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Travel limiting device

A limit device and travel limit technology, applied in the field of limit devices, can solve problems such as motor and other components overload damage, reliability deterioration, micro switch damage, etc., achieve reliable limit buffer function, and improve work reliability , The effect of complete system functions

Inactive Publication Date: 2011-01-26
CHINA NORTH VEHICLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, some special vehicles install corresponding mechanical limit blocks to force the system to stop at the required position in order to realize the predetermined rotation limit of pitching parts. However, a single mechanical limit may cause overload damage to motors and other components.
Some components have built-in micro-switches, which can be in-position indication, but due to insufficient protection of the micro-switches, the micro-switches are easy to cause damage when the system works under high-speed impact conditions, and the reliability deteriorates. It is difficult to meet the work and debugging requirements under complex conditions

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] The overall structural diagram of the stroke limiting device of this embodiment when it cooperates with other components is shown in Figure 1. The stroke limiting device, the rotating shaft, the motor and the reducer are all installed on the platform, and the load is fixed on the platform through the rotating shaft. For the up and down pitching movement, the motor drives the reducer to rotate and meshes with the gears on the load through the gears on the reducer. When the load rotates to a predetermined angle under the action of the motor and the reducer, it meets the spring travel shaft of the new travel limit device. When it continues to move, the spring travel shaft is compressed by external force, and under the action of its internal mechanism, it first triggers The contact of the micro switch gives an electrical signal indicating that the load is in place, and drives the motor controller to cut off the power supply of the motor. The load continues to rotate forward...

Embodiment 2

[0037] The specific structure of the stroke limiting device of this embodiment is as follows: Figure 2-6 Shown: mechanical limit implementation: the limit switch box 1 is the carrier for component installation, the rubber pad 3 is installed on the side of the limit switch box through screws 17, and the rubber material is hard rubber.

[0038]Electric limit implementation mode: the spring stroke shaft 5 and the stroke control switch 2 are the two main assemblies for implementing electric limit. The spring stroke shaft 5 is fixed through the faceplate nut 4 and the long cylindrical hole on the side of the limit switch box 1. The hollow shaft 15 can freely expand and contract in the cylindrical hole. Compatible with the internal thread on it. The central shaft 13 is placed inside the spring 14 , and the spring 14 is placed inside the hollow shaft 15 . When the central shaft 13 is compressed, it can freely slide along the inner cavity of the limit switch box 1; after the force ...

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Abstract

The invention relates to a travel limiting device, which is characterized in that: all components of the system are arranged in a limit switch box; a working face of the limit switch box is provided with rubber plates meeting the requirements on thickness and materials so as to reasonably buffer inertial impact force applied during mechanical limit; the working face of the limit switch box is inwards provided with cylindrical cavity holes serving as access ways of a spring travel shaft; the spring travel shaft comprises a spring, a hollow shaft of which an inner cavity at one end is provided with holes, two adjusting nuts and a spring guiding shaft; and in the limit switch box, the right side of the spring travel shaft is provided with a travel control switch which comprises four components, namely a substrate, a spring piece, a flange plate and a micro switch, wherein the flange plate is arranged on the spring piece; and the micro switch and the spring piece are arranged on the substrate. The device provides effective measures for electrical limit and mechanical limit, and simultaneously effectively realizes the accurate adjustment of the positions of the electrical limit and themechanical limit by adopting the travel-length mechanical structure adjustment technology.

Description

[technical field] [0001] The present invention relates to a mechanical device, in particular to a limit device. [Background technique] [0002] At present, some special vehicles install corresponding mechanical limit blocks to force the system to stop at the required position in order to realize the predetermined rotation limit of pitching parts. However, a single mechanical limit may cause overload damage to motors and other components. . Some components have built-in micro-switches, which can be in-position indication, but due to insufficient protection of the micro-switches, the micro-switches are easy to cause damage when the system works under high-speed impact conditions, and the reliability deteriorates. It is difficult to meet the work and debugging requirements under complex conditions. [Content of the invention] [0003] The object of the present invention is to aim at the above-mentioned defects existing in the prior art, and to provide a stroke limiting devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/16
Inventor 钟险峰王金梅庞晓宾
Owner CHINA NORTH VEHICLE RES INST
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