58results about How to "Improve work stability" patented technology

The invention discloses a tuning quality damper vibration reduction control device used in a wind turbine, which relates to tuning quality damper vibration reduction control technology. The invention is arranged inside a tower arranged at an upper end of a wind generator and comprises a platform, rotation adjusting devices, a power device, a quality block assembly and a damper arranged on the platform; the platform is fixed on the internal wall of the tower; the key design points of the invention are characterized in that: the power of the power device drives the quality block assembly to rotate through the rotation adjusting devices so that the components on the platform can rotate synchronously along with the yaw of the wind turbine. Opposite direction adjustment can be realized forwardly along with wind directions by the invention, thus controlling vibration amplitude to the utmost extent. Furthermore, based on MTMD vibration reduction mechanism, the invention also provides an MTMD technical proposal with a plurality of single TMDs arranged from top to bottom in sequence; the power device coaxially drives varied rotation adjusting devices, thus guaranteeing the synchronous rotation speed of each turntable and controlling the vibration of the tower within a frequency band scope caused by the rotation of wind wheels.

The invention relates to an oblique plunger type pure water hydraulic swash plate pump, which adopts a sphere flow distribution structure of a cone-shaped cylinder. A plunger and a transmission shaft form an included angle, and relative to the transmission main shaft, the plunger is arranged in a shape of cone; and centripetal force generated during operation facilitates return stroke of the plunger. The main shaft is connected with a conical cylinder via a spline, and the plunger is matched with skid shoes via a ball head. A spherical hinge and the cone-shaped cylinder are pressed by a disk spring, return stroke force during the operation of the plunger is provided and sealing of the skid shoe pair and the flow distribution pair is achieved. A flow distribution disc adopts a sphere flow distribution structure, facilitates balancing of subversion moment generated by the cone-shaped cylinder during operation, and improves the self-alignment performance of the cone-shaped cylinder and the flow distribution plate; the cone-shaped cylinder and the sphere flow distribution disc structure enable the flow distribution window pitch diameter of the flow distribution disc to be reduced, water absorption flow rate is reduced, and self-sucking performance of a pump is enhanced. The pump takes filtered fresh water or seawater as the working medium, solves the problems that the self-sucking performance of a pure water hydraulic plunger pump is poor and the return stroke is difficult, and has remarkable technical advantages.

Improved breakwater construction blocks and interlocking shear key blocks for use in constructing diverse systems and works, in broad fields of use including, but not limited to, coastal engineering: river, stream and torrent control, bulkhead designed projects, scour control, check dams, permeable and impermeable groins-both river and ocean structures and other hydraulic works including marinas.

The invention relates to a semiaxis type pure-water hydraulic axial plunger pump supported by bearings in a cylinder, which adopts a semiaxis type structure that a sliding bearing supports a cylinder body. The semiaxis type pure-water hydraulic axial plunger pump is characterized in that a front bearing supports an input shaft, and a rear bearing is the sliding bearing in the cylinder and is used for supporting the cylinder body. Due to reasonable bearing distribution, the stressing of the bearings is reduced, and the overturning moments of flow distribution discs are balanced. A distributed type return spring penetrates through the cylinder body and acts on a spherical hinge and a floating lining plate respectively, so that not only is the sealing of a sliding shoe pair and a flow distribution pair guaranteed, but also the abrasion of sliding shoes and the flow distribution discs can be automatically compensated. The flow distribution discs are fixedly arranged on a rear end cover and are sealed by adopting sealing rings so as to avoid leakage of the back surfaces of the flow distribution discs. A plunger pair adopts an automatic gap-compensating type sealing structure so as to reduce leakage of the plunger pair and improve the anti-pollution capability of the pump. The semiaxis type pure-water hydraulic axial plunger pump adopts filtered fresh water or seawater as a working medium, adopts all-water lubrication for all friction pairs, is high in power density, can be used for industrial cleaning, seawater freshening and underwater operation tools and the like and is wide in application prospect.

