91results about How to "Avoid shock loads" patented technology

PCT No. PCT / EP96 / 04228 Sec. 371 Date Feb. 20, 1998 Sec. 102(e) Date Feb. 20, 1998 PCT Filed Sep. 27, 1996 PCT Pub. No. WO97 / 14635 PCT Pub. Date Apr. 24, 1997The invention concerns a conveyor belt scraper used to scrape debris from the surface of a conveyor belt (10). The scraper incorporates a segmented scraper blade which includes individual blade segments (22) arranged side by side with one another such that in use each blade segment scrapes a portion of the width of the belt surface. For blade segment there is a blade segment support (28) on which the associated blade segment (22) is supported. Each blade segment support (28) includes pivotally interconnected links (30, 32, 34, 36) forming a closed parallelogram linkage. A support structure (42, 82) is provided to support the parallelogram linkages in side by side relationship adjacent the belt surface. Gas-inflatable biasing means (44, 58) act on the parallelogram linkages such that inflation thereof causes the linkages to deform in a manner to displace the blade segments (22) in a direction lengthwise of the belt (10) and towards the belt surface. During such displacement, each blade segment (22) moves parallel to itself and maintains a constant inclination to the vertical.

The invention relates to a high-speed turn-milling combined machining power electric main shaft device and a manufacturing method thereof. The main shaft device is arranged on a high-speed five-shaft turn-milling combined machining machine tool, and assorted electric, hydraulic and control parts are correspondingly combined with a system on the machine tool. The high-speed turn-milling combined machining power electric main shaft device is characterized in that the inside of a main shaft box is concentrically provided with a water jacket, an in-built motor and a main shaft from the outside to the inside; the inner bore of the main shaft is provided with a broach mechanism; the front end of the broach mechanism is provided with a broach case, and the rear end thereof is connected with a connecting sleeve and a broach detaching mechanism; a front bearing and a rear bearing which are arranged on the outer walls of both ends of the main shaft respectively form a bearing variable pre-tightening structure; a three-fluted disc mechanism is arranged on the periphery of the broach case; a broach oil cylinder is formed by a sleeve; an unloading oil cylinder, the broach detaching oil cylinder and a broach forging oil cylinder which are arranged at the rear end of the main shaft are arranged on the main shaft box through a rear end cover and a big flange; and an oil inlet and an oil outlet are respectively connected with the hydraulic system of the machine tool. The invention can realize the combined machining, such as high-rigidity lathe machining, high-rotating speed milling and the like.

The invention provides a repeatable and flexible capture structure based on dielectric elastomer and shape memory polymer and a method for capturing space debris. According to the repeatable and flexible capture structure based on the dielectric elastomer and the shape memory polymer and the method for capturing the space debris, the problems that traditional aerospace machines and motor driving capture structures are complex and large in weight are solved. The repeatable and flexible capture structure based on the dielectric elastomer and the shape memory polymer is mainly composed of the unfolding structure of a shape memory polymer composite material sheet layer, namely a three-wing type unfolding beam, and the dielectric elastomer. The structure constituted by the shape memory polymer composite material sheet layer is used for driving and controlling the capture structure to the designated spot, and the structure constituted by the shape memory polymer and the dielectric elastomer is used for capturing the space debris. The repeatable and flexible capture structure based on the dielectric elastomer and the shape memory polymer is simple in structure and high in reliability, and is applied to repeatable and flexible capture structures.

The invention discloses a decoupling control method for variable pitch control and torque control of a large wind turbine unit. The large wind turbine unit consists of a variable pitch control system and a torque control system. During the operation of a fan, a pitch PID (Proportion Integration Differentiation) controller and a torque controller operate simultaneously, wherein variable pitch control is implemented by the pitch PID controller, and torque control is implemented by the torque controller. The variable pitch control system is formed by a pitch deviation calculating module, a pitch PID controller module, a pitch amplitude limiting module and the like by means of combination, and the torque control system is formed by a torque deviation calculating module, a torque PID controller module, a torque amplitude limiting module and the like by means of combination. The decoupling control algorithm provided by the invention realizes decoupling algorithms of the pitch controller and the torque controller by amending controller software without adding extra hardware, so that the cost of the fan is reduced.

