Transmission device and transmission equipment

Abstract

The utility model discloses a transmission device and transmission equipment which are used for avoiding off tracking, abrasion or breakage caused by uneven stress of a belt. The device comprises a driving mechanism and a driven mechanism, a driving wheel is arranged on the driving mechanism, a driven wheel is arranged on the driven mechanism, and the driving wheel and the driven wheel are distributed on the same side of the driving mechanism and the driven mechanism; a first limiting plate is arranged at one end, far away from the driving mechanism, of the driving wheel; a second limiting plate is arranged at the end, away from the driven mechanism, of the driven wheel, and the driving wheel and the driven wheel are connected through a belt to achieve transmission.

Description

Technical Field

[0001] This application relates to the field of motors and power transmission, and more particularly to a transmission device and transmission equipment. Background Technology

[0002] Transmission devices are widely used in CNC machine tools, robots, elevators and other equipment. In the material conveying process of automated production lines, motor-driven conveyor belts, sorting equipment and other equipment can quickly and accurately transport and distribute materials according to preset programs, making the entire production process closely connected, reducing manual intervention, improving the continuity and automation of production, and thus enhancing the competitiveness of enterprises in the market.

[0003] In existing technology, when assembling the driving and driven wheels on a transmission device, the lack of an auxiliary mechanism forces assemblers to repeatedly adjust their positions to ensure they are on the same end face. This assembly process relies entirely on the assembler's attention and operational accuracy. If the assembler is not focused enough or makes an error, the driving and driven wheels may misalign, causing the belt to experience uneven tension and deviate from its normal operating track during operation. This results in belt wear and affects the normal operation of the transmission device. Utility Model Content

[0004] To address the aforementioned technical problems, this application discloses a transmission device and transmission equipment that can prevent belt misalignment, wear, or breakage caused by uneven force distribution.

[0005] This application provides a transmission device, including:

[0006] Active mechanism, passive mechanism;

[0007] The active mechanism is provided with an active wheel, and the driven mechanism is provided with a driven wheel. The active wheel and the driven wheel are distributed on the same side of the active mechanism and the driven mechanism.

[0008] The driving wheel is provided with a first limiting plate at the end away from the driving mechanism; the driven wheel is provided with a second limiting plate at the end away from the driven mechanism, and the driving wheel and the driven wheel are connected by a belt to achieve transmission.

[0009] Optionally, the first limiting plate is provided with at least one screw hole;

[0010] The screw holes are distributed circumferentially, and the first limiting plate and the driving wheel are bolted together through the screw holes.

[0011] Optionally, the second limiting plate is provided with a second screw hole in the middle, and the second limiting plate is bolted to the driven wheel through the second screw hole.

[0012] Optionally, the active mechanism includes a coupling, and a groove is provided inside the coupling on the side near the active wheel;

[0013] A solid protrusion is provided on the side of the first limiting plate near the drive wheel. The solid protrusion cooperates with the groove to limit the drive wheel.

[0014] Optionally, the active mechanism further includes a motor shaft, and the coupling is connected to the motor shaft via a key connection.

[0015] The first limiting plate is fixedly connected to the coupling to limit the axial displacement of the drive wheel;

[0016] The coupling is connected to the motor shaft via a flat key. The two sides of the flat key are working surfaces, and torque is transmitted through the cooperation of the key and the keyway.

[0017] Optionally, the driven mechanism includes at least one idler wheel, a support rod, and a housing;

[0018] The fixed end of the support rod is provided with an external thread, and the fixed end of the support rod is threadedly connected to the housing through the external thread;

[0019] The idler wheel is equipped with a bearing inside, and the idler wheel is sleeved on the support rod through the bearing.

[0020] Optionally, the active mechanism further includes a motor bracket, on which the motor is fixedly mounted by bolts, and the motor bracket is used to support and fix the motor.

