Tensioning mechanism and double-helix circulating conveying belt device

Abstract

The utility model provides a tensioning mechanism and a double-helix circulation conveying belt device, and relates to the technical field of conveying equipment. The movable frame is movably arranged on the frame body; the first roller is rotationally arranged on the frame body; the second roller is rotationally arranged on the movable frame, and the central axis of the second roller is parallel to the central axis of the first roller; the adjusting part is arranged on the frame body and used for driving the movable frame to move relative to the frame body, so that the distance between the first roller and the second roller is increased or decreased; a first channel for the conveying belt to pass through is formed between the first roller and the second roller, and a second channel for the conveying belt to pass through is formed between the second roller and the movable frame. Compared with the prior art, the tensioning device has the advantages that different tensioning degrees of multiple areas are achieved, and the overall production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a tensioning mechanism and a double-helix circulating conveyor belt device. Background Art

[0002] In automated production, conveyor belts are not only key equipment for material transportation but also serve as a coordinating and connecting mechanism between various process steps. Through their continuous and stable operation, conveyor belts deliver raw materials, semi-finished products, and finished products to various processing or assembly stations at a precise pace, ensuring seamless integration of the production process and significantly improving the overall efficiency of the production line.

[0003] In related technologies, conveyor belts may have different functional requirements in different production areas. Therefore, different belt tensions are often required in each area to adapt to specific processes. Current technologies often use multiple conveyor belt systems to meet these differentiated needs, with different belt tensions set for different areas.

[0004] However, the coordination of multiple conveyor belts is prone to errors in actual applications. These errors may lead to poor material transmission, affect production efficiency, and even cause the interruption of the entire production line. Utility Model Content

[0005] In order to solve the above problems, the present application provides a tensioning mechanism and a double-helix circulating conveyor belt device.

[0006] In a first aspect, the present application provides a tensioning mechanism, which adopts the following technical solution:

[0007] A tensioning mechanism for clamping a conveyor belt, comprising:

[0008] frame;

[0009] a movable frame movably arranged on the frame body;

[0010] a first roller rotatably mounted on the frame;

[0011] A second roller is rotatably mounted on the movable frame, wherein the central axis of the second roller is parallel to the central axis of the first roller; and

[0012] an adjusting member, disposed on the frame, for driving the movable frame to move relative to the frame, so as to increase or decrease the distance between the first roller and the second roller;

[0013] A first passage for the conveyor belt to pass through is formed between the first roller and the second roller, and a second passage for the conveyor belt to pass through is formed between the second roller and the movable frame.

[0014] Preferably, the movable frame is connected to the frame body so as to rotate around a first axis, the first axis is parallel to the central axis of the first roller, and the adjusting member is used to drive the movable frame to rotate around the first axis, so that the second roller can be fitted with the first roller when the movable frame rotates around the first axis;

[0015] And / or, the diameter of the first roller is greater than the diameter of the second roller.

[0016] Preferably, the central axis of the first roller and the central axis of the second roller are located in a first plane, and the projection of the first axis on the first plane is parallel to the central axis of the second roller.

[0017] Preferably, the adjusting member comprises an adjusting bolt, the adjusting bolt is threadably engaged with the frame body, and an end of the adjusting bolt abuts against the movable frame;

[0018] When the adjusting bolt is rotated, the movable frame can be pushed to rotate relative to the frame body, so that the distance between the first roller and the second roller increases or decreases.

[0019] Preferably, the movable frame is provided with a matching portion, and the end of the adjusting bolt abuts against the matching portion;

[0020] And / or, the contact end of the adjusting bolt and the movable frame is configured as a spherical surface.

[0021] Preferably, the movable frame is provided with a guide groove to guide the conveyor belt into the second channel.

[0022] Preferably, the movable frame is detachably provided with a guide member, at least a portion of the guide groove is located on the guide member, and the guide member is located on the side of the second roller facing away from the first roller.

[0023] Preferably, the guide groove located on the side of the guide member away from the second roller is expanded along the first axis direction;

[0024] And / or, the guide member is provided with a contact portion, the contact portion protruding from a surface of the guide groove, the contact portion being configured to contact a surface of a conveyor belt passing through the guide groove.

[0025] Preferably, the contact portion is located on a side of the guide member away from the second roller.

