An internal combustion power pack

Abstract

The present invention discloses an internal combustion power pack, which adopts a modular design and rationally arranges a diesel engine, a generator, a radiator, a fuel tank, an air filter, a muffler, a diesel oxidation catalyst, a battery and an electronic control box in an installation space surrounded by a bottom frame and a silent box body; the diesel engine, the generator, the radiator and the battery are centrally arranged, and the fuel tank, the air filter, the muffler, the diesel oxidation catalyst and the electronic control box are surrounded by them; wherein, the fuel tank is connected to the second side wall of the silent box body, and the electronic control box is connected to the first side wall of the silent box body; the air filter is suspended under the top plate of the silent box body; the muffler and the diesel oxidation catalyst are connected to the second end wall of the silent box body; parts that need to be inspected and replaced can be inspected and replaced by simply disassembling the first side wall, the second side wall, the first end wall, the second end wall or the top plate, thereby improving the convenience of maintenance operations.

Description

Technical Field

[0001] The present invention belongs to the technical field of locomotive equipment, and in particular relates to an internal combustion power pack. Background Art

[0002] A shunting locomotive is a locomotive used for shunting operations such as train formation, dismantling, line switching, and vehicle pickup and delivery. Its operating characteristics are frequent starting and stopping, low operating speed, and heavy short-term load. Currently, an increasing number of shunting locomotives are powered by a small internal combustion power pack combined with a traction battery. This type of small internal combustion power pack is mainly used to charge the traction battery and power the locomotive's auxiliary systems, extending the locomotive's maximum continuous service life. The above-mentioned internal combustion power pack has many internal devices, a high degree of integration, and compact installation. Internal equipment such as the fuel coarse filter, fuel fine filter, oil filter, and air filter need to be replaced regularly, and other components may also require maintenance and replacement. Generally, an inspection window is provided on the silent box of the power pack for the inspection and replacement of internal equipment. For example, Chinese invention patent announcement No. CN113503210A introduces a power unit frame for subway vehicles. An inspection door is provided on the silent box for the inspection and replacement of internal equipment. However, components far away from the inspection door cannot be inspected through the inspection door. At the same time, when large components in the internal combustion power pack need to be inspected, it is inconvenient to perform inspection operations through the inspection door. At the same time, the space of the locomotive is limited. The internal space and overall size of the internal combustion power pack need to be compressed during design. The components are very compact. It is difficult to inspect and maintain the internal components of the internal combustion power pack through the inspection door. It is still necessary to hoist the silent box and dismantle all equipment installed on the silent box, resulting in a large maintenance workload. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide an internal combustion power pack having the advantages of reasonable layout, easy maintenance, light and firm structure, and good waterproof and sound insulation effects.

[0004] The present invention discloses an internal combustion power pack, comprising a diesel engine, a generator, a bottom frame, a mute box, a radiator, a fuel tank, an air filter, a muffler, a diesel oxidation catalyst, a battery and an electronic control box;

[0005] The soundproof box includes a first side wall, a second side wall, a first end wall, a second end wall and a top plate, wherein the first side wall, the first end wall, the second side wall and the second end wall are connected in a ring manner, and the top plate is located on the top of the soundproof box;

[0006] The bottom frame and the silent box enclose an installation space for the internal combustion power pack;

[0007] The diesel engine, the generator and the radiator are centrally arranged on the bottom frame, and the fuel tank, the air filter, the muffler, the diesel oxidation catalyst, the battery and the electronic control box are arranged in the installation space around the centrally arranged diesel engine, the generator and the radiator;

[0008] The fuel tank is close to the second side wall, the electric control box is connected to the first side wall, and the first side wall and / or the second side wall are detachably connected to the bottom frame and the top plate respectively.

[0009] When internal equipment requires maintenance, the side walls of the silent box can be removed to perform maintenance: by removing the first side wall, the electrical control box connected to the first side wall can be removed along with it, allowing maintenance operations to be performed on both the electrical control box and the centrally located diesel generator set; by removing the second side wall, the fuel tank can be inspected, greatly simplifying the maintenance steps. The layout of the fuel tank, air filter, muffler, diesel oxidation catalyst, battery, and electrical control box surrounding the centrally located diesel engine, generator, and radiator within the installation space allows maintenance of any component in the internal combustion power pack by removing at most one of the components. For example, by removing the fuel tank adjacent to the second side wall, the centrally located diesel generator set is fully exposed, allowing operators to perform unobstructed maintenance operations on the centrally located diesel generator set. The above-mentioned arrangement allows for maintenance and replacement of components without hoisting the silent box, greatly optimizing the subsequent maintenance procedures for the internal combustion power pack.

[0010] Furthermore, the air filter is suspended under the top plate; and the top plate is detachably connected to the first side wall, the second side wall, the first end wall and the second end wall.

