CN219840993U - Belt wheel transmission device - Google Patents

Abstract

The utility model provides a belt pulley transmission device which is connected to an output shaft of a motor, wherein the belt pulley transmission device comprises a belt pulley assembly and a supporting assembly, the belt pulley assembly comprises a belt pulley body, one side of the belt pulley body is provided with a shaft hole for connecting the output shaft, and the other side of the belt pulley body is provided with a bearing structure; the supporting assembly comprises a supporting rack and a supporting shaft, the supporting rack is located on one side, far away from the output shaft, of the belt wheel body, one end of the supporting shaft is fixedly arranged on the supporting rack, and the other end of the supporting shaft is connected with the bearing structure. The mechanical operation stability of the belt wheel is ensured under the condition that the whole size of the original motor is not changed, and the equipment investment cost is saved.

Description

A pulley transmission device

Technical field

The utility model relates to the technical field of power transmission, in particular to a pulley transmission device.

Background technique

Pulleys and other hub-type parts are widely used in situations where power is transmitted over long distances, such as textile and transmission machinery. In order to ensure the smooth operation of the machinery when used, such mechanical pulleys are often designed with large masses and large moments of inertia. Therefore, under many working conditions, there are high requirements for the strength of the motor shaft and bearings. Only the diameter of the motor rotating shaft reaches a certain size can it provide sufficient strength. When the motor's transmission shaft does not meet the conditions, it needs to be reordered. control the motor, which in turn leads to an increase in equipment investment costs.

Utility model content

Based on this, the purpose of this utility model is to provide a pulley transmission device to ensure the smooth operation of the pulley machinery and save equipment investment costs without changing the overall size of the original motor.

The utility model proposes a pulley transmission device, which is connected to the output shaft of the motor. The pulley transmission device includes:

Pulley assembly, the pulley assembly includes a pulley body, one side of the pulley body is provided with a shaft hole for connecting the output shaft, and the other side is provided with a bearing structure;

Support assembly, the support assembly includes a support stand and a support shaft. The support stand is located on the side of the pulley body away from the output shaft. One end of the support shaft is fixed on the support stand. , the other end is connected to the bearing structure.

The above-mentioned pulley transmission device improves the smoothness of the operation of the pulley machine by adding a bearing structure to the pulley body and setting a support stand on the side of the pulley body away from the output shaft for support. Specifically, when the motor is running When the temperature rises, the bearing structure can slide freely on the support shaft to compensate for the thermal expansion during operation. Secondly, the support shaft can also share part of the tension force to reduce the tension exerted by the belt on the output shaft. force, improves the overall load-bearing strength and stability, ensures the smooth operation of the pulley machinery without changing the overall size of the original motor, and saves equipment investment costs.

Further, in the pulley transmission device, the bearing structure includes a bearing and a bearing gland, a bearing chamber is provided on the side of the pulley body facing away from the shaft hole, and the bearing is provided on the bearing. In the chamber, the bearing gland is located at the opening of the bearing chamber.

Further, in the pulley transmission device, the bearing gland presses the outer ring of the bearing tightly, and the support shaft passes through the inner ring of the bearing.

Further, in the pulley transmission device, the bearing gland is an annular cover plate, the annular cover plate is provided with a plurality of annular array openings, and the opening edge of the bearing chamber is provided with a plurality of A screw hole corresponding to the opening.

Further, in the pulley transmission device, the bottom surface of the bearing chamber sinks to form an escape groove, and the escape groove corresponds to the inner ring of the bearing.

Further, in the pulley transmission device, the bottom surface of the escape groove is provided with a through hole, and the axis of the through hole is collinear with the axis of the output shaft.

Further, in the pulley transmission device, the support frame includes an integrally arranged horizontal plate part and a vertical plate part, and the horizontal plate part and the vertical plate part are perpendicular to each other, and the horizontal plate part is Two first strip holes are symmetrically provided on the plate portion.

Further, in the pulley transmission device, one end of the support shaft away from the pulley body is provided with a fixed plate, the fixed plate is symmetrically provided with two mounting holes, and the vertical plate portion is provided with There is a second strip hole corresponding to the mounting hole.

Further, in the pulley transmission device, reinforcing ribs are provided at the connection between the horizontal plate part and the vertical plate part.

Further, in the pulley transmission device, the motor is a disk motor.

