Generator rear mount welding apparatus

Abstract

The utility model discloses a generator rear base welding equipment belongs to welding equipment technical field, including the bottom plate, the bottom plate top symmetry fixed connection has two guide rails, the guide rail is slidably provided with first gantry walking mechanism and second gantry walking mechanism, first gantry walking mechanism with second gantry walking mechanism all is provided with welding robot, first gantry walking mechanism with second gantry walking mechanism can respectively drive its top welding robot to carry out three -axis movement, the bottom plate top left -hand side fixed mounting has two axle L type positioner, and this utility model solves the movable radius of existing welding equipment is limited, and for the large -scale generator rear base's wide range space weld, needs multiple dismounting work piece to adjust the welding position, and then leads to the process complicated, production efficiency is low, still easy to produce error accumulation, difficult to cover all the weld problem.

Description

Technical Field

[0001] This utility model belongs to the field of welding equipment technology, and in particular relates to a welding equipment for the rear base of a generator. Background Technology

[0002] The generator rear base is the core load-bearing component of the generator. It is usually a large steel structure with characteristics of large volume (length can reach several meters), heavy weight (single piece weight often exceeds 9000 kg), and numerous and complex welds (including a large number of spatial fillet welds and butt welds). Its welding quality directly determines the operational stability and safety of the generator.

[0003] Currently, welding of the generator rear base is mostly done in two ways: one is purely manual welding, where operators need to use scaffolding or simple lifting platforms to adjust the working position. This is not only labor-intensive and inefficient, but also limited by the precision of manual operation, resulting in poor weld uniformity and defects such as undercut and incomplete penetration. The other is existing semi-automatic welding equipment, which is equipped with simple robotic arms and fixed worktables. However, it still has some problems in actual use. The robotic arms of existing welding equipment are mostly fixed-base type with limited radius of motion, and the worktables are mostly single-axis flipping or fixed structures, which cannot coordinate with the robotic arms. For the large spatial welds of the rear base of large generators, the workpiece needs to be disassembled and reassembled multiple times to adjust the welding position. This not only leads to cumbersome procedures and low production efficiency, but also easily causes the accumulation of errors due to multiple positioning, making it difficult to cover all welds. Especially for welds with poor accessibility such as deep cavities and corners, welding blind spots often occur. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a welding device for the rear base of a generator, which has the advantages of sufficient working radius, simple process, high production efficiency, less prone to error accumulation, and able to cover all weld seams. It solves the problems of the limited working radius of existing welding equipment, and the need to disassemble and assemble the workpiece multiple times to adjust the welding position for the large spatial weld seams of the rear base of a large generator, which leads to cumbersome process, low production efficiency, easy error accumulation, and difficulty in covering all weld seams.

[0005] This utility model is implemented as follows: a welding device for the rear base of a generator includes a base plate. Two guide rails are symmetrically fixedly connected above the base plate. A first gantry walking mechanism and a second gantry walking mechanism are slidably arranged on the guide rails. A welding robot is arranged on both the first gantry walking mechanism and the second gantry walking mechanism. The first gantry walking mechanism and the second gantry walking mechanism can drive the welding robot above them to perform three-axis motion respectively. A two-axis L-shaped positioner is fixedly installed on the left side above the base plate.

[0006] In a preferred embodiment of this utility model, the first gantry walking mechanism includes a first driving mechanism. Two first vertical plates are symmetrically slidably connected above the guide rail. A first crossbeam is fixedly connected between the two first vertical plates. A first sliding plate is slidably connected to the left side of the first crossbeam. A first sliding rod is slidably connected to the left side of the first sliding plate. The welding robot is fixedly installed at the lower end of the first sliding rod. The first driving mechanism can drive the first vertical plate to slide in the X-axis direction, drive the first sliding plate to slide in the Y-axis direction, and drive the first sliding rod to slide in the Z-axis direction.

[0007] As a preferred embodiment of this utility model, the second gantry walking mechanism has the same structural principle as the first gantry walking mechanism. The second gantry walking mechanism can drive the welding robot above it to move in the X-axis, Y-axis and Z-axis directions. The effective stroke of the first gantry walking mechanism and the second gantry walking mechanism in driving the welding robot to move in the Z-axis direction is different.

