CN217129652U - Front cover plate assembly of diesel engine - Google Patents
Front cover plate assembly of diesel engine Download PDFInfo
- Publication number
- CN217129652U CN217129652U CN202122146996.5U CN202122146996U CN217129652U CN 217129652 U CN217129652 U CN 217129652U CN 202122146996 U CN202122146996 U CN 202122146996U CN 217129652 U CN217129652 U CN 217129652U
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- cover plate
- front cover
- plate body
- diesel engine
- sealing
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Abstract
The utility model discloses a front cover plate assembly of a diesel engine, which comprises a front cover plate body, a sealing gasket, a metal ring insert and a combined bolt, wherein the periphery of the front cover plate body is provided with a sealing groove, the shape and the direction of the sealing groove are consistent with the appearance of a sealing surface of a cylinder body of the diesel engine, and the sealing gasket is pressed in the sealing groove; an upper metal insert hole and a lower metal insert hole are formed in the middle of the front cover plate body, and metal ring inserts are embedded in the metal insert holes; holes are distributed on the periphery of the front cover plate body, and combination bolts are pressed into the holes in an interference manner; the left side and the right side of the lower part of the front cover plate body are respectively provided with a positioning pin hole. The utility model discloses the front shroud has effectively reduced the radiation noise, has improved engine NVH performance, and the front shroud assembly has integrateed sealed pad and fixing bolt in addition, has improved production line assembly efficiency by a wide margin.
Description
Technical Field
The utility model relates to a diesel engine front shroud assembly especially relates to a front shroud assembly of sealed pad and combination bolt and becket inserts in area.
Background
With the increasingly prominent problems of energy safety and resource shortage, the light weight of parts is more and more emphasized by design developers, wherein the balance between performance and material use is the core consideration index of structure optimization. The front cover plate of the diesel engine is positioned at the front end of the engine, is directly contacted with a cylinder body, is easy to become an excitation source, and is one of main sources of engine noise. At present, a front cover plate of a diesel engine is made of a large-plate aluminum material (as shown in fig. 4 and 5), so that an effective vibration damping design cannot be provided in consideration of weight reduction or process limitation, and surface acoustic vibration radiation is high.
Disclosure of Invention
The utility model aims to solve the technical problem that the quality that exists to current diesel engine front shroud is heavier, and the relatively poor problem of NVH performance provides a new diesel engine front shroud scheme, further falls heavily and optimizes the NVH performance.
The utility model aims to solve the technical problem that there is the relatively poor problem of NVH performance to current diesel engine front shroud, provide a new diesel engine front shroud scheme, adopt the better plastics material of damping effect, calculate the dynamic characteristic and the vibration response characteristic of front shroud through the emulation simultaneously, optimized the front shroud structure, adopt vertically and horizontal muscle in a large number, reduce the surface acoustic vibration radiation of large flat board, further optimize the NVH performance.
In order to solve the technical problem, the utility model provides a front cover plate assembly of a diesel engine, which comprises a front cover plate body, a sealing gasket, a metal ring insert and a combination bolt, wherein the periphery of the front cover plate body is provided with a sealing groove, the shape and the direction of the sealing groove are consistent with the appearance of a sealing surface of a cylinder body of the diesel engine, and the sealing gasket is pressed in the sealing groove; an upper metal insert hole and a lower metal insert hole are formed in the middle of the front cover plate body, and metal ring inserts are embedded in the metal insert holes; holes are distributed on the periphery of the front cover plate body, and combination bolts are pressed into the holes in an interference manner; the left side and the right side of the lower part of the front cover plate body are respectively provided with a positioning pin hole.
The inner surface and the outer surface of the front cover plate body are provided with transverse and longitudinal equal-height reinforcing ribs, and the reinforcing ribs extend to the outermost side of the front cover plate body.
The sealing gasket both sides are equipped with spacing boss and prevent to drop, and sealed face is equipped with two seal lips and is used for strengthening sealed.
The combined bolt consists of a hexagon head bolt and a shaft sleeve, and the hexagon head bolt is combined with the shaft sleeve through a rod boss.
The front cover plate assembly is arranged on the front end face of the diesel engine cylinder body.
Has the advantages that: the utility model discloses the front shroud has effectively reduced the radiation noise, has improved engine NVH performance, and the front shroud assembly has integrateed sealed pad and fixing bolt in addition, has improved production line assembly efficiency by a wide margin.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic cross-sectional view of the gasket of the present invention;
fig. 3 is a main/side view of the metal ring insert of the present invention;
FIG. 4 is a front view of a prior art pre-operative cover plate;
fig. 5 is a rear view of a prior art front cover plate.
