Welding tool for transmission shaft of solid cabinet

Abstract

The utility model belongs to the field of welding tools, and provides a solid cabinet transmission shaft welding tool which comprises a bottom plate, and the two sides of one end of the top of the bottom plate are each provided with an end positioning plate used for positioning the end of a transmission shaft. A first rocker arm limiting plate and a second rocker arm limiting plate which are used for isolating a transmission shaft are arranged on one sides of the two sets of end positioning plates respectively, a plurality of sets of shaft body positioning plates are evenly distributed on the bottom plate, square pipes are arranged among the multiple sets of shaft body positioning plates, and pressing clamp assemblies used for pressing the transmission shaft are arranged at the top ends of the square pipes. The position precision of the transmission shaft in the tool is ensured through the shaft body positioning plate and the end part positioning plate, the accuracy of a welding joint is ensured, the erected transmission shaft is pressed through the pressing clamp assembly to realize rapid clamping and positioning of the transmission shaft, and automatic welding equipment is matched, so that the welding time can be greatly shortened, the production efficiency is improved, and the production cost is reduced. And the labor intensity of fixing and overturning the transmission shaft by workers is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of welding fixtures, specifically a welding fixture for a solid cabinet drive shaft. Background Technology

[0002] The solid-state switchgear drive shaft is a key mechanical component in solid-insulated switchgear, responsible for transmitting operating force to realize the opening and closing operation of the switchgear. The solid-state switchgear drive shaft bears a large torque and force during operation, and the welding quality requirements are extremely high. Traditional manual welding is easily affected by human factors, such as welding speed, angle, and stability, resulting in inconsistent weld quality and defects such as porosity, slag inclusion, and incomplete penetration. Therefore, welding fixtures are required during the welding process.

[0003] However, traditional drive shaft welding fixtures are prone to radial offset or axial movement during clamping, resulting in large misalignment of the welded joints. Furthermore, the welding heat is directly conducted to the drive shaft body, causing local thermal expansion and deformation, which affects dimensional accuracy and geometric tolerances. In addition, the position of the drive shaft needs to be manually adjusted repeatedly, and each clamping requires manual calibration of multi-dimensional positioning references, which is time-consuming.

[0004] To address this issue, those skilled in the art have proposed a solid cabinet drive shaft welding fixture to solve the problems raised in the background art. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a welding fixture for solid cabinet drive shafts, thereby resolving the weaknesses in positioning accuracy and production efficiency of existing welding fixtures.

[0006] A welding fixture for a solid cabinet drive shaft includes a base plate. Both sides of the top end of the base plate are fitted with end positioning plates for positioning the drive shaft ends. A first rocker arm limiting plate and a second rocker arm limiting plate are respectively provided on one side of each set of end positioning plates to isolate the drive shaft. Multiple sets of shaft positioning plates are evenly distributed on the base plate. Square tubes are positioned between the multiple sets of shaft positioning plates, and clamping assemblies for pressing the drive shaft are provided at the top of the square tubes. A first positioning plate is provided on one side of the top of the base plate away from the end positioning plates. Two sets of first positioning plates are stacked. A second positioning plate is provided on one side of the inner first positioning plate. A first blocking plate and a second blocking plate are respectively provided on opposite sides of the first and second positioning plates. Two sets of paired third positioning plates are provided on one side of the top of the base plate adjacent to the second positioning plate. A third blocking plate is provided on opposite sides of the two third positioning plates in the same set. The third positioning plate, second positioning plate, first positioning plate, third blocking plate, second blocking plate, and first blocking plate all cooperate to isolate the rocker arm used for welding.

[0007] Preferably, the outer sides of the two sets of end positioning plates are provided with reinforcing ribs with a triangular cross-section.

[0008] Preferably, the shaft positioning plates are provided in six sets, and the six sets of shaft positioning plates are arranged in two rows in a trapezoidal layout on the base plate.

[0009] Preferably, both the shaft positioning plate and the end positioning plate are provided with V-shaped grooves.

[0010] Preferably, the clamp assembly includes a connecting frame, a connecting arm, a slider, a nut pair, a screw, and a pressure plate. The connecting frame is provided at the top of the square tube, the connecting arm is provided on one side of the connecting frame, the slider is slidably connected to the connecting arm, the nut pair is connected to the top of the slider, the screw is threaded through the middle of the nut pair, and the pressure plate is connected to the bottom of the screw.