[0026] In a second aspect, the present application provides a double-helix circulating conveyor belt device, which adopts the following technical solution:

[0027] A double-helix circulating conveyor belt device comprises a winding shaft and a conveyor belt connected end to end;

[0028] The conveyor belt includes a tensioning section and a redundant section, the tensioning section is partially spirally wound on the winding shaft, the redundant section is spirally arranged and is in a relaxed state, the spiral direction of the redundant section is opposite to the spiral direction of the conveyor belt wound on the winding shaft, and a tensioning mechanism described in the above technical solution is provided at the junction of the tensioning section and the redundant section, and the conveyor belt passes through the second channel and the first channel in sequence.

[0029] The utility model has the following advantages and beneficial effects:

[0030] By providing a first roller and a second roller, this application allows for flexible adjustment of the conveyor belt's tension, thereby achieving differential tension in different areas without replacing the conveyor belt. Specifically, through the coordinated action of the first and second rollers, the conveyor belt achieves different tension states on either side of the first and second rollers, meeting the tension requirements of different areas on the production line. This design allows for local adjustment of the conveyor belt's tension based on actual needs, thus adapting to different working environments and process requirements.

[0031] Compared to traditional systems with multiple conveyor belts, this application uses a single conveyor belt to achieve different tension levels in multiple areas. This not only simplifies the system structure, reduces costs and maintenance, but also avoids errors in the coordination of multiple conveyor belts. This structural design effectively improves overall production efficiency and reduces the risk of downtime or efficiency loss caused by conveyor belt coordination issues. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a first structural diagram of an embodiment of the present application;

[0034] Figure 2 This is a second structural diagram of an embodiment of the present application;

[0035] Figure 3 This is a third structural diagram of an embodiment of the present application;

[0036] Figure 4 is a cross-sectional view of an embodiment of the present application;

[0037] Figure 5 This is a schematic diagram of the first structure of the conveyor belt and the winding shaft;

[0038] Figure 6 2. It is a second structural diagram of the cooperation between the conveyor belt and the winding shaft;

[0039] Figure 7 It is a structural diagram of the cooperation between the conveyor belt and the tensioning mechanism.

[0040] The following are marked in the figure:

[0041] 10. Winding shaft; 20. Conveyor belt; 21. Tensioning section; 22. Redundant section; 100. Frame; 200. Movable frame; 210. Second channel; 220. Fitting portion; 230. Guide groove; 240. Guide member; 241. Contact portion; 300. First roller; 310. First channel; 400. Second roller; 500. Adjusting member; 510. Adjusting bolt; 511. Spherical surface. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0043] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0044] In some special applications, the conveyor belt may need to have two or more tension states. In other words, the tension of the conveyor belt may vary in different areas. For example, the conveyor belt may be in a tense state in some areas to ensure stable material transportation, while it may be in a relaxed state in other areas. In some cases, the conveyor belt may even exist in a relaxed state with a natural sag.

[0045] However, the inventors discovered that existing technologies typically achieve these different tensioning states by using multiple conveyor belts. This approach can easily lead to improper coordination between the multiple conveyor belts, resulting in transmission errors and affecting production efficiency. To address this issue, the present application proposes a tensioning mechanism that can control the tension in different areas of the same conveyor belt. Through this structural design, the tensioning state of different areas of the conveyor belt can be flexibly adjusted according to needs within the same system, thus avoiding the errors and synchronization issues that occur when coordinating multiple conveyor belt systems.

[0046] The following combination Figures 1 to 7 A tensioning mechanism and a double-helix circulating conveyor belt device provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0047] The first aspect of this embodiment provides a detailed description of a tensioning mechanism.

[0048] Reference Figure 1 、 Figure 6 Embodiments of the present application provide a tensioning mechanism. This mechanism is used to clamp the conveyor belt 20, thereby maintaining different tension levels on both sides of the conveyor belt 20. For example, the conveyor belt 20 includes a tensioning section 21 and a redundant section 22. The tensioning section 21 is in a tensioned state to ensure stable material transport, while the redundant section 22 is in a relaxed state. The tensioning mechanism is located at the junction of the tensioning section 21 and the redundant section 22, and by clamping the conveyor belt 20, it isolates the two areas with different tension levels.

[0049] The conveyor belt 20 is driven by pulling the tensioning section 21. As the conveyor belt 20 in the tensioning section 21 is driven, the redundant section 22 gradually passes through the tensioning mechanism and becomes the tensioning section 21. Simultaneously, the conveyor belt 20 in the tensioning section 21 gradually passes through the tensioning mechanism and becomes the redundant section 22, forming a loop of the conveyor belt 20. It is understood that because the conveyor belt 20 is an annular structure, each redundant section 22 needs to be isolated by two tensioning mechanisms.

