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

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.

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.

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.

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).

A sheet stacking apparatus includes a base member, a sheet stacking portion on which sheets are stacked, and a biasing portion configured to bias the sheet stacking portion.

The sheet stacking portion is swingably supported by the base member, and the biasing portion biases the sheet stacking portion such that a swing angle is reduced.

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.

The invention discloses an erecting device and an erecting method. The erecting device comprises a carrier, a launcher arranged on the carrier and an erecting cylinder connected with the launcher, the launcher is hinged to the carrier, the erecting device further comprises a power-assisted cylinder arranged on the carrier, the power-assisted cylinder is located below the launcher, one end of the erecting cylinder is hinged to a free end of the power-assisted cylinder, and the other end of the erecting cylinder is hinged to the launcher. According to the erecting device, the erecting cylinder and the power-assisted cylinder are used in a dual-drive matched mode, stable conversion of a front-mounted direct-push type and a rear-mounted direct-push type of an erecting structure can be achieved, and the erecting device has the advantages of being high in response speed, short in work period, small in piston stroke, small in tilt angle of the inclined erecting cylinder, and small in system pressure and driving force, and the system stably realizes rapid erection and fall-back of the launcher.

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.