Auxiliary equipment for accurate measurement of rubber conveying belt

Abstract

The invention discloses an auxiliary device for accurate measurement of a rubber conveying belt, and belongs to the technical field of measurement. Comprising a fixing frame, a multi-axis mechanical arm and a measuring table parallel to the horizontal plane are installed on the fixing frame, a visual camera used for measuring the conveying belt is installed at the output end of the multi-axis mechanical arm, and the two adjusting assemblies comprise rotatable supporting columns used for adjusting the conveying belt to be perpendicular to the measuring table; the method is used for drawing edge lines of the conveying belt and calculating perimeter and thickness. A visual camera captures a continuous outer edge line of a conveying belt and calculates an edge tangent line, a tangent point vertical line perpendicular to the edge tangent line is drawn through a tangent point, the tangent point vertical line intersects with the other edge line of the conveying belt, a multi-axis mechanical arm drives the visual camera to move, and an identification center point moves to the edge line and moves along the edge line. And the processor records the edge line coordinates and calculates the perimeter and thickness of the conveyor belt, thereby realizing accurate measurement of the size of the conveyor belt.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and more particularly to precise measurement auxiliary equipment for rubber conveyor belts. Background Art

[0002] Measuring the length and thickness of rubber conveyor belts is crucial for ensuring proper operation, preventing failures, optimizing performance, complying with standards, and controlling costs. Currently, the circumference of rubber conveyor belts is measured by wrapping a measuring rope around the belt's perimeter. The length of the rope is then used to determine the belt's circumference. Thickness is measured by calipers at several points. Both these methods require manual measurement by the operator or the collaboration of multiple personnel, resulting in complex procedures, difficulty, and unsatisfactory accuracy. Therefore, we propose a precision measurement aid for rubber conveyor belts. Summary of the Invention

[0003] The purpose of the present invention is to provide a rubber conveyor belt precision measurement auxiliary device to solve the technical problems of the prior art in that the size measurement of rubber conveyor belts is difficult and has low accuracy.

[0004] The embodiment of the present invention provides a precise measurement auxiliary device for a rubber conveyor belt, comprising a fixed frame, a multi-axis manipulator and a measuring platform parallel to a horizontal plane are mounted on the fixed frame, and a visual camera for conveyor belt measurement is mounted at the output end of the multi-axis manipulator. Two sets of adjustment components, including rotatable support columns, are used to adjust the conveyor belt to be perpendicular to the measuring table. A processor for drawing the edge line of the conveyor belt and calculating the perimeter and thickness; The vision camera captures the continuous outer edge line of the conveyor belt and calculates the edge tangent. A perpendicular line perpendicular to the edge tangent is drawn through the tangent point so that the perpendicular line intersects with another edge line of the conveyor belt. The multi-axis manipulator drives the vision camera to move the recognition center point to the edge line and moves along the edge line. The processor records the edge line coordinates and calculates the circumference and thickness of the conveyor belt.

[0005] As a further description of the above technical solution, the adjustment assembly also includes support plates, one group of support plates is slidably connected to the fixing frame, and the other group of support plates is fixedly mounted on the fixing frame. The fixing frame is slidably connected to a support block perpendicular to the horizontal plane, and the support block is rotatably connected to a first support shaft and a second support shaft. The support column is rotatably connected to the first support shaft, the support column passes through the measuring table, an adjustment plate is slidably connected to the support plate, and the second support shaft is inserted into the adjustment plate and moves along the set track. The support plate is fixedly mounted with a fixing plate, and the support column is rotatably connected with a third support shaft. The third support shaft and the first support shaft are both plugged into the fixing plate and move along a set track. A telescopic cylinder is fixedly mounted on the fixed frame, a telescopic frame is mounted on an output shaft of the telescopic cylinder, and the two groups of adjustment plates are slidably connected via the telescopic frame.

[0006] As a further description of the above technical solution, an arc-shaped groove is opened and closed on the adjustment plate, the arc-shaped groove has a set height difference, and the second support shaft is inserted into the arc-shaped groove and moves along the arc-shaped groove.

[0007] As a further description of the above technical solution, an adjustment groove is opened on the fixed plate, and the adjustment groove includes a vertical groove perpendicular to the horizontal plane and an inclined groove connected to the vertical groove. The third support shaft and the first support shaft are both inserted into the adjustment groove and move along the adjustment groove.

