Loader drive axle driving tooth cone bearing adjusting spacer bush structure

Abstract

The utility model discloses a cone bearing adjusting spacer bush structure for a driving tooth of a loader drive axle. An upper end cone bearing and a lower end cone bearing are assembled in an inner hole of a bracket, and inner rings of the bearings are assembled on the driving tooth; the adjusting spacer bush subjected to heat treatment is arranged between the upper end cone bearing and the lower end cone bearing and is used for adjusting a gap between the two bearings; one end of the bearing sleeve is provided with a sealing cover, the sealing cover is locked on the bracket through a spring washer and a bolt, and an oil seal is arranged in an inner hole of the sealing cover; the dustproof cover is installed on the flange and used for preventing dust of the oil seal, the gasket is placed into the flange after the flange is sleeved with the driving tooth, and then the flange is locked on the driving tooth through the locking nut. A bearing assembled on the driving teeth and the bracket is used for supporting the driving teeth. The driving tooth cone bearing is simple and compact in structure, convenient to assemble and reliable to use, and solves the problems that in the prior art, due to abrasion of an adjusting gasket of the driving tooth cone bearing, a bearing gap is enlarged, abnormal sound is generated, the bearing shakes, and finally a main reducer assembly is damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader drive axle assembly technical field, concretely relates to loader drive axle driving gear cone bearing adjusting spacer sleeve structure. BACKGROUND

[0002] The existing wheel loader often works in the harsh environment, especially in the heavy load working condition such as coal mine, mine and so on, the requirement to drive axle carrying capacity is extremely high, mainly reflected in the requirement to bearing carrying capacity. In order to meet the maximum traction of the whole machine, the requirement to loader drive axle is big torque, slow speed when working. Because the speed from transmission shaft to drive axle input flange is fast, and the input flange drives driving gear, makes driving gear cone bearing rotate fast, and the load is big;The existing driving gear cone bearing includes driving gear upper end cone bearing and lower end cone bearing, spacer sleeve and adjusting washer are arranged between the two cone bearings, and the defects are: the driving gear cone bearing under fast rotation, will rub the spacer sleeve and adjusting washer between the upper end cone bearing and the lower end cone bearing of driving gear, because the adjusting washer is very thin copper washer, under long-term friction, produces wear and tear, after wear and tear, will make the clearance of the two cone bearings big and produce abnormal sound, under the continuous heavy load operation, makes the cone bearing abnormal wear and tear, causes bearing to sway even damage, finally leads to the problem of main reducer assembly damage. SUMMARY

[0003] The utility model discloses a kind of driving gear cone bearing adjusting spacer sleeve structures of loader, to solve the problem that the clearance of the two cone bearings is big and produces abnormal sound and bearing to sway and finally leads to the problem of main reducer assembly damage due to the wear and tear of the adjusting washer of driving gear cone bearing in prior art.

[0004] To achieve the above object, the utility model loader drive axle driving gear cone bearing adjusting spacer sleeve structure includes bracket 1, bearing sleeve 2, sealing cover 3, elastic washer 4, bolt 5, oil seal 6, dust cover 7, flange 8, lock nut 9, washer 10, upper end cone bearing 11, heat-treated adjusting spacer sleeve 12, lower end cone bearing 13, driving gear 14 and bearing 15;The upper end cone bearing 11 and lower end cone bearing 13 are assembled in the inner hole of bracket 1, and the bearing inner ring is assembled on driving gear 14;The adjusting spacer sleeve 12 is installed between upper end cone bearing 11 and lower end cone bearing 13 to adjust the clearance between the two bearings;One end of bearing sleeve 2 is installed sealing cover 3, the sealing cover 3 is locked on bracket 1 by elastic washer 4 and bolt 5, and the inner hole of sealing cover 3 is filled with oil seal 6;Dust cover 7 is installed on flange 8 for dustproof to oil seal 6, after flange 8 is sleeved into driving gear 14, washer 10 is placed, and then lock nut 9 is used to lock flange 8 on driving gear 14;Bearing 15 is assembled on driving gear 14 and bracket 1 to support driving gear 14.

