System for detecting faults of long belt pull rope and deviation switch

Abstract

The utility model discloses a system for detecting faults of a long belt pull rope and a deviation switch, which comprises a plurality of PLC (programmable logic controller) control cabinets arranged along the extension direction of a belt conveyor belt, the PLC control cabinets are connected in series through optical fibers and are transmitted to a DCS (distributed control system) in an electric power room, and the DCS is arranged to be capable of transmitting fault signals to a central controller. The central control personnel can judge the fault; wherein the pull rope switch and the deviation switch on the belt are defined to be provided with digital quantity input points, and the PLC system in each PLC control cabinet is connected with the adjacent pull rope switch and deviation switch so as to receive control signals of the digital quantity input points. According to the system, fault points can be quickly searched and judged, the convenience and stability of operation are improved, the maintenance efficiency is greatly improved, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to a system for detecting long belt pull rope and deviation switch faults. Background Art

[0002] Existing belts longer than 3 kilometers are equipped with control systems, which are costly and full of functions. However, ordinary conveyor belts of 1-2 kilometers in length do not have control systems. For example, the belt conveyors used to transport from cement plants to docks and for distribution are generally 1-2 kilometers long, and the belt pull ropes and deviations are connected to the DCS cabinet in series. Once a belt pull rope or deviation failure occurs, maintenance personnel cannot find out which pull rope or deviation failure is in time, resulting in the entire maintenance operation process being time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] The purpose of the utility model is to provide a system for detecting long belt pull rope and deviation switch faults, which can quickly find and determine the fault point, improve the convenience and stability of operation, greatly improve the maintenance efficiency, and save time and effort.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a system for detecting long belt pull rope and deviation switch faults, the system comprises a plurality of PLC control cabinets arranged along the extension direction of the belt conveyor, the PLC control cabinets are connected in series through optical fibers and transmitted to a DCS system in a power room, the DCS system is configured to be able to send fault signals to the central control so that the central control personnel can identify the fault; wherein,

[0005] The pull rope switch and deviation switch on the belt are defined with digital input points, and each PLC system in the PLC control cabinet is connected to the adjacent pull rope switch and deviation switch to receive the control signal of the digital input point.

[0006] Preferably, a pair of pull-rope switches is provided every 30 m along the extending direction of the belt.

[0007] Preferably, a pair of deviation switches is provided every 50 m along the extending direction of the belt.

[0008] Preferably, each pair of the pull-rope switches or each pair of the deviation switches is defined as a digital quantity input point.

[0009] Preferably, every three pairs of the pull-rope switches, or every three pairs of the deviation switches, or every three pairs of adjacent pull-rope switches and deviation switches are allocated into a group.

[0010] Preferably, one PLC control cabinet is provided every 1000 m along the extending direction of the belt.

[0011] According to the above technical solution, the utility model connects the digital quantity input point control signal to the PLC system in the control cabinet, and the control cabinets are connected in series by optical fiber, and then sent to the nearest DCS system in the power room through optical fiber. The DCS control system can send the signal to the central control, and the central control personnel can identify the fault point in time. In this way, the fault point of a long belt can be reduced to a shorter range, greatly reducing the scope of fault detection. At the same time, the system provided by the utility model is connected through optical fiber, which greatly reduces the cost of transformation.

[0012] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0014] Figure 1 It is a diagram of the setting of a long belt conveyor control station in a system for detecting long belt pull rope and deviation switch failures provided by the utility model;

[0015] Figure 2 The utility model discloses a communication network layout diagram of a long belt conveyor in a system for detecting long belt pull rope and deviation switch failures. DETAILED DESCRIPTION

[0016] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0017] See also Figure 1 and Figure 2 The utility model provides a system for detecting long belt pull rope and deviation switch faults. The system includes a plurality of PLC control cabinets arranged along the extension direction of the belt conveyor. The PLC control cabinets are connected in series through optical fibers and transmitted to a DCS system in a power room. The DCS system is configured to be able to send fault signals to a central control system for the central control personnel to identify the fault; wherein,

[0018] The pull rope switch and deviation switch on the belt are defined with digital input points, and each PLC system in the PLC control cabinet is connected to the adjacent pull rope switch and deviation switch to receive the control signal of the digital input point.

