A control method and control device for a curve belt conveyor

Abstract

The present invention discloses a control method and a control device for a curve belt conveyor. In the control method: the actual operating speed at the corresponding position of each inner bend idler is obtained. Taking the condition that the actual operating speed is less than the corresponding calculated critical speed, step A is executed: the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension are calculated, and the difference between the real-time centripetal force and the real-time centrifugal force is calculated. According to the data relationship table between the centrifugal force and the idler parameters, the theoretical idler height and the theoretical front inclination angle of the corresponding inner bend idler are obtained, and the actual idler height of the inner bend idler is adjusted to the theoretical idler height, and the actual front inclination angle of the inner bend idler is adjusted to the theoretical front inclination angle, so that the adjusted centrifugal force and the real-time centripetal force are kept consistent. This application combines the actual operating conditions of the curve belt conveyor to precisely control each inner bend idler, truly realizes the force balance of the curve belt, and ensures the normal operation of the conveyor.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, and particularly to a control method and a control device for a curve belt conveyor. Background Art

[0002] In a curve belt conveyor, the inner curve of the horizontal turning section is raised, and at the same time, the idlers on both sides are installed with forward inclination, so that a centrifugal force is generated during the operation of the conveyor to overcome the centripetal component force of the conveying tension caused by turning, thereby ensuring the normal operation of the curve belt.

[0003] The prior art discloses a hydraulically automatic control idler for a curve belt conveyor, which includes an idler formed by a roller, an idler bracket and a hinge support located in the middle of the idler bracket, and also includes a support beam, a hydraulic device and a touch switch. The support beam is arranged below one end of the idler bracket, the hydraulic device is arranged below the support beam, and the hydraulic cylinder of the hydraulic device is connected to the bottom of the support beam. The touch switch is electrically connected to the hydraulic device, and the touch switch includes a downward touch switch arranged at the outer end of the turning of the idler and an upward touch switch arranged at the inner end of the turning of the idler. In order to balance the resultant tension of the arc section, the inner arc of the idler is raised under no-load conditions, and the inner arc is lowered under full-load conditions to achieve force balance, and the automatic control of the inner elevation angle of the idler at the horizontal turning is realized, so that the belt can pass normally at the horizontal turning section, and further ensure the normal operation of the curve belt conveyor at the horizontal turning.

[0004] However, in actual applications, the tensions generated by the curve belt under different loads and different operating speeds are different, resulting in inconsistent centripetal forces generated at different turning points. The control method of raising under no-load and lowering under full-load in the prior art is too simple and one-sided, divorced from the actual operating speed and working conditions, and it is difficult to achieve true force balance.

[0005] Therefore, how to provide a control method and a control device for a curve belt conveyor to dynamically adjust the curve belt conveyor according to the actual operating speed and working conditions and achieve true force balance is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a control method and a control device for a curve belt conveyor to dynamically adjust the curve belt conveyor according to the actual operating speed and working conditions, truly achieve the force balance of the curve belt, and ensure the normal operation of the conveyor.

[0007] To solve the above technical problems, the present invention provides a control method for a curve belt conveyor, which obtains the actual operating speed of each position corresponding to the inner idler of the curve belt conveyor, and takes the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner idler of the bend, and executes step A at the corresponding position of the inner idler of the bend:

[0008] Calculate the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force;

[0009] According to the data relationship table between the centrifugal force and the idler parameters, obtain the theoretical idler height and the theoretical front inclination angle corresponding to the inner idler of the bend, adjust the actual idler height of the inner idler of the bend to the theoretical idler height, and adjust the actual front inclination angle of the inner idler of the bend to the theoretical front inclination angle, so that the adjusted centrifugal force is consistent with the real-time centripetal force.

[0010] Among them, calculating the critical speed means that at this operating speed, the centrifugal force generated by the curve belt conveyor at the turning point is consistent with the centripetal force generated by the curve belt tension. Theoretically, when the actual operating speed of the curve belt conveyor is greater than the calculated critical speed, the conveyor has failed. Therefore, in practical applications, the rated speed of the curve belt conveyor must not be greater than the calculated critical speed. If the actual operating speed of the curve belt conveyor is consistent with the calculated critical speed, the centrifugal force generated by the curve belt conveyor at the turning point is consistent with the centripetal force generated by the curve belt tension, and no adjustment is required. Therefore, the control method of the curve belt conveyor of the present invention is based on the condition that the actual operating speed of the curve belt conveyor is less than the calculated critical speed corresponding to the inner idler of the bend.

