CN216234349U - Belt Conveyor Automatic Adjustment and Protection Execution Device - Google Patents

Abstract

The utility model discloses a fully automatic adjustment and protection execution device for a belt conveyor. The main support frames on both sides of the conveyor are provided with long chute, the conveying idler is installed in the long chute, and can move along the long chute. The chute slides, and an adjustment and protection executive device is installed at each of the two long chutes. The adjustment and protection executive device includes a main bracket, an electric telescopic push rod, a roller support sleeve, a tensioning pressure sensor and a PLC. controller. The utility model controls and executes actions such as belt tensioning and deviation through PLC, and can automatically adjust the tension of the belt. When the machine stops, the belt can be loosened to protect the belt. At the same time, when the belt is deviated , It can automatically correct the deviation of the belt, realize the automatic adjustment of the belt fault, and protect the belt.

Description

Belt Conveyor Automatic Adjustment and Protection Execution Device

technical field

The utility model relates to the technical field of tobacco production and processing, in particular to a fully automatic adjustment and protection execution device of a belt conveyor.

Background technique

The large number of belt conveyors originally used require maintenance personnel to check the belt deviation of the belt conveyor frequently during the operation process. The conveyor with deviation needs to be repeatedly adjusted to the belt, and the effect of this process is slow to improve for a long time; and , If the conveyor with deviation has not been detected manually, the friction between the belt and the support frame and unforeseen components will directly cause damage to the belt and components, and the motor power will easily rise to the over-limit peak value. In addition, manual adjustment is only a rough photosensitive judgment of belt tension, and excessive tension often causes belt tearing, wear of idler bearings and metal tracks, and increased motor power consumption.

It is extremely difficult for the existing belt conveying equipment to achieve the potential failure of the point-to-point human-machine monitoring equipment in the production line, which requires the installation of reliable monitoring devices in the equipment to provide real-time personnel observation data to judge the equipment status. For the conveyor failure of the production line, it is easy to bring serious quality accidents to the quality control of the production batch. Therefore, it is very necessary to upgrade the function and optimize the performance of automatic adjustment and monitoring of belt conveyor equipment.

SUMMARY OF THE INVENTION

In view of the problems existing in the background technology, the utility model proposes a belt conveyor automatic adjustment and protection executive device, which can automatically adjust the tension of the belt, automatically correct the deviation of the belt, and realize the automatic adjustment of belt faults. , to protect the belt.

To achieve the above object, the utility model adopts the following technical solutions:

The belt conveyor is fully automatic adjusting and protecting the execution device. The main support frame on both sides of the conveyor is provided with a long chute, and the conveying roller is installed in the long chute and can slide along the long chute. An adjustment and protection executive device is installed at each long chute. The adjustment and protection executive device includes a main bracket, an electric telescopic push rod, a roller support sleeve, a tension pressure sensor, a PLC controller, and a display device. And sound and light alarm, the main bracket is fixed at the end of the long chute, the main bracket is installed with an electric telescopic push rod, the end of the piston rod of the electric telescopic push rod is connected with a roller support sleeve, and the roller support sleeve It is sleeved on the end of the conveying idler, and a tension pressure sensor is installed at the connection between the end of the piston rod of the electric telescopic push rod and the roller support sleeve. The display device and the sound and light alarm are arranged in the operation station of the operation workshop. The tensioning pressure sensor, the electric telescopic push rod, the display device and the sound and light alarm are all electrically connected with the PLC controller.

Further, the fully automatic adjustment and protection execution device of the belt conveyor also includes a belt surface contact roller, the belt surface contact roller is installed on the main bracket through the wheel shaft, and is located under the belt, and the wheel shaft is installed with a belt surface for detecting the height of the belt surface. The proximity switch is electrically connected with the PLC controller.

Further, the belt-surface contact roller is made of soft wear-resistant material.

Further, the fully automatic adjustment and protection execution device for the belt conveyor also includes a belt edge detection board, the belt edge detection board is installed on the main bracket through a support shaft, and is located between the inner side of the main bracket and the belt edge, the The main bracket of the utility model is fixed with a micro switch for detecting whether the belt edge detection board rotates, and the micro switch is electrically connected with the PLC controller.

Further, a reset torsion spring for adjusting the automatic reset of the belt edge detection plate is connected between the belt edge detection plate and the support shaft. One end of the reset torsion spring is fixedly connected to the support shaft, and the other end of the belt edge detection plate is fixedly connected.

The beneficial effects of the present utility model:

The utility model controls and executes actions such as belt tensioning and deviation through PLC, and can automatically adjust the tension of the belt. When the machine is stopped, the belt can be loosened to protect the belt. At the same time, when the belt is deviated , It can automatically correct the deviation of the belt, realize the automatic adjustment of the belt fault, and protect the belt.

