Flange hollow shaft for compact connection of winding drum

Abstract

The utility model discloses a flange hollow shaft for compact connection of winding drums, which comprises a flange and a connecting shaft, the flange is welded at the end of the connecting shaft, a cavity is arranged at one end of the connecting shaft for fixing the flange, and a spline and an oil storage tank are arranged in the cavity. The utility model has the beneficial effects that by adopting the internal and external spline pair design structure and the bearing support structure, the floating transmission form between the flange shaft and the motor shaft can be realized, and the transmission can be realized without a rigidly connected coupler; meanwhile, the bearing supporting structure can counteract axial force and radial force from the winding drum, and circular run-out and axial movement of the flange shaft are restrained; and the arrangement of the oil storage tank can keep lubrication of spline connection all the time, and a good lubrication environment is provided for the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of the floating connection between a permanent magnet motor and a drum, and particularly relates to a flange hollow shaft for compact connection of a drum. Background Technique

[0002] When transforming a crane hoist, a permanent magnet motor is used to replace the existing asynchronous motor. The permanent magnet motor has high efficiency, high power density, low noise, and high reliability. Compared with the replaced asynchronous motor, it can effectively reduce the connection structure between the motor and the drum and reduce the volume of the overall transmission structure.

[0003] The connection between the drum and the permanent magnet motor becomes the key to realizing the transformation. The existing connection between the drum and the asynchronous motor is realized through a flange and a connecting shaft. Therefore, only the threaded holes of the drum can be utilized, while the output end of the permanent magnet motor for transformation is a spline structure, and the two cannot be directly connected. Summary of the Invention

[0004] The purpose of the embodiment of the utility model is to provide a flange hollow shaft for compact connection of a drum, aiming at solving the technical problem that the existing connection between the drum and the asynchronous motor is realized through a flange and a connecting shaft. Therefore, only the threaded holes of the drum can be utilized, while the output end of the permanent magnet motor for transformation is a spline structure, and the two cannot be directly connected.

[0005] The embodiment of the utility model is implemented as follows:

[0006] A flange hollow shaft for compact connection of a drum, the flange hollow shaft includes a flange and a connecting shaft. The flange is welded to the end of the connecting shaft. A cavity is provided at one end of the connecting shaft for fixing the flange, and a spline and an oil storage groove are provided in the cavity.

[0007] Furthermore, a through hole is provided at the center of the flange, and the end of the connecting shaft is inserted into the through hole. An annular welding point is provided at the mating part of the through hole and the connecting shaft to weld the connecting shaft and the flange together.

[0008] Furthermore, connecting holes are evenly distributed on the circumference of the flange. The connecting holes are matched with the threaded holes on the circumference of the connecting plate, and bolts are provided in the connecting holes to fix the flange and the connecting plate together.

[0009] Furthermore, a cavity is provided at the right end of the connecting shaft. A spline is provided on the inner cylindrical surface of the cavity, and an oil storage groove is provided at the end of the opening of the cavity.

[0010] Further, the wall of the cavity is provided with a first oil pipe, and the end of the first oil pipe is provided with a first plug for blocking the process hole for machining the first oil pipe; the end of the first oil pipe is also provided with an oil nozzle for supplying oil to the first oil pipe; the other end of the first oil pipe is communicated with a second oil pipe, and the end of the second oil pipe is provided with a second plug for blocking the process hole for machining the second oil pipe; the other end of the second oil pipe is communicated with the cavity 11 to provide lubricating oil for the cavity.

[0011] Further, a notch is provided at the non-opening end of the cavity, and the notch is communicated with the second oil pipe.

