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37results about How to "Reduce swing angle" patented technology

Floating fan base with flare type tension legs, marine wind-driven generator and construction method

ActiveCN103818523AStable stateOvercome the defect of excessive horizontal movementFinal product manufactureWind motor supports/mountsWind drivenEngineering
The invention discloses a floating fan base with flare type tension legs, a marine wind-driven generator and a construction method. The floating fan base comprises a top supporting platform, a bottom supporting structure, at least three hollow stand columns and a ballast regulating system, wherein the top supporting platform is used for supporting a pylon, blades and a wind-driven generator set; the bottom supporting structure is connected with multiple tension legs; the top supporting platform is connected with the bottom supporting structure via the hollow stand columns, the hollow stand columns are arranged around the vertical center line of the floating fan base, and each stand column inclines outwards from a lower end to an upper end relative to the vertical center line of the floating fan base; the ballast regulating system is arranged in the stand columns and / or the bottom supporting structure. The marine wind-driven generator of the base with the structure has excellent movement performance, integral wet towing can be performed, and the floating fan base and the marine wind-driven generator are convenient to manufacture, assemble and mount.
Owner:XINJIANG GOLDWIND SCI & TECH

Novel cutter-exchange mechanism for manipulator

A new robot knife changing mechanism comprises robot oscillating device installed on X axis linear sub guide through the second sledge and connected with the second oil cylinder of the first sledge that installs on the Y axis linear sub guide and connects with the first oil cylinder, with the robot oscillating device composed of the robot connected with the oscillating cylinder with 90 degree oscillation, and the robot can link with the second oscillating cylinder with 180 degree oscillation. It is small in oscillating angle, quick in knife changing speed, better in component machining process, with improved knife changing reliability.
Owner:NANTONG MACHINE TOOLS GROUP

Stepping type hoisting platform

The invention relates to the technical field of hoisting devices and particularly relates to a stepping type hoisting platform. The stepping type hoisting platform comprises a working table board, positioning locks, a moving bracket, a pedal, a pedal bracket, a steel cable, a supporting framework, a steel cable connector, crosspieces, a pulley, a resetting spring and a table board bracket, the platform is characterized in that the supporting framework is provided with the plurality of crosspieces; the table board bracket is sleeved on the supporting framework; the moving bracket is mounted in the table board bracket and is sleeved on the supporting framework; the working table board is fixedly connected with the table board bracket; the working table board is provided with a first positioning block and the moving bracket is arranged above the working table board; the moving bracket is provided with a second positioning lock; one end of the resetting spring is connected with the bottom of the moving bracket; the pedal is arranged between the moving bracket and the working table board. Compared with the prior art, the stepping type hoisting platform has the advantages of simple structure, low construction cost, accordance with human engineering, capability of meeting the requirements of different working types, high safety, light weight, convenience for carrying, high working efficiency and convenience for installation.
Owner:张辉

Novel anti-swing and positioning control method and device for bridge crane

InactiveCN108828959AGuaranteed closed-loop asymptotic stabilityImprove control effectLoad-engaging elementsAdaptive controlUltrasound attenuationClosed loop
The invention discloses a novel anti-swing and positioning control method for a bridge crane, and the method comprises the steps: building a T-S nonlinear fuzzy model; designing a fuzzy controller through a parallel distributed compensation (PDC) control structure according to the T-S nonlinear fuzzy model, and obtaining a PDC control law u(t); and calculating a feedback gain matrix Fi through anLMI with the attenuation rate. The controller can guarantee the closed-loop asymptotic stability of the system, and the positioning, anti-swing and anti-interference performances are better. When a trolley moves, the maximum swinging angle of a load is smaller, and the effective load swinging is well inhibited. After the trolley arrives at a target position, the swinging angle quickly disappears,and the anti-interference performance does not change with the change of an expected position and the mass of the load, so the robustness is better.
Owner:TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Buoy used in marine environment

The invention provides a buoy used in a marine environment. The buoy comprises a top frame, a buoy body, a tail pipe and a balance weight which are sequentially connected from top to bottom, wherein components for navigation and / or marine environment monitoring are placed on the top frame, the buoy body is used for placing a storage battery and / or a control element, providing buoyancy for the whole buoy and reducing a swinging angle of the buoy body, the balance weight is connected with an anchor through an anchor system to anchor the buoy, the buoy body comprises an upper plate, a sealing barrel, a rotating barrel and a lower plate, and the buoy is further provided with a corrosion anode. The buoy is advantaged in that the larger wet surface area under the condition of the same water plane can be obtained, resistance of the seawater to the buoy body is increased, moreover, the restoring force of the buoy is increased, and a swinging angle of the buoy can be effectively reduced, the buoy is convenient to assemble and transport, by corroding an anode, the electrolysis process of a metal part on the buoy is slowed down, and the corrosion condition of a metal part on the buoy in the marine environment is improved.
Owner:吴江新华航标制造有限公司