Description of drawings

Fig. 1 is the installation schematic diagram of the present invention;

Fig. 2 is the partial installation schematic diagram of the present invention;

Fig. 3 is the structural representation of the present invention;

4 is a schematic diagram of the installation structure of the belt edge detection board of the present invention;

Fig. 5 is the control block diagram of the present invention;

FIG. 6 is a circuit diagram of the present invention.

In the picture: 1- main support frame, 2- long chute, 3- conveying roller, 4- main bracket, 5- electric telescopic push rod, 6- roller support sleeve, 7- tension pressure sensor, 8- PLC controller, 9-belt contact roller, 10-proximity switch, 11-belt edge detection board, 12-support shaft, 13-micro switch, 14-return torsion spring, 15-display device, 16-sound and light alarm device.

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of the skilled person.

As shown in Figure 1-6, the belt conveyor is fully automatic adjusting and protecting the execution device. The main support frame 1 on both sides of the conveyor is provided with a long chute 2, and the conveying rollers 3 are installed in the long chute. 2, and can slide along the long chute 2, and each of the two long chute 2 is equipped with an adjustment and protection executive device, and the position of the conveying idler 3 is adjusted through the protection and execution device. The adjustment and protection execution device includes a main bracket 4, an electric telescopic push rod 5, a roller support sleeve 6, a tension pressure sensor 7 and a PLC controller 8, and the main bracket 4 is fixed on the long chute 2. At the end, the main support frame is made of iron metal plate with a thickness of 5mm, with a total length of 180mm and a total width of 100mm. There are four 10mm fixing bolt holes, which are connected and fixed with the column support frame through bolt connection. An electric telescopic push rod 5 is installed, the limit working length of the electric push rod is 360mm, the shortest working limit length is 210mm, and the working stroke is about 150mm. The end of the piston rod of the electric telescopic push rod 5 is connected with a roller support sleeve 6. The shaft support sleeve 6 is sleeved on the end of the conveying idler 3, and the tension pressure sensor 7 is installed at the connection between the end of the piston rod of the electric telescopic push rod 5 and the roller support sleeve 6, and the range selection is Max=500-800N , that is, between 49-78.4Kg, the tensioning pressure sensor 7 and the electric telescopic push rod 5 are both electrically connected with the PLC controller 8 . The PLC controller 8 records the belt tension force under the production state of the normal use of the belt conveyor, which is used as the working setting range value of the two sets of adjustment and protection execution devices in the automatic production mode. This embodiment It is preferable that the fixed value of the target control setting is X, then the tension force when the belt is tensioned should be kept within the range of X±14.7N, that is, X±14.7N is the working setting range value. When the tensioning pressure sensor is in the automatic production mode When the detection result of 7 deviates from the above-mentioned working set range value, the PLC controller 8 will adjust the push-out length of the electric telescopic push rod 5 according to the detection result, so as to ensure that the tension force of the belt is within the working set range value. Use tension protection to prevent the belt from being too tight or too loose. The PLC controller 8 also presets the initial value of the belt tension when the machine stops. When the machine stops, the PLC controller 8 sends a signal to control the action of the electric telescopic push rods 5 of the two sets of devices, so that the belt tension reaches the belt tension when the machine stops. The initial value, that is, the belt slack protection when the conveyor is stopped and standby. As a preferred solution of this embodiment, a display device 15 is also provided on the operating station, the display device 15 is electrically connected to the PLC controller 8, and the display device 15 is used to display various states and results of the PLC controller 8 in the control process; at the same time, The device is also equipped with an audible and visual alarm 16, which is connected to the PLC controller 8 for cooperating with the display device 15 to alarm the device failure.

The fully automatic adjustment and protection execution device of the belt conveyor also includes a belt surface contact roller 9, which is installed on the main bracket 4 through the axle and is located below the belt. The belt surface contact roller 9 is made of soft material. Made of wear-resistant material, the belt surface contacts the roller 9 for supporting the belt, and a proximity switch 10 for detecting the height of the belt surface is installed on the wheel shaft. The tensioning pressure sensor 7 performs signal detection to realize two different detection signals to ensure that the signal input to the PLC controller 8 is accurate.

The functions of PLC controller 8 in manual mode are:

Manually start the conveyor: After the belt is started with the motor, the electric telescopic push rod 5 is tensioned to the belt and gradually reaches the working set range value. During this process, the belt is not tensioned to the preset height. The output of the proximity switch 10 is "1", and the equipment alarms Prompt but will not stop, continue to tension the belt until the belt is tensioned to the set height, the tension pressure sensor 7 detects that the pressure reaches the working set range value, the output of the proximity switch 10 is "0", the electric telescopic push rod 5 stop action.

