32results about How to "Reduce lateral friction" patented technology

The invention discloses a seat angle adjusting device comprising a ratchet wheel, a stop plate, a locking slider and a pawl. A driving device can optionally drive the locking slider to a locking position or a retracting position and drive the pawl to a stretching position or a retracting position. The stop plate is provided with a first stop limit portion and a second stop limit portion. When the first stop limit portion is stressed by rotation torque in rotation direction, the locking slider at the locking position is abutted against the circumference of the first stop limit portion. When the rotation torque is larger than a first preset torque value, the first stop limit portion can deform circumferentially under the action of the locking slider, and the pawl at the extending position can be driven to rotate by the ratchet wheel to a toothed portion on one side of the pawl to mesh with the ratchet wheel completely. When the rotation torque is larger than a second preset torque value, the second stop limit portion can be abutted against the pawl, and the second preset torque value is larger than the first preset torque value. The invention further provides a seat utilizing the seat angle adjusting device on the basis of the above structure.

The invention is a car damper with two guides and lubrication which can reduce the wear and enhance the damping effect. It includes an oil storing cylinder, a working oil cylinder is arranged in the oil storing cylinder, the bottom of the oil storing cylinder and the working oil cylinder are connected with bottom valve, a piston device is arranged in the working oil cylinder, the top of the working oil cylinder is arranged with a guiding cover and the second guiding cover, the two covers are covered out of the guiding bearing, a oil seal is arranged at top of the covers. The character is that tubes are arranged on the link shaft at two ends of the piston, interrupting spring bracket is arranged at two ends of the tube, interrupting spring is arranged on the interrupting bracket reversely, a oil storing slot is arranged on top of a guiding cover, a oil returning aperture penetrating the guide cover subjacent part on the cover, a ring slot is arranged on top of the second guide cover, a oil returning aperture is arranged on the inner wall of the ring slot, the guide cover oil returning aperture is connected to the second cover oil returning aperture.

The invention provides a hot press device for high temperature adhesive curing. The hot press device comprises an end cover (1), bolts (2), a force rod (3), a base (4), a magnet (5), a high temperature rubber pad (7), an electric heating sheet (8), an electrode (9), a lead hole (10), a bearing (11), and a core shaft (12). The base (4) is of a cylindrical structure with an inverted U-shaped cross section; the upper bottom surface is provided with a through hole and the inner wall of the through hole is provided with a thread. The base (4) provides support, and the magnet (5), the high temperature rubber pad (7) and the electric heating sheet (8) are arranged in the base (4). The magnet (5) provides attracting force; the upper end of the magnet (5) is provided with an internal thread which is directly connected with a core shaft thread (12c) of the core shaft (12). The hot pressure device allows the temperature and the applied force to be adjusted, thereby meeting the conditions of multiple times of curing of a high temperature adhesive, and is simple in design, accurate in control and easy to operate.

The invention relates to an AGV four-wheel independent steering and differential combination control mechanism. A four-wheel independent steering and differential combination mode is adopted, throughmutual cooperation of two devices, the rotation angles of four wheels and the rotation speeds of the wheels on the two sides can be controlled at the same time, the 360-degree in-situ any-radius rotation turn-around action and slant motion are finished, an AGV can achieve in-situ 360-degree rotation, horizontal motion at each angle and steering at any radius, and compared with front wheel steeringand differential steering, the mechanism can finish the 360-degree in-situ any-radius rotation turn-around action and slant motion. Compared with an AGV using special tires (Mecanum wheels and universal wheels) for steering, the four-wheel independent steering and differential combination control mechanism can adopt common tires, the rotation directions of the four wheels and the differential quantity of the tires on the two sides are controlled so as to stably control the steering mode of a mobile platform, and abrasion of the tires can be reduced to the maximum limit. The AGV can be suitable for the complex ground under the condition that the flexible state is kept.

A method is provided for counteracting a roll moment in a vehicle rollover event. A potential occurrence of the rollover event is detected over an outside wheel. The potential rollover occurrence event is detected when a tire lateral force is greater than a lateral acceleration force. A braking torque is applied to at least one outside wheel (rear outside, front outside or both outside wheels) for producing a longitudinal wheel slip on the at least one outside wheel wherein the longitudinal wheel slip increases a longitudinal force acting on the at least one outside wheel, cooperatively producing a vehicle yaw for off setting an oversteering condition. The peak lateral friction is reduced between a tire coupled to the at least one outside wheel and an underlying road surface in order to reduce the peak lateral friction and the roll moment.

