CN-117399873-B - Butt joint method for suspension arms

CN117399873BCN 117399873 BCN117399873 BCN 117399873BCN-117399873-B

Abstract

The invention provides a boom butt joint method, which comprises a boom, wherein the boom comprises a boom front section, a main hook pulley frame and an auxiliary hook pulley frame, the boom front section is hung on a supporting column through a steel wire rope, then the main hook pulley frame is turned over through the steel wire rope, one side of the main hook pulley frame is in butt joint with the boom front section, the auxiliary hook pulley frame is hung on the other side of the main hook pulley frame, and meanwhile the auxiliary hook pulley frame and the main hook pulley frame are at the same height, so that the auxiliary hook pulley frame and the main hook pulley frame are in butt joint.

Inventors

Song Yaoxiang
SONG XINGXIANG
ZHAO XU
LI YAN
He zhongtian
LUO JIANHUA
YANG ZHENGUANG
QIN ZHENFENG

Assignees

中国船舶集团华南船机有限公司

Dates

Publication Date: 20260508
Application Date: 20231027

Claims (5)

1. The boom butt joint method comprises a boom, wherein the boom comprises a boom front section, a main hook pulley frame and an auxiliary hook pulley frame; the method also comprises the following steps: (1) Firstly, driving a steel wire rope to hoist the front section of the suspension arm to support columns with different heights through a crane; (2) Then the main hook pulley frame is turned over through a crane driving steel wire rope, so that the main hook pulley frame is turned over from a horizontal placement state to a vertical placement state, then the main hook pulley frame is moved to the front of the front section of the suspension arm, the axial height of the main hook pulley frame is consistent with that of the front section of the suspension arm, and then one side of the main hook pulley frame is in butt joint with the front section of the suspension arm; (3) The auxiliary hook pulley frame is hoisted to the other side of the main hook pulley frame through a crane driving steel wire rope, one end of the auxiliary hook pulley frame, which is in butt joint with the main hook pulley frame, is at the same height, one end of the auxiliary hook pulley frame, which is far away from the butt joint with the main hook pulley frame, is in an inclined upward state, and then the auxiliary hook pulley frame is in butt joint with the other side of the main hook pulley frame; (4) And welding gaps on two sides of the main hook pulley frame respectively, so that the front section of the suspension arm, the main hook pulley frame and the auxiliary hook pulley frame are connected into a whole.
2. The boom docking method as claimed in claim 1, wherein the step (1) further comprises the steps of: Firstly, hanging one shackle at one end of the front section of the suspension arm, hanging the other shackle at the other end of the front section of the suspension arm, and then enabling two steel wire ropes to be respectively hung on the two shackles through a hanging hook pocket; (1.2) enabling the crane to drive two steel wire ropes to hoist simultaneously, after a front section of the suspension arm is lifted away from the jig frame for a distance h, standing for a period of time t under static load, and then observing the stress condition of the front section of the suspension arm; And (1.3) driving the two steel wire ropes to lift simultaneously after no abnormality is observed, slowly descending one steel wire rope when the front section of the suspension arm is lifted to the upper part of the support column, and then adjusting the other steel wire rope to slowly descend simultaneously, so that the front section of the suspension arm is simultaneously placed on the support columns with different heights.
3. The boom docking method as claimed in claim 1, wherein the step (2) further comprises the steps of: (2.1) hanging one shackle on one side of the main hook pulley frame and the other shackle on the other side of the main hook pulley frame, and then enabling two steel wires to be respectively hung on the two shackles through a hanging hook pocket; (2.2) enabling the crane to drive the two steel wire ropes to hoist simultaneously, after the front section of the suspension arm is lifted away from the jig frame for a distance h, standing for a period of time t under static load, and then observing the stress condition of the main hook pulley frame; (2.3) driving one steel wire rope to slowly rise after no abnormality is observed, driving the other steel wire rope to slowly descend, turning the main hook pulley frame from a horizontal placing state to a vertical placing state, and then hanging to the front of one end of the front section of the suspension arm, which needs to be butted; And (2.4) simultaneously driving two steel wires to adjust the height of the main hook pulley frame so that the axial height of the main hook pulley frame is consistent with that of the front section of the suspension arm, then driving the steel wires to enable the main hook pulley frame to horizontally move to be in butt joint with the front section of the suspension arm, and enabling one side of the main hook pulley frame to be primarily fixed with the front section of the suspension arm through spot welding.
4. The boom docking method as claimed in claim 1, wherein the step (3) further comprises the steps of: (3.1) hanging one shackle on one end of the auxiliary hook pulley frame, hanging the other shackle on the other end of the auxiliary hook pulley frame, and then enabling two steel wire ropes to be respectively hung on the two shackles through a hanging hook pocket; (3.2) enabling the crane to drive the two steel wire ropes to hoist simultaneously, after the auxiliary hook pulley frame is lifted away from the tire frame for a distance h, standing for a period of time t under static load, and then observing the stress condition of the auxiliary hook pulley frame; (3.3) after no abnormality is observed, moving the auxiliary hook pulley frame to the front of the other side of the main hook pulley frame, driving one steel wire rope to slowly rise and driving the other steel wire rope to slowly fall, so that one end of the auxiliary hook pulley frame, which is in butt joint with the main hook pulley frame, is at the same height, and the other end of the auxiliary hook pulley frame, which is far away from the end, which is in butt joint with the main hook pulley frame, is in an inclined upward state; and (3.4) driving the two steel wires simultaneously to enable the auxiliary hook pulley frame to horizontally move to be in butt joint with the other side of the main hook pulley frame, and enabling the auxiliary hook pulley frame to be primarily fixed with the other side of the main hook pulley frame through spot welding.
5. The method of docking a boom according to claim 1, wherein the support columns comprise a first support column and a second support column, the second support column is arranged on a side, which is close to the docking of the main hook pulley frame with the front section of the boom, the first support column is arranged on a side, which is far away from the docking of the main hook pulley frame with the front section of the boom, and the height of the second support column is larger than that of the first support column.

