CN112124069A - Intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicle - Google Patents
Intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicle Download PDFInfo
- Publication number
- CN112124069A CN112124069A CN202011004274.XA CN202011004274A CN112124069A CN 112124069 A CN112124069 A CN 112124069A CN 202011004274 A CN202011004274 A CN 202011004274A CN 112124069 A CN112124069 A CN 112124069A
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- aluminum alloy
- shaft
- spline shaft
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- transmission shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
- B60K17/24—Arrangements of mountings for shafting
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a middle support aluminum alloy transmission shaft for a medium and heavy commercial vehicle, which comprises an aluminum alloy shaft tube, wherein a middle spline shaft and an aluminum alloy universal joint fork are respectively welded at two ends of the aluminum alloy shaft tube, and the aluminum alloy universal joint fork is connected with a flange fork through a cross shaft; one side of the middle spline shaft is fixedly connected with the flange through a connecting piece; an intermediate bearing assembly is arranged between the intermediate spline shaft and the flange. The invention can meet the light-weight requirement of a vehicle type with a plurality of transmission shaft systems, thereby realizing the light-weight of the plurality of transmission shaft systems, simultaneously, the invention can ensure that the lightest weight meets the requirements of static torsional strength and fatigue life of the middle supporting aluminum alloy transmission shaft through the optimized design of the product structure, and can effectively improve the vibration characteristic of the transmission shaft system by improving the dynamic and static rigidity of the middle rubber, thereby further improving the comfort of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of production design of transmission shafts in automobile parts, and particularly relates to an intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicles.
Background
At present, an aluminum alloy transmission shaft structure on the market is mainly a transmission shaft assembly structure with a spline pair (see the attached drawing of the specification and shown in figure 1), and the effects of reducing the weight of a transmission shaft system by 15% -25% and reducing the oil consumption of the whole vehicle by 3% -5% can be realized; the method makes outstanding contribution to light weight, energy conservation and environmental protection of the whole vehicle.
However, the aluminum alloy transmission shaft with the structure can only be realized on a vehicle model with only a single aluminum alloy transmission shaft at present, and can only be realized on a few vehicle models. According to the incomplete statistics of the market, the transmission shaft systems of 80% of the existing vehicle types are all multi-transmission shaft systems, the popularization and application of the aluminum alloy transmission shaft with the structure are only used for lightening the medium-heavy commercial vehicle, the energy conservation and the environmental protection are greatly limited, and the lightweight requirements of the vehicle types with the multi-transmission shaft systems cannot be met.
Disclosure of Invention
In order to overcome the technical problems in the prior art, the invention provides an intermediate support aluminum alloy transmission shaft for a medium-heavy commercial vehicle, which can meet the requirement of lightening the vehicle type with a plurality of transmission shaft systems, thereby realizing the lightening of the plurality of transmission shaft systems.
In order to achieve the purpose, the invention provides the following technical scheme:
the middle support aluminum alloy transmission shaft for the medium and heavy commercial vehicle comprises an aluminum alloy shaft tube, wherein a middle spline shaft and an aluminum alloy universal joint fork are welded at two ends of the aluminum alloy shaft tube respectively, and the aluminum alloy universal joint fork is connected with a flange fork through a cross shaft; the method is characterized in that: one side of the middle spline shaft is fixedly connected with the flange through a connecting piece; an intermediate bearing assembly is arranged between the intermediate spline shaft and the flange.
Preferably, the intermediate support assembly comprises intermediate support oil seals on two sides, bearings are mounted inside the intermediate support oil seals, and the intermediate support oil seals and the bearings are respectively connected with the flange and the intermediate spline shaft in a matched manner; the outer parts of the middle supporting oil seals on the two sides are fixedly provided with middle supporting bearing seats; the inner part of the middle supporting bearing seat is fixedly connected with the bearing through an elastic retainer ring for a hole.
Preferably, in an embodiment of the present invention, the intermediate spline shaft is made of an aluminum alloy material or a steel material.
Preferably, in the embodiment of the present invention, when the intermediate spline shaft is made of an aluminum alloy material, a steel bushing is provided between the intermediate spline shaft and the intermediate support oil seal.
Preferably, the steel bushing is connected with the middle spline shaft in an interference fit manner.
Preferably, the aluminum alloy shaft tube is welded with the middle spline shaft and the aluminum alloy universal joint yoke by friction welding.
Preferably, the aluminum alloy shaft tube and the middle spline shaft are welded by friction welding; and the aluminum alloy shaft tube and the middle spline shaft are welded by adopting magnetic pulse.
Preferably, the connecting piece comprises a fixing nut and a split pin; the middle spline shaft is connected with the flange through a fixing nut, and the cotter pin is installed on the outer side of the fixing nut.
The invention has the following beneficial effects:
(1) the intermediate support aluminum alloy transmission shaft for the medium and heavy commercial vehicle can meet the requirement of light weight of a vehicle type with a plurality of transmission shaft systems, so that the light weight of the plurality of transmission shaft systems is realized.
