Steel heavy-load mute roller capable of predicting service life

Abstract

The utility model belongs to the technical field of carrier roller processing, and relates to a steel heavy load mute roller capable of predicting the service life, which comprises a steel outer cylinder, a smooth pulling shaft, a bearing, a bearing seat, a shock-stopping rubber ring, a mute inner baffle, an inner seal, an outer seal, a sealing cover, a shock-stopping shaft sleeve, a dust cover and a shaft check ring, the two ends of the smooth pulling shaft are rotationally connected with the bearing pedestals at the corresponding ends through bearings respectively, the two bearing pedestals are correspondingly fixed to the inner sides of the two ends of the steel outer cylinder, the silence inner baffle is provided with bearing limiting cavities matched with outer rings of the bearings, the smooth pulling shaft penetrates through an inner hole of the silence inner baffle, and the smooth pulling shaft is in clearance fit with the silence inner baffle. And the mute inner baffle is arranged on the innermost side of the inner cavity of the bearing seat. The device can improve the vibration condition during operation of the device and reduce the noise of the bearing, and the temperature of the bearing can be calculated by observing the color change of the thermochromic paint, so that the damage condition of the bearing is judged, and timely replacement is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller processing, in particular to a steel heavy-load silent roller with predictable service life. Background Art

[0002] At present, most of the rollers used in belt conveyors are ordinary steel rollers. As the steel material itself has weak vibration absorption ability, and as the manufacturing process of some steel rollers is imperfect and the roller structure is thin, the coaxiality of the bearing seats on both sides is poor, the vibration during operation is too large, and the operating noise value of the bearing itself is too high, resulting in the operating noise of the belt conveyor exceeding 90 decibels; in addition, the excessive vibration of the steel outer cylinder will also cause cracking of its welds and damage to the bearings, resulting in premature damage within the expected service life, causing waste of resources, and because the belt conveyor needs to stop running when replacing the rollers, frequent damage to the rollers will delay the progress of the work.

[0003] Therefore, it is urgent for those skilled in the art to develop a new steel heavy-load silent roller with a predictable lifespan. Utility Model Content

[0004] The purpose of this utility model is to solve the above technical problems, and its technical solution is:

[0005] A steel heavy-duty silent roller with predictable service life, comprising a steel outer cylinder, a drawing shaft, a bearing, a bearing seat, a vibration-absorbing rubber ring, a silent inner stopper, an inner seal, an outer seal, a sealing cover, a vibration-absorbing sleeve, a dust cover and a shaft stopper ring, the two end faces of the drawing shaft are coated with a thermochromic paint layer, and the two ends of the drawing shaft are rotatably connected to the bearing seats at the corresponding ends through bearings, the two bearing seats are fixed on the inner sides of the two ends of the steel outer cylinder respectively, the silent inner stopper is provided with a bearing limiting cavity matching the outer ring of the bearing, the drawing shaft passes through the inner hole of the silent inner stopper and the drawing shaft and the silent inner stopper are gap-matched, the silent inner stopper is arranged at the innermost side of the inner cavity of the bearing seat, the outer ring of the bearing is embedded in the bearing limiting cavity of the silent inner stopper, the vibration-absorbing sleeve is sleeved on the drawing shaft, and the inner end of the vibration-absorbing sleeve It conflicts with the inner ring of the bearing, and the shaft retaining ring is clamped on the drawing shaft and conflicts with the outer end of the vibration-proof sleeve. The sealing cover and the inner seal are both embedded in the inner cavity of the bearing seat, and one end of the inner seal conflicts with the outer end of the silent inner stop. The sealing cover is sleeved on the end of the inner seal away from the silent inner stop. The outer seal is arranged between the sealing cover and the inner seal, and the outer seal and the inner seal are dynamically and statically combined through a labyrinth structure. The dust cover and the sealing cover are both sleeved on the vibration-proof sleeve, and the dust cover conflicts between the shaft retaining ring and the outer seal. The outer edge of the dust cover is gap-matched with the bearing seat, and the dust cover and the sealing cover are gap-matched through a concave-convex structure. Several vibration-proof rubber rings are arranged between the two bearing seats and are evenly distributed on the inner side of the steel outer cylinder. The vibration-proof rubber rings are movably worn on the drawing shaft.

