Tensioning structure and drum motor

Abstract

This application relates to the field of conveying equipment technology, and proposes a tensioning structure and a roller motor. The tensioning structure is used to connect a driving component and a rotating component. Under the drive of the driving component, the tensioning structure can drive the rotating component to rotate around a rotation axis. The tensioning structure includes: a first connecting component, which is connected to the driving component; a limiting component, including a bottom wall and a side wall provided along the periphery of the bottom wall, with an installation groove on the side wall, and the bottom wall is detachably connected to the first connecting component so that the side wall can be sleeved on the first connecting component; and a tensioning component, which engages with the installation groove, with the side of the tensioning component opposite to the first connecting component protruding from the installation groove and abutting against the rotating component. In the above-mentioned tensioning structure, a reliable frictional force is generated between the tensioning component and the rotating component to achieve a fixed connection, thereby driving the rotating component to rotate around the rotation axis. This connection method has low requirements for the shape of the tensioning structure, reduces the requirements for processing accuracy, and solves the technical problems of existing roller and sleeve connection methods that have high processing accuracy requirements and complex disassembly and assembly.

Description

Technical Field

[0001] This application relates to the field of conveying equipment technology, and in particular to a tensioning structure and a roller motor. Background Technology

[0002] Roller motors are often used in various heavy object conveying scenarios. Due to the special nature of their use, they need to withstand large torque, which places high demands on the connection strength between the power output part of the drive unit and the roller.

[0003] Existing technologies often employ an interference fit between the roller and a motor-driven sleeve. This involves using a tooling to press in a sleeve with a diameter slightly larger than the roller's inner diameter, generating radial pressure. When the sleeve or roller is subjected to external force, it generates significant friction, thus achieving a fixed connection between the roller and sleeve. However, this connection method requires high machining precision for both the sleeve and roller, necessitates the fabrication of corresponding tooling, results in high costs, and is complex to assemble and disassemble. Summary of the Invention

[0004] The purpose of this application is to provide a tensioning structure and a roller motor to solve the technical problems of high machining accuracy requirements and complex disassembly and assembly in the existing roller motor connection method between the roller and the sleeve.

[0005] An embodiment of the first aspect of this application provides a tensioning structure for connecting a driving member and a rotating member. The tensioning structure can drive the rotating member to rotate about a rotation axis under the drive of the driving member. The tensioning structure includes:

[0006] The first connecting member is drively connected to the driving member;

[0007] The limiting member includes a bottom wall and a side wall provided along the periphery of the bottom wall. The side wall has an installation groove. The bottom wall is detachably connected to the first connector so that the side wall can be sleeved on the first connector.

[0008] The tensioning member engages with the mounting groove, and the side of the tensioning member opposite to the first connecting member protrudes from the mounting groove and can abut against the rotating member.

[0009] In one embodiment, the length of the mounting groove is less than the length of the tensioning member along the rotation axis.

[0010] In one embodiment, the tensioning member has a textured surface with interlocking grooves on the side opposite to the first connecting member.

[0011] In one embodiment, the sidewall includes a plurality of spaced protrusions, each of the protrusions having a groove on one side facing the adjacent protrusion, and any one of the grooves and the opposite groove forming a mounting groove having a mounting opening;

[0012] The tensioning member includes limiting protrusions spaced apart on both sides, the limiting protrusions engaging with the corresponding grooves, and the tensioning member being movably inserted into the mounting groove via the mounting port.

[0013] In one embodiment, along the rotation axis, the first connector includes a first segment and a second segment connected together, the diameter of the first segment being smaller than the diameter of the second segment, and a stepped surface being formed at the connection between the first segment and the second segment;

[0014] The sidewall is fitted onto the first section, and the end of the sidewall away from the bottom wall abuts against the step surface.

[0015] In one embodiment, the first connector further includes a mating portion protruding from the outer side wall of the first segment, the mating portion including a first mating inclined surface;

[0016] The tensioning member is slidably connected to the mating part. The tensioning member includes a second mating inclined surface. The extension direction of the second mating inclined surface is inclined to the sliding direction of the tensioning member. The second mating inclined surface is parallel to and fits against the first mating inclined surface.