The invention relates to a planetary transmission structure of a wind power gear box, which comprises a sun gear, a planetary bracket, a mandrel, planetary gear bearings, planetary bracket bearings and a planetary gear. The planetary bracket is mounted on a box through the planetary bracket bearings, the planetary gear is mounted on the mandrel through the planetary gear bearings, and the planetary gear bearings are a pair of tapered roller bearings and are mounted back to back. The planetary transmission structure is capable of bearing bending moment generated by axial force of the planetary gear more effectively, load impact from paddles is prevented, running reliability of the gear box is improved, and the working requirement of the wind power gear box is met.

A process for preparing fibers from used and rejected wood includes such steps as transverse cutting to become strip units, collecting impurities, longitudinal cutting to become wood sheets, removing impurities, mixing with the wood sheets made of fresh wood and hot grinding to obtain fibers.

The invention discloses a video-ranging offshore platform crane heave compensation control system and method. The video-ranging offshore platform crane heave compensation control system comprises a control computer, an industrial camera and a direct-pump-controlled electrical-hydraulic heave compensation device, wherein the industrial camera as well as a servo motor driver, a rotating speed sensor, three pressure sensors and a built-in displacement sensor in the direct-pump-controlled electrical-hydraulic heave compensation device are respectively electrically connected with the control computer to carry out information and energy exchange; and the industrial camera and the direct-pump-controlled electrical-hydraulic heave compensation device are respectively arranged on an offshore platform crane base. Three-dimensional location information of a ship is detected through a video ranging method and is transmitted to the control computer to control the direct-pump-controlled electrical-hydraulic heave compensation device, and furthermore the intelligent heave motion compensation of an offshore platform crane is carried out; and the crane is not influenced by the heave motion of a ship body, a load is lifted to leave away from and be stably descended to a deck of a supply ship, and furthermore the intelligent heavy motion compensation realized through lifting and descending of the crane is carried out.

A palletizing apparatus is configured to assemble groups of articles, and successively transfer the groups onto an associated pallet. The apparatus includes lugging and transfer sections where the groups of articles are assembled, and thereafter transferred to a vertically adjustable shuttle conveyor apparatus. The shuttle conveyor apparatus includes a horizontally reciprocable shuttle conveyor, which can move from a first, retracted position, to a second, extended position. During retraction of the shuttle conveyor from its second position to its first position, the conveyor is operated so that each group of articles is transferred therefrom onto the associated pallet. Features of the present apparatus facilitate its efficient and consistent operation, while avoiding excessive wear of the apparatus.

The invention relates to the field of machine manufacturing, in particular to an automatic disengaging type fastening piece locking mechanism used for assembling bolts. The automatic disengaging type fastening piece locking mechanism comprises a servo motor, a reducer, a guide mechanism and a sleeve. The reducer is fixedly connected to the servo motor. The guide mechanism is fixedly connected to the reducer. The sleeve is fixedly connected to a central shaft of the guide mechanism. In work, the servo motor is in a torque mode. The automatic disengaging type fastening piece locking mechanism can output precise torque, and a bolt and a nut can be matched more firmly and reliably.

The invention discloses a multi-channel independent current limiting output single-chip intelligent power supply with a load state detection function. The power supply solves the problem that an existing movable power supply is large in size, high in cost and poor in safety. The intelligent power supply comprises a USB input interface, an MOS tube T1, an MOS tube T2, an MOS tube T3 and a control chip IC, wherein the MOS tube T1, the MOS tube T2, the MOS tube T3 and the control chip IC are connected with the USB input interface after being sequentially connected, the control chip IC comprises a central controller MCU and at least one load state detection and current limiting output unit connected with the central controller MCU, one end of the load state detection and current limiting output unit is connected between the MOS tube T1 and the MOS tube T2, and the other end of the load state detection and current limiting output unit is connected with an external load. The load state detection and current limiting output unit is arranged in the control chip IC, so that states, such as insertion, plugging, short-circuit, overcurrent, of each load can be detected independently, complete impendence of multi-channel output is achieved, cost is low, safety is high, expansibility is high, and the power supply is very suitable for being popularized and used in a large scale.

The invention relates to the field of diamond cutting tools, in particular to a manufacturing method of a diamond saw chain. The diamond saw chain mounted on a chain saw cutter of reinforced concrete is used for cutting building materials, such as the reinforced concrete and bricks. The diamond saw chain is made by riveting a plurality of chain link units. Each chain link unit comprises a tooth plate I, a diamond bit, a tooth plate II, a connecting plate and a pin, the diamond bit is provided with a steel core, and both the tooth plate I and the tooth plate II are provided with protective teeth. A bit die is made of graphite and used for manufacturing the diamond bits. The manufacturing method is suitable for manufacturing the diamond saw chain; welding cost is low, welding strength is high, and cutting performance can be improved; the tooth plate I and the tooth plate II with the protective teeth protect the diamond bits from high impact load during operating, and the service lives of the diamond bits are prolonged.

