A method for determining a lifting point of a base

Abstract

The application provides a base hoisting method, when hoisting the base, the base is stably lifted by the action of the first steel wire rope and the second steel wire rope at the same time, the second steel wire rope prevents the base from tilting during lifting, and due to the offset of the first lifting lug from the gravity center, when the length of the second steel wire rope increases, the base will tilt to the direction of the gravity center with the first steel wire rope as the axis, the base tilts under the action of its own gravity, and then when the base completes tilting, it will remain in the current state without shaking, and the stability is good; then the base is turned over by cooperation of the second steel wire rope and the third lifting lug, so that the base is turned over by 90 DEG relative to the initial position, the base is converted from the initial vertical state to the horizontal state, and subsequent processing of the base is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to crane base processing, in particular to a base hoisting point determination method. BACKGROUND

[0002] The base of the crane is a large equipment, in the prior art, the base is processed by moving the processing equipment, but the work efficiency is low, in order to solve the work efficiency problem, the base needs to be hoisted to the processing table for processing, and the base needs to be turned over when processing the base. When hoisting the base, the base is moved by the travelling crane or the gantry crane.

[0003] As disclosed in the patent document with the Chinese application number 201310003481.7 and the publication date of 2013.5.1, a super large cylinder segment hoisting process is disclosed, one: a gantry crane is connected with an upper trolley and a lower trolley at both ends; two: the upper and lower trolleys are connected with several lifting points on the upper and lower surrounding walls of the cylinder segment, and the gantry crane is controlled to lift the cylinder segment off the ground; three: the cylinder segment is vertically in the air; four: the cylinder segment is lowered to be close to the ground; five: the main hook of the upper trolley is used as the shaft system, and the cylinder segment is horizontally rotated by 180°; six: the cylinder segment is lifted and hoisted off the ground; seven: the cylinder segment is leveled; eight: the main hook of the upper trolley and the auxiliary hook of the lower trolley are lowered, and the cylinder segment is placed on the total assembly platform, and the cylinder segment turning over and loading are completed.

[0004] In the hoisting process, the cylinder is turned over only by the lifting points at both ends of the cylinder, and the lifting points cannot be determined according to the center of gravity of the cylinder, so that the cylinder needs to be turned over with the support of the ground. SUMMARY

[0005] The present application provides a base hoisting point determination method, which determines the coordinates of the first lifting point through the center of gravity of the base, and the base is kept balanced in the inclined state when the base is hoisted by the first lifting point.

[0006] To achieve the above purpose, the technical scheme of the present application is: a base hoisting point determination method, comprising the following steps:

[0007] S1, determining the center of gravity of the base.

[0008] S2, setting a second lifting point on the top of one end of the base.

[0009] S3, establishing a coordinate system with the center of gravity of the base as the origin.

[0010] S4, determining the coordinates of the second lifting point in the coordinate system.

[0011] S5, determining the distance L2 between the second lifting point and the center of gravity of the base through the coordinates of the second lifting point.

[0012] S6, presetting the force F1 of the first lifting device and the force F2 of the second lifting device.

[0013] S7, calculating the distance L1 between the first lifting point and the gravity center of the base through F1*L1=F2*L2.

[0014] S8, determining the coordinate range of the first lifting point in the coordinate system through the distance L1 between the first lifting point and the gravity center of the base.

[0015] The above method determines the first lifting point and the second lifting point, and balances the force between the first lifting device and the second lifting device when the base is lifted by the first lifting point and the second lifting point. The second lifting point is used to lift the base horizontally before the base is turned over. In order to facilitate the turning over of the base, the position of the first lifting point is determined through the position of the second lifting point, and then when the base is lifted by the first lifting point alone, the base can be inclined while maintaining balance. The force F1 of the first lifting device and the force F2 of the second lifting device are set. The distance L2 between the second lifting lug and the gravity center of the base is calculated through the preset position of the second lifting lug, and then the distance L1 between the first lifting lug and the gravity center of the base is converted into the position range of the first lifting lug, which is a simple method. Through the calculated position range, when the first lifting point is set at different coordinates in the position range, the base is inclined by 45° relative to the initial position and maintains balance.

