Eight-rope field bridge lifting appliance leveling device and using method

Abstract

The invention discloses an eight-rope field bridge lifting appliance leveling device and a using method. The eight-rope field bridge lifting appliance leveling device comprises a lifting appliance, a trolley, an infrared positioning camera, a marker lamp, an electric turnbuckle, a control system and an eight-rope winding mechanism. A plurality of electric turnbuckles are mounted on the lifting appliance, the end parts of the electric turnbuckles are connected with an eight-rope winding mechanism, and a marker lamp is arranged on one side of each electric turnbuckle; the trolley is arranged on a track, the track is located on one side of the lifting appliance, and an infrared positioning camera is installed on the trolley. The eight-rope gantry crane lifting appliance can be quickly and automatically leveled, the adjusting accuracy is high, and then the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of engineering machinery, and particularly relates to an eight-rope field bridge hoist leveling device and a use method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The eight-rope anti-sway technology has an anti-sway effect that other traditional anti-sway technologies cannot match. Its principle is to use the geometric principle of triangle stability to change the traditional four-rope winding system into multiple completely symmetrical triangle systems, eliminate the pulley device on the sling frame, and make the wire rope appear in the form of an isosceles triangle in every direction, thus improving the rigidity of the suspension system.

[0004] The unique structure of the eight-rope anti-sway system makes the pulley winding on the crane trolley more complex than before. Furthermore, several wire ropes are wound in opposite directions around two pulleys, significantly impacting and reducing the lifespan of the wire ropes. Replacing the wire ropes requires repeated manual adjustments to ensure the levelness of the hoist and its parallelism relative to the trolley. This affects operational efficiency, places high demands on workers, and lengthens the time required for wire rope adjustments. Summary of the Invention

[0005] In response to the above problems, the present invention provides an eight-rope field bridge hoist leveling device and a method of use, which can quickly and automatically level the eight-rope field bridge hoist with high adjustment accuracy, thereby effectively improving work efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An eight-rope yard crane leveling device includes a crane, a trolley, an infrared positioning camera, a marker light, an electric turnbuckle, a control system, and an eight-rope winding mechanism; Several electric turnbuckles are installed on the spreader, the ends of the electric turnbuckles are connected to the eight-rope winding mechanism, and a marker light is set on one side of the electric turnbuckle; the trolley is set on a track, the track is on one side of the spreader, and an infrared positioning camera is installed on the trolley.

[0007] Furthermore, the control system is electrically connected to the infrared positioning camera, the marker light and the electric turnbuckle.

[0008] Furthermore, the eight-rope winding mechanism includes a steel wire rope, and the end of the steel wire rope is connected to the output end of the electric turnbuckle.

[0009] A method for using an eight-rope field bridge hoist leveling device comprises the following steps: After replacing the wire rope, the spreader is raised to the highest point and then placed on the ground to check its posture; Spreader posture detection includes spreader rotation angle detection, spreader translation distance detection, and spreader left and right inclination detection. After the detection is completed, the control system processes the detection data and obtains the electric turnbuckle to adjust the length of the wire rope; Repeat the normal lifting operation of the spreader several times, and then perform the spreader posture detection several times to determine whether the spreader posture detection meets the deviation. If it meets the deviation, the wire rope adjustment is completed; if it does not meet the deviation, the spreader is raised to the highest point again and placed on the ground for the spreader posture detection.

[0010] Furthermore, the control system adopts a PLC control system, which processes the detected data and feeds it back to the electric turnbuckle through the PLC control system, thereby adjusting the wire rope.

[0011] Furthermore, the infrared positioning camera identifies the positioning marker light through a visual algorithm, analyzes the sea and land side translation and angular deflection of the marker light, and then obtains the spreader rotation angle, spreader translation distance, and left and right inclination of the spreader.

