CN215662927U

CN215662927U - Suspension fixing structure of engine and gearbox

Info

Publication number: CN215662927U
Application number: CN202122293165.0U
Authority: CN
Inventors: 问晋芳; 王书
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-01-28
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to a suspension fixing structure of an engine and a gearbox, which comprises the engine and the gearbox, wherein the engine and the gearbox are respectively arranged on a frame through suspensions; wherein, one end part of the gearbox far away from the engine is connected with the frame through a suspension. Compared with the traditional gearbox which is connected with the suspension at the end close to the engine, the gearbox which is connected with the suspension at the end far away from the engine is changed into the gearbox which is connected with the suspension, so that the suspension span between the engine and the gearbox is increased, the vibration intensity transmitted by the engine and the gearbox to the suspension is reduced, and meanwhile, the suspension is used as a vibration isolation component to reduce the vibration intensity transmitted to the whole vehicle by a power system consisting of the engine and the gearbox, so that the problems of reducing the whole vehicle shaking amplitude and generating large noise are solved.

Description

Suspension fixing structure of engine and gearbox

Technical Field

The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a suspension fixing structure of an engine and a gearbox.

Background

As the requirements on the reliability and the comfort of the vehicles in the domestic commercial vehicle market are higher and higher, the installation mode of a power system in the vehicles can influence the comfort of the whole vehicles; mainly is the engine and the gearbox which are arranged on the frame, and the vibration of the operation of the engine and the gearbox is transferred to the frame, so that the problems of the shaking amplitude and the large noise of the whole vehicle are caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of large shaking amplitude and large noise of the whole vehicle caused by the installation form of the conventional power system on the vehicle frame, the utility model provides a suspension fixing structure of an engine and a gearbox.

The utility model is realized by the following technical scheme:

a suspension fixing structure of an engine and a gearbox comprises the engine and the gearbox, wherein the engine and the gearbox are respectively arranged on a frame through suspensions; wherein, one end part of the gearbox far away from the engine is connected with the frame through a suspension. Compared with the traditional gearbox which is connected with the suspension at the end close to the engine, the gearbox which is connected with the suspension at the end far away from the engine is changed into the gearbox which is connected with the suspension, so that the suspension span between the engine and the gearbox is increased, the vibration intensity transmitted by the engine and the gearbox to the suspension is reduced, and meanwhile, the suspension is used as a vibration isolation component to reduce the vibration intensity transmitted to the whole vehicle by a power system consisting of the engine and the gearbox, so that the problems of reducing the whole vehicle shaking amplitude and generating large noise are solved.

In addition, the shell of the gearbox is made of aluminum. The gearbox shell made of aluminum effectively reduces the overall weight of the gearbox and the gravity load of the suspension.

The utility model is further improved in that the shell of the gearbox is formed by combining a front shell, a middle shell and a rear shell which are sequentially far away from the engine; the rear shell is connected with the suspension. The gearbox shell is composed of three parts, so that the assembly convenience of internal parts of the gearbox is improved, meanwhile, the rear shell is connected with the suspension, the span between the suspension and the engine suspension is effectively increased, and the technical difficulty in connecting the suspension and the rear shell is reduced.

In a further improvement of the present invention, the middle housing is connected to the front housing and the rear housing by bolts, respectively. And respectively assembling the middle shell and the front shell and the middle shell and the rear shell through bolts.

In a further improvement of the present invention, the two end portions of the middle shell are respectively provided with a positioning pin for improving the butting precision of the middle shell and the front shell and the rear shell. The positioning precision guide of the assembly of the front shell and the rear shell with the middle shell is realized through the positioning pins.

The utility model is further improved that the left side and the right side of the rear shell are respectively provided with a suspension installation part, and the horizontal distance between the installation end surfaces of the two suspension installation parts is equal to the horizontal distance between the two suspensions on the engine; at least two suspension mounting holes are formed in the mounting end face of the suspension mounting portion. The distance between the rear shell and the adjacent suspension is made up by the suspension installation parts on the two sides of the rear shell, and the universality of connection between the existing suspension component and the rear shell is improved.

