Carrier idler shaft head fall prevention device

Abstract

A carrier idler shaft head drop-off prevention device used in a U-shaped carrier idler bracket is provided. [Solution] A carrier idler bracket (1) is provided with a carrier idler groove (11), and the device includes a pressing structure (2) and a mounting structure (3), mounting holes (12) are provided symmetrically on both sides of the carrier idler bracket, the axes of the mounting holes and the axis of the carrier idler groove are perpendicular to each other, the pressing structure is provided with a pressing stage, the pressing stage abuts against the upper end of the shaft head of the carrier idler, the mounting structure is freely arranged on both ends of the pressing structure, and the mounting structure passes through the mounting holes.

Description

Technical Field

[0001] The present invention relates to the field of conveyor idler equipment, and particularly to a device for preventing the shaft head of a carrier idler from falling off.

Background Art

[0002] The carrier idler of a conveyor plays an important role in the process of conveying materials on the conveyor. As a support structure for the conveyor belt, the carrier idler supports the weight of the materials, supports the operation of the conveyor belt, reduces the friction between the conveyor belt and the materials during operation, protects the materials, and at the same time makes the running of the conveyor belt more stable, reduces the shaking of the materials, and guarantees the normal operation of the conveyor belt.

[0003] However, during the operation of the conveyor belt, affected by external forces such as the vibration of the conveyor or the suction force of the magnetic separator, the carrier idler may fall out of the groove or jump out of the groove, and all the carrier idlers on the carrier idler may fall out of the groove, resulting in the conveyor belt directly contacting the carrier idler bracket during operation, causing serious consequences such as wear, breakage, and perforation of the belt, leading to safety accidents of the equipment and property losses.

[0004] For example, the utility model with the disclosure number CN214826468U discloses a device for preventing the carrier idler of a belt conveyor from falling off, including a carrier idler support plate. A plurality of sets of carrier idler grooves are provided through the top of the carrier idler support plate, and two sets of assembly holes are provided through the lower end of the carrier idler support plate. A rotating groove is provided on the inner wall of the carrier idler groove, a first rotating shaft is fixedly connected to the inner wall of the rotating groove, a rotating roller is movably fitted on the first rotating shaft, and two sets of brackets are fixedly connected to the edge of the top of the end of the carrier idler support plate.

[0005] However, in the above-mentioned conventional technology, by providing a dropout prevention rod at the upper end of the carrier idler groove, it is possible to avoid the shaft head of the carrier idler from popping out of the carrier idler groove. However, since the distance between the shaft head and the dropout prevention rod is relatively large, during the operation of the conveyor, the shaft head pops out and collides with the dropout prevention rod, resulting in a short service life. Furthermore, this dropout prevention structure cannot be applied to a carrier idler bracket with a small upper space, and the attachment and detachment of the overall structure are relatively complicated.

Summary of the Invention

Means for Solving the Problems

[0006] The object of the present invention is to provide a shaft head dropout prevention device for a carrier idler in order to overcome the above-mentioned drawbacks of the conventional technology that the structure for preventing dropout by a dropout prevention rod provided above the carrier idler bracket is complicated in terms of attachment and detachment as a whole.

[0007] The object of the present invention may be achieved by the following technical solutions.

[0008] A shaft head dropout prevention device for a carrier idler used for a U-shaped carrier idler bracket, wherein the carrier idler bracket is provided with a carrier idler groove, the device includes a pressing structure and a mounting structure, mounting holes are symmetrically provided on both sides of the carrier idler bracket, the axis of the mounting hole and the axis of the carrier idler groove are perpendicular to each other, the pressing structure is provided with a pressing stage, the pressing stage abuts against the upper end of the shaft head of the carrier idler, the mounting structure can be arranged telescopically at both ends of the pressing structure, and the mounting structure passes through the mounting hole.

[0009] Preferably, a spring fixing cavity is provided inside the pressing structure, a spring is provided inside the spring fixing cavity, through holes are provided at both ends of the spring fixing cavity, the mounting structure is slidably arranged in the through holes, the spring contacts and connects to the mounting structure, and is used to reset the mounting structure after compression.

