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149results about How to "Avoid severe wear and tear" patented technology
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Controlling method of rough rolling breakdown bar camber
ActiveCN101224471APlay a guiding roleLow added valueGuiding/positioning/aligning arrangementsTension/compression control deviceAdditional valuesPosition control
The invention relate to a control technique of the rolling process of a rolling steel. The invention discloses a control method of a rough rolling intermediate billet camber. The control method combines a position control with a pressure control; in a multi-pass rolling of the positive-pass and reverse-pass of a roughing mill, the camber generation of the intermediate billet is restricted. The control method of the invention can reduce the additional value of the openness of a side guide plate, leads the flexible deformation of the intermediate billet between the inlet and the outlet of the roughing mill in the horizontal direction to be restricted by the side guide plate, reduces the camber of the intermediate billet, and prevents the severe abrasion which is caused by the long-term contact of the side guide plate and the intermediate billet.
Owner:BAOSHAN IRON & STEEL CO LTD
Intelligent control system and control method for scraper conveyer
InactiveCN103144936AAdjust posture in timeAvoid tooth skippingControl devices for conveyorsCurrent transducerAttitude control
The invention provides an intelligent control system and a control method for a scraper conveyer, which belong to the intelligent control systems for coal mine exploitation. The intelligent control system for the scraper conveyer comprises a laser scanning ranging device, a ray ranging transmitter, an ultrasonic level sensor, a current transducer, a master controller, a variable frequency and speed regulation controller, a coal crushing controller, a conveyor gesture controller and a conveyor chain stretching controller, wherein the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer transmit detection signals to the master controller in a wireless communication manner, and the master controller sends control instructions to the variable frequency and speed regulation controller, the coal crushing controller, the conveyor gesture controller and the conveyor chain stretching controller in the wireless communication manner. The running state of the scraper conveyer is mastered at any time and corresponding devices are controlled timely through monitoring of the laser scanning ranging device, the ray ranging transmitter, the ultrasonic level sensor and the current transducer, so that the scraper conveyer can be operated in an optimum running state.
Owner:CHINA UNIV OF MINING & TECH
Independent suspension system and crane with same
ActiveCN103522865AImprove reliabilityReduce unsprung massInterconnection systemsIndependent motionVehicle frame
The invention discloses an independent suspension system. Two suspension oil cylinders are arranged between wheel edges of wheels on two sides and a frame respectively, and a steering mechanism drives the wheels on the two sides to perform steering. Two upper V-shaped swing rods and two lower V-shaped swing rods are arranged corresponding to the wheels on the two sides. Rod connection end portions of the two upper V-shaped swing rods are hinged to the upper portions of the wheel edges of the wheels on corresponding sides through spherical hinges respectively, and rod separation end portions of the two upper V-shaped swing rods are hinged to fixing members fixed below the frame along the lateral direction. Rod connection end portions of the two lower V-shaped swing rods are hinged to the lower portions of the wheel edges of the wheels on corresponding sides through spherical hinges respectively, and rod separation end portions of the two lower V-shaped swing rods are hinged to the fixing members fixed below the frame along the lateral direction. By means of the independent suspension system, possible frustrating effects caused by the suspension oil cylinders can be avoided, mutual independent motion of the wheel on the left side and the wheel on the right side can be achieved reliably, adhesion conditions of the ground are fully utilized, and control stability of the complete machine is improved. On the basis, the invention further comprises a crane with the independent suspension system.
Owner:XUZHOU HEAVY MASCH CO LTD
Plasma drilling bit
ActiveCN104563882AAvoid severe wear and tearImprove efficiencyDrill bitsRate of penetrationWell drilling
The invention relates to a plasma drilling bit in the field of drilling bit tools. The technical scheme adopted by the invention is that a fluid passageway and an electrode through hole which respectively and axially communicated are preformed in a bit body; a high-voltage positive electrode and insulators are fixedly connected with the interior of the electrode through hole; the bottom part of the bit body is fixedly connected with an annular ground electrode; the bottom part of the high-voltage positive electrode is provided with a high-voltage panel mounting electrode; an annular interelectrode gap is reserved between the high-voltage panel mounting electrode and the annular ground electrode. The bit penetrates a plasma channel formed in front of to-be-drilled rock under the high-voltage pulse liquid phase microdischarge action to crush the rock, and does not need to be contacted with the surface of the rock, and mechanical lapping is not needed. The plasma drilling bit disclosed by the invention has the advantages that the abrasion of the bit can be reduced, the rate of penetration is increased, and the required energy is low; compared with the conventional mechanical rotary bit, the plasma drilling bit is low in cost and high in efficiency, and can also be applied to industry of mining and the like.
