CN209444750U - A kind of two-stage balance mechanism and engine - Google Patents
A kind of two-stage balance mechanism and engine Download PDFInfo
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- CN209444750U CN209444750U CN201822147248.7U CN201822147248U CN209444750U CN 209444750 U CN209444750 U CN 209444750U CN 201822147248 U CN201822147248 U CN 201822147248U CN 209444750 U CN209444750 U CN 209444750U
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Abstract
The utility model belongs to technical field of vehicle, discloses a kind of two-stage balance mechanism and engine.Two-stage balance mechanism, comprising: level-one balance shaft and second level balance shaft, the both ends of level-one balance shaft are sequentially connected respectively in crank and second level balance shaft, further includes: level-one balance weight is removably connected to level-one balance shaft；And second level balance weight, it is removably connected to second level balance shaft.The two-stage balance mechanism is according to different types, it is only necessary to the corresponding size calculated and design level-one balance weight and second level balance weight, to achieve the purpose that different type of machines is exchanged.Compared with prior art, a set of two-stage balance mechanism is corresponded to without each type, reduces the link of number of parts and assembling parts, to save production cost, and used level-one balance weight and the adjustable mode of second level balance weight, improve versatility.
Description
Technical field
The utility model relates to technical field of vehicle more particularly to a kind of two-stage balance mechanisms and engine.
Background technique
In to the practical R&D process of engine, it usually needs design the single cylinder engine conduct with special construction
Single cylinder testing machine, for improving the performance and parameter of existing product.Single cylinder testing machine manufacture is low with experimentation cost, is easy to adjust,
It is chiefly used in basic research and course of work exploitation, can effectively solve high-power engine process for machining and manufacturing complexity, process-cycle
The problems such as long and testing expenses are high.
Due to single cylinder testing machine working method and structure, there are biggish out-of-balance forces for single cylinder testing machine, mainly
It is unbalanced reciprocal inertia force and rotating inertia force.Existing single cylinder testing machine carries out out-of-balance force using two-stage balance mechanism
Balance appropriate improves the work smoothness of engine, the vibration for reducing engine and the noise caused by vibrating.
The vector that the two-stage balance mechanism is moved back and forth according to one can be melted into the principle of a pair of of forward and backward motion vector, reciprocal
Inertia power (or torque) becomes the power system such as centrifugal intertia force (or torque), then with equal in magnitude, contrary another therewith
One group of centrifugal intertia force (or torque) is balanced.
Existing single cylinder testing machine need for different types respectively to balance reciprocal inertia force square be designed, structure compared with
Complexity, components are more, and production cost is higher.Meanwhile when carrying out different experimental uses, need often to switch different type of machines
It is tested, two-stage balance mechanism excessively unicity, versatility is poor.
Utility model content
The purpose of this utility model is to provide a kind of two-stage balance mechanisms, simplify structure, reduce production cost, and improve
Versatility.
For this purpose, the utility model uses following technical scheme:
A kind of two-stage balance mechanism, comprising: level-one balance shaft and second level balance shaft, the both ends difference of the level-one balance shaft
It is sequentially connected in crank and the second level balance shaft, further includes:
Level-one balance weight is removably connected to the level-one balance shaft；And
Second level balance weight is removably connected to the second level balance shaft.
Preferably, being provided with the first threaded hole on the level-one balance weight, second is provided in the level-one balance shaft
Threaded hole, the first bolt wear and are threadedly connected to first threaded hole and second threaded hole.
Preferably, being provided with third threaded hole on the second level balance weight, the 4th is provided in the second level balance shaft
Threaded hole, the second bolt wear and are threadedly connected to the third threaded hole and the 4th threaded hole.
Preferably, the level-one balance shaft opened up far from the side of level-one balance weight it is fluted；And/or
The second level balance shaft opens up fluted far from the side of second level balance weight.
Preferably, the level-one balance shaft offers the first oil leab along its axial direction；And/or
The second level balance shaft offers the second oil leab along its axial direction.
Preferably, the level-one balance shaft radially offers the first pressure release oil duct, the first pressure release oil duct connects
Pass through first oil leab；And/or
The second level balance shaft radially offers the second pressure release oil duct, and the second pressure release oil duct is connected to described
Two oil leabs.
Preferably, the both ends of the level-one balance shaft and the second level balance shaft are arranged with bearing shell.