In a further improvement of the present invention, the suspension mounting portion and the rear housing are integrally cast. The overall structure strength of the suspension installation part and the rear shell is improved, and the cost for changing the existing gearbox shell is effectively reduced.

According to the technical scheme, the utility model has the beneficial effects that: compared with the traditional gearbox which is connected with the suspension at the end close to the engine, the gearbox which is connected with the suspension at the end far away from the engine is changed into the gearbox which is connected with the suspension, the suspension span between the engine and the gearbox is increased, the arrangement form of a suspension system is optimized, the vibration intensity of the suspension transmitted to the suspension by the engine and the gearbox is reduced, and meanwhile, the suspension is used as a vibration isolation component to reduce the vibration intensity transmitted to the whole vehicle by a power system formed by the engine and the gearbox, so that the problems of reducing the whole vehicle shaking amplitude and generating large noise are solved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art powertrain suspension arrangement.

Fig. 2 is a schematic structural diagram of a transmission case in the prior art.

FIG. 3 is a schematic diagram of a power system suspension arrangement according to an embodiment of the present invention.

FIG. 4 is a schematic view of a transmission housing according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the combination of the rear housing and suspension of the transmission according to the embodiment of the present invention.

In the drawings: 1. the engine, 2, the gearbox, 21, the front shell, 22, the middle shell, 23, the rear shell, 24, the suspension mounting part, 25, the suspension mounting hole, 26, the bolt, 27, the positioning pin, 3, the frame, 4 and the suspension.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in the attached drawings, the suspension fixing structure of the engine and the gearbox comprises an engine 1 and a gearbox 2, wherein the engine 1 and the gearbox 2 are respectively installed on a frame 3 through a suspension 4; wherein, one end part of the gearbox 2 far away from the engine 1 is connected with a frame 3 through a suspension 4. Compared with the traditional transmission case 2 that one end close to the engine 1 is connected with the suspension 4, the transmission case 2 that one end far away from the engine 1 is connected with the suspension 4 instead, the span of the suspension 4 on the engine 1 and the transmission case 2 is increased, the arrangement form of the suspension 4 system is optimized, and the vibration intensity of the suspension 4 transmitted to the engine 1 and the transmission case 2 is reduced. The shell of the gearbox 2 is made of aluminum. The shell of the gearbox 2 made of aluminum effectively reduces the overall weight of the gearbox 2 and the gravity load on the suspension 4; while the amplitude of the vibrations of the gearbox 2 also decreases with decreasing overall weight. The shell of the gearbox 2 is formed by combining a front shell 21, a middle shell 22 and a rear shell 23 which are sequentially far away from the engine 1; the rear shell 23 is attached to the suspension 4. The casing of the gearbox 2 consists of three parts, so that the assembly convenience of internal parts of the gearbox 2 is improved, and meanwhile, the rear casing 23 is connected with the suspension 4, so that the span between the suspension 4 and the suspension 4 connected with the engine 1 is effectively increased, and the technical difficulty in connecting the suspension 4 with the rear casing 23 is reduced. The middle shell 22 is connected to the front shell 21 and the rear shell 23 by bolts 26, and positioning pins 27 for improving the butting precision of the middle shell 22 and the front shell 21 and the rear shell 23 are respectively arranged at two end portions of the middle shell 22. The middle shell 22 and the front shell 21 are respectively assembled with the middle shell 22 and the rear shell 23 through bolts 26; the positioning accuracy guide of the assembly of the front case 21 and the rear case 23 with the middle case 22, respectively, is achieved by the positioning pins 27.

