Macromolecular carrier roller capable of preventing high-temperature locking

Abstract

The utility model belongs to the technical field of carrier roller production, and relates to a high-molecular carrier roller capable of preventing high-temperature locking. Comprising a silence bearing seat, the silence bearing seat comprises a bearing seat body, an inner baffle, a bearing, a first inner seal, a second inner seal, an outer seal and an outer cover, the inner baffle, the bearing, the first inner seal, the second inner seal, the outer seal and the outer cover are arranged in the bearing seat body, and the inner baffle and the outer seal abut against the inner side and the outer side of an outer ring of the bearing respectively; the end, close to the bearing, of the sealing part shaped like the Chinese character'wang 'is provided with a conical sealing channel for preventing the outer seal and the first inner seal from being locked, the first inner seal and the second inner seal are correspondingly arranged on the inner side and the outer side of the sealing part shaped like the Chinese character'wang' respectively, and the side, away from the second inner seal, of the first inner seal abuts against an inner ring of the bearing. The side, away from the first inner seal, of the second inner seal abuts against the outer cover. According to the device, the locking phenomenon caused by material deformation due to temperature change of a macromolecular material of an existing macromolecular carrier roller is avoided, and the production efficiency during press fitting of multiple sets of sealing elements is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of carrier roller production, and particularly relates to a high-molecular carrier roller capable of preventing high-temperature seizure. BACKGROUND

[0002] At present, the sealing structure of the carrier roller applied to the belt conveyor is mostly a labyrinth seal, which is formed by arranging annular grooves and protrusions on the sealing member in a staggered manner. When foreign matters and moisture attempt to enter the inside of the carrier roller, they need to pass through multiple winding paths to achieve the sealing effect due to the gravity and inertia. However, the effect is often unsatisfactory when the sealing structure is applied to complex coal mine environments and the like. In addition, the belt and the carrier roller will inevitably generate noise during operation, which is a problem that cannot be avoided in crowded places and the like.

[0003] The existing sealing structure of the high-molecular carrier roller is divided into a simple two-piece set structure and a multi-piece set structure. The simple sealing structure has high compression packaging efficiency and excellent rotational resistance performance, but the waterproof and dustproof effect is slightly insufficient. The multi-piece set sealing structure is the opposite. At the same time, the existing sealing structure cannot effectively solve the seizure phenomenon caused by the expansion of the high-temperature material of the high-molecular carrier roller.

[0004] Therefore, it is necessary to improve the existing sealing structure of the high-molecular carrier roller. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to overcome the above-mentioned defects and provides a high-molecular carrier roller capable of preventing high-temperature seizure.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a high-molecular carrier roller capable of preventing high-temperature seizure, which comprises a mute bearing seat, wherein the mute bearing seat comprises a bearing seat body and a backstop, a bearing, a first inner seal, a second inner seal, an outer seal and an outer cover arranged in the bearing seat body. The backstop and the outer seal are respectively arranged on the inner side and the outer side of the outer ring of the bearing. The inner part of the outer seal is provided with a wang-shaped sealing part. One end of the wang-shaped sealing part close to the bearing is provided with a tapered sealing channel for preventing the outer seal from seizing with the first inner seal. The first inner seal and the second inner seal are respectively arranged on the inner side and the outer side of the wang-shaped sealing part and are matched with the wang-shaped sealing part. The outer seal is slidably matched with the first inner seal and the second inner seal. The side of the first inner seal away from the second inner seal is in contact with the inner ring of the bearing. The side of the second inner seal away from the first inner seal is in contact with the outer cover. The outer cover is slidably matched with the end of the bearing seat body away from the backstop.

[0008] Preferably, the mute bearing seat is made of PA66+15% glass fiber material, and a plurality of mute holes are uniformly distributed on the end of the mute bearing seat away from the outer cover in the circumferential direction.

