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121results about How to "Control stroke" patented technology

Pressure-maintaining and regulating hydraulic control system of roll balance gear

The invention discloses a pressure-maintaining and regulating hydraulic control system of a roll balance gear and relates to a hydraulic control system of a steel rolling machine. The pressure-maintaining and regulating hydraulic control system solves the problems of unreliable pressure maintenance, inconvenient equipment debugging and no pressure protection of a control loop in the prior art. The pressure-maintaining and regulating hydraulic control system is characterized in that: a hydraulic control loop comprises a pressure-maintaining loop of the roll balance gear and an adjusting loop of the roll balance gear; the pressure-maintaining loop is formed by connecting a pressure-reducing valve 11, an I-number electromagnetic directional valve 12, an energy accumulator 16, a safety valve 17, an I-number pressure meter 15, an II-number pressure meter 18 and a hydraulic oil pipe according to the conventional connecting method; the adjusting loop is formed by connecting an II-number electromagnetic directional valve 19, a one-way throttle valve 13, a pressure relay 14, a hydraulic locking valve 20, an overflow valve 21 and the hydraulic oil pipe according to the conventional connecting method; and the pressure-maintaining loop and the adjusting loop are separated and associated by using a hydraulic one-way valve 22 and a one-way valve 23.
Owner:TAIYUAN HEAVY IND

Chemical material mixing device

The invention discloses a chemical material mixing device and mainly relates to the technical field of chemical material mixing. The device comprises a machine frame, wherein a first guide rail is horizontally arranged on the lower portion of the machine frame, a first sliding block is arranged on the first guide rail, a first nut is arranged on the first sliding block, and a first lead screw is arranged in the first nut; a connecting plate is arranged on the first sliding block, a mixing cylinder is arranged on the connecting plate, a heat insulation cotton layer is arranged on the side wall of the mixing cylinder, and an electromagnetic induction heating coil is arranged on the heat insulation cotton layer; a movable supporting frame is horizontally arranged above the mixing cylinder, a cover is arranged on the movable supporting frame, a rotary shaft is arranged in the middle of the cover, a stirring paddle is arranged on the rotary shaft, and a cleaning device is arranged on the movable supporting frame. The device has the advantages that materials can be dried while being mixed, so that production cost is reduced and production efficiency is improved; materials left in the mixing cylinder can be cleared automatically, so that the labor intensity of workers is relieved.
Owner:HENAN INST OF SCI & TECH

Composite sandstone powder concentrator

The invention relates to a composite sandstone powder concentrator. The composite sandstone powder concentrator comprises a fan, a V-shaped separation device, a medium sand conical hopper, a cage rotor, a fine sand conical hopper and a cyclone separator, wherein a feeding port of the V-shaped separation device is obliquely communicated with a distribution device; multiple stages of scattering blocks with the number of the scattering blocks being increased stage by stage are arranged on one side of the interior of the distribution device; deflection blades capable of being adjusted in a deflection mode are arranged at the ends of first fixed scattering blades of the V-shaped separation device; telescopic blades capable of being adjusted in a parallel front-back displacement mode are arranged on the side portions of second fixed scattering blades of the V-shaped separation device; and a discharging port is communicated with the bottom of the medium sand conical hopper and provided with amaterial segregation device. Coarse sand, medium sand, fine sand and powder in sandstone are separated and collected in an environment-friendly manner by adopting composite powder separation, the distribution device scatters materials to form a uniform material curtain, and sand molds with different particle sizes and specified gradings in machine-made sand are accurately separated out by adjusting and controlling the movement time and stroke of the materials in the powder concentrator, so that accurate grading meeting specified requirements is achieved, the treatment capacity can be remarkably increased, and the separation efficiency and effect of a composite sandstone separator are improved.
Owner:盐城市盐富环保设备有限公司

