CN2185432Y

CN2185432Y - Measuring recorder for pressure-fixing machine

Info

Publication number: CN2185432Y
Application number: CN 94203379
Authority: CN
Inventors: 徐印平; 张铁柱
Original assignee: XI-AN RAILWAY VEHICLE FACTORY MINISTRY OF RAILWAY
Current assignee: XI-AN RAILWAY VEHICLE FACTORY MINISTRY OF RAILWAY
Priority date: 1994-02-02
Filing date: 1994-02-02
Publication date: 1994-12-14
Anticipated expiration: 2004-02-02

Abstract

The utility model relates to a measuring and testing device, particularly a measuring and recording device used for recording the pressure change in the process of the coaxial pressure-fixing of a bearing in the manufacture and repair work of rail vehicles. The inlet end of an 8089 monolithic computer is connected with a pressure sensor and an amplifier, and the outlet of the monolithic computer is connected with a driver, an electromagnetic valve, an alarm, a displayer and a drawing instrument. The utility model has the advantages of reasonable and compact structure, strong noninterference and low cost, and the pressure change in the process of pressure-fixing can be dynamically displayed by curved lines and digital. When the requirement is not reached, an alarm is emitted and the pressure-fixing process is stopped; when the requirement is reached, the pressure curved lines in the process of the pressure-fixing can be drawn.

Description

Measuring recorder for pressure-fixing machine

The utility model belongs to a kind of measurement, proving installation, is meant rolling stock especially in manufacturing and repair work, the measurement and the pen recorder that press-fit pressure variation in the process of coaxial bearing.

In the manufacturing and repair work of rolling stock, the assembling of bearing and axle is a very crucial operation, the pressure variation that press-fits in the process is an important evidence of weighing the assembling quality, in the prior art, just observing manometric variation by the operator judges the quality that press-fits process, does not now also have a kind of the device intactly to note the whole pressure delta data that press-fits process.

The purpose of this utility model is to design a kind of and the matching used test record device of pressing machine, can intactly measure the pressure delta data that press-fits in the process of coaxial bearing and note, so that whether in time detect the assembling quality of bearing and axle qualified.

Embodiment of the present utility model is: the input port that signal source is connected to computing machine by the A/D interface, this signal source is to connect an amplifier by pressure transducer to constitute, pressure transducer is to constitute an electric bridge by four resistance strain gage R1, R2, R3, R4, and the compensating resistance Ra that on resistance strain gage R3, connects, compensating resistance Rb in parallel, the delivery outlet of computing machine can be connected with solenoid valve that connects with MC1413 driver and R203 solid-state relay and CRT monitor and four plotting apparatuss of PP40 that adopt Standard PC double frequency card connection.

The amplifier that is connected with pressure transducer is that resistance in series R5, R6 and parallel resistance R7, R8 constitute respectively by integrated circuit CA3193E.

For fear of pressing machine superpressure or under-voltage phenomenon taking place in the course of the work, and in time corrected, also can connect the alarm that a FMQ-27 type hummer constitutes on the delivery outlet of computing machine.

The advantage of this pressing machine testing recorder is: can dynamically show the variation that press-fits pressure in the process with curve and numeral, and can judge whether press-fiting of bearing meets technical requirement, if undesirable, alarm gives the alarm immediately, and may command press-fits process and returns.If wholely press-fit process and meet technical requirement fully, then will draw the pressure curve that press-fits process.Originally it is reasonable to press-fit the testing recorder compact conformation, strong anti-interference performance, and cost is low.

Description of drawings is as follows:

Fig. 1 is the structural principle block diagram of present embodiment.

Fig. 2 is the pressure transducer and the amplifier circuit figure of present embodiment.

Fig. 3 is the connection line figure of solenoid valve with driver and relay.

Among the figure: A1 is integrated circuit CA3193E;

A2 is integrated circuit MC1413;

A3, A4, A5, A6 are solid-state relay R203(～220V, 3A);

A7, A8, A9, A10 are solenoid valve MQJ-3;

A11 is a FMQ-27 type alarm;

AC1, AC2, AC3, AC4 are the power supply alternating current 220V;

R1, R2, R3, R4 are resistance strain gage, and its resistance range is 100～350 Ω;

Ra and Rb are compensating resistance, and resistance value is between 1 Ω～100 Ω;

R5, R6, R7, R8 are resistance, and its resistance value R5, R7 are 100 Ω, and R6, R8 are 1.2K.

