Friction balance wheel unit based on bearing drive

Abstract

This utility model relates to a friction-type swing wheel unit based on bearing transmission, belonging to the technical field of express sorting equipment. It replaces the traditional rubber-coated drive roller with a transmission bearing assembly, including a transmission bearing that is tangentially in contact with both the rubber-coated drive roller and the two rubber-coated driven rollers on both sides. The bearing is mounted on a symmetrical stepped support shaft with countersunk round holes and fixed by elastic retaining rings. Stepped support pins are inserted into the round holes at the bottom of the support shaft and bracket to ensure tight contact between the transmission bearing and the rollers. Rubber washers at the minimum diameter stepped surface of the support shaft are tightly fitted to the bracket to form a buffer. When the drive roller rotates, friction drives the transmission bearing to rotate, which in turn drives the driven rollers to move synchronously. This utility model utilizes the high wear resistance of the bearing to completely solve the problems of sliding friction wear, roller out-of-roundness, and abnormal noise caused by heavy objects pressing down on the driven rollers, significantly reducing operating noise and extending service life. It is suitable for swing wheel sorting machines in logistics sorting equipment.

Description

Technical Field

[0001] This utility model relates to the field of express sorting equipment technology, and in particular to a friction-type swing wheel unit based on bearing transmission. Background Technology

[0002] With the development of logistics sorting technology, the swing wheel sorting machine has emerged.

[0003] A swing wheel sorting machine is a type of guide wheel sorting equipment, mainly composed of a swing wheel unit, a servo swing module, and a frame. Based on instructions from the front-end information system, the servo swing module executes corresponding actions to rotate the swing wheel unit, completing the straight-line or left-right swing sorting action for packages.

[0004] Patent publication number CN216631636U discloses a unit structure for a friction-type swing wheel sorting machine. This unit structure has three rubber-coated rollers on the upper layer. The larger roller in the middle is a rubber-coated active electric roller, and the two rollers on either side are rubber-coated driven rollers. After the active roller rotates, it drives the rubber-coated drive rollers in contact with it to rotate together through friction. The rotation of the drive rollers, in turn, drives the rubber-coated driven rollers to rotate together through friction, thus achieving synchronous rotation of the three rollers on the upper layer of the friction unit, improving the swing wheel's ability to sort large and heavy items. This solution uses a pin and spring structure to achieve quick installation and removal of the unit cover. Adjusting the lifting rod by sliding it up and down within the lifting hole and then tightening the locking bolt allows for adjustment of the installation height of the lifting rod and cover. The protrusion height of the swing wheel can be adaptively adjusted according to the thickness of the package.

[0005] However, the aforementioned unit structure is mainly used for sorting large and heavy packages. It is easy for the upper rubber-coated driven roller to be stopped while the rubber-coated drive electric roller continues to rotate. When the rubber-coated drive roller and the rubber-coated driven roller stop together, the contact surface with the rubber-coated drive electric roller forms sliding friction, causing obvious wear marks on the rubber-coated drive roller and damaging its roundness. When it continues to rotate, the unit will produce obvious abnormal noise, causing the overall decibel level of the equipment to exceed the operating standard. Utility Model Content

[0006] To address the shortcomings of the existing production technology, the applicant provides a friction-type swing wheel unit based on bearing transmission. This unit uses bearing friction transmission instead of rubber-coated transmission rollers, avoiding wear marks on the transmission rubber-coated rollers caused by the driven roller being pressed down during the sorting of heavy items. This solves the problems of abnormal noise from the unit and excessively high overall decibel levels during equipment operation.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A friction-type balance wheel unit based on bearing transmission includes a balance wheel support, a balance wheel cover plate, a rubber-coated active electric roller, and a rubber-coated driven roller;

[0009] It also includes a transmission bearing assembly, which includes a transmission bearing and a transmission bearing support shaft. The transmission bearing support shaft is a symmetrical stepped shaft with countersunk holes at both ends. The transmission bearing is mounted on the transmission bearing support shaft and is axially fixed by a shaft elastic retaining ring.

[0010] One side of the transmission bearing is in tangential contact with the rubber-coated drive roller, and the other side of the transmission bearing is in tangential contact with the rubber-coated driven roller, so that the rubber-coated drive roller drives the transmission bearing to rotate through friction, and at the same time, the transmission bearing drives the rubber-coated driven roller to rotate through friction.

[0011] In one embodiment, there are two drive bearings, which are assembled from both ends of the drive bearing support shaft.

[0012] In one embodiment, a rubber washer is installed on the minimum diameter shaft of the transmission bearing support shaft.

[0013] In one embodiment, the rubber washer is installed at the minimum shaft diameter step surface of the transmission bearing support shaft, and the end of the rubber washer away from the step surface is in close contact with the balance wheel bracket.

