Nonmetal carrier roller and belt conveyor

Abstract

The utility model relates to a non-metal carrier roller and a belt conveyor, and aims to solve the technical problem that the middle part of the non-metal carrier roller is easy to collapse. The nonmetal carrier roller comprises a working shaft, a barrel, an outer end coaxially arranged on the working shaft in a sleeving mode, an end supporting structure supported between the end of the barrel and the working shaft and a middle supporting structure supported between the middle of the barrel and the working shaft, the middle supporting structure comprises a supporting sleeve, and the inner circumferential face of the supporting sleeve is spaced from the working shaft; the outer circumferential surface is fixedly connected with the inner circumferential wall of the cylinder body, the middle bearing is arranged between the supporting sleeve and the working shaft, and the end face of the middle oil seal ring is connected with the end face of the middle bearing in a sealed mode so that an oil storage cavity can be defined by the middle oil seal ring and the middle bearing.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of belt conveyors, in particular to a non-metallic carrier roller and a belt conveyor. BACKGROUND

[0002] The carrier roller is an important component of the belt conveyor, which supports the belt to facilitate the belt conveyor to transport materials. The greater the self-weight of the carrier roller, the greater the energy consumption during operation. The conventional carrier roller is usually made of metal or resin. The metal material has excellent performance, but its density is relatively large, resulting in a large self-weight of the carrier roller. Although the resin material has a small density, its mechanical performance is poor, resulting in a large self-weight of the carrier roller when meeting the design requirements.

[0003] The fiber-reinforced thermoplastic composite material has the advantages of excellent mechanical performance and low density. When the carrier roller is made of the material, the energy consumption of the belt conveyor during operation can be effectively reduced. The non-metallic material is not resistant to high temperature. For example, the use temperature of polyvinyl chloride thermoplastic polymer is up to 80-100℃ (the temperature of the belt conveyor during normal operation is about 60℃). When the carrier roller is stuck, the sliding friction between the belt and the carrier roller generates heat rapidly. The non-metallic carrier roller can collapse rapidly to protect the belt, while the metal is difficult to collapse and has a temperature resistance much higher than that of the belt, resulting in the final burning of the belt. Generally, the value of the belt is much higher than that of the carrier roller. Therefore, the non-metallic carrier roller can not only effectively reduce the energy consumption during operation, but also protect the belt.

[0004] However, for a non-metallic carrier roller with a long length, the middle part of the cylinder body may have a waist collapse problem due to the low modulus of the cylinder body itself. CONTENT OF THE INVENTION

[0005] The purpose of the present disclosure is to provide a non-metallic carrier roller and a belt conveyor to solve the technical problem that the middle part of the non-metallic carrier roller is prone to waist collapse.

[0006] In order to achieve the above purpose, the present disclosure provides a non-metallic carrier roller, which comprises a working shaft, a cylinder body coaxially sleeved on the outer end of the working shaft, an end support structure supported between the end of the cylinder body and the working shaft, and a middle support structure supported between the middle of the cylinder body and the working shaft. The middle support structure comprises a support sleeve, an inner circumferential surface of the support sleeve being spaced apart from the working shaft, an outer circumferential surface of the support sleeve being fixedly connected to the inner circumferential wall of the cylinder body, a middle bearing arranged between the support sleeve and the working shaft, and a middle oil seal ring, an end surface of the middle oil seal ring being sealingly connected to an end surface of the middle bearing to form an oil storage cavity together with the middle bearing.

[0007] Optionally, an annular mounting groove is arranged on the inner circumferential surface of the support sleeve, and the middle bearing and the middle oil seal ring are accommodated in the annular mounting groove.

[0008] Optionally, the support sleeve comprises a first annular portion and a second annular portion which are spliced along the axial direction of the non-metallic carrier roller, and the annular mounting groove is arranged on the inner circumferential surface of the first annular portion and / or the second annular portion.

[0009] Optionally, the support sleeve and the barrel are in interference fit or transition fit, and the support sleeve and the barrel are connected through spline connection.

[0010] Optionally, the outer ring of the middle bearing and the support sleeve are in interference fit or transition fit, and the inner ring of the middle bearing and the working shaft are in interference fit or transition fit.

[0011] Optionally, the outer circumferential surface of the middle oil seal ring and the inner circumferential surface of the support sleeve are in interference fit or transition fit, and the inner circumferential surface of the middle oil seal ring and the working shaft are in interference fit or transition fit.

[0012] Optionally, the non-metallic carrier roller comprises a plurality of groups of the middle support structure, and the plurality of groups of the middle support structure are arranged at intervals along the axial direction of the non-metallic carrier roller.

