Limiting structure for wheel edge end cover of loading machine drive axle

Abstract

The utility model discloses a wheel edge end cover limiting structure of a loader drive axle. A roller pin is assembled in an inner hole of a planet wheel, planet wheel gaskets are assembled on the two sides of the planet wheel to limit the roller pin, and the planet wheel gaskets and the planet wheel are assembled on a planet wheel shaft. The planet wheel shaft is supported on the planet wheel carrier and is fixed on the planet wheel carrier through a steel ball so as to prevent the planet wheel shaft from falling off; the sun gear is assembled on the half shaft and is axially limited by a check ring; the wheel edge end cover is locked on the planet carrier through a bolt, the wheel edge end cover is provided with a limiting step matched with an inner hole of the planet carrier, and the limiting step and the wheel edge end cover are of an integral casting structure. The wheel edge end cover is simple and compact in structure, convenient to assemble, low in maintenance cost and reliable to use, and solves the problem that the wheel edge end cover is locked on the wheel carrier through a bolt, and the bolt is easy to loosen to cause oil leakage of the wheel edge of the drive axle in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader drive axle wheel edge assembly technical field, concretely relates to loader drive axle wheel edge end cover limiting structure. BACKGROUND

[0002] The engineering machinery industry wheel loader generally adopts floating half shaft structure, and the torque of the main transmission assembly is transmitted to the wheel edge speed reducer assembly, the wheel edge speed reducer rotates to drive the tire to work forward and backward, the half shaft two ends are matched with the half shaft gear of the main transmission and the sun gear of the wheel edge through the spline to realize torque transmission. SUMMARY

[0003] The utility model discloses a loader drive axle wheel edge end cover limiting structure that overcomes the above-mentioned defects, has simple and compact structure, is convenient to assemble, low in maintenance cost and reliable in use, and solves the problem of oil leakage of the drive axle wheel edge caused by the bolt loosening of the wheel edge end cover in the prior art.

[0004] To achieve the above object, the utility model discloses a loader drive axle wheel edge end cover limiting structure including bolt 1, wheel edge end cover 2, baffle ring 4, planetary wheel axle 5, steel ball 6, planetary wheel 7, planetary wheel gasket 8, sun gear 9, half shaft 10, planetary wheel frame 11 and roller pin 12.

[0005] The utility model discloses a loader drive axle wheel edge end cover limiting structure that overcomes the above-mentioned defects, has simple and compact structure, is convenient to assemble, low in maintenance cost and reliable in use, and solves the problem of oil leakage of the drive axle wheel edge caused by the bolt loosening of the wheel edge end cover in the prior art.

[0006] 1. The limiting step 3 is additionally arranged on the wheel end cap 2 and matched with the inner hole of the planetary wheel carrier 11, which effectively offsets the alternating load applied to the wheel end cap 2 by the half shaft 10, and solves the problem that the bolt 1 is loosened and the combination surface is leaked due to the alternating load of the wheel end cap 2 by the half shaft 10 in the prior art.

[0007] 2. The structure is simple and compact, the processing technology is simple, the assembly is convenient, the maintenance cost is low, and the use is reliable. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is the main sectional view structure schematic diagram of the loader drive axle wheel end cap limiting structure.

[0009] The drawings show that the loader drive axle wheel end cap limiting structure comprises a bolt 1, a wheel end cap 2, a retaining ring 4, a planetary wheel shaft 5, a steel ball 6, a planetary wheel 7, a planetary wheel gasket 8, a sun gear 9, a half shaft 10, a planetary wheel carrier 11 and a roller pin 12. DETAILED DESCRIPTION

[0010] The specific embodiments of the loader drive axle wheel end cap limiting structure of the utility model will be further described in detail below with reference to the drawings.

[0011] Figure 1 The utility model discloses a loader drive axle wheel end cap limiting structure, which comprises a bolt 1, a wheel end cap 2, a retaining ring 4, a planetary wheel shaft 5, a steel ball 6, a planetary wheel 7, a planetary wheel gasket 8, a sun gear 9, a half shaft 10, a planetary wheel carrier 11 and a roller pin 12. The roller pin 12 is assembled in the inner hole of the planetary wheel 7, and the planetary wheel gasket 8 is assembled on both sides of the planetary wheel 7 to limit the roller pin 12, and the planetary wheel gasket 8 and the planetary wheel 7 are assembled on the planetary wheel shaft 5. The planetary wheel shaft 5 is supported on the planetary wheel carrier 11 and fixed on the planetary wheel carrier 11 through the steel ball 6 to prevent the planetary wheel shaft 5 from falling off. The sun gear 9 is assembled on the half shaft 10 and axially limited by the retaining ring 4. The wheel end cap 2 is locked on the planetary wheel carrier 11 by the bolt 1, and the wheel end cap 2 is provided with a limiting step 3 matched with the inner hole of the planetary wheel carrier 11, and the limiting step 3 and the wheel end cap 2 are integrally casted.

[0012] When the loader works, the torque is transmitted to the sun gear 9 through the half shaft output, the sun gear 9 rotates to drive the planetary gear 7 and the planetary gear carrier 11, the planetary gear carrier 11 rotates and outputs to the tire, so that the loader realizes walking; when the half shaft 10 rotates and outputs, the end face of the half shaft 10 abuts against the wheel rim end cover 2, the wheel rim end cover 2 prevents the half shaft from moving axially at the same time, and also bears the axial movement force of the half shaft 10 on the wheel rim end cover 2, because the loader is constantly working forward and backward, the wheel rim end cover 2 also bears the constantly changing alternating load, because the limiting step 3 of the wheel rim end cover 2 cooperates with the inner hole of the planetary gear carrier 11 at this time, the load intensity can be greatly offset, so that the bolt 1 of the locking wheel rim end cover 2 is no longer loose, and the problem that the bolt 1 is loose and finally leads to the oil leakage of the joint surface due to the alternating load of the wheel rim end cover 2 by the half shaft 10 in the prior art is solved.

Claims

1. A loader drive axle wheel end cover limiting structure, comprising a bolt (1), a wheel end cover (2), a retainer ring (4), a planetary wheel shaft (5), a steel ball (6), a planetary wheel (7), a planetary wheel gasket (8), a sun gear (9), a half shaft (10), a planetary wheel carrier (11) and a roller pin (12); the roller pin (12) is assembled in the inner hole of the planetary wheel (7), the planetary wheel gasket (8) is assembled on both sides of the planetary wheel (7) to limit the roller pin (12), the planetary wheel gasket (8) and the planetary wheel (7) are assembled on the planetary wheel shaft (5); the planetary wheel shaft (5) is supported on the planetary wheel carrier (11) and fixed on the planetary wheel carrier (11) through the steel ball (6) to prevent the planetary wheel shaft (5) from falling off; the sun gear (9) is assembled on the half shaft (10) and axially limited by the retainer ring (4); the wheel end cover (2) is locked on the planetary wheel carrier (11) by the bolt (1); characterized in that: The wheel end cap (2) is provided with a limiting step (3) matched with the inner hole of the planet carrier (11), and the limiting step (3) and the wheel end cap (2) are integrally cast.

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