The invention belongs to the technical field of leachate filtration and application, and specifically discloses a filter system applied to pickling sludge leachate treatment. The filter system is formed by a UF (Ultra Filtration) membrane filter assembly, an RO (Reverse Osmosis) membrane filter assembly and an NF (Nano Filtration) membrane filter assembly. The filter system disclosed by the invention has the advantages that 1, water produced by a biochemical system can be subjected to thorough sludge-water separation by applying an external tubular UF membrane technology, which is organically combined with the biochemical system to form an external MBR (Membrane) technology, relation separation of sludge retention time and hydraulic retention time is realized, and the active sludge concentration of the biochemical system is increased, so that the processing ability and the anti-shock loading capacity of the biochemical system are increased; 2, dealt with sewage of leachate which is high in CODcr (Chemical Oxygen Demand) concentration, a traditional concept that an anaerobic technology must be adopted is abandoned, the relation and the handling difficulties of index pollutants such as CODcr, BOD (Biochemical Oxygen Demand) 5, NH3-N, TN (Total Nitrogen) and SS (Suspended Solids) are accurately analyzed, thorough treatment is carried out by adopting an anoxic-aerobic technology, raw water is diluted by utilizing reflux of a large-proportion nitrifying solution, and a shock load effect of high-concentration sewage on the biochemical system can be avoided.

The invention discloses an integrated two-phase anaerobic desulfurization reactor and a wastewater treatment method thereof and belongs to the field of wastewater treatment devices.The integrated two-phase anaerobic desulfurization reactor comprises a desulfurization reaction tank and a methane-producing reaction tank which are of an integrated structure, wastewater enters the desulfurization reaction tank and the methane-producing reaction tank and is processed sequentially, and the desulfurization reaction tank and the methane-producing reaction tank are separated by a separation wall and communicated by an effluent weir.According to the wastewater treatment method of the integrated two-phase anaerobic desulfurization reactor, the integrated two-phase anaerobic desulfurization reactor can be applied to treatment of high-concentration sulfate wastewater and high-concentration organic wastewater by single reaction step of desulfurization action and methane production reaction and has the advantages that the desulphurization efficiency is high, the resistance to impact load is high, the mixing state is good, and the occupied area is small.

The invention discloses a biological method-based compound compost odor filtering device and method. The biological method-based compound compost odor filtering device is characterized in that odor generated in a vessel composting process is introduced into an odor treatment device with a concrete structure through a water-cooled temperature adjustment device, a draught fan and a one-way valve; a concrete trench allowing gas to be uniformly distributed is formed in the bottom of the device; a concrete cover plate with gas holes is arranged at the upper part of the device; tracks are laid on the cover plate; a drawer-type housing is arranged on the tracks and made of engineering plastic, and gas holes are uniformly distributed in the lower part of the drawer-type housing; the housing is filled with double ball bodies made of engineering plastic uniformly; white-rot fungi are inoculated to the upper half part of an inner ball of the double ball bodies to form a first-stage filtering layer; the odor generated in the composting process enters a second-stage active soil filtering layer after being buffered, adsorbed and partially degraded by the first-stage filtering layer, and finally lawns are planted on the surface of the soil filtering layer. Through the adoption of the two-stage compound compost odor processing device, the problems that pure soil filtering layer particles are likely to block a filtering material, the filtering material on the lower layer is likely to be dry, air flow fluctuates remarkably, and the energy consumption is high are solved.

The present invention discloses a semi rigid joint for flexibly joining various links / structures. The said semi rigid joint comprises plurality of joining elements wherein each said joining element supporting at one end at least one joining component and at its other end having a magnetic connector such that the two adjacent placed joining elements facing said respective magnetic connectors under magnetic attraction of respective magnetic connectors provide a magnetic joint to connect together the components carried at its other ends. A flexible spring means is also proved in cooperation with the magnetic joint to allow bending at said magnetic joint under any external impact / force exceeding the magnetic attraction of the magnets and on release of said external impact / force rejoining the joints under restored magnetic attraction.