The invention discloses a gravity grading stone removing machine, and relates to the field of grain processing machinery. The gravity grading stone removing machine comprises a frame, wherein a sealed vibrating body is arranged above the frame, an upper sieve and a lower sieve are arranged in the vibrating body, a light material outlet is arranged below the vibrating body at the rear end of the upper sieve, a heavy material outlet is arranged below the vibrating body at the rear end of the lower sieve, a stone outlet is arranged below the front end of the vibrating body, two sides of the rear end of the vibrating body are respectively provided with a vibrating motor, at least one air chamber is connected above the vibrating body, a rubber tube and a feed hopper are arranged above each air chamber, an air suction tube is connected to the upper end of each rubber tube, and the air suction tubes are connected with the frame through the same supporting frame; and each feed hopper is arranged at one side of the corresponding rubber tube, each feed hopper is connected with the corresponding air chamber, the upper end of each feed hopper is connected with a soft sleeve, and the upper end of each soft sleeve is connected with a feeding tube. The gravity grading stone removing machine has the advantages of novel structure, good performance, stable operation, high quality, high yield and good stone removing effect.

The invention relates to a special machine tool and a method for boring a double-support hole of a spinning spindle elastic pipe combining member. The special machine tool comprises a main shaft system, a left knife rest distributing device, a right knife rest distributing device, a machine tool body, an operating panel and an electric control cabinet, wherein the main shaft system is installed in the very center of the machine tool body; a left vertical and horizontal sliding table device and a right vertical and horizontal sliding table device at the left side and the right side of the main shaft system are installed on the machine tool body; the left knife rest distributing device is installed on the left vertical and horizontal sliding table device, and the right knife rest distributing device is installed on the right vertical and horizontal sliding table device; the electric control cabinet is used for controlling the running of the special machine tool; and the operating panel is connected with the electric control cabinet. By using the excircle with larger diameter of the elastic pipe combining member as a positioning reference, after the special machine tool is self-adaptively positioned and clamped by a special camp, the precise boring of a double-support hole is simultaneously finished, the processing precision is improved, and the precision requirement for concentricity of the double-support hole of the high-speed spinning spindle elastic pipe combining member is ensured, thereby achieving the aim of improving the processing quality of yarn.

The present invention relates to a new type rotary-tilling stubble-breaking universal machine, belonging to a agricultural tillage equipment. It includes machine frame composed of suspension carrier, rectangular frame and side plates, and said invented improvement lies in that a speed change box which has shifting-fork draw-bar and duplicate gear and can give out two rotating speed outputs is added. It also includes an universal knife roller formed from knife disk welded on the knife roller shaft, on the knife disk a rotary-tilling stubble-breaking universal knife is mounted, knife handle portion has two mounting holes, the knife can be fixed on the knife disk by means of two bolts. It can utilize one machine to implement two works of rotary tillage and breaking stubble.

The invention discloses a lifting device of a dynamic compaction machine. The lifting device comprises a winding drum, a hydraulic control clutch used for being attached to the winding drum so as to drive the winding drum to rotate and brakes used for braking motion of the winding drum. The brakes comprise the hydraulic control main winding brake and further comprise the hydraulic control snub brake. According to the lifting device, the stability of the dynamic compaction machine can be improved. The invention further discloses the dynamic compaction machine which comprises the lifting device.

The invention provides a bender hydraulic system which has simple structure, reliable control and back pressure being capable of being adjusted at will, aiming at solving the problems that an unloading circuit of the traditional bender hydraulic control system is more complex, back pressure control stability is low, a valve group is troublesome to mount, a product is heavy and power density ratio is low. The bender hydraulic system provided by the invention comprises an oil pump, an oil tank, a three-position three-way reversing valve, wherein a charging valve is connected between the oil tank and the upper cavity of a cylinder; the oil outlet of the oil pump is connected with the oil tank by virtue of a two-way cartridge valve; the port P of the three-position four-way reversing valve 30 is connected with the oil outlet of the oil pump, the port B of the three-position four-way reversing valve 30 is connected with the lower cavity of the cylinder by virtue of a first electromagnetic directional valve 40; the port B is also connected with the control port of the charging valve; the port A of the three-position four-way reversing valve 30 is connected with the upper cavity of the cylinder by virtue of a throttling check valve 20; and the port B is also connected with the lower cavity of the cylinder by virtue of a second electromagnetic directional valve 50 and a throttling valve 60.

The invention provides an adjustable limitless sudden brake device for press machine. It features in an electric free brake device that comprises an installation base of the central shaft on the press machine wall, electromagnetic clutch towards the installation base, drive gear between the installation base and the armature, and the approach switch controlling the electromagnetic clutch installed on the top of the crankshaft of the press machine. It realizes one time adjustable feature, with short response time, stability, less noise.

