Wear-resistant dustproof heavy truck transmission shaft

Abstract

The utility model relates to a wear-resistant dustproof heavy truck transmission shaft which comprises a transmission shaft, the inner wall of the transmission shaft is connected with a spline shaft in a sliding mode, the end portion of the transmission shaft is fixedly connected with a first universal joint fork through a flange plate, the first universal joint fork is in transmission connection with a cross shaft, and the cross shaft is in transmission connection with a second universal joint fork. The outer wall of the spline shaft is sleeved with a telescopic sleeve, the outer wall of the second universal joint fork is sleeved with a ball cage, the outer wall of the transmission shaft is sleeved with a dustproof sleeve, the end of the dustproof sleeve is fixedly connected with a positioning ring, and the inner wall of the positioning ring is slidably connected with a positioning rod. According to the dustproof cover, the positioning ring, the positioning rod, the disc and other structures are arranged, positioning is provided when the dustproof cover is installed, the time for adjusting the position of the dustproof cover in the installation process is shortened, the problems of poor sealing or infirm installation and the like caused by position deviation are solved, and the installation efficiency and accuracy of the dustproof cover are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of transmission shaft, especially a wear-resistant dustproof heavy truck transmission shaft. BACKGROUND

[0002] ‌The heavy truck transmission shaft is an important part in the automobile transmission system, and the main function is to transmit the power of the engine to the wheels to make the automobile generate driving force. The transmission shaft is composed of a shaft tube, an expansion sleeve and a universal joint. The expansion sleeve can automatically adjust the distance change between the gearbox and the drive axle, and the universal joint ensures the angle change between the output shaft of the gearbox and the input shaft of the drive axle, realizing the equal angular speed transmission of the two shafts. Since the transmission shaft needs to work in various complex and harsh environments such as mines, construction sites and muddy roads during the use of heavy trucks, the transmission shaft needs to have a dustproof function.

[0003] In the prior art, a ball cage dustproof cover is arranged at the universal joint part of the transmission shaft to protect the universal joint from dust. However, the ball cage dustproof cover lacks positioning and fixing outside the universal joint. With the use of the transmission shaft and the bumping and vibration during the driving of the automobile, the ball cage dustproof cover will displace relative to the universal joint, the protection performance will decrease, and the dust, sand and other impurities from the outside will easily enter the universal joint part from the gap, causing the rotating part of the universal joint to be affected by the impurities. The impurities may adhere to the lubricating part, causing the rotating wear of the universal joint to increase, and reducing the service life of the universal joint.

[0004] Therefore, a wear-resistant dustproof heavy truck transmission shaft is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a wear-resistant dustproof heavy truck transmission shaft, which aims to improve the problem that the dustproof cover of the existing wear-resistant dustproof heavy truck transmission shaft lacks positioning during installation between the ball cage, which makes the installation inaccurate or increases the risk of long installation time, thereby reducing the dustproof effect of the transmission shaft.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a wear-resistant dustproof heavy truck transmission shaft, including transmission shaft, the inner wall sliding connection of transmission shaft has the spline shaft, the end of transmission shaft is fixedly connected with universal joint fork no.

[0007] As a preferred, one end of the spring away from the disc is fixedly connected with the inner wall of the positioning ring, and the end of the positioning rod away from the disc penetrates the positioning ring.

[0008] As a preferred, the outer wall of the positioning rod is matched with the inner wall of the positioning hole.

[0009] As a preferred, the outer wall of the positioning rod is matched with the inner wall of the limiting hole.

[0010] As a preferred, the magnetic ring two is fixedly connected with the inner surface of the positioning ring on the side away from the magnetic ring one.

[0011] As a preferred, the outer surface of the dust cover near the one end of the ball cage is fixedly connected with the dust ring, the inner wall of the dust ring is fixedly connected with the suction piece, and the outer wall of the suction piece is magnetically connected with the fixed piece.

[0012] As a preferred, the dust ring is sleeved on the outer wall of the dust cover.

[0013] As a preferred, the outer wall of the fixed piece on the side away from the suction piece is fixedly connected with the outer wall of the clamp.

[0014] The utility model has the advantages of the following:

[0015] 1、In the utility model, when the dust cover and the ball cage are contacted by the positioning ring, the positioning rod is penetrated through the limiting hole under the action of the spring and the magnetic piece one and the magnetic piece two, and the positioning hole of the clamp is penetrated through the positioning rod and is locked by the bolt, so that the positioning is provided when the dust cover is installed, the adjustment time of the position of the dust cover in the installation process is reduced, the problems of poor sealing or unfirm installation caused by the position deviation are avoided, and the installation efficiency and accuracy of the dust cover are improved.

[0016] 2、 The utility model discloses a dustproof ring is covered stably on the outside of the clamp through the magnetic dustproof ring with fixed sheet and suction sheet, effective coverage and protection of the clamp part are realized, dust and sundries are prevented from entering the inside of the clamp, thereby prolonging the service life of the clamp, and further improving the service life of the dustproof part. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A main body structure schematic diagram of a wear-resistant dustproof heavy truck transmission shaft is provided for the utility model.