Loading and unloading transmission device for machine tool

The invention discloses a loading and unloading transmission device for a machine tool. The loading and unloading transmission device comprises a speed reducer on the left part of an intermediate plate, wherein a driving chain wheel on the upper end part of an output shaft of the speed reducer is connected with a driven chain wheel by a chain; a pair of correlation switches for acquiring signals of a workpiece bracket reaching a grabbing position is arranged above the chain; a tray is arranged on a support top plate of the chain; the workpiece bracket is arranged on an upper tray; an air cylinder is arranged on the intermediate plate from front to back; and the rear end part of an air cylinder extension bar is provided with a horizontal baffle capable of blocking the tray by a vertical plate. According to the loading and unloading transmission device, a workpiece is driven by friction force to move with the chain and is blocked reliably by the horizontal baffle, and the retention position of the workpiece is fixed and accurate, so that a bunker device is matched with a feed claw of the machine tool to load and unload; and the workpiece is jacked by the loading and unloading transmission device according to requirements to reduce the integral height of the bunker device effectively, so that the workpiece is put on the workpiece bracket by workers, and the loading and unloading transmission device has a simple structure and is convenient to manufacture.
Owner:CHONGQING MACHINE TOOL GROUP

Self-adaption inner cylinder clamping manipulator

The invention discloses a self-adaptive inner cylinder clamping manipulator, which includes a chassis, a rotating shaft cooperating with the rotating shaft is arranged in the center of the bottom plate, a control disk is set on the rotating shaft, and at least three clamps are evenly arranged in a ring between the control disk and the chassis. holding unit; the clamping unit includes a radial slide seat fixedly installed on the chassis, a slide rail is provided on the radial slide seat for sliding cooperation with it, a connecting block is fixedly installed on the slide rail, and one end of the connecting block radially inward There is a sliding shaft, and the radially outward end of the connecting block is provided with a clamping head. The axis of the sliding shaft is parallel to the axis of the rotating shaft. The control panel is provided with a stroke groove corresponding to the sliding shaft, and the sliding shaft extends into the stroke groove. and cooperate with the stroke groove; the distance y between the centerline of the stroke groove and the axis of the rotating shaft satisfies: y=aθ+b, θ is the radial direction of any point on the centerline of the stroke groove relative to the axis of the rotating shaft and the distance between the stroke groove The angle between the point where the centerline is closest to the shaft axis and the radial direction of the shaft axis.
Owner:WENZHOU POLYTECHNIC

Semi-continuous piston type hydrate cake generating device

The invention relates to a semi-continuous piston type hydrate cake generating device, and belongs to the field of hydrate technology applications. The semi-continuous piston type hydrate cake generating device comprises a reaction kettle, a temperature control system, a numerical control system and a data collection system. A piston is installed in the reaction kettle, and the piston which does reciprocating motion can compress generated hydrates to be in the shape of a round cake; the temperature control system can precisely control the temperature of an air-bath operation desk and then control the temperature in the reaction kettle; the data collection system can collect temperature and pressure signals in real time and perform real-time analysis; the numerical control system controls a liquid source and a high-pressure gas source to inject quantificational liquid and gas into the reaction kettle and enables the pressure of the reaction kettle to reach a set value; in addition, the numerical control system controls a rotation-shaft motor to enable the reaction kettle to clockwise and anticlockwise rotate for 180 degrees at a certain rate, and therefore a gas phase and a liquid phase are fully mixed to promote generation of the hydrates; furthermore, the numerical control system can control a telescopic rod and a rotary telescopic type disassembly head to be conveniently disassembled.
Owner:DALIAN UNIV OF TECH

Die-cutter

The invention discloses a die-cutter comprising a rack, dies, an upper fixing plate, a lower fixing plate, a feeding device and a receiving device. The upper fixing plate and the lower fixing plate are mounted on the rack, the feeding device and the receiving device are arranged on the front side and the rear side of the rack respectively, the dies include an upper die and a lower die which are fixed on the upper fixing plate and the lower fixing plate respectively, positioning posts are arranged at four corners of the upper die, a downwards-concave step is arranged in the middle of the upper die, clamping plate grooves are further formed on two sides of the downwards-concave step, positioning ejection pins are arranged on the upper die on the inner sides of the clamping plate grooves, positioning grooves matched with the positioning posts on the upper die are formed at four corners of the lower die, two clamping plates matched with the clamping plate grooves are arranged on the lower die and fixed through adjusting bolts, positioning holes matched with the positioning ejection pins are formed on opposite inner sides of the two clamping plates, and gaps are formed between the opposite inner sides of the two clamping plates and the lower die. By the design of the die-cutter, labor intensity of operators is reduced, feeding speed is increased, and production cost is lowered.
Owner:SUZHOU DONGFU ELECTRONICS
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