CN220639412U - High-strength brake-free axle - Google Patents

Abstract

The utility model relates to a high-strength brake-free axle which comprises an axle tube, wherein sleeve shafts are arranged at two ends of the axle tube, hubs are fixed on the sleeve shafts and symmetrically arranged on the sleeve shafts at two ends of the axle tube, a first bearing and a second bearing are rotatably connected at the joint of the inside of the hubs and the sleeve shafts, a first bearing is connected at one end, close to the axle tube, of the sleeve shafts, and a second bearing is connected at one end, far away from the axle tube, of the sleeve shafts. The structure is characterized in that the design of the non-stop bottom plate and the air chamber bracket is adopted, so that the phenomenon of cracking of the shaft tube caused by stress concentration of the shaft tube due to welding of the components is avoided.

Description

High-strength brake-free axle

Technical Field

The utility model relates to the technical field of axles, in particular to a high-strength brake-free axle.

Background

The axle is a shaft for transmitting power between the final drive and the driven wheels, and is a solid.

The existing axle structure is basically an air brake axle, a brake bottom plate and an air chamber bracket are required to be welded at the axle end and the middle part of the axle, and the welding can lead to the risk of stress concentration at the welding part of the axle. On the other hand, in order to perform air braking, a brake and a brake air chamber are required to be mounted on a brake bottom plate and an air chamber bracket in the following process, so that the load of the axle tube is further increased, and under the action of long-term braking, the stress concentration generated by welding is continuously amplified, and finally the axle tube is cracked.

In the prior art, the brake system is removed from the non-braked axle, but the axle has low requirement because of no need of braking, so the general strength is not high, the use scene is severely limited, and the brake system is only suitable for scenes with low requirement on braking such as agriculture.

Disclosure of Invention

In order to solve the problems, the utility model provides the brake-free axle which is simple in structural arrangement, long in service life and high in strength.

In order to achieve the purpose, the high-strength brake-free axle comprises an axle tube, sleeve shafts are arranged at two ends of the axle tube, hubs are fixed on the sleeve shafts and symmetrically arranged on the sleeve shafts at two ends of the axle tube, a first bearing and a second bearing are rotatably connected at the joint of the inside of the hubs and the sleeve shafts, a first bearing is connected at one end, close to the axle tube, of the sleeve shafts, and a second bearing is connected at one end, far away from the axle tube, of the sleeve shafts. The structure is characterized in that the design without a brake bottom plate and an air chamber bracket is adopted, so that the phenomenon of cracking of the shaft tube caused by stress concentration of the shaft tube due to welding of the components is avoided.

The first bearing and the second bearing are identical and arranged in a mirror image mode. The structure can ensure the connection performance between the hub and the sleeve shaft and improve the bearing capacity and the running stability of the hub.

The further scheme is that the outer edge of the hub is a fixed edge, and a plurality of groups of hub bolts are uniformly distributed on the circumference of the fixed edge. The cooperation of fixed limit and wheel hub bolt can strengthen the joint strength and the stability between wheel hub and the wheel, improves the antitorque commentaries on classics performance of whole axletree, reduces the displacement or the not hard up phenomenon that wheel hub produced because of torsional force to guarantee the security and the stability of wheel when high-speed rotation.

The further scheme is that a stop washer is arranged on one side, far away from the shaft tube, of the second bearing, a limit protrusion is arranged on an inner ring of the stop washer, a long groove corresponding to the limit protrusion is arranged on the sleeve shaft axis direction, a shaft head nut is arranged on the outer side of the stop washer, a plurality of groups of fan-shaped protrusions are uniformly distributed on the end face of the outer side of the shaft head nut, and slots are formed between the adjacent fan-shaped protrusions; the shaft tube is provided with a fixing hole, the fixing hole is inserted with a cotter pin, and at least one end of the cotter pin is fixed with the slot in a limiting way. The slot formed by the fan-shaped bulge on the spindle head nut is fixed with the cotter pin, and the cotter pin position is limited by the fixing hole, so that the spindle head nut is fixed and not loosened, and the position of the hub is finally determined, and the stability and safety of the whole axle are ensured.

In order to improve the sealing performance, one end of the sleeve shaft, which is far away from the shaft tube, is sealed by a shaft head cover, and the shaft head cover is connected with the hub through external threads and seals a shaft head nut; the sleeve shaft is close to the junction of one end of the shaft tube and is sealed by an oil seal, and the oil seal is clamped in the hub. The setting of axle head lid can protect inside spare part such as spindle nose nut and lock washer from outside damage, and the setting of oil blanket can prevent that lubricating oil from leaking from axle pipe end, also can prevent impurity entering bearing inside simultaneously to improve the life of bearing.

Compared with the prior art, the high-strength brake-free axle has the obvious advantage that the air chamber and the brake bottom plate are welded on the axle. The brake-free axle in this solution avoids stress build-up during long-term use because it does not weld the air chamber and the brake spider to the axle tube, while also reducing the stresses generated during welding. The design skillfully eliminates the cracking problem caused by stress concentration in the later use process of the shaft tube.

In addition to avoiding stress risers and reducing stresses created by welding, the design of the brake-free axle of the present utility model has the following advantages:

1. and (3) light weight: because no additional welding air chamber and brake bottom plate are needed, the structure of the brake-free axle is simpler, thereby reducing the overall weight. The lightweight design helps to reduce fuel consumption of the vehicle and improves the operating efficiency of the vehicle.

2. Cost saving: in the manufacturing process, complex welding procedures are avoided, and the production cost is reduced. In addition, the simplified structure also helps to reduce the manufacturing and maintenance costs of the components.

