Spline shaft connecting device for loading machine

Abstract

The utility model discloses a spline shaft connecting device for a loading machine, which belongs to the technical field of spline shafts and comprises a spline shaft shell, a spline shaft is arranged in the spline shaft shell, a first wing-shaped flange is arranged at one end of the spline shaft, and a first cross shaft is arranged on the first wing-shaped flange. A spline sleeve is arranged at one end of the spline shaft shell, the spline sleeve is connected with the spline shaft shell in an inserted mode, and a sealing oil plug is arranged at the clamping position of the spline sleeve and the spline shaft shell. A second wing-shaped flange is arranged at one end of the spline sleeve, a second cross-shaped shaft is arranged on the second wing-shaped flange, and a shock pad is arranged on the inner side of the spline sleeve. The spline shaft fixing structure can ensure the stability of the spline shaft after installation, has fixing and sealing effects, can be suitable for severe working environments, and ensures the stability of the spline shaft in the severe working environments.

Description

Technical Field

[0001] The utility model belongs to the technical field of spline shafts, and particularly relates to a spline shaft connection device for a loader. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] A loader is an earthwork construction machine widely used in construction projects such as highways, railways, buildings, hydropower, ports, mines, etc. It is mainly used for shoveling bulk materials such as soil, sand, gravel, lime, coal, etc., and can also perform light shoveling operations on ores, hard soils, etc. By replacing different auxiliary working devices, it can also perform earthmoving, lifting, and loading and unloading operations of other materials such as wood.

[0004] There is a spline shaft in the loader, and torque is transmitted through the spline shaft. The installation stability of the spline shaft will affect its performance. If the stability after installation is insufficient, it may cause the bearing to bear additional stress and accelerate damage. And the spline shaft usually works in harsh environments such as high temperature, high humidity, corrosive media, etc., and problems such as corrosion and deformation may occur to the spline shaft. Content of the Utility Model

[0005] In view of the above problems, the utility model provides a spline shaft connection device for a loader, which can ensure the stability of the spline shaft after installation, has a fixing and sealing function, and is also applicable to harsh working environments to ensure stability in harsh working environments.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A spline shaft connection device for a loader includes a spline shaft housing. A spline shaft is arranged inside the spline shaft housing. A first wing-shaped flange is arranged at one end of the spline shaft, and a first cross shaft is arranged on the first wing-shaped flange; a spline sleeve is arranged at one end of the spline shaft housing, the spline sleeve is inserted into the spline shaft housing, and a sealing oil plug is arranged at the clamping position of the spline sleeve and the spline shaft housing; a second wing-shaped flange is arranged at one end of the spline sleeve, a second cross shaft is arranged on the second wing-shaped flange, and a shock pad is arranged inside the spline sleeve.

[0008] Further, the spline shaft and the spline shaft housing are of an integrated structure, and there is a gap between the spline shaft and the inner wall surface of the spline shaft housing.

[0009] Further, the spline sleeve is inserted into the gap between the spline shaft and the inner wall of the spline shaft housing.

[0010] Further, the spline shaft housing is divided into a first connecting portion, a second connecting portion, and a third connecting portion. One end of the first connecting portion is the second connecting portion, and one end of the second connecting portion is the third connecting portion.

[0011] Further, the width of the cross-section of the first connecting portion is greater than that of the second connecting portion, and the inner wall surface of the first connecting portion is in close contact with the outer wall surface of the sealing oil plug.

[0012] Further, a first wing-shaped flange is provided at one end of the third connecting portion. The third connecting portion is detachably connected to the first wing-shaped flange, and a plurality of first fixing bolts are arranged at intervals on the first wing-shaped flange.

[0013] Further, the spline sleeve includes a fourth connecting portion, a fifth connecting portion, and a sixth connecting portion. One end of the fourth connecting portion is the fifth connecting portion, and one end of the fifth connecting portion is the sixth connecting portion.

[0014] Further, the cross-sectional width of the fourth connecting portion is smaller than that of the first connecting portion. There is a gap between the outer wall surface of the fourth connecting portion and the inner wall surface of the first connecting portion, and the inner wall surface of the sealing oil plug is in close contact with the outer wall surface of the fourth connecting portion.

[0015] Further, a second wing-shaped flange is provided at one end of the sixth connecting portion. The second wing-shaped flange is detachably connected to the sixth connecting portion.

[0016] Further, a plurality of second fixing bolts are arranged at intervals on the second wing-shaped flange.

[0017] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0018] The present utility model is provided with a spline sleeve and a spline shaft housing. The spline shaft is arranged inside the spline shaft housing, and the spline sleeve is inserted into the spline shaft housing to wrap the spline shaft. Compared with the traditional spline connection, the connection between the spline shaft housing and the spline sleeve is fully enclosed, which can ensure the stability of the spline shaft after installation, make the fixation more firm, avoid the contact between the spline shaft and the external environment, be applicable to harsh working environments, and ensure stable operation in harsh working environments, thus ensuring stability.

