Abnormal state monitoring and alarming device for conveying belt

Abstract

The utility model discloses a conveyer belt abnormal state monitoring alarm device, which comprises a monitoring system, an electric control system and an alarm system, the monitoring system comprises a proximity switch arranged on the back surface of a conveyer belt and a plurality of metal strips regularly distributed on the back surface of the conveyer belt, and the proximity switch senses the change of the plurality of metal strips and the relative position thereof and generates an input signal; when the input signal is a fault signal, the electric control system outputs an alarm instruction signal to the alarm system; the proximity switch is arranged on the conveying belt support through a proximity switch support. The electric control system comprises a PLC system and a communication system, and the PLC system receives an input signal of the monitoring system and outputs an alarm instruction signal to the alarm system; and the communication module is connected with the PLC system so as to transmit the information of the PLC system to the manufacturing system. Through the device, the abnormal state of the conveying belt can be alarmed.

Description

Technical Field

[0001] The utility model relates to a conveyor belt abnormal state monitoring and alarm device. Background Art

[0002] Material conveyor belts are an indispensable part of the material transmission system in the tobacco processing industry. During daily production and transportation, due to the combined effects of factors such as aging and adhesion of the conveyor belt, wear and tear due to long-term operation, vibration and displacement of the front and rear equipment connection, and delays in the electronic control system, the conveyor belt is prone to breakage, wear and deviation, aging and adhesion, and conveyor roller slippage and idling, which have a great impact on the operation of the equipment and eventually cause the conveying system to stop due to material blockage, seriously affecting the continuity, automation, and leanness of the processing production line.

[0003] It is urgent to design a conveyor belt abnormal state monitoring and alarm device to prevent the conveyor belt from deviation, slipping, adhesion, blockage and other abnormal situations, improve the equipment production level, quality level and production line one-time yield, and reduce the enterprise's production and manufacturing costs. Utility Model Content

[0004] The utility model aims to provide a conveyor belt abnormal state monitoring and alarm device to solve the existing technical problems, timely detect conveyor belt deviation, slippage, adhesion, material blockage and automatically alarm.

[0005] In order to achieve the above technical objectives, the utility model provides an abnormal state monitoring and alarm device for a conveyor belt, which includes a monitoring system, an electric control system and an alarm system. The electric control system signal is connected to the monitoring system and receives the input signal of the monitoring system, and the electric control system signal is connected to the alarm system and outputs an alarm command signal to the alarm system; the monitoring system includes: a proximity switch arranged on the back of the conveyor belt and a plurality of metal strips regularly distributed on the back of the conveyor belt, the proximity switch senses the plurality of metal strips and their relative position changes and generates the input signal, the input signal includes: a regular signal generated when the relative positions of the plurality of metal strips are regular, and a fault signal generated when the relative positions of the plurality of metal strips change. When the input signal is a fault signal, the electric control system outputs the alarm command signal to the alarm system; the proximity switch is arranged on a proximity switch bracket, and the proximity switch bracket is fixedly connected to the conveyor belt bracket; the proximity switch has two groups and is respectively arranged on both sides of the conveyor belt, and the plurality of metal bars has two groups and is respectively arranged on both sides of the conveyor belt, and the plurality of metal bars on each side are parallel to each other and arranged at the same distance; the electric control system includes: a PLC system and a communication system, the PLC system receives the input signal of the monitoring system and outputs the alarm command signal to the alarm system; the communication module is connected to the PLC system to transmit the information of the above-mentioned PLC system to the production and manufacturing system.

[0006] The utility model provides a conveyor belt abnormal state monitoring alarm device for the conveyor belt abnormal state, which determines whether a fault occurs according to the induction signal of a plurality of regularly arranged metal strips sensed by a proximity switch, and controls the alarm system to alarm through an electric control system, such as an automatic detection alarm device for deviation, slippage, material blockage and adhesion.

[0007] As a further improvement, the metal strip is rectangular and is embedded inside the conveyor belt along the transverse direction of the conveyor belt.

[0008] As a further improvement, the two groups of input signals sensed by the proximity switches include: two groups of regular signals, one group of regular signals and one group of fault signals, and two groups of fault signals.

[0009] As a further improvement, the proximity switch bracket is arranged transversely on the back of the conveyor belt, the rear of the proximity switch is fixedly connected to the proximity switch bracket, and the front of the proximity switch is arranged opposite to the conveyor belt and perpendicular to the metal strip.

[0010] As a further improvement, the conveyor belt bracket is arranged on both sides of the conveyor belt, and both ends of the proximity switch bracket are fixedly connected to the conveyor belt bracket.

[0011] The utility model has a simple structure, is easy to use, and has high working efficiency. It uses metal strips buried in the conveyor belt (the metal strips are regularly distributed). Under normal circumstances, when the PLC receives the metal strip signals from two proximity switches at the same time, it determines that the belt is centered. When the belt deviates, the proximity switch can only sense the metal strip on one side, thereby determining the deviation of the belt. In the event of an abnormality, a signal will be sent to the PLC system to be displayed on the production system screen, and the sound and light alarm system to prompt the occurrence of an abnormality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the utility model.