This invention is provides a means of playing LP records with minimal distortion. Low distortion is achieved by eliminating tracking error normally associated with pickup cartridges mounted to pivoting tone arms. This invention discloses a tone arm that constrains the motion of the stylus to straight radial path, mimicking the cutting path of the record lathe, supported on parallel rails by free rolling spherical bearings. Unlike many previous linear tracking tone arms, this invention does not rely on air pressure or servo motor mechanisms. The use of free rolling bearings or axles between parallel tracks fashioned from rails, rods or tubes, eliminates all sources of lateral friction other than pure static and rolling friction of the balls on the rails, rods or tubes. In the preferred embodiment, the fixed rods or tubes are driven synchronously, thereby eliminating static friction of the supporting rolling balls. Friction is further reduced using magnetic or buoyant support of the tone arm to reduce bearing load to that amount minimally sufficient to maintain full contact between the rolling balls and the upper and lower rods.

The invention discloses a high-speed-rotation atomizer with the vibration protection function. The high-speed-rotation atomizer comprises an atomizer body, a supporting flange and a controller, wherein a vibration measurement device is installed at the top of the supporting flange; the supporting flange comprises an upper supporting flange body and a lower supporting flange, a damping gasket is installed between the upper supporting flange body and the lower supporting flange body, an atomization wheel is installed at the bottom of the atomizer body through a retracting nut, and multiple windage resistance baffles are installed at the bottom of the atomization wheel through a rotating mechanism in the circumferential direction; the rotating mechanism comprises baffle bases, baffle supportsand stretchable rods, the baffle bases are fixed at the bottom of the atomization wheel through small base bolts, the bottom ends of the baffle supports are fixed on the side walls of the windage resistance baffles, and the top ends of the baffle supports are rotationally installed on the baffle bases through rotating shaft pin bolts. According to the high-speed-rotation atomizer with the vibration protection function, the braking time of the atomization wheel can be greatly shortened, and more-serious damage of acute vibration to the atomizer is reduced.

A device and method for perforating a dense bone layer. The device includes a vibration generator for generating mechanical vibration, in particular ultrasonic vibration, and an instrument with an elongated shaft and a distal end piece including a perforator. The distal end piece is arranged at a distal end of the shaft and the proximal end of the shaft is connected or connectable to the vibration generator. The perforator has the form of a solid or a hollow cylinder. The vibration generator, the shaft and the distal end piece are adapted to each other for the shaft to transmit, when connected to the activated vibration generator, mechanical vibration from the vibration generator to the distal end piece and for vibrating the perforator in a direction parallel to its cylinder axis.

The efficient metal square and rectangular pipe automatic cutting machine comprises a base, a containing groove is formed in the center axis of the top of the base, and a plurality of small holes are formed in the outer wall of the top of the containing groove. According to the efficient automatic cutting machine for the metal square and rectangular pipes, when a rectangular pipe is cut by a cutting blade, vibration can be generated, extrusion rods on the two sides can transversely move due to vibration, and an arc-shaped gas pipe can drive friction cleaning balls to transversely move back and forth under the effect of transverse movement of the extrusion rods; the friction cleaning ball is in clearance contact with the cutter face of the cutting blade in the transverse movement process, under the contact effect, waste chips adsorbed on the cutting blade can be cleaned, and the situation that a large number of waste chips are adsorbed on the cutting blade and the cutting effect is affected is prevented; in this way, the transverse friction force between the cutting blade and the friction cleaning ball can be reduced, and the cutting blade is prevented from being damaged.

The invention relates to an intelligent vibration reduction cooperative system applied to a high-speed train and a control method of the intelligent vibration reduction cooperative system, and belongs to the technical field of rail train control, the intelligent vibration reduction cooperative system comprises vibration reduction units, the vibration reduction units are arranged in all carriages respectively, the intelligent vibration reduction cooperative system is characterized by further comprising a sensing unit and a cooperative controller, and the sensing unit comprises a tilt angle sensor and a speed sensor; the sensing unit is used for detecting the gradient and the speed of a train, the output end of the sensing unit is connected with the signal input end of the cooperative controller, and a time delay module is arranged between every two carriages and used for controlling the train according to the time difference when each carriage of the train passes through the same point. The damping coefficient output by the damping unit of each carriage is adjusted by adjusting the damping coefficient output by the damping unit of each carriage, the wheel state can be actively adjusted to adapt to the rails according to the actual condition of the railway, the acting force between the rails and the wheels is reduced when the motion state is changed, the service life of the wheels and the rails is prolonged, and the comfort and running safety and stability of the train are improved.

The invention provides a vehicle dynamic balance tensioning method and a vehicle dynamic balance tightening device on a chassis dynamometer in an anechoic room. The vehicle dynamic balance tensioningmethod comprises the steps of: establishing a coordinate system, calculating pre-tightening force initial values of four steel chains connected to front and rear traction rods of a vehicle according to a vehicle driving force and a vehicle stress state when the vehicle is stationary on the chassis dynamometer, and pre-tightening the steel chains; running the vehicle according to a specified working condition; acquiring tension of the four steel chains in real time; retarding a condition that a resultant external force in an inertia balance force system is zero as a constraint condition, regarding the square minimization of a resultant external moment as an objective function, and calculating tension adjustment values of the four steel chains, so as to adjust tension of the steel chains; and launching a noise test when determining that the objective function is less than a set value. The vehicle dynamic balance tensioning method and the vehicle dynamic balance tightening device realizethe balanced fixation of a tested vehicle on the chassis dynamometer, reduce the possibility of vehicle swing and lateral friction between tyres and the surface of a drum in the testing process, reduce the additional tyre noise, provide a more realistic simulation environment for indoor noise measurement, and improve the measurement precision.

