CN213684320U

CN213684320U - Diesel engine with low noise

Info

Publication number: CN213684320U
Application number: CN202022704420.1U
Authority: CN
Inventors: 陈艳梅
Original assignee: Sichuan Qianjun Electromechanical Equipment Co ltd
Current assignee: Sichuan Qianjun Electromechanical Equipment Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-13
Anticipated expiration: 2030-11-20

Abstract

The utility model belongs to the field of diesel engines, in particular to a diesel engine with low noise, which comprises an engine body and a fixed seat, wherein the engine body is fixedly connected in the fixed seat, the bottom wall of the fixed seat is provided with four heat dissipation holes, and dust screens are fixedly connected in the four heat dissipation holes; the heat dissipation fan that sets up through the installation cover plays the supplementary radiating effect to the organism, there is the setting of the syllable-dividing plywood of damping coating through the spraying, play the preliminary separation effect to the noise that the organism produced, reduce the noise propagation, and the setting on first soundproof cotton layer plays the effect that the noise that will propagate consumes, during later maintenance, screw hole that the gim peg was seted up from the connecting block is twisted out, later with the spacer pull-up make syllable-dividing plywood deviate from in the fixing base, make operating personnel staff's staff can directly get into the fixing base and maintain the operation to the organism, thereby when having guaranteed noise reduction, also reduce the inconvenience that operating personnel caused because of the space is limited.

Description

Diesel engine with low noise

Technical Field

The utility model belongs to the diesel engine field specifically is a diesel engine that the noise is little.

Background

The diesel engine is an engine which burns diesel to obtain energy release, and has the advantages of large torque and good economic performance. The working process of the diesel engine is in the same place as that of the gasoline engine, each working cycle also undergoes four strokes of air intake, compression, work application and exhaust, the existing diesel engine has high noise during working, the hearing of surrounding operators is easily affected, and the physical and psychological health of the operators can be affected when the operators are in the working environment with excessive noise for a long time.

At present, through the mode that the sound insulation shell is arranged outside the diesel engine and is integrally formed with the engine base, although a good sound insulation effect can be achieved, when the engine is subsequently maintained, due to the fact that the shell is limited by surrounding the whole space around the engine body, an operator is not convenient to operate, and therefore practicability is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a diesel engine that the noise is little to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a diesel engine that noise is little, includes organism and fixing base, organism fixed connection in the fixing base, four louvres, four have been seted up to the diapire of fixing base equal fixedly connected with dust screen in the louvre, the top of fixing base is equipped with the installation cover, two heat dissipation fans that are the symmetric distribution of the inner wall fixedly connected with of installation cover, heat dissipation fan and external power source electric connection, the bottom fixedly connected with locating rack of installation cover, two soundproof layer boards that are the symmetric distribution of bottom fixedly connected with of locating rack, two connecting blocks of bottom fixedly connected with of locating rack, the connecting block with the fixing base spiro union is fixed, two first soundproof cotton layers that are the symmetric distribution of inner wall fixedly connected with of fixing base.

As a further aspect of the present invention: the inner side of the positioning frame is provided with a through groove.

As a further aspect of the present invention: the inner wall fixedly connected with second soundproof cotton layer of installation cover.

As a further aspect of the present invention: and through hole damping coatings are sprayed on two sides of the outer wall of the sound insulation laminate.

As a further aspect of the present invention: and positioning bolts are arranged on two side walls of the fixing seat.

As a further aspect of the present invention: the two positioning bolts respectively penetrate through two side walls of the fixing seat and are in sliding connection with the fixing seat.

As a further aspect of the present invention: the connecting block is provided with a threaded hole, and the positioning bolt is fixed with the threaded hole in a threaded manner.

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

the scheme plays a role in auxiliary heat dissipation on the machine body through the heat dissipation fan arranged on the mounting cover, and air can circulate through the through grooves and the heat dissipation holes, the arrangement of the sound insulation laminate coated with the damping coating plays a role in preliminarily blocking noise generated by a machine body and reducing noise transmission, while the arrangement of the first soundproof cotton layer plays a role in consuming the transmitted noise, thereby ensuring heat dissipation and reducing noise, and when maintaining the machine body in later period, screwing the positioning bolt out of the threaded hole formed in the connecting block, then pulling the positioning frame upwards to make the sound insulation laminate plate deviate from the fixed seat, thereby removing the block of the fixed seat, leading the hands of operators to directly enter the fixed seat to maintain the machine body, therefore, the noise reduction effect is ensured, the inconvenience caused by space limitation of operators is reduced, and the practicability is improved.