[0011] At the same time, since in practical applications, the centripetal forces generated by the curve belt at different turning points are inconsistent, therefore, the control method of the curve belt conveyor of the present invention performs personalized adjustment on each inner idler of the bend to obtain the real-time centrifugal force and the real-time centripetal force generated by the curve belt tension at the corresponding position of each inner idler of the bend. Generally speaking, the real-time centrifugal force is less than the real-time centripetal force generated by the curve belt tension. Therefore, through the data relationship table between the centrifugal force and the idler parameters, the idler height and the front inclination angle of the inner idler of the bend can be adjusted, and the actual idler height of the inner idler of the bend can be adjusted to the theoretical idler height, and the actual front inclination angle of the inner idler of the bend can be adjusted to the theoretical front inclination angle to make up for the difference between the real-time centrifugal force and the real-time centripetal force. In this way, the adjusted centrifugal force is consistent with the real-time centripetal force, realizing the force balance of the curve belt. In practice, the above steps can be repeated at preset time intervals to achieve the dynamic adjustment of the curve belt and ensure that the conveyor can always operate normally.

[0012] It can be seen that the control method of the curve belt conveyor of the present application combines the actual operating conditions of the curve belt conveyor, precisely controls each inner idler of the bend, truly realizes the force balance of the curve belt, and ensures the normal operation of the conveyor.

[0013] Optionally, obtaining the calculated critical speed corresponding to the inner idler of the bend specifically includes the following steps:

[0014] Obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at the corresponding position under the preset radian data, and establish a linear proportional relationship between the load value and the critical speed under the preset radian data;

[0015] Obtain the calculated critical speed corresponding to the inner bend idler according to the real-time load value and real-time radian data of the curve belt.

[0016] Optionally, calculate the real-time centrifugal force during the operation of the curve belt conveyor, which specifically includes the following steps:

[0017] Record the unit mass of the conveyor when it is no-load and the first load value of the curve belt conveyor, record the unit mass of the conveyor when it is full-load and the second load value of the curve belt conveyor, and establish a linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor.

[0018] According to the real-time load value of the curve belt and the linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, calculate the real-time unit mass of the conveyor during the operation of the curve belt conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor.

[0019] Optionally, the unit mass of the conveyor when it is no-load is the unit mass of the curve belt, and the unit mass of the conveyor when it is full-load is the sum of the unit mass of the curve belt and the unit mass of the conveyed material.

[0020] Optionally, calculate the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor, which specifically includes the following steps:

[0021] Record the first minimum tension and the first maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during no-load operation of the curve belt conveyor, and calculate the centripetal force corresponding to the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during no-load operation of the curve belt conveyor;

[0022] Record the second minimum tension and the second maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during full-load operation of the curve belt conveyor, and calculate the centripetal force corresponding to the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during full-load operation of the curve belt conveyor;

[0023] Calculate the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor according to the real-time load value and real-time tension value of the curve belt.

[0024] Optionally, establish a data relationship table between the centrifugal force and the idler parameters, which specifically includes the following steps:

[0025] Taking the installation height and installation inclination of the straight idlers in the curve belt conveyor as the reference zero values, obtaining the centrifugal force that can be generated corresponding to the maximum lifting height of the idlers under unit tension and the centrifugal force that can be generated corresponding to the maximum forward inclination of the idlers under unit tension, and establishing a data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the forward inclination. This data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the forward inclination is the data relationship table between the centrifugal force and the idler parameters.

[0026] Optionally, outputting the simulation data and working condition data of the curve belt conveyor as the fixed installation guidance for the inner bend idlers.

[0027] The present invention also provides a control device for a curve belt conveyor, which is applicable to the control method of the foregoing curve belt conveyor, and is characterized by including:

[0028] A first acquisition module, configured to acquire the actual operating speed of each position corresponding to the inner bend idlers in the curve belt conveyor;

[0029] A critical speed management module, configured to store the calculated critical speed corresponding to the inner bend idlers, and capable of issuing an adjustment instruction on the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner bend idlers;

[0030] A first calculation module, configured to calculate the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force;

[0031] An inner bend idler data management module, configured to store the data relationship table between the centrifugal force and the idler parameters, and obtain the theoretical idler height and theoretical forward inclination corresponding to the inner bend idlers according to the difference between the real-time centripetal force and the real-time centrifugal force;

[0032] An adjustment module, configured to adjust the actual idler height of the inner bend idlers to the theoretical idler height, and adjust the actual forward inclination of the inner bend idlers to the theoretical forward inclination, so that the adjusted centrifugal force is consistent with the real-time centripetal force.

[0033] The control device of the curve belt conveyor of the present invention is applicable to the control method of the foregoing curve belt conveyor, and thus has the same technical effects as the control method of the foregoing curve belt conveyor, which will not be elaborated herein.