[0021] Optionally, the drive wheel is provided with a third threaded hole, through which a bolt passes through the drive wheel and the coupling and abuts against the motor shaft, thereby restricting slippage between the coupling and the motor shaft.

[0022] Optionally, the driven mechanism further includes a first idler wheel limiting plate and a second idler wheel limiting plate for axially limiting the idler wheel;

[0023] Both the first idler wheel limiting plate and the second idler wheel limiting plate are provided with at least one positioning hole in the circumferential direction. The positioning hole is used to cooperate with the corresponding positioning pin on the support rod.

[0024] A second aspect of this application provides a transmission device, comprising: a transmission device body and any possible transmission device according to the first aspect; one end of the transmission device is fixed to the transmission device, and the transmission device is used to drive the transmission device to operate.

[0025] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0026] This application adds limiting plates to the driving and driven pulleys, restricting their axial movement range. This allows the driving and driven pulleys to be aligned on the same end face during assembly without repeated adjustments, enabling rapid installation of components, effectively shortening assembly time and improving production efficiency. Furthermore, the alignment of the driving and driven pulley end faces ensures the belt receives uniform tension during operation, allowing it to run smoothly along its normal track. This avoids uneven belt tension caused by misalignment, reducing the possibility of belt deviation. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a schematic diagram of a transmission device according to this application;

[0029] Figure 2 This is a side view of a transmission device according to this application;

[0030] Figure 3 This is a cross-sectional structural schematic diagram of the active mechanism in a transmission device according to this application;

[0031] Figure 4 This is a partial structural schematic diagram of the driving mechanism in a transmission device according to this application;

[0032] Figure 5 This is a schematic diagram of the structure of the first limiting plate in a transmission device according to this application;

[0033] Figure 6 This is a partial structural schematic diagram of the driven mechanism in a transmission device according to this application;

[0034] Figure 7 This is a front structural schematic diagram of a driven mechanism of a transmission device according to this application;

[0035] Figure 8 This is a schematic diagram of the structure of a transmission device according to this application;

[0036] In the diagram: Active mechanism 01, Driven mechanism 02, Driven wheel 011, First limiting plate 012, Solid protrusion 0121, Coupling 013, Motor bracket 014, Waist-shaped hole 015, Belt 016, Motor 017, Second bolt 018, Groove 019, Motor shaft 020, Driven wheel 021, Housing 022, Idler wheel 023, Second limiting plate 024, First idler wheel limiting plate 025, Second idler wheel limiting plate 026, Support rod 027, Transmission device 03. Detailed Implementation

[0037] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0038] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0041] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] To address the aforementioned technical problems, this application provides a transmission device and transmission equipment to prevent belt misalignment, wear, or breakage caused by uneven force distribution.

[0043] Please see Figures 1-7 The transmission device provided in this application includes:

[0044] The device comprises an active mechanism 01 and a driven mechanism 02. The active mechanism 01 is equipped with an active wheel 011, and the driven mechanism 02 is equipped with a driven wheel 021. The active wheel 011 and the driven wheel 021 are located on the same side of the active mechanism 01 and the driven mechanism 02. A first limiting plate 012 is provided at the end of the active wheel 01 away from the active mechanism 01. A second limiting plate 024 is provided at the end of the driven wheel 021 away from the driven mechanism 02. The active wheel 011 and the driven wheel 021 are connected by a belt 016 to achieve transmission.

[0045] The driving mechanism 01 is the power source of the entire transmission device, powered by a motor 017. When the motor 017 starts, power is transmitted to the driving wheel 011 of the driving mechanism 01. Since the motor shaft 020 is connected to the driving wheel 011, the rotation of the motor 017 directly drives the driving wheel 011 to rotate. The driving wheel 011 and the driven wheel 021 are connected by a belt 016. When the driving wheel 011 rotates, it drives the driven wheel 021 to rotate through the friction of the belt 016. The first limiting plate 012 and the second limiting plate 024 respectively limit the axial displacement of the driving wheel 011 and the driven wheel 021, ensuring that the driving wheel 011 and the driven wheel 021 are flush on the same end face. This prevents the belt 016 from being subjected to uneven tension during operation due to the uneven end faces of the driving wheel 011 and the driven wheel 021, thus avoiding deviation or breakage.

