CN203339010U

CN203339010U - Proximity switch protector

Info

Publication number: CN203339010U
Application number: CN2013204195512U
Authority: CN
Inventors: 杨海峰; 王建忠
Original assignee: BEIJING GAOJING CO-GENERATION POWER PLANT OF DATANG INTERNATIONAL POWER GENERATION Co Ltd
Current assignee: BEIJING GAOJING CO-GENERATION POWER PLANT OF DATANG INTERNATIONAL POWER GENERATION Co Ltd
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2013-12-11
Anticipated expiration: 2023-07-15

Abstract

The utility model discloses a proximity switch protector. The proximity switch protector comprises main body equipment, wherein a sampling arm stretches out from the front end of the main body equipment, proximity switches are fixed on the sampling arm, contact parts matched with the proximity switches are fixed on the main body equipment by buffers, the positions of the contact parts are corresponding to the positions of the proximity switches, and gaps are formed between the contact parts and the proximity switches; the buffers are springs; and a plurality of the proximity switches are provided, and distributed in the same horizontal surface. The proximity switch protector disclosed by the utility model is capable of effectively protecting the proximity switches from being damaged by compression or collision, thus prolonging the service lives of components and saving cost.

Description

The approach switch protector

Technical field

The relevant a kind of approach switch protector of the utility model.

Background technology

Approach switch also is proximity switch; claim again static position switch; it is except can completing Stroke Control and position limitation protection; or a kind of checkout gear of non-contact type; as detecting accessory size and testing the speed etc., also can be used for the automatic linking of frequency conversion counter, variable-frequency pulse generator, level control and procedure etc.Its characteristics have reliable operation, long, low in energy consumption, multiple positioning precision of life-span is high, frequency of operation is high and adapt to severe operational environment etc.Entering factory's coal Sampling Machine arm of unloading is exactly the approach switch adopted, when the contacting metal identity distance from the just action of 5mm-8mm approach switch.

But in mechanical arm coal mining process, while running into the hard coal piece, manipulator stops descending, and main equipment continues to descend, and makes approach switch and main equipment approach, and reaches the just action of 5mm-8mm approach switch, main equipment is stopped or rising.But due to the close together of 5mm-8mm, be difficult for adjusting, may occur that main equipment, because inertia continues to descend, causes the distance between contacting metal face and approach switch too small, easily make approach switch damage by pressure.

Summary of the invention

The utility model provides a kind of approach switch protector, to solve the technical problem that in background technology, approach switch crushes easily or breaks.

For this reason; a kind of approach switch protector of the present utility model; comprise main equipment; described main equipment front end stretches out the sampling arm; approach switch is fixed on described sampling arm; the contact site matched with described approach switch is fixed on described main equipment by buffer, and the position of described contact site is corresponding with the position of described approach switch, between described contact site and approach switch, has gap.

Described approach switch protector, wherein, described buffer is spring.

Described approach switch protector, wherein, described approach switch is a plurality of, is divided in same level.

The utility model can effectively protect approach switch not damaged by pressure or break, and has extended the useful life of element, has saved cost, has reached useful technique effect.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Description of reference numerals

Main equipment-1; Sampling arm-2; Approach switch-3; Contact site-4; Hard thing-5.

Embodiment

For shape of the present utility model, structure and characteristics can be understood better, below will enumerate preferred embodiment and be elaborated by reference to the accompanying drawings.

Structure of the present utility model as shown in Figure 1, comprises main equipment 1, and main equipment 1 front end stretches out sampling arm 2.Approach switch 3 is fixed on sampling arm 2, the contact site 4 matched with described approach switch 3 is fixed on main equipment 1 by buffer, the position of described contact site 4 is corresponding with the position of approach switch 3, is separated with certain gap between between contact site 4 and approach switch 3.

This buffer can be spring.This approach switch 3 can, for a plurality of, be divided in same level.

When sampling arm 2 touches the hard thing such as hard coal piece 5, sampling arm 2 stops descending, and main equipment 1 continues to descend, when approach switch 3 detect and contact site 4 between gap be a preset value, during as 5mm-8mm, approach switch 3 actions, make main equipment 1 stop or rising.Due to factors such as the inertia of main equipment 1 and reaction time, main equipment 1 may continue the certain distance that descends.Now approach switch 3 touches contact site 4, under the effect of buffer, cushions, in order to avoid approach switch 3 is damaged by pressure or breaks.

Above is illustrative to description of the present utility model; and it is nonrestrictive; those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within the spirit limited in claim and scope, but they all will fall in protection range of the present utility model.

Claims

1. an approach switch protector; it is characterized in that; comprise main equipment; described main equipment front end stretches out the sampling arm; approach switch is fixed on described sampling arm; the contact site matched with described approach switch is fixed on described main equipment by buffer, and the position of described contact site is corresponding with the position of described approach switch, between described contact site and approach switch, has gap.

2. approach switch protector as claimed in claim 1, is characterized in that, described buffer is spring.

3. approach switch protector as claimed in claim 1, is characterized in that, described approach switch is a plurality of, is divided in same level.