33results about How to "No lubrication required" patented technology

The invention discloses an extrusion cutting type multi-particle size adjustable granulating machine. The extrusion cutting type multi-particle size adjustable granulating machine comprises a stirring cylinder, wherein the stirring cylinder is arranged on a base, a spiral propeller is arranged in the stirring cylinder, and a material inlet hopper is arranged at the upper end of the stirring cylinder; the spiral propeller is connected with a propelling motor; a granulating disc is arranged at the front end of the stirring cylinder; conical granulating sleeves are uniformly arranged on the granulating disc, and are sheathed on an adjusting disc; a cutting tool disc is arranged at the front end of each conical granulating sleeve, and is fixedly arranged on a fixed disc; the fixed disc is connected with a cutting motor, and the cutting motor is arranged on a slide base; the slide base is connected with a screw rod in a bracket, and the bracket is connected with the base; an adjusting rotary button is arranged at the front end of the screw rod; each conical granulating sleeve is in a conical sleeve shape, and adjusting grooves are uniformly arranged at the front end of each conical granulating sleeve; mounting grooves are arranged on the inner walls of both sides of each adjusting groove; an arc-shaped movable plate is arranged in each mounting groove; outlet tool blades are uniformly arranged on the inner wall of the front end of each conical granulating sleeve. The extrusion cutting type multi-particle size adjustable granulating machine has the advantages that the quick and high-efficiency granulating function is realized, the granulating size can be adjusted, the adjusting range is wide, and the flexibility and convenience in use are realized.

Proposed is a fluid-actuated diaphragm drive (1) which has two dome-shaped housing parts (5, 6) which are mounted on one another with two openings, which face towards one another, arranged coaxially. The two housing parts (5, 6) are fixed to one another, at their side surfaces (5b, 6b) which adjoin one another, by means of a bayonet connection device (45). The two housing parts (5, 6) are designed such that the locking projections (46a, 46b) of the bayonet connection device (45) are covered so as not to be visible from the outside.

The invention discloses an upper platform extending limiting device of an aerial work platform. The upper platform extending limiting device comprises an upper platform body and an extending part. The extending part is installed in the upper platform body and can slide in the length direction of the upper platform body. A limiting assembly is arranged between the upper platform body and the extending part. The limiting assembly comprises a locking mechanism and a limiting block. The locking mechanism is installed on the extending part. The limiting block is installed on the upper platform body. The locking mechanism slides to the limiting block of the upper platform body along the extending part to achieve limiting fixing. The upper platform extending limiting device is simple in structure and convenient to control, and the construction safety of personnel is improved.

The invention relates to apparatus (1) which perform stretching and blow molding on a plastic material perform to form a plastic material container. The apparatus (1) has a bearing assembly (2) used for bearing a blow-molding die (3) comprising at least two housing components (4, 5) and a base component (6), and has a base component clamping assembly comprising a base component accommodating mechanism (11; 111) and used for holding a holding assembly (12, 13 and 14, 15; 114, 115 respectively) of the base component accommodating mechanism (11; 111), wherein the base component accommodating mechanism (11; 111) can be clamped to the holding assembly (12, 13 and 14, 15; 114, 115 respectively) via a forced interlocking fastening part (18; 118), and the forced interlocking fastening part (18; 118) has a forced interlocking area (22) made of ceramic materials.

The invention discloses a rigid rotor hub of a helicopter. A plurality of variable-pitch arm modules are arranged around a center piece module; paddles are fixed on the variable-pitch arm module; eachvariable-pitch arm module comprises a paddle mounting base, an outer side radial laminated elastic bearing, a thrust laminated elastic bearing and an inner side radial laminated elastic bearing; thepaddles are fixed on the paddle mounting bases; the outer side radial laminated elastic bearings and the inner side radial laminated elastic bearings have the same structure; an inner ring of each outer side radial laminated elastic bearing is fixed on the corresponding paddle mounting base, and an outer ring of each outer side radial laminated elastic bearing is fixed on the center piece module;an inner ring of each inner side radial laminated elastic bearing is fixed on the corresponding paddle mounting base, and an outer ring of each inner side radial laminated elastic bearing is fixed with the center piece module; each thrust laminated elastic bearing is composed of laminated elastic layers stacked in the axial direction, the inner side of each thrust laminated elastic bearing is fixed to the corresponding paddle mounting base, and the outer side of each thrust laminated elastic bearing is fixed to the center piece module; and the axes of the three elastic bearings of each variable-pitch arm module are collinear. The rigid rotor hub has the advantages of being long in service life and free of lubrication and maintenance, having no abrasion, and the like.

