CN218266766U - Crankshaft structure with internal spline - Google Patents
Crankshaft structure with internal spline Download PDFInfo
- Publication number
- CN218266766U CN218266766U CN202222583237.XU CN202222583237U CN218266766U CN 218266766 U CN218266766 U CN 218266766U CN 202222583237 U CN202222583237 U CN 202222583237U CN 218266766 U CN218266766 U CN 218266766U
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- crankshaft
- internal spline
- bent axle
- connecting rod
- weight
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Abstract
The utility model discloses a bent axle structure with internal spline, including the bent axle body. At least one first weight reducing hole is formed in a connecting rod neck of the crankshaft body, and at least one second weight reducing hole is formed in the main shaft neck. Wherein, all seted up the oilhole on main journal, crank and the connecting rod neck, and each oilhole links to each other. Wherein, be provided with the internal spline in the bent axle major part, and the processing of internal spline leaves tool withdrawal groove. Therefore, the utility model discloses a bent axle structure with internal spline, simple structure is reasonable, can transmit bigger moment of torsion demand, adapts to various supporting demands, and very big reduction the weight of bent axle.
Description
Technical Field
The utility model relates to an engine technical field especially relates to a bent axle structure with internal spline.
Background
With the improvement of the requirements of the social and economic activities on the dynamic property, the economical efficiency, the adaptability and the like of the vehicle, the light weight, the safety, the applicability and the dynamic property of the vehicle and parts thereof become a promotion direction which gets a great attention.
The crankshaft is a key part for driving the internal combustion engine, and the crankshaft, the piston, the connecting rod and the flywheel together convert the vertical reciprocating motion of the internal combustion engine into the circular motion of the crankshaft, so that the power output is realized. The crankshaft generally consists of a main journal, a connecting rod journal, a crank, a balance weight, a front end and a rear end. A main journal, a connecting journal and a crank constitute a crank.
However, the existing crankshaft structure has a single function and is too heavy, and in order to meet the requirements of the existing engine for being lighter and more complex to complete, the existing crankshaft with the single function cannot meet the requirements of the engine for being complete and the requirements of the engine for being light in weight.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bent axle structure with internal spline, its simple structure is reasonable, can transmit bigger moment of torsion demand, adapts to various supporting demands, and very big reduction the weight of bent axle.
In order to achieve the above object, the utility model provides a bent axle structure with internal spline, including the bent axle body. At least one first weight reducing hole is formed in a connecting rod neck of the crankshaft body, and at least one second weight reducing hole is formed in the main journal. Wherein, all seted up the oilhole on main journal, crank and the connecting rod neck, and each oilhole links to each other. Wherein, be provided with the internal spline in the bent axle major part, and the processing of internal spline leaves tool withdrawal groove.
In one or more embodiments, at least one third weight-reducing hole is formed in the large end of the crankshaft.
In one or more embodiments, the number of first, second, and third weighted reducing holes is two.
In one or more embodiments, the diameter of the connecting journals is 33.5 millimeters, and the diameter of the main journals is 40 millimeters.
In one or more embodiments, the ratio of the diameter of the connecting journals to the diameter of the main journals is 0.83.
In one or more embodiments, the ratio of the wall thickness of the crank to the cylinder diameter is 0.2.
In one or more embodiments, the number of cranks is six.
Compared with the prior art, according to the utility model discloses a bent axle structure with internal spline, simple structure is reasonable, can transmit bigger moment of torsion demand, adapts to various supporting demands, and very big reduction the weight of bent axle.
Drawings
Fig. 1 is a front view schematically illustrating a crankshaft structure with an internal spline according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a crankshaft structure with an internal spline according to an embodiment of the present invention.
Description of the main reference numerals:
100-crankshaft body, 101-crankshaft small end, 102-main journal, 103-connecting rod journal, 104-crank, 105-oil hole, 106-crankshaft large end, 107-first weight reducing hole, 108-second weight reducing hole and 109-internal spline.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a front view structural diagram of a crankshaft structure with an internal spline according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional view of a crankshaft structure with internal splines according to an embodiment of the present invention.
As shown in fig. 1 to 2, a crankshaft structure with internal splines according to an embodiment of the present invention includes a crankshaft body 100. At least one first weight reducing hole 107 is formed in the connecting rod journal 103 of the crankshaft body 100, and at least one second weight reducing hole 108 is formed in the main journal 102. Wherein, the main journal 102, the crank 104 and the connecting rod journal 103 are all provided with oil holes 105, and the oil holes 105 are connected. Wherein, the crankshaft big end 106 is provided with an internal spline 109, and the processing of the internal spline 109 leaves a tool withdrawal groove.
