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A working method of a worm drive mechanism with a keyway on the inner edge of the worm gear

A technology of worm drive and working method, which is applied in the direction of gear transmission, transmission, mechanical equipment, etc., can solve the problems that the worm and the worm wheel cannot be clutched and cannot interfere with each other, and achieve the effect of simple structure and ingenious conception

Active Publication Date: 2018-12-04
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Underwater robots generally can only provide one form of motion, that is, rotational motion, and cannot make the worm and worm gear clutch. According to the current structure, the two driving forms will not interfere with each other.

Method used

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  • A working method of a worm drive mechanism with a keyway on the inner edge of the worm gear
  • A working method of a worm drive mechanism with a keyway on the inner edge of the worm gear
  • A working method of a worm drive mechanism with a keyway on the inner edge of the worm gear

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples.

[0014] Such as figure 1 As shown, the first embodiment provides a worm transmission mechanism with a keyway on the inner edge of the worm wheel, wherein the valve rod 3 is fixedly connected with the flat key 4 and rotates together. The inner edge of the worm wheel 2 is provided with a quarter-circumference long keyway, and the flat key 4 is located in the keyway. The valve stem 3 and the worm wheel 2 are clearance fit and do not contact each other.

[0015] Such as figure 2 Shown is the overall structure diagram of the underwater valve actuator. The right side is the hydraulic device, including hydraulic cylinder 14 and piston 15; the left side is the spring device, including spring cylinder 5, spring 6, push plate 7; the middle is the transmission device, including housing 16, piston rod 9, guide rod 8, Guide block 11, pin shaft 12, sh...

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Abstract

The invention relates to the field of underwater and ground valve execution mechanisms and provides a worm transmission mechanism with a key groove formed in the inner edge of a worm wheel. The transmission mechanism is composed of a worm, the worm wheel, a valve rod and a flat key, wherein the flay key is fixedly arranged on the valve rod; the key groove of a quarter of circumference is formed in the inner edge of the worm wheel; the flat key is arranged in the key groove; part of worm wheel teeth are arranged on the outer edge of the worm wheel; the arc length of the worm wheel teeth is L, L is a quarter of the circumference of the outer edge of the worm wheel or a half of the circumference of the outer edge of the worm wheel, and the worm wheel teeth are engaged with the worm. The transmission mechanism can effectively achieve noninterference of ordinary driving and underwater robot driving.

Description

technical field [0001] The invention relates to the field of underwater and land valve actuators, in particular to a working method of a worm transmission mechanism with a keyway on the inner edge of a worm wheel. Background technique [0002] The worm drive is an important part of the underwater valve actuator, which is mainly used to convert the high speed and low torque of the underwater robot into the low speed and high torque for opening the valve. The driving of underwater robots is a supplementary form of conventional driving. It will only be activated when the pressure source fails. In land or shallow sea areas, manual devices can be used to switch between the two different driving methods. As the development of offshore oil and gas fields gradually enters the deep sea, it will become more and more difficult for divers to dive into the deep sea to manually disengage and switch valves in emergency situations. Remote control of underwater robots to switch valves will b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H1/16
CPCF16H1/16
Inventor 廖聪姜勇向超毋迪李慧
Owner NO 719 RES INST CHINA SHIPBUILDING IND