38results about How to "Reduce mechanical fatigue" patented technology

A multi-gimbal configured transition protectively interfaces a mooring and communication cable to a communication ocean buoy. The transition interface contains a segmented, flexible sheath formed of a plurality of pivotally interconnected gimbal rings having mutually adjacent interior apertures through which one or more communication link members pass. Successive gimbal rings are orthogonally pivotally interconnected with one another so as to make the flexible sheath flexible in three dimensions. Upper ends of one or more communication link members are connectable with a communication cable connection fixture of the buoy. Lower ends of the communication link members are connectable to communication cable terminal connectors of a terminal end of the mooring cable.

A light modulator consists of base, insulation layer, electrode layer, movable flat plate, fixed grating, and cover. It is featured as locating flat plate in the first plane to concentrate light intensity on zero class of diffraction as on voltage and locating it in the second plane to concentrate light intensity on top class of diffraction by driving it to move vertically with voltage in order to realize various modulation for incoming beam for providing different energy distribution of diffraction light.

The invention relates to a control method for active power output of a doubly-fed wind turbine generator on an electricity limitation and wind curtailment working condition. According to the control method, a generator operating track controller is established, and an operating point transfer track optimization model with the minimum overall adjustment quantity of the rotation speed and the pitch angle of the generator as an objective function and with active balance, the stability of operating points and the like of the generator as constraint conditions is solved in real time so that an optimal transfer track of the generator can be obtained; furthermore, traditional control strategies of a variable pitch system and a rotor-side frequency converter are improved so that the active power of the generator can be adjusted and controlled along the optimal transfer track of the operating points, and an electricity limitation and wind curtailment command of a power grid dispatching department can be completed. The control method is applicable to active power control of the doubly-fed wind turbine generator on the electricity limitation and wind curtailment working condition, the wind turbine generator can accurately execute the electricity limitation and wind curtailment command of the power grid dispatching department, the overall adjustment quantity of the rotation speed and the pitch angle of the generator can be reduced in the operating process, the service life of the generator can be prolonged, and the method has important engineering application value.

The invention discloses a vertical shaft multi-state dual-blade bidirectional rotation wind driven power generation device which comprises a tower column, wherein an even number of wind wheels are arranged on the tower column; two wind wheels form a group, and a power generation module consisting of a power generator is arranged between the two wind wheels in one group; each wind wheel comprises a wind wheel hub arranged on the tower column and plurality of main blades circumferentially and uniformly arranged on the wind wheel hub through a supporting rod; in each power generation module, the wind wheel hub of one wind wheel is connected with a power generator rotor, and the wind wheel hub of the other wind wheel is connected with a power generator stator; an auxiliary blade is arranged on one side of each main blade; and the auxiliary blades are connected with wind wheel hubs through auxiliary blade angle adjustment rods. Each power generator body and each stator which are integrated rotate around each rotor along opposite directions. Therefore, the rotating speed of each power generator is high, so that the output efficiency is high, and the power generation amount of the unit volume of each wind wheel is increased.

The invention discloses a hanging rail robot slope climbing device capable of realizing small-radius turning. The hanging rail robot slope climbing device comprises a rolling wheel, a guide wheel, a slope climbing damping spring, a turning damping spring, an external framework and a guide wheel fixing support frame, wherein the rolling wheel is connected with a transmission shaft; the guide wheelis used for fixing the position of the whole device on a guide rail; the slope climbing damping spring is connected with the guide wheel fixing support frame and the external framework so as to maintain the vertical relative position of the fixed support frame and the guide rail; the turning damping spring is connected with the guide wheel fixing support frame and the external framework so as to maintain the horizontal relative position of the fixed support frame and the guide rail; the hanging rail robot slope climbing device also comprises a gear; the gear is arranged at the transmission shaft of the rolling wheel; the transmission shaft passes through the external framework. A spring turning clamping mechanism is used, so that the stability can be maintained during the turning and the linear walking of the mechanism.

A turbine airfoil includes an outer wall and a plurality of cooling passages or minicores formed in the outer wall. A web separates each adjacent pair of the minicores. In order to provide more effective, even cooling of the airfoil, a baffle inside the airfoil includes a plurality of outlets aligned with the webs. The fluid outlets direct the cooling fluid directly onto the web. The cooling fluid then flows through the minicores and out through exits in the minicores.

