CN110173322A - The connection structure of tractor oil bottom case - Google Patents
The connection structure of tractor oil bottom case Download PDFInfo
- Publication number
- CN110173322A CN110173322A CN201910592905.5A CN201910592905A CN110173322A CN 110173322 A CN110173322 A CN 110173322A CN 201910592905 A CN201910592905 A CN 201910592905A CN 110173322 A CN110173322 A CN 110173322A
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- China
- Prior art keywords
- support platform
- connection structure
- oil sump
- bolt
- mounting hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
- F01M2011/0008—Oilsumps with means for reducing vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/0004—Oilsumps
- F01M2011/0054—Fastening to the cylinder block
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agricultural Machines (AREA)
Abstract
The invention discloses a kind of connection structure of tractor oil bottom case, the upper plane of oil sump and the lower plane of cylinder block are fitted and connected, and connection structure includes left support platform, preceding left support, right support platform, front right bracket, rear support platform and after-poppet.Left support platform is set to the left side of oil sump front end；Preceding left support is arranged at left support platform；Right support platform is set to the side again of oil sump front end；Front right bracket is arranged at right support platform；Rear support platform is set to the two sides of oil sump rear end；After-poppet is arranged at rear support platform.The connection structure of tractor oil bottom case of the invention is increased the connection of oil sump and cylinder block by three brackets, improves oil sump local strength, be effectively protected oil sump, and the service life for improving diesel engine is conducive to.
Description
Technical field
The present invention relates to engine accessory power rating mounting technique fields, especially with regard to a kind of connection knot of tractor oil bottom case
Structure.
Background technique
Big-power tractor is turned into industry in Tendency of Agricultural Machinery in China plays key player, and domestic large tractor is adopted more
With inorganic rack and panel construction, the connection of tractor and diesel engine mainly passes through oil sump front end, gear chamber two sides hangers and draws
The preceding bridge of machine is attached, and the other side is attached by the bell housing being fixed on body and oil sump with gearbox.When dragging
Machine drawing in operation by external load when, diesel engine is consistent with farm tractor front axle direction of vibration, due to the effect of inertia, causes
Oil sump junction carries very big tensile stress and moment of flexure, or even can also generate resonance.So traditional oil sump connection structure
It often will appear oil sump oil leak or phenomenon of rupture.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of connection structures of tractor oil bottom case, can well solve existing
The problem of connection type of tractor oil bottom case.
To achieve the above object, the present invention provides a kind of connection structure of tractor oil bottom case, the upper planes of oil sump
Be fitted and connected with the lower plane of cylinder block, connection structure include left support platform, preceding left support, right support platform, front right bracket,
Rear support platform and after-poppet.Left support platform is set to the left side of oil sump front end；Preceding left support setting is flat in left support
At platform；Right support platform is set to the side again of oil sump front end；Front right bracket is arranged at right support platform；Rear support platform is set
It is placed in the two sides of oil sump rear end；After-poppet is arranged at rear support platform.
In a preferred embodiment, preceding left support includes the first link block and is arranged in the first link block top
First vertical plate, the first link block include the first bottom surface and the first front end face, the right side on the right side of the first link block and the first vertical plate
Coplanar formation right side, the first bottom surface, right side and the first front end face are mutually perpendicular to.
In a preferred embodiment, preceding left support further include the first threaded hole, the first mounting hole, the second mounting hole with
And first connecting screw hole.First threaded hole is arranged on the first bottom surface, and the first threaded hole is used to pass through bolt and left support platform
Top surface on the through-hole to match with the first threaded hole that is arranged connect；First mounting hole is arranged on the first vertical plate, the first peace
Dress hole is used to be fixedly mounted on preceding left support by bolt the left side of cylinder block；The setting of second mounting hole is in the first connection
On block, the second mounting hole is used to be fixedly mounted on preceding left support by bolt the left side of cylinder block；First connecting screw hole
It is arranged on the first front end face, the first connecting screw hole by the preceding bridging of bolt and tractor for being connect.
In a preferred embodiment, front right bracket includes the second link block and is arranged in the second link block top
Second vertical plate, the second link block include the second bottom surface and the second front end face, the left side in the left side of the second link block and the second vertical plate
Coplanar formation left side, the second bottom surface, left side and the second front end face are mutually perpendicular to.