[0009] Preferably, the application further comprises a thin-walled steel pipe, an axle check ring, a light-pulling shaft, and an ultrahigh molecular tube, two mute bearing seats are clamped at both ends of the ultrahigh molecular tube, the thin-walled steel pipe is arranged in the ultrahigh molecular tube and between the two mute bearing seats, the light-pulling shaft is arranged in the thin-walled steel pipe and rotationally connected with the mute bearing seats at both ends, respectively, the thin-walled steel pipe is sleeved at the inner end of the bearing seat body at both ends, respectively, and the end of the thin-walled steel pipe extends above the bearing, and the axle check ring is clamped on the light-pulling shaft and abuts against the side of the outer cover away from the second inner seal.

[0010] Preferably, the inner side of the outer cover is slidingly matched with the side of the outer seal away from the bearing, so that a rotation gap is left between the outer cover and the outer seal.

[0011] Preferably, the edges of the cooperation parts of the outer seal, the first inner seal, and the second inner seal are provided with round corners to avoid burr generation, and the ends of the cooperation parts of the first inner seal, the second inner seal, and the light-pulling shaft are provided with chamfers. This facilitates bidirectional press fitting during production, reduces the identification time of workers during assembly, and facilitates simultaneous press fitting, thereby greatly increasing the installation efficiency.

[0012] The utility model also includes other components that can make it normal use, all are the conventional means in the field, in addition, the device or component not added in the utility model, such as ultrahigh molecular tube, thin-walled steel pipe, light-pulling shaft, axle check ring, bearing, mute hole etc., all adopt the prior art in the field.

[0013] The working principle of the utility model is that the king-shaped sealing part is arranged on the outer seal, the outer seal, the first inner seal, and the second inner seal are simultaneously press fitted, thereby improving the working efficiency, the tapered sealing channel is arranged on the end of the outer seal close to the bearing, the deformation of the outer seal and the bearing seat caused by interference fit during press fitting can be effectively avoided, the sealing cavity gap is not tight, the flexibility of the carrier roller is good, the seizure phenomenon caused by the expansion of the material of the high molecular carrier roller under high temperature working condition can be effectively alleviated, and the extrusion of the pipe material and the bearing seat causes the sealing channel to be too tight.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] The device solves the seizure phenomenon caused by the material deformation of the high molecular material of the existing high molecular carrier roller due to temperature change, and is helpful to the production efficiency during press fitting of multiple sleeve sealing elements. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1This is a schematic diagram of the main structure of the present invention in an embodiment.

[0017] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-section structure.

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of section B in the diagram.

[0019] Figure 4 This is a three-dimensional structural diagram of the present invention in an embodiment.

[0020] Figure 5 This is an exploded structural diagram of the silent bearing housing from one perspective in the embodiment.

[0021] Figure 6 This is an exploded structural diagram of the silent bearing housing from another perspective in the embodiment. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example

[0024] like Figures 1-6 As shown, this embodiment proposes a high-temperature seizing-proof polymer idler roller, including a silent bearing housing. The silent bearing housing includes a bearing housing body 1 and an inner baffle 2, a bearing 3, a first inner seal 4, a second inner seal 5, an outer seal 6, and an outer cover 7 disposed within the bearing housing body. The inner baffle and the outer seal respectively abut against the inner and outer sides of the outer ring of the bearing. The outer seal has a king-shaped sealing part inside. The end of the king-shaped sealing part near the bearing has a conical sealing groove 8 to prevent the outer seal from seizing with the first inner seal. The first inner seal and the second inner seal are respectively disposed on the inner and outer sides of the king-shaped sealing part and matched with the king-shaped sealing part. The outer seal slides with the first inner seal and the second inner seal respectively. The side of the first inner seal away from the second inner seal abuts against the inner ring of the bearing. The side of the second inner seal away from the first inner seal abuts against the outer cover. The outer cover slides with the end of the bearing housing body away from the inner baffle.

[0025] In this embodiment, the silent bearing housing is made of PA66+15% glass fiber material, and a number of silent holes 9 are evenly distributed circumferentially at the end of the silent bearing housing away from the outer cover.

