Drum motor

Abstract

The application relates to the technical field of conveying devices, and discloses a roller motor, which comprises a roller and a driving piece, the driving piece is used for driving the roller to rotate, and the roller motor further comprises: a first detection assembly, which comprises a first magnet and a first Hall element, the first magnet is fixedly connected to the rear end of an output shaft of the driving piece, the roller is fixedly connected to the front end of the output shaft of the driving piece, and the first Hall element is used for sensing the magnetic field change of the first magnet to detect the rotating speed of the output shaft; and a second detection assembly, which comprises a second magnet and a second Hall element, the second magnet is fixedly connected to the roller, and the second Hall element is used for sensing the magnetic field change of the second magnet to detect the rotating speed of the roller. The roller motor can detect the rotating speeds of the driving piece and the roller simultaneously, and the control precision of the rotating speed of the roller can be improved in combination with a control mechanism.

Description

Technical Field

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

[0002] Roller motors are commonly used in various heavy-load conveying applications, driving the roller to rotate. Existing roller motors often use a Hall effect PCB board to measure the motor output shaft speed and interpret this speed as the roller's rotational speed. The Hall effect PCB board transmits this data to the control circuit, further controlling the motor speed and thus achieving controllable roller speed. However, because the motor output shaft speed and the roller speed are not perfectly synchronized, the control accuracy of the roller speed is low. Summary of the Invention

[0003] In view of this, this application provides a roller motor to solve the problem of low roller speed control accuracy in the prior art.

[0004] Embodiments of this application provide a roller motor, including a roller and a drive component connected to each other, the drive component being used to drive the roller to rotate, and the roller motor further including:

[0005] The first detection component includes a first magnet and a first Hall element. The first magnet is fixedly connected to the rear end of the output shaft of the drive component, and the roller is fixedly connected to the front end of the output shaft of the drive component. The first Hall element is used to sense the change in the magnetic field of the first magnet to detect the rotational speed of the output shaft.

[0006] The second detection component includes a second magnet and a second Hall element. The second magnet is fixedly connected to the roller, and the second Hall element is used to sense changes in the magnetic field of the second magnet to detect the rotational speed of the roller.

[0007] In one embodiment, the drum motor further includes a control mechanism electrically connected to the first Hall element, the second Hall element, and the drive member, respectively. The control mechanism is used to receive detection signals emitted by the first Hall element and the second Hall element, and to control the rotational speed of the drive member.

[0008] In one embodiment, the roller has a receiving cavity, and the drive component, the first detection component, and the second detection component are all housed within the receiving cavity.

[0009] In one embodiment, the drum motor further includes;

[0010] A drive component fixing mechanism is fixedly connected to one end of the drive component and extends at least partially outside the receiving cavity. The drive component fixing mechanism is used to fix the drive component so that the drive component is spaced apart from the roller.

[0011] A roller support mechanism is located at the end of the roller away from the drive member fixing mechanism and extends partially outside the receiving cavity. The roller support mechanism is used to support the roller.

[0012] In one embodiment, the driving component includes a driving housing and a driving body, the driving housing having a receiving space, and the driving body including the output shaft;

[0013] The drive component fixing mechanism includes a support member and a connector that are fixedly connected. The support member extends outside the receiving cavity, and the connector is received within the receiving space. The connector and the drive housing have a rounded transition fit. The first Hall element is disposed on the side of the connector facing the output shaft.

[0014] In one embodiment, the drum motor further includes a positioning member fixedly connected to the connector, and the first Hall element is fixedly connected to the positioning member.

[0015] In one embodiment, the second magnet is a ring magnet, and both the second Hall element and the second magnet are sleeved on the support member. The second Hall element is spaced apart from the roller, and the second magnet is fixedly connected to the inner wall of the roller.

[0016] In one embodiment, the drum motor further includes an end cap, which is partially embedded in the drum and fixedly connected to the drum. The end cap has an installation channel, the support member passes through the installation channel and extends to the outside of the receiving cavity, and the second magnet is fixedly installed in the installation channel.

[0017] In one embodiment, the end cap includes a stop portion disposed within the mounting channel, and the side of the second magnet opposite to the second Hall element abuts against the stop portion.

[0018] In one embodiment, the second magnet is a block magnet, which is fixedly mounted on a mounting ring. The second Hall element and the mounting ring are both sleeved on the support member. The second Hall element is spaced apart from the roller, and the mounting ring is fixedly connected to the inner wall of the roller.