In a preferred embodiment, front right bracket further include the second threaded hole, third mounting hole, the 4th mounting hole,
Second connecting screw hole and nameplate boss.Second threaded hole is arranged on the second bottom surface, the second threaded hole be used for through bolt and
The through-hole to match with the second threaded hole being arranged on the top surface of right support platform is connect；Third mounting hole is arranged in the second vertical plate
On, third mounting hole is used to be fixedly mounted on front right bracket by bolt the right side of cylinder block；The setting of 4th mounting hole
On the second link block, the 4th mounting hole is used to be fixedly mounted on front right bracket by bolt the right side of cylinder block；The
Two connecting screw holes are arranged on the second front end face, and the second connecting screw hole by the preceding bridging of bolt and tractor for being connect；Nameplate
Boss is arranged on the right side of the second vertical plate, and the table top and horizontal plane of nameplate boss fold 80 ° to 90 ° of angle, and nameplate is convex
Platform is for installing product nameplate.
In a preferred embodiment, after-poppet includes third bottom surface and the medial surface with third plane perpendicular, and
Three bottom surfaces are used for and the top surface of rear support platform is fitted and connected, and medial surface is used for and the side of cylinder block is fitted and connected.
In a preferred embodiment, after-poppet further includes the 5th mounting hole and third threaded hole.5th mounting hole
It is arranged on medial surface, the 5th mounting hole is used to be fixed on after-poppet by bolt the side of cylinder block；Third threaded hole
It is arranged on third bottom surface, third threaded hole is used to be fixed on after-poppet by bolt the top surface of rear support platform.
In a preferred embodiment, left branch is provided between the lower surface of left support platform and the left side of oil sump
Support part；Right support portion is provided between the lower surface of right support platform and the right side of oil sump.
Compared with prior art, the connection structure of tractor oil bottom case of the invention have the advantages that have with
The advantage that the connection of farm tractor front axle is reasonable, intensity is high, and fully considered post-processing support, gear chamber is independent, no
It is connect with farm tractor front axle, when avoiding effect of inertia, oil sump junction carries excessive tensile stress and moment of flexure, prevents altogether
Vibration, is effectively protected oil sump, is conducive to the service life for improving diesel engine；Increase oil sump and cylinder by three brackets
The connection of body improves oil sump local strength, is effectively protected oil sump, is conducive to the service life for improving diesel engine.
Detailed description of the invention
Fig. 1 is that a visual angle of oil sump according to an embodiment of the present invention, cylinder block, gear chamber and connection structure is vertical
Body scheme of installation.
Fig. 2 is another visual angle of oil sump according to an embodiment of the present invention, cylinder block, gear chamber and connection structure
Three-dimensional scheme of installation.
Fig. 3 is the partial enlarged view of the left support platform of connection structure according to an embodiment of the present invention.
Fig. 4 is the perspective view at a visual angle of the preceding left support of connection structure according to an embodiment of the present invention.
Fig. 5 is the perspective view at another visual angle of the preceding left support of connection structure according to an embodiment of the present invention.
Fig. 6 is the partial enlarged view of the right support platform of connection structure according to an embodiment of the present invention.
Fig. 7 is the perspective view at a visual angle of the front right bracket of connection structure according to an embodiment of the present invention.
Fig. 8 is the rearview of the front right bracket of connection structure according to an embodiment of the present invention.
Fig. 9 is the partial enlarged view of the rear support platform of connection structure according to an embodiment of the present invention.
Figure 10 is the perspective view at a visual angle of the after-poppet of connection structure according to an embodiment of the present invention.