[0014] In one embodiment, a stepped support pin is also included. The short shaft end of the stepped support pin is inserted into the countersunk hole of the transmission bearing support shaft, and the other end of the stepped support pin is inserted into the hole at the bottom of the balance wheel bracket to support the transmission bearing assembly in close contact with the rubber-coated drive roller and the rubber-coated driven roller.

[0015] In one embodiment, the upper layer of the balance wheel support is provided with three rubber-coated rollers, with the middle one being a rubber-coated active electric roller and the two sides being rubber-coated driven rollers.

[0016] In one embodiment, the balance wheel cover plate includes a rectangular groove structure and is bolted to the top of the balance wheel bracket, pressing down the rubber-coated active electric roller and the rubber-coated driven roller.

[0017] In one embodiment, the transmission bearing is a bearing structure, and the wear resistance of the transmission bearing material is higher than that of the rubber coating material of the rubber-coated drive electric roller.

[0018] In one embodiment, the friction wheel unit is configured in a wheel sorting machine.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model has a compact structure. Through the tangential contact between the transmission bearing and the rubber-coated active electric roller and the rubber-coated driven roller, the transmission bearing is made of a highly wear-resistant material with a hardness significantly higher than that of the rubber layer of the rubber-coated roller. When the driven roller is stopped by a heavy object, the transmission bearing usually stops rotating as well, while the rubber-coated active electric roller continues to rotate, forming sliding friction between the two. Because the wear resistance of the bearing material is higher than that of the rubber-coated active electric roller, there are no obvious wear marks on the surface of the transmission bearing. The wear of the rubber-coated active electric roller is uniform, and there are no obvious dents or other wear marks on the rubber surface. This solves the problem of abnormal noise after wear marks appear in the unit, and makes the overall decibel level of the swing wheel sorting machine meet the equipment requirements during operation.

[0021] This utility model also has the following advantages:

[0022] The transmission bearing support shaft of this utility model is a symmetrical stepped shaft with countersunk round holes at both ends. It is positioned in conjunction with stepped support pins. Rubber washers are installed on the minimum shaft diameter stepped surface, which are in close contact with the swing wheel bracket to form an elastic buffer. The stepped shaft structure ensures the coaxiality of the bearing, and the rubber washers absorb the pressure impact of the roller, reducing the vibration transmitted to the bracket and further reducing noise. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 for Figure 1 A diagram in the viewfinder.

[0025] Figure 3 This is a schematic diagram of the transmission bearing assembly of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the transmission bearing support shaft of this utility model.

[0027] The components include: 1. Balance wheel bracket; 2. Balance wheel cover plate; 3. Rubber-coated drive roller; 4. Rubber-coated driven roller; 5. Transmission bearing; 6. Transmission bearing support shaft; 7. Shaft elastic retaining ring; 8. Rubber gasket; 9. Step support pin. Detailed Implementation

[0028] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0029] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0032] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0033] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0034] like Figures 1-4 The accompanying drawing shows a schematic diagram of the structure of a friction wheel unit based on bearing transmission in one embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.

[0035] This application provides a friction-type balance wheel unit based on bearing transmission, comprising:

[0036] The balance wheel bracket 1 serves as a basic support structure, with three rubber-coated rollers on the upper layer. The middle roller is a rubber-coated active electric roller 3, and the two sides are rubber-coated driven rollers 4. Furthermore, the bottom of the bracket is provided with round holes for fixing the transmission bearing assembly.

[0037] The balance wheel cover plate 2 covers the balance wheel bracket 1 and uses a rectangular groove structure to press down the rubber-coated active electric roller 3 and the rubber-coated driven roller 4. It is fastened to the balance wheel bracket 1 with bolts to prevent the rollers from shifting.

[0038] The transmission bearing assembly includes a transmission bearing 5, a transmission bearing support shaft 6, a shaft elastic retaining ring 7, a rubber washer 8, and a stepped support pin 9.

[0039] In some embodiments, the transmission bearing support shaft 6 adopts a symmetrical stepped shaft design, with countersunk round holes machined at both ends, and a stepped surface formed at the minimum shaft diameter for installing rubber gaskets 8.

[0040] In some embodiments, there are two transmission bearings 5, which are assembled from both ends of the support shaft 6, with their inner rings closely attached to the stepped surface of the support shaft 6; the transmission bearings 5 ​​are axially fixed by the axial elastic retaining rings 7 being inserted into the grooves at the ends of the support shaft 6.

[0041] In some embodiments, the rubber gasket 8 is installed on the step surface of the minimum shaft diameter of the support shaft 6, with one end tightly against the step surface and the other end tightly against the balance wheel bracket 1, forming an elastic buffer layer.

[0042] In some embodiments, the short shaft end of the stepped support pin 9 is inserted into the countersunk round hole of the support shaft 6, and the long shaft end is inserted into the round hole at the bottom of the balance wheel bracket 1.

[0043] One side of the transmission bearing 5 is in tangential contact with the rubber-coated drive roller 3, and the other side of the transmission bearing 5 is in tangential contact with the rubber-coated driven roller 4, so that the rubber-coated drive roller 3 drives the transmission bearing 5 to rotate through friction, and at the same time, the transmission bearing 5 drives the rubber-coated driven roller 4 to rotate through friction.