[0006] Preferably, the bearing seat is an integrated forging with higher strength. Thickening the outer circle of the bearing seat can provide a larger contact area with the steel outer cylinder. The supporting effect on the steel outer cylinder is better than that of a stamped bearing seat, which can effectively reduce the noise generated by vibration during operation and also protect the bearing.

[0007] Preferably, the anti-vibration rubber ring is bonded to the inner side of the steel outer cylinder by industrial structural adhesive. More preferably, the industrial structural adhesive is a modified polyurethane sealant, which is used to fix the anti-vibration rubber ring in the steel outer cylinder.

[0008] Preferably, an inner ring is provided on the side of the anti-vibration rubber ring away from the steel outer cylinder, and a silent hole is provided on the inner ring which passes through the left and right sides, which helps to improve the silent effect of the device.

[0009] Preferably, the silent inner stopper is made of PP material, and one end of the silent inner stopper that contacts the inner seal is evenly distributed with silent holes along the circumferential direction. The silent inner stopper is made of PP material, and silent holes are correspondingly arranged on the outer ring of the bearing, which, combined with the shock-absorbing characteristics of the PP material, helps to improve the silent effect of the device.

[0010] Preferably, the bearing is a silent bearing to improve the silent effect of the device.

[0011] Preferably, the surface of the steel outer cylinder is provided with a plurality of annular grooves with a width of 4 mm, a depth of 0.5 mm and an interval of 4 mm, so as to reduce the contact area with the tape and further reduce the noise.

[0012] Preferably, the outer surface of the steel outer cylinder is provided with an integral cast rubber layer or a polyurethane wear-resistant layer or a polymer tube to increase its wear resistance.

[0013] The utility model also includes other components that enable a steel heavy-duty silent roller with a predictable life 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, maze structures and concave-convex structures, etc., all adopt the existing technologies in the field.

[0014] The working principle of the utility model is that a shock-absorbing rubber ring is pressed into the steel outer cylinder to reduce vibration, which can improve the vibration of the steel outer cylinder. A silent inner stop is added in the bearing seat to effectively isolate the noise during the operation of the bearing and improve the vibration transmission of the bearing to the rigid contact of the bearing seat when the bearing rotates. Since the bearing will make a loud noise when it is damaged, and at the same time the bearing temperature will increase due to severe wear and tear due to structural failure, the temperature-sensitive color-changing paint is applied to the end face of the polishing shaft. After the temperature is transmitted to the polishing shaft through the inner ring of the bearing, the color of the paint changes with the temperature. The maintenance personnel can infer the bearing temperature by observing the change in the color of the paint on the shaft head, thereby judging the bearing status. Since the belt conveyor needs to be shut down to replace the rollers, it will cause delays in the work progress, and if the rollers are not replaced in time after being damaged, there is a risk of scratching the tape. Therefore, the damage of the rollers is judged by observing the color of the end faces of the roller shafts, so that the rollers can be replaced in a planned manner.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the device can improve the vibration during operation of the device and reduce bearing noise. The bearing temperature can be estimated by observing the color change of the thermochromic paint, thereby judging its damage and facilitating timely replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model in the embodiment.

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of the local cross-sectional structure.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the vibration-stopping rubber ring in the embodiment.

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the silent inner baffle in the embodiment.

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the outer side of the inner seal in the embodiment.

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the inner side of the inner seal in the embodiment.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the outer side of the inner and outer seals in the embodiment.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the inner side of the outer seal in the embodiment.

[0024] Fig. 9 Schematic diagram of the three-dimensional structure of the outer side of the sealing cover in the embodiment.

[0025] Fig.10Schematic diagram of the three-dimensional structure of the inner side of the sealing cover in the embodiment.