Embodiment:

This pressing machine testing recorder is shown in Fig. 1 structured flowchart, it is to connect signal source in the input port of 8098 one-chip computers by the A/D end, connects 4 R203 solid-state relays and 4 MQJ-3 solenoid valves at the delivery outlet of this 8098 one-chip computer by driver MC1413.Delivery outlet at this 8098 single-chip microcomputer adopts Standard PC double frequency card connection CRT monitor and four plotting apparatuss of PP40.

For fear of pressing machine superpressure or under-voltage phenomenon taking place in the course of the work, and in time corrected, also can connect a FMQ-27 type alarm on the driver that the delivery outlet of 8098 single-chip microcomputers connects.

Signal source is made up of pressure transducer and amplifier, and as shown in Figure 2, pressure transducer is to constitute an electric bridge by 4 resistance strain gage R1, R2, R3 and R4, and the resistance R a resistance R b in parallel that connects on resistance strain gage R3.Amplifier is to be made of integrated circuit CA3193E and resistance R 5, R6, R7, R8, resistance R 5, R6 are connected with the electric bridge two ends of sensor respectively, and and integrated circuit CA3193E series connection, resistance R 7, R8 respectively with integrated circuit CA3193E parallel connection, constitute a proportional amplifier.

This pressing machine testing recorder, during use by keyboard to 8098 single-chip microcomputer loading routine and data, when pressure transducer transmitted pressure change signal, electric bridge was flat permanent destroyed, electric bridge induces the signal that and pressure is directly proportional and sends amplifier to.The effect of a resistance R a of series connection and a resistance R b in parallel is to be used for not having in static state depressing that to adjust bridge output voltage be zero to carry out temperature compensation on resistance strain gage R3.

After the Vo signal Processing that 8098 one-chip computers are sent amplifier here signal V1 is exported to driver MC1413, when driver export to solid-state relay A3, A4, when A5, A6 are low level, then this solid-state relay is opening state, and and solenoid valve A7, A8, A9, A10 and AC power AC1, AC2, AC3, AC4 constitute the loop, the spool that makes solenoid valve A7, A8, A9, A10 is an attracting state, otherwise the spool of solenoid valve is a closed condition.

When respective change takes place along with the oil pressure variation in the voltage signal of pressure transducer conveying, by the processing and the judgement of 8098 single-chip microcomputers, provide corresponding superpressure or under-voltage signal, when driver MC1413 provides low level, alarm FMQ-27 gets electric, sends alarm sound.If it is normal to press-fit pressure, then driver MC1413 provides high level, and the magnitude of voltage of two groups of coils of self coupling inductance L is suitable, the self coupling inductance L is inoperative and do not report to the police, the pressure that press-fits process is normal, and then 8098 one-chip computers provide signal, is stuck in by the Standard PC double frequency in the shielding of CRT monitor and demonstrates the oil pressure numerical value that press-fits process, and draw out by four plotting apparatuss of PP40, press-fit the time dependent curve of pressure of process.

Claims

1, a kind of pressing machine testing recorder, it is characterized in that: it is the input port that signal source is connected to computing machine by the A/D interface, this signal source is to connect an amplifier by pressure transducer to constitute, pressure transducer is by four resistance strain gage R1, R2, R3, R4 constitutes an electric bridge, and the compensating resistance Ra that on resistance strain gage R3, connects, compensating resistance Rb in parallel, the delivery outlet of computing machine can be connected with the solenoid valve that connects with MC1413 driver and R203 solid-state relay and with CRT monitor and four plotting apparatuss of PP40 of Standard PC double frequency card connection.

2, pressing machine testing recorder as claimed in claim 1, it is characterized in that: described amplifier is to be made of integrated circuit CA3193E and resistance R 5, R6, R7, R8, resistance R 5, R6 are connected with the electric bridge two ends of sensor respectively, and and integrated circuit CA3193E series connection, resistance R 7, R8 respectively with integrated circuit CA3193E parallel connection.

3, as claim 1 and 2 described pressing machine testers, it is characterized in that: also can connect the FMQ-27 alarm on the delivery outlet of described computing machine.