Signal acquisition system for belt conveyor

Abstract

The utility model provides a signal acquisition system for a belt conveyor, and belongs to the field of conveyor signal acquisition and monitoring. The problems that an existing signal collecting system for the belt conveyor is serious in signal interference and difficult to maintain, and the production efficiency is affected are solved. In order to solve the technical problem, the technical scheme adopted by the utility model is as follows: the device comprises a plurality of signal collectors, the signal collectors are distributed at signal collection positions of the belt conveyor, the signal collectors are electrically connected with a PLC (Programmable Logic Controller) and a plurality of sensors, and each signal collector comprises an analog quantity input module and a plurality of temperature signal collection modules, the analog quantity input module and the plurality of temperature signal acquisition modules are electrically connected to the CPU module, the CPU module is further electrically connected with a communication module, the communication module is electrically connected to the PLC through a communication interface module, and the PLC is electrically connected to the upper computer; the signal acquisition and monitoring device is applied to signal acquisition and monitoring of conveyors.

Description

TECHNICAL FIELD

[0001] The utility model provides a signal acquisition system for belt conveyor belongs to conveyor signal acquisition monitoring technical field. BACKGROUND

[0002] Generally, signal collectors are arranged at the head drive, middle drive, tail drive and other drive parts of the belt conveyor to collect the signals of the temperature, oil pressure, oil level and vibration of each drive motor, speed reducer and roller at different positions on the belt conveyor, so as to ensure the healthy operation of the monitored components. At present, there are significant problems in the signal acquisition of the belt conveying system, and the existing acquisition mode is mostly sensor direct connection to the PLC control box. In this mode, due to the excessively long transmission line, the pressure drop is large, especially for DC12V intrinsic safety signal, not only the pressure drop is obvious, but also it is easily disturbed by the high voltage line in the line.

[0003] Chinese invention patent (CN 110630272 A) in order to solve the problem of unstable signal transmission and low measurement accuracy caused by excessively long signal transmission cable, proposes a long distance belt conveyor comprehensive protection system for tunnel boring machine, which is composed of Dupline bus communication system composed of comprehensive protection box, gateway and channel generator, realizes long distance transmission and anti-interference, and further realizes connection with PLC, personal computer and special controller.

[0004] However, long distance wiring not only increases the cable cost, but also requires additional configuration of PLC substation control box for the middle drive and tail drive of the belt conveyor, further increasing the equipment operation cost.

[0005] When the belt conveyor is configured with four or more drive devices, the number of wiring is as many as 30 or more, which not only brings great pressure to the daily maintenance and repair work, but also significantly increases the material and labor cost. After long-term operation, problems such as signal interference and obvious signal monitoring curve fluctuation may occur. Due to frequent cable maintenance and long time consumption, the downtime will be increased, which seriously affects the production efficiency. UTILITY MODEL CONTENTS

[0006] The utility model discloses a signal acquisition system for belt conveyor belongs to conveyor signal acquisition monitoring technical field.

[0007] In order to solve the above technical problems, the utility model adopts the technical scheme as follows: a signal acquisition system for belt conveyor, comprising a plurality of signal collectors, the plurality of signal collectors are distributed at the signal acquisition place of the belt conveyor;

[0008] The signal collector is electrically connected with a PLC controller and a plurality of sensors.

[0009] The signal collector comprises an analog input module and a plurality of temperature signal acquisition modules, the analog input module and the plurality of temperature signal acquisition modules are electrically connected to a CPU module, the CPU module is further electrically connected with a communication module, the communication module is electrically connected to the PLC controller through a communication interface module, and the PLC controller is electrically connected to an upper computer.

[0010] Further, the sensor and the signal collector are connected through a cable.

[0011] Further, the transmission distance between the sensor and the signal collector is less than or equal to 5 m.

[0012] Further, the signal acquisition place comprises a head drive place, a middle drive place and a tail drive place.

[0013] Further, the analog input module comprises an oil pressure acquisition module, an oil level acquisition module and a vibration signal acquisition module, and the oil pressure acquisition module, the oil level acquisition module and the vibration signal acquisition module are independently arranged.

[0014] Further, the communication interface module is provided with two optical ports and three electrical ports.

[0015] Further, the analog input module and the plurality of temperature signal acquisition modules are electrically connected with a power module.

