CN-121974091-A - Intelligent apron board adjusting device and method of conveyor

CN121974091ACN 121974091 ACN121974091 ACN 121974091ACN-121974091-A

Abstract

The invention discloses an intelligent apron board adjusting device and method of a conveyor, wherein the device comprises a mounting bracket, a guide chute, an apron board assembly and a driving assembly, the flexible connecting pieces are connected between the driving assembly and the apron board assembly, and the pressure sensor is packaged in the flexible connecting pieces. The elastic body of the flexible connecting piece is not only used for transmitting the adjusting driving force output by the driving component, but also can deform based on the reaction force of the belt, so that the apron board component can generate passive self-adaptive following to the dynamic deformation of the belt, and meanwhile, a high-fidelity pressure signal for filtering vibration interference is provided for the sensor. The invention solves the problems that the sensor signal is easy to be disturbed, the service life is short and the skirt board cannot be dynamically and adaptively adjusted in the prior art by the unique flexible sensing and force transmission integrated design, and realizes the stable, accurate and self-adaptive adjustment of the sealing and compressing force of the skirt board.

Inventors

LIU QIANQUAN
HUANG RONG
Zheng Yinzuan
LAI MAOXING
CHEN XI

Assignees

厦门三烨清洁科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260203

Claims (10)

1. The apron board intelligent adjusting device of the conveyor comprises a mounting bracket, a guide chute, an apron board assembly and a driving assembly, and is characterized by further comprising a plurality of flexible connecting pieces, wherein the flexible connecting pieces are connected between the driving assembly and the apron board assembly and are used for transmitting driving force output by the driving assembly and deforming based on the reaction force of a belt borne by the apron board assembly so that the apron board assembly can adaptively follow the dynamic deformation of the belt; The flexible connecting piece is internally provided with a pressure sensor used for detecting the compaction force of the apron board assembly to the conveyor belt in real time, and the signal input end of the controller is electrically connected with the pressure sensor, the signal output end of the controller is electrically connected with the driving assembly, and the controller is used for generating a control signal based on the compaction force so as to adjust the action of the driving assembly.
2. The intelligent apron board adjusting device of a conveyor according to claim 1, wherein the apron board assembly comprises a supporting seat, a plurality of apron board brackets and an apron board, the supporting seat is connected with the guide chute, the apron board brackets are hinged with the lower ends of the supporting seat, the apron board is installed on the apron board brackets, the flexible connecting piece is hinged with the apron board brackets, and when the driving assembly drives the flexible connecting piece to act, the flexible connecting piece drives the apron board brackets to swing by taking the hinge points of the apron board brackets and the supporting seat as fulcrums.
3. The intelligent apron adjustment assembly of a conveyor of claim 2, wherein the apron assembly further comprises a canvas seal having one side connected to the support base and the other side clamped between the apron frame and the apron.
4. The intelligent apron board adjusting device of the conveyor according to claim 2, wherein the driving assembly comprises a stepping motor and an adjusting mechanism driven by the stepping motor, the adjusting mechanism is hinged with one end of the flexible connecting piece, the adjusting mechanism comprises an adjusting rod and a sliding block, one end of the adjusting rod is connected with the stepping motor, and the other end of the adjusting rod is connected with the sliding block.
5. The intelligent apron board adjusting device of a conveyor according to claim 4, wherein the supporting seat is provided with a first connecting plate connected with the guide chute and a second connecting plate connected with the apron board bracket, the first connecting plate and the second connecting plate form an L-shaped structure, a plurality of groups of sliding rails are arranged below the first connecting plate, a plurality of sliding parts are arranged on the sliding blocks, and the sliding parts are matched with the sliding rails.
6. The intelligent apron board adjusting device of a conveyor according to claim 4, wherein a plurality of first hinge seats are arranged on the sliding block, second hinge seats corresponding to the first hinge seats one by one are arranged on the apron board support, and two ends of the flexible connecting piece are hinged with the corresponding first hinge seats and second hinge seats respectively.
7. The intelligent apron adjustment mechanism of a conveyor of claim 1, wherein the flexible connection comprises a body made of an elastomeric material, the pressure sensor being encapsulated within the body.
8. An intelligent apron board adjusting method of a conveyor, which is realized based on the intelligent apron board adjusting device of the conveyor according to any one of claims 1-7, and specifically comprises the following steps: Step 1, setting a pressure threshold range [ X1, X2] of normal operation of the skirt board, and setting a high pressure regulation target value X0, a low pressure regulation target value X4, an overload pressure value X3, an interference regulation value X5 and an adjustable judgment value X6, wherein X6< X5< X1< X2< X3, X1< X0< X2, and X1< X4< X2; step 2, data acquisition and fluctuation filtering type abnormality judgment; The method comprises the steps of starting a conveyor, sampling all pressure sensor data by a controller at a fixed frequency, reading a single-point instantaneous pressure value, starting fluctuation filtering instead of immediately acting when the single-point instantaneous pressure value exceeds the range of [ X1, X2 ]; If Mi is returned to [ X1, X2], the instantaneous fluctuation is judged, the event is ignored, if Mi is still out of limit, the effective abnormality is confirmed, and the step 3 is carried out to carry out pressure regulation; step 3, pressure regulation; Step 3.1, more than one abnormal