[0017] In one embodiment, both the first segment and the second segment are provided with receiving cavities, and the first connector further includes a connecting portion disposed within the receiving cavity; a through hole is provided on the bottom wall;

[0018] The tensioning structure also includes fasteners, which pass through the through hole and are connected to the connecting portion.

[0019] In one embodiment, the tensioning structure further includes an elastic element and a second connecting element housed within the receiving cavity. The elastic element is sleeved on the second connecting element and engages with the second segment. The second connecting element is used to connect the output shaft of the drive element.

[0020] The aforementioned tensioning structure includes a first connecting member, a limiting member, and a tensioning member. The first connecting member is driven to the driving member and rotates around the rotation axis. The bottom wall of the limiting member is detachably connected to the first connecting member. The tensioning member engages with the mounting groove on the side wall of the limiting member. Thus, both the tensioning member and the limiting member can rotate around the rotation axis with the first connecting member, and the assembly and disassembly of the tensioning member and the limiting member are simple. Furthermore, since the side of the tensioning member opposite to the first connecting member protrudes from the mounting groove and can abut against the rotating member, a reliable frictional force can be generated between the tensioning member and the rotating member to achieve a fixed connection, thereby driving the rotating member to rotate around the rotation axis. This connection method has low requirements for the shape of the tensioning structure, thereby reducing the machining accuracy requirements and solving the technical problem of high machining accuracy requirements and complex assembly and disassembly in the existing roller motor connection method between the roller and the sleeve.

[0021] An embodiment of the second aspect of this application provides a drum motor including a tensioning structure as described in any embodiment of the first aspect.

[0022] In one embodiment, the rotating component is a roller, and the roller has a receiving cavity inside;

[0023] The roller motor also includes a drive component and a transmission component. The drive component, the transmission component, and the tensioning structure are all housed in the receiving cavity and connected in sequence. The tensioning element of the tensioning structure abuts against the inner sidewall of the roller.

[0024] The aforementioned roller motor achieves a fixed connection through the frictional force generated between the tensioning structure and the rotating component, thereby driving the rotating component to rotate around the axis of rotation. This connection method has low requirements for the shape of the tensioning structure, thus reducing the machining accuracy requirements and solving the technical problems of high machining accuracy and complex disassembly / assembly of the connection method between the roller and the sleeve in existing roller motors. In addition, the number of tensioning components and mating parts can be increased or decreased to meet different frictional force requirements, thereby improving applicability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the drum motor provided in an embodiment of this application;

[0027] Figure 2 yes Figure 1 The diagram shown is an exploded view of the drum motor.

[0028] Figure 3 yes Figure 1 The diagram shows the internal structure of the drum motor.

[0029] Figure 4 yes Figure 2 An exploded three-dimensional schematic diagram of the tensioning structure in the drum motor shown;

[0030] Figure 5 yes Figure 4 A three-dimensional exploded view of the tensioning structure from another angle;

[0031] Figure 6 yes Figure 4 A three-dimensional schematic diagram of the tensioning element in the tensioning structure shown;

[0032] Figure 7 yes Figure 2An exploded three-dimensional diagram of the transmission and drive components in the drum motor shown.

[0033] Figure 8 yes Figure 2 An exploded three-dimensional view of the drive component fixing mechanism and the motor internal gear housing in the drum motor shown.

[0034] Figure 9 yes Figure 8 The diagram shows an exploded perspective view of the drive component fixing mechanism and the motor internal gear housing from another angle.

[0035] The markings in the diagram mean:

[0036] 100. Drum motor;

[0037] 10. Tensioning structure; 11. First connecting member; 111. First section; 112. Second section; 113. Stepped surface; 114. Mating part; 1141. First mating slope; 115. Receiving cavity; 116. Connecting part; 12. Limiting member; 121. Bottom wall; 122. Side wall; 1221. Protruding post; 123. Mounting groove; 124. Mounting opening; 13. Tensioning member; 131. Limiting protrusion; 132. Second mating slope; 14. Fastener; 15. Elastic member; 16. Second connecting member;

[0038] 20. Drive components; 21. Motor internal gear housing;

[0039] 30. Rotating component; 31. Receiving cavity;