[0034] Optionally, the critical speed management module includes a first acquisition unit and a first calculation unit, wherein:

[0035] The first acquisition unit is used to obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at corresponding positions under preset radian data. The first acquisition unit is also used to collect the real-time load value and real-time radian data of the curve belt;

[0036] The first calculation unit is used to establish a linear proportional relationship between the load value and the critical speed under preset radian data; and can calculate the calculated critical speed corresponding to the inner curved idler according to the real-time load value and real-time radian data of the curve belt.

[0037] Optionally, the first calculation module includes a second acquisition unit and a second calculation unit, where:

[0038] The second acquisition unit is used to collect the unit mass of the conveyor when it is unloaded and the first load value of the curve belt conveyor, and the unit mass of the conveyor when it is fully loaded and the second load value of the curve belt conveyor, and is used to collect the real-time load value of the curve belt;

[0039] The second calculation unit is used to establish a linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, calculate the real-time unit mass of the conveyor during the operation of the curve belt conveyor according to the linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor.

[0040] Optionally, the first calculation module further includes a third acquisition unit and a third calculation unit, where:

[0041] The third acquisition unit is used to collect the first minimum tension and the first maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during no-load operation of the curve belt conveyor; and is used to collect the second minimum tension and the second maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during full-load operation of the curve belt conveyor; and is used to collect the real-time load value and real-time tension value of the curve belt;

[0042] The third calculation unit is used to calculate the centripetal force generated by the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during no-load operation of the curve belt conveyor; and is used to calculate the centripetal force generated by the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during full-load operation of the curve belt conveyor; and is used to calculate the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor according to the real-time load value and real-time tension value of the curve belt.

[0043] Optionally, the inner curved idler data management module includes a fourth acquisition unit and a fourth calculation unit, where:

[0044] The fourth acquisition unit is used to obtain the centrifugal force that can be generated corresponding to the maximum lifting height of the idler under unit tension, and the centrifugal force that can be generated corresponding to the maximum front inclination angle of the idler under unit tension;

[0045] The fourth calculation unit is used to establish a data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the front inclination angle. The data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the front inclination angle is the data relationship table between the centrifugal force and the idler parameters; the fourth calculation unit can also obtain the theoretical idler height and the theoretical front inclination angle corresponding to the inner idler on the bend according to the difference between the real-time centripetal force and the real-time centrifugal force, and the data relationship table between the centrifugal force and the idler parameters.

[0046] Optionally, it further includes a simulation analysis module, and the simulation analysis module is used to output the simulation data and working condition data of the curve belt conveyor as the fixed installation guidance for the inner idler on the bend. Description of the Drawings

[0047] Figure 1 It is a flowchart of a specific embodiment of the control method of the curve belt conveyor provided by the present invention;

[0048] Figure 2 It is Figure 1 a flowchart of obtaining the calculated critical speed corresponding to the inner idler on the bend in the control method of the curve belt conveyor;

[0049] Figure 3 It is Figure 1 a flowchart of calculating the real-time centrifugal force during the operation of the curve belt conveyor in the control method of the curve belt conveyor;

[0050] Figure 4 It is Figure 1 a flowchart of calculating the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor in the control method of the curve belt conveyor;

[0051] Figure 5 It is a flowchart of the working process of a specific embodiment of the control device of the curve belt conveyor provided by the present invention. Detailed Embodiments

[0052] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0053] The present invention provides a control method for a curve belt conveyor. Specifically: obtain the actual operating speed at the corresponding position of each inner idler on the bend of the curve belt conveyor, and execute step A at the corresponding position of the inner idler on the bend on the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner idler on the bend:

[0054] Calculate the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force;

[0055] According to the data relationship table between the centrifugal force and the idler parameters, obtain the theoretical idler height and the theoretical front inclination angle of the inner idler on the bend side, and adjust the actual idler height of the inner idler on the bend side to the theoretical idler height, and adjust the actual front inclination angle of the inner idler on the bend side to the theoretical front inclination angle, so that the adjusted centrifugal force and the real-time centripetal force are consistent.

[0056] Among them, calculating the critical speed means that at this operating speed, the centrifugal force generated by the curve belt conveyor at the turning point is consistent with the centripetal force generated by the curve belt tension. Theoretically, when the actual operating speed of the curve belt conveyor is greater than the calculated critical speed, the conveyor has failed. Therefore, in practical applications, the rated speed of the curve belt conveyor must not be greater than the calculated critical speed. And if the actual operating speed of the curve belt conveyor is consistent with the calculated critical speed, the centrifugal force generated by the curve belt conveyor at the turning point is consistent with the centripetal force generated by the curve belt tension, and no adjustment is required. Therefore, the control method of the curve belt conveyor of the present invention is based on the condition that the actual operating speed of the curve belt conveyor is less than the calculated critical speed of the corresponding inner idler on the bend side.