The invention relates to a positioning workbench, in particular to an ultra precision positioning workbench with nanometer resolution. The ultra precision positioning workbench with the moving precision and positioning precision can be in the sub micron or even nanometer level. The workbench comprises a soft hinge workbench body and a piezoelectric ceramic micro displacement device and is characterized in that a dual frequency laser interferometer (SJD5) is adopted for detection, and a loop control system is obtained through a computer and a phase meter; digital signals are transmitted the computer and are converted and amplified through a D/A converter, the 0 to 1000V variable voltage with the step of 1 V is produced to drive the piezoelectric ceramic to stretch, and the piezoelectric ceramic drives the soft hinge workbench body to perform micro displacement.

The invention discloses a pressure retaining valve used for an automobile tire inflation and deflation system. The pressure retaining valve comprises a valve deck, a valve body, a valve seat, a first conical spring, a membrane piece, a gasket, a first O-shaped ring, a silencer, a nozzle, a rubber blanket, a second conical spring, a second O-shaped ring, a movable iron core, a stationary iron core, a third O-shaped ring, a wiring harness plug and an electromagnetic coil; the valve deck is installed on the valve body, the valve seat is installed at the bottom of the valve body, the membrane piece is installed below the valve deck, the first conical spring is installed at the position of the membrane piece, the gasket is installed below the membrane piece, the movable iron core is installed below the nozzle, the second conical spring is installed at the position of the nozzle, the rubber blanket is installed at the top of the movable iron core, the stationary iron core is installed at the bottom of the movable iron core, and the silencer is communicated with the bottom of the stationary iron core through an air flue. According to the pressure retaining valve, the reliability is good, the membrane piece is adopted for controlling the opening and closing of a gas port, compared with a piston type valve, the durability is better, the high temperature resistance and the low temperature resistance are better, and no lubrication is needed; a solenoid valve is adopted for conducting pilot control to an air chamber over the membrane piece, the power is low, and the energy consumption is little.

The invention provides a whistle analysis type wind power monitor. The whistle analysis type wind power monitor comprises a base, wherein a fixed cuboid column is arranged on the top of the base in an extension mode, an air inlet hole is formed in each of the four side faces of the cuboid column, the air inlet holes are formed in the positions with the equal horizontal heights, the portion, arranged inside the cuboid column, of each air inlet hole is connected with a flow guiding pipe, each flow guiding pipe is connected with a whistle, a sound pick-up is assembled on each whistle in a matched mode, the sound pickups are electrically connected with a common arithmetic unit, the arithmetic unit calculates the wind direction and the wind speed according to audio signals picked up by the sound pickups, and the monitoring result is sent to a display and is displayed by the display. The whistle analysis type wind power monitor can resist severe weather environments, and cannot be easily damaged, and high measurement accuracy can be kept for a long time.

The invention discloses a die blank holder device and an application method thereof. The die blank holder device comprises a shell and a die body. The die body comprises a male die, a female die, a magneto-rheological elastomer blank holder, an excitation coil, a coil framework and a permanent magnet. The excitation coil is wound on the coil framework; the permanent magnet is fixedly arranged in the coil framework; the magneto-rheological elastomer blank holder is arranged in the coil framework and is fixedly connected with the permanent magnet; the female die is arranged at the inner side ofthe magneto-rheological elastomer blank holder, and the male die is connected with a stamping mechanism to stamp a plate on the female die; the excitation coil generates a magnetic field after being electrified; and the size of the magnetic field is controlled, and the rigidity of the magneto-rheological elastomer blank holder is adjusted so as to control the blank holding force and the distance between the magneto-rheological elastomer blank holder and the plate. By means of the material characteristics of the magneto-rheological elastomer, the blank holder force in deep drawing forming is controlled, a workpiece is prevented from being broken in deep drawing forming, the workpiece forming rate is increased, lubrication is not needed, the cost is reduced, the structure is compact, and thepracticability is high.