[0012] The positive effect of the present utility model is that: it is welded to the end of the connecting shaft through a flange, and a cavity is provided at one end of the connecting shaft where the flange is fixed. A spline is provided in the cavity. The flange is connected to the drum, and the spline is matched with the output shaft of the permanent magnet motor, realizing the connection between the output shaft of the permanent magnet motor and the drum. At the same time, the cavity is embedded inside the connecting shaft, shortening the connection distance and saving the connection space. The setting of the oil storage tank can always maintain the lubrication of the spline connection and provide a good lubrication environment for the tradition. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the application scenario of the flange hollow shaft with a compact connection of the drum of the present utility model;

[0014] Figure 2 is Figure 1 a cross-sectional view of the flange hollow shaft with a compact connection of the drum of the present utility model shown in ;

[0015] Figure 3 is Figure 2 a left view of the flange hollow shaft with a compact connection of the drum of the present utility model shown in ;

[0016] Figure 4 is Figure 3 a sectional view of the cavity of the flange hollow shaft with a compact connection of the drum of the present utility model shown in ;

[0017] Legend Explanation: 1 - Permanent magnet motor, 2 - Support seat, 3 - Bearing, 4 - Flange, 5 - Connection hole, 6 - Drum, 7 - Connecting plate, 8 - Flange hollow shaft, 9 - Welding point, 10 - Connecting shaft, 11 - Cavity, 12 - Oil storage tank, 13 - First plug, 14 - Oil nozzle, 15 - First oil pipe, 16 - Second plug, 17 - Second oil pipe, 18 - Reinforcing rib, 19 - Spline. Detailed Embodiment

[0018] The present utility model will be described in detail below with reference to the drawings and specific embodiments:

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] As Figures 1 to 4 shown, it is a structural diagram of a flange hollow shaft with a compact connection for a drum provided by an embodiment of the present utility model. The flange hollow shaft includes a flange 4 and a connecting shaft 10. The flange 4 is welded to the end of the connecting shaft 10. A cavity 11 is provided at one end of the connecting shaft 10 for fixing the flange 4. A spline 19 and an oil storage groove 12 are provided in the cavity 11 to provide lubrication for the spline connection.

[0022] In the embodiment of the present utility model, the flange 4 is welded to the end of the connecting shaft 10, and a cavity 11 is provided at one end of the connecting shaft 10 for fixing the flange 4. A spline 19 is provided in the cavity 11. The flange 4 is connected to the drum, and the spline is matched with the output shaft of the permanent magnet motor, realizing the connection between the output shaft of the permanent magnet motor and the drum. At the same time, the cavity 11 is embedded inside the connecting shaft 10, shortening the connection distance and saving the connection space. By adopting the internal and external spline pair design structure and the bearing support structure, a floating transmission form between the flange shaft and the motor shaft can be realized, and a rigid coupling is not required to achieve transmission. At the same time, the bearing support structure can offset the axial force and radial force from the drum, suppressing the circular runout and axial movement of the flange shaft. The setting of the oil storage groove 12 can always maintain the lubrication of the spline connection, providing a good lubrication environment for the transmission.

[0023] Specifically, as Figures 1 to 4 shown, a flange hollow shaft with a compact connection for a drum, the flange hollow shaft includes a flange 4 and a connecting shaft 10. The flange 4 is welded to the end of the connecting shaft 10. A cavity 11 is provided at one end of the connecting shaft 10 for fixing the flange 4. A spline 19 and an oil storage groove 12 are provided in the cavity 11 to provide lubrication for the spline connection;

[0024] Among them, the output shaft of the permanent magnet motor 1 is provided with a spline structure, and this spline structure is matched with the spline 19; a connecting plate 7 is provided at the end of the drum 6, and the connecting plate 7 is connected to the flange 4 by bolts;

[0025] A through hole is provided at the center of the flange 4, and the end of the connecting shaft 10 is inserted into the through hole. An annular welding point 9 is provided at the mating part of the through hole and the connecting shaft to weld the connecting shaft and the flange together;

[0026] Connecting holes 5 are evenly distributed on the circumference of the flange 4, and the connecting holes are matched with the threaded holes on the circumference of the connecting plate 7. Bolts are provided in the connecting holes 5 to fix the flange 4 and the connecting plate 7 together;

