228results about How to "Control rotation angle" patented technology

The invention discloses a full-angle shooting pan-tilt. The full-angle shooting pan-tilt mainly resolves the problem that a full-angle shooting pan-tilt of the prior art is large in size, can be used for shooting by matching with a single lens reflex camera, and various electronic parts are used. The full-angle shooting pan-tilt is applied to an intelligent mobile phone, a general small-size digital camera, and a mobile phone with a photographing function. The full-angle shooting pan-tilt comprises a base, a rotary platform, and a bearing sleeve part, wherein the rotary platform is arranged on the base and can rotate on the base, the bearing sleeve part is arranged on the rotary platform and is used for bearing a shooting unit, and when the rotary platform rotates, the shooting unit is connected with the rotary platform. According to the structure, the full-angle shooting pan-tilt can be applied to pan-shot of 360 degrees, with 90-degree elevation, and with 90-degree depression in various sites.

The invention relates to the technical field of unmanned aerial vehicle based dropping equipment, and in particular to an unmanned aerial vehicle based continuous dropping device and a controller. The device comprises an upper clamping plate and a lower clamping plate. A plurality of through holes are formed in the lower clamping plate. A plurality of storage containers are disposed between the upper clamping plate and the lower clamping plate. An opening is formed in a bottom end of each storage container, and all the openings are opposed to the through holes. A rotating plate is disposed at one side, far away from the upper clamping plate, of the lower clamping plate, and a leaking hole is formed in the rotating plate. The rotating plate is connected to a driving device. The driving device comprises a steering engine that is connected to a rotating shaft. The rotating shaft is connected to the rotating plate. The unmanned aerial vehicle based continuous dropping device and the controller provided by the present invention may achieve continuous dropping by controlling the rotation of the rotating plate with the steering engine; articles for dropping are loaded in the storage containers; and the rotation angle of the steering engine may be accurately controlled by means of a PWM wave duty ratio.

The invention discloses a plate shearing machine. The plate shearing machine comprises a machine frame and a sliding block which is arranged on the machine frame through a linear guide track pair, wherein a lower shear and an upper shear are fixed on the machine frame and the sliding block respectively; nuts and screw rods are arranged above the sliding block; the top parts of the screw rods are provided with bevel gear steering boxes; and the bevel gear sheering boxes are connected with one another through coupling shafts and are driven by a same servo motor. The servo motor can synchronously drive each bevel gear steering box to rotate through the coupling shafts, and the bevel gear steering boxes drive each screw rod to rotate synchronously to ensure that the whole sliding block can move up and down synchronously. The sliding block carries the upper shear to move to realize the shearing of a workpiece. Because the rotational angle of the servo motor can be accurately controlled, the rotational angle of the screw rods can be accurately controlled, and the distance for the sliding block to move up and down can be accurately controlled. By controlling the distance for the sliding block to move up and down, the shearing stroke of the plate shearing machine is controlled. Therefore, the shearing stroke of the plate shearing machine can be accurately controlled, and the middle part of a plate can be sheared.

The invention discloses a foldable guardrail device which is arranged at the top of a tank body of a powder tanker and comprises a guardrail beam and at least one guardrail oscillating bar; one end of the guardrail oscillating bar is rotationally arranged at the top of the tank body; the other end of the guardrail oscillating bar is rotationally coupled to the guardrail beam, and the guardrail oscillating bar drives the guardrail beam to ascend or descend by rotation. The invention also discloses the powder tanker. By adopting the technical scheme, the linkage of a staircase and a guardrail can be achieved; the guardrail can ascend or descend as required; the use security of the guardrail is improved; a space is saved; the staircase can be folded, and the problem of limited mounting space of the staircase is solved.