Owner:CHINA PETROCHEMICAL CORP +1
Rotary type vehicle-wheel airtightness detection machine
ActiveCN103868657AAvoid severe wear and tearEasy to judgeVehicle testingDetection of fluid at leakage pointMotor driveElectric machine
Owner:CITIC DICASTAL
Oblique plunger type pure water hydraulic swash plate pump
ActiveCN103184990AImprove the lubrication effectImprove cooling effectPositive displacement pump componentsPositive-displacement liquid enginesDrive shaftFresh water
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.
Owner:BEIJING UNIV OF TECH
Low-temperature low-pressure desulfurization wastewater evaporation treatment device and process
PendingCN106745427ALess corrosivePrevent fouling of equipmentWaste water treatment from gaseous effluentsWater/sewage treatment by heatingZero emissionCorrosion
The invention relates to a low-temperature low-pressure desulfurization wastewater evaporation treatment device and process. The device comprises a flue gas treatment system and an evaporation and crystallization system, wherein in the evaporation and crystallization system, flue gas form a dust collector is utilized to heat the circulating wastewater; a high-pressure atomizing nozzle and an air washer are arranged in an evaporator and are respectively used for atomizing the heated wastewater and washing steam; wastewater supernate is utilized to condense the generated steam; and the evaporated and concentrated slurry is sprayed into a flue duct after an air preheater, is evaporated and crystallized, and is removed by the dust collector. The device can be used for purifying power plant desulfurization wastewater and similar sewage. The related flash evaporation condition is a low-temperature low-pressure state, so that corrosion of wastewater for the evaporation system can be greatly reduced, the equipment is effectively prevented from scaling and slagging, the energy utilization is improved by utilizing the flue gas treatment system, salt and water separation can be achieved for a final product, and zero emission of desulfurization wastewater can be realized.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Double-head claw pump rotor and its molded line
ActiveCN108930650AAvoid severe wear and tearIncrease design parameter spaceRotary piston pumpsRotary piston liquid enginesEngineeringSharp point
The invention relates to a double-head claw pump rotor and its molded line. The molded line comprises an equidistance curve of a point meshing epicycloid, a modified arc segment, a tooth top arc segment, an intermediate connecting arc segment, an arc conjugate curve segment, and a tooth root arc segment. Two rotors adopt a central symmetrical structure. By setting the modified arc segment, the sharp points are eliminated, and severe wearing phenomenon of the rotors during operation can be avoided. The equidistance curve of the point meshing epicycloid and the modified arc segment are always spaced apart to avoid the formation of suction and exhaust closed volume, and a design parameter space of the rotor molded line is increased, the power consumption is reduced, and the pump efficiency isimproved. The molded line is designed in the double-head claw pump, compared with the other conventional pumps, the pump in the invention has the advantages of less wearing parts, compact structure,high pumping rate, no surge, and low vibration noise.
Owner:宝风压缩机科技(浙江)有限公司
Ore extraction and transfer device
ActiveCN107670768AAvoid the problem of impact and easy damage to the boxAvoid the problem of fragile cabinetsGrain treatmentsEngineering
Owner:湖北省华建石材股份有限公司
Semiaxis type pure-water hydraulic axial plunger pump supported by bearings in cylinder
ActiveCN103075316AImprove the lubrication effectImprove cooling effectPositive displacement pump componentsPositive-displacement liquid enginesFresh waterCylinder block
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.
