Intelligent tension detection method

Abstract

An intelligent tensioning detection method is to install a touch sensor on the jack assembly, set the initial position and the second angle measurement point, the first angle measurement point, the edge position 1 of the limit plate, the edge position 2 of the limit plate, and the edge position 3 of the limit plate on the limit plate, and measure the parameters of the above positions, and calculate the angle of the limit plate, the center of the limit plate, and the radius, and automatically control it by the control center. The advantage is that by automatically detecting the angle of the limit plate and the three-point coordinates of the edge of the limit plate, the control center can calculate the angle between the jack assembly and the limit plate, the center of the limit plate and the radius, and input these parameters to the control center for calculation, so as to control the XYZA four-axis positioning system to adjust the position of the jack assembly to the correct position and perform intelligent tensioning construction.

Description

Technical Field

[0001] The invention relates to the technical field of tensioning of prestressed construction, and in particular to an intelligent tensioning detection method. Background Art

[0002] In prestressed construction, it is necessary to pass steel strands between the jack assembly and the beam and tension them. The current construction method is to manually install the jack assembly to the front end of the beam, pass the strands and then tension them. These constructions require a lot of manual operation and constant disassembly and assembly of equipment, which is time-consuming, labor-intensive, inefficient, and unable to accurately measure some construction parameters. Summary of the invention

[0003] The object of the present invention is to provide an intelligent tensioning detection method which can automatically detect the angle between a jack assembly and a limit plate, the center point and the radius of the limit plate in an XYZA four-axis positioning system.

[0004] The technical solution disclosed in the present invention is:

[0005] An intelligent tension detection method comprises the following steps:

[0006] (1) Touch sensor installation steps: Install the touch sensor on the jack assembly at the output end of the XYZA four-axis positioning system, with the sensor head of the touch sensor facing the limit plate;

[0007] (2) Steps for setting the initial position of the limit plate and the second position point for measuring angle: Set the initial position and the second position point for measuring angle on the limit plate. The setting rule of this point is: with the initial position and the second position point for measuring angle as the starting point, the horizontal and vertical movement paths of the touch sensor head shall not interfere with the steel strand;

[0008] (3) Steps for setting the angle measurement position point of the limit plate: set the first angle measurement position point in the vertical direction starting from the initial position and the second angle measurement position point;

[0009] (4) Steps for detecting the contour edge of the limit plate: taking the initial position and the second position point of the angle measurement as the starting point, the edges of the limit plates on the left and right horizontal directions are respectively set as the limit plate edge position 1 and the limit plate edge position 2, and the edge of the limit plate at the upper end of the vertical direction is set as the limit plate edge position 3; or taking the initial position and the second position point of the angle measurement as the starting point, the edges of the limit plates on the left and right horizontal directions are respectively set as the limit plate edge position 1 and the limit plate edge position 2, and the edge of the limit plate at the lower end of the vertical direction is set as the limit plate edge position 3;

[0010] (5) Steps for detecting the angle of the limit plate: Extend the touch sensing head and move the jack along the Z axis. When the touch sensing head contacts the first position of the limit plate for measuring the angle, the jack stops and records the Z axis coordinate. The jack returns to the position before detection along the Z axis. The jack moves down along the Y axis by L. Extend the touch sensing head and move the jack along the Z axis. When the jack moves along the Z axis and the touch sensing head contacts the initial position and the second position for measuring the angle, the jack stops and records the Z axis coordinate. The inclination angle of the limit plate is obtained by calculation.

[0011] (6) Steps for detecting the center of the limit plate: the control sensing head is contacted with the limit plate edge position 1, the limit plate edge position 2, and the limit plate edge position 3 set in step (4), and the three coordinates of the above three points in the limit plate contour edge are automatically read, and then the coordinates of the center of the limit plate and the limit plate radius R are automatically calculated by the three measured coordinates; the four-axis positioning system automatically determines whether the calculated limit plate radius is consistent with the preset limit plate radius. If not, it is sent to the center counter for calculation. After calculation, it is input again to automatically read the three coordinates of the limit plate contour edge, and the above steps are repeated until the limit plate radius is consistent with the preset limit plate radius.

[0012] As a preferred solution, in step (5), the angle of the cross section of the jack assembly relative to the cross section of the limit plate is calculated by the following method: Angle A = ATAN (Z-axis two-point coordinate difference / Y-axis two-point distance difference).