[0011] Furthermore, the muffler and the diesel oxidation catalyst are connected to the second end wall; the first end wall and / or the second end wall are detachably connected to the bottom frame and the top plate respectively.

[0012] Furthermore, at least one movably connected air intake grille is respectively provided on the first side wall and the second side wall; and the battery is arranged close to the air intake grille.

[0013] Furthermore, the silent box further comprises a partition, which separates the internal combustion power pack into a first chamber and a second chamber;

[0014] The diesel engine, the generator, the radiator, the fuel tank, the air filter, the battery and the electric control box are located in the first room;

[0015] The muffler and the diesel oxidation catalyst are located in the second chamber;

[0016] A ventilation window is provided on the top plate corresponding to the second chamber.

[0017] Furthermore, the bottom frame includes a heat exchanger mounting beam, a diesel engine mounting beam and a generator mounting beam which are arranged in parallel in sequence, and a fuel tank mounting beam with a T-shaped structure is provided between the diesel engine mounting beam and the generator mounting beam.

[0018] Furthermore, an upward water retaining plate is provided around the opening of the ventilation window; and the top plate is provided with a rain shielding eave extending outward.

[0019] Furthermore, the bottom frame also includes a bottom plate.

[0020] Furthermore, a waterproof sealing device is provided between the bottom frame and the soundproof box; a waterproof sealing device is provided between the adjacent first side wall, first end wall, second side wall and second end wall; and a plurality of drainage holes are provided on the bottom plate.

[0021] Furthermore, a plurality of mounting fixtures are provided inside the soundproof box for laying and fixing sound insulation and sound absorbing materials.

[0022] The present invention has the following beneficial effects:

[0023] 1) The internal combustion power pack features a rational layout and is easy to maintain. The internal combustion power pack adopts a modular design, rationally arranging the diesel engine, generator, radiator, fuel tank, air filter, muffler, diesel oxidation catalyst, battery, and electronic control box within the installation space enclosed by the bottom frame and the silent enclosure. The diesel engine, generator, and radiator are centrally located, surrounded by the fuel tank, air filter, muffler, diesel oxidation catalyst, battery, and electronic control box. The first side wall, second side wall, first end wall, second end wall, and top plate of the silent enclosure are detachably connected. Furthermore, the fuel tank is connected to the second side wall of the silent enclosure, and the electronic control box is connected to the first side wall of the silent enclosure. The air filter is suspended below the top plate of the silent enclosure, and the muffler and diesel oxidation catalyst are connected to the second end wall of the silent enclosure. Components that require inspection and replacement can be inspected and replaced by simply disassembling the first side wall, second side wall, first end wall, second end wall, or top plate, improving the convenience of maintenance operations.

[0024] 2) The internal combustion power pack is lightweight and robust. The bottom frame features a parallel arrangement of the heat exchanger mounting beam, diesel engine mounting beam, and generator mounting beam. A T-shaped fuel tank mounting beam is positioned between the diesel engine and generator mounting beams. These beams reinforce the bottom frame's lateral strength while supporting the equipment mounted on them. This bottom frame structure reduces the overall weight of the pack while maintaining strength, achieving a lightweight design for the internal combustion power pack.

[0025] 3) The internal combustion power pack has good waterproof performance. A partition is used to divide the internal combustion power pack into the first chamber and the second chamber. Equipment that needs to be exhausted to the outside and related to the exhaust system, such as the muffler and the diesel oxidation catalyst, are located in the second chamber, and the remaining equipment components are located in the first chamber. The first chamber is waterproof and sealed. The top plate is provided with an outward-extending rain shelter, and the outer edge of the ventilation window opening corresponding to the top plate of the second chamber is provided with a water retaining strip to prevent a large amount of rainwater from flowing into the internal combustion power pack. The bottom plate is provided with several drainage holes to prevent internal water accumulation and avoid damage and maintenance of the equipment due to excessive humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of an explosion of an internal combustion power pack provided by some embodiments of the present invention,

[0027] Figure 2 is a top view of the interior of an internal combustion power pack provided by some embodiments of the present invention,

[0028] Figure 3 is an overall schematic diagram of a soundproof box provided by some embodiments of the present invention,

[0029] Figure 4 is an overall schematic diagram of a soundproof box provided by some embodiments of the present invention,

[0030] Figure 5 is an overall schematic diagram of the bottom frame provided by some embodiments of the present invention,

[0031] Figure 6 is a top view of the bottom frame provided by some embodiments of the present invention,

[0032] Figure 7 yes Figure 6 Middle AA section,

[0033] Figure 8 yes Figure 6 Middle BB section,

[0034] Figure 9 is a side view of a soundproof box provided by some embodiments of the present invention,

[0035] Figure 10 yes Figure 9The enlarged diagram of point A in the middle is shown.