Group hole measurement swing angle planning method based on three-coordinate probe

The invention relates to the field of aircraft geometric quantity measurement, in particular to a group hole measurement swing angle planning method based on a three-coordinate probe. The method comprises the following steps: 1) solving a limit included angle alpha between the probe and a hole without interference; 2) generating a machine tool node Ai by taking 2alpha as an interval; 3) solving the relative swing angle of the machine tool, and establishing a set X; 4) solving the number of elements which do not exceed alpha from the X; 5) taking out the node Aii with the largest element number; (6) if Yi is a null set, reducing the interval, dividing again to generate more dense nodes, and repeating the step (3) and the step (5); and 7) after the Yi is removed, if X is a null set, completing planing and if X is not a null set, repeating the step 4) until X is a null set. According to information such as the size of the three-coordinate probe and measurement parameters of the group hole, group hole measurement under the machine tool swing angle can be realized as little as possible, the swing angle needing to be calibrated is reduced, and the calibration efficiency of the group holehigh-precision measurement based on the three-coordinate probe is improved.
Owner:CHENGDU AIRCRAFT INDUSTRY GROUP

Control arm assembly

The invention relates to a control arm assembly which is applied to a vehicle independent suspension structure. The control arm assembly comprises two connecting arms and three spherical hinge structures, the two connecting arms form a V shape, and the three spherical hinge structures are arranged on the end portions of the two connecting arms respectively. One end portions of the two connecting arms are together connected to the first spherical hinge structure of the three spherical hinge structures, the other end portions of the two connecting arms are connected to the second spherical hinge structure and the third spherical hinge structure of the three spherical hinge structures respectively, the first spherical hinge structure is used for being connected with an axle wheel edge steering knuckle of a vehicle, and the second spherical hinge structure and the third spherical hinge structure are used for being connected with a vehicle frame of the vehicle. The control arm assembly can avoid movement interference between tires and a suspension and the vehicle frame in the vertical jumping process and the steering process of the tires as much as possible, a longer control arm structure also can be adopted to reduce the tilt angle of the control arm when the tires jump, the optimization difficulty of the control arm is reduced, and the stress condition of the control arm is improved.
Owner:XUZHOU HEAVY MASCH CO LTD

Cutter for cutting machining of blade lug boss characteristics

InactiveCN105414576AIncreased processing contact areaProcessing parameter improvementCutting insertsTurning toolsEngineeringAlloy
The invention provides a cutter for cutting machining of blade lug boss characteristics. The cutter is capable of solving easy-to-happen problems of long machining time, low machining efficiency, severe cutter wear, high production cost and low blade lug boss surface quality during the cutting machining of the blade lug boss characteristics by using a hard alloy ball-end cutter at present. The cutter is a large-angle taper cutter, and comprises a lateral conical surface and a bottom R1 angle, the two of which are in smooth transition and integrally connected with each other; the bottom R1 angle is consistent with an R2 angle of each blade lug boss characteristic to be machined in dimension; and the lateral conical surface is a cutting edge of the cutter.
Owner:WUXI TURBINE BLADE

Valve assembly for connecting a heat exchanger of a hot water discharging device to a district heating system

Disclosed is a valve assembly (6) for connecting a heat exchanger (1) of a hot water discharging device to a district heating system. Said valve assembly (6) comprises a valve (20) which is located on a primary side and controls a flow of heat exchange fluid through a primary side (2) of the heat exchanger (1), and a pressure-controlled valve (40) that is located on a secondary side and acts upon a flow of process water through a secondary side (3) of the heat exchanger (1). The valve (20) located on the primary side can be actuated by the valve (40) located on the secondary side. In order to simplify the production of such a valve assembly, the valve (40) that is located on the secondary side is provided with an adjustable neutral opening (44).
Owner:DANFOSS AS

Spiral double-rocker guide rod groove cam combination space mechanism for sliding-plug door