[0011] Preferably, the square tube and the clamping assembly are provided in three sets, and the three sets of clamping assemblies are fixed in different positions.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model can accurately fix the drive shaft by using the shaft positioning plate, end positioning plate and clamping assembly, ensuring the quality of the welded joint, reducing welding defects, and making the welding quality stable and reliable. Moreover, the three clamping assemblies adopt different fixing positions, which can quickly adapt to drive shafts of different sizes or shapes, reduce adjustment time, improve tooling versatility, and at the same time reduce the technical requirements and work difficulty of operators.

[0014] 2. This utility model forms a modular isolation structure by using a third positioning plate, a second positioning plate, a first positioning plate, a third blocking plate, a second blocking plate, and a first blocking plate to effectively isolate the heat-affected zone during welding, reduce the deformation of the transmission shaft caused by heat conduction, and ensure dimensional accuracy after welding. At the same time, the first rocker arm limiting plate and the second rocker arm limiting plate constrain the rotation or translation range of the transmission shaft, avoiding unexpected displacement caused by thermal stress during welding. Attached Figure Description

[0015] Figure 1 This is the main view of the present invention.

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a side view of the present invention.

[0018] In the picture:

[0019] 1. Base plate; 2. End positioning plate; 3. First rocker arm limiting plate; 4. Second rocker arm limiting plate; 5. Shaft positioning plate; 6. Square tube; 7. Clamping assembly; 701. Connecting frame; 702. Connecting arm; 703. Slider; 704. Nut pair; 705. Screw; 706. Pressure plate; 8. First positioning plate; 9. Second positioning plate; 10. First blocking plate; 11. Second blocking plate; 12. Third positioning plate; 13. Third blocking plate; 14. Reinforcing rib. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] As attached Figure 1 To be continued Figure 3 As shown:

[0022] This utility model provides a welding fixture for a solid cabinet drive shaft, including a base plate 1. Both sides of the top end of the base plate 1 are equipped with end positioning plates 2 for positioning the end of the drive shaft. A first rocker arm limiting plate 3 and a second rocker arm limiting plate 4 for isolating the drive shaft are respectively provided on one side of each set of end positioning plates 2. Multiple sets of shaft positioning plates 5 are evenly distributed on the base plate 1. A square tube 6 is provided between the multiple sets of shaft positioning plates 5. A clamping clamp assembly 7 for pressing the drive shaft is provided at the top of the square tube 6. A first positioning plate 8 is provided on one side of the top of the base plate 1 opposite to the end positioning plates 2. Two sets of overlapping positioning plates 8 are arranged. A second positioning plate 9 is arranged on one side of the first positioning plate 8 located on the inner side. A first blocking plate 10 and a second blocking plate 11 are respectively arranged on the opposite side of the first positioning plate 8 and the second positioning plate 9. Two sets of paired third positioning plates 12 are arranged on the top of the bottom plate 1 adjacent to the second positioning plate 9. A third blocking plate 13 is arranged on the opposite side of the two third positioning plates 12 in the same group. The third positioning plates 12, the second positioning plates 9, the first positioning plates 8, the third blocking plates 13, the second blocking plates 11 and the first blocking plates 10 are all used to isolate the rocker arm of the welding.

[0023] The base plate 1 is made of thick steel plate, which provides stable support for the entire tooling and ensures that there will be no shaking or displacement during the welding process.

[0024] refer to Figure 2 The outer sides of the two sets of end positioning plates 2 are provided with reinforcing ribs 14 with a triangular cross-section.

[0025] Among them, the triangular reinforcing ribs 14 on the outer side of the end positioning plate 2 significantly enhance the structural strength of key stress points and extend the service life of the tooling.

[0026] refer to Figure 1The shaft positioning plate 5 is provided in six sets, and the six sets of shaft positioning plates 5 are arranged in two rows in a trapezoidal layout on the base plate 1.

[0027] Among them, the shaft positioning plate 5 with an isosceles trapezoidal layout can be used to mount and fix drive shafts of different lengths.

[0028] refer to Figure 3 V-shaped grooves are provided on both the shaft positioning plate 5 and the end positioning plate 2.

[0029] Among them, the V-groove is used to adapt to drive shafts of different diameters, which enhances clamping stability and prevents slippage.

[0030] refer to Figure 3 The clamp assembly 7 includes a connecting frame 701, a connecting arm 702, a slider 703, a nut pair 704, a screw 705, and a pressure plate 706. The connecting frame 701 is provided at the top of the square tube 6, and the connecting arm 702 is provided on one side of the connecting frame 701. The slider 703 is slidably connected to the connecting arm 702. The nut pair 704 is connected to the top of the slider 703. The screw 705 is threaded through the middle of the nut pair 704. The pressure plate 706 is connected to the bottom of the screw 705.

