125results about How to "Reduce rolling friction" patented technology

A roller/foot device (1) comprising a cylindrical outer sleeve (10), a guide sleeve (20) arranged inside the outer sleeve (10), locking sleeve (30) arranged inside the outer sleeve (10), a spring device where one end abuts against the outer sleeve's closed end (13) and the other end abuts against one end portion of the guide sleeve or the locking sleeve and a roller element (41) which is rotatably mounted abutting against the locking sleeve's (20) end portion which is located at the extreme end of the outer sleeve (10). The sleeves comprise ribs which can slide towards each other and cause the roller element (41) to assume different positions in the longitudinal direction of the outer sleeve (10) when the device (1) is subjected to forces. The device (1) can thereby be employed as a roller device with the roller element (41) in an outer position and as a foot device with the roller element (41) in an inner position.

The invention discloses a conveying device for conveying an object. The conveying device comprises a transmission belt, a drive mechanism, a guide railway, a plurality of first rollers and a first push platform, wherein the drive mechanism is connected with the transmission belt for driving the transmission belt; the guide railway is arranged at one side of the transmission belt; the plurality of first rollers are arranged into a row, and are arranged above the guide railway in free rotation, and objects are placed on the plurality of first rollers; the first push platform is connected with the transmission belt, and is spanned on the guide railway; and when the drive mechanism drives the transmission belt, the first push platform is driven by the transmission belt to push the objects, so that the objects can move on the plurality of first rollers.

A magnetic motor automobile carries a magnetic motor and star rotor compressor to pack high-pressure input air into its on-board storage tanks. The compressor and storage tanks deliver the high-pressure working air and operational flows to several stages of compressors that boost the pressures during driving to very high-pressure, then ultra high-pressure, then super high-pressure, and finally to extremely high-pressure. A pneumatic torque converter uses jets of the extremely high-pressure to turn an input shaft of a transmission and differential. These, in turn, drive the powered wheels of a car.

Systems and techniques are provided for managing an interface between a machine or work vehicle and a surface that the machine/work vehicle travels on in order to provide an optimum work performance level that balances fuel efficiency and surface adversity. Fleet management and reporting capabilities pertaining to such interface management are also provided.

A hinge structure having leaf portions with adjustable clamping force arm includes a leaf structure and a pintle. The leaf structure includes a C-shaped barrel portion, and a first and a second leaf portion connected to and extended from two opposite axial edges of the barrel portion. Free ends of the first and second leaf portions are bound together by at least one leaf locating element. With the leaf locating element functioning as a fulcrum, a clamping force arm section is defined on each leaf portion between the fulcrum and the barrel portion. The pintle is rotatably received in the barrel portion with a predetermined rolling friction existed between them. The predetermined rolling friction is adjustable through mounting at least one adjusting element to the two clamping force arm sections.

The invention relates to rotating chair entertainment equipment. The rotating chair comprises a rotating device which can rotate around the center of a rotating shaft, a guide pole fixedly installed at the rotating device and in parallel arranged with the center of the rotating shaft, and a chair arranged at the guide pole through a self-rotation device. The chair can rotate around the guide pole; when rotating with the entire entertainment equipment, the rotation chair entertainment equipment of the invention can not only conduct the lifting motions along the guide pole, each chair of the equipment can self-rotate around the guide pole by taking respective guide pole as an axle center. The rotation chair entertainment equipment of the invention has better entertainment performance and interest.

A wire feeder includes a wire feeder housing that may enclose one or more drive rollers rotatably connected with respect to the wire feeder housing for engaging welding wire. The one or more drive rollers may be adjustable and adapted to drive the welding wire to a welding gun connected to the wire feeder. A drive motor is incorporated for delivering power for rotating the one or more drive rollers. Friction reducing devices, such as bearings, may be utilized and positioned between one or more driver rollers and the housing, where the bearings are electrically non-conducting for preventing the discharge of electrical energy across the bearing surfaces.