Main appended drawing reference explanation:
1- oil sump, 2- left support platform, 201- left support portion, 3- right support platform, 301- right support portion, 4- rear support
Platform, 5- cylinder block, left support before 6-, the first mounting hole of 601-, the second mounting hole of 602-, the first connecting screw hole of 603-, 604-
First threaded hole, the first vertical plate of 605-, the first link block of 606-, the first bottom surface 607-, the first front end face of 608-, the right side 609-
Face, 7- front right bracket, 701- third mounting hole, the 4th mounting hole of 702-, the second connecting screw hole of 703-, the second threaded hole of 704-,
705- nameplate boss, the second vertical plate of 706-, the second link block of 707-, the second bottom surface 708-, the second front end face of 709-, the left side 710-
Face, 711- recessed portion, 8- after-poppet, the 5th mounting hole of 801-, 802- third threaded hole, 803- third bottom surface, 804- medial surface,
9- positioning convex platform, 10- connecting screw hole, 11- gear chamber.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 2, Fig. 1 is oil sump, cylinder block, gear chamber and company according to an embodiment of the present invention
One view stereo scheme of installation of binding structure.Fig. 2 is oil sump according to an embodiment of the present invention, cylinder block, gear chamber
And another view stereo scheme of installation of connection structure.A kind of tractor oil bottom case according to the preferred embodiment of the present invention
The lower plane of 1 connection structure, the upper plane and cylinder block 5 of oil sump 1 is fitted and connected, connection structure include left support platform 2,
Preceding left support 6, right support platform 3, front right bracket 7, rear support platform 4 and after-poppet 8.Left support platform 2 is set to oily bottom
The left side of 1 front end of shell；Preceding left support 6 is arranged at left support platform 2；Right support platform 3 is set to 1 front end of oil sump again
Side；Front right bracket 7 is arranged at right support platform 3；Rear support platform 4 is set to the two sides of 1 rear end of oil sump；After-poppet 8 is set
It sets at rear support platform 4.Left support platform 2, right support platform 3, rear support platform 4 are exactly original in oil sump 1 in fact
Slightly extend the part come, left support platform 2, right support platform 3, rear support platform on the basis of upper plane to side again respectively
4 top surface and the upper plane of oil sump 1 are coplanar in fact.
As shown in Figures 3 to 5, Fig. 3 is the part of the left support platform of connection structure according to an embodiment of the present invention
Enlarged drawing.Fig. 4 is the perspective view at a visual angle of the preceding left support of connection structure according to an embodiment of the present invention.Fig. 5 is root
According to the perspective view at another visual angle of the preceding left support of the connection structure of an embodiment of the present invention.In some embodiments, preceding
Left support 6 includes the first link block 606 and the first vertical plate 605 that 606 top of the first link block is arranged in, the first link block
606 include the first bottom surface 607 and the first front end face 608, and the right side of the right side of the first link block 606 and the first vertical plate 605 is put down altogether
Face forms right side 609, and the first bottom surface 607, right side 609 and the first front end face 608 are mutually perpendicular to.
In some embodiments, preceding left support 6 further includes the first threaded hole 604, the installation of the first mounting hole 601, second
Hole 602 and the first connecting screw hole 603.First threaded hole 604 is arranged on the first bottom surface 607, and the first threaded hole 604 is for leading to
The through-hole to match with the first threaded hole 604 being arranged on the top surface of bolt and left support platform 2 is crossed to connect；First mounting hole
601 are arranged on the first vertical plate 605, and the first mounting hole 601 is used to that preceding left support 6 to be fixedly mounted on cylinder block 5 by bolt
Left side on；Second mounting hole 602 is arranged on the first link block 606, and the second mounting hole 602 is used to pass through bolt for front left
Bracket 6 is fixedly mounted on the left side of cylinder block 5；First connecting screw hole 603 is arranged on the first front end face 608, and first connects
Screw hole 603 is connect for connecing by the preceding bridging of bolt and tractor.The first link block 606 and the first vertical plate 605 of preceding left support 6
It is integrally formed.
As shown in Figure 6 to 8, Fig. 6 is the part of the right support platform of connection structure according to an embodiment of the present invention
Enlarged drawing.Fig. 7 is the perspective view at a visual angle of the front right bracket of connection structure according to an embodiment of the present invention.Fig. 8 is root
According to the rearview of the front right bracket of the connection structure of an embodiment of the present invention.In some embodiments, front right bracket 7 includes
Second link block 707 and the second vertical plate 706 that 707 top of the second link block is arranged in, the second link block 707 include the second bottom
Face 708 and the second front end face 709, the coplanar formation left side in the left side in the left side of the second link block 707 and the second vertical plate 706
710, the second bottom surface 708, left side 710 and the second front end face 709 are mutually perpendicular to.The center of left side 710 has recessed portion
711, the effect of recessed portion 711 is the working (finishing) area for mitigating weight and reducing left side 710.
In some embodiments, front right bracket 7 further includes the second threaded hole 704, the installation of third mounting hole the 701, the 4th
Hole 702, the second connecting screw hole 703 and nameplate boss 705.Second threaded hole 704 is arranged on the second bottom surface 708, the second spiral shell
Pit 704 is used to connect by the through-hole to match with the second threaded hole 704 being arranged on the top surface of bolt and right support platform 3
It connects；Third mounting hole 701 is arranged on the second vertical plate 706, and third mounting hole 701 is used for by bolt that front right bracket 7 is fixed
It is mounted on the right side of cylinder block 5；4th mounting hole 702 is arranged on the second link block 707, and the 4th mounting hole 702 is used for
Front right bracket 7 is fixedly mounted on the right side of cylinder block 5 by bolt；Second connecting screw hole 703 is arranged in the second front end
On face 709, the second connecting screw hole 703 by the preceding bridging of bolt and tractor for being connect；The setting of nameplate boss 705 is vertical second
On the right side of plate 706, the table top and horizontal plane of nameplate boss 705 fold 80 ° to 90 ° of angle, and nameplate boss 705 is for pacifying
Fill product nameplate.The second link block 707 and the second vertical plate 706 of front right bracket 7 are integrally formed.