[0031] In this process, the screw 705 is driven to rotate, and during the rotation, the screw 705 cooperates with the nut pair 704 to rotate downward, which causes the pressure plate 706 to rotate downward synchronously until the pressure plate 706 presses and fixes the transmission shaft mounted on the shaft positioning plate 5.

[0032] refer to Figure 2 The square tube 6 and the clamping assembly 7 are each provided with three sets, and the three sets of clamping assemblies 7 are fixed in different positions.

[0033] Among them, the three sets of clamping assemblies 7 can clamp the outermost drive shaft at a single point and clamp the drive shaft in the middle of the base plate 1 at two points.

[0034] Working principle: During use, the drive shaft to be welded is mounted between multiple shaft positioning plates 5, with one end of the drive shaft flush with the side of the end positioning plate 2. The shaft positioning plates 5 and the end positioning plates 2 ensure the positional accuracy of the drive shaft in the tooling, guaranteeing the accuracy of the weld joint. Then, the clamping assembly 7 clamps and fixes the drive shaft mounted on the shaft positioning plate 5, which can stably place the drive shaft and prevent it from rotating during the welding process. This allows for quick clamping and positioning of the drive shaft. When used with automated welding equipment, it can greatly shorten the welding time and improve production efficiency. The first rocker arm limiting plate 3 and the second rocker arm limiting plate 4 constrain the rotation or translation range of the drive shaft. The third positioning plate 12, the second positioning plate 9, the first positioning plate 8, the third blocking plate 13, the second blocking plate 11, and the first blocking plate 10 work together to form a modular isolation structure, effectively isolating the welding heat-affected zone and reducing the deformation of the drive shaft caused by heat conduction.

[0035] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a solid cabinet drive shaft, characterized in that, The base plate (1) is equipped with end positioning plates (2) for positioning the end of the drive shaft on both sides of the top end of the base plate (1). The first rocker arm limiting plate (3) and the second rocker arm limiting plate (4) for isolating the drive shaft are respectively provided on one side of the two sets of end positioning plates (2). Multiple sets of shaft positioning plates (5) are evenly distributed on the base plate (1). A square tube (6) is provided between the multiple sets of shaft positioning plates (5). A clamping assembly (7) for pressing the drive shaft is provided at the top of the square tube (6). A first positioning plate (8) is provided at the end of the top side of the base plate (1) away from the end positioning plates (2). Two sets of first positioning plates (8) are stacked. A second positioning plate (9) is provided on one side of the first positioning plate (8) located on the inner side. A first blocking plate (10) and a second blocking plate (11) are provided on the opposite side of the first positioning plate (8) and the second positioning plate (9). Two sets of paired third positioning plates (12) are provided on the side of the top of the bottom plate (1) adjacent to the second positioning plate (9). A third blocking plate (13) is provided on the opposite side of the two third positioning plates (12) in the same group. The third positioning plate (12), the second positioning plate (9), the first positioning plate (8), the third blocking plate (13), the second blocking plate (11) and the first blocking plate (10) are all used to isolate the rocker arm of the welding.

2. The welding fixture for a solid cabinet drive shaft as described in claim 1, characterized in that: The outer sides of the two sets of end positioning plates (2) are provided with reinforcing ribs (14) with a triangular cross section.

3. The welding fixture for a solid cabinet drive shaft as described in claim 1, characterized in that: There are six sets of shaft positioning plates (5), which are arranged in two rows in a trapezoidal layout on the base plate (1).

4. The welding fixture for a solid cabinet drive shaft as described in claim 1, characterized in that: V-grooves are provided on both the shaft positioning plate (5) and the end positioning plate (2).

5. The welding fixture for a solid cabinet drive shaft as described in claim 1, characterized in that: The clamp assembly (7) includes a connecting frame (701), a connecting arm (702), a slider (703), a nut pair (704), a screw (705), and a pressure plate (706). The square tube (6) is provided with a connecting frame (701) at the top. A connecting arm (702) is provided on one side of the connecting frame (701). A slider (703) is slidably connected to the connecting arm (702). A nut pair (704) is connected to the top of the slider (703). A screw (705) is threaded through the middle of the nut pair (704). A pressure plate (706) is connected to the bottom of the screw (705).

6. The welding fixture for a solid cabinet drive shaft as described in claim 1, characterized in that: The square tube (6) and the clamping assembly (7) are each provided with three sets, and the three sets of clamping assemblies (7) are fixed in different positions.

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