[0026] The embodiment further comprises a thin-walled steel pipe 10, an axle check ring 11, a light-pulling axle 12 and an ultrahigh molecular pipe 13, two silent bearing seats are clamped at two ends of the ultrahigh molecular pipe, the thin-walled steel pipe is arranged in the ultrahigh molecular pipe and is arranged between the two silent bearing seats, the light-pulling axle is arranged in the thin-walled steel pipe and two ends of the light-pulling axle are rotationally connected with the corresponding silent bearing seat, two ends of the thin-walled steel pipe are respectively sleeved with the inner end of the corresponding bearing seat body, and the end of the thin-walled steel pipe extends above the bearing, the axle check ring is clamped on the light-pulling axle and abuts against the side of the outer cover away from the second inner seal.

[0027] Specifically, the inner side of the outer cover is in sliding fit with the side of the outer seal away from the bearing, so that a rotation gap is left between the outer cover and the outer seal. The edges of the fitting parts of the outer seal, the first inner seal and the second inner seal are all provided with round corners to avoid burr generation; the two ends of the fitting part of the light-pulling axle and the first inner seal and the second inner seal are all provided with chamfers. This facilitates bidirectional pressing during production, reduces the identification time of workers during assembly, facilitates simultaneous pressing, and greatly increases the installation efficiency.

[0028] The working principle of the utility model is that the king-shaped sealing part is arranged on the outer seal to facilitate simultaneous pressing of the outer seal, the first inner seal and the second inner seal, thereby improving the working efficiency, the tapered sealing channel is arranged on the end of the outer seal close to the bearing, which can effectively avoid the problem that the deformation of the outer seal caused by interference fit with the bearing seat during pressing leads to tight sealing gap, and the flexibility of the carrier roller is poor, and can effectively alleviate the phenomenon that the sealing channel is too tight due to extrusion of the pipe material and the bearing seat caused by material expansion of the high molecular carrier roller under high temperature working conditions.

[0029] The above only describes preferred embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high temperature seizure resistant polymer idler comprising a silent bearing block, characterized in that: The mute bearing seat comprises a bearing seat body and a inner block, a bearing, a first inner seal, a second inner seal, an outer seal and an outer cover arranged in the bearing seat body, the inner block and the outer seal are respectively arranged on the inner side and the outer side of the outer ring of the bearing, the inner part of the outer seal is provided with a wang-shaped sealing part, one end of the wang-shaped sealing part close to the bearing is provided with a tapered sealing channel for preventing the outer seal from being locked with the first inner seal, the first inner seal and the second inner seal are respectively arranged on the inner side and the outer side of the wang-shaped sealing part and are matched with the wang-shaped sealing part, the outer seal is respectively matched with the first inner seal and the second inner seal, the side of the first inner seal away from the second inner seal is matched with the inner ring of the bearing, the side of the second inner seal away from the first inner seal is matched with the outer cover, and the outer cover is matched with the bearing seat body away from the inner block.

2. The high temperature seizure resistant polymer idler of claim 1, wherein: The mute bearing seat is made of PA66+15% glass fiber material, and a plurality of mute holes are uniformly distributed on the end of the mute bearing seat away from the outer cover.

3. The high temperature seizure resistant polymer idler of claim 2, wherein: The mute bearing seat further comprises a thin-walled steel pipe, an axle block, a light-pulling shaft and an ultrahigh molecular pipe, the two mute bearing seats are clamped on the two ends of the ultrahigh molecular pipe, the thin-walled steel pipe is arranged in the ultrahigh molecular pipe and between the two mute bearing seats, the light-pulling shaft is arranged in the thin-walled steel pipe and the two ends of the light-pulling shaft are respectively connected with the corresponding mute bearing seat, the two ends of the thin-walled steel pipe are respectively sleeved on the inner end of the corresponding bearing seat body, and the end of the thin-walled steel pipe extends above the bearing, the axle block is clamped on the light-pulling shaft and abuts against the side of the outer cover away from the second inner seal.

4. The high temperature seizure resistant polymer idler of claim 3, wherein: The inner side of the outer cover is matched with the side of the outer seal away from the bearing.

5. A high temperature seizure resistant polymer idler as claimed in claim 3 or 4, characterised in that: The edges of the matched parts of the outer seal, the first inner seal and the second inner seal are respectively provided with a round corner, and the two ends of the matched parts of the first inner seal, the second inner seal and the light-pulling shaft are respectively provided with a chamfer.

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