Driving tooth nut locking structure for drive axle of 2-3-ton loader

Abstract

The utility model discloses a driving tooth nut locking structure of a drive axle of a 2-3 ton loader. Inner rings of a lower cone bearing and an upper cone bearing are arranged on a driving tooth, outer rings of the lower cone bearing and the upper cone bearing are assembled on a main speed reducer shell, and the bearing clearance between the lower cone bearing and the upper cone bearing is adjusted through a spacer bush; the oil seal is arranged in a hole of the main speed reducer shell to ensure the coaxiality of the oil seal, the speed reducer shell and a driving gear so as to play a sealing role; one end of the dust cover is welded to the flange, the other end of the dust cover is embedded into a dust cover installation groove of the main speed reducer shell, the flange is assembled on the driving teeth, the gasket is padded into the flange, then the flange is locked through the slotted nut, the lower cone bearing and the upper cone bearing are pressed, and finally the split pin penetrates into a groove of the slotted nut to limit the slotted nut so as to prevent the slotted nut from rotating. The nylon self-locking nut is simple and compact in structure, convenient to assemble, good in anti-loosening effect and safe and reliable to use, and solves the problem that when a loader works, the nut is loosened after nylon of the nylon self-locking nut is abraded, and finally a main transmission assembly breaks down.

Description

Technical Field

[0001] The utility model relates to the technical field of active gear assemblies of a loader drive axle, in particular to a nut locking structure of active gears of a 2-3 ton loader drive axle. Background Art

[0002] Existing wheel loaders often operate in harsh environments. The loader drive axle is located at the bottom of the loader, supporting the entire machine and allowing it to travel. It also bears the steering force when the entire machine turns. This steering force is transmitted from the drive shaft to the main drive. Due to the high speed and high torque, the main drive active gear locking nut can easily loosen and fail. The existing loader drive axle main drive active gear nut locking structure generally uses nylon self-locking nuts for locking. When the loader is working, it needs to frequently turn and accelerate. Under the action of constantly changing steering forces and high torque, the nylon self-locking nut will vibrate frequently, causing the nylon embedded in the nut to rub against the active gear thread, causing the nylon to wear. Continuous operation will aggravate the nylon wear and even cause the nylon anti-loosening to fail, causing the nut to loosen, causing the active gear bearing to shake violently, damaging the bearing and ultimately causing damage to the main drive assembly. Summary of the Invention

[0003] The purpose of the utility model is to solve the above defects and provide a 2-3 ton loader drive axle active gear nut locking structure which has a simple and compact structure, is easy to assemble, has a good anti-loosening effect on the drive axle active gear nut, and is safe and reliable to use, thereby solving the problem that the nylon self-locking nut becomes loose due to nylon wear during loader operation, which ultimately leads to failure of the main transmission assembly.

[0004] To achieve the above purpose, the utility model of the 2-3 ton loader drive axle driving gear nut locking structure includes a lower cone bearing 1, a spacer 2, a main reducer housing 3, an upper cone bearing 4, an oil seal 5, a dust cover 6, a cotter pin 7, a slotted nut 8, a washer 9, a flange 10 and a driving gear 11; the inner rings of the lower cone bearing 1 and the upper cone bearing 4 are assembled on the driving gear 11, and the outer rings are assembled on the main reducer housing 3, and the bearing clearance between the lower cone bearing 1 and the upper cone bearing 4 is adjusted by the spacer 2; the oil seal 5 is installed in the hole of the main reducer housing 3, ensuring the coaxiality of the oil seal 5 with the reducer housing 3 and the driving gear 11 to play a sealing role; one end of the dust cover 6 is welded to the flange 10, and the other end is embedded in the dust cover installation groove of the main reducer housing 3. The flange 10 is assembled on the driving gear 11, and then the washer 9 is inserted and locked with the slotted nut 8 to compress the lower cone bearing 1 and the upper cone bearing 4. Finally, the cotter pin 7 is inserted into the groove of the slotted nut 8 to limit the slotted nut 8 and prevent it from rotating.