As shown in Fig. 9 to Figure 10, Fig. 9 is the part of the rear support platform of connection structure according to an embodiment of the present invention
Enlarged drawing.Figure 10 is the perspective view at a visual angle of the after-poppet of connection structure according to an embodiment of the present invention.In some realities
It applies in mode, after-poppet 8 includes third bottom surface 803 and the medial surface 804 vertical with third bottom surface 803, and third bottom surface 803 is used
It is fitted and connected in the top surface with rear support platform 4, medial surface 804 is used for and the side of cylinder block 5 is fitted and connected.
In some embodiments, after-poppet 8 further includes the 5th mounting hole 801 and third threaded hole 802.5th installation
Hole 801 is arranged on medial surface 804, and the 5th mounting hole 801 is used to be fixed on after-poppet 8 by bolt the side of cylinder block 5
On；Third threaded hole 802 is arranged on third bottom surface 803, and third threaded hole 802 is used to be fixed on after-poppet 8 by bolt
On the top surface of rear support platform 4.The present embodiment only depicts the after-poppet 8 and rear support platform 4 in left side, in fact 8 He of after-poppet
Rear support platform 4 is also possible to symmetrical a pair.Rear support platform 4 is substantially plate structure, and the bottom of plate structure is set
There is resigning angle, reduce occupied space, is installed convenient for the arrangement of complete machine attachment.
Referring again to Fig. 3 and Fig. 6, in some embodiments, the lower surface of left support platform 2 and the left side of oil sump 1
Left support portion 201 is provided between face；Right support is provided between the lower surface of right support platform 3 and the right side of oil sump 1
Portion 301.The effect in left support portion 201 and right support portion 301 is the bonding strength for reinforcing left support platform 2 and right support platform 3,
Left support portion 201 and right support portion 301 can also play the role of protecting oil sump 1 simultaneously, and oil sump 1 is prevented to be collided.
Referring again to Fig. 1 and Fig. 2, in some embodiments, the left side of oil sump 1 protrude above be provided with it is multiple vertical
The positioning convex platform 9 of extension, the positioning convex platform 9 of the present embodiment be according to four of fixed spacing setting, it is pre- on each positioning convex platform 9
There are the screw holes of M12.The bottom end of 1 two sides of oil sump is additionally provided with connecting screw hole 10, is the screw hole of M12.These above-mentioned screw holes can
Auxiliary support is carried out by oil sump 1 for post-processing the parts such as bracket, is applicable to different tractor chassis demands.
In conclusion the connection structure of tractor oil bottom case of the invention has the advantage that have and farm tractor front axle
Connection rationally, the high advantage of intensity, and fully considered post-processing support, gear chamber is independent, not and before tractor
Bridging connects, and when avoiding effect of inertia, oil sump junction carries excessive tensile stress and moment of flexure, prevents from resonating, effectively protect
Oil sump has been protected, the service life for improving diesel engine is conducive to；The connection for increasing oil sump and cylinder block by three brackets, mentions
Oil sump local strength has been risen, oil sump is effectively protected, has been conducive to the service life for improving diesel engine；Oil sump side band
There are boss and reserved M12 screw hole, and reserve four row's boss at a certain distance, can be used for post-processing the parts such as bracket and pass through oil sump
Auxiliary support is carried out, different tractor chassis demands are applicable to；It is also applicable when tractor discharge upgrading；With inscription on bracket
Board installation base can be used for following closely and put diesel engine nameplate.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (8)
1. a kind of connection structure of tractor oil bottom case, the upper plane of the oil sump and the lower plane of cylinder block are fitted and connected,
It is characterized in that, the connection structure includes:
Left support platform is set to the left side of the oil sump front end；
Preceding left support is arranged at the left support platform；
Right support platform is set to the side again of the oil sump front end；
Front right bracket is arranged at the right support platform；
Rear support platform is set to the two sides of the oil sump rear end；And
After-poppet is arranged at the rear support platform.
