Speed measurement control device of belt conveyor

Abstract

The utility model provides a belt conveyor speed measurement control device, which belongs to the technical field of cement production belt conveyors, and comprises a speed measurement mechanism, the speed measurement mechanism is arranged at the position of a head roller of a belt conveyor, and the speed measurement mechanism comprises a support and a rotating speed sensor which is arranged on the support and is used for measuring the rotating speed of the belt conveyor; the monitoring instrument is electrically connected with the speed measurement sensor; the control system comprises a rotating speed control module, and the rotating speed control module is electrically connected with the monitoring instrument; the speed measurement control device for the belt conveyor is additionally arranged on the field of the belt conveyor, the actual running speed of the motor is monitored in real time, and when the actual rotating speed is detected to be overspeed, a fault shutdown command is immediately sent to the rotating speed control module, so that the functions of immediate shutdown and braking are realized, and the safety of the belt conveyor is ensured. And the system forms effective speed closed-loop control.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement production belt conveyor technical field, concretely relates to a belt conveyor speed control device. BACKGROUND

[0002] Belt conveyor has the advantages such as long transportation distance, large conveying capacity, high transportation speed, small power consumption, reliable operation and easy automatic control, is widely used in cement production industry, and can be said that the belt conveyor is the lifeline of cement production. Since part of the belt involves transporting limestone to the yard, the phenomenon of belt downhill occurs in the conveying process, and due to the large downhill angle of the belt, the inertia is too large when heavy load runs, especially when the equipment fails to stop and suddenly stops, it cannot be effectively and timely braked, resulting in "flyer" failure of the belt, which poses a great risk to equipment and personal safety. It also troubles more and more users, so it is necessary to develop a belt conveyor speed control device that can effectively protect the belt and personal safety and has low cost to prevent "flyer" failure. SUMMARY

[0003] The utility model provides a kind of belt conveyor speed control device, increase this intelligent speed control device, realize speed closed loop control, can further improve the reliability of control system, when detecting that actual speed appears overspeed phenomenon, immediately issue fault stop command to control system, to realize immediate stop and brake function, so that its system forms effective speed closed loop control.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A kind of belt conveyor speed control device, comprising:

[0006] Speed measurement mechanism, the speed measurement mechanism is arranged at the position of the head roller of belt conveyor, and the speed measurement mechanism includes support and rotation speed sensor for measuring the rotation speed of belt conveyor arranged on the support;

[0007] Monitoring instrument, the monitoring instrument is electrically connected with speed measurement sensor;And

[0008] Control system, the control system includes rotation speed control module, and the rotation speed control module is electrically connected with monitoring instrument.

[0009] Preferably, the support includes mounting seat and serpentine pipe fixed on the top of mounting seat, and the rotation speed sensor is arranged at one end of serpentine pipe away from mounting seat.

[0010] Preferably, the monitoring instrument is intelligent rotation speed instrument.

[0011] Preferably, the belt conveyor speed measurement control device further comprises a plurality of grooves or keys evenly distributed at the belt conveyor shaft measurement position.

[0012] From the above technical solutions, the utility model has the following beneficial effects:

[0013] 1. In the utility model, the belt conveyor speed measurement control device is added on the spot of the belt conveyor to monitor the actual running speed of the motor in real time, and when the actual speed is detected to be too high, a fault shutdown command is immediately sent to the speed control module to realize immediate shutdown and brake function, so that the system forms effective speed closed-loop control.

[0014] 2. In the utility model, the actual speed signal can also be sent to the control system synchronously to realize monitoring of the actual running speed of the motor and saving of historical records. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 2 is a structure diagram of the connection of the support and the speed sensor of the utility model;

[0016] Figure 2 Fig. 3 is a structure diagram of the connection of the speed sensor and the monitoring instrument of the utility model.

[0017] In the figure: 110, support; 111, mounting seat; 112, coiled pipe; 120, speed sensor; 20, monitoring instrument. DETAILED DESCRIPTION

[0018] The preferred embodiment of the utility model will be described in detail below with reference to the drawings.

