97results about How to "Reliable disengagement" patented technology

A synchronizer clutch assembly includes a clutch hub which is axially movably mounted on a shaft, a gear which is axially spaced from the hub and which is journally mounted on the shaft and rotatable independent thereof, one of the hub or the gear having a conical friction surface formed thereon, and a synchronizer ring positioned between the hub and the gear. The synchronizer ring is coupled to the hub or the gear for rotation therewith and has a complementary conical friction surface formed thereon which is engageable with the conical friction surface on the hub or the gear. The synchronizer ring is composed of a plurality of separate arcuate segments arranged in a ring, which are movable between a first expanded configuration and a second, contracted configuration.

The group of useful inventions concerns the field of medical technology, more specially to surgical instruments for catching of thromoemboli and to devices for their transport to an installation site. The a set for preventive maintenance of a thromboembolism of a pulmonary artery comprises a filter and a mounting device for its installation and extraction. In the mounting device for the installment of the filter the pusher (3) is provided with a movement limiting stop (4), and its working block is made in the form of a capsule (5) with an axially movable therein clamping cartridge (6) and a mechanism for its movement. The working block (10) of the extractor device is made in the form of a casing (13) with an aperture and a loop extending therefrom in perpendicular direction to the axis of the extractor. In the filter, the free ends (19, 20) of the fixing and centering elements are bent outwards. The threads (23) of both elements have an identical radius of bend at the end (18). The free ends (20) of the centering element have blunted ends and are made in the form of a circular-arch segment preventing the blunted ends of the fully unfolded centering legs from touching the walls of the vena cava and being directed to the centre of the lumen of the vein. The free ends (19) of the fixing element (17) are provided with protective areas (20) located between the conical part and the bent outwards fastener part and in parallel to the axis of the vein.

The invention discloses a rotary lifting-type three-dimensional garage which comprises a parking frame, a carrier and vehicle carrying plates. The carrier is provided with a rotary driving device used for driving a carrier upright to rotate, a lifting seat is arranged on the carrier upright, a lifting driving device can drive the lifting seat to ascend and descend along the carrier upright, a lifting block is fixed on the lifting seat, each vehicle carrying plate comprises a vehicle carrying plate body and a sleeve platform, and the lifting block is coincident with each sleeve platform in shape and can be inserted into the same. The invention further discloses a vehicle carrying plate docking and lifting device for the three-dimensional garage. The vehicle carrying plate docking and lifting device comprises the lifting block and the vehicle carrying plates, and by applying the vehicle carrying plate docking and lifting device in the three-dimensional garage, one carrier can be matched with multiple vehicle carrying plates. The invention further discloses a method for parking vehicles in and getting the vehicles from the rotary lifting-type three-dimensional garage. By the structure of the rotary lifting-type three-dimensional garage, parking and getting the vehicles can be completed only through two actions including lifting and rotating.

The invention discloses a water hammer air valve and a water hammer gas discharging method during pipeline use. The water hammer air valve comprises a valve body, a bonnet and a protective cover, wherein the bonnet is provided with an opening, the protective cover is disposed on the opening, the valve body is provided with a valve opening for being communicated with a pipeline, a high-speed gas feeding and discharging device which is used for discharging gases stayed in the pipeline during water filling to the outside and shutting down the valve after pipeline water filling is completed is disposed in the inner cavity of the valve body, the output end of the high-speed gas feeding and discharging device is communicated with the outside through the opening of the bonnet, and the valve opening of the valve body is communicated with a bottom gas discharging throttling device for limiting the gas displacement of the pipeline to the inner cavity of the valve body; a trace gas discharging device for discharging mixed, residual and/or precipitated gases in the pipeline to the outside through the opening of the bonnet after the high-speed gas feeding and discharging device shuts down the valve is further disposed in the high-speed gas feeding and discharging device. By the water hammer air valve, water hammer reduction and pipeline safety protection are achieved, blowing blocking during high-speed gas discharging is avoided, and valve closing water hammer is eliminated.

