Crane body trolley welding tool and method

Abstract

The present invention relates to a crane body trolley welding fixture, comprising a track fixing platform, a support, a rotating shaft, and a first flange. The support is positioned below the track fixing platform to support the platform, and a bracket is further positioned below the track fixing platform. The rotating shaft is mounted on the first flange and connected to the support, and the first flange is mounted on the welding platform. Advantages of the present invention include a rational fixture structure, easy installation, and vertical and horizontal adjustment. This solves the problem of lengthy crane body trolley welding auxiliary time and improves production efficiency.

Description

Technical Field

[0001] The present invention relates to a trolley welding tool and a welding method, in particular to a crane body trolley welding tool and a welding method, belonging to the technical field of engineering machinery. Background Art

[0002] A crane, also known as a hoist, is a multi-action lifting machine capable of vertically lifting and horizontally transporting heavy objects within a certain range. As marine energy gradually becomes a dominant global energy source, the development of offshore platforms has become increasingly important. Offshore platform cranes, essential for loading and unloading cargo and transporting personnel on offshore platforms, demand high standards for safety and reliability.

[0003] At present, in order to prevent offshore platform cranes from shaking due to the influence of factors such as the marine environment and the movement of ships during operation, the cranes are usually welded and fixed to the ship or platform. In the prior art, the main body of the crane is generally welded by first manually welding the bottom and middle layers of the weld, and then using submerged arc welding to weld the cover layer of the weld. The two welding methods for one weld require the cooperation of a welding trolley. However, when using a trolley for welding, since the crane body workpiece is long, generally 6 meters, it is very time-consuming to adjust the welding gun to be parallel and equidistant to the workpiece, resulting in too much time for the crane body to be welded with the trolley. Summary of the Invention

[0004] The purpose of the present invention is to address the defects of the existing technology and propose a crane body trolley welding tool and method that can greatly improve production efficiency.

[0005] In order to achieve the above objectives, the present invention provides a crane body trolley welding tooling, including a track fixing platform, a support, a rotating shaft and a first flange. The support is arranged below the track fixing platform to support the track fixing platform. A bracket is also provided below the track fixing platform. The rotating shaft is installed on the first flange and connected to the support. The first flange is installed on the welding platform.

[0006] The present invention further adopts the following technical solution:

[0007] Preferably, the support is composed of an upper bracket, a middle square plate and a lower bracket, the upper bracket is arranged on the upper surface of the middle square plate, and the lower bracket is arranged on the lower surface of the middle square plate.

[0008] Preferably, the cross section of the track fixing platform is an inverted triangle, and the track fixing platform is welded and fixed to the upper bracket.

[0009] Preferably, the rotating shaft consists of a transverse shaft and a longitudinal shaft, the transverse shaft is rotatably connected in the lower bracket, and the longitudinal shaft is rotatably connected to the first flange.

[0010] Preferably, the transverse shaft is fixed to the longitudinal shaft by welding through a three-way sleeve.

[0011] Preferably, a rotatable first bearing is provided in the inner hole of the flange of the first flange, the lower end step of the longitudinal axis is installed in the inner hole of the first bearing and can rotate left and right with the first bearing, the upper surface of the first flange has a first threaded hole, and a first clamping bearing cover plate is installed in the first threaded hole, and the lower surface of the first flange is fixed on the welding platform.

[0012] Preferably, the lower bracket includes two symmetrically arranged bracket side plates, the bracket side plates have an arc-shaped groove, a second flange is installed in the arc-shaped groove, a rotatable second bearing is provided in the flange inner hole of the second flange, the end step of the transverse axis is installed in the inner hole of the second bearing and can rotate up and down with the second bearing, the outer side of the second flange has a second threaded hole, and a second clamping bearing cover plate is installed in the threaded hole.

[0013] Preferably, the upper bracket includes symmetrically arranged ribs, the inner side of the ribs has an inclined surface that matches the side surface of the track fixing platform, and the two symmetrical inclined surfaces form a groove for supporting the track fixing platform.

