Locking structure for gearbox output shaft of electric loader

Abstract

The utility model discloses an output shaft locking structure of a gearbox of an electric loader. The two ends of an output shaft are provided with external threads, two grooves which are symmetrically distributed and a shaft shoulder; an anti-loosening ring is arranged at the outer end of the large nut; a spacer bush, a bearing, an output flange, an O-shaped ring, a shaft end baffle and a large nut are sequentially assembled on the output shaft from inside to outside, the large nut is screwed into an external thread of the output shaft to be locked, the inner end face of the large nut presses the outer end face of the shaft end baffle, the inner end face of the shaft end baffle presses the inner end face of the output flange, and the O-shaped ring is assembled between the shaft end baffle and the output flange. The output flange and the output shaft are connected through a spline, the small end face of the output flange compresses the bearing, the inner side of the bearing compresses the spacer bush, the inner side of the spacer bush is limited through a shaft shoulder of the output shaft, and the anti-loosening ring at the tail end of the large nut aligns to the two grooves of the output shaft for riveting, so that the anti-loosening ring is embedded into the grooves to prevent the large nut from loosening. The utility model solves the problem that the output shaft of the gearbox of the existing electric loader is easy to loosen and break because the output shaft is locked by a bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader gearbox technical field, concretely relates to electric loader gearbox output shaft locking structure. BACKGROUND

[0002] Compared with conventional fuel loader, electric loader has obvious advantage in noise, energy consumption. With motor as power input, compared with engine, it is more powerful and responds more quickly, so the structure requirement of loader gearbox is also higher. The two ends of the existing electric loader gearbox output shaft generally adopt two bolts for locking, and the defects of the gearbox output shaft locking structure are poor anti-loosening effect and easy bolt loosening and fracture. SUMMARY

[0003] The utility model discloses a simple and compact structure, good anti-loosening effect, reliable use, low maintenance cost electric loader gearbox output shaft locking structure, solves the fault of the prior art adopting bolt locking and being easy to loosen and fracture.

[0004] To realize above -mentioned purpose, the utility model discloses electric loader gearbox output shaft locking structure including output shaft 1, spacer 2, cylindrical roller bearing 3, output flange 4, O type ring 5, axle end baffle 6 and big nut 7, the both ends of output shaft 1 are processed with external thread 1.1, two recesses 1.2 of symmetrical distribution and axle shoulder 1.3, the outer end portion of big nut 7 is equipped with anti-loosening ring 7.1, output shaft 1 is sequentially assembled with spacer 2, bearing 3, output flange 4, O type ring 5, axle end baffle 6 and big nut 7 from inside to outside, this big nut 7 is screwed into the external thread 1.1 of output shaft 1 and is locked, and the inner end surface of big nut 7 will compress the outer end surface of axle end baffle 6, the inner end surface of axle end baffle 6 compresses the inner end surface of output flange 4, and O type ring 5 is assembled between axle end baffle 6 and output flange 4 to ensure sealing, the spline connection is used between output flange 4 and output shaft 1, the small end surface of output flange 4 compresses bearing 3, the inner side of bearing 3 compresses spacer 2, the inner side of spacer 2 is limited through axle shoulder 1.3 of output shaft 1, and anti-loosening ring 7.1 of big nut 7 end is aligned with two recesses 1.2 of output shaft 1 and is knocked riveted, so that anti-loosening ring 7.1 is embedded in recess 1.2 to prevent big nut 7 from loosening.

[0005] The above-mentioned electric loader gearbox output shaft locking structure has the following technical features and beneficial effects through optimization design:

[0006] 1, by processing external thread at the output shaft end, two recesses are processed at the end of the output shaft external thread, and big nut locking is used, the locking force is big, and the anti-loosening ring at the outer end of the big nut is knocked riveted and embedded in the recess at the end of the output shaft external thread, permanent anti-loosening is formed, firm and reliable, effectively solve the problem of bolt loosening and fracture existing in the original bolt locking structure.

[0007] 2. Simple structure, low maintenance cost and reliable use. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is the schematic diagram of the output shaft locking structure of the electric loader gearbox.

