Belt conveyor tearing detection device

Abstract

The utility model relates to a belt conveyor tearing detection device which comprises a cross beam, a rubber baffle plate, a swing needle stop iron, a swing needle, a proximity switch, a radar sensor, an audible and visual alarm, a belt conveyor control system and a wireless PLC (Programmable Logic Controller), the cross beam is arranged below an upper-layer belt and above a parallel carrier roller, the radar sensor is arranged on the cross beam, and the audible and visual alarm is arranged on the cross beam. The detection direction of the radar sensor is the running direction of the belt; the rubber baffle is arranged below the parallel carrier rollers and above the lower-layer belt, the rubber baffle is fixedly connected with the parallel carrier rollers and rotates along with rotating shafts of the parallel carrier rollers, the swing needle is perpendicular to the belt and installed on a carrier roller shaft, and the swing needle stop iron is welded to the swing needle and coaxially rotates along with the rubber baffle. The proximity switch is arranged at the position, matched with the swing needle stop iron when the swing needle is perpendicular to the cross beam, of the cross beam. Signal lines of the proximity switch, the radar sensor and the audible and visual alarm are all connected to the wireless PLC. The device can detect and discover belt tearing faults in time, and the whole circle of the belt is prevented from being torn.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, in particular to a belt conveyor tear detection device. Background Art

[0002] The belt conveyor is the main material transmission equipment in the raw material branch of the Iron and Steel Plant. It has the characteristics of strong transmission capacity, high efficiency and strong adaptability to materials.

[0003] The main components of a belt conveyor include a drive unit, a load-bearing device, a traction device, a control system, a protective device, and a rubber belt. Driven by a driving pulley, the belt moves, transporting materials or products from one location to another. Stable belt operation is crucial to production continuity and product quality during the process. During extended operation, belts can tear due to various reasons, such as foreign objects getting stuck, scratches from sharp objects, and overloading. If not detected in time, these tears often result in the entire belt being torn. The traditional solution relies on regular inspections and patrols by operators to detect potential tears, but this approach is inefficient and can easily miss the optimal time for intervention. Summary of the Invention

[0004] The utility model provides a belt conveyor tear detection device, which can detect and discover belt tear faults in time and avoid the entire belt from being torn.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A belt conveyor tear detection device comprises a crossbeam, a rubber baffle, a swing stop iron, a pendulum needle, a proximity switch, a radar sensor, an audible and visual alarm, a belt conveyor control system and a wireless PLC, wherein the crossbeam is arranged below the upper belt and above the parallel rollers, the radar sensor is arranged on the crossbeam, and the detection direction of the radar sensor is the belt running direction; the rubber baffle is arranged below the parallel rollers and above the lower belt, the rubber baffle is fixedly connected to the parallel rollers and rotates with the rotating shaft of the parallel rollers, the pendulum needle is installed on the roller shaft perpendicular to the belt, the pendulum needle stop iron is welded to the pendulum needle and rotates coaxially with the rubber baffle, the proximity switch is arranged on the crossbeam at a position matching the pendulum needle stop iron when the pendulum needle is perpendicular, the wireless PLC is arranged next to the belt conveyor, the audible and visual alarm is arranged next to the wireless PLC, the signal lines of the proximity switch, radar sensor and audible and visual alarm are all connected to the wireless PLC, and the wireless PLC is connected to the belt conveyor control system wirelessly.

[0007] Furthermore, it also includes a hanging beam, which is arranged on the parallel roller shaft and is arranged below the parallel rollers and above the lower belt, and the rubber baffle is hung on the hanging beam.

[0008] Furthermore, the rubber baffle is arranged 1 to 1.5 cm above the lower belt.

[0009] Furthermore, the width of the rubber baffle is the same as the width of the belt.

[0010] Furthermore, the digital input signal end of the wireless PLC is connected to the proximity switch signal line, the analog input signal end of the wireless PLC is connected to the signal line of the radar sensor, and the digital output end of the wireless PLC is connected to the signal line of the sound and light alarm.

[0011] Furthermore, the pendulum needle stop iron has a width of 1.5 to 2.5 cm and a height of 1 to 1.5 cm.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1) Use the radar sensor to scan the running direction of the belt, and cooperate with the rubber baffle, the swing needle baffle and the proximity switch to detect whether there is any object falling on the belt or whether the belt is torn;

[0014] 2) Use the sound and light alarm to warn the operator of belt tearing to prevent the belt tearing from expanding and causing the entire belt to tear;