[0013] The beneficial effect of the present invention is that by automatically detecting the angle of the limit plate and the three-point coordinates of the edge of the limit plate, the control center can calculate parameters such as the angle between the jack assembly and the limit plate, the center and radius of the limit plate, and input these parameters into the control center for calculation, thereby controlling the XYZA four-axis positioning system to adjust the position of the jack assembly to the correct position for intelligent tensioning construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the touch sensor of the present invention extending out to contact point C.

[0015] Figure 2 It is a schematic diagram of the touch sensor of the present invention in a retracted state.

[0016] Figure 3 It is a schematic diagram of the touch sensor of the present invention extending out to contact the lower right corner of the limit plate.

[0017] Figure 4 It is a schematic diagram of setting detection points on the limit plate of the present invention.

[0018] Figure 5 It is the structural diagram of the XYZA four-axis positioning control system to achieve movement.

[0019] Figure 6 yes Figure 5 Front view of .

[0020] Figure 7 yes Figure 5 Right view of .

[0021] Figure 8 This is a schematic diagram of measuring angles.

[0022] The parts list of the attached figure is as follows: 1. Limit plate, 2. XYZA four-axis positioning control system, 3. Touch sensor, 4. Electric cylinder assembly, 5. Jack assembly, 6. Steel wire rope, 22. Z-axis moving base, 23. X-axis guide rail, 24. X-axis moving base, 25. Z-axis servo motor and reducer, 26. Z-axis rack, 27. Z-axis driving gear, 28. X-axis servo motor and reducer, 29. X-axis driving gear, 210. X-axis rack, 211. Y-axis guide rail, 212. Steel wheel, 213. Chain, 214. Chain guide wheel, 215. Y-axis servo motor and electric cylinder, 216. Z-axis guide rail, A. 1st point of the edge position of the limit plate, B. Initial position and 2nd point of angle measurement, C. 1st point of angle measurement, D. 2nd point of the edge position of the limit plate, E. 3rd point of the edge position of the limit plate. DETAILED DESCRIPTION

[0023] The present invention will be further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , the steps of the present invention are:

[0025] (1) Touch sensor installation steps: Install the touch sensor 3 on the jack assembly 5 at the output end of the XYZA four-axis positioning system 2, with the sensor head of the touch sensor 3 facing the limit plate 1;

[0026] (2) Steps for setting the initial position of the limit plate and the second position point for measuring the angle: the initial position and the second position point B for measuring the angle are set on the limit plate. The setting rule of this point is: with the initial position and the second position point B for measuring the angle as the starting point, the horizontal and vertical moving paths of the touch sensor head shall not interfere with the steel strand 6. In this embodiment, point B is set at the lower right corner of the limit plate;

[0027] (3) Steps for setting the angle measurement position point of the limit plate: set the first angle measurement position point A in the vertical direction starting from the initial position and the second angle measurement position point;

[0028] (4) Step of detecting the edge of the limit plate contour: In this embodiment, the initial position and the second position point B of the angle measurement are used as the starting point, the edges of the limit plates on the left and right sides in the horizontal direction are respectively set as the limit plate edge position 1 point A and the limit plate edge position 2 point D, and the edge of the limit plate at the upper end in the vertical direction is set as the limit plate edge position 3 point E;

[0029] Similarly, the initial position and the second position point of the angle measurement can be used as the starting point, and the edges of the limit plates on the left and right horizontal directions are respectively set as the limit plate edge position 1 point A and the limit plate edge position 2 point D, and the edge of the limit plate at the lower end of the vertical direction is set as the limit plate edge position 3 point E;

[0030] (5) Steps for detecting the angle of the limit plate: Extend the touch sensor head, and move the jack along the Z axis. When the touch sensor head contacts the first angle measuring point C of the limit plate, the jack stops and records the Z axis coordinate. The jack returns to the position before detection along the Z axis. The jack moves down along the Y axis by L, and the touch sensor head is extended. The jack moves along the Z axis. When the jack moves along the Z axis and the touch sensor head contacts the initial position and the second angle measuring point B, the jack stops and records the Z axis coordinate. The inclination angle of the limit plate is obtained by calculation. The angle of the cross section of the jack assembly relative to the cross section of the limit plate is calculated as follows: Angle A = ATAN (Z axis two-point coordinate difference / Y axis two-point distance measurement difference), such as Figure 8 shown.

[0031] After obtaining the above angle, the control center makes adjustments, and the adjustment steps include:

[0032] 1) The XYZA servo system automatically corrects the angles of the jack assembly and the limit plate to keep them parallel by calculating the angle deviation;

[0033] 2) The XYZA servo system compares the limit plate center calculated by trigonometric function with the jack assembly center offset distance preset by the system, and automatically corrects the jack center and the limit plate center to keep them concentric.