Manually stop the conveyor: This process must be carried out after the belt is completely stopped, the detection signal is output by the proximity switch 10 as "0", the electric telescopic push rod 5 is retracted, and the tight belt is loosened during production, and the output of the proximity switch 10 is "1", until the tension pressure sensor 7 detects that the pressure reaches the initial value of belt tension when the machine stops, and when it reaches the set tension height, the electric telescopic push rod 5 stops to protect the belt from slack.

The functions of PLC controller 8 in automatic mode are:

The automatic chain start command is triggered, and the electric telescopic push rod 5 pre-tensions the belt to the working setting range of X±14.7N when the belt is tensioned. During this process, the belt and motor are only started and stopped by the production control command; automatic shutdown--- After the production stop state command is triggered and the belt is at a complete stop, the output of the proximity switch 10 is "0", and the electric telescopic push rod 5 shrinks until the pressure detected by the tension pressure sensor 7 reaches the initial value of the belt tension at the time of shutdown and reaches the setting When the tension is high, the output of the proximity switch 10 is "1", and the electric telescopic push rod 5 stops to protect the belt from slack.

The fully automatic adjustment and protection execution device for the belt conveyor also includes a belt edge detection board 11. The belt edge detection board 11 is installed on the main bracket 4 through the support shaft 12, and is located between the inner side of the main bracket 4 and the belt edge. , the length is 90mm, the width is 105mm and the height is 60mm, and it is cut from a 3mm thick iron metal plate. One end of the return torsion spring 14 is fixedly connected to the support shaft 12, and the other end is fixedly connected to the belt edge detection plate 11. When the belt is deviated, the belt edge contacts the belt edge detection plate 11, so that the belt edge detection plate 11 rotates. When the belt is corrected , the belt edge is separated from the belt edge detection plate 11, and under the torsion force of the reset torsion spring 14, the belt edge detection plate 11 can automatically reset. The main support 4 is fixed with a micro switch 13 for detecting whether the belt edge detection plate 11 rotates, and the micro switch 13 is electrically connected with the PLC controller 8 .

Start the conveyor in manual or automatic mode, and the electric telescopic push rod 5 tensions the belt gradually to reach the working set range value. During this process, if the belt is offset, the edge of the belt contacts the belt edge detection board 11, so that the belt edge detection board 11 rotates, triggering the signal output of the micro switch 13 to be "1", that is, the PLC controller 8 starts to execute the belt correction steps:

The left device triggers the belt deviation signal, the signal output of the left micro switch 13 is "1", the left electric push rod pushes out for 0.5s, the tension increases, and the right electric telescopic push rod 5 synchronizes for 0.5s When retracted, the tension force is reduced, and the same action is repeated after 2s interval. During the correction process, if the tension force in the left device reaches the upper limit value of the belt tensioning work setting value during equipment production (that is, this implementation X+14.7N in the example), the electric telescopic push rods 5 on both sides retract at the same time for 0.5s, the tension is reduced, and the same action is repeated after an interval of 1s, so that the tension is reduced to the belt tension during equipment production. After the lower limit value of the set range value (that is, X-14.7N in this embodiment), the correction action is carried out until the belt deviation signal disappears, the signal output of the micro switch 13 is "0", and the belt deviation is ended. Correction.

Similarly, when the right device triggers the belt deviation signal, the operation process is the opposite of the above. In this way, it can be ensured that the tension force of the conveyor belt can be controlled within a reasonable range, and the front and rear tension force can be adjusted within a reasonable range, and the left and right deviation of the belt can be quickly and effectively corrected.

The control unit fails to stop in automatic mode:

Tension working state:

In the linkage mode of the automatic production line, the PLC controller 8 is associated with the upstream equipment of the assembly line. If the tension force increases greatly during the operation of the conveyor, and the electric telescopic push rod 5 returns to the minimum working stroke, at the same time, the proximity switch 10 is always output. The running detection signal indicates that the conveying equipment may be blocked by materials. After a 10s delay in this state on either side of the devices on both sides, the linkage shutdown signal command will be triggered, the equipment will immediately stop and trigger the "material blocking alarm prompt" of the associated equipment. In the stand-alone state, the above situation only stops its own drive motor and triggers an alarm. If the tension is greatly increased during the operation of the conveyor, and the electric telescopic push rod 5 returns to the minimum working stroke, at the same time, the proximity switch 10 always outputs a running detection signal, and the detection signal of the proximity switch 10 is "0", This means that the conveying equipment may have material blockage or other types of serious faults. After a 5s delay in this state on either side of the devices on both sides, the linkage shutdown signal command will be triggered, the equipment will immediately stop and trigger the "material blockage alarm prompt" of the associated equipment. In the stand-alone state, the above situation only stops its own drive motor and triggers an alarm.