[0019] In this embodiment, preferably, a pair of pull-cord switches is provided every 30 m along the extending direction of the belt.

[0020] In this embodiment, preferably, a pair of deviation switches are provided every 50 m along the extending direction of the belt.

[0021] In this embodiment, preferably, each pair of the pull-rope switches or each pair of the deviation switches is defined as a digital quantity input point.

[0022] In this embodiment, preferably, every three pairs of the pull-wire switches, or every three pairs of the deviation switches, or every three pairs of adjacent pull-wire switches and deviation switches are allocated into a group. Wherein, when every three pairs of pull-wire switches are allocated into a group, it is possible to quickly determine which group of pull-wire switches is faulty according to the central control fault, and then the pull-wire switches of the group are checked to quickly find the fault point; when every three pairs of deviation switches are allocated into a group, it is possible to quickly determine which group of deviation switches is faulty according to the central control fault, and then the deviation switches of the group are checked to quickly find the fault point; similarly, when every three pairs of adjacent pull-wire switches and deviation switches are allocated into a group, it is possible to quickly determine which group of pull-wire switches and deviation switches are faulty according to the central control fault, and then the pull-wire switches and deviation switches of the group are checked to quickly find the fault point.

[0023] In this embodiment, preferably, one PLC control cabinet is provided every 1000 m along the extending direction of the belt.

[0024] Through the above technical solution, the pull rope switches and deviation switches are allocated in groups of 3 pairs, and each pair is defined as a digital input point; a PLC control cabinet is set up every 1,000 meters, and the control signal of the digital input point is connected to the PLC system in the control cabinet. The control cabinets are connected in series with optical fibers, and then sent to the nearest DCS system in the power room through optical fibers. The DCS control system can send the signal to the central control, and the central control personnel can identify the fault point in time. In this way, the fault point of a belt of about 2 kilometers (the belt contains 70 pairs of pull rope switches and 45 pairs of deviation switches) can be reduced to within 150 meters, greatly reducing the scope of troubleshooting. At the same time, the system is connected through optical fibers to reduce the cost of transformation.

[0025] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0026] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0027] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A system for detecting long belt pull rope and deviation switch failures, characterized in that: The system includes a plurality of PLC control cabinets arranged along the extension direction of the belt conveyor, the PLC control cabinets are connected in series through optical fibers and transmitted to the DCS system in the power room, and the DCS system is configured to be able to send fault signals to the central control so that the central control personnel can identify the fault; wherein, The pull rope switch and deviation switch on the belt are defined with digital input points, and each PLC system in the PLC control cabinet is connected to the adjacent pull rope switch and deviation switch to receive the control signal of the digital input point.

2. The system for detecting long belt pull rope and deviation switch failure according to claim 1, characterized in that: A pair of pull-rope switches is provided every 30 m along the extending direction of the belt.

3. The system for detecting long belt pull rope and deviation switch failure according to claim 2, characterized in that: A pair of deviation switches is provided every 50 m along the extending direction of the belt.

4. The system for detecting long belt pull rope and deviation switch failure according to claim 3, characterized in that: Each pair of the pull-rope switches or each pair of the deviation switches is defined as a digital input point.

5. The system for detecting long belt pull rope and deviation switch failure according to claim 4, characterized in that: Every three pairs of the pull-rope switches, or every three pairs of the deviation switches, or every three pairs of adjacent pull-rope switches and deviation switches are allocated into a group.

6. The system for detecting long belt pull rope and deviation switch failure according to claim 1, characterized in that: A PLC control cabinet is provided every 1000 m along the extending direction of the belt.

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