CN212360648U - Single-support balance shaft structure - Google Patents
Single-support balance shaft structure Download PDFInfo
- Publication number
- CN212360648U CN212360648U CN202021559561.2U CN202021559561U CN212360648U CN 212360648 U CN212360648 U CN 212360648U CN 202021559561 U CN202021559561 U CN 202021559561U CN 212360648 U CN212360648 U CN 212360648U
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- Prior art keywords
- balance
- shaft
- balance shaft
- axle
- shaft seat
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- 238000010276 construction Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005461 lubrication Methods 0.000 abstract description 7
- 238000013016 damping Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 7
- 230000035939 shock Effects 0.000 description 3
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a balanced axle construction of single support, including axle bed and two parallel arrangement's balanced axle, two the middle part of balanced axle is pegged graft on the axle bed, two the front end of balanced axle is equipped with the gear, the rear end of balanced axle is equipped with the balancing piece. The utility model discloses a single-support balance shaft structure, structural design is reasonable, belongs to the engine damping technical field, and simple structure, processing is convenient, can effectively reduce the weight of the whole part, and simultaneously also simplifies the structure; meanwhile, one part of the supporting lubrication is reduced, and the risk of lubrication failure is reduced.
Description
Technical Field
The utility model relates to an engine shock attenuation technique, more specifically say, it relates to a balanced axle construction of single support.
Background
With the increasing requirements of terminal customers on the NVH performance of the engine, the whole vehicle has the requirements of specially improving noise reduction and shock absorption during engine design.
At present, the engine industry has more applied balanced axle construction, but, current balanced axle construction uses biax bearing to support the balanced axle usually, and the structure is complicated, and weight is big, and the balanced axle of not being convenient for is installed on the engine organism and is arranged.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to some not enough of the above-mentioned of prior art, the utility model aims at providing a simple to operate, the balanced axle construction of single support that weight is low.
In order to achieve the above object, the utility model provides a balanced axle construction of single brace, including axle bed and two parallel arrangement's balanced axle, two the middle part of balanced axle is pegged graft on the axle bed, two the front end of balanced axle is equipped with the gear, the rear end of balanced axle is equipped with the balancing piece.
Furthermore, a bush matched with the bearing hole of the shaft seat is arranged in the middle of the balance shaft, and an oil groove is arranged in the middle of the bearing hole of the shaft seat.
Furthermore, two thrust plates which are matched with the two ends of the bushing are arranged at the two ends of the shaft seat.
As a further improvement, the front end of the shaft seat is provided with a gear chamber with an opened upper end, and the front end of the shaft seat is provided with a gear cover with an opened upper end.
Furthermore, a protective shell which extends axially backwards is arranged at the rear end of the shaft seat, and the inner wall of the protective shell is of an inner revolution surface structure which is matched with the outer wall of the balance block.
As a further improvement, the balance weight comprises a sleeve matched with the rear end of the balance shaft and an eccentric block which is arranged on one side of the sleeve and protrudes radially.
Furthermore, a balancing weight is arranged at the rear end of the eccentric block.
Furthermore, the eccentric block and the balancing weight are in fan-shaped structures.
Furthermore, the sleeve is provided with a balance block positioning pin connected with the balance shaft.
Furthermore, the upper end of the shaft seat is provided with a shaft seat positioning pin.
Advantageous effects
Compared with the prior art, the utility model discloses a balanced axle construction of single bracing's beneficial effect as follows:
1) the single-support balance shaft structure of the utility model can improve the NVH performance of the engine, the double balance shafts are installed according to the vibration noise source measuring points, the second-order reciprocating inertia force of the engine is balanced in a pertinence manner, the natural frequency is improved, and the engine and the whole vehicle structure are prevented from generating resonance;
2) the single-support balance shaft structure of the utility model has the advantages of larger weight and structure cost compared with the double-support balance shaft applied in the market, has simpler structure and convenient processing, is convenient for the arrangement of the engine body structure, can effectively reduce the weight of the whole part, and simultaneously simplifies the structure; meanwhile, one part of the supporting lubrication is reduced, and the risk of lubrication failure is reduced.
Drawings
Fig. 1 is a structural sectional view of a single-support balance shaft structure of the present invention;
fig. 2 is a perspective view of the single-support balance shaft structure of the present invention.
In the figure: 1. a shaft seat; 2. a balance shaft; 3. a gear; 4. a counterbalance; 5, lining the sleeve; 6. an oil sump; 7. a thrust plate; 8. a gear chamber; 9. a gear cover; 10. a protective shell; 11. a sleeve; 12. an eccentric block; 13. a balancing weight; 14. a balance block positioning pin; 15. axle seat locating pin.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention, but are intended to be covered by the appended claims in any way.
The specific embodiment of the present invention is such: referring to fig. 1-2, a single-support balance shaft structure comprises a shaft seat 1 and two balance shafts 2 arranged in parallel, the middle parts of the two balance shafts 2 are inserted into the shaft seat 1, gears 3 are arranged at the front ends of the two balance shafts 2, balance blocks 4 are arranged at the rear ends of the two balance shafts 2, the balance shaft structure is installed according to a vibration noise source measuring point, and the rotation speed of the two balance shafts 2 is twice the rotation speed of a crankshaft, so that the second-order vibration of an engine can be eliminated. In the single-support balance shaft structure, only one shaft seat 1 is needed to support two balance shafts 2, the gears 3 and the balance blocks 4 at the two ends of the balance shafts 2 enable the stress of the balance shafts 2 to be concentrated in the middle, and the balance shafts 2 can be stably supported through the shaft seat 1, so that the stress balance of the balance shafts is ensured; compared with the double-support balance shaft applied to the market, the double-support balance shaft has the advantages of larger weight and structural cost, simpler structure and convenient processing, can effectively reduce the weight of the whole part, and simultaneously simplifies the structure; meanwhile, one part of the supporting lubrication is reduced, and the risk of lubrication failure is reduced.