In the process of automatic production operation, the tensioning process is preset with two tensioning times. In this implementation, the two tensioning times are respectively 120s and 300s. If the tensioning force cannot reach the minimum working design after the 120s timer expires When the setting value is set, the display device 15 of the operation station displays the fault status as: "Insufficient tension of the conveyor!", then the conveyor continues to run, and when the tension force still cannot reach the minimum working set value after the 300s timer expires, it means that The device is faulty, and the associated upstream equipment of the assembly line is stopped by linkage, and the display device 15 on the operation station is displayed as: "The conveyor tensioning mechanism is faulty!". In the stand-alone state, the above situation only stops its own drive motor and triggers an alarm.

Belt deviation status:

In the process of automatic production operation, the belt correction process is also preset with two correction times. In this implementation, the two correction times are respectively 120s and 300s. If there is deviation on either side of the belt, the belt deviation signal will be triggered. Execution of the trimming process starts, and the display device 15 displays "Offset trimming status!". If the belt deviation signal cannot be eliminated after the 120s timer expires during the correction process, that is, the equipment is in an abnormal state, and the display on the operation station is: "Conveyor belt correction abnormal!", continue to perform the belt deviation correction, and run after the 300s timer expires. The deviation signal still cannot be eliminated, that is, the belt deviation of the equipment fails to be repaired, and the upstream equipment of the associated assembly line is linked to stop, and it is displayed on the operation station as "Conveyor deviation repair failure, equipment failure and shutdown!". In the stand-alone state, the above situation only stops its own drive motor and triggers an alarm.

The invention controls and executes actions such as belt tensioning and deviation through PLC, and can automatically adjust the tension of the belt. When the machine is stopped, the belt can be loosened to protect the belt. At the same time, when the belt is deviated, It can automatically correct the deviation of the belt, realize the automatic adjustment of the belt fault, and protect the belt.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should Various changes may be made in details without departing from the scope of the invention as defined by the claims.

Claims (5)

1. The automatic adjustment and protection execution device of the belt conveyor is characterized in that: the main support frame on both sides of the conveyor is provided with a long chute, and the conveying idler is installed in the long chute, and can be installed along the long chute. The long chute slides, and an adjustment and protection executive device is installed at each of the two long chutes. The adjustment and protection executive device includes a main bracket, an electric telescopic push rod, a roller support sleeve, a tensioning pressure sensor, PLC controller, display equipment and sound and light alarm, the main bracket is fixed at the end of the long chute, the main bracket is installed with an electric telescopic push rod, and the end of the piston rod of the electric telescopic push rod is connected with a roller support sleeve , the roller support sleeve is sleeved on the end of the conveying idler, and a tension pressure sensor is installed at the connection between the end of the piston rod of the electric telescopic push rod and the roller support sleeve, and the display device and the sound and light alarm are arranged in In the operation station of the operation workshop, the tensioning pressure sensor, the electric telescopic push rod, the display device and the sound and light alarm are all electrically connected with the PLC controller. 2. The fully automatic adjustment and protection execution device of the belt conveyor according to claim 1, characterized in that: the fully automatic adjustment and protection execution device of the belt conveyor further comprises a belt surface contact roller, and the belt surface The contact roller is installed on the main support through the axle, and is located under the belt. The axle is installed with a proximity switch for detecting the height of the belt surface, and the proximity switch is electrically connected with the PLC controller. 3 . The fully automatic adjustment and protection execution device for a belt conveyor according to claim 2 , wherein the belt surface contact roller is made of soft wear-resistant material. 4 . 4. The fully automatic adjustment and protection execution device for a belt conveyor according to any one of claims 1 to 3, wherein the fully automatic adjustment and protection execution device for the belt conveyor further comprises a belt edge The detection board, the belt edge detection board is installed on the main bracket through the support shaft, and is located between the inner side of the main bracket and the belt edge, the main bracket is fixed with a micro switch for detecting whether the belt edge detection board rotates, the micro switch The switch is electrically connected with the PLC controller. 5. The fully automatic adjustment and protection execution device for a belt conveyor according to claim 4, wherein a reset for adjusting the automatic reset of the belt edge detection plate is connected between the belt edge detection plate and the support shaft One end of the reset torsion spring is fixedly connected with the support shaft, and the other end is fixedly connected with the belt edge detection board.

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