High-strength agricultural machinery power transmission shaft

Abstract

The utility model is suitable for the technical field of agricultural machinery transmission shafts, and provides a high-strength agricultural machinery power transmission shaft which comprises a first coupling disc and a second coupling disc, and the first coupling disc is located on one side of the second coupling disc; the transmission shaft sleeve is integrally formed on the outer wall of one side of the first coupling disc and the outer wall of one side of the second coupling disc; the transmission shaft body is arranged on one side of the transmission shaft sleeve; the key is integrally formed on the outer side wall of the transmission shaft body; the key groove is formed in the inner side wall of the transmission shaft sleeve; by rotating the limiting block in the limiting cavity and limiting the position of the limiting block through the check block, accurate butt joint of the first coupling disc and the second coupling disc can be achieved, the firm strength of butt joint of the first coupling disc and the second coupling disc is guaranteed, and only butt joint rotation of the second coupling disc and the first coupling disc is needed when the transmission shaft body is connected. Operation is easy and convenient, and connection and fixation can be achieved without multiple bolts.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery transmission shafts, and in particular relates to a high-strength agricultural machinery power transmission shaft. Background Art

[0002] The agricultural machinery drive shaft is the power transmission between the tractor and the agricultural machinery or between the power output and input of the agricultural machinery itself, so that the agricultural machinery can achieve normal working effect. This shaft has the characteristics of universal transmission and is widely used in power transmission of modern agricultural machinery.

[0003] In existing agricultural machinery transmission shafts, the driving shaft and the driven shaft are usually fixedly connected using a coupling or multiple bolts. Although this connection structure is relatively simple, it is relatively cumbersome during the installation process, and the fixing operation with multiple bolts is cumbersome.

[0004] Therefore, a high-strength agricultural machinery power transmission shaft is proposed. Utility Model Content

[0005] The utility model provides a high-strength agricultural machinery power transmission shaft, aiming to solve the above-mentioned problem.

[0006] The utility model is implemented as follows: a high-strength agricultural machinery power transmission shaft comprises: a first coupling disc and a second coupling disc, the first coupling disc is located on one side of the second coupling disc; a transmission sleeve integrally formed on the outer wall of one side of the first coupling disc and the second coupling disc; a transmission shaft body arranged at a position on one side of the transmission sleeve; a key integrally formed on the outer wall of the transmission shaft body; a keyway arranged on the inner wall of the transmission sleeve; a first pin hole arranged on the outer wall of the transmission sleeve and the key; a limiting groove arranged on the outer wall on the other side of the first coupling disc; and a limiting cavity arranged inside the first coupling disc at a position close to one side of the limiting groove; a spring arranged on the inner wall of the limiting cavity; a stopper arranged at one end of the spring; a limiting block welded to the outer wall on the other side of the second coupling disc; and a second pin hole arranged on the outer wall of the first coupling disc and the limiting block.

[0007] Preferably, the transmission shaft body is a hollow tubular structure, and the inner diameter of each position of the transmission shaft body is the same.

[0008] Preferably, the key and the keyway match and fit together, and the key and the keyway are pin-connected by inserting a fixing pin into the first pin hole.

[0009] Preferably, the limit block and the limit cavity match and fit together, and the limit block and the limit cavity are pin-connected by inserting a fixing pin into the second pin hole.

[0010] Preferably, the limiting groove and the limiting cavity are communicated.

[0011] Preferably, the cross-sections of the limiting groove and the limiting block are both L-shaped structures.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By rotating the position of the limit block inside the limit cavity and limiting the position of the limit block by the stop block, the first coupling disc and the second coupling disc can be accurately docked, and the firm strength of the docking of the first coupling disc and the second coupling disc can be guaranteed. When the transmission shaft body is connected, only the second coupling disc and the first coupling disc need to be docked and rotated. The operation is simple and convenient, and no multiple bolts are required for connection and fixing, which greatly simplifies the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is an exploded schematic diagram of the first coupling disc of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the second coupling disc of the utility model;

[0017] Figure 4 This utility model Figure 1 Enlarged view of point A in .

[0018] In the figure: 1. first coupling plate; 2. second coupling plate; 3. transmission sleeve; 4. transmission shaft body; 5. key; 6. keyway; 7. first pin hole; 8. limit groove; 9. limit cavity; 10. spring; 11. stop block; 12. limit block; 13. second pin hole. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The utility model embodiment provides a high-strength agricultural machinery power transmission shaft, such as Figure 1-4 As shown, it includes a first coupling disc 1 and a second coupling disc 2, the first coupling disc 1 is located on one side of the second coupling disc 2, and a transmission sleeve 3 is welded on one side outer wall of the first coupling disc 1 and the second coupling disc 2, a transmission shaft body 4 is arranged at one side of the transmission sleeve 3, a key 5 is integrally formed on one side outer wall of the transmission shaft body 4, a key slot 6 is provided on one side inner wall of the transmission sleeve 3, the key 5 and the key slot 6 match each other, and the key 5 and the key slot 6 are pinned by inserting a fixing pin into a first pin hole 7, and a first pin is provided on one side outer wall of the transmission sleeve 3 and the key 5. Hole 7, a limiting groove 8 is provided on the outer wall on the other side of the first coupling disc 1, and a limiting cavity 9 is provided at a position on one side of the inner part of the first coupling disc 1 close to the limiting groove 8, a spring 10 is provided on the inner wall on one side of the limiting cavity 9, and a stopper 11 is provided at one end of the spring 10, a limiting block 12 is welded on the outer wall on the other side of the second coupling disc 2, and a second pin hole 13 is provided on the outer wall on one side of the limiting block 12 and the first coupling disc 1, the limiting block 12 and the limiting cavity 9 match and fit together, and the limiting block 12 and the limiting cavity 9 are pin-connected by inserting a fixing pin into the second pin hole 13.

