An ultra-long and high-strength load-bearing roller device with self-sealing function

Abstract

The present invention discloses an extra-long and high-strength load-bearing roller device with a self-sealing function, which is composed of a plurality of extra-long rollers, wherein the extra-long rollers include a hollow roller, two connecting shaft groups and two support assemblies. The extra-long and high-strength load-bearing roller device with a self-sealing function described in the present invention is designed in a split manner so that the load-bearing roller can be suitable for any large-span conveyor. The sealing assembly is sleeved on the connecting shaft group, and the connecting shaft group can rotate and slide relative to the sealing assembly. At the same time, the sealing assembly can seal the conveyor housing. When the hollow roller is deformed due to thermal expansion and contraction, the connecting shaft groups at both ends thereof can be translated on the support assembly to adapt to the deformation of the hollow roller. At the same time, the sealing assembly can always maintain the sealing state of the conveyor housing, thereby reducing the air leakage rate of the conveyor, improving the drying or cooling effect of the material on the conveyor belt, reducing the consumption of electricity and heat energy, and effectively reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying, and more particularly to an ultra-long and high-strength load-bearing roller device with a self-sealing function. Background Art

[0002] At present, high-temperature materials or materials containing water are synchronously cooled or dried at high temperature during transportation, mainly using technologies such as steel belt conveyors, chain grate conveyors, and chain plate conveyors. With the continuous increase in the capacity of single generator sets and the output requirements of equipment in the industrial transportation field, the working width of conveyors is also increasing, and the amount of materials that need to be dried or cooled has also increased significantly. This requires that the length of the carrying rollers under the material-bearing working layer of the conveyor be increased accordingly, and the air leakage rate of the equipment itself be reduced as much as possible to improve the cooling or drying efficiency.

[0003] Currently, due to the use of full-length solid shafts for load-carrying rollers and the significant increase in conveyor spans, the load-carrying rollers often sag or collapse in the middle due to the weight of the materials, the solid shafts, the rollers themselves, and high temperatures, causing equipment downtime. Furthermore, because conveyors have numerous moving and static components, existing conveyor technologies often experience air leakage rates exceeding 10%, resulting in low cooling and drying efficiencies, resulting in significant waste of electricity and heat energy, and posing significant risks and cost losses to customers in terms of production safety.

[0004] Therefore, it is necessary to propose an ultra-long and high-strength load-bearing roller device with a self-sealing function to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present invention provides an extra-long and high-strength load-bearing roller device with a self-sealing function, which is composed of a number of extra-long rollers. The extra-long rollers include a hollow roller, two connecting shaft groups and two support assemblies; the connecting shaft group is arranged at the end of the hollow roller, and the connecting shaft group passes through the side wall of the conveyor shell and is connected to the support assembly. A sealing assembly is provided on the connecting shaft group, and the sealing assembly is connected to the side wall of the conveyor shell.

[0007] Preferably, the connecting shaft group includes a short shaft and a connecting assembly; one end of the short shaft is connected to the inner wall of the hollow roller through the connecting assembly, the other end of the short shaft is connected to the support assembly shaft, and the sealing assembly is arranged on the short shaft and connected to the side wall of the conveyor housing.

[0008] Preferably, the connecting assembly includes a plurality of supporting flanges, the supporting flanges are arranged on the short shaft, and the outer walls of the supporting flanges are connected to the inner wall of the hollow roller.

[0009] Preferably, the sealing assembly includes a pressure plate, a pressure cover, a self-lubricating rotating shaft and an elastic member; the pressure plate and the self-lubricating rotating shaft are both mounted on the short shaft, and the self-lubricating rotating shaft is connected to the pressure plate through the pressure cover, the pressure plate abuts against the side wall of the conveyor housing, and the two ends of the elastic member are respectively connected to the support assembly and the pressure cover.

[0010] Preferably, a sealing ring is provided on the pressure plate.

[0011] Preferably, a lubricant is provided in the self-lubricating rotating shaft.

[0012] Preferably, the lubricant is a graphite filler.

