Heavy roller with built-in bearings
By setting up a multi-channel oil seal structure on the outside of the roller bearing, the problem of poor sealing effect of traditional built-in rollers is solved, and the life of the bearings and rollers is significantly improved.
Patent Information
- Application Number
- CN202420531496.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-19
AI Technical Summary
The traditional built-in drum has a small bearing capacity and poor bearing sealing effect, which affects the life of the bearing and drum.
A heavy-duty roller built-in bearing is designed. By providing an outer sealing cover and an inner sealing cover on the outside of the roller bearing, and a protruding structure is provided on the inner sealing cover to form a sealing gap, combining the first and second sealing rings to form a multiple oil seal to ensure good sealing and lubrication of the bearing.
It achieves a good sealing effect of bearings, protects the bearings, and extends the service life of the rollers.
Smart Images
Figure CN222573409U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of belt conveyors, in particular to a heavy-duty roller with built-in bearings. Background Art
[0002] Heavy-duty rollers are key components in belt conveyors. Rollers are generally divided into external rollers and internal rollers according to whether the roller bearings are inside or outside the drum skin. Traditional internal rollers generally have the receiving plate inside the drum skin, with a small load-bearing capacity, and the roller bearing has a poor sealing effect, which affects the life of the bearing and, in turn, the service life of the roller. Utility Model Content
[0003] In view of the above-mentioned shortcomings, the technical problem to be solved by the utility model is: to provide a heavy-duty roller with built-in bearing, the bearing in the roller has a good sealing effect, effectively protects the bearing, and increases the life of the roller.
[0004] In order to solve the above technical problems, the technical solution of the utility model is:
[0005] A heavy-duty roller with built-in bearings comprises a cylinder body and a roller shaft penetrating the cylinder body from the middle, hubs are respectively arranged at both ends of the cylinder body, a bearing is arranged between the hub and the roller shaft, a sleeve is also arranged on the roller shaft, the outer sides of the sleeves are respectively against the bearing and the hub, an outer sealing cover and an inner sealing cover are sequentially arranged on the outer side of the bearing from the inside to the outside, a protruding structure is arranged on the inner side of the inner sealing cover, the protruding structure is arranged in the outer sealing cover, a rotation gap is left between the inner sealing cover and the outer sealing cover, and the outer sealing cover is fixedly connected to the hub, The inner sealing cover is fixedly connected to the roller shaft; a first sealing ring is arranged between the sleeve and the wheel hub; the inner sealing cover, the outer sealing cover and the roller shaft together form a sealing gap, and a gap sealing ring is arranged in the sealing gap; a first oil filling port is arranged on the inner sealing cover, a first plug is arranged in the first oil filling port, and the first oil filling port is connected to the sealing gap; a second oil filling port is arranged on the end surface of the roller shaft, a second plug is arranged in the second oil filling port, and an oil circuit is also arranged in the roller shaft, and the oil circuit connects the second oil filling port and the bearing.
[0006] Preferably, a second sealing ring is provided between the inner sealing cover and the drum shaft.
[0007] Preferably, a recessed structure is provided on the outer sealing cover, the recessed structure accommodates the protruding structure, and the shape of the recessed structure matches the shape of the protruding structure.
[0008] Preferably, the protruding structure is a two-stage boss arranged near the top of the inner sealing cover, and the recessed structure is two grooves.
[0009] Preferably, a support ring is provided inside the cylinder.
[0010] Preferably, a rubber layer is provided on the outer sides of the cylinder and the hub.
[0011] Preferably, at least one first threaded hole is provided on the inner sealing cover, and each of the first threaded holes is extended along the radial direction of the drum shaft.
[0012] Preferably, at least one second threaded hole is provided on the outer sealing cover, and each of the second threaded holes is extended along the axial direction of the drum shaft.
