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Shielded wall-passing device for rotating shaft and shielded motor

A shaft and wall passing technology, which is applied in the direction of electromechanical devices, magnetic field/electric field shielding, electrical components, etc., can solve the problems that the metal shaft shielding can not be realized through the wall, and achieve the effect of preventing electromagnetic leakage

Active Publication Date: 2017-05-24
ANFANG HI TECH ELECTROMAGNETIC SAFETY TECHN BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a shielded wall-passing device for a rotating shaft and a shielded motor to solve the problem that the above-mentioned existing shielding device cannot shield a metal shaft from passing through a wall

Method used

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  • Shielded wall-passing device for rotating shaft and shielded motor
  • Shielded wall-passing device for rotating shaft and shielded motor
  • Shielded wall-passing device for rotating shaft and shielded motor

Examples

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, a rotating shaft shielding wall passing device in an illustrative embodiment includes: a rotating shaft 1, a ring-shaped moving block 5, and a ring-shaped fixed block 6; the ring-shaped moving block 5 is sleeved on the rotating shaft 1 , the outer side of which is provided with a comb-shaped choke groove; the ring-shaped fixed block 6, whose cross-section is comb-shaped, is buckled with the comb teeth of the choke groove to form a non-contact connection; the moving block rotates with the shaft, The comb teeth of the moving block and the comb teeth of the fixed block form an electromagnetic wave transmission attenuation loop.

[0026] Electromagnetic waves are usually transmitted along the outer wall of the rotating shaft. The comb teeth of the moving block 5 and the comb teeth of the fixed block 6 form a loop. Since the impedance of...

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PUM

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Abstract

A shield wall-penetrating device for a rotary shaft relates to the rotary shaft, an annular movable block arranged on the rotary shaft in a sleeved mode, and an annular fixed block, wherein a choke groove with a comb-shaped cross section is formed in the outer side of the movable block, the cross section of the fixed block is in the shape of comb teeth and is combined with the comb teeth of the choke groove in a buckled mode to achieve non-contact connection, the movable block rotates along with the rotary shaft, and the comb teeth of the movable block and the comb teeth of the fixed block form an electromagnetic wave transmission attenuation circuit. The invention further discloses a canned motor which can meet the requirement for 50dB shielding effectiveness.

Description

technical field [0001] The invention belongs to the field of wall shielding for rotating shafts, and in particular to a shielding wall passing device for rotating shafts and a shielded motor. Background technique [0002] Due to the antenna effect of the metal body, in order to achieve the shielding effect, it is usually required that the metal body cannot pass through the shielding body, but in actual requirements, such as power transmission, the motor is set in the shielding shell, and its transmission shaft needs to pass through the shielding of the shielding shell Wall panels, and must not leak electromagnetic radiation, so as to prevent the normal and safe operation of external equipment from being affected. Contents of the invention [0003] The object of the present invention is to provide a shielding device for passing through a wall of a rotating shaft and a shielding motor, so as to solve the problem that the above-mentioned existing shielding device cannot reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00H02K5/04
Inventor 吕致恒房非拉雒玉旺于天荣郭林
Owner ANFANG HI TECH ELECTROMAGNETIC SAFETY TECHN BEIJING