[0040] 40. Transmission component; 41. Housing; 42. Reduction component; 421. Sun gear; 422. Planetary gear; 423. Planetary gear support; 424. Optical shaft; 425. Rolling element; 43. Output shaft; 44. First bearing; 45. Annular spring;

[0041] 50. Drive component fixing mechanism; 51. Motor fixing component; 52. Motor connecting component; 53. Motor connecting mating component;

[0042] 60. Roller support mechanism; 61. Fixing component; 62. Connecting sleeve; 63. Second bearing. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0045] It should be understood that the terms "length," "width," "upper," "lower," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] An embodiment of the first aspect of this application provides a tensioning structure for connecting a driving member and a rotating member, thereby providing a driving force for the rotation of the rotating member through the driving member.

[0048] Please refer to Figures 1 to 4 In one embodiment of this application, the tensioning structure 10 can drive the rotating member 30 to rotate around the rotation axis L under the drive of the driving member 20, wherein the rotation axis L overlaps with the central axis of the rotating member 30, and the tensioning structure 10 includes a first connecting member 11, a limiting member 12 and a tensioning member 13.

[0049] The first connecting member 11 is driven to the driving member 20. Specifically, the first connecting member 11 is driven to the output end of the driving member 20. Since the output end of the driving member 20 rotates around the rotation axis L, it drives the first connecting member 11 to rotate around the rotation axis L as well.

[0050] The limiting member 12 includes a bottom wall 121 and a side wall 122 provided along the periphery of the bottom wall 121. The side wall 122 is provided with an installation groove 123. The bottom wall 121 is detachably connected to the first connector 11 so that the side wall 122 can be sleeved on the first connector 11.

[0051] The tensioning member 13 engages with the mounting groove 123, and the side of the tensioning member 13 facing away from the first connecting member 11 protrudes from the mounting groove 123 and can abut against the rotating member 30. That is to say, the tensioning member 13 protrudes from the mounting groove 123 in a direction perpendicular to the rotation axis L.

[0052] Specifically, the bottom wall 121 of the limiting member 12 can be connected to the first connecting member 11 via a snap-fit ​​connection or a threaded connection, making disassembly and assembly convenient. The limiting member 12 can rotate around the rotation axis L with the first connecting member 11. Since the tensioning member 13 engages with the mounting groove 123 on the side wall 122, when the side wall 122 of the limiting member 12 is fitted onto the first connecting member 11, the tensioning member 13 rotates around the rotation axis L with the first connecting member 11. Furthermore, since the side of the tensioning member 13 facing away from the first connecting member 11 protrudes from the mounting groove 123 and can abut against the rotating member 30, the tensioning member 13 is fixedly connected to the rotating member 30. The tensioning structure 10 simultaneously transmits power and provides support for the drive transmission member 40; that is, the rotating member 30 is driven by the tensioning structure 10 and rotates around the rotation axis L.

[0053] It is understandable that a reliable frictional force is generated between the tensioning member 13 and the rotating member 30 to achieve a fixed connection.

[0054] In this embodiment, the rotating member 30 is a roller. It can be understood that in other embodiments of this application, the rotating member 30 may also be a belt or other structure wound around the tensioning structure 10.

[0055] The tensioning structure 10 includes a first connecting member 11, a limiting member 12, and a tensioning member 13. The first connecting member 11 is tractively connected to the driving member 20 and rotates around the rotation axis L. The bottom wall 121 of the limiting member 12 is detachably connected to the first connecting member 11. The tensioning member 13 engages with the mounting groove 123 on the side wall 122 of the limiting member 12. Thus, both the tensioning member 13 and the limiting member 12 can rotate around the rotation axis L with the first connecting member 11, and the tensioning member 13 and the limiting member 12 are easy to assemble and disassemble. Furthermore, since the tensioning member 13 protrudes from the mounting groove 123 on the side opposite to the first connecting member 11 and can abut against the rotating member 30, the tensioning member 13 can generate reliable friction with the rotating member 30 and achieve a fixed connection, thereby driving the rotating member 30 to rotate around the rotation axis L. This connection method has low requirements for the shape of the tensioning structure 10, thereby reducing the processing accuracy requirements and solving the technical problem that the connection method between the roller and the sleeve in the existing roller motor has high processing accuracy requirements and complex disassembly and assembly.