In one or more embodiments, at least one third weight-reducing hole is formed in the crankshaft large end 106.
In one or more embodiments, the number of first, second, and third drop weight holes 107, 108, and third drop weight holes are all two.
In one or more embodiments, the diameter of the connecting journals 103 is 33.5 millimeters, and the diameter of the main journals 102 is 40 millimeters.
In one or more embodiments, the ratio of the diameter of the connecting journals 103 to the diameter of the main journals 102 is 0.83.
In one or more embodiments, the ratio of the wall thickness to the cylinder diameter of the crank 104 is 0.2.
In one or more embodiments, the number of cranks 104 is six.
In practical application, the utility model discloses a crankshaft structure with internal spline includes bent axle body 100, and bent axle body 100 includes: the small crankshaft head 101 is provided with threads for connecting an engine pulley at the front end, a main journal 102 and a connecting journal 103. The crank 104, the main journal 102 and the connecting rod journal 103 are provided with oil holes 105, and the oil holes 105 are connected to meet the requirement of crankshaft bearing bush lubrication. Two first weight reducing holes 107 are formed in the connecting rod journal 103, a second weight reducing hole 108 is formed in the main journal 102, and two third weight reducing holes are formed in the crankshaft large end 106.
Meanwhile, the internal spline 109 is arranged in the large end 106 of the crankshaft, and a tool withdrawal groove is reserved for machining the internal spline 109, so that the machining of the internal spline 109 is facilitated. The internal spline 109 is connected with the external spline and can meet various torque requirements.
The diameter of the connecting rod neck 103 is 33.5 mm, the diameter of the main journal 102 is 40 mm, and the ratio is 0.83. With the main journals 102 unchanged, the journals 103 have already reached the limit value for the ratio, the journals 103 of the crankshaft being the lightest in mass. Meanwhile, two weight reducing holes are formed in the connecting rod neck 103, so that the weight of the crankshaft is greatly reduced. Meanwhile, a long weight reducing hole is machined in the middle of the crankshaft, namely the main journal 102, and the weight of the crankshaft is greatly reduced.
The crank 104 wall thickness is at its thinnest at equilibrium, with a ratio to the cylinder diameter of 0.2. These measures all make the weight of the crankshaft achieve the purpose of light weight.
In a word, the utility model discloses a bent axle structure with internal spline has following beneficial effect:
1. the structure is simple and reasonable;
2. the crankshaft is provided with an internal spline 109 structure, so that a larger torque requirement can be transmitted and various matching requirements can be met;
3. the crankshaft is provided with the weight reducing hole, so that the weight of the crankshaft is greatly reduced, and the engine meets the requirement of light weight;
4. the ratio of the diameter of the crankshaft connecting rod journal 103 to the diameter of the main journal 102 is 0.8-0.9, and the ratio of the wall thickness of the crank 104 to the cylinder diameter is 0.2, so that the crankshaft is lighter;
5. light weight and good adaptability.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the invention and various alternatives and modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A crankshaft structure with an internal spline comprises a crankshaft body and is characterized in that at least one first weight reducing hole is formed in a connecting rod neck of the crankshaft body, and at least one second weight reducing hole is formed in a main journal;
oil holes are formed in the main journal, the crank and the connecting rod journal, and the oil holes are connected;
the crankshaft is provided with an internal spline in a big end, and a tool withdrawal groove is reserved in the machining of the internal spline.
2. The internally splined crankshaft structure of claim 1, wherein said crankshaft bull nose has at least one third weight reducing hole therein.
3. The internally splined crankshaft structure of claim 2, wherein the number of first and third weight reducing holes is two.
4. The internally splined crankshaft structure of claim 1, wherein the connecting journals have a diameter of 33.5 mm and the main journals have a diameter of 40 mm.
5. The internally splined crankshaft structure of claim 1, wherein the ratio of the diameter of the connecting rod journal to the diameter of the main journal is 0.83.
6. The internally splined crankshaft structure of claim 1, wherein said crank has a wall thickness to bore ratio of 0.2.
7. The internally splined crankshaft structure of claim 1 wherein said cranks are six in number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583237.XU CN218266766U (en) | 2022-09-28 | 2022-09-28 | Crankshaft structure with internal spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583237.XU CN218266766U (en) | 2022-09-28 | 2022-09-28 | Crankshaft structure with internal spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218266766U true CN218266766U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222583237.XU Active CN218266766U (en) | 2022-09-28 | 2022-09-28 | Crankshaft structure with internal spline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218266766U (en) |
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2022
- 2022-09-28 CN CN202222583237.XU patent/CN218266766U/en active Active
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