CN110425039A - A kind of diesel engine of the agricultural machinery with balancer installation positioning accessory - Google Patents
A kind of diesel engine of the agricultural machinery with balancer installation positioning accessory Download PDFInfo
- Publication number
- CN110425039A CN110425039A CN201910705160.9A CN201910705160A CN110425039A CN 110425039 A CN110425039 A CN 110425039A CN 201910705160 A CN201910705160 A CN 201910705160A CN 110425039 A CN110425039 A CN 110425039A
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- Prior art keywords
- balancer
- hex bolts
- plate
- shaped plate
- diesel engine
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses a kind of diesel engine of agricultural machinery with balancer installation positioning accessory, including body, several first bearing lids and quantity are equipped with as two second bearing lids by the first bolt on the body, second bearing, which covers, offers the first balancer mounting hole, the second bearing is covered equipped with axial regulating mechanism, axial regulating mechanism includes the first L shaped plate and the second L shaped plate, first L shaped plate offers sliding slot, second L shaped plate is adapted with the sliding slot, one end of first L shaped plate is equipped with the first hex bolts, first hex bolts runs through first L shaped plate, one end of first hex bolts extends in the sliding slot, one end of second L shaped plate offers bolt hole.The utility model has the advantages that the bottom surface of balancer and body is enabled to be located at same straight line and can further increase the operation is stable of balancer simultaneously, the case where it is excessive and cause its counterbalance effect undesirable to reduce radial clearance, waste of energy, occurs.
Description
Technical field
The present invention relates to diesel engine realms, have balancer installation fixed it particularly relates to which a kind of agricultural machinery is used
The diesel engine of position accessory.
Background technique
In-line 4 cylinder reciprocating internal combustion engines are due to its design feature, its two-stage reciprocating inertia force is unable to self-balancing in the running,
Engine is caused to generate biggish vibration and noise.Second order balancer is used on such engine to balance the reciprocal inertia of second order
Power can significantly reduce engine luggine and noise.
But balancer, during installation, the axial gap of balancer plays an important role, axial gap mistake
Small and clamping stagnation, axial gap is excessive and play occurs that abnormal sound easily occurs.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
The diesel engine that accessory is positioned with balancer installation is used the purpose of the present invention is to provide a kind of agricultural machinery,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of the agricultural machinery diesel engine with balancer installation positioning accessory, including body, on the body
Several first bearing lids and quantity are equipped with as two second bearing lids by the first bolt, and the second bearing, which covers, to be offered
First balancer mounting hole, the second bearing are covered equipped with axial regulating mechanism, and the axial regulating mechanism includes the first L shape
Plate and the second L shaped plate, first L shaped plate offer sliding slot, and second L shaped plate is adapted with the sliding slot, the first L
One end of shape plate is equipped with the first hex bolts, and first hex bolts runs through first L shaped plate, first hex bolts
One end extend in the sliding slot, one end of second L shaped plate offers bolt hole, first hex bolts with it is described
Bolt hole is adapted, and the body is equipped with radial testing agency, and the second bearing is covered equipped with radiai adjustment mechanism.
Further, the radial testing agency includes bottom plate, and the bottom plate is fixed on the machine body by the second bolt, institute
The both ends for stating bottom plate are fixed with column, open up fluted on the column, ripping bar are equipped in the groove, the ripping bar passes through
Pin shaft is connected with the inner wall of the groove, and the both ends of the ripping bar are fixed with respectively is adjacent to plate.
Further, the both ends of the ripping bar are fixed with folded plate, and the plate that is adjacent to is fixed under the folded plate.
Further, the radiai adjustment mechanism includes the traveller for being fixed on second bearing and covering, and the traveller is equipped with
The sliding block that quantity is two, the section of the sliding block are right-angled trapezium, and, the sliding block is oppositely arranged, and is opened up under the sliding block
There is sliding rail, the sliding rail is adapted with the traveller, and the side of one of sliding block is equipped with the second hex bolts, and the described 2nd 6
Corner bolt is fixed with the first nut, second hex bolts and described first on another sliding block through two sliding blocks
Nut thread connection.
Further, between first hex bolts and first L shaped plate and the second hex bolts and the sliding block
It is connected by the first plane bearing.