[0013] Optionally, the end support structure comprises: a bearing seat, the inner circumferential surface of which is spaced apart from the working shaft, and the outer circumferential surface of which is fixedly connected to the inner circumferential wall of the barrel; an end bearing arranged between the bearing seat and the working shaft; an end oil seal ring arranged in the inner section of the end bearing along the axial direction of the non-metallic carrier roller, the end surface of the end oil seal ring being sealingly connected to the inner end surface of the end bearing to form an oil storage cavity together with the end bearing; an outer sealing ring arranged at the outer end of the end bearing along the axial direction of the non-metallic carrier roller, the inner end surface of the outer sealing ring being sealingly connected to the outer end surface of the outer ring of the end bearing to form an oil storage cavity together with the end bearing, and the outer circumferential surface of the outer sealing ring being sealingly connected to the inner circumferential surface of the bearing seat; an inner sealing ring arranged at the outer end of the outer sealing ring along the axial direction of the non-metallic carrier roller, the inner end surface of the inner sealing ring being sealingly connected to the outer end surface of the inner ring of the end bearing, and the inner circumferential surface of the inner sealing ring being sealingly connected to the working shaft; the inner sealing ring being engaged with the outer sealing ring along the axial direction of the non-metallic carrier roller; a cover arranged at the outer end of the inner sealing ring along the axial direction of the non-metallic carrier roller, the cover abutting against the outer end surface of the inner sealing ring; and an end cover arranged at the outer end of the cover along the axial direction of the non-metallic carrier roller and fixedly connected to the working shaft along the axial direction of the non-metallic carrier roller.

[0014] Optionally, the inner sealing ring includes a first annular body, a bearing inner ring support protrusion, and multiple sealing protrusions. The multiple sealing protrusions are coaxially spaced and protrude from the inner end face of the first annular body toward the outer sealing ring. The bearing inner ring support protrusion protrudes from the inner end face of the first annular body toward the end bearing, so that its end face is sealed to the outer end face of the inner ring of the end bearing. The outer sealing ring includes a second annular body and a bearing outer ring support protrusion. A sealing groove for inserting the sealing protrusion is provided on the outer end face of the second annular body. The bearing outer ring support protrusion protrudes from the inner end face of the second annular body toward the end bearing, so that its end face is sealed to the outer end face of the outer ring of the end bearing.

[0015] Based on the above technical solutions, this disclosure also provides a belt conveyor, including the non-metallic idlers mentioned in the above technical solutions.

[0016] Through the above technical solution, the non-metallic idler provided in this disclosure is equipped with a central support structure. This central support structure effectively supports the middle of the cylinder and the working shaft, avoiding the problem of the non-metallic idler's cylinder sagging due to insufficient rigidity. This results in better overall rigidity of the non-metallic idler during actual use. Furthermore, both ends of the central bearing are equipped with central oil seal rings, which, together with the central bearing, form an oil reservoir. This allows the central bearing to operate in a sealed lubrication environment, improving the smoothness of the cylinder's rotation relative to the working shaft.

[0017] Through the above technical solutions, the belt conveyor provided in this disclosure has the same technical effect as the non-metallic idler roller in the above technical solutions. To avoid unnecessary repetition, it will not be described in detail here.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a cross-sectional view of a non-metallic idler roller according to a specific embodiment of this disclosure;

[0021] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0022] Explanation of reference numerals in the attached figures

[0023] 10-Working shaft, 20-Cylinder body

[0024] 1-End support structure; 11-Bearing housing; 12-End bearing; 13-End oil seal ring; 14-Inner sealing ring; 141-First annular body; 142-Bearing inner ring support convex ring; 143-Sealing convex ring; 15-Outer sealing ring; 151-Second annular body; 152-Bearing outer ring support convex ring; 153-Sealing groove; 16-Cover; 17-End cover; 18-Retaining ring.

[0025] 2-Central support structure, 201-First annular part, 202-Second annular part, 21-Support sleeve, 211-Annular mounting groove, 22-Central bearing, 23-Central oil seal ring. Detailed Implementation

[0026] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0027] In this disclosure, unless otherwise stated, directional terms such as "inner end" and "outer end" refer to the end of the corresponding component facing the end of the cylinder along the axial direction of the non-metallic idler roller as the outer end and the end facing away from the end of the cylinder as the inner end. The terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not indicate sequence or importance. Furthermore, when the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0028] According to a specific embodiment of this disclosure, a non-metallic idler roller is provided, with reference to... Figure 1 and Figure 2 As shown, the non-metallic idler roller may include a working shaft 10, a cylinder 20, an end support structure 1, and a middle support structure 2.