ActiveCN102305007AThe plug seal of the plug door is reliableSierra seal is reliablePower-operated mechanismDoor arrangementCouplingEngineering
The invention discloses a spiral double-rocker guide rod groove cam combination space mechanism for a sliding-plug door, relates to a sliding and plug, sealing, opening and closing mechanism for the sliding-plug door for a vehicle, in particular to the spiral double-rocker guide rod groove cam combination space mechanism for the sliding-plug door of high-speed rail or other railway vehicles. The mechanism comprises a motor, a coupler, a screw, a bearing shaft, a guide rod, a guide rod sleeve, a shaft sleeve, a door carrying rocker, a nut, a short rocker, a door handle, a roller, a roller shaft, a groove cam, a door leaf and a door frame, wherein a spiral mechanism consists of the screw, the nut and the door frame; a double-rocker guide rod mechanism consists of the rocker, the short rocker, the guide rod, the guide rod sleeve, the nut, the bearing shaft, and the shaft sleeve; a groove cam mechanism consists of the bearing shaft, the rocker, the roller, the roller shaft, the groove cam, the door handle, the door leaf and the door frame; the spiral mechanism, the double-rocker guide rod mechanism, and the groove cam mechanism are connected to form the spiral double-rocker guide rod groove cam combination space mechanism; the door frame is fixedly connected with a vehicle body; and the motor which is fixed on the door frame is connected with the screw through the coupler.
Owner:江苏振邮科技产业投资管理有限公司

Reciprocating propeller

There is disclosed a reciprocating propeller, in which a propeller-blade is made up of a propeller rod, propeller ribs and a propeller surface made of elastic material, so it can oscillate back and forth in the range less than or equal to 180 deg. By the action of the propeller surface torsion and whipping of the propeller surface tip, the invention can provide driving force for airplanes and ships.
Owner:邵跃波 +1

Frame structure for wheel type engineering machine

The invention relates to a structure of wheel projective mechanical frame, wherein said frame comprises: a front frame and a back frame; said front frame is a box, formed by upper beam, lower beam, front panel, back panel, and two side wing plates; the cylinder base in at the middle of upper beam; two wing boxes are at two ends of upper beam; the box hinge support is under the back panel; the bridge mounting plates are at two ends of lower beam; the front and back frames are connected via rotational couple; said rotational couple is at the axial center of front and back driving bridges; the front bridge is fixed, and the back bridge swings. The invention can be used in small wheel mechanical machine, with long service life, high support ability, flexible operation and high stability.
Owner:鞍山经纬海虹农机科技有限公司

Servo drive belt variable pump low-speed control hydraulic circuit

The invention discloses a servo drive belt variable pump low-speed control hydraulic circuit. A circuit oil filter F2 is connected with a system oil outlet T and a system safety valve V1, a system oil inlet P is connected with the system safety valve V1, a variable plunger pump P2 and a control oil return-prevention one-way valve V2, the variable plunger pump P2 is connected with a servo motor MTR, an oil absorption oil filter F1 and an oil pump oscillating angle control valve V4, and the control oil return-prevention one-way valve V2 is connected with a pressure gage B1, the oil pump oscillating angle control valve V4, an energy accumulator F3 and a pressure release valve V3. The oil pump displacement is variable and adjustable, and the magnitude of the oscillating angle of an oil pump can be adjusted according to different requirements so that different working condition requirements, particularly occasions with a low speed requirement can be met; and the displacement output is reduced through reduction of the oscillating angle of the oil pump, the flow requirement of a system is met in the manner of increasing the rotation speed, rotation speed setting of servo power is based on the limiting value of the rotation speed, and the two parameters are matched within the stably-controlled range.
Owner:WUXI HAITIAN MACHINERY

Braking device for joystick type vehicles

Provided is a joystick type vehicle braking device that can achieve miniaturization of a linkage mechanism and ensure good operation of a hydraulic master cylinder for linkage. The mechanical rear wheel brake (3) is actuated by operating the brake pedal (5) that rotates around the fixed shaft (9), and via the interlocking mechanism (6) including the interlocking hydraulic master cylinder (12) The hydraulic front wheel brake (2) is operated in conjunction with it. The linkage mechanism (6) is equipped with: a linkage hydraulic master cylinder (12); a balance rod (13), the middle part of which is rotatably supported on the outer surface of the upper end of the transmission arm (5b), and the upper end is connected to the rear wheel. The connecting part (8) for the operation of the brake (3); the hydraulic input rod (14) is rotatably supported on the outer surface of the lower side of the transmission arm (5b) by using the fixed shaft (9), and the upper side can be connected with the balance rod (13) It is rotatably connected and protrudes downward from the fixed shaft (9), and an operating arm (14a) for operating the interlocking hydraulic master cylinder (12) protrudes from the lower end.
Owner:HITACHI ASTEMO LTD