Description of the drawings

Figure 1 is a schematic diagram of the overall layout of the pulley transmission device in the present utility model;

Figure 2 is an exploded view of the pulley transmission device of the present utility model;

Figure 3 is a cross-sectional view of the pulley body of the present utility model;

Figure 4 is a side view of the pulley body of the present utility model;

Figure 5 is an exploded view of the support assembly in the present utility model;

Description of main component symbols:

11. Motor; 12. Output shaft; 20. Pulley assembly; 21. Pulley body; 211. Shaft hole; 212. Bearing chamber; 213. Avoidance groove; 214. Through hole; 22. Bearing; 23. Bearing gland ; 30. Support component; 31. Support shaft; 32. Fixed plate; 33. Support stand; 331. Horizontal plate part; 332. Vertical plate part; 333. First strip hole; 334. Second strip hole ; 335. Installation hole; 40. Reinforcement rib; 50. Screw hole; 61. Belt; 62. Driven pulley.

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

In order to facilitate understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical," "horizontal," "left," "right" and similar expressions are used herein for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to Figures 1 to 3. The pulley transmission device in the present utility model is connected to the output shaft 12 of the motor 11. The pulley transmission device includes a pulley assembly 20 and a support assembly 30.

The above-mentioned pulley assembly 20 includes a pulley body 21. One side of the pulley body 21 is provided with a shaft hole 211 for connecting the output shaft 12, and the other side is provided with a bearing structure;

Specifically, the bearing structure includes a bearing 22 and a bearing gland 23. A bearing chamber 212 is provided on the side of the pulley body 21 facing away from the shaft hole 211. The bearing 22 is located in the bearing chamber 212. , the bearing gland 23 is provided at the opening of the bearing chamber 212. The outer ring of the bearing 22 has an interference fit with the bearing chamber 212 and is pressed and fixed by the bearing gland 23.

The above-mentioned support assembly 30 includes a support stand 33 and a support shaft 31. The support stand 33 is located on the side of the pulley body 21 away from the output shaft 12. One end of the support shaft 31 is fixed on the support. The other end of the stand 33 is inserted into the inner ring of the bearing 22 . In this embodiment, the support shaft 31 has no shoulder and only provides radial support for the inner ring of the bearing 22. The inner ring of the bearing 22 can slide axially on the support shaft 31 to compensate for the thermal expansion during operation.

In practical applications, the overall arrangement is shown in Figure 1. The entire device is connected to the mechanical driven pulley 62 through a belt 61. The tensioning force of the belt 61 is transmitted to the pulley body 21 and finally to the output shaft 12 of the motor 11. , and the support shaft 31 and the support stand 33 share a part of the tension force, reducing the tension force exerted by the belt 61 on the output shaft 12, and improving the overall load bearing strength and stability.

Specifically referring to FIGS. 3 and 4 , the bottom surface of the bearing chamber 212 is sunk to form an escape groove 213 , and the escape groove 213 corresponds to the inner ring of the bearing 22 . The bottom surface of the escape groove 213 is provided with a through hole 214 , and the axis of the through hole 214 is collinear with the axis of the output shaft 12 . In this embodiment, the escape groove 213 is used to avoid the inner ring of the bearing 22 to ensure that the inner ring of the bearing 22 can slide freely on the support shaft 31; on the other hand, the escape groove 213 is used to accommodate the pulley body. 21 is the bolt fixed on the output shaft 12 to prevent the nut part of the bolt from protruding and affecting the placement of the bearing 22.

It should be explained that a threaded hole is provided on the end face of the output shaft 12, and the bolt can be threadedly connected to the threaded hole after passing through the through hole 214 on the pulley body 21, so as to realize the connection between the pulley body 21 and the output shaft 12. Connection.

Specifically referring to FIG. 5 , the support stand 33 includes an integrally arranged horizontal plate portion 331 and a vertical plate portion 332 . The horizontal plate portion 331 and the vertical plate portion 332 are perpendicular to each other. Two first strip holes 333 are symmetrically provided on 331. It can be understood that the first strip hole 333 is used for passing bolts to fix the support stand 33 on the work surface.

Among them, the end of the support shaft 31 away from the pulley body 21 is provided with a fixed plate 32. The fixed plate 32 is symmetrically provided with two mounting holes 335, and the vertical plate portion 332 is provided with a hole corresponding to the said pulley body 21. The second strip hole 334 corresponds to the mounting hole 335. It can be understood that by aligning the mounting hole 335 with the second strip hole 334 and inserting bolts, the assembly between the support shaft 31 and the support stand 33 can be achieved.