Further, several first latching tooths are fixed between the traveller, opened up in the sliding block it is jagged, it is described lack
Mouth is equipped with the second latch, and the side of second latch is fixed with driving column, runs through on the sliding block and be equipped with through-hole, the biography
Dynamic column is located in the through-hole, and third hex bolts, the third hex bolts and the through hole whorl are equipped in the through-hole
Connection, is connected between the driving column and the third hex bolts by the second plane bearing.
Further, the two sides of the through-hole offer cavity, and the two sides of the column are fixed with cross bar, the cross bar
Position in the cavity, is connected by spring with the inner wall of the cavity under the cross bar.
Further, backing plate is placed on the sliding block.
Further, the backing plate is equipped with mounting plate, is fixed with balancer ontology, the installation on the mounting plate
The second balancer mounting hole is offered on plate, is run through between the first balancer mounting hole and the second balancer mounting hole
Equipped with third bolt.
Further, card slot is offered under the mounting plate, the card slot matches with the backing plate.
Compared with prior art, the invention has the following advantages:
(1), it can guarantee the precision of balancer axial gap and ensure that the operation is stable of its balancer.
(2), radial distance can be adjusted, the bottom surface of balancer and the same straight line that is located at of body simultaneously can
Enough further the operation is stable for increasing balancer, reduction radial clearance is excessive and causes its counterbalance effect undesirable, wastes energy
The case where source, occurs.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The top view of machine；
Fig. 2 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The cross-sectional view of first L shaped plate in machine；
Fig. 3 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The top view of second L shaped plate in machine；
Fig. 4 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
Radial testing agency main view in machine；
Fig. 5 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The side view of ripping bar in machine in radial testing agency；
Fig. 6 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The structural schematic diagram of radiai adjustment mechanism in machine；
Fig. 7 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The cross-sectional view of radiai adjustment mechanism in machine；
Fig. 8 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The sectional drawing of first L shaped plate in machine；
Fig. 9 is a kind of diesel engine of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The top view of second bearing lid in machine；
Figure 10 is a kind of diesel oil hair of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The structural schematic diagram of second latch in motivation；
Figure 11 is a kind of diesel oil hair of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The top view of body in motivation when installation backing plate；
Figure 12 is a kind of diesel oil hair of the agricultural machinery according to an embodiment of the present invention with balancer installation positioning accessory
The structural schematic diagram of balancer ontology in motivation.
Appended drawing reference:
1, body；2, first bearing lid；3, second bearing lid；4, the first balancer mounting hole；5, the first L shaped plate；6,
Two L shaped plates；7, sliding slot；8, the first hex bolts；9, bolt hole；10, radial testing agency；11, radiai adjustment mechanism；12, bottom
Plate；13, column；14, groove；15, ripping bar；16, pin shaft；17, it is adjacent to plate；18, folded plate；19, traveller；20, sliding block；21, second
Hex bolts；22, the first nut；23, first latching tooth；24, the second latch；25, through-hole；26, third hex bolts；27, cavity；
28, cross bar；29, spring；30, backing plate；31, mounting plate；32, balancer ontology；33, the second balancer mounting hole；34, card slot；
35, notch；36, driving column；37, sliding rail.
Specific embodiment
In the following, making further description to invention in conjunction with attached drawing and specific embodiment:
Embodiment one:
Please refer to Fig. 1-10, a kind of agricultural machinery according to an embodiment of the present invention is used with balancer installation positioning accessory
Diesel engine, including body 1 are equipped with several first bearing lids 2 by the first bolt on the body 1 and quantity are two
Second bearing lid 3, the first balancer mounting hole 4 is offered on the second bearing lid 3, and the second bearing lid 3 is equipped with axis
To regulating mechanism, the axial regulating mechanism includes the first L shaped plate 5 and the second L shaped plate 6, and first L shaped plate 5 offers cunning
Slot 7, second L shaped plate 6 are adapted with the sliding slot 7, and one end of first L shaped plate 5 is equipped with the first hex bolts 8, institute
The first hex bolts 8 is stated through first L shaped plate 5, one end of first hex bolts 8 extends in the sliding slot 7, institute
The one end for stating the second L shaped plate 6 offers bolt hole 9, and first hex bolts 8 is adapted with the bolt hole 9, the body
1 is equipped with radial testing agency 10, and the second bearing lid 3 is equipped with radiai adjustment mechanism 11.