[0008] As a preferred embodiment of this utility model, stairs are fixedly connected to the front side of the first vertical plate and the front side of the second gantry walking mechanism.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. This utility model utilizes a welding robot, a first gantry walking mechanism, a second gantry walking mechanism, and a two-axis L-shaped positioner to achieve multi-axis welding motion, thereby effectively increasing the equipment's operating radius, giving the equipment a large working range and excellent system flexibility, while avoiding the problems of cumbersome procedures, low production efficiency, error accumulation, and difficulty in covering all weld seams caused by repeatedly disassembling and assembling large workpieces to adjust the welding position, so as to improve the equipment's performance and ease of use.

[0011] 2. This utility model uses the X, Y, and Z axes of the first and second gantry traveling mechanisms, as well as the flipping and rotating axes of the two-axis L-shaped positioner, as external auxiliary axes of the welding robot for servo linkage control. Compared with non-linkage control, it can effectively improve the positioning accuracy and motion stability of the equipment, thereby ensuring high-quality welding of the workpiece. Attached Figure Description

[0012] Figure 1 This is a front view of the welding equipment provided in an embodiment of the present utility model;

[0013] Figure 2 This is an isometric view of the welding equipment provided in this embodiment of the utility model.

[0014] In the diagram: 1. Base plate; 2. Guide rail; 3. First gantry traveling mechanism; 4. Second gantry traveling mechanism; 5. Welding robot; 6. Two-axis L-shaped positioner; 7. First vertical plate; 8. First crossbeam; 9. First sliding plate; 10. First sliding rod; 11. Staircase. Detailed Implementation

[0015] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0016] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] refer to Figure 1 and Figure 2 This utility model provides a generator rear base welding device, including a base plate 1. Two guide rails 2 are symmetrically fixedly connected above the base plate 1. A first gantry walking mechanism 3 and a second gantry walking mechanism 4 are slidably arranged on the guide rails 2. Welding robots 5 are arranged on both the first gantry walking mechanism 3 and the second gantry walking mechanism 4. The first gantry walking mechanism 3 and the second gantry walking mechanism 4 can drive the welding robots 5 above them to perform three-axis motion respectively. A two-axis L-shaped positioner 6 is fixedly installed on the left side above the base plate 1.

[0018] In use, the operator moves the first gantry traveling mechanism 3 and the second gantry traveling mechanism 4 to the loading start position, and then hoists the pre-fixed and assembled workpiece onto the two-axis L-shaped positioner 6 (which uses existing technologies such as servo motors, RV reducers and gear transmission mechanisms to achieve dual-axis drive of the flipping and rotating axes, and positions and fixes the workpiece by the clamping fixture installed above it). After the workpiece is positioned and fixed, the operator manually confirms that the welding program selection is correct and then starts the equipment. The welding robot 5 and the gantry traveling mechanism (which can drive the welding robot 5 to move in the X, Y and Z axes respectively to change the welding position of the welding robot 5) run according to the preset program. Welding begins after the welding gun held at the end of the welding robot 5 reaches the beginning of the weld. After the workpiece is welded, the operator first confirms that the working environment is safe, and then manually releases the clamping fixture to hoist and unload the workpiece.

[0019] When a changeover is required, first replace the corresponding clamping fixture and switch the welding program, and then perform welding in the same manner as described above.

[0020] This setup allows for multi-axis welding motion using the welding robot 5, the first gantry traveling mechanism 3, the second gantry traveling mechanism 4, and the two-axis L-shaped positioner 6. This effectively increases the equipment's operating radius, giving it a large working range and excellent system flexibility. It also avoids the problems of cumbersome procedures, low production efficiency, error accumulation, and difficulty in covering all weld seams caused by repeatedly disassembling and assembling large workpieces to adjust the welding position, thereby improving the equipment's performance and ease of use.

[0021] Furthermore, the first gantry walking mechanism 3 includes a first drive mechanism. Two first vertical plates 7 are symmetrically slidably connected above the guide rail 2. A first crossbeam 8 is fixedly connected between the two first vertical plates 7. A first slide plate 9 is slidably connected to the left side of the first crossbeam 8. A first slide rod 10 is slidably connected to the left side of the first slide plate 9. The welding robot 5 is fixedly installed at the lower end of the first slide rod 10. The first drive mechanism can drive the first vertical plate 7 to slide in the X-axis direction, drive the first slide plate 9 to slide in the Y-axis direction, and drive the first slide rod 10 to slide in the Z-axis direction. The second gantry walking mechanism 4 has the same structural principle as the first gantry walking mechanism 3. The second gantry walking mechanism 4 can drive the welding robot 5 above it to move in the X-axis, Y-axis, and Z-axis directions. The effective stroke of the first gantry walking mechanism 3 and the second gantry walking mechanism 4 in driving the welding robot 5 in the Z-axis direction is different.