[0019] There is a shock-absorbing pad inside the spline sleeve of the present utility model, which plays a role in shock absorption and sealing on the premise of ensuring the connection; and a sealing oil plug is installed at the connection between the spline shaft housing and the spline sleeve to further improve the sealing effect and protect the spline shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 It is a structural diagram of the spline shaft connection device of the utility model;

[0022] In the figure: 1, spline shaft housing; 101, first connection part; 102, second connection part; 103, third connection part; 2, spline shaft; 3, spline sleeve; 301, fourth connection part; 302, fifth connection part; 303, sixth connection part; 4, sealing oil plug; 5, first wing-shaped flange; 6, first cross shaft; 7, first fixing bolt; 8, second wing-shaped flange; 9, second cross shaft; 10, second fixing bolt. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0024] The loader is equipped with a spline shaft, which transmits torque through the spline shaft. The stability of the spline shaft installation will affect its performance. If the stability is insufficient after installation, it may cause the bearing to be subjected to additional stress and accelerate damage. In addition, the spline shaft usually works in harsh environments, such as high temperature, high humidity, corrosive media, etc., and the spline shaft may suffer from corrosion, deformation and other problems.

[0025] The utility model is described in detail below in conjunction with the accompanying drawings. The present embodiment discloses a spline shaft connection device for a loader, such as Figure 1 As shown, it includes a spline shaft housing 1, a spline shaft 2 is arranged in the spline shaft housing 1, a first wing-shaped flange 5 is arranged at one end of the spline shaft 2, and a first cross shaft 6 is arranged on the first wing-shaped flange 5; a spline sleeve 3 is arranged at one end of the spline shaft housing 1, the spline sleeve 3 is plugged into the spline shaft housing 1, and a sealing oil plug 4 is arranged at the clamping position of the spline sleeve 3 and the spline shaft housing 1; a second wing-shaped flange 8 is arranged at one end of the spline sleeve 3, a second cross shaft 9 is arranged on the second wing-shaped flange 8, and a shock-absorbing pad is arranged on the inner side of the spline sleeve 3.

[0026] The first cross shaft 6 and the second cross shaft 9 are used to connect the intermediate support or flange, and the first fixing bolt 7 and the second fixing bolt 10 are used to fix the flange surface.

[0027] The spline shaft 2 is arranged inside the spline shaft housing 1. The spline sleeve 3 is inserted into the spline shaft housing 1 to wrap the spline shaft 2. Compared with the traditional spline connection, the connection between the spline shaft housing 1 and the spline sleeve 3 is fully enclosed, which can ensure the stability of the spline shaft 2 after installation, make the fixation more firm, avoid the contact between the spline shaft 2 and the external environment, that is, prevent substances such as dust and impurities from the outside from entering the inside of the spline shaft housing 1, and further play a protective role for the spline shaft 2, enabling the spline shaft 2 to be applicable to harsh working environments and ensuring stable operation in harsh working environments, thus guaranteeing the stability.

[0028] The spline shaft 2 and the spline shaft housing 1 are of an integrated structure, and there is a gap between the inner wall surface of the spline shaft 2 and the spline shaft housing 1. The spline sleeve 3 is inserted into the gap between the spline shaft 2 and the inner wall of the spline shaft housing 1. There is a shock-absorbing pad inside the spline sleeve 3, which plays a role in shock absorption and sealing on the premise of ensuring the connection; and a sealing oil plug 4 is installed at the connection between the spline shaft housing 1 and the spline sleeve 3 to further improve the sealing effect and play a protective role for the spline shaft 2.

[0029] The spline shaft housing 1 is divided into a first connecting portion 101, a second connecting portion 102, and a third connecting portion 103. One end of the first connecting portion 101 is the second connecting portion 102, and one end of the second connecting portion 102 is the third connecting portion 103. The width of the cross-section of the first connecting portion 101 is greater than that of the second connecting portion 102, and the inner wall surface of the first connecting portion 101 is in close contact with the outer wall surface of the sealing oil plug 4. The gap between the spline shaft housing 1 and the spline sleeve 3 is blocked by the sealing oil plug 4, thereby preventing impurities from entering the spline shaft housing 1 to erode the spline shaft 2.

[0030] A first wing-shaped flange 5 is provided at one end of the third connecting portion 103. The third connecting portion 103 is detachably connected to the first wing-shaped flange 5, and a plurality of first fixing bolts 7 are arranged at intervals on the first wing-shaped flange 5. The first wing-shaped flange 5 plays a connecting role to connect the spline shaft 2 with the corresponding power component.