[0010] Preferably, the mounting structure includes two circular contacts, the circular contacts match the shape of the mounting holes, and the two circular contacts are symmetrically arranged on both sides of the spring fixing cavity.

[0011] Preferably, a position limiting plate is provided at the end of the circular contact that contacts and connects to the spring, the diameter of the position limiting plate is larger than the diameter of the through hole and smaller than the diameter of the spring fixing cavity.

[0012] Preferably, the end of the circular contact away from the spring is chamfered circularly.

[0013] Preferably, the pressing structure further includes a fixed base, the fixed cavity is located within the fixed base, and the pressing stage is provided on the side closer to the shaft head of the fixed base.

[0014] Preferably, the fixed base includes an upper housing and a lower housing arranged symmetrically, and the upper housing and the lower housing enclose to form the spring fixing cavity and the through hole.

[0015] Preferably, the upper housing (231) and the lower housing (232) are connected by bolts.

[0016] Preferably, the fixed base is engaged with a U-shaped structure on the side of the carrier idler bracket away from the carrier idler, and the end faces on both sides of the fixed base are arranged parallel to both sides of the carrier idler bracket.

[0017] Preferably, the materials of the pressing structure (2) and the mounting structure (3) are 16Mn steel.

[0018] Compared with the prior art, the present invention has the following advantages. (1) In this solution, the mounting structure is compressed and arranged on one side of the mounting hole, the mounting structure protrudes externally and passes through the mounting hole, and the pressing structure is fixed to the carrier idler bracket. Thereby, the pressing step on the pressing structure is located at the upper end of the shaft head, hits the shaft head to limit the position of the shaft head, and when replacement is needed, the mounting structure can be removed by simply pushing the mounting structure and pulling it out from the mounting hole. By arranging telescopic mounting structures on both sides of the pressing structure, the attachment or detachment of the pressing structure can be realized by the telescoping of the mounting structure. The structure is simple and easy to operate, improving the attachment and detachment efficiency. In addition, the pressing step provided on the pressing structure, located above the shaft head and hitting the shaft head, is used to press the shaft head to prevent it from falling off. Thereby, damage to the anti-drop rod caused by the upward jump of the shaft head can be prevented, and the service life of the anti-drop device can be extended. (2) In this solution, the mounting structure adopts circular contacts and is slidably arranged in the through hole of the fixed base. By pushing the mounting structure, the mounting structure can be removed from the mounting hole of the carrier idler bracket and taken out, and reset by the spring in the fixed base for the next use. The anti-drop device has a simple structure, high operability, a wide application range, low cost, easy maintenance, and reduces the difficulty of replacement for maintenance personnel.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Explanation of Reference Numerals

[0020] 1. Carrier idler bracket, 11. Carrier idler groove, 12. Mounting hole, 2. Pressing structure, 21. Pressing stage, 22. Spring fixing cavity, 23. Fixed base, 231. Upper housing, 232. Lower housing, 3. Mounting structure, 4. Spring.

Embodiments for Carrying out the Invention

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and illustrated in the accompanying drawings may be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention. Rather, it is intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention are included within the protection scope of the present invention.

[0023] It should be noted that in the following figures, the same reference numerals and characters represent the same items. Once an item is defined in a figure, no further definition and explanation are required in subsequent figures.

[0024] In the description of the present invention, the directions and positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the directions and positional relationships shown in the drawings, or the directions and positional relationships in which the product of the invention is usually placed when in use. This is only for the purpose of explaining the present invention and simplifying the explanation, and does not indicate or imply that the device or element mentioned must have a specific direction and must be constructed and operate in a specific direction. Therefore, this cannot be understood as a limitation of the present invention.

[0025] In addition, the terms "first" and "second" are used only for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the amount of technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality" means two or more unless otherwise clearly limited.

[0026] Also, terms such as "horizontal" and "vertical" do not mean that the member needs to be completely horizontal or suspended, but rather that it may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, and it may be slightly inclined.