Preferably, one end of the level-one balance shaft and the second level balance shaft is provided with thrust plate.
Preferably, the level-one balance weight and the second level balance weight are arcuate structure.
In order to achieve the above object, the utility model additionally provides a kind of engine, including above-mentioned two-stage balance mechanism.
The utility model has the beneficial effects that
The two-stage balance mechanism that the utility model provides, between level-one balance shaft and level-one balance weight and second level balance shaft
The mode being detachably connected is all made of between second level balance weight, according to different types, it is only necessary to corresponding to calculate and design one
The size of grade balance weight and second level balance weight, to achieve the purpose that different type of machines is exchanged.Compared with prior art, it is not necessarily to each machine
Type corresponds to a set of two-stage balance mechanism, reduces the link of number of parts and assembling parts, to save production cost, and adopts
With level-one balance weight and the adjustable mode of second level balance weight, versatility is improved.
The utility model additionally provides a kind of engine, which includes above-mentioned two-stage balance mechanism, the engine
Limitation, the unicity of two-stage balance mechanism are reduced, practicability is stronger.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model two-stage balance mechanism；
Fig. 2 is the structural schematic diagram of level-one balance shaft in the utility model two-stage balance mechanism；
Fig. 3 is the cross-sectional view of level-one balance shaft in the utility model two-stage balance mechanism；
Fig. 4 is the structural schematic diagram of level-one balance weight in the utility model two-stage balance mechanism；
Fig. 5 is the structural schematic diagram of the utility model engine.
In figure:
1, level-one balance shaft；2, second level balance shaft；3, level-one balance weight；4, second level balance weight；5, bearing shell；6, thrust plate；
700, oil sump；
11, the second threaded hole；12, the first oil leab；13, the first pressure release oil duct；
31, the first threaded hole.
Specific embodiment
The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer,
It is described in further detail below in conjunction with technical solution of the attached drawing to the utility model embodiment, it is clear that described reality
Applying example is only the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention,
It is practical new to belong to this for those skilled in the art's every other embodiment obtained without creative efforts
The range of type protection.
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
A kind of two-stage balance mechanism is present embodiments provided, its disequilibrium energy is wanted for meeting single cylinder testing machine
It asks, the quantity of two-stage balance mechanism is two pairs.As shown in Figure 1, the two-stage balance mechanism includes level-one balance shaft 1, second level balance
Axis 2, level-one balance weight 3 and second level balance weight 4, the both ends of level-one balance shaft 1 are sequentially connected respectively in crank and second level balance shaft
2, driving gear is installed on the crank of crankshaft and is driven, and the both ends in level-one balance shaft 1 are respectively arranged with first gear
And second gear, first gear are meshed with driving gear, second gear and the third gear phase being mounted in second level balance shaft 2
Engagement, so that crankshaft drives the driving gear being mounted on crank to be rotated, the first gear positioned at 1 one end of level-one balance shaft
It is meshed with driving gear and level-one balance shaft 1 is driven to rotate, and the second gear positioned at 1 other end of level-one balance shaft and second level are flat
Third gear on weighing apparatus axis 2, which is meshed, drives second level balance shaft 2 to reversely rotate, to realize level-one balance shaft 1 and second level balance
2 liang of balance shafts of axis are synchronized, reversely rotate, the centrifugal force that the two generates in the running component in the horizontal direction because it is equal in magnitude,
Contrary and cancel out each other, the component that centrifugal force is generated in vertical direction forms resultant force and starts because size and Orientation is identical
Machine second level reciprocal inertia force offsets, to reach the balance of engine, reduce the vibration of engine with this and be caused by vibration
Engine noise, have to the reliable durable for improving the comfort of driver's work, each components of enhancing particularly significant
Effect.Meanwhile it being removably connected to level-one balance shaft 1 by the way that level-one balance weight 3 is arranged, second level balance weight 4 is detachably connected
In second level balance shaft 2, level-one balance shaft 1 and second level balance shaft 2 are designed as universal structure, and by each balance weight with it is each
Balance shaft adopts a split structure, and has operating flexibility.
The two-stage balance mechanism present embodiments provided, between level-one balance shaft 1 and level-one balance weight 3 and second level balances
The mode being detachably connected is all made of between axis 2 and second level balance weight 4, according to different types, it is only necessary to accordingly calculate and set
The size of level-one balance weight 3 and second level balance weight 4 is counted, to achieve the purpose that different type of machines is exchanged.Compared with prior art, it is not necessarily to
Each type corresponds to a set of two-stage balance mechanism, reduces the link of number of parts and assembling parts, is produced into save
This, and level-one balance weight 3 and the adjustable mode of 4 mass of second level balance weight are used, improve versatility.