[0008] As a further description of the above technical solution, the vertical slot and the inclined slot have the same width, and the diameters of the third support shaft and the first support shaft are equal to the width of the adjustment slot.

[0009] As a further description of the above technical solution, the telescopic frame includes a connecting block fixedly connected to the output shaft of the telescopic cylinder and a plurality of telescopic columns fixedly mounted on the connecting block, and the two sets of adjustment plates are slidably connected through the telescopic columns.

[0010] As a further description of the above technical solution, it also includes a hydraulic cylinder and a traction frame fixedly mounted on the fixed frame, The traction frame includes a traction plate fixedly mounted on the output shaft of the hydraulic cylinder, the traction plate is fixedly connected to the corresponding support plate, the traction plate is slidably connected to a limit block, the limit block is slidably connected to a limit pull rod, one end of the limit pull rod is fixedly mounted with a limit sleeve, the limit sleeve is plugged into the support column, and an elastic part for pushing the limit block is installed on the limit block.

[0011] As a further description of the above technical solution, a pressure sensor for detecting traction force is installed at the connection between the traction plate and the hydraulic cylinder.

[0012] As a further description of the above technical solution, two sets of adjustment columns are fixedly installed on the fixing frame, and two sets of limit frames are rotatably connected to the adjustment columns. The first limit column passes through the limit frame and the corresponding support column to fix the two ends of the support column. A second limiting column is inserted into the supporting column close to the hydraulic cylinder, and the limiting frame and the second limiting column are used for limiting the conveyor belt.

[0013] As a further description of the above technical solution, the center line of the two fixed points of the first limiting column and the support column is equal to the height of the hydraulic cylinder.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The present invention uses a visual camera to capture the continuous outer edge line of the conveyor belt and calculate the edge tangent. A tangent point perpendicular line perpendicular to the edge tangent is drawn through the tangent point, so that the tangent point perpendicular line intersects with another edge line of the conveyor belt. A multi-axis manipulator drives the visual camera to move the recognition center point to the edge line and moves along the edge line. The processor records the edge line coordinates and calculates the circumference and thickness of the conveyor belt, thereby achieving accurate measurement of the circumference and thickness of the rubber conveyor belt.

[0015] 2. When the adjusting plate of the present invention moves, the second support shaft rises under the guidance of the arc groove and drives the support block, the first support shaft, the support column and the third support shaft to rise. The first support shaft always moves upward in the vertical groove, and the third support shaft moves from the vertical groove to the inclined groove, thereby driving the support column to rotate a certain angle, thereby reducing the difficulty of the rubber conveyor belt being installed on the support column. When the adjusting plate returns, the support column rotates in the opposite direction to a vertical state, thereby adjusting the rubber conveyor belt from a horizontal state to a state perpendicular to the measuring table, reducing the difficulty of the visual camera to measure the rubber conveyor belt. By setting the support column to rise first and then rotate, the transmission components set on the surface of the measuring table can be reduced, thereby avoiding the problem of the visual camera's recognition difficulty being increased due to too many recognition lines on the surface of the measuring table during measurement, thereby improving the accuracy of measurement and recognition.

[0016] 3. The present invention can not only accurately measure the size of the rubber conveyor belt, but also test its tensile strength, thereby improving the flexibility of equipment measurement and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a rubber conveyor belt precision measurement auxiliary device disclosed in a preferred embodiment of the present invention; Figure 2 A schematic diagram of the installation position of the telescopic cylinder of the rubber conveyor belt precision measurement auxiliary equipment disclosed in a preferred embodiment of the present invention; Figure 3 This is a partial structural diagram of a rubber conveyor belt precision measurement auxiliary device disclosed in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the support column connection structure of the rubber conveyor belt precision measurement auxiliary equipment disclosed in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the installation position of the second support shaft of the rubber conveyor belt precision measurement auxiliary equipment disclosed in a preferred embodiment of the present invention; Figure 6 A schematic diagram of the structure of the adjustment groove of the rubber conveyor belt precision measurement auxiliary equipment disclosed in a preferred embodiment of the present invention; Figure 7 A schematic diagram of the rotation of a support column of a rubber conveyor belt precision measurement auxiliary device disclosed in a preferred embodiment of the present invention; Figure 8 A schematic diagram of the positions of the support columns and conveyor belt of a rubber conveyor belt precision measurement auxiliary device disclosed in a preferred embodiment of the present invention; Figure 9 This is a measurement principle diagram of a rubber conveyor belt precision measurement auxiliary device disclosed in a preferred embodiment of the present invention.