[0056] Please refer to Figure 1 , Figures 3 to 5In one embodiment of this application, the length of the mounting groove 123 along the rotation axis L is less than the length of the tensioner 13. Thus, when the tensioner 13 is placed in the mounting groove 123, the tensioner 13 is compressed and the radial pressure on the rotating member 30 is increased, ensuring the stability of the connection between the tensioner 13 and the rotating member 30.

[0057] It is understood that in other embodiments of this application, the length of the mounting groove 123 along the rotation axis L can also be the same as the length of the tensioner 13, and the radial pressure on the rotating member 30 can be increased by increasing the roughness of the tensioner 13 on the side facing the rotating member 30, which is not limited here.

[0058] To provide a stable friction effect, please refer to Figure 3 and Figure 4 In one embodiment of this application, the tensioning member 13 has interlocking textures on the side facing away from the first connecting member 11. That is, the side of the tensioning member 13 facing away from the first connecting member 11 is a rough surface. Since the interlocking textures can increase the roughness of the surface of the tensioning member 13, thereby increasing the radial pressure of the tensioning member 13 on the rotating member 30, and improving the stability of the connection between the tensioning structure 10 and the rotating member 30.

[0059] In this embodiment, the tensioning element 13 is made of a metallic material, which has high mechanical strength and is not easily deformed during long-term extrusion, ensuring a stable connection. It is understood that in other embodiments of this application, the tensioning element 13 may also be made of a ceramic material, such as zirconia ceramic; or, the tensioning element 13 may also be a metal-based composite material, and no limitation is made herein.

[0060] Furthermore, the sidewall 122 has multiple mounting slots 123, which are evenly distributed circumferentially along the sidewall 122. Correspondingly, the tensioning element 13 has multiple components and is placed in the corresponding mounting slot 123.

[0061] It is understood that in other embodiments of this application, the number of tensioning members 13 may also be different, and the number of tensioning members 13 may be increased or decreased according to the friction requirements. Alternatively, in yet another embodiment of this application, the structure of the tensioning member 13 may also be different. For example, the tensioning member 13 may be entirely annular, and correspondingly, the mounting groove 123 is arranged around the outer peripheral surface of the first connecting member 11. In this case, the radial pressure of the tensioning member 13 on the rotating member 30 can be changed by replacing the tensioning member 13 with different ring widths. Accordingly, in order to ensure the stability of the connection between the tensioning member 13 and the first connecting member 11, when replacing the tensioning member 13 with different ring widths, the first connecting member 11 with the corresponding mounting groove 123 size needs to be replaced, but it is not limited to this.

[0062] Please refer to Figures 3 to 5In one embodiment of this application, the sidewall 122 includes a plurality of spaced-apart protrusions 1221. Each protrusion 1221 has a groove on one side facing the adjacent protrusion 1221. Any groove and the opposite groove form a mounting groove 123 with a mounting opening 124. The tensioning member 13 includes limiting protrusions 131 spaced apart on both sides. The limiting protrusions 131 engage with the corresponding grooves, and the tensioning member 13 can be movably inserted into the mounting groove 123 through the mounting opening 124. In this way, the groove can guide and limit the installation of the limiting protrusions 131 housed therein, thereby increasing the stability of the connection between the tensioning member 13 and the limiting member 12, reducing the risk of the tensioning member 13 falling off, and making disassembly and assembly simple.

[0063] It is understandable that the tensioning member 13 should be installed before the limiting member 12 and the first connecting member 11 are assembled.

[0064] It is understood that in other embodiments of this application, the structure of the limiting member 12 may also be different. For example, the groove shape of each protrusion 1221 facing different adjacent protrusions 1221 is different. Correspondingly, the shapes of the opposite sides of the tensioning member 13 are also different. In this way, the installation direction of the tensioning member 13 can be limited, and the frictional resistance between the tensioning member 13 and the limiting member 12 can be increased, making it less likely to fall off.