The invention relates to a rotary sealing and cutting device capable of achieving high-speed sealing and cutting. The rotary sealing and cutting device comprises a rack, an upper sealing and cutting mechanism and a lower sealing and cutting mechanism, wherein the sealing and cutting mechanisms carry sealing and cutting actions, each sealing and cutting mechanism comprises a rotating shaft, a rotating seat and a sealing and cutting assembly, each rotating seat is connected to the corresponding rotating shaft, each rotating shaft is in transmission connection with a power source driving the corresponding rotating shaft to rotate, each sealing and cutting assembly comprises a sealing knife, a knife holder, a sliding block, a guide wheel seat and guide wheels, and an upper guide plate and a lower guide plate are arranged on the rack. According to the rotary sealing and cutting device, the upper sealing and cutting mechanism and the lower sealing and cutting mechanism are adopted, impact loads generated by existing horizontal reciprocating motion are avoided, a D-shaped annular groove is combined, the sealing knife is made to move along the D-shaped track, and therefore the sealing timeis prolonged, a packaging film can still obtain the optimal heat sealing effect at a high speed, and the sealing air tightness requirement is met.

A percussion tool includes an actuating piston and a pump. The pump includes: a cam ring, a valve plate, a piston housing, and a piston. The cam ring includes an aperture having a camming surface. The valve plate faces the cam ring and includes a fluid port extending therethrough. The piston housing includes a fluid passage extending therethrough and is disposed within the aperture of the cam ring and rotates within the cam ring. A piston reciprocates within the piston housing. The fluid passage in the piston housing is configured to alternate between being in fluid communication with the fluid port in the valve plate and being isolated from the fluid port as the piston housing is rotated relative to the cam ring and valve plate. The flow port in the valve plate is larger in flow area than the flow area of the fluid passage in the piston housing.

The invention relates to a foil generating machine lead anode fly knife device comprising a power source, a drive assembly and a cutter bar assembly, wherein the drive assembly comprises two main driving wheels, a feeding chain wheel, a rotary chain wheel, a revolving drum, a rolling screw rod and a rolling nut. The invention solves the technical problem that the existing foil generating machine lead anode fly knife device has large volume, high processing cost and energy waste. The invention has the advantages of energy saving, small structure, convenient installation and long service life.

The invention relates to an oil well acidification flowback liquid treating technology and device for an offshore oil field. The oil well acidification flowback liquid treating technology comprises the steps that acidification flowback liquid discharged out of a well opening of a Christmas tree is decompressed and heated up; a demulsifying agent and a reverse demulsifying agent are added, and the acidification flowback liquid is fed into an efficient separator for separation of oil, gas, water and mud; separated oily sewage is added with a water treatment agent and then fed into an oil and water separator, water discharged out of the oil and water separator is added with a PH value modifier, enters a pressure reactor to react and then enters a high-speed two-phase separating machine for separation of mud and water, separated water is subjected to fine filtering, oil discharged out of the efficient separator is added with a demulsifying agent and a desulphurizing reagent and then enters a free water removing device for removal of water, oil discharged out of an oil-phase outlet passes through an oil pump and a high-level intense demulsifying device and enters a high-speed three-phase separating machine for removal of water and mud, and the discharged oil enters an offshore oil production platform closed discharging system through excess pressure of the high-speed three-phase separating machine. According to the oil well acidification flowback liquid treating technology and device, the treatment efficiency is high, occupied space is small, transport and hoisting are convenient between offshore platforms, and with the combination of an efficient chemical agent, the acidification flowback liquid is quickly treated to reach the expected index.

The invention relates to a multi-mode electric vehicle charging system and a charging method thereof. The system comprises a power network interface, an energy storage device, a charging interface, anenergy exchange bus and an energy flow control device. The energy flow control device is connected with a charging service platform, a power grid dispatching system, an electric power trading marketand a vehicle owner through a communication network and exchanges information. The method comprises the following steps: the energy flow control device predicts the charging demand according to the charging demand related information and the regional charging demand statistical information, According to the electric power supply information, the electric power supply quantity is forecasted, and then the optimized energy storage plan is made according to the forecast information of charging demand quantity, electric power supply quantity, energy storage related information and vehicle owner's charging demand information, which gives consideration to both economy and guarantee supply. The invention can provide multi-mode charging service, thus satisfying the diverse charging requirements ofvehicle owners and avoiding large load impact to the power network.

