A screw nut transmission mechanism, a self-adjusting telescopic mechanism and a photographic mechanical arm

A technology of screw nut and telescopic mechanism, which is applied in the field of screw nut transmission mechanism, self-adjusting telescopic mechanism and photographic mechanical arm, which can solve problems such as inconvenience, and achieve the effects of increasing the maximum length, driving force output balance, and increasing the variable length

Active Publication Date: 2020-08-04
BEIJING FILM ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the above-mentioned existing photographic mechanical arm obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

Method used

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  • A screw nut transmission mechanism, a self-adjusting telescopic mechanism and a photographic mechanical arm
  • A screw nut transmission mechanism, a self-adjusting telescopic mechanism and a photographic mechanical arm
  • A screw nut transmission mechanism, a self-adjusting telescopic mechanism and a photographic mechanical arm

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Experimental program
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Embodiment Construction

[0039] Such as figure 1 , 2 As shown, the lead screw nut transmission mechanism includes a lead screw 106 and a lead screw nut 107 , and also includes a lead screw nut covering member that is sleeved on the lead screw 106 and covers the installation end of the lead screw nut 107 . Wherein, the mounting end of the screw nut refers to a plate-shaped structure with an extension on one side of the normal screw nut, which belongs to the connection part directly fixedly connected with the driven part.

[0040]The above-mentioned lead screw nut covering part includes a fixed plate 109 and a rectangular covering cavity 108; the lead screw nut 107 is threadedly connected to the lead screw 106, and the mounting end of the lead screw nut is clamped in the covering cavity 108, Specifically, the mounting end of the lead screw nut is preferably in a rectangular structure, and the upper and lower sides of the mounting end are respectively attached to the upper and lower sides of the coating...

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Abstract

The invention discloses a lead screw nut transmission mechanism, which comprises a lead screw and a lead screw nut, and also includes a lead screw nut covering part which is set on the lead screw and covers the installation end of the lead screw nut; the lead screw nut covering part There is a fixed part for fixed connection with the driven part; the installation end of the screw nut can move along the non-axial direction inside the screw nut covering part, and the screw nut is coated but not fixed by the method of covering but not fixing the screw nut. The installation accuracy is low, and the transmission is stable; the invention also discloses a self-adjusting telescopic mechanism containing the above-mentioned screw nut transmission mechanism. The self-adjusting telescopic mechanism is provided with a double pulley block, which can realize Rapid and large expansion and contraction; the invention also discloses a photographic mechanical arm containing the self-adjusting expansion and contraction mechanism, which occupies a small space, has a light weight, stable transmission and strong expansion and contraction ability, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of photographic mechanical arms, in particular to a screw nut transmission mechanism, a self-adjusting telescopic mechanism and a photographic mechanical arm. Background technique [0002] The film industry has always evolved with the latest technology. Camera motion control technology is one of the key technologies of digital special effects. The free movement of the camera in a large space is more in line with the on-site needs of film and television shooting. [0003] The currently existing camera motion control systems are General Lift.s Mk Genu Flex in the United States, MILO and BOLT of MRMC in the United Kingdom, and OTHKA in China. In the camera motion control system, the maximum height that the camera can reach is not only related to the pitch mechanism, but also related to the telescopic ability of the pitch arm. General Lift.s MkGenu Flex is bulky, and it is a fixed pitching arm. The pitching arm has no ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H25/22F16M11/28F16M11/04G03B17/56
Inventor 贺京杰汪苏
Owner BEIJING FILM ACAD
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