Device and method for automatically measuring camber of main beam of portal crane

Abstract

The invention discloses a portal crane main beam camber automatic measuring device and a measuring method.The portal crane main beam camber automatic measuring device comprises a mounting base, a hoisting base, a movable assembly and an automatic measuring sensor, the hoisting base is arranged on the mounting base, the movable assembly is rotatably arranged on the hoisting base, and the automatic measuring sensor is arranged on the mounting base; and the automatic measurement sensor is arranged on the movable assembly and is used for measuring the distances from the movable assembly to different point positions of the main beam. The whole structure is simple, automatic measurement at any time can be realized, the measurement efficiency and the measurement accuracy are effectively improved, manual assistance is not needed, the labor intensity is reduced, the main beam can be monitored in real time, and the safety is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of camber measurement technology, and particularly relates to an automatic camber measurement device and method for the main beam of a gantry crane. Background Technology

[0002] The mid-span camber of the main beam of a gantry crane is a key inspection item and a critical parameter determining the crane's performance. It requires regular re-inspection. Currently, the measurement of the main beam camber of a gantry crane relies solely on manual labor, which is cumbersome and time-consuming. Furthermore, manual measurement is closely related to the number and quality of workers and the measurement methods used, making it difficult to control the measurement errors. As the level of intelligence and automation of equipment increases, the shortcomings of the original measurement methods in terms of timely data collection and maintenance management are becoming increasingly apparent.

[0003] Therefore, providing an automatic measurement device and method for the camber of the main beam of a gantry crane is of great significance for improving measurement efficiency, reducing manual labor intensity, enhancing intelligent operation and maintenance, and increasing equipment safety. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the prior art, the present invention provides an automatic measuring device and method for measuring the camber of the main beam of a gantry crane.

[0005] The automatic camber measuring device for the main beam of a gantry crane of the present invention includes a mounting base, a lifting base, a movable component, and an automatic measuring sensor, wherein: the lifting base is disposed on the mounting base, the movable component is rotatably disposed on the lifting base to ensure that the movable component is always in a vertical state, and the automatic measuring sensor is disposed on the movable component to measure the distance from the movable component to different points on the main beam.

[0006] Furthermore, in the above-mentioned automatic camber measuring device for the main beam of the gantry crane, the mounting base includes a first mounting plate and a second mounting plate. One end of the first mounting plate is perpendicularly welded to one end of the second mounting plate, and the other end of the first mounting plate is fixed to a frame higher than the main beam. The middle part of the second mounting plate is perpendicularly welded to one end of the hoisting base near the first mounting plate.

[0007] Furthermore, in the above-mentioned automatic camber measuring device for the main beam of the gantry crane, the movable component includes a movable plate and a rotating shaft. The movable plate is arranged in an isosceles trapezoidal structure. A first shaft hole is provided on the movable plate, and a second shaft hole is provided at the other end of the hoisting seat. The first shaft hole and the second shaft hole are coaxial, and the rotating shaft passes through the first shaft hole and the second shaft hole in sequence.

[0008] Furthermore, in the above-mentioned automatic measurement device for the camber of the main beam of the gantry crane, the automatic measurement sensor includes a distance sensor, which is fixedly connected to the movable plate by bolts. There are no fewer than 6 distance sensors, one of which is set perpendicular to the main beam, and the other distance sensors are set at different angles to the required measurement points of the main beam.

[0009] Furthermore, in the above-mentioned automatic measurement device for the camber of the main beam of the gantry crane, the automatic measurement sensor includes a distance sensor and an angle sensor. The distance sensor is fixedly connected to the movable plate by bolts and is set perpendicular to the main beam. The angle sensor is fixed to the movable plate by bolts with the distance sensor as the measurement starting point.

[0010] The automatic measurement method for the camber of the main beam of the gantry crane of the present invention includes:

[0011] First, the automatic measurement sensor is fixed on the movable plate according to the camber position of the main beam. Then, the distance from the automatic measurement sensor to each measurement point on the main beam and the angle between the automatic measurement sensor and each measurement point are measured by the automatic measurement sensor.

[0012] Based on the distance from the automatic measurement sensor to each measurement point on the main beam and the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the distance from the automatic measurement sensor to each measurement point, the vertical height of the automatic measurement sensor to that measurement point on the main beam is calculated.

[0013] The vertical distance from the automatic measuring sensor to the horizontal starting point of the main beam is measured by the automatic measuring sensor, and compared with the vertical height value of the automatic measuring sensor to each measuring point of the main beam to obtain the relative height of each measuring point.

[0014] After obtaining the relative height of each measurement point, the camber of the main beam is derived by fitting the horizontal distance of each point relative to the horizontal starting point of the main beam.