[0018] Explanation of the numbers in the figure: 1. Fixed frame; 2. Multi-axis manipulator; 3. Visual camera; 4. Measuring table; 5. Adjustment assembly; 6. Telescopic cylinder; 7. Telescopic frame; 8. Hydraulic cylinder; 9. Traction frame; 10. Second limiting column; 11. Adjusting column; 12. Limiting frame; 13. First limiting column; 41. Guide hole; 51. Support plate; 52. Support block; 53. First support shaft; 54. Support column; 55. Second support shaft; 56. Adjusting plate; 57. Arc groove; 58. Fixed plate; 59. Vertical groove; 71. Connecting block; 72. Telescopic column; 91. Traction plate; 92. Limiting block; 93. Limiting rod; 94. Limiting sleeve; 95. Elastic member; 510. Inclined groove; 511. Third support shaft; 512. First positioning hole; 513. Second positioning hole. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Reference Figures 1 to 9 This embodiment discloses a precise measurement auxiliary device for a rubber conveyor belt, comprising a fixed frame 1, on which a multi-axis manipulator 2 and a measuring platform 4 parallel to a horizontal plane are fixedly mounted. The multi-axis manipulator 2 has at least three axes. A visual camera 3 for conveyor belt size measurement is fixedly mounted at the output end of the multi-axis manipulator 2. The visual camera 3 is arranged perpendicular to the measuring platform 4, and a guide hole 41 is opened on the measuring platform 4.

[0021] Reference Figures 2 to 7, two groups of adjustment components 5 are installed on the fixed frame 1, and the adjustment component 5 includes a support plate 51. One group of support plates 51 is slidably connected to the fixed frame 1 through a guide rail and the sliding direction is perpendicular to the opening direction of the guide hole 41. The other group of support plates 51 is fixedly installed on the fixed frame 1, and the fixed frame 1 is slidably connected to a support block 52 perpendicular to the horizontal plane. The support block 52 is rotatably connected to a first support shaft 53 and a second support shaft 55. The first support shaft 53 is rotatably connected to a support column 54. The support column 54 is used to switch the horizontally placed rubber conveyor belt to a state perpendicular to the horizontal plane. It is also used to pull the rubber conveyor belt to move during the tensile strength test. The support column 54 passes through the measuring table 4. The support plate 51 is slidably connected to an adjustment plate 56. An arc-shaped groove 57 is opened and closed on the plate 56, and the arc-shaped groove 57 has a certain height difference. The second support shaft 55 is inserted in the arc-shaped groove 57 and moves along the arc-shaped groove 57. A fixed plate 58 is fixedly installed on the support plate 51, and an adjustment groove is provided on the fixed plate 58. The adjustment groove includes a vertical groove 59 perpendicular to the horizontal plane and an inclined groove 510 connected to the vertical groove 59. The vertical groove 59 and the inclined groove 510 are equal in width. A third support shaft 511 is rotatably connected to the support column 54. The diameters of the third support shaft 511 and the first support shaft 53 are equal to the width of the adjustment groove. The third support shaft 511 and the first support shaft 53 are both inserted in the adjustment groove and move along the adjustment groove. A first positioning hole 512 and a second positioning hole 513 are provided on the support column 54.

[0022] When the adjustment plate 56 moves, the second support shaft 55 is guided by the arc groove 57, and drives the support block 52, the first support shaft 53, the support column 54 and the third support shaft 511 to rise. The first support shaft 53 always moves upward in the vertical groove 59, and the third support shaft 511 moves from the vertical groove 59 to the inclined groove 510, thereby driving the support column 54 to rotate a certain angle, thereby reducing the difficulty of the rubber conveyor belt being mounted on the support column 54. When the adjustment plate 56 returns, the support column 54 rotates in the opposite direction to a vertical state, thereby adjusting the rubber conveyor belt from a horizontal state to a state perpendicular to the measuring platform 4, reducing the difficulty of the visual camera 3 in measuring the rubber conveyor belt. By setting the support column 54 to rise first and then rotate, the transmission components set on the surface of the measuring platform 4 can be reduced, thereby avoiding the problem of the visual camera 3 increasing the recognition difficulty due to too many recognition lines on the upper surface of the measuring platform 4 during measurement, thereby improving the accuracy of measurement and recognition.