Owner:BEIJING UNIV OF TECH
Car painting turnover frame
InactiveCN107350111AAvoid hard frictionAvoid severe wear and tearSpraying apparatusLocking mechanismIndustrial engineering
The invention relates to an automobile painting overturn frame. It solves the problems of unreasonable design and the like in the prior art. The car paint overturning frame includes two symmetrically arranged main supports and the two main supports are connected by connecting rods, and each main support is respectively provided with a vertical support tube and a vertical support tube whose lower end is inserted into the vertical support tube. The lifting column is provided with a rolling contact structure between the lifting column and the vertical support tube, and the upper end of each lifting column is respectively provided with a horizontal fixed tube and the lifting column or the fixed tube is connected with the lifting drive mechanism, The paint spray stand also includes two symmetrically arranged lifting frames, each of which is connected with a rotating shaft inserted in the fixed pipe and capable of rotating relative to the fixed pipe, and is provided between the rotating shaft and the fixed pipe. A locking mechanism capable of locking the rotating shaft and the fixed tube in the circumferential direction when the rotating shaft rotates to a set position. The advantage of the present invention is that it can improve the smoothness of lifting.
Owner:嘉善思捷机械有限公司
Elevator brake with emergency brake system and working method for elevator brake
ActiveCN109179138AIncrease contact areaLarge braking forceBrake typesElevatorsConductor CoilBrake shoe
The invention discloses an elevator brake with an emergency brake system and a working method for the elevator brake. The elevator brake comprises a brake spring, a coil winding, a guide post, an armature, an emergency brake assembly, a return assembly, a manual brake loosening rod, a pre-tightening force regulating rod, a combined supporting body, a tongue plate and a friction gate tile fixedly arranged on the tongue plate. When a car sliding phenomenon occurs, an emergency brake shoe tightly holds a brake wheel; when elevator maintenance is performed after emergency braking, if a distance between the tongue plate and the brake wheel reaches a threshold value when a capacitive type displacement sensor feeds back the occurred sliding phenomenon, a computer judges that the friction brake shoe needs to replace, otherwise, a barrel on the pre-tightening force regulating rod is manually rotated to increase pre-tightening force of the brake spring. The elevator brake can emergently brake, can determine maintenance time according to data acquired by a ring-shaped pressure sensor and the capacitive type displacement senor, and avoids the trouble that the brake screw needs to manually regulate frequently
Owner:ZHEJIANG SCI-TECH UNIV
Elevator brake adopting dual-braking system and braking method of elevator brake
PendingCN108263980AAvoid severe wear and tearLarge braking areaElevatorsHoisting equipmentsHydraulic cylinderBrake shoe
The invention discloses an elevator brake adopting a dual-braking system and a braking method of the elevator brake. Safety and stability of an existing elevator brake are poor. The elevator brake comprises a hydraulic end cover, end cover bolts, brake arms, a brake coil, synchronous bolts, an armature, tongue plate bolts, a tongue plate, a brake shoe friction plate, a manual adjusting bolt, guiding bolts, an adjusting anti-loosening spring, a coil groove, brake springs, a brake fixed plate, a hydraulic cylinder, a flat gasket, a spring gasket and a synchronous plate. According to the elevatorbrake and the braking method of the elevator brake, the contact of the brake shoe friction plate and a brake wheel is assisted by increasing the braking friction faces on the brake arms, the brakingarea is increased, and accordingly the braking force is increased. The braking friction faces of the brake arms and the arc face of the brake shoe friction plate on the tongue plate are located on thesame cylinder face, the brake arms and the brake shoe friction plate synchronously move during braking, and accordingly it is guaranteed that the brake wheel is held tightly at the same time; and elevator dual braking can be achieved, elevator slipping or elevator brake movement is prevented, and the braking reliability of the brake is improved.
Owner:ZHEJIANG SCI-TECH UNIV
Autorail
ActiveCN102935790AAvoid severe wear and tearExtended service lifeRail and road vehiclesVehicle frameSprocket
The invention provides an autorail which comprises wheels, a cab and an aerial work platform which are arranged on a frame and also comprises a braking system, wherein the braking system comprises an air compressor, a braking modulator and two sets of braking actuating mechanisms; wheel axles of liftable front and back guide wheels are respectively provided with second brake discs; one braking clamp in one braking actuating mechanism is arranged on a first brake disc and the other braking clamp is arranged on the second brake discs; the aerial work platform comprises a slewing mechanism, a base, a telescopic arm, a folding arm, a driving oil cylinder and a working bucket; a lower-leveling oil cylinder is also arranged between a fixed arm and the base; an upper-leveling oil cylinder is also arranged between a slide arm and the folding arm; a first chain wheel is hinged at the hinging position of the folding arm and the slide arm; and a second chain wheel is arranged at the hinging position of the folding arm and the working bucket. The autorail has the advantages that the braking performance of the autorail on the railway is increased and the aerial work platform is convenient to adjust.