[0046] The device adds limiting plates to the driving pulley 011 and driven pulley 021, restricting their axial movement range. This allows the driving pulley 011 and driven pulley 021 to be aligned on the same end face during assembly without repeated adjustments, thus quickly installing components, effectively shortening assembly time and improving production efficiency. Furthermore, the alignment of the end faces of the driving pulley 011 and driven pulley 021 ensures that the belt 016 receives uniform tension during operation, enabling it to run smoothly along its normal track. This avoids uneven tension on the belt 016 due to misalignment, reducing the possibility of belt misalignment.

[0047] In an optional embodiment, the first limiting plate 012 is provided with at least one screw hole; the screw holes are circumferentially distributed, and the first limiting plate 012 and the drive wheel 011 are bolted together through the screw holes.

[0048] In this embodiment, the first limiting plate 012 is made of a metal material with certain strength and rigidity, such as carbon steel or aluminum alloy. The driving wheel 011 is selected according to the appropriate size and material based on the transmission requirements. At least one screw hole is machined on the first limiting plate 012. The number and diameter of the screw holes are determined according to the size and load-bearing capacity of the driving wheel 011. The screw holes are distributed circumferentially on the first limiting plate 012, with the center of the circumference coinciding with the axis of the driving wheel 011.

[0049] During installation, first place the first limiting plate 012 at the corresponding position on the drive wheel 011, aligning the screw holes with the corresponding holes on the drive wheel 011. Then, secure the first limiting plate 012 to the drive wheel 011 using bolts. The bolt specifications should match the size of the screw holes to ensure a stable connection.

[0050] In an optional embodiment, the second limiting plate 024 is provided with a second screw hole in the middle, and the second limiting plate 024 is bolted to the driven wheel 021 through the second screw hole.

[0051] In this embodiment, the second limiting plate 024 is made of a metal material with certain strength and hardness, such as stainless steel or alloy steel, to ensure that it can withstand the force generated when the driven wheel 021 is running. The driven wheel 021 is selected with appropriate size and material according to specific transmission requirements.

[0052] A second threaded hole is precisely machined in the middle of the second limiting plate 024 using machining methods. The diameter and pitch of the second threaded hole must match the selected bolt. The driven wheel 021 is installed on the corresponding shaft of the transmission device, ensuring that the driven wheel 021 can rotate freely. The second limiting plate 024 is brought close to the driven wheel 021, so that the second threaded hole in the middle of the second limiting plate 024 is precisely aligned with the corresponding mounting hole on the driven wheel 021. Because the second threaded hole is located in the middle of the second limiting plate 024, the accurate position can be found more easily during the alignment process.

[0053] Select a suitable bolt, pass it through the second threaded hole on the second limit plate 024 and the mounting hole on the driven wheel 021, and then tighten it with a nut. During the tightening process, ensure that the bolt is tightened so that the second limit plate 024 and the driven wheel 021 are tightly connected.

[0054] In an optional embodiment, the active mechanism 01 includes a coupling 013, and a groove 019 is provided inside the coupling 013 on the side near the active wheel 011; a solid protrusion 0121 is provided in the middle of the first limiting plate 012 on the side near the active wheel 011, and the solid protrusion 0121 cooperates with the groove 019 to limit the active wheel 011.