[0026] Fig.11 Schematic diagram of the three-dimensional structure of the inner side of the dust cover in the embodiment. DETAILED DESCRIPTION

[0027] The technology of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example

[0029] like Figures 1 to 11 As shown, this embodiment proposes a steel heavy-duty silent roller with predictable service life, including a steel outer cylinder 1, a drawing shaft 2, a bearing 5, a bearing seat 6, a vibration-absorbing rubber ring 3, a silent inner stopper 4, an inner seal 7, an outer seal 8, a sealing cover 9, a vibration-absorbing sleeve 10, a dust cover 11 and a shaft stopper ring 12. The steel outer cylinder is made of a welded pipe, and the two end faces of the drawing shaft are coated with a thermochromic paint layer (not shown in the figure), and the two ends of the drawing shaft are rotatably connected to the bearing seats at the corresponding ends through bearings, and the two bearing seats are correspondingly welded to the inner sides of the two ends of the steel outer cylinder. The silent inner stopper is provided with a bearing limiting cavity 41 matching the outer ring of the bearing, the drawing shaft passes through the inner hole of the silent inner stopper and the drawing shaft and the silent inner stopper are gap-matched, and a gap of 1 mm is left between the outer surface of the drawing shaft and the inner hole wall of the silent inner stopper, the silent inner stopper is arranged on the innermost side of the inner cavity of the bearing seat, and the outer ring of the bearing is embedded The cam is secured in place and the cam is secured in place with a spring which is adapted to engage the cam and to engage with the bearing seat, wherein the cam is secured to a position adjacent to the bearing seat, the cam being secured to the bearing seat and being adapted to engage with the bearing seat.

[0030] Specifically, the bearing seat is an integrated forging with higher strength. The thickening treatment at the outer circle of the bearing seat can provide a larger contact area with the steel outer cylinder. The supporting effect on the steel outer cylinder is better than that of a stamped bearing seat, which can effectively reduce the noise generated by vibration during operation and also protect the bearing.

[0031] In this embodiment, the anti-vibration rubber ring is bonded to the inner side of the steel outer cylinder by industrial structural adhesive. The industrial structural adhesive is a modified polyurethane sealant, which is used to fix the anti-vibration rubber ring in the steel outer cylinder. Figure 3 An inner ring 31 is provided on the side of the anti-vibration rubber ring away from the steel outer cylinder, and a mute hole 32 is provided on the inner ring, which is through to the left and right, and helps to improve the mute effect of the device.

[0032] More specifically, see Figure 4 The silent inner stopper is made of PP material, and one end of the silent inner stopper that contacts the inner seal is evenly distributed with silent holes 42 along the circumferential direction. The silent inner stopper is made of PP material, and silent holes 42 are correspondingly arranged on the outer ring of the bearing. Combined with the shock-absorbing characteristics of the PP material, it helps to improve the silent effect of the device.

[0033] In some other embodiments, the bearing is a silent bearing to improve the silent effect of the device.

[0034] In some other embodiments, the surface of the steel outer cylinder is provided with a plurality of annular grooves with a width of 4 mm, a depth of 0.5 mm and an interval of 4 mm to reduce the contact area with the tape to further reduce noise.

[0035] In some other embodiments, the outer surface of the steel outer cylinder is provided with an integral cast rubber layer or a polyurethane wear-resistant layer or a polymer tube to increase its wear resistance.

[0036] The working principle of the utility model is that a shock-absorbing rubber ring is pressed into the steel outer cylinder to reduce vibration, which can improve the vibration of the steel outer cylinder. A silent inner stop is added in the bearing seat to effectively isolate the noise during the operation of the bearing and improve the vibration transmission of the bearing to the rigid contact of the bearing seat when the bearing rotates. Since the bearing will make a loud noise when it is damaged, and at the same time the bearing temperature will increase due to severe wear and tear due to structural failure, the temperature-sensitive color-changing paint is applied to the end face of the polishing shaft. After the temperature is transmitted to the polishing shaft through the inner ring of the bearing, the color of the paint changes with the temperature. The maintenance personnel can infer the bearing temperature by observing the change in the color of the paint on the shaft head, thereby judging the bearing status. Since the belt conveyor needs to be shut down to replace the rollers, it will cause delays in the work progress, and if the rollers are not replaced in time after being damaged, there is a risk of scratching the tape. Therefore, the damage of the rollers is judged by observing the color of the end faces of the roller shafts, so that the rollers can be replaced in a planned manner.