[0019] The aforementioned roller motor includes a roller and a drive component, a first detection component, and a second detection component. The first detection component includes a first Hall element and a first magnet fixedly connected to the rear end of the output shaft of the drive component. When the first magnet rotates with the output shaft of the drive component, the first Hall element can detect the rotational speed of the first magnet and the output shaft based on the change in the magnetic field of the first magnet. The second detection component includes a second Hall element and a second magnet fixedly connected to the roller. When the second magnet rotates with the roller, the second Hall element can detect the rotational speed of the second magnet and the roller based on the change in the magnetic field of the second magnet. This allows for real-time detection of the moving distance accuracy of the material box during roller transmission, improving control accuracy. In other words, the aforementioned roller motor can simultaneously detect the rotational speed of the drive component and the rotational speed of the roller. Combined with the control mechanism, this improves the control accuracy of the roller speed, solving the problem of low roller speed control accuracy in existing roller motors. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a three-dimensional schematic diagram of the drum motor provided in the embodiments of this application;

[0022] Figure 2 yes Figure 1 An exploded 3D view of the drum motor shown.

[0023] Figure 3 yes Figure 2 A three-dimensional schematic diagram of the drive component in the drum motor from another angle;

[0024] Figure 4 yes Figure 2 An exploded perspective view of the drive component, drive component fixing mechanism, first detection component, and second detection component in the drum motor shown.

[0025] Figure 5 yes Figure 4 An exploded three-dimensional view of the first Hall element, positioning element, and connecting element in the drum motor shown from another angle;

[0026] Figure 6 yes Figure 3 A three-dimensional schematic diagram of the positioning component in the drum motor shown;

[0027] Figure 7 yes Figure 1 The diagram shows a module schematic of the drum motor.

[0028] The markings in the diagram mean:

[0029] 100. Drum motor;

[0030] 10. Drum; 11. Receiving cavity;

[0031] 20. Drive component; 21. Output shaft; 22. Drive housing; 23. Drive body; 24. Connecting rod;

[0032] 31. First magnet; 32. First Hall element; 33. Fixing clip;

[0033] 41. Second magnet; 42. Second Hall element;

[0034] 51. Control mechanism; 52. Transmission mechanism; 53. Tensioning mechanism; 54. Drive component fixing mechanism; 541. Support component; 542. Connecting component; 55. Roller support mechanism; 56. Positioning component; 561. Positioning ring; 562. Extension rod; 563. Protrusion; 564. Connecting hole; 565. Protruding column;

[0035] 60. End cap; 61. Stop; 62. First body; 63. Second body. Detailed Implementation

[0036] 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.

[0037] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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 of this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] 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.

[0040] To illustrate the technical solutions described in this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0041] The embodiments of this application propose a roller motor that can detect the rotational speed of the drive component and the roller in real time to achieve closed-loop control.

[0042] Please refer to Figures 1 to 4 In one embodiment of this application, the roller motor 100 includes a roller 10 and a drive component 20 connected together, a first detection component and a second detection component. The drive component 20 is used to drive the roller 10 to rotate. The drive component 20 may be a DC motor, an asynchronous motor or a synchronous motor. The drive component 20 has an output shaft 21, which includes a front end and a rear end distributed along the axial direction.

[0043] The first detection component includes a first magnet 31 and a first Hall element 32. The first magnet 31 is fixedly connected to the rear end of the output shaft 21 of the drive component 20. Thus, the first magnet 31 can rotate with the rotation of the output shaft 21 of the drive component 20, and the magnetic field distribution of the first magnet 31 will change. The roller 10 is fixedly connected to the front end of the output shaft 21 of the drive component 20. That is to say, the roller 10 and the first magnet 31 are respectively connected to the opposite ends of the output shaft 21. In this way, when assembling the roller motor 100, the connection between the roller 10 and the drive component 20 and the connection between the first magnet 31 and the drive component 20 are independent of each other and do not affect each other, which facilitates disassembly and assembly.

[0044] The second detection component includes a second magnet 41 and a second Hall element 42. The second magnet 41 is fixedly connected to the roller 10, so the second magnet 41 can rotate with the rotation of the roller 10, and the magnetic field distribution of the second magnet 41 will change.

