阅读说明：本技术 发动机试验台架降噪装置 (Noise reduction device for engine test bed ) 是由 方贤兵 杨咸珠 曹文霞 王海飞 孙大为 于 2019-11-29 设计创作，主要内容包括：本发明公开一种发动机试验台架降噪装置,包括一安装结构,所述安装结构盖设于发动机降噪管路,且具有呈弧面状的工作壁面,所述工作壁面用于与发动机降噪管路合围而形成工作腔,所述工作腔用于铺设消声隔音材料和阻燃隔温材料。本发明减少了发动机消声试验中产生的烟雾对工作人员健康的损害和对空气的污染,减少了安全隐患,避免了对发动机降噪管路进行重复包裹,减少了工作人员的重复作业。(The invention discloses a noise reduction device of an engine test bed, which comprises a mounting structure, wherein the mounting structure covers an engine noise reduction pipeline and is provided with a cambered working wall surface, the working wall surface is used for surrounding the engine noise reduction pipeline to form a working cavity, and the working cavity is used for paving a noise elimination and sound insulation material and a flame retardant and heat insulation material. The invention reduces the damage of smoke generated in the engine noise elimination test to the health of workers and the pollution to the air, reduces the potential safety hazard, avoids repeatedly wrapping the noise reduction pipeline of the engine and reduces the repeated operation of the workers.)

1. The utility model provides a device of making an uproar falls in engine test bench, its characterized in that includes a mounting structure, the pipeline of making an uproar falls in the engine is located to the mounting structure lid, and has the work wall that is the cambered surface form, the work wall is used for making an uproar the pipeline with the engine and surrounds and form the working chamber, the working chamber is used for laying noise elimination sound insulation material and fire-retardant heat insulation material.

2. The engine test rig noise reduction apparatus of claim 1, wherein the mounting structure comprises a surrounding tube and a mating tube, the surrounding tube being movably connected to one end of the mating tube to adjust the area of the working wall or the volume of the working chamber.

3. The engine test bench noise reduction device according to claim 1, wherein the inner wall or the outer wall of the surrounding pipe is provided with a sliding groove extending along the length direction thereof, and the engaging pipe is provided with a sliding block slidably engaged with the sliding groove to be slidably mounted on the sliding groove.

4. The engine test bed noise reduction device according to claim 3, wherein the surrounding pipe is provided with a locking through groove extending along the length direction of the surrounding pipe, the matching pipe is provided with a matching through groove corresponding to the locking through groove, and the engine test bed noise reduction device further comprises a locking part, and the locking part is used for matching with the locking through groove and the matching through groove so as to fix the relative position of the surrounding pipe and the matching pipe.

5. The engine test rig noise reduction apparatus of claim 4, wherein the locking feature is a bolt.

6. The engine test rig noise reduction apparatus of claim 1, wherein an end of the surround tube is angled, the angled set of angles being between 5 ° and 90 °.

7. The engine test rig noise reduction apparatus of claim 6, wherein the corners of the angled structure are rounded when the angle of the angled structure is 90 °.

8. The engine test rig noise reduction apparatus of claim 6, wherein an end of the enclosure tube opposite the angled structure is provided with a closure plate that surrounds a perimeter wall of the enclosure tube to close an end of the enclosure tube opposite the mating tube.

9. The engine test rig noise reduction apparatus of claim 1, wherein the bottom of the enclosure tube is rotatably mounted with a plurality of casters.

10. The engine test stand noise reduction apparatus of claim 1, wherein the peripheral walls of the surrounding tube and the mating tube are each provided with a pull handle.

Technical Field

The invention relates to the technical field of engine test beds, in particular to a noise reduction device for an engine test bed.

Background

In the engine noise test, it is necessary to perform sound insulation treatment on the exhaust pipe of the engine. Traditional engine pedestal noise test's syllable-dividing mode adopts lead sheath or glass fiber material to wrap up exhaust pipe part more, has following problem: due to the structural and spatial limitations of a laboratory, the exhaust pipeline is required to be wrapped again according to the pipeline trend when the engine is replaced every time; due to structural limitation of the engine, the utilization rate of the wrapped exhaust pipeline is low; due to the limitation of test standards, the exhaust pipeline is repeatedly wrapped during repeated operation, so that the working strength of test workers is high and the physical health is not facilitated; the first test can produce smog because of the parcel reason, has serious potential safety hazard.