[0013] After adopting the above technical solution, the beneficial effects of the utility model are:
[0014] The utility model discloses a heavy-duty roller with built-in bearing, comprising a cylinder, a roller shaft, a wheel hub, a bearing and a sleeve, an outer side of the bearing is provided with an outer sealing cover and an inner sealing cover, an inner side of the inner sealing cover is provided with a protruding structure, the protruding structure is arranged in the outer sealing cover, a rotation gap is left between the inner sealing cover and the outer sealing cover, the outer sealing cover is fixedly connected to the wheel hub, and the inner sealing cover is fixedly connected to the roller shaft; a first sealing ring is arranged between the sleeve and the wheel hub; the inner sealing cover, the outer sealing cover and the roller shaft jointly form a sealing gap, a gap sealing ring is arranged in the sealing gap; a first oil filling port is arranged on the inner sealing cover, a first plug is arranged in the first oil filling port, and the first oil filling port is connected with the sealing gap; a second oil filling port is arranged on the end surface of the roller shaft, a second plug is arranged in the second oil filling port, an oil circuit is also arranged in the roller shaft, and the oil circuit connects the second oil filling port and the bearing. It can be seen that each bearing of the utility model has at least two oil seals, one of which is a gap sealing ring installed between the roller shaft, the outer sealing cover and the inner sealing cover. Since the inner sealing cover is provided with a first oil filling port, grease can be injected through the first oil filling port to lubricate the gap sealing ring. Since the gap sealing ring can be lubricated, when the roller shaft rotates, the gap sealing ring is not easy to wear, thereby achieving a better sealing effect of the bearing; the other is the first sealing ring installed between the wheel hub and the sleeve. Since there is an additional sleeve between the first sealing ring and the roller shaft, the grease coming out of the oil circuit of the roller shaft can not only lubricate the bearing, but also lubricate the first sealing ring, so the first sealing ring is not easy to wear, thereby effectively protecting the bearing and greatly improving the life of the roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a structural schematic diagram of a heavy-duty roller with built-in bearing in the utility model;
[0016] Figure 2It is a structural schematic diagram of the outer and inner sealing covers of the utility model;
[0017] Figure 3 It is a structural schematic diagram of the inner sealing cover in the utility model;
[0018] Figure 4 yes Figure 1 A local enlarged schematic diagram of the middle A;
[0019] In the figure: 1-cylinder, 2-outer sealing cover, 20-recessed structure, 3-inner sealing cover, 30-first oil filling port, 31-protruding structure, 32-first threaded hole, 4-bearing, 5-roller shaft, 50-second oil filling port, 51-oil circuit, 6-first sealing ring, 7-second sealing ring, 8-wheel hub, 9-rubber layer, 10-sleeve, 11-support ring, 12-gap sealing ring, 13-rotational gap, 14-sealing gap, 21-second threaded hole. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0021] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0023] like Figure 1 and Figure 4As shown, a heavy-duty roller with built-in bearings includes a cylinder 1 and a roller shaft 5. The roller shaft 5 runs through the cylinder 1 from the middle, that is, the cylinder 1 and the roller shaft 5 are coaxially arranged; hubs 8 are respectively arranged at both ends of the cylinder 1, and specifically, the hubs 8 are welded to both ends of the cylinder 1; a bearing 4 is arranged between the hub 8 and the roller shaft 5, and specifically, the bearing 4 is installed on the hub 8. After the hub 8 is connected to the cylinder 1, the bearing 4 is located inside the cylinder 1. This installation method increases the rigidity of the roller shaft 5, and the roller shaft 5 is not easy to deform. At the same time, a sleeve 10 is also arranged on the roller shaft 5, and the outer sides of the sleeve 10 are respectively against the bearing 4 and the hub 8. Specifically, the outer end face of the sleeve 10 is against the inner end face of the bearing 4, and the top end face of the sleeve 10 is against the hub 8. The sleeve 10 is located on the inner side of the roller shaft 5 relative to the bearing 4.
[0024] like Figures 1 to 4 As shown together, the outer side of the bearing 4 in the utility model is provided with an outer sealing cover 2 and an inner sealing cover 3 in sequence from the inside to the outside, and a protruding structure 31 is provided on the inner side of the inner sealing cover 3, and the protruding structure 31 is arranged in the outer sealing cover 2. Specifically, a recessed structure 20 is provided on the outer sealing cover 2, and the recessed structure 20 contains the protruding structure 31, and a rotation gap 13 is left between the inner sealing cover 3 and the outer sealing cover 2, and the shape of the recessed structure 20 is adapted to the shape of the protruding structure 31, so as to form a relatively regular rotation gap 13. When the grease enters the rotation gap 13 through the sealing gap, sealing is achieved. In a preferred embodiment, the protruding structure 31 is a two-stage boss arranged near the top of the inner sealing cover 3, and the recessed structure 20 is two grooves. Of course, the protruding structure 31 and the recessed structure 20 are not limited to those listed above.
[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the inner sealing cover 3 is fixedly connected to the drum shaft 5. Specifically, at least one first threaded hole 32 is provided on the inner sealing cover 3, and each first threaded hole 32 is extended along the radial direction of the drum shaft 5. The outer sealing cover 2 is fixedly connected to the wheel hub 8. Specifically, at least one second threaded hole 21 is provided on the outer sealing cover 2, and each second threaded hole 21 is extended along the axial direction of the drum shaft 5. When the drum shaft 5 rotates, the outer sealing cover 2 rotates with it, and the inner sealing cover 3 does not rotate because it is fixed on the drum shaft 5.
[0026] like Figure 1 and Figure 4 As shown, a first sealing ring 6 is arranged between the sleeve 10 and the wheel hub 8; the inner sealing cover 3, the outer sealing cover 2 and the roller shaft 5 together form a sealing gap 14, and a gap sealing ring 12 is arranged in the sealing gap 14; in this embodiment, a second sealing ring 7 is arranged between the inner sealing cover 3 and the roller shaft 5, wherein the first sealing ring 6, the gap sealing ring 12 and the second sealing ring 7 form three oil seals.
