A tripod turning method

Abstract

The present application provides a tripod turning method, the first hook and the second hook are connected with the rear pull rod of the tripod, the independent hook is connected with the front pull rod of the tripod; the front pull rod of the tripod is turned over to the rear pull rod; at the same time, the first hook and the second hook drive one side of the tripod to descend, and the independent hook drives the other side of the tripod to ascend, so that the bottom of the turned-over tripod is parallel to the supporting surface; the turned-over tripod parallel to the supporting surface is turned over by the anti-overturning mechanism, the placing state of the tripod is changed by turning over, and the subsequent installation of the tripod is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a tripod turning method. BACKGROUND

[0002] In the assembly process of the crane, different parts need to be lifted by the crane for step-by-step assembly, such as a tripod. Before lifting and installing the tripod, if the tripod is not placed in a preset state, the tripod needs to be turned over first to change the placement state of the tripod.

[0003] As disclosed in the patent document with Chinese application number 202211174001.9 and application date 2022.9.26, a method for assembling a crane is disclosed, which discloses the lifting of a base, a resting rack, a tripod, and a lifting arm. However, it does not disclose a method for turning over the tripod. SUMMARY

[0004] The present application relates to the technical field of cranes, in particular to a tripod turning method.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows: a tripod turning method, comprising the following steps:

[0006] S1, presetting a first lifting lug, a second lifting lug, and a third lifting lug on the tripod, the second lifting lug being arranged on a pulley frame on one side of the tripod, the first lifting lug being arranged on a rear pull rod on one side of the tripod away from the pulley frame, and the third lifting lug being arranged on a front pull rod on the other side of the tripod; the third lifting lug is located between the second lifting lug and the first lifting lug.

[0007] S2, connecting the horizontal beam double hook and the independent lifting hook with the anti-overturning mechanism of the tripod parallel to the support surface; connecting the first lifting hook of the horizontal beam double hook with the first lifting lug through a steel wire rope, connecting the second lifting hook of the horizontal beam double hook with the second lifting lug through a steel wire rope, and connecting the independent lifting hook with the third lifting lug through a steel wire rope.

[0008] S3, horizontally lifting the tripod from the support surface by the first lifting hook, the second lifting hook, and the independent lifting hook; after the tripod is lifted to a preset height, performing S4.

[0009] S4, lifting the independent lifting hook, and lowering the first lifting hook and the second lifting hook to turn over the tripod.

[0010] When the anti-overturning mechanism of the tripod is perpendicular to the support surface, perform S5.

[0011] S5, stopping turning over the tripod, and simultaneously lowering the first lifting hook, the second lifting hook, and the independent lifting hook to lower the turned-over tripod onto the support surface.

[0012] In the above method, both the first and second hooks are connected to the rear tie rod of the tripod, and the independent hook is connected to the front tie rod of the tripod. This allows the front tie rod of the tripod to flip towards the rear tie rod. Simultaneously, the first and second hooks lower one side of the tripod, while the independent hook raises the other side, making the bottom of the tripod parallel to the support surface after flipping. By flipping the tripod so that the anti-tipping mechanism is parallel to the support surface, the placement of the tripod is changed, facilitating subsequent installation.

[0013] Furthermore, the method for determining the first lug and the second lug includes the following steps;

[0014] S1.1, Preset the force F1 on the first hook and the force F2 on the second hook.

[0015] S1.2, Preset the position of the first lifting lug.

[0016] S1.3. Take the top of the tripod before it is flipped as the first plane, and the position of the center of gravity of the base projected onto the first plane as the origin. Establish a coordinate system, determine the coordinates of the first lifting lug in the coordinate system according to the position of the first lifting lug, and calculate the distance L1 between the coordinates of the first lifting lug and the origin of the coordinate system.

[0017] S1.4, through Calculate the distance L2 between the origin of the coordinate system and the second lifting lug to determine the position range of the second lifting lug.

[0018] S1.5. Determine the coordinates of the second lifting lug in the coordinate system along the horizontal direction of the first lifting lug on the rear tie rod according to the position range of the second lifting lug; then determine the position of the second lifting lug on the pulley frame by the distance between the top of the pulley frame and the first plane.