[0013] Preferably, a reset ring is further provided in the self-lubricating rotating shaft, and the reset ring is provided between the graphite filler and the inner wall of the self-lubricating rotating shaft.

[0014] Preferably, the graphite filler is formed by splicing a plurality of sector-shaped graphites into an annular graphite, and the inner wall of the annular graphite abuts against the short axis, and the outer wall of the annular graphite abuts against the inner wall of the reset ring.

[0015] Preferably, a lubricating layer with a friction coefficient greater than that of graphite is provided in the fan-shaped graphite, the lubricating layer is stacked in the fan-shaped graphite, and the annular graphite composed of the fan-shaped graphite with the lubricating layer has a lubricating layer that spirally surrounds the inner wall of the annular graphite to the outer wall of the annular graphite.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] The ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention greatly reduces the mass of the load-bearing roller through the hollow roller, thereby reducing the influence of its own weight on the sagging of its middle part. Because the hollow roller and the conveyor belt are always in a state of relative rotation, the design of the hollow structure can still withstand the gravity brought by the conveyor belt and the material. The connecting shaft group is arranged at both ends of the hollow roller and passes through the side wall of the conveyor shell. The support assembly can be arranged outside the conveyor shell, which is convenient for maintenance and replacement. At the same time, the split design makes this load-bearing roller suitable for any large-span conveyor. The sealing assembly is sleeved on the connecting shaft group, and the connecting shaft group can rotate and slide relative to the sealing assembly. At the same time, the sealing assembly can seal the conveyor shell. When the hollow roller is deformed due to thermal expansion and contraction, the connecting shaft groups at both ends can be translated on the support assembly to adapt to the deformation of the hollow roller. At the same time, the sealing assembly can always maintain the sealing state of the conveyor shell, thereby reducing the air leakage rate of the conveyor, improving the drying or cooling effect of the material on the conveyor belt, reducing the consumption of electricity and heat energy, and effectively reducing production costs.

[0018] The other advantages, objectives and features of the ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention will be reflected in part through the following description, and will also be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic structural diagram of the ultra-long and high-strength load-bearing roller device with a self-sealing function described in the present invention.

[0021] Figure 2 This is a cross-sectional structural diagram of the connecting shaft group in the ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention.

[0022] Figure 3 This is a cross-sectional structural diagram of the support flange in the ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention.

[0023] Figure 4 This is a cross-sectional view of the ultra-long and high-strength load-bearing roller device with a self-sealing function described in the present invention.

[0024] Figure 5 This is a schematic cross-sectional view of the fan-shaped graphite in the ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention.

[0025] Figure 6This is a schematic diagram of the graphite filler in the self-lubricating rotating shaft of the ultra-long and high-strength load-bearing roller device with self-sealing function described in the present invention.

[0026] In the figure: 1 hollow roller, 2 connecting shaft group, 21 short shaft, 22 connecting assembly, 23 supporting flange, 3 supporting assembly, 4 sealing assembly, 41 pressure plate, 42 pressure cover, 43 self-lubricating rotating shaft, 44 elastic member, 45 sealing ring, 5 reset ring, 6 sector graphite, 7 lubricating layer. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0028] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0029] like Figures 1-6 As shown, the present invention provides an extra-long and high-strength load-bearing roller device with a self-sealing function, which is composed of a plurality of extra-long rollers. The extra-long roller includes a hollow roller 1, two connecting shaft groups 2 and two support assemblies 3; the connecting shaft group 2 is arranged at the end of the hollow roller 1, and the connecting shaft group 2 passes through the side wall of the conveyor shell and is connected to the support assembly 3. A sealing assembly 4 is provided on the connecting shaft group 2, and the sealing assembly 4 is connected to the side wall of the conveyor shell.