[0029] Among them, the cylinder 20 can be coaxially sleeved on the outer end of the working shaft 10, the end support structure 1 can be supported between the end of the cylinder 20 and the working shaft 10, and the middle support structure 2 can be supported between the middle part (i.e., the non-end position) of the cylinder 20 and the working shaft 10. In other words, the middle support structure 2 is set between the two sets of end support structures 1.

[0030] Specifically, the central support structure 2 may include a support sleeve 21, a central bearing 22, and a central oil seal ring 23. The inner circumferential surface of the support sleeve 21 is spaced apart from the working shaft 10, and the outer circumferential surface is fixedly connected to the inner circumferential wall of the cylinder 20. The central bearing 22 may be disposed between the support sleeve 21 and the working shaft 10, that is, the inner ring is fixedly connected to the working shaft 10, and the outer ring is fixedly connected to the inner circumferential surface of the support sleeve 21. The end face of the central oil seal ring 23 may be sealed to the end face of the central bearing 22 to form an oil storage cavity. The outer circumferential surface of the central oil seal ring 23 may be sealed to the inner circumferential surface of the support sleeve 21, and the inner circumferential surface of the central oil seal ring 23 may be sealed to the working shaft 10 to prevent oil leakage in the oil storage cavity.

[0031] Through the above technical solution, the non-metallic idler provided in this disclosure is provided with a central support structure 2. The central support structure 2 can effectively support the middle of the cylinder 20 and the working shaft 10, avoiding the problem of the cylinder 20 sagging in the middle due to insufficient rigidity, so that the non-metallic idler has better overall rigidity in actual use. In addition, both ends of the central bearing 22 are provided with central oil seal rings 23. The central oil seal rings 23 and the central bearing 22 form an oil storage cavity, so that the central bearing 22 can work in a sealed lubrication environment, improving the smoothness of rotation of the cylinder 20 relative to the working shaft 10.

[0032] To limit the movement of the central bearing 22 and the central oil seal ring 23 along the axial direction of the non-metallic idler roller, refer to Figure 1 As shown, an annular mounting groove 211 can be provided on the inner circumferential surface of the support sleeve 21, and the central bearing 22 and the central oil seal ring 23 can be accommodated in the annular mounting groove 211. The sidewall of the annular mounting groove 211 can limit the movement of the central bearing 22 and the central oil seal ring 23 along the axial direction of the non-metallic idler roller.

[0033] To facilitate the assembly of the central support structure 2, refer to Figure 1 As shown, the support sleeve 21 may include a first annular portion 201 and a second annular portion 202 spliced ​​along the axial direction of the non-metallic idler roller, and an annular mounting groove 211 may be provided on the inner circumferential surface of the first annular portion 201 and / or the second annular portion 202. During assembly, the central oil seal ring 23 and the central bearing 22 can be assembled onto the working shaft 10 first, and then the first annular portion 201 and the second annular portion 202 can be inserted into the cylinder 20 from both ends of the cylinder 20, respectively. During the splicing of the first annular portion 201 and the second annular portion 202, the central bearing 22 and the central oil seal ring 23 can be accommodated in the annular mounting groove 211.

[0034] In order to fix the support sleeve 21 to the cylinder 20, the support sleeve 21 and the cylinder 20 can be an interference fit or a transition fit, and the support sleeve 21 and the cylinder 20 can be connected by a spline.

[0035] In order to assemble the intermediate bearing 22 between the support sleeve 21 and the working shaft 10, the outer ring of the intermediate bearing 22 and the support sleeve 21 can be an interference fit or a transition fit, and the inner ring of the intermediate bearing 22 and the working shaft 10 can be an interference fit or a transition fit.

[0036] In order to make the middle oil seal ring 23 seal and connect to the support sleeve 21 and the working shaft 10 respectively, the outer peripheral surface of the middle oil seal ring 23 and the inner peripheral surface of the support sleeve 21 can be an interference fit or a transition fit, and the inner peripheral surface of the middle oil seal ring 23 and the working shaft 10 can be an interference fit or a transition fit.

[0037] In addition, the non-metallic idler may include multiple sets of central support structures 2, which can be arranged at intervals along the axial direction of the non-metallic idler. That is, multiple sets of central support structures 2 can be arranged at intervals between two sets of end support structures 1 to increase the support strength for the middle part of the cylinder 20.

