A synchronous belt wheel device

Abstract

The utility model discloses a synchronous pulley device relates to cable stranding equipment technical field, two check ring, a plurality of screw no.

Description

Technical Field

[0001] This utility model relates to the technical field of cable stranding equipment, and more specifically to a synchronous pulley device. Background Technology

[0002] The transmission system of the cable stranding equipment adopts a combination of unified transmission and individual transmission. The unified transmission part is mainly used to drive the winch, non-metallic wrapping, and traction wheel. This is to ensure that the stranding process has a fixed stranding pitch and wrapping pitch as required by the cable manufacturing process. It is driven by an AC motor, which transmits power to the ground shaft through a double-output shaft main drive gearbox, giving the ground shaft a rotational speed. One end of the ground shaft is driven by a driving synchronous pulley, which in turn drives a synchronous belt. The synchronous belt then transmits power to a driven synchronous pulley mounted on the spline of the stranding gearbox. The driven synchronous pulley drives the spline to transmit power to the stranding gearbox. The other end transmits power to the ordinary wrapping device, the steel ladle device, and the traction device after two reversals. Each component and the ground shaft are connected by a pin coupling, which is convenient for installation and allows users to easily replace the required components when adjusting the process line, giving it a certain degree of flexibility and facilitating technical modifications.

[0003] Depending on factors such as load, speed, and environmental conditions, cast iron or 45# steel is a suitable material for the driven synchronous pulley mounted on the splined shaft of the winch gearbox. If a cast iron or 45# steel integral driven synchronous pulley with internal splines is used on the splined shaft of the winch gearbox, the integral driven synchronous pulley itself is relatively heavy, which can easily cause plastic deformation at the connection between the synchronous pulley and the splined shaft. This can prevent it from connecting perfectly with the driving synchronous pulley mounted on the ground shaft through the synchronous belt, thus failing to generate higher friction and even failing to drive the winch gearbox to rotate smoothly and stably. Utility Model Content

[0004] The purpose of this utility model is to provide a synchronous belt pulley device in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: a synchronous pulley device, comprising two retaining rings, multiple screws, a spline shaft, two sets of deep groove ball bearings, a retaining ring for the bore, a synchronous pulley, multiple screws, a spline bushing, a first isolation sleeve, and a second isolation sleeve. The two sets of deep groove ball bearings, the spline bushing, the first isolation sleeve, and the second isolation sleeve are all fitted onto the outer side of the spline shaft. The synchronous pulley is fitted onto the outer side of the two sets of deep groove ball bearings. The two retaining rings are respectively installed on the opposite sides of the two sets of deep groove ball bearings.

[0006] Preferably, the synchronous pulley has external teeth a on its outer side, and multiple screw holes are provided on the left and right sides of the synchronous pulley. Multiple screws pass through the corresponding retaining rings and are threadedly connected to the corresponding screw holes.

[0007] Preferably, the synchronous pulley has bosses fixed on both sides, and the two bosses are respectively connected to the inner holes of the two retaining rings with clearance fit. The synchronous pulley has a hole in the center, and the inner side of the hole is connected to the outer rings of the two deep groove ball bearings with transition fit.

[0008] Preferably, the inner wall of the first hole is provided with a groove, and an elastic retaining ring for the hole is installed inside the groove. The inner side of the synchronous pulley is machined with a second hole and an internal tooth. The diameter of the second hole is smaller than the diameter of the first hole, and the diameter of the internal tooth is smaller than the diameter of the second hole. The first hole, the second hole, and the internal tooth are interconnected and their central axes coincide. The spline bushing is provided with an external tooth b, which meshes with the internal tooth.

[0009] Preferably, the spline bushing has an internal spline that mates with the external spline of the spline shaft. The spline bushing also has multiple stepped holes along its circumference, which are connected to multiple screws via threaded connections.

[0010] Preferably, the outer side of the spline shaft is fitted with an isolation sleeve one and an isolation sleeve two. The isolation sleeve one is located between the spline shaft sleeve and one of the deep groove ball bearings, and the isolation sleeve two is located between the two deep groove ball bearings.

[0011] The beneficial effects of this utility model are as follows: This utility model has a simple structure, is easy to manufacture, and is convenient to install, disassemble, and use. It has the advantages of being easy to promote and easy to install. Through the use of this utility model, the driven synchronous pulley made of cast iron or 45# steel is installed on the spline shaft of the winch gearbox. The connection between the pulley and the spline shaft is not prone to plastic deformation, so that it can be perfectly connected with the driving synchronous pulley installed on the ground shaft through the synchronous belt, generating higher friction and ensuring smooth and stable rotation of the winch gearbox. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the present invention;

[0013] Figure 2 This is a cross-sectional schematic diagram of the synchronous belt pulley of this utility model;

[0014] Figure 3 This is a cross-sectional schematic diagram of the splined bushing of this utility model.