[0057] At the same time, since in practical applications, the centripetal forces generated by the curve belt at different turning points are inconsistent, therefore, the control method of the curve belt conveyor of the present invention performs personalized adjustment on each inner idler on the bend side to obtain the real-time centrifugal force at the corresponding position of each inner idler on the bend side and the real-time centripetal force generated by the curve belt tension. Generally speaking, the real-time centrifugal force is less than the real-time centripetal force generated by the curve belt tension. Therefore, through the data relationship table between the centrifugal force and the idler parameters, the idler height and the front inclination angle of the inner idler on the bend side can be adjusted, and the actual idler height of the inner idler on the bend side can be adjusted to the theoretical idler height, and the actual front inclination angle of the inner idler on the bend side can be adjusted to the theoretical front inclination angle to make up for the difference between the real-time centrifugal force and the real-time centripetal force. In this way, the adjusted centrifugal force and the real-time centripetal force are consistent, realizing the force balance of the curve belt. In practice, the above steps can be repeated every preset time interval to achieve the dynamic adjustment of the curve belt and ensure that the conveyor can always operate normally.

[0058] It can be seen that the control method of the curve belt conveyor of the present application combines the actual operating conditions of the curve belt conveyor, precisely controls each inner idler on the bend side, truly realizes the force balance of the curve belt, and ensures the normal operation of the conveyor.

[0059] Among them, the above preset time can be adaptively adjusted according to the actual operating conditions of the curve belt conveyor, and no limitation is made here.

[0060] Among them, the actual operating speed at the corresponding position of each inner turning idler can be detected by a speed detector for the running speed of the curved belt.

[0061] Furthermore, obtaining the calculated critical speed corresponding to the inner turning idler specifically includes the following steps:

[0062] Obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at the corresponding position of the inner turning idler under the preset radian data, and establish a linear proportional relationship between the load value and the critical speed under the preset radian data;

[0063] According to the real-time load value and real-time radian data of the curved belt, obtain the calculated critical speed corresponding to the inner turning idler.

[0064] Among them, the no-load load value and full-load load value can be directly obtained through detection.

[0065] Among them, the no-load critical speed is the operating speed when the centrifugal force generated by the curved belt conveyor at the turning point is consistent with the centripetal force generated by the curved belt tension under the no-load condition. Therefore, in practical applications, under the no-load condition, the centrifugal force generated by the curved belt conveyor at the turning point and the centripetal force generated by the curved belt tension can be calculated, and the operating speed of the curved belt conveyor can be adjusted so that the centrifugal force and centripetal force are consistent after adjustment, and record the operating speed at this time, which is the no-load critical speed.

[0066] Among them, the full-load critical speed is the operating speed when the centrifugal force generated by the curved belt conveyor at the turning point is consistent with the centripetal force generated by the curved belt tension under the full-load condition. Therefore, in practical applications, under the full-load condition, the centrifugal force generated by the curved belt conveyor at the turning point and the centripetal force generated by the curved belt tension can be calculated, and the operating speed of the curved belt conveyor can be adjusted so that the centrifugal force and centripetal force are consistent after adjustment, and record the operating speed at this time, which is the full-load critical speed.

[0067] In this way, by establishing a linear proportional relationship between the load value and the critical speed under the preset radian data, in actual operation, as long as the real-time radian data of the curved belt is obtained, and the proportional relationship between the real-time radian data and the preset radian data, the linear proportional relationship between the load value and the critical speed under the real-time radian data can be obtained. By obtaining the real-time load value, the calculated critical speed under the current working condition can be obtained, so as to compare with the actual operating speed at the corresponding position to determine whether the adjustment condition is met.

[0068] Furthermore, calculating the real-time centrifugal force when the curved belt conveyor is running specifically includes the following steps:

[0069] Record the unit mass of the conveyor when it is unloaded and the first load value of the curve belt conveyor, record the unit mass of the conveyor when it is fully loaded and the second load value of the curve belt conveyor, and establish a linear proportional relationship between the unit mass of the conveyor and the conveyor load value.

[0070] According to the real-time load value of the curve belt and the linear proportional relationship between the unit mass of the conveyor and the conveyor load value, calculate the real-time unit mass of the conveyor during the operation of the curve belt conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor.