[0031] The spline sleeve 3 includes a fourth connecting portion 301, a fifth connecting portion 302, and a sixth connecting portion 303. One end of the fourth connecting portion 301 is the fifth connecting portion 302, and one end of the fifth connecting portion 302 is the sixth connecting portion 303. The fourth connecting portion 301 of the spline sleeve 3 is inserted into the gap between the inner wall surface of the first connecting portion 101 of the spline shaft 2 and the outer wall surface of the spline shaft 2, realizing the insertion connection between the spline shaft housing 1 and the spline sleeve 3 and playing a fixing role.

[0032] The cross-section width of the fourth connecting portion 301 is smaller than that of the first connecting portion 101. There is a gap between the outer wall surface of the fourth connecting portion 301 and the inner wall surface of the first connecting portion 101, and the width of the gap is 1 mm. The inner wall surface of the sealing oil plug 4 is in close contact with the outer wall surface of the fourth connecting portion 301.

[0033] One end of the sixth connecting portion 303 is provided with a second wing-shaped flange 8, and the second wing-shaped flange 8 is detachably connected to the sixth connecting portion 303. A plurality of second fixing bolts 10 are arranged at intervals on the second wing-shaped flange 8. The second wing-shaped flange 8 plays a connecting role and connects the spline shaft 2 with the corresponding power component.

[0034] During use, connect the first wing-shaped flange 5 and the second wing-shaped flange 8 with the corresponding components, and torque can be transmitted. During the working process, sealing and buffering and shock absorption are carried out through the shock pad and the sealing oil plug 4, ensuring the stability of the torque transmission process. A fully enclosed structure is formed by connecting the spline shaft housing 1 and the spline sleeve 3, preventing impurities from eroding the spline shaft 2 and enabling the spline shaft 2 to be suitable for harsh working environments.

[0035] Although the specific implementation manners of the present invention have been described above in conjunction with the drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. A spline shaft coupling device for a loader, characterized in that, It includes a spline shaft housing, a spline shaft is arranged inside the spline shaft housing, a first wing-shaped flange is arranged at one end of the spline shaft, and a first cross shaft is arranged on the first wing-shaped flange; a spline sleeve is arranged at one end of the spline shaft housing, the spline sleeve is inserted into the spline shaft housing, and a sealing oil plug is arranged at the clamping position between the spline sleeve and the spline shaft housing; a second wing-shaped flange is arranged at one end of the spline sleeve, a second cross shaft is arranged on the second wing-shaped flange, and a shock pad is arranged inside the spline sleeve.

2. The spline shaft coupling device for a loader according to claim 1, characterized in that, The spline shaft and the spline shaft housing are of an integral structure, and there is a gap between the spline shaft and the inner wall surface of the spline shaft housing.

3. The spline shaft coupling device for a loader according to claim 1, characterized in that, The spline sleeve is inserted into the gap between the spline shaft and the inner wall of the spline shaft housing.

4. The spline shaft coupling device for a loader according to claim 1, characterized in that, The spline shaft housing is divided into a first connecting part, a second connecting part and a third connecting part. One end of the first connecting part is the second connecting part, and one end of the second connecting part is the third connecting part.

5. The spline shaft coupling device for a loader according to claim 4, characterized in that, The width of the cross-section of the first connecting part is greater than that of the second connecting part, and the inner wall surface of the first connecting part is in close contact with the outer wall surface of the sealing oil plug.

6. The spline shaft coupling device for a loader according to claim 5, characterized in that, A first wing-shaped flange is arranged at one end of the third connecting part, the third connecting part is detachably connected to the first wing-shaped flange, and a plurality of first fixing bolts are arranged at intervals on the first wing-shaped flange.

7. The spline shaft coupling device for a loader according to claim 1, characterized in that, The spline sleeve includes a fourth connecting part, a fifth connecting part and a sixth connecting part. One end of the fourth connecting part is the fifth connecting part, and one end of the fifth connecting part is the sixth connecting part.

8. The spline shaft coupling device for a loader according to claim 7, characterized in that, The cross-section width of the fourth connecting part is smaller than that of the first connecting part, there is a gap between the outer wall surface of the fourth connecting part and the inner wall surface of the first connecting part, and the inner wall surface of the sealing oil plug is in close contact with the outer wall surface of the fourth connecting part.

9. The spline shaft coupling device for a loader according to claim 8, characterized in that A second wing-shaped flange is arranged at one end of the sixth connecting part, and the second wing-shaped flange is detachably connected to the sixth connecting part.

10. A spline shaft coupling device for a loader according to claim 9, characterized in that, A plurality of second fixing bolts are arranged at intervals on the second wing-shaped flange.

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