[0036] Figure 11 yes Figure 9 Middle CC section view,

[0037] Figure 12 is a side view of a soundproof box provided by some embodiments of the present invention,

[0038] Figure 13 yes Figure 12 Enlarged schematic diagram of point B in the middle.

[0039] Description of reference numerals:

[0040] 1 diesel engine, 2 generator, 3 bottom frame, 4 silent box, 5 radiator, 6 fuel tank, 7 air filter, 8 muffler, 9 diesel oxidation catalyst, 10 battery, 11 electronic control box;

[0041] 31 first frame beam, 32 second frame beam, 33 third frame beam, 34 fourth frame beam, 35 diesel engine mounting beam, 36 generator mounting beam, 36a first fuel tank mounting beam, 36b second fuel tank mounting beam, 37 heat exchanger mounting beam, 38 bottom plate;

[0042] 41 first side wall, 42 second side wall, 43 first end wall, 44 second end wall, 45 top plate, 46 partition plate;

[0043] 311 first lifting block, 312a first side wall stop, 312b second side wall stop, 313, 321 second lifting block, 323, 322a third side wall stop, 322b fourth side wall stop, 331 mute box mounting fasteners, 341, 351 pads, 352 studs, 353 diesel engine mounting plate, 354 diesel engine mounting plate reinforcement, 355 diesel engine mounting beam reinforcement, 356 diesel engine mounting beam tie rod, 361 generator mounting movable nut, 362 generator mounting movable nut seat, 363 generator mounting beam reinforcement, 381 outlet, 382 battery mounting seat, 38 3 drainage hole, 384 first exhaust pipe mounting seat, 385 partition mounting block, 421 air intake grille, 422 sound insulation cotton, 423 sound insulation cotton mounting block, 424 fuel tank top fixing seat, 425 second side wall vertical reinforcement rib, 426 second side wall horizontal reinforcement rib, 427b threaded hole, 428 second side wall mounting bolt, 431 first vertical sealing gasket, 441 second vertical sealing gasket, 443 muffler mounting seat, 444 second exhaust pipe mounting seat, 452 second partition mounting block, 452a partition mounting fastener, 453 top sealing gasket, 453a top plate mounting fastener, 454 air filter mounting bracket. DETAILED DESCRIPTION

[0044] In order to more clearly and completely describe the technical solution of the present invention, the present invention is further described in detail below through specific embodiments with reference to the relevant drawings. It should be understood that the specific embodiments described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention. Various changes can be made within the scope of the present invention. The accompanying drawings show preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosure of the present invention.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] See also Figure 1-4 As shown, the present invention provides an internal combustion power pack, including a diesel engine 1, a generator 2, a bottom frame 3, a silent box 4, a radiator 5, a fuel tank 6, an air filter 7, a muffler 8, a diesel oxidation catalyst 9, a battery 10 and an electronic control box 11; wherein, as Figure 3-4 As shown, the silent box 4 includes a first side wall 41, a second side wall 42, a first end wall 43, a second end wall 44 and a top plate 45; the bottom frame 3 and the silent box 4 form an installation space for the internal combustion power pack; in the above installation space, the layout of each component is as follows: Figure 2As shown, the diesel engine 1, generator 2, and radiator 5 are centrally mounted on the bottom frame 3. The fuel tank 6, air filter 7, muffler 8, diesel oxidation catalyst 9, battery 10, and electronic control box 11 surround the centrally mounted diesel engine 1, generator 2, and radiator 5 within the mounting space. This configuration takes into account the compact locomotive installation space and the maintenance requirements within the internal combustion power pack, resulting in a modular design for the internal combustion power pack. The diesel generator set comprises the diesel engine 1 and generator 2, which are centrally mounted and secured to the bottom frame 3 via shock absorbers. The radiator 5 of the internal combustion power pack primarily consists of a cooling fan, heat exchanger, and associated piping. The cooling fan is mounted on the free end of the diesel engine 1 and driven by the engine, providing power for the intake and exhaust of the box. The heat exchanger is fixed to the bottom frame 3, aligned with the diesel generator set and cooling fan, to cool the diesel engine 1. The fuel tank 6, air filter 7, muffler 8, diesel oxidation catalyst 9, battery 10 and electronic control box 11 are arranged around the central diesel generator set and radiator 5. The above layout only requires removing one component at most when repairing the components of the internal combustion power pack to inspect any of them, greatly simplifying the maintenance steps.

