CN215862367U - Double-shell type flywheel shell - Google Patents
Double-shell type flywheel shell Download PDFInfo
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- CN215862367U CN215862367U CN202121733473.4U CN202121733473U CN215862367U CN 215862367 U CN215862367 U CN 215862367U CN 202121733473 U CN202121733473 U CN 202121733473U CN 215862367 U CN215862367 U CN 215862367U
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Abstract
The utility model discloses a double-shell type flywheel shell which comprises a gearbox shell, a rear shell and a front shell; the gearbox shell is distributed on the rear side of the rear shell; the front shell is detachably connected with the rear shell through mounting bolts. The left upper side and the right upper side of the rear shell are respectively and correspondingly provided with a left PTO power take-off port and a right PTO power take-off port; the left upper side and the right upper side of the front shell are respectively provided with a hydraulic pump gear oil hole lug corresponding to the left PTO power take-off port and the right PTO power take-off port; the rear shell is provided with a stress balance slow release circular truncated cone corresponding to the gearbox shell. The utility model has the advantages of good reliability, convenient installation and the like.
Description
Technical Field
The utility model relates to the technical field of high-power engines, in particular to a double-shell type flywheel shell.
Background
The flywheel shell is one of main accessories of an engine, is arranged between the engine and a gearbox, is externally connected with a crank case, a starter and an oil pan, is internally provided with a flywheel assembly, and plays the roles of connecting a machine body, protecting and carrying. It is desirable to maintain good stability and sealing during engine operation. Noise, vibration and acoustic vibration roughness are the main technical index that the flywheel shell design process needs main consideration, also are simultaneously a comprehensive index of weighing car manufacturing quality, and at present mainly adjust flywheel shell rigidity and reliability through modes such as adjustment arrangement rib, optimization structure, adjustment wall thickness, adjustment quality and suspended arrangement, realize reducing vibration, the noise reduction can improve and take the travelling comfort, promote product competitiveness. The requirement of the high-power engine for the flywheel housing is more rigorous, and the mass, vibration and noise of relevant parts installed on the flywheel housing are higher, so that new requirements on the reliability of the flywheel housing such as efficient assembly, vibration resistance, rigidity and the like are provided, and the current lightweight design requirement is also met.
Disclosure of Invention
Aiming at the technical problems, the utility model provides the double-shell flywheel shell with good reliability for the high-power engine.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a double-shell flywheel casing comprises a gearbox casing, a rear casing and a front casing; the gearbox shell is distributed on the rear side of the rear shell; the front shell is detachably connected with the rear shell through mounting bolts.
Furthermore, the left upper side and the right upper side of the rear shell are respectively and correspondingly provided with a left PTO power take-off port and a right PTO power take-off port; the left upper side and the right upper side of the front shell are respectively provided with a hydraulic pump gear oil hole lug corresponding to the left PTO power take-off port and the right PTO power take-off port; the rear shell is provided with a stress balance slow release circular truncated cone corresponding to the gearbox shell.
Furthermore, a left idle gear mounting seat and a right idle gear mounting seat are also arranged in the front shell; the front end of the front shell is provided with a left idle gear oil hole lug corresponding to the left idle gear mounting seat.
Furthermore, the right idle gear mounting seat and the hydraulic pump gear oil hole lug adopt a 'rice' -shaped reinforcing rib strip group; a plurality of flywheel shell mounting holes are longitudinally formed in the middle of the inner edge of the front shell, and the flywheel shells are mounted and connected into a line through reinforcing ribs.
Furthermore, a crankshaft head central hole is formed in the middle of the gearbox shell; and a plurality of V-shaped reinforcing rib groups are arranged along the periphery of the central hole of the crankshaft head, and peripheral wall reinforcing ribs are arranged along the outer ends of the V-shaped reinforcing rib groups.
Furthermore, a left suspension tower and a right suspension tower are correspondingly arranged in the middle positions of the left side and the right side of the gearbox shell; and starter holes are formed in the right suspension tower and distributed outside the rear shell.
Furthermore, the gearbox shell is distributed on the rear middle lower side of the rear shell, and the right lower side part of the gearbox shell is in a suspended state.
Furthermore, a crankshaft head through opening is correspondingly formed in the middle lower portion of the front shell, a camshaft sealing groove is further formed in the front end of the front shell, and an oil return channel is further formed in the lower portion of the camshaft sealing groove.
Furthermore, an engine oil adding port is formed in the middle of the top of the rear shell.
Furthermore, a plurality of anti-cracking ribs are further arranged at the left PTO power take-off port and the right PTO power take-off port along the radial direction; and a cross-shaped reinforcing rib is arranged between the left PTO power take-off port and the right PTO power take-off port to connect with the stress balance slow-release circular truncated cone.
