61results about How to "Compression stability" patented technology

The invention discloses an embedded and check method of identification watermark, a relative system and application, wherein the embedded method comprises the calculation of digit fingerprint and the embed process of the digit fingerprint, which uses a digit fingerprint based on quantized average value to generate an identification watermark sequence, and embed the information of the watermark into an image block to generate a digit image with the identification watermark. And the check method comprises integrality check and distortion positioning, which extracts the information of the identification watermark to separate the digit fingerprint and the binary random sequence, check the data to realize the integrality check and distortion positioning. The invention has the advantages that the invention can process distortion positioning accurately on damaged compressed digit image, with high operation speed and all process in time domain, high safety for resisting impact, vector image, combine impact and test impact or the like.

The invention discloses an automatic dispenser for air-based tear gas bomb and relates to the technical field of security and protection. The automatic dispenser for the air-based tear gas bomb solves the problems that the existing rifle-hand tear gas bomb dispensing is incapable of precisely shooting to an appointed position and not obvious in subduing effect. The automatic dispenser comprises a multi-rotor aircraft, a connecting platform, a pull ring fixing fine-adjustment mechanism, a gas bomb, a gas dispensing mechanism, a main control board, a data transmission module, a power supply module, a Beidou satellite locating system, an air pressure gauge, a hand-held ground controller, a camera and a damper; the gas dispensing mechanism is fixed on the multi-rotor aircraft through the connecting platform, and the connecting platform is connected with the bottom of the multi-rotor aircraft through the damper. The automatic dispenser for the air-based tear gas bomb realizes to automatically dispense tear gas at some part in the air; the automatic dispenser for the air-based tear gas bomb is simple in structure, convenient to operate and strong in practicability.

The invention relates to the technical field of the oil-gas recycling and in particular to a cold-accumulated oil-gas recovery processing device. The cold-accumulated oil-gas recovery processing device comprises an oil-gas processing unit, a secondary refrigerant unit and a refrigerating unit. The oil-gas processing unit is capable of, through a precooler, firstly separating a part of water, and cooling to a low temperature and freeze-separating the water through a coiled-tube-type heat exchanger, at the same time, condensing heavy components in an oil gas as liquid in the low temperature, andseparating and extracting in a gas-liquid separator. The secondary refrigerant unit is capable of, through a heat exchanger 6, absorbing cooling capacity of a low-temperature refrigerant and storingin a low-temperature storage tank, and through the coiled-tube-type heat exchanger 4a / b, performing heat exchange with the oil gas, and providing the needed cooling capacity for oil-gas separation. The secondary refrigerant unit is capable of, through regulating a flow of a secondary refrigerant returned from a low-temperature storage tank 9 to a normal-temperature storage tank 7, regulating oil-gas processing load. The refrigerating unit is capable of generating the cooling capacity. The cooling capacity is transmitted to an oil-gas separating unit through a secondary refrigerant system. A whole technological process is simple, and easy to operate. Cold is accumulated through the secondary refrigerant to adapt fluctuation of an oil-gas discharge quantity. The cold-accumulated oil-gas recovery processing device is capable of maintaining stable operation of the device, recovering usable components, eliminating potential safety hazards, and reducing economic loss, and has a certain promotion value.

The invention provides a concrete filled steel tube roadside support system used for large-section gob-side entry retaining and a support method thereof. The system comprises Pi-type steel beams which are closely clung to a top plate, concrete filled steel tube stand columns which support the Pi-type steel beams of the top plate, elliptical ring bases which sleeve the lower parts of the concrete filled steel tube stand columns, and inclined hydraulic jacks with the elliptical ring bases acting as hinged pivots, wherein the end heads of the inclined hydraulic jacks support the Pi-type steel beams and metal meshes of the surface of the filling wall. A truss structure formed by the concrete filled steel tube stand columns has the main support effect on the top plate and controls subsidence and deformation of the top plate in cooperation with the filling wall. Moderate underframe sinking and pressure releasing can be performed by the concrete filled steel tube stand columns in the process so that stability of the concrete filled steel tube stand columns in a vertical direction can be increased, and then the hydraulic jacks, which are arranged in an inclined way with the elliptical ring bases acting as the hinged pivots, can provide relatively high acting force to support the Pi-type steel beams and the metal meshes of the surface of the filling wall.

