Electronic belt scale physical measurement verification system

Abstract

The invention discloses an electronic belt scale material object metering verification system, which aims at the basic principle of a conventional belt electronic scale, firstly optimizes the structure of a whole belt conveyor, realizes a longer weighing area by matching an arch-shaped frame with two belt supporting rollers, and on the basis of the above, realizes the real object metering verification of the electronic belt scale. Wherein the arch-shaped frame can deflect bidirectionally by taking the arrangement position of the weighing structure as a starting point, essentially, the arch-shaped frame can be matched with the tension change of a belt in the material conveying process, and particularly, the arch-shaped frame can directly feed back the deflection direction and the deflection angle of the arch-shaped frame by being matched with the linear movement of belt supporting rollers corresponding to the two sides of the arch-shaped frame in the vertical direction; and on the basis of the content, the dynamic weighing value obtained by the detection of the weighing structure is associated, the associated weighting coefficient is established, the parameter point set and the error are compared, and the obtained dynamic weighing value is subjected to calibration conversion, so that the accuracy of the weighing data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of physical weighing, and in particular to a physical measurement and calibration system for an electronic belt scale. Background Art

[0002] The electronic belt scale is essentially a weighing structure used in the transmission belt. The weighing principle is the same, but the application scenarios are different. The transmission belt is a flexible structure. During its operation, due to changes in belt tension, electromechanical equipment, environmental factors, sensors and other factors, its weighing data may deviate;

[0003] Specifically, after the material falls from the silo into the transmission belt, on the one hand, the existence of gravitational potential energy will cause the actual measured weight to be different. In addition, because the actual weighing area of ​​the entire transmission belt is relatively long, and the overall weighing area is further affected by the elastic deformation process and tension changes, especially during the blanking process, the elastic deformation process and tension changes are further affected, resulting in a heavy workload for the weighing structure, which is also one of the factors affecting the accuracy of the weighing data.

[0004] This application proposes a solution to this problem. Summary of the invention

[0005] The purpose of the present invention is to provide an electronic belt scale physical measurement and calibration system, and is illustrated for an electronic scale used in a transmission belt. The gravitational potential energy present in the blanking process will directly affect the weight measurement data, and the existence of the gravitational potential energy combined with the elastic deformation process and tension change of the belt will cause a heavy workload on the weighing structure, which is also one of the factors affecting the accuracy of the weight measurement data.

[0006] The object of the present invention can be achieved by the following technical solutions: an electronic belt scale physical measurement verification system, the physical measurement verification system is applied to a belt conveyor, the belt conveyor includes an arch frame, a hopper, a belt, a driving roller assembly, a belt support roller, a displacement sensor and a weighing structure, the physical measurement verification system consists of a dynamic parameter integration module, a dynamic analysis comparison module and a parameter group comparison module;

[0007] The dynamic parameter integration module is used to record the dynamic weighing value in the weighing structure and the auxiliary value associated with the displacement sensor, wherein the dynamic weighing value is represented by the relevant data obtained by the weighing structure and is represented by Mt, and the auxiliary value is represented by the display value in the displacement sensor and is represented by Ht, and the dynamic weighing value and the auxiliary value are sent to the dynamic analysis and comparison module;

[0008] In the dynamic analysis and comparison module, the initial values ​​of the dynamic weight measurement value Mt and the auxiliary value Ht are first set, which are represented by Mo and Ho respectively, and then the dynamic analysis and comparison are performed in combination with the auxiliary value Mt, and the dynamic analysis and comparison process is sent to the parameter group comparison module;

[0009] In the parameter group comparison module, firstly, the calculation method of the bias weight coefficient XHt is established through the dynamic analysis comparison module, and then the parameter point set M·H between the bias weight coefficient and the dynamic weight measurement value Mt is established according to the obtained bias weight coefficient XHt and the dynamic weight measurement value Mt. In the parameter group comparison module, the parameter point set M·H in the dynamic analysis comparison module is used as the basis, and the calculation method of the error ratio Ki associated with the dynamic weight measurement value Mt is established in the parameter point set M·H.

[0010] It is further configured that: the belt performs material transmission through a driving roller assembly, and the supporting roller is arranged in an inner position of the belt.