[0023] Reference Figure 2 and Figure 3A telescopic cylinder 6 is fixedly mounted on the fixed frame 1. The output shaft of telescopic cylinder 6 is mounted on a telescopic frame 7. Telescopic frame 7 includes a connecting block 71 fixedly connected to the output shaft of telescopic cylinder 6 and a plurality of telescopic columns 72 fixedly mounted on connecting block 71. Telescopic columns 72 include sleeves and extension columns slidably connected to the sleeves. The sleeves are fixed to connecting block 71 and one adjustment plate 56, and the extension columns are fixed to the other adjustment plate 56. The output shaft of telescopic cylinder 6 drives telescopic frame 7 to move, thereby controlling the movement of the two sets of adjustment plates 56.

[0024] Reference Figures 1 to 3 , a hydraulic cylinder 8 is fixedly installed on the fixed frame 1, and the height of the hydraulic cylinder 8 is equal to the midline height of the distance between the first positioning hole 512 and the second positioning hole 513. A traction frame 9 is fixedly installed on the output end of the hydraulic cylinder 8, and the traction frame 9 includes a traction plate 91 fixedly installed on the output shaft of the hydraulic cylinder 8. The traction plate 91 is also fixedly connected to the adjacent support plate 51. The traction plate 91 passes through the measuring table 4 and moves in the guide hole 41. A pressure sensor for traction tension detection is installed at the connection between the traction plate 91 and the hydraulic cylinder 8. A limit block 92 is slidably connected to the traction plate 91, and a limit pull rod 93 is slidably connected to the limit block 92. One end of the limit pull rod 93 is fixedly installed with a limit sleeve 94, which is plugged into the support column 54. An elastic member 95 for pushing the limit block 92 is installed on the limit block 92. When the limit sleeve 94 is sleeved on the support column 54, the limit pull rod 93 abuts against the limit block 92 for limiting.

[0025] Two groups of adjusting columns 11 are fixedly installed on the fixing frame 1, and two groups of limiting frames 12 are rotatably connected to the adjusting columns 11. The first limiting column 13 is inserted into the limiting frame 12. The first limiting column 13 passes through the limiting frame 12 and the corresponding support column 54 to fix the two ends of the support column 54. The second limiting column 10 can be inserted into the first positioning hole 512 of the support column 54 close to the hydraulic cylinder 8. The limiting frame 12 and the second limiting column 10 can both be used to limit the bottom of the rubber conveyor belt during the tensile strength test to avoid interference between the rubber conveyor belt and parts protruding from the surface of the measuring platform 4.

[0026] The auxiliary equipment also includes a processor for drawing the edge line of the rubber conveyor belt and calculating the circumference and thickness. Specifically, the visual camera 3 obtains the image information of the rubber conveyor belt and transmits the image information to the processor. The processor performs noise reduction, segmentation and feature extraction on the image information to obtain the inner and outer edge lines, edge tangents, tangent points and tangent point perpendiculars of the rubber conveyor belt and the corresponding point and line coordinate information, and calculates the circumference and thickness of the rubber conveyor belt based on the point and line coordinate information.

