1086 results about "Free rotation" patented technology

A wire puller handle that is without a handle and can be placed flat, and the wire puller includes a take-up wheel, a roller, a fixing frame and a spring tube. The take-up wheel is provided with a winding area inside to accommodate a pull cord, one side of the take-up wheel is connected to a concave frame with an accommodation portion, and the other side is provided with a hollow portion. An inner edge of the take-up wheel is provided for fixing one end of the pull cord. The roller is disposed in the accommodation portion and forms free rotation between the roller and the take-up wheel. One side of the fixing frame is fixed to the roller so that the take-up wheel is capable of being placed flat. One end of the spring tube is fixed to the fixing frame.

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.

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 lip carried integrally by said hub and configured to slide, in tight manner, with respect to an element integral with said crown. The dust protection lip is a labyrinthine sealing lip.

A system for a robotic finger may include a base coupled with a robotic finger having a plurality of joints and an actuation system that actuates the plurality of joints. The actuation system may include a first actuator that drives a connection coupled with a first joint of the plurality of joints. Driving the connection can cause a first rotation of the robotic finger about a first axis. The actuation system may also include a second actuator that drives a cylinder coupled with the first joint. Driving the cylinder can cause a second rotation of the robotic finger about a second axis. The cylinder can rotate freely about the first axis to enable the first rotation. Other aspects are also described and claimed.

Systems and methods are provided for recovery of a first vehicle that travels on a suspended track disposed at an elevated position within a facility. The systems include the suspended track, the first vehicle configured to travel along the suspended track, and an emergency wheel assembly configured to replace a first wheel assembly on the first vehicle while the first vehicle remains on the suspended track, the emergency wheel assembly including a wheel configured to freely rotate on an axle of the first vehicle. In some examples, the systems may include a second vehicle configured to travel along the suspended track, a coupling device configured to couple the first vehicle to the second vehicle, and a controller configured to operate the second vehicle to move along the suspended track while coupled to the first vehicle with the coupling device and thereby tow the first vehicle.

The invention discloses a multi-purpose loading test device and method for a large-span bridge cable system substructure, and relates to the technical field of bridge cable loading tests. The test device comprises a cable system stress loading system, a cross beam electric lifting locking system and a roller bearing transmission system, wherein the cable system stress loading system comprises a cable system self-balancing reaction frame, a free rotation force boundary subsystem, a free rotation anchoring subsystem and a sling force loading anchoring subsystem. Through physical designs such as self-balancing reaction frames, composite anchor rings and variable cross-section force transmission of the cable system, the force transmission path and the stress capacity of the reaction frames are optimized, the loading capacity of the whole loading system is increased to thousands of tons, and the loading diameter breaks through 500 mm; meanwhile, the free rotation force boundary subsystem and the free rotation anchoring subsystem can freely rotate in the sliding cross beam, and hovering tensioning at any angle can be achieved when the cable substructure is loaded in cooperation with free sliding of the sliding cross beam.

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.

The disclosure relates to a retractable leash device for uncoiling and coiling an animal leash. The retractable leash device including a housing, a spool body and a return spring which pushes the spool body back into a coiling position or holds it there. A braking device is provided, which has a brake element designed to brake the spool body. The brake element is movable against the force of a return element from a rest position, in which the spool body can rotate freely, into a braking position, in which the brake element brakes rotation of the spool body. A remaining length detection device designed to determine a predetermined remaining length of the animal leash is provided, and an automatic braking device coupled to the remaining length detection device is provided, which, when the predetermined remaining length of the animal leash is reached, urges the braking element in the direction of an automatic braking position and brakes the coil body with an automatic braking force.

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.