A coal cutter double blade dual-cylinder drum comprises an inner barrel, a connecting disc, an end plate, an end sic, cutting blades, a tooth base, an injector base, an outer barrel, a rib plate, a load blade, and a sealing plate, wherein the connecting disc, end plate and the inner barrel are welded together, the cutting blades are welded on the inner barrel, the tooth base and the injector base are welded on the end disc and the cutting blades, the load blade is welded on the outer barrel, the rib plate is welded between the cutting blades and the load blade, the sealing plate welds the edges of cutting blades and the load blade. The invention can improve stable balance of drum, improve load efficiency and reduce energy consumption or the like.

Iron / carbon (Fe / C) nanocomposite catalysts are prepared for Fischer-Tropsch synthesis reaction. A preparation method includes steps of mixing iron hydrate salts and a mesoporous carbon support to form a mixture, infiltrating the iron hydrate salts into the carbon support through melt infiltration of the mixture near a melting point of the iron hydrate salts, forming iron-carbide particles infiltrated into the carbon support through calcination of the iron hydrate salts infiltrated into the carbon support under a first atmosphere, and vacuum-drying the iron-carbide particles after passivation using ethanol. Using such catalysts, liquid hydrocarbons are produced.

The invention discloses a special high-precision arc channel composite milling machine for a bell housing, and belongs to the technical field of milling machines, a clamping device comprises a spring chuck, a hydraulic indexing tool turret, an extension seat, a tool turret seat, a transmission rod, an arc rotating table and a driving mechanism, the arc rotating table is fixedly installed on a workbench, and the transmission rod is installed in the arc rotating table in a transmission mode; the tool turret base is fixedly installed at the upper end of the transmission rod, the extension base is integrally formed on one side of the tool turret base, the hydraulic indexing tool turret is fixedly installed on the extension base, the spring chuck is installed on the hydraulic indexing tool turret, and the driving mechanism is fixedly installed at the lower end of the arc rotating table. The transmission rod is driven by the driving mechanism to do reciprocating rotation motion so as to drive the spring chuck to do reciprocating arc track motion on the horizontal plane, and the effects of being simple and ingenious in structure, long in service life, stable in cutter cutting, high in machining precision, low in energy consumption, low in cost, capable of machining double arc channels at a time and high in machining efficiency are achieved.

The invention relates to a buffer and vibration absorption device of an engine balance shaft of a bestriding motorcycle. The buffer and vibration absorption device comprises a balance shaft assembly, a balance shaft driven gear and a balance shaft driven gear inner ring, and buffer mechanisms are arranged on the balance shaft driven gear and the balance shaft driven gear inner ring. The elastic contact connection of the balance shaft driven gear and the balance shaft driven gear inner ring is achieved through the buffer mechanisms, therefore, torsional pulse loads between the balance shaft driven gear and the balance shaft driven gear inner ring are reduced, impact force between the balance shaft driven gear and the balance shaft driven gear inner ring is effectively reduced, and meanwhile noise generated by the impact force is reduced. In addition, axial loads between the balance shaft driven gear and the balance shaft assembly is reduced to a certain degree through a balance shaft wave washer assembled between the balance shaft driven gear and the balance shaft assembly, noise generated by the axial loads is reduced, therefore, work impacts and abnormal sounds between engine balance shaft mechanisms are reduced, and the work stability of the balance shaft is improved.

The invention discloses a small gangway bridge hydraulic system. The small gangway bridge hydraulic system comprises a main oil supplying system, a constant thrust energy accumulator system, a transverse rocking compensating system, a pitching compensating system, a telescopic system and a rotating system. Due to the system, better following and compensating can be achieved through the hydraulic system, and overlap joint of a gangway bridge is reliable, safe and efficient.

The invention discloses a chain-delivered winding shaft for a winder. The chain-delivered winding shaft comprises a winding shaft body, a crank arm, a friction roller, a cylinder, a chain wheel, a chain and a supporting plate, wherein the winding shaft body is arranged on the crank arm; the crank arm is connected with the cylinder; the friction roller is connected with the crank arm; the chain wheel is connected with the chain; and the supporting plate is fixed on the chain. According to the chain-delivered winding shaft, the chain is adopted for up-and-down linear movement delivery to enable the winding shaft body to fall to an initial wind-up position, a motor is adopted to drive the chain to move, the supporting plate for supporting the winding shaft body is fixed on the chain through bolts and supports the winding shaft body to move up and down along with the chain, and the movement speed depends on the speed ratio of a motor reducer. The designed winding shaft is low in movement speed, and accordingly, cannot generate impact, so that the problem that during rotary delivery of a traditional winding shaft, the winding shaft falls down in an accelerated manner due to the weight action, and consequently impacts equipment is solved, noise of the equipment is lowered, steady falling of the winding shaft is realized, and the working stability of the winder is improved.