[0027] Working principle: the output shaft of the hydraulic cylinder 8 drives the traction frame 9 to move, and then drives a group of adjustment components 5 to slide on the fixed frame 1, so that the distance between the two groups of support columns 54 is appropriate and less than half of the theoretical circumference of the rubber conveyor belt. The output shaft of the telescopic cylinder 6 pushes the telescopic frame 7 to drive the adjustment plate 56 to slide on the support plate 51. The second support shaft 55 is guided by the arc groove 57 to move from the bottom to the top and drive the support block 52 to slide upward, so that the first support shaft 53, the support column 54 and the third support shaft 511 rise. The first support shaft 53 always moves upward in the vertical groove 59, and the third support shaft 511 moves up in the vertical groove 59 first. In this process, the support column 54 rises until the bottom is completely higher than the measuring platform 4. When the third support shaft 511 moves from the vertical groove 59 to the inclined groove 510, the support column 54 rotates around the axis of the first support shaft 53, thereby reducing the height of the free end of the support column 54; The staff or mechanical equipment puts the rubber conveyor belt on the two support columns 54. The output shaft of the telescopic cylinder 6 drives the telescopic frame 7 and the adjustment component 5 to reset. The support column 54 rotates from the inclined state to the vertical state. At this time, the rubber conveyor belt is vertical on the measuring table 4. The staff adjusts the position of the rubber conveyor belt so that it is unfolded without folding, ensuring that the visual camera 3 can easily identify the boundary line. Figure 8 ; When measuring the circumference and thickness, the coordinate zero point of the multi-axis manipulator 2 is first calibrated. The multi-axis manipulator 2 is moved and the visual camera 3 is adjusted to be directly above the rubber conveyor belt so that the recognition area covers the thickness section of the rubber conveyor belt. The visual camera 3 captures the image information of the rubber conveyor belt and transmits the image information to the processor. The processor performs noise reduction, segmentation, and feature extraction on the image information, and then obtains the inner and outer edge lines of the rubber conveyor belt in the recognition area, several edge tangents, and tangent points. A tangent point perpendicular to the edge tangent is drawn through the tangent point. The two points where the tangent point perpendicular intersects with the edge line of the rubber conveyor belt are the thickness of the rubber conveyor belt. The recognition center point of the multi-axis manipulator 2 is moved until it coincides with the tangent point. The processor records the coordinates of the recognition center point at this time. The multi-axis manipulator 2 controls the visual camera 3 to move so that the recognition center point moves to the next tangent point. The processor records the coordinates of the recognition center point again. Through the above recording method, the recognition center point moves one circle along the edge line of the rubber conveyor belt. The processor draws and calculates the outer circumference and inner circumference of the rubber conveyor belt, and simultaneously calculates the thickness of the rubber conveyor belt at each tangent point, thereby achieving accurate measurement. This embodiment can also realize the measurement of rubber conveyor belts with irregular thickness, such as toothed belts with toothed inner sides, with high measurement accuracy and flexibility.

[0028] During the tensile strength test, push the limit rod 93 and compress the elastic member 95 so that the limit sleeve 94 is sleeved on the corresponding support column 54, rotate the upper limit frame 12, make the first limit column 13 pass through the limit frame 12 and the second positioning hole 513, fix the support column 54 and the limit frame 12, at this time the limit frame 12 is in a horizontal state, lift the rubber conveyor belt, rotate the lower limit frame 12, make the first limit column 13 pass through the limit frame 12 and the first positioning hole 512, fix the support column 54 and the limit frame 12, at this time the limit frame 12 is also in a horizontal state, the rubber conveyor belt is on the limit frame 12, and the second limit column 10 is inserted into the first positioning hole 512 of the support column 54 near the hydraulic cylinder 8 side to support the bottom of the rubber conveyor belt. The output shaft of the hydraulic cylinder 8 continuously drives the adjustment assembly 5 connected thereto to move, gradually increasing the distance between the two sets of support columns 54, thereby tensioning and pulling the rubber conveyor belt to test its tensile strength, and the pressure sensor records the maximum tensile value of the rubber conveyor belt.

[0029] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Rubber conveyor belt precision measurement auxiliary equipment, characterized by: The invention comprises a fixed frame (1), a multi-axis manipulator (2) and a measuring table (4) parallel to a horizontal plane are installed on the fixed frame (1), and a visual camera (3) for conveyor belt measurement is installed at the output end of the multi-axis manipulator (2). Two sets of adjustment components (5), including rotatable support columns (54), are used to adjust the conveyor belt to be perpendicular to the measuring table (4), A processor for drawing the edge line of the conveyor belt and calculating the perimeter and thickness; The visual camera (3) captures the continuous outer edge line of the conveyor belt and calculates the edge tangent, draws a tangent point perpendicular to the edge tangent through the tangent point, and makes the tangent point perpendicular intersect with another edge line of the conveyor belt. The multi-axis manipulator (2) drives the visual camera (3) to move, so that the recognition center point moves to the edge line and moves along the edge line. The processor records the edge line coordinates and calculates the circumference and thickness of the conveyor belt.