[0065] Please refer to Figures 3 to 5 In one embodiment of this application, along the rotation axis L, the first connecting member 11 includes a first segment 111 and a second segment 112 connected together. The diameter of the first segment 111 is smaller than the diameter of the second segment 112, and a stepped surface 113 is formed at the connection between the first segment 111 and the second segment 112. A side wall 122 is sleeved on the first segment 111, and the end of the side wall 122 away from the bottom wall 121 abuts against the stepped surface 113. Thus, when assembling the limiting member 12 and the first connecting member 11, the stepped surface 113 can limit the installation of the limiting member 12, preventing the connection between the limiting member 12 and the first connecting member 11 from being too tight or not properly connected, thereby ensuring that the frictional resistance between the tensioning member 13 and the rotating member 30 is appropriate.

[0066] In this embodiment, please refer to Figures 3 to 6 The first connecting member 11 further includes a mating portion 114 protruding from the outer wall of the first segment 111, the mating portion 114 including a first mating inclined surface 1141. The tensioning member 13 is slidably connected to the mating portion 114, and the tensioning member 13 includes a second mating inclined surface 132. The extension direction of the second mating inclined surface 132 is inclined to the sliding direction of the tensioning member 13, and the second mating inclined surface 132 is parallel to and fits against the first mating inclined surface 1141. That is to say, the extension direction of the first mating inclined surface 1141 is also inclined to the sliding direction of the tensioning member 13.

[0067] Thus, the second mating inclined surface 132 fits against the first mating inclined surface 1141. Under external force, the tensioning member 13 can slide slightly along the first mating inclined surface 1141 on the mating part 114. Since the first mating inclined surface 1141 is an inclined surface, the tensioning member 13 is compressed during its movement, increasing the pressure on the inner wall of the rotating member 30. The friction generated by the rough surface drives the rotating member 30 to rotate. In addition, multiple tensioning blocks and mating parts 114 can be axially arranged to provide a strong frictional force.

[0068] In this embodiment, the sliding direction of the tensioner 13 is parallel to the rotation axis L.

[0069] In this embodiment, the first connecting member 11 includes multiple mating portions 114, which are evenly distributed along the axial direction of the first segment 111 to accommodate multiple tensioning members 13. Thus, the tensioning members 13 are evenly distributed along the axial direction, resulting in a uniform radial pressure distribution of the tensioning structure 10 on the rotating member 30, and a stable connection between the first connecting member 11 and the rotating member 30. Furthermore, along the sliding direction of the tensioning member 13, the height of the mating portion 114 gradually increases from the end near the bottom wall 121 to the end near the second segment 112.

[0070] Furthermore, the limiting protrusion 131 of the tensioning member 13 and the second mating inclined surface 132 form a sliding groove, and the mating part 114 can be accommodated in the sliding groove. When installing the limiting member 12 and the tensioning member 13, the sliding connection between the mating part 114 and the sliding groove can achieve the guiding function and limit the tensioning member 13 to ensure accurate installation.

[0071] Please refer to Figures 1 to 5 In one embodiment of this application, both the first segment 111 and the second segment 112 are provided with receiving cavities 115, and the first connecting member 11 further includes a connecting portion 116 disposed within the receiving cavity 115; a through hole is provided on the bottom wall 121; the tensioning structure 10 further includes a fastener 14, which passes through the through hole and is connected to the connecting portion 116. Thus, the limiting member 12 can be fixed by the connection between the fastener 14 and the connecting portion 116, thereby achieving the fixation of the tensioning member 13.

[0072] In this embodiment, the length of the tensioning member 13 is slightly greater than the length of the mating part 114. The fastener 14 passes through the through hole and is threaded to the connecting part 116; the fastener includes a bolt and a nut. Thus, a simple connection structure can be achieved through the threaded connection between the bottom wall 121 and the connecting part 116, facilitating assembly and disassembly. During the installation of the tensioning structure 10, tightening the bolt and nut causes the bottom wall 121 to press against the tensioning member 13. Under the pressure of the bottom wall 121, the tensioning member 13 moves along the mating part 114 away from the first connecting member 11, i.e., moves vertically. Since the first mating inclined surface 1141 is an inclined surface, the tensioning member 13 is compressed during its horizontal movement, increasing the pressure on the rotating member 30. The friction generated by the rough surface drives the rotating member 30 to rotate.

[0073] In addition, the first section 111, the second section 112, the mating part 114, and the connecting part 116 are integrally molded, which is simple in process and easy to install, and convenient for timely replacement.