[0005] The above-mentioned 2-3 ton loader drive axle active gear nut locking structure has the following technical features and beneficial effects by replacing the nylon self-locking nut with a slotted nut and using a cotter pin to prevent loosening:

[0006] 1. The cotter pin is inserted into the slot of the slotted nut, which effectively limits the rotation and loosening of the slotted nut after being stressed, avoiding the bearing damage and main transmission assembly failure caused by the loosening of the nut. It effectively solves the problem in the prior art that the nylon self-locking nut wears out and the anti-loosening failure causes the nut to loosen, causing the active gear bearing to shake greatly, thus damaging the bearing and ultimately causing damage to the main transmission assembly;

[0007] 2. The structure is simple and compact, easy to assemble; BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of the active gear nut locking structure of the driving axle of a 2-3 ton loader.

[0009] Reference numerals: lower cone bearing 1, spacer sleeve 2, main reducer housing 3, upper cone bearing 4, oil seal 5, dust cover 6, cotter pin 7, slotted nut 8, washer 9, flange 10, driving gear 11. DETAILED DESCRIPTION

[0010] The specific implementation of the active gear nut locking structure of the drive axle of a 2-3 ton loader of the present invention is further described in detail below with reference to the accompanying drawings.

[0011] Figure 1 As shown, the utility model 2-3 ton loader drive axle active gear nut locking structure includes a lower cone bearing 1, a spacer 2, a main reducer housing 3, an upper cone bearing 4, an oil seal 5, a dust cover 6, a cotter pin 7, a slotted nut 8, a washer 9, a flange 10 and an active gear 11; the inner rings of the lower cone bearing 1 and the upper cone bearing 4 are assembled on the active gear 11, and the outer rings are assembled on the main reducer housing 3, and the bearing clearance between the lower cone bearing 1 and the upper cone bearing 4 is adjusted by the spacer 2; the oil seal 5 is installed in In the hole of the main reducer housing 3, ensure the coaxiality of the oil seal 5 with the reducer housing 3 and the driving gear 11 to play a sealing role; one end of the dust cover 6 is welded to the flange 10, and the other end is embedded in the dust cover mounting groove of the main reducer housing 3. The flange 10 is assembled on the driving gear 11, and then the washer 9 is inserted and locked with the slotted nut 8 to compress the lower cone bearing 1 and the upper cone bearing 4. Finally, the cotter pin 7 is inserted into the groove of the slotted nut 8 to limit the slotted nut 8 to prevent it from rotating.

[0012] In the above-mentioned 2-3 ton loader drive axle active gear nut locking structure, the nylon self-locking nut is replaced with a slotted nut, and a cotter pin is inserted into the slot of the slotted nut to prevent loosening. This effectively limits the rotation and loosening of the slotted nut after being subjected to force, thereby avoiding bearing damage and main transmission assembly failure caused by nut loosening. This solves the problem in the prior art that after the nylon self-locking nut wears and the anti-loosening failure occurs, the nut loosens, causing the active gear bearing to shake greatly, damaging the bearing, and ultimately causing damage to the main transmission assembly.

Claims

1. A 2-3 ton loader driving axle driving gear nut locking structure, comprising a lower cone bearing (1), a spacer sleeve (2), a main reducer housing (3), an upper cone bearing (4), an oil seal (5), a dust cover (6), a gasket (9), a flange (10) and a driving gear (11); the inner rings of the lower cone bearing (1) and the upper cone bearing (4) are assembled on the driving gear (11), and the outer rings are assembled on the main reducer housing (3); the bearing clearance between the lower cone bearing (1) and the upper cone bearing (4) is adjusted by the spacer sleeve (2); the oil seal (5) is installed in the hole of the main reducer housing (3) to ensure the coaxiality of the oil seal (5) with the reducer housing (3) and the driving gear (11) to play a sealing role; one end of the dust cover (6) is welded to the flange (10), and the other end is embedded in the dust cover mounting groove of the main reducer housing (3); the characteristics are: It also includes a slotted nut (8) and a split pin (7); the flange (10) is assembled on the driving tooth (11), and then a gasket (9) is inserted and locked with the slotted nut (8) to compress the lower cone bearing (1) and the upper cone bearing (4), and finally the split pin (7) is inserted into the slot of the slotted nut (8) to limit the slotted nut (8) to prevent it from rotating.

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