[0015] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the vertical height from the automatic measurement sensor to the measurement point of the main beam is: ;

[0016] Where h represents the vertical height from the automatically measured sensor to the measurement point on the main beam. This indicates the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the cosine of the angle between the line perpendicular to the main beam's horizontal starting point and the line from the automatic measurement sensor to the measurement point.

[0017] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the relative height of the measurement point is: ;

[0018] Where H represents the relative height of the measurement point, H a represents the vertical distance from the automatic measurement sensor to the horizontal starting point of the main beam, and h represents the vertical height from the automatic measurement sensor to the measurement point on the main beam.

[0019] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the horizontal distance of each point relative to the horizontal starting point of the main beam is: ;

[0020] Where X represents the horizontal distance of each point relative to the horizontal starting point of the main beam, and L represents the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the sine value of the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the measurement point.

[0021] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, when fitting the relative height and horizontal distance, the formula is used. By fitting the data, the values ​​of coefficients m, n, and constant C can be obtained. Given the horizontal distance of any point, its height can be calculated, and then the magnitude of the camber of the entire main beam can be analyzed.

[0022] The automatic measuring device and method for measuring the camber of the main beam of the gantry crane of the present invention have the following advantages and beneficial effects:

[0023] The invention has a simple overall structure, can realize automatic measurement at any time, effectively improves measurement efficiency and accuracy, requires no manual assistance, reduces labor intensity, and can monitor the main beam in real time, effectively improving safety. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0025] Figure 1 This is a schematic diagram of the automatic camber measurement device for the main beam of the gantry crane of the present invention.

[0026] Figure 2 This is a schematic diagram illustrating the measurement principle of the automatic camber measuring device for the main beam of the gantry crane of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100: Main beam; 200: Frame;

[0029] 1: Mounting base; 11: First mounting plate; 12: Second mounting plate

[0030] 2: Lifting base 21: Second shaft hole

[0031] 3: Movable component 31: Movable plate 311: First shaft hole 32: Rotating shaft

[0032] 4: Automatic measurement sensor. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] like Figure 1 As shown, the automatic camber measuring device for the main beam of the gantry crane of the present invention includes a mounting base 1, a lifting base 2, a movable component 3, and an automatic measuring sensor 4, wherein: the mounting base 1 is fixed to the frame above the main beam by bolts, the lifting base 2 is set on the mounting base 1, the movable component 3 is rotatably set on the lifting base 2 to ensure that the movable component 3 is always in a vertical state, and the automatic measuring sensor 4 is set on the movable component 3 to measure the distance from the movable component 3 to different points on the main beam 100.

[0035] Furthermore, in the above-mentioned automatic measuring device for the camber of the main beam of the gantry crane, the mounting base 1 includes a first mounting plate 11 and a second mounting plate 12. One end of the first mounting plate 11 is vertically welded to one end of the second mounting plate 12, and the other end of the first mounting plate 11 is fixed to a frame higher than the main beam. The middle part of the second mounting plate 12 is vertically welded to one end of the hoisting base 2 on the side near the first mounting plate 11.

[0036] Furthermore, in the aforementioned automatic camber measuring device for the main beam of the gantry crane, the movable component 3 includes a movable plate 31 and a rotating shaft 32. The movable plate 31 is arranged in an isosceles trapezoidal structure, and a first shaft hole 311 is provided on the movable plate 31. A second shaft hole 21 is provided at the other end of the lifting base 2. The first shaft hole 311 and the second shaft hole 21 are coaxial. The rotating shaft 32 passes through the first shaft hole 311 and the second shaft hole 21 in sequence, thereby ensuring that the center line of the movable plate 31 is always perpendicular to the main beam, effectively ensuring the measurement accuracy.

[0037] Furthermore, in the above-mentioned automatic camber measurement device for the main beam of the gantry crane, the automatic measurement sensor 4 includes a distance sensor. The distance sensor is fixedly connected to the movable plate 31 by bolts. There are no fewer than 6 distance sensors. One distance sensor is set perpendicular to the main beam 100, and the other distance sensors are set at different angles to the required measurement points of the main beam 100. This ensures that the distance sensor, each measurement point, and the horizontal starting point of the main beam always form a right triangle, and the camber value is accurately measured using the principle of the right triangle.

[0038] Furthermore, in the above-mentioned automatic camber measurement device for the main beam of the gantry crane, the automatic measurement sensor 4 includes a distance sensor and an angle sensor. The distance sensor is fixedly connected to the movable plate 31 by bolts and is set perpendicular to the main beam 100. The angle sensor is fixed to the movable plate by bolts with the distance sensor as the measurement starting point, so that the distance sensor measures the distance from the distance sensor perpendicular to the starting point of the main beam. The angle sensor measures the distance to each measurement point on the main beam and the angle between each point and the starting point of the main beam, and accurately measures the camber value using the principle of right triangles.