The invention provides a parachute opening force measuring system and method applied to a spacecraft airdrop test. The system is characterized in that one end of a pulling force sensor is mounted and connected to a parachute suspender through a first adapter connector, and while the other end of the pulling force sensor is abutted and mounted to a parachute connecting and disconnecting mechanism on a cabin body through a second adapter connector and an adapter connecting suspender; a data cable on the pulling force sensor is mounted and fixed to the cabin body through a separable electric connector, wherein the separable electric connector sleeves a rope pin of the second adapter connector through a pulling rope. According to the parachute opening force measuring system and method applied to the spacecraft airdrop test, the parachute is pulled out of a parachute cabin, a closed opening is released and then the parachute is fully charged with air; the puling force sensor measures the parachute opening force during dropping the parachute and inputs the data to an inner recorder for storing through the data cable by utilizing the separable electric connector; the pulling rope of the separable electric connector is pulled while the parachute is separated from the cabin body according to the preset working program, and thus the separable electric connector is separated from the cabin body; when the cabin body arrives at the ground, the data can be read from the inner recorder.

The invention discloses a hobbing clamp for clamping a plurality of parts with big gear rings. The hobbing clamp for clamping the parts with the big gear rings comprises a pressing portion and a centering portion, wherein the centering portion comprises a base, a first spring, a locating sleeve, force transmission blocks, a lower pull rod and the like, a support is arranged on the top surface of the base, the support is sleeved with a supporting disk, the pressing portion comprises an upper pull rod and a press plate, the upper pull rod is sleeve with a disk spring and a pressing sleeve in sequence from top to bottom, the disk spring and the pressing sleeve are sleeved with a bushing in a spaced mode, a supporting plate is arranged at the bottom of the press plate, the top surface of the supporting plate is a big-end-down conical surface, the conical surface is attached to the bottom surface of the press plate, the lower end of the supporting plate is fixedly sleeved with a gland, the lower end of the upper pull rod is provided with a T-shaped portion, and the T-shaped portion penetrates through a small-diameter section of a center hole of a taper sleeve and a center hole of a reset spring, and then is clamped into a large-diameter section of a cylindrical hole formed by inner surfaces of all the force transmission blocks. According to the hobbing clamp for clamping the parts with the big gear rings, centering of workpieces with big gear rings can be well carried out through expansion blocks, the workpieces can be tightly pressed at the same time, and centering accuracy can be ensured.

The invention discloses a locking device with the automatic unlocking function, belongs to the technical field of mechanical locking devices, and aims to solve the problems that working efficiency is low and operation is inconvenient in the prior art. The locking device comprises a guide base, a supporting base plate, a telescopic rod and a locating hole base, wherein the lower end of the guide base is fixedly connected with the supporting base plate, a square guide cavity is formed in the middle of the guide base, a limiting hole is formed in the upper portion of the guide base, and an unlocking mechanism is arranged in the limiting hole; the telescopic rod is located in the square guide cavity and can extend and contract freely in the square guide cavity, the cross section of the middle of the telescopic rod is square, the cross sections of the two ends of the telescopic rod are round, and a cylindrical guide hole is formed in the middle of the square cross section; a locking mechanism is arranged in the cylindrical guide hole, a compression spring is arranged at one end of the telescopic rod, one end of the compression spring makes contact with the square cross section of the middle of the telescopic rod, the other end of the compression spring makes contact with a compression spring base fixed to the guide base, and an unlocking limiting plate is fixed to the other end of the guide base; the telescopic rod extends and contracts in the square guide cavity to be matched with or separated from a locating hole in the locating hole base.