First L shaped plate 5 and the second L shaped plate 6 are stuck in second bearing by related personnel by above scheme through the invention
On lid 3, then by the first hex bolts 8 of rotation, the first hex bolts 8 is enabled to enable the first L under the action of bolt hole 9
It is close to each other between shape plate 5 and the second L shaped plate 6, so as to reach the first balancer mounting hole adjusted on second bearing lid 3
4 effect can guarantee the precision of balancer axial gap and ensure that the operation is stable of its balancer.
Embodiment two:
Fig. 1-12 is please referred to, for radial testing agency 10, the radial direction testing agency 10 includes bottom plate 12, described
Bottom plate 12 is fixed on the machine body by the second bolt, and the both ends of the bottom plate 12 are fixed with column 13, is opened on the column 13
Equipped with groove 14, ripping bar 15 is equipped in the groove 14, the ripping bar 15 is connected by pin shaft 16 with the inner wall of the groove 14
It connects, the both ends of the ripping bar 15 are fixed with respectively is adjacent to plate 17.After second bearing lid 3 installs, pass through related personnel
The ripping bar 15 for pressing 1 one end of body, enables ripping bar 15 be in contact with body, so as to enable the other end of ripping bar 15 tilt, passes through
It measures and is adjacent to the distance between plate 17 and the first L shaped plate on ripping bar 15, to go to make two by the second hex bolts 21
The distance between sliding block 20 changes, so that the level height of the first L shaped plate 5 of change is gone, so that its radial distance is adjusted.It is right
For ripping bar 15, the both ends of the ripping bar 15 are fixed with folded plate 18, and the plate 17 that is adjacent to is fixed under the folded plate 18.Make
When height between proper body 1 and the first L shaped plate 5 is inconsistent, it can be enabled by the radian of folded plate 18 and be adjacent to the difference of plate 17
First L shaped plate 5 and body 1 inconsistent with height is in contact.For radiai adjustment mechanism 11, the radiai adjustment mechanism
11 include the traveller 19 being fixed on second bearing lid 3, and the traveller 19 is equipped with the sliding block 20 that quantity is two, the sliding block
20 section is right-angled trapezium, and, the sliding block 20 is oppositely arranged, and sliding rail 37, the sliding rail 37 are offered under the sliding block 20
It is adapted with the traveller 19, the side of one of sliding block 20 is equipped with the second hex bolts 21, second hex bolts 21
Through two sliding blocks 20, it is fixed with the first nut 22 on another sliding block 20, second hex bolts 21 and described the
One nut 22 is threadedly coupled.For the first hex bolts 8, first hex bolts 8 and first L shaped plate 5 and the
It is connected between two hex bolts 21 and the sliding block 20 by the first plane bearing.Reduce the first hex bolts 8 and the first L shape
Frictional force between plate 5 and the second hex bolts 21 and sliding block 20.For traveller 19, it is fixed between the traveller 19
Several first latching tooths 23 open up jagged 35 in the sliding block 20, and the notch 35 is equipped with the second latch 24, second latch
24 side is fixed with driving column 36, runs through on the sliding block 20 and is equipped with through-hole 25, the driving column 36 is located at the through-hole
In 25, it is equipped with third hex bolts 26 in the through-hole 25, the third hex bolts 26 is threadedly coupled with the through-hole 25, institute
It states and is connected between driving column 36 and the third hex bolts 26 by the second plane bearing.By the way that the second latch 24 is arranged,
When sliding block 20 positions, by rotating third hex bolts 26 column 13 can be moved down, thus enable the second latch 24 with
First latching tooth 23 matches, and the position of sliding block 20 is enabled to be fixed.For through-hole 25, the two sides of the through-hole 25 are offered
Cavity 27, the two sides of the column 13 are fixed with cross bar 28, and the cross bar 28 is located in the cavity 27, under the cross bar 28
It is connected by spring 29 with the inner wall of the cavity 27.Increase the bite force between first latching tooth 23 and the second latch 24.