[0050] Reference Figure 1 、 Figure 2 The tensioning mechanism includes a frame 100, a movable frame 200, a first roller 300, a second roller 400, and an adjusting member 500. The frame 100 supports the movable frame 200, the first roller 300, the second roller 400, and the adjusting member 500, serving as a foundation for support and installation. In other words, the frame 100 provides a secure mounting foundation for the movable frame 200, the first roller 300, the second roller 400, and the adjusting member 500, ensuring that these components function harmoniously within the conveyor belt 20 system.

[0051] The shape of the frame 100 can be flexibly adjusted according to specific application requirements to adapt to different production scenarios and spatial layouts, so the shape of the frame 100 is not limited here. In addition, the frame 100 is used to connect with the conveyor belt 20 device, so that the frame 100 and the conveyor belt 20 device form a whole.

[0052] In some embodiments, reference Figure 2 、 Figure 3 The movable frame 200 is movably mounted on the frame 100. The specific shape of the movable frame 200 can be designed according to actual needs and is not specifically limited here. The movable frame 200 is movably mounted on the frame 100, which means that the movable frame 200 can slide, rotate, or perform various other movements relative to the frame 100.

[0053] In some embodiments, the first roller 300 is rotatably mounted on the frame 100. The first roller 300 is a cylindrical structure and is mounted on the frame 100 via a rotatable connection. Specifically, the central axis of the first roller 300 is its rotational axis, which means that the first roller 300 can rotate around its central axis. Exemplarily, bearings and other components are provided at the connection between the first roller 300 and the frame 100, allowing the first roller 300 to rotate freely relative to the frame 100, and the bearings and other components can reduce friction between the first roller 300 and the frame 100.

[0054] In some embodiments, the second roller 400 is rotatably mounted on the movable frame 200, and the central axis of the second roller 400 is parallel to the central axis of the first roller 300. For example, the second roller 400 is cylindrical and can rotate relative to the movable frame 200 along its own axis.

[0055] A first passage 310 for the conveyor belt 20 to pass through is formed between the first roller 300 and the second roller 400, and a second passage 210 for the conveyor belt 20 to pass through is formed between the second roller 400 and the movable frame 200. It will be appreciated that during operation, the conveyor belt 20 will sequentially pass through the second passage 210 and the first passage 310. When the distance between the first roller 300 and the second roller 400 decreases, the conveyor belt 20 between the first roller 300 and the second roller 400 can be clamped, thereby restricting the position of the conveyor belt 20 and isolating the tension of the conveyor belt 20 on both sides of the first roller 300 and the second roller 400.

[0056] In some embodiments, reference Figure 2 、 Figure 3The adjusting member 500 is disposed on the frame 100 and is used to drive the movable frame 200 relative to the frame 100. Driven by the adjusting member 500, the movable frame 200 can slide and / or rotate relative to the frame 100, thereby changing the distance between the first roller 300 and the second roller 400. This allows the conveyor belt 20 to be tightened and loosened. This design allows different areas of the conveyor belt 20 to achieve different tension states, improving the adaptability and efficiency of the conveyor system.

[0057] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The movable frame 200 is connected to the frame body 100 and rotates about a first axis. The first axis is parallel to the central axis of the first roller 300. The adjusting member 500 is used to drive the movable frame 200 to rotate about the first axis. When the movable frame 200 rotates about the first axis, the second roller 400 can be brought into contact with the first roller 300. Specifically, when the movable frame 200 rotates, the first roller 300 and the second roller 400 can contact or separate from each other, thereby allowing the gap between the first roller 300 and the second roller 400 to be adjusted to zero. This design ensures effective clamping regardless of the thickness of the conveyor belt 20, avoiding the situation where the conveyor belt 20 cannot be clamped when it is thin.

[0058] According to an optional embodiment, the diameter of the first roller 300 is larger than the diameter of the second roller 400. During use, the second roller 400 can be moved closer to or further away from the first roller 300 by rotating the movable frame 200, thereby adjusting the distance between the first roller 300 and the second roller 400. The larger diameter of the first roller 300 facilitates the formation of different distances during adjustment.