[0019] To achieve the above object, the embodiment of the utility model adopts the following technical scheme: refer to Figure 1 , Figure 2The utility model provides a kind of belt conveyor speed control device, including speed measuring mechanism, monitoring instrument 20 and control system, further, the speed measuring mechanism is arranged at the position of belt machine head roller, and the speed measuring mechanism includes support 110 and the rotational speed sensor 120 being arranged on support, the rotational speed sensor 120 is used to measure the rotational speed of belt machine, the monitoring instrument is electrically connected with rotational speed sensor 120, while the control system includes rotational speed control module, and the rotational speed control module is electrically connected with monitoring instrument 20, when using, by setting rotational speed sensor in the position of belt machine head roller, the actual running speed of motor is monitored in real time using the rotational speed sensor, and rotational speed monitoring is carried out through monitoring instrument, when detecting that actual rotational speed appears overspeed phenomenon, immediately issue fault stop command to rotational speed control module, to realize immediate stop and brake function, so that system forms effective speed closed loop control;In addition, the control system can also realize the saving of the history record of the actual running speed of motor while monitoring the actual running speed of motor.

[0020] Refer to Figure 1 As the preferred technical solutions of the embodiment, the support 110 includes a mounting seat 111 and a serpentine tube 112, the serpentine tube 112 is fixedly arranged at the top of the mounting seat, and the rotational speed sensor 120 is arranged at one end of the serpentine tube away from the mounting seat 111. The rotational speed sensor is a laser rotational speed sensor, which adopts the laser scattering principle to obtain the pulse signal of the rotor rotation, can measure the pulse signal of the motor rotor, and further measure the rotational speed of the rotor. It should be noted that the rotational speed sensor needs to be fixed on the head of the belt machine through the aforementioned support, and the support should have sufficient rigidity to prevent vibration and deformation. The rotational speed sensor should be firmly installed on the support and cannot be loose during operation. The distance between the rotational speed sensor and the measured body should not exceed 7.6 meters. Therefore, the support in the embodiment adopts the structure of the combination of the mounting seat and the serpentine tube. When in use, the mounting seat is fixedly arranged at the position of the head roller of the belt machine. The serpentine tube has flexibility and rigidity, which can not only realize the installation and fixation of the rotational speed sensor, but also realize the adjustment of the rotational speed sensor.

[0021] It should be noted that the rotational speed sensor 120 of the embodiment can output a pulse signal with stable amplitude and can realize long-distance transmission.

[0022] Further, the monitoring instrument 20 is an intelligent rotational speed instrument. In the embodiment, the monitoring instrument 20 is an HZS-04C type intelligent rotational speed meter, which is an intelligent rotational speed monitoring and protection instrument with a single-chip microcomputer as the core. The monitoring instrument has the characteristics of large output signal and good anti-interference performance, and does not need an external power supply. It has the functions of rotational speed monitoring, double-alarm setting point, and analog current output. It can be used in harsh environments such as smoke, oil gas, and water vapor, and is suitable for monitoring and protecting the rotational speed of the belt machine.

[0023] Further, the belt conveyor speed measurement control device further comprises a plurality of grooves or keys which are evenly distributed on the belt conveyor shaft measurement position, so that when the belt conveyor shaft rotates, the existence of the grooves or keys can make the rotation speed sensor probe produce a certain number of pulses per rotation. In addition, it should be noted that the grooves and keys in the embodiment can also be replaced by gears on the belt conveyor shaft, that is, the number of teeth of the gear is used as the number of pulses generated by the rotation speed sensor per rotation.

[0024] In use, by adding the belt conveyor speed measurement control device on the spot of the belt conveyor, when the actual speed is detected to have an overspeed phenomenon, a fault shutdown command is immediately sent to the control system to realize immediate shutdown and brake function, so that the system forms an effective closed-loop control, and the actual speed signal is sent to the control system to realize monitoring of the actual running speed of the motor.

[0025] The above-described embodiments are merely preferred embodiments of the present application and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A speed control device for a belt conveyor, characterized in that The application relates to a speed measuring and controlling device for a belt conveyor, which comprises the following parts: a speed measuring mechanism arranged at the position of a head roller of the belt conveyor, the speed measuring mechanism comprising a support (110) and a rotating speed sensor (120) arranged on the support for measuring the rotating speed of the belt conveyor; a monitoring instrument (20) electrically connected with the rotating speed sensor (120); and a control system comprising a rotating speed control module electrically connected with the monitoring instrument (20). The support (110) comprises a mounting base (111) and a coiled pipe (112) fixed on the top of the mounting base, and the rotating speed sensor (120) is arranged at the end of the coiled pipe away from the mounting base (111).

2. Belt conveyor speed measurement control device according to claim 1, characterized in that The monitoring instrument (20) is an intelligent rotating speed instrument.

3. Belt conveyor speed measurement control apparatus according to claim 1, characterized in that, The speed measuring and controlling device for the belt conveyor further comprises a plurality of grooves or protrusions uniformly arranged at the measuring position of the rotating shaft of the belt conveyor.

4. The belt conveyor speed control device of claim 1, wherein ​

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