CN212055477U - Lightweight crankshaft - Google Patents
Lightweight crankshaft Download PDFInfo
- Publication number
- CN212055477U CN212055477U CN202020267578.4U CN202020267578U CN212055477U CN 212055477 U CN212055477 U CN 212055477U CN 202020267578 U CN202020267578 U CN 202020267578U CN 212055477 U CN212055477 U CN 212055477U
- Authority
- CN
- China
- Prior art keywords
- crank arm
- eccentric
- sliding groove
- balance
- seat
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a lightweight bent axle, including main journal, rod journal and set up the crank arm subassembly between the two, the crank arm subassembly includes the crank arm and sets up the balancing piece in crank arm one end. One side of the crank arm is provided with a boss part, the boss part is provided with a sliding groove extending along the length direction of the crank arm, and an eccentric seat is arranged in the sliding groove and is in sliding fit with the eccentric seat; a central shaft hole is formed in the eccentric seat, and the main journal penetrates through and is fixed in the central shaft hole; two ends of the sliding groove are respectively provided with an eccentric adjusting hole penetrating through the inside of the sliding groove, each eccentric adjusting hole is in threaded connection with an eccentric adjusting screw, and the inner ends of the two eccentric adjusting screws are respectively abutted against two opposite end faces of the eccentric seat. The structure can adjust the eccentric balance and effectively ensure the integral balance of the crankshaft.
Description
Technical Field
The utility model relates to a bent axle technical field especially relates to a lightweight bent axle.
Background
Existing lightweight crankshafts typically include a crank arm assembly including a main journal, a connecting rod journal, and a weight disposed therebetween, wherein the crank arm assembly includes a crank arm and a weight disposed at one end of the crank arm. In the prior art, the crank arm is usually of an integrally formed structure, and the connecting position of the crank arm and the main journal is also fixed. Due to various situations such as machining precision, use abrasion and the like, the balance degree of the whole crankshaft is greatly reduced, and accordingly scrapping is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome above-mentioned problem, and provide a lightweight bent axle that can change the eccentric balanced condition in a flexible way.
The technical scheme of the utility model is that: a lightweight bent axle, including main journal, rod journal and set up the crank arm subassembly between the two, the crank arm subassembly includes the crank arm and sets up the balancing piece in crank arm one end, its characterized in that: one side of the crank arm is provided with a boss part, the boss part is provided with a sliding groove extending along the length direction of the crank arm, and an eccentric seat is arranged in the sliding groove and is in sliding fit with the eccentric seat; a central shaft hole is formed in the eccentric seat, and the main journal penetrates through and is fixed in the central shaft hole; the two ends of the sliding groove are respectively provided with an eccentric adjusting hole penetrating through the inside of the sliding groove, each eccentric adjusting hole is in threaded connection with an eccentric adjusting screw, and the inner ends of the two eccentric adjusting screws are respectively abutted against the two opposite end faces of the eccentric seat.
Borrow by above-mentioned structure, the utility model discloses can be when the bent axle is unbalanced, through adjusting the position of eccentric seat in the spout and change the position of main journal on the crank arm, reach and change the eccentric distance and guarantee balanced purpose. When the eccentric seat is adjusted, the eccentric seat is tightly abutted and positioned at a certain position through the thread matching lengths of the two eccentric adjusting screws in the corresponding eccentric adjusting holes.
Further, lightweight bent axle in, the balancing piece be fan-shaped and with crank arm integrated into one piece, the machine-shaping of being convenient for.
Further, lightweight bent axle in, a plurality of balance adjustment holes have been seted up to the symmetry on the extrados of balancing piece, the spiro union has balance adjustment screw in the balance adjustment hole, can change the balance according to balance adjustment screw's quantity increase and decrease.
Further, among the lightweight bent axle, the central line of balancing piece and spout follow length direction's central line coincidence.
Further, lightweight bent axle in, a plurality of lightening holes have been seted up to the symmetry on the balancing piece, reduce holistic weight.