[0071] Among them, the unit mass of the conveyor when it is unloaded is the unit mass of the curve belt. Record the load value of the conveyor at this time as the first load value. The unit mass of the conveyor when it is fully loaded is the sum of the unit mass of the curve belt and the unit mass of the conveyed material. Record the load value of the conveyor at this time as the second load value. In this way, a linear proportional relationship between the unit mass of the conveyor and the conveyor load value can be established. During the operation, when the real-time load value of the curve belt is measured, the real-time unit mass of the conveyor can be obtained, and then the real-time centrifugal force can be calculated according to the standard calculation formula of the centrifugal force.

[0072] Furthermore, calculate the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor, which specifically includes the following steps:

[0073] Record the first minimum tension and the first maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during the unloaded operation of the curve belt conveyor, and calculate the centripetal forces corresponding to the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during the unloaded operation of the curve belt conveyor;

[0074] Record the second minimum tension and the second maximum tension when the curve belt conveyor starts from rest and accelerates to the rated uniform speed during the fully loaded operation of the curve belt conveyor, and calculate the centripetal forces corresponding to the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force during the fully loaded operation of the curve belt conveyor;

[0075] According to the real-time load value and the real-time tension value of the curve belt, calculate the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor.

[0076] Among them, the first minimum tension, the first maximum tension, the second minimum tension, the second maximum tension and the real-time tension value can be directly measured by a tensiometer.

[0077] Among them, the unloaded load value, the fully loaded load value, and the real-time load value can be directly measured by a load tester.

[0078] As described above, by establishing the linear proportional relationship between the curve belt tension and the centripetal force during no-load operation, and the linear proportional relationship between the curve belt tension and the centripetal force during full-load operation, in actual operation, the real-time load value of the curve belt conveyor is obtained. Based on the proportional relationship between the real-time load value, the no-load load value, and the full-load load value, the linear proportional relationship between the curve belt tension and the centripetal force under the real-time load condition of the curve belt conveyor can be obtained. Then, according to the real-time tension value of the curve belt, the real-time centripetal force generated by the curve belt tension during the operation of the curve belt conveyor can be obtained.

[0079] Further, a data relationship table between the centrifugal force and the idler parameters is established, which specifically includes the following steps:

[0080] Taking the installation height and installation inclination of the straight idlers in the curve belt conveyor as the reference zero values, the centrifugal force generated by the maximum lifting height of the idlers under unit tension and the centrifugal force generated by the maximum forward inclination of the idlers under unit tension are obtained, and a linear relationship data table between the centrifugal force and the lifting height, and a linear relationship data table between the centrifugal force and the forward inclination are established. The linear relationship data table between the centrifugal force and the lifting height, and the linear relationship data table between the centrifugal force and the forward inclination are the data relationship table between the centrifugal force and the idler parameters.

[0081] Among them, the centrifugal force generated by the maximum lifting height of the idlers under unit tension and the centrifugal force generated by the maximum forward inclination of the idlers under unit tension can be calculated through experiments; by obtaining the centrifugal force generated by the maximum lifting height of the idlers under unit tension and the centrifugal force generated by the maximum forward inclination of the idlers under unit tension, the centrifugal force of the entire turning section can be obtained according to the integral principle.

[0082] In this way, by establishing a linear relationship data table between the centrifugal force and the lifting height, and a linear relationship data table between the centrifugal force and the forward inclination, when the difference between the real-time centripetal force and the real-time centrifugal force is obtained, the specific values of the lifting height and the forward inclination angle can be determined, and the idler height and forward inclination angle of the corresponding inner-side idlers of the bend can be adjusted to generate a greater centrifugal force to make up for the difference between the real-time centripetal force and the real-time centrifugal force.

[0083] In addition, the control method of the curve belt conveyor of the present invention can also output the simulation data and working condition data of the curve belt conveyor as the fixed installation guidance for the inner-side idlers of the bend.

[0084] Among them, the simulation data is the structural parameters of the curve belt conveyor.

[0085] Among them, the working condition data is the actual running speed of the curve belt conveyor at the corresponding position of each inner-side idler of the bend, the centripetal force generated by the curve belt tension, the centrifugal force, the theoretical idler height, and the theoretical forward inclination angle, which are used as the fixed installation guidance for the subsequent inner-side idlers of the bend. In this way, the curve belt conveyor can be closer to the balanced state.

[0086] The present invention also provides a control device for a curve belt conveyor, which is applicable to the control method of the aforementioned curve belt conveyor, and includes:

[0087] A first acquisition module, configured to obtain the actual operating speed at the corresponding position of each inner curved idler in the curve belt conveyor;

[0088] A critical speed management module, configured to store the calculated critical speed corresponding to the inner curved idler, and capable of issuing an adjustment instruction on the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner curved idler;

[0089] A first calculation module, configured to calculate the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force;

[0090] An inner curved idler data management module, configured to store a data relationship table between the centrifugal force and the idler parameters, and obtain the theoretical idler height and the theoretical front inclination angle of the corresponding inner curved idler according to the difference between the real-time centripetal force and the real-time centrifugal force;

[0091] An adjustment module, configured to adjust the actual idler height of the inner curved idler to the theoretical idler height, and adjust the actual front inclination angle of the inner curved idler to the theoretical front inclination angle, so that the adjusted centrifugal force and the real-time centripetal force are consistent.