[0016] Further, the sensor is provided with four sensors, namely a temperature sensor, an oil pressure sensor, an oil level sensor and a vibration sensor.

[0017] Further, the temperature signal acquisition module is provided with five temperature signal acquisition modules.

[0018] The utility model discloses relative to prior art has the beneficial effect of having:

[0019] 1, the plurality of sensors of the utility model are connected to the signal collector, and the signal collector transmits the state signal of each part driving source on the belt conveyor to the PLC controller, realizes the control and monitoring of each part driving source on the belt conveyor, and guarantees the healthy operation of the belt conveyor.

[0020] 2. The plurality of signal collectors of the utility model are arranged at the head drive, middle drive and tail drive of the belt conveyor respectively, the signal collector and the sensor of the head drive, middle drive and tail drive are electrically connected through the cable, the temperature signal, oil pressure signal, oil level signal and vibration signal of each part drive source on the belt conveyor are collected, and the signal is transmitted to the PLC control through the network cable or optical fiber, the signal transmission distance of various sensors is shortened, the cable cost and maintenance cost are saved, strong electric interference is avoided, economic loss caused by shutdown is reduced, safety risk caused by non-timely patrol during the operation of the belt conveyor is reduced, and safety production is further ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described below in combination with the drawings:

[0022] Fig. 1 It is the structure schematic diagram of the utility model;

[0023] Fig. 2 It is the system structure schematic diagram of the signal collector of the utility model;

[0024] Fig. 3 It is the position distribution structure schematic diagram of the signal collector and each sensor on the belt conveyor of the utility model.

[0025] In the drawing: 1 is signal collector, 2 is temperature sensor, 3 is oil pressure sensor, 4 is oil level sensor, 5 is vibration sensor, 6 is PLC controller, 7 is belt conveyor, 8 is carrier roller, 9 is belt, 10 is cable. DETAILED DESCRIPTION

[0026] In the utility model, unless otherwise stated, the orientation words such as "upper, lower, top, bottom" are generally directed to the direction shown in the drawings, or directed to the vertical, perpendicular or gravity direction of the component itself; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0027] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the application can be understood according to specific circumstances.

[0028] For example, Figs. 1 to 3The utility model provides a signal collection system for belt conveyor, including a plurality of signal collector 1, a plurality of signal collector 1 distributes in the signal collection place of belt conveyor 7, and the signal collection place is specifically the installation position of the driving source on the belt conveyor 7, namely signal collector 1 is installed to the machine body of belt conveyor 7 through fixed support, and signal collector 1 distributes in the vicinity of the driving source on the belt conveyor 7, and the signal collection place includes head drive place, middle drive place and tail drive place. Head drive is located at the starting end of belt conveyor 7, usually is constituted by motor, speed reducer, transmission drum etc.;Middle drive is installed in the middle part of belt conveyor 7, also contains motor, speed reducer, transmission drum etc. device, in addition, part middle drive is also equipped with tensioning device, is used for adjusting the tension of belt. Tail drive is at the end of belt conveyor 7, and the structure is similar with head drive, but the function of part tail drive is focused on the tensioning and guiding of belt, by adjusting the position of tail drive, the tension of belt can be changed, and the proper tightness of belt is kept in the running process.

[0029] Signal collector 1 is electrically connected with PLC controller 6 and a plurality of sensors, and a plurality of sensors are connected with signal collector 1 through cable 10, and the model of cable 10 is MKVVP-4*1.0mm 2 , the length of cable 10 is less than or equal to 5m, that is, the transmission distance between sensor and signal collector 1 is less than or equal to 5m, and the cable 10 between sensor and signal collector 1 does not pass through high-voltage cable, and signal collector 1 transmits the signal collected by sensor to PLC controller 6 through network cable or optical fiber, saves the cost and maintenance cost of cable 10, avoids strong electric interference, and reduces the economic loss caused by shutdown. In the embodiment, four sensors are arranged, which are temperature sensor 2, oil pressure sensor 3, oil level sensor 4 and vibration sensor 5, temperature sensor 2 and vibration sensor 5 are arranged in the vicinity of the cooperation surface of the carrier roller 8 of belt conveyor 7 and the belt 9 of belt conveyor 7, and oil pressure sensor 3 and oil level sensor 4 are installed near the driving source (not marked in the figure).