[0039] like Figure 2 As shown, the automatic measurement method for the camber of the main beam of the gantry crane of the present invention includes:

[0040] First, the automatic measuring sensor is fixed on the movable plate according to the camber position of the main beam. The distance from the automatic measuring sensor to each measuring point on the main beam and the angle between the automatic measuring sensor and each measuring point are measured using the line perpendicular to the horizontal starting point of the main beam as the boundary. When measuring distance and angle, multiple distance measuring sensors can be set up corresponding to the measuring points on the main beam. During installation, the angle between each distance measuring sensor and the distance measuring sensor installed perpendicular to the starting end of the main beam is measured, and the distance to each measuring point is measured using the distance measuring sensor. Alternatively, one distance measuring sensor and one angle sensor can be set up. The distance perpendicular to the starting end of the main beam is measured using the distance measuring sensor, and the angle sensor is used to measure the angle between the starting end and each measuring point, as well as the distance from the angle sensor to each measuring point.

[0041] Based on the distance from the automatic measurement sensor to each measurement point on the main beam and the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the distance from the automatic measurement sensor to each measurement point, the vertical height of the automatic measurement sensor to that measurement point on the main beam is calculated.

[0042] The vertical distance from the automatic measuring sensor to the horizontal starting point of the main beam is measured by the automatic measuring sensor, and compared with the vertical height value of the automatic measuring sensor to each measuring point of the main beam to obtain the relative height of each measuring point.

[0043] After obtaining the relative height of each measurement point, the camber of the main beam is derived by fitting the horizontal distance of each point relative to the horizontal starting point of the main beam.

[0044] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the vertical height from the automatic measurement sensor to the measurement point of the main beam is: ;

[0045] Where h represents the vertical height from the automatically measured sensor to the measurement point on the main beam. This indicates the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the cosine of the angle between the line perpendicular to the main beam's horizontal starting point and the line from the automatic measurement sensor to the measurement point.

[0046] The principle is that the vertical height h is the adjacent side of the included angle α in a right triangle, according to the definition of the cosine function ( =adjacent side / hypotenuse), we can get h reflects the vertical distance of the measurement point relative to the current sensor and is an intermediate parameter for calculating the relative height.

[0047] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the relative height of the measurement point is: ;

[0048] Where H represents the relative height of the measurement point, H a represents the vertical distance from the automatic measurement sensor to the horizontal starting point of the main beam, and h represents the vertical height from the automatic measurement sensor to the measurement point on the main beam.

[0049] The principle is that H a H is the reference vertical distance at the starting point, and h is the vertical distance from the sensor to the measurement point. If the measurement point is higher than the starting point, h is less than H. a H represents the upward arch, which is the core parameter for measuring the arch, i.e., the height difference between the measurement point and the starting point. It is the ordinate of the subsequently fitted arch curve.

[0050] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, the horizontal distance of each point relative to the horizontal starting point of the main beam is: ;

[0051] Where X represents the horizontal distance of each point relative to the horizontal starting point of the main beam, and L represents the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the sine value of the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the measurement point.

[0052] The principle is that the distance L measured by the sensor is the hypotenuse of a right triangle, and the horizontal distance X is the side opposite the included angle α, according to the definition of the sine function ( =Opposite side / Hypoten side), we can get , where X is the x-coordinate of the subsequently fitted camber curve.

[0053] Furthermore, in the above-mentioned automatic measurement method for the camber of the main beam of the gantry crane, when fitting the relative height and horizontal distance, the formula is used. By fitting the data, the values ​​of coefficients m, n, and constant C can be obtained. Given the horizontal distance of any point, its height can be calculated, and then the magnitude of the camber of the entire main beam can be analyzed.

[0054] The principle is to obtain the horizontal distance (X) and relative height (H) of each point, thereby obtaining the coordinates (X) of each measurement point. B H B ), (X) C H C ), (X) D H D ), (X) E H E ), (X) F H F Substitute each coordinate point into the formula. The values ​​of coefficients m, n and constant C are obtained by fitting the curve, the mathematical model of the camber curve is determined, and the curvature of the fitted curve (determined by m), the location of the maximum camber and the height of the key location are used to evaluate whether the camber of the main beam meets the safety operation standards.

[0055] In summary, compared with the prior art, the automatic camber measuring device and method for the main beam of the gantry crane of the present invention has the following advantages and beneficial effects: the overall structure of the present invention is simple, it can realize automatic measurement at any time, effectively improves the measurement efficiency and accuracy, requires no manual assistance, reduces labor intensity, and can monitor the main beam in real time, effectively improving safety.

