CN201872590U

CN201872590U - Engine suspension structure of truck

Info

Publication number: CN201872590U
Application number: CN201020566442XU
Authority: CN
Inventors: 刘伟; 邵谱; 罗金桥
Original assignee: SPECIAL VEHICLE TECHNOLOGY CENTER OF CHINA SANJIANG SPACE ESTATE GROUP
Current assignee: SPECIAL VEHICLE TECHNOLOGY CENTER OF CHINA SANJIANG SPACE ESTATE GROUP
Priority date: 2010-10-19
Filing date: 2010-10-19
Publication date: 2011-06-22
Anticipated expiration: 2020-10-19

Abstract

The utility model relates to an engine suspension structure of a truck, and belongs to the field of truck manufacturing. The engine suspension structure comprises two front support assemblies, two rear support assemblies and two transmission rear end supports, and is characterized in that a left support and a right support are further included and respectively connected with two sides of a flywheel casing of an engine and the two transmission rear end supports, and the engine and a transmission are connected into a whole; and the two rear support assemblies are arranged on the left support and the right support. The engine suspension structure has the benefits that the bending moment of the linkage surface of the flywheel casing is constantly zero through reasonably positioning back supports of the engine; after auxiliary shorings are omitted, the bearing points on a vehicle frame are decreased, so that the auxiliary restraint is eliminated, and the stress is improved; and the rigidity compatibility and the optimization difficulty of the bearing points are reduced, and meanwhile, the integral arrangement is facilitated.

Description

The goods carrying vehicle suspension structure of engine

Technical field

The utility model relates to a kind of goods carrying vehicle suspension structure of engine, belongs to the manufacturing field of goods carrying vehicle.

Background technology

The engine mounting of common goods carrying vehicle dynamic assembly adopts the four-point supporting structure usually, support behind 2 engine front supports, 2 driving engines, change-speed box directly docks installation with flywheel shell of engine, because change-speed box weight produces moment of flexure to the clutch bell conjunction plane, stressed for improving, in the change-speed box rear end supplemental support is set simultaneously.

There is following shortcoming in this arrangement:

1) change speed gear box supplemental support place is provided with elastic element usually, in the vehicle ' process, the supplemental support power that the elastic element change in displacement causes the change speed gear box place is applied changes, the moment of flexure (bearing) that this supplemental support power produces can not be offset fully with the moment of flexure (just) that change-speed box weight produces, make clutch bell conjunction plane place bear big moment of flexure, stressing conditions is abominable, may occur surpassing the momentary overload operating mode that clutch bell conjunction plane place allows the maximal bending moment value when serious;

2) this arrangement bearing point on chassis frame is many, forms multi-point constraint statically indeterminate system (engine front support R _F, support F behind the driving engine _M, change-speed box supplemental support R _B) and relative distance far away, when vehicle ' or operation, the distortion between the vehicle frame bearing point can cause driving engine and case of transmission to bear additional reverse stress, stressing conditions is relatively poor;

3) the change-speed box supplemental support need be provided with attachment point on vehicle frame, need calculate parameters such as supplemental support elastic element rigidity, stroke simultaneously, has increased design difficulty to a certain extent and has had influence on car load general layout simultaneously.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of reliable goods carrying vehicle suspension structure of engine.

For solving the problems of the technologies described above, the technical scheme that the utility model is taked is:

A kind of goods carrying vehicle suspension structure of engine, comprise two preceding support assemblies, support assembly after two, two change-speed box rear ends are supported, it is characterized in that, also comprise left and right sides support, left and right sides support connects the flywheel shell of engine both sides respectively and two change-speed box rear ends are supported, driving engine and change-speed box are fused support assembly after respectively being provided with on the support of the left and right sides.

Described two preceding support assemblies, support assembly adopts the elastic shock attenuation rubber cushion after two.

The beneficial effects of the utility model are: 1) by the position of supporting-point behind the driving engine rationally is set, make clutch bell conjunction plane place moment of flexure be always 0, be not subjected to the influence of vehicle ' and operation working conditions change, the stressing conditions ideal; 2) after the cancellation supplemental support, the bearing point on the vehicle frame reduces, and additional constraint is eliminated, and simultaneously, the stress that the distortion between the vehicle frame bearing point causes is mainly born by left and right sides support, can not cause case of transmission to bear additional reverse stress, improves stressed; 3) bearing point on the vehicle frame reduces, and has reduced each bearing point Rigidity Matching and has optimized difficulty, is convenient to total arrangement simultaneously.

Description of drawings

Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.

Fig. 1 is a structure front elevation of the present utility model.

The specific embodiment

In an airport crash fire vehicle chassis layout, as Fig. 1, driving engine 4 directly docks with change-speed box 1, left and right sides support 2 connects the flywheel shell of engine and the change-speed box rear end strong point, two rear support assemblies 3 that the elastic shock attenuation rubber cushion constitutes are separately fixed on the left and right sides support 2, left-right symmetric constitutes the strong point behind two of whole engine mounting, prop up a seat assembly 5 before two that the elastic shock attenuation rubber cushion constitutes and be fixed on front of the engine, left-right symmetric constitutes two preceding strong points of whole engine mounting, and the front and back strong point forms 4 supporting constructions of representative type.

It should be noted last that, the above specific embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. goods carrying vehicle suspension structure of engine, comprise two preceding support assemblies, support assembly after two, two change-speed box rear ends are supported, it is characterized in that, also comprise left and right sides support, left and right sides support connects the flywheel shell of engine both sides respectively and two change-speed box rear ends are supported, driving engine and change-speed box are fused support assembly after respectively being provided with on the support of the left and right sides.

2. goods carrying vehicle suspension structure of engine according to claim 1 is characterized in that, described two preceding support assemblies, and support assembly adopts the elastic shock attenuation rubber cushion after two.