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the utility model, the flywheel shell is divided into the transmission case shell, the rear shell and the front shell, the transmission case is distributed in the transmission case shell and then combined through the rear shell, the idler gear and the like are assembled on the front shell, and then the rear shell and the front shell are fastened and connected through the bolts. Compared with the traditional design, the phenomena of cracking and the like caused by overlarge local stress can not occur after long-term use.
(2) Through combining and adopting "rice" shape strengthening rib group and "V" shape strengthening rib group and rationally laying out PTO power take-off mouth, camshaft, left suspension tower and right suspension tower etc. can effectively reduce the vibration and the noise/the sound of whole bell housing and shake, and effectively reduce vibration, can show the relevant local stress burden that reduces the casing after using, and then improve the reliability.
Drawings
FIG. 1 is a front side elevational view of the rear housing of the present invention;
FIG. 2 is a rear side elevational view of the front housing of the present invention;
FIG. 3 is an exploded view of the front and rear housings of the present invention from a rear left position;
FIG. 4 is an exploded structural schematic view of the front and rear housings of the present invention from a right front side orientation;
FIG. 5 is a schematic view of the front and rear housings of the present invention in combination;
FIG. 6a is a CAE analysis of the backward orientation of the present invention;
FIG. 6b is a CAE analysis of the backward orientation of the present invention;
FIG. 6c is a CAE analysis diagram to the right of the forward bearing of the present invention;
FIG. 6d is a CAE analysis diagram to the left of the forward bearing of the present invention;
FIG. 6e is a CAE analysis diagram to the left of the forward bearing of the present invention;
FIG. 7 is a cloud view of the displacement distribution of the present invention (up-loading condition);
FIG. 8 is a cloud of displacement profiles (right load condition) of the present invention.
Detailed Description
As shown in fig. 1 to 5, a double-shell flywheel housing comprises a transmission housing 5, a rear housing 3 and a front housing 1; the gearbox housing 5 is distributed on the rear side of the rear housing 3; the front shell 1 is fastened to a bolt hole 6 through a mounting bolt 2 and is detachably connected with the rear shell 3, and the rear shell is provided with a stress balance slow release circular truncated cone 5-3 corresponding to the gearbox shell; the utility model adopts the structural mode of the rear shell 3 and the front shell 1 creatively, can obviously reduce the phenomena of poor stress distribution, easy cracking and the like of the shell and the front shell of the high-power engine gearbox, obviously weakens the integral vibration generated by the front gear train and the rear gear train, and obviously improves the reliability. The left upper side and the right upper side of the rear shell 3 are respectively and correspondingly provided with a left PTO power take-off port 14 and a right PTO power take-off port 10, and a power take-off port cover plate 23; the left upper side and the right upper side of the front housing are respectively provided with a first hydraulic pump gear oil hole lug 16 and a second hydraulic pump gear oil hole lug 19 corresponding to the left PTO power take-off port 14 and the right PTO power take-off port 10. A left idle gear mounting seat 26 and a right idle gear mounting seat 27 are further arranged in the front shell 1; the front end of the front shell 1 is provided with a left idle gear oil hole lug 17 corresponding to the left idle gear mounting seat 26. The right idle gear mounting seat and the hydraulic pump gear oil hole lug adopt a 'meter' -shaped reinforcing rib group 28. A plurality of flywheel housing mounting holes 24 are further longitudinally formed in the front housing 1 along the middle, and the flywheel housings are connected into a line through reinforcing ribs 25.
The middle part of the gearbox shell 5 is provided with a crankshaft head central hole 7; a plurality of V-shaped reinforcing rib groups 5-1 are arranged along the periphery of the center hole 7 of the crankshaft head, peripheral wall reinforcing ribs 5-2 are arranged along the outer ends of the V-shaped reinforcing rib groups 5-1, and the V-shaped reinforcing rib groups 5-1 and the peripheral wall reinforcing ribs 5-2 are used for reinforcing the shell 5 of the gearbox. The middle positions of the left side and the right side of the gearbox shell 5 are respectively and correspondingly provided with a left suspension tower 4 and a right suspension tower 9; a starter hole 20 is formed in the right suspension tower 9, a suspension lug weight reduction cavity 8 is further formed in one side of the right suspension tower, the starter hole 20 is distributed outside the rear shell 3, namely the gearbox shell 5 is distributed on the rear middle lower side of the rear shell, and the right lower side of the gearbox shell is in a suspended state. With the above configuration, the impact of vibration and stress from the gear train of the transmission case 5 to the front case can be minimized, and the mutual impact of stress between the gear trains of the front and rear cases can be effectively reduced, so that the stress can be fully accumulated to the mounting bolts 2. A crankshaft head through opening 18 is correspondingly formed in the middle lower part of the front shell 1, a camshaft sealing groove 21 is further formed in the front end of the front shell 1, an oil return channel 22 is further formed in the lower part of the camshaft sealing groove 21, and camshafts are distributed in the oil return channel; an oil adding port 12 is further formed in the middle of the top of the rear shell 3, and a first yielding hole 13 and a second yielding hole 11 are further formed in the positions corresponding to the left idle gear mounting seat 26 and the right idle gear mounting seat 27. And a plurality of anti-cracking ribs 15 are further arranged at the left PTO power take-off port and the right PTO power take-off port along the radial direction, and a cross-shaped reinforcing rib 29 is further arranged between the left PTO power take-off port and the right PTO power take-off port to strengthen the connection of the stress balance slow-release round tables 5-3.