[0055] Please continue reading. Figure 4 and Figure 5 In this embodiment, coupling 013 is the core component of the drive mechanism 01, and a groove 019 is provided inside it near the drive wheel 011. The shape and size of the groove 019 match the solid protrusion 0121 to ensure a tight fit. Coupling 013 is made of high-strength material to improve its durability and stability. A solid protrusion 0121 is provided in the middle of the first limiting plate 012 near the drive wheel 011. The first limiting plate 012 is made of high-strength material, such as stainless steel or alloy steel, to improve its durability and stability. The drive wheel 011 is a key component for power transmission, and its stability directly affects the operating efficiency and safety of the equipment. By cooperating with the groove 019 inside coupling 013 and the solid protrusion 0121 on the limiting plate, precise positioning and stable operation of the drive wheel 011 are achieved.

[0056] When the drive mechanism 01 starts working, power is transmitted to the drive wheel 011 through coupling 013. Due to the engagement of solid protrusions 0121 and 019, the axial and radial displacement of the drive wheel 011 is restricted. When the drive wheel 011 is subjected to axial force, the solid protrusion 0121 interacts with the sidewall of the groove 019, preventing the drive wheel 011 from moving axially; when the drive wheel 011 is subjected to radial force, the mating surfaces of the solid protrusion 0121 and the groove 019 provide sufficient support to prevent the drive wheel 011 from shifting radially, thereby ensuring the stable operation of the drive wheel 011.

[0057] In an optional embodiment, the active mechanism 01 further includes a motor shaft 020, and a coupling 013 is connected to the motor shaft 020 by a key connection; a first limiting plate 012 is fixedly connected to the coupling 013 to limit the axial displacement of the active wheel 011; the coupling 013 is connected to the motor shaft 020 by a flat key, the two sides of the flat key being working surfaces, and torque is transmitted through the cooperation of the key and the keyway.

[0058] In this embodiment, when the motor 017 starts, the motor shaft 020 begins to rotate, transmitting torque to the coupling 013 via a key connection. The coupling 013 then transmits power to the drive wheel 011, causing the drive wheel 011 to rotate. During the operation of the drive wheel 011, since the first limiting plate 012 is fixedly connected to the coupling 013, and the solid protrusion 0121 engages with the groove 019, when the drive wheel 011 is subjected to axial force, the first limiting plate 012 generates a reverse force, preventing the axial displacement of the drive wheel 011. This ensures the stability of the drive wheel 011 in its axial position and guarantees the normal operation of the entire drive mechanism 01.

[0059] A key that matches the keyway of the motor shaft 020 is machined inside the coupling 013. The key is selected with appropriate size and material, such as ordinary carbon steel, and its surface should be properly treated to improve wear resistance and fatigue resistance.

[0060] In this embodiment, a flat key is a common mechanical connector with working surfaces on both sides. Keyways adapted to the flat key are machined on the motor shaft 020 and coupling 013. The flat key is installed in the keyways of the motor shaft 020 and coupling 013, and torque is transmitted through the tight fit between the key and the sides of the keyway. When the motor shaft 020 rotates, the side of the keyway of the motor shaft 020 pushes the side of the flat key, and the flat key then pushes the side of the keyway of the coupling 013, thereby transmitting torque from the motor shaft 020 to the coupling 013, which in turn drives other components connected to the coupling 013.

[0061] The two sides of the flat key serve as working surfaces, which fit tightly with the sides of the keyway, effectively transmitting larger torques, reducing power losses during transmission, and improving transmission efficiency.

[0062] In an optional embodiment, the driven mechanism 02 includes at least one idler wheel 023, a support rod 027, and a housing 022; the fixed end of the support rod 027 is provided with an external thread, and the fixed end of the support rod 027 is threadedly connected to the housing 022 through the external thread; the idler wheel 023 is provided with a bearing inside, and the idler wheel 023 is sleeved on the support rod 027 through the bearing.

[0063] The support rod 027 is made of metal material with sufficient strength and rigidity. The external thread size and accuracy at the fixed end of the support rod 027 meet the relevant standard requirements. The housing 022 is provided with an internal thread hole that matches the external thread. The depth and accuracy of the internal thread hole should ensure that the support rod 027 can be firmly installed on the housing 022. The outer diameter of the support rod 027 is adapted to the inner diameter of the bearing installed inside the idler wheel 023, so that the idler wheel 023 can be installed on the support rod 027 through the bearing, and the bearing is firmly installed and rotates flexibly.