For sliding block 20, backing plate 30 is placed on the sliding block 20.Make the first L shaped plate 5 and the second L shaped plate 6 can by backing plate
It dismantles, so as to be recycled.For backing plate 30, the backing plate 30 is equipped with mounting plate 31, on the mounting plate 31
It is fixed with balancer ontology 32, the second balancer mounting hole 33, the first balancer peace are offered on the mounting plate 31
It fills between hole 4 and the second balancer mounting hole 33 through equipped with third bolt.For mounting plate 31, the mounting plate
Card slot 34 is offered under 31, the card slot 34 matches with the backing plate 30.Card slot 34 enables to the position of backing plate 30 that can obtain
To restriction, backing plate 30 is avoided to slide.
In order to facilitate above-mentioned technical proposal of the invention is understood, below just present invention working principle in the actual process or
Person's mode of operation is described in detail.
In practical application, the first L shaped plate 5 and the second L shaped plate 6 are stuck on second bearing lid 3 by related personnel, so
Afterwards by the first hex bolts 8 of rotation, the first hex bolts 8 is enabled to enable 5 He of the first L shaped plate under the action of bolt hole 9
It is close to each other between second L shaped plate 6, so as to reach the effect for adjusting the first balancer mounting hole 4 on second bearing lid 3
Fruit can guarantee the precision of balancer axial gap and ensure that the operation is stable of its balancer.Pass through related personnel's pressing machine
The ripping bar 15 of 1 one end of body, enables ripping bar 15 be in contact with body, so as to enable the other end of ripping bar 15 tilt, is prized by measuring
It is adjacent to the distance between plate 17 and the first L shaped plate on bar 15, to go to make two sliding blocks 20 by the second hex bolts 21
The distance between change, to go to change the level height of the first L shaped plate 5, so that its radial distance is adjusted, when having adjusted
Cheng Hou is high with 5 width of the first L shaped plate by placing under radial testing agency 10 and the disassembly of the first L shaped plate 5 and the second L shaped plate 6
Consistent backing plate 30 is spent, then balancer ontology 32 is mounted on second bearing lid 3 by mounting plate 31.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of diesel engine of agricultural machinery with balancer installation positioning accessory, which is characterized in that including body
(1), several first bearing lids (2) and quantity are equipped with as two second bearing lids by the first bolt on the body (1)
(3), the first balancer mounting hole (4) is offered on the second bearing lid (3), the second bearing lid (3) is equipped with axial
Regulating mechanism, the axial regulating mechanism include the first L shaped plate (5) and the second L shaped plate (6), and first L shaped plate (5) opens up
Have sliding slot (7), second L shaped plate (6) is adapted with the sliding slot (7), and one end of first L shaped plate (5) is equipped with first
Hex bolts (8), first hex bolts (8) run through first L shaped plate (5), one end of first hex bolts (8)
It extends in the sliding slot (7), one end of second L shaped plate (6) offers bolt hole (9), first hex bolts (8)
It is adapted with the bolt hole (9), the body (1) is equipped with radial testing agency (10), sets on the second bearing lid (3)
There are radiai adjustment mechanism (11).
2. a kind of diesel engine of the agricultural machinery according to claim 1 with balancer installation positioning accessory,
It is characterized in that, the radial direction testing agency (10) includes bottom plate (12), and the bottom plate (12) is fixed on body by the second bolt
On, the both ends of the bottom plate (12) are fixed with column (13), open up fluted (14), the groove on the column (13)
(14) ripping bar (15) are equipped in, the ripping bar (15) is connected by pin shaft (16) with the inner wall of the groove (14), the sled
The both ends of bar (15) are fixed with respectively is adjacent to plate (17).
3. a kind of diesel engine of the agricultural machinery according to claim 2 with balancer installation positioning accessory,
It is characterized in that, the both ends of the ripping bar (15) are fixed with folded plate (18), and the plate (17) that is adjacent to is fixed on the folded plate (18)
Under.