Owner:青岛中车四方轨道车辆有限公司
Impact type diaphragm micro jet dispensing device
InactiveCN105327829AJet easyPrecision injectionLiquid surface applicatorsCoatingsSpray nozzleEngineering
The invention relates to dispensing devices, particularly to an impact type diaphragm micro jet dispensing device which comprises an air cylinder, a gland, a stroke adjustment lever, a piston rod, springs, a jet chamber, a diaphragm, a nozzle and a high-frequency electromagnetic valve, wherein the gland is mounted above the air cylinder; the stroke adjustment lever is mounted in the gland through screw threads; the piston rod is arranged in the air cylinder; the springs are arranged between the gland and the piston rod, and are pressed on the upper end surface of the piston rod; the piston rod is positioned below the stroke adjustment lever; the jet chamber is mounted below the air cylinder; the diaphragm is mounted between the jet chamber and the air cylinder in a clamping manner, and is positioned below the piston rod; the nozzle is mounted on the lower end surface of the jet chamber; and the high-frequency electromagnetic valve is communicated with the air cylinder. According to the impact type diaphragm micro jet dispensing device, the impact force of the piston rod is transferred to the liquid in the jet chamber through the diaphragm, and the direct contact of the piston rod and the nozzle and the glue liquor is avoided, so that the particles in the glue liquor are not damaged during the jet of the glue liquor containing particles, the severe abrasion of the nozzle is avoided, and the use cost is reduced.
Owner:CHANGZHOU GAO KAI PRECISION MACHINERY CO LTD
Self-aligning roller bearing for main shaft of wind turbine generator and design method thereof
ActiveCN102619875AExtended service lifeReduce contact stressRoller bearingsShaftsFailure rateEngineering
The invention relates to a self-aligning roller bearing for a main shaft of a wind turbine generator and a design method thereof. The self-aligning roller bearing comprises a bearing outer ring, a bearing inner ring and two rows of rollers; and the self-aligning roller bearing is characterized in that the length of one row of rollers close to a wind wheel side on the self-aligning roller bearing is smaller than that of the other row. The design method of the bearing comprises the steps of: a, establishing a coordinate system; b. calculating stress of the main shaft by utilizing a formula F1=1 / 2C<F>RhoV<2>; c, calculating stress of the self-aligning roller bearing; d-1, calculating contact stress; d-2, fetching a lower limit value; d-3, fetching an upper limit value; d-4, implementing the calculation by utilizing a difference method, and d-5, calculating a proportionality factor satisfying an absolute value of (U - V) is smaller than 3U / 100 or an absolute value of (U - V) is smaller than 3V / 100, and designing a bearing meeting the requirement. According to the bearing and a bearing calculation method, the contact stress between each roller and a raceway can be effectively reduced; and a finite element method and the difference method are adopted, so that the difference value between the contact stresses of the two rows of rollers can be controlled within 3 percent, thereby solving the unbalance stress problem of the roller, reducing the failure rate and improving the service life of the bearing.
Owner:CRRC WIND POWER(SHANDONG) CO LTD
Automatic operation mechanism for switching-on and switching-off of circuit breaker
ActiveCN105938784ANot easy to damageExtended service lifeContact driving mechanismsProtective switch operating/release mechanismsEngineeringPosition sensor
The invention relates to an electric operation mechanism for a circuit breaker, in particular, an automatic operation mechanism for the switching-on and switching-off of a circuit breaker. The automatic operation mechanism comprises a shell. A controller, a motor and a first sector gear are arranged in the shell, wherein the first sector gear is in rotation fit with the shell, the first sector gear is connected with the motor through a gear reduction mechanism, the first sector gear is provided with a connecting mechanism used for connecting the on-off switch of the circuit breaker, and the motor is connected with the controller through a wire. The automatic operation mechanism is characterized in that a first deflector rod as well as an upper position sensor and a lower position sensor which are used for sensing the position of the deflector rod are arranged in the shell, wherein the first deflector rod is in linkage fit with the gear reduction mechanism, the first deflector rod is connected with a pin shaft for connecting the tripping device of the circuit breaker through a linkage mechanism, and the upper position sensor and the lower position sensor are both connected with the controller through wires. The automatic operation mechanism has the advantages of long service life and simple structure.