(2) According to the intermediate support aluminum alloy transmission shaft for the medium and heavy commercial vehicle, the requirements of the intermediate support aluminum alloy transmission shaft on static torsional strength and fatigue life can be met with the minimum weight through the optimized design of the product structure; and the vibration characteristic of the transmission shaft system can be effectively improved by improving the dynamic and static rigidity of the middle rubber, so that the comfort of the whole vehicle is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a conventional transmission shaft assembly with a spline pair;
FIG. 2 is a schematic structural view of an intermediate support aluminum alloy transmission shaft for a heavy-duty commercial vehicle according to the present invention;
FIG. 3 is a schematic structural view of an intermediate support assembly according to the present invention;
fig. 4 is another structural view of the intermediate support aluminum alloy propeller shaft for heavy commercial vehicles according to the present invention.
The reference numbers shown in the figures are as follows: 1. an aluminum alloy shaft tube; 2. a middle spline shaft; 3. an aluminum alloy universal joint yoke; 4. a cross shaft; 5. a flange yoke; 6. a connecting member; 6.1, fixing a nut; 6.2, a cotter pin; 7. a flange; 8. an intermediate support assembly; 8.1, intermediate support oil seal; 8.2, elastic check rings for holes; 8.3, a middle supporting bearing seat; 8.4, a bearing; 8.5, middle supporting rubber; 8.6, steel lining.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 2 to 4, an embodiment of the invention provides an intermediate support aluminum alloy transmission shaft for a medium and heavy commercial vehicle, which specifically includes an aluminum alloy shaft tube 1 with a hollow structure, and a middle spline shaft 2 and an aluminum alloy universal joint yoke 3 are fixedly connected to two ends of the aluminum alloy shaft tube 1 respectively. Wherein, the aluminum alloy universal joint yoke 3 is connected with the flange yoke 5 through the cross shaft 4; one side of the middle spline shaft 2 is fixedly connected with a flange 7 through a connecting piece 6; an intermediate support assembly 8 is provided between the intermediate spline shaft 2 and the flange 7. In this embodiment, 6061-T6 is used for the aluminum alloy shaft tube 1, 6B10-T6 aluminum alloy material or 40Cr steel material is used for the intermediate spline shaft 2, 6B10-T6 is used for the aluminum alloy yoke 3, and 40Cr is used for the flange 7, and other materials are used.
Referring to fig. 2 to 3, in the present embodiment, the intermediate support assembly 8 includes intermediate support oil seals 8.1 on two sides, and a bearing 8.4 is installed inside the intermediate support oil seal 8.1, wherein the intermediate support oil seal 8.1 and the bearing 8.4 are respectively connected with the flange 7 and the intermediate spline shaft 2 in a matching manner. The outer parts of the middle supporting oil seals 8.1 on the two sides are fixedly provided with middle supporting bearing blocks 8.3, and the inner parts of the middle supporting bearing blocks 8.3 are fixedly connected with the bearings 8.4 through elastic retainer rings 8.2 for holes. Further optimizing this embodiment, the outside of middle supporting bearing seat 8.3 is passed through the vulcanization technology and is connected an organic whole with middle supporting rubber 8.5, can improve the dynamic and static rigidity of middle rubber through middle supporting rubber 8.5, can effectively improve the vibration characteristic of transmission shaft system to improve the travelling comfort of whole car. In this embodiment, the aluminum alloy transmission shaft with the structure of the intermediate support assembly 8 solves the problem that the existing intermediate support aluminum alloy transmission shaft product is lack, and meanwhile, the lightweight requirement of a vehicle model with a plurality of transmission shaft systems can be met, so that the lightweight of the plurality of transmission shaft systems is realized. Specifically, in the embodiment, three steel transmission shafts are replaced by two aluminum alloy transmission shafts (a single aluminum alloy transmission shaft with a middle support and a single aluminum alloy transmission shaft with a spline pair), the weight is reduced by 40%, and the weight of four steel transmission shafts (the transmission shaft system of the current commonly-used vehicle type is provided with four transmission shafts at most) is reduced by 60%.
Referring to fig. 2 to 3, in this embodiment, when the intermediate spline shaft 2 is made of an aluminum alloy material, a steel bushing 8.6 is arranged between the intermediate spline shaft 2 and the intermediate support oil seal 8.1, the steel bushing 8.6 is connected with the intermediate spline shaft 2 in an interference fit manner, and the outer surface of the steel bushing 8.6 is matched with the intermediate support oil seal 8.1, so as to improve the wear resistance of the aluminum alloy intermediate spline shaft 2, and solve the problem that the aluminum alloy material has poor wear resistance to cause damage to the oil seal, which further causes failure of the aluminum alloy transmission shaft; meanwhile, the steel bushing and the aluminum alloy material are matched at the edge by adopting a packaging process, so that the electrochemical corrosion of steel and aluminum is effectively avoided. In the embodiment, through the optimized design of the product structure, the static torsional strength and fatigue life requirements of the middle supporting aluminum alloy transmission shaft can be met with the minimum weight, and the vibration characteristics of the transmission shaft system can be effectively improved by improving the dynamic and static rigidity of the middle rubber, so that the comfort of the whole vehicle is further improved. In this embodiment, the intermediate bearing rubber 8.5 is made of rubber, and a damping groove (not shown) may be provided in the sealing member, which is beneficial to improve the damping characteristic of the intermediate bearing assembly 8.
Referring to fig. 2 to 4, in the present embodiment, the aluminum alloy shaft tube 1 and the aluminum alloy yoke 3 are welded by friction welding. The aluminum alloy shaft tube 1 and the middle spline shaft 2 are welded by friction welding or magnetic pulse welding. The flange 7 is fixedly connected with the middle spline shaft 2 through a connecting piece 6, and the first connection mode comprises the following two connection modes: the middle spline shaft 2 is connected with the flange 7 in a matching way through the structure size, and is locked by a gasket (not marked in the figure) and a hexagon head bolt, so that a middle supporting aluminum alloy transmission shaft is formed; the first one is: the middle spline shaft 2 is connected with the flange 7 in a matching mode through the structure and the size, the middle spline shaft 2 is connected with the flange 7 through a fixing nut 6.1, and the cotter pin 6.2 is installed on the outer side of the fixing nut 6.1, so that the middle supporting aluminum alloy transmission shaft is formed.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The middle support aluminum alloy transmission shaft for the medium and heavy commercial vehicle comprises an aluminum alloy shaft tube (1), wherein a middle spline shaft (2) and an aluminum alloy universal joint fork (3) are welded at two ends of the aluminum alloy shaft tube (1) respectively, and the aluminum alloy universal joint fork (3) is connected with a flange fork (5) through a cross shaft (4); the method is characterized in that: one side of the middle spline shaft (2) is fixedly connected with the flange (7) through a connecting piece (6); an intermediate bearing assembly (8) is arranged between the intermediate spline shaft (2) and the flange (7).
2. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 1, wherein: the middle supporting assembly (8) comprises middle supporting oil seals (8.1) on two sides, a bearing (8.4) is installed inside each middle supporting oil seal (8.1), and the middle supporting oil seals (8.1) and the bearing (8.4) are respectively connected with the flange (7) and the middle spline shaft (2) in a matched mode; the outer parts of the middle supporting oil seals (8.1) at two sides are fixedly provided with middle supporting bearing seats (8.3); the inner part of the middle supporting bearing seat (8.3) is fixedly connected with the bearing (8.4) through a hole by an elastic retainer ring (8.2).
3. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 1, wherein: the middle spline shaft (2) is made of an aluminum alloy material or a steel material.
4. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 3, wherein: when the middle spline shaft (2) is made of aluminum alloy materials, a steel lining (8.6) is arranged between the middle spline shaft (2) and the middle supporting oil seal (8.1).
5. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 4, wherein: and the steel bushing (8.6) is connected with the middle spline shaft (2) in an interference fit manner.
6. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 1, wherein: the aluminum alloy shaft tube (1) is welded with the middle spline shaft (2) and the aluminum alloy universal joint fork (3) by friction welding.
7. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 1, wherein: the aluminum alloy shaft tube (1) and the middle spline shaft (2) are welded by friction welding; the aluminum alloy shaft tube (1) and the middle spline shaft (2) are welded by adopting magnetic pulses.
8. The intermediate support aluminum alloy propeller shaft for medium and heavy commercial vehicles according to claim 1, wherein: the connecting piece (6) comprises a fixing nut (6.1) and a split pin (6.2); the middle spline shaft (2) is connected with the flange (7) through a fixing nut (6.1), and the cotter pin (6.2) is installed on the outer side of the fixing nut (6.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004274.XA CN112124069A (en) | 2020-09-22 | 2020-09-22 | Intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011004274.XA CN112124069A (en) | 2020-09-22 | 2020-09-22 | Intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112124069A true CN112124069A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011004274.XA Pending CN112124069A (en) | 2020-09-22 | 2020-09-22 | Intermediate support aluminum alloy transmission shaft for medium and heavy commercial vehicle |
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| Country | Link |
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| CN (1) | CN112124069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727904A (en) * | 2021-01-08 | 2021-04-30 | 万向钱潮传动轴有限公司 | Transmission shaft intermediate structure |
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| CN201739369U (en) * | 2009-08-25 | 2011-02-09 | 北汽福田汽车股份有限公司 | Transmission shaft and transmission system with same |
| CN102109002A (en) * | 2010-09-16 | 2011-06-29 | 杭州万向传动轴有限公司 | Novel adjustable dynamic balance transmission shaft |
| CN202851591U (en) * | 2012-10-31 | 2013-04-03 | 许昌远东传动轴股份有限公司 | Middle flange locking structure for transmission shaft |
| CN204127283U (en) * | 2014-07-22 | 2015-01-28 | 沃德(天津)传动有限公司 | A kind of speed reducer |
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Application publication date: 20201225 |