The left side and the right side of the rear shell 23 are respectively provided with an integrally cast suspension installation part 24, and the horizontal distance between the installation end surfaces of the two suspension installation parts 24 is equal to the horizontal distance between the two suspensions 4 on the engine 1; four suspension mounting holes 25 which are arranged in a rectangular shape are formed in the mounting end face of the suspension mounting portion 24. To improve the overall structural strength of the suspension mounting portion 24 and the rear housing 23 and to effectively reduce the cost of modifying the housing of the existing transmission 2. The distance between the suspension installation parts 24 on the two sides of the rear shell 23 and the adjacent suspension 4 is made up, and the universality of connection between the existing suspension 4 part and the rear shell 23 is improved.

After the suspension installation part 4 on the gearbox 2 is changed to the rear shell 23, in order to adapt to the existing automobile parts to the maximum extent, the suspension installation parts 24 arranged on the two sides of the rear shell 23 of the gearbox 2 are not possibly at the same height, so that the suspension 4 suitable for the frame 3 is selected.

In conclusion, when the device is used, the rear shell 23 of the gearbox 2 is connected with the frame 3 through the suspension 4, the arrangement mode is optimized compared with the traditional arrangement mode of the suspension 4, the span of the suspension 4 between the engine 1 and the gearbox 2 is prolonged, and the vibration strength of the suspension 4 transmitted to the engine 1 and the gearbox 2 is reduced. The shell of the gearbox 2 made of aluminum effectively reduces the overall weight of the gearbox 2 and the gravity load on the suspension 4; while the amplitude of the vibrations of the gearbox 2 also decreases with decreasing overall weight. The distance between the suspension installation parts 24 on the two sides of the rear shell 23 and the adjacent suspension 4 is made up, and the universality of connection between the existing suspension 4 part and the rear shell 23 is improved.

Compared with the traditional suspension fixing structure for the engine and the gearbox, the suspension fixing structure for the engine and the gearbox is characterized in that one end of the gearbox, which is close to the engine, is connected with the suspension, and the other end of the gearbox, which is far away from the engine, is connected with the suspension, so that the suspension span on the engine and the gearbox is increased, the arrangement form of a suspension system is optimized, the vibration intensity of the suspension transmitted to the suspension by the engine and the gearbox is reduced, and the vibration intensity transmitted to the whole vehicle by a power system formed by the engine and the gearbox is reduced by using the suspension as a vibration isolation component, so that the problems of reducing the whole vehicle shaking amplitude and generating large noise are solved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suspension fixing structure of an engine and a gearbox is characterized by comprising the engine (1) and the gearbox (2), wherein the engine (1) and the gearbox (2) are respectively installed on a frame (3) through suspensions (4); one end part of the gearbox (2) far away from the engine (1) is connected with the frame (3) through a suspension (4).

2. The suspension fixing structure of the engine and the gearbox as recited in claim 1, characterized in that the casing of the gearbox (2) is made of aluminum.

3. The suspension fixing structure of the engine and the gearbox as claimed in claim 1 or 2, characterized in that the casing of the gearbox (2) is formed by combining a front casing (21), a middle casing (22) and a rear casing (23) which are sequentially far away from the engine (1); the rear shell (23) is connected with the suspension (4).

4. The suspension fixing structure of an engine and a gearbox according to claim 3, characterized in that the middle shell (22) is connected with the front shell (21) and the rear shell (23) through bolts (26) respectively.

5. The suspension fixing structure of the engine and the gearbox as claimed in claim 4, characterized in that, the two ends of the middle shell (22) are respectively provided with a positioning pin (27) for improving the butting precision of the middle shell (22) with the front shell (21) and the rear shell (23).

6. The suspension fixing structure of the engine and the gearbox as claimed in claim 3, characterized in that the left and right sides of the rear shell (23) are respectively provided with suspension mounting parts (24), and the horizontal distance between the mounting end surfaces of the two suspension mounting parts (24) is equal to the horizontal distance between the two suspensions (4) on the engine (1); and the mounting end surface of the suspension mounting part (24) is provided with at least two suspension mounting holes (25).

7. The suspension fixing structure of the engine and the gearbox as claimed in claim 6, characterized in that the suspension mounting part (24) and the rear shell (23) are integrally cast.