[0037] 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 steel heavy-duty silent roller with predictable service life, comprising a steel outer cylinder, a polishing shaft, a bearing and a bearing seat, characterized in that: It also includes a vibration-proof rubber ring, a silent inner stopper, an inner seal, an outer seal, a sealing cover, a vibration-proof sleeve, a dust cover and a shaft retaining ring. The two end faces of the light-pulling shaft are coated with a thermochromic paint layer, and the two ends of the light-pulling shaft are rotatably connected to the bearing seats at the corresponding ends through bearings respectively. The two bearing seats are fixed on the inner sides of the two ends of the steel outer cylinder respectively. The silent inner stopper is provided with a bearing limiting cavity matching the outer ring of the bearing. The light-pulling shaft passes through the inner hole of the silent inner stopper and the light-pulling shaft and the silent inner stopper are gap-matched. The silent inner stopper is arranged at the innermost side of the inner cavity of the bearing seat, and the outer ring of the bearing is embedded in the bearing limiting cavity of the silent inner stopper. The vibration-proof sleeve is sleeved on the light-pulling shaft, and the inner end of the vibration-proof sleeve is in conflict with the inner ring of the bearing. The shaft retaining ring It is clamped on the pulling shaft and abuts against the outer end of the anti-vibration sleeve. The sealing cover and the inner seal are both embedded in the inner cavity of the bearing seat, and one end of the inner seal abuts against the outer end of the silent inner stop. The sealing cover is sleeved on the end of the inner seal away from the silent inner stop. The outer seal is arranged between the sealing cover and the inner seal, and the outer seal and the inner seal are dynamically and statically combined through a labyrinth structure. The dust cover and the sealing cover are both sleeved on the anti-vibration sleeve, and the dust cover abuts against the shaft retaining ring and the outer seal. The outer edge of the dust cover is gap-matched with the bearing seat, and the dust cover and the sealing cover are gap-matched through a concave-convex structure. Several anti-vibration rubber rings are arranged between the two bearing seats and are evenly distributed on the inner side of the steel outer cylinder. The anti-vibration rubber rings are movably worn on the pulling shaft.

2. A steel heavy-duty silent roller with predictable life according to claim 1, characterized in that: The bearing seat is an integral forging part.

3. A steel heavy-duty silent roller with predictable service life according to claim 1, characterized in that: The anti-vibration rubber ring is bonded to the inner side of the steel outer cylinder by industrial structural adhesive.

4. A steel heavy-duty silent roller with predictable life according to claim 3, characterized in that: The industrial structural adhesive adopts modified polyurethane sealant.

5. The heavy-duty steel silent roller with predictable service life according to claim 1, characterized in that: An inner ring is arranged on the side of the anti-vibration rubber ring away from the steel outer cylinder, and a mute hole 1 is arranged on the inner ring and passes through the inner ring from left to right.

6. A heavy-duty steel silent roller with predictable lifespan according to claim 1, characterized in that: The silent inner stopper is made of PP material, and one end of the silent inner stopper that contacts the inner seal is evenly distributed with silent holes 2 along the circumferential direction.

7. A steel heavy-duty silent roller with predictable lifespan according to claim 1, characterized in that: The bearing is a silent bearing.

8. The heavy-duty steel silent roller with predictable service life according to claim 1, characterized in that: The surface of the steel outer cylinder is provided with a plurality of annular grooves with a width of 4 mm, a depth of 0.5 mm and an interval of 4 mm.

9. A heavy-duty steel silent roller with predictable lifespan according to claim 1, characterized in that: The outer surface of the steel outer cylinder is provided with an integral cast rubber layer or a polyurethane wear-resistant layer.

Images