CN218913028U

CN218913028U - Split flywheel housing integrating heat dissipation air duct and EGR (exhaust gas Recirculation) bracket

Info

Publication number: CN218913028U
Application number: CN202223046724.9U
Authority: CN
Inventors: 方浩; 米贵; 杨田云; 杨青青; 张强; 吴亦宁
Original assignee: CRRC Qishuyan Co Ltd
Current assignee: CRRC Qishuyan Co Ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-04-25
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to a flywheel housing, in particular to a split flywheel housing integrating a heat dissipation air duct and an EGR (exhaust gas recirculation) support, which comprises a flywheel housing, wherein an engine support is arranged on the outer circular surface of the flywheel housing, a positioning concave circle is arranged in a flange end at the rear end of the flywheel housing, a mounting opening which is in butt joint with an output end of a crankcase is arranged on the front end surface of the flywheel housing, a connecting opening is arranged at the top of the flywheel housing, the connecting opening is connected with an EGR support mounting seat, a heat dissipation air duct opening for heat dissipation is arranged on the side surface of the EGR support mounting seat, and an EGR cooler is arranged on the top surface of the EGR support mounting seat. According to the utility model, the flywheel housing has an axial space, the EGR support mounting seat is integrated above the flywheel housing, the characteristic that the EGR cooler is suitable for being arranged at a high position is utilized, and the function of the heat dissipation air duct of the generator is integrated below the EGR support mounting seat, so that the compactness and the light weight of the whole design of the generator set are facilitated.

Description

Split flywheel housing integrating heat dissipation air duct and EGR (exhaust gas Recirculation) bracket

Technical Field

The utility model relates to a flywheel housing, in particular to a split flywheel housing integrating a heat dissipation air duct and an EGR bracket.

Background

With the development and application of technologies such as two-stage supercharging and EGR of an engine, the surrounding of a crankcase needs to be externally hung with more and more auxiliary equipment, and space and pipeline arrangement are more and more complicated; in the application occasions of a closed factory building or an inner corridor type locomotive and the like, the diesel generator set needs to be designed into a closed heat dissipation air duct for a generator, and meanwhile, the heat dissipation problem of the generator matched with a high-power engine also brings out greater demands on the whole space and weight of the integrated unit.

The flywheel housing plays a role in connecting and positioning between the engine and the driven piece, the split flywheel housing has the functions, the positioning problem between the split flywheel housing and the crank case and the crank shaft is also considered, partial engine supports are also arranged on two sides of the flywheel housing, and most of flywheel housings at present adopt thin-wall structures, so that the flywheel housing has the advantages of simple structure, low functional integration level and poor rigidity.

Disclosure of Invention

The utility model aims to solve the defects, and provides the split flywheel housing integrating the cooling air duct and the EGR bracket, wherein the EGR bracket mounting seat for mounting the EGR cooler and the generator cooling air duct are integrated, so that the whole design of the generator set is compact and light.

In order to overcome the defects in the background art, the technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a split type flywheel housing of integrated heat dissipation wind channel and EGR support, includes the flywheel housing, set up the engine support on the flywheel housing outer disc, set up the location concave circle in the flange end of flywheel housing rear end, be equipped with on the preceding terminal surface with the erection joint of crankcase output and install the flywheel housing top sets up the connector, the connector sets up with the connection of EGR support mount pad, EGR support mount pad side is equipped with and is used for radiating heat dissipation wind channel mouth, sets up the EGR cooler on the top surface.

Further improvement comprises that windows are symmetrically arranged on two sides of the outer circle of the flywheel shell, a cover plate is arranged on the windows in a covering mode, and the windows are fixedly connected with the cover plate through penetrating bolts.

Further improvements include the use of a closed or a blind cover for the window.

Further improvement comprises that the top of the EGR support mounting seat is provided with fixing ribs in a distributed mode, and the upper ends of the fixing ribs are fixedly connected with the EGR cooler.

Further improvement comprises annular staggered ribs on the inner wall of the mounting port, positioning holes are formed in the ribs, and the positioning holes are fixedly connected with the output end of the crankcase through inserted positioning pins and screws.