[0015] 3) Wireless communication is carried out with the belt conveyor control system through wireless PLC, reducing the laying of on-site cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] In the figure: 1. Upper belt 2. Lower belt 3. Parallel rollers 4. Hanging beam 5. Rubber baffle 6. Swing needle 7. Proximity switch 8. Radar sensor 9. Crossbeam 10. Swing needle iron stop DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0019] See Figure 1, is a structural diagram of the present invention. The present invention is a belt conveyor tear detection device, comprising a crossbeam 9, a rubber baffle 5, a hanging beam 4, a swinging iron stop 10, a pendulum needle 6, a proximity switch 7, a radar sensor 8, an audible and visual alarm, a belt conveyor control system and a wireless PLC. The crossbeam 9 is arranged below the upper belt 1 and above the parallel rollers 3. The radar sensor 8 is arranged on the crossbeam 9. The detection direction of the radar sensor 8 is the running direction of the belt; the hanging beam 4 is arranged on the axis of the parallel rollers 3. The rubber baffle 5 is arranged on the hanging beam 4 below the parallel rollers 3 and above the lower belt 2. The rubber baffle 5 is arranged 1 cm above the lower belt 2. The width of the rubber baffle 5 is the same as the width of the belt. The plate 5 is fixedly connected to the parallel roller 3 and rotates with the rotating shaft of the parallel roller 3. The pendulum needle 6 is installed on the roller shaft perpendicular to the belt. The pendulum needle stop iron 10 is welded on the pendulum needle and rotates coaxially with the rubber baffle 5. The proximity switch 7 is set on the crossbeam 9 at a position that matches the pendulum needle stop iron 10 when the pendulum needle 6 is perpendicular. The wireless PLC is set next to the belt conveyor, and the sound and light alarm is set next to the wireless PLC. The digital input signal end of the wireless PLC is connected to the proximity switch 7 signal line, the analog input signal end of the wireless PLC is connected to the signal line of the radar sensor 8, and the digital output end of the wireless PLC is connected to the signal line of the sound and light alarm. The wireless PLC is connected to the belt conveyor control system wirelessly.

[0020] Working principle: When no material passes through the belt, the rubber baffle 5 and the pendulum needle 6 remain stationary, and when material passes over the lower belt 2, the detection surface of the radar sensor 8 detects that an object has passed, and the material will push the rubber baffle 5 to rotate, causing the pendulum needle 6 to deviate. After the proximity switch 7 detects the deviation of the pendulum needle stop iron 10 on the pendulum needle 6, it transmits the signal to the wireless PLC, and the sound and light alarm sounds an alarm. According to the received signal, the belt tear fault is judged, and a stop command is immediately issued to achieve a rapid shutdown and avoid the expansion of the accident; when only the radar sensor 8 signal indicates that a foreign object may have flown by, and it cannot be determined as a belt tear. When only the rubber baffle 5 and the pendulum needle 6 swing, and the proximity switch 7 signal is disconnected, it indicates that there may be foreign matter accumulated in the lower belt 2, and it cannot be determined as a belt tear. Only when the radar sensor 8 and the proximity switch 7 disconnect signals are met at the same time can it be determined as a belt tear, and an alarm signal and a stop command are issued.

[0021] During the installation process, it is necessary to ensure that the distance between the rubber baffle 5 and the belt is 1CM to prevent the pendulum needle and the proximity switch from being too sensitive and prone to misoperation. The pendulum needle stop iron is welded to the pendulum needle to cooperate with the proximity switch. The width and height of the pendulum needle stop iron are 2cm*1cm, and the verticality of the pendulum needle stop iron and the belt meets the requirements. After the installation is completed, debugging is required to simulate the situation of materials passing through the belt to check whether the pendulum needle 6 offset can be accurately detected and the signal can be transmitted to the wireless PLC to ensure the normal operation of the detection device.

[0022] The above embodiments are implemented under the premise of the technical solution of the present utility model, and detailed implementation methods and specific operation processes are given, but the protection scope of the present utility model is not limited to the above embodiments. The methods used in the above embodiments are conventional methods unless otherwise specified.

Claims

1. A belt conveyor tear detection device, characterized in that: It includes a crossbeam, a rubber baffle, a swing stop iron, a pendulum needle, a proximity switch, a radar sensor, an audible and visual alarm, a belt conveyor control system and a wireless PLC. The crossbeam is arranged below the upper belt and above the parallel rollers. The radar sensor is arranged on the crossbeam, and the detection direction of the radar sensor is the belt running direction; the rubber baffle is arranged below the parallel rollers and above the lower belt. The rubber baffle is fixedly connected to the parallel rollers and rotates with the rotating shaft of the parallel rollers. The pendulum needle is installed on the roller shaft perpendicular to the belt. The pendulum needle stop iron is welded to the pendulum needle and rotates coaxially with the rubber baffle. The proximity switch is arranged on the crossbeam at a position that matches the pendulum needle stop iron when the pendulum needle is perpendicular to the belt. The wireless PLC is arranged next to the belt conveyor. The audible and visual alarm is arranged next to the wireless PLC. The signal lines of the proximity switch, radar sensor and audible and visual alarm are all connected to the wireless PLC. The wireless PLC is connected to the belt conveyor control system wirelessly.

2. A belt conveyor tear detection device according to claim 1, characterized in that: It also includes a hanging beam, which is arranged on the parallel roller shaft and is arranged below the parallel rollers and above the lower belt. The rubber baffle is hung on the hanging beam.

3. The belt conveyor tear detection device according to claim 1, characterized in that: The rubber baffle is arranged 1 to 1.5 cm above the lower belt.

4. The belt conveyor tear detection device according to claim 1, characterized in that: The width of the rubber baffle is the same as the width of the belt.

5. The belt conveyor tear detection device according to claim 1, characterized in that: The digital input signal end of the wireless PLC is connected to the proximity switch signal line, the analog input signal end of the wireless PLC is connected to the signal line of the radar sensor, and the digital output end of the wireless PLC is connected to the signal line of the sound and light alarm.

6. The belt conveyor tear detection device according to claim 1, characterized in that: The width of the pendulum needle stop iron is 1.5 to 2.5 cm, and the height is 1 to 1.5 cm.

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