The invention provides a dust collection type spherical stop valve. The dust collection type spherical stop valve comprises a valve body, a bonnet, a valve clack, a ball assembly, a valve rod and a hand wheel, wherein the bonnet is connected with the valve body, a valve cavity is formed in the valve body, the valve clack is disposed in the valve cavity, the valve clack is snapped with one end of the valve rod, and the other end of the valve rod extends out of the bonnet to be connected with the hand wheel; the ball assembly is arranged between the valve clack and an outlet; the ball assembly comprises a ball, a positioning sleeve, a ball pad and a seal ring; the ball can float freely, the ball pad is a copper core pad which is positioned between the top of the ball and the valve clack; the positioning sleeve is arranged on the periphery of the ball, the inner circumference of the positioning sleeve is matched with the outer circumference of the ball, and the positioning sleeve is connected with the valve clack; and the seal ring is overlaid on a valve seat in the valve body, and a sealing surface of the seal ring, which corresponds to the ball, is an arc-shaped spherical surface. According to the dust collection type spherical stop valve, the multi-directional ball combination and the arc-shaped sealing surface are adopted, so that the sealing performance is good, the service life is long, and dust-collecting and dirt-removing functions are combined simultaneously.

The invention discloses a method for replacing a battery box and a battery replacing clamp. The battery box is borne by the battery replacing clamp, the battery replacing clamp is arranged on a movable quick-change system, and the battery box is transferred by the quick-change system; according to the battery replacing clamp, the battery box is pulled out of an electric automobile or a charging rack through a rodless air cylinder, and the battery box is pulled into the electric automobile or the charging rack from the battery replacing clamp; the battery replacing clamp can be used for opening or locking the battery box by unlocking and locking the air cylinder; and a process of replacing the battery box is finished. Batteries can be replaced by matching with a full-automatic or semi-automatic quick-change system. The method and the battery replacing clamp have the characteristics of wide application range and high compatibility, the labor intensity of replacing the battery box can be lightened, the efficiency of replacing the battery box is improved, and the operating process is reliable.

The invention provides a three-directional movement decoupling periodic structure for a vibrating table model box. The periodic structure is formed by sequentially overlapping n periodic structure units, each periodic structure unit is formed by sequentially overlapping a first side limiting layer, a plane decoupling layer, a second side limiting layer and an elastic layer, n is a positive integerlarger than or equal to 2, the section shapes of the first side limiting layer, the plane decoupling layer, the second side limiting layer and the elastic layer are the same, and the periodic structure is used for three-directional movement decoupling under seismic oscillation conditions. The invention further provides a three-directional movement decoupling model box for vibrating table tests. The model box is composed of the periodic structure, a model box bottom plate and a limiting protection door type frame through combination. The model box is light in weight, high in strength and suitable for super gravity and normal gravity vibration table tests; it is ensured through multiple measures that the movements of the model box and a test soil body are synchronous, the movements in the X-direction, the Y-direction and the Z-direction between the model box and the test soil body do not interfere with one another, no additional acting force is generated by the model box on the test soil body and a boundary effect is avoided as much as possible; three-directional movement decoupling can be well realized, and prototype site characteristics are restored.

A magnetic air car uses a magnetic motor to compress input air and save moderately compressed high-pressure air in storage tanks. The compressor and storage tanks deliver the high-pressure working air and operational flows to several stages of compressors that boost the pressures during driving to very high-pressure, then ultra high-pressure, then super high-pressure, and finally to extremely high-pressure. A pneumatic torque converter uses jets of the extremely high-pressure to turn an input shaft of a transmission and differential. These, in turn, drive the powered wheels of a car. The compressors float a connecting shaft with matching vanes and impellers on opposite ends on air bearings to reduce shaft turning friction to near zero. The balance of forces between the two ends of a coupled turbo pair allow a simple air bearing design to operate safely and reliably at high rotational speeds.

A dual trailer has a first trailer with a king pin for a tractor and a rear fifth wheel for the king pin of a second trailer. The rear end of the first trailer and the front end of the second trailer is lifted into an empty transport position so that the first and second trailers are supported solely on the tractor and the rearmost axle of the second trailer. The remaining axles are held raised from the ground by the lifting of the trailers and by an individual lifting hook supporting the axle raised relative to the frame. In the empty transport position, the first and second trailers are maintained as a single integral trailer in a directly aligned position. Each axle includes an air bag so that the hook is engaged when the axle is raised relative to the frame by releasing the air from the bag.

The invention discloses a motor rotating shaft protection device. The device comprises an installation pedestal, and the top of the installation pedestal is fixedly provided with a motor body througha bolt. The motor body is rotationally connected with a rotating shaft body, and one end, close to the motor body, of the rotating shaft body is fixedly provided with a first gear. A bottom plate is fixed at the top end of the installation pedestal through a bolt. A sleeve is welded on the bottom plate, and four clamping plates which are uniformly distributed are connected in the sleeve in a sliding manner. The sleeve is disposed on the rotating shaft body in a sleeving mode through four clamping plates, and first springs are evenly distributed on side walls, away from the rotating shaft body,of the clamping plates, wherein the other ends of the first springs are connected to the inner wall of the sleeve, and a plurality of evenly-distributed rotating rods are rotationally connected to the side wall of the end, close to the motor body, of the sleeve. The device is simple in structure and novel in design, can effectively reduce rotation friction of the motor rotating shaft, prolongs the service life, has a heat dissipation function, can protect the motor, and is high in practicability.