[0048] like Figure 2-4 As shown, in some embodiments provided by the present invention, the fuel tank 6 is connected to the second side wall 42, and the electrical control box 11 is connected to the first side wall 41. The first side wall 41 and / or the second side wall 42 are detachably connected to the bottom frame 3 and the top plate 45, respectively. When internal equipment needs to be repaired, the side walls of the silent box 4 can be removed to meet the needs of internal equipment inspection. For example, by removing the first side wall 41, the electrical control box 11 connected to the first side wall can be removed at the same time, and both the electrical control box 11 and the central diesel generator set can be repaired; by removing the second side wall 42, the fuel tank 6 can be repaired. Furthermore, by removing the fuel tank 6 adjacent to the second side wall 42, the centrally arranged diesel generator set is completely exposed, and the operator can perform unobstructed repair operations on the centrally arranged diesel generator set. The above arrangement allows component repair and replacement without lifting the silent box, greatly optimizing the subsequent repair and maintenance procedures of the internal combustion power pack.

[0049] like Figure 2-4 As shown, in some embodiments provided by the present invention, the air filter 7 is suspended below a top plate 45; the top plate 45 is detachably connected to the first side wall 41, the second side wall 42, the first end wall 43, and the second end wall 44. In this embodiment, by removing the top plate 45, the air filter 7, which has a high maintenance frequency, can be easily repaired. At the same time, all components within the internal combustion power pack are exposed, making it easier for operators to inspect the internal combustion power pack from above.

[0050] like Figure 2-4As shown, in some embodiments provided by the present invention, the muffler 8 and the diesel oxidation catalyst 9 are connected to the second end wall 44; the first end wall 43 and / or the second end wall 44 are detachably connected to the bottom frame 3 and the top plate 45, respectively. In this embodiment, by disassembling the first end wall 43 and / or the second end wall 44 and removing the muffler 8 and the diesel oxidation catalyst 9 connected to the second end wall 44, the components of the internal combustion power pack can be repaired from both ends.

[0051] In some specific application scenarios, the reserved space inside the locomotive is large, and the four walls and the outer periphery of the top plate of the silent box 4 have corresponding operating space. Even when the reserved space inside the locomotive is limited, when the space for placing the internal combustion power pack is insufficient, the location where the internal combustion power pack is placed is limited for inspection from the top surface, or is limited for inspection from the two side surfaces, or is limited for inspection from both end surfaces. However, it is still possible to select a suitable position and a detachable wall or top plate for inspection according to the components to be inspected, without the need to hoist the internal combustion power pack as a whole for inspection. In other specific application scenarios, when the location of the internal combustion power pack is very compact and no maintenance space is reserved, and when the internal combustion power pack needs to be overhauled as a whole, the internal combustion power pack can be hoisted as a whole, and then the first side wall 41, the second side wall 42, the first end wall 43, the second end wall 44 and the top plate 45 can be freely chosen to be disassembled individually or in any combination of surfaces, thereby reducing the disassembly workload during the maintenance process. If necessary, all side surfaces and the top surface can be opened for maintenance work.

[0052] like Figure 3 、 Figure 4 As shown, in some embodiments of the present invention, at least one movable air intake grille is provided on each of the first and second side walls 41, 42; the battery 10 is positioned adjacent to the air intake grille. Routine maintenance of the internal combustion power pack is performed through the air intake grille on the side wall. One side of the air intake grille is hinged to the side wall, and the other side is locked to the side wall via a door lock mechanism. During routine maintenance, the door lock mechanism can be unlocked with a square key, facilitating access to internal equipment while also meeting the diesel engine's air intake requirements.

[0053] like Figure 3As shown, in some embodiments provided herein, the silent housing 4 further includes a partition 46, which separates the internal combustion power pack into a first chamber and a second chamber. Equipment such as the diesel engine 1, generator 2, radiator 5, fuel tank 6, air filter 7, battery 10, and electronic control box 11 are located in the first chamber; the muffler 8 and diesel oxidation catalyst 9 are located in the second chamber; and a ventilator is provided on the top plate 45 corresponding to the second chamber. In this embodiment, equipment related to the exhaust system, such as the muffler 8 and diesel oxidation catalyst 9, that requires external exhaust, is located in the second chamber, while the remaining equipment components are located in the first chamber. This prevents the equipment in the first chamber from being exposed to the outside world and reduces damage to the diesel engine 1, generator 2, radiator 5, fuel tank 6, air filter 7, battery 10, and electronic control box 11 from external factors such as rain.