Embodiment

[0027] As shown in FIGS. 3 and 4, this embodiment provides a shaft head dropout prevention device for a carrier idler used in a U-shaped carrier idler bracket 1. A carrier idler groove 11 is provided in the carrier idler bracket 1. The device includes a pressing structure 2 and a mounting structure 3. Mounting holes 12 are symmetrically provided on both sides of the carrier idler bracket 1. The axis of the mounting hole 12 and the axis of the carrier idler groove 11 are perpendicular to each other. The pressing structure 2 is provided with a pressing stage 21. The pressing stage 21 abuts against the upper end of the shaft head of the carrier idler. The mounting structure 3 can be arranged at both ends of the pressing structure 2 in a telescopic manner, and the mounting structure 3 passes through the mounting hole 12.

[0028] Its operating principle is as follows. Compress the mounting structure 3 and arrange it on one side of the mounting hole 12. Project the mounting structure 3 outward to pass through the mounting hole 12, and fix the pressing structure 2 to the carrier idler bracket 1. Thereby, the pressing stage 21 on the pressing structure 2 is located at the upper end of the shaft head and abuts against the shaft head to limit the position of the shaft head. When replacement is required, the mounting structure 3 can be pushed and pulled out from the mounting hole, and the mounting structure 2 can be removed.

[0029] By arranging the telescopic mounting structure 3 on both sides of the pressing structure 2, the installation or removal of the pressing structure 2 can be realized by the telescoping of the mounting structure 3. The structure is simple and easy to operate, improving the attachment and detachment efficiency. Also, the pressing stage 21 provided on the pressing structure 2, located above the shaft head and abutting against the shaft head, is used to press the shaft head to prevent dropout. Thereby, damage to the dropout prevention rod caused by the shaft head jumping up can be prevented, and the service life of the dropout prevention device can be extended.

[0030] As shown in FIGS. 1 and 2, in a preferred embodiment, a spring fixing cavity 22 is provided inside the pressing structure 2. A spring 4 is provided inside the spring fixing cavity 22. Through holes are provided at both ends of the spring fixing cavity 22. The mounting structure 3 is arranged to be slidable inside the through holes. The spring 4 contacts and connects to the mounting structure 3 and is used to reset the mounting structure 3 after compression.

[0031] Specifically, the mounting structure 3 includes two circular contacts. The circular contacts match the shape of the mounting holes 12, and the two circular contacts are symmetrically arranged on both sides of the spring fixing cavity 22. A position limiting plate is provided at the end that contacts and connects to the spring 4 of the circular contact. The diameter of the position limiting plate is larger than the diameter of the through hole and smaller than the diameter of the spring fixing cavity 22.

[0032] By adopting the circular contact as the mounting structure and slidably arranging it in the through hole of the fixed base, the mounting structure can be removed and taken out from the mounting hole of the carrier idler bracket by pressing the mounting structure. It can be reset by the spring in the fixed base and prepared for the next use. The anti-drop device has a simple structure, high operability, wide application range, low cost, easy maintenance, and reduces the difficulty of replacement for maintenance personnel.

[0033] The end of the circular contact away from the spring 4 is chamfered in a circular shape. The rebound parts on both sides adopt a round head design to prevent injury to people caused by collisions.

[0034] Furthermore, the pressing structure 2 further includes a fixed base 23. The fixed cavity 22 is located within the fixed base 23, and the pressing stage 21 is provided on the side close to the shaft head of the fixed base 23. The fixed base 23 includes a symmetrically arranged upper housing 231 and a lower housing 232. The upper housing 231 and the lower housing 232 enclose to form the spring fixing cavity 22 and the through hole. The upper housing 231 and the lower housing 232 are connected by bolts.

[0035] After disassembling the upper housing 231 and the lower housing 232, the spring 4 and the circular contact are installed in the spring fixing cavity and the through hole, and by fixing the upper housing 231 and the lower housing 232, the assembly of the anti-drop device can be realized. The structure is simple and the assembly is convenient.