[0011] It is further configured as follows: the belt-supporting rollers located at the lower side of the hopper are set to a fixed position, two of the belt-supporting rollers are installed at the two end positions of the upper end of the arch frame, and the belt-supporting rollers installed on the arch frame are set to a working position, and the other two belt-supporting rollers located at the two end positions of the outer side of the arch frame are set to an auxiliary position.

[0012] It is further configured as follows: the static position of the belt support roller in the working position is higher than the static position of the belt support roller in the fixed position, and the dynamic position of the belt support roller in the auxiliary position matches the dynamic position of the belt support roller in the working position.

[0013] It is further configured as follows: a displacement sensor is installed at a position corresponding to the auxiliary position, and a transmission shaft of the displacement sensor is connected to the belt support roller in the auxiliary position.

[0014] It is further configured as follows: the displacement sensor is located directly below the middle section of the arch frame, and a transmission shaft of the displacement sensor is movably connected to the arch frame.

[0015] It is further set as follows: In the parameter group ratio module, the dynamic weight measurement value Mt is recalculated through the error ratio Ki and the real-time dynamic weight measurement value Mt, and the actual value of the material is or .

[0016] The present invention has the following beneficial effects:

[0017] 1. First, the conventional belt scale structure is optimized and improved, which is specifically reflected in the arch frame inside the belt conveyor. The arch frame is set along the length direction of the corresponding belt. Its purpose is to weigh a longer area. In the process of continuous material transmission, the tension change of the belt caused by the gravity of the material is combined with the setting height of the belt support roller at the corresponding arch frame. Because the arch frame can deflect freely during the normal rotation of the belt, the weighing process of the material is still completed by the weighing structure. Its purpose is to detect the weighing area of ​​a wider area;

[0018] 2. In combination with the above content, the key is to use the dynamic weight measurement value obtained by the weighing structure and the display value of the displacement sensor, where the displacement sensor is mainly used to indicate the deflection direction and deflection angle of the arch frame, and to generate a weight deviation coefficient in conjunction with the dynamic weight measurement value and the display value of the displacement sensor obtained by the implementation of the detection, and further generate an associated parameter point set, thereby combining multiple data to perform the error ratio analysis and calculation process again, and converting the dynamic weight measurement value collected in real time, with the purpose of calibrating the detected value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A structural schematic diagram of a belt conveyor in a physical measurement and verification system of an electronic belt scale proposed by the present invention;

[0021] Figure 2 The present invention proposes an electronic belt scale physical measurement and verification system Figure 1 sectional view of

[0022] Figure 3 The present invention proposes an electronic belt scale physical measurement and verification system Figure 1 A front view of

[0023] Figure 4 The present invention proposes an electronic belt scale physical measurement and verification system Figure 1 A schematic diagram of the structure of the arch frame;

[0024] Figure 5 The present invention provides an operation block diagram of an electronic belt scale physical measurement and verification system.

[0025] In the figure: 1. Arch frame; 2. Hopper; 3. Weighing structure; 4. Belt; 5. Driving roller assembly; 6. Support roller; 7. Displacement sensor. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1: For the electronic scale used in the transmission belt, the gravity potential energy in the blanking process will directly affect the weight measurement data. In addition, the existence of gravity potential energy combined with the elastic deformation process and tension change of the belt will cause the workload of the weighing structure to be heavy, which is also one of the factors affecting the accuracy of the weight measurement data. The following technical solutions are proposed:

[0028] Reference Figures 1 to 4 In this embodiment, an electronic belt scale physical measurement verification system is used in a belt conveyor. The belt conveyor includes an arch frame 1, a hopper 2, a belt 4, a driving roller assembly 5, a belt support roller 6, a displacement sensor 7 and a weighing structure 3. The belt 4 performs a material transmission action through the driving roller assembly 5, and the belt support roller 6 is arranged in an internal position of the belt 4.

[0029] The belt-supporting roller 6 located at the lower side of the hopper 2 is set as a fixed position, wherein two belt-supporting rollers 6 are installed at the two end positions of the upper end of the arch frame 1, and the belt-supporting rollers 6 installed on the arch frame 1 are set as working positions, and the other two belt-supporting rollers 6 located at the two end positions of the outer side of the arch frame 1 are set as auxiliary positions, the static position of the belt-supporting roller 6 in the working position is higher than the static position of the belt-supporting roller 6 in the fixed position, the dynamic position of the belt-supporting roller 6 in the auxiliary position matches the dynamic position of the belt-supporting roller 6 in the working position, and a displacement sensor 7 is installed at the position corresponding to the auxiliary position, the transmission shaft of the displacement sensor 7 is connected to the belt-supporting roller 6 in the auxiliary position, the displacement sensor 7 is located directly below the belt-supporting roller 6 in the auxiliary position, and the weighing structure 3 is located directly below the middle position of the arch frame 1.