[0054] like Figure 5 As shown, in some embodiments of the present invention, the bottom frame 3 includes a heat exchanger mounting beam 37, a diesel engine mounting beam 35, and a generator mounting beam 36, arranged in parallel. A T-shaped fuel tank mounting beam is positioned between the diesel engine mounting beam 35 and the generator mounting beam 36. For example, the bottom frame 3 includes a first frame beam 31, a second frame beam 32, a third frame beam 33, a fourth frame beam 34, a diesel engine mounting beam 35, a generator mounting beam 36, a heat exchanger mounting beam 37, a first fuel tank mounting beam 36a, and a second fuel tank mounting beam 36b. These four frame beams form the external basic load-bearing mounting structure. Internally, the diesel engine mounting beam 35, the generator mounting beam 36, and the heat exchanger mounting beam 37 reinforce the frame's lateral strength and support the corresponding equipment mounted thereon. Square ribs are incorporated into the diesel engine mounting beam 35 and the generator mounting beam 36 to enhance overall strength and prevent deformation of the mounting beam structure caused by long-term high vibration of the diesel generator set. The first fuel tank mounting beam 36a and the second fuel tank mounting beam 36b are T-shaped. The first fuel tank mounting beam 36a is welded to the diesel engine mounting beam 35 and the generator mounting beam 36, respectively, reinforcing the longitudinal strength of the central region of the bottom frame 3. The second fuel tank mounting beam 36b is welded to the first fuel tank mounting beam 36a and the second frame beam 32, respectively. The generator mounting beam 36, the first fuel tank mounting beam 36a, and the second fuel tank mounting beam 36b jointly support the installation of the fuel tank 6. This structure of the bottom frame 3 ensures strength while reducing the overall weight, achieving a lightweight design for the internal combustion powertrain.

[0055] like Figure 5 As shown, in some embodiments provided by the present invention, the bottom frame 3 further includes a bottom plate 38. The bottom plate 38 is mainly used to reduce the transmission of noise of the internal combustion power pack to the outside and to carry lightweight components.

[0056] like Figure 4As shown, in some embodiments provided by the present invention, an upward water baffle is provided around the vent opening on the top plate 45; Figure 3 、 4 As shown in Figures 10 and 13, the top plate 45 is provided with a rain shelter extending outward. Figure 11 As shown, in some other embodiments provided by the present invention, a waterproof sealing device is provided between the bottom frame 3 and the silent box 4; a waterproof sealing device is provided between the adjacent first side wall 41, the first end wall 43, the second side wall 42, and the second end wall 44; the waterproof sealing device is such as a sealing gasket. Figure 5 As shown, the bottom plate 38 is provided with a plurality of drainage holes 383. For example, after the bottom plate 38 is connected to the bottom frame 3, such as by welding, the bottom plate 38 is divided into regions, each of which is provided with drainage holes 383, effectively reducing the impact of accumulated water on the components within the box. The aforementioned sealing gasket, water retaining plate, rain shield, and other designs can effectively prevent external rainwater from entering the internal combustion power pack. Internally, the first and second chambers are separated, and bottom drainage is adopted to reduce the impact range of rainwater entering the box body. Internal rainwater is quickly drained in sections to prevent water accumulation and avoid equipment damage due to excessive humidity, which requires repair.

[0057] like Figure 5 As shown, in some embodiments provided by the present invention, a number of mounting fixtures are provided on the inner side of the soundproof box 4 for laying fixed sound insulation and sound-absorbing materials. For example, a plurality of sound insulation cotton mounting plates are welded on the inner surface of the soundproof box 4 for laying sound insulation cotton. The internal combustion power pack provided by the present invention eliminates a large number of maintenance windows, and at the same time, the installation of fixed sound insulation and sound-absorbing materials on the inside can effectively cut off the noise propagation path, which is more conducive to the overall noise control of the internal combustion power pack. At the same time, the use of mounting fixtures such as sound insulation cotton mounting plates to lay fixed sound insulation cotton is more convenient than bonding or directly mechanically fixing the sound insulation cotton. The installation and replacement of sound insulation materials are more convenient.

[0058] The technical solution of the present invention is described below with specific embodiments:

[0059] Example

[0060] like Figure 1-12 As shown, the present invention provides an internal combustion power pack. Figure 1 、 Figure 2 As shown, it includes a diesel engine 1, a generator 2, a bottom frame 3, a silent box 4, a radiator 5, a fuel tank 6, an air filter 7, an exhaust pipe, a muffler 8, a diesel oxidation catalyst 9, a battery 10, and an electronic control box 11. The bottom frame 3 is responsible for directly supporting the diesel engine 1, generator 2, radiator 5, fuel tank 6, battery 10, and silent box 4.

[0061] like Figure 3 、 Figure 4As shown, the silent box body 4 is mainly composed of six parts: a first side wall 41, a second side wall 42, a first end wall 43, a second end wall 44, a top plate 45, and a partition 46. All side walls and end walls are bent on all sides, with a bending angle of 90 degrees and a length of 40 mm. The bent parts at both ends are used to align and connect the side walls and the end walls. The bottom bent part is stably connected to the bottom frame 3 after opening a mounting hole. The top bent part is used to support the top plate 45, and a top plate mounting hole is opened. The side walls, end walls and top plate of the silent box 4 are connected by fasteners, which makes it easy to disassemble any part of the silent box 4 to avoid lifting the entire box.