A detachable pipe wrench comprises a wrench body. The wrench body comprises an upper shell and a lower shell. A gear cavity is formed inside the upper shell and the lower shell. The middle of the upper shell is concaved downwards to form a circular groove, a circular through hole is formed in an upper bottom plate of the circular groove, three long through grooves and an inserting hole are formed in a bottom plate of the lower shell, three notches are formed in the bottom of the side wall of the lower shell, the notches are communicated with the tail ends of the long through grooves, long-strip-shaped grooves are formed in the two side walls of clamping blocks, and the two side walls of the long through grooves are inserted into the long-strip-shaped grooves in a sleeved mode. A Teflon layer is fixed on the lower bottom face of the upper bottom plate, the gear cavity is internally provided with a main bevel gear and a drive bevel gear which are meshed with each other, and the main bevel gear is arranged between the Teflon layer and the clamping blocks. The detachable pipe wrench is simple in structure, a user can hold two wrench arms to carry out double-hand operation by hands, efficiency is improved, the three clamping blocks and a circular elastic block are used for carrying out further clamping, the clamping effect is improved, and a pipe is prevented from skidding when rotating.

The present invention discloses a deep slot type linear electric motor running with single-phase capacitance. The electric motor includes two levels: the primary and the combined secondary, wherein the primary unit is positioned along the transmitting line in an interval distribution modus. The characteristics are: 1) four deep grooves are positioned on each primary iron core, wherein the ratio of the highness and the width of the groove is 6~12 and the windings are layered in the groove; 2) the primary main winding is unsymmetrical with the secondary winding which is connected to a capacitor C in series, and the turn number is not identical to the line radius, and the main winding is connected to the secondary winding which is connected to a capacitor C in series in parallel and is connected to the electric power source gate through a controllable switch; 3) the secondary winding is in a single phase running relative to the primary and has a cuprum-iron compound structure. The linear electric motor drives the load directly and has a simple structure, a small starting current, a low noise, a high efficiency and a high reliability. The single-phase running of the linear electric motor satisfies the requirement of the physical distribution conveying line and is adaptable for the production and the situation in which the physical distribution line in commercial use is running in a straight line of any types of linear electric motors and is especially adaptable for the physical distribution lines in supermarket or medicine use of common people.

A precise mobile platform without guide is provided, which belongs to the technical field of mechanical equipment. The technical matters required to be solved is to provide a precise mobile platform without guide. The technical solution to solve the problem are composed of a movable table, a pullback spring, a driving mechanism, a base, a deformed plate, an upper bush, a proportional handspike, a move-down plate, a lower bush and other elements. The proportional handspike, a rigid straight bar with spherical surfaces at both ends and in the middle, is symmetrical distributed under the movable table to form a supporting structure. The base, deformed plate and the move-down plate form an internal parallelogram structure, while the move-down plate, lower bush and movable table shapes an external parallelogram structure. The two composite parallelogram structures guarantee an only rectilinear translation motion forward and backward without seesaw motion when the movable table is in motion, thus to realize a high precision rectilinear motion of the functional elements on the mobile platform.

The invention discloses a magnetic suspension bearing isolation rotor structure which comprises a base, magnetic suspension bearings, a rotor and a stator, wherein the magnetic suspension bearings and the stator are supported on the base, and the rotor is arranged in the magnetic suspension bearings and the stator in a penetrating manner. The magnetic suspension bearing isolation rotor structure further comprises a fluid container and a sheath, wherein the sheath is in a bucket-shaped structure with one end opened and the other end sealed; the sheath is arranged between the magnetic suspension bearings and the rotor and between the stator and the rotor in a penetrating manner; the open end of the sheath stretches out of the base and is connected with the fluid container; an inner cavity of the sheath is communicated with an inner cavity of the fluid container; and the left end of the rotor stretches into the inner cavity of the fluid container. The magnetic suspension bearing isolation rotor structure is good in sealing effect, long in service life and simple in structure; the sealed magnetic suspension bearing isolation rotor structure is free from limitation of the rotating speed and the linear surface speed of the rotor; except the rotor and the sheath, the other parts are free from the influence from a sealed fluid, and have no special requirements on structures and performances of used materials; and the magnetic suspension bearings require no lubrication.