[0030] The working principle and beneficial effects of the above technical solution: Through the design of the above structure, the hollow roller 1 greatly reduces the mass of the load-bearing roller, thereby reducing the influence of its own weight on the sagging of its middle part. Because the hollow roller 1 and the conveyor belt are always in a state of relative rotation, the design of the hollow structure can still withstand the gravity brought by the conveyor belt and the material. The connecting shaft group 2 is arranged at both ends of the hollow roller 1 and passes through the side wall of the conveyor shell. The support component 3 can be arranged outside the conveyor shell, which is convenient for maintenance and replacement. At the same time, the split design makes the load-bearing roller can be It is suitable for any large-span conveyor. The sealing component 4 is sleeved on the connecting shaft group 2. The connecting shaft group 2 can rotate and slide relative to the sealing component 4. At the same time, the sealing component 4 can seal the conveyor shell. When the hollow roller 1 is deformed due to thermal expansion and contraction, the connecting shaft groups 2 at both ends can be translated on the supporting component 3 to adapt to the deformation of the hollow roller 1. At the same time, the sealing component 4 can always maintain the sealing state of the conveyor shell, thereby reducing the air leakage rate of the conveyor, improving the drying or cooling effect of the material on the conveyor belt, reducing the consumption of electricity and heat energy, and effectively reducing production costs.

[0031] In one embodiment, the connecting shaft assembly 2 includes a short shaft 21 and a connecting assembly 22. One end of the short shaft 21 is connected to the inner wall of the hollow roller 1 via the connecting assembly 22, and the other end of the short shaft 21 is connected to the support assembly 3. The sealing assembly 4 is disposed on the short shaft 21 and connected to the side wall of the conveyor housing. The connecting assembly 22 includes several support flanges 23, which are disposed on the short shaft 21, and the outer walls of the support flanges 23 are connected to the inner wall of the hollow roller 1. The sealing assembly 4 includes a pressure plate 41, a pressure cover 42, a self-lubricating rotating shaft 43, and an elastic member 44. The pressure plate 41 and the self-lubricating rotating shaft 43 are both sleeved on the short shaft 21, and the self-lubricating rotating shaft 43 is connected to the pressure plate 41 via the pressure cover 42. The pressure plate 41 abuts the side wall of the conveyor housing. The ends of the elastic member 44 are respectively connected to the support assembly 3 and the pressure cover 42. A sealing ring 45 is provided on the pressure plate 41. A lubricant is provided in the self-lubricating rotating shaft 43. The lubricant is a graphite filler.

[0032] The working principle and beneficial effects of the above technical solution: Through the design of the above structure, the short shaft 21 on the left side of the hollow roller 1 is welded and fixed to the connecting component 22 on the left side. The connecting component 22 can be a hollow cylindrical support, and its outer wall is clearance-matched with the inner wall of the hollow roller 1. Then, the short shaft 21 and connecting component 22 welded together are inserted as a whole into the left end of the hollow roller 1, and then the outer wall of the connecting component 22 is fixedly welded to the inner wall of the hollow roller 1. The structural form of the connecting shaft group 2 on the right side of the hollow roller 1 is the same as that on the left side. The fixed connection method between the short shaft 21 and the connecting component 22 and the connecting component 22 and the hollow roller 1 is not limited to welding, and can also be in the form of keys, embedded screws, etc.

[0033] The connecting assembly 22 can also be composed of a plurality of supporting flanges 23. Taking the connecting shaft assembly 2 on the left as an example, Figure 3 As shown, the short shaft 21 on the left is fixedly welded to the two support flanges 23 on the left. The support flange 23 is a hollow circle, and its outer wall is clearance-fitted with the inner wall of the hollow roller 1. Then, the short shaft 21 and support flange 23 welded together are inserted as a whole into the left end of the hollow roller 1. Thereafter, the outer wall of the support flange 23 is fixedly welded to the inner wall of the hollow roller 1. The structural form of the connecting shaft group 2 on the right side of the hollow roller 1 is the same as that on the left side. The number of support flanges 23 can be set according to the weight of the material conveyed by the conveyor and the width of the conveyor. One or more support flanges 23 can be used.

[0034] The present invention eliminates the solid shaft that runs the entire width of existing conveyor rollers and instead adopts a hollow structure. This significantly reduces the mass of the middle portion of the hollow roller 1 and the overall mass, saving manufacturing costs. Furthermore, the hollow structure allows the length of the hollow roller 1 to be further extended according to project needs, increasing the conveyor belt working surface, significantly improving the conveyor's carrying capacity, and increasing the contact area between the conveyed material and the drying medium (or cooling medium), significantly improving drying or cooling efficiency.