In view of the above-mentioned construction of the utility model, to prove its beneficial effects, the applicant has also carried out a CAE analysis on it as shown in fig. 6a to 6e, by carrying out the CAE analysis using the casing material QT450, with the support of the above-mentioned related construction, it was achieved that the maximum stress of the whole casing in the analysis is only 237Mpa, significantly lower than the tensile strength 450Mpa of the material, and as shown in fig. 6b, the maximum stress is only 237Mpa at the critical connection zone/frangible zone above the starter hole 20. Indicating that the design of the present construction has a prominent substantive effect.
Meanwhile, in order to verify the effect of the load working condition, the applicant also simulates/calculates the displacement distribution of relevant key parameters under the load working condition, and by combining with reference to fig. 7-8, the calculation results are as follows:
TABLE 1
As can be seen from table 1, the static strength safety coefficient value and the fatigue strength safety coefficient value of the flywheel housing constructed according to the present invention are both significantly higher than the standard values, and can be as high as 4.17, indicating that the present invention has high endurance rigidity and good reliability under high load.
Claims (10)
1. A double-shell flywheel casing is characterized by comprising a gearbox casing, a rear casing and a front casing; the gearbox shell is distributed on the rear side of the rear shell; the front shell is detachably connected with the rear shell through mounting bolts.
2. The double-shell flywheel casing of claim 1, wherein the left upper side and the right upper side of the rear casing are respectively provided with a left PTO power take-off port and a right PTO power take-off port; the left upper side and the right upper side of the front shell are respectively provided with a hydraulic pump gear oil hole lug corresponding to the left PTO power take-off port and the right PTO power take-off port; the rear shell is provided with a stress balance slow release circular truncated cone corresponding to the gearbox shell.
3. The double-shell flywheel casing of claim 1, wherein a left idler gear mounting seat and a right idler gear mounting seat are further arranged in the front casing; the front end of the front shell is provided with a left idle gear oil hole lug corresponding to the left idle gear mounting seat.
4. The double-casing flywheel casing of claim 3, wherein the right idler gear mounting seat and the hydraulic pump gear oil hole lug adopt a 'rice' shaped reinforcing rib group; a plurality of flywheel shell mounting holes are longitudinally formed in the middle of the inner edge of the front shell, and the flywheel shells are mounted and connected into a line through reinforcing ribs.
5. The double-shell flywheel casing of claim 1, wherein a crankshaft head central hole is formed in the middle of the transmission casing; and a plurality of V-shaped reinforcing rib groups are arranged along the periphery of the central hole of the crankshaft head, and peripheral wall reinforcing ribs are arranged along the outer ends of the V-shaped reinforcing rib groups.
6. The double-shell flywheel casing of claim 1, wherein a left suspension tower and a right suspension tower are respectively arranged at the middle positions of the left side and the right side of the transmission casing; and starter holes are formed in the right suspension tower and distributed outside the rear shell.
7. A double-shelled flywheel mass as claimed in claim 1 wherein the transmission housing is distributed at the lower rear-middle side of the rear housing, and the lower right-side portion of the transmission housing is suspended.
8. The double-shell flywheel casing of claim 1, wherein a crankshaft head passage is correspondingly formed in the middle lower portion of the front casing, a camshaft sealing groove is further formed in the front end of the front casing, and an oil return channel is further formed in the lower portion of the camshaft sealing groove.
9. The double-shell flywheel casing of claim 1, wherein an engine oil filling port is further formed in the middle of the top of the rear casing.
10. The double-casing flywheel casing of claim 2, wherein the left PTO power take-off and the right PTO power take-off are further provided with a plurality of anti-spalling ribs along the radial direction; and a cross-shaped reinforcing rib is arranged between the left PTO power take-off port and the right PTO power take-off port to connect with the stress balance slow-release circular truncated cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121733473.4U CN215862367U (en) | 2021-07-28 | 2021-07-28 | Double-shell type flywheel shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121733473.4U CN215862367U (en) | 2021-07-28 | 2021-07-28 | Double-shell type flywheel shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215862367U true CN215862367U (en) | 2022-02-18 |
Family
ID=80332324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121733473.4U Active CN215862367U (en) | 2021-07-28 | 2021-07-28 | Double-shell type flywheel shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215862367U (en) |
-
2021
- 2021-07-28 CN CN202121733473.4U patent/CN215862367U/en active Active
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