[0014] Preferably, the track fixing platform is formed by splicing three long strips. For a longer platform, it has good rigidity and light weight.

[0015] The present invention also provides a crane body trolley welding method, comprising the following steps:

[0016] S1. Fix the trolley welding fixture on the welding platform, then fix the trolley track on the trolley welding fixture, and then place the trolley on the trolley track and move the trolley along the trolley track;

[0017] S2. Hoist the crane body onto the welding platform and keep a proper distance between the crane body and the trolley welding tooling;

[0018] S3. Adjust the trolley welding fixture up and down, left and right, so that the trolley's welding gun is parallel to and equidistant from the weld seam on the crane body;

[0019] S4. Fine-tune the distance between the welding gun and the workpiece to automatically weld the entire butt weld of the crane body.

[0020] The advantages of the present invention are that the tooling structure is reasonable, the installation is convenient, and it can be adjusted up and down and left and right, which solves the problem that the auxiliary welding time of the crane body using the trolley is too long and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a working schematic diagram of the trolley welding tooling of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the trolley welding tooling of the present invention.

[0024] Figure 3 This is a front view of the trolley welding tooling of the present invention.

[0025] Figure 4 It is a left view of the trolley welding tool of the present invention.

[0026] Figure 5 This is a bottom view of the trolley welding tooling of the present invention.

[0027] Figure 6 This is a top view of the trolley welding tooling of the present invention.

[0028] In the figure: 1. Track fixing platform, 2. Support, 201. Upper bracket, 202. Middle square plate, 203. Lower bracket, 3. Rotation axis, 301. Horizontal axis, 302. Longitudinal axis, 303. Three-way sleeve, 4. First flange, 5. Second flange. DETAILED DESCRIPTION

[0029] Example 1

[0030] A crane body trolley welding tool, its structure is as follows Figures 2 to 6 As shown, the platform comprises a track-mounted platform 1, a support 2, a rotating shaft 3, and a first flange 4. The platform 1 has an inverted triangular cross-section and is constructed from three long planks. This provides excellent rigidity and light weight for a long platform. One end of the platform is secured by a bracket, while the other end is connected to the vertically rotatable support 2. The support 2 is connected to the rotating shaft 3, which can rotate left and right. The rotating shaft 3 is mounted in the first flange 4, which is equipped with a first bearing and can rotate left and right. The first flange 4 is welded to the welding platform.

[0031] The support 2 is located below the track-fixing platform 1 to support it. The rotating shaft 3 is mounted on the first flange 4 and connected to the support 2. The support 2 consists of an upper bracket 201, a middle square plate 202, and a lower bracket 203. The track-fixing platform 1 is welded to the upper bracket 201. The upper bracket 201 is located on the upper surface of the middle square plate 202, and the lower bracket 203 is located on the lower surface of the middle square plate 202. The rotating shaft 3 is rotatably connected to the lower bracket 203. The rotating shaft 3 is T-shaped and consists of a transverse shaft 301 and a longitudinal shaft 302. The transverse shaft 301 is welded to the longitudinal shaft 302 via a tee sleeve 303. The transverse shaft 301 is rotatably connected to the lower bracket 203, while the longitudinal shaft 302 is rotatably connected to the first flange 1.

[0032] The upper bracket 201 includes two sets of brackets, each set of brackets includes two symmetrically arranged ribs. The inner sides of the ribs have inclined surfaces that mate with the side surfaces of the track fixing platform 1. The inclined surfaces on the two symmetrically arranged ribs form a groove for supporting the track fixing platform 1. The lower bracket 203 includes two symmetrically arranged bracket side plates. The bracket side plates have arcuate grooves, in which the second flange 5 is installed. The flange inner hole of the second flange 5 is provided with a rotatable second bearing. The end step of the transverse shaft 301 is installed in the inner hole of the second bearing and can rotate up and down around the second flange 5 with the second bearing. The outer side of the second flange 5 has a second threaded hole, in which the second compression bearing cover plate is installed.