[0012] Furthermore, the position of the marker light is detected by an infrared positioning camera, and then the tilt angle α of the spreader in the X-axis direction and the tilt angle β in the Y-axis direction are detected; the height difference of the locking pin surfaces on the opposite sides in the X-direction can be obtained by multiplying the dimension A in the spreader design by sinα, and the height difference of the locking pin surfaces on the same side in the Y-direction can be obtained by multiplying the dimension B in the spreader rack design by sinβ.

[0013] Furthermore, the spreader translation data C1 and C2 are detected by an infrared positioning camera, where C1 represents the translation distance of one end of the spreader and C2 represents the translation distance of the other end of the spreader. The deviation relative to the trolley track can be obtained by the value of the spreader translation data C1-C2.

[0014] Furthermore, when the height of one side of the spreader is higher than that of the other side, the height difference is calculated by the PLC controller based on the detected inclination of the spreader. At this time, the spreader is placed on the ground and the wire rope is in a relaxed state. The electric turnbuckle at one end is controlled to extend and the electric turnbuckle at the other end is controlled to retract, so that the heights of the two sides can be consistent.

[0015] Furthermore, when the horizontal height difference of the spreader is less than 10 mm and the distance between the spreader and the trolley track is less than 10 mm, the force on the wire rope can be made uniform, and the wire rope adjustment is completed.

[0016] Compared with the prior art, the present invention has the following advantages and positive effects: After the steel wire rope is replaced, the sling is raised to the highest point and then placed on the ground. The position of the marker light is detected by an infrared positioning camera, thereby detecting the posture of the sling, obtaining the sling rotation angle, sling translation distance and left and right inclination of the sling, and then processing them through a control system, so that the control system controls the electric spiral buckle to extend or retract, thereby adjusting the position of the steel wire rope, and then making the heights of the two sides of the sling consistent, thereby achieving sling leveling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 is a top view of the spreader of the present invention; Figure 2 It is a front view of the spreader of the present invention; Figure 3 This is a diagram of the installation position of the electric turnbuckle of the present invention; Figure 4 This is a diagram showing the connection between the electric turnbuckle and the eight-rope winding mechanism of the present invention; Figure 5 This is a flow chart of the method for using the eight-rope field bridge hoist leveling device of the present invention; In the figure: 1. Spreader; 2. Electric turnbuckle; 3. Eight-rope winding mechanism. DETAILED DESCRIPTION

[0019] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0020] The unique structure of the eight-rope anti-sway system makes the pulley winding on the crane trolley more complex than before. Furthermore, several wire ropes are wound in opposite directions around two pulleys, significantly impacting and reducing the lifespan of the wire ropes. Replacing the wire ropes requires repeated manual adjustments to ensure the levelness of the hoist and its parallelism relative to the trolley. This affects operational efficiency, places high demands on workers, and lengthens the time required for wire rope adjustments.

[0021] Example 1: The present invention will be described in detail below with reference to the accompanying drawings. The embodiment disclosed herein is an eight-rope field bridge hoist 1 leveling device, such as Figure 1 As shown, it includes a spreader 1, a trolley, an infrared positioning camera, a marker light, an electric turnbuckle 2, a control system and an eight-rope winding mechanism 3; Several electric turnbuckles 2 are installed on the spreader 1, the ends of the electric turnbuckles 2 are connected to the eight-rope winding mechanism 3, and a marker light is set on one side of the electric turnbuckle 2; the trolley is set on the track, the track is on one side of the spreader 1, and an infrared positioning camera is installed on the trolley.

[0022] The marker lights are located on the upper frame of the spreader 1. There are three marker lights arranged in a straight line. The position of the middle marker light corresponds to the infrared positioning camera.

[0023] Specifically, the electric turnbuckle 2 comprises a T-screw, a reduction gear, a motor, and an encoder. It can be extended or shortened based on PLC data. Adjustments are performed with the spreader 1 unloaded and placed on the ground. The selected electric turnbuckle 2 is relatively small in size and power for ease of installation. After adjustment, the self-locking capability of the T-screw ensures the turnbuckle will not disengage during lifting.