2. The rubber conveyor belt precision measurement auxiliary equipment according to claim 1 is characterized by: The adjustment assembly (5) further comprises support plates (51), one group of support plates (51) being slidably connected to the fixing frame (1), and another group of support plates (51) being fixedly mounted on the fixing frame (1), the fixing frame (1) being slidably connected to a support block (52) perpendicular to a horizontal plane, and the support block (52) being rotatably connected to a first support shaft (53) and a second support shaft (55), The support column (54) is rotatably connected to the first support shaft (53), the support column (54) passes through the measuring table (4), an adjustment plate (56) is slidably connected to the support plate (51), and the second support shaft (55) is plugged into the adjustment plate (56) and moves along a set track. A fixing plate (58) is fixedly mounted on the support plate (51), and a third support shaft (511) is rotatably connected to the support column (54). The third support shaft (511) and the first support shaft (53) are both plugged into the fixing plate (58) and move along a set trajectory. A telescopic cylinder (6) is fixedly mounted on the fixed frame (1), a telescopic frame (7) is mounted on the output shaft of the telescopic cylinder (6), and the two sets of adjustment plates (56) are slidably connected via the telescopic frame (7).

3. The rubber conveyor belt precision measurement auxiliary equipment according to claim 2, characterized in that: The adjustment plate (56) is provided with an arc-shaped groove (57) which is open and closed. The arc-shaped groove (57) has a set height difference. The second support shaft (55) is inserted into the arc-shaped groove (57) and moves along the arc-shaped groove (57).

4. The rubber conveyor belt precision measurement auxiliary equipment according to claim 2, characterized in that: The fixing plate (58) is provided with an adjustment slot, which includes a vertical slot (59) perpendicular to the horizontal plane and an inclined slot (510) connected to the vertical slot (59). The third support shaft (511) and the first support shaft (53) are both inserted into the adjustment slot and move along the adjustment slot.

5. The rubber conveyor belt precision measurement auxiliary equipment according to claim 4, characterized in that: The vertical groove (59) and the inclined groove (510) have the same width, and the diameters of the third support shaft (511) and the first support shaft (53) are equal to the width of the adjustment groove.

6. The rubber conveyor belt precision measurement auxiliary equipment according to claim 2, characterized in that: The telescopic frame (7) comprises a connecting block (71) fixedly connected to the output shaft of the telescopic cylinder (6) and a plurality of telescopic columns (72) fixedly mounted on the connecting block (71), and the two sets of adjustment plates (56) are slidably connected via the telescopic columns (72).

7. The rubber conveyor belt precision measurement auxiliary equipment according to claim 2, characterized in that: It also includes a hydraulic cylinder (8) and a traction frame (9) fixedly mounted on the fixed frame (1). The traction frame (9) includes a traction plate (91) fixedly mounted on the output shaft of the hydraulic cylinder (8), the traction plate (91) is fixedly connected to the corresponding support plate (51), a limiting block (92) is slidably connected to the traction plate (91), a limiting pull rod (93) is slidably connected to the limiting block (92), a limiting sleeve (94) is fixedly mounted on one end of the limiting pull rod (93), the limiting sleeve (94) is plugged into and matched with the support column (54), and an elastic member (95) for pushing up the limiting block (92) is mounted on the limiting block (92).

8. The rubber conveyor belt precision measurement auxiliary equipment according to claim 7, characterized in that: A pressure sensor for detecting traction force is installed at the connection between the traction plate (91) and the hydraulic cylinder (8).

9. The rubber conveyor belt precision measurement auxiliary equipment according to any one of claims 1 to 8, characterized in that: Two sets of adjusting columns (11) are fixedly mounted on the fixing frame (1), and two sets of limiting frames (12) are rotatably connected to the adjusting columns (11). The first limiting column (13) passes through the limiting frame (12) and the corresponding supporting column (54) to fix the two ends of the supporting column (54). A second limiting column (10) is inserted into the support column (54) close to the hydraulic cylinder (8), and the limiting frame (12) and the second limiting column (10) are used for limiting the conveyor belt.

10. The rubber conveyor belt precision measurement auxiliary equipment according to claim 9, characterized in that: The midlines of the two fixed points of the first limiting column (13) and the supporting column (54) are at the same height as the hydraulic cylinder (8).

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