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Tooth collision prevention mechanism of relay driving fuel transfer device

A technology of fuel transfer device and driving gear, applied in the direction of transmission device, transmission device parts, friction transmission device, etc., can solve the problems of shortage and long transportation path, and achieve the effect of reducing impact, easy processing and installation, and reliable mechanism structure. Effect

Active Publication Date: 2013-04-03
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The double-containment design of the third-generation nuclear power plant leads to a longer transportation path for the fuel assembly operated by the fuel transfer device during the reactor loading and unloading operation, and the original reactor type design cannot meet the new demand
[0005] Lack of a special mechanism to offset or reduce the adverse effects of rack and pinion impact on transmission parts

Method used

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  • Tooth collision prevention mechanism of relay driving fuel transfer device

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Embodiment

[0018] Such as figure 1 As shown, the anti-collision gear mechanism of the relay-driven fuel transfer device provided by the present invention includes four main parts. The ram 2 is connected to the rack on the transport trolley of the relay-driven fuel transfer device through the pin 4 arranged at one end of the ram 2 and the spring 3 arranged on the upper part of the ram 2, and the ram 2 can use the pin 4 as the rotation axis Rotate, the pin shaft 4 is used to limit the trajectory of the striker 2. The front lower end of the bumper 2 is provided with a roller 1, and the roller 1 is in contact with the relay drive gear to change the friction in the relay drive process from sliding friction to rolling friction.

[0019] When the relay drive starts, the roller 1 which is arranged at the lower end of the bumper 2 contacts with the relay drive gear. Due to the existence of the initial velocity, the contact force makes the striker 2 rotate around the pin 4 .

[0020] The upper ...

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Abstract

The invention relates to the field of transportation of a nuclear fuel assembly, in particular to a tooth collision prevention mechanism of a relay driving fuel transfer device. The tooth collision prevention mechanism of the relay driving fuel transfer device structurally comprises a collision head, wherein the collision head is arranged on a rack; one end of the collision head is actively connected with the rack and further can rotate along a connection point; a spring for absorbing the collision force of connection between a relay driving gear and the rack and further enabling the collision head to return is arranged between the upper part of the collision head and the rack; and the lower end of the front part of the collision head contacts with the driving gear. The tooth collision prevention mechanism causes rigid collision during the process of contact between the gear and the rack to be changed into flexible collision, so that a transmission mechanism is protected; and in addition, the structure is simple, the reliability is high and the processing, the manufacturing and the installation are easy.

Description

technical field [0001] The invention relates to the field of nuclear fuel assembly transportation, in particular to an anti-collision tooth mechanism of a relay-driven fuel transfer device. Background technique [0002] The double-containment design of the third-generation nuclear power plant leads to a longer transportation path for the fuel assembly operated by the fuel transfer device during the reactor loading and unloading operation, and the original reactor type design cannot meet the new demand. Combined with the design concept of the relay-driven fuel transfer device, during the rack-and-pinion relay drive process, the transmission mechanism may not be able to transmit due to the fact that the centerline of a single tooth of the gear and the centerline of a single tooth of the rack are collinear, resulting in the mechanism "stuck". dead", the transmission chain fails. In the normal relay driving process, the phenomenon of "stuck" occurs, and the contact process betw...

Claims

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Application Information

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IPC IPC(8): F16H57/028F16H19/04
Inventor 李建奇孙福江吴明金青谢亮唐兴贵张鑫李钧王燕刘慧芳杨仲元缪岭欧阳立华
Owner CHINA NUCLEAR POWER ENG CO LTD
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