2. the connection structure of tractor oil bottom case as described in claim 1, which is characterized in that the preceding left support includes first
Link block and the first vertical plate that the first link block top is arranged in, first link block include the first bottom surface and the first front end
Face, the coplanar formation right side in the right side on the right side of first link block and first vertical plate are first bottom surface, described
Right side and first front end face are mutually perpendicular to.
3. the connection structure of tractor oil bottom case as claimed in claim 2, which is characterized in that the preceding left support further include:
First threaded hole is arranged on first bottom surface, and first threaded hole is used to pass through bolt and the left support
The through-hole to match with first threaded hole being arranged on the top surface of platform is connect；
First mounting hole is arranged on first vertical plate, and first mounting hole is used to pass through bolt for the front left branch
Frame is fixedly mounted on the left side of the cylinder block；
Second mounting hole is arranged on first link block, and second mounting hole is used to pass through bolt for the front left
Bracket is fixedly mounted on the left side of the cylinder block；And
First connecting screw hole is arranged on first front end face, and first connecting screw hole is used for through bolt and draws
The preceding bridging of machine connects.
4. the connection structure of tractor oil bottom case as described in claim 1, which is characterized in that the front right bracket includes second
Link block and the second vertical plate that the second link block top is arranged in, second link block include the second bottom surface and the second front end
Face, the coplanar formation left side in the left side in the left side of second link block and second vertical plate are second bottom surface, described
Left side and second front end face are mutually perpendicular to.
5. the connection structure of tractor oil bottom case as claimed in claim 4, which is characterized in that the front right bracket further include:
Second threaded hole is arranged on second bottom surface, and second threaded hole is used to pass through bolt and the right support
The through-hole to match with second threaded hole being arranged on the top surface of platform is connect；
Third mounting hole is arranged on second vertical plate, and the third mounting hole is used to pass through bolt for the front right branch
Frame is fixedly mounted on the right side of the cylinder block；
4th mounting hole is arranged on second link block, and the 4th mounting hole is used to pass through bolt for the front right
Bracket is fixedly mounted on the right side of the cylinder block；
Second connecting screw hole is arranged on second front end face, and second connecting screw hole is used for through bolt and draws
The preceding bridging of machine connects；And
Nameplate boss is arranged on the right side of second vertical plate, and the table top and horizontal plane of the nameplate boss fold 80 °
To 90 ° of angle, the nameplate boss is for installing product nameplate.
6. the connection structure of tractor oil bottom case as described in claim 1, which is characterized in that the after-poppet includes third bottom
Face and medial surface with the third plane perpendicular, the third bottom surface is used for and the top surface of the rear support platform is bonded and connects
It connects, the medial surface is used for and the side of the cylinder block is fitted and connected.
7. the connection structure of tractor oil bottom case as claimed in claim 6, which is characterized in that the after-poppet further include:
5th mounting hole is arranged on the medial surface, and the 5th mounting hole is for being consolidated the after-poppet by bolt
It is scheduled on the side of the cylinder block；And
Third threaded hole is arranged on the third bottom surface, and the third threaded hole is used to pass through bolt for the after-poppet
It is fixed on the top surface of the rear support platform.
8. the connection structure of tractor oil bottom case as described in claim 1, which is characterized in that the following table of the left support platform
Left support portion is provided between face and the left side of the oil sump；The lower surface of the right support platform and the oil sump
Right support portion is provided between right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592905.5A CN110173322A (en) | 2019-07-03 | 2019-07-03 | The connection structure of tractor oil bottom case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592905.5A CN110173322A (en) | 2019-07-03 | 2019-07-03 | The connection structure of tractor oil bottom case |
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| CN110173322A true CN110173322A (en) | 2019-08-27 |
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| CN201910592905.5A Pending CN110173322A (en) | 2019-07-03 | 2019-07-03 | The connection structure of tractor oil bottom case |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806215A (en) * | 2020-07-29 | 2020-10-23 | 广西玉柴机器股份有限公司 | High-strength cast iron oil pan, tractor frame and mounting method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806215A (en) * | 2020-07-29 | 2020-10-23 | 广西玉柴机器股份有限公司 | High-strength cast iron oil pan, tractor frame and mounting method thereof |
| CN111806215B (en) * | 2020-07-29 | 2023-10-24 | 广西玉柴机器股份有限公司 | High-strength cast iron oil pan, tractor frame and mounting method thereof |
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Application publication date: 20190827 |