The invention discloses a metal sheet high-power waveguide phase shifter. The metal sheet high-power waveguide phase shifter comprises a rectangular waveguide, a metal sheet, a supporting rod, a supporting seat, a threaded rod and a cover plate, wherein two supporting legs of the supporting rod penetrate through one side of the rectangular waveguide to be connected with the metal arranged in a cavity of the rectangular waveguide, the supporting rod is sleeved with the supporting seat, the cover plate is fixedly arranged on the supporting seat through screws, the threaded rod penetrates through the cover plate and the supporting seat in sequence to be connected with the supporting rod through threads, and a bearing structure is arranged between the threaded rod and the cover plate. Compared with a traditional waveguide phase shifter, approximately-linear phase change of the waveguide within the range from 0 degree to 360 degrees can be achieved by the arrangement of the metal sheet, and the problem that the metal sheet is broken down when the metal sheet high-power waveguide phase shifter works in a high-power environment can be avoided.

A numerical controlled combination drive tower pumping unit includes a main tower frame, a power system, a drive system, a control system, a balance weight box, a balance weight pull rope, a wire rope wheel, a drive rope, and a wire rope hanger. The control system is connected to the power system to control the speed and the reversing position of the power system. The power system is mechanically connected to the wire rope wheel. The wire rope wheel is mounted on a wire rope wheel shaft. Two ends of the wire rope wheel shaft are placed on the wire rope wheel support and are respectively installed in two roller wheels. The wire rope wheel shaft or two roller wheels are placed on a rolling plane. There are limiting blocks at both ends of the rolling plane, and there are also locating blocks to fix the roller wheels.

The invention particularly discloses an omnibearing profile device of a swather and solves the problem of stubble cutting flatness of an existing swather during harvesting. A left-right profile mechanism comprises a hollow shaft and a connecting frame, wherein a shaft sleeve is arranged on the outer side of the hollow shaft, a strip-like steel plate is arranged above the shaft sleeve, and a left-right adjusting oil cylinder is arranged at the lower part of the strip-like steel plate; an up-down lifting mechanism comprises front lifting cross beams and back lifting cross beams, a front connecting rod is fixed between the two front lifting cross beams, upper lifting cross beams, lower lifting cross beams and front-back adjusting oil cylinders are arranged between the front lifting cross beams and between the back lifting cross beams, and a back connecting rod is arranged between the back lifting cross beams; and output ends of range sensors and range sensors I are connected with the input end of a controller, and the output end of the controller is connected with input ends of the front-back and left-right adjusting oil cylinders. The omnibearing profile device meets the profile requirement when harvesting crops on land which is uneven left and right and wavy front and back and can realize stubble cutting flatness so as to meet harvest requirements.

The invention discloses a reduction transmission mechanism of a rolling shutter door machine, which comprises a base, a rigid wheel fixedly arranged on the base, a flexible wheel and a power shaft, wherein the inner revolution surface of the rigid wheel is provided with inner wheel teeth, the outer revolution surface of the flexible wheel is provided with outer wheel teeth, the power shaft is coaxially and fixedly connected with a cam, and the can is provided two farthest ends; the flexible wheel is arranged in the rigid wheel, the inner wheel teeth can be matched with the outer wheel teeth, and the number of the outer wheel teeth of the flexible wheel is less than the number of the inner wheel teeth of the rigid wheel; the cam is arranged in the flexible wheel, a plurality of needle rollers are annularly arranged at intervals between the cam and the flexible wheel, and the needle rollers are located by a flexible holder; and the two farthest ends of the cam abuts on the flexible wheel by means of the needle rollers, and the abutted part of the flexible wheel is subjected to elastic deformation, so that the outer wheel teeth at the abutted part are meshed with the inner wheel teeth. The invention has the following advantages: 1, the reduction transmission mechanism can realize the reducing purpose by using only one reduction system, and has the characteristics of large reduction ratio, simple structure and small occupied space; 2, the traditional brake housing can be omitted; and 3, the processing cost is low.