Owner:WUXI ZIZO ELECTRIC
Balancing suspension and automobile applying same
ActiveCN102582390APrevent leakageAvoid severe wear and tearLeaf springsInterconnection systemsEngineeringBalance shaft
Owner:WEICHAI POWER CO LTD
Electric control rotating table with lubricating mechanism and for welding production line and application method of electric control rotating table
ActiveCN111805237AImplement automatic reminder additionAvoid severe wear and tearWelding/cutting auxillary devicesOther manufacturing equipments/toolsOil canProduction line
The invention relates to the technical field of welding production, in particular to an electric control rotating table with a lubricating mechanism and for a welding production line and an application method of the electric control rotating table. The electric control rotating table comprises a bottom plate, a lubricating device, a cleaning device and a protection device. The cleaning device is arranged at the top end of the bottom plate. The center position of the top end of the bottom plate is fixedly connected with a first sliding rail. The top end of the first sliding rail is in sliding connection with a fixed seat. A supporting frame is rotationally connected to the top end of the fixed seat. The lubricating device is arranged on the outer side of the supporting frame. In the electric control rotating table, through the arrangement of an oil box and a backup box, the arrangement cooperates with sliding connection of the oil box and a sliding plate, fixed connection of a support and a control switch, elastic force of a spring to a piston plate and communication of a conveying pipe with the backup box and the oil box, when a device is used, automatic lubricating to the device and automatic adding prompting to lubricating oil can be achieved, and therefore the phenomenon that wear is severe due to the fact that the device is lack of lubricating oil is avoided, and the service life of the device is guaranteed.
Owner:WUHU CHANGRUI AUTO PARTS
Wear-leveling power-down data protection method for smart card
ActiveCN107957921AReduced service lifeUniform wearRedundant operation error correctionElectricitySmart card
The invention belongs to the technical field of radio frequency electronic application, and particularly relates to a wear-leveling power-down data protection method for a smart card. Every time new current affair write data backup is opened, marked record items which are in a first backup mark zone and in a used backup state can be detected and skipped, then following detection continues to be conducted till the first marked record item which is in an available backup state currently is found, and the index value of the first marked record item is marked as i. In this way, the initial addressof the current affair write data backup is mapped to the next sector start of backup data, the situation is avoided that frequent erasing is conducted due to backup write, accordingly, the severe wear to a certain fixed sector is caused and the service life of the smart card is reduced, and the wear-leveling aim is achieved.
Owner:WUHAN RUINAJIE ELECTRONICS TECH
Transportation device of a power transformer
InactiveCN108974060AImprove shock absorptionFix damageHand carts with multiple axesSpecial purpose weighing apparatusMicrocomputerTransformer
The invention discloses a transport device of a power transformer, including the base, the bottom of the inner cavity of the base is fixedly connected with a plurality of shock absorbing cylinders, The inner cavity of the shock absorbing cylinder is fixedly connected with a shock absorbing spring, the inner cavity of the shock absorbing cylinder is fixedly connected with a movable plate at the topof the shock absorbing spring, the top of the movable plate is fixedly connected with a connecting rod, the top of the connecting rod is fixedly connected with a fixing plate, and the top of the fixing plate is fixedly connected with a carrier plate. As that base, damping cylinder, damping spring, movable plate, fixing plate, load plate, weighing sensor, bump, vertical bar, control panel, singlechip microcomputer, digital display, loudspeaker, universal wheel and accumulator cooperate with each other to solves the problem that the traditional power transformer transport device has poor shockabsorption effect, and the transport device will bear greater pressure when the power transformer is transported, which is easy to lead to the damage of the transport device for a long time.