[0062] The air filter 7 and its piping are suspended below the top plate 45 via the air filter mounting bracket 454. The muffler 8 and exhaust piping are fastened to the second end wall 44 via the muffler mounting base 443 and the second exhaust pipe mounting base 444. The diesel oxidation catalyst 9 is fixed to the second end wall 44 in the same manner. After being fixed, the above equipment is supported by the bottom frame 3. Figure 3 As shown, the second side wall 42 is equipped with two air intake grilles 421. Figure 4 As shown, the first side wall 41 is provided with an access port and an air intake grille. This facilitates access to the fuel filter, oil filter, air filter, and battery. Specifically, the air filter 7 and intake pipe are mounted below the top plate 45 via brackets, with the air intake facing the air intake grille, making it easy to inspect and replace the filter element. The battery 10 is located near the air intake grille for easy maintenance. The air intake grille also provides sufficient air for diesel engine operation and cooling.

[0063] like Figure 5 As shown, the bottom frame 3 is composed of a first frame beam 31, a second frame beam 32, a third frame beam 33, a fourth frame beam 34, a diesel engine mounting beam 35, a generator mounting beam 36, a first fuel tank mounting beam 36a, a second fuel tank mounting beam 36b, a heat exchanger mounting beam 37, a bottom plate 38, and a bottom sealing gasket 39. The first frame beam 31, the third frame beam 33, the second frame beam 32, and the fourth frame beam 34 are connected end to end to form the base frame. The first frame beam 31, the second frame beam 32, the third frame beam 33, and the fourth frame beam 34 are all made of Q235A channel steel, which offers high strength and stability, effectively withstanding the system weight and the impact loads during diesel engine 1 operation. The diesel engine mounting beam 35, the generator mounting beam 36, and the heat exchanger mounting beam 37 are arranged transversely and welded to the first frame beam 31 and the second frame beam 32, reinforcing the lateral strength of the base frame. The first fuel tank mounting beam 36a is welded to the diesel engine mounting beam 35 and the generator mounting beam 36, which not only strengthens the longitudinal strength of the basic frame, but also forms the basic fuel tank mounting structure together with the first fuel tank mounting beam 36a, the second fuel tank mounting beam 36b and the generator mounting beam 36. Figure 8As shown, four sets of generator mounting movable nut seats 362 are welded to the inner surface of the generator mounting beam 36. These seats are used to accommodate and restrain the generator mounting movable nuts 361. This structure is more convenient for installation than directly welding nuts and eliminates installation difficulties caused by welding positioning deviations. Four generator mounting beam reinforcement ribs 363 are welded inside the generator mounting beam 36 to enhance its overall strength.

[0064] The diesel engine mounting beam 35 and the generator mounting beam 36 are both bent from 5 mm Q235A carbon steel. Figure 2 、 Figure 5 As shown, the diesel engine 1 and the generator 2 are assembled in a three-point support manner and fixed to the diesel engine mounting beam 35 and the generator mounting beam 36 through shock absorbers, with one support point on the diesel engine side and two support points on the generator side.

[0065] like Figure 7 As shown, a pad 351 is welded to the upper surface of the diesel engine mounting beam 35 to compensate for the height difference between the diesel engine and generator mounting points, while also providing support for the shock absorber mounting studs 352. Studs 352 are internally threaded and are used to securely mount the diesel engine's shock absorber while also supporting the diesel engine mounting plate 353. Studs 352 are secured to pads 351 and the diesel engine mounting plate 353 using plug welding. This effectively supports the weight and impact of the diesel engine on the diesel engine mounting plate 353 and facilitates the welding and positioning of the upper and lower plates. The diesel engine mounting plate 353 is secured to pads 351 on both sides using fillet welds, while a diesel engine mounting plate reinforcement 354 is used in the middle to provide enhanced support. Pads 351 and diesel engine mounting plate reinforcement 354 are welded using fillet welds, while the diesel engine mounting plate 353 is connected to the diesel engine mounting plate reinforcement 354 using plug welding. This strengthens the support strength of the diesel engine mounting plate 353 while facilitating positioning welding. Two diesel engine mounting beam reinforcement ribs 355 are welded inside the diesel engine mounting beam to enhance the overall strength of the mounting beam. Considering the internal wiring requirements of the internal combustion power pack, diesel engine mounting beam tie rods 356 are welded to the diesel engine mounting beam 35 for wiring.

