Novel transmission shaft connecting structure and loader

Abstract

The utility model relates to a novel transmission shaft connecting structure and a loader, and belongs to the technical field of transmission shaft assemblys.The novel transmission shaft connecting structure comprises a transmission shaft and flanges connected to the two ends of the transmission shaft, the transmission shaft is a rigid connecting shaft, the flanges comprise a connecting flange and a spline flange, and the connecting flange is fixedly connected with an assembly part; the spline flange is connected with the assembly part and can axially move along the transmission shaft; the flange in one assembly part is arranged to be the spline flange matched through the spline, so that the assembly part is provided with an axially movable structure, and the spline flange connected with the transmission shaft is utilized to ensure that the length of the transmission shaft does not need to be considered by moving the spline flange under different mounting conditions; the overall length of the transmission shaft between the assembly parts is shortened, transmission shaft installation between the two assembly parts is achieved, arrangement and installation of the whole machine are facilitated, and meanwhile the transmission shaft can keep good working performance.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of transmission shaft assembly, and particularly relates to a novel transmission shaft connecting structure and a loader. BACKGROUND

[0002] The statements herein are provided only to complement the background of the present disclosure and are not necessarily prior art.

[0003] The loader is a heavy machinery with strong adaptability and can adapt to various working environments. The key assembly parts such as the engine and the gearbox of the loader, and the gearbox and the drive axle are connected through the transmission shaft. These transmission shafts are usually designed with a certain amount of expansion to maintain good performance under different working conditions. Therefore, when installing, it is necessary to ensure that the transmission shaft is installed at its shortest length. In a small space, the positions of the two assembly parts to be connected often need to be fixed at this time, and the distance between the two assembly parts will be less than the shortest length of the commonly used transmission shaft after compression, resulting in that the transmission shaft cannot be installed with the assembly parts on both sides. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present disclosure is to provide a novel transmission shaft connecting structure and a loader, which can at least solve one of the above technical problems.

[0005] To achieve the above purpose, one or more embodiments of the present disclosure provide a novel transmission shaft connecting structure, which comprises a transmission shaft and flanges connected to both ends of the transmission shaft, the transmission shaft is a rigid connecting shaft with a fixed length, the flange comprises a connecting flange and a spline flange, one end of the transmission shaft is rigidly connected with the connecting flange, and the other end is rigidly connected with the spline flange.

[0006] Further, the connecting flange and the spline flange are connected with the assembly parts on both sides of the transmission shaft, the connecting flange is fixedly connected with the assembly flange of the assembly part; the spline flange is connected with the rotating shaft of the assembly part and realizes axial movement along the rotating shaft of the assembly part.

[0007] Further, the end of the spline flange connected with the rotating shaft is sequentially provided with a first stepped platform, a second stepped platform and a third stepped platform provided with an external spline.

[0008] Further, a spline sleeve is arranged on the spline flange, a through hole is arranged in the middle of the spline sleeve, and an internal spline matched with the external spline of the rotating shaft is arranged inside the through hole.

[0009] Further, an oil seal seat is arranged on the outside of the spline sleeve, and an oil seal is arranged in the oil seal seat.

[0010] Further, the rotating shaft sleeve is arranged in the outer shell of the assembly part.

[0011] Further, the outer shell is provided with a bearing chamber for limiting the installation position of the bearing.

[0012] Further, the first stepped platform is provided with a bearing, and the second stepped platform is provided with a locking nut in threaded connection with the second stepped platform.

[0013] Further, the through hole of the spline sleeve is provided with a sealing cover.

[0014] Another aspect of the embodiments of the present disclosure provides a loader assembly shaft connecting structure.