In order to realize the axially position of level-one balance shaft 1 and second level balance shaft 2, as shown in Figure 1, in 1 He of level-one balance shaft
One end of second level balance shaft 2 is provided with thrust plate 6.Mounting hole is provided on thrust plate 6, thrust plate 6 is worn by screw
Mounting hole is connected with the oil sump 700 of engine, realizes the axially position and fixation of level-one balance shaft 1 and second level balance shaft 2,
Using thrust plate 6, structure is simple, and it is convenient to operate.Since level-one balance shaft 1 and second level balance shaft 2 need to rotate, as shown in Figure 1,
Bearing shell 5 is arranged at the both ends of level-one balance shaft 1 and second level balance shaft 2.For level-one balance shaft 1 and second level balance shaft 2, adopt
It is supported with bearing shell 5, has bearing capacity strong, the good advantage of high stability.
Further, as Figure 2-3, it in order to improve the rotation smoothness of level-one balance shaft 1 and second level balance shaft 2, needs
It to be lubricated to lubricating oil is passed through between its balance shaft and bearing shell 5, therefore axially offer the along it in level-one balance shaft 1
One oil leab 12, second level balance shaft 2 axially offer the second oil leab along it, so that level-one balance shaft 1 and second level are flat
The axis 2 that weighs passes through built-in oil duct progress associated lubrication.
However the open end of bearing shell 5 can carry out draining, but the closed end of bearing shell 5 is with the extension of use time, profit
The pressure of lubricating oil is big, and the lubrication for being unfavorable for level-one balance shaft 1 and second level balance shaft 2 needs to carry out draining by oil leak hole.It is based on
This reason radially offers the first pressure release oil duct 13 in the rear end of level-one balance shaft 1, first lets out as Figure 2-3
Pressure oil road 13 is connected to the first oil leab 12；The second pressure release oil duct is radially offered in the rear end of second level balance shaft 2,
Second pressure release oil duct is connected to the second oil leab, allow lubricating oil from the first pressure release oil duct 13 and the second pressure release oil duct into
Row draining, the case where reducing the pressure of lubricating oil greatly and influence lubricant effect.
Further, in order to realize being detachably connected between level-one balance shaft 1 and level-one balance weight 3, as shown in figure 4,
It is arcuate structure by level-one balance weight 3 and second level balance weight 4, so that the inside of level-one balance weight 3 and level-one balance shaft 1 is outer
Wall fits, and the inside of second level balance weight 4 and the outer wall of second level balance shaft 2 fit.Meanwhile as in Figure 2-4, level-one balances
It is provided with the first threaded hole 31 on block 3, the second threaded hole 11 is provided in level-one balance shaft 1, the first bolt is worn and screw thread connects
It is connected to the first threaded hole 31 and the second threaded hole 11；It is provided with third threaded hole on second level balance weight 4, is set in second level balance shaft 2
It is equipped with the 4th threaded hole, the second bolt wears and is threadedly connected to third threaded hole and the 4th threaded hole.By the first bolt and
Second bolt is connected, and using split structure, it is convenient to provide for replacement level-one balance weight 3 and second level balance weight 4, convenient for peace
Dress and maintenance, and by adjusting the switching of the quality of level-one balance weight 3 and second level balance weight 4 progress different type of machines, so that different
The generally applicable level-one balance weight 3 of type and second level balance weight 4 are adjusted, and enhance using versatility.
For the ease of the adjustment effect of level-one balance weight 3 and second level balance weight 4 is performed to maximum, as shown in Fig. 2, by one
Grade balance shaft 1 opens up fluted far from the side of level-one balance weight 3, and level-one balance shaft 1 is special-shaped cylindrical structure, level-one balance shaft
1 has a face to be cut into plane, remaining side be curved surface, by level-one balance shaft 1 far from level-one balance weight 3 side into
Row machining increases level-one balance so that the center of gravity of level-one balance shaft 1 is deviated to the direction close to level-one balance weight 3
The radial amount of unbalance of axis 1, and 3 collective effect of level-one balance weight, to achieve the purpose that improve counterbalance effect；Second level balance shaft 2
Side far from second level balance weight 4 opens up fluted, and second level balance shaft 2 is special-shaped cylindrical structure, and second level balance shaft 2 has a face
It is cut into plane, remaining side is curved surface.Cutting is carried out by the side in second level balance shaft 2 far from second level balance weight 4 to add
Work increases the radial direction of second level balance shaft 2 so that the center of gravity of second level balance shaft 2 is deviated to the direction close to second level balance weight 4
Amount of unbalance, and 4 collective effect of second level balance weight, to achieve the purpose that improve counterbalance effect.