[0030] Basic principle: For a brief description of the electronic belt scale, the material falls from the hopper 2 onto the belt 4, and the belt 4 continues to rotate under the action of the drive roller assembly 5. Figure 3 For example, the material is continuously moved from right to left by the action of the belt 4, and the weight of the material placed on the belt 4 is continuously detected by the weighing structure 3. The structural characteristics of the driving roller assembly 5 and the weighing structure 3 are not described in this embodiment.

[0031] However, it is different from the conventional belt transmission structure in that: because the material is only located on the upper side of the belt 4, it is necessary to support a sufficiently long transportation area with the arch frame 1 as much as possible, and Figure 3 For example, if the setting height of each belt support roller 6 corresponds to the setting position of the driving roller assembly 5, the essence is that the upper side of the belt 4 is relatively horizontal, but the belt 4 is affected by the gravity of the material, causing the belt 4 to bend downward;

[0032] In this embodiment, the setting positions of the two belt-carrying rollers 6 at the arch frame 1 are further restricted, specifically ensuring that the setting position of the belt 4 at the upper end position of the corresponding arch frame 1 is slightly higher. The static position of the belt-carrying roller 6 in the working position is restricted to be higher than the static position of the belt-carrying roller 6 in the fixed position. The static position is mainly used to indicate the relative position of the belt 4 when it is not started. When the material moves to the upper area of ​​the corresponding arch frame 1, the belt of this part bends downward due to the weight of the material, and the purpose is to ensure that the overall arch frame 1 can better withstand a sufficiently long transportation area.

[0033] It should also be noted that the weighing structure 3 is arranged directly below the arch frame 1, and the arch frame 1 is not directly fixedly connected. This is because the center point of the arch frame 1 and the output shaft of the weighing structure 3 are movably connected. Specifically, the arch frame 1 can be directional deflected along the transmission direction of the belt 4. For example, the belt 4 rotates counterclockwise, but the weight borne by the belt 4 is high, which may cause the arch frame 1 to deflect slightly in the clockwise direction. However, no matter which direction the arch frame 1 deflects, the weighing structure 3 will sense the weight of the material on the belt 4.

[0034] Embodiment 2: Supplementary explanation is given in combination with Embodiment 1. Since the belt support roller 6 is mainly used as a supporting structure for the belt 4 during transmission, it is necessary to improve the material transmission process. First, a plurality of belt support rollers 6 are added to the setting position of the hopper 2. The purpose is to ensure that the material that quickly falls onto the belt 4 generates a higher gravitational potential energy on the belt 4, so as to avoid directly affecting the tension change of the belt 4.

[0035] In addition, the arch frame 1 is set to an upwardly curved arch shape 1, which is used to better adapt to the curved state of the belt 4 on the one hand, and can better support a sufficiently long transportation area on the other hand;

[0036] However, the key lies in the two belt-supporting rollers 6 corresponding to the auxiliary position. Its essence is to ensure that the static position of the two belt-supporting rollers 6 in the auxiliary position is slightly higher than the belt-supporting rollers 6 in the working position. However, when the belt 4 continues to move, because the belt 4 is affected by the weight of the raw materials, the part of the belt 4 corresponding to the upper side of the arch frame 1 is affected downward, and the belt 4 further acts on the belt-supporting rollers 6 corresponding to the displacement sensor 7, so that the dynamic position of the two belt-supporting rollers 6 in the auxiliary position is flush with the dynamic position of the belt-supporting rollers 6 in the working position. The two belt-supporting rollers 6 in the auxiliary position can feedback the deflection direction and deflection angle of the arch frame 1 through the displacement data in the displacement sensor 7, because in the most ideal state, the arch frame 1 is in a natural straightening process, and the setting heights of the two belt-supporting rollers 6 in the auxiliary position are on the same horizontal plane.