In the figure: 1. a front cover plate body; 2. a gasket; 21. a limiting boss; 22. a sealing lip; 3. a metal ring insert; 4. assembling bolts; 41. a shaft sleeve; 42. a hexagon head bolt; 5. a positioning pin hole.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-3, the utility model provides a diesel engine front cover plate assembly, which comprises a front cover plate body 1, a sealing gasket 2, a metal ring insert 3 and a combination bolt 4, wherein the inner surface and the outer surface of the front cover plate body 1 are provided with transverse and longitudinal equal-height reinforcing ribs, the periphery of the front cover plate body is provided with a sealing groove, the shape and the trend of the reinforcing ribs are consistent with the shape of a sealing surface of a diesel engine cylinder body, and the sealing gasket 2 is pressed in the sealing groove and is used for sealing the front end surface of the diesel engine cylinder body; an upper metal insert hole and a lower metal insert hole are formed in the middle of the front cover plate body 1, and a metal ring insert 3 is embedded in each metal insert hole and used for improving the size precision of the inner hole and ensuring the matching sealing of a fan bracket shaft and a crankshaft front oil seal; holes are distributed on the periphery of the front cover plate body 1, and combination bolts 4 are pressed into the holes in an interference manner; the left side and the right side of the lower part of the front cover plate body 1 are respectively provided with a positioning pin hole 5 for determining the relative position of the middle metal insert hole.
The front cover plate comprises a front cover plate body 1, and is characterized in that reinforcing ribs which are arranged reasonably and have the same height in the transverse direction and the longitudinal direction are arranged on the inner surface and the outer surface of the front cover plate body 1, and the reinforcing ribs extend to the outermost side of the front cover plate body 1.
The two sides of the sealing gasket 2 are provided with limiting bosses 21, so that the sealing gasket is effectively prevented from falling off in the transportation and assembly processes; the sealing surface is provided with two sealing lips 22 for enhancing the sealing.
The assembling bolt 4 is composed of a hexagon head bolt 42 and a shaft sleeve 41, the hexagon head bolt 42 is combined with the shaft sleeve 41 through a rod boss, the shaft sleeve 41 is pressed into the plastic front cover plate body 1 in an interference mode, the bearing pressure of the bolt hole is improved, and meanwhile the bolt is prevented from falling off during transportation and assembly.
The front cover plate assembly is arranged on the front end face of the diesel engine cylinder body and used for sealing the front end face of the diesel engine cylinder body, the crankshaft front oil seal and the fan bracket shaft and improving the assembly efficiency of a production line.
The utility model discloses compare in traditional aluminium front shroud, effectively reduced the radiation noise, improved engine NVH performance. In addition, the front cover plate assembly integrates a sealing gasket and a fixing bolt, and the assembly efficiency of a production line is greatly improved.
The above embodiments of the present invention are merely examples, not the only ones, and all changes within the scope of the present invention or the same range of the present invention are all surrounded by the present invention.
Claims (5)
1. A diesel engine front shroud assembly which characterized in that: the sealing structure comprises a front cover plate body (1), a sealing gasket (2), a metal ring insert (3) and a combined bolt (4), wherein a sealing groove is formed in the periphery of the front cover plate body (1), the shape and the direction of the sealing groove are consistent with the shape of a sealing surface of a diesel engine cylinder body, and the sealing gasket (2) is pressed in the sealing groove; an upper metal insert hole and a lower metal insert hole are formed in the middle of the front cover plate body (1), and a metal ring insert (3) is embedded in each metal insert hole; holes are distributed on the periphery of the front cover plate body (1), and combination bolts (4) are pressed into the holes in an interference manner; the left side and the right side of the lower part of the front cover plate body (1) are respectively provided with a positioning pin hole (5).
2. The diesel engine front cover plate assembly of claim 1, wherein: the front cover plate is characterized in that transverse and longitudinal equal-height reinforcing ribs are arranged on the inner surface and the outer surface of the front cover plate body (1), and the reinforcing ribs extend to the outermost side of the front cover plate body (1).
3. The diesel engine front cover plate assembly of claim 1, wherein: the two sides of the sealing gasket (2) are provided with limiting bosses (21) to prevent falling off, and the sealing surface is provided with two sealing lips (22) for strengthening sealing.
4. The diesel engine front cover plate assembly of claim 1, wherein: the combined bolt (4) is composed of a hexagon head bolt (42) and a shaft sleeve (41), and the hexagon head bolt (42) is combined with the shaft sleeve (41) through a rod boss.
5. The diesel engine front cover plate assembly according to any one of claims 1 to 4, wherein: the front cover plate assembly is arranged on the front end face of the diesel engine cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122146996.5U CN217129652U (en) | 2021-09-07 | 2021-09-07 | Front cover plate assembly of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122146996.5U CN217129652U (en) | 2021-09-07 | 2021-09-07 | Front cover plate assembly of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217129652U true CN217129652U (en) | 2022-08-05 |
Family
ID=82614776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122146996.5U Active CN217129652U (en) | 2021-09-07 | 2021-09-07 | Front cover plate assembly of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217129652U (en) |
-
2021
- 2021-09-07 CN CN202122146996.5U patent/CN217129652U/en active Active
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