Low-resistance energy-saving polymer roller

Abstract

The utility model belongs to the technical field of carrier roller machining, and particularly relates to a low-resistance energy-saving macromolecule roller which comprises a macromolecule pipe, a smooth pulling shaft, bearings, a bearing seat, a bearing seat outer cover, a steel lining, a reverse inner seal and a sealing cover. The ends, deviating from each other, of the two bearing seats are each provided with a bearing cavity, a limiting groove and an inverted buckle, the outer circle faces of the two bearing seats are sleeved with the two ends of the steel lining respectively, the steel lining is located between the two inverted buckles, the bearing seat outer cover abuts against the ends, away from the steel lining, of the bearing seats, and a limiting protrusion is arranged on the bearing seat outer cover. The polymer pipe is sleeved on the outer sides of the steel lining, the bearing seat and the bearing seat outer cover; and the inner sides of the two ends of the polymer pipe are provided with yielding grooves matched with the inverted buckles and the limiting bulges. According to the device, the structural strength of the carrier roller is improved, the service life of the carrier roller is prolonged, the running resistance is reduced, and the mute performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller processing, and specifically relates to a low-resistance energy-saving polymer roller. Background Art

[0002] Under conditions of high wear and severe corrosion, the rollers in the belt conveyor will be frequently damaged due to wear and tear of the drum skin and severe corrosion. The common solution is to increase the thickness of the drum skin and replace the anti-corrosion paint. However, due to the thickening of the drum skin, the overall weight of the rollers also increases, thereby increasing the energy consumption required for the operation of the belt conveyor.

[0003] Polymer materials are better than steel rollers in corrosion resistance under acid, alkali, salt and other working conditions, and their wear resistance is more than five times that of steel materials. Therefore, polymer rollers are more suitable for corrosive working environments than ordinary steel rollers, such as the chemical industry, coastal areas, and coal transportation systems, reducing the production costs of enterprises. However, polymer materials are still inferior to steel rollers in strength, so the cylinder skin may break due to excessive load, and polymer roller materials are still lacking in high-temperature dimensional stability. Under high-temperature working conditions, the elongation of the cylinder will cause damage such as sealing and locking. This kind of damage before the service life is reached not only wastes resources and increases operating costs, but also delays the progress of work during the replacement interval. If the damage is not discovered and replaced in time, it may even damage the belt.

[0004] Therefore, it is urgent to wait for those skilled in the art to develop a new and more practical low-resistance energy-saving polymer roller. Utility Model Content

[0005] The purpose of this utility model is to solve the above technical problems, and its technical solution is:

[0006] A low-resistance energy-saving polymer roller, comprising a polymer tube, a light-drawing shaft, a bearing, a bearing seat, a bearing seat outer cover, a steel liner, a reverse inner seal and a sealing cover, wherein the two ends of the light-drawing shaft are rotatably connected to the bearing seat through bearings, and the ends of the two bearing seats that are away from each other are provided with bearing cavities, limit grooves and undercuts, the two ends of the steel liner are respectively sleeved on the outer circumferential surfaces of the two bearing seats, and the steel liner is located between the two undercuts, the bearing seat outer cover abuts against the end of the bearing seat away from the steel liner, and a limit protrusion is provided on the bearing seat outer cover, the polymer tube is sleeved on the outside of the steel liner, the bearing seat and the bearing seat outer cover, and the inner sides of the two ends of the polymer tube are provided with undercuts and limit protrusions. The outer cover of the bearing seat is provided with a groove matching the protrusion in the middle, and a groove matching the sealing cover is provided in the center of the end of the outer cover of the bearing seat away from the bearing seat. The sealing cover is sleeved on the drawing shaft and is gap-matched with the outer cover of the bearing seat. The reverse inner seal is provided between the bearing and the corresponding outer cover of the bearing seat, and the reverse inner seal and the outer cover of the bearing seat are slidably matched through a labyrinth structure. The shaft contact part of the reverse inner seal is in conflict with the shaft contact part of the sealing cover. Both ends of the drawing shaft are provided with a shaft retaining ring 1 and a shaft retaining ring 2. The shaft retaining ring 1 is in conflict between the inner ring of the bearing and the reverse inner seal, and the shaft retaining ring 2 is in conflict with the end of the sealing cover away from the reverse inner seal.