[0024] Through an electric drive device, such as a motor, electrical energy is converted into mechanical energy to drive the screw of the turnbuckle to rotate. Using the principle of screw transmission, the nut that matches it moves linearly along the axis of the screw, thereby achieving functions such as tightening, loosening or adjusting position.

[0025] Specifically, the infrared positioning camera is a device that uses infrared technology to achieve target positioning and monitoring. It can quickly and accurately determine the position of the target object. The marker light is a heat source. The infrared positioning camera can quickly detect the position of the marker light and then obtain the position information of the spreader 1.

[0026] The control system is electrically connected to the infrared positioning camera, the marker light and the electric turnbuckle 2. The eight-rope winding mechanism 3 includes a steel wire rope, and the end of the steel wire rope is connected to the output end of the electric turnbuckle 2.

[0027] Specifically, the control system controls the infrared positioning camera to start, turns on the marker light, and then detects the position of the marker light through the infrared positioning camera, determines the position information of the sling 1, processes the information, and then controls the electric turn buckle 2 to extend or retract the electric turn buckle 2 to adjust the position of the wire rope, thereby achieving leveling of the sling 1.

[0028] Specifically, the eight-rope winding mechanism 3 is primarily used in equipment such as cranes and typically consists of a drum, wire ropes, an upper pulley block, a hanger, and connectors. Eight wire ropes are drawn from the drum, with two wire ropes forming a group. After passing through the upper pulley block, they are connected to a connector, forming four inverted triangles.

[0029] like Figure 4 As shown, the eight steel ropes of the eight-rope winding mechanism 3 are connected to the electric turnbuckle 2.

[0030] Example 2: A method for using an eight-rope field bridge hoist 1 leveling device comprises the following steps: After replacing the wire rope, the spreader 1 is raised to the highest point and then placed on the ground to detect the posture of the spreader 1; The posture detection of the spreader 1 includes the detection of the rotation angle of the spreader 1, the detection of the translation distance of the spreader 1, and the detection of the left and right inclination of the spreader 1. After the detection is completed, the detection data is processed by the control system to obtain the length of the wire rope adjusted by the electric turnbuckle 2; Repeat the normal lifting operation of the spreader 1 multiple times, and then perform the spreader 1 posture detection multiple times to determine whether the spreader 1 posture detection meets the deviation. If it meets the deviation, the wire rope adjustment is completed; if it does not meet the deviation, the spreader 1 is raised to the highest point again and placed on the ground for the spreader 1 posture detection.

[0031] The control system adopts a PLC control system, which processes the detected data and feeds it back to the electric turnbuckle 2 through the PLC control system, thereby adjusting the wire rope.

[0032] The infrared positioning camera uses a visual algorithm to identify and locate the marker light, analyzes the sea and land side translation and angular deflection of the marker light, and then obtains the rotation angle of spreader 1, the translation distance of spreader 1, and the left and right inclination of spreader 1.

[0033] The position of the marker light is detected by an infrared positioning camera, and then the inclination angle α of the spreader 1 in the X-axis direction and the inclination angle β in the Y-axis direction are detected; the height difference of the locking pin surfaces on the opposite sides in the X-direction is obtained by multiplying the dimension A of the spreader 1 when it was designed by sinα, and the height difference of the locking pin surfaces on the same side in the Y-direction is obtained by multiplying the dimension B of the spreader 1 when it was designed by sinβ.

[0034] The infrared positioning camera is used to detect the translation data C1 and C2 of spreader 1. C1 represents the translation distance of one end of spreader 1, and C2 represents the translation distance of the other end of spreader 1. The deviation relative to the trolley track can be obtained by the value of the translation data C1-C2 of spreader 1.