[0045] Both the first Hall element 32 and the second Hall element 42 are solid-state electronic devices utilizing the Hall effect, which are sensitive to changes in magnetic fields and offer high precision. The first Hall element 32 is used to sense changes in the magnetic field of the first magnet 31 to detect the rotational speed of the output shaft 21; the second Hall element 42 is used to sense changes in the magnetic field of the second magnet 41 to detect the rotational speed of the roller 10. Since the roller 10 can be used to convey a material box in practical applications, when the second Hall element 42 is used to detect the rotational speed of the roller 10, it can also accurately detect the moving distance of the material box during the conveying process of the roller 10, thus improving control precision.

[0046] The aforementioned roller motor 100 includes a roller 10, a drive component 20, a first detection component, and a second detection component. The first detection component includes a first Hall element 32 and a first magnet 31 fixedly connected to the rear end of the output shaft 21 of the drive component 20. When the first magnet 31 rotates with the output shaft 21 of the drive component 20, the first Hall element 32 can detect the rotational speed of the first magnet 31 and the output shaft 21 based on the change in the magnetic field of the first magnet 31. The second detection component includes a second Hall element 42 and a second magnet 41 fixedly connected to the roller 10. When the second magnet 41 rotates with the roller 10, the second Hall element 42 can detect the rotational speed of the second magnet 41 and the roller 10 based on the change in the magnetic field of the second magnet 41. This allows for real-time detection of the moving distance accuracy of the material box during the roller 10 transmission process, improving control accuracy. In other words, the aforementioned roller motor 100 can simultaneously detect the rotational speed of the drive component 20 and the rotational speed of the roller 10. Combined with the control mechanism, this improves the control accuracy of the roller 10's rotational speed, solving the problem of low roller speed control accuracy in the prior art.

[0047] The first Hall element 32 includes a first PCB board and a first Hall sensor disposed on the first PCB board, and a first magnet 31 is located within the magnetic detection range of the first Hall sensor. Preferably, the sensing surface of the first Hall sensor faces the first magnet 31.

[0048] Accordingly, the second Hall element 42 includes a second PCB board and a second Hall sensor disposed on the second PCB board, and the second magnet 41 is located within the magnetic detection range of the second Hall sensor. Preferably, the sensing surface of the second Hall sensor faces the second magnet 41.

[0049] Please refer to Figure 1 and Figure 7 In one embodiment of this application, the drum motor 100 further includes a control mechanism 51, which is electrically connected to the first Hall element 32, the second Hall element 42 and the drive member 20. The control mechanism 51 is used to receive the detection signal emitted by the first Hall element 32 and the detection signal emitted by the second Hall element 42, and control the rotation speed of the drive member 20 so as to adjust the rotation speed of the drive member 20 according to the rotation speed of the drum 10, thereby realizing closed-loop control.

[0050] It is understandable that when the rotational speed of the roller 10 is greater than the expected speed, the control mechanism 51 can reduce the rotational speed of the drive component 20; when the rotational speed of the roller 10 is less than the expected speed, the control mechanism 51 can increase the rotational speed of the drive component 20.

[0051] Please refer to Figure 1 and Figure 2 In one embodiment of this application, the roller 10 is provided with a receiving cavity 11, and the drive component 20, the first detection component, and the second detection component are all housed in the receiving cavity 11. In this way, the space occupied by the roller motor 100 can be saved.

[0052] In this embodiment, the drum motor 100 further includes a transmission mechanism 52 and a tensioning mechanism 53 disposed within the receiving cavity 11. One end of the transmission mechanism 52 is fixedly connected to the front end of the output shaft 21 of the drive member 20, and the other end is fixedly connected to the tensioning mechanism 53. That is to say, along the axial direction of the drum 10, the tensioning mechanism 53, the transmission mechanism 52, and the drive member 20 are connected in sequence, so the drive member 20 can drive the tensioning mechanism 53 to rotate through the transmission mechanism 52.

[0053] The tensioning mechanism 53 has a tensioning element on its outer peripheral wall that abuts against the inner wall of the roller 10. There is a large frictional resistance between the tensioning element and the inner wall of the roller 10, so that the tensioning element and the roller 10 are relatively stationary. When the tensioning mechanism 53 rotates, the tensioning element can drive the roller 10 to rotate around the rotation axis L. Specifically, the rotation axis L overlaps with the central axis of the roller 10.