point appears, and the pressure values of all abnormal points are lower than the threshold lower limit X1, and the pressure value is adjusted up by taking the low pressure adjustment target value X4 as a target; step 3.2, more than one abnormal point appears, and the pressure values of all abnormal points are higher than the upper threshold limit X2, and the pressure value is wholly adjusted downwards by taking the high-pressure adjusting target value X0 as a target; step 3.3, when more than one abnormal point appears, and the pressure value of at least one abnormal point is higher than the overload pressure value X3, the pressure value is wholly regulated by taking the upper threshold value limit X2 as a target value; and 3.4, when more than two abnormal points appear, the pressure value of at least one abnormal point is higher than the upper threshold limit X2, and the pressure value of at least one abnormal point is lower than the lower threshold limit X1, the pressure value is wholly regulated by taking the upper threshold limit X2 as a target value, and then the pressure value is wholly regulated by taking the lower threshold limit X1 as the target value.
9. The intelligent apron board adjusting method of a conveyor according to claim 8, wherein, In the step 3.1, the operation of adjusting the pressure value overall is specifically as follows: Acquiring an adjusting point pressure value Mk=Min (M1, M2, the number of the pressure sensors is equal to the number of the flexible connection pieces, and Mn), wherein n is the number of the pressure sensors, and then starting a driving assembly to boost the adjusting point pressure value Mk to a target value X4, acquiring the multi-point pressure value of the apron board in real time and judging whether a certain point pressure value reaches a threshold upper limit X2 in the boosting process; If the pressure value of a certain point in the adjusting process reaches the upper threshold value X2, stopping reducing the pressure, judging whether the pressure values of all points are within the pressure threshold value range, if so, ending the adjusting, otherwise, judging that the apron board is abnormal, and alarming; Judging whether Max (M1, M2, and the number of the pressure points is equal to or greater than X2-a or not after the pressurization is finished if the pressure values of all the pressure points in the regulation process are within the pressure threshold range, and finishing the regulation after b pressure points are finely adjusted and reduced if the pressure values are equal to or greater than X2-a; in the step 3.2, the operation of integrally adjusting the pressure value downwards is specifically as follows: Acquiring an adjusting point pressure value Mk=Max (M1, M2, the number of the adjusting points is the number of the adjusting points, mn), then starting a driving assembly to decompress the adjusting point pressure value Mk to a target value X0, acquiring the multipoint pressure value of the apron board in real time in the decompression process, and judging whether a certain point pressure value reaches a threshold lower limit X1; If the pressure value of a certain point in the adjusting process reaches the lower threshold value X1, stopping reducing the pressure, judging whether the pressure values of all points are within the pressure threshold value range, if so, ending the adjusting, otherwise, judging that the apron board is abnormal, and carrying out material interference treatment; In the step 3.3, the operation of integrally adjusting the pressure value is specifically as follows: acquiring an adjustment point pressure value Mk=Max (M1, M2, and Mn), and then starting the driving assembly to reduce the adjustment point pressure value Mk to a threshold upper limit X2; after the decompression is finished, judging whether all the point pressure values are within a threshold range, if Min (M1, M2, the.. The Mn) is smaller than a threshold lower limit, judging that the apron board is abnormal, and alarming, otherwise, continuing to decompress the regulating point pressure value to a target value X0, and processing according to the whole downward pressure value regulating operation flow of the step 3.2; the operation of the step 3.4 is specifically as follows: acquiring an adjustment point pressure value mk=max (M1, M2,) and then starting the drive assembly to decompress the adjustment point pressure value Mk to an upper threshold limit X2; After the decompression is finished, judging whether Min (M1, M2, mn) is smaller than an adjustable judging value X6, if so, judging that the apron board has a problem, and alarming, otherwise, acquiring an adjusting point pressure value Mk=Min (M1, M2, mn), and starting a driving assembly to pressurize the adjusting point pressure value Mk to a lower threshold value X1; Then determining whether Max (M1, M2, mn) is above the upper threshold X2, if not, completing the adjustment, determining that there is a risk, and keeping a record, otherwise, obtaining an adjustment point pressure value mk=max (M1, M2, mn), then starting the drive assembly to decompress the adjustment point pressure value Mk to the upper threshold X2, after the decompression is completed, determining that there is a problem with the skirt plate, and alarming.
10. The intelligent apron board adjusting method of a conveyor according to claim 9, wherein in the step 3.2, the material interference treatment is specifically as follows: Acquiring an adjusting point pressure value Mk=Min (M1, M2, the number of the adjusting points is the number of the adjusting points, mn), then starting a driving assembly to decompress the adjusting point pressure value Mk to an interference adjusting value X5, stopping for c seconds, pressurizing again to a threshold lower limit X1, and after pressurizing, finishing the adjusting if all the point pressure values are within the threshold range, judging that the apron board has a problem if the pressure value of a certain point is higher than the threshold upper limit X2, and alarming; if all the pressure values of all the points in the adjusting process are within the pressure threshold range, judging whether Min (M1, M2,) and Mn are close to the lower threshold limit (namely, whether Min (M1, M2,) and Mn is smaller than or equal to X1 +a) after the pressure reduction is finished, if so, performing fine adjustment to increase b pressure points, and finishing the adjusting, and if not, finishing the adjusting.