[0033] A rotatable first bearing is provided in the flange inner hole of the first flange 1, the lower end step of the longitudinal axis 302 is installed in the inner hole of the first bearing and can rotate left and right around the first flange 1 with the first bearing, the upper surface of the first flange 1 has a first threaded hole, and a first clamping bearing cover plate is installed in the first threaded hole, and the lower surface of the first flange 1 is directly welded and fixed on the welding platform.

[0034] A crane body trolley welding method, such as Figure 1 As shown, the following steps are included:

[0035] S1. Fix the trolley welding fixture on the welding platform, then fix the trolley track on the upper surface of the track fixing platform of the trolley welding fixture, then place the trolley on the trolley track and move the trolley along the trolley track;

[0036] S2. Hoist the crane body onto the welding platform and keep a suitable distance between the crane body and the trolley welding tooling;

[0037] S3. Adjust the trolley welding fixture up and down and left and right by rotating axis 3 so that the trolley's welding gun is parallel to and equidistant from the weld seam on the crane body.

[0038] S4. Fine-tune the distance between the welding gun and the workpiece (i.e., the crane body) to directly and automatically weld the entire butt weld of the crane body.

[0039] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection required by the present invention.

Claims

1. A crane body trolley welding tool, characterized by: The invention comprises a track fixing platform (1), a support (2), a rotating shaft (3) and a first flange (4), wherein the support (2) is arranged below the track fixing platform (1), the rotating shaft (3) is mounted on the first flange (4) and connected to the support (2), and the first flange (4) is mounted on the welding platform; the support (2) is composed of an upper bracket (201), an intermediate square plate (202) and a lower bracket (203), the upper bracket (201) is arranged on the upper surface of the intermediate square plate (202), and the lower bracket (203) is arranged on the lower surface of the intermediate square plate (202); the upper bracket (201) comprises symmetrically arranged ribs, the inner side of the ribs having an inclined surface that matches the side surface of the track fixing platform (1); the track fixing platform (1) is formed by splicing three long strips, ...); the first flange (4) is mounted on the welding platform; The rotating shaft (3) is composed of a transverse shaft (301) and a longitudinal shaft (302), wherein the transverse shaft (301) is rotatably connected in the lower bracket (203), and the longitudinal shaft (302) is rotatably connected to the first flange (4). The transverse shaft (301) is welded and fixed to the longitudinal shaft (302) through a three-way shaft sleeve (303). The lower bracket (203) includes two symmetrically arranged bracket side plates, wherein the bracket side plates have an arc groove, and a second flange (5) is installed in the arc groove. A rotatable second bearing is provided in the flange inner hole of the second flange (5). The end step of the transverse shaft (301) is installed in the inner hole of the second bearing and can rotate up and down with the second bearing. The outer side of the second flange (5) has a second threaded hole, and a second pressing bearing cover plate is installed in the second threaded hole.

2. The crane body trolley welding tool according to claim 1, characterized in that: The cross section of the track fixing platform (1) is in the shape of an inverted triangle, and the track fixing platform (1) is welded and fixed on the upper bracket (201).

3. The crane body trolley welding tool according to claim 1, characterized in that: A rotatable first bearing is provided in the inner hole of the flange of the first flange (4), the lower end step of the longitudinal shaft (302) is installed in the inner hole of the first bearing and can rotate with the first bearing, the upper surface of the first flange (4) has a first threaded hole, a first pressing bearing cover plate is installed in the first threaded hole, and the lower surface of the first flange (4) is fixed on the welding platform.

4. A welding method for a crane body trolley welding tool as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: S1. Fix the trolley welding fixture on the welding platform, then fix the trolley track on the trolley welding fixture, and then place the trolley on the trolley track and move the trolley along the trolley track; S2. Hoist the crane body onto the welding platform and keep a proper distance between the crane body and the trolley welding tooling; S3. Adjust the trolley welding fixture up and down, left and right, so that the trolley's welding gun is parallel to and equidistant from the weld seam on the crane body; S4. Fine-tune the distance between the welding gun and the workpiece to automatically weld the entire butt weld of the crane body.

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