[0019] The above method achieves force balance between the first hook and the second hook, ensuring that the torques of the first lifting lug and the origin of the coordinate system are equal. The position range of the second lifting lug is calculated using the torque of the first lifting lug and the origin of the coordinate system. Then, the coordinates of the second lifting lug in the coordinate system are determined, and finally, the coordinates of the second lifting lug in the coordinate system are converted into its position on the pulley frame. The method is simple.

[0020] Furthermore, the method for determining the third lug includes the following steps;

[0021] S1.6 Determine the midpoint of the force between the first and second lifting lugs, and determine the distance L3 between the origin of the coordinate system and the midpoint of the force.

[0022] S1.7, preset the force F4 of the independent hook; preset the distance L5 between the midpoint of the force and the third lug.

[0023] S1.8, Through Calculate the distance L4 between the third lifting lug and the origin of the coordinate system to determine the position range of the third lifting lug; F3 is the sum of the forces of the first lifting hook and the second lifting hook.

[0024] S1.9. Determine the coordinates of the third lifting lug in the coordinate system according to the position range of the third lifting lug on the front pull rod.

[0025] S1.10. Determine the position of the third lifting lug at the bottom of the front pull rod according to the distance between the bottom of the tripod before turning over and the first plane.

[0026] The above method achieves force balance between the double hooks of the cross beam and the independent lifting hook, and the moment of the force center point and the origin of the coordinate system is equal to the moment of the third lifting lug and the origin of the coordinate system. The position range of the third lifting lug is calculated by the moment of the force center point and the origin of the coordinate system, and then the coordinates of the third lifting lug in the coordinate system are determined, which is simple.

[0027] Further, in S1.5, the coordinates of the second lifting lug in the coordinate system are determined. Specifically, the coordinates of the second lifting lug in the coordinate system are determined by the intersection point of the end of the rear pull rod away from the first lifting lug and L2 along the horizontal direction of the first lifting lug.

[0028] The above method determines the coordinates of the second lifting lug at the other end of the rear pull rod away from the first lifting lug, and the second lifting lug is arranged away from the first lifting lug, so that the tripod can be stably lifted.

[0029] Further, S1.9 specifically determines the coordinates of the third lifting lug in the coordinate system by the intersection point of L4 and L5 on the front pull rod. The coordinates of the third lifting lug are determined by the intersection point of the two ranges, which is simple. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a top view of the tripod before turning over in the present application.

[0031] Figure 2 It is a front view of the tripod before turning over in the present application.

[0032] Figure 3 It is a front view of the tripod after turning over in the present application.

[0033] Figure 4 It is a flowchart of the present application. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0035] As shown in the drawings, Figures 1-4 A tripod turning method, comprising the following steps:

[0036] S1, preset first lifting lug 11, second lifting lug 12 and third lifting lug 13 on tripod 1, second lifting lug 12 is arranged on pulley frame 14 on one side of tripod 1, first lifting lug 11 is arranged on one end of rear pull rod 15 away from pulley frame 14 on one side of tripod 1, and third lifting lug 13 is arranged on front pull rod 16 on the other side of tripod 1; third lifting lug 13 is located between second lifting lug 12 and first lifting lug 11.

[0037] S2, cross beam double hook 2 and independent lifting hook 3 are connected with tripod 1 parallel to anti-overturning mechanism 17 and supporting surface; first lifting hook 21 of cross beam double hook 2 is connected with first lifting lug 11 through steel wire rope, second lifting hook 22 of cross beam double hook 2 is connected with second lifting lug 12 through steel wire rope, and independent lifting hook 3 is connected with third lifting lug 13 through steel wire rope.

[0038] S3, first lifting hook 21, second lifting hook 22 and independent lifting hook 3 horizontally hoist tripod 1 from the supporting surface; after tripod 1 is lifted to the preset height, S4 is performed.

[0039] S4, independent lifting hook 3 is lifted, first lifting hook 21 and second lifting hook 22 are lowered, so that tripod 1 is overturned; when anti-overturning mechanism 17 of tripod 1 is perpendicular to the supporting surface, S5 is performed.

[0040] S5, stop overturning tripod 1, first lifting hook 21, second lifting hook 22 and independent lifting hook 3 are lowered at the same time, and the overturned tripod 1 is lowered to the supporting surface.

