Adjustable driving shaft sleeve connecting structure

Abstract

The utility model discloses an adjustable driving shaft sleeve connecting structure which comprises a driving shaft, a rear wheel hub, a fastening bush, a locking washer and a locking nut, and the fastening bush is arranged at the power output end of the driving shaft in a sleeving mode; the rear wheel hub and the locking washer are sequentially arranged on the outer wall of the fastening bush in a sleeving mode. The locking nut is arranged on the locking bush in a threaded connection manner; when the locking nut moves on the locking bush, the rear wheel hub and the locking washer are pushed to move on the fastening bush, so that the fastening bush tightly holds the driving shaft, a key groove of the driving shaft is omitted, the bearing capacity of the driving shaft is improved, the machining time is shortened, a hoop structure is replaced by a taper sleeve structure, and the problem of bolt breakage does not exist.

Description

Technical Field

[0001] The utility model relates to the field of drive shaft sleeves, in particular to an adjustable drive shaft sleeve connection structure. Background Art

[0002] At present, most tractors have adjustable drive hubs that adopt a clamp structure: in order to facilitate axial movement during adjustment, it is divided into two parts, the hub and the hub cover, which are clamped with four bolts and use a flat key to transmit torque.

[0003] The drive shaft bears both bending moment and torque. If a keyway is opened on the shaft, stress concentration is likely to form at the key tail part, which greatly reduces the ability of the key tail part to withstand the combined bending and torsion moment, and is prone to breakage at the key tail part.

[0004] During assembly, it is difficult to ensure that the gaps on both sides are consistent. When the gaps on both sides are inconsistent, the bolts are subjected to bending moment, which reduces the bearing capacity of the bolts and sometimes breaks.

[0005] Therefore, in response to the above-mentioned problems, the present invention proposes an adjustable drive shaft sleeve connection structure to solve the above-mentioned problems. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems in the above-mentioned technology to a certain extent.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes an adjustable drive shaft sleeve connection structure, including: a drive shaft, a rear wheel hub, a locking bushing, a locking washer and a locking nut, wherein the locking bushing is sleeved on the power output end of the drive shaft; the rear wheel hub and the locking washer are sequentially sleeved on the outer wall of the locking bushing; the locking nut is threadedly connected to the locking bushing; when the locking nut moves on the locking bushing, it will push the rear wheel hub and the locking washer to move on the locking bushing, so that the locking bushing hugs the drive shaft.

[0008] In addition, the adjustable drive shaft sleeve coupling structure proposed in the present invention may also have the following additional technical features:

[0009] Furthermore, a tapered hole is provided at the center of the rear wheel hub.

[0010] Furthermore, the locking sleeve is a truncated cone, a thread groove is provided on the side wall of the tapered end of the locking sleeve, and a through locking opening is provided on the side wall of the locking sleeve, wherein the width of the locking opening provided at the end of the thread groove is greater than the locking opening behind the thread groove.

[0011] Furthermore, a limiting block is provided on the inner circular side wall of the locking washer, and the limiting block can move along the locking opening.

[0012] Furthermore, a plurality of grooves are provided on the side wall of the locking nut.

[0013] According to the adjustable drive shaft sleeve connection structure of the utility model, the drive shaft keyway is eliminated, the load-bearing capacity of the drive shaft is improved, and the processing time is reduced. The cone sleeve structure is used instead of the clamp structure, and the problem of broken bolts does not exist.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] Figure 1 This is a structural schematic diagram of an adjustable drive sleeve coupling structure according to one embodiment of the present utility model;

[0017] Figure 2 This is a structural schematic diagram of a rear wheel hub, a locking washer and a locking nut sleeved on a fixing bushing of an adjustable drive shaft sleeve coupling structure according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of a drive shaft structure of an adjustable drive shaft sleeve coupling structure according to an embodiment of the present utility model;

[0019] Figure 4 This is a schematic diagram of a rear wheel hub structure of an adjustable drive shaft sleeve coupling structure according to an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of a fixing bushing structure of an adjustable drive sleeve coupling structure according to an embodiment of the present utility model;

[0021] Figure 6 This is a schematic diagram of the locking washer structure of the adjustable drive shaft sleeve coupling structure according to one embodiment of the present utility model;

[0022] Figure 7 This is a schematic diagram of a locking nut structure of an adjustable drive shaft sleeve coupling structure according to an embodiment of the present utility model;

[0023] As shown in the figure:

[0024] 1. Drive shaft; 2. Rear wheel hub; 21. Tapered hole; 3. Locking bushing; 31. Locking mouth; 4. Locking washer; 41. Limit block; 5. Locking nut; 51. Groove. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] The adjustable drive shaft sleeve coupling structure of the embodiment of the present utility model is described below with reference to the accompanying drawings.