[0059] This differential diameter design offers a key advantage: it avoids the difficulty of precise alignment that occurs when the two rollers have the same diameter. The larger first roller 300 allows the two rollers to more smoothly adjust their relative position when adjusting their spacing, and provides the appropriate clamping force on the conveyor belt 20 at different spacings. Even with a thin conveyor belt 20, this design ensures a precise fit and stable clamping between the first roller 300 and the second roller 400, effectively preventing the conveyor belt 20 from loosening or becoming unable to clamp.

[0060] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The central axis of the first roller 300 and the central axis of the second roller 400 are located in the first plane, and the projection of the first axis on the first plane is parallel to the central axis of the second roller 400. In other words, the projection of the first axis on the first plane does not coincide with the central axis of the second roller 400.

[0061] When the first and second rollers 300 and 400 clamp the conveyor belt 20, the reaction force of the conveyor belt 20 exerts a force on the second roller 400, which in turn causes the movable frame 200 to rotate. Because the projection of the first axis on the first plane is parallel to, but not coincident with, the central axis of the second roller 400, the force driving the movable frame 200's rotation is not the reaction force of the conveyor belt 20 itself, but rather a component of the reaction force. This reaction force, through the action of the moment arm, generates a component force, causing the movable frame 200 to rotate about the first axis.

[0062] This structural design effectively disperses stress, alleviating the loads acting on the movable frame 200 and the adjusting member 500. By reducing the stress between these components, this design not only extends the service life of the relevant components in the system but also enhances the stability and reliability of the tensioning mechanism. This improvement improves the overall efficiency of the conveyor system and ensures stable operation over extended periods of use, thereby reducing maintenance costs and the risk of downtime.

[0063] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The adjusting member 500 includes an adjusting bolt 510, which is threadedly engaged with the frame body 100, with the end of the adjusting bolt 510 abutting against the movable frame 200. When the adjusting bolt 510 rotates, it can push the movable frame 200 to rotate relative to the frame body 100, thereby increasing or decreasing the distance between the first roller 300 and the second roller 400. When the adjusting bolt 510 rotates, the position of the end of the bolt relative to the frame body 100 changes, thereby pushing the movable frame 200 to rotate about the first axis. This movement increases or decreases the distance between the first roller 300 and the second roller 400, thereby achieving precise adjustment of the spacing between the two rollers.

[0064] Specifically, when the adjusting bolt 510 is rotated, the threaded structure drives the adjusting bolt 510 to move axially, and the end of the bolt contacts the movable frame 200, pushing the movable frame 200 to rotate relative to the frame body 100. This adjustment mechanism not only allows the user to easily change the spacing between the first roller 300 and the second roller 400, but also allows for flexible adjustments based on the thickness or tension requirements of the conveyor belt 20, ensuring stable operation of the conveyor belt 20 and smooth transportation of materials.

[0065] It is important to note that when tightening the conveyor belt 20, the adjustment bolt 510 should first be used to increase the distance between the first roller 300 and the second roller 400. This step ensures sufficient space for the conveyor belt 20 to be smoothly introduced between the first roller 300 and the second roller 400. After the conveyor belt 20 is properly introduced and installed, the adjustment bolt 510 can be rotated to gradually reduce the distance between the first roller 300 and the second roller 400.

[0066] Along with the rotation of adjusting bolt 510, first roller 300 and second roller 400 can slowly approach, until conveyer belt 20 is clamped between two rollers.In this way, can ensure that conveyer belt 20 is firmly fixed, and realize the adjustment of conveyer belt 20 tension on both sides.

[0067] According to an optional embodiment, the movable frame 200 is provided with a mating portion 220, and the end of the adjusting bolt 510 abuts against the mating portion 220. For example, the mating portion 220 can be a protruding structure or a recessed structure made of a wear-resistant material to ensure that the end of the adjusting bolt 510 and the movable frame 200 can firmly contact and maintain a good mating relationship.

[0068] This design, by adding a wear-resistant mating portion 220 to the movable frame 200, effectively reduces wear between the adjusting bolt 510 and the movable frame 200, extending the service life of the system. Furthermore, the raised or recessed structure allows the end of the adjusting bolt 510 to apply force more stably, ensuring that the adjusting bolt 510 smoothly pushes the movable frame 200 to rotate, thereby more precisely adjusting the gap between the first roller 300 and the second roller 400.