[0074] It is understood that in other embodiments of this application, the structure of the fastener 14 may also be different. For example, the fastener 14 may be fixed by means of snap-fit ​​connection, but it is not limited to this.

[0075] Please refer to Figures 2 to 5 In one embodiment of this application, the tensioning structure 10 further includes an elastic element 15 and a second connecting element 16 housed within a receiving cavity 115. The elastic element 15 is sleeved on the second connecting element 16 and engages with the second segment 112. The second connecting element 16 is used to connect the output end of the drive element 20. Thus, the elastic element 15 can act as a shock absorber, preventing external forces such as vibrations received by the first connecting element 11 from being transmitted to the second connecting element 16 and the output shaft 43.

[0076] In this embodiment, the second connector 16 and the elastic member 15, and the elastic member 15 and the second segment 112 are engaged by multiple concave and convex structures to keep the relative positions of the second connector 16, the elastic member 15, and the second segment 112 unchanged. Then, the driving member 20 connected to the second connector 16 can drive the first connector 11 to rotate around the rotation axis L.

[0077] Specifically, the elastic member 15 has an installation channel, and the outer surface of the second connector 16 is adapted to the shape of the installation channel. Multiple protrusions are provided on the outer surface of the elastic member 15, and multiple grooves adapted to the protrusions are provided on the inner wall of the second segment 112, so as to achieve a fixed connection between the elastic member 15 and the second segment 112 and restrict relative rotation between them. It is understood that in other embodiments of this application, the shapes of the second connector 16, the elastic member 15, and the inner wall of the second segment 112 may also be other, and are not limited here.

[0078] The tensioning structure 10 includes a first connecting member 11, a limiting member 12, and a tensioning member 13. The first connecting member 11 is tractively connected to the driving member 20 and rotates around the rotation axis L. The bottom wall 121 of the limiting member 12 is detachably connected to the first connecting member 11. The tensioning member 13 engages with the mounting groove 123 on the side wall 122 of the limiting member 12. Thus, both the tensioning member 13 and the limiting member 12 can rotate around the rotation axis L with the first connecting member 11, and the tensioning member 13 and the limiting member 12 are easy to assemble and disassemble. Furthermore, since the tensioning member 13 protrudes from the mounting groove 123 on the side opposite to the first connecting member 11 and can abut against the rotating member 30, a reliable frictional force can be generated between the tensioning member 13 and the rotating member 30, achieving a fixed connection. This causes the rotating member 30 to rotate around the rotation axis L. This connection method has low requirements for the shape of the tensioning structure 10, thereby reducing the machining accuracy requirements and solving the technical problem of high machining accuracy requirements and complex disassembly and assembly in the existing roller motor connection method between the roller and the sleeve. In addition, the number of tensioning members 13 and mating parts 114 can be increased or decreased to meet different frictional force requirements, improving applicability.

[0079] An embodiment of the second aspect of this application provides a drum motor including a tensioning structure as described in any embodiment of the first aspect.

[0080] Please refer to Figures 1 to 3 In one embodiment of this application, the rotating component 30 is a roller, and the roller has a receiving cavity 31. The roller motor 100 also includes a driving component 20 and a transmission component 40. The driving component 20, the transmission component 40 and the tensioning structure 10 are all housed in the receiving cavity 31 and connected in sequence. The tensioning member 13 of the tensioning structure 10 abuts against the inner sidewall of the roller, so the tensioning structure 10 can drive the roller to rotate under the drive of the driving component 20.

[0081] It is understood that neither the drive component 20 nor the transmission component 40 has direct contact with the roller. When the drive component 20, the transmission component 40 and the tensioning structure 10 are all housed in the receiving cavity 31, the space occupied by the roller motor 100 can be saved.

[0082] Among them, transmission component 40 is a planetary gearbox, please refer to... Figure 2 , Figure 3 and Figure 7 The transmission component 40 includes a housing 41 with an internal gear ring, a reduction component 42 located within the housing 41, and an output shaft 43. The reduction component 42 includes a sun gear 421 fixedly connected to the output end of the drive component 20, a plurality of planetary gears 422 disposed around the sun gear 421, and a planetary gear carrier 423. Each planetary gear 422 meshes with the sun gear 421 and the internal gear ring, and all planetary gears 422 are rotatably connected to the planetary gear carrier 423. The output shaft 43 is located on the side of the planetary gear carrier 423 opposite to the drive component 20 and can rotate synchronously with the planetary gear carrier 423.

