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CN-224229121-U - Duplex transmission shaft assembly

CN224229121UCN 224229121 UCN224229121 UCN 224229121UCN-224229121-U

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, wherein 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, the outer part of the middle shaft is provided with a dustproof structure, the dustproof structure comprises a first dustproof plate, the first dustproof plate is positioned outside the middle shaft, two ends of the first dustproof plate are fixedly connected with two fixing seats, the inner threads of the fixing seats are connected with bolts, one end of each bolt is connected with a nut in a threaded manner, and two ends of the first dustproof plate are connected with a second dustproof plate through the fixing seats, the bolts and the nuts. According to the utility model, the detachable dust-proof plate is utilized to rapidly install and fix, so that the spline shaft is protected, the later-stage disassembly and maintenance of the spline shaft are facilitated, and the sliding area of the spline shaft and the spline sleeve is sealed to form a sealing mechanism, so that dust is better prevented.

Inventors

  • CHEN XIAOSHENG
  • GUO HONGTAO
  • TAO JIANQIU

Assignees

  • 浙江得川汽车部件股份有限公司

Dates

Publication Date
20260512
Application Date
20250701

Claims (8)

  1. 1. The duplex transmission shaft assembly comprises a front transmission shaft (1) and is characterized in that one end of the front transmission shaft (1) is fixedly connected with a front universal joint (3), one end of the front universal joint (3) is fixedly connected with an intermediate shaft (6), a dustproof structure (5) is arranged outside the intermediate shaft (6), one end, far away from the front universal joint (3), of the intermediate shaft (6) is fixedly connected with a rear universal joint (4), and one end of the rear universal joint (4) is fixedly connected with a rear transmission shaft (2); Dustproof construction (5) are including first dust guard (501), first dust guard (501) are located the outside of jackshaft (6), two fixing bases (502) of equal fixedly connected with in both ends of first dust guard (501), the inside threaded connection of fixing base (502) has bolt (505), the one end threaded connection of bolt (505) has nut (506), the both ends of first dust guard (501) are connected with second dust guard (504) through fixing base (502), bolt (505) and nut (506).
  2. 2. The duplex transmission shaft assembly according to claim 1, wherein the intermediate shaft (6) comprises a spline shaft (601) and a spline housing (602), and the spline shaft (601) and the spline housing (602) are in clamping connection.
  3. 3. The duplex transmission shaft assembly according to claim 2, wherein one end of the spline shaft (601) is provided with a clamping groove (7), two fixing blocks (507) are connected in a clamping mode inside the clamping groove (7), one fixing block (507) is fixedly connected with the first dust-proof plate (501), and the other fixing block (507) is fixedly connected with the second dust-proof plate (504).
  4. 4. A duplex transmission shaft assembly according to claim 3, wherein the inside of the clamping groove (7) is provided with a dust-proof strip (8).
  5. 5. The duplex transmission shaft assembly according to claim 4, wherein one side of the dustproof strip (8) is in clamping connection with the fixed block (507).
  6. 6. The duplex transmission shaft assembly according to claim 2, wherein sliding grooves (503) are formed in the first dust-proof plate (501) and the second dust-proof plate (504), and sliding blocks (9) are arranged in the sliding grooves (503) in a sliding mode.
  7. 7. The duplex transmission shaft assembly as claimed in claim 6, wherein one side of the sliding block (9) is fixedly connected with the spline housing (602).
  8. 8. The duplex transmission shaft assembly according to claim 2, wherein two sliding forks (603) are fixedly connected to one ends of the spline shaft (601) and the spline housing (602), two sliding forks (603) are fixedly connected with the front universal joint (3), and the other two sliding forks (603) are fixedly connected with the rear universal joint (4).

Description

Duplex transmission shaft assembly Technical Field The utility model relates to the technical field of transmission shafts, in particular to a duplex transmission shaft assembly. Background The double-link transmission shaft assembly is a mechanical device for power transmission of vehicles, is formed by connecting ‌ two intermediate transmission shafts in series through two groups of universal joints to form ‌, is used for connecting a non-collinear transmission output shaft and a drive axle input shaft, compensates large-angle offset and axial displacement through a double-universal joint structure, and is suitable for chassis transmission systems of heavy-duty commercial vehicles and off-road vehicles. The existing duplex transmission shaft assembly is single in structure, complex in operation when the spline shaft is required to be disassembled, inconvenient to maintain in the later period, and poor in dustproof effect due to the fact that the spline shaft is easy to retract and dust after sealing grease of the duplex transmission shaft assembly is damaged. Accordingly, one skilled in the art would be able to provide a twin propeller shaft assembly that addresses the above-described issues with the background. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides the duplex transmission shaft assembly, which is provided with the detachable dust guard, is convenient for the later disassembly and maintenance of a spline shaft, seals the sliding area of the spline shaft and a spline sleeve, and forms a sealing mechanism, thereby better preventing dust. In order to achieve the above purpose, the present utility model provides the following technical solutions: The duplex transmission shaft assembly comprises a front transmission shaft, wherein 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 an intermediate shaft, a dustproof structure is arranged outside the intermediate shaft, one end of the intermediate shaft, which is far away from the front universal joint, is fixedly connected with a rear universal joint, and one end of the rear universal joint is fixedly connected with a rear transmission shaft; The dustproof structure comprises a first dustproof plate, wherein the first dustproof plate is positioned outside the intermediate shaft, two fixing seats are fixedly connected to two ends of the first dustproof plate, bolts are connected to the inner threads of the fixing seats, nuts are connected to one ends of the bolts in a threaded manner, and two ends of the first dustproof plate are connected with a second dustproof plate through the fixing seats, the bolts and the nuts; Through above-mentioned technical scheme, set up dustproof construction, utilize bolt and nut to fix first dust guard and second dust guard in the outside of jackshaft, when playing dustproof effect to the integral key shaft, dismantle simply, the dismantlement maintenance of later stage integral key shaft of being convenient for. Further, the intermediate shaft comprises a spline shaft and a spline sleeve, the spline shaft is in clamping connection with the spline sleeve, a clamping groove is formed in one end of the spline shaft, two fixing blocks are connected in clamping connection with the inside of the clamping groove, one fixing block is fixedly connected with the first dust-proof plate, and the other fixing block is fixedly connected with the second dust-proof plate; Through above-mentioned technical scheme, the clamping groove of spline shaft is gone into to the fixed block card with first dust guard and second dust guard, strengthens the steadiness between spline shaft and the dustproof construction. Further, a dustproof strip is arranged in the clamping groove, and one side of the dustproof strip is connected with the fixed block in a clamping way; through above-mentioned technical scheme, through setting up dustproof strip, strengthen the gas tightness between integral key shaft and the dustproof construction. Further, sliding grooves are formed in the first dust-proof plate and the second dust-proof plate, sliding blocks are arranged in the sliding grooves in a sliding mode, and one side of each sliding block is fixedly connected with the spline housing; Through the technical scheme, the sliding block is utilized to slide in the sliding groove, so that the dustproof structure can protect the spline shaft and prevent the spline shaft from being polluted to cause damage when the spline shaft slides in the spline housing. Further, two sliding forks are fixedly connected to one end of the spline shaft and one end of the spline housing, wherein two sliding forks are fixedly connected with the front universal joint, and the other two sliding forks are fixedly connected with the rear universal joint; Through above-mentioned technical scheme, utilize slip fork and universal join