Drawings

FIG. 1 is a schematic view of a low noise diesel engine;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the construction of a sound barrier laminate and damping coating in a low noise diesel engine;

fig. 4 is a sectional view of a stationary base in a diesel engine with low noise.

In the figure: 1. a body; 2. a fixed seat; 21. positioning bolts; 22. heat dissipation holes; 23. a dust screen; 3. mounting a cover; 31. a heat dissipation fan; 32. a second soundproof cotton layer; 4. a positioning frame; 401. a through groove; 41. a sound insulation laminate; 411. a damping coating; 42. connecting blocks; 421. a threaded hole; 5. a first soundproof cotton layer.

Detailed Description

Please refer to fig. 1-4, in an embodiment of the present invention, a diesel engine with low noise includes a machine body 1 and a fixing base 2, the machine body 1 is fixedly connected in the fixing base 2, the bottom wall of the fixing base 2 is provided with four heat dissipation holes 22, a dust screen 23 is fixedly connected in each of the four heat dissipation holes 22, the top of the fixing base 2 is provided with an installation cover 3, the inner wall of the installation cover 3 is fixedly connected with two heat dissipation fans 31 which are symmetrically distributed, the heat dissipation fans 31 are electrically connected with an external power source, the bottom of the installation cover 3 is fixedly connected with a positioning frame 4, the bottom of the positioning frame 4 is fixedly connected with two sound insulation laminates 41 which are symmetrically distributed, the bottom of the positioning frame 4 is fixedly connected with two connecting blocks 42, the connecting blocks 42 are fixed with the fixing base 2 by screw connection, and the inner; when the machine body 1 works, the heat dissipation fan 31 arranged through the mounting cover 3 plays a role in auxiliary heat dissipation of the machine body 1, air generated when the heat dissipation fan 31 dissipates heat is enabled to circulate with the outside through the through grooves 401 and the heat dissipation holes 22, the dust screen 23 is arranged to play a role in reducing dust entering the fixing seat 2, the primary separation effect of noise generated by the machine body 1 is achieved through the arrangement of the sound insulation laminate 41 coated with the damping coating 411, noise transmission is reduced, the arrangement of the first sound insulation cotton layer 5 plays a role in consuming the transmitted noise, so that the noise can be reduced while heat dissipation is ensured, when the machine body 1 is maintained in the later period, the positioning bolt 21 is screwed out from the threaded hole formed in the connecting block 42, then the positioning frame 4 is pulled upwards to enable the sound insulation laminate 41 to be separated from the fixing seat 2, and accordingly blocking of the fixing seat 2 is removed, make operating personnel staff can directly get into fixing base 2 and maintain the operation to organism 1, this scheme compares in the shell of making an uproar that falls of integral type, when having guaranteed the noise reduction effect, also reduces the inconvenience that operating personnel caused because of the space is limited, has improved the practicality.

In fig. 1: a through groove 401 is arranged on the inner side of the positioning frame 4; the arrangement of the through groove 401 enables the heat dissipation fan 31 to directly blow air to the machine body 1 to achieve auxiliary heat dissipation.

In fig. 1: the inner wall of the mounting cover 3 is fixedly connected with a second soundproof cotton layer 32; the second soundproof cotton layer 32 is arranged to cooperate with the first soundproof cotton layer 5 to further absorb the noise of the body 1.

In fig. 3: damping coatings 411 are sprayed on both sides of the outer wall of the sound insulation laminate 41; the damping coating is prepared by adding a proper amount of filler and auxiliary materials into polymer resin, is a special coating which can be coated on the surfaces of various metal plate-shaped structures and has the effects of vibration reduction and noise reduction, and plays a role of primary blocking when noise is generated on the machine body 1 through the sound insulation laminated plate 41, thereby reducing the transmissibility of the noise.