[0066] like Figure 5 and Figure 6 As shown, the bottom of the bottom frame 3 is welded and fixed to the bottom plate 38. The bottom plate 38 is mainly used to reduce the transmission of noise from the internal combustion power pack and to carry lightweight components. For example, the bottom 38 is provided with a battery mounting seat 382 for mounting the battery 10. In addition, according to the internal equipment layout, the bottom plate 38 will be provided with an outlet 381, and the battery mounting seat 382, ​​the first exhaust pipe mounting seat 384 and the partition mounting block 385 will be welded. Figure 2 、 Figure 3As shown, the partition 46 is connected and fixed to the top plate 45 via the second partition mounting block 452 and partition mounting fasteners 452a, and the bottom is fixed to the bottom frame 3 via the first partition mounting block 385 and fasteners. The partition mounting block 385 is primarily used to connect and fix the lower portion of the partition, and the partition 46 is used to divide the internal combustion power pack into a first chamber and a second chamber. The exhaust system in this embodiment mainly includes equipment such as the muffler 8 and the diesel oxidation catalyst 9. All equipment in the exhaust system is installed in the second chamber. The muffler 8 and the diesel oxidation catalyst 9 are fixed to the second end wall via clamps. The exhaust pipeline is respectively connected and fixed to the top plate, bottom plate, and second end wall. The first exhaust pipe mounting base 384 is primarily used to fix the exhaust pipe connected to the muffler 8 and the diesel oxidation catalyst 9, which transports the exhaust gas generated by the operation of the diesel engine 1.

[0067] like Figure 5 As shown, the first frame beam 31 and the second frame beam 32 have equally spaced soundproof box mounting holes on their upper surfaces for connecting and fixing the bottom of the soundproof box side walls; three equally spaced mounting holes are provided on their lower surfaces for connecting and fixing the internal combustion power pack to the locomotive. The third frame beam 33 and the fourth frame beam 34 have equally spaced soundproof box mounting holes on their upper surfaces for fixing the end walls of the soundproof box. The first side wall stop 312a, the second side wall stop 312b, the third side wall stop 322a and the fourth side wall stop 322b are welded separately for side wall positioning and installation. The first lifting block 311 and the second lifting block 321 are welded between the side plates and the web plates of the first frame beam 31 and the second frame beam 32, respectively, for further strengthening the frame strength and for lifting the internal combustion power pack as a whole.

[0068] like Figure 10 As shown, the second side wall 42 is connected to the second end wall 44 by four sets of fasteners. Nuts are welded to the second end wall 44, and the second side wall 42 is fixed with second side wall mounting bolts 428 and welded nuts inside the second end wall 44. The second side wall 42 and the first end wall 43, the first side wall 41 and the second end wall 44, and the first side wall 41 and the first end wall 43 are all fastened in the same manner.

[0069] like Figure 9 As shown, four sets of fastening nuts are welded to the bent portion at the bottom of the second end wall 44, and four sets of mute box mounting fasteners 331 are used on the bottom frame 3 side to correspond to the welded nuts of the second end wall 44 one by one and are reliably connected. Figure 12 As shown, the first end wall 43 is connected to the bottom frame 3 in the same manner.

[0070] like Figure 10 and Figure 13 As shown, the lifting hole 427a at the right end of the second side wall and the lifting hole 427b at the left end of the second side wall are M12 threaded holes with a hole depth of 20mm, which can be installed with lifting equipment for lifting the side walls. The first side wall 41 has the same lifting structure design.

[0071] like Figure 11 As shown, the inner surface of the second side wall 42 is reinforced with second side wall vertical reinforcement ribs 425 and second side wall transverse reinforcement ribs 426 to enhance overall strength and flatness. Considering the overall height and high center of gravity of the fuel tank 6, a fuel tank top fixing seat 424 is welded to the inner surface of the second side wall 42 to secure the fuel tank and prevent it from tipping over.

[0072] like Figure 11 As shown, multiple sound insulation cotton mounting blocks 423 are welded to the second side wall 42. These multiple sound insulation cotton mounting blocks 423 are combined into a snap-fit ​​form for mounting the sound insulation cotton 422. The remaining first side wall 41, first end wall 43, second end wall 44, and top plate 45 all use the same mounting blocks to fix the sound insulation cotton. This method of fixing the sound insulation cotton is easier to install and replace than adhesive or mechanical fixing methods.

[0073] like Figure 11 As shown, the second end wall 44 and the top plate 45 are fastened together by welding nuts on the top of the end wall and the top plate mounting fasteners 453a, and are waterproofed by the top sealing gasket 453. The first side wall 41, the second side wall 42, and the first end wall 43 and the top plate 45 are all fastened and sealed in the same way.

[0074] like Figure 11 As shown, the second end wall 44 and the second side wall 42 are sealed with a second vertical gasket 441, and the second side wall 42 and the first end wall 43 are sealed with a first vertical gasket 431. The first side wall 41 and the second end wall 44, and the first side wall 41 and the first end wall 43 are fastened and sealed in the same manner.

