阅读说明：本技术 一种防止输送带跑偏的智能控制装置及控制方法 (Intelligent control device and control method for preventing conveying belt from deviating ) 是由 李明 于 2021-02-05 设计创作，主要内容包括：本发明涉及一种防止输送带跑偏的智能控制装置及控制方法,下托梁固定在输送机架上,轴承组与下托梁连接,摆动托架与旋转轴焊接连接后插入轴承组中紧固,旋转轴末端安装齿轮并固定,伺服电机轴头装有齿轮,旋转轴末端齿轮与伺服电机轴头齿轮相对齿啮合,驱动器安放下托梁上面,两个超声波测距传感器分别安装在摆动托架两端；三支辊筒形成辊筒组,输送带在辊筒组上运行,辊筒支撑座与摆动托架连接,三支辊筒与辊筒支撑座连接；PLC分别与驱动器、两个超声波测距传感器电连接,驱动器与伺服电机电连接,本发明具有智能化无接触检测跑偏量,对输送带边缘不磨损,智能化匹配纠偏量,可靠性高,无需维护等特点。(The invention relates to an intelligent control device and a control method for preventing a conveying belt from deviating, wherein a lower supporting beam is fixed on a conveying rack, a bearing group is connected with the lower supporting beam, a swinging bracket is welded and connected with a rotating shaft and then inserted into the bearing group for fastening, a gear is arranged at the tail end of the rotating shaft and fixed, a shaft head of a servo motor is provided with a gear, the gear at the tail end of the rotating shaft is meshed with opposite teeth of a gear at the head of the servo motor, a driver is arranged on the lower supporting beam, and two ultrasonic ranging sensors are respectively arranged at two ends; three rollers form a roller set, a conveyer belt runs on the roller set, a roller supporting seat is connected with a swing bracket, and the three rollers are connected with the roller supporting seat; the PLC is respectively and electrically connected with the driver and the two ultrasonic ranging sensors, and the driver is electrically connected with the servo motor.)

1. The utility model provides a prevent intelligent control device of conveyer belt off tracking which characterized in that: the device comprises a PLC, a servo motor, a driver, two ultrasonic ranging sensors, three rollers, a swing bracket, a roller supporting seat, a lower joist, a rotating shaft, a gear set and two safety limiting devices; the lower supporting beam is fixed on the conveying rack, the bearing group is connected with the lower supporting beam, the swinging bracket is welded with the rotating shaft and then inserted into the bearing group for fastening, the tail end of the rotating shaft is provided with a gear and fixed, the servo motor is horizontally arranged below the lower supporting beam, the shaft head of the servo motor is provided with a gear, the tail end gear of the rotating shaft is meshed with the opposite teeth of the gear at the head of the servo motor, the driver is arranged above the lower supporting beam, the PLC is arranged above the lower supporting beam, and the two ultrasonic ranging sensors are respectively arranged at two ends of; the three rollers form a roller set, the conveyer belt runs on the roller set, the roller supporting seat is connected with the swing bracket, the three rollers are connected with the roller supporting seat, the three rollers, the roller supporting seat and the swing bracket form a whole, and when the swing bracket swings, the roller set swings along with the three rollers; the two safety limiting devices are respectively fixed on two sides of the lower joist, and the safety limiting devices are used for preventing the swinging amplitude of the swinging bracket from being limited when the PLC, the servo motor and the driver are in failure, so that the swinging bracket is prevented from damaging the conveying belt, and the conveying belt cannot normally work; the PLC is respectively electrically connected with the driver and the two ultrasonic ranging sensors, and the driver is electrically connected with the servo motor.

2. The intelligent control device for preventing the deviation of the conveying belt as claimed in claim 1, wherein: the swing bracket is made of channel steel after bending at two ends 2/3, the roller supporting seat is bolted with the channel steel, and the distance between the roller and the swing bracket is set to be 48-52 mm.