The invention discloses a force dispersion type cold-rolled shipment interlayer padding. A three-layer fiberboard can be used as a core material, two sides of the core material are wrapped with high-density sponges, a composite force dispersion layer is inlaid in the high-density sponge, a force transmission structure arranged on the surface of the sponge is used for pre-dispersing the received force and then transmitting the pre-dispersed force to the composite force dispersion layer, the force is dispersed layer by layer and partially counteracted by utilizing the elasticity of the force dispersion layer itself and the distribution characteristics of a spherical structure, a good cushion protection effect can be achieved on the product, meanwhile, internal optimization is carried out ona single force dispersion layer, a special-shaped net is used for enhancing the integrality of the force dispersion layer, and a special force buffering layer is arranged among force dispersing ballsforming the force dispersion layer. According to the invention, a good elastic buffering effect is kept while the requirements for bundling, winding, cushioning and protection are met, the effect of coping with instantaneous impact hardening protection is also achieved, the force dispersion strength of the force dispersion layers is improved, the reliability of product cushioning and protection isextremely high, and the interlayer padding can be recycled, and the cushioning and protection cost of exported products can be greatly reduced in the long term.

The invention discloses an electric car damping device. The electric car damping device comprises a support, a first damper is fixedly connected to the upper surface of the support, a first spring and a second spring are arranged in the first damper, a sliding block is arranged between the bottom of the first spring and the top of the second spring, a limiting block is fixedly connected to the top of the first damper, a fixed rod is fixedly connected to the middle of the limiting block, and the bottom of the fixed rod penetrates the first spring to be fixedly connected with the sliding block; and a dead bolt is arranged on the top of the fixed rod, second dampers are fixedly connected to the two ends of the bottom of the support through flanges, and each second damper is internally provided with a third spring and a fourth spring. The electric car damping device enables pressure to be shared, the pressure is decreased progressively in a stage-by-stage manner, the damping effect is better, during use, the device is more comfortable, stress of a single spring is small, generation of mechanical fatigue can be relieved, the service life of the springs is prolonged, and the damping device is simple in structure and low in cost.

The invention provides a carbon-free trolley. The problem of difficult adjusting of the deflecting direction of an existing trolley is solved. The carbon-free trolley comprises a trolley frame, a traveling mechanism, a transmission mechanism and a steering mechanism, wherein the traveling mechanism, the transmission mechanism and the steering mechanism are arranged on the trolley frame; the traveling mechanism comprises a front wheel rotatably connected with the trolley frame, rear wheels arranged on the two sides of the trolley frame, and a driving assembly used for driving the rear wheels torotate; and the transmission mechanism comprises a cycle adjusting assembly used for adjusting the transmission cycle, the transmission mechanism is connected with the rear wheels and the steering mechanism, one end of the steering mechanism is connected with the transmission mechanism, the other end of the steering mechanism is connected with the front wheel, the driving assembly drives the rearwheels to rotate so as to drive the transmission mechanism to adjust the deflecting direction of the front wheel connected with the transmission mechanism, and the cycle adjusting assembly changes the transmission cycle to change the steering cycle that the steering mechanism drives the front wheel to deflect. Through cooperation of the traveling mechanism, the transmission mechanism and the steering mechanism, the trolley operates circularly according to a double-8-shaped trajectory and according to the preset requirements, and the trajectory size of the trolley can be adjusted through the cycle adjusting assembly.

The invention provides a manufacturing and forming process of a HDPE geomembrane. A HDPE geomembrane winding device comprises a guide sliding rolling mechanism, a winding mechanism, a transmission tensioning mechanism, a bottom plate and a winding roller; the transmission tensioning mechanism is installed on the bottom plate, and the winding mechanism and the guide sliding rolling mechanism are arranged right in front of the transmission tensioning mechanism; and the winding mechanism is installed on the bottom plate, the guide sliding rolling mechanism is installed on the bottom plate in a sliding fit mode, and the winding roller is arranged between the winding mechanism and the guide sliding rolling mechanism. The manufacturing and forming process of the HDPE geomembrane solves the problems that the HDPE geomembrane needs to be collected and stored through winding after being produced and manufactured, an existing HDPE geomembrane winding device directly winds the HDPE geomembrane onwinding rollers, wrinkles are likely to be generated in the middle winding process, and the winding work efficiency and the later use quality are seriously affected by the wrinkles on the surfaces ofthe HDPE geomembranes; and in addition, only the winding rollers of the same type can be used, market requirements cannot be met, and negative effects are caused to the production efficiency.

Repeater mechanism (5), comprising:

• coupled to the pulley (38) as long as the hour part (10) exerts a traction force on the chain (40);
• uncoupled from the pulley (38) as soon as this traction force is cancelled out;

A pulley spring (38) which is interposed between the ratchet and the pulley (38).