Description

Intelligent apron board adjusting device and method of conveyor Technical Field The invention relates to the field of conveyors, in particular to an intelligent apron board adjusting device and method of a conveyor. Background The belt conveyor is core equipment for continuously conveying bulk materials in industrial production, and the sealing performance of a guide chute is directly related to material loss, dust pollution control and cleaning and safety of an operation environment. In a guide chute system, apron boards are used as key sealing elements and are arranged at the edges of two sides of a chute body, and a dynamic sealing interface is formed by continuously and moderately pressing with a conveying belt so as to prevent powder or fine particle materials from leaking in the conveying process. To achieve and maintain an effective seal, adjustment of the apron compression force is critical. For a long time, this adjustment has been based on manual means, i.e. by the experience of the operator, using tool taps or bolt adjustments to change the skirt position. The method has the inherent defects that the adjustment precision is difficult to quantify and the consistency is poor, the uneven compaction force is easy to cause, the sealing failure and dust escape are caused when the pressure is too small, the abrasion of the apron board and the conveying belt is accelerated when the pressure is too large, the operation energy consumption is increased, and the real-time dynamic adjustment cannot be realized in the operation of equipment. In order to overcome the defect of manual adjustment, an automatic compensation technology is developed gradually. For example, chinese patent No. CN202320514442U discloses an automatic compensation device for the skirt of a chute. The device is characterized in that a pressure sensor is rigidly embedded in the skirt plate body, and a vertical driving mechanism formed by a nitrogen spring and a horizontal driving mechanism formed by an air cylinder and a pushing rod are arranged. When the sensor detects that the contact stress is lower than the threshold value, the system drives the transverse mechanism to move the apron board outwards, the nitrogen spring is used for pushing the apron board down to compensate the gap, and finally the apron board is reset and pressed. Although the scheme introduces an automatic compensation concept, a series of fundamental technical limitations caused by a sensor embedding and mounting mode are still exposed in practical application, and the precision, the instantaneity and the reliability of seal adjustment are severely restricted: The signal perception is distorted, so that the adjustment reference is misaligned, namely, the apron board is used as a wear-resistant component which is directly contacted with a high-speed running belt, and continuously bears vibration, impact and material friction. The pressure sensor is directly embedded into the skirt board, so that an integral rigid structure is formed between the pressure sensor and the skirt board, and dynamic interference such as high-frequency vibration, instant impact and the like of the belt is directly transmitted to the sensor without attenuation, so that the output signal noise is large and the signal to noise ratio is low. The control system takes the distortion signal as an adjusting reference, so that the real attenuation trend of the sealing compaction force is difficult to accurately identify, misjudgment is easy to generate, unnecessary misoperation or compensation lag is caused, and the adjusting precision is severely restricted. The sensing unit is vulnerable and difficult to maintain, the reliability of the system is difficult to ensure, and the typical service life of the pressure sensor serving as a precise electronic element is far lower than that of the wear-resistant apron board. The pressure sensor is embedded into the skirt board, so that the skirt board is directly exposed to a severe environment with high abrasion and high mechanical impact, and the failure of the skirt board body is easy to occur. Once the pressure sensor is damaged, the whole automatic compensation system loses the sensing function and falls into paralysis. More prominently, the whole apron board must be disassembled for replacing the sensor, the maintenance flow is tedious, the downtime is long, the usability of the system and the economy of long-term operation are greatly influenced, and the continuous reliability of automatic adjustment is difficult to ensure. In summary, the conventional apron adjusting device has obvious defects in the aspect of long-term maintenance of adjusting precision. Disclosure of Invention Aiming at the problems in the prior art, the invention aims to provide an intelligent apron board adjusting device and method for a conveyor, so as to improve the accuracy and reliability of the sealing performance of a guide chute. In order to achieve the above purpose, the te