[0013] Reference numerals: 1. conveyor belt, 2. conveyor belt support, 3. proximity switch, 4. proximity switch support, 5. metal strip. DETAILED DESCRIPTION

[0014] like Figure 1 As shown, the utility model provides an abnormal state monitoring and alarm device for a conveyor belt, which includes a monitoring system, an electric control system and an alarm system. The electric control system signal is connected to the monitoring system and receives an input signal from the monitoring system. The electric control system signal is connected to the alarm system and outputs an alarm command signal to the alarm system. The monitoring system includes: a proximity switch 3 arranged on the back of the conveyor belt 1 and a plurality of metal strips 5 regularly distributed on the back of the conveyor belt 1. The proximity switch 3 senses the plurality of metal strips 5 and their relative position changes and generates the input signal. The input signal includes: a regular signal generated when the relative positions of the plurality of metal strips 5 are regular, and a fault signal generated when the relative positions of the plurality of metal strips 5 change. When the input When the signal is a fault signal, the electric control system outputs the alarm command signal to the alarm system; the proximity switch 3 is arranged on the proximity switch bracket 4, and the proximity switch bracket 4 is fixedly connected to the conveyor belt bracket 2; the proximity switch has two groups and is arranged on both sides of the conveyor belt respectively, and the multiple metal bars have two groups and are arranged on both sides of the conveyor belt respectively, and the multiple metal bars on each side are parallel to each other and arranged at the same distance; the electric control system includes: a PLC system and a communication system, the PLC system receives the input signal of the monitoring system and outputs the alarm command signal to the alarm system; the communication module is connected to the PLC system to transmit the information of the above-mentioned PLC system to the production and manufacturing system.

[0015] The utility model provides a conveyor belt abnormal state monitoring alarm device for the conveyor belt abnormal state, which determines whether a fault occurs according to the induction signal of a plurality of regularly arranged metal strips sensed by a proximity switch, and controls the alarm system to alarm through an electric control system, such as an automatic detection alarm device for deviation, slippage, material blockage and adhesion.

[0016] As a further improvement, the proximity switches have two groups and are respectively arranged on both sides of the conveyor belt.

[0017] As a further improvement, the plurality of metal strips are provided in two groups and are respectively arranged on both sides of the conveyor belt.

[0018] As a further improvement, the plurality of metal strips on each side are arranged parallel to each other and spaced at the same distance.

[0019] As a further improvement, the metal strip is rectangular and is embedded inside the conveyor belt along the transverse direction of the conveyor belt.

[0020] As a further improvement, the two groups of input signals sensed by the proximity switches include: two groups of regular signals, one group of regular signals and one group of fault signals, and two groups of fault signals.

[0021] As a further improvement, the proximity switch bracket is arranged transversely on the back of the conveyor belt, the rear of the proximity switch is fixedly connected to the proximity switch bracket, and the front of the proximity switch is arranged opposite to the conveyor belt and perpendicular to the metal strip.

[0022] As a further improvement, the conveyor belt bracket is arranged on both sides of the conveyor belt, and both ends of the proximity switch bracket are fixedly connected to the conveyor belt bracket.

[0023] The utility model has a simple structure, is easy to use, and has high working efficiency. It uses metal strips buried in the conveyor belt (the metal strips are regularly distributed). Under normal circumstances, when the PLC receives the metal strip signals from two proximity switches at the same time, it determines that the belt is centered. When the belt deviates, the proximity switch can only sense the metal strip on one side, thereby determining the deviation of the belt. In the event of an abnormality, a signal will be sent to the PLC system to be displayed on the production system screen, and the sound and light alarm system to prompt the occurrence of an abnormality.

[0024] In a preferred embodiment, the conveyor belt abnormal state detection and alarm system consists of three parts: a monitoring system, an electronic control system, and an alarm system.

[0025] The monitoring system consists of proximity switches and regularly distributed metal strips. The proximity switch is an ideal electronic switch sensor that can be operated without mechanical direct contact with the moving metal strip parts. When the metal strip is used as the detection body to approach the sensing area of ​​the switch, the switch can quickly issue electrical instructions without contact, pressure, or sparks, accurately reflecting the position and stroke of the moving mechanism. It has good positioning accuracy, operating frequency, service life, convenience of installation and adjustment, and applicability to harsh environments. It has good sensing performance, reliable operation, stable performance, and fast frequency response.

[0026] The electronic control system consists of a PLC system and a communication system. The PLC system is used to receive signals input from the monitoring system and output command signals to the alarm system. The communication module is connected to the PLC system to transmit PLC information to the production and manufacturing system. When the conveyor belt deviates, slips, sticks, or is blocked, the PLC transmits the alarm information to the alarm system sound and light alarm.