[0027] like Figures 1 to 7 As shown, the adjustable drive shaft sleeve connection structure of the embodiment of the present invention may include: a drive shaft 1, a rear wheel hub 2, a fixing bushing 3, a locking washer 4 and a locking nut 5.

[0028] Specifically, the fixing bushing 3 is sleeved on the power output end of the drive shaft 1, the rear wheel hub 2 and the locking washer 4 are sequentially sleeved on the outer wall of the fixing bushing 3, and the locking nut 5 is threadedly connected to the fixing bushing 3.

[0029] It should be noted that when the locking nut 5 moves on the fixing bushing 3 , it pushes the rear wheel hub 2 and the locking washer 4 to move on the fixing bushing 3 , so that the fixing bushing 3 tightly embraces the drive shaft 1 .

[0030] It can be understood that the fixing bushing 3 is sleeved on the drive shaft 1, and the rear wheel hub 2 and the locking washer 4 are sleeved on the fixing bushing 3 in sequence, and the locking nut 5 is screwed onto the fixing bushing 3 through a thread. At this time, as the locking nut 5 continues to rotate, the rear wheel hub 2 and the locking washer 4 will move along the fixing bushing 3, and continuously squeeze the fixing bushing 3 to make it shrink, thereby holding the drive shaft 1 tightly.

[0031] like Figure 2 Figure 5 As shown, the adjustable drive shaft sleeve connection structure of the embodiment of the utility model may include: a tapered hole 21 is provided at the center of the rear wheel hub 2, the fixing bushing 3 is a truncated cone, a threaded groove is provided on the side wall of the tapered end of the fixing bushing 3, and a through locking opening 31 is provided on the side wall of the fixing bushing 3, wherein the locking opening 31 provided at the end of the threaded groove is wider than the locking opening 31 behind the threaded groove.

[0032] It can be understood that the tapered hole 21 opened on the rear wheel hub 2 can be sleeved on the outer wall of the fixing bushing 3, and as the rear wheel hub 2 continues to move, the fixing bushing 3 will shrink, so that the fixing bushing 3 can hold the drive shaft 1 tightly.

[0033] like Figure 6 Figure 7 As shown, the adjustable drive sleeve connection structure of the embodiment of the utility model may include: a limit block 41 is set on the inner circle side wall of the locking washer 4, the limit block 41 can move along the locking opening 31, and a plurality of grooves 51 are opened on the side wall of the locking nut 5.

[0034] It can be understood that when the locking washer 4 is sleeved on the outer wall of the tightening bushing 3, the limit block 41 provided on the locking washer 4 will be located in the locking opening 31. When the locking opening 31 contracts, the limit block 41 will be limited, thereby limiting the locking washer 4 and preventing it from rotating.

[0035] In summary, according to the adjustable drive shaft sleeve connection structure of the embodiment of the utility model, the drive shaft keyway is eliminated, the bearing capacity of the drive shaft is improved, the processing time is reduced, and the cone sleeve structure is used instead of the clamp structure, so there is no problem of broken bolts.

[0036] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0038] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An adjustable drive sleeve coupling structure, characterized in that: include: A drive shaft (1), a rear wheel hub (2), a fixing bushing (3), a locking washer (4) and a locking nut (5), wherein: The tightening bushing (3) is sleeved on the power output end of the drive shaft (1); The rear wheel hub (2) and the locking washer (4) are sequentially sleeved on the outer wall of the fixing bushing (3); The locking nut (5) is threadedly connected and arranged on the fixing bushing (3); When the locking nut (5) moves on the fixing bushing (3), it pushes the rear wheel hub (2) and the locking washer (4) to move on the fixing bushing (3), so that the fixing bushing (3) tightly embraces the drive shaft (1).

2. The adjustable drive sleeve coupling structure according to claim 1, characterized in that: A tapered hole (21) is provided at the center of the rear wheel hub (2).

3. The adjustable drive sleeve coupling structure according to claim 2, characterized in that: The fixing bushing (3) is a truncated cone, a thread groove is provided on the side wall of the tapered end of the fixing bushing (3), and a through locking opening (31) is provided on the side wall of the fixing bushing (3), wherein the locking opening (31) provided at the end of the thread groove is wider than the locking opening (31) behind the thread groove.

4. The adjustable drive sleeve coupling structure according to claim 3, characterized in that: A limiting block (41) is provided on the inner circular side wall of the locking washer (4), and the limiting block (41) can move along the locking opening (31).

5. The adjustable drive sleeve coupling structure according to claim 1, characterized in that: A plurality of grooves (51) are provided on the side wall of the locking nut (5).

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