[0092] It can be understood that in practical applications, the first acquisition module, the critical speed management module, the first calculation module, the inner curved idler data management module, and the adjustment module are all electrically connected for data transmission. Specifically:

[0093] The first acquisition module can acquire the actual operating speed at the corresponding position of each inner curved idler in the curve belt conveyor, and transmit the acquisition result to the critical speed management module;

[0094] The critical speed management module obtains the actual operating speed at the corresponding position of each inner curved idler, and compares the actual operating speed with the corresponding calculated critical speed. When the actual operating speed is less than the corresponding calculated critical speed, the critical speed management module can issue an adjustment instruction to the first calculation module;

[0095] When the first calculation module receives the adjustment instruction, it can calculate the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force. The first calculation module transmits this difference to the inner curved idler data management module;

[0096] The data management module of the inner bend idler obtains the theoretical idler height and theoretical front inclination angle of the corresponding inner bend idler according to the difference between the received real-time centripetal force and real-time centrifugal force, and according to the data relationship table between the centrifugal force and the idler parameters. The data management module of the inner bend idler transmits the theoretical idler height and theoretical front inclination angle of the corresponding inner bend idler to the adjustment module;

[0097] The adjustment module adjusts the actual idler height of the inner bend idler to the theoretical idler height, and adjusts the actual front inclination angle of the inner bend idler to the theoretical front inclination angle, so that the adjusted centrifugal force and the real-time centripetal force are consistent.

[0098] The control device of the curve belt conveyor of the present invention combines the actual operating conditions of the curve belt conveyor, precisely controls each inner bend idler, truly realizes the force balance of the curve belt, and ensures the normal operation of the conveyor.

[0099] Specifically, the critical speed management module includes a first acquisition unit and a first calculation unit, where:

[0100] The first acquisition unit is used to obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at the corresponding position under the preset radian data. The first acquisition unit is also used to collect the real-time load value and real-time radian data of the curve belt;

[0101] The first calculation unit is used to establish a linear proportional relationship between the load value and the critical speed under the preset radian data; and can calculate the calculated critical speed of the corresponding inner bend idler according to the real-time load value and real-time radian data of the curve belt.

[0102] In this way, a linear proportional relationship between the load value and the critical speed is established under the preset radian data. By collecting the real-time load value and real-time radian data of the curve belt, the calculated critical speed under the current working conditions can be obtained, so as to compare with the actual operating speed at the corresponding position to determine whether the adjustment condition is met.

[0103] Further, the first calculation module includes a second acquisition unit and a second calculation unit, where:

[0104] The second acquisition unit is used to collect the unit mass of the conveyor when it is no-load and the first load value of the curve belt conveyor, and the unit mass of the conveyor when it is full-load and the second load value of the curve belt conveyor, and is used to collect the real-time load value of the curve belt;

[0105] The second calculation unit is used to establish a linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, calculate the real-time unit mass of the conveyor during the operation of the curve belt conveyor according to the linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor.

[0106] Furthermore, the first calculation module further includes a third acquisition unit and a third calculation unit, where:

[0107] The third acquisition unit is used to acquire the first minimum tension and the first maximum tension when the curve belt conveyor is running without load, starting from rest and accelerating to the rated constant speed; and is used to acquire the second minimum tension and the second maximum tension when the curve belt conveyor is running at full load, starting from rest and accelerating to the rated constant speed; and is used to acquire the real-time load value and the real-time tension value of the curve belt;

[0108] The third calculation unit is used to calculate the centripetal force generated by the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force when the curve belt conveyor is running without load; and is used to calculate the centripetal force generated by the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force when the curve belt conveyor is running at full load; and is used to calculate the real-time centripetal force generated by the curve belt tension when the curve belt conveyor is running according to the real-time load value and the real-time tension value of the curve belt.