The present embodiment additionally provides a kind of engine, which includes oil sump 700 and above-mentioned two-stage balance mechanism,
Two-stage balance mechanism is mounted on oil sump 700.Engine provided in this embodiment reduces limitation, the list of two-stage balance mechanism
One property, practicability are stronger.
In addition, above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, is able to carry out for a person skilled in the art various bright
Aobvious variation, readjustment and substitution is without departing from the protection scope of the utility model.Therefore, although passing through above embodiments
The utility model is described in further detail, but the utility model is not limited only to above embodiments, is not departing from
It can also include more other equivalent embodiments in the case that the utility model is conceived, and the scope of the utility model is by appended
Scope of the claims determine.
Claims (10)
1. a kind of two-stage balance mechanism, comprising: level-one balance shaft (1) and second level balance shaft (2), the level-one balance shaft (1)
Both ends are sequentially connected respectively in crank and the second level balance shaft (2), which is characterized in that further include:
Level-one balance weight (3) is removably connected to the level-one balance shaft (1)；And
Second level balance weight (4) is removably connected to the second level balance shaft (2).
2. two-stage balance mechanism according to claim 1, which is characterized in that be provided on the level-one balance weight (3)
One threaded hole (31) is provided with the second threaded hole (11) on the level-one balance shaft (1), and the first bolt wears and is threadedly connected to
First threaded hole (31) and second threaded hole (11).
3. two-stage balance mechanism according to claim 1, which is characterized in that be provided on the second level balance weight (4)
Three threaded holes are provided with the 4th threaded hole on the second level balance shaft (2), and the second bolt wears and is threadedly connected to the third
Threaded hole and the 4th threaded hole.
4. two-stage balance mechanism according to claim 1, which is characterized in that the level-one balance shaft (1) is flat far from level-one
The side of weighing apparatus block (3) opens up fluted；And/or
The second level balance shaft (2) opens up fluted far from the side of second level balance weight (4).
5. two-stage balance mechanism according to claim 1, which is characterized in that the level-one balance shaft (1) is opened along its axial direction
Equipped with the first oil leab (12)；And/or
The second level balance shaft (2) offers the second oil leab along its axial direction.
6. two-stage balance mechanism according to claim 5, which is characterized in that the level-one balance shaft (1) is radially opened
Equipped with the first pressure release oil duct (13), the first pressure release oil duct (13) is connected to first oil leab (12)；And/or
The second level balance shaft (2) radially offers the second pressure release oil duct, and the second pressure release oil duct is connected to described
Two oil leabs.
7. two-stage balance mechanism according to claim 1, which is characterized in that the level-one balance shaft (1) and the second level
The both ends of balance shaft (2) are arranged with bearing shell (5).
8. two-stage balance mechanism according to claim 1, which is characterized in that the level-one balance shaft (1) and the second level
One end of balance shaft (2) is provided with thrust plate (6).
9. two-stage balance mechanism according to claim 1, which is characterized in that the level-one balance weight (3) and the second level
Balance weight (4) is arcuate structure.
10. a kind of engine, which is characterized in that including any two-stage balance mechanism of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147248.7U CN209444750U (en) | 2018-12-20 | 2018-12-20 | A kind of two-stage balance mechanism and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822147248.7U CN209444750U (en) | 2018-12-20 | 2018-12-20 | A kind of two-stage balance mechanism and engine |
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| Publication Number | Publication Date |
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| CN209444750U true CN209444750U (en) | 2019-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417931A (en) * | 2021-01-25 | 2021-09-21 | 中国第一汽车股份有限公司 | Balance shaft assembly with good lubricating system |
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2018
- 2018-12-20 CN CN201822147248.7U patent/CN209444750U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417931A (en) * | 2021-01-25 | 2021-09-21 | 中国第一汽车股份有限公司 | Balance shaft assembly with good lubricating system |
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