[0015] The beneficial effects of one or more technical solutions above are:

[0016] The present disclosure sets the transmission shaft as a rigid connecting shaft with a fixed length, and the transmission shaft is connected with the assembly parts on both sides through spline flanges and connecting flanges respectively. The fixed length transmission shaft also has the characteristics of axial movement by matching the spline flange with the external spline in the assembly part, and the distance between the assembly parts on both sides of the transmission shaft can be adjusted. The spline flange connected with the transmission shaft ensures the installation of the transmission shaft between the two assembly parts by moving the spline flange when facing different installation conditions. The length of the transmission shaft does not need to be considered, so that the overall length of the transmission shaft between the assembly parts can be shortened, thereby facilitating the arrangement and installation of the whole machine, and the transmission shaft can maintain good working performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application, serve to explain the application, and do not constitute limitations on the application.

[0018] Figure 1 It is a front view of the overall connecting structure in one or more embodiments of the present disclosure.

[0019] Figure 2 It is a front view of the overall connecting structure in one or more embodiments of the present disclosure. Figure 1 It is a partial enlarged sectional view of A in one or more embodiments of the present disclosure.

[0020] In the drawings, 1 is a transmission shaft; 2 is a spline flange; 3 is a connecting flange; 4 is an outer shell; 5 is a bearing; 6 is a locking nut; 7 is an oil seal seat; 8 is an oil seal; 9 is a sealing cover; 10 is a rotating shaft; 11 is a first stepped platform; 12 is a second stepped platform; 13 is a third stepped platform. DETAILED DESCRIPTION

[0021] As Figures 1-2As shown, the embodiment provides a new type of transmission shaft connecting structure and a loader, which comprises a transmission shaft 1 and a flange connected at both ends of the transmission shaft 1, the transmission shaft 1 is a rigid connecting shaft with fixed length, the flange comprises a connecting flange 3 and a spline flange 2, one end of the transmission shaft 1 is rigidly connected with the connecting flange 3, and the other end is rigidly connected with the spline flange 2.

[0022] The connecting flange 3 and the spline flange 2 are both connected with assembly parts on both sides of the transmission shaft 1, wherein the connecting flange 3 is fixedly connected with the assembly flange of the assembly part, and the spline flange 2 can be axially moved on the assembly flange of the assembly part.

[0023] As shown, Figure 2 The end of the spline flange 2 connected with the shaft 10 is sequentially provided with a first stepped platform 11, a second stepped platform 12 and a third stepped platform 13 provided with external splines.

[0024] The spline flange 2 is provided with a spline sleeve, the spline sleeve is provided with a through hole penetrating in the middle, and the inside of the through hole is provided with internal splines matched with the external splines of the shaft 10; the spline flange 2 is connected with the external splines and axially moves along the shaft 10, the moving allowance of the spline flange 2 on the shaft 10 is not more than 10mm; which ensures the efficient connection and torque transmission capacity between the shaft 10 and the spline flange 2, and also ensures the axial movement between the shaft 10 and the spline flange 2, ensuring the stability and reliability of the connection.

[0025] The outside of the spline sleeve is provided with an oil seal seat 7, and the inside of the oil seal seat 7 is provided with an oil seal 8.

[0026] Specifically, as shown, Figure 2 The oil seal 8 is arranged between the spline sleeve and the oil seal seat 7, which ensures the close fit and sealing effect between the spline sleeve and the oil seal seat 7, thereby effectively preventing the leakage of lubricating oil inside the assembly.

[0027] As shown, Figure 2 The shaft 10 is sleeved in the outer shell 4 of the assembly part, and the connection mode of transition fit ensures that the shaft 10 can retain enough gap for rotation between the shaft 10 and the outer shell 4, and the bearing chamber for installing the bearing 5 is also arranged inside the outer shell 4 of the assembly part, which is used to limit and fix the installation position of the bearing 5, so as to ensure that the bearing 5 can be correctly installed in the appropriate position.

[0028] The bearing 5 is arranged on the first stepped platform 11, and the locking nut 6 is arranged on the second stepped platform 12, and the locking nut 6 is threadedly connected with the second stepped platform 12.

