CN202492864U - Drive control system of prefabricated pile experimental centrifuge - Google Patents

Abstract

The utility model discloses a drive control system for a prefabricated pile experimental centrifuge, which is characterized in that it includes a speed sensor, a programmable logic controller, a frequency converter and a man-machine interface, the speed sensor is installed outside the pipe mold of the centrifuge, and the speed The signal of the sensor is received by the input terminal of the programmable logic controller, the human-machine interface host controls the programmable logic controller, the output terminal of the programmable logic controller is connected to the frequency converter, and the other end of the frequency converter is connected to the motor. The beneficial effect of the utility model is that: accurate technological requirements can be realized, parameter adjustment is convenient, and the human-machine interface is more humanized, thereby improving labor efficiency and providing guarantee for automatic production.

Description

Prefabricated Pile Experimental Centrifuge Drive Control System

technical field

The utility model relates to the technical field of concrete experimental prefabricated pile equipment, in particular to the driving control of a prestressed concrete pipe pile experimental centrifuge.

Background technique

There are many centrifugal concrete products in the construction field, such as pipe piles, poles, square piles, bamboo piles and ribbed piles. They all rotate at a high speed on a centrifuge through a centrifugal mold, so that the concrete in the mold is centrifugally moved at a high speed to make concrete products. The centrifuge process is very mature and has entered large-scale industrial production, but the experimental centrifuge is still a blank, such as the technical conditions of the centrifugal molding machine for the cement product industry (JC/T822-2003) and other national standards for the basic centrifuge process of concrete. Performance is clearly defined. In order to make prefabricated piles that meet the requirements, a lot of experiments in the early stage are required to complete. However, in the actual experiment, the speed of the experimental centrifuge will affect the experimental data due to the wear of the steel mold, the loss of voltage, and other components. Such reasons will make the experiment of the prefabricated pile unstable.

To sum up, in view of the defects of the prior art, there is a special need for a prefabricated pile experimental centrifuge drive control system to solve the above-mentioned problems.

Utility model content

The technical problem to be solved by the utility model is to overcome the problems existing in the prior art that the theoretical rotation speed does not match the actual rotation speed and the problem of inconvenient parameter adjustment, and provide a high-precision, automatic calibration prefabricated pile experimental centrifuge drive control system .

The technical problem solved by the utility model can be realized by adopting the following technical solutions:

The prefabricated pile experimental type centrifuge drive control system is characterized in that it includes a speed sensor, a programmable logic controller, a frequency converter and a man-machine interface. The speed sensor is installed outside the centrifuge pipe mold, and the signal of the speed sensor can be controlled by The input terminal of the programmable logic controller is received, the human-machine interface host controls the programmable logic controller, the output terminal of the programmable logic controller is connected to the frequency converter, and the other end of the frequency converter is connected to the motor.

In one embodiment of the present utility model, the frequency converter adopts RS-485 interface.

The beneficial effect of the utility model is that: accurate technological requirements can be realized, parameter adjustment is convenient, and the human-machine interface is more humanized, thereby improving labor efficiency and providing guarantee for automatic production.

Description of drawings

Fig. 1 is a frame diagram of the control system described in the utility model.

Fig. 2 is a schematic diagram of the man-machine interface described in the present invention.

Fig. 3 is a schematic diagram of the PLC program described in the utility model.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

As shown in Fig. 1, the drive control system of the prefabricated pile experimental centrifuge described in the utility model is characterized in that it includes a speed sensor, a programmable logic controller, a frequency converter and a man-machine interface, and the speed sensor is installed in the centrifuge Outside the machine tube mold, the signal of the speed sensor is received by the input terminal of the programmable logic controller. There is a motor; the frequency converter adopts RS-485 interface.

The man-machine interface is shown in Figure 2, the man-machine interface program five parameter modification and operation interface, can modify the operating speed and time.

As shown in Figure 3, the working process of the utility model is as follows: first, the PLC reads the set speed, sends instructions to the frequency converter to drive the motor, and the speed sensor (X0, X1) detects the actual speed, if the actual speed exceeds or is lower than the theoretical speed 2%, the signal is transmitted to the PLC through the speed sensor, and the internal program of the PLC automatically corrects the motor speed in real time through the PID operation; otherwise, the PID will not work, and the program will run normally to make the motor speed within the process requirements.

The utility model relates to a concrete experimental prefabricated pile, which has the advantages of convenient parameter adjustment, controllable rotating speed and accurate experimental data. The difference between the actual speed of the pipe mold and the theoretical speed is reduced, and the stability of the product is guaranteed.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. preformed pile experiment type centrifuge driving control system; It is characterized in that comprise velocity sensor, programmable logic controller (PLC), frequency converter and man-machine interface, said velocity sensor is installed on the outside of centrifuge pipe die; The signal of velocity sensor is received by the input of programmable logic controller (PLC); The upper control programmable logic controller (PLC) of man-machine interface, the output of programmable logic controller (PLC) connects frequency converter, and the other end of frequency converter is connected with motor.

2. preformed pile experiment type centrifuge driving control system according to claim 1 is characterized in that, said frequency converter adopts the RS-485 interface.

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