Continuing to refer to FIG. 5 , reinforcing ribs 40 are provided at the connection between the horizontal plate portion 331 and the vertical plate portion 332 . To improve the structural strength of the support stand 33.

Specifically, as shown in FIG. 2 , the bearing gland 23 is an annular cover plate. The annular cover plate is provided with a plurality of annular array openings. The opening edge of the bearing chamber 212 is provided with a plurality of openings. The opening corresponds to the screw hole 50 . In the same way, by aligning the openings with the screw holes 50 and inserting screws, the bearing gland 23 can be assembled on the pulley body 21 .

In this embodiment, the motor 11 preferably uses a disc motor as the power source, but it is not limited to this. It can also be a three-phase asynchronous motor or other different types of motor 11 . It is understandable that since the disc motor has an axial magnetic field, the direction of increasing power is in the radial direction. Therefore, a very high-power motor can be made very flat, which is very suitable for occasions where the installation location is small. Compared with traditional radial magnetic field motors, disc motors are smaller in size, lighter in weight, and have shorter overall axial dimensions, which improves the integration of the drive device. At the same output power, its weight is higher than that of ordinary radial permanent motors. The magneto is about 30% lighter.

In addition, the shaft hole 211 in the pulley body 21 is a spline slot hole, and the output shaft 12 of the motor 11 is a spline shaft matching the spline slot hole.

In summary, the pulley transmission device in the above embodiments of the present invention realizes the mechanical operation of the pulley by adding a bearing structure in the pulley body and setting a support stand on the side of the pulley body away from the output shaft for support. Specifically, when the motor is running, as the temperature rises, the bearing structure can slide freely on the support shaft to compensate for the thermal expansion under operating conditions. Secondly, the support shaft can also share part of the tension force. It reduces the tensioning force exerted by the belt on the output shaft, improves the overall load-bearing strength and stability, ensures the smooth operation of the pulley machinery without changing the overall size of the original motor, and saves equipment investment costs.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several implementation modes of the present invention. The descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims (10)

1. A pulley transmission device, connected to the output shaft of the motor, characterized in that the pulley transmission device includes: Pulley assembly, the pulley assembly includes a pulley body, one side of the pulley body is provided with a shaft hole for connecting the output shaft, and the other side is provided with a bearing structure; Support assembly, the support assembly includes a support stand and a support shaft. The support stand is located on the side of the pulley body away from the output shaft. One end of the support shaft is fixed on the support stand. , the other end is connected to the bearing structure. 2. The pulley transmission device according to claim 1, wherein the bearing structure includes a bearing and a bearing gland, and a bearing chamber is provided on the side of the pulley body facing away from the shaft hole. The bearing is arranged in the bearing chamber, and the bearing gland is arranged at the opening of the bearing chamber. 3. The pulley transmission device according to claim 2, wherein the bearing gland presses the outer ring of the bearing tightly, and the support shaft penetrates the inner ring of the bearing. 4. The pulley transmission device according to claim 2, wherein the bearing gland is an annular cover plate, the annular cover plate is provided with a plurality of annular array openings, and the bearing chamber is The edge of the opening is provided with a plurality of screw holes corresponding to the openings. 5. The pulley transmission device according to claim 2, wherein the bottom surface of the bearing chamber sinks to form an escape groove, and the escape groove corresponds to the inner ring of the bearing. 6. The pulley transmission device according to claim 5, wherein the bottom surface of the escape groove is provided with a through hole, and the axis of the through hole is collinear with the axis of the output shaft. 7. The pulley transmission device according to claim 1, wherein the support frame includes an integrally arranged horizontal plate part and a vertical plate part, with a space between the horizontal plate part and the vertical plate part. Perpendicular to each other, two first strip holes are symmetrically provided on the horizontal plate portion. 8. The pulley transmission device according to claim 7, wherein a fixed plate is provided at one end of the support shaft away from the pulley body, and two mounting holes are symmetrically provided on the fixed plate. The vertical plate portion is provided with a second strip hole corresponding to the mounting hole. 9. The pulley transmission device according to claim 7, characterized in that reinforcing ribs are provided at the connection between the horizontal plate part and the vertical plate part. 10. The pulley transmission device according to claim 1, characterized in that the motor is a disk motor.