[0009] Figure 2 is Figure 1 the schematic diagram of the structure.

[0010] Figure 3 is Figure 1 the schematic diagram of the main section of the output shaft 1.

[0011] Figure 4 is Figure 1 the schematic diagram of the right view of the output shaft 1.

[0012] The output shaft 1, the external thread 1.1, the groove 1.2, the shaft shoulder 1.3, the spacer sleeve 2, the cylindrical roller bearing 3, the output flange 4, the O-ring 5, the shaft end baffle 6, the large nut 7, and the lock washer 7.1. DETAILED DESCRIPTION

[0013] The output shaft locking structure of the electric loader gearbox will be further described in detail below in combination with the drawings and specific embodiments.

[0014] Figures 1-4 As shown, the output shaft locking structure of the electric loader gearbox comprises an output shaft 1, a spacer sleeve 2, a cylindrical roller bearing 3, an output flange 4, an O-ring 5, a shaft end baffle 6, and a large nut 7. The output shaft 1 is provided with external threads 1.1, two symmetrical grooves 1.2, and a shaft shoulder 1.3 at both ends. The outer end of the large nut 7 is provided with a lock washer 7.1. The spacer sleeve 2, the bearing 3, the output flange 4, the O-ring 5, the shaft end baffle 6, and the large nut 7 are sequentially assembled from the inside to the outside of the output shaft 1. The large nut 7 is screwed onto the external threads 1.1 of the output shaft 1, and is locked during assembly. The inner end face of the large nut 7 presses the outer end face of the shaft end baffle 6, the inner end face of the shaft end baffle 6 presses the inner end face of the output flange 4, and the O-ring 5 is assembled between the shaft end baffle 6 and the output flange 4 to ensure sealing. The output flange 4 is connected to the output shaft 1 by spline connection, the small end face of the output flange 4 presses the bearing 3, the inner side of the bearing 3 presses the spacer sleeve 2, the inner side of the spacer sleeve 2 is limited by the shaft shoulder 1.3 of the output shaft 1, and the lock washer 7.1 at the end of the large nut 7 is aligned with the two grooves 1.2 of the output shaft 1 and is knocked into the grooves 1.2 to prevent the large nut 7 from loosening. The locking structure of the output shaft is firm and reliable, and the relevant parts are thus locked and connected.

[0015] The utility model discloses electric loader gearbox output shaft locking structure processes outer thread through in output shaft end, processes two recesses simultaneously in output shaft outer thread end, uses big nut locking, locking force is big, and will prevent loosening ring of big nut outer end knock rivet and insert recess in output shaft outer thread end, forms permanent loosening, firm and reliable, effectively solved the problem that bolt loosening and fracture of original bolt locking structure exist.

Claims

1. An electric loader gearbox output shaft locking structure, which comprises an output shaft (1), a spacer sleeve (2), a cylindrical roller bearing (3), an output flange (4), an O-ring (5) and a shaft end baffle (6); characterized in that: It also includes a large nut (7); the output shaft (1) both ends are processed with external thread (1.1), two recesses (1.2) and shoulder (1.3) are symmetrically distributed; the outer end of the large nut (7) is provided with a lock washer (7.1); the output shaft (1) is sequentially fitted from inside to outside with spacer sleeve (2), bearing (3), output flange (4), O-ring (5), shaft end baffle (6) and large nut (7), the large nut (7) is screwed into the external thread (1.1) of the output shaft (1) to lock, and the inner end face of the large nut (7) presses the outer end face of the shaft end baffle (6), the inner end face of the shaft end baffle (6) presses the inner end face of the output flange (4), and the O-ring (5) is assembled between the shaft end baffle (6) and the output flange (4) to ensure sealing; the output flange (4) and the output shaft (1) are connected by spline, the small end face of the output flange (4) presses the bearing (3), the inner side of the bearing (3) presses the spacer sleeve (2), the inner side of the spacer sleeve (2) is limited by the shoulder (1.3) of the output shaft (1), the lock washer (7.1) at the end of the large nut (7) is aligned with the two recesses (1.2) of the output shaft (1) and is knocked into the recess (1.2) to prevent the large nut (7) from loosening.

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