Owner:河南许智电力科技有限公司
Ball grinding mill shell liner provided with grading tendon
InactiveCN101947489AGrading effect is goodAvoid severe wear and tearGrain treatmentsEngineeringBall mill
The invention discloses a ball grinding mill shell liner provided with a grading tendon. A strip-type bulging tendon is arranged on the base plate of the shell liner, and is not vertical to the shell liner along the movement direction of a ball grinding mill shell; the included angle of the strip-type bulging tendon and the shell liner along the movement direction of the ball grinding mill shell is 95 degrees to 120 degrees; and the height of the grinding tendon is more than the radius of a small-diameter grinding ball, and smaller than the diameter of the small-diameter grinding ball and the radius of a big-diameter grinding ball. The ball grinding mill shell liner of the invention utilizes the grading tendon to push a part of small-diameter grinding balls to the discharge hole of the ball grinding mill so as to the spherical surface height of the feeding hole of the ball grinding mill to be lowered, and the space accommodating mineral aggregate on the feeding hole to be increased, thus effectively improving the crushing efficiency of the mineral aggregate; and most of the big-diameter grinding balls can only cross the grading tendon from the small-diameter grinding ball, thus avoiding the grading tendon from being abraded and ensuring the lower service life of the grading tendon. The ball grinding mill shell liner of the invention has simple and reasonable structure, is easy to process and manufacture, is not easy to abrade, has obvious grading effect, and can effectively improve the crushing and grinding efficiency of the ball grinding mill.
Owner:湖南华民控股集团股份有限公司
Liquid storing tank for air conditioner
InactiveCN1752666AEqual quantityPressure balanceSpace heating and ventilation detailsRefrigeration componentsInternal pressureLiquid tank
The present invention discloses a liquor storage tank for air conditioning machine. It includes supply pipe connected with outdoor heat exchanger, several main bodies for supplying refrigerant and lubricating oil to every compressor and distributor which is placed under the supply pipe and is used for uniformly supplying refrigerant and lubricating oil to several main bodies. Besides, said invention also provides the working principle of said liquor storage tank.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
Controlling method of rough rolling breakdown bar camber
ActiveCN100566866CPlay a guiding roleLow added valueGuiding/positioning/aligning arrangementsTension/compression control devicePosition controlPressure controlled ventilation
Owner:BAOSHAN IRON & STEEL CO LTD
Refrigerating valve
The valve is composed of the valve body, valve cap, valve shaft, valve petal and valve rod cover. The inlet and outlet pipes are fixed on the valve body. The valve rod cover is set on the cap. The valve petal is set at the front end of the shaft. The front end of the valve shaft and sealing ring are connected. The valve body is connected with the valve cap through the bolt and sealed by the '0' style sealing ring. The valve shaft is sealing connected with the valve petal, the cone interface forms the converse sealing. The sealing ring is settled between the sealing cap and valve rod cover, and between the valve shaft and valve cap.
Owner:许炎章
Construction method for crossing of shield through sand and gravel backfill area
The invention discloses a construction method for crossing of a shield through a sand and gravel backfill area. The construction method comprises the steps that before the shield crosses through the sand and gravel backfill area, through a sleeve valve pipe, reinforcing slurry with certain pressure is injected into the sand and gravel backfill area needing to be reinforced; when the shield conducts tunneling to be away from the sand and gravel backfill area by a certain distance, a shield cutterhead is overhauled, and it is ensured that the shield cutterhead enters the sand and gravel backfillarea in an intact state; the shield tries to conduct tunneling into the sand and gravel backfill area by a section of distance, tunneling parameters and change of the sand and gravel backfill area inthe tunneling trying process are monitored, and the tunneling parameters and modes suitable for the sand and gravel backfill area are obtained; and the shield crosses through the sand and gravel backfill area according to the obtained tunneling parameters and modes. According to the construction method, the filling effect of loess cement paste slurry in a loose peddle layer is good, clay cement slurry with sample cores visible partially wraps peddle, consolidation is good, certain strength is achieved, in the shield propelling process, the soil pressure can be built, and shield propelling safety is ensured.
Owner:SHANGHAI TUNNEL ENG CO LTD +1
Cater-pillar track chassis and caterpillar crane
ActiveCN103318282APrevent tooth gnawingAvoid severe wear and tearEndless track vehiclesCranesDrive wheelRolling resistance
The invention relates to a cater-pillar track chassis, which comprises a cater-pillar track frame, a driving wheel mounted at one end part of the cater-pillar track frame, a plurality of thrust wheels mounted at the bottom part of the cater-pillar track frame, and a cater-pillar track plate wrapping the driving wheel, the plurality of thrust wheels and the cater-pillar track frame, wherein a rolling friction mechanism capable of rolling along with the moving cater-pillar track plate is arranged between the driving wheel and the farthest thrust wheel which is the closest to the driving wheel. The invention further relates to a caterpillar crane with the cater-pillar track chassis. According to the invention, the rolling friction mechanism is arranged between the driving wheel and the farthest thrust wheel and can roll along with the moving cater-pillar track, thereby playing a role of propping against the cater-pillar track plate in space between the driving wheel and the farthest thrust wheel, preventing a phenomenon of tooth gnawing, and changing the original main sliding friction way into a main rolling friction way, which can effectively avoid more serious abrasion generated between the cater-pillar track frame and the cater-pillar track plate.