[0035] When the height of one side of the spreader 1 is higher than that of the other side, the height difference is calculated by the PLC controller based on the detected inclination of the spreader 1. At this time, the spreader 1 is placed on the ground and the wire rope is in a relaxed state. The electric turnbuckle 2 at one end is controlled to extend and the electric turnbuckle 2 at the other end is controlled to retract, so that the heights of the two sides can be consistent.

[0036] Placing the spreader 1 on the ground can better test whether the spreader 1 is level. If it is level, the eight wire ropes should be uniformly stressed during the lifting process.

[0037] like Figure 3As shown in the figure, when the height of the AB side is higher than that of the CD side, the deflection angle of the AD direction of the spreader 1 is 1° according to the posture detection of the spreader 1. After PLC calculation, the height difference between the two sides is about 84mm. At this time, the spreader 1 system is placed in the right place, and the wire rope is kept in a relaxed state. The turnbuckles No. 1, 2, 3, and 8 in the figure are extended, and the turnbuckles No. 4, 5, 6, and 7 in the figure are shortened, so that the AB side can be adjusted to the same height as the CD side.

[0038] When the horizontal height difference of the spreader 1 is less than 10 mm and the distance between the spreader 1 and the trolley track is less than 10 mm, the force on the wire rope can be made uniform and the wire rope adjustment is completed.

[0039] The height difference between the four horizontal planes in points ABCD must be no greater than 10mm, and the distance between points B and C, and between points A and D, relative to the trolley track must be no greater than 10mm. After leveling, all eight wire ropes should be uniformly stressed. The weight detection system at the mobile support can also be used to determine if the wire ropes are properly adjusted.

[0040] Spreader rotation angle detection: When spreader 1 rotates, the linear arrangement of the three marker lights deflects, resulting in a change in angle relative to the initial position. An infrared positioning camera captures the real-time position of the three marker lights and uses a visual algorithm to calculate the angle between the marker light line and the initial baseline. This angle represents the spreader 1's rotation angle. For example, if the marker light line deflects 3° clockwise relative to its initial position, the spreader 1's rotation angle is 3°.

[0041] Lifter tilt detection: When lifter 1 tilts left or right, the marker lights at different positions will have a height difference. The tilt angle is calculated based on the geometric relationship between this height difference and the known dimensions of lifter 1. An infrared positioning camera identifies the vertical position difference of the marker lights and calculates the lifter's tilt angles α and β on the X-axis (opposite sides) and Y-axis (same side), respectively. If the height difference between the marker lights on either side of the X-axis is h1, and the lifter's design dimensions (the distance between the marker lights on either side) are A, the tilt angle α (X-axis tilt) can be inferred from the trigonometric relationship h1 = A × sinα. If the height difference between the marker lights on either side of the Y-axis is h2, and the lifter's design dimensions (the distance between the marker lights on the same side) are B, the tilt angle β (Y-axis tilt) can be inferred from the trigonometric relationship h2 = B × sinβ. These two angles directly reflect the degree of lifter 1's tilt.

[0042] Spreader translation distance detection: When spreader 1 translates, the three marker lights move horizontally (on both the land and sea sides). This displacement is the translation distance. The difference in translation between the marker lights at both ends reflects the deviation in parallelism with respect to the trolley track. An infrared positioning camera captures the horizontal position changes of the marker lights and records the translation amounts C1 and C2 of the marker lights at both ends of spreader 1 (e.g., ends A and B). Each translation amount (C1 or C2) is the translation distance of spreader 1 at the corresponding end. The translation difference (C1 - C2) reflects the deviation in parallelism with respect to the trolley track (the smaller the difference, the higher the parallelism).

[0043] All three tests are performed using a combination of an infrared positioning camera and a marker light. The marker light provides a reference position, while the infrared positioning camera captures its spatial position changes. A visual algorithm, combined with the known dimensions of spreader 1 (A, B, etc.), converts the marker light's raw data—including seaward and landward translation, angular deflection, and height difference—into the spreader's rotation angle, translation distance, and left-right tilt. This entire process requires no additional detection equipment; high-precision posture detection is achieved solely through visual positioning.