Disclosure of Invention

The invention mainly aims to provide a noise reduction device for an engine test bed, and aims to solve the problem.

In order to achieve the purpose, the invention provides an engine test bed noise reduction device which comprises a mounting structure, wherein the mounting structure covers an engine noise reduction pipeline and is provided with an arc-surface-shaped working wall surface, the working wall surface is used for surrounding the engine noise reduction pipeline to form a working cavity, and the working cavity is used for paving a noise elimination sound insulation material and a flame-retardant heat insulation material.

Optionally, the mounting structure includes a surrounding pipe and a matching pipe, the surrounding pipe is movably connected with one end of the matching pipe to adjust the area of the working wall surface or the volume of the working cavity.

Optionally, the inner wall or the outer wall of the surrounding pipe is provided with a sliding groove extending along the length direction of the surrounding pipe, and the matching pipe is provided with a sliding block in sliding fit with the sliding groove so as to be slidably mounted in the sliding groove.

Optionally, the surrounding pipe is provided with a locking through groove extending along the length direction of the surrounding pipe, the matching pipe is provided with a matching through groove corresponding to the locking through groove, and the device for reducing noise of the engine test bed further comprises a locking part, wherein the locking part is used for matching with the locking through groove and the matching through groove so as to fix the relative position of the surrounding pipe and the matching pipe.

Optionally, the locking member is a bolt.

Optionally, one end of the surrounding pipe is in an included angle structure, and an included angle of the included angle structure is set to be 5-90 degrees.

Optionally, when the included angle of the included angle structure is 90 degrees, the corner of the included angle structure is arranged in a rounded manner.

Optionally, a closing plate is arranged at one end, opposite to the included angle structure, of the surrounding pipe, and the closing plate surrounds the circumferential wall of the surrounding pipe to close the end, opposite to the matching pipe, of the surrounding pipe.

Optionally, a plurality of casters are rotatably mounted to the bottom of the enclosure tube.

Optionally, the peripheral walls of the surrounding tube and the mating tube are both provided with a pull handle.

According to the technical scheme, the working cavity is formed by the mounting structure and the engine noise reduction pipeline and is used for laying the noise elimination and sound insulation material and the flame-retardant heat insulation material, the noise reduction and sound insulation effects on the engine noise reduction pipeline are improved, the damage of smoke to the health of workers and the pollution of smoke to air are reduced, the repeated wrapping of the engine noise reduction pipeline is avoided, the repeated operation of the workers is further reduced, the harm to the health of the workers due to the wrapping operation of an exhaust pipeline is avoided, and the potential safety hazard is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a noise reduction device for an engine test bed provided by the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Surrounding pipe	2	Mating tube
11	Locking through groove	21	Matching through groove
				12	Caster wheel	3	Handle (CN)

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In the engine noise test, it is necessary to perform sound insulation treatment on the exhaust pipe of the engine. Traditional engine pedestal noise test's syllable-dividing mode adopts lead sheath or glass fiber material to wrap up exhaust pipe part more, has following problem: due to the structural and spatial limitations of a laboratory, the exhaust pipeline is required to be wrapped again according to the pipeline trend when the engine is replaced every time; due to structural limitation of the engine, the utilization rate of the wrapped exhaust pipeline is low; due to the limitation of test standards, the exhaust pipeline is repeatedly wrapped during repeated operation, so that the working strength of test workers is high and the physical health is not facilitated; the first test can produce smog because of the parcel reason, has serious potential safety hazard.

Referring to fig. 1, the noise reduction device for the engine test bed according to an embodiment of the invention includes a mounting structure, the mounting structure covers an engine noise reduction pipeline and has an arc-surface-shaped working wall surface, the working wall surface is used for surrounding the engine noise reduction pipeline to form a working cavity, and the working cavity is used for laying a noise elimination sound insulation material and a flame retardant heat insulation material.