[0034] (6) Steps for detecting the center of the limit plate: the control sensing head is contacted with the limit plate edge position 1 point A, the limit plate edge position 2 point D, and the limit plate edge position 3 point E respectively set in step (4), and the three coordinates of the above three points on the edge of the limit plate contour are automatically read. Then, the coordinates of the center of the limit plate and the radius R of the limit plate are automatically calculated according to the formula for calculating the center and radius of the three points on the circle based on the three measured coordinates; the four-axis positioning system automatically determines whether the calculated limit plate radius is consistent with the preset limit plate radius. If not, it is sent to the center counter for calculation. After calculation, it is input again to automatically read the three coordinates of the limit plate contour edge. Repeat the above steps until the limit plate radius is consistent with the preset limit plate radius.

[0035] In an intelligent tensioning detection mechanism of the present invention, a touch sensor is fixed on a jack assembly, and a sensing head of the touch sensor is directly facing a limit plate.

[0036] See also Figure 5 , 6 7. In the XYZA four-axis positioning control system of the present invention, the Z-axis guide rail 216 is connected to the Z-axis movable base 22, and the Z-axis servo motor and reducer 25, the Z-axis rack 26, and the Z-axis driving gear 27 constitute the Z-axis driving unit; the X-axis guide rail 23 is connected to the X-axis movable base 24, and the X-axis servo motor and reducer 28, the X-axis driving gear 29, and the X-axis rack 210 constitute the X-axis driving unit; the Y-axis guide rail 211, the steel wheel 212, the chain 213, the chain guide wheel 214, the Y-axis servo motor and the electric cylinder 215 constitute the Y-axis driving unit, and the electric cylinder assembly 4 drives the jack assembly to rotate to constitute the A-axis rotating mechanism.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An intelligent tension detection method, comprising the steps of: (1) Touch sensor installation steps: Install the touch sensor on the jack assembly at the output end of the XYZA four-axis positioning system, with the sensor head of the touch sensor facing the limit plate; (2) Steps for setting the initial position of the limit plate and the second position point for measuring angle: Set the initial position and the second position point for measuring angle on the limit plate. The setting rule of this point is: with the initial position and the second position point for measuring angle as the starting point, the horizontal and vertical movement paths of the touch sensor head shall not interfere with the steel strand; (3) Steps for setting the angle measurement position point of the limit plate: set the first angle measurement position point in the vertical direction starting from the initial position and the second angle measurement position point; (4) Steps for detecting the contour edge of the limit plate: taking the initial position and the second position point of the angle measurement as the starting point, the edges of the limit plates on the left and right horizontal directions are respectively set as the limit plate edge position 1 and the limit plate edge position 2, and the edge of the limit plate at the upper end of the vertical direction is set as the limit plate edge position 3; or taking the initial position and the second position point of the angle measurement as the starting point, the edges of the limit plates on the left and right horizontal directions are respectively set as the limit plate edge position 1 and the limit plate edge position 2, and the edge of the limit plate at the lower end of the vertical direction is set as the limit plate edge position 3; (5) Steps for detecting the angle of the limit plate: Extend the touch sensing head, and the jack moves along the Z-axis direction. When the touch sensing head contacts the first position of the limit plate for measuring the angle, the jack stops and records the Z-axis coordinate. The jack returns to the position before detection along the Z-axis. The jack moves down along the Y-axis by L, and the touch sensing head is extended. The jack moves along the Z-axis direction. When the jack moves along the Z-axis direction and the touch sensing head contacts the initial position and the second position for measuring the angle, the jack stops and records the Z-axis coordinate. The inclination angle of the limit plate is obtained by calculation. (6) Steps for detecting the center of the limit plate: the control sensing head is contacted with the limit plate edge position 1, the limit plate edge position 2, and the limit plate edge position 3 set in step (4), and the three coordinates of the above three points in the limit plate contour edge are automatically read, and then the coordinates of the center of the limit plate and the limit plate radius R are automatically calculated by the three measured coordinates; the four-axis positioning system automatically determines whether the calculated limit plate radius is consistent with the preset limit plate radius. If not, it is sent to the center counter for calculation. After calculation, it is input again to automatically read the three coordinates of the limit plate contour edge, and the above steps are repeated until the limit plate radius is consistent with the preset limit plate radius.

2. The intelligent tension detection method according to claim 1, characterized in that: In the step (5), the angle of the cross section of the jack assembly relative to the cross section of the limit plate is calculated by the following calculation method: Angle A = ATAN (Z-axis two-point coordinate difference / Y-axis two-point distance difference).

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