Further improvement comprises that a rib plate for separation is arranged in the EGR bracket mounting seat.

Further improvement comprises that the lower part of the outer circular wall of the flywheel shell is provided with an observation hole.

The beneficial effects of the utility model are as follows: the flywheel housing has an axial space, so that the axial space requirement of the main generator on a self-radiating air duct is reduced, the whole space occupation and weight of the generator set are further reduced, the heat dissipation is facilitated, the compactness and the light weight of the set design are facilitated, and the increasingly severe set structural design requirement is met; through integrating the EGR support mount pad, utilize the upper portion space of conventional circular flywheel shell to settle the higher EGR cooler of integrated level, reduced crankcase attach and hang equipment space and fixed position demand.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is an axial cross-sectional view of the present utility model centered on a gusset;

FIG. 2 is an axial cross-sectional view of the present utility model centered on an EGR support mount duct;

FIG. 3 is an isometric view of the utility model;

in the figure, a 1-EGR cooler, a 2-EGR bracket mounting seat, a 3-crankcase, a 4-cover plate, a 5-engine support, a 6-observation hole, a 7-flywheel shell, 8-ribs, 9-positioning holes, 10-windows, 11-positioning concave circles, 12-heat dissipation air passage openings, 13-fixing ribs, 14-connecting openings, 15-mounting openings and 16-rib plates are shown.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. Embodiments of the utility model are described herein in terms of various specific embodiments, including those that are apparent to those of ordinary skill in the art and all that come within the scope of the utility model.

According to the split flywheel housing integrating a heat dissipation air duct and an EGR support, as shown in fig. 2 and 3, the split flywheel housing comprises a flywheel housing 7, an engine support 5 is arranged on the outer circular surface of the flywheel housing 7, assembly connection of the engine support 5 is realized through bolts, a positioning concave circle 11 is arranged in the flange end of the rear end of the flywheel housing 7, a mounting opening 15 which is in butt joint with the output end of a crank case 3 is arranged on the front end surface, radial positioning is realized between the flywheel housing 7 and a main generator through the positioning concave circle 11 in the flange end, the mounting position requirement of a generator stator part is ensured, the top of the flywheel housing 7 is provided with a connecting port 14, the connecting port 14 is connected with an EGR support mounting seat 2, an EGR cooler 1 is arranged on the side surface of the EGR support mounting seat 2, the axial space requirement of the flywheel housing 7 is reduced by adopting the embodiment, the axial space requirement of a main generator on the self heat dissipation air duct is further reduced, the whole space occupation and the weight of the generator set are further reduced, the compactness and the lightweight of the set design are facilitated, the set design requirement of the set is met, the integrated structure design is realized by the aid of the positioning concave circle 11 in the flange end, the mounting position of the integrated EGR support mounting seat 2 can be detached independently according to the requirement of the conventional flywheel housing 7, the mounting position of the integrated flywheel housing 1 and the integrated EGR support mounting seat can be detached by the integrated position of the integrated support, and the integrated position of the integrated EGR support can be reduced by the integrated position of the integrated flywheel housing 2, and the integrated position can be easily and the cast by the whole position of the engine.

The window 10 is symmetrically arranged on two sides of the outer circle of the flywheel housing 7, the cover plate 4 is arranged on the window 10 in a covering mode, the window 10 and the cover plate 4 are fixedly connected through penetrating bolts, the cover plate 4 is convenient to open, the window 10 is convenient for assembly work between a crankshaft and a coupler, meanwhile, the window 10 is also used for work such as turning and crankshaft angle indication numerical value observation record during maintenance, the window 10 adopts a closed or shielding cover plate, and the function that a heat dissipation air duct of a generator flows to a tissue or a foreign matter is shielded is achieved.

The window 10 adopts a closed or shielding cover plate 4 to realize the function of shielding the flow direction of a heat dissipation air channel of a generator to a tissue or foreign matters, the heat dissipation air of the generator is directly scattered in a power room through the flywheel housing 7 aiming at an outer corridor locomotive, at this time, the window 10 cover plate 4 of the flywheel housing 7 is selected to be shielded, the heat dissipation area can be increased by allowing hot air to be scattered from the side surface, the effect of forming inner and outer isolation shielding on a rotating flywheel is realized, and the window 10 is selected to be closed to cover the plate 4 so as to form a relatively closed air channel drainage because the power room cannot be too high, and the flywheel housing 7 and a connecting air channel thereof are responsible for leading the heat dissipation air of the generator out of the locomotive aiming at the inner corridor locomotive.