The invention discloses a spindle locking device and relates to a precise spindle locking device. The spindle locking device consists of an internal expansion sleeve, an external expansion sleeve, a spring disc, a piston block and a fixed post, a fixing bolt and a fixing bolt. The internal expansion sleeve is fixed on a spindle and can rotate together with the internal expansion sleeve. The external expansion sleeve is sleeved on the internal expansion sleeve. Conical surfaces which are matched with each other are arranged between the internal expansion sleeve and the external expansion sleeve. The external expansion sleeve is sleeved on the internal expansion sleeve through the conical surfaces. The spring disc is sleeved on the internal expansion sleeve. The external expansion sleeve is positioned between a rear flange of the spindle and the spring disc. The spring disc is fixed with the rear flange through the fixed post and the fixing bolt. The spring disc and the external expansion sleeve are locked through the locking bolt. The piston block is arranged between the rear flange and the external expansion sleeve. Using the deformation characteristic of the spring disc and a taper locking mode, the locking device avoids any influence on the precision of the spindle when the spindle is locked and absolutely reliable locking is achieved, thereby ensuring the precision of processed parts, the precision of the spindle and the service life of the spindle.

The invention discloses a discharging device, which comprises a support and a discharging scraper rotating around an upper pivot of the support. When the discharging scraper rotates to contact the bottom of a trough, the discharging device moves from the end part of the trough to the middle for discharging; and when the discharging scraper rotates to leave the bottom of the trough, the discharging device retreats to the end part of the trough and cannot push a residual feed at the bottom of the trough back to the end part of the trough. The discharging device can automatically clean two ends of the trough thoroughly without leaving dead angles, and is connected with a feed levelling device through a magnet, so that the discharging device and the feed levelling device are connected and separated more reliably, and the safety is higher.

Disclosed over-heat over-voltage protective device, comprises a housing, at least a voltage-sensitive resistor, at least a top pin and a low pin. It is characterized in that: a heat release unit is amounted between said voltage-sensitive resistor and the top pin, which is also on the surface of one electrode of said voltage-sensitive resistor; a deterioration indicating pin is extended from said voltage-sensitive resistor; said housing is filled with epoxide resin to form a whole mold. The voltage-sensitive resistor is in the cascade connection with the heat release unit while the release point extends from the center of voltage-sensitive surface to make the voltage-sensitive resistor which is deteriorated release from the electrified wire netting automatically and reliably, for avoiding the short circuit between electrodes and improving the protective function; the voltage-sensitive resistor and the heat release unit are contained in one housing, which utilizes the surge absorbing function of voltage-sensitive resistor and the inner operation of heat protective release unit to concentrate the heating points, shorten the heat transmission distance, and confirm the fast, reliable release between the deteriorated voltage-sensitive resistor and the electrified wire netting.

The invention provides a device capable of replacing a valve under pressure. The device comprises a plugging device, a combining part, a blowout prevention pipe, a hydraulic cylinder, a piston rod and an operating rod. One end of the combining part is detachably connected to the plugging device, and the blowout prevention pipe contains the plugging device and the combining part and is connected with the hydraulic cylinder. The plugging device is mainly composed of a sealing rubber sleeve, a slip bowl seal assembly, a differential pressure type piston and slips, the slips can be automatically unfolded through fluid pressure, and thus safe bowl seal is achieved. One end of the combining part is connected with the hydraulic cylinder through the piston rod and the operating rod which penetrate through the blowout prevention pipe. The invention further provides a method for replacing a valve under pressure with the device capable of replacing a valve under pressure. The device achieves seal, bowl seal, seal removal and internal pressure balance of a tool, the complex functions can be continuously and automatically completed in one travel, and thus the device is easier and more reliable to operate. Uncertainty caused by manual operation is reduced, safety in the construction process is guaranteed, no pollution will be caused to the environment, and construction cost is greatly reduced.

