A hybrid locomotive for shunting

Abstract

The application relates to a structure layout of a converter cabinet, in particular to a converter cabinet for a hybrid shunting locomotive, which comprises a frame cabinet body, the front side wall and the rear side wall of the frame cabinet body are regionally separated according to functions; a wind-cooling heat dissipation air duct is arranged in the frame cabinet body, the wind-cooling heat dissipation air duct is provided with mounting positions of different devices, a first maintenance door is arranged on the left side wall of the wind-cooling heat dissipation air duct, a second maintenance door is arranged on the right side wall of the frame cabinet body; detachable door plates are connected to the outer surfaces of each region of the front side wall and the rear side wall of the frame cabinet body, the detachable door plate arranged at the cooling device region is an air inlet mesh plate, the surfaces of the left side wall and the right side wall of the frame cabinet body which are not covered by the maintenance doors are covered with skins. Through the application, the functions of traction conversion, auxiliary conversion, power battery charging and storage battery charging are integrated in the limited space of the locomotive; the structure strength of the converter cabinet, the lightweight design of the cabinet body and the heat dissipation demand of the heat-generating electrical elements of the converter cabinet are satisfied.

Description

Technical Field

[0001] This invention relates to the structural layout of converter cabinets, specifically a converter cabinet for a hybrid power shunting locomotive. Background Technology

[0002] The hybrid shunting locomotive is an energy-saving and environmentally friendly hybrid locomotive, applicable to hybrid power, electric-electric shunting, rescue vehicles, and tunnel engineering vehicles. The traction auxiliary converter cabinet equipped on the locomotive was developed by our company. The locomotive consists of two frames, front and rear, sharing a back-to-back structure traction auxiliary converter cabinet. Each converter cabinet consists of a set of three-phase uncontrolled rectifiers, two sets of traction inverters, two sets of chopper circuits, four sets of three-level bidirectional DC / DC chargers, an auxiliary converter, a composite cooling system, and corresponding control units.

[0003] The converter cabinet for hybrid power supply contains numerous electrical functional modules, which are interconnected both electrically and structurally. A well-planned layout of these modules must not only meet electrical and structural requirements but also satisfy the heat dissipation needs of the electrical components, as well as the size and weight limitations of the converter cabinet. Existing traction auxiliary converter cabinets employ a separate structure, integrating the auxiliary and charger units within the auxiliary converter cabinet. The traction and auxiliary converter cabinets function as two independent units, each fulfilling its own function. Given this separate structure, the cooling systems within each cabinet are also independent. While this separate structure achieves both traction and auxiliary functions, it presents the following problems: 1. The combined size of the traction and auxiliary converter cabinets is too large; 2. The combined weight of the two independent cabinets is too large; 3. High heat dissipation losses in the cooling system; 4. Long design and production cycles for the converter cabinets. Summary of the Invention

[0004] The present invention aims to solve the technical problems of existing traction converter cabinets and auxiliary converter cabinets being independent of each other, resulting in large overall size and heavy weight, requiring two sets of cooling and heat dissipation systems, and causing large heat dissipation losses, and provides a converter cabinet for hybrid power shunting locomotives.