[0044] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. An eight-rope field crane leveling device, characterized in that: It includes a spreader, a trolley, an infrared positioning camera, a marker light, an electric turnbuckle, a control system and an eight-rope winding mechanism; Several electric turnbuckles are installed on the spreader, the ends of the electric turnbuckles are connected to the eight-rope winding mechanism, and a marker light is set on one side of the electric turnbuckle; the trolley is set on a track, the track is on one side of the spreader, and an infrared positioning camera is installed on the trolley.

2. The eight-rope field bridge hoist leveling device according to claim 1, characterized in that: The control system is electrically connected to the infrared positioning camera, the marker light and the electric turnbuckle.

3. The eight-rope field bridge hoist leveling device according to claim 1, characterized in that: The eight-rope winding mechanism includes a steel wire rope, and the end of the steel wire rope is connected to the output end of the electric turnbuckle.

4. A method for using the eight-rope field bridge hoist leveling device according to any one of claims 1 to 3, characterized in that: The following steps are involved: After replacing the wire rope, the spreader is raised to the highest point and then placed on the ground to check its posture; Spreader posture detection includes spreader rotation angle detection, spreader translation distance detection, and spreader left and right inclination detection. After the detection is completed, the control system processes the detection data and obtains the electric turnbuckle to adjust the length of the wire rope; Repeat the normal lifting operation of the spreader several times, and then perform the spreader posture detection several times to determine whether the spreader posture detection meets the deviation. If it meets the deviation, the wire rope adjustment is completed; if it does not meet the deviation, the spreader is raised to the highest point again and placed on the ground for the spreader posture detection.

5. The method for using the eight-rope field bridge hoist leveling device according to claim 4, characterized in that: The control system adopts a PLC control system, which processes the detected data and feeds it back to the electric turnbuckle through the PLC control system, thereby adjusting the wire rope.

6. The method for using the eight-rope field bridge hoist leveling device according to claim 4, characterized in that: The infrared positioning camera uses a visual algorithm to identify the positioning marker light, analyzes the sea and land side translation and angular deflection of the marker light, and then obtains the spreader rotation angle, spreader translation distance and left and right inclination of the spreader.

7. The method for using the eight-rope field bridge hoist leveling device according to claim 6, characterized in that: The position of the marker light is detected by an infrared positioning camera, and then the tilt angle α of the spreader in the X-axis direction and the tilt angle β in the Y-axis direction are detected; the height difference of the locking pin surfaces on the opposite sides in the X direction is obtained by multiplying the dimension A in the spreader design by sinα, and the height difference of the locking pin surfaces on the same side in the Y direction is obtained by multiplying the dimension B in the spreader rack design by sinβ.

8. The method for using the eight-rope field bridge hoist leveling device according to claim 7, characterized in that: The spreader translation data C1 and C2 are detected by an infrared positioning camera. C1 represents the translation distance of one end of the spreader, and C2 represents the translation distance of the other end of the spreader. The deviation relative to the trolley track can be obtained by the value of the spreader translation data C1-C2.

9. The method for using the eight-rope field bridge hoist leveling device according to claim 4, characterized in that: When the height of one side of the spreader is higher than that of the other side, the height difference is calculated by the PLC controller based on the detected spreader inclination. At this time, the spreader is placed on the ground and the wire rope is in a slack state. The electric turnbuckle at one end is controlled to extend and the electric turnbuckle at the other end is controlled to retract to make the heights of both sides consistent.

10. The method for using the eight-rope field bridge hoist leveling device according to claim 4, characterized in that: When the horizontal height difference of the spreader is less than 10mm and the distance between the spreader and the trolley track is less than 10mm, the force on the wire rope can be made uniform and the wire rope adjustment is completed.

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