[0038] refer to Figure 1 and Figure 2 As shown, the end support structure 1 may include a bearing housing 11, an end bearing 12, an end oil seal ring 13, an inner sealing ring 14, an outer sealing ring 15, a cover 16, and an end cap 17.

[0039] The inner circumferential surface of the bearing housing 11 is spaced apart from the working shaft 10, and the outer circumferential surface can be fixedly connected to the inner circumferential wall of the cylinder 20 (for example, by interference fit or transition fit). In addition, adhesive bonding can be added at the joint between the cylinder 20 and the bearing housing 11.

[0040] The end bearing 12 can be disposed between the bearing housing 11 and the working shaft 10. That is, the outer ring of the end bearing 12 can be fixedly connected to the bearing housing 11 (e.g., by interference fit or transition fit), and the inner ring of the end bearing 12 can be fixedly connected to the working shaft 10 (e.g., by interference fit or transition fit).

[0041] The end oil seal ring 13 can be disposed along the axial direction of the non-metallic idler roller at the inner end of the end bearing 12. The end face of the end oil seal ring 13 can be sealed and connected with the inner end face of the end bearing 12 to form an oil storage cavity.

[0042] The outer sealing ring 15 can be disposed at the outer end of the end bearing 12 along the axial direction of the non-metallic idler roller. The inner end face of the outer sealing ring 15 can be sealed and connected with the outer end face of the outer ring of the end bearing 12 to form an oil reservoir, so that oil reservoirs are formed at both ends of the end bearing 12, thereby enabling the end bearing 12 to operate in a sealed lubrication environment and improving the rotational smoothness of the cylinder 20 relative to the working shaft 10. In addition, the outer peripheral surface of the outer sealing ring 15 can be sealed and connected with the inner peripheral surface of the bearing housing 11 (for example, by interference fit or transition fit).

[0043] The inner sealing ring 14 can be disposed at the outer end of the outer sealing ring 15 along the axial direction of the non-metallic idler roller. The inner end face of the inner sealing ring 14 can be sealed and connected with the outer end face of the inner ring of the end bearing 12. The inner circumferential surface of the inner sealing ring 14 can be sealed and connected with the working shaft 10 (for example, by interference fit or transition fit). The inner sealing ring 14 can also be engaged with the outer sealing ring 15 along the axial direction of the non-metallic idler roller.

[0044] The cover 16 can be disposed along the axial direction of the non-metallic idler roller at the outer end of the inner sealing ring 14, and the cover 16 can abut against the outer end face of the inner sealing ring 14.

[0045] The end cap 17 can be disposed at the outer end of the cover 16 along the axial direction of the non-metallic roller, and can be fixed relative to the working shaft 10 along the axial direction of the non-metallic roller (e.g., by interference fit or transition fit). In addition, adhesive bonding can be added at the joint between the end cap 17 and the working shaft 10.

[0046] In addition, refer to Figure 1 and Figure 2 As shown, a retaining ring 18 can also be provided at the outer end of the end cap 17 to further increase the axial limit of each component in the end support structure 1.

[0047] To achieve axial engagement between the inner sealing ring 14 and the outer sealing ring 15, refer to Figure 2 As shown, the inner sealing ring 14 may include a first annular body 141, a bearing inner ring support protrusion 142, and a plurality of sealing protrusions 143. The plurality of sealing protrusions 143 may be arranged coaxially at intervals and protrude from the inner end face of the first annular body 141 toward the outer sealing ring 14. The bearing inner ring support protrusion 142 may protrude from the inner end face of the first annular body 141 toward the end bearing 12, so that its end face is sealed to the outer end face of the inner ring of the end bearing 12.

[0048] The outer sealing ring 15 may include a second annular body 151 and a bearing outer ring support protrusion 152. A sealing groove 153 for inserting the sealing protrusion 143 may be provided on the outer end face of the second annular body 151. The bearing outer ring support protrusion 152 may protrude from the inner end face of the second annular body 151 toward the end bearing 12, so that its end face is sealed to the outer end face of the outer ring of the end bearing 12. Through the insertion and engagement of the sealing protrusion 143 and the sealing groove 153, the inner sealing ring 14 and the outer sealing ring 15 can be axially joined to ensure the sealing effect of the end support structure 1. This ensures that the end bearing 12 operates in a sealed lubrication environment and prevents external dust and impurities from entering the cylinder 20 and then the middle support structure 2 through the end support structure 1.

[0049] Based on the above technical solutions, this disclosure also provides a belt conveyor, including the non-metallic idlers mentioned in the above technical solutions.