[0069] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The contact end of the adjusting bolt 510 and the movable frame 200 is configured as a spherical surface 511. This spherical surface 511 design provides a flexible contact surface between the adjusting bolt 510 and the movable frame 200. Even if the movable frame 200 deviates at a certain angle during adjustment, the end of the spherical surface 511 can maintain good contact, avoiding wear or jamming caused by localized uneven force.

[0070] The spherical surface 511 allows the adjusting bolt 510 to more smoothly engage the movable frame 200 during rotation, effectively improving adjustment accuracy and efficiency. This design not only enhances stability during adjustment but also extends the service life of the contact portion 241 between the adjusting bolt 510 and the movable frame 200, thereby enhancing the reliability and durability of the entire tensioning mechanism.

[0071] According to an alternative embodiment, referring to Figure 1 、 Figure 4 The movable frame 200 is provided with a guide groove 230 to guide the conveyor belt 20 into the second channel 210. Since the tension of different areas of the conveyor belt 20 varies during operation, especially the redundant section 22, which has a lower tension, it is prone to shaking and swinging during transportation. This is not conducive to the conveyor belt 20 in the redundant section 22 passing smoothly through the tensioning mechanism and transforming into the tensioning section 21.

[0072] The guide groove 230 effectively limits the swing amplitude of the conveyor belt 20 in the redundant section 22, maintaining the stability of the conveyor belt 20. The guide groove 230 helps guide the conveyor belt 20 into the second channel 210, allowing it to smoothly enter and pass through the tensioning mechanism. This improves the operational stability of the conveyor belt 20, thereby enhancing the efficiency of the production line and the reliability of the conveyor system.

[0073] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The movable frame 200 is detachably provided with a guide member 240. At least a portion of the guide groove 230 is located on the guide member 240, which is located on the side of the second roller 400 facing away from the first roller 300. By combining the guide member 240 with the guide groove 230, the shape and position of the guide groove 230 can be flexibly adjusted to accommodate different types of conveyor belts 20 or specific operating requirements. This design not only facilitates maintenance and replacement, but also allows operators to adjust the guide groove 230 according to actual conditions, thereby improving the stability and transmission efficiency of the conveyor belt 20. Specifically, the guide member 240 is detachably mounted on the movable frame 200 by bolts.

[0074] Furthermore, the detachable design of the guide member 240 facilitates cleaning and maintenance of the system, reducing maintenance costs. The combined design of the guide groove 230 and the guide member 240 ensures that the conveyor belt 20 can smoothly enter the second channel 210, reducing the shaking and oscillation of the conveyor belt 20 in the redundant section 22, thereby improving the reliability and effectiveness of the entire conveyor system.

[0075] According to an optional embodiment, the guide groove 230, located on the side of the guide member 240 away from the second roller 400, is flared along the first axis. In other words, the guide groove 230 is flared across the width of the conveyor belt 20. This design effectively guides the conveyor belt 20 into the guide groove 230, preventing it from getting stuck or deviating when entering the guide groove 230.

[0076] The flared design of the guide groove 230 provides a larger entrance space, allowing the conveyor belt 20 to smoothly enter the guide groove 230 even if there is slight sway or position deviation during transportation. This not only reduces friction and the probability of jamming between the conveyor belt 20 and the guide groove 230, but also improves the operating efficiency of the conveyor system, ensuring that the conveyor belt 20 can smoothly and securely enter the tensioning mechanism and smoothly complete the transition from the redundant section 22 to the tensioning section 21.

[0077] According to an alternative embodiment, referring to Figure 1 、 Figure 4The guide member 240 is provided with a contact portion 241, which protrudes from the surface of the guide groove 230 and is used to contact the surface of the conveyor belt 20 passing through the guide groove 230. The design of the contact portion 241 forms a protruding structure in the guide groove 230, so that when the conveyor belt 20 contacts the inner wall of the guide groove 230 when passing through the guide groove 230, it only makes partial contact at the contact portion 241, rather than forming a large-area contact with the inner wall of the guide groove 230.

[0078] This design reduces friction between the conveyor belt 20 and the guide groove 230 as it enters the guide groove 230. Due to the reduced contact area, wear between the conveyor belt 20 and the guide member 240 is significantly reduced, thereby extending the service life of the conveyor belt 20 and the guide member 240. Furthermore, the recessed area formed between the contact portion 241 and the inner wall of the guide groove 230 prevents direct contact with the conveyor belt 20, further optimizing friction distribution and ensuring smooth and stable operation of the conveyor belt 20.