[0005] The technical means adopted by this invention to solve its technical problem is: a converter cabinet for a hybrid shunting locomotive, comprising a rectangular frame cabinet, the front and rear sidewalls of which are mirror images of each other. The left side of the front wall of the frame cabinet, from top to bottom, is arranged as a power battery charger unit area and a low-voltage signal interface area, with the low-voltage signal interface area further divided into a charger interface area. The right side of the front wall of the frame cabinet, from top to bottom, is arranged as a control unit area, a first power module area, a first capacitor area, and a first traction external interface area; the frame cabinet... The left side of the rear wall of the frame cabinet, from top to bottom, is divided into a cooling device area, a second power module area, a second capacitor area, and a water pump / environmental control fan area. The water pump / environmental control fan area is further divided into a second traction external interface area. The right side of the rear wall of the frame cabinet, from top to bottom, is divided into an auxiliary device area and an auxiliary external interface area. The power module area, capacitor area, and first traction external interface area on the front wall of the frame cabinet are connected to the power module area, capacitor area, and second traction external interface area on the rear wall of the frame cabinet, forming a single area. A vertically arranged air-cooled heat dissipation duct is provided between the power battery charger unit area on the wall and the auxiliary device area on the rear wall of the symmetrical frame cabinet. The upper part of the air-cooled heat dissipation duct is connected to the air outlet of the cooling device. The top of the air-cooled heat dissipation duct is sealed and the bottom is connected to the heat dissipation air outlet located at the bottom of the frame cabinet. From top to bottom, the air-cooled heat dissipation duct contains the filter reactor area of ​​the charger and the filter reactor / isolation transformer area of ​​the auxiliary transformer / auxiliary unit. The left side wall of the air-cooled heat dissipation duct is provided with a tool for maintenance of the air-cooled heat dissipation duct. The first maintenance door for the components is located on the first side wall of the frame cabinet, and the second maintenance door for the water pump / environmental control fan is located on the right side wall of the frame cabinet. The control unit area is separated by a closed partition, and the remaining areas of the frame cabinet are separated by mounting beams. A dustproof top cover is also connected to the top of the frame cabinet, and a base frame is also connected to the bottom of the frame cabinet. Removable door panels are connected to the outer surfaces of each area of ​​the front and rear side walls of the frame cabinet. The removable door panel in the cooling device area is an air inlet mesh panel. The surfaces of the left and right side walls of the frame cabinet that are not covered by maintenance doors are covered with skin.

[0006] Preferably, the overall cross-section of the dustproof top cover is an isosceles trapezoid. The dustproof top cover is welded into a shell by skin welding. A support frame is provided on the inner side of the shell. Multiple handrails are also welded on the dustproof top cover. The dustproof top cover and the frame cabinet are detachably connected by multiple fasteners.

[0007] Preferably, the detachable door panel in the first power module area is provided with a left edge pressure plate and a lower edge pressure plate. The left edge pressure plate presses against the outside of the detachable door panel in the power battery charger unit area, and the lower edge pressure plate presses against the outside of the detachable door panel in the first traction external interface area. The detachable door panel in the second power module area is provided with a right edge pressure plate and a lower edge pressure plate. The right edge pressure plate presses against the outside of the detachable door panel in the auxiliary device area, and the lower edge pressure plate presses against the outside of the detachable door panel in the water pump / environmental control fan area.

[0008] Preferably, the base frame includes a frame welded from square steel tubes, with a stainless steel plate welded to the bottom of the frame, and the frame cabinet is detachably and fixedly connected to the vehicle body through the base frame.

[0009] Preferably, the surface of the frame cabinet is coated with an anti-corrosion and anti-rust coating.

[0010] Preferably, the left and right walls of the frame cabinet are respectively provided with sealing strip mounting grooves corresponding to the positions of the first and second inspection doors, and sealing strips that cooperate with the first and second inspection doors are installed in the sealing strip mounting grooves.

[0011] The beneficial effects of this invention are as follows: Compared with two independent traction converter cabinets and auxiliary converter cabinets, the converter cabinet of this invention has a smaller overall size and lighter weight, requires only one cooling device, and has a device mounting position set inside the air-cooled heat dissipation duct, which can dissipate heat from the device during ventilation, resulting in good heat dissipation. This allows the functions of traction converter, auxiliary converter, power battery charging, and storage battery charging to be integrated into one unit within the limited space of the locomotive, meeting the requirements of one-to-one charging, discharging, and traction power supply for four sets of power batteries. While ensuring the structural strength of the converter cabinet and the lightweight design of the cabinet, it also meets the heat dissipation requirements of the heat-generating electrical components of the converter cabinet. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of the frame cabinet described in this invention.

[0014] Figure 2 This is a schematic diagram of the regional layout structure of the front side wall of the frame cabinet described in this invention.

[0015] Figure 3 This is a schematic diagram of the regional layout structure of the rear side wall of the frame cabinet described in this invention.

[0016] Figure 4 This is a schematic diagram of the layout structure of the frame cabinet after the detachable door panel is installed on the front side wall.