[0018] Figure 2 A main body structure separation schematic diagram is provided for the utility model.

[0019] Figure 3 A partial structure separation schematic diagram is provided for the utility model.

[0020] Figure 4 A dust cover and ball cage separation schematic diagram is provided for the utility model.

[0021] Figure 5 A dust cover bottom view schematic diagram is provided for the utility model.

[0022] Figure 6 A dust cover bottom view schematic diagram is provided for the utility model. Figure 5 A region enlargement schematic diagram is provided for the utility model.

[0023] Legend:

[0024] 1, transmission shaft;2, spline shaft;3, universal joint fork one;4, cross shaft;5, universal joint fork two;6, telescopic sleeve;7, dust cover;8, ball cage;9, positioning ring;10, positioning rod;11, disc;12, spring;13, magnetic ring one;14, magnetic ring two;15, limit hole;16, clamp;17, bolt;18, positioning hole;19, dustproof ring;20, fixed sheet;21, suction sheet. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.

[0026] Refer to Figures 1-3The utility model provides a kind of embodiment: a kind of wear-resistant dustproof heavy truck transmission shaft, the inner wall sliding connection has spline shaft 2 in transmission shaft 1, the end of transmission shaft 1 is fixedly connected with universal joint fork one 3 by flange plate, universal joint fork one 3 is drivenly connected with cross shaft 4, cross shaft 4 is drivenly connected with universal joint fork two 5, the outer wall of universal joint fork two 5 is fixed with external equipment by flange plate, the outer wall of spline shaft 2 is equipped with telescopic sleeve 6, telescopic sleeve 6 is fixed on the outer wall of transmission shaft 1 and spline shaft 2 by screw, telescopic sleeve 6 provides dust protection to spline shaft 2, the outer wall of universal joint fork two 5 is equipped with ball cage 8, ball cage 8 is fixed on the flange plate connected with universal joint fork two 5, the outer wall of transmission shaft 1 is equipped with dust cover 7, and the end of dust cover 7 close to transmission shaft 1 is connected with transmission shaft 1 by adhesive agent, adhesive agent can form a uniform sealing layer between dust cover 7 and transmission shaft 1, effectively prevent dust, moisture and other impurities from entering, further improve dustproof effect.

[0027] Referring to Figures 4-6 The end of dust cover 7 is fixedly connected with positioning ring 9, the inner wall sliding connection has positioning rod 10 in positioning ring 9, the end of positioning rod 10 away from disc 11 penetrates positioning ring 9, the end of positioning rod 10 is fixedly connected with disc 11, universal joint fork one 3, universal joint fork two 5 and cross shaft 4 form universal joint assembly, disc 11 is in the inside of dust cover 7, because the area of dust cover 7 is much larger than universal joint assembly, so the local area of disc 11 and positioning rod 10 will not touch universal joint assembly, the side wall of disc 11 is fixedly connected with spring 12, the end of spring 12 away from disc 11 is fixedly connected with the inner wall of positioning ring 9, the side wall of disc 11 is fixedly connected with magnetic ring one 13, the side wall of magnetic ring one 13 is magnetically connected with magnetic ring two 14, by the attraction between magnetic ring one 13 and magnetic ring two 14, positioning rod 10 is always kept relatively contracted state in the absence of external force, spring 12 makes disc 11 relatively close to the inner wall of positioning ring 9, the inner surface of positioning ring 9 is fixedly connected with the side of magnetic ring two 14 away from magnetic ring one 13, the outer wall of ball cage 8 is penetrated and is provided with limiting hole 15, the outer wall of positioning rod 10 is matched with the inner wall of limiting hole 15, the outer wall of ball cage 8 is provided with clamp 16, clamp 16 is provided with four groups, and four groups of clamp 16 are mirror image setting with every group ball cage 8 central axis as symmetry axis, the inner wall of clamp 16 is screw-threaded with bolt 17, and the two ends of every two groups of clamp 16 are fixed by bolt 17, the outer wall of clamp 16 is penetrated and is provided with positioning hole 18, and the outer wall of positioning rod 10 is matched with the inner wall of positioning hole 18.

[0028] Referring to Figures 3-4The outer surface of the end of the dust cover 7 close to the ball cage 8 is fixedly connected with a dustproof ring 19, the dustproof ring 19 is sleeved on the outer wall of the dust cover 7, the diameter of the dustproof ring 19 close to the dust cover 7 is smaller than the diameter of the dustproof ring 19 far from the dust cover 7, meanwhile, the dustproof ring 19 is made of soft material, so the dustproof ring 19 can be folded, the inner wall of the dustproof ring 19 is fixedly connected with a suction piece 21, the outer wall of the suction piece 21 is magnetically connected with a fixed piece 20, the outer wall of the side of the fixed piece 20 far from the suction piece 21 is fixedly connected with the outer wall of the clamp 16, the dustproof ring 19 is covered on the clamp 16 by the magnetism of the fixed piece 20 and the suction piece 21, and the dustproof ring 19 can be fixed.