In fig. 2: two side walls of the fixed seat 2 are respectively provided with a positioning bolt 21, the two positioning bolts 21 respectively penetrate through the two side walls of the fixed seat 2 and are in sliding connection with the fixed seat 2, the connecting block 42 is provided with a threaded hole 421, and the positioning bolts 21 are in threaded connection and fixed with the threaded hole 421; fixing base 2 offers the through-hole that is used for syllable-dividing plywood 41 to penetrate, when installing locating rack 4, places locating rack 4 in fixing base 2's top, and the inside that plywood 41 inserted fixing base 2 this moment gives sound insulation is located organism 1's both sides, later passes fixing base 2 through the bolt and twists to connect and realize the fixed of locating rack 4 among the screw hole 421 that connecting block 42 was seted up for locating rack 4 carries out the shutoff with fixing base 2's top.

The utility model discloses a theory of operation is: when in use, the positioning frame 4 is firstly installed, the positioning frame 4 is placed at the top of the fixed seat 2, the sound insulation laminates 41 are inserted into the fixed seat 2 and positioned at two sides of the machine body 1, then the sound insulation laminates pass through the fixed seat 2 and are screwed in the threaded holes 421 formed in the connecting block 42 to fix the positioning frame 4, so that the positioning frame 4 seals the top of the fixed seat 2, then the heat dissipation fan 31 arranged through the mounting cover 3 plays a role in auxiliary heat dissipation of the machine body 1 when the machine body 1 is in use, air generated when the heat dissipation fan 31 dissipates heat is circulated with the outside through the through grooves 401 and the heat dissipation holes 22, the dust screen 23 is arranged to reduce dust entering the fixed seat 2, the primary blocking function of noise generated by the machine body 1 is achieved through the arrangement of the sound insulation laminates 41 sprayed with the damping coating 411, the noise transmission is reduced, and the arrangement of the first sound insulation cotton layer 5 plays a role in consuming the transmitted noise, thereby make this scheme also noise abatement when guaranteeing the radiating, and when maintaining organism 1 in the later stage, screw hole 421 that set up from connecting block 42 with the gim peg 21 are twisted out, later make syllable-dividing plywood 41 deviate from in fixing base 2 with locating rack 4 pull-up, thereby remove the block to fixing base 2, make operating personnel staff's staff directly get into fixing base 2 and maintain the operation to organism 1, this scheme compares in the shell of making an uproar of falling of integral type, when having guaranteed the noise reduction effect, also reduce the inconvenience that operating personnel caused because of the space is limited, and the practicality is improved.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The diesel engine with low noise comprises an engine body (1) and a fixed seat (2), and is characterized in that the engine body (1) is fixedly connected in the fixed seat (2), four heat dissipation holes (22) are formed in the bottom wall of the fixed seat (2), a dust screen (23) is fixedly connected in the four heat dissipation holes (22), an installation cover (3) is arranged at the top of the fixed seat (2), two heat dissipation fans (31) which are symmetrically distributed are fixedly connected to the inner wall of the installation cover (3), the heat dissipation fans (31) are electrically connected with an external power supply, a positioning frame (4) is fixedly connected to the bottom of the installation cover (3), two sound insulation laminated plates (41) which are symmetrically distributed are fixedly connected to the bottom of the positioning frame (4), two connecting blocks (42) are fixedly connected to the bottom of the positioning frame (4), and the connecting blocks (42) are fixed to the fixed seat (2) in a threaded manner, the inner wall fixedly connected with of fixing base (2) is two first soundproof cotton layers (5) that are the symmetric distribution.

2. A diesel engine with low noise according to claim 1, characterized in that the positioning frame (4) is provided with a through slot (401) on the inner side.

3. A diesel engine with low noise according to claim 1, characterized in that a second soundproof cotton layer (32) is fixedly attached to the inner wall of the mounting cover (3).

4. A diesel engine with low noise according to claim 1, characterized in that the sound insulation laminate (41) is coated with a damping coating (411) on both sides of the outer wall.

5. A diesel engine with low noise according to claim 1, characterized in that the two side walls of the fixed base (2) are provided with positioning bolts (21).

6. A diesel engine with low noise according to claim 5, characterized in that the two positioning bolts (21) respectively penetrate through two side walls of the fixed seat (2) and are connected with the fixed seat (2) in a sliding manner.

7. The diesel engine with low noise as set forth in claim 6, wherein the connecting block (42) is provided with a threaded hole (421), and the positioning bolt (21) is fixed with the threaded hole (421) in a threaded manner.