[0030] The signal collector 1 comprises an 8-channel analog quantity input module and a plurality of 4-channel temperature signal collection modules, the analog quantity input module and the plurality of temperature signal collection modules are electrically connected to a CPU module and a power module, the CPU module is further electrically connected with a communication module, the communication module is electrically connected to a PLC controller 6 through a communication interface module, the PLC controller 6 is installed in a head drive of a belt conveyor 7, and the PLC controller 6 is electrically connected to an upper computer.

[0031] The communication interface module comprises two Ethernet optical ports and three Ethernet electrical ports, is used for realizing photoelectric signal mutual conversion between a cable 10 and an optical fiber, and facilitates data transmission between networks of different media.

[0032] The oil pressure collection module, the oil level collection module, the vibration signal collection module and the temperature signal collection module in the utility model are all prior art, and will not be repeated here.

[0033] The working principle of the utility model is as follows:

[0034] The signal collector 1 is powered by an intrinsic safety power supply, and real-time collection of temperature, oil level, oil pressure and vibration signals of the driving source on the field belt conveyor 7 uploaded by the temperature sensor 2, the oil pressure sensor 3, the oil level sensor 4 and the vibration sensor 5 is transmitted to an analog input module and / or a temperature signal collection module, the analog input module and / or the temperature signal collection module transmit the signals to a CPU module for data processing, and then the processed temperature, oil level, oil pressure and vibration signals are transmitted to a communication interface module through a communication module, the communication interface module transmits the signals to the PLC controller 6 through a network cable or an optical fiber, and users can program on the PLC controller 6 body to meet different automatic control systems, the PLC controller 6 is electrically connected with an upper computer to realize remote control, and the upper computer controls the PLC controller 6 to realize monitoring, control and recording of the running state of the driving source of each part on the field belt conveyor.

[0035] It should be noted that the connection relationship between the components and modules of the utility model is determined and can be realized, and the specific connection relationship can bring corresponding technical effects, and based on the premise of not relying on the execution of the corresponding software program, the technical problems proposed by the utility model are solved, the model, connection mode between components, modules and specific components in the utility model, and the conventional use method and predictable technical effects brought by the above technical features, except for the specific description, belong to the public content disclosed in the patent, journal paper, technical manual, technical dictionary, textbook obtained by the applicant before the application date, or belong to the existing technology of conventional technology and common sense, and do not need to be described in detail, so that the technical scheme provided in the case is clear, complete and realizable, and the corresponding entity product can be reproduced or obtained according to the technical means.

[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. A signal acquisition system for a belt conveyor, characterized in that, It includes several signal collectors (1), and multiple signal collectors (1) are distributed at the signal collection point of the belt conveyor (7); The signal acquisition unit (1) is electrically connected to a PLC controller (6) and several sensors; The signal acquisition device (1) includes an analog input module and several temperature signal acquisition modules. The analog input module and several temperature signal acquisition modules are electrically connected to the CPU module. The CPU module is also electrically connected to a communication module. The communication module is electrically connected to the PLC controller (6) through a communication interface module. The PLC controller (6) is electrically connected to the host computer.

2. The signal acquisition system for a belt conveyor according to claim 1, characterized in that, The sensor is connected to the signal acquisition unit (1) via a cable (10).

3. The signal acquisition system for a belt conveyor according to claim 1, characterized in that, The transmission distance between the sensor and the signal acquisition device (1) is ≤5m.

4. The signal acquisition system for a belt conveyor according to claim 1, characterized in that, The signal acquisition points include the head drive, middle drive, and tail drive.

5. A signal acquisition system for a belt conveyor according to claim 1, characterized in that, The analog input module includes an oil pressure acquisition module, an oil level acquisition module, and a vibration signal acquisition module, which are set up independently.

6. The signal acquisition system for a belt conveyor according to claim 1, characterized in that, The communication interface module is equipped with two optical ports and three electrical ports.

7. A signal acquisition system for a belt conveyor according to claim 1, characterized in that, The analog input module and multiple temperature signal acquisition modules are electrically connected to a power supply module.

8. A signal acquisition system for a belt conveyor according to claim 1, characterized in that, There are four sensors: a temperature sensor (2), an oil pressure sensor (3), an oil level sensor (4), and a vibration sensor (5).

9. A signal acquisition system for a belt conveyor according to claim 1, characterized in that, The temperature signal acquisition module is configured with five modules.

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