[0054] The transmission mechanism 52 can be a planetary gearbox including a two-stage reduction assembly, which has high transmission efficiency, small size and weight, compact structure, small footprint, and low noise. It is understood that in other embodiments of this application, the planetary gearbox may also be equipped with more stages of reduction assemblies according to actual application needs, and this is not limited thereto.

[0055] For convenient electrical connection between the first Hall element 32, the second Hall element 42, and the control mechanism 51, please refer to... Figures 2 to 4 In one embodiment of this application, along the axial direction of the roller 10, the first detection component and the second detection component are located on the same side of the drive component 20, reducing the distance between the first Hall PCB board and the second Hall PCB board, facilitating the fixing and installation of the connecting wire, and reducing the possibility of the connecting wire getting tangled.

[0056] Specifically, the first detection component and the second detection component are located on the side of the drive component 20 away from the tensioning mechanism 53.

[0057] Please refer to Figures 1 to 4In one embodiment of this application, the roller motor 100 further includes a drive member fixing mechanism 54 and a roller support mechanism 55. The drive member fixing mechanism 54 is fixedly connected to one end of the drive member 20 and extends at least partially outside the receiving cavity 11. The drive member fixing mechanism 54 is used to fix the drive member 20 so that the drive member 20 is spaced apart from the roller 10, that is, there is no direct contact between the drive member 20 and the roller 10. The roller support mechanism 55 is located at the end of the roller 10 away from the drive member fixing mechanism 54 and extends partially outside the receiving cavity 11. The roller support mechanism 55 is used to support the roller 10. In this way, the position of the drive member 20 housed in the receiving cavity 11 remains unchanged, and the smoothness and stability of the rotation of the roller 10 can be guaranteed.

[0058] In this embodiment, the roller support mechanism 55 includes a support shaft and a connecting sleeve. The connecting sleeve is located within the receiving cavity 11 and is interference-fitted with the roller 10, thus achieving a fixed connection between the connecting sleeve and the roller 10. This allows the connecting sleeve and the roller 10 to rotate synchronously. The support shaft primarily supports the roller 10. In practical applications, a roller 10 with a motor output is typically connected to multiple unpowered sleeves to achieve a reasonable distribution of power. For example, when the roller 10 rotates around the rotation axis L, since the connecting sleeve is fixedly connected to the roller 10, the connecting sleeve will be driven and start rotating synchronously. By attaching a belt or other connecting piece to the end of the connecting sleeve away from the roller 10, the unpowered sleeves can be driven to rotate synchronously, thereby achieving the conveying of objects.

[0059] In this embodiment, please refer to Figure 3 and Figure 4 The driving component 20 includes a driving housing 22 and a driving body 23. The driving housing 22 has a receiving space inside, and the driving body 23 includes an output shaft 21. The driving component fixing mechanism 54 includes a support member 541 and a connector 542 connected to each other. The support member 541 extends outside the receiving cavity 11, and the connector 542 is received in the receiving space. The connector 542 and the driving housing 22 have a round transition fit, that is, the connector 542 is fixedly connected to the driving housing 22. The first Hall element 32 is disposed on the side of the connector 542 facing the output shaft 21.

[0060] Specifically, the support member 541 is a hollow column, and the connector 542 is sleeved on the support member 541. The connector 542 and the support member 541 are interference-fitted and flat-connected, so the connector 542 remains in a fixed position relative to the support member 541 and cannot rotate. The connector 542 and the drive housing 22 have a rounded transition fit. The drive housing 22 itself is fixed by the connector 542 and cannot rotate freely. The overall position of the drive member 20 is not easily changed, resulting in high stability and improved concentricity and reliability.

[0061] The driving principle of the aforementioned roller motor 100 is as follows: One end of the driving component 20 is fixed and supported by the driving component fixing mechanism 54. When the driving component 20 outputs power, the power is transmitted to the transmission mechanism 52, and the output shaft 21 of the transmission mechanism 52 drives the tensioning mechanism 53 to rotate. Since sufficient friction can be generated between the tensioning component and the inner wall of the roller 10, the tensioning mechanism 53 can drive the roller 10 to rotate. A roller support mechanism 55 is designed at the other end of the roller 10, which can be used to connect the unpowered roller 10 to drive its rotation.

