Duplex transmission shaft assembly

Abstract

The utility model relates to the technical field of transmission shafts, and discloses a duplex transmission shaft assembly which comprises a front transmission shaft, one end of the front transmission shaft is fixedly connected with a front universal joint, one end of the front universal joint is fixedly connected with a middle shaft, a dustproof structure is arranged outside the middle shaft, and the dustproof structure comprises a first dustproof plate. The first dustproof plate is located outside the intermediate shaft, two ends of the first dustproof plate are fixedly connected with two fixing seats, the interiors of the fixing seats are in threaded connection with bolts, one ends of the bolts are in threaded connection with nuts, and the two ends of the first dustproof plate are connected with second dustproof plates through the fixing seats, the bolts and the nuts. According to the utility model, the detachable dustproof plate is utilized, so that the spline shaft can be quickly installed and fixed, the spline shaft is protected, the spline shaft can be conveniently disassembled and maintained in the later period, and the spline shaft and the sliding area of the spline housing are sealed to form a closed mechanism, thereby better preventing dust.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft technology, and in particular to a double-drive shaft assembly. Background Technology

[0002] A double driveshaft assembly is a mechanical device used for power transmission in vehicles. It consists of two intermediate driveshafts connected in series by two sets of universal joints. It is used to connect the non-collinear transmission output shaft and the drive axle input shaft. The double universal joint structure compensates for large-angle offsets and axial displacements. It is suitable for the chassis transmission systems of heavy-duty commercial vehicles and off-road vehicles.

[0003] The existing double-drive shaft assembly has a simple structure, requires complicated operation to disassemble the spline shaft, is inconvenient for later maintenance, and the spline shaft is prone to dust accumulation when the sealant of the double-drive shaft assembly is damaged, resulting in poor dust prevention and damage to the spline shaft.

[0004] Therefore, those skilled in the art have provided a double-drive shaft assembly to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a double-drive shaft assembly. This assembly features a removable dustproof plate, which facilitates the disassembly and maintenance of the spline shaft. It also seals the sliding area of ​​the spline shaft and spline sleeve, forming a closed mechanism for better dust protection.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A double-drive shaft assembly includes a front drive shaft, one end of which is fixedly connected to a front universal joint, one end of which is fixedly connected to an intermediate shaft, the intermediate shaft having a dustproof structure on its exterior, the end of the intermediate shaft away from the front universal joint being fixedly connected to a rear universal joint, and one end of the rear universal joint being fixedly connected to a rear drive shaft.

[0008] The dustproof structure includes a first dustproof plate located outside the intermediate shaft. Two fixing seats are fixedly connected to both ends of the first dustproof plate. Bolts are threaded inside the fixing seats, and nuts are threaded to one end of the bolts. A second dustproof plate is connected to both ends of the first dustproof plate through the fixing seats, bolts, and nuts.

[0009] The above technical solution sets up a dustproof structure, using bolts and nuts to fix the first and second dustproof plates to the outside of the intermediate shaft. This not only protects the splined shaft from dust but also makes disassembly simple, facilitating the disassembly and maintenance of the splined shaft in the future.

[0010] Furthermore, the intermediate shaft includes a spline shaft and a spline sleeve, which are engaged and connected. One end of the spline shaft is provided with a groove, and two fixing blocks are engaged and connected inside the groove. One of the fixing blocks is fixedly connected to the first dustproof plate, and the other fixing block is fixedly connected to the second dustproof plate.

[0011] The above technical solution allows the fixing blocks of the first and second dustproof plates to be inserted into the slots of the spline shaft, thereby enhancing the stability between the spline shaft and the dustproof structure.

[0012] Furthermore, a dustproof strip is provided inside the slot, and one side of the dustproof strip is engaged with the fixing block;

[0013] The above technical solution enhances the airtightness between the spline shaft and the dustproof structure by setting a dustproof strip.

[0014] Furthermore, both the first dustproof plate and the second dustproof plate are provided with sliding grooves inside, and sliding blocks slide inside the sliding grooves. One side of the sliding block is fixedly connected to the spline sleeve.