3. The intelligent control device for preventing the deviation of the conveying belt as claimed in claim 1, wherein: the safety limiting device comprises an L-shaped stop lever, a bottom plate, a spring and a baffle, wherein the bottom of the L-shaped stop lever is fixed on the side face of the lower supporting beam, the bottom plate is fixed on the upper portion of the L-shaped stop lever, the spring is fixed with the bottom plate, and the baffle is fixed with the spring.

4. The control method of the intelligent control device for preventing the deviation of the conveying belt according to claim 1 is characterized by comprising the following steps of:

1) when the conveyer belt deviates to one side, when the ultrasonic distance measuring sensor at one end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate in the forward direction, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects in the forward direction, the roller set and the conveyer belt are displaced in the forward direction from the original vertical angle, an included angle is formed between the displaced angle and the original vertical angle, the included angle generates a transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, and after the PLC processing, a closing instruction is sent to the driver, the servo motor is closed by the driver, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle.

2) When the conveyer belt deviates to the other side, when the ultrasonic distance measuring sensor at the other end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate reversely, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects reversely, the roller set and the conveyer belt generate reverse displacement from the original vertical angle, an included angle is formed by the displaced angle and the original vertical angle, the included angle generates transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, the distance measuring signal of the, and after the PLC processing, a closing instruction is sent to the driver, the servo motor is closed by the driver, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle.

Technical Field

The invention relates to a conveying belt, in particular to an intelligent control device and a control method for preventing the conveying belt from deviating.

Background

The conveyer belt is widely applied to bulk cargo transportation of various factories and mines, and usually has a certain deviation phenomenon caused by various factors. Such as: the belt joint is not correctly jointed, the frame is not correct, the roller is stuck with materials, the carrier roller is not flexible to run, and the like. Aiming at the belt deviation condition, the belt deviation is mainly controlled by a mechanical aligning carrier roller or a hydraulic deviation correcting carrier roller at present. The mechanical aligning carrier roller is used to push the vertical rollers at two sides of the conveyer belt to block the edge of the conveyer belt so as to control the deviation. The hydraulic deviation-rectifying carrier roller drives the oil pump to rotate by the edge friction of the conveyer belt, and the purpose of controlling deviation is achieved by pushing and pulling the oil cylinder. Both modes act on the edge of the conveying belt, and the edge of the conveying belt can crack over time, so that the normal service life of the conveying belt is influenced. Meanwhile, the two modes for correcting the deviation of the conveying belt have the problems of insufficient or excessive deviation correction, and the deviation of the conveying belt cannot be accurately calculated.

Disclosure of Invention

The invention aims to provide an intelligent control device and a control method for preventing a conveying belt from deviating, and the product has the characteristics of intelligent non-contact detection of deviation, no abrasion to the edge of the conveying belt, intelligent matching deviation correction, high reliability, no need of maintenance and the like.

In order to achieve the purpose, the invention has the following technical scheme:

the invention discloses an intelligent control device for preventing a conveying belt from deviating, which comprises a PLC (programmable logic controller), a servo motor, a driver, two ultrasonic ranging sensors, three rollers, a swing bracket, a roller supporting seat, a lower joist, a rotating shaft, a gear set and two safety limiting devices, wherein the three rollers are arranged on the lower joist; the lower supporting beam is fixed on the conveying rack, the bearing group is connected with the lower supporting beam, the swinging bracket is welded with the rotating shaft and then inserted into the bearing group for fastening, the tail end of the rotating shaft is provided with a gear and fixed, the servo motor is horizontally arranged below the lower supporting beam, the shaft head of the servo motor is provided with a gear, the tail end gear of the rotating shaft is meshed with the opposite teeth of the gear at the head of the servo motor, the driver is arranged above the lower supporting beam, the PLC is arranged above the lower supporting beam, and the two ultrasonic ranging sensors are respectively arranged at two ends of; the three rollers form a roller set, the conveyer belt runs on the roller set, the roller supporting seat is connected with the swing bracket, the three rollers are connected with the roller supporting seat, the three rollers, the roller supporting seat and the swing bracket form a whole, and when the swing bracket swings, the roller set swings along with the three rollers; the two safety limiting devices are respectively fixed on two sides of the lower joist, and the safety limiting devices are used for preventing the swinging amplitude of the swinging bracket from being limited when the PLC, the servo motor and the driver are in failure, so that the swinging bracket is prevented from damaging the conveying belt, and the conveying belt cannot normally work; the PLC is respectively electrically connected with the driver and the two ultrasonic ranging sensors, and the driver is electrically connected with the servo motor.

