CN2900923Y - Motorcycle tappet engine crank link rod assembly - Google Patents
Motorcycle tappet engine crank link rod assembly Download PDFInfo
- Publication number
- CN2900923Y CN2900923Y CN 200620002263 CN200620002263U CN2900923Y CN 2900923 Y CN2900923 Y CN 2900923Y CN 200620002263 CN200620002263 CN 200620002263 CN 200620002263 U CN200620002263 U CN 200620002263U CN 2900923 Y CN2900923 Y CN 2900923Y
- Authority
- CN
- China
- Prior art keywords
- crank
- bob
- connecting rod
- weight
- rod assembly
- 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
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a motorbike tappet motor crank connecting rod assembly, comprising a left crank, a right crank and the bob-weight, the distance of left crank bob-weight and right crank bob-weight A is equal to 14-16mm, the best condition is 15mm, the distance of the left crank bob-weight and right crank bob-weight A is added to 14mm- 16mm, the best condition is 15mm from 12mm by the utility model motorbike tappet motor crank connecting rod assembly, the counter bob-weight and the cost can be highly reduced, thereby, secondary balancing problem due to the cylinder connecting rod driving can be improved. The test shows that the crankshaft bearing force of the crank connecting rod is around 3500N due to the bob-weight caused disbalance, the axially force in the cylinder is in the range of -2000N to +2000N, the bearing force is substantial reduced, the reliability and the service life are improved, meanwhile the disbalance rate is around 38%.
Description
Technical field
The utility model relates to a kind of engine components, relates to a kind of motorcycle tappet engine crank-connecting rod assembly particularly.
Background technique
One counterweight respectively is set on the left and right sides crank of tappet engine crank-connecting rod assembly usually, is used for the uneven centrifugal force and the centrifugal moment of balanced engine crankshaft, also transferable a part of reciprocal inertia force.Existing left and right sides crank balance counterweight adopts dynamic balance method setting for many years always, as being generally 12mm for the distance between the crank counterbalance of the motorcycle left and right sides, but the imbalance that this kind counterweight causes makes the crankshaft bearing of crank-connecting rod stressed up to ± 6000N, unbalance factor is about 25%, therefore how to reduce the working life that crankshaft bearing is stressed, improve bearing, improving unbalance factor is the problem that people press for solution.
The model utility content
The purpose of this utility model is at the problems referred to above, provide a kind of enforcement simple, transform easily, can effectively reduce the motorcycle tappet engine crank-connecting rod assembly that crankshaft bearing is stressed, improve bearing life.
For achieving the above object, the technical solution of the utility model is: a kind of motorcycle tappet engine crank-connecting rod assembly, comprise left and right sides crank and counterweight thereof, and the distance between the crank counterweight of the described left and right sides is A=14～16mm.
Distance between the crank counterweight of the described left and right sides is A=15mm.
Because the utility model motorcycle tappet engine crank-connecting rod assembly increases to 14～16mm with the distance A value between the crank counterweight of the left and right sides by 12mm, preferred values 15mm alleviates counterweight greatly, and cost of material also reduces.After doing to improve like this, also improve the secondary balancing problem of bringing because of the piston rod driving greatly, show that after tested the imbalance that this kind counterweight causes makes that the crankshaft bearing of crank-connecting rod is stressed and be ± 3500N, and the power on the cylinder block axial direction about-2000N～+ the 2000N scope.Shaft strength significantly reduces, and reliability and life-span improve.Unbalance factor is about 38% simultaneously.
Gap between the crank of the described left and right sides is 12mm.Adopt this size crank-connecting rod assembly, only need improve, and connecting rod is also with identical originally, improve easily, reforming cost is low counterweight part.
Description of drawings
Fig. 1 is the sectional view of the utility model motorcycle tappet engine crank-connecting rod assembly.
Embodiment
With reference to Fig. 1, motorcycle tappet engine crank-connecting rod assembly of the present utility model, comprise bent axle 7, left crank 2, right crank 3 and run through the crank pin 4 of left and right sides crank, connecting rod 1 is enclosed within on the crank pin 4, between connecting rod 1 and crank pin 4, be provided with needle bearing 5, crank pin 4 hollows form oil duct, being provided with the oilhole that leads to crank pin 4 surfaces on oil duct is used to needle bearing 5 that lubricant oil is provided, the above-mentioned oil duct grease channel interior with being arranged on bent axle is communicated with, and described crank pin oil duct both sides are by oil sealing 6 shutoff.Distance between the left and right sides crank 2,3 is 12mm, and the distance A between the left and right sides crank counterweight 8 is 15mm.
Claims (3)
1. a motorcycle tappet engine crank-connecting rod assembly comprises left and right sides crank and counterweight thereof, it is characterized in that: the distance between the crank counterweight of the described left and right sides is A=14～16mm.
2. motorcycle tappet engine crank-connecting rod assembly according to claim 1 is characterized in that: the distance between the crank counterweight of the described left and right sides is A=15mm.
3. motorcycle tappet engine crank-connecting rod assembly according to claim 1, it is characterized in that: the gap between the crank of the described left and right sides is 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002263 CN2900923Y (en) | 2006-02-20 | 2006-02-20 | Motorcycle tappet engine crank link rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620002263 CN2900923Y (en) | 2006-02-20 | 2006-02-20 | Motorcycle tappet engine crank link rod assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2900923Y true CN2900923Y (en) | 2007-05-16 |
Family
ID=38085086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620002263 Expired - Fee Related CN2900923Y (en) | 2006-02-20 | 2006-02-20 | Motorcycle tappet engine crank link rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2900923Y (en) |
-
2006
- 2006-02-20 CN CN 200620002263 patent/CN2900923Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 |