[0041] In the above method, first lifting hook 21 and second lifting hook 22 are connected with rear pull rod 15 of tripod 1, and independent lifting hook 3 is connected with front pull rod 16 of tripod 1; the front pull rod 16 of tripod 1 is overturned to the rear pull rod 15; at the same time, one side of tripod 1 is lowered by first lifting hook 21 and second lifting hook 22, and the other side of tripod 1 is lifted by independent lifting hook 3, so that the bottom of the overturned tripod 1 is parallel to the supporting surface; by overturning the tripod 1 parallel to the anti-overturning mechanism 17 and the supporting surface, the placing state of the tripod 1 is changed by overturning, and the subsequent installation of the tripod 1 is facilitated.

[0042] The method for determining first lifting lug 11, second lifting lug 12 and third lifting lug 13 in the above method comprises the following steps:

[0043] S1.1, preset the force F1 of first lifting hook 21 and the force F2 of second lifting hook 22.

[0044] S1.2, preset the position of first lifting lug 11.

[0045] S1.3, with the top of the tripod 1 before overturning as a first plane J, and the position of the gravity center 10 of the base projected to the first plane J as an origin, a coordinate system is established, the coordinates of the first lifting lug 11 in the coordinate system are determined according to the position of the first lifting lug 11, and the distance L1 between the coordinates of the first lifting lug 11 and the origin of the coordinate system is calculated. In this embodiment, the coordinate system is a plane coordinate system.

[0046] S1.4, by the distance L2 between the origin of the coordinate system and the second lifting lug 12 is calculated to determine the position range of the second lifting lug 12.

[0047] S1.5, the planar coordinates of the second lifting lug 12 in the coordinate system are determined by the intersection of the end of the rear pull rod 15 away from the first lifting lug 11 and L2 along the horizontal direction of the first lifting lug 11; then the height position of the second lifting lug 12 in the pulley frame 14 is determined by the distance between the top of the pulley frame 14 and the first plane J. The coordinates of the second lifting lug 12 are confirmed at the other end of the rear pull rod 15 away from the first lifting lug 11, and the second lifting lug 12 is arranged away from the first lifting lug 11 so that the tripod 1 can be stably lifted.

[0048] S1.6, the force receiving midpoint between the first lifting lug 11 and the second lifting lug 12 is determined, and the distance L3 between the origin of the coordinate system and the force receiving midpoint is determined. In this embodiment, the force receiving midpoint is the projection of the midpoint of the horizontal distance between the first lifting lug and the second lifting lug on the first plane.

[0049] S1.7, the force F4 of the independent lifting hook 3 is preset; the distance L5 between the force receiving midpoint and the third lifting lug is preset.

[0050] S1.8, by , the distance L4 between the third lifting lug 13 and the origin of the coordinate system is calculated to determine the position range of the third lifting lug 13; F3 is the sum of the forces of the first lifting hook 21 and the second lifting hook 22.

[0051] S1.9, the coordinates of the third lifting lug 13 in the coordinate system are determined by the intersection of L4 and L5 on the front pull rod 16. The planar coordinates of the third lifting lug 13 are determined by the intersection of the two ranges, which is simple.

[0052] S1.10, the position of the third lifting lug 13 at the bottom of the front pull rod 16 is determined according to the distance between the bottom of the tripod 1 before overturning and the first plane J. The spatial coordinates of the third lifting lug 13 are determined by the distance between the bottom of the tripod 1 before overturning and the first plane J, and the height position of the coordinates of the third lifting lug 13 is adjusted.

[0053] The above method realizes force balance between the first hook 21 and the second hook 22, and the moment of force of the first lug 11 and the origin of the coordinate system is equal to the moment of force of the second lug 12 and the origin of the coordinate system; the position range of the second lug 12 is calculated through the moment of force of the first lug 11 and the origin of the coordinate system, then the coordinates of the second lug 12 on the rear pull rod 15 are determined, and then the coordinates of the second lug 12 in the coordinate system are converted into the position on the pulley frame 14. The force balance between the beam double hook 2 and the independent hook 3 is realized, and the moment of force of the force balance point and the origin of the coordinate system is equal to the moment of force of the third lug 13 and the origin of the coordinate system; the position range of the third lug 13 is calculated through the moment of force of the force balance point and the origin of the coordinate system, then the coordinates of the third lug 13 are determined, then the coordinates of the third lug 13 in the coordinate system are converted into the position at the bottom of the front pull rod 16, and the method is simple.

