39results about How to "Adjustable pitch angle" patented technology

The present invention relates to a blade (100) for a wind turbine (400). The blade (100) comprises a blade surface (101) and a pressure gauge device (102) for providing a pressure value for being used for stall detection. The pressure gauge device (102) is located at the blade surface (101) in such a manner, that a pressure of a fluid (104) that flows along the blade surface (101) is measurable by the pressure gauge device (102).

The invention discloses an intelligent transportation road condition information acquisition device, belongs to the technical field of intelligent transportation, and aims at providing an intelligent transportation road condition information acquisition device which can both swing along the road surface and adjust the pitching angle. According to the technical scheme, the intelligent transportation road condition information acquisition device comprises an installing support and a rule violation camera; the installing support comprises a base installed on a cross rod and a gear rack installed at the bottom of the rule violation camera; a support rod is hinged to the front end of the base, and the free end of the support rod is provided with a connecting ball joint which is connected with a ball joint of the rule violation camera; the back end of the base is connected with a swinging drive motor through an installing seat, a folding type installing seat is adopted as the installing seat, the tail end of an output shaft of the swinging drive motor is connected with a drive gear, and the drive gear is meshed with the gear rack. The road condition information acquisition device is suitable for intelligent transportation.

The invention discloses a dust removing method of a surface mine dumping plough. A mode that a mist-spraying dust removing method is combined with a spraying dust removing method is adopted. Accordingto the mist-spraying dust removing method, a dust removing air-assisted mist-spraying machine is mounted at the lower part of a discharging arm, and the dust removing air-assisted mist-spraying machine is mounted at the position, away from a material falling point by the 20-meter horizontal distance, of the lower part of the discharging arm. According to the spraying dust removing method, a nozzle is mounted at the head part of the discharging arm, and the nozzle is connected with a dust removing water pipeline. According to the dust removing method of the surface mine dumping plough, the mode that mist-spraying dust removing is combined with spraying dust removing is adopted and applied to a dust removing system of the surface mine dumping plough, spraying dust removing is used for discharging dust removing of the head part, the mist-spraying machine at the lower part of the discharging arm is mounted at the fixed position so as to ensure the facts that the mist-spraying distance isfixed relatively and the mist-spraying machine does not need to be moved and arranged frequently due to moving of the discharging arm, the dust removing method can play a better inhibiting effect on secondary flying dust generated after discharging of the dumping plough, and the practical effect is obvious.

Disclosed in the present invention is a conformal spherical antenna array, comprising: a radome, an antenna array, a shielding cover, a base plate and a supporting apparatus; the antenna array is mounted on the base plate, and the shielding cover is located between the antenna array and the base plate; the radome covers the antenna array, and the bottom plate is provided with an annular groove; a lower edge of the radome is inserted into the annular groove and positioned by means of a locking and positioning mechanism; the support apparatus is mounted at a bottom portion of the bottom plate; the antenna array comprises: a first layer of frame, a second layer of frame, a third layer of frame and an antenna; the first layer of frame, the second layer of frame and the third layer of frame are all in a same ellipsoidal plane, and each layer of frame has a different inclination angle; the first layer of frame and the second layer of frame are tangent to the ellipsoidal plane; a spherical tangent of the second layer of frame and the third layer of frame has a tangent angle a. The present invention enjoys the following beneficial effects: highly uniform antenna radiation, low production cost and good structural stability.

The invention discloses a car model air tunnel test support device, including a positioning support pillar of a support car model, the positioning support pillar is an extendable structure, the top end of the positioning support pillar through a joint component with at least two rotation degrees of freedom is connected with the bottom of the car model, the joint component is provided at the location close to a side skirt at the bottom of the car model. The positioning support pillar through the joint component is connected with the car model, through the joint component can adjust the elevation angle and the heel angle of a car, meanwhile the degrees of freedom of the joint component also can adapt to the internal stress of the positioning support pillar in the installation process, avoid affecting the test results, the device has the advantages of being simple in installation, convenient to adjust, broad in test scope and accurate in test structure.