[0109] Furthermore, the inner bend idler data management module includes a fourth acquisition unit and a fourth calculation unit, where:

[0110] The fourth acquisition unit is used to obtain the centrifugal force that can be generated corresponding to the highest lifting height of the idler under unit tension, and the centrifugal force that can be generated corresponding to the maximum forward inclination angle of the idler under unit tension;

[0111] The fourth calculation unit is used to establish a data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the forward inclination angle. The data table of the linear relationship between the centrifugal force and the lifting height, and the linear relationship between the centrifugal force and the forward inclination angle is the data relationship table between the centrifugal force and the idler parameters; the fourth calculation unit can also obtain the theoretical idler height and the theoretical forward inclination angle corresponding to the inner bend idler according to the difference between the real-time centripetal force and the real-time centrifugal force.

[0112] In addition, a simulation analysis module is further included. The simulation analysis module is used to output the simulation data and the working condition data of the curve belt conveyor as the fixed installation guidance for the inner bend idlers.

[0113] As mentioned above, the working condition data is the actual running speed of the curve belt conveyor at the corresponding position of each inner bend idler, the centripetal force generated by the curve belt tension, the centrifugal force, the theoretical idler height and the theoretical forward inclination angle, which are used as the fixed installation guidance for the subsequent inner bend idlers. In this way, the curve belt conveyor can be closer to the balanced state.

[0114] The above has introduced in detail a control method and a control device for a curve belt conveyor provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A control method for a curve belt conveyor, characterized in that, Obtain the actual operating speed at the corresponding position of each inner bend idler in the curved belt conveyor. Taking the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner bend idler, perform step A at the corresponding position of the inner bend idler: Calculate the real-time centrifugal force generated during the operation of the curved belt conveyor and the real-time centripetal force generated by the curved belt tension, and calculate the difference between the real-time centripetal force and the real-time centrifugal force; According to the data relationship table of centrifugal force and idler parameters, obtain the theoretical idler height and theoretical front inclination angle corresponding to the inner bend idler, adjust the actual idler height of the inner bend idler to the theoretical idler height, and adjust the actual front inclination angle of the inner bend idler to the theoretical front inclination angle, so that the adjusted real-time centrifugal force and the real-time centripetal force are consistent; Obtain the calculated critical speed corresponding to the inner bend idler, which specifically includes the following steps: Obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at the corresponding position under the preset radian data, and establish a linear proportional relationship between the load value and the critical speed under the preset radian data; According to the real-time load value and real-time radian data of the curved belt, obtain the calculated critical speed corresponding to the inner bend idler; Calculate the real-time centrifugal force generated during the operation of the curved belt conveyor, which specifically includes the following steps: Record the unit mass of the conveyor when it is no-load and the first load value of the curved belt conveyor, record the unit mass of the conveyor when it is full-load and the second load value of the curved belt conveyor, and establish a linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor; According to the real-time load value of the curved belt and the linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, calculate the real-time unit mass of the conveyor during the operation of the curved belt conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor; The unit mass of the conveyor when it is no-load is the unit mass of the curved belt, and the unit mass of the conveyor when it is full-load is the sum of the unit mass of the curved belt and the unit mass of the conveyed material.

2. The control method of the curve belt conveyor according to claim 1, characterized in that Calculate the real-time centripetal force generated by the curved belt tension during the operation of the curved belt conveyor, which specifically includes the following steps: Record the first minimum tension and the first maximum tension when the curved belt conveyor starts from rest and accelerates to the rated constant speed during no-load operation of the curved belt conveyor, and calculate the centripetal forces corresponding to the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curved belt tension and the centripetal force during no-load operation of the curved belt conveyor; Record the second minimum tension and the second maximum tension when the curved belt conveyor starts from rest and accelerates to the rated constant speed during full-load operation of the curved belt conveyor, and calculate the centripetal forces corresponding to the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curved belt tension and the centripetal force during full-load operation of the curved belt conveyor; According to the real-time load value and real-time tension value of the curved belt, calculate the real-time centripetal force generated by the curved belt tension during the operation of the curved belt conveyor.

3. The control method of the curve belt conveyor according to claim 1, characterized in that, Establish a data relationship table of centrifugal force and idler parameters, which specifically includes the following steps: Taking the installation height and installation inclination angle of the straight idlers in the curve belt conveyor as the reference zero values, obtaining the centrifugal force that can be generated corresponding to the maximum lifting height of the idlers under unit tension and the centrifugal force that can be generated corresponding to the maximum forward inclination angle of the idlers under unit tension, and establishing a data table of the linear relationship between the centrifugal force and the lifting height and the linear relationship between the centrifugal force and the forward inclination angle. This data table of the linear relationship between the centrifugal force and the lifting height and the linear relationship between the centrifugal force and the forward inclination angle is the data relationship table between the centrifugal force and the idler parameters.

4. The control method of the curve belt conveyor according to claim 1, characterized in that, Outputting the simulation data and working condition data of the curve belt conveyor as the fixed installation guidance for the inner bend idlers.