[0022] In use, the first drive mechanism (which drives the first vertical plate 7 in the X-axis direction, the first slide plate 9 in the Y-axis direction, and the first slide rod 10 in the Z-axis direction) is driven by the first drive mechanism (which drives the first vertical plate 7 in the X-axis direction, the first slide plate 9 in the Y-axis direction, and the first slide rod 10 in the Z-axis direction, thereby driving the welding robot 5 to perform three-axis motion in order to adjust the welding position. Similarly, the second gantry walking mechanism 4 drives the welding robot 5 above it by the first gantry walking mechanism 3.

[0023] This configuration allows the X, Y, and Z axes of the first gantry traveling mechanism 3 and the second gantry traveling mechanism 4, as well as the flipping and rotating axes of the two-axis L-shaped positioner 6, to be used as external auxiliary axes of the welding robot 5 for servo linkage control. Compared with non-linkage control, this can effectively improve the positioning accuracy and motion stability of the equipment, thereby ensuring high-quality welding of the workpiece.

[0024] It should be noted that the lubricating oil circuit of the first drive mechanism is directly pumped into the transmission pair through a soft oil pipe. The high gear and rack precision and good lubrication enable the gantry traveling mechanism to have a longer service life.

[0025] Furthermore, stairs 11 are fixedly connected to the front side of the first vertical plate 7 and the front side of the second gantry walking mechanism 4.

[0026] When in use, the equipment can be easily climbed to the top via stairs 11 for maintenance.

[0027] The working principle of this utility model:

[0028] In use, the operator moves the first gantry traveling mechanism 3 and the second gantry traveling mechanism 4 to the loading start position, and then hoists the tack-fixed and assembled workpiece onto the two-axis L-shaped positioner 6. After the workpiece is positioned and fixed, the operator manually confirms that the welding program selection is correct and then starts the equipment. The welding robot 5 and the gantry traveling mechanism run according to the pre-set program. Welding begins when the welding gun held at the end of the welding robot 5 reaches the beginning of the weld. After the workpiece is welded, the operator first confirms that the working environment is safe, and then manually releases the clamping fixture to hoist and unload the workpiece. When a change of type is required, the corresponding clamping fixture is first replaced and the welding program is switched, and then the welding can be carried out in the same way as above.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A generator rear base welding device, comprising a base plate (1), characterized in that: Two guide rails (2) are symmetrically fixedly connected above the base plate (1). A first gantry walking mechanism (3) and a second gantry walking mechanism (4) are slidably arranged on the guide rails (2). Welding robots (5) are arranged on both the first gantry walking mechanism (3) and the second gantry walking mechanism (4). The first gantry walking mechanism (3) and the second gantry walking mechanism (4) can drive the welding robots (5) above them to perform three-axis motion respectively. A two-axis L-shaped positioner (6) is fixedly installed on the left side above the base plate (1).

2. The generator rear base welding equipment as described in claim 1, characterized in that: The first gantry walking mechanism (3) includes a first driving mechanism. Two first vertical plates (7) are symmetrically slidably connected above the guide rail (2). A first crossbeam (8) is fixedly connected between the two first vertical plates (7). A first sliding plate (9) is slidably connected to the left side of the first crossbeam (8). A first sliding rod (10) is slidably connected to the left side of the first sliding plate (9). The welding robot (5) is fixedly installed at the lower end of the first sliding rod (10). The first driving mechanism can drive the first vertical plate (7) to slide in the X-axis direction, drive the first sliding plate (9) to slide in the Y-axis direction, and drive the first sliding rod (10) to slide in the Z-axis direction.

3. The generator rear base welding equipment as described in claim 1, characterized in that: The second gantry walking mechanism (4) has the same structural principle as the first gantry walking mechanism (3). The second gantry walking mechanism (4) can drive the welding robot (5) above it to move in the X-axis, Y-axis and Z-axis directions. The effective stroke of the first gantry walking mechanism (3) and the second gantry walking mechanism (4) in driving the welding robot (5) to move in the Z-axis direction is different.

4. The generator rear base welding equipment as described in claim 2, characterized in that: Stairs (11) are fixedly connected to the front side of the first vertical plate (7) and the front side of the second gantry walking mechanism (4).

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