The utility model has the advantages that:
the utility model discloses simple structure, reasonable in design can freely adjust eccentric seat along spout length direction's sliding under various unbalance operating modes such as bent axle precision is low, wearing and tearing, changes the main journal in the eccentricity and the position of crank arm component in a flexible way, effectively guarantees the holistic balance of bent axle, improves its performance, and adaptability is wider.
Drawings
Fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic structural view of the crank arm assembly of the present invention.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings:
referring to fig. 1 and 2, the lightweight crankshaft according to the present embodiment includes a main journal 1, a connecting rod journal 2, and a crank arm assembly disposed therebetween, and the crank arm assembly includes a crank arm 3 and a weight 4 disposed at one end of the crank arm. The balance weight 4 is fan-shaped and is integrally formed with the crank arm 3. The balance weight 4 is symmetrically provided with a plurality of lightening holes 5. A plurality of balance adjusting holes are symmetrically formed in the outer arc surface of the balance block 4, and balance adjusting screws 6 are screwed in the balance adjusting holes.
One side of the crank arm 3 is provided with a boss part 7, the boss part 7 is provided with a sliding groove 8 extending along the length direction, and the center line of the balance block 4 is superposed with the center line of the sliding groove 8 along the length direction. An eccentric seat 9 is arranged in the sliding groove 8 and is in sliding fit with the sliding groove; a central shaft hole is formed in the eccentric seat 9, and the main journal 1 penetrates through and is fixed in the central shaft hole. Two ends of the sliding chute 8 are respectively provided with an eccentric adjusting hole 10 penetrating through the inside of the sliding chute, each eccentric adjusting hole 10 is in threaded connection with an eccentric adjusting screw 11, and the inner ends of the two eccentric adjusting screws 11 are respectively abutted against two opposite end faces of the eccentric seat 9.
When the two eccentric adjusting screws 11 are respectively loosened outwards, the eccentric seat 9 and the main journal 1 can slide to a certain position along the sliding groove 8, so that the whole crankshaft is restored to a balance position, and then the two eccentric adjusting screws 11 are respectively screwed inwards to press the eccentric seat 9, thereby achieving the purpose of positioning.
The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a lightweight bent axle, includes main journal, connecting rod journal and sets up the crank arm assembly between the two, the crank arm assembly includes the crank arm and sets up the balancing piece in crank arm one end, its characterized in that: one side of the crank arm is provided with a boss part, the boss part is provided with a sliding groove extending along the length direction of the crank arm, and an eccentric seat is arranged in the sliding groove and is in sliding fit with the eccentric seat; a central shaft hole is formed in the eccentric seat, and the main journal penetrates through and is fixed in the central shaft hole; the two ends of the sliding groove are respectively provided with an eccentric adjusting hole penetrating through the inside of the sliding groove, each eccentric adjusting hole is in threaded connection with an eccentric adjusting screw, and the inner ends of the two eccentric adjusting screws are respectively abutted against the two opposite end faces of the eccentric seat.
2. The lightweight crankshaft according to claim 1, characterized in that: the balance weight is fan-shaped and is integrally formed with the crank arm.
3. The lightweight crankshaft according to claim 2, characterized in that: a plurality of balance adjusting holes are symmetrically formed in the outer arc surface of the balance block, and balance adjusting screws are screwed in the balance adjusting holes.
4. The lightweight crankshaft according to claim 1, characterized in that: the center line of the balance block coincides with the center line of the sliding groove in the length direction.
5. The lightweight crankshaft according to claim 1, characterized in that: a plurality of lightening holes are symmetrically formed in the balance block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267578.4U CN212055477U (en) | 2020-03-06 | 2020-03-06 | Lightweight crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020267578.4U CN212055477U (en) | 2020-03-06 | 2020-03-06 | Lightweight crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055477U true CN212055477U (en) | 2020-12-01 |
Family
ID=73531121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020267578.4U Expired - Fee Related CN212055477U (en) | 2020-03-06 | 2020-03-06 | Lightweight crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212055477U (en) |
-
2020
- 2020-03-06 CN CN202020267578.4U patent/CN212055477U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201201 |