CN210859536U - Balance stable engine crank - Google Patents
Balance stable engine crank Download PDFInfo
- Publication number
- CN210859536U CN210859536U CN201921515777.6U CN201921515777U CN210859536U CN 210859536 U CN210859536 U CN 210859536U CN 201921515777 U CN201921515777 U CN 201921515777U CN 210859536 U CN210859536 U CN 210859536U
- Authority
- CN
- China
- Prior art keywords
- bearing position
- connecting rod
- rod journal
- crank
- balance
- 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
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005121 nitriding Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a balanced stable formula engine crank throw, including connecting rod journal (11), bearing position (12) the lower extreme of bearing position is equipped with movable balance piece (13), is equipped with balanced heavy hole (14) of going on this movable balance piece, the appearance of bearing position bolt fastening face (15) on the bearing position is interior concave dish shape be equipped with nitrided layer (16) on the outer periphery surface of connecting rod journal. The utility model discloses can realize the change alone of activity type balancing piece, balanced heavy hole is in order to embody the dynamic balance effect of crank throw. The arrangement of the nitriding layer increases the wear resistance and hardness of the outer surface of the connecting rod journal. The bearing position bolt reinforcing surface is in an inwards concave disc shape, so that the fastening bolt with a connecting effect is installed, and the stability and the reliability of the crankshaft assembly and the crank action are ensured and further improved.
Description
Technical Field
The utility model relates to an engine drive disk assembly, concretely relates to engine crank.
Background
The crank assembly of the engine is a component of the crank assembly of the engine, the crank assembly of the engine generally includes front axle, crankshaft flange, multiple crank throw, multiple roller bearings, the crank assembly can bear the force that the tie rod transmits, and change it into the torque and export through the crank assembly, and drive other accessories on the engine to work. When the crankshaft assembly rotates, one of the key points is to ensure the dynamic balance of the crankshaft assembly, and when the dynamic balance of the crankshaft assembly exceeds the standard, the engine can be damaged. In the prior art, a balance block is fixedly connected to the lower end of a bearing position of a crank throw, and the whole weight of the crank throw is adjusted by drilling holes in the balance block, so that the dynamic balance of a crankshaft assembly is ensured.
However, in the actual use process, the accuracy of manual drilling is poor, the dynamic balance of the crankshaft is difficult to adjust after a drilling error, a new crank throw needs to be replaced, the operation difficulty of replacing the whole crank throw is high, time and labor are wasted, and the maintenance cost is high; when the number of the crank throws on the crankshaft assembly is large, when the rotating speed of the crankshaft assembly reaches the resonance rotating speed, the vibration quantity is increased, and the crankshaft assembly is greatly twisted and deformed, so that the normal work of the crankshaft assembly is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the deficiency of the background art, the utility model aims to solve the technical problem that a can better realize dynamic balance, the operation is stable, the reliable balanced stable formula engine crank of fastening is provided.
The purpose of the utility model is realized by adopting the following scheme: the balance stable engine crank comprises a connecting rod journal and a bearing position, wherein the lower end of the bearing position is provided with a movable balance block, the movable balance block is provided with a balance weight removing hole, the appearance of a bolt reinforcing surface of the bearing position on the bearing position is in a concave disc shape, and the outer peripheral surface of the connecting rod journal is provided with a nitride layer.
Adopt above-mentioned technical scheme, the lower extreme of the bearing position of this crank is through connecting the activity type balancing piece, if the condition of activity type balancing piece drilling error appears, only need carry on the activity type balancing piece change alone can, need not change whole crank, greatly reduced the degree of difficulty of repairing and can effectively reduce maintenance cost. The balance weight-removing hole on the movable balance block is used for reflecting the dynamic balance function of the crank throw. The arrangement of the nitriding layer increases the wear resistance and hardness of the outer surface of the connecting rod journal. The bearing position bolt reinforcing surface is in an inwards concave disc shape and is used for installing fastening bolts for connecting the front shaft, the crankshaft flange and the crank throw. Thereby ensuring and further improving the stability and reliability of the crankshaft assembly and the crank throw action.
Drawings
The invention is further described and illustrated with reference to the accompanying drawings and embodiments.
Fig. 1 is the structure schematic diagram of the balance stable engine crank of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is an enlarged schematic view of a mark a in fig. 2.
Fig. 4 is an enlarged schematic view of a mark B in fig. 2.
Detailed Description
As shown in fig. 1 and 2, the balance and stability type engine crank of the present invention comprises a connecting rod journal 11 and a bearing position 12, wherein a movable balance block 13 (for a split type movable installation) is installed at the lower end of the bearing position 12, a balance weight removing hole 14 (a plurality of balance weight removing holes) is provided on the movable balance block 13, the outer shape of a bolt reinforcing surface 15 of the bearing position on the bearing position 12 is an inward concave disk shape (i.e. a disk-shaped structure with a concave thickness of 0.005-0.015mm), as shown in fig. 2 to 4, a nitride layer 16 is provided on the outer peripheral surface of the connecting rod journal 11 (for increasing the outer surface wear resistance and hardness of the connecting rod journal, so that the operation is more stable and reliable). The bearing position bolt reinforcing surface 15 is used for installing fastening bolts for connecting the front shaft, the crankshaft flange and the crank throw.
Claims (1)
1. Balanced stable formula engine crank throw, including connecting rod journal (11), bearing position (12), its characterized in that: the movable balance block (13) is arranged at the lower end of the bearing position (12), a balance weight removing hole (14) is formed in the movable balance block (13), the bearing position bolt reinforcing surface (15) on the bearing position (12) is in a concave disc shape, and a nitride layer (16) is arranged on the outer peripheral surface of the connecting rod journal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515777.6U CN210859536U (en) | 2019-09-05 | 2019-09-05 | Balance stable engine crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921515777.6U CN210859536U (en) | 2019-09-05 | 2019-09-05 | Balance stable engine crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210859536U true CN210859536U (en) | 2020-06-26 |
Family
ID=71307001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921515777.6U Expired - Fee Related CN210859536U (en) | 2019-09-05 | 2019-09-05 | Balance stable engine crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210859536U (en) |
-
2019
- 2019-09-05 CN CN201921515777.6U patent/CN210859536U/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 |
Granted publication date: 20200626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |