Transmission shaft of all-terrain vehicle

Abstract

The utility model provides a transmission shaft of an all-terrain vehicle, and belongs to the technical field of transmission shaft structures. According to the transmission shaft of the all-terrain vehicle, the plug welding hole is formed in the shaft tube, the plug welding point is welded at the plug welding hole, and the shaft tube and the telescopic sleeve are connected together through the plug welding point, so that the strength of a circumferential welding seam is improved on the basis of the circumferential welding seam at the joint of the original shaft tube and the telescopic sleeve; the problem that cracks occur to circumferential welding seams of a transmission shaft under the action of alternating stress in the prior art is solved. The transmission shaft of the all-terrain vehicle comprises a shaft tube, telescopic sleeves located at the two ends of the shaft tube, a universal joint connected with a drive axle and an engine transmission and a bearing used for supporting the shaft tube to rotate, and circumferential weld joints are welded to the joints of the shaft tube and the telescopic sleeves. A plug welding hole is formed in the shaft tube, a plug welding point is welded to the plug welding hole, and the shaft tube and the telescopic sleeve are connected together through the plug welding point.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission shaft structures, in particular to a transmission shaft of an all-terrain vehicle. Background Art

[0002] All-terrain vehicles are vehicles that can travel on any terrain and can move freely on terrain that is difficult for ordinary vehicles to maneuver. In my country, they are commonly known as beach buggies or farmer's carts. This type of vehicle has wide tires that can increase the contact area with the ground, generate greater friction and reduce the pressure of the vehicle on the ground, making it easy to travel on beaches, riverbeds, forest roads, streams, and harsh desert terrains.

[0003] As an important part of the automobile transmission system, the drive shaft undertakes the key task of transmitting power from the transmission to the drive wheels. The stability and reliability of its work directly affect the driving performance and service life of the car. It consists of axle tube, telescopic sleeve, universal joint, bearing and seal.

[0004] The shaft tube is the main body of the transmission shaft, made of high-strength steel or aluminum alloy to withstand the torque and bending moment generated during the transmission process. The shaft tube is usually hollow inside to reduce weight and facilitate the arrangement of other components.

[0005] The telescopic sleeve is located at both ends of the transmission shaft and is used to compensate for the length change caused by vibration and temperature changes during the driving process of the car. It is connected to the shaft tube through the spline sliding connection, allowing the length to be adjusted within a certain range.

[0006] Universal joints are important components that connect the drive shaft to the transmission or drive axle, allowing the angle between the two to change while transmitting torque. Bearings are used to support the rotational movement of the drive shaft and reduce frictional resistance. Seals are used to prevent lubricating oil leakage and dust from entering the interior of the drive shaft.

[0007] Because all-terrain vehicles often travel on rugged roads, their axle tubes are often subjected to more frequent alternating stresses than ordinary cars during the transmission process. Therefore, the welds between the axle tubes and telescopic sleeves will crack and even break under the action of such alternating stresses, which will have an adverse effect on the safety and working stability of the all-terrain vehicles. Utility Model Content

[0008] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide a drive shaft for an all-terrain vehicle, which is used to solve the problem in the prior art that because all-terrain vehicles often travel on rugged roads, their axle tubes are often subjected to more frequent alternating stresses than ordinary cars, so the welds of their axle tubes will crack and even break under the action of such alternating stresses.

[0009] To achieve the above-mentioned purpose and other related purposes, the utility model provides a transmission shaft of an all-terrain vehicle, including a shaft tube, telescopic sleeves located at both ends of the shaft tube and a universal joint connected to a drive axle and an engine transmission, a bearing for supporting the rotational movement of the shaft tube, a circumferential weld is welded at the connection between the shaft tube and the telescopic sleeve; a plug welding hole is opened on the shaft tube, a plug welding point is welded at the plug welding hole, and the shaft tube and the telescopic sleeve are connected together through the plug welding point.

[0010] Optionally, the two telescopic sleeves are respectively connected to two ends of the shaft tube through a spline structure.

[0011] Optionally, the two telescopic sleeves are connected to the two ends of the shaft tube by an inner spline and an outer spline respectively.

[0012] Optionally, a plurality of evenly arranged plug welding holes are respectively provided at both ends of the shaft tube.

[0013] Optionally, four plug welding holes are provided at either end of the shaft tube.

[0014] Optionally, the bearing is mounted on the transmission shaft via a pressure plate and a support plate that are relatively arranged.

[0015] Optionally, the pressure plate and the support plate are connected by bolts, and the bearing and the support plate are locked by screws.

[0016] As described above, the transmission shaft of an all-terrain vehicle of the utility model has at least the following beneficial effects:

[0017] 1. The drive shaft of the all-terrain vehicle is provided with a plug welding hole on the shaft tube, and a plug welding point is welded at the plug welding hole. The shaft tube and the telescopic sleeve are connected together through the plug welding point. On the basis of the original circumferential weld at the connection between the shaft tube and the telescopic sleeve, the connection effect of the plug welding point enhances the fatigue strength of the shaft tube and the telescopic sleeve. At the same time, the design of the plug welding hole also plays a role in dispersing the stress on the shaft tube, thereby improving the strength of the circumferential weld and avoiding the problem of cracks in the circumferential weld of the drive shaft under the action of alternating stress.

[0018] 2. The drive shaft of the all-terrain vehicle is designed with four evenly arranged plug welding holes through either end of the shaft tube. When the operator drills, he drills in from one side of the shaft tube and then drills out from the other side of the shaft tube to obtain two plug welding holes. That is, the operator drills twice to obtain four plug welding holes. This fully guarantees the subsequent welding of plug welding points at the plug welding holes and the connection strength of the shaft tube and the telescopic sleeve, while also reducing the operator's work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of a transmission shaft of an all-terrain vehicle of the present utility model.

[0020] Figure 2 Shown is a schematic diagram of a plug welding point of a transmission shaft of an all-terrain vehicle according to the present invention.

[0021] Figure 3 Shown is a schematic diagram of a plug welding hole of a transmission shaft of an all-terrain vehicle according to the utility model.

[0022] Figure 4 Shown is a schematic cross-sectional view of a plug welding hole of a transmission shaft of an all-terrain vehicle according to the present invention.

[0023] Component number description

[0024] Pressure plate 1, bearing 2, transmission shaft 3, screw 4, support plate 5, bolt 6, circumferential weld 7, plug welding point 8, external spline 9, shaft tube 10, internal spline 11, plug welding hole 12. DETAILED DESCRIPTION

[0025] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0026] See also Figures 1 to 4 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0027] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0028] See also Figure 2 and Figure 3The utility model provides a transmission shaft 3 of an all-terrain vehicle, comprising a shaft tube 10, telescopic sleeves at both ends of the shaft tube 10, and universal joints connected to a drive axle and an engine transmission, a bearing 2 for supporting the rotational movement of the shaft tube 10, a circumferential weld 7 is welded at the connection between the shaft tube 10 and the telescopic sleeve; a plug welding hole 12 is provided on the shaft tube 10, a plug welding point 8 is welded at the plug welding hole 12, and the shaft tube 10 and the telescopic sleeve are connected together through the plug welding point 8. On the basis of the original circumferential weld 7 at the connection between the shaft tube 10 and the telescopic sleeve, the connection effect of the plug welding point 8 enhances the fatigue strength of the shaft tube 10 and the telescopic sleeve, and at the same time, the design of the plug welding hole 12 also plays a role in dispersing the stress on the shaft tube 10, thereby improving the strength of the circumferential weld 7, and avoiding the problem of cracks in the circumferential weld 7 of the transmission shaft 3 under the action of alternating stress.

[0029] In another embodiment, see Figure 2 and Figure 3 The two telescopic sleeves are connected to the two ends of the shaft tube 10 through a spline structure. Compared with the flat key connection, the spline connection has a more uniform receiving force, less stress concentration at the tooth root, and a larger total contact area, so it can withstand a larger load; and the guiding performance is better.

[0030] In another embodiment, see Figure 2 and Figure 3 The two telescopic sleeves are connected to the two ends of the shaft tube 10 with an internal spline 11 and an external spline 9 respectively. Correspondingly, the two ends of the shaft tube 10 are external splines 9 and internal splines 11 respectively. Compared with the same spline structure at both ends, the design of this embodiment can better transfer the stress on the shaft tube 10.

[0031] In another embodiment, see Figure 3 A plurality of evenly arranged plug welding holes 12 are respectively provided at both ends of the shaft tube 10, thereby ensuring that the stress on the shaft tube 10 can be evenly dispersed. After the plug welding points 8 are welded to the plug welding holes 12, the fatigue strength of the entire circumferential surface of the shaft tube 10 can also be evenly enhanced.

[0032] In another embodiment, see Figure 3 and Figure 4 Four plug welding holes 12 are opened at either end of the shaft tube 10. When the operator drills, he drills in from one side of the shaft tube 10 and then drills out from the other side of the shaft tube 10 to obtain two plug welding holes 12, that is, the operator can obtain four plug welding holes 12 by drilling twice. While fully ensuring the subsequent welding of plug welding points 8 at the plug welding holes 12 and ensuring the connection strength between the shaft tube 10 and the telescopic sleeve, the operator's work intensity is reduced and the operator's work efficiency is improved.

[0033] In other embodiments, Figure 1 As shown, the bearing 2 is installed on the transmission shaft 3 through the relatively arranged pressure plate 1 and the support plate 5, the pressure plate 1 and the support plate 5 are connected by bolts 6, and the bearing 2 and the support plate 5 are locked by screws 4. The structure and connection method of this embodiment are simple and practical, and are convenient for the operator to install and the subsequent vehicle maintenance.

[0034] In summary, the utility model is designed that the shaft tube 10 is provided with a plug welding hole 12, the plug welding point 8 is welded at the plug welding hole 12, and the shaft tube 10 and the telescopic sleeve are connected together through the plug welding point 8. On the basis of the circumferential weld 7 at the connection between the original shaft tube 10 and the telescopic sleeve, the connection effect of the plug welding point 8 enhances the fatigue strength of the shaft tube 10 and the telescopic sleeve. At the same time, the design of the plug welding hole 12 also plays a role in dispersing the stress on the shaft tube 10, thereby improving the strength of the circumferential weld 7 and avoiding the transmission shaft 3 from being damaged during alternating stress. Under the action of force, the circumferential weld 7 has cracks; at the same time, through the optional design of opening four evenly arranged plug welding holes 12 at either end of the shaft tube 10, when the operator drills, he drills from one side of the shaft tube 10 and then drills out from the other side of the shaft tube 10, so that two plug welding holes 12 can be obtained, that is, the operator drills twice to obtain four plug welding holes 12, which fully guarantees the subsequent welding of plug welding points 8 at the plug welding holes 12, and ensures the connection strength of the shaft tube 10 and the telescopic sleeve, while also reducing the operator's work intensity. Therefore, the utility model effectively overcomes the shortcomings of the prior art and has a high industrial utilization value.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A transmission shaft of an all-terrain vehicle, comprising a shaft tube, telescopic sleeves at both ends of the shaft tube, a universal joint connected to a drive axle and an engine transmission, and a bearing for supporting the rotational movement of the shaft tube, characterized in that: A circumferential weld is welded at the connection between the shaft tube and the telescopic sleeve; A plug welding hole is provided on the shaft tube, a plug welding point is welded at the plug welding hole, and the shaft tube and the telescopic sleeve are connected together through the plug welding point.

2. The transmission shaft of an all-terrain vehicle according to claim 1, characterized in that: The two telescopic sleeves are respectively connected to two ends of the shaft tube through a spline structure.

3. The transmission shaft of an all-terrain vehicle according to claim 2, characterized in that: The two telescopic sleeves are connected to the two ends of the shaft tube by an inner spline and an outer spline respectively.

4. The transmission shaft of an all-terrain vehicle according to claim 1, characterized in that: Both ends of the shaft tube are respectively provided with a plurality of evenly arranged plug welding holes.

5. The transmission shaft of an all-terrain vehicle according to claim 4, characterized in that: Four plug welding holes are provided at either end of the shaft tube.

6. The transmission shaft of an all-terrain vehicle according to claim 1, characterized in that: The bearing is installed on the transmission shaft through a pressure plate and a supporting plate which are arranged oppositely.

7. The transmission shaft of an all-terrain vehicle according to claim 6, characterized in that: The pressing plate and the supporting plate are connected by bolts, and the bearing and the supporting plate are locked by screws.

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