In this embodiment, the middle of the balance shaft 2 is provided with a bush 5 matched with the bearing hole of the shaft seat 1, the middle of the bearing hole of the shaft seat 1 is provided with an oil groove 6, the bush 5 is provided with an oil passing hole corresponding to the oil groove 6, lubricating grease is stored in the oil groove 6, and the lubricating grease flows to the contact surface of the bush 5 and the balance shaft 2 through the oil passing hole to lubricate the rotating balance shaft 2.
In this embodiment, two ends of the shaft seat 1 are provided with two thrust plates 7 adapted to two ends of the bushing 5, the thrust plates 7 limit the bushing 5, and meanwhile, the end surfaces of the gear 3 and the balance weight 4 can be prevented from touching the end surface of the shaft seat 1.
In this embodiment, the front end of the shaft seat 1 is provided with a gear chamber 8 with an open upper end, the front end of the shaft seat 1 is provided with a gear cover 9 with an open upper end, and a cavity between the gear chamber 8 and the gear cover 9 can store lubricating oil, so that the cooling and lubrication of the gear 3 and the balance shaft 2 are ensured.
In this embodiment, a protective shell 10 extending axially backward is disposed at the rear end of the shaft seat 1, and the inner wall of the protective shell 10 is an inner surface of revolution adapted to the outer wall of the balance weight 4.
In this embodiment, the balancing block 4 includes the sleeve 11 that matches with the rear end of the balance shaft 2 and the eccentric block 12 that radially protrudes and sets up that is equipped with in one side of sleeve 11, and the rear end of eccentric block 12 is equipped with the balancing weight 13, and the balancing weight 13 can be connected with eccentric block 12 detachable through screw or pin, can increase and decrease balancing weight 13 as required, satisfies the shock attenuation requirement of engine.
In this embodiment, the eccentric mass 12 and the weight member 13 are fan-shaped and can pass through.
In this embodiment, the sleeve 11 is provided with a balance weight positioning pin 14 connected to the balance shaft 2, and the balance weight 4 is quickly mounted by the balance weight positioning pin 14.
In this embodiment, the upper end of the shaft seat 1 is provided with a shaft seat positioning pin 15, and the shaft seat 1 is quickly connected with the engine cylinder block through the shaft seat positioning pin 15.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (10)
1. The utility model provides a balanced axle construction of single bracing, its characterized in that includes axle bed (1) and two parallel arrangement's balanced axle (2), two the middle part of balanced axle (2) is pegged graft on axle bed (1), two the front end of balanced axle (2) is equipped with gear (3), the rear end of balanced axle (2) is equipped with balancing piece (4).
2. A single-support balance shaft structure according to claim 1, wherein the middle part of the balance shaft (2) is provided with a bush (5) matched with the bearing hole of the shaft seat (1), and the middle part of the bearing hole of the shaft seat (1) is provided with an oil groove (6).
3. A singly supported balance shaft arrangement according to claim 2, characterized in that both ends of the shaft seat (1) are provided with two thrust plates (7) adapted to both ends of the bushing (5).
4. A single-support balance shaft structure according to claim 1, wherein the front end of the shaft seat (1) is provided with a gear chamber (8) with an open upper end, and the front end of the shaft seat (1) is provided with a gear cover (9) with an open upper end.
5. A single-support balance shaft structure according to claim 4, wherein the rear end of the shaft seat (1) is provided with a protective shell (10) extending axially backward, and the inner wall of the protective shell (10) is an inner revolution surface structure adapted to the outer wall of the balance weight (4).
6. A singly supported balance shaft construction according to any of claims 1 to 5 characterized in that the balance mass (4) comprises a sleeve (11) adapted to the rear end of the balance shaft (2) and a radially protruding eccentric mass (12) provided on one side of the sleeve (11).
7. A singly supported balance shaft construction according to claim 6 characterized in that the rear end of the eccentric mass (12) is provided with a counterweight (13).
8. A singly supported balance shaft construction according to claim 7 characterized in that said eccentric mass (12) and said counterweight mass (13) are of fan-shaped configuration.
9. A singly supported balance shaft arrangement according to claim 6, characterized in that the sleeve (11) is provided with a balance weight positioning pin (14) connected to the balance shaft (2).
10. A singly supported balance shaft arrangement according to claim 1, characterized in that the upper end of the shaft housing (1) is provided with a housing positioning pin (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559561.2U CN212360648U (en) | 2020-07-31 | 2020-07-31 | Single-support balance shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021559561.2U CN212360648U (en) | 2020-07-31 | 2020-07-31 | Single-support balance shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212360648U true CN212360648U (en) | 2021-01-15 |
Family
ID=74131984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021559561.2U Active CN212360648U (en) | 2020-07-31 | 2020-07-31 | Single-support balance shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212360648U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750037A (en) * | 2020-07-31 | 2020-10-09 | 广西玉柴机器股份有限公司 | A single-supported balance shaft structure |
-
2020
- 2020-07-31 CN CN202021559561.2U patent/CN212360648U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750037A (en) * | 2020-07-31 | 2020-10-09 | 广西玉柴机器股份有限公司 | A single-supported balance shaft structure |
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