Description

Butt joint method for suspension arms Technical Field The invention relates to the technical field of crane booms, in particular to a boom butt joint method. Background Along with the development of the social industry, in the moving process of large and heavy goods, a crane arm is often required to be used for lifting the large goods and then moving to a designated destination, in the production process of a crane arm, the crane arm is required to be spliced and assembled in sections due to the large size and large mass of the crane arm, in the prior art, the crane arm is just put on a support column 4', namely a front section 1' of the crane arm is arranged on the support column 4', a subsidiary hook pulley frame 3' is just put on the support column 4 'and then spliced on two sides of a main hook pulley frame 2', but because an angle formed between the front section 1 'of the crane arm and the subsidiary hook pulley frame 3' is large, the height of the support column 4 'is required to be increased, the subsidiary hook pulley frame 3' is not contacted with the ground, thus high-altitude operation is required, the safety in the operation process is reduced, meanwhile, the efficient operation of the support column is inconvenient, and the manufacturing cost of the support column is increased. Disclosure of Invention The invention aims to provide a boom butt joint method, which can avoid working on a boom in high air and effectively improve the safety and the high efficiency in the boom butt joint process. In order to achieve the above purpose, the boom butt joint method comprises a boom, wherein the boom comprises a boom front section, a main hook pulley frame and an auxiliary hook pulley frame; the method also comprises the following steps: (1) Firstly, driving a steel wire rope to hoist the front section of the suspension arm to support columns with different heights through a crane; (2) Then the main hook pulley frame is turned over through a crane driving steel wire rope, so that the main hook pulley frame is turned over from a horizontal placement state to a vertical placement state, then the main hook pulley frame is moved to the front of the front section of the suspension arm, the axial height of the main hook pulley frame is consistent with that of the front section of the suspension arm, and then one side of the main hook pulley frame is in butt joint with the front section of the suspension arm; (3) The auxiliary hook pulley frame is hoisted to the other side of the main hook pulley frame through a crane driving steel wire rope, one end of the auxiliary hook pulley frame, which is in butt joint with the main hook pulley frame, is at the same height, one end of the auxiliary hook pulley frame, which is far away from the butt joint with the main hook pulley frame, is in an inclined upward state, and then the auxiliary hook pulley frame is in butt joint with the other side of the main hook pulley frame; (4) And welding gaps on two sides of the main hook pulley frame respectively, so that the front section of the suspension arm, the main hook pulley frame and the auxiliary hook pulley frame are connected into a whole. The main hook pulley frame is turned over from a horizontal placement state to a vertical placement state by arranging the steel wire rope, then the axle center height of the main hook pulley frame is adjusted, so that the main hook pulley frame and the boom front section are positioned at the same degree, one side of the main hook pulley frame is abutted with the boom front section, the auxiliary hook pulley frame is hung on the other side of the main hook pulley frame, and meanwhile, the auxiliary hook pulley frame and the main hook pulley frame are positioned at the same height, so that the auxiliary hook pulley frame and the main hook pulley frame can be abutted, and one end, far away from the main hook pulley frame, of the auxiliary hook pulley frame which is abutted with the main hook pulley frame is obliquely upwards arranged after the auxiliary hook pulley frame is abutted, and whether the auxiliary hook pulley frame and the boom front section form an obtuse angle with the ground is required to be abutted or not is prevented from being influenced in the abutting process. Further, the step (1) further comprises the following steps: Firstly, hanging one shackle at one end of the front section of the suspension arm, hanging the other shackle at the other end of the front section of the suspension arm, and then enabling two steel wire ropes to be respectively hung on the two shackles through a hanging hook pocket; (1.2) enabling the crane to drive two steel wire ropes to hoist simultaneously, after a front section of the suspension arm is lifted away from the jig frame for a distance h, standing for a period of time t under static load, and then observing the stress condition of the front section of the suspension arm; And (1.3) driving the two steel wire ropes to lift simultaneously