The top of the EGR support mounting seat 2 is provided with fixing ribs 13 in a distributed mode, the upper ends of the fixing ribs 13 are fixedly connected with the EGR cooler 1, structural rigidity is increased, and heat dissipation of the EGR cooler 1 is facilitated.

The rib 8 for the reinforcing structure is arranged on the inner wall of the mounting opening 15 in an annular staggered mode, the positioning holes 9 are formed in the rib 8, the positioning holes 9 are connected with the output end of the crankcase 3 through positioning pins and screws which are inserted into the positioning holes, the positioning holes are positioned and fixed, radial positioning is achieved between the flywheel housing 7 and the crankcase 3 through the positioning pins, and the mounting shape and position requirements of the positioning concave circle 11 of the generator at the output end are guaranteed.

According to the illustration in fig. 1, the rib plates 16 for separation are arranged in the EGR support mounting seat 2, which plays a role in guiding the heat dissipation air duct, and improves the stability and structural rigidity of the EGR support mounting seat 2.

An observation hole 6 is formed in the outer circular wall of the flywheel housing 7 and is used for timely finding out water and oil leakage faults at the output end of the engine body.

Working principle: the flywheel housing 7 is fixedly connected with the crankcase 3 through a positioning pin penetrating through a positioning hole 9, a positioning concave circle 11 in a flange at the front end of the flywheel housing 7 is in butt joint with a main generator, an EGR (exhaust gas Recirculation) support mounting seat 2 is fixedly connected to the flywheel housing 7, an EGR cooler 1 is mounted on the EGR support mounting seat 2, and the main generator in the crankcase works to generate heat and is discharged through a heat dissipation air channel 12 and a window 10.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides an integrated heat dissipation wind channel and EGR support's split type flywheel housing, includes flywheel housing (7), set up engine support (5) on flywheel housing (7) outer disc, set up location concave circle (11) in the flange end of flywheel housing (7) rear end, preceding terminal surface on be equipped with mounting hole (15) of crankcase (3) output butt joint installation, characterized by, flywheel housing (7) top sets up connector (14), connector (14) are connected with EGR support mount pad (2) and are set up, EGR support mount pad (2) side is equipped with and is used for radiating heat dissipation wind channel mouth (12), sets up EGR cooler (1) on the top surface.

2. The split flywheel housing of claim 1, wherein the integrated cooling air duct and EGR support is characterized by: windows (10) are symmetrically arranged on two sides of the outer circle of the flywheel housing (7), a cover plate (4) is arranged on the windows (10) in a covering mode, and the windows (10) are fixedly connected with the cover plate (4) through penetrating bolts.

3. The split flywheel housing integrating a heat dissipation air duct and an EGR support as claimed in claim 2, wherein: the window (10) adopts a closed or shielding cover plate (4).

4. The split flywheel housing of claim 1, wherein the integrated cooling air duct and EGR support is characterized by: the top of the EGR support mounting seat (2) is provided with fixing ribs (13) in a distributed mode, and the upper ends of the fixing ribs (13) are fixedly connected with the EGR cooler (1).

5. The split flywheel housing of claim 1, wherein the integrated cooling air duct and EGR support is characterized by: ribs (8) are annularly staggered on the inner wall of the mounting opening (15), positioning holes (9) are formed in the ribs (8), and the positioning holes (9) are fixedly connected with the output end of the crankcase (3) through inserted positioning pins and screws.

6. The split flywheel housing of claim 1, wherein the integrated cooling air duct and EGR support is characterized by: and rib plates (16) for separation are arranged in the EGR bracket mounting seat (2).

7. The split flywheel housing of claim 1, wherein the integrated cooling air duct and EGR support is characterized by: an observation hole (6) is formed in the lower portion of the outer circular wall of the flywheel housing (7).