The invention belongs to the technical field of K-TIG welding guns and discloses a magnetic control K-TIG welding gun based on water-cooled permanent magnets. The magnetic control K-TIG welding gun mainly comprises a cover body and a holding body connected to the lower portion of the cover body. The cover body and the holding body form a closed space and are fixed to the gun head of the welding gun. The radially and evenly distributed permanent magnets are arranged in the closed space, and water cooling devices are arranged around the permanent magnets. According to the magnetic control K-TIG welding gun, the permanent magnets are used for replacing electromagnets to construct a circular magnetic field to compress K-TIG welding electric arcs, thus the restraining effect and penetrability of the electric arcs can be enhanced; and meanwhile, the water cooling devices are arranged to wrap the permanent magnets so as to achieve the purposes of in-time cooling and demagnetization reduction, thus the stability of the obtained magnetic field is improved, and the electric arcs are restrained and controlled better.

The invention discloses an electromagnet-type horizontal linear vibration motor. The motor comprises a motor shell, and a bracket is connected to the lower portion of the motor shell. A stator assembly is connected above the bracket, and the stator assembly comprises a circuit board and a coil. The circuit board is connected above the bracket, and the coil is arranged on the circuit board; the coil is connected with the circuit board through spot welding, and a vibrator assembly is arranged in the machine shell; the vibrator assembly comprises a mass block, a cavity is formed in the mass block, magnetic steel is connected to the two ends of the interior of the cavity, the coil is located between the two magnetic steel, and the mass block is connected with the motor shell through a spring piece. The invention further discloses an implementation method of the electromagnet-type horizontal linear vibration motor. According to the invention, an iron core, the coil and a yoke form an electromagnet structure, and the electromagnet structure and the circuit board form a circuit; after an alternating current is connected, an alternating magnetic field generated by the electromagnet interacts with magnetic fields generated by the magnetic steels on the two sides to drive the vibrator assembly to vibrate along the X axis, so the driving force of motor vibration is increased.

Disclosed is a compression conveying mechanism for bagged spring production. The mechanism comprises a machine frame (10), a spring conveying mechanism (20), and a spring compression conveying mechanism (30). The spring compression conveying mechanism (30) comprises two baffles (31) disposed on the machine frame and conveying belts (32) wound on the outsides of the baffles (31), and the distance between the two baffles (31) is gradually decreased from one end to the other end. The spring conveying mechanism (20) conveys a spring to a position between the two baffles (31) and drives the spring to move so that the spring can be moved from the end where the distance between the two baffles (31) is large to the other end where the distance between the two baffles (31) is small. The spring is gradually compressed in the horizontal moving process along with the gradually decreased distance between the two baffles (31), and after the spring is compressed to a certain degree, the spring is disengaged from the spring conveying mechanism (20) and is conveyed by the spring compression conveying mechanism (30). By providing the spring conveying mechanism (20) and the spring compression conveying mechanism (30), compression and conveying of a spring are integrated, a structural form of a traditional bagged spring production machine is abandoned, the degree of automation is high, the structure is simple, the production efficiency is high, and compression and conveying are more stable.

A grout sealer applicator device includes a container having a chamber to receive grout sealer material, a control ferrule attached onto a mouth of the container and having an outlet port for discharging the sealer material. A valve member is attached onto the mouth of the container, and includes a nozzle having a discharge aperture for selectively discharging the sealer material. A discharge wheel is rotatably attached to the control ferrule, and includes an outer peripheral surface facing toward the outlet orifice of the outlet port of the control ferrule, for receiving the grout sealer material from the outlet port, and thus for allowing the grout sealer material to be easily applied onto ground with the discharge wheel.

The purpose of this invention is to prevent a motive power loss and noise in operation, while enhancing sealability of a compression space, by properly setting its angle, while enhancing strength of projections arranged in a lap part. The inner diameter side projection 13 and the outer diameter side projection 14 are respectively arranged on an inner peripheral surface 12A and an outer peripheral surface 12B of the lap part 12 of a revolving scroll 10, and these cross sections are formed in a substantially triangular shape. Thus, the projections 13 and 14 can enhance the strength by preventing stress concentration by concave circular arc surfaces 13B and 14B, and top parts 13A and 14A can easily become familiar by contacting with the lap part 3. An angle [alpha] formed by the adjacent projections 13 and 14 is set in a predetermined range. Thus, the sealability of the compression space 15 is enhanced, and workability of the lap part 12 and the projections 13 and 14 can be enhanced.