[0007] Preferably, the end of the bearing seat outer cover close to the bearing seat is provided with a first retaining ring, a second retaining ring and a sealing ring in radial order from large to small, the limiting protrusion is in conflict with the side of the undercut away from the steel liner, the first retaining ring is in conflict with the side wall and the bottom of the limiting groove, the second retaining ring is in conflict with the outer ring of the bearing, and the sealing ring and the reverse inner seal are arranged in cooperation with a labyrinth structure.

[0008] Preferably, one side of the limiting protrusion close to the undercut is evenly distributed with silent holes along the circumference, which helps to improve the silent effect of the device.

[0009] Preferably, industrial structural adhesive is applied on the joint surface between the polymer tube, the outer cover of the bearing seat and the undercut. More preferably, the industrial structural adhesive is a modified polyurethane sealant, which helps to improve the bonding strength between the polymer tube, the outer cover of the bearing seat and the bearing seat.

[0010] Preferably, the bearing seat is made of PA6+30% glass fiber material by integral injection molding, which has the advantages of high rigidity, high mechanical strength, low shrinkage, creep resistance, good thermal stability, high tensile load, strong wear resistance, and good toughness.

[0011] Preferably, the bearing seat outer cover is made of ABS material by injection molding, which has higher dimensional stability and is more suitable for injection molding.

[0012] Preferably, the two opposite ends of the two bearing seats are evenly distributed with the second silent hole along the circumferential direction. On the premise of ensuring the strength of the overall structure of the bearing seat, the second silent hole is evenly distributed around the shaft hole of the bearing seat, so that the bearing seat has the advantages of noise reduction, vibration absorption, light weight, etc.

[0013] Preferably, the cylinder body is made of high-performance multi-component modified nylon composite material and nano-silicon dioxide is added. It can maintain the characteristics of high strength, high toughness and high stability at high temperatures, achieve the goal of strengthening and toughening in the modified system, and at the same time have certain heat resistance and weather resistance, ensuring that the polymer roller can still ensure the dimensional stability of the cylinder body under high temperature conditions, avoiding the locking phenomenon caused by failure of the sealing gap due to the expansion of the cylinder body size at high temperature.

[0014] The utility model also includes other components that enable a low-resistance energy-saving polymer roller to be used normally, all of which are conventional means in the field. In addition, devices or components not limited in the utility model, such as shaft retaining rings, polishing shafts, bearings and maze structures, all adopt the existing technologies in the field.

[0015] The working principle of the utility model is that the common polymer silent rollers may break due to excessive loads due to the lack of roller strength. After improvement, a steel liner is added to fit the inner hole of the polymer tube and the outer circle of the bearing seat and connect the bearing seats at both ends to avoid the coaxiality deviation of the local pressure bearing position, which may cause the cylinder to break; secondly, the steel liner completely covers the bearing position with the most serious stress concentration to provide more reliable strength for the roller body. The present application can reduce the impact of the sealing structure on the rotational resistance of the roller. An undercut is added to the outer ring of the bearing seat to make it more firmly connected to the roller body and not easy to fall off. The bearing seat is changed to a two-piece structure of a bearing seat + a bearing seat outer cover, and the internal cavity is increased, which helps to improve the silent effect of the device.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the device helps to improve the structural strength and service life of the roller, and helps to reduce the running resistance and improve the quiet performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model in the embodiment.