[0044] In other embodiments, a balance wheel sorting machine is also provided, including the friction balance wheel unit described above.

[0045] In practical work, the power transmission path of this utility model is as follows: the rubber-coated active electric roller 3 is energized and rotates, driving the tangential transmission bearing 5 to rotate through friction; the transmission bearing 5 drives the rubber-coated driven roller 4 to rotate synchronously through friction.

[0046] Furthermore, the transmission bearing 5 is made of a highly wear-resistant material with a hardness higher than that of the roller coating layer, to avoid local dents or out-of-roundness.

[0047] The advantages of this invention under heavy-load conditions are as follows: when a heavy object stops the rubber-coated driven roller 4, the transmission bearing 5 usually stops rotating, while the rubber-coated active electric roller 3 continues to rotate, forming sliding friction between the two. However, because the wear resistance of the material of the transmission bearing 5 is higher than that of the rubber-coated active electric roller 3, there are no obvious wear marks on the surface of the transmission bearing 5. The rubber-coated active electric roller 3 wears evenly, and there are no obvious dents or other wear marks on the rubber-coated surface. This solves the problem of abnormal noise after wear marks appear in the unit, and makes the overall decibel level of the swing wheel sorting machine meet the equipment requirements during operation.

[0048] Furthermore, the rubber gasket 8 absorbs the pressure impact of the roller, reduces the vibration transmitted to the balance wheel bracket 1, and suppresses noise.

[0049] In summary, the present invention has a reasonable structure. Through the coordinated action of the transmission bearing 5, transmission bearing support shaft 6, shaft elastic retaining ring 7, rubber washer 8 and stepped support pin 9 in the transmission bearing assembly, rolling friction is used instead of sliding friction, which solves the problems of wear, abnormal noise and shortened life caused by the driven roller stopping when sorting heavy objects. It is suitable for high-load logistics sorting scenarios and improves the reliability and quietness of the equipment.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A friction-type balance wheel unit based on bearing transmission, characterized in that, It includes a balance wheel support (1), a balance wheel cover plate (2), a rubber-coated active electric roller (3), and a rubber-coated driven roller (4); It also includes a transmission bearing assembly, which includes a transmission bearing (5) and a transmission bearing support shaft (6). The transmission bearing support shaft (6) is a symmetrical stepped shaft with countersunk round holes at both ends. The transmission bearing (5) is mounted on the transmission bearing support shaft (6) and is axially fixed by a shaft elastic retaining ring (7). One side of the transmission bearing (5) is in tangential contact with the rubber-coated active electric roller (3), and the other side of the transmission bearing (5) is in tangential contact with the rubber-coated driven roller (4), so that the rubber-coated active electric roller (3) drives the transmission bearing (5) to rotate through friction, and at the same time, the transmission bearing (5) drives the rubber-coated driven roller (4) to rotate through friction.

2. The friction-type balance wheel unit based on bearing transmission according to claim 1, characterized in that, There are two transmission bearings (5), which are assembled from both ends of the transmission bearing support shaft (6).

3. A bearing drive based frictional balance wheel unit according to claim 2, characterized in that A rubber washer (8) is also installed on the minimum diameter shaft of the transmission bearing support shaft (6).

4. A bearing drive based frictional balance wheel unit according to claim 3, characterized in that The rubber washer (8) is installed on the minimum shaft diameter step surface of the transmission bearing support shaft (6), and the end of the rubber washer (8) away from the step surface is in close contact with the balance wheel bracket (1).

5. A bearing drive based frictional balance wheel unit according to claim 2, characterized in that It also includes a step support pin (9), the short shaft end of which is inserted into the countersunk round hole of the transmission bearing support shaft (6), and the other end of which is inserted into the round hole at the bottom of the swing wheel bracket (1) to support the transmission bearing assembly to be in close contact with the rubber-coated active electric roller (3) and the rubber-coated driven roller (4).

6. A bearing drive based frictional balance wheel unit according to claim 1, characterized in that Three rubber-coated rollers are provided on the upper layer of the balance wheel bracket (1), with the middle one being a rubber-coated active electric roller (3) and the two sides being rubber-coated driven rollers (4).

7. The friction-type balance wheel unit based on bearing transmission according to claim 1, characterized in that, The balance wheel cover plate (2) includes a rectangular groove structure and is bolted to the top of the balance wheel bracket (1) to press down the rubber-coated active electric roller (3) and the rubber-coated driven roller (4).

8. A bearing drive based frictional balance wheel unit according to claim 1, characterized in that The wear resistance of the material of the transmission bearing (5) is higher than that of the rubber-coated active electric roller (3).

9. A bearing drive based frictional balance wheel unit according to any of claims 1-8, characterized in that The friction-type balance wheel unit is configured in the balance wheel sorting machine.

Images