[0056] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic measuring device for the camber of the main beam of a gantry crane, characterized in that, The automatic camber measuring device for the main beam of the gantry crane includes a mounting base, a lifting base, a movable component, and an automatic measuring sensor. The lifting base is mounted on the mounting base, the movable component is rotatably mounted on the lifting base to ensure that the movable component is always in a vertical state, and the automatic measuring sensor is mounted on the movable component to measure the distance from the movable component to different points on the main beam.

2. The automatic measuring device for the camber of the main beam of a gantry crane according to claim 1, characterized in that, The mounting base includes a first mounting plate and a second mounting plate. One end of the first mounting plate is perpendicularly welded to one end of the second mounting plate, and the other end of the first mounting plate is fixed to a frame higher than the main beam. The middle part of the second mounting plate is perpendicularly welded to one end of the hoisting base near the first mounting plate.

3. The automatic measuring device for the camber of the main beam of a gantry crane according to claim 1, characterized in that, The movable component includes a movable plate and a rotating shaft. The movable plate is arranged in an isosceles trapezoidal structure and has a first shaft hole. The other end of the hoisting base has a second shaft hole. The first shaft hole and the second shaft hole are coaxial. The rotating shaft passes through the first shaft hole and the second shaft hole in sequence.

4. The automatic measuring device for the camber of the main beam of a gantry crane according to claim 3, characterized in that, The automatic measurement sensor includes a distance sensor, which is fixedly connected to the movable plate by bolts. There are no fewer than 6 distance sensors, one of which is set perpendicular to the main beam, and the other distance sensors are set at different angles to the required measurement points on the main beam.

5. The automatic measuring device for the camber of the main beam of a gantry crane according to claim 3, characterized in that, The automatic measurement sensor includes a distance sensor and an angle sensor. The distance sensor is fixedly connected to the movable plate by bolts and is set perpendicular to the main beam. The angle sensor is fixed to the movable plate by bolts with the distance sensor as the measurement starting point.

6. A measurement method using the automatic camber measuring device for the main beam of a gantry crane according to any one of claims 1 to 5, characterized in that, The automatic measurement method for the camber of the main beam of the gantry crane includes: First, the automatic measurement sensor is fixed on the movable plate according to the camber position of the main beam. Then, the distance from the automatic measurement sensor to each measurement point on the main beam and the angle between the automatic measurement sensor and each measurement point are measured by the automatic measurement sensor. Based on the distance from the automatic measurement sensor to each measurement point on the main beam and the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the distance from the automatic measurement sensor to each measurement point, the vertical height of the automatic measurement sensor to that measurement point on the main beam is calculated. The vertical distance from the automatic measuring sensor to the horizontal starting point of the main beam is measured by the automatic measuring sensor, and compared with the vertical height value of the automatic measuring sensor to each measuring point of the main beam to obtain the relative height of each measuring point. After obtaining the relative height of each measurement point, the camber of the main beam is derived by fitting the horizontal distance of each point relative to the horizontal starting point of the main beam.

7. The automatic measurement method for the camber of the main beam of a gantry crane according to claim 6, characterized in that, The vertical height from the automatic measurement sensor to the measurement point on the main beam is: ; Where h represents the vertical height from the automatically measured sensor to the measurement point on the main beam. This indicates the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the cosine of the angle between the line perpendicular to the main beam's horizontal starting point and the line from the automatic measurement sensor to the measurement point.

8. The automatic measurement method for the camber of the main beam of a gantry crane according to claim 7, characterized in that, The relative height of the measurement point is: ; Where H represents the relative height of the measurement point, H a represents the vertical distance from the automatic measurement sensor to the horizontal starting point of the main beam, and h represents the vertical height from the automatic measurement sensor to the measurement point on the main beam.

9. The automatic measurement method for the camber of the main beam of a gantry crane according to claim 8, characterized in that, The horizontal distances of each point relative to the horizontal starting point of the main beam are: ; Where X represents the horizontal distance of each point relative to the horizontal starting point of the main beam, and L represents the distance from the automatic measurement sensor to the measurement point on the main beam, as measured by the automatic measurement sensor. This represents the sine value of the angle between the automatic measurement sensor perpendicular to the horizontal starting point of the main beam and the measurement point.

10. The automatic measurement method for the camber of the main beam of a gantry crane according to claim 9, characterized in that, When fitting based on relative height and horizontal distance, the formula is used. By fitting the data, the values ​​of coefficients m, n, and constant C can be obtained. Given the horizontal distance of any point, its height can be calculated, and then the magnitude of the camber of the entire main beam can be analyzed.

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