CN203116845U

CN203116845U - Vibration monitoring alarm of practice workshop machine tool

Info

Publication number: CN203116845U
Application number: CN 201320005025
Authority: CN
Inventors: 夏载军; 匡瑛亚; 陈建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-07
Filing date: 2013-01-07
Publication date: 2013-08-07
Anticipated expiration: 2023-01-07

Abstract

The utility model relates to a vibration monitoring alarm of a practice workshop machine tool. The monitoring alarm comprises a monitor, an alarm lamp and a sensor, wherein the monitor comprises a shell, a front panel, a channel mainboard and a rear panel, the front panel and the rear panel are located at the front and the rear of the shell respectively, and the channel mainboard is located in the shell; the alarm lamp and the sensor are connected with the rear panel through a circuit; the front panel is provided with a working state indicating lamp, a functional operation key, a buffer output signal socket and a liquid crystal display; the rear panel is provided with a signal connection unit and a relay connection unit; and the channel mainboard is the main electrical part of the monitor and composed of a plurality of unit analog circuits and digital circuits. The vibration monitoring alarm of the practice workshop machine tool carries out continuous real-time monitoring on rotor radial vibration of rotating machinery in a practice workshop, alarms when an abnormal circumstance occurs in the machine tool, and cuts off a power supply automatically when abnormal vibration of the machine tool is obvious so as to protect the machine tool.

Description

Practice workshop machine vibration monitoring alarm

Technical field

The utility model relates to a kind of practice workshop machine vibration monitoring alarm.

Background technology

Along with the development of modernization industry, the application of large rotating machinery is very extensive.Rotating machinery breaks down often even destroys in that daily in service because vibration is excessive, as rotor unbalance, misalign, bearing wear, rotor crack and friction etc., and the amplitude of radial vibration of rotor is as a amount the most basic weighing the rotating machinery operation conditions, it has directly reflected the distance between rotor and the bearing, and its measurement occupies an important position in condition monitoring for rotating machinery and fault diagnosis.At present in the use of practice workshop lathe, the cooperating teacher need be responsible for the normal operation of a plurality of lathes in teaching process, owing to do not have detection failure or unusual alarm, so situation that can occur attending to one thing and lose sight of another unavoidably, so expect whether can an anomaly monitoring alarm being installed at every lathe, in case the lathe operation goes wrong, the teacher can hear and report to the police and timely the processing, avoid occurring safety problem and unnecessary loss the very first time.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of practice workshop machine vibration monitoring alarm is provided, and continuous real-time monitoring is carried out in the rotor radial vibration of practice workshop inward turning favourable turn tool, occurs reporting to the police under the unusual situation at lathe.

The purpose of this utility model is achieved in that

A kind of practice workshop machine vibration monitoring alarm, comprise monitor, alarm lamp and sensor, described monitor comprises housing, front panel, passage mainboard and rear panel, and wherein front panel and rear panel lay respectively at the front and back of housing, and the passage mainboard is positioned at housing; Described alarm lamp links to each other with rear panel by circuit respectively with sensor; Front panel is provided with working station indicator (LED), feature operation button, buffer output signal socket and LCDs (LCD), signal connective element and relay connective element are arranged on the rear panel, the passage mainboard is the main electric part of monitor, is made up of several unit simulation circuit and digital circuit.

The utility model practice workshop machine vibration monitoring alarm, described monitoring alarm also comprises power self test circuit and sensor current-limiting protection circuit.

Compared with prior art, the beneficial effects of the utility model are:

The utility model practice workshop machine vibration monitoring alarm carries out continuous real-time monitoring to the rotor radial vibration of practice workshop inward turning favourable turn tool, occurs reporting to the police under the unusual situation at lathe, and cut off the electricity supply self-protection automatically when the lathe abnormal vibrations is obvious.

Description of drawings

Fig. 1 is the structural representation of the utility model practice workshop machine vibration monitoring alarm.

Fig. 2 is the structural representation of monitor among Fig. 1.

Fig. 3 is the hardware configuration synoptic diagram of Fig. 2.

Fig. 4 is the software configuration synoptic diagram of Fig. 2.

Wherein:

Monitor 1

Housing 1.1

Front panel 1.2

Passage mainboard 1.3

Rear panel 1.4

Alarm lamp 2

Sensor 3.