[0037] Example 3: Reference Figure 5 , combined with the first and second embodiments, the physical measurement verification system is described, the physical measurement verification system is applied in the belt conveyor, and the physical measurement verification system is composed of a dynamic parameter integration module, a dynamic analysis comparison module and a parameter group comparison module;

[0038] The dynamic parameter integration module is used to record the dynamic weighing value in the weighing structure 3 and the auxiliary value associated with the displacement sensor 7, wherein the dynamic weighing value is represented by the relevant data obtained by the weighing structure 3 and is represented by Mt, and the auxiliary value is represented by the display value in the displacement sensor 7 and is represented by Ht, and the dynamic weighing value and the auxiliary value are sent to the dynamic analysis and comparison module;

[0039] In the dynamic analysis and comparison module, the initial values ​​of the dynamic weight measurement value and the auxiliary value are first set. The essence is that when the belt 4 is in a state without material and maintains normal operation, the arch frame 1 is in a normal straightening state, then the relevant data obtained by the weighing structure 3 is directly expressed as Mo, and the display values ​​of the two displacement sensors 7 are directly obtained based on this state and expressed as Ho, and after the hopper 2 releases the material onto the belt 4, the dynamic weight measurement value Mt on the weighing structure 3 changes, but the dynamic weight measurement value Mt is not used as the final value in the material measurement. It is specifically necessary to combine the auxiliary value Ht for dynamic analysis and comparison. The specific process is as follows:

[0040] S1: First, the auxiliary value is further subdivided into Ht according to the setting position of the displacement sensor 7 corresponding to the two belt support rollers 6 in the auxiliary position Z and Ht Y , and directly preset the linear length Lo of the arch frame 1 in the horizontal direction, and establish a calculation method for the weight coefficient XHt. The weight coefficient XHt is essentially calculated through a trigonometric function relationship. The weight coefficient XHt is explained as follows:

[0041] Specifically combined with the linear length Lo of the arch frame 1, and the position of the belt support roller 6 in the arch frame 1 is relatively stable in the initial state, because the static height of the belt support roller 6 in the auxiliary position is slightly higher than the height of the belt support roller 6 in the arch frame 1 (working position) in the initial state, but in the actual operation process, the belt 4 is affected by the gravity of the raw material and deforms. In this process, Ht is mainly obtained by real-time perception through the displacement sensor 7 located in the auxiliary position. Z and Ht Y , and when the belt 4 is deformed, the arch frame 1 will also deflect to the left or right due to the belt deformation. The calculation method of the weight coefficient XHt is: XHt=tanA=Ht Z / Lo or XHt = tanA = Ht Y / Lo, the weight coefficient XHt is essentially a tangent function in trigonometric function, where A is used to represent the deflection angle of the arch frame 1, and according to - , - The positive and negative relationship between the two sets of values ​​determines the deflection direction of the arch frame 1, which is specifically expressed as follows: > , then Figure 3 For example, arch frame 1 is deflected clockwise;

[0042] S2: In combination with the relevant contents in S1, it is explained again that when the belt 4 drives the material to continue to move, the arch frame 1 may undergo non-directional deflection, and the weight deviation coefficient XHt calculated when the arch frame 1 undergoes non-directional deflection is simultaneously recorded, and based on the obtained weight deviation coefficient XHt and the above-mentioned dynamic weight measurement value Mt, a parameter point set M·H between the weight deviation coefficient and the dynamic weight measurement value is established, and the parameter point set M·H includes XHt 1 、Mt 1 ,XHt 2 、Mt 2 ,XHt 3 、Mt 3 …XH i , Mt i , where i is just the number of the parameter point set and is a natural positive integer.

[0043] The parameter group comparison module is based on the parameter point set M·H in the dynamic analysis comparison module, and establishes a calculation method for the error ratio Ki associated with the dynamic weight measurement value Mt in the parameter point set M·H. , it should be noted that: Regarding the calculation formula of the bias coefficient XHt and the error ratio Ki , The absolute value is taken, and the error is greater than Ki Represents XHt in three sets of adjacent position parameter points M·H i Therefore, after obtaining the dynamic weight value Mt in real time, the actual value of the material is or , specific needs according to The positive and negative relationship between the two sets of values ​​determines the deflection direction of the arch frame 1. If the material moves from right to left on the belt 4, and It is used to indicate that the arch frame 1 deflects in the clockwise direction. The actual value of the material should be , on the contrary, when , the actual value of the material should be .