The invention discloses an air conditioning compressor of a new-energy automobile. The air conditioning compressor comprises a cylinder body, steam exhaust valves, a sample cover, water jackets, steamsuction valves, a piston ring, a piston, a crankshaft connecting rod, a high-pressure steam discharge port, a water inlet, a water outlet, a low-pressure steam inlet, a spring and a fixing base, wherein the sample cover and the piston are sequentially fixed in the cylinder body from top to bottom, the steam exhaust valves and the steam suction valves are fixed to the sample cover and the piston correspondingly, the water inlet and the water outlet are connected to the water jackets on the two sides, the piston ring is arranged on the piston, the lower side of the piston is connected to the crankshaft connecting rod, the spring is arranged between the upper side of the cylinder body and the sample cover, and the fixing base is fixed to the bottom of the cylinder body. The air conditioningcompressor of the new-energy automobile has the advantages of being small in occupied area and small in mechanical wear, the cylinder cooling performance is excellent, the crankshaft connecting rod isadopted to drive the piston to do reciprocating rectilinear motion, steam can be stably compressed, the refrigeration efficiency can be higher when the air conditioning compressor is applied to the new-energy automobile.

The invention concerns a reversible rotary compressor which can compress refrigerant in either of the forward and reverse directions, without providing a valve mechanism in a closed container. In a reversible rotary compressor including a cylinder, a rolling piston, and a slide vane, two inlet / outlet ports are formed in a space between the outer surface of the rolling piston and the inner surface of the cylinder in a state that the two inlet / outlet ports are disposed on both sides of the slide vane. The two inlet / outlet ports are closed by the rolling piston when the rolling piston is positioned at the top dead center and fully opened when the rolling piston is positioned at the bottom dead center. Two refrigerant pipes, coupled with the inlet / outlet ports, are provided in the side wall of the cylinder. The two refrigerant pipes are closed by the rolling piston when the rolling piston is positioned at the top dead center and fully opened when the rolling piston is positioned at the bottom dead center.

The invention provides a bandage winding and cutting device for medical bandage production, and relates to the technical field of bandage production equipment. The bandage winding and cutting device for medical bandage production comprises a box body, wherein a feed inlet is formed in the left side of the box body; a controller is fixedly installed at the top of the box body, and heating wires arefixedly installed in two device boxes; a light control is fixedly installed on the right side of a rolling table, and a mounting frame is fixedly installed at the bottom of the inner wall of the boxbody; and an air cylinder is movably installed at the top of the inner wall of the box body, and a hydraulic cylinder is fixedly installed at the bottom of the air cylinder. According to the bandage winding and cutting device for the medical bandage production, a bandage is easier to cut and cutting is more uniform by arranging the device boxes, the bandage is firmer and more uniform to cut by arranging a second driving motor, the bandage is easier to cut and more uniform to cut by arranging a second mounting plate, and the tensioned bandage is cut by arranging a cutting machine.

A telescopic steering apparatus includes a steering column having an outer column and an inner column. An inner peripheral surface of the outer column has a supporting portion that supports the inner column. An inner peripheral surface of the outer column further has a shock absorbing portion at a location shifted toward one side in an axial direction from an axial end face of the inner column, a diameter of an inscribed circle of the shock absorbing portion being smaller than an outer diameter of the inner column. The outer column, including the supporting portion and the shock absorbing portion, and a movable bracket are integrally formed by an expansion forming.

The invention relates to an ultrafast diagnosis technology, in particular to a full terahertz driven electron beam manipulation and characterization system and method to solve the problems that an existing streak camera is low in time resolution, complex in structure and poor in stability. The technical scheme adopted by the invention is as follows: the full-terahertz-driven electron beam controland characterization system comprises a femtosecond laser, an ultraviolet laser pulse generation device, a first reflector, a beam splitter, a single-cycle terahertz generation device, a second reflector, a multi-cycle terahertz generation device, a camera, a vacuum chamber and a direct-current acceleration system, wherein the direct-current acceleration system is sequentially arranged in the vacuum chamber along a light path; the device comprises a perforated off-axis parabolic mirror, a terahertz electron beam control system, a terahertz deflection system and a fluorescent screen. The invention also provides a full terahertz driven electron beam manipulation and characterization method.

The invention relates to a reversing valve. The reversing valve comprises a valve body assembly, wherein an axial central hole which leftwards and rightwards extends and a valve element which is assembled into the axial center hole in a leftward and rightward guiding moving manner are arranged in the valve body assembly; a valve element passing port through which the valve element passes is formedin the left end surface, of the axial center hole, on the valve body assembly; a liquid inlet channel and a liquid outlet channel which are connected to the axial central hole and radially extend arearranged in the valve body assembly; the valve element is glidingly assembled in the axial central hole in order to control the liquid inlet channel and the liquid outlet channel to be connected anddisconnected; the liquid outlet channel and the liquid inlet channel are sequentially arranged at an interval from left to right; an axial communication hole which communicates with the liquid outletchannel is formed in the left end surface of the valve body assembly; a piston is glidingly assembled in the axial communication hole in a sealing manner; the reversing valve body further comprises avalve cap which is fixedly arranged on the left end surface of the valve body assembly in a splicing manner, and the valve element is prevented from falling off from the left through the valve cap; ab locking part for blocking the axial communication hole from the left side is arranged on the valve cover; an elastic part is arranged between the blocking part and the piston in a press fitting manner; and / or the blocking part, the piston and the valve body assembly encircle a sealed air chamber.