The invention creatively provides a construction method of a steel-concrete combined section of a long-span cable-stayed bridge. The construction method includes the steps that firstly, longitudinal prestressed tendons of concrete beams are installed, and fine-adjusted concrete beam sections are put in place; then a plurality of pouring holes are formed in steel beams, fine-adjusted steel box girders are put in place, and the steel beams and the concrete beams are in butt joint and locked temporarily; then steel geocell concrete of a bottom plate, a web, steel geocell concrete of an inclined web and steel geocell concrete of an outer web are poured; and then steel geocell concrete of a roof is poured. According to the construction method of the steel-concrete combined section of the long-span cable-stayed bridge, concrete is poured directly through a discharging hopper, the impact load on a support system during concrete conveying through a pump is avoided, shaking is relieved, the structural stress condition of the junction of the steel-concrete combined section is improved, strict vibration is not required during pouring, construction is convenient, the effect after curing is good, the concrete pouring quality is excellent, the safety risk in the construction process is lowered, and the construction progress is accelerated.

A centrifugal clutch for motorcycles employs a cam-actuating mechanism having multiple rows of centrifugal force-responsive cam members of a selected density and size to force a series of clutch plates into clutching engagement over the shortest possible distance and least possible speed of rotation while assuring ease of positive engagement of the clutch members in response slight increases in speed of rotation. The cam-actuating mechanism can be employed with a manual override mechanism to manually control locking and release of the clutch members as well as utilizing a torque limiter to absorb shock loads without unduly increasing the size of the clutch so that it will readily fit into the space occupied by existing or standard clutch mechanisms.

The invention relates to the field of mechanical industrial equipment and particularly relates to an electric screw press which comprises a machine body, motors with an even number, a screw rod, a slide block and an inertia wheel with an outer ring as a large gear, wherein the motors are installed on the machine body, an extension shaft of each motor is provided with a small gear, the screw rod is connected with the inertia wheel to form a whole body and carries out linear motion by forming a spiral auxiliary drive slide block with a nut, each small gear is meshed with each large gear through a transition gear shaft, each transition gear shaft is installed on a swinging arm through a lower bearing and an upper bearing, each swinging arm is installed on a support arm through a pin shaft, and a pair of swinging arms which are symmetric around the rotation center of each large gear are connected together by a pull rod through a pull rod pin shaft. According to the invention, a novel electric screw press is manufactured and a friction screw press in the traditional structure can be reformed into the electric screw press.

The invention discloses a device for testing axial bearing capacity of a conical dynamic-pressure spiral groove bearing. The device for testing the axial bearing capacity of the conical dynamic-pressure spiral groove bearing consists of a mechanical part and an electrical control part; a high-frequency motor (1) is mounted at the upper part of a test device frame (12); a transmission shaft (2) is mounted at the lower part of the high-frequency motor; a tested bearing (3) is mounted below the transmission shaft; a bearing base (5) is mounted inside a bearing race (6); the bearing race is positioned inside a loading sleeve (11) at the upper part of a gasket (4); the loading sleeve is mounted inside a split positioning ring (9); a ball (10) is mounted inside a rectilinear runner of the split positioning ring; the split positioning ring is mounted at the bottom of the test device frame (12); a loading lever (8) is mounted at the bottom of the test device frame (12); a weight is arranged at the outer end of the loading lever; the inner end of the loading lever is arranged below the loading sleeve; the inner end of a strain beam (13) is embedded into a U-shaped groove of the loading sleeve; the outer end of the strain beam is connected with a dynamic and static strain testing system of the electrical control part.

The invention provides a wind-solar-energy-storage integrated air conditioning system based on a common direct-current bus and a control method thereof, and belongs to the field of air conditioning systems. The system comprises a direct-current bus, an alternating-current power grid which is electrically connected to the direct-current bus and used for providing electric energy for the direct-current bus, a solar photovoltaic cell panel, a wind driven generator, and an air conditioning system which is electrically connected to the direct-current bus. The system further comprises a DC control selector which is used for collecting the electric information of the direct-current bus, the alternating-current power grid, the solar photovoltaic cell panel and the wind driven generator and configuring the alternating-current power grid, the solar photovoltaic cell panel and the wind driven generator according to the electric information so as to enable the voltage provided by the direct-current bus to be within the voltage range required by the air conditioning system. Light energy and wind energy are comprehensively utilized, dependence of the air conditioning system on an alternating-current power grid is reduced, and system operation stability is improved.