[0044] In summary: Based on the basic principle of conventional electronic belt scales, the structure of the overall belt conveyor is first optimized. By combining an arch frame with two belt support rollers, a longer weighing area can be achieved. Based on this, the arch frame can perform bidirectional deflection with the setting position of the weighing structure as the starting point. Its essence is that it can cooperate with the tension change of the belt during the material transportation process. Specifically, it cooperates with the linear movement of the belt support rollers on both sides of the arch frame in the vertical direction, so that the deflection direction and deflection angle of the arch frame can be directly fed back. Based on the above content, it is associated with the dynamic weighing value obtained by the weighing structure detection, and the associated bias weight coefficient, parameter point set and error comparison are established to calibrate and convert the dynamic weighing value obtained to improve the accuracy of the weighing data.

[0045] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electronic belt scale physical measurement and verification system, the physical measurement and verification system is used in a belt conveyor, characterized in that: The belt conveyor comprises an arch frame (1), a hopper (2), a belt (4), a driving roller assembly (5), a belt support roller (6), a displacement sensor (7) and a weighing structure (3); the physical measurement verification system comprises a dynamic parameter integration module, a dynamic analysis comparison module and a parameter group comparison module; The dynamic parameter integration module is used to record the dynamic weighing value in the weighing structure (3) and the auxiliary value associated with the displacement sensor (7), wherein the dynamic weighing value is represented by the relevant data obtained by the weighing structure (3) and is represented by Mt, and the auxiliary value is represented by the display value in the displacement sensor (7) and is represented by Ht, and the dynamic weighing value and the auxiliary value are sent to the dynamic analysis and comparison module; In the dynamic analysis and comparison module, the initial values ​​of the dynamic weight measurement value Mt and the auxiliary value Ht are first set, which are represented by Mo and Ho respectively, and then the dynamic analysis and comparison are performed in combination with the auxiliary value Mt, and the dynamic analysis and comparison process is sent to the parameter group comparison module; In the parameter group comparison module, firstly, the calculation method of the bias weight coefficient XHt is established through the dynamic analysis comparison module. According to the obtained bias weight coefficient XHt and the dynamic weight measurement value Mt, the parameter point set M·H between the bias weight coefficient and the dynamic weight measurement value is established. The parameter group comparison module is based on the parameter point set M·H in the dynamic analysis comparison module, and the calculation method of the error ratio Ki associated with the dynamic weight measurement value Mt is established in the parameter point set M·H. .

2. The electronic belt scale physical measurement and verification system according to claim 1 is characterized in that: The belt (4) performs material transmission via a driving roller assembly (5), and the supporting roller (6) is arranged in an internal position of the belt (4).

3. The electronic belt scale physical measurement and verification system according to claim 2, characterized in that: The belt-supporting rollers (6) located at the lower side of the hopper (2) are set in a fixed position, two of the belt-supporting rollers (6) are installed at the two ends of the upper end of the arch frame (1), and the belt-supporting rollers (6) installed on the arch frame (1) are set in a working position, and the other two belt-supporting rollers (6) located at the two ends of the outer side of the arch frame (1) are set in an auxiliary position.

4. The electronic belt scale physical measurement and verification system according to claim 3 is characterized in that: The static position of the belt support roller (6) in the working position is higher than the static position of the belt support roller (6) in the fixed position, and the dynamic position of the belt support roller (6) in the auxiliary position matches the dynamic position of the belt support roller (6) in the working position.

5. The electronic belt scale physical measurement and verification system according to claim 4, characterized in that: A displacement sensor (7) is installed at a position corresponding to the auxiliary position, and a transmission shaft of the displacement sensor (7) is connected to the belt support roller (6) in the auxiliary position.

6. The electronic belt scale physical measurement and verification system according to claim 5, characterized in that: The displacement sensor (7) is located directly below the middle section of the arch frame (1), and a transmission shaft of the displacement sensor (7) and the arch frame (1) are movably connected.

7. An electronic belt scale physical measurement and verification system according to any one of claims 1 to 6, characterized in that: according to - , - The positive and negative relationship between the two sets of values ​​determines the deflection direction of the arch frame (1). If the material moves from right to left on the belt (4), It is used to indicate that the arch frame (1) is deflected in the clockwise direction. The actual value of the material is ,when , the actual value of the material should be .

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