[0015] Reference numerals: 1. Retaining ring; 1.1. Large inner hole; 1.2. Groove surface; 1.3. Small inner hole; 2. Screw one; 3. Splined shaft; 4. Deep groove ball bearing; 5. Elastic retaining ring for bore; 6. Synchronous pulley; 6.1. Threaded hole; 6.2. Boss; 6.3. Hole one; 6.4. Groove; 6.5. External tooth a; 6.6. Hole two; 6.7. Internal tooth; 7. Screw two; 8. Splined bushing; 8.1. Internal spline; 8.2. External tooth b; 8.3. Stepped hole; 9. Isolation sleeve one; 10. Isolation sleeve two. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Please see Figure 1-3 The present invention provides the following technical solution: a synchronous belt pulley device, comprising a retaining ring 1, a screw 2, a splined shaft 3, a deep groove ball bearing 4, a retaining ring for the hole 5, a synchronous belt pulley 6, a screw hole 6.1, a boss 6.2, a hole 1 6.3, a groove 6.4, an external tooth a 6.5, a hole 2 6.6, an internal tooth 6.7, a screw 2 7, a splined bushing 8, an internal spline 8.1, an external tooth b 8.2, a stepped hole 8.3, a first isolation sleeve 9, and a second isolation sleeve 10.

[0019] The synchronous belt pulley assembly consists of two retaining rings 1, multiple screws 1 2, two sets of deep groove ball bearings 4, a retaining ring for the bore 5, a synchronous belt pulley 6, multiple screws 2 7, a splined bushing 8, a first isolation sleeve 9, and a second isolation sleeve 10.

[0020] The outer end of the synchronous pulley 6 is machined with external teeth a6.5, which allows the synchronous belt connected to it to rotate in a specific direction. The convex tooth design of the synchronous pulley 6 and the special tooth profile of the connected synchronous belt can better transmit torque, ensuring a smoother and tighter connection between the shaft and the gearbox. Multiple identical threaded holes 6.1 are symmetrically and evenly machined on both ends of the synchronous pulley 6 in the circumferential direction. The center lines of the multiple threaded holes 6.1 on both ends of the synchronous pulley 6 coincide with the center lines of multiple identical holes machined on the circumferential direction of the retaining rings 1. By tightening the screws 2 that pass through the multiple holes on the circumferential direction of the retaining rings 1 and are threaded into the threaded holes 6.1, the two retaining rings 1 can be fastened to the two ends of the synchronous pulley 6. The inner diameter of the retaining rings 1 fastened to the two ends of the synchronous pulley 6 is clearance-fitted with the outer diameter of the boss 6.2 of the synchronous pulley 6. The retaining rings 1 fastened to the two ends of the synchronous pulley 6 are aligned with the synchronous belt... The timing belt connected to pulley 6 is limited in the left and right directions to prevent it from running off-track and to improve its service life. Hole 6.3 of the timing pulley 6 is fitted with the outer ring of the deep groove ball bearing 4 using a transition fit. A groove 6.4 is machined on hole 6.3 of the timing pulley 6, and an elastic retaining ring 5 is inserted into the groove 6.4 to limit the axial position of the outer rings of the two sets of deep groove ball bearings 4. Hole 6.6 is machined inside the timing pulley 6. The inner diameter of hole 6.6 is smaller than that of hole 6.3, and the end face formed by hole 6.6 and hole 6.3 limits the axial position of the outer rings of the two sets of deep groove ball bearings 4. Internal teeth 6.7 are also machined inside the timing pulley 6. The diameter of internal teeth 6.7 is smaller than that of hole 6.6, which facilitates the machining of internal teeth 6.7. The internal teeth 6.7 of the timing pulley 6 mesh with the external teeth b8.2 of the splined bushing 8. The tooth width and module of internal teeth 6.7 and external teeth b8.2 are the same.

[0021] The splined bushing 8 has an internal spline 8.1 machined inside, which mates with the external spline of the splined shaft 3. Multiple stepped holes 8.3 are also evenly machined along the circumference of the splined bushing 8. The larger holes of the stepped holes 8.3 are clearance-fitted with the cylindrical heads of screws 7. The smaller holes of the stepped holes 8.3 are machined as threaded holes, which connect with the external threads of screws 7. By tightening the multiple screws 7 that are threaded into the stepped holes 8.3, the splined bushing 8 can be fastened to the splined shaft 3. The stepped holes 8.3 need to be machined at the major diameter position of the internal spline 8.1, so that the effect of fastening the splined bushing 8 to the splined shaft 3 with multiple screws 7 is better.

[0022] The inner ring of the deep groove ball bearing 4 and the splined shaft 3 have a transition fit, while the splined shaft 3, which mates with the inner ring of the deep groove ball bearing 4, has a clearance fit with both the first isolation sleeve 9 and the second isolation sleeve 10. Adding the second isolation sleeve 10 between the two sets of deep groove ball bearings 4 effectively adjusts the internal and external clearances of the deep groove ball bearing 4, ensuring that the deep groove ball bearing 4 operates in its optimal condition and extending its service life. Adding the first isolation sleeve 9 between the deep groove ball bearing 4 and the splined shaft sleeve 8 limits the axial position of the inner ring of the deep groove ball bearing 4 and the splined shaft sleeve 8.