The invention, which relates to the technical field of icing wind tunnel pressure measurement, discloses a pressure measuring device for preventing a probe from icing through a rotary rake. The pressure measuring device comprises a pressure measuring rake with a pressure measuring probe. The pressure measuring rake has a hollow paddle-shaped structure with a hollow shaft; and the hollow structureof the pressure measuring rake is communicated with the cavity of the hollow shaft. In addition, the device also incudes a driving positioning device mounted on the outer surface of an air inlet channel; and a rotating shaft of the driving positioning device is in driving connection with the hollow shaft of the pressure measuring rake. According to the invention, when an air inlet channel icing test is carried out, a pressure measuring rake is rotated by the driving positioning device to enable the pressure measuring probe to be against an incoming flow direction with the back and positioningis performed, so that the pressure measuring probe is protected from being iced and the rotating angle of the pressure measuring rake is not influenced by the air flow; when the air inlet channel pressure measurement test is carried out, the pressure measuring probe faces the incoming flow direction directly to measure the pressure and the distribution, so that multi-times mounting and dismountingof the pressure measurement rake and related parts are avoided and thus the damage to the air inlet channel caused by repeated mounting and dismounting is reduced. The working time of the related personnel in a low-temperature environment is shortened and the test efficiency is improved.

The invention discloses a test tube uncapping machine and an uncapping method thereof. The test tube uncapping machine comprises a rotary disc device, a clamping device, a lifting device and an uncapping device; the rotary disc device comprises a rotary disc and a plurality of test tube seats, and the test tube seats are arranged on the rotary disc; the clamping device comprises an elastic block and a lead screw module, and the elastic block is fixed to a movable assembly of the lead screw module; the uncapping device comprises a clamping mechanism and a rotating mechanism, wherein the clamping mechanism is arranged on the rotating mechanism, and the rotating mechanism is used for driving the clamping mechanism to rotate; and the axis of the rotary disc is parallel to the length directionof the test tube, the elastic block is used for fixing the test tube to the test tube seat, the clamping mechanism is located at the end, provided with the end cap, of each test tube, the clamping mechanism is used for clamping the end cap of the test tube, and the uncapping device is arranged on the lifting device.

The invention provides a rotating shaft and electronic equipment. The rotating shaft comprises a first rotating surface and a second rotating surface, the first rotating surface and the second rotating surface have a common side, the rotating axis of the first rotating surface and the rotating axis of the second rotating surface are on the same side but are not superposed, the first rotating surface is provided with a first stop portion, and the second rotating surface is provided with a second stop portion; the rotating shaft further comprises a supporting surface, the supporting surface is disposed on the same side as the rotating axes of the two rotating surfaces, the supporting surface is concave toward the two rotating surfaces, and the two sides of the supporting surface are respectively provided with a third stop portion and a fourth stop portion. The two rotating surfaces and the supporting surface are respectively provided with stop portions, and rotating components can be positioned by the respective corresponding stop portions when rotating through the rotating shaft, so that the rotating angles of the rotating components can be well controlled.

The invention discloses a fully automatic retractable rotatable camera. The fully automatic retractable rotatable camera head includes: a connection assembly, a transmission mechanism and a power motor connected in sequence, and the connection assembly is connected to the camera head; the power motor has opposite first and second running directions; In the running direction, the power motor drives the camera to extend out of the accommodating space and controls the rotation angle of the camera through the transmission mechanism; in the second running direction, the power motor drives the camera to retract through the transmission mechanism the accommodating space. The fully automatic retractable rotatable camera provided by the present invention can be controlled by a terminal device, so that the state conversion of the camera can be realized fully automatically, and the operation is very convenient.

The invention relates to a C type arm of a C-arm X-ray machine. The C-arm X-ray machine comprises a main frame and the C type arm which are connected with each other through a shaft, wherein the C type arm can make rotary motion relative to the main frame through the shaft, the C type arm comprises an arm body, a drive device, a digital display device, a single chip microcomputer, a synchronous pulley and a rotary encoder, the drive device comprises a stepping motor for providing electricity and a meshing gear for transmitting power, the single chip microcomputer is connected with the digital display device, the stepping motor and the rotary encoder respectively, the stepping motor, the synchronous pulley and the arm body are connected in sequence, the rotary encoder is arranged on the arm body, and the rotary encoder and the arm body are in gear drive. The C type arm has the beneficial effects that the rotation angle of the C type arm can be accurately controlled, the noise is small, the structure is simple, the use is convenient, and the performance is stable.