[0015] By using the above technical solution, the sliding block slides in the sliding groove, so that when the spline shaft slides inside the spline sleeve, the dustproof structure can protect the spline shaft and prevent it from being contaminated and damaged.

[0016] Furthermore, two sliding forks are fixedly connected to one end of both the spline shaft and the spline sleeve, wherein two of the sliding forks are fixedly connected to the front universal joint, and the other two sliding forks are fixedly connected to the rear universal joint.

[0017] The above technical solution utilizes a sliding fork and universal joint for fixed connection, simplifying the structure and improving machining efficiency.

[0018] This utility model has the following beneficial effects:

[0019] This utility model proposes a double-linked drive shaft assembly. By setting a dustproof structure and using a detachable dustproof plate, it can be quickly installed and fixed, protecting the spline shaft while facilitating its later disassembly and maintenance. It also seals the sliding area of ​​the spline shaft and spline sleeve, forming a closed mechanism, thereby better preventing dust and preventing damage caused by dust accumulation during the sliding of the spline shaft. Attached Figure Description

[0020] Figure 1 This is a perspective view of a double-drive shaft assembly proposed in this utility model;

[0021] Figure 2 An exploded view of a double-drive shaft assembly proposed in this utility model;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of a dustproof structure for a double-linked drive shaft assembly proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the intermediate shaft structure of a double-linked drive shaft assembly proposed in this utility model.

[0025] Legend:

[0026] 1. Front drive shaft; 2. Rear drive shaft; 3. Front universal joint; 4. Rear universal joint; 5. Dustproof structure; 501. First dustproof plate; 502. Fixed base; 503. Sliding groove; 504. Second dustproof plate; 505. Bolt; 506. Nut; 507. Fixed block; 6. Intermediate shaft; 601. Splined shaft; 602. Splined sleeve; 603. Sliding fork; 7. Slot; 8. Dustproof strip; 9. Sliding block. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Reference Figure 1-5 One specific embodiment provided by this utility model:

[0029] A double-drive shaft assembly includes a front drive shaft 1, with a front universal joint 3 fixedly connected to one end of the front drive shaft 1, an intermediate shaft 6 fixedly connected to one end of the front universal joint 3, a dustproof structure 5 provided on the outside of the intermediate shaft 6, a rear universal joint 4 fixedly connected to the end of the intermediate shaft 6 away from the front universal joint 3, and a rear drive shaft 2 fixedly connected to one end of the rear universal joint 4. The dustproof structure 5 includes a first dustproof plate 501 located outside the intermediate shaft 6, with two fixed seats 502 fixedly connected to both ends of the first dustproof plate 501. Bolts 505 are threaded into the interior of the fixed seats 502, with one end of the bolts 505 threaded. A nut 506 is connected to the first dustproof plate 501. The two ends of the first dustproof plate 501 are connected to a second dustproof plate 504 via a fixing seat 502, bolts 505, and nuts 506. A dustproof structure 5 is provided. The first dustproof plate 501 and the second dustproof plate 504 are fixed to the outside of the intermediate shaft 6 using bolts 505 and nuts 506. This provides dust protection for the splined shaft 601 while also allowing for easy disassembly and maintenance. The intermediate shaft 6 includes a splined shaft 601 and a splined sleeve 602, which are engaged. One end of the splined shaft 601 has a groove 7, inside which two... There are two fixing blocks 507, one of which is fixedly connected to the first dustproof plate 501 and the other is fixedly connected to the second dustproof plate 504. The fixing blocks 507 of the first and second dustproof plates 501 and 504 are engaged with the slots 7 of the spline shaft 601, strengthening the stability between the spline shaft 601 and the dustproof structure 5. A dustproof strip 8 is provided inside the slot 7, with one side of the dustproof strip 8 engaging with the fixing block 507. The dustproof strip 8 enhances the airtightness between the spline shaft 601 and the dustproof structure 5. Both the first and second dustproof plates 501 and 504 have sliding grooves 50. 3. A sliding block 9 slides inside the sliding groove 503. One side of the sliding block 9 is fixedly connected to the spline sleeve 602. By using the sliding block 9 to slide in the sliding groove 503, the dustproof structure 5 can protect the spline shaft 601 from contamination and damage when it slides inside the spline sleeve 602. Two sliding forks 603 are fixedly connected to one end of both the spline shaft 601 and the spline sleeve 602. Two sliding forks 603 are fixedly connected to the front universal joint 3, and the other two sliding forks 603 are fixedly connected to the rear universal joint 4. The fixed connection between the sliding forks 603 and the universal joint simplifies the structure and improves machining efficiency.