4. a kind of diesel engine of the agricultural machinery according to claim 3 with balancer installation positioning accessory,
It is characterized in that, the radiai adjustment mechanism (11) includes the traveller (19) being fixed on second bearing lid (3), the traveller (19)
It is equipped with the sliding block (20) that quantity is two, the section of the sliding block (20) is right-angled trapezium, and, the sliding block (20) is opposite to be set
It sets, is offered sliding rail (37) under the sliding block (20), the sliding rail (37) is adapted with the traveller (19), one of sliding block
(20) side is equipped with the second hex bolts (21), second hex bolts (21) through two sliding blocks (20), another
It is fixed on sliding block (20) the first nut (22), second hex bolts (21) and the first nut (22) screw thread connect
It connects.
5. a kind of diesel engine of the agricultural machinery according to claim 4 with balancer installation positioning accessory,
It is characterized in that, first hex bolts (8) and first L shaped plate (5) and second hex bolts (21) and the cunning
Block is connected between (20) by the first plane bearing.
6. a kind of diesel engine of the agricultural machinery according to claim 5 with balancer installation positioning accessory,
It is characterized in that, is fixed with several first latching tooths (23) between the traveller (19), opened up in the sliding block (20) jagged
(35), the notch (35) is equipped with the second latch (24), and the side of second latch (24) is fixed with driving column (36), institute
It states through through-hole (25) are equipped on sliding block (20), the driving column (36) is located in the through-hole (25), in the through-hole (25)
Equipped with third hex bolts (26), the third hex bolts (26) is threadedly coupled with the through-hole (25), the driving column
(36) it is connected between the third hex bolts (26) by the second plane bearing.
7. a kind of diesel engine of the agricultural machinery according to claim 6 with balancer installation positioning accessory,
It being characterized in that, the two sides of the through-hole (25) offer cavity (27), and the two sides of the column (13) are fixed with cross bar (28),
The cross bar (28) is located in the cavity (27), passes through the inner wall of spring (29) and the cavity (27) under the cross bar (28)
It is connected.
8. a kind of diesel engine of the agricultural machinery according to claim 7 with balancer installation positioning accessory,
It is characterized in that, is placed with backing plate (30) on the sliding block (20).
9. a kind of diesel engine of the agricultural machinery according to claim 8 with balancer installation positioning accessory,
It being characterized in that, the backing plate (30) is equipped with mounting plate (31), balancer ontology (32) are fixed on the mounting plate (31),
The second balancer mounting hole (33), the first balancer mounting hole (4) and described second are offered on the mounting plate (31)
Through equipped with third bolt between balancer mounting hole (33).
10. a kind of diesel engine of the agricultural machinery according to claim 9 with balancer installation positioning accessory,
It is characterized in that, offer card slot (34) under the mounting plate (31), the card slot (34) matches with the backing plate (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705160.9A CN110425039B (en) | 2019-08-01 | 2019-08-01 | Agricultural machine is with diesel engine who has balancer installation location and assists utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705160.9A CN110425039B (en) | 2019-08-01 | 2019-08-01 | Agricultural machine is with diesel engine who has balancer installation location and assists utensil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425039A true CN110425039A (en) | 2019-11-08 |
| CN110425039B CN110425039B (en) | 2020-10-30 |
Family
ID=68413620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910705160.9A Active CN110425039B (en) | 2019-08-01 | 2019-08-01 | Agricultural machine is with diesel engine who has balancer installation location and assists utensil |
Country Status (1)
| Country | Link |
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| CN (1) | CN110425039B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112643579A (en) * | 2020-12-22 | 2021-04-13 | 东台市建东机械制造有限公司 | Utensil is assisted in diesel engine balancer installation location |
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| US6571763B1 (en) * | 2001-12-27 | 2003-06-03 | Daimlerchrysler Corporation | Oil conditioner |
| US20050103304A1 (en) * | 2003-11-14 | 2005-05-19 | Kubota Corporation | Engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112643579A (en) * | 2020-12-22 | 2021-04-13 | 东台市建东机械制造有限公司 | Utensil is assisted in diesel engine balancer installation location |
| CN112643579B (en) * | 2020-12-22 | 2023-08-29 | 东台市建东机械制造有限公司 | Auxiliary tool for installing and positioning balancer of diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110425039B (en) | 2020-10-30 |
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