CN210174540U - Split double-row chain wheel shaft - Google Patents

Abstract

The utility model discloses a split type double sprocket shaft, it belongs to the sprocket shaft field, and it has solved and has lacked a simple structure among the prior art, and easily installation and maintenance and atress situation are good, effectively solve select for use the bearing inner circle diameter to be greater than the oil blanket internal diameter of chooseing for use in the second grade reduction gears of drive axle behind the leveler, assemble the problem of the split type double sprocket shaft of difficulty. The chain wheel shaft and the spline housing are connected through a spline A; the end part of the chain wheel shaft is provided with a fixed threaded hole and a spline B; the pressing plate is in contact with the end face of the spline sleeve and is connected with the chain wheel shaft through a fixing bolt. The utility model discloses select for use the bearing inner race diameter to be greater than the oil blanket internal diameter of chooseing for use and assemble the problem in the second grade reduction gears of mainly used leveler rear drive axle when.

Description

Split double-row chain wheel shaft

Technical Field

The utility model relates to a sprocket shaft, specifically speaking especially relates to a split type double sprocket shaft.

Background

In a rear drive axle product of a six-wheel land leveler with a slewing bearing structure in the domestic market, an integrated double-row sprocket shaft is generally adopted. Because of the limitation of the assembly size of the oil seal, in order to consider the assembly manufacturability, a small bearing with the inner ring diameter smaller than the inner diameter of the oil seal is often selected, so that the phenomenon that the assembly manufacturability of the whole two-stage speed reducing mechanism is poor, the reliability is low, and the bearing is overloaded and stressed to be frequently damaged exists.

At present, a split double-row chain wheel shaft which is simple in structure, easy to install and maintain and good in stress condition and is difficult to assemble when the diameter of a bearing inner ring is larger than the inner diameter of an oil seal selected for use in a secondary speed reducing mechanism of a rear drive axle of a land leveler is effectively solved.

Disclosure of Invention

An object of the utility model is to provide a split type double sprocket shaft to solve and lack a simple structure among the prior art, easily installation and maintenance and atress situation are good, effectively solve select for use the bearing inner circle diameter to be greater than the oil blanket internal diameter of chooseing for use in the second grade reduction gears of drive axle behind the leveler, assemble the problem of the split type double sprocket shaft of difficulty.

The utility model discloses a realize through following technical scheme:

a split double-row chain wheel shaft comprises a chain wheel shaft, a spline housing and a pressing plate, wherein the chain wheel shaft is connected with the spline housing through a spline A; the end part of the chain wheel shaft is provided with a fixed threaded hole and a spline B; the pressing plate is in contact with the end face of the spline sleeve and is connected with the chain wheel shaft through a fixing bolt.

Furthermore, a gap of 1mm-3mm is formed between the end surface of the pressing plate and the end surface of the chain wheel shaft.

Further, the spline A and the spline B have the same specification.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a split type structure, simple structure can promote assembly manufacturability and maintenance convenience, improves production efficiency.

2. The utility model provides a second grade reduction gears of grader rear drive axle, when the bearing inner circle diameter of chooseing for use is greater than the oil blanket internal diameter of chooseing for use, assemble the problem of difficulty.

3. Adopt the utility model relates to a, the bearing of optional bigger specification promotes overall structure's reliability.

4. The chain wheel shaft is easy to install and maintain, stress conditions are good, the spline A and the spline B are in the same specification, stress strength of two end portions of the chain wheel shaft is equal, and reliability of the whole structure is guaranteed.

5. The end face of the pressing plate and the end face of the chain wheel shaft are designed with a gap with the size of 1mm-3mm, so that the pressing plate and the spline housing are guaranteed to be in contact compaction, and axial displacement is avoided.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an axial view of the sprocket shaft of the present invention;

fig. 3 is a partial installation schematic diagram of the second-stage deceleration structure for the rear axle of the land leveler of the present invention.

In the figure: 1. a sprocket shaft; 2. a spline housing; 3. pressing a plate; 4. fixing the bolt; 5. a gasket; 6. fixing the threaded hole; 7. oil sealing; 8. an outer ring of a rolling bearing; 9. an inner ring of a rolling bearing; 10. a reduction housing; 11. a spline A; 12. and a spline B.

Detailed Description

The invention will be further described and illustrated with reference to the accompanying drawings.

Embodiment 1, a split double-row sprocket shaft, it includes sprocket shaft 1, spline housing 2 and clamp plate 3, the said sprocket shaft 1 and spline housing 2 connect through spline A11; the end part of the chain wheel shaft 1 is provided with a fixing threaded hole 6 and a spline B12; the pressing plate 3 is in contact with the end face of the spline housing 2, and the pressing plate 3 is connected with the sprocket shaft 1 through a fixing bolt 4, a gasket 5 and a fixing threaded hole 6.

Embodiment 2, a split double-row sprocket shaft, the end surface of the pressure plate 3 and the end surface of the sprocket shaft 1 are provided with a 2mm gap; the spline a11 and the spline B12 have the same specifications, and the rest are the same as those of embodiment 1.

When in use, the outer ring 8 of the rolling bearing is assembled to the bearing nest on the speed reducing shell 10 by using a tool and needs to be assembled in place; subsequently, the rolling bearing inner ring 9 is heated and assembled to the shaft shoulder of the illustrated sprocket shaft 1, and thereafter the rolling bearing outer ring 9 and the rolling bearing inner ring 8 are assembled together; next, a special tool is used for assembling the oil seal 7 to the oil seal surface of the chain wheel shaft 1 according to requirements, and the oil seal needs to be assembled in place; then the spline housing 2 and the chain wheel shaft 1 are assembled together through the spline A11, the pressure plate 5 is attached to the end face of the spline housing 2, and at the moment, a gap is left between the end face of the spline housing 2 and the end face of the chain wheel shaft 1; finally, fixing the pressing plate 2 and the chain wheel shaft 1 to a certain extent by using a fixing bolt 4 and a gasket 5, and finishing assembly. Spline B12 connects the entire planetary reduction mechanism.

Claims (3)

1. The utility model provides a split type double sprocket shaft which characterized in that: the chain wheel shaft spline shaft comprises a chain wheel shaft (1), a spline housing (2) and a pressing plate (3), wherein the chain wheel shaft (1) is connected with the spline housing (2) through a spline A (11); the end part of the chain wheel shaft (1) is provided with a fixed threaded hole (6) and a spline B (12); the pressing plate (3) is in contact with the end face of the spline housing (2), and the pressing plate (3) is connected with the sprocket shaft (1) through a fixing bolt (4).

2. The split double row sprocket shaft of claim 1, wherein: and a gap of 1mm-3mm is formed between the end surface of the pressing plate (3) and the end surface of the chain wheel shaft (1).

3. The split double row sprocket shaft of claim 1, wherein: the spline A (11) and the spline B (12) have the same specification.

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