[0035] In addition, the left and right sides of the hollow roller 1 of the present invention respectively adopt a short axis 21 structure, which significantly reduces the processing difficulty, precision requirements, and coaxiality requirements (the existing through-axis length is generally more than 3 meters). In addition, due to the use of an embedded cylindrical connecting component 22 (or support flange 23) for support, the force arm on both sides of the hollow roller 1 is increased, thereby increasing the load-bearing strength of the hollow roller 1.

[0036] The sealing assembly 4 can always be tightly attached to the side wall of the conveyor housing through the pressure plate 41 and the sealing ring 45 under the action of the elastic member 44. As the hollow roller 1 is deformed due to thermal expansion and contraction, the short shaft 21 will be displaced relative to the self-lubricating rotating shaft 43 and the support assembly 3. The elastic member 44 can make the pressure plate 41 always fit on the side wall of the conveyor housing, ensuring the airtightness between the pressure plate 41 and the conveyor housing.

[0037] There is no need to design fixed connecting bolts between the pressure plate 41 and the conveyor housing. The whole composed of the pressure plate 41, the sealing ring 45, the pressure cover 42 and the self-lubricating rotating shaft 43 is in a sliding sealing state in real time under the action of the elastic member 44 according to the operating conditions of the conveyor, which significantly reduces the air leakage rate of the conveyor body and improves the material drying and cooling efficiency.

[0038] A lubricant is designed to seal between the stub shaft 21, the gland 42, and the pressure plate 41. Graphite can be used as a filler in the lubricant to ensure a tight seal between the stub shaft 21, the gland 42, and the pressure plate 41. Because the packing made of graphite filler is tightly fitted to the stub shaft 21, this design not only seals but also provides lubrication during operation, reducing sealing resistance caused by sealing requirements and lowering the energy consumption of the drive unit.

[0039] In one embodiment, a reset ring 5 is further provided within the self-lubricating rotating shaft 43. The reset ring 5 is disposed between the graphite filler and the inner wall of the self-lubricating rotating shaft 43. The graphite filler is composed of a plurality of sector-shaped graphite sheets 6 spliced together to form an annular graphite sheet, wherein the inner wall of the annular graphite sheet abuts the short shaft 21, and the outer wall of the annular graphite sheet abuts the inner wall of the annular graphite sheet. A lubricating layer 7 having a greater coefficient of friction than graphite is provided within the sector-shaped graphite sheet 6. The lubricating layer 7 is stacked within the sector-shaped graphite sheet 6, and the annular graphite sheet composed of the sector-shaped graphite sheets 6 with the lubricating layer 7 has a lubricating layer 7 spirally extending from the inner wall of the annular graphite sheet to the outer wall of the annular graphite sheet.

[0040] The working principle and beneficial effects of the above technical solution: when the packing made of graphite filler is put on the short shaft 21 for lubrication and sealing, as the gravity acts, the load acting on the bottom of the graphite filler is greater than the force in other directions, which leads to the consumption of graphite below the short shaft 21 being greater than the graphite above and around it during long-term use, thereby causing a gap to appear between the short shaft 21 and the self-lubricating rotating shaft 43, resulting in an increase in the air leakage rate. The uneven consumption leads to waste of lubricant, so that the graphite filler is made into fan-shaped graphite 6, and a plurality of fan-shaped graphite 6 are spliced together into annular graphite to form a detachable packing, and a reset ring 5 is set on the outer periphery of the annular graphite so that the inner wall of the fan-shaped graphite 6 can always fit on the short shaft 21 without gaps. However, it is far from enough to ensure sealing alone, and a lubricating layer 7 needs to be provided in the fan-shaped graphite 6. And ensure that the friction coefficient of the lubricating layer 7 is greater than that of graphite. In this way, when the fan-shaped graphite 6 located below the short shaft 21 is over-consumed to the lubricating layer 7, a difference in resistance will appear between the graphite and the lubricating layer 7, and then the annular graphite will slowly rotate with the short shaft 21 as the rotation axis until the lubricating layer 7 rotates to the top of the short shaft 21 or the place with the least force. At this time, the over-consumed fan-shaped graphite 6 rotates to a position with lower consumption, thereby rotating the fan-shaped graphite 6 with less consumption to the bottom of the short shaft 21 for consumption. As long as there are different friction coefficients, the annular graphite will rotate, thereby ensuring the uniformity of graphite filler consumption. The design of the fan-shaped graphite 6 also allows it to always fit the short shaft 21 under the action of the reset part 5. The lubricating layer 7 on the annular graphite spirally diffuses outward, allowing the annular graphite to rotate evenly, avoiding the short shaft 21 from wearing through the lubricating layer 7 and causing uneven graphite consumption.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 understood as limiting the present invention.