[0017] Figure 5 This is a schematic diagram of the layout structure of the frame cabinet after the detachable door panel is installed on the rear side wall.

[0018] Figure 6 This is a schematic diagram of the internal frame structure of the air-cooled heat dissipation duct in this invention.

[0019] Figure 7 This is a schematic diagram of the internal layout structure of the air-cooled heat dissipation duct in this invention.

[0020] Figure 8 for Figure 6 This is a structural diagram after the first inspection door has been installed.

[0021] Figure 9 for Figure 7 This is a structural diagram after the second inspection door has been installed.

[0022] Figure 10 This is a schematic diagram of the overall structure of the dustproof top cover in this invention.

[0023] Figure 11 This is a schematic diagram of the detachable door panel structure in the first power module area of ​​the present invention.

[0024] Figure 12 This is a schematic diagram of the overall structure of the converter cabinet for a hybrid shunting locomotive according to the present invention.

[0025] In the diagram: 1. Frame cabinet; 2. Power battery charger unit area; 3. Low-voltage signal interface area; 4. Charger interface area; 5. Control unit area; 6. First power module area; 7. First capacitor area; 8. First traction external interface area; 9. Cooling device area; 10. Second power module area; 11. Second capacitor area; 12. Water pump / environmental control fan area; 13. Second traction external interface area; 14. Auxiliary device area; 15. Auxiliary external interface area; 16. Air-cooled heat dissipation duct; 17. Heat dissipation outlet; 18. Filter 19. Filter reactor / isolation transformer area for auxiliary transformer / auxiliary unit; 20. First inspection door; 21. Second inspection door; 22. Mounting beam; 23. Dustproof top cover; 24. Base frame; 25. Removable door panel; 26. Air inlet mesh panel; 27. Skin; 28. Shell; 29. ​​Support frame; 30. Handrail; 31. Fasteners; 32. Left edge pressure plate; 33. Lower edge pressure plate; 34. Right edge pressure plate; 35. Anti-slip pad; 36. Sealing strip mounting groove; 37. Top frame; 38. Channel steel; 39. Square steel tube; 40. Bottom frame. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] A specific embodiment of the present invention provides a converter cabinet for a hybrid shunting locomotive, specifically as follows: Figures 1-12As shown, the device includes a rectangular frame cabinet 1. The front and rear sidewalls of the frame cabinet 1 are mirror images of each other. From top to bottom, the left side of the front sidewall of the frame cabinet 1 is divided into a power battery charger unit area 2 and a low-voltage signal interface area 3. The low-voltage signal interface area 3 is further divided into a charger interface area 4. From top to bottom, the right side of the front sidewall of the frame cabinet 1 is divided into a control unit area 5, a first power module area 6, a first capacitor area 7, and a first traction external interface area 8. From top to bottom, the left side of the rear sidewall of the frame cabinet 1 is divided into a cooling device area 9, a second power module area 10, and a second capacitor area. Domain 11 and water pump / environmental control fan area 12, the water pump / environmental control fan area 12 is further divided into a second traction external interface area 13, the right side of the rear wall of the frame cabinet 1 is provided with an auxiliary device area 14 and an auxiliary external interface area 15 from top to bottom; the power module area, capacitor area and first traction external interface area 8 of the front wall of the frame cabinet 1 are respectively connected to the power module area, capacitor area and second traction external interface area 13 of the rear wall of the frame cabinet 1 to form a single area; the power battery charger unit area 2 of the front wall of the frame cabinet 1 and the auxiliary device area 14 of the rear wall of the frame cabinet 1 are symmetrically located. A vertically arranged air-cooled heat dissipation duct 16 is also provided between them. The upper part of the air-cooled heat dissipation duct 16 is connected to the air outlet of the cooling device. In specific operation, the air outlet of the cooling device is connected to the front side of the upper part of the air-cooled heat dissipation duct 16. The top of the air-cooled heat dissipation duct 16 is sealed and the bottom end is connected to the heat dissipation air outlet 17 located at the bottom of the frame cabinet 1. From top to bottom, the air-cooled heat dissipation duct 16 is provided with the filter reactor area 18 of the charger and the filter reactor / isolation transformer area 19 of the auxiliary transformer / auxiliary unit. The left side wall of the air-cooled heat dissipation duct 16 is provided with a first... A second maintenance door 21 for inspecting and maintaining the water pump / environmental control fan is provided on the right side wall of the frame cabinet 1, with an inspection door 20. The control unit area 5 is divided by a closed partition, and the remaining areas of the frame cabinet 1 are separated by mounting beams 22. A dustproof top cover 23 is also connected to the top of the frame cabinet 1, and a base frame 24 is also connected to the bottom of the frame cabinet 1. Removable door panels 25 are connected to the outer surfaces of each area of ​​the front and rear side walls of the frame cabinet 1. The removable door panel 25 provided in the cooling device area 9 is an air inlet mesh panel 26. The surfaces of the left and right side walls of the frame cabinet 1 that are not covered by the maintenance door are covered with a skin 27.

