Compact lightweight traction transformer external structure

Abstract

The utility model relates to the technical field of traction transformers, in particular to a compact lightweight traction transformer external structure. The traction transformer body is mounted at the lower part of the vehicle body in a suspension manner; the transformer oil tank and the cooling unit are arranged side by side in the vehicle width direction; the terminal box is arranged on the outer side of the transformer oil tank; a weight reduction structure is arranged at the bottom of the transformer oil tank, and the effects that the weight of the traction transformer and the space occupied by the transformer in the length direction of a vehicle are greatly reduced on the premise that the structural strength is met are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of traction transformers, and in particular to a compact and lightweight external structure of a traction transformer. Background Art

[0002] In the existing technology, the layout of components such as the cooling unit of the external structure of the traction transformer of the domestic line 25KV catenary running urban vehicles is unreasonable, and the overall design structure of the traction transformer oil tank is too bloated, resulting in the transformer occupying too much space in the vehicle length direction and the weight of the traction transformer is also too heavy. Utility Model Content

[0003] The purpose of this utility model is to provide a compact and lightweight traction transformer external structure to address the defects in the prior art. While meeting the structural strength requirements, it greatly reduces the weight of the traction transformer and the space occupied by the transformer in the vehicle length direction.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a compact and lightweight traction transformer external structure, the traction transformer body is installed in a suspended style on the lower part of the vehicle body; the transformer oil tank and the cooling unit are arranged side by side in the vehicle width direction; the terminal box is arranged on the outside of the transformer oil tank; and a weight-reducing structure is provided at the bottom of the transformer oil tank.

[0005] Furthermore, the cooling unit is fixed between two hangers of the transformer oil tank by bolts.

[0006] Furthermore, the terminal box is connected to the transformer oil tank by bolts.

[0007] Furthermore, the terminal box adopts an all-aluminum structure.

[0008] Furthermore, the cooling unit adopts an all-aluminum structure.

[0009] Furthermore, the main plate material selected for the transformer oil tank is 5mm thick steel plate, in which the heterogeneous structure of the oil tank is more consistent with the body of the device. On the premise of meeting the insulation requirements, less grease is required inside the oil tank, thereby achieving the purpose of weight reduction.

[0010] Furthermore, a weight-reducing arrangement is provided at the bottom of the terminal box.

[0011] The traction transformer body is installed on the lower part of the vehicle body in a suspended style; the transformer oil tank and the cooling unit are arranged side by side in the vehicle width direction; the terminal box is arranged on the outside of the transformer oil tank; and a weight-reducing structure is provided at the bottom of the transformer oil tank. This achieves the effect of greatly reducing the weight of the traction transformer and the space occupied by the transformer in the vehicle length direction while meeting the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of the external structure of a compact and lightweight traction transformer of the present invention;

[0014] Figure 2 This is a schematic diagram from another perspective of the external structure of a compact and lightweight traction transformer of the present invention;

[0015] Figure 3 It is a schematic diagram of the weight-reducing structure of the present utility model;

[0016] Figure 4 It is a schematic diagram of the weight-reducing arrangement of the present utility model;

[0017] Reference numerals:

[0018] Traction transformer body 1, cooling unit 2, transformer oil tank 3, hanger 3-1, weight reduction structure 3-2, terminal box 4, weight reduction arrangement 4-1. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] A compact and lightweight traction transformer external structure, such as Figure 1 、 3 As shown, the traction transformer body 1 is installed on the lower part of the vehicle body in a suspended style; the transformer oil tank 3 and the cooling unit 2 are arranged side by side in the vehicle width direction; the terminal box 4 is arranged on the outside of the transformer oil tank 3; and a weight reduction structure 3-2 is provided at the bottom of the transformer oil tank 3.