[0005] The utility model loader drive axle main drive tooth cone bearing adjusting spacer sleeve structure has the following technical features and beneficial effects through optimizing structure design:

[0006] 1、 by canceling the adjusting washer in the prior art, only the adjusting spacer sleeve which is heat treated and has high flatness is used to adjust the gap between the upper end cone bearing and the lower end cone bearing, the size of the adjusting spacer sleeve can meet the gap adjustment requirement of the cone bearing, after the adjusting washer in the prior art is canceled, the problem and risk caused by the wear of the adjusting washer are eliminated, and the problem that the bearing gap becomes large and the main reducer assembly is finally damaged due to the wear of the adjusting washer of the main drive tooth cone bearing in the prior art is solved.

[0007] 2、 the structure is simple and compact, convenient to assemble, low in maintenance cost and convenient to adjust the gap. DRAWINGS

[0008] Figure 1 It is the main sectional view structure schematic diagram of the utility model loader drive axle main drive tooth cone bearing adjusting spacer sleeve structure.

[0009] The drawings are as follows: bracket 1, bearing sleeve 2, sealing cover 3, elastic pad 4, bolt 5, oil seal 6, dust cover 7, flange 8, locking nut 9, gasket 10, upper end cone bearing 11, adjusting spacer sleeve 12, lower end cone bearing 13, driving tooth 14 and bearing 15. CONCRETE IMPLEMENTATIONS

[0010] The concrete implementation of the utility model loader drive axle main drive tooth cone bearing adjusting spacer sleeve structure will be further explained in detail in combination with the drawings.

[0011] Figure 1 As shown, the utility model loader drive axle main drive tooth cone bearing adjusting spacer sleeve structure comprises bracket 1, bearing sleeve 2, sealing cover 3, elastic pad 4, bolt 5, oil seal 6, dust cover 7, flange 8, locking nut 9, gasket 10, upper end cone bearing 11, heat treated adjusting spacer sleeve 12, lower end cone bearing 13, driving tooth 14 and bearing 15; the upper end cone bearing 11 and the lower end cone bearing 13 are assembled in the inner hole of the bracket 1, and the bearing inner ring is assembled on the driving tooth 14; the adjusting spacer sleeve 12 is installed between the upper end cone bearing 11 and the lower end cone bearing 13 to adjust the gap between the two bearings; one end of the bearing sleeve 2 is provided with the sealing cover 3, the sealing cover 3 is locked on the bracket 1 by the elastic pad 4 and the bolt 5, and the inner hole of the sealing cover 3 is provided with the oil seal 6; the dust cover 7 is installed on the flange 8 to prevent dust from entering the oil seal 6, the gasket 10 is arranged after the flange 8 is sleeved on the driving tooth 14, and then the flange 8 is locked on the driving tooth 14 by the locking nut 9; the bearing 15 is assembled on the driving tooth 14 and the bracket 1 to support the driving tooth 14.

[0012] The adjusting spacer sleeve 12 is heat treated and has high flatness. When the loader is working, the driving tooth 14 and the bearing rotate at high speed. The adjusting spacer sleeve 12 arranged between the two taper bearings can ensure that the gap between the two taper bearings is continuously kept within the required range, so that the oil leakage failure of the drive axle hub oil seal can be obviously reduced under heavy load working condition, the service life and reliability of the drive axle are greatly improved, and the problem that the bearing gap becomes large due to the wear of the adjusting gasket of the driving tooth taper bearing in the prior art and finally leads to the damage of the main reducer assembly is solved.

Claims

1. A loader drive axle driving tooth cone bearing adjusting spacer sleeve structure, comprising a bracket (1), a bearing sleeve (2), a sealing cover (3), a spring washer (4), a bolt (5), an oil seal (6), a dust cover (7), a flange (8), a locking nut (9), a washer (10), an upper end cone bearing (11), a lower end cone bearing (13), a driving tooth (14) and a bearing (15); the upper end cone bearing (11) and the lower end cone bearing (13) are assembled in the inner hole of the bracket (1), and the bearing inner ring is assembled on the driving tooth (14); one end of the bearing sleeve (2) is installed with the sealing cover (3), which is locked on the bracket (1) by the spring washer (4) and the bolt (5), and the inner hole of the sealing cover (3) is installed with the oil seal (6); the dust cover (7) is installed on the flange (8) for dustproof of the oil seal (6), and the washer (10) is put in after the flange (8) is sleeved on the driving tooth (14), and then the flange (8) is locked on the driving tooth (14) by the locking nut (9); the bearing (15) is assembled on the driving tooth (14) and the bracket (1) for supporting the driving tooth (14); characterized in that: It also includes a heat-treated adjusting spacer (12) installed between the upper end cone bearing (11) and the lower end cone bearing (13) to adjust the gap between the two bearings.

Images