[0079] According to an optional embodiment, the contact portion 241 is located on the side of the guide member 240 away from the second roller 400. This further reduces the contact area between the conveyor belt 20 and the inner wall of the guide groove 230. This layout effectively optimizes the contact relationship between the conveyor belt 20 and the guide groove 230, reduces friction, and improves the smoothness and durability of the system.

[0080] For example, the contact portion 241 can be located on the inner wall of the guide groove 230 corresponding to the width direction of the conveyor belt 20, or on the inner wall of the guide groove 230 corresponding to the plane of the conveyor belt 20. This means that the contact portion 241 can not only be used to reduce the friction between the edge of the conveyor belt 20 and the guide groove 230, but also be used to reduce the contact area between the surface of the conveyor belt 20 and the guide groove 230, thereby preventing the conveyor belt 20 from being subjected to unnecessary friction or wear during operation.

[0081] This design flexibility allows the optimal contact pattern to be selected based on the specific operating environment and requirements of the conveyor belt 20, ensuring the conveyor belt 20 maintains stability as it enters the guide groove 230 and passes through the tensioning mechanism, while minimizing friction and wear. Ultimately, this design extends the service life of the equipment, reduces maintenance costs, and improves the overall efficiency and reliability of the conveyor system.

[0082] The second aspect of this embodiment provides a detailed description of a double-helix circulating conveyor belt 20 device.

[0083] Reference Figure 5 、 Figure 6 A double spiral circulating conveyor belt 20 device includes a winding shaft 10 and a conveyor belt 20 connected end to end.

[0084] The conveyor belt 20 includes a tensioning section 21 and a redundant section 22. The tensioning section 21 is partially spirally wound on the winding shaft 10, and the redundant section 22 is spirally arranged and is in a relaxed state. The spiral direction of the redundant section 22 is opposite to the spiral direction of the conveyor belt 20 wound on the winding shaft 10. A tensioning mechanism in the above embodiment is provided at the junction of the tensioning section 21 and the redundant section 22. The conveyor belt 20 passes through the second channel 210 and the first channel 310 in sequence.

[0085] Because the tensioning section 21 is partially helically wound around the winding shaft 10, the winding method ensures that adjacent spiral turns of the conveyor belt 20 do not overlap in the width direction. Specifically, during the winding process, the conveyor belt 20 is gradually wound along the axial direction of the winding shaft 10, with each turn of the conveyor belt 20 arranged only adjacent to the adjacent turns in the width direction, without overlapping or overlapping each other. This non-overlapping winding method ensures a uniform spiral structure on the winding shaft 10, promoting a continuous and smooth winding process.

[0086] Because the conveyor belt 20 does not overlap in the width direction during its spiral winding, it experiences transmission problems during its circulation due to the inability of the layers of the conveyor belt 20 to connect naturally. To compensate for this problem, redundant segments 22 are provided. The counter-spiral design of these redundant segments 22 adjusts the widthwise alignment of the conveyor belt 20, ensuring smooth transmission of the conveyor belt 20 throughout the spiral structure of the winding shaft 10. This structural design not only ensures a smooth transition across the width of the conveyor belt 20, but also improves the material winding process, making the entire production process more continuous and efficient.

[0087] The purpose of providing the redundant section 22 is to adjust the arrangement of the endless conveyor belt 20, thereby ensuring smooth circulation of the conveyor belt 20. Within the redundant section 22, the conveyor belt 20 is in a relatively relaxed state, that is, it is not affected by the force of the tensioning mechanism, which helps to relieve the internal stress generated by the conveyor belt 20 during the continuous winding process.

[0088] The relaxed state of the redundant section 22 not only reduces the tension on the conveyor belt 20, but also prevents the conveyor belt 20 from fatigue or damage caused by excessive tension after multiple cycles of transmission. This design effectively extends the service life of the conveyor belt 20, while reducing friction and wear between the conveyor belt 20 and other components. In addition, the conversion section is set in the redundant section 22, so that the arrangement of the conveyor belt 20 can be smoothly adjusted during the circulation process, avoiding transmission obstacles caused by improper winding. This not only maintains the smooth transmission of the conveyor belt 20, but also optimizes the structural stress state during the entire winding process. Through this design, the redundant section 22 can not only effectively release the internal stress of the conveyor belt 20, but also improve the overall operating stability and production efficiency of the equipment, further extending the service life of the equipment and the conveyor belt 20.

