonal to the first direction; a driving mechanism configured to rotate the rotatable portion such that the engagement members cause movement of an engaged object in the first direction; and a control mechanism configured to control rotation of the rotatable portion via the driving mechanism; wherein the rotatable portion defines an internal cavity, and the driving mechanism is at least partly housed within the cavity.

The utility model relates to a kind of anti-falling fire-fighting lance joint, belong to fire-fighting equipment technical field;Including ratchet lock ring, bidirectional elastic pusher and unlocking slider, when the water hose connecting end is inserted into the lance connecting end, rotate ratchet lock ring to make the end of bidirectional elastic pusher be inserted into ratchet pawl ring tooth slot, form mechanical interlock;When unlocking, one-hand presses unlocking slider, its inside wedge push rod extrudes pusher root, forces pusher elastic deformation to separate tooth slot, ratchet lock ring can be freely rotated to realize separation at this time;When water pressure is greater than 0.5MPa, conical sealing ring expands radially and enhances sealing, leakage rate is less than 0.1L / min;Protective flange covers 80% exposed part of ratchet lock ring, and 15J impact resistance is impacted, suitable for fire-fighting water hose quick connection, solve the industry pain point of traditional joint operation slow, easy to fall off, high risk of accidental touch.

The application discloses an air crossing robot, which comprises a flying mechanism and a buffer mechanism, wherein the flying mechanism comprises a flying body and a support connected with the flying body, and the buffer mechanism comprises a ring-shaped protection component movably connected with the support, the ring-shaped protection component is arranged around the flying body, and the ring-shaped protection component can rotate around its axis. The buffer mechanism of the air crossing robot can effectively separate the yawing moment in the phase-cut direction, thereby reducing the amplitude of the change of the flight posture of the air crossing robot, and in combination with the specific structure of the ring-shaped protection component, the collision duration can be prolonged, and substantial impact buffering is provided. Experiments show that the trend of the inclination of the air crossing robot after being hit is greatly reduced by being equipped with the buffer mechanism.

The present application belongs to the technical field of unmanned sailboat, and particularly relates to a rigid wing sail self-balancing turning sail system of unmanned sailboat, which comprises a main sail skeleton, a main sail shell, a turning sail control box, a tail wing connecting rod assembly, a tail wing main body, a steering engine and a tail wing rope driving assembly. The driving end of the steering engine is controlled to move, and the tail wing main body is driven to rotate through the tail wing rope driving assembly, so as to adjust the deflection angle of the tail wing main body relative to the main sail as a whole, adjust the included angle (attack angle) between the main sail as a whole and the wind, and make the main sail as a whole reach a predetermined attack angle and keep a stable balance state. The mast of the main sail as a whole can rotate freely around the unmanned sailboat body, realizes the rotation decoupling of the rigid wing sail and the ship body, the bow shaking movement of the unmanned sailboat does not affect the attack angle of the rigid wing sail, the tail wing can be regarded as the air rudder of the main sail by adjusting the attack angle of the main sail through the tail wing, and the method makes the main sail attack angle adjustment more efficient and rapid, and reduces the adjustment power consumption.

The invention discloses a bicycle wheel hub architecture comprising a main axle (6) surrounded by a shaft sleeve (1) carrying an axle bearing (2) that supports rotation of a hub shell (7) together with a second hub bearing (14) which is positioned radially in a freehub body (15) enabling the hub shell (7) to rotate freely about the main axle (6); a brake‑side dropout spacer (3), a cassette‑side dropout spacer (17) and a spacer sleeve (16) for axial positioning; a cassette (18) secured by a cassette lockring (19); and a retaining ring (13) for axial retention; wherein the freehub body (15) couples inner (10) and outer (9) synchronization rings to a fixed toothed ring (8) which is mechanically fastened to the hub shell (7), and wherein a mechanical engagement is produced by axial motion of a set of outer (11) and inner (12) bellows along the shaft sleeve (1).

The utility model discloses a vehicle-mounted vacuum magnetic suction support which comprises a magnetic suction connecting seat and a suction cup fixing seat. The magnetic suction connecting seat is connected with the suction cup fixing seat through a rotary connecting assembly, and 360-degree rotation is achieved under the action of the rotary connecting assembly; when the magnetic connecting seat is in an unfolded state, the magnetic connecting seat is supported through the rotary connecting assembly; when the magnetic connecting seat is in a contraction state, the rotating connecting assembly is arranged in the containing groove of the magnetic connecting seat, and the magnetic connecting seat is arranged above the suction cup fixing seat. According to the utility model, the magnetic suction connecting seat can freely rotate 360 degrees on the suction cup fixing seat by rotating the connecting assembly; a user can adjust the angle of the equipment according to needs, operation in different directions is facilitated, and the use flexibility is improved.

The present application relates to a kind of switching loading system for rock test equipment, steel frame (11) and base (12) are connected to form loading frame, steel frame (11) is to U type structure, its two side wings and base (12) are connected, normal stroke piston (15) is from top to bottom through the top plate of steel frame (11), can be applied from the normal pressure of steel frame (11) upper direction to lower;Tangential fixed piston (16) is from left through the left side wing of steel frame (11), its position can be adjusted by hand wheel, for jacking test equipment;Tangential stroke piston (17) one end is from right through the right side wing of steel frame (11), the other end is driven by oil pressure pump to provide test power for test equipment;Loading platform (13) is placed on base (12), and cantilever crane (14) of free rotation is installed on the top of steel frame (11), and the lower end of cantilever crane (14) is higher than the topmost of normal stroke piston (15).

This method simulates an engine failure in an aircraft with at least one first engine and one second engine, each engine having a gas generator configured to drive a free-spinning turbine mounted on an output shaft of said engine, each output shaft being coupled to the same aircraft rotor. It comprises the following steps: - desynchronization (M30) of the first engine; - desynchronization (M70) of the second engine without putting it into standby mode; - transmission (M90) of a message representing a failure of the second engine (M1). Figure 2

The invention discloses an outer rotating tower type mooring device and method for a pool model test. The outer rotating tower type mooring device and method are used for solving the problem that a test platform cannot rotate freely. The device comprises a supporting frame, a sensor, a bearing seat and a rotating assembly, one end of the supporting frame is connected with a ship model, and the other end, away from the ship model, of the supporting frame is provided with an opening structure; at least one part of the sensor penetrates through the opening structure, and the bearing seat is connected with the sensor; the rotating assembly comprises a rotating shaft and a hanging scaffold used for mooring an anchor chain, one end of the rotating shaft is rotatably connected with the bearing seat, the other end, away from the bearing seat, of the rotating shaft is connected with the hanging scaffold, the hanging scaffold drives the rotating shaft to rotate synchronously when rotating, and the sensor is used for collecting mooring restoring force and dynamic response data information of the ship model. The device can ensure the synchronous free rotation of the rotating shaft and the hanging scaffold, and can effectively reproduce the free rotation characteristic of the external rotating tower type mooring system in engineering practice.