3. Intensity is improved: the whole strength of the brake-free axle is improved because of no welding part. This results in axles having better durability and stability under high load conditions.

4. The maintenance is convenient: the welded parts of the air chamber and the brake bottom plate are removed, so that the structure of the brake-free axle is simpler and easier to maintain. The complexity and time costs of maintenance work are reduced.

5. The safety is increased: the brake-free axle has higher safety and reliability in the use process due to the avoidance of stress and potential welding defects generated in the welding process.

In general, the high-strength brake-free axle designed by the utility model has the advantages of simple structure, light weight, cost saving, strength improvement, convenience in maintenance, safety increase and the like, and provides obvious improvement for the performance and the use experience of the vehicle.

Drawings

FIG. 1 is a schematic view of a shaft tube according to the present utility model

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

FIG. 4 is a schematic view of the spindle nose nut of the present utility model;

wherein: the shaft tube 1, the hub 2, the first bearing 3, the second bearing 4, the hub bolt 5, the stop washer 6, the spindle head nut 7, the oil seal 8, the spindle head cover 9, the fixed edge 10, the sleeve shaft 11, the fan-shaped bulge 12, the slot 13, the fixed hole 14, the cotter pin 15, the limit bulge 16 and the long slot 17.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Example 1

As shown in fig. 1 and fig. 2, the high-strength brake-free axle described in this embodiment includes an axle tube 1, sleeve shafts 11 are disposed at two ends of the axle tube 1, hubs 2 are fixed on the sleeve shafts 11, the hubs 2 are symmetrically disposed on the sleeve shafts 11 at two ends of the axle tube 1, a first bearing 3 and a second bearing 4 are rotatably connected at a joint between the inside of the hubs 2 and the sleeve shafts 11, one end of the sleeve shaft 11, which is close to the axle tube 1, is connected with the first bearing 3, and one end, which is far away from the axle tube 1, of the sleeve shaft 11 is connected with the second bearing 4.

Alternatively, the first bearing 3 and the second bearing 4 are identical and mirror-image tapered roller bearing structures.

The outer edge of the hub 2 is a fixed edge 10, and a plurality of groups of hub bolts 5 are uniformly distributed on the circumference of the fixed edge 10.

The side of the second bearing 4 far away from the shaft tube 1 is provided with a stop washer 6, the inner ring of the stop washer 6 is provided with a limit bulge 16, the sleeve shaft 11 is axially provided with a long groove 17 corresponding to the limit bulge 16, and the stop washer is clamped on the sleeve shaft 11 through the fit between the bulge 16 and the long groove 17 during assembly, so that interference fit is formed. The outer side of the stop washer 6 is provided with a spindle nose nut 7, the outer side end surface of the spindle nose nut 7 is provided with a plurality of groups of fan-shaped bulges 12 which are uniformly distributed, and slots 13 are formed between every two adjacent fan-shaped bulges 12; the shaft tube 1 is provided with a fixing hole 14, a cotter pin 15 is inserted in the fixing hole 14, and at least one end of the cotter pin 15 is fixed with the slot 13 in a limiting manner.

The end, far away from the shaft tube 1, of the sleeve shaft 11 is closed by a shaft head cover 9, the shaft head cover 9 is connected with the hub 2 through external threads, and a shaft head nut 7 is closed; the sleeve shaft 11 is close to the one end of central siphon 1 and central siphon 1 juncture with setting up oil blanket 8, thereby the oil blanket 8 joint seals this terminal surface of wheel hub 2 in wheel hub 2, guarantees that the terminal surface of first bearing 3 does not receive external environment's influence.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a no brake axletree of high strength, includes central siphon (1), its characterized in that, central siphon (1) both ends are sleeve (11), be fixed with wheel hub (2) on sleeve (11), and wheel hub (2) are the symmetry form and set up on sleeve (11) at central siphon (1) both ends, and the inside department of being connected with of wheel hub (2) and sleeve (11) rotates first bearing (3) and second bearing (4), sleeve (11) are close to the one end of central siphon (1) and are connected with first bearing (3), and sleeve (11) are kept away from the one end of central siphon (1) and are connected with second bearing (4).

2. The high-strength brake-free axle according to claim 1, characterized in that the first bearing (3) and the second bearing (4) are identical and mirror-image tapered roller bearing structures.

3. The high-strength brake-free axle of claim 2, wherein the outer edge of the hub (2) is a fixed edge (10), and a plurality of groups of hub bolts (5) are uniformly distributed on the circumference of the fixed edge (10).

4. The high-strength brake-free axle of claim 3, wherein a stop washer (6) is arranged on one side, far away from the axle tube (1), of the second bearing (4), a limit protrusion (16) is arranged on the inner ring of the stop washer (6), a long groove (17) corresponding to the limit protrusion (16) is axially arranged on the sleeve shaft (11), a spindle nose nut (7) is arranged on the outer side of the stop washer (6), a plurality of groups of fan-shaped protrusions (12) are uniformly distributed on the outer side end surface of the spindle nose nut (7), and slots (13) are formed between the adjacent fan-shaped protrusions (12); the shaft tube (1) is provided with a fixing hole (14), the fixing hole (14) is inserted with a cotter pin (15), and at least one end of the cotter pin (15) is fixed with the slot (13) in a limiting mode.

5. The high-strength brake-free axle according to claim 4, characterized in that the end of the sleeve shaft (11) remote from the axle tube (1) is closed by a shaft head cover (9), the shaft head cover (9) is connected with the hub (2) through external threads and encloses a shaft head nut (7) therein; one end of the sleeve shaft (11) close to the shaft tube (1) and the junction (2) of the shaft tube (1) are sealed by an oil seal (8), and the oil seal (8) is clamped in the hub (2).