[0089] Reference Figure 6 、 Figure 7 The tensioning mechanism, located at the junction of the tensioning section 21 and the redundant section 22, separates the two, ensuring that tensioned and relaxed states are independent and non-interfering. The conveyor belt 20 passes through the tensioning mechanism's second channel 210 and first channel 310, respectively. When the first and second rollers 300 and 400 clamp the conveyor belt 20, the tensioning mechanism isolates the tensioning section 21 from the redundant section 22.

[0090] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tensioning mechanism for clamping a conveyor belt (20), characterized in that: include: Frame (100); A movable frame (200) movably arranged on the frame body (100); A first roller (300) is rotatably mounted on the frame (100); a second roller (400) rotatably disposed on the movable frame (200), wherein the central axis of the second roller (400) is parallel to the central axis of the first roller (300); and an adjusting member (500), disposed on the frame (100), and used for driving the movable frame (200) to move relative to the frame (100), so as to increase or decrease the distance between the first roller (300) and the second roller (400); A first passage (310) for the conveyor belt (20) to pass through is formed between the first roller (300) and the second roller (400), and a second passage (210) for the conveyor belt (20) to pass through is formed between the second roller (400) and the movable frame (200).

2. A tensioning mechanism according to claim 1, characterized in that: The movable frame (200) is connected to the frame body (100) so as to rotate around a first axis, the first axis being parallel to the central axis of the first roller (300), and the adjusting member (500) is used to drive the movable frame (200) to rotate around the first axis. When the movable frame (200) rotates around the first axis, the second roller (400) can be brought into contact with the first roller (300); And / or, the diameter of the first roller (300) is greater than the diameter of the second roller (400).

3. A tensioning mechanism according to claim 2, characterized in that: The central axis of the first roller (300) and the central axis of the second roller (400) are located in a first plane, and the projection of the first axis on the first plane is parallel to the central axis of the second roller (400).

4. The tensioning mechanism according to claim 1, characterized in that: The adjusting member (500) comprises an adjusting bolt (510), the adjusting bolt (510) is threadedly engaged with the frame body (100), and the end of the adjusting bolt (510) abuts against the movable frame (200); When the adjusting bolt (510) is rotated, the movable frame (200) can be pushed to rotate relative to the frame body (100), so that the distance between the first roller (300) and the second roller (400) increases or decreases.

5. A tensioning mechanism according to claim 4, characterized in that: The movable frame (200) is provided with a matching portion (220), and the end of the adjusting bolt (510) abuts against the matching portion (220); And / or, the contact end of the adjusting bolt (510) and the movable frame (200) is configured as a spherical surface (511).

6. The tensioning mechanism according to claim 2, characterized in that: The movable frame (200) is provided with a guide groove (230) to guide the conveyor belt (20) into the second channel (210).

7. The tensioning mechanism according to claim 6, characterized in that: The movable frame (200) is detachably provided with a guide member (240), at least a portion of the guide groove (230) is located on the guide member (240), and the guide member (240) is located on the side of the second roller (400) facing away from the first roller (300).

8. The tensioning mechanism according to claim 7, characterized in that: The guide groove (230) located on the side of the guide member (240) away from the second roller (400) is arranged to be expanded along the first axis direction; And / or, the guide member (240) is provided with a contact portion (241), the contact portion (241) protruding from the surface of the guide groove (230), and the contact portion (241) is used to contact the surface of the conveyor belt (20) passing through the guide groove (230).

9. The tensioning mechanism according to claim 8, characterized in that: The contact portion (241) is located on a side of the guide member (240) away from the second roller (400).

10. A double spiral circulating conveyor belt device, characterized in that: It includes a winding reel (10) and a conveyor belt (20) connected end to end; The conveyor belt (20) includes a tensioning section (21) and a redundant section (22), wherein the tensioning section (21) is partially spirally wound on the winding shaft (10), and the redundant section (22) is spirally arranged and is in a relaxed state, and the spiral direction of the redundant section (22) is opposite to the spiral direction of the conveyor belt (20) wound on the winding shaft (10), and a tensioning mechanism according to any one of claims 1 to 9 is provided at the junction of the tensioning section (21) and the redundant section (22), and the conveyor belt (20) passes through the second channel (210) and the first channel (310) in sequence.

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