Embodiment

Referring to Fig. 1 and Fig. 2, the utility model practice workshop machine vibration monitoring alarm, comprise monitor 1, alarm lamp 2 and sensor 3, described monitor 1 comprises housing 1.1, front panel 1.2, passage mainboard 1.3 and rear panel 1.4, wherein front panel 1.2 and rear panel 1.4 lay respectively at the front and back of housing 1.1, and passage mainboard 1.3 is positioned at housing 1.1; Described alarm lamp 2 links to each other with rear panel 1.4 by circuit respectively with sensor 3; Front panel 1.2 is provided with working station indicator (LED), feature operation button, buffer output signal socket and LCDs (LCD), signal connective element and relay connective element are arranged on the rear panel 1.4, passage mainboard 1.3 is the main electric part of monitor, is made up of several unit simulation circuit and digital circuit.

Fig. 3 is the hardware configuration synoptic diagram of monitor, described practice workshop machine vibration monitoring alarm is to be the binary channels intelligent surveillance instrument of core with high-performance single-chip microcomputer MC68HC11 system, it accepts two independently next signals of current vortex sensor (sensors A and sensor B) by rear panel 1.4, three branches are arranged, that is: behind the admission passage mainboard 1.3

(1) independently be sent to the coaxial socket of front panel 1.2 respective channel and the terminal interface of rear panel 1.4 respectively behind the sensor passage signal buffer circuit through two, this can make the user receive sensor 3 signals on the instrument of fault diagnosis or predictive maintenance comparatively easily in the pulpit;

(2) after corresponding channel levels adjustment and peak-to-peak value holding circuit converted 0-5V voltage to, the one tunnel entered sampling maintenance and the analog to digital converter (A/D) in the single-chip microcomputer, carries out data sampling and processing by CPU; Another road enters the registering instrument driving circuit and converts one of three kinds of output signal modes to;

(3) after corresponding sensor OK circuit becomes 0-5V voltage with the sensor gap voltage transitions, enter among Chip Microcomputer A/D, compare with reference value, whether normal to judge each channel sensor and line thereof; If it is undesired to find, then in time corresponding failure code is presented on the LCD of front panel 1.2.

Practice workshop machine vibration monitoring alarm has also designed power self test circuit and sensor current-limiting protection circuit.Wherein the power self test circuit is respectively organized power supply inspection by self-diagnostic program to what monitor was used; The sensor current-limiting protection circuit can make load current unlikely too big, thereby avoids because sensor 3 breaks down or its on line has influence on the operate as normal of other sensor passage and monitor in the framework when being short-circuited.

Fig. 4 is the software configuration synoptic diagram of monitor, the The software modularized program method for designing of monitor, whole watchdog routine is made up of self diagnosis module, data acquisition module, data processing module, alarm control module, man-machine conversation module and serial communication module etc., and by master routine and real-time interrupt service routine they organically is bound up.Master routine is the cycle with several real-time interrupt, mainly finish reset, function such as data processing, data output, demonstration, warning, self diagnosis and serial communication.In cycle, finish repeatedly A/D data sampling in each real-time interrupt, and according to key-press status and each switching value state to carry out corresponding function.

Claims

1. practice workshop machine vibration monitoring alarm, it is characterized in that: described monitoring alarm comprises monitor (1), alarm lamp (2) and sensor (3), described monitor (1) comprises housing (1.1), front panel (1.2), passage mainboard (1.3) and rear panel (1.4), wherein front panel (1.2) and rear panel (1.4) lay respectively at the front and back of housing (1.1), and passage mainboard (1.3) is positioned at housing (1.1); Described alarm lamp (2) links to each other with rear panel (1.4) by circuit respectively with sensor (3); Front panel (1.2) is provided with working station indicator (LED), feature operation button, buffer output signal socket and LCDs (LCD), signal connective element and relay connective element are arranged on the rear panel (1.4), passage mainboard (1.3) is the main electric part of monitor, is made up of several unit simulation circuit and digital circuit.

2. a kind of practice according to claim 1 workshop machine vibration monitoring alarm, it is characterized in that: described monitoring alarm also comprises power self test circuit and sensor current-limiting protection circuit.