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 aluminum alloy door and window machining, in particular to an aluminum alloy door and window machining cutting device and a using method thereof.The device comprises a shell and two cutting device bodies movably connected into the shell and further comprises the cutting device bodies; the cutting device body comprises a support plate movably connected into the shell, a transverse plate fixedly connected to the support plate, a rotating disc rotationally connected to the transverse plate, a rotating rod fixedly connected to the lower end of the rotating disc, and a connecting rod fixedly connected to the rear end of the rotating rod. The first motor is started to drive the rotating rod to rotate, so that the cutting saw and the rotating disc are controlled to rotate synchronously, the cutting saw can freely rotate to any target cutting angle in the rotating groove with the circle center of the rotating disc as the axis, and meanwhile the first cutting groove and the second cutting groove are aligned to the profile cutting position; accurate cutting at a non-standard angle can be completed through single-time clamping, and repeated positioning and accumulative errors caused by angle adjustment limitation of traditional equipment are avoided.

A vehicular trailer guidance system includes a human machine interface provided in the vehicle and operable by a driver of the vehicle during a backing up maneuver of the vehicle with a trailer hitched thereto. The human machine interface comprises a freely rotatable rotary knob and operates (i) in a backing up trailer left-backup mode when rotated counter-clockwise, (ii) in a backing up trailer straight-backup mode when the rotary knob is pushed or pulled and (iii) in a backing up trailer right-backup mode when rotated clockwise. Responsive to selection by the driver of the left-backup mode or right-backup mode, the system sets a desired trailer angle relative to the longitudinal axis of the vehicle to an angle that is commensurate with a driver-selected setting of the rotary knob. The driver can select the straight-backup mode by pushing or pulling the rotary knob.

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

A closed system transfer device (CSTD) is described with a housing (15) and a detachable Luer connector (20) received in an axial recess (60) of the housing. The Luer connector (20) is attached to the housing (15) via at least one snap hook (68) inside the housing (15) that engages a snap ledge (70) on a central axial pin (40) of the Luer connector (20) to thereby defining a first axial coupling position (CP1) of the Luer connector (20). In this first axial coupling position (CP1) the Luer connector is allowed to freely rotate in both (CW and CCW) directions within the housing (15). The Luer connector (20) is further configured to be axially shiftable further into a second axial coupling position (CP2) in which rotation of the Luer connector (20) is prevented by form fit engagement between Luer connector (20) and housing (15).

The utility model relates to the technical field of gear boxes, in particular to a gear box bearing clearance measuring device. A connector of the gear box bearing clearance measuring device is used for being connected with an input shaft of a gear box, a positioner is connected with the connector, and a rotating seat can be connected to the positioner and achieves a rotating function through a built-in bearing; the rotating handle is connected with the positioner and is used for driving the positioner and the input shaft to rotate; the lifting assembly is used for being connected with a cover plate of the gearbox and connected with the rotating base through a fork rod. The lifting assembly is used for applying external force to the input shaft through the rotating seat; the support is used for being connected with a cover plate of the gearbox, the measuring dial indicator is connected with the support, and a measuring head of the measuring dial indicator abuts against the measuring face of the positioner. The gear box bearing clearance measuring device is simple in structure and convenient to use, can ensure free rotation of the input shaft in the use process of the device, can meet the detection requirements of gear boxes under different placement conditions, and can adapt to gear boxes with different parameters.

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.

The invention relates to the technical field of pressure detection, and discloses a pressurizing device for highway engineering raw material test detection, which comprises a pressure testing machine and a pressing plate arranged at the output end of the pressure testing machine. For detection of the rectangular test piece, the friction force during test piece adjustment is greatly reduced through the design of free rotation of the balls, the manual operation difficulty is reduced, surface abrasion of the test piece is avoided, and positioning can be rapidly completed; for the detection of a circular test piece, the unique structure of a turntable guide block is linked with a ball through height gradient change, the test piece is automatically and accurately guided to the center of a pressing plate, manual positioning errors are thoroughly eliminated, and the high precision and repeatability of detection data are ensured; after the test piece is positioned, through precise mechanical linkage of the turntable, the ejector rod and the ball, the device automatically realizes through hole plugging and seamless connection of a pressure detection link, ensures that the test piece is uniformly stressed in a pressurizing process, avoids non-uniform pressure distribution caused by the through hole, and effectively improves the reliability of a detection result.

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.