[0083] Specifically, multiple optical shafts 424 are mounted on the planetary gear carrier 423, and each planetary gear 422 is fitted onto the corresponding optical shaft 424. To improve the power transmission efficiency of the transmission component 40, a rolling element 425, such as a needle roller bearing or a ball bearing, is embedded between the inner wall of the planetary gear 422 and the optical shaft 424. This transforms the sliding friction between the planetary gear 422 and the optical shaft 424 during rotation into rolling friction, greatly increasing power transmission efficiency, reducing friction noise, and extending the gearbox life.

[0084] In addition, the transmission component 40 also includes a first bearing 44 sleeved on the output shaft 43. The inner ring of the first bearing 44 is provided with a limiting groove, and an annular spring ring 45 is provided in the limiting groove. The annular spring ring 45 can be sleeved on the output shaft 43 and plays the role of radial backlash elimination.

[0085] It is understood that in other embodiments of this application, the limiting groove may also be provided on the output shaft 43, and there is no limitation here.

[0086] In this embodiment, please refer to Figure 2 , Figure 3 , Figure 8 and Figure 9 The drum motor 100 also includes a drive component fixing mechanism 50 and a rotating component support mechanism 60. The drive component fixing mechanism 50 is located at the first end of the rotating component 30 and extends partially outside the receiving cavity 31. The drive component fixing mechanism 50 is used to fix and support the end of the drive component 20 away from the transmission component 40. The rotating component support mechanism 60 is located at the second end of the rotating component 30 and extends partially outside the receiving cavity 31. The rotating component support mechanism 60 is used to support the rotating component 30.

[0087] Specifically, the driving component 20 is a motor, including a motor internal gear housing 21. The driving component fixing mechanism 50 includes a motor fixing component 51, a motor connecting component 52, and a motor connecting mating component 53. The motor fixing component 51 is hexagonal, and the motor connecting component 52 has a certain degree of slight deformation capability. The motor fixing component 51 and the motor connecting component 52 are interference-fitted and flat-connected to ensure that the motor connecting component 52 cannot rotate. The motor connecting component 52 and the motor connecting mating component 53 are fixed together by multiple convex and concave structures. The motor connecting component 52 has a certain elasticity, which can offset some of the external force from the motor fixing component 51, thereby preventing the motor fixing component 51 from being subjected to vibration or other external forces that are transmitted to the motor, thus achieving a shock absorption effect. Furthermore, the motor connecting mating component 53 is splinedly connected to the motor internal gear housing 21, ensuring that the motor itself is fixed by the motor fixing component 51 and cannot rotate, avoiding direct contact between the driving component 20 and the roller.

[0088] Furthermore, the rotating component support mechanism 60 includes a fixing member 61, a connecting sleeve 62, and a second bearing 63. The connecting sleeve 62 is partially located within the receiving cavity 31 and is interference-fitted with the roller, enabling a fixed connection between the connecting sleeve 62 and the roller. Thus, the connecting sleeve 62 and the roller can rotate synchronously. The fixing member 61 and the second bearing 63, sleeved on the fixing member 61, primarily serve to support the roller. In practical applications, a roller with motor output power is typically used to connect multiple unpowered sleeves to achieve a reasonable distribution of power. For example, when the roller rotates around the rotation axis L, since the connecting sleeve 62 is fixedly connected to the roller, the connecting sleeve 62 will be driven and start rotating synchronously. By attaching a belt or other connecting component to the end of the connecting sleeve 62 furthest from the roller, the unpowered sleeves can be driven to rotate synchronously, thereby achieving the conveying of objects.

[0089] The principle of the aforementioned roller motor 100 is as follows: The driving component 20 is fixed and supported at one end through a fixing structure. When the driving component 20 outputs power, the power is transmitted to the transmission component 40, and the output shaft 43 of the transmission component 40 drives the tensioning structure 10 to rotate. Due to the installation structure design of the limiting component 12 and the tensioning component 13, sufficient friction can be generated between the tensioning component 13 and the inner wall of the roller, thus enabling the tensioning structure 10 to drive the roller to rotate. A roller support structure is designed at the other end of the roller and connected to a non-powered roller to achieve power transmission to multiple non-powered rollers.