[0027] A cavity 11 is provided at the right end of the connecting shaft 10. The inner cylindrical surface of the cavity 11 is provided with a spline 19. An oil storage groove 12 is provided at the end of the open end of the cavity, which can store the grease in the spline gap in the groove to prevent the grease from flowing out due to extrusion factors;

[0028] The wall of the cavity 11 is provided with a first oil pipe 15. The end of the first oil pipe 15 is provided with a first plug 13 for blocking the process hole for machining the first oil pipe 15; an oil nozzle 14 is also provided at the end of the first oil pipe 15 for supplying oil to the first oil pipe; the other end of the first oil pipe 15 is communicated with a second oil pipe 17. The end of the second oil pipe 17 is provided with a second plug 16 for blocking the process hole for machining the second oil pipe 17; the other end of the second oil pipe 17 is communicated with the cavity 11 to provide lubricating oil for the cavity;

[0029] A notch is provided at the non-open end of the cavity 11, and the notch is communicated with the second oil pipe 17 to facilitate oil supply.

[0030] Through the first oil pipe 15, the second oil pipe 17, and the oil storage groove 12, real-time lubrication is provided for the spline connection to meet the requirements of transmission lubrication.

[0031] The flange hollow shaft is designed with a grease injection oil circuit, the first oil pipe 15, the second oil pipe 17, and the oil storage groove 12. In a very small space, the grease is injected from the shaft end to the inside of the spline, and the grease is lubricated from the inner hole to the spline teeth, forming an oil film on the spline surface to protect the spline.

[0032] The foregoing has broadly outlined some aspects and features of the various embodiments, which should be construed as merely illustrative of the various potential applications. Other beneficial results can be obtained by applying the disclosed information in different ways or by combining the various aspects of the disclosed embodiments. Based on the scope defined by the claims, a more comprehensive understanding of other aspects can be obtained by referring to the detailed description of the exemplary embodiments in conjunction with the drawings.

[0033] The above embodiments have described the present utility model in detail. Of course, the above description is not a limitation on the present utility model, and the present utility model is not limited to the above examples either. Changes, modifications, additions, deletions, or substitutions made by those skilled in the art within the scope of the essence of the present utility model also fall within the protection scope of the present utility model.

Claims

1. A flange hollow shaft with a compact connection for a reel, characterized in that, The flange hollow shaft includes a flange and a connecting shaft. The flange is welded to the end of the connecting shaft. One end of the connecting shaft where the flange is fixed is provided with a cavity, and a spline and an oil storage groove are arranged in the cavity. A through hole is provided at the center of the flange, and the end of the connecting shaft is inserted into the through hole. An annular welding point is provided at the mating part of the through hole and the connecting shaft to weld the connecting shaft and the flange together.

2. The flange hollow shaft with a compact connection of a reel according to claim 1, characterized in that, Connecting holes are evenly distributed on the circumference of the flange. The connecting holes are matched with the threaded holes on the circumference of the connecting plate. Bolts are arranged in the connecting holes to fix the flange and the connecting plate together.

3. The flange hollow shaft with a compact connection of a reel according to claim 2, characterized in that, A cavity is provided at the right end of the connecting shaft. A spline is provided on the inner cylindrical surface of the cavity, and an oil storage groove is provided at the end of the open end of the cavity.

4. A flange hollow shaft with a compact connection for a reel, according to any one of claims 1 to 3, characterized in that A first oil pipe is provided on the wall of the cavity. A first screw plug is provided at the end of the first oil pipe to block the process hole for machining the first oil pipe. An oil nozzle is also provided at the end of the first oil pipe for supplying oil to the first oil pipe. The other end of the first oil pipe is communicated with a second oil pipe. A second screw plug is provided at the end of the second oil pipe to block the process hole for machining the second oil pipe. The other end of the second oil pipe is communicated with the cavity to provide lubricating oil for the cavity.

5. The flange hollow shaft with a compact connection for a reel according to claim 4, characterized in that, A notch is provided at the non-open end of the cavity, and the notch is communicated with the second oil pipe.

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