[0027] Alarm system sound and light alarm. Sound and light alarm is connected to the control system to remind the staff of abnormal situation.

[0028] The proximity switch is installed at the bottom of the belt and does not contact the material. The metal strip is buried inside the belt and does not contact the material. It can be applied to belts of various specifications. The proximity switch is a position switch that can be operated without direct mechanical contact with the metal strip. When the metal strip approaches the sensing surface of the switch to the action distance, the switch can be operated without mechanical contact or any pressure, thereby driving DC appliances or providing control instructions to computer (PLC) devices. It has a long service life, strong anti-interference ability, and is waterproof, shockproof, and corrosion-resistant.

[0029] The utility model includes three parts: monitoring system, electric control system and alarm system. When the belt is in the middle, adjust the installation position and height of the two proximity switches so that the outermost end of the metal strip (the side close to the edge of the belt) is directly below the proximity switch, and the height is 2 to 4 mm from the belt surface. The function of the proximity switch is to serve as a detection element for abnormal belt conditions. Under normal circumstances, when the PLC receives the metal strip signals from the two proximity switches at the same time, it determines that the belt is in the middle. When the belt deviates, the proximity switch can only sense the metal strip on one side, and the deviation of the belt is determined accordingly.

[0030] When the device is used, the proximity switch bracket is installed on the conveyor belt frame, and the proximity switch is installed at both ends of the conveyor belt frame, with a height of 2 to 4 mm from the conveyor belt surface. When the belt is running, the proximity switch can detect the regular metal strip signal abnormality at the same time. If an abnormality occurs, the signal will be sent to the PLC system to display on the production system screen, and the sound and light alarm system to prompt the abnormality.

[0031] The monitoring system monitors whether the signal is a regular signal. If it is a regular signal, the conveyor belt is normal. If it is an irregular signal (including unilateral and bilateral irregularity), a fault has occurred and the fault signal is transmitted to the PLC. The alarm signal is transmitted through the PLC of the electronic control system, and the fault is transmitted to the production system through the communication module. Manual intervention on the conveyor belt is performed based on the alarm signal. For example, if there is a fault signal on one side and a regular signal on the other side, it means that the belt is deviating. If there are fault signals on both sides (irregular signals), it means slipping or sticking.

[0032] The detection alarm system of the utility model is accurate and efficient, reliable in operation, stable in performance, long in service life, strong in anti-interference ability, simple in device structure, convenient and quick in installation, safe and reliable, does not affect material transportation, has wide applicability, and can be applied to various types of belts.

[0033] It should be understood that the scope of protection of the present invention is not limited to the non-limiting embodiments, and it should be understood that the non-limiting embodiments are only described as examples. The substantial protection scope required by this application is further reflected in the scope provided by the independent claims, as well as its dependent claims.

Claims

1. A conveyor belt abnormal state monitoring and alarm device, characterized in that: It includes a monitoring system, an electric control system and an alarm system, wherein the electric control system signal is connected to the monitoring system and receives an input signal from the monitoring system, and the electric control system signal is connected to the alarm system and outputs an alarm command signal to the alarm system; The monitoring system comprises: a proximity switch arranged on the back of the conveyor belt and a plurality of metal strips regularly distributed on the back of the conveyor belt, the proximity switch senses the plurality of metal strips and their relative position changes and generates the input signal, the input signal comprises: a regular signal generated when the relative positions of the plurality of metal strips are regular, and a fault signal generated when the relative positions of the plurality of metal strips change, when the input signal is a fault signal, the electric control system outputs the alarm command signal to the alarm system; The proximity switch is arranged on a proximity switch bracket, and the proximity switch bracket is fixedly connected to the conveyor belt bracket. The proximity switch has two groups and is respectively arranged on both sides of the conveyor belt. The plurality of metal strips has two groups and is respectively arranged on both sides of the conveyor belt. The plurality of metal strips on each side are parallel to each other and arranged at the same distance. The metal strips are rectangular and are buried inside the conveyor belt along the horizontal direction of the conveyor belt. The outermost end of the metal strip is directly below the proximity switch. The height of the proximity switch is 2 to 4 mm from the belt surface. The proximity switch bracket is arranged transversely on the back of the conveyor belt, the rear of the proximity switch is fixedly connected to the proximity switch bracket, the front of the proximity switch is opposite to the conveyor belt and arranged perpendicular to the metal strip, the conveyor belt bracket is arranged on both sides of the conveyor belt, and both ends of the proximity switch bracket are fixedly connected to the conveyor belt bracket; The electric control system includes: a PLC system and a communication system. The PLC system receives the input signal of the monitoring system and outputs the alarm command signal to the alarm system. The PLC system is also connected to a communication module to transmit the information of the above-mentioned PLC system to the production and manufacturing system.

2. A conveyor belt abnormal state monitoring and alarm device as claimed in claim 1, characterized in that: The two groups of input signals sensed by the proximity switches include: two groups of regular signals, one group of regular signals and one group of fault signals, and two groups of fault signals.

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