The invention discloses a system for collecting and utilizing compressed-air type wave energy of a ship swaying lever. An energy converting and collecting device comprises a T-shaped lever, a cylinder and an air storage tank, wherein a vertical rod of the T-shaped lever is arranged in the right middle of a ship body; the upper part of the vertical rod is hinged; a counterweight is arranged at the lower part of the vertical rod; the cylinder is a left cylinder and a right cylinder which are respectively arranged on a left ship body and a right ship body on the two sides of the vertical rod; piston rods of the left cylinder and the right cylinder are respectively connected with a left end and a right end of a cross rod of the T-shaped lever; the air storage tank is a left air storage tank and a right air storage tank; corresponding to the left cylinder and the right cylinder, the left air storage tank and the right air storage tank are respectively arranged on the left ship body and the right ship body; an air inlet valve and an air outlet valve both communicated with atmosphere are arranged on the cylinder; and the air outlet valve is communicated with the corresponding air storage tank through a pipeline. According to the invention, as the converting and collecting device is mounted in the ship body and is not in direct contact with seawater, the direct impact and erosion of the seawater on the device are avoided, the capital investment is reduced, the economic efficiency is greatly increased, the service life is greatly prolonged and convenience for daily maintenance of the device is provided.

A bilateral femoral artery hemostasis device by compression comprises a first pressing plate, a second pressing plate and a bellyband; the bellyband comprises more than one fixing belt and more than one elastic compression hemostasis belt, the second pressing plate is located above the first pressing plate, the second pressing plate is more than one; the first pressing plate comprises a compression plate located at a bottom of the first pressing plate and a top plate located at an upper part of the first pressing plate; a first pressing plate supporting leg is vertically arranged on an upper side surface of the top plate, and a space for the fixing belt to pass through is provided between the first compressing plate supporting legs. The hemostasis device is simple to operate, and only one medical staff member can complete all operations, thereby reducing the work intensity of the medical staff.

The invention discloses a biomass particle forming mechanism with spiral groove press rollers. Press roller assemblies are vertically mounted in a forming cavity, a wedge-shaped compression area is formed by the outer work surfaces of the press rollers and the inner surface of a circular mould, and press roller shaft sets, mounting holes in an upper cover plate and mounting holes in a lower cover plate are matched to form an eccentric structure. The press roller assemblies are connected through clearance adjusting and locating assemblies. Outer cylindrical surfaces extruded by press roller shafts and the circular mould are provided with a plurality of spiral grooves distributed in the axial direction, and the structure that the grooves and convex edges are evenly and alternately distributed in the extrusion acting faces of the press rollers in the circumferential direction is formed. According to the biomass particle forming mechanism, an effective material compression cavity is enlarged, the compression efficiency is improved, and running is stable during work. The uniformity of materials distributed in the axial direction of the press rollers is improved. The service life is prolonged, the mould-roller clearance is adjusted conveniently, adjusting precision is high, the uniformity of the materials distributed in the axial direction of the press rollers is improved, and the compression process is stable.

The invention belongs to the field of fluid drive and control, and particularly relates to a noise reduction method for a plunger pump and a noise reduction device thereof. A filtering cavity is connected with a valve plate, the filtering cavity has a filtering function utilized to filter hydraulic oil in a plunger cavity, and after the plunger cavity is contacted with the filtering cavity, the pressure fluctuation in the plunger cavity can be reduced; oil fluid in the plunger cavity is pressurized through a pressure boost cavity, a differential pressure between the plunger cavity and a plunger pump eduction oil cavity can be reduced so as to reduce the outlet flow fluctuation of a fluid pump. A metal corrugated pipe is connected with the valve plate through damping pinholes to form an RCfilter, the metal corrugated pipe can be dismantled and has different specifications, the damping pinholes can be adjusted, and the filter range can be adjusted by changing parameters of the metal corrugated pipe and damping pinholes. According to the plunger pump working in different conditions, the parameters can be adjusted to achieve a best noise reduction effect.