[0030] The frame cabinet 1 adopts a welded frame structure. Since the minimum operating temperature of the converter cabinet is -40℃, Q345E is selected as the main material of the frame. To improve the structural load-bearing capacity, square steel pipes are used for the load-bearing beams of large-mass components (such as fans and reactors). The frame cabinet 1 includes a frame structure composed of a bottom frame 40, a top frame 37, and channel steel 38 and square steel pipes 39 vertically fixed between the bottom frame 40 and the top frame.

[0031] Within the frame cabinet 1, partitions separate the area serving as the air-cooled heat dissipation duct 16 from the rest of the cabinet. The area enclosed by the partitions constitutes the air-cooled heat dissipation duct 16. The joints of the partitions are sealed by welding. Specifically, sealant is applied to the weld seams of the air-cooled heat dissipation duct 16, and sealing strips are pressed onto the contact surfaces between the internal components and the duct to ensure that the converter cabinet meets the requirements for impact and vibration, duct sealing performance, and cabinet lightweighting. The inside of the air-cooled heat dissipation duct 16 can be accessed through the first inspection door 20. When the device is under maintenance, after closing the first maintenance door 20, the air-cooled heat dissipation duct 16 returns to its tubular structure, allowing for normal ventilation. The first maintenance door 20 also serves as the maintenance door on the left side wall of the frame cabinet 1. Air enters the air-cooled heat dissipation duct 16 from the air outlet of the cooling device, flows downwards along the duct, and exits from the bottom heat dissipation outlet 17. Because the device inside the air-cooled heat dissipation duct 16 is supported by the mounting beams 22, it does not obstruct airflow. The mounting beams 22 inside the air-cooled heat dissipation duct 16 are detachable. The remaining areas are separated by the mounting beams 22, which are welded to the frame cabinet 1 at other locations. This satisfies the load-bearing requirements while reducing the overall weight of the device. The power module area, capacitor area, and first traction external interface area 8 on the front side wall of the frame cabinet 1 are connected to the power module area, capacitor area, and second traction external interface area 13 on the rear side wall of the frame cabinet 1, forming a single area. These three large areas are used to house power modules and capacitor modules, or to arrange traction external interfaces. The water pump / environmental control fan can be inspected and maintained through the second access door 21, as can the piping inside the cabinet. Specifically, there are two access doors 21, each used for inspecting different locations. The first access door 20 is located on the left side wall of the frame cabinet 1, and the second access door 21 is located on the right side wall of the frame cabinet 1. The detachable door panel 25 is detachably connected to the frame cabinet 1 via a lock or bolts.

[0032] The front and rear walls of the frame cabinet 1 are arranged in a mirror image, and the specific size of each area is determined by the volume of the devices to be installed. The control device area needs to be set up as a dust-free area, so it is enclosed by a closed partition. The cooling device area 9 is equipped with an air inlet grille 26. Cooler external air is drawn into the cooling device through the air inlet grille 26 by a fan and then exhausted through the air-cooled heat dissipation duct 16.

[0033] During installation, the converter cabinet is mounted on the upper part of the vehicle body, located between the low-voltage compartment and the power battery. Corridors are located on both sides of the converter cabinet. The converter cabinet is not covered by the vehicle body; its exterior is part of the vehicle's exterior. The outer contour of the converter cabinet remains consistent with the overall vehicle design, and the dust cover 23 can be removed independently. Limit switches are installed on the door panels adjacent to the converter cabinet and the corridor, and high-voltage warning labels are affixed.