Spiral double-rocker guide rod groove cam combination space mechanism for sliding-plug door

ActiveCN102305007BThe plug seal of the plug door is reliableSierra seal is reliablePower-operated mechanismDoor arrangementCouplingEngineering
The invention discloses a spiral double-rocker guide rod groove cam combination space mechanism for a sliding-plug door, relates to a sliding and plug, sealing, opening and closing mechanism for the sliding-plug door for a vehicle, in particular to the spiral double-rocker guide rod groove cam combination space mechanism for the sliding-plug door of high-speed rail or other railway vehicles. The mechanism comprises a motor, a coupler, a screw, a bearing shaft, a guide rod, a guide rod sleeve, a shaft sleeve, a door carrying rocker, a nut, a short rocker, a door handle, a roller, a roller shaft, a groove cam, a door leaf and a door frame, wherein a spiral mechanism consists of the screw, the nut and the door frame; a double-rocker guide rod mechanism consists of the rocker, the short rocker, the guide rod, the guide rod sleeve, the nut, the bearing shaft, and the shaft sleeve; a groove cam mechanism consists of the bearing shaft, the rocker, the roller, the roller shaft, the groove cam, the door handle, the door leaf and the door frame; the spiral mechanism, the double-rocker guide rod mechanism, and the groove cam mechanism are connected to form the spiral double-rocker guide rod groove cam combination space mechanism; the door frame is fixedly connected with a vehicle body; and the motor which is fixed on the door frame is connected with the screw through the coupler.
Owner:江苏振邮科技产业投资管理有限公司

Bridge crane anti-swing positioning subsection control method based on energy coupling

The invention provides a bridge crane anti-swing positioning subsection control method based on energy coupling, and aims to solve the problem that traditional energy control cannot meet requirements in occasions with high anti-swing requirements, and the problems of buffeting and slow response speed in positioning and swing elimination of a bridge crane controlled by traditional energy coupling. On the basis of traditional energy control, trolley acceleration and deceleration information is added, meanwhile, a segmented control method is introduced to add the trolley acceleration and deceleration information in an anti-swing stage to construct a Lyapunov function, and a controller is designed through the Lyapunov method. According to the bridge crane anti-swing positioning subsection control method based on energy coupling, the anti-swing performance of the bridge crane is improved; the method is compared with enhanced coupling control and energy coupling control, and results are shown in Figure 2 to Figure 9; and according to the method, the load swing angle can be effectively restrained in the operation process of the bridge crane, accurate positioning of a trolley is achieved, meanwhile, the anti-swing performance is improved, and load residual swing is eliminated.
Owner:HENAN UNIV OF SCI & TECH

A penetrating seedling picking device and one-way feed seedling picking method

The invention discloses a penetrating type seedling picking device and a one-way feed seedling picking method, and relates to the technical field of crop pot seedling transplanting; the penetrating type seedling picking device includes a driving mechanism and a seedling picking arm; the driving mechanism is used to Drive the seedling-taking arm to perform the corresponding seedling-taking action and the seedling-putting action; the seedling-taking arm includes a support, a slider, a seedling-taking device and a seedling pushing device, and the support is fixed on the non-circular planetary wheel in the drive mechanism, The slider is hinged on the bracket, the seedling picking device and the seedling pushing device are connected to the driving mechanism through a crank and a connecting rod, the crank is fixed on the planet carrier, one end of the connecting rod is hinged on the crank, and the other end is hinged on the pushing mechanism. On the stalk. The present invention realizes efficient and low-damage seedling picking of plug seedlings based on the one-way feed seedling picking method of the above-mentioned penetrating seedling picking device, and only needs to feed seedlings in a single direction, which simplifies the structure of the seedling feeding system and is beneficial to ensure Integrity of the pot substrate.
Owner:JIANGSU UNIV

Valve assembly for connecting a heat exchanger of a hot water discharging device to a district heating system

Disclosed is a valve assembly (6) for connecting a heat exchanger (1) of a hot water discharging device to a district heating system. Said valve assembly (6) comprises a valve (20) which is located on a primary side and controls a flow of heat exchange fluid through a primary side (2) of the heat exchanger (1), and a pressure-controlled valve (40) that is located on a secondary side and acts upona flow of process water through a secondary side (3) of the heat exchanger (1). The valve (20) located on the primary side can be actuated by the valve (40) located on the secondary side. In order tosimplify the production of such a valve assembly, the valve (40) that is located on the secondary side is provided with an adjustable neutral opening (44).
Owner:DANFOSS AS

