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A pull cord switch for field work

A technology for pull rope switches and field operations, which is applied in the direction of electric switches, electrical components, circuits, etc., and can solve problems such as large force, heavy pull rope weight, and long pull rope

Active Publication Date: 2017-02-15
WUHAN FISCHER CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the belt conveyor is very long, the pull rope of the pull rope switch is also longer, the weight of the pull rope is also heavy, and the operator exerts a relatively large force when pulling the rope, all of which have a certain impact on the service life of the spring in the pull rope switch , or even directly lead to the damage of the spring

Method used

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  • A pull cord switch for field work
  • A pull cord switch for field work
  • A pull cord switch for field work

Examples

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Embodiment Construction

[0014] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0015] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0016] In the present invention, unless otherwise clearly specified...

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Abstract

The invention provides a field operation pull-cord switch which comprises a sealing shell and a circuit control switch. The circuit control switch is arranged inside the sealing shell. A bearing pedestal is arranged inside the sealing shell. A bearing is arranged inside the bearing pedestal. The field operation pull-cord switch further comprises a swing arm and a swing arm shaft. The swing arm is fixed to the swing arm shaft. The swing arm shaft is installed on the bearing. A pull cord is further arranged on the swing arm. The field operation pull-cord switch further comprises a triggering device triggering the circuit control switch to act. The triggering device is fixedly arranged on the swing arm shaft. The field operation pull-cord switch further comprises a positioning device limiting the motion range of the triggering device. A reset spring 7 is further arranged on the swing arm shaft. The circuit switch and the other components are sealed inside the shell, the internal working environment of the pull-cord switch is improved, and the bearing is arranged on the swing arm shaft, so that the field operation pull-cord switch is conveniently and reliably operated.

Description

technical field [0001] The invention relates to a pull rope switch for field work. Background technique [0002] When the belt conveyor in the mine transports materials, it is often necessary to stop the belt conveyor immediately in case of emergency to avoid danger and reduce the risk of personal injury or machine damage and production accidents. Therefore, it is necessary to arrange operators to patrol and inspect along the conveyor at the operation site, and shut down the belt conveyor immediately when any accident or phenomenon is found. Due to the harsh environment in the field, a two-way pull rope switch is generally used to cut off the power supply of the belt conveyor. The two-way pull rope switch is installed on both sides of the conveyor, and a rope connected to the two-way pull rope switch is installed along the belt conveyor. Because the belt conveyor is very long, the pull rope of the pull rope switch is also longer, the weight of the pull rope is also heavy, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H17/02H01H17/26
CPCH01H17/02H01H17/26
Inventor 闫海涛
Owner WUHAN FISCHER CONTROL TECH