The invention relates to the field of motors, and particularly relates to a stator punching sheet and a concentrated winding stator used in a heavy-load permanent magnet synchronous traction motor. The stator punching sheet and the stator comprise a tooth punching sheet and a yoke punching sheet integrated with the tooth punching sheet. Each tooth punching sheet is provided with a first arc edge and a second arc edge; the circle center of the first arc edge is located on the center line of the tooth punching sheet. The circle center of the second arc edge is located between 1 / 4.5-1 / 3.5 bisectors from the side edge of the middle part of the tooth punching sheet on the corresponding side to the direction of the center line of the tooth punching sheet. The radius length of the first arc edgeranges from 150mm to 300mm, the radius length of the second arc edge ranges from 60mm to 20mm, and the arc length ratio of the first arc edge to the second arc edge ranges from 1.7:1 to 1.9:1. By controlling the radius ratio, the arc length ratio and the circle center position between the arc surfaces, the requirements of reducing the electromagnetic noise and vibration of the motor, improving thecontrol precision of the motor, reducing the loss and improving the working stability are met at the same time.

The invention discloses an automobile air intake system. The automobile air intake system comprises an air intake pipeline, an air filter, a throttle valve body or carburetor and a resonant cavity, wherein the air filter is communicated with the air intake pipeline, and the throttle valve body or carburetor is communicated with the air filter through the resonant cavity. According to the automobile air intake system, by additionally arranging the resonant cavity of a cavity structure in the rear end of the air filter, air can be stored when at a high flow speed and a large flow rate and released when at a low flow speed and a small flow rate, so that a balancing effect is achieved, the working stability of a complete automobile is improved, and accordingly the comfort of the complete automobile is improved; the problem that in an existing structure, air flows into a carburetor or throttle valve body directly and consequently air intake resistance is large or noise is high is avoided.

The invention discloses a multi-union lubricating oil pump set easy to maintain and low in pressure pulsation. The multi-union lubricating oil pump set comprises a pump set shell, first-stage oil supply pumps, multi-stage oil scavenging pumps, an end cover and a sealing base plate, inner rotors and outer rotors of the oil supply pump and the oil scavenging pump are driven by the same transmission shaft, and the oil supply pump and the oil scavenging pump are both arranged in the pump set shell; an end cover is fixed to the left end of the pump set shell, inlets of the multiple oil scavenging pumps and outlets of the multiple oil supply pumps are arranged on a flange on the right end face of the pump set shell, the flange is in butt joint with the pipeline end face of an engine accessory casing, a sealing base plate is fixed to the flange through a mooring screw, and the flange is in threaded connection with the engine accessory casing through mooring screws; and each oil supply pump comprises two pairs of rotors, and the two pairs of rotors are arranged in the circumferential direction at an interval of half a work cycle. The multi-union lubricating oil pump set improves the product maintainability and the external field maintainability, reduces the oil pump outlet pressure and flow pulsation and improves the working stability of a lubricating oil system.

The invention relates to the technical field of chain production equipment, and provides an automatic flattop chain production device and a production method so as to solve the problems that as existing flattop chains are formed and assembled through multiple processes, small difference in the chain plate dimension can be caused, and due to the deviation of chain links of the formed and assembledchains, the stability of the chains in the use process is affected. The automatic flattop chain production device comprises a forming mold, a mechanical arm mechanism, a chain assembling mechanism anda storage mechanism which are arranged from upstream to downstream along a flattop chain forming and assembling process, wherein the forming mold is used for forming chain plates of flattop chains, the mechanical arm mechanism is used for placing the chain plates of the flattop chains in a moving manner, the chain assembling mechanism is used for assembling the flattop chains, and the storage mechanism is used for stacking and feeding flattop chain raw materials. The automatic flattop chain production device and the production method are especially suitable for automatic forming and assembling of the flattop chains and have high social use value and broad application prospects.

