A method of lifting a base

Abstract

The application provides a base hoisting method, when hoisting the base, the base is stably lifted by the first steel wire rope and the second steel wire rope acting on the base 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 the 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 the crane base processing technical field, specifically relates to a base hoisting 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 literature of Chinese application No. 201310003481.7, published on May 1, 2013, a super large cylinder segment hoisting process is disclosed, one: a gantry crane is slidably connected with an upper trolley and a lower trolley located at both ends; two: the upper and lower trolleys are connected with a plurality of lifting points arranged on the upper and lower surrounding walls of the cylinder segment, and the gantry crane is controlled to lift and hoist the cylinder segment away from 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 axis, and the cylinder segment is horizontally rotated by 180°; six: the cylinder segment is lifted and hoisted away from 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 upper trolley is connected with one end of the cylinder through a steel wire rope, and the lower trolley is connected with the other end of the cylinder through a steel wire rope. When the auxiliary hook of the lower trolley is loosened, the cylinder cannot maintain balance, and then the cylinder will swing around the connection between the steel wire rope and the upper trolley, and then the cylinder will shake in the air, which is easy to cause dislocation between the upper trolley and the cylinder. Meanwhile, during the lowering process of the cylinder, when the shaking cylinder contacts the ground, the friction is large, which will cause damage to the cylinder. SUMMARY

[0005] The present application provides a base hoisting method, the base is inclined under the action of its own gravity, and remains in the current state without shaking after being inclined, and has good stability; the base is turned over by 90° relative to the initial position through the cooperation of the second steel wire rope and the third lifting lug, which facilitates the turning over of the base.

[0006] To achieve the above object, the technical scheme of the present application is as follows: a base hoisting method, comprising the following steps:

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

[0008] S2, preset two first lifting lugs on the base, set a second lifting lug at one end of the top of the base, and set a third lifting lug at the other end of the bottom of the base; the two first lifting lugs are offset from the center of gravity of the base in the horizontal direction of the base, and the two first lifting lugs are symmetrically arranged about the center of gravity of the base.

[0009] S3, the two first lifting lugs are connected to the first lifting device through the first steel wire rope respectively, and the second lifting lug is connected to the second lifting device through the second steel wire rope.

[0010] S4, the first lifting device and the second lifting device hoist the base, and the base is hoisted horizontally; when the base is raised to a preset height, S5 is performed.

[0011] S5, increase the length of the second steel wire rope between the second lifting device and the second lifting lug, and under the action of the gravity of the base itself, the base tilts to one end.

[0012] S6, the second steel wire rope is separated from the second lifting lug and connected to the third lifting lug.

[0013] S7, shorten the length of the second steel wire rope between the second lifting device and the third lifting lug, so that the base is turned over 90° relative to the initial position.

[0014] The above method, when hoisting the base, the first steel wire rope and the second steel wire rope act on the base at the same time, so that the base rises stably, the second steel wire rope prevents the base from tilting during hoisting, and due to the offset of the first lifting lug from the center of gravity, when the length of the second steel wire rope increases, the base will tilt to the direction of its center of gravity with the first steel wire rope as the axis, and the base will tilt under the action of its own gravity, and then when the base completes the tilting, it will remain in the current state without shaking, with good stability; then the second steel wire rope and the third lifting lug cooperate to turn over the base, so that the base is turned over 90° relative to the initial position, and the base is converted from the initial vertical state to the horizontal state, which is convenient for subsequent processing of the base.

[0015] Further, in S2, the setting method of the first lifting lug and the second lifting lug comprises the following steps:

[0016] S2.1, preset the force F1 of the first lifting device and the force F2 of the second lifting device;

[0017] S2.2, preset the positions of the second lifting lug and the third lifting lug;

[0018] S2.3, determine the distance L2 between the second lifting lug and the center of gravity of the base;

[0019] S2.4, by calculate the distance L1 between the first lifting lug and the center of gravity of the base to determine the position of the first lifting lug.

[0020] S2.5, determining the position of the first lifting lug in the horizontal direction away from the second lifting lug along the gravity center of the base.

[0021] The above method, in order to realize the force balance between the first lifting device and the second lifting device, sets the force F1 of the first lifting device and the force F2 of the second lifting device; the distance L2 between the second lifting lug and the gravity center of the base is calculated by presetting the position of the second lifting lug, and the distance L1 between the first lifting lug and the gravity center of the base is converted into the position of the first lifting lug, which is simple.

[0022] Further, in S2.3, the coordinate system is established with the gravity center of the base as the origin, and the distance L2 between the second lifting lug and the gravity center of the base is determined according to the coordinates of the second lifting lug in the coordinate system; in S2.4, the coordinates of the first lifting lug in the coordinate system are determined according to the distance L1 between the first lifting lug and the gravity center of the base.

[0023] The above method determines the coordinates of the first lifting lug and the second lifting lug in the coordinate system, which is simple. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the base vertical lifting in the application.

[0025] Figure 2 It is a schematic diagram of the base after tilting in the application.

[0026] Figure 3 It is a schematic diagram of the base after overturning in the application.

[0027] Figure 4 It is a flow chart of the application. DETAILED DESCRIPTION

[0028] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0029] As shown in the drawings, Figures 1-4 A base hoisting method comprises the following steps:

[0030] S1, determining the gravity center of the base.

[0031] S2, presetting two first lifting lugs 1 on the base, setting a second lifting lug 2 at one end of the top of the base, and setting a third lifting lug 3 at the other end of the bottom of the base; the two first lifting lugs 1 are misaligned with the gravity center of the base in the horizontal direction of the base, and the two first lifting lugs 1 are symmetrically arranged about the gravity center of the base. In this embodiment, the first lifting lug 1 is misaligned with the gravity center of the base by moving away from the second lifting lug 2.