A limit device for limiting the overturning angle of matching agricultural implements

The invention discloses a limiting device for limiting the overturning angle of matching agricultural machinery, which comprises a connecting U-shaped plate, a limiting bracket, a limiting rod, a lower suspension connecting rod, a spring box, a rake knife, a counterweight groove, and a limiting rake frame, upper suspension link, connecting frame, connecting hinge, spring, rear spring hanging shaft, front spring hanging shaft. The connecting U-shaped plate and the rake frame are connected through a space four-link, which can generate relative movement. The rake knife and the limit rake frame are rigidly connected by bolts, and the reaction given by the spring is transmitted to the ground. The spring box is just connected to both sides of the limit rake frame, through vibration absorption including the kinetic energy generated by the relative movement between the U-shaped plate and the limit rake frame. The limit rod and the limit rake frame are connected by bearings, and the two sides are respectively inserted into the limit holes of the limit bracket to limit the range of relative swing angles. It has strong practicability and high environmental adaptability, and can effectively reduce the overturning angle of supporting agricultural machinery. .
Owner:BEIJING UNIV OF TECH

Probing type seedling taking device and one-way feeding seedling taking method

The invention discloses a probing type seedling taking device and a one-way feeding seedling taking method, and relates to the technical field of crop pot seedling transplanting. The probing type seedling taking device comprises a driving mechanism and a seedling taking arm; the driving mechanism is used for driving the seedling taking arm to perform corresponding seedling taking action and seedling placing action; the seedling taking arm comprises a support, a sliding block, a seedling taking device and a seedling pushing device, the support is fixedly connected to a non-circular planet wheel in the driving mechanism, the sliding block is hinged to the support, the seedling taking device and the seedling pushing device are in transmission connection with the driving mechanism through a crank and a connecting rod, the crank is fixedly connected to a planet carrier, one end of the connecting rod is hinged to the crank, and the other end of the connecting rod is hinged on a seedling pushing rod. According to the one-way feeding seedling taking method based on the probing type seedling taking device, efficient and low-damage seedling taking of plug seedlings is achieved, only one-way seedling supply feeding is needed, the structure of a seedling supply system is simplified, and the integrity of a seedling pot matrix is guaranteed.
Owner:JIANGSU UNIV

A control arm assembly

The invention relates to a control arm assembly, which is applied to an independent suspension structure of a vehicle, which includes two V-shaped connecting arms and three ball joint structures respectively arranged at the ends of the two connecting arms , each of the two connecting arms has one end connected to the first spherical joint structure among the three spherical joint structures, and the other ends of the two connecting arms are respectively connected to the three spherical joint structures The second spherical joint structure and the third spherical joint structure in the structure, the first spherical joint structure is used to connect the axle wheel steering knuckle of the vehicle, and the second spherical joint structure and the third spherical joint structure are used for for connecting to the frame of the vehicle. The present invention can avoid as far as possible the movement interference between the tire jumping up and down and the tire steering process with the suspension and the frame, and can adopt a longer control arm structure to reduce the swing angle of the control arm when the tire jumps, and reduce the optimization difficulty and improve the force condition of the control arm.
Owner:XUZHOU HEAVY MASCH CO LTD

Inhaul cable structure for clutch control of mechanical automatic transmission

The invention discloses an inhaul cable structure for clutch control of a mechanical automatic transmission. The inhaul cable structure comprises an inhaul cable steel wire, an inhaul cable lead screw and a shift fork groove, wherein the inhaul cable lead screw is connected with one end of the inhaul cable steel wire and is fixed through a locking mechanism arranged outside the inhaul cable lead screw in a sleeving mode, and the inhaul cable steel wire is installed in the shift fork groove through a notch of the shift fork groove. The inhaul cable structure further comprises a limiting mechanism used for limiting the locking mechanism to rotate in the shifting fork groove. An existing inhaul cable structure is replaced by adding a limiting boss through an inhaul cable locking nut, the swinging angle of the inhaul cable can be controlled within a certain range, jamming of the locking nut during movement in the transmission shifting fork groove is avoided, the length of the inhaul cable is increased, and the swinging angle during movement is reduced.
Owner:CHERY COMML VEHICLE ANHUI
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