Improved 35kv base weld structure

Abstract

The utility model discloses an improved 35kV base welding structure adopts the combination form of base weldment, bottom plate, side plate, and base weldment is configured as the rectangular frame combined with bottom plate and the stand connected with side plate, and the load strength and stress dispersion of horizontal and vertical are taken into account, and the stand is connected with the base, and the connecting point position of side plate is increased while dispersing vertical stress, and the shear resistance of side plate is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of switchgear technology and relates to an improved 35kV base welding structure. Background Technology

[0002] The circuit breakers widely used in current power systems include a wide variety of series such as ZN85, ABB, 3AE, and SF6, and the weight of their matching trolleys varies significantly (ranging from several hundred kilograms to over 1 ton). This weight instability places extremely high demands on the load-bearing capacity of the bottom structure of the switch cabinet, especially posing a severe challenge to the design of the circuit breaker compartment floor plate, which is represented by the KYN61 cabinet type.

[0003] Currently, the industry standard cabinet bottom uses a "well"-shaped base welded frame. The number of connection points between the frame and the cabinet side panels is insufficient, resulting in weak overall structural rigidity. During equipment transportation or lifting, uneven distribution of bottom load-bearing capacity can easily cause "hanging feet" phenomenon (i.e., diagonal twisting and deformation of the cabinet frame) in the diagonal direction of the cabinet. Deformation can lead to problems such as out-of-tolerance flatness of the circuit breaker compartment bottom plate, causing inaccurate installation benchmarks for the handcart track, decreased meshing accuracy of moving and stationary contacts leading to increased contact resistance, abnormal temperature rise, and other operational hazards. Repetitive mechanical stress can also accelerate the cracking of cabinet welds and shorten equipment life. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an improved 35kV base welding structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An improved 35kV base welding structure includes a base weldment, a base plate, and side plates. The base weldment includes a rectangular frame and columns respectively disposed at the four corners of the rectangular frame. The base plate is fixedly connected to the bottom of the rectangular frame. The side plates are disposed on the outer periphery of the rectangular frame and are provided with buckles that engage with the columns.

[0007] Furthermore, the rectangular frame includes four outer beams that are connected in a surrounding manner.

[0008] Furthermore, the cross-section of the outer beam is configured as a U-shaped structure.

[0009] Furthermore, the base weldment also includes a plurality of crossbeams disposed inside the rectangular frame, with the two ends of the crossbeams respectively connected to the outer beams on opposite sides of the rectangular frame, and the plurality of crossbeams being arranged in an alternating manner.

[0010] Furthermore, the crossbeam is provided with a limiting groove for engaging adjacent crossbeams.

[0011] Furthermore, one or both sides of the side plate are provided with buckles for the column to pass through vertically.

[0012] Furthermore, the column is provided with a 90-degree bend.

[0013] Furthermore, the inner side of the side plate is provided with a claw for engaging with the outer beam.

[0014] Furthermore, the outer periphery of the base plate is bent upwards and has a edging for abutting against the outer wall of the rectangular frame.

[0015] In summary, the advantages of this utility model are as follows:

[0016] The base welding structure of this utility model adopts a combination of base weldment, bottom plate and side plate. The base weldment is configured as a rectangular frame combined with the bottom plate and columns connected to the side plate, which takes into account both horizontal and vertical load strength and stress distribution. The side plate is connected to the base by columns, which not only distributes vertical stress, but also increases the connection points of the side plate and greatly improves the shear resistance of the side plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the base weldment of this utility model.

[0018] Figure 2 for Figure 1 The top view in the image.

[0019] Figure 3 for Figure 1 An enlarged diagram of A in the diagram.

[0020] Figure 4 This is a schematic diagram of the base plate.

[0021] Figure 5 This is a schematic diagram of the structure of the base weldment and the base plate.

[0022] Figure 6 This is a schematic diagram of the connection structure of the base weldment, bottom plate, and side plate.

[0023] Figure 7 for Figure 6 A schematic diagram of the structure of B in the middle.

[0024] The markings in the diagram are: 1. Rectangular frame; 11. Horizontal beam; 111. Limiting groove; 12. Column; 121. Slot; 2. Base plate; 21. Edge banding; 22. Fixing hole; 3. Side plate; 31. Buckle plate; 32. Claw. Detailed Implementation

[0025] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0028] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0029] This utility model provides an improved 35kV base welding structure for reinforcing the bottom structure of the switchgear circuit breaker compartment, eliminating problems such as abnormal deformation of the cabinet's hanging feet and base plate.

[0030] Specifically, refer to Figure 6 As shown, the base welding structure includes a base weldment, a bottom plate 2, and side plates 3. The bottom of the side plates 3 is connected to the base weldment, and multiple side plates 3 are distributed around the outer periphery of the base weldment to form the outer wall of the cabinet. The bottom plate 2 is located at the bottom of the base weldment as a bottom protection for the base weldment.

[0031] Reference Figure 1 and Figure 2 The base weldment includes multiple outer beams built on the same horizontal plane. At least four outer beams are connected together to form a rectangular frame 1 structure, which serves as the outer structural support of the base weldment. Multiple crossbeams 11 are set on the inner side of the rectangular frame 1. The two ends of the crossbeams 11 set on the inner side are respectively vertically connected to two opposite outer beams in the rectangular frame 1 to form lateral support. The multiple inner crossbeams 11 form an interlaced structure to provide omnidirectional support structure reinforcement.

[0032] Preferably, the outer beam of the rectangular frame 1 is set as a U-shaped cross-section structure, with the opening of the U-shaped structure facing the inside of the rectangular frame 1. The U-shaped structure greatly improves the resistance to deformation and ensures the structural strength of the base weldment.