[0075] like Figure 11 As shown, a bottom sealing gasket 39 is fixed on the upper surface of the bottom frame 3 by bonding to form a waterproof seal between the bottom frame 3 and the silent box 4. Figure 5 and Figure 6 As shown, after the bottom plate 38 is welded to the base frame, the bottom plate 38 is divided into areas, and each area is provided with drainage holes 383, which can effectively reduce the impact of water accumulation. In addition, a water retaining plate is welded at the outlet 381 to effectively prevent rainwater from soaking the cables.

[0076] Compared with the existing technology, this embodiment fully considers the compact installation space of the locomotive and the internal inspection and maintenance needs of the internal combustion power pack, and adopts a modular design for the internal combustion power pack body, which can realize the inspection and replacement of all components without lifting the internal combustion power pack or the silent box, greatly optimizing the subsequent inspection and maintenance space requirements; a large number of inspection windows are eliminated, reducing the workload of daily inspection and maintenance. At the same time, reducing the inspection windows can effectively cut off the noise propagation path, which is more conducive to the overall noise control of the internal combustion power pack; sealing gaskets, water baffles, rain shields and other designs are used to prevent external rainwater from entering, and internal area separation and zoned drainage are adopted to reduce the impact range of rainwater entering the box body, and quickly discharge internal rainwater in zones to prevent water accumulation; through the bottom frame structure design, lighter steel can be used to meet the overall strength requirements, further reduce the frame weight, and realize the lightweight design of the internal combustion power pack.

[0077] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. An internal combustion power pack, characterized in that: It includes a diesel engine (1), a generator (2), a bottom frame (3), a silent box (4), a radiator (5), a fuel tank (6), an air filter (7), a muffler (8), a diesel oxidation catalyst (9), a battery (10), and an electric control box (11); The soundproof box (4) comprises a first side wall (41), a second side wall (42), a first end wall (43), a second end wall (44) and a top plate (45); the first side wall (41), the first end wall (43), the second side wall (42) and the second end wall (44) are connected in a ring in sequence; and the top plate (45) is located on the top of the soundproof box (4); The bottom frame (3) and the silent box (4) enclose an installation space for the internal combustion power pack; The diesel engine (1), the generator (2) and the radiator (5) are centrally arranged on the bottom frame (3); the fuel tank (6), the air filter (7), the muffler (8), the diesel oxidation catalyst (9), the battery (10) and the electric control box (11) surround the centrally arranged diesel engine (1), the generator (2) and the radiator (5) and are arranged in the installation space; The fuel tank (6) is close to the second side wall (42), the electric control box (11) is connected to the first side wall (41), and the first side wall (41) and the second side wall (42) are detachably connected to the bottom frame (3) and the top plate (45), respectively; At least one movably connected air intake grille is respectively provided on the first side wall (41) and the second side wall (42); the battery (10) is provided close to the air intake grille; The silent box (4) further includes a partition (46), wherein the partition (46) separates the silent box (4) into a first chamber and a second chamber; The diesel engine (1), the generator (2), the radiator (5), the fuel tank (6), the air filter (7), the battery (10) and the electric control box (11) are located in the first chamber; The muffler (8) and the diesel oxidation catalyst (9) are located in the second chamber; The top plate (45) is provided with a ventilation window corresponding to the second chamber.

2. The internal combustion power pack according to claim 1, characterized in that: The air filter (7) is suspended under the top plate (45); the top plate (45) is detachably connected to the first side wall (41), the second side wall (42), the first end wall (43) and the second end wall (44).

3. The internal combustion power pack according to claim 1, characterized in that: The muffler (8) and the diesel oxidation catalyst (9) are connected to the second end wall (44); the first end wall (43) and the second end wall (44) are detachably connected to the bottom frame (3) and the top plate (45), respectively.

4. The internal combustion power pack according to claim 1, characterized in that: The bottom frame (3) comprises a heat exchanger mounting beam (37), a diesel engine mounting beam (35), and a generator mounting beam (36) which are sequentially arranged in parallel, and a fuel tank mounting beam with a T-shaped structure is provided between the diesel engine mounting beam (35) and the generator mounting beam (36).

5. The internal combustion power pack according to claim 1, characterized in that: An upward water retaining plate is provided around the opening of the ventilation window; and an outwardly extending rain shielding eave is provided on the top plate (45).

6. The internal combustion power pack according to any one of claims 1 to 5, characterized in that: The bottom frame (3) also includes a bottom plate (38).

7. The internal combustion power pack according to claim 6, characterized in that: A waterproof sealing device is provided between the bottom frame (3) and the silent box (4); a waterproof sealing device is provided between the adjacent first side wall (41), first end wall (43), second side wall (42), and second end wall (44); and a plurality of drainage holes (383) are provided on the bottom plate (38).

8. The internal combustion power pack according to claim 7, characterized in that: A plurality of mounting fixtures are provided on the inner side of the soundproof box (4) for laying and fixing sound insulation and sound absorption materials.

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