The invention discloses a two-section type gradient pitch double-screw compressor rotor. The two-section type gradient pitch double-screw compressor rotor comprises a male rotor, a female rotor, male rotor journals and female rotor journals, wherein the male rotor is connected with bearings on the two sides of a compressor shell through the male rotor journals. the female rotor is connected with the bearings on the two sides of the compressor shell through the female rotor journals; and the male rotor journals are connected with a coupler through male rotor shaft heads. The first section close to the air suction side adopts the equal pitch, and a complete contact line is formed on the section, so that the problem that the working volume is reduced due to the gradient pitch is avoided, and the air volume of a compressor is ensured. The pitch of the second section of screw close to the exhaust side is gradually reduced, so that the internal compression with the changed pitch is increased in the compression process, the area of an exhaust orifice is increased, the flow loss during exhaust is reduced, the exhaust noise is reduced, and the efficiency of the compressor is improved.

The invention relates to the technical field of automobile part installment, in particular to an automobile door lock installation structure. The structure comprises a spring bolt, a base, a pressingmechanism, a first installation mechanism, a linkage mechanism, a second installation mechanism and a locking mechanism; the spring bolt comprises an outer clamping column, an inner clamping column and a fixed block; the base comprises a bottom plate, an installation column, a long column and a long cylinder; the pressing mechanism comprises a piston plate and a fixed clamping column; the fixed clamping column is of a hollow structure; the first installation mechanism comprises an installation plate, a first connecting clamping seat and a positioning ring; the linkage mechanism comprises a first rotating column, a second rotating column and a positioning clamping seat; the second installation mechanism comprises a main plate, an installation base plate and a third stud; the lower surface of the main plate is connected with the upper surface of the bottom plate; the locking mechanism comprises a fixed clamping seat and two locking columns; the two locking columns are both installed on the peripheral side face of the outer part of the outer clamping column; and four sets of sliding plates are symmetrically arranged on the peripheral side face of the outer part of the inner clamping column, and a formed groove position just has a limiting effect on a push block.

The invention relates to a waste treatment device, and belongs to the technical field of waste collection. The waste treatment device comprises a first cavity, a second cavity, an air extraction pipeand a compression mechanism. The second cavity is provided with a feeding opening and a discharging opening, and the first cavity communicates with the second cavity. The air extraction pipe is connected with the first cavity and used for extracting out dust. The compression mechanism is arranged on the discharging opening and used for compressing and discharging waste. By means of the waste treatment device, dust removal can be carried out on waste, then flow direction sorting is carried out on waste, then compression treatment is carried out, operation is safe and reliable, waste can be continuously and stably compressed and discharged, and it is ensured that the cutting process is not influenced.

The invention discloses river channel garbage treatment equipment based on the Internet of Things technology. The river channel garbage treatment equipment comprises a river channel garbage treatment equipment body, a sealing mechanism is arranged in the river channel garbage treatment equipment body, the sealing mechanism comprises a first air pump, a sealing connecting pipe is connected to the first air pump, and a sealing bin is connected to the end, away from the first air pump, of the sealing connecting pipe; a sealing door is connected into the sealing bin, an air inlet pipe is connected to the first air pump, and an air inlet outer pipe is connected to the end, away from the first air pump, of the air inlet pipe; an air inlet filter screen is connected into the air inlet outer pipe; and a garbage filter screen is connected into the river channel garbage treatment equipment body. According to the river channel garbage treatment equipment based on the Internet of Things technology, by arranging corresponding mechanisms on the river channel garbage treatment equipment, the garbage capacity of the river channel garbage treatment equipment is greatly improved, meanwhile, the necessity of secondary cleaning on the cleaned water surface is greatly reduced, the frequency of cleaning the river channel garbage treatment equipment by cleaning personnel is reduced, the probability of virus infection is reduced, and the cleaning efficiency of river channel garbage is improved.

The invention discloses a gas compression device for a high-stability pressing machine. The gas compression device comprises a base, the front surface of the base is fixedly provided with a controller, and the top of the base is provided with a pressure box and a bottom plate in sequence from left to right; the pressing box is internally and fixedly provided with a partition plate, the top of the partition plate is fixedly provided with a branch pressure box, the bottom of the inner wall of the pressure box is provided with a shock pad and a pump body in sequence from left to right, and the top of the shock pad is fixedly provided with a motor. According to the gas compression device for the high-stability pressing machine, through arrangement of the branch pressure box, a distribution box, an electromagnetic valve and a manually-operated valve, high-pressure air can enter a pressurizer uniformly, the situation that the interior of the pressurizer is nonuniform in stress is avoided, leakage of the high-pressure air caused by nonuniform stress of the pressurizer is prevented, stability of the pressurizer is effectively improved, the service life of the pressurizer is prolonged, and invested funds of a compressor is reduced.