57results 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 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 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.

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 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 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.

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.