[0029] Specifically, the bearing 5 is in interference fit with the first stepped platform 11, ensuring the close connection between the two, and the rotating clearance between the bearing 5 and the rotating shaft 10 can be adjusted through the locking nut 6 arranged on the second stepped platform 12, so that the rotating flexibility of the rotating shaft 10 can be adjusted.

[0030] The through hole of the spline sleeve is provided with a sealing cover 9, which can effectively block dust and impurities from the outside and prevent these particulate matters from entering the inside of the spline sleeve. In this way, the bearing 5 can be prevented from being disturbed by dust during operation, so as to maintain its smooth and efficient rotating performance.

[0031] The embodiment also provides a loader comprising the connecting structure of the loader assembly piece transmission shaft.

[0032] The working principle of the utility model is as follows:

[0033] The transmission shaft 1 is arranged as a rigid connection shaft with a fixed length, and the transmission shaft 1 is connected with the assembly pieces on both sides through the spline flange 2 and the connecting flange 3 respectively. The fixed-length transmission shaft 1 also has the characteristics of axial movement through the cooperation of the spline flange 2 and the external spline in the assembly piece, so that the distance between the assembly pieces on both sides of the transmission shaft 1 can be adjusted. The spline flange 2 connected with the transmission shaft 1 ensures that the transmission shaft 1 can be installed between the two assembly pieces by moving the spline flange 2 when facing different installation conditions. The length of the transmission shaft 1 does not need to be considered, so that the overall length of the transmission shaft 1 between the assembly pieces can be shortened.

[0034] Although the specific embodiments of the present disclosure are described above with reference to the drawings, the present disclosure is not limited to the above description. It should be understood by those skilled in the art that various modifications or changes can be made to the technical solutions of the present disclosure without creative labor, and these modifications or changes are still within the protection scope of the present disclosure.

Claims

1. A novel driveshaft connection structure, characterized by, The transmission shaft and the flanges connected at both ends of the transmission shaft, the transmission shaft is a rigid connection shaft with fixed length, the flanges include a connecting flange and a spline flange, one end of the transmission shaft is rigidly connected with the connecting flange, and the other end is rigidly connected with the spline flange.

2. A novel drive shaft connection structure according to claim 1, characterized in that, The connecting flange and the spline flange are connected with assembly parts on both sides of the transmission shaft, the connecting flange is fixedly connected with an assembly flange of the assembly part, and the spline flange is connected with a rotating shaft of the assembly part and is axially moved along the rotating shaft of the assembly part.

3. A novel driveshaft connection structure according to claim 2, characterized in that, An end of the spline flange connected with the rotating shaft is sequentially provided with a first stepped platform, a second stepped platform and a third stepped platform provided with external splines.

4. A novel propeller shaft connection structure according to claim 1, characterized in that, The spline flange is provided with a spline sleeve, a through hole is arranged in the middle of the spline sleeve, and internal splines matched with the external splines of the rotating shaft are arranged in the through hole.

5. A novel propeller shaft connection structure according to claim 4, characterized in that, An oil seal seat is arranged on the outside of the spline sleeve, and an oil seal is arranged in the oil seal seat.

6. A novel propeller shaft connection structure according to claim 2, wherein The rotating shaft sleeve is arranged in a shell of the assembly part.

7. A novel propeller shaft connection structure according to claim 6, characterized in that A bearing chamber is arranged in the shell, and the bearing chamber is used for limiting the installation position of the bearing.

8. A novel propeller shaft connection structure according to claim 3, characterized in that, A bearing is arranged on the first stepped platform, and a locking nut is arranged on the second stepped platform, and the locking nut is threadedly connected with the second stepped platform.

9. A novel propeller shaft connection structure according to claim 4, characterized in that, A sealing cover is arranged in the through hole of the spline sleeve.

10. A loader characterized by A novel transmission shaft connecting structure comprising any one of the above claims 1-9.

Images