5. A control device for a curve belt conveyor, applicable to the control method of the curve belt conveyor according to any one of claims 1-4, characterized in that, Including: A first acquisition module for obtaining the actual operating speed of each position corresponding to the inner bend idlers in the curve belt conveyor. A critical speed management module for storing the calculated critical speeds corresponding to the inner bend idlers and capable of issuing an adjustment instruction on the condition that the actual operating speed is less than the calculated critical speed corresponding to the inner bend idlers. A first calculation module for calculating the real-time centrifugal force generated during the operation of the curve belt conveyor and the real-time centripetal force generated by the curve belt tension, and calculating the difference between the real-time centripetal force and the real-time centrifugal force. An inner bend idler data management module for storing the data relationship table between the centrifugal force and the idler parameters and obtaining the theoretical idler height and theoretical forward inclination angle corresponding to the inner bend idlers according to the difference between the real-time centripetal force and the real-time centrifugal force. An adjustment module for adjusting the actual idler height of the inner bend idlers to the theoretical idler height and adjusting the actual forward inclination angle of the inner bend idlers to the theoretical forward inclination angle so that the adjusted centrifugal force is consistent with the real-time centripetal force.

6. The control device of the curve belt conveyor according to claim 5, characterized in that, The critical speed management module includes a first acquisition unit and a first calculation unit, where: The first acquisition unit is used to obtain the no-load load value, full-load load value, no-load critical speed, and full-load critical speed at the corresponding position under the preset radian data. The first acquisition unit is also used to collect the real-time load value and real-time radian data of the curve belt. The first calculation unit is used to establish a linear proportional relationship between the load value and the critical speed under the preset radian data; and capable of calculating the calculated critical speed corresponding to the inner bend idlers according to the real-time load value and real-time radian data of the curve belt.

7. The control device of the curve belt conveyor according to claim 5, characterized in that, The first calculation module includes a second acquisition unit and a second calculation unit, where: The second acquisition unit is used to collect the unit mass of the conveyor when it is no-load and the first load value of the curve belt conveyor, and the unit mass of the conveyor when it is full-load and the second load value of the curve belt conveyor, and is used to collect the real-time load value of the curve belt. The second calculation unit is used to establish a linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, calculate the real-time unit mass of the curve belt conveyor during operation according to the linear proportional relationship between the unit mass of the conveyor and the load value of the conveyor, and calculate the real-time centrifugal force based on the real-time unit mass of the conveyor.

8. The control device of the curve belt conveyor according to claim 5, characterized in that, The first calculation module further includes a third acquisition unit and a third calculation unit, where: The third acquisition unit is used to acquire the first minimum tension and the first maximum tension when the curve belt conveyor runs without load, from the time of stationary start-up to the time of accelerating to the rated uniform speed; and is used to acquire the second minimum tension and the second maximum tension when the curve belt conveyor runs at full load, from the time of stationary start-up to the time of accelerating to the rated uniform speed; and is used to acquire the real-time load value and the real-time tension value of the curve belt. The third calculation unit is used to calculate the centripetal force generated corresponding to the first minimum tension and the first maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force when the curve belt conveyor runs without load; and is used to calculate the centripetal force generated corresponding to the second minimum tension and the second maximum tension, and establish a linear proportional relationship between the curve belt tension and the centripetal force when the curve belt conveyor runs at full load; and is used to calculate the real-time centripetal force generated by the curve belt tension when the curve belt conveyor runs according to the real-time load value and the real-time tension value of the curve belt.

9. The control device of the curve belt conveyor according to claim 5, characterized in that, The inner bend idler data management module includes a fourth acquisition unit and a fourth calculation unit, where: The fourth acquisition unit is used to obtain the centrifugal force that can be generated corresponding to the maximum lift height of the idler under unit tension, and the centrifugal force that can be generated corresponding to the maximum forward inclination angle of the idler under unit tension. The fourth calculation unit is used to establish a data table of the linear relationship between the centrifugal force and the lift height, and the linear relationship between the centrifugal force and the forward inclination angle. The data table of the linear relationship between the centrifugal force and the lift height, and the linear relationship between the centrifugal force and the forward inclination angle is the data relationship table between the centrifugal force and the idler parameters; the fourth calculation unit can also obtain the theoretical idler height and the theoretical forward inclination angle corresponding to the inner bend idler according to the difference between the real-time centripetal force and the real-time centrifugal force, and the data relationship table between the centrifugal force and the idler parameters.

10. The control device of the curve belt conveyor according to claim 5, characterized in that, It further includes a simulation analysis module, which is used to output the simulation data and the working condition data of the curve belt conveyor as the fixed installation guidance for the inner bend idler.

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