[0090] It is understandable that the tensioning structure 10 and the driving component 20 are used to fix the structure to support both sides of the driving component 20 and the transmission component 40, that is, to support both sides of the motor and the planetary gearbox. The installation is convenient. When there are different motor and transmission ratio requirements, or when the length requirements of the motor and the planetary gearbox change, it is only necessary to loosen the bolts of the tensioning structure 10 and adjust its position to adapt to the installation requirements of motors and planetary gearboxes of various lengths.

[0091] The aforementioned roller motor 100 achieves a fixed connection through the frictional force generated between the tensioning structure 10 and the rotating component 30, thereby driving the rotating component 30 to rotate around the rotation axis L. This connection method has low requirements for the shape of the tensioning structure 10, thus reducing the machining accuracy requirements and solving the technical problems of high machining accuracy requirements and complex disassembly and assembly in the existing roller motor connection method between the roller and the sleeve. In addition, the number of tensioning components 13 and mating parts 114 can be increased or decreased to meet different frictional force requirements, thereby improving applicability.

[0092] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A tensioning structure for connecting a driving component and a rotating component, wherein the tensioning structure can drive the rotating component to rotate about a rotation axis under the drive of the driving component, characterized in that, The tensioning structure includes: The first connecting member is drively connected to the driving member; The limiting member includes a bottom wall and a side wall provided along the periphery of the bottom wall. The side wall has an installation groove. The bottom wall is detachably connected to the first connector so that the side wall can be sleeved on the first connector. The tensioning member engages with the mounting groove, and the side of the tensioning member opposite to the first connecting member protrudes from the mounting groove and can abut against the rotating member; The sidewall includes a plurality of spaced protrusions, each of which has a groove on one side facing the adjacent protrusion, and any groove and the opposite groove form a mounting groove having a mounting opening; The tensioning member includes limiting protrusions spaced apart on both sides, the limiting protrusions engaging with the corresponding grooves, and the tensioning member being movably inserted into the mounting groove via the mounting port; Along the rotation axis, the first connector includes a first segment and a second segment connected together, the diameter of the first segment is smaller than the diameter of the second segment, and a stepped surface is formed at the connection between the first segment and the second segment; The sidewall is fitted onto the first section, and the end of the sidewall away from the bottom wall abuts against the step surface; The first connector further includes a mating portion protruding from the outer side wall of the first section, the mating portion including a first mating inclined surface; The tensioning member is slidably connected to the mating part. The tensioning member includes a second mating inclined surface. The extension direction of the second mating inclined surface is inclined to the sliding direction of the tensioning member. The second mating inclined surface is parallel to and fits against the first mating inclined surface.

2. The tensioning structure according to claim 1, characterized in that, Along the rotation axis, the length of the mounting groove is less than the length of the tensioning member.

3. The tensioning structure according to claim 1, characterized in that, The tensioning member has a textured surface with interlocking grooves on the side opposite to the first connecting member.

4. The tensioning structure according to claim 1, characterized in that, Both the first segment and the second segment are provided with receiving cavities, and the first connector also includes a connecting part disposed in the receiving cavity; a through hole is provided on the bottom wall; The tensioning structure also includes fasteners, which pass through the through hole and are connected to the connecting portion.

5. The tensioning structure according to claim 4, characterized in that, The tensioning structure further includes an elastic element and a second connecting element housed within the receiving cavity. The elastic element is sleeved on the second connecting element and engages with the second segment. The second connecting element is used to connect the output shaft of the drive element.

6. A drum motor, characterized in that, Includes the tensioning structure as described in any one of claims 1-5.

7. The drum motor according to claim 6, characterized in that, The rotating component is a roller, and the roller has a receiving cavity inside; The roller motor also includes a drive component and a transmission component. The drive component, the transmission component, and the tensioning structure are all housed in the receiving cavity and connected in sequence. The tensioning element of the tensioning structure abuts against the inner sidewall of the roller.

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