[0022] It should be noted that, in the existing agricultural machinery transmission shaft, the driving shaft and the driven shaft are usually fixedly connected by a coupling or multiple bolts. Although this connection structure is relatively simple, it is cumbersome during the installation process, and the fixing operation of multiple bolts is cumbersome. In this embodiment, the position of the limit block 12 is rotated inside the limit cavity 9, and the position of the limit block 12 is limited by the stop block 11, so that the first coupling disk 1 and the second coupling disk 2 can be accurately docked, and the firm strength of the docking of the first coupling disk 1 and the second coupling disk 2 can be ensured. When the transmission shaft body 4 is connected, only the second coupling disk 2 and the first coupling disk 1 need to be docked and rotated. The operation is simple and convenient, and no multiple bolts are required for connection and fixing, which greatly simplifies the operation.

[0023] Specifically, in this embodiment, this scheme mainly includes a first coupling disc 1 and a second coupling disc 2. When in use, the transmission shaft body 4 is inserted into the transmission shaft sleeve 3, the key 5 is inserted into the keyway 6, and the fixing pin (not shown in the figure) is inserted into the first pin hole 7 on the key 5 to realize the pin connection and fixation between the transmission shaft body 4 and the transmission shaft sleeve 3. The first coupling disc 1 and the second coupling disc 2 are respectively fixed to one end of the two transmission shaft bodies 4. When the two transmission shaft bodies 4 are docked, the limit block 12 on the second coupling disc 2 is inserted into the limit groove 8 on the first coupling disc 1. The stop block 11 in the limit cavity 9 is squeezed and moves inward, and the spring 10 is compressed by force. , the stopper 11 is received in the limit cavity 9. When the limit block 12 is fully inserted into the limit cavity 9, the second coupling disk 2 is rotated, and the limit block 12 on the second coupling disk 2 rotates synchronously. A part of the limit block 12 moves to the inner side of the limit cavity 9, and the limit block 12 is separated from the stopper 11. When the stopper 11 loses the extrusion force, under the action of the spring 10 rebounding and restoring deformation force, the stopper 11 is pushed to one side of the limit block 12 to limit the limit block 12, thereby ensuring the tight docking of the first coupling disk 1 and the second coupling disk 2, and inserting the fixing pin into the second pin hole 13 to further pin-connect and fix the first coupling disk 1 and the second coupling disk 2 to ensure a firm connection.

[0024] In a further preferred embodiment of the present invention, Figure 1 As shown, the transmission shaft body 4 is a hollow tubular structure, and the inner diameter of each position of the transmission shaft body 4 is the same.

[0025] In this embodiment, the hollow transmission shaft body 4 can improve its torque resistance and the structural strength of the transmission shaft body 4, and the transmission shaft body 4 with the same inner wall can further improve its structural strength.

[0026] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the limiting groove 8 is connected to the limiting cavity 9, and the cross-sections of the limiting groove 8 and the limiting block 12 are both L-shaped structures.

[0027] In this embodiment, the limiting block 12 with an L-shaped structure can be rotated after being inserted into the limiting groove 8 and the limiting cavity 9 .

[0028] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0029] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0030] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0031] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A high-strength agricultural machinery power transmission shaft, characterized in that: include: A first coupling plate (1) and a second coupling plate (2), wherein the first coupling plate (1) is located on one side of the second coupling plate (2); A transmission shaft sleeve (3) integrally formed on the outer wall of one side of the first coupling plate (1) and the second coupling plate (2); A transmission shaft body (4) disposed at one side of the transmission shaft sleeve (3); A key (5) integrally formed on the outer side wall of the transmission shaft body (4); A keyway (6) is provided on the inner side wall of the transmission sleeve (3); First pin holes (7) are both provided on the outer side walls of the transmission sleeve (3) and the key (5); A limiting groove (8) is provided on the outer wall of the other side of the first coupling plate (1); and A limiting cavity (9) is provided inside the first coupling disc (1) at a position close to one side of the limiting groove (8); A spring (10) disposed on the inner wall of the limiting cavity (9); A stopper (11) provided at one end of the spring (10); A limit block (12) welded to the outer wall of the other side of the second coupling plate (2); Second pin holes (13) are both provided on the outer side walls of the first coupling plate (1) and the limiting block (12).

2. A high-strength agricultural machinery power transmission shaft as claimed in claim 1, characterized in that: The transmission shaft body (4) is a hollow tubular structure, and the inner diameter of each position of the transmission shaft body (4) is the same.

3. The high-strength agricultural machinery power transmission shaft according to claim 1, characterized in that: The key (5) and the keyway (6) are matched and fit together, and the key (5) and the keyway (6) are pin-connected by inserting a fixing pin into the first pin hole (7).

4. The high-strength agricultural machinery power transmission shaft according to claim 1, characterized in that: The limiting block (12) and the limiting cavity (9) are matched and fit together, and the limiting block (12) and the limiting cavity (9) are pin-connected by inserting a fixing pin into the second pin hole (13).

5. The high-strength agricultural machinery power transmission shaft according to claim 1, characterized in that: The limiting groove (8) and the limiting cavity (9) are communicated with each other.

6. The high-strength agricultural machinery power transmission shaft according to claim 1, characterized in that: The cross sections of the limiting groove (8) and the limiting block (12) are both L-shaped structures.

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