[0033] Preferably, the outer beams are fixed to each other, to the outer beams and to the crossbeams 11, and to the crossbeams 11, by welding; or, the outer beams and crossbeams 11 are provided with mounting holes so that the outer beams and crossbeams 11 are fixedly connected by bolts or rivets or other connecting parts.

[0034] Preferably, in this embodiment, the crossbeams 11 within the rectangular frame 1 are provided with multiple limiting grooves 111. The limiting grooves 111 are recessed into the crossbeams 11 to form notches, so that adjacent crossbeams 11 can be engaged in the limiting grooves 111. Two crossbeams 11 arranged in an interlocking manner are engaged and limited by one or two opposing limiting grooves 111. The sidewalls of the limiting grooves 111 provide support and limitation for adjacent crossbeams 11, further improving the structural strength of the base welding.

[0035] Reference Figure 3 The base weldment also includes multiple columns 12. In this embodiment, preferably, four columns 12 are provided and are respectively located at the four corners of the rectangular frame 1. The columns 12 are fixed to the rectangular frame 1 by welding, or by connecting parts such as bolts or rivets. Furthermore, one or more slots 121 for inserting the columns 12 are provided on the outer beam of the rectangular frame 1, so that the columns 12 and the outer beam form a snap-fit, increasing the contact direction between the columns 12 and the rectangular frame 1. The lateral force of the columns 12 can be fully distributed to the outer beam, improving the connection strength between the columns 12 and the rectangular frame 1 and the load of the columns 12.

[0036] Preferably, the column 12 is made of sheet metal and has a 90-degree angle structure, which further strengthens the vertical and horizontal load-bearing capacity of the column 12.

[0037] Reference Figure 4 and Figure 5 The base plate 2 is located at the bottom of the base weldment and covers the bottom rectangular surface of the rectangular frame 1. The base plate 2 is provided with multiple fixing holes 22 for connecting bolts or rivets to the outer beams and crossbeams 11 on the base weldment to form a fixed connection between the base plate 2 and the base weldment.

[0038] The outer periphery of the base plate 2 is bent upwards and has a edging 21. The edging 21 abuts against the outer wall of the rectangular frame 1 on the base weldment, and encloses the outer periphery of the rectangular frame 1. The edging 21 is provided with fixing holes 22 for fixing to the rectangular frame 1 by bolts or rivets, and serves as protection for the bottom and outer periphery of the rectangular frame 1.

[0039] Side plates 3 are disposed on the outer periphery of the base weldment. Preferably, side plates 3 are disposed on four planes on the outer periphery of the base weldment. Side plates 3 are provided with buckle plates 31 that are bent inward on one or both sides in the transverse direction. (Refer to...) Figure 7 When the side plate 3 is connected to the base weldment, the column 12 is inserted vertically into the buckle plate 31, so that the outer periphery of the column 12 and the inner periphery of the buckle plate 31 form an abutment fit, thereby forming a lateral limit between the side plate 3 and the column 12. Bolts or rivets are then inserted through the buckle plate 31 and the column 12 to form a fixed installation between the side plate 3 and the base weldment. The rectangular frame 1 of the base weldment provides vertical load for the side plate 3, and the column 12, which extends vertically for a set length, provides lateral load for the side plate 3, so that the structure of the side plate 3 and the base weldment is stable and strengthened, and it is not easy to deform even during the transfer or lifting of the switchgear.

[0040] Furthermore, a claw 32 is provided on the side plate 3 inside the base weldment. The claw 32 extends downward and engages with the inner side of the outer beam of the rectangular frame 1 to further enhance the lateral load strength.

[0041] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. An improved 35kV base welding structure, characterized in that, It includes a base weldment, a bottom plate (2) and a side plate (3). The base weldment includes a rectangular frame (1) and columns (12) respectively set at the four corners of the rectangular frame (1). The bottom plate (2) is fixedly connected to the bottom of the rectangular frame (1). The side plate (3) is set on the outer periphery of the rectangular frame (1). The side plate (3) is provided with a buckle plate (31) that is snapped onto the column (12).

2. The improved 35kV base welding structure according to claim 1, characterized in that, The rectangular frame (1) includes four outer beams that are connected in a surrounding manner.

3. The improved 35kV base welding structure according to claim 2, characterized in that, The cross-section of the outer beam is designed as a U-shaped structure.

4. The improved 35kV base welding structure according to claim 2, characterized in that, The base weldment also includes a plurality of crossbeams (11) disposed inside the rectangular frame (1), the two ends of the crossbeams (11) being respectively connected to the outer beams on opposite sides of the rectangular frame (1), and the plurality of crossbeams (11) being arranged in an alternating manner.

5. An improved 35kV base welding structure according to claim 4, characterized in that, The crossbeam (11) is provided with a limiting groove (111) for engaging adjacent crossbeams (11).

6. The improved 35kV base welding structure according to claim 2, characterized in that, The side plate (3) is provided with a buckle plate (31) on one or both sides in the lateral direction for the column (12) to pass through vertically.

7. An improved 35kV base welding structure according to claim 6, characterized in that, The column (12) is provided with a 90-degree bend.

8. An improved 35kV base welding structure according to claim 6, characterized in that, The inner side of the side plate (3) is provided with a claw (32) for engaging with the outer beam.

9. An improved 35kV base welding structure according to claim 1, characterized in that, The outer periphery of the base plate (2) is bent upward and provided with a edging (21) for abutting against the outer wall of the rectangular frame (1).

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