CN217033032U

CN217033032U - Fixing support for NVH (noise, vibration and harshness) bench test of engine

Info

Publication number: CN217033032U
Application number: CN202220385115.7U
Authority: CN
Inventors: 杨晓丽; 王苗苗
Original assignee: Anhui Quanchai Engine Co Ltd
Current assignee: Anhui Quanchai Engine Co Ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-22
Anticipated expiration: 2032-02-23

Abstract

The utility model discloses a fixing support for an engine NVH bench test, which comprises a base, supports and support plates, wherein the supports are vertically fixed on two sides of the base, the support plates are fixed on the tops of the two supports, the support plates are obliquely arranged to enable an exhaust pipe to be attached to the support plates, and fixing holes are formed in the support plates. The support plate has the advantages that the exhaust pipe is supported by the support plate, and the exhaust pipe is bound and fixed on the support plate by the iron wire penetrating through the fixing hole, so that the exhaust pipe is prevented from vibrating in the NVH test process of the engine, and the accuracy of the NVH test result of the engine is ensured.

Description

Fixing support for NVH (noise, vibration and harshness) bench test of engine

Technical Field

The utility model relates to the technical field of engines, in particular to a fixing support for an NVH (noise, vibration and harshness) bench test of an engine.

Background

During the running process of the vehicle, the axle plays the roles of transmitting power and bearing load, and a main speed reducer and a differential in the axle can generate vibration and noise due to gear processing, assembly, abrasion and the like during the working process, so that the main speed reducer and the differential greatly contribute to the acceleration noise outside the vehicle and the noise inside the vehicle. Along with the improvement of the requirements of people on living quality, the requirements of people on noise, vibration and harshness (NVH) of the whole vehicle are higher and higher, the requirements on NVH of an engine are higher and higher, and the engine needs a special NVH laboratory to carry out NVH bench tests on the engine. However, the exhaust pipe vibrates greatly in the NVH test process of the engine, and the accuracy of the NVH test result of the engine is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of how to ensure the accuracy of the NVH test result of the engine.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a fixed bolster that experimental usefulness of engine NVH rack, includes base, support and backup pad, the equal vertical being fixed in base both sides the support, two support tops are fixed the backup pad, the backup pad slope sets up and causes the blast pipe laminating in the backup pad, be equipped with the fixed orifices in the backup pad.

Support the blast pipe through the backup pad to run through the fixed orifices through the iron wire and fix the blast pipe ligature in the backup pad, prevented that the blast pipe from vibrating in engine NVH experimentation, guaranteed the accuracy of engine NVH test result.

Preferably, the bracket is fixed on the base through a fixing bolt.

Preferably, the base is provided with a through hole, the support is provided with a vertical waist-shaped hole, and the fixing bolt sequentially penetrates through the through hole and the vertical waist-shaped hole to fix the support on the base; through the setting in vertical waist type hole, can realize the altitude mixture control of support on the base, and then realize the altitude mixture control of backup pad, satisfy the test demand of blast pipe length and the height of different engine models.

Preferably, the bracket is fixed on the base through two fixing bolts.

Preferably, a fixing plate is further fixed between the brackets.

Compared with the prior art, the utility model has the beneficial effects that:

1. the exhaust pipe is supported through the support plate, and the exhaust pipe is fixed on the support plate through the iron wire penetrating through the fixing holes, so that the exhaust pipe is prevented from vibrating in the engine NVH experiment process, and the accuracy of the engine NVH experiment result is guaranteed.

2. Through the setting in vertical waist type hole, can realize the altitude mixture control of support on the base, and then realize the altitude mixture control of backup pad, satisfy the test demand of blast pipe length and height of different engine models.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

fig. 2 is a left side view of an embodiment of the utility model;

fig. 3 is a schematic view of an installation structure of an embodiment of the utility model;

FIG. 4 is a schematic structural view of a base according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a bracket according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 5, the embodiment discloses a fixed bolster of experimental usefulness of engine NVH rack, including base 1, support 2 and

backup pad

3, 1 both sides of base are all vertically fixed with support 2, and two 2 tops of supports are fixed

backup pad

3, 3 slopes to set up of backup pad and causes blast pipe 4 to laminate in backup pad 3, be equipped with fixed orifices 31 in the backup pad.

Support blast pipe 4 through backup pad 3 to run through fixed orifices 31 through the iron wire and fix blast pipe 4 ligature in backup pad 3, prevented that blast pipe 4 from vibrating in engine NVH experimentation, guaranteed the accuracy of engine NVH test result.

The base 1 is provided with a through hole 11, the support 2 is provided with a vertical waist-shaped hole 21, and the support 2 sequentially penetrates through the through hole 11 and the vertical waist-shaped hole 21 through a fixing bolt 5 to be fixed on the base 1. Through the setting of vertical waist type hole 21, can realize the altitude mixture control of support 2 on base 1, and then realize the altitude mixture control of backup pad 3, satisfy the test demand of 4 length of blast pipes and height of different engine model.

Further, 1 every side of base is equipped with two through-holes 11, and support 2 is fixed through two fixing bolt 5, guarantees that support 2 can stable fixation on base 1, prevents that support 2 from rotating on base 1, guarantees that backup pad 3 can be with the stable laminating of blast pipe 4.

Further, a fixing plate 6 is fixed between the supports 2, so that the supports 2 can be further stably fixed on the base 1.

The working principle of the utility model is as follows: fix base 1 in engine NVH laboratory floor ditch inslot, according to 4 lengths of blast pipe of different engine models and altitude mixture control support 2's height, guarantee that backup pad 3 can be stably laminated with blast pipe 4, then locking fixing bolt 5 fixes support 2 on base 1 steadily, runs through fixed orifices 31 through the iron wire at last and fixes 4 ligatures of blast pipe in backup pad 3, has prevented that blast pipe 4 from vibrating in the engine NVH experimentation, has guaranteed the accuracy of engine NVH test result.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claims.

The above-mentioned embodiments only represent the embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the concept of the present invention, and these embodiments are all within the protection scope of the present invention.

Claims

1. The utility model provides a fixed bolster of experimental usefulness of engine NVH rack which characterized in that: including base, support and backup pad, the equal vertical being fixed with in base both sides the support, two support tops are fixed the backup pad, the backup pad slope sets up and causes the blast pipe laminating in the backup pad, be equipped with the fixed orifices in the backup pad.

2. The fixing bracket for the NVH stand test of the engine according to claim 1, is characterized in that: the support is fixed on the base through a fixing bolt.

3. The fixing bracket for the NVH stand test of the engine according to claim 2, characterized in that: the support is characterized in that a through hole is formed in the base, a vertical waist-shaped hole is formed in the support, and the fixing bolt penetrates through the through hole and the vertical waist-shaped hole in sequence to fix the support on the base.

4. The fixing bracket for the NVH rack test of the engine according to claim 2, wherein: the support is fixed on the base through two fixing bolts.

5. The fixing bracket for the NVH rack test of the engine as claimed in claim 1, wherein: and a fixing plate is also fixed between the brackets.