[0029] Working principle: the dust cover 7 is sleeved on the transmission shaft 1, after the universal joint assembly is fixedly installed with the transmission shaft 1, the positioning ring 9 is inserted into the ball cage 8, at this time, the positioning rod 10 contacts the inner wall of the ball cage 8 and is extruded to enter the inside of the positioning ring 9, meanwhile, the spring 12 is in a stretched state under the action of force, the dust cover 7 is rotated, when the positioning rod 10 is aligned with the limiting hole 15, the positioning rod 10 loses the extrusion force, the elastic force of the spring 12 is recovered, the positioning rod 10 is quickly penetrated out of the limiting hole 15 by the magnetic attraction force of the magnetic ring one 13 and the magnetic ring two 14, at this time, the positioning ring 9 and the ball cage 8 form positioning, the clamp 16 is taken, the positioning hole 18 on the surface of the clamp 16 is aligned with the positioning rod 10 and is inserted, after the two clamps 16 are positioned, the clamp 16 is locked by the bolt 17, after the dust cover 7 is fixed, the dustproof ring 19 is folded, the magnetic attraction between the fixed piece 20 and the suction piece 21 is realized, after the dustproof ring 19 covers the outer ring of the clamp 16, the influence of dust, moisture, oil stains and the like on the clamp 16 is reduced, the risk that the clamp 16 is disabled due to corrosion or abrasion is reduced, finally, the contact surface of the dust cover 7 and the transmission shaft 1 is bonded by using the adhesive, so that the dustproof effect provided for the transmission shaft 1 is further ensured.

[0030] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement and the like within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A wear-resistant and dustproof heavy-duty truck drive shaft, comprising a drive shaft (1), wherein a splined shaft (2) is slidably connected to the inner wall of the drive shaft (1), a universal joint fork (3) is fixedly connected to the end of the drive shaft (1) via a flange, a cross shaft (4) is drivenly connected to the universal joint fork (4), a second universal joint fork (5) is drivenly connected to the cross shaft (4), and a telescopic sleeve (6) is fitted on the outer wall of the splined shaft (2), characterized in that: The outer wall sleeve of the universal joint fork two (5) is provided with a ball cage (8), the outer wall sleeve of the transmission shaft (1) is provided with a dust cover (7), the end of the dust cover (7) is fixedly connected with a positioning ring (9), the inner wall of the positioning ring (9) is slidably connected with a positioning rod (10), the end of the positioning rod (10) is fixedly connected with a disc (11), the side wall of the disc (11) is fixedly connected with a spring (12), the side wall of the disc (11) is fixedly connected with a magnetic ring one (13), the side wall of the magnetic ring one (13) is magnetically connected with a magnetic ring two (14), the outer wall of the ball cage (8) is provided with a limiting hole (15), the outer wall of the ball cage (8) is provided with a clamp (16), the inner wall of the clamp (16) is threadedly connected with a bolt (17), and the outer wall of the clamp (16) is provided with a positioning hole (18).

2. The wear-resistant dustproof heavy truck transmission shaft according to claim 1, characterized in that: The end, away from the disc (11), of the spring (12) is fixedly connected with the inner wall of the positioning ring (9), and the end, away from the disc (11), of the positioning rod (10) penetrates through the positioning ring (9).

3. The wear-resistant dustproof heavy truck transmission shaft according to claim 1, characterized in that: The outer wall of the positioning rod (10) is matched with the inner wall of the positioning hole (18).

4. The wear-resistant dustproof heavy truck transmission shaft according to claim 1, characterized in that: The outer wall of the positioning rod (10) is matched with the inner wall of the limiting hole (15).

5. The wear-resistant dustproof heavy truck transmission shaft according to claim 1, characterized in that: The side, away from the magnetic ring one (13), of the magnetic ring two (14) is fixedly connected with the inner surface of the positioning ring (9).

6. The wear-resistant dustproof heavy truck transmission shaft according to claim 1, characterized in that: The outer surface of the end, close to the ball cage (8), of the dust cover (7) is fixedly connected with a dust ring (19), the inner wall of the dust ring (19) is fixedly connected with a suction piece (21), and the outer wall of the suction piece (21) is magnetically connected with a fixed piece (20).

7. The wear-resistant dustproof heavy truck transmission shaft according to claim 6, characterized in that: The dust ring (19) is sleeved on the outer wall of the dust cover (7).

8. The wear-resistant dustproof heavy truck transmission shaft according to claim 6, characterized in that: The side wall, away from the suction piece (21), of the fixed piece (20) is fixedly connected with the outer wall of the clamp (16).

Images