The invention relates to a method for preparing a polyurethane fiber guide wheel used for cutting a silicon slice. The method comprises the following steps of: mixing 0.5-1.0 part of carbodiimide and 3-5 parts of calcium sulphate crystal whisker with 100 parts of polyether polyol, then stirring, heating and dehydrating the materials in a reaction kettle, and adding 30-50 parts of isocyanate to the reaction kettle for a polymerization reaction to prepare a prepolymer and defoaming the prepolymer; mixing the defoamed prepolymer with a liquid polyurethane solidifying agent in the ratio of 100: (15-30) in a casting machine to prepare a polyurethane liquid material, placing an assembled die and a metal spindle into a heating box for heating, and pouring the polyurethane liquid material to a hollow cavity between an adhesive layer and the die and to a hooped pouring opening; and placing the die poured with the polyurethane liquid material into the heating box, then carrying out vulcanization forming treatment, demolding, carrying out additional vulcanization, and machining a guide groove on the surface of a polyurethane coating. The method for preparing the polyurethane fiber guide wheel used for cutting the silicon slice has the characteristics of light weight and improved production efficiency and quality of the guide wheel.

A locking mechanism of connector comprises a first and second locking part (15, 23). The first and second locking part (15, 23) are respectively formed on the shells of the first and second connector (10, 20) intercalated with each other. The first and second connectors are intercalated with each other at the right position to be locked at intercalating status. A depressed part (14) or groove for keeping the disarm state is formed on the inner face of the first connector. When the second locking part moves to the position for releasing the intercalating relation with the first locking part, the second locking part is kept at the position.

The invention discloses a safe releasing mechanism which comprises a connecting shell, a retaining ring, a movable spring seat, a flexible chuck, a spring, an inner sleeve, an outer sleeve, a breakable pin, a fixing ring, a tow rope, a tapered slider, a compression sleeve and the like. The safe releasing mechanism is mounted on a winch of a navigation body in high-speed navigation, and absorbs certain impact energy to reduce influences of internal impact to a take-up towing system when an underwater carrier connected with the navigation body encounters accidents and then towing tension of the tow rope is increased. When the towing tension is increased to certain value, the breakable pin in the mechanism is broken off under the action of the towing force, so that the towing rope can be reliably separated from the winch, the high-speed navigation body can navigate normally, overturning accidents are avoided, and injuries of operators due to breakage of cables can also be avoided.

A water hammer-proof air valve that has a valve body and a bonnet, that are fixedly connected, a valve opening is provided on the valve body, and a high-speed intake and exhaust device is provided in an inner cavity of the valve body. A bonnet opening is provided on the bonnet, an output end of the high-speed intake and exhaust device penetrates the bonnet opening and is communicated with a high-speed exhaust throttling device for limiting an exhaust amount of gas of the high-speed intake and exhaust device, an output end of the high-speed exhaust throttling device is communicated with an outside air, and a trace exhaust device for discharging the gas separated out from the pipeline to the outside through the high-speed exhaust throttling device after the high-speed intake and exhaust device closes the valve is further provided in the high-speed intake and exhaust device.

The invention provides a parallel communication bus interface. The interface comprises a connector which is arranged for connecting the parallel communication bus, a master unit of the parallel communication bus and a slave unit of the parallel communication bus, a power supply management circuit which is arranged for strictly controlling the connection sequence of an earth wire, a power supply wire and a signal wire and strictly controlling the delay length for connecting the earth wire to the system and electrifying, and a bus management circuit which is arranged for controlling the master unit of the parallel communication bus or the slave unit of the parallel communication bus to be connect with or separate from the parallel communication bus. The bus management circuit is matched with an address selecting signal sent by the master unit of the parallel communication bus and an electrified signal sent by the power supply management circuit so as to ensure only one slave unit of the parallel communication bus is connected with the parallel communication bus at any moment. The invention provides a parallel communication bus interface which is fit for the parallel communication bus, supports safely and unperturbed on-line connection or cut-off of the bus device and overcomes the complexity for matching the software with the chip of the prior art.