[0018] Figure 2 for Figure 1 A magnified schematic diagram of the local structure.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the bearing seat from one perspective in the embodiment.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the bearing seat in another perspective in the embodiment.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the bearing seat outer cover from one perspective in the embodiment.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the bearing seat outer cover from another perspective in the embodiment.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the reverse inner seal from one perspective in the embodiment.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the reverse inner seal in another perspective in the embodiment. DETAILED DESCRIPTION

[0025] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Example

[0027] like Figures 1 to 8 As shown, a low-resistance energy-saving polymer roller proposed in this embodiment includes a polymer tube 1, a light-drawing shaft 3, a bearing 4, a bearing seat 5, a bearing seat outer cover 7, a steel liner 2, a reverse inner seal 6 and a sealing cover 8, the two ends of the light-drawing shaft are rotatably connected to the bearing seat through bearings, and the ends of the two bearing seats that are away from each other are provided with bearing cavities 11, limiting grooves 12 and undercuts 13, the two ends of the steel liner are respectively sleeved on the outer circumferential surfaces of the two bearing seats, and the steel liner is located between the two undercuts, the bearing seat outer cover is in contact with the end of the bearing seat away from the steel liner, and the bearing seat outer cover is provided with a limiting protrusion 15, the polymer tube is sleeved on the outside of the steel liner, the bearing seat and the bearing seat outer cover, and the polymer tube The inner sides of both ends are provided with grooves matching the undercuts and the limiting protrusions, and the center part of the end of the bearing seat outer cover away from the bearing seat is provided with a groove 16 matching the sealing cover, the sealing cover is sleeved on the drawing shaft and is gap-matched with the bearing seat outer cover, the reverse inner seal is arranged between the bearing and the corresponding bearing seat outer cover, and the reverse inner seal and the bearing seat outer cover are slidingly matched through a maze structure, the shaft contact part of the reverse inner seal is in conflict with the shaft contact part of the sealing cover, and both ends of the drawing shaft are provided with a shaft retaining ring 9 and a shaft retaining ring 10, the shaft retaining ring 1 is in conflict between the inner ring of the bearing and the reverse inner seal, and the shaft retaining ring 2 is in conflict with the end of the sealing cover away from the reverse inner seal.

[0028] Specifically, see Figure 5The end of the bearing seat outer cover close to the bearing seat is provided with a first retaining ring 17, a second retaining ring 18 and a sealing ring 19 in radial order from large to small. The limiting protrusion contacts the side of the undercut away from the steel liner. The first retaining ring contacts the side wall and the bottom of the limiting groove. The second retaining ring contacts the outer ring of the bearing. The sealing ring and the reverse inner seal are arranged in cooperation with a labyrinth structure. The side of the limiting protrusion close to the undercut is uniformly distributed with silent holes 20 along the circumferential direction, which helps to improve the silent effect of the device.

[0029] In this embodiment, industrial structural adhesive (not shown in the figure) is applied on the joint surface between the polymer tube, the outer cover of the bearing seat and the undercut. The industrial structural adhesive adopts modified polyurethane sealant, which helps to improve the bonding strength between the polymer tube, the outer cover of the bearing seat and the bearing seat.

[0030] The bearing seat is made of PA6+30% glass fiber material by integral injection molding. This material has the advantages of high rigidity, high mechanical strength, low shrinkage, creep resistance, good thermal stability, high tensile load, strong wear resistance, good toughness, etc. The outer cover of the bearing seat is made of ABS material by injection molding, which has higher dimensional stability and is more suitable for injection molding.

[0031] Also, see Figure 3 The two opposite ends of the two bearing seats are evenly distributed with silent holes 14 along the circumferential direction. Under the premise of ensuring the strength of the overall structure of the bearing seat, the silent holes 14 are evenly distributed around the shaft hole of the bearing seat, so that the bearing seat has the advantages of noise reduction, vibration absorption, and light weight.