[0054] The second lug and the third lug in the first plane are calculated through the projection position of the second lug in the first plane and the projection position of the third lug in the first plane, then the height position of the second lug is determined according to the distance between the preset position of the second lug and the first plane, and the height position of the third lug is determined according to the distance between the preset position of the third lug and the first plane, so that the accuracy is high.

[0055] The working principle of the present application is that the first hook and the second hook are connected with the rear pull rod of the tripod, and the independent hook is connected with the front pull rod of the tripod; the front pull rod of the tripod is realized to overturn the rear pull rod; at the same time, the first hook and the second hook drive one side of the tripod to descend, and the independent hook drives the other side of the tripod to ascend, so that the bottom of the overturned tripod is parallel to the supporting surface, the overturned tripod is overturned through the anti-overturning mechanism and the supporting surface, the placing state of the tripod is changed through overturning, and the subsequent installation of the tripod is facilitated.

Claims

1. A method of turning a tripod over, characterized by: The method comprises the following steps: S1, presetting a first lifting lug, a second lifting lug and a third lifting lug on the tripod, the second lifting lug is arranged on the pulley frame on one side of the tripod, the first lifting lug is arranged on the rear pull rod away from the pulley frame on one side of the tripod, and the third lifting lug is arranged on the front pull rod on the other side of the tripod; the third lifting lug is located between the second lifting lug and the first lifting lug; S2, the cross beam double hooks and the independent lifting hook are connected with the tripod parallel to the supporting surface; the first lifting hook of the cross beam double hooks is connected with the first lifting lug through a steel wire rope, the second lifting hook of the cross beam double hooks is connected with the second lifting lug through a steel wire rope, and the independent lifting hook is connected with the third lifting lug through a steel wire rope; S3, the first lifting hook, the second lifting hook and the independent lifting hook horizontally lift the tripod from the supporting surface; after the tripod is lifted to a preset height, S4 is performed; S4, the independent lifting hook is lifted, the first lifting hook and the second lifting hook are lowered, so that the tripod is turned over; When the anti-overturning mechanism of the tripod is perpendicular to the supporting surface, S5 is performed; S5, stop turning over the tripod, the first lifting hook, the second lifting hook and the independent lifting hook are lowered at the same time, and the turned-over tripod is lowered onto the supporting surface; the method for determining the first lifting lug and the second lifting lug comprises the following steps: S1.1, presetting the force F1 of the first lifting hook and the force F2 of the second lifting hook; S1.2, presetting the position of the first lifting lug; S1.3, taking the top of the tripod before turning over as a first plane and the position of the gravity center of the base projected onto the first plane as an origin, a coordinate system is established, the coordinates of the first lifting lug in the coordinate system are determined according to the position of the first lifting lug, and the distance L1 between the coordinates of the first lifting lug and the origin of the coordinate system is calculated; S1.4, by A distance L2 between the origin of the coordinate system and the second lifting lug is calculated to determine a position range of the second lifting lug. S1.5, the coordinates of the second lifting lug in the coordinate system are determined according to the position range of the second lifting lug on the rear pull rod in the horizontal direction of the first lifting lug; then the position of the second lifting lug on the pulley frame is determined through the distance between the top of the pulley frame and the first plane.

2. The method of claim 1, wherein: The method for determining the third lifting lug comprises the following steps: S1.6, determining the force midpoint between the first lifting lug and the second lifting lug, and determining the distance L3 between the origin of the coordinate system and the force midpoint; S1.7, presetting the force F4 of the independent lifting hook; presetting the distance L5 between the force midpoint and the third lifting lug; S1.8, by A distance L4 between the third lifting lug and the origin of the coordinate system is calculated to determine the position range of the third lifting lug; F3 is the sum of the forces of the first lifting hook and the second lifting hook; S1.9, determining the coordinates of the third lifting lug in the coordinate system according to the position range of the third lifting lug on the front pull rod, the distance L5 between the force midpoint and the third lifting lug; S1.10, determining the position of the third lifting lug at the bottom of the front pull rod according to the distance between the bottom of the tripod before turning over and the first plane.

3. The method of claim 2, wherein: In S1.5, the coordinates of the second lifting lug in the coordinate system are determined, specifically, the coordinates of the second lifting lug in the coordinate system are determined through the intersection of L2 and the horizontal direction of the first lifting lug.

4. The method of claim 3, wherein: S1.9 is specifically, the coordinates of the third lifting lug in the coordinate system are determined through the intersection of L4 and L5 on the front pull rod.

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