[0034] Furthermore, as a specific embodiment of the present invention, the overall cross-section of the dustproof top cover 23 is an isosceles trapezoid. The dustproof top cover 23 is welded into a shell 28 by a skin 27. A support frame 29 is provided on the inner side of the shell 28. Multiple handrails 30 are also welded on the dustproof top cover 23. The dustproof top cover 23 and the frame cabinet 1 are detachably connected by multiple fasteners 31.

[0035] The fasteners 31 can be snap-fit ​​structures or bolt and nut assemblies, and are arranged along the front and rear edges of the dust cover 23. The dust cover 23 is also provided with multiple lifting lugs. An anti-slip pad 35 is also provided on the top of the dust cover 23.

[0036] Furthermore, as a specific embodiment of the present invention, the detachable door panel 25 in the first power module region 6 is provided with a left edge pressure plate 32 and a lower edge pressure plate 33. The left edge pressure plate 32 presses against the outside of the detachable door panel 25 in the power battery charger unit region 2, and the lower edge pressure plate 33 presses against the outside of the detachable door panel 25 in the first traction external interface region 8. The detachable door panel 25 in the second power module region 10 is provided with a right edge pressure plate 34 and a lower edge pressure plate 33. The right edge pressure plate 34 presses against the outside of the detachable door panel 25 in the auxiliary device region 14, and the lower edge pressure plate 33 presses against the outside of the detachable door panel 25 in the water pump / environmental control fan region 12.

[0037] Among them, the left edge pressure plate 32 refers to the pressure plate located at the left edge, and similarly, the lower edge pressure plate 33 is the pressure plate located at the lower edge.

[0038] The detachable door panel 25 employs an interlocking structure to achieve high-voltage interlocking, ensuring that all electrical components inside the cabinet are not energized after the cabinet door is opened, thus protecting personal safety. The opening sequence of the detachable panels on the front wall of the frame cabinet 1 is based on the maintenance and operation requirements of the electrical components. Because the control unit needs to read data, the detachable door panel 25 facing the control unit is designed to be opened independently. Only after the detachable door panel 25 in the first power module area 6 is opened can the detachable door panels 25 in the power battery charger unit area 2 and the first traction external interface area 8 be disassembled. Similarly, the detachable panels on the front wall of the frame cabinet 1 also employ an interlocking structure.

[0039] Furthermore, the base frame 24 includes a frame made of square steel tubes welded together, with a stainless steel plate welded to the bottom of the frame. The frame cabinet 1 is detachably and fixedly connected to the vehicle body via the base frame 24. Furthermore, the surface of the frame cabinet 1 is coated with an anti-corrosion and anti-rust coating.

[0040] Because of the presence of the base frame 24, the frame cabinet 1 does not directly contact the vehicle body, and the base frame with welded stainless steel plates in the middle can reduce the possibility of rust at the bottom of the cabinet.