[0062] Please refer to Figure 1 , Figure 4 and Figure 6 In one embodiment of this application, the roller motor 100 further includes a positioning member 56 fixedly connected to the connector 542, and a first Hall element 32 fixedly connected to the positioning member 56. Thus, the first Hall element 32 can be fixedly connected to the connector 542 via the positioning member 56, ensuring a stable position for the first Hall element 32 and preventing detection deviations that may result from arbitrary movement.

[0063] Specifically, the positioning member 56 includes a positioning ring 561 and extension rods 562 connected to each other. Multiple extension rods 562 are evenly distributed along the circumference of the positioning ring 561. Each extension rod 562 has a protrusion 563 at its end away from the positioning ring 561. Each protrusion 563 is bent and connected to the corresponding extension rod 562, and the end of each protrusion 563 away from the corresponding extension rod 562 extends towards the central axis of the positioning ring 561. The positioning ring 561, extension rods 562, and protrusions 563 can be an integral structure. The positioning ring 561 abuts against the end of the connecting member 542 facing the driving member 20, and the multiple extension rods 562 are located on the outer peripheral wall of the connecting member 542. Further, multiple limiting grooves can be formed on the outer peripheral wall of the connecting member 542, and each extension rod 562 is engaged in a corresponding limiting groove. Thus, the positioning member 56 can be limited by the limiting grooves, preventing the positioning member 56 from rotating relative to the connecting member 542. One side of the protrusion 563 abuts against the end of the connector 542 away from the drive member 20, and the other side of the protrusion 563 abuts against the second Hall element 42.

[0064] Furthermore, the first Hall element 32 is also fixedly connected to the drive body 23, further improving the stability of the position of the first Hall element 32. (See attached image for details.) Figures 4 to 5The driving body 23 is provided with a connecting rod 24. One end of the connecting rod 24 passes through and is fixedly connected to the first Hall element 32, so that the first Hall element 32 remains in a fixed position relative to the driving body 23. Specifically, a fixing clip 33 is provided on the side of the first Hall element 32 away from the driving body 23. The fixing clip 33 includes two opposing elastic clips. The end of the connecting rod 24 away from the driving body 23 passes through the first Hall element 32 and is clamped between the two elastic clips, which facilitates assembly. It can be understood that the first PCB board is provided with through holes for the connecting rod 24 to pass through. The number of through holes and connecting rods 24 can be multiple. Multiple connecting rods 24 are evenly distributed along the circumference of the driving body 23, which can improve the stability of the connection between the first Hall element 32 and the driving body 23.

[0065] Furthermore, along the axial direction of the roller 10, the positioning ring 561 has a certain width to provide sufficient space between the first Hall element 32 and the connector 542 for placing electronic components, control mechanisms 51, etc. It is understood that the extension rod 562 should have a slight deformation capability to facilitate the assembly of the positioning element 56 and the connector 542, thereby improving the assembly efficiency of the roller motor 100.

[0066] In addition, please refer to Figure 6 The positioning ring 561 has multiple connecting holes 564 and multiple protruding posts 565 on its ring wall. On the one hand, the screw passes through the first Hall PCB board of the first Hall element 32 and is threaded to the connecting hole 564; on the other hand, the multiple protruding posts 565 pass through the corresponding through holes on the first Hall PCB board, thereby realizing the fixed connection between the first Hall PCB board and the positioning member 56. The structure is stable and the process is simple.

[0067] It is understood that the connection between the first Hall element 32 and the positioning element 56 is not unique. The connection between the first Hall element 32 and the positioning element 56 can be at least one of threaded connection, snap-fit ​​connection and adhesive connection, and no restriction is imposed here.

[0068] Specifically, the first magnet 31 is a block magnet with its N and S poles located at opposite ends. When the first magnet 31 rotates with the output shaft 21, the magnetic field of the first magnet 31 changes relative to the fixed-position first Hall element 32, causing a change in the output voltage of the first Hall sensor. It can be understood that the shape of the first magnet 31 can be circular or strip-shaped, and there is no limitation here.

[0069] Please refer to Figure 1 and Figure 4In one embodiment of this application, the second magnet 41 is a ring magnet, and the second Hall element 42 and the second magnet 41 are both sleeved on the support member 541. The second Hall element 42 is spaced apart from the roller 10, and the second magnet 41 is fixedly connected to the inner wall of the roller 10. Thus, the second magnet 41 and the roller 10 maintain synchronous rotation or standstill.