[0032] The working principle of the utility model is that the common polymer silent rollers may break due to excessive loads due to the lack of roller strength. After improvement, a steel liner is added to fit the inner hole of the polymer tube and the outer circle of the bearing seat and connect the bearing seats at both ends to avoid the coaxiality deviation of the local pressure bearing position, which may cause the cylinder to break; secondly, the steel liner completely covers the bearing position with the most serious stress concentration to provide more reliable strength for the roller body. The present application can reduce the impact of the sealing structure on the rotational resistance of the roller. An undercut is added to the outer ring of the bearing seat to make it more firmly connected to the roller body and not easy to fall off. The bearing seat is changed to a two-piece structure of a bearing seat + a bearing seat outer cover, and the internal cavity is increased, which helps to improve the silent effect of the device.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-resistance energy-saving polymer roller, comprising a polymer tube, a drawing shaft, a bearing, a bearing seat and a bearing seat outer cover, characterized in that: It also includes a steel liner, a reverse inner seal and a sealing cover. The two ends of the light-pulling shaft are rotatably connected to the bearing seat through bearings. The ends of the two bearing seats that are away from each other are provided with bearing cavities, limit grooves and undercuts. The two ends of the steel liner are respectively sleeved on the outer circumferential surfaces of the two bearing seats, and the steel liner is located between the two undercuts. The bearing seat outer cover is in contact with the end of the bearing seat away from the steel liner, and a limit protrusion is provided on the bearing seat outer cover. The polymer tube is sleeved on the outside of the steel liner, the bearing seat and the bearing seat outer cover, and the inner sides of the two ends of the polymer tube are provided with grooves matching the undercuts and the limit protrusions. A groove matching with a sealing cover is provided at the center of one end away from the bearing seat. The sealing cover is sleeved on the pulling shaft and is gap-matched with the outer cover of the bearing seat. The reverse inner seal is provided between the bearing and the corresponding outer cover of the bearing seat, and the reverse inner seal and the outer cover of the bearing seat are slidably matched through a labyrinth structure. The shaft contact portion of the reverse inner seal is in conflict with the shaft contact portion of the sealing cover. Shaft retaining ring 1 and shaft retaining ring 2 are provided at both ends of the pulling shaft. The shaft retaining ring 1 is in conflict between the inner ring of the bearing and the reverse inner seal, and the shaft retaining ring 2 is in conflict with the end of the sealing cover away from the reverse inner seal.

2. A low resistance energy-saving polymer roller according to claim 1, characterized in that: The end of the bearing seat outer cover close to the bearing seat is provided with a first retaining ring, a second retaining ring and a sealing ring in radial order from large to small, the limiting protrusion is in conflict with the side of the undercut away from the steel liner, the first retaining ring is in conflict with the side wall and the bottom of the limiting groove, the second retaining ring is in conflict with the outer ring of the bearing, and the sealing ring and the reverse inner seal are arranged in cooperation with a labyrinth structure.

3. A low resistance energy-saving polymer roller according to claim 2, characterized in that: The limiting protrusion has one side close to the undercut evenly distributed with silent holes along the circumferential direction.

4. The low-resistance energy-saving polymer roller according to claim 1, characterized in that: Industrial structural adhesive is smeared on the joint surfaces of the polymer tube, the outer cover of the bearing seat and the undercut.

5. A low-resistance energy-saving polymer roller according to claim 4, characterized in that: The industrial structural adhesive adopts modified polyurethane sealant.

6. The low-resistance energy-saving polymer roller according to claim 1, characterized in that: The bearing seat is made of PA6+30% glass fiber material by integral injection molding.

7. The low-resistance energy-saving polymer roller according to claim 1, characterized in that: The outer cover of the bearing seat is made of ABS material by injection molding.

8. A low resistance energy-saving polymer roller according to any one of claims 1 to 7, characterized in that: The two opposite ends of the two bearing seats are evenly distributed with silent holes along the circumferential direction.

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