[0041] Furthermore, the left and right walls of the frame cabinet 1 are respectively provided with sealing strip mounting grooves 36 corresponding to the positions of the first inspection door 20 and the second inspection door 21. Sealing strips that cooperate with the first inspection door 20 and the second inspection door 21 are installed in the sealing strip mounting grooves 36. This is to ensure the sealing effect of the first inspection door 20 and the second inspection door 21.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A converter cabinet for a hybrid switching locomotive, characterized by, The frame includes a rectangular frame (1), with the front and rear sidewalls of the frame (1) arranged in a mirror image. The left side of the front wall of the frame (1) is arranged from top to bottom as a power battery charger unit area (2) and a low-voltage signal interface area (3), with a charger interface area (4) further subdivided within the low-voltage signal interface area (3). The right side of the front wall of the frame (1) is arranged from top to bottom as a control unit area (5), a first power module area (6), a first capacitor area (7), and a first traction external interface area (8). The left side of the rear wall of the frame (1) is arranged from top to bottom as a cooling device area (9) and a second power module area (10). The second capacitor area (11) and the water pump / environmental control fan area (12) are separated into a second traction external interface area (13). The right side of the rear wall of the frame cabinet (1) is provided with an auxiliary device area (14) and an auxiliary external interface area (15) from top to bottom. The power module area, capacitor area and first traction external interface area (8) of the front wall of the frame cabinet (1) are connected to the power module area, capacitor area and second traction external interface area (13) of the rear wall of the frame cabinet (1) to form a single area. The power battery charger unit area (2) of the front wall of the frame cabinet (1) is symmetrical to the frame cabinet. (1) Between the auxiliary device area (14) on the rear side wall, there is also a vertically arranged air-cooled heat dissipation duct (16). The upper part of the air-cooled heat dissipation duct (16) is connected to the air outlet of the cooling device. The top of the air-cooled heat dissipation duct (16) is sealed and the bottom is connected to the heat dissipation air outlet (17) located at the bottom of the frame cabinet (1). The air-cooled heat dissipation duct (16) is arranged from top to bottom as the filter reactor area (18) of the charger and the filter reactor / isolation transformer area (19) of the auxiliary transformer / auxiliary unit. The left side wall of the air-cooled heat dissipation duct (16) is provided with a first maintenance door (20) for inspecting the internal components of the air-cooled heat dissipation duct (16). The frame cabinet ( 1) A second maintenance door (21) for inspecting water pumps / environmental control fans is provided on the right side wall; the control unit area (5) is divided by a closed partition, and the remaining areas of the frame cabinet (1) are separated by mounting beams (22). The top of the frame cabinet (1) is also connected to a dustproof top cover (23), and the bottom of the frame cabinet (1) is also connected to a base frame (24); the outer surfaces of the front and rear side walls of the frame cabinet (1) are all connected to detachable door panels (25), and the detachable door panel (25) provided at the cooling device area (9) is an air inlet mesh panel (26). The surfaces of the left and right side walls of the frame cabinet (1) that are not covered by the maintenance door are covered with a skin (27).

2. The hybrid switching cabinet for a hybrid switching locomotive according to claim 1, characterized in that, The overall cross-section of the dustproof top cover (23) is an isosceles trapezoid. The dustproof top cover (23) is welded into a shell (28) by a skin (27). A support frame (29) is provided on the inner side of the shell (28). Multiple handrails (30) are also welded on the dustproof top cover (23). The dustproof top cover (23) and the frame cabinet (1) are detachably connected by multiple fasteners (31).

3. The hybrid switching cabinet for a hybrid switching locomotive of claim 2, wherein, The detachable door panel (25) in the first power module area (6) is provided with a left edge pressure plate (32) and a lower edge pressure plate (33). The left edge pressure plate (32) presses against the outside of the detachable door panel (25) in the power battery charger unit area (2), and the lower edge pressure plate (33) presses against the outside of the detachable door panel (25) in the first traction external interface area (8). The detachable door panel (25) in the second power module area (10) is provided with a right edge pressure plate (34) and a lower edge pressure plate (33). The right edge pressure plate (34) presses against the outside of the detachable door panel (25) in the auxiliary device area (14), and the lower edge pressure plate (33) presses against the outside of the detachable door panel (25) in the water pump / environmental control fan area (12).

4. The hybrid switching cabinet for a hybrid switching locomotive according to any one of claims 1 to 3, characterized in that, The base frame (24) includes a frame made of square steel pipes welded together, with a stainless steel plate welded to the bottom of the frame. The frame cabinet (1) is detachably and fixedly connected to the vehicle body through the base frame (24).

5. The hybrid switching cabinet for a hybrid switching locomotive of claim 4, wherein, The surface of the frame cabinet (1) is coated with an anti-corrosion and anti-rust coating.

6. The hybrid switching cabinet for a hybrid switching locomotive of claim 5, wherein, The left and right walls of the frame cabinet (1) are respectively provided with sealing strip mounting grooves (36) corresponding to the positions of the first inspection door (20) and the second inspection door (21). Sealing strips that cooperate with the first inspection door (20) and the second inspection door (21) are installed in the sealing strip mounting grooves (36).

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