[0036] The fixed base 23 is engaged with the U-shaped structure on the side of the carrier idler bracket 1 away from the carrier idler, and the end faces on both sides of the fixed base 23 are arranged parallel to both sides of the carrier idler bracket 1. The central part of the anti-drop device adopts a square design that fits the plane of the carrier idler bracket. When pressed downward, it stabilizes the mounting surface by using both sides of the U-shaped carrier idler bracket, enhancing stability during use.

[0037] Specifically, the materials of the pressing structure 2 and the mounting structure 3 are 16Mn steel. Not only is it difficult for these components to deform even when subjected to multiple external forces such as the upward jump and rebound impact of the carrier idler, but the cost is also low. It reduces the abnormal damage caused to the conveyor belt when the shaft head of the carrier idler falls off due to external forces during the operation of the conveyor belt, extends the service life of the conveyor belt, and improves economic efficiency.

[0038] As described above, the preferred specific embodiments of the present invention have been described in detail. It should be understood by those skilled in the art that many modifications and changes can be made based on the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, inference, or limited experiments based on the concept of the present invention and based on the prior art should fall within the protection scope determined by the claims.

Claims

1. A shaft head drop-out prevention device for a carrier idler, which is used for a U-shaped carrier idler bracket (1) and has a carrier idler groove (11) thereon, the shaft head drop-out prevention device includes a pressing structure (2) and an attachment structure (3), attachment holes (12) are symmetrically provided on both sides of the carrier idler bracket (1), the axes of the attachment holes (12) and the axis of the carrier idler groove (11) are perpendicular to each other, the pressing structure (2) is provided with a pressing stage (21), the pressing stage (21) abuts against the upper end of the shaft head of the carrier idler, the attachment structure (3) is arranged at both ends of the pressing structure (2) so as to be freely expandable and contractible, and the attachment structure (3) passes through the attachment hole (12).

2. The shaft head drop-off prevention device of a carrier idler as described in claim 1, characterized in that a spring fixing cavity (22) is provided inside the pressing structure (2), a spring (4) is provided inside the spring fixing cavity (22), through holes are provided at both ends of the spring fixing cavity (22), the mounting structure (3) is slidably disposed in the through holes, the spring (4) is in contact with and connected to the mounting structure (3), and is used to reset the mounting structure (3) after compression.

3. The shaft head dropout prevention device of a carrier idler as described in claim 2, characterized in that the mounting structure (3) includes two circular contacts, the circular contacts match the shape of the mounting hole (12), and the two circular contacts are symmetrically arranged on both sides of the spring fixing cavity (22).

4. The shaft head drop-off prevention device for a carrier idler as described in claim 3, characterized in that a position limiting plate is provided at the end of the circular contact that contacts and connects to the spring (4), and the diameter of the position limiting plate is larger than the diameter of the through hole and smaller than the diameter of the spring fixing cavity (22).

5. 4. The shaft head drop-off prevention device of a carrier idler according to claim 3, characterized in that the end of the circular contact point remote from the spring (4) is chamfered into a circular shape.

6. The shaft head fall-off prevention device of a carrier idler as described in claim 2, characterized in that the pressing structure (2) further includes a fixed base (23), the spring fixing cavity (22) is located within the fixed base (23), and the pressing stage (21) is provided on the side of the fixed base (23) closer to the shaft head.

7. The shaft head drop-out prevention device for a carrier idler as described in claim 6, characterized in that the fixed base (23) includes an upper housing (231) and a lower housing (232) arranged symmetrically, and the upper housing (231) and the lower housing (232) define a spring fixing cavity (22) and a through hole.

8. The shaft head drop prevention device for a carrier idler according to claim 7, wherein the upper housing (231) and the lower housing (232) are connected by bolts.

9. The shaft head drop-off prevention device for a carrier idler as described in claim 6, characterized in that the fixed base (23) is engaged with a U-shaped structure on the side of the carrier idler bracket (1) away from the carrier idler, and both end faces of the fixed base (23) are arranged parallel to both sides of the carrier idler bracket (1).

10. The shaft head drop-off prevention device for a carrier idler according to claim 1, characterized in that the pressing structure (2) and the mounting structure (3) are made of 16Mn steel.

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