[0032] S3, the two first lifting lugs 1 are connected with the first lifting device 5 through the first steel wire rope 4 respectively, and the second lifting lug 2 is connected with the second lifting device 7 through the second steel wire rope 6.

[0033] S4, the first lifting device 5 and the second lifting device 7 hoist the base, the base is horizontally lifted; when the base rises to a preset height, S5 is performed.

[0034] S5, the length of the second steel wire rope 6 between the second lifting device 7 and the second lifting lug 2 is increased, and the base tilts to one end under the action of its own gravity.

[0035] S6, the second steel wire rope 6 is separated from the second lifting lug 2 and connected with the third lifting lug 3.

[0036] S7, the length of the second steel wire rope 6 between the second lifting device 7 and the third lifting lug 3 is shortened, and the base is turned over 90° relative to the initial position.

[0037] The above method, when hoisting the base, the first steel wire rope 4 and the second steel wire rope 6 act on the base at the same time, so that the base rises stably, the second steel wire rope 6 prevents the base from tilting during lifting, and the first lifting lug 1 is offset from the center of gravity, so that when the length of the second steel wire rope 6 increases, the base will tilt to the direction of its center of gravity with the first steel wire rope 4 as the axis, and the base will tilt under the action of its own gravity, and then when the base completes the tilting, it will remain in the current state without shaking, with good stability; then the second steel wire rope 6 cooperates with the third lifting lug 3 to turn over the base, so that the base is turned over 90° relative to the initial position, and the base is converted from the initial vertical state to the horizontal state, which is convenient for subsequent processing of the base.

[0038] In the above method,

[0039] In S2, the setting method of the first lifting lug 1 and the second lifting lug 2 comprises the following steps:

[0040] S2.1, preset the force F1 of the first lifting device 5 and the force F2 of the second lifting device 7;

[0041] S2.2, a coordinate system is established with the origin of the center of gravity of the base, and the coordinates of the second lifting lug 2 and the third lifting lug 3 in the coordinate system are preset;

[0042] S2.3, the distance L2 between the second lifting lug 2 and the center of gravity of the base is determined;

[0043] S2.4, by the distance L1 between the first lifting lug 1 and the center of gravity of the base is calculated, and the coordinate range of the first lifting lug 1 in the coordinate system is determined.

[0044] S2.5, the coordinates of the first lifting lug are determined along the horizontal direction away from the second lifting lug of the center of gravity of the base. The first lifting lug is offset from the center of gravity of the base, that is, the X coordinate of the first lifting point is different from the X coordinate of the center of gravity of the base.

[0045] The above method sets the force F1 of the first lifting device 5 and the force F2 of the second lifting device 7 to realize the force balance between the first lifting device 5 and the second lifting device 7; in the coordinate system, the distance L2 between the second lifting lug 2 and the gravity center of the base is calculated by presetting the coordinates of the second lifting lug 2, and then the distance L1 between the first lifting lug 1 and the gravity center of the base is converted into the coordinates of the first lifting lug 1, which is simple.

[0046] In one embodiment, the positions of the first lifting point, the second lifting point and the third lifting point are determined directly 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 proportionally enlarged to obtain the base body, and the positions of the first lifting point, the second lifting point and the third lifting point are determined on the base body according to the enlargement ratio. In the present embodiment, the positions of the first lifting point, the second lifting point and the third lifting point are determined directly on the body of the base.

Claims

1. A method of hoisting a base, characterized by: The method comprises the following steps: S1, determining the center of gravity of the base; S2, presetting two first lifting lugs on the base, setting a second lifting lug at one end of the top of the base, and setting a third lifting lug at the other end of the bottom of the base; the two first lifting lugs are located away from the center of gravity of the base in the horizontal direction of the base, and the two first lifting lugs are symmetrically arranged about the center of gravity of the base; S3, the two first lifting lugs are connected with the first lifting device through the first steel wire rope respectively, and the second lifting lug is connected with the second lifting device through the second steel wire rope; S4, the first lifting device and the second lifting device hoist the base, and the base is horizontally lifted; when the base is lifted to a preset height, S5 is performed; S5, the length of the second steel wire rope between the second lifting device and the second lifting lug is increased, and under the action of the gravity of the base itself, the base tilts to one end; S6, the second steel wire rope is separated from the second lifting lug and connected with the third lifting lug; S7, the length of the second steel wire rope between the second lifting device and the third lifting lug is shortened, so that the base is turned over by 90° relative to the initial position; the setting method of the first lifting lug and the second lifting lug in S2 comprises the following steps: S2.1, presetting the force F1 of the first lifting device and the force F2 of the second lifting device; S2.2, presetting the positions of the second lifting lug and the third lifting lug; S2.3, determining the distance L2 between the second lifting lug and the center of gravity of the base; S2.4、 by A distance L1 between the first lifting lug and the center of gravity of the base is calculated to determine a position range of the first lifting lug. S2.5, determining the position of the first lifting lug away from the second lifting lug in the horizontal direction of the center of gravity of the base.

2. A method of lifting a base as claimed in claim 1, wherein: In S2.3, a coordinate system is established with the center of gravity of the base as the origin, and the distance L2 between the second lifting lug and the center of gravity of the base is determined according to the coordinates of the second lifting lug in the coordinate system; In S2.4, the coordinates of the first lifting lug in the coordinate system are determined according to the distance L1 between the first lifting lug and the center of gravity of the base.

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