The invention particularly relates to a double-yarn guide device of a winding machine. The double-yarn guide device comprises a first reciprocating yarn guide device and a second reciprocating yarn guide device, the first reciprocating yarn guide device comprises a first reciprocating mechanism and a first yarn guide mechanism, and the first yarn guide mechanism is fixedly connected to the first reciprocating mechanism through a first sliding block connecting piece; the second reciprocating yarn guide device comprises a second reciprocating mechanism and a second yarn guide mechanism, and the second yarn guide mechanism is fixedly connected to the second reciprocating mechanism through a second sliding block connecting piece; and fibers are led in through a yarn guide wheel, sequentially pass through the first yarn guide mechanism and the second yarn guide mechanism and are wound on a spindle of the winding machine, and the first reciprocating yarn guide device and the second reciprocating yarn guide device are controlled through a controller and achieve synchronous reciprocating motion. The first reciprocating yarn guide device and the second reciprocating yarn guide device are controlled through the controller and achieve synchronous reciprocating motion, the angle of reciprocating swinging of the fibers driven by the reciprocating yarn guide devices is reduced, and yarn rubbing and yarn damage are avoided.

The invention relates to the field of washing equipment and aims at providing a low-pressure maintaining high-pressure washing device. The low-pressure maintaining high-pressure washing device comprises a high-pressure pump which is provided with a motor. The low-pressure maintaining high-pressure washing device further comprises a low-pressure maintaining device. The low-pressure maintaining device comprises a valve body, a low-pressure maintaining valve and a control switch, wherein the valve body is provided with a pressure relief outlet, a high-pressure outlet and a high-pressure inlet communicating with an outlet hole of the high-pressure pump, the rear end of the low-pressure maintaining valve extends out of a valve rod at the rear end of the valve body, and the control switch is provided with a drive rod which is opposite to the rear end of the valve rod and is electrically connected with the motor. According to the low-pressure maintaining high-pressure washing device, when a high-pressure washing machine pauses, the high-pressure pump can achieve pressure maintaining with relatively low pressure, and no damage is caused.

The invention discloses an optical cable stabilizing frame used during soft optical cable text printing and an implementation method thereof. The optical cable stabilizing frame comprises an optical cable stabilizing frame main body, wherein an optical cable stabilizing plate, a supporting rod, a first-stage optical cable pressing wheel, a meter counting wheel, a second-stage optical cable pressing wheel, a first-stage optical cable stabilizing wheel, a supporting plate, a first-stage angle adjusting rod, a second-stage angle adjusting rod, a back wheel, a coding wheel and a nozzle are arranged on the optical cable stabilizing frame main body; the first-stage optical cable pressing wheel is fixedly arranged on the leftmost side of the optical cable stabilizing plate, and the meter countingwheel is arranged at the process rear stage of the first-stage optical cable pressing wheel; the back side of the meter counting wheel is in communication with the back wheel, and the lower end of the back wheel is rotationally connected with the upper end of the coding wheel; the supporting plate is arranged on the right side of the back side of the optical cable stabilizing plate, the first-stage angle adjusting rod is vertically arranged and fixed on the supporting plate, the upper end of the first-stage angle adjusting rod is vertically arranged on the second-stage angle adjusting rod inan embedding mode, and the tail end of the second-stage angle adjusting rod is vertically arranged on a three-stage angle adjusting rod in an embedding mode. According to the optical cable stabilizingframe used during soft optical cable text printing and the implementation method thereof, in actual use, the structure is firm, the optical cable body is stable, the text printing effect is good, slipping is avoided during meter counting, the accuracy is high, and the optical cable stabilizing frame and the implementation method thereof are suitable for popularization and application.

The invention relates to the field of industrial nondestructive testing, in particular to an online detection robot control system based on a neural network. The lower computer comprises an stm32 singlechip minimum control system, an SRAM (Static Random Access Memory) memory extension, a starting mode setting interface module, a USB (Universal Serial Bus) communication serial port I, an ultrasonic sensor, a buzzer, a switching circuit module, a serial port communication module and a stepping motor driver, and the upper computer adopts a pyAI-K210 singlechip and comprises a camera, an LED (Light Emitting Diode) indicator lamp, an LCD (Liquid Crystal Display), a minimum control system and the like. According to the method, the surface defects can be detected, the recognized defects can be classified, manual defect information processing is reduced, a basis is provided for repairing of various types of defects, and therefore extension of human vision is achieved, and manpower and material resources are reduced and saved.