[0022] Specifically, the traction transformer body 1 is mounted on the lower part of the vehicle body in a suspended manner; the transformer oil tank 3 and the cooling unit 2 are arranged side by side in the vehicle width direction; the terminal box 4 is located outside the transformer oil tank 3; and a weight-reducing structure 3-2 is provided at the bottom of the transformer oil tank 3. This structure fully utilizes the vehicle body width, allowing the cooling unit 2 to be installed in the vehicle width direction, reducing the space occupied by the transformer in the vehicle length direction. Simultaneously, the positioning of the transformer oil tank 3 and the traction transformer terminal box 4 significantly reduces the weight of the traction transformer while ensuring structural strength. Furthermore, while maintaining performance, the traction transformer's external structure is more compact, occupies less space, and has a lighter overall weight. Furthermore, the weight-reducing structure 3-2 provided at the bottom of the transformer oil tank 3 has been verified by finite element calculations and vibration tests to show that this transformer oil tank 3 has better structural strength than a traditional rectangular parallelepiped design, while also reducing the volume of the internal cavity and providing a better fit with the body, thereby achieving the goal of weight reduction.

[0023] As a preferred embodiment of the above, Figure 1 As shown, the cooling unit 2 is fixed between two hangers 3 - 1 of the transformer oil tank 3 by bolts.

[0024] Specifically, the cooling unit 2 is fixed between the two hangers 3-1 of the transformer oil tank 3 by bolts, so that the overall structure of the device is more compact, occupies less space, and has a lighter overall weight. The cooling unit 2 can be used as a reinforcing rib to play a reinforcing role.

[0025] As a preferred embodiment of the above, Figure 1 As shown, the terminal box 4 is connected to the transformer oil tank 3 by bolts.

[0026] Specifically, the terminal box 4 is connected to the transformer oil tank 3 by bolts, so that the external structure of the traction transformer is more compact, occupies less space, and has a lighter overall weight while being used for special position distribution while maintaining unchanged performance. At the same time, it can be directly and conveniently installed and disassembled.

[0027] As a preferred embodiment of the above, Figure 1 As shown, the terminal box 4 adopts an all-aluminum structure.

[0028] Specifically, by adopting an all-aluminum structure and positioning the terminal box 4 , and verifying through finite element calculation and vibration tests, the terminal box 4 not only has sufficient mechanical structural strength, but also can achieve a 50% weight reduction compared to traditional structures.

[0029] As a preferred embodiment of the above, Figure 1As shown, the cooling unit 2 adopts an all-aluminum structure.

[0030] As a preferred embodiment of the above, Figure 1 As shown, the main plate material selected for the transformer oil tank 3 is a 5 mm thick steel plate.

[0031] Specifically, the main plate selected for the transformer oil tank 3 is a 5 mm thick steel plate, and Q345E steel plate can be further selected to ensure better effect. The heterogeneous structure of the oil tank is more consistent with the body of the device. Under the premise of meeting the insulation requirements, less grease is required inside the oil tank, thereby achieving the purpose of weight reduction.

[0032] As a preferred embodiment of the above, Figure 4 As shown, a weight-reducing arrangement 4 - 1 is provided at the bottom of the terminal box 4 .

[0033] Specifically, by providing a weight-reducing arrangement 4 - 1 structure at the bottom of the terminal box 4 , the weight-reducing effect of the terminal box 4 is further improved.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A compact and lightweight traction transformer external structure, characterized in that: The traction transformer body (1) is installed at the lower part of the vehicle body in a suspended manner; The transformer oil tank (3) and the cooling unit (2) are arranged side by side in the vehicle width direction; The terminal box (4) is arranged outside the transformer oil tank (3); A weight reduction structure (3-2) is provided at the bottom of the transformer oil tank (3).

2. The compact and lightweight traction transformer external structure according to claim 1 is characterized in that: The cooling unit (2) is fixed between two suspension seats (3-1) of the transformer oil tank (3) by means of bolts.

3. The compact and lightweight traction transformer external structure according to claim 1 is characterized in that: The terminal box (4) is connected to the transformer oil tank (3) via bolts.

4. The compact and lightweight traction transformer external structure according to claim 3 is characterized in that: The terminal box (4) adopts an all-aluminum structure.

5. The compact and lightweight traction transformer external structure according to claim 2, characterized in that: The cooling unit (2) adopts an all-aluminum structure.

6. The compact and lightweight traction transformer external structure according to claim 1, characterized in that: The plate material selected for the transformer oil tank (3) is a 5 mm thick steel plate.

7. The compact and lightweight traction transformer external structure according to claim 1, characterized in that: A weight-reducing arrangement (4-1) is provided at the bottom of the terminal box (4).

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