In the engine test bed noise reduction device provided by the embodiment of the invention, the mounting structure and the engine noise reduction pipeline form a working cavity, the working cavity is used for paving the noise reduction and insulation material and the flame-retardant heat insulation material, so that the noise reduction and insulation effects on the engine noise reduction pipeline are improved, and smoke is generated when the noise reduction and insulation material and the flame-retardant heat insulation material are wrapped for the first time for testing, so that the mounting structure reduces the damage of smoke to the health of workers and the pollution to air. Further, this mounting structure can be for the pipeline structure with the pipeline looks adaptation of making an uproar falls in the engine, with noise elimination sound insulation material and fire-retardant heat insulation material fixed mounting in this mounting structure's outer wall face, can avoid making an uproar falls in the engine pipeline and carry out repeated parcel, and then reduce staff's repetitive operation, avoid exhaust pipe parcel operation to give the harm that the health brought, reduced the potential safety hazard.

Further, mounting structure surrounds pipe 1 and cooperation pipe 2, surrounds pipe 1 and is swing joint setting with the one end of cooperation pipe 2 to the area of adjustment work wall or the volume of working chamber, through the cooperation of surrounding pipe 1 with cooperation pipe 2, makes this mounting structure be applicable to the experiment of different engines, satisfies the demand of arranging of different model exhaust sides, improves the commonality and the security of this engine test bench noise reduction device. Further, the surrounding pipe 1 and the mating pipe 2 are both made of steel material.

Further, the periphery wall of surrounding pipe 1 and cooperation pipe 2 all is equipped with handle 3, makes things convenient for the staff to adjust the relative position of surrounding pipe 1 and cooperation pipe 2.

Further, the inner wall or the outer wall of enclosing pipe 1 are equipped with the spout that extends along self length direction, and cooperation pipe 2 is equipped with the slider with spout sliding fit to slidable mounting is in the spout, and the staff of being convenient for adjusts the relative position of enclosing pipe 1 and cooperation pipe 2.

Further, surround pipe 1 and run through the groove 11 that is equipped with the locking that extends along self length direction, cooperation pipe 2 corresponds that the groove 11 that the locking runs through and is equipped with the cooperation and leads to groove 21, and the device of making an uproar still includes the locking part in the moving machine test bench, and the locking part is used for leading to the groove 11 and the cooperation of cooperation through the groove 21 with the locking and cooperatees to the fixed relative position of surrounding pipe 1 and cooperation pipe 2.

Further, the locking part is a bolt, and is convenient to mount and dismount.

Furthermore, one end of the surrounding pipe 1 is of an included angle structure, and the included angle of the included angle structure is set to be 5-90 degrees. The included angle structure can be arranged according to the trend of an exhaust pipeline of a specific engine, and the included angle of the included angle structure can form a fixed structure in the production process of the included angle structure.

Furthermore, when the included angle of the included angle structure is 90 degrees, the corners of the included angle structure are arranged in a fillet manner, so that the adaptability of the included angle structure to the outer wall surface of the engine exhaust pipeline is improved, in the embodiment, the surrounding pipe 1 is arranged in a semi-arc manner, and through the matching of the surrounding pipe 1 and the matching pipe 2, the noise reduction device for the engine test bench can adjust the height of the mounting structure, so that the adaptability of the noise reduction device for the engine test bench to the outer wall surface of the engine exhaust pipeline is further improved.

Furthermore, the end of the surrounding pipe 1 opposite to the included angle structure is provided with a closing plate, the closing plate and the surrounding wall of the surrounding pipe 1 surround to close the end of the surrounding pipe 1 opposite to the matching pipe 2, and the effects of noise elimination, sound insulation, flame retardance and temperature insulation are improved.

Further, a plurality of casters 12 are rotatably mounted at the bottom of the surrounding pipe 1, so that workers can conveniently move the noise reduction device of the engine test bed.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.