[0070] Specifically, the second Hall element 42 has a ring-shaped second Hall PCB board, and its fixed connection with the support member 541 can be achieved through interference fit or multiple convex-concave structures, meaning the relative position of the second Hall element 42 and the support member 541 remains constant. It can be understood that the relative position of the first Hall element 32 and the second Hall element 42 remains constant, and they can be electrically connected through a connecting wire. Since the second Hall element 42 is spaced apart from the roller 10, the rotation of the roller 10 does not affect the position of the second Hall element 42; that is, the second Hall element 42 remains stationary.

[0071] In this embodiment, the magnetization direction of the second magnet 41 is the diameter direction, with half of it being the N pole and the other half being the S pole. When the second magnet 41 rotates with the roller 10 around the rotation axis L, the magnetic field of the second magnet 41 changes relative to the fixed-position second Hall element 42, causing a change in the output voltage of the second Hall sensor.

[0072] It is understood that in other embodiments of this application, the second Hall element 42 and the second magnet 41 may also be disposed outside the roller 10, and the second magnet 41 may be fixedly connected to the outer wall of the roller 10, which can also realize the real-time detection of the rotation speed of the roller 10. No limitation is made here.

[0073] Please refer to Figure 2 and Figure 4 In one embodiment of this application, the drum motor 100 further includes an end cap 60, which is partially embedded in and fixedly connected to the drum 10. The end cap 60 has an installation channel, and the support member 541 passes through the installation channel and extends to the outside of the receiving cavity 11. The second magnet 41 is fixedly installed in the installation channel. On the one hand, the end cap 60 can be used to fix the second magnet 41, facilitating the installation of the second detection component; on the other hand, the end cap 60 can be used to seal and prevent impurities from entering the drum 10.

[0074] In this embodiment, the end cap 60 includes a stop portion 61 disposed within the mounting channel, and the side of the second magnet 41 facing away from the second Hall element 42 abuts against the stop portion 61. It is understood that in other embodiments of this application, the second magnet 41 may also be embedded in the side wall of the end cap 60, but is not limited thereto.

[0075] Specifically, the end cap 60 includes a first body 62 and a second body 63 that are detachably connected. An installation channel passes through the first body 62, and an installation hole is provided on the second body 63. When the first body 62 and the second body 63 are mated, the installation hole is opposite to and communicates with the installation channel. The support member 541 passes through the installation channel and extends out of the receiving cavity 11 via the installation hole. The stop portion 61 is a ring-shaped structure protruding from the side wall of the installation channel, which can fully stop the second magnet 41 and define the installation position of the second magnet 41. It is understood that the shape of the stop portion 61 is not unique. For example, in other embodiments of this application, the stop portion 61 may also include multiple protrusions spaced apart on the side wall of the installation channel, arranged in a ring, but is not limited to this.

[0076] To improve the sealing performance of the end cap 60, the mating joint of the first body 62 and the second body 63 is fitted with multiple convex and concave structures. This reduces the likelihood of dust and other impurities entering the mounting channel or receiving cavity 11 through the connection between the second body 63 and the first body 62. Specifically, the multiple convex and concave structures are concentrically arranged. Furthermore, both the first body 62 and the second body 63 have through holes with threads on their sidewalls. After the second body 63 is mated with the first body 62, a screw that mates with the threaded through hole secures the first body 62 and the second body 63 together.

[0077] In addition, please refer to Figure 1 and Figure 4 The outer peripheral wall of the first body 62 is provided with a flange. When the end cap 60 is partially embedded in the roller 10, the first body 62 is partially embedded in the roller 10, and the end of the roller 10 abuts against the flange to hold the first body 62 at the end of the roller 10. That is to say, the flange is used to stop the first body 62 and prevent the first body 62 from sliding completely into the roller 10.

[0078] It is understandable that the outer diameter of the first main body 62 is larger than the outer diameter of the drive housing 22.

[0079] It is understandable that the diameter of the installation channel is larger than the size of the support 541 in order to avoid contact and friction between the support 541 and the end cap 60.

[0080] In addition, the support member 541 can be a hollow structure, and the electrical connection lines of the drive member 20, the first detection component and the second detection component can be passed through the support member 541 to connect to external power sources, displays, etc.