[0016] Further, in the coordinate system, the second lifting point is vertically mirrored with the gravity center of the base as the midpoint, and then horizontally mirrored to obtain the coordinates of the third lifting point.

[0017] The above method sets the third lifting point, which is located at the bottom of the other end of the base away from the second lifting point. The third lifting point is used for turning over the base.

[0018] Further, the coordinates of the first lifting point are determined along the horizontal direction of the gravity center of the base, and the first lifting point is misaligned with the base and away from the second lifting point.

[0019] The above method first determines the position of the first lifting point in the direction away from the second lifting point, so that when the base is lifted by the first lifting point alone, the base will be inclined towards the second lifting point, and the base will be inclined in one direction.

[0020] Further, the coordinates of the first lifting point are determined along the horizontal direction of the gravity center of the base, and the first lifting point is misaligned with the base and away from the third lifting point.

[0021] The above method first determines the position of the first lifting point in the direction away from the third lifting point, so that when the base is lifted by the first lifting point alone, the base will be inclined towards the third lifting point, and the base will be inclined in the other direction.

[0022] Further, the lifting lugs are arranged on the first lifting point, the second lifting point and the third lifting point. In this way, the first lifting device and the second lifting device are connected to the base through the steel wire ropes. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a schematic view of the base in the present application.

[0024] Fig. 2 It is a flow chart of the present application. DETAILED DESCRIPTION

[0025] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0026] As Figs. 1-2 shown, a base lifting point determination method comprises the following steps:

[0027] S1, the center of gravity 1 of the base is determined.

[0028] S2, the second lifting point 2 is arranged on the top of one end of the base.

[0029] S3, the coordinate system is established with the center of gravity of the base as the origin.

[0030] S4, the coordinates of the second lifting point 2 in the coordinate system are determined, and in the coordinate system, the second lifting point 2 is vertically mirrored with the center of gravity 1 of the base as the midpoint, and then horizontally mirrored to obtain the coordinates of the third lifting point 3 in the coordinate system.

[0031] S5, the distance L2 between the second lifting point 2 and the center of gravity of the base is determined through the coordinates of the second lifting point 2.

[0032] S6, the force F1 of the first lifting device and the force F2 of the second lifting device are preset.

[0033] S7, the distance L1 between the first lifting point 1 and the center of gravity of the base is calculated.

[0034] S8, the coordinate range of the first lifting point 1 in the coordinate system is determined through the distance L1 between the first lifting point 1 and the center of gravity of the base.

[0035] ​The first lifting point 1 and the second lifting point 2 are determined, and the first lifting point 1 and the second lifting point 2 are used to lift the base, and the force balance between the first lifting device 4 and the second lifting device 7, the second lifting point 2 is used to realize the horizontal lifting of the base before the base is turned over. In order to facilitate the turning over of the base, the position of the first lifting point 1 is determined by the position of the second lifting point 2, and then the base can be inclined when the base is lifted by the first lifting point 1 alone, and the balance is maintained in the inclined state, and the force F1 of the first lifting device 5 and the force F2 of the second lifting device 7 are set; the distance L2 between the second lifting lug 2 and the center of gravity of the base is calculated by presetting the position of the second lifting lug 2, and then the distance L1 between the first lifting lug 1 and the center of gravity of the base is converted into the position range of the first lifting lug, which is simple; through the calculated position range, and when the first lifting point is set at different coordinates in the position range, the base is inclined by 45° relative to the initial position and maintains balance.