The roller support seat is bolted with the channel steel, the distance between the roller and the swing bracket is set to be 48-52mm, and the distance can prevent slag from falling from the conveying belt to clamp the conveying belt and can be convenient for maintenance.

The safety limiting device comprises an L-shaped stop lever, a bottom plate, a spring and a baffle, wherein the bottom of the L-shaped stop lever is fixed on the side face of the lower supporting beam, the bottom plate is fixed on the upper portion of the L-shaped stop lever, the spring is fixed with the bottom plate, and the baffle is fixed with the spring.

The invention discloses a control method of an intelligent control device for preventing a conveying belt from deviating, which is characterized by comprising the following steps of:

1) when the conveyer belt deviates to one side, when the ultrasonic distance measuring sensor at one end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate in the forward direction, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects in the forward direction, the roller set and the conveyer belt are displaced in the forward direction from the original vertical angle, an included angle is formed between the displaced angle and the original vertical angle, the included angle generates a transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, and after the PLC processing, a closing instruction is sent to the driver, the servo motor is closed by the driver, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle.

2) When the conveyer belt deviates to the other side, when the ultrasonic distance measuring sensor at the other end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate reversely, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects reversely, the roller set and the conveyer belt generate reverse displacement from the original vertical angle, an included angle is formed by the displaced angle and the original vertical angle, the included angle generates transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, the distance measuring signal of the, and after the PLC processing, a closing instruction is sent to the driver, the servo motor is closed by the driver, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle.

Due to the adoption of the technical scheme, the invention has the advantages that:

1. the deviation amount is detected without contact, the edge of the conveying belt is subjected to zero abrasion, and the service life of the conveying belt is prolonged.

2. The ultrasonic ranging sensor is adopted to detect the deviation of the conveying belt, so that the deviation can be read more accurately, a post worker can record the deviation conveniently, and problems can be found timely.

3. The correction force can be reasonably and accurately distributed, and the problem of insufficient correction or excessive correction is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a cross-sectional view of the lower joist of fig. 1 in the direction a-a.

In the figure, 1, an intelligent controller is composed of a PLC; 2. a servo motor; 3. a driver; 4. an ultrasonic ranging sensor; 5. three rollers; 6. a swing bracket; 7. a roller supporting seat; 8. a lower joist; 9. a rotating shaft; 10. a gear set; 11. a conveyor belt; 12. an ultrasonic ranging sensor support; 13. a conveyor frame; 14. a bearing set; 15. a power line; 16. an L-shaped stop lever; 17. a base plate; 18. a spring; 19. and a baffle plate.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The invention discloses an intelligent control device for preventing a conveying belt from deviating, which comprises a PLC (programmable logic controller), a servo motor, a driver, two ultrasonic ranging sensors, three rollers, a swing bracket, a roller supporting seat, a lower joist, a rotating shaft, a gear set and two safety limiting devices, wherein the three rollers are arranged on the lower joist; the lower supporting beam is fixed on the conveying rack, the bearing group is connected with the lower supporting beam, the swinging bracket is welded with the rotating shaft and then inserted into the bearing group for fastening, the tail end of the rotating shaft is provided with a gear and fixed, the servo motor is horizontally arranged below the lower supporting beam, the shaft head of the servo motor is provided with a gear, the tail end gear of the rotating shaft is meshed with the opposite teeth of the gear at the head of the servo motor, the driver is arranged above the lower supporting beam, the PLC is arranged above the lower supporting beam, and the two ultrasonic ranging sensors are respectively arranged at two ends of; the three rollers form a roller set, the conveyer belt runs on the roller set, the roller supporting seat is connected with the swing bracket, the three rollers are connected with the roller supporting seat, the three rollers, the roller supporting seat and the swing bracket form a whole, and when the swing bracket swings, the roller set swings along with the three rollers; the two safety limiting devices are respectively fixed on two sides of the lower joist, and the safety limiting devices are used for preventing the swinging amplitude of the swinging bracket from being limited when the PLC, the servo motor and the driver are in failure, so that the swinging bracket is prevented from damaging the conveying belt, and the conveying belt cannot normally work; the PLC is respectively electrically connected with the driver and the two ultrasonic ranging sensors, and the driver is electrically connected with the servo motor.