[0027] like Figure 1 and Figure 3 As shown, the inner sealing cover 3 in the utility model is provided with a first oil filling port 30, a first plug is provided in the first oil filling port 30, the first oil filling port 30 is connected with the sealing gap 14, and the sealing gap 14 is connected with the rotating gap 13. At the same time, the end surface of the roller shaft 5 of the utility model is provided with a second oil filling port 50, a second plug is provided in the second oil filling port 50, and an oil path 51 is also provided in the roller shaft 5, the oil path 51 is connected with the second oil filling port 50 and the bearing 4, and grease can be conveniently injected through the second oil filling port 50. In addition, the first plug and the second plug can be, but are not limited to, bolts.
[0028] like Figures 1 to 4 As shown, the heavy-duty roller of the utility model has at least two oil seals at each bearing 4, one of which is a gap sealing ring 12 installed between the roller shaft 5, the outer sealing cover 2 and the inner sealing cover 3. Since the inner sealing cover 3 is provided with a first oil filling port 30, the grease injected through the first oil filling port 30 can lubricate the gap sealing ring 12. Since the gap sealing ring 12 can be lubricated, when the roller shaft 5 rotates, the gap sealing ring 12 is not easily worn, thereby achieving a better sealing effect of the bearing 4.
[0029] There is also an oil seal on the inner side of the bearing 4, which is the first sealing ring 6 installed between the wheel hub 8 and the sleeve 10. Because there is an additional sleeve 10 between the second sealing ring 7 and the roller shaft 5, and the grease coming out of the oil path 51 of the roller shaft 5 can lubricate both the bearing 4 and the second sealing ring 7, the second sealing ring 7 is not easily worn, thereby effectively protecting the bearing 4 and greatly improving the life of the roller.
[0030] like Figure 1 and Figure 4 As shown, in this embodiment, Figure 1 As shown, a support ring 11 is arranged inside the cylinder 1 of the utility model, and the support ring 11 reduces the deformation of the cylinder skin and greatly improves the rigidity of the cylinder 1.
[0031] like Figure 1 As shown, the outer sides of the cylinder body 1 and the hub 8 in the present invention are provided with a rubber layer 9, and the outer side of the cylinder skin can be coated with rubber to form the rubber layer 9, and the rubber layer 9 can effectively protect the cylinder skin of the cylinder body 1.
[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications made within the spirit and principles of the present invention, improvements to the same heavy-duty roller with built-in bearings, etc., should be included in the protection scope of the present invention.
Claims
1. A heavy-duty roller with built-in bearing, comprising a cylinder and a roller shaft passing through the cylinder from the middle, hubs are respectively arranged at both ends of the cylinder, bearings are arranged between the hubs and the roller shaft, and a sleeve is also arranged on the roller shaft, and the outer sides of the sleeve are respectively against the bearing and the hub, characterized in that: The outer side of the bearing is provided with an outer sealing cover and an inner sealing cover in sequence from the inside to the outside, the inner side of the inner sealing cover is provided with a protruding structure, the protruding structure is arranged inside the outer sealing cover, a rotation gap is left between the inner sealing cover and the outer sealing cover, the outer sealing cover is fixedly connected to the wheel hub, and the inner sealing cover is fixedly connected to the drum shaft; A first sealing ring is arranged between the shaft sleeve and the wheel hub; The inner sealing cover, the outer sealing cover and the drum shaft together form a sealing gap, and a gap sealing ring is arranged in the sealing gap; The inner sealing cover is provided with a first oil filling port, a first plug is provided in the first oil filling port, and the first oil filling port is communicated with the sealing gap; A second oil filling port is arranged on the end surface of the roller shaft, a second plug is arranged in the second oil filling port, and an oil circuit is also arranged in the roller shaft, the oil circuit connecting the second oil filling port and the bearing.
2. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: A second sealing ring is arranged between the inner sealing cover and the drum shaft.
3. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: The outer sealing cover is provided with a recessed structure, the recessed structure accommodates the protruding structure, and the shape of the recessed structure matches the shape of the protruding structure.
4. The heavy-duty roller with built-in bearing according to claim 3, characterized in that: The protruding structure is a two-stage boss arranged near the top end of the inner sealing cover, and the recessed structure is two grooves.
5. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: A supporting ring is arranged inside the cylinder.
6. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: The outer sides of the cylinder and the hub are provided with rubber layers.
7. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: The inner sealing cover is provided with at least one first threaded hole, and each of the first threaded holes is extended along the radial direction of the drum shaft.
8. The heavy-duty roller with built-in bearing according to claim 1, characterized in that: The outer sealing cover is provided with at least one second threaded hole, and each of the second threaded holes is extended along the axial direction of the drum shaft.