[0036] If the base needs to be inclined to the second lifting point, the coordinates of the first lifting point 1 are determined in the horizontal direction of the center of gravity of the base, and the first lifting point 1 is misaligned with the base and away from the second lifting point 2. First, the position of the first lifting point 1 is determined in the direction away from the second lifting point 2, so that when the base is lifted only by the first lifting point 1, the base will be inclined to the second lifting point 2, and the base is inclined to one direction.

[0037] If the base needs to be inclined to the third lifting point 3, the coordinates of the first lifting point 1 are determined in the horizontal direction of the center of gravity of the base, and the first lifting point 1 is misaligned with the base and away from the third lifting point 3. First, the position of the first lifting point is determined in the direction away from the third lifting point, so that when the base is lifted only by the first lifting point, the base will be inclined to the third lifting point, and the base is inclined to the other direction.

[0038] In this embodiment, the coordinates of the first lifting point 1 are determined in the horizontal direction of the center of gravity of the base, and the first lifting point 1 is misaligned with the base and away from the second lifting point 2. The X coordinate of the first lifting point X is different from the X coordinate of the center of gravity of the base.

[0039] In one embodiment, the positions of the first lifting point, the second lifting point and the third lifting point are directly determined on the body of the base; in another embodiment, the first lifting point, the second lifting point and the third lifting point are drawn on the drawing of the base; then the drawing of the base is enlarged in proportion to obtain the body of the base, and the positions of the first lifting point, the second lifting point and the third lifting point are determined on the body of the base according to the enlargement ratio. In this embodiment, the positions of the first lifting point, the second lifting point and the third lifting point are directly determined on the body of the base.

[0040] In this embodiment, the lifting lugs are arranged on the first lifting point 1, the second lifting point 2 and the third lifting point 3. The first lifting device 5 is connected with the first lifting point 1 through the first steel wire rope 4, and the second lifting device 7 is connected with the second lifting point 2 or the third lifting point 3 through the second steel wire rope 6.

[0041] Through setting the third lifting point for the turning over of the base, when in use, the base is stably lifted through the simultaneous action of the first steel wire rope and the second steel wire rope, the second steel wire rope prevents the base from falling during lifting, and meanwhile, due to the offset of the first lifting lug from the gravity center, when the length of the second steel wire rope increases, the base will tilt towards the direction of its gravity center with the first steel wire rope as the axis, the base tilts under the action of its own gravity, and then when the tilting of the base is completed, it will remain in the current state without shaking, and the stability is good; then the second steel wire rope is separated from the second lifting point, and then the second steel wire rope is connected with the third lifting point, the second steel wire rope is tightened to turn over the base, so that the base is turned over by 90° relative to the initial position, and the base is converted from the initial vertical state to the horizontal state, thereby facilitating the subsequent processing of the base.

Claims

1. A method of determining a base hoist point, the method comprising: The method comprises the following steps: ​ S1, determining the center of gravity of the base; S2, setting a second lifting point on the top of one end of the base; S3, establishing a coordinate system with the center of gravity of the base as the origin; S4, determining the coordinates of the second lifting point in the coordinate system; S5, determining the distance L2 between the second lifting point and the center of gravity of the base through the coordinates of the second lifting point; S6, presetting the force F1 of the first lifting device and the force F2 of the second lifting device; S7、 by calculating the distance L1 between the first hanging point and the center of gravity of the base; S8, determining the coordinate range of the first lifting point in the coordinate system through the distance L1 between the first lifting point and the center of gravity of the base; in the coordinate system, vertically mirroring the second lifting point with the center of gravity of the base as the midpoint, and then horizontally mirroring to obtain the coordinates of the third lifting point; determining the coordinates of the first lifting point along the horizontal direction of the center of gravity of the base, and the first lifting point is misaligned with the base and away from the second lifting point; determining the coordinates of the first lifting point along the horizontal direction of the center of gravity of the base, and the first lifting point is misaligned with the base and away from the third lifting point.

2. A method of determining a lifting point for a base as claimed in claim 1, wherein: Lifting lugs are arranged on the first lifting point, the second lifting point and the third lifting point.

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