[0081] It is understood that the structure of the second magnet 41 can also be other. For example, in other embodiments of this application, the second magnet 41 can also be a block magnet, the second magnet 41 is fixedly mounted on a mounting ring, the second Hall element 42 and the mounting ring are both sleeved on the support member 541, the second Hall element 42 is spaced apart from the roller 10, and the mounting ring is fixedly connected to the inner wall of the roller 10.

[0082] Specifically, the mounting ring can be held in a groove in the inner wall of the roller 10, or the mounting ring can be connected to the inner wall of the roller 10 by screws, but is not limited to these.

[0083] The aforementioned roller motor 100 uses a first Hall element 32 to detect the rotational speed of the first magnet 31 and the output shaft 21, and a second Hall element 42 to detect the rotational speed of the second magnet 41 and the roller 10. This allows for real-time detection of the moving distance accuracy of the material box during the conveying process of the roller 10, thereby improving control accuracy. In other words, the roller motor 100 can simultaneously detect the rotational speed of the drive component 20 and the rotational speed of the roller 10. Combined with the control mechanism, this improves the control accuracy of the rotational speed of the roller 10, solving the problem of low roller speed control accuracy in the prior art.

[0084] 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 roller motor, comprising a roller and a drive component connected to each other, the drive component being used to drive the roller to rotate, characterized in that, The drum motor also includes: The first detection component includes a first magnet and a first Hall element. The first magnet is fixedly connected to the rear end of the output shaft of the drive component, and the roller is fixedly connected to the front end of the output shaft of the drive component. The first Hall element is used to sense the change in the magnetic field of the first magnet to detect the rotational speed of the output shaft. The second detection component includes a second magnet and a second Hall element. The second magnet is fixedly connected to the roller, and the second Hall element is used to sense changes in the magnetic field of the second magnet to detect the rotational speed of the roller. A control mechanism is electrically connected to the first Hall element, the second Hall element, and the drive element, respectively. The control mechanism is used to receive detection signals emitted by the first Hall element and the second Hall element, and to control the rotational speed of the drive element. When the rotational speed of the roller is greater than the expected speed, the control mechanism can reduce the rotational speed of the drive element; when the rotational speed of the roller is less than the expected speed, the control mechanism can increase the rotational speed of the drive element.

2. The drum motor according to claim 1, characterized in that, The roller has a receiving cavity, and the driving component, the first detection component and the second detection component are all housed in the receiving cavity.

3. The drum motor according to claim 2, characterized in that, The drum motor also includes; A drive component fixing mechanism is fixedly connected to one end of the drive component and extends at least partially outside the receiving cavity. The drive component fixing mechanism is used to fix the drive component so that the drive component is spaced apart from the roller. A roller support mechanism is located at the end of the roller away from the drive member fixing mechanism and extends partially outside the receiving cavity. The roller support mechanism is used to support the roller.

4. The drum motor according to claim 3, characterized in that, The driving component includes a driving housing and a driving body. The driving housing has a receiving space inside, and the driving body includes the output shaft. The drive component fixing mechanism includes a support member and a connector that are fixedly connected. The support member extends outside the receiving cavity, and the connector is received within the receiving space. The connector and the drive housing have a rounded transition fit. The first Hall element is disposed on the side of the connector facing the output shaft.

5. The drum motor according to claim 4, characterized in that, The drum motor also includes a positioning member fixedly connected to the connecting member, and the first Hall element is fixedly connected to the positioning member.

6. The drum motor according to claim 4, characterized in that, The second magnet is a ring magnet. Both the second Hall element and the second magnet are sleeved on the support member. The second Hall element is spaced apart from the roller, and the second magnet is fixedly connected to the inner wall of the roller.

7. The drum motor according to claim 4, characterized in that, The drum motor also includes an end cap, which is partially embedded in the drum and fixedly connected to the drum. The end cap has an installation channel, the support member passes through the installation channel and extends to the outside of the receiving cavity, and the second magnet is fixedly installed in the installation channel.

8. The drum motor according to claim 7, characterized in that, The end cap includes a stop portion disposed within the mounting channel, and the side of the second magnet opposite to the second Hall element abuts against the stop portion.

9. The drum motor according to claim 4, characterized in that, The second magnet is a block magnet, which is fixedly mounted on a mounting ring. The second Hall element and the mounting ring are both sleeved on the support member. The second Hall element is spaced apart from the roller, and the mounting ring is fixedly connected to the inner wall of the roller.

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