[0030] Working principle: When using this double-shaft drive assembly, insert the splined shaft 601 of the intermediate shaft 6 into the splined sleeve 602, and then snap the fixing blocks 507 of the first dustproof plate 501 and the second dustproof plate 504 into the slot 7 at one end of the splined shaft 601 for initial positioning and fixation. Then, thread the bolt 505 through the fixing seat 502 and connect it with the nut 506 to fix the first dustproof plate 501 and the second dustproof plate 504 for secondary fixation. When the double-shaft drive assembly is running, the sliding block 9 of the splined sleeve 602 slides in the sliding groove 503 of the first dustproof plate 501 and the second dustproof plate 504, thereby sealing the sliding area of ​​the splined shaft 601 and the splined sleeve 602 to form a sealed mechanism, thus better preventing dust. When the splined shaft 601 needs to be disassembled for maintenance, simply reverse the operation, which is simple and convenient.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-drive shaft assembly, comprising a front drive shaft (1), characterized in that: One end of the front drive shaft (1) is fixedly connected to a front universal joint (3), one end of the front universal joint (3) is fixedly connected to an intermediate shaft (6), the outside of the intermediate shaft (6) is provided with a dustproof structure (5), the end of the intermediate shaft (6) away from the front universal joint (3) is fixedly connected to a rear universal joint (4), and one end of the rear universal joint (4) is fixedly connected to a rear drive shaft (2). The dustproof structure (5) includes a first dustproof plate (501), which is located outside the intermediate shaft (6). Both ends of the first dustproof plate (501) are fixedly connected to two fixing seats (502). The fixing seats (502) are internally threaded with bolts (505). One end of the bolts (505) is threaded with a nut (506). The two ends of the first dustproof plate (501) are connected to a second dustproof plate (504) through the fixing seats (502), bolts (505) and nuts (506).

2. The double-drive shaft assembly according to claim 1, characterized in that: The intermediate shaft (6) includes a spline shaft (601) and a spline sleeve (602), which are engaged and connected.

3. A double-drive shaft assembly according to claim 2, characterized in that: One end of the spline shaft (601) is provided with a slot (7), and two fixing blocks (507) are engaged inside the slot (7). One of the fixing blocks (507) is fixedly connected to the first dustproof plate (501), and the other fixing block (507) is fixedly connected to the second dustproof plate (504).

4. A double-drive shaft assembly according to claim 3, characterized in that: The card slot (7) is provided with a dustproof strip (8).

5. A double-drive shaft assembly according to claim 4, characterized in that: One side of the dustproof strip (8) is engaged with the fixing block (507).

6. A double-drive shaft assembly according to claim 2, characterized in that: The first dustproof plate (501) and the second dustproof plate (504) are both provided with sliding grooves (503), and sliding blocks (9) slide inside the sliding grooves (503).

7. A double-drive shaft assembly according to claim 6, characterized in that: One side of the sliding block (9) is fixedly connected to the spline sleeve (602).

8. A double-drive shaft assembly according to claim 2, characterized in that: Two sliding forks (603) are fixedly connected to one end of the spline shaft (601) and the spline sleeve (602), wherein two of the sliding forks (603) are fixedly connected to the front universal joint (3), and the other two sliding forks (603) are fixedly connected to the rear universal joint (4).

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