Heavy-load cradle head

Abstract

The invention relates to a heavy-load cradle head which comprises a base, a deck mechanism, a shell, a protective cover and a transmission mechanism, wherein end plates at two sides are respectively provided with a gravity compensation part, and the gravity compensation parts and a protective cover connecting plate are respectively arranged at two sides of a fixing position of a vertical transmission shaft and the end plates. In the invention, the moments generated by the gravity compensation parts can be equal to the moments generated by a camera and the protective cover connecting plate through changing the weight of the gravity compensation parts so as to ensure that the whole gravity center of the protective cover structure connected with the camera falls into the center of a horizontal transmission shaft, i.e. the bearing center of the whole cradle head; and when the camera rotates in the vertical direction, because the camera and the protective cover rotate in a gravitational equilibrium state, the camera can stably finish angle conversion in the vertical direction so as to ensure that the shooting picture of the camera is more stable.

Description

technical field [0001] The present invention relates to the technical field of video cameras, specifically, a gravity compensation part is arranged on the end plates on both sides, and the center of gravity of the camera is kept stable during operation by changing the weight of the gravity compensation part, so that the vertical direction of the camera is Smooth-running heavy-duty head. Background technique [0002] The PTZ is a camera installation platform composed of two AC motors, which can drive the camera to move horizontally and vertically. There are two motors inside the gimbal, which are responsible for the up and down and left and right rotations of the gimbal respectively. The difference in working voltage also determines the overall working voltage of the gimbal, generally there are AC 24V, AC 220V and DC 24V. When receiving the up and down action voltage, the vertical motor rotates and drives the vertical transmission wheel to rotate through the reduction box; ...

AI Technical Summary

Problems solved by technology

[0009] In the actual use of the prior art heavy-duty pan / tilt combined with the camera, due to the heavy weight of the camera and the shield, the gravity distribution at the structure position of the shield is unbalanced, and its center of gravity deviates from the horizontal rotation of the movement The center, that is, deviates from the load measurement position of the heavy-duty head, so that the camera installation is not stable enough. When the camera starts to work in the vertical direction, the motor in the movement must first overcome the huge torque caused by the gravity of the camera. Due to the influence of inertia, the camera will produce an unstable working state when it is running or stopping, and this instability is particularly prominent when the camera is running at high speed and at a magnification.

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