[0042] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An ultra-long and high-strength load-bearing roller device with a self-sealing function, characterized in that: The invention is composed of a plurality of extra-long rollers, wherein the extra-long rollers include a hollow roller (1), two connecting shaft groups (2) and two support assemblies (3); the connecting shaft group (2) is arranged at the end of the hollow roller (1), and the connecting shaft group (2) passes through the side wall of the conveyor housing and is connected to the support assemblies (3); a sealing assembly (4) is provided on the connecting shaft group (2), and the sealing assembly (4) is connected to the side wall of the conveyor housing; The connecting shaft assembly (2) comprises a short shaft (21) and a connecting assembly (22); one end of the short shaft (21) is connected to the inner wall of the hollow roller (1) via the connecting assembly (22), the other end of the short shaft (21) is connected to the supporting assembly (3), and the sealing assembly (4) is arranged on the short shaft (21) and connected to the side wall of the conveyor housing; The sealing assembly (4) includes a pressure plate (41), a pressure cover (42), a self-lubricating rotating shaft (43) and an elastic member (44); the pressure plate (41) and the self-lubricating rotating shaft (43) are both sleeved on the short shaft (21), and the self-lubricating rotating shaft (43) is connected to the pressure plate (41) through the pressure cover (42), the pressure plate (41) abuts against the side wall of the conveyor housing, and the two ends of the elastic member (44) are respectively connected to the support assembly (3) and the pressure cover (42); A sealing ring (45) is provided on the pressure plate (41); A lubricant is provided in the self-lubricating rotating shaft (43).

2. The ultra-long and high-strength load-bearing roller device with self-sealing function according to claim 1 is characterized in that: The connecting assembly (22) comprises a plurality of support flanges (23) or hollow cylindrical supports, wherein the support flanges (23) or hollow cylindrical supports are arranged on the short shaft (21), and the outer walls of the support flanges (23) or hollow cylindrical supports are connected to the inner wall of the hollow roller (1).

3. The ultra-long and high-strength load-bearing roller device with self-sealing function according to claim 1 is characterized in that: The lubricant is a graphite filler.

4. The ultra-long and high-strength load-bearing roller device with self-sealing function according to claim 3 is characterized in that: A reset ring (5) is also provided in the self-lubricating rotating shaft (43), and the reset ring (5) is provided between the graphite filler and the inner wall of the self-lubricating rotating shaft (43).

5. The ultra-long and high-strength load-bearing roller device with self-sealing function according to claim 4 is characterized in that: The graphite filler is formed by splicing a plurality of fan-shaped graphites (6) into an annular graphite, and the inner wall of the annular graphite abuts against the short axis (21), and the outer wall of the annular graphite abuts against the inner wall of the reset ring (5).

6. The ultra-long and high-strength load-bearing roller device with self-sealing function according to claim 5 is characterized in that: A lubricating layer (7) having a friction coefficient greater than that of graphite is provided in the sector-shaped graphite (6), the lubricating layer (7) is stacked in the sector-shaped graphite (6), and the annular graphite composed of the sector-shaped graphite (6) with the lubricating layer (7) has a lubricating layer (7) spirally surrounding from the inner wall of the annular graphite to the outer wall of the annular graphite.

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