[0023] As a further improvement of this utility model, if a timing belt tensioning device is added between the driving timing pulley on the ground shaft and the driven timing pulley on the splined shaft of the winch gearbox, it is convenient to increase the range of timing belt length selection, and the timing belt can be more perfectly connected with the driving and driven timing pulleys, which can further effectively improve the reliability and stability of the timing pulley device.

[0024] Working principle and usage process of this utility model:

[0025] 1. Based on the dimensions of the driven synchronous pulleys on each strand gearbox of the cable stranding equipment, the dimensions of the driving synchronous pulley on the ground shaft, the dimensions of the spline shaft on the strand gearbox, and the position dimensions of each transmission component, and in conjunction with the above technical solutions, design a drawing of a synchronous pulley device that meets the actual installation requirements.

[0026] 2. Based on the design drawings of a synchronous belt pulley device, process the retaining rings 1, synchronous belt pulleys 6, splined bushings 8, isolation sleeves 1 and 2 10 that meet the actual requirements, and prepare the required screws 1 2, multiple sets of deep groove ball bearings 4, multiple elastic retaining rings 5 ​​for holes, and multiple screws 2 7; in addition, modify or reprocess the splined shaft 3 on the winch gearbox required for the synchronous belt pulley device according to the installation requirements of the design drawings.

[0027] 3. Next, according to the drawing requirements of one type of synchronous belt pulley device, assemble the components of multiple sets of one type of synchronous belt pulley device in sequence according to the drawing requirements.

[0028] 4. When the machine is stopped, first install the splined shafts 3 on the winch gearbox required for the modification or reprocessing of the synchronous pulley device into place. Then, install the components of the multiple sets of synchronous pulley devices onto the splined shafts 3 in sequence according to the drawings. Connect the driven synchronous pulleys on each winch gearbox to the driving synchronous pulleys on the ground shaft according to the installation requirements through the required synchronous belts.

[0029] 5. The installation of a synchronous pulley device modified on the cable stranding equipment is now complete. After all preparations for starting the machine are completed, it can be started normally.

[0030] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A synchronous pulley device, comprising two retaining rings (1), multiple screws (2), a spline shaft (3), two sets of deep groove ball bearings (4), a retaining ring for the bore (5), a synchronous pulley (6), multiple screws (7), a spline bushing (8), a first isolation sleeve (9), and a second isolation sleeve (10), wherein the two sets of deep groove ball bearings (4), the spline bushing (8), the first isolation sleeve (9), and the second isolation sleeve (10) are all fitted on the outer side of the spline shaft (3), and the synchronous pulley (6) is fitted on the outer side of the two sets of deep groove ball bearings (4), and the two retaining rings (1) are respectively installed on the opposite side of the two sets of deep groove ball bearings (4).

2. The synchronous belt pulley device according to claim 1, characterized in that: The synchronous pulley (6) has an external tooth a (6.5) on its outer side. Multiple screw holes (6.1) are opened on the left and right sides of the synchronous pulley (6). Multiple screws (2) pass through the corresponding retaining rings (1) and are threadedly connected to the corresponding screw holes (6.1).

3. The synchronous belt pulley device according to claim 1, characterized in that: The synchronous pulley (6) has bosses (6.2) fixed on its left and right sides. The two bosses (6.2) are respectively connected to the inner holes of the two retaining rings (1) with clearance fit. The synchronous pulley (6) has a hole (6.3) in the center. The inner side of the hole (6.3) is connected to the outer ring of the two deep groove ball bearings (4) with transition fit.

4. A synchronous belt pulley device according to claim 3, characterized in that: The inner wall of the first hole (6.3) is provided with a groove (6.4), and an elastic retaining ring (5) for the hole is installed inside the groove (6.4). The inner wall of the synchronous pulley (6) is machined with a second hole (6.6) and an internal tooth (6.7). The diameter of the second hole (6.6) is smaller than the diameter of the first hole (6.3), and the diameter of the internal tooth (6.7) is smaller than the diameter of the second hole (6.6). The first hole (6.3), the second hole (6.6), and the internal tooth (6.7) are interconnected and their central axes coincide. The spline bushing (8) is provided with an external tooth b (8.2), which meshes with the internal tooth (6.7).

5. A synchronous belt pulley device according to claim 1, characterized in that: The spline bushing (8) is provided with an internal spline (8.1), which is connected to the external spline of the spline shaft (3). The spline bushing (8) is also provided with multiple stepped holes (8.3) in the circumferential direction, which are threaded to multiple screws (7).

6. A synchronous belt pulley device according to claim 1, characterized in that: The outer side of the spline shaft (3) is fitted with an isolation sleeve one (9) and an isolation sleeve two (10). The isolation sleeve one (9) is located between the spline shaft sleeve (8) and one of the deep groove ball bearings (4), and the isolation sleeve two (10) is located between the two deep groove ball bearings (4).

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