[0050] Through the above technical solutions, the belt conveyor provided in this disclosure has the same technical effect as the non-metallic idler roller in the above technical solutions. To avoid unnecessary repetition, it will not be described in detail here.

[0051] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0053] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A non-metallic idler roller, characterized in that, include: Working axis The cylindrical body is coaxially sleeved on the outer end of the working shaft. An end support structure is provided, supporting the end of the cylinder between the working shaft and the end of the cylinder. A central support structure is provided, positioned between the middle of the cylinder and the working shaft. The central support structure includes: The support sleeve has an inner circumferential surface spaced from the working shaft, and an outer circumferential surface fixedly connected to the inner circumferential wall of the cylinder. A central bearing is disposed between the support sleeve and the working shaft, and A central oil seal ring is provided, the end face of which is sealed to the end face of the central bearing to form an oil reservoir.

2. The non-metallic idler roller according to claim 1, characterized in that, An annular mounting groove is provided on the inner circumferential surface of the support sleeve, and the central bearing and the central oil seal ring are accommodated in the annular mounting groove.

3. The non-metallic idler roller according to claim 2, characterized in that, The support sleeve includes a first annular portion and a second annular portion spliced ​​along the axial direction of the non-metallic idler roller, and the annular mounting groove is disposed on the inner circumferential surface of the first annular portion and / or the second annular portion.

4. The non-metallic idler roller according to claim 1, characterized in that, The support sleeve and the cylinder are interference fit or transition fit, and the support sleeve and the cylinder are connected by a spline.

5. The non-metallic idler roller according to claim 1, characterized in that, The outer ring of the central bearing and the support sleeve are fitted with an interference fit or a transition fit, and the inner ring of the central bearing and the working shaft are fitted with an interference fit or a transition fit.

6. The non-metallic idler roller according to claim 1, characterized in that, The outer circumferential surface of the central oil seal ring and the inner circumferential surface of the support sleeve are in an interference fit or a transition fit, and the inner circumferential surface of the central oil seal ring and the working shaft are in an interference fit or a transition fit.

7. The non-metallic idler roller according to claim 1, characterized in that, The non-metallic idler roller includes multiple sets of central support structures, which are arranged at intervals along the axial direction of the non-metallic idler roller.

8. The non-metallic idler roller according to claim 1, characterized in that, The end support structure includes: The bearing housing has an inner circumferential surface spaced from the working shaft, and an outer circumferential surface fixedly connected to the inner circumferential wall of the cylinder. An end bearing is disposed between the bearing housing and the working shaft. An end oil seal ring is disposed along the axial direction of the non-metallic idler roller at the inner end of the end bearing. The end face of the end oil seal ring is sealed to the inner end face of the end bearing to form an oil storage cavity. An outer sealing ring is disposed along the axial direction of the non-metallic idler roller at the outer end of the end bearing. The inner end face of the outer sealing ring is sealed to the outer end face of the outer ring of the end bearing to form an oil reservoir. The outer peripheral surface of the outer sealing ring is sealed to the inner peripheral surface of the bearing housing. An inner sealing ring is disposed at the outer end of the outer sealing ring along the axial direction of the non-metallic idler roller. The inner end face of the inner sealing ring is sealed to the outer end face of the inner ring of the end bearing. The inner circumferential surface of the inner sealing ring is sealed to the working shaft. The inner sealing ring engages with the outer sealing ring along the axial direction of the non-metallic idler roller. A cover, disposed axially along the non-metallic idler roller at the outer end of the inner sealing ring, abuts against the outer end face of the inner sealing ring. An end cap is disposed at the outer end of the cover along the axial direction of the non-metallic roller and is fixed relative to the working shaft along the axial direction of the non-metallic roller.

9. The non-metallic idler roller according to claim 8, characterized in that, The inner sealing ring includes a first annular body, a bearing inner ring support protrusion, and multiple sealing protrusions. The multiple sealing protrusions are coaxially spaced and protrude from the inner end face of the first annular body toward the outer sealing ring. The bearing inner ring support protrusion protrudes from the inner end face of the first annular body toward the end bearing, so that its end face is sealed to the outer end face of the inner ring of the end bearing. The outer sealing ring includes a second annular body and a bearing outer ring support protrusion. A sealing groove is provided on the outer end face of the second annular body for inserting the sealing protrusion. The bearing outer ring support protrusion protrudes from the inner end face of the second annular body toward the end bearing, so that its end face is sealed to the outer end face of the outer ring of the end bearing.

10. A belt conveyor, characterized in that, Includes the non-metallic idler rollers according to any one of claims 1 to 9.

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