The swing bracket is made by bending channel steel at the positions of 2/3 at two ends, the swing bracket formed after bending can protect the roller set and can ensure that the swing bracket and the roller set form a whole and then have certain torsional strength, the roller supporting seat is bolted with the channel steel, the distance between the roller and the swing bracket is set to be 48-52mm, and the distance can prevent slag from falling from the conveyor belt to clamp the conveyor belt and can be maintained conveniently.

The safety limiting device comprises an L-shaped stop lever, a bottom plate, a spring and a baffle, wherein the bottom of the L-shaped stop lever is fixed on the side face of the lower supporting beam, the bottom plate is fixed on the upper portion of the L-shaped stop lever, the spring is fixed with the bottom plate, and the baffle is fixed with the spring.

The invention discloses a control method of an intelligent control device for preventing a conveying belt from deviating, which is characterized by comprising the following steps of:

1) when the conveyer belt deviates to one side, when the ultrasonic distance measuring sensor at one end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate in the forward direction, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects in the forward direction, the roller set and the conveyer belt are displaced in the forward direction from the original vertical angle, an included angle is formed between the displaced angle and the original vertical angle, the included angle generates a transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, and after the PLC processing, a closing instruction is sent to the driver, the servo motor is closed by the driver, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle.

2) When the conveyer belt deviates to the other side, when the ultrasonic distance measuring sensor at the other end of the swing bracket detects that the distance between the edge of the conveyer belt and the ultrasonic distance measuring sensor is less than a set value, the distance measuring signal of the ultrasonic distance measuring sensor is transmitted to the PLC, the PLC processes the distance and sends an opening instruction to the driver, the driver starts the servo motor to rotate reversely, the servo motor enables the swing bracket to swing through gear transmission, the roller set on the swing bracket deflects reversely, the roller set and the conveyer belt generate reverse displacement from the original vertical angle, an included angle is formed by the displaced angle and the original vertical angle, the included angle generates transverse reset force on the conveyer belt, the conveyer belt starts to reset and center under the action of the transverse reset force, and when the distance between the edge of the centered conveyer belt and the ultrasonic distance measuring sensor is equal to the set value, the distance measuring signal of the, after the PLC processing, a closing instruction is sent to the driver, the driver closes the servo motor, at the moment, the transverse reset force generated by the roller group on the conveying belt is equal to the external deviation acting force of the conveying belt, and the conveying belt normally runs in the middle;

in order to prevent the PLC, the servo motor and the driver from being out of order, the swing amplitude of the swing bracket can be limited, so that the conveyer belt is prevented from being damaged by the swing bracket and cannot work normally; two safety limiting devices are respectively arranged on two sides of the lower joist; when the PLC, the servo motor and the driver have faults and the swing bracket exceeds the set swing amplitude, the safety limiting device can block the swing bracket from swinging continuously; and be equipped with baffle and spring on insurance stop device, when the swing bracket runs into insurance stop device, can not hit hard, but the flexible stop position, can avoid mechanical damage.

PLC: the manufacturer: siemens, type: s7-300;

servo motor and driver: super synchronous science and technology of Beijing, model: Z18-40P 7;

ultrasonic ranging sensor: shenzhen electricity joining technology, model: DJLK-CB-001.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.