Owner:XCMG CONSTR MACHINERY
High-strength anti-collision rubber fender
InactiveCN112429167AHigh strengthAvoid severe wear and tearVessel cleaningClimate change adaptationFenderSupport plane
The invention relates to the technical field of rubber fenders, and discloses a high-strength anti-collision rubber fender which comprises a rubber fender body, a fixing seat is fixedly mounted on theleft side of the inner wall of the rubber fender body, and mounting seats are movably mounted at the top and the bottom of the rubber fender body. A fixing bolt penetrating through the fixing seat and extending to the bottom of the mounting seat is movably mounted at the top of each mounting seat, a supporting frame is fixedly mounted on the right side of the fixing seat, the outer wall of the supporting frame is sleeved with a sliding block, and a reset spring extending to the outer wall of the supporting frame is fixedly mounted on the opposite side of the sliding block. According to the high-strength anti-collision rubber fender, a core rod is driven by a supporting rod and a connecting base to move leftwards or upwards or downwards in an XOR mode, the core rod drives the reset springto be compressed through the sliding block and secondarily absorbs the collision capacity of a buffer plate, then the rubber fender body absorbs part of the collision capacity, and the multiple buffering and damping effects are achieved, so that the anti-collision performance of the rubber fender is improved.
Owner:扬州市远望橡胶有限公司
Improved structure of clamping jaw for printed circuit board drill bit ring assembling machine
InactiveCN103522034AAvoid severe wear and tearAvoid the problem of not being able to afford the drillGripping headsMetal working apparatusPlastic materialsEngineering
The invention discloses an improved structure of a clamping jaw for a printed circuit board drill bit ring assembling machine. The improved structure is characterized in that the end portions of a clamping head of a drilling bit handle clamping type clamping jaw for an existing ring assembling machine extend downwards to form the clamping ends, and the opposite faces of the pair of clamping ends are in a shape matched with the peripheral face of a lantern ring so that the lantern ring on a drill bit can be directly clamped rather than the traditional mode that the drill bit drill handle portion is clamped. The improved clamping jaw is free of influences of the diameter of the drill bit and the length of a knife, the problem that the drill bit can not be clamped by the clamping head is solved, and due to the fact that the lantern ring is made of plastic materials, the situation that the clamping jaw is seriously abraded is avoided.
Owner:竞陆电子(昆山)有限公司
Anti-adhesion device for tobacco packaging box before printing
The invention discloses an anti-adhesion device for a tobacco packaging box before printing and relates to the technical field of manufacturing and printing of tobacco packaging boxes. The anti-adhesion device comprises a feeding conveyor belt, a discharging conveyor belt, a bracket, a pushing mechanism, a paper pressing mechanism and an alignment mechanism, wherein two ends of the pushing mechanism are connected with the feeding conveyor belt and the discharging conveyor belt respectively to form a U-shaped structure; the pushing mechanism is provided with a rolling wheel, a guide air cylinder and a guide plate; the paper pressing mechanism is located at one end, close to the discharging conveyor belt, of the pushing mechanism, and comprises a pressing-down air cylinder and a pressing-down column which are located above the pushing mechanism, and a jacking air cylinder and a jacking column which are located below the pushing mechanism; and the alignment mechanism is located at one end, close to the discharging conveyor belt, of the pushing mechanism and comprises an alignment air cylinder and a corresponding V-shaped alignment unit along a conveying direction. According to the anti-adhesion device disclosed by the invention, a specific part of the packaging box is pressed and folded so that the problem that the packaging box is adhered is effectively solved; sharp corners of the packaging box are prevented from being seriously abraded; and an order state of the packaging box is kept and the quality of the packaging box is ensured.
Owner:新松机器人联合研究院(潍坊)有限公司
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