The invention discloses a cleaned food automatic conveying apparatus for a kitchen. The automatic conveying apparatus comprises a worktable, a bracket, a cleaned vegetable box, a fixing frame and a clamping hand apparatus, wherein a main synchronous belt, a driving motor and a plurality of sliding rails are mounted on the worktable; the output end of the driving motor is connected with a belt wheel at one end of the main synchronous belt; a slidable sliding sleeve is mounted on the sliding rails in a matched way; the bottom of the sliding sleeve is connected with the main synchronous belt by using a screw fixing sheet; the top of the sliding sleeve is fixedly connected with the bracket by using a fixing plate; a rotary shaft motor, an auxiliary synchronous belt, a transmission shaft and a plurality of rails are fixedly mounted on the bracket; an output shaft of the rotary shaft motor is connected with one end of the transmission shaft by using a shaft coupler; the other end of the transmission shaft is connected with a belt wheel of the auxiliary synchronous belt; a rail sliding sleeve is mounted on the rails in a matched way; one end of the rail sliding sleeve is fixedly connected with the auxiliary synchronous belt; a cleaned vegetable box conveying apparatus is fixedly mounted at the other end of the rail sliding sleeve; a plurality of suction cups are mounted on the cleaned vegetable box conveying apparatus; and the top of each suction cup is connected with an air pump.

The invention discloses a damping delivery winding shaft with a crank arm for a winding machine. The damping delivery winding shaft comprises a winding shaft, the crank arm, a limited block, a friction roller, a cylinder and a damper, wherein the winding shaft is arranged on the crank arm; the crank arm, the limited block, the friction roller and the cylinder are all fixed onto a wallboard; the cylinder is connected with the crank arm; the damper is mounted on the cylinder. As the damper is connected in parallel to a deliver cylinder of a traditional winding shaft delivery mechanism, in the process that a winding shaft falls to the initial winding position, under the action of the damper, accelerated falling under the action of the weight of the winding shaft is prevented, impact of the winding shaft on equipment is reduced, equipment noise is reduced, stable falling of the winding shaft is realized and the operational stability of the winding machine is improved.

The invention discloses a spiral bevel gear machining method. The spiral bevel gear machining method is mainly characterized in that as for machining of a less-teeth bevel gear in a meshed spiral bevel gear pair, the axis of a machining cutter is perpendicular to a surface cone generatrix of the to-be-machined gear in mounting and positioning of the gear, and feed movement of the cutter axially along a shake plate needs to be added on the basis of regular movement of the cutter in the machining process. The machining method includes cutter setting, gear blank positioning and cutter cutting movement for forming tooth grooves. Cutter resultant movement includes rotational movement of the cutter along own axis, rotation movement of the cutter identical to the shake plate in angular speed, feeding movement of the cutter along the rotation axis of the shake plate and rotation movement of a gear blank along own axis. After a complete tooth groove is formed by machining, the gear blank is subjected to indexing, and the shake plate drives the cutter to rotate to an initial set cutting position. The cutting process is repeated until machining of all tooth grooves of the gear is finished.

A spunbonded nonwoven fabric of the present invention is characterized by being composed of a polyolefin fiber, wherein the average pore diameter of the nonwoven fabric surface is 0.1-25 μm, the maximum pore diameter is 50 μm or less, and the water pressure resistance per unit basis weight is 7 mmH2O / (g / m2) or more.

The invention discloses a device and method for replacing a vehicle battery pack, and belongs to the field of new energy vehicles. In order to solve the problems that existing battery pack replacing equipment is complex, heavy and high in cost, the vehicle battery pack replacing device comprises a bottom frame, a track used for a lifting mechanism to move on the bottom frame is arranged on the bottom frame, the lifting mechanism is connected with a lifting table, and a rolling plate used for making contact with a battery pack bottom plate is arranged on the lifting table. Butt joint locking pieces are arranged at the two ends of the side, making contact with the battery pack bottom plate, of the rolling plate, a groove is formed in the middle of the rolling plate, a dragging mechanism used for dragging the battery pack is arranged in the groove, and the dragging mechanism is connected with a driving piece so that the dragging mechanism can move in the groove. The rolling plate and the battery pack bottom plate are in butt joint to form a plane, a battery pack with wheels can be stably transited to the rolling plate, then the battery pack is conveyed through the dragging mechanism, and the conveying stability is high. The replacement method is low in cost and can realize flexible replacement of the battery pack.