[0064] Please continue reading. Figure 7The idler pulley 023 is specifically used for: the angle at which the belt 016 wraps around the driven pulley 021. The smaller the angle, the more the belt 016 meshes with the driven pulley 021, and the lower the chance of skipping teeth or running off-center. The larger the angle, the higher the chance. In addition, when the housing 022 is disassembled, the driven mechanism 02 can be lifted directly from the top, and the belt 016 does not need to be disassembled, reducing disassembly time and facilitating the maintenance of the belt 016.

[0065] In this embodiment, the fixed end of the support rod 027 is threaded to the housing 022 via an external thread. This threaded connection provides reliable connection force, ensuring the support rod 027 will not loosen during operation. Furthermore, the threaded connection facilitates installation and disassembly, making maintenance and repair of the driven mechanism 02 easier. The idler wheel 023 is mounted on the support rod 027 via a bearing. The bearing reduces friction between the idler wheel 023 and the support rod 027, lowering energy loss and improving transmission efficiency.

[0066] In an optional embodiment, the active mechanism 01 further includes a motor bracket 014, on which the motor 017 is fixedly mounted by bolts. The motor bracket 014 is used to support and fix the motor 017.

[0067] In this embodiment, the motor bracket 014 is made of steel plate or aluminum alloy plate, and the motor bracket 014 is surface treated such as painting or galvanizing to improve its corrosion resistance. The motor shaft 020 on the motor 017 passes through the motor bracket 014 and connects to the drive wheel 011. The motor bracket 014 is provided with an oblong hole 015. There is a protrusion on one end of the motor 017 near the motor bracket 014. The motor 017 connects to the oblong hole 015 on the motor bracket 014 through the protrusion, fixing the motor 017 to the motor bracket 014 and preventing the motor 017 from shifting during operation.

[0068] In an optional embodiment, a third screw hole is provided on the drive wheel 011, and a second bolt 018 passes through the third screw hole, passes through the drive wheel 011 and the coupling 013, and abuts against the motor shaft 020 to limit the slippage between the coupling 013 and the motor shaft 020.

[0069] A third screw hole is provided in the circumferential direction of the drive wheel 011. The motor shaft 020 is coated with anti-slip paint. When the second bolt 018 is tightened through the third screw hole, the end of the second bolt 018 tightly abuts against the surface of the motor shaft 020, thereby generating sufficient friction to prevent relative sliding between the coupling 013 and the motor shaft 020.

[0070] In this embodiment, the contact between the second bolt 018 and the motor shaft 020 increases the friction between the coupling 013 and the motor shaft 020, which can reliably limit the sliding between the two, ensure stable power transmission, and improve the working efficiency and reliability of the active mechanism 01.

[0071] In an optional embodiment, the driven mechanism 02 further includes a first idler wheel limiting plate 025 and a second idler wheel limiting plate 026 for axially limiting the idler wheel; both the first idler wheel limiting plate 025 and the second idler wheel limiting plate 026 are provided with at least one positioning hole in the circumferential direction, and the positioning hole is used to cooperate with the corresponding positioning pin on the support rod 027.

[0072] The first idler wheel limiting plate 025 and the second idler wheel limiting plate 026 are used to axially limit the idler wheels. These two limiting plates are respectively set on the side of different idler wheels away from the driven mechanism 02. By restricting the movement of the idler wheels in the axial direction, the stability of the idler wheels during transmission is ensured. Both the first idler wheel limiting plate 025 and the second idler wheel limiting plate 026 are provided with at least one positioning hole in the circumferential direction. The positioning hole is used to cooperate with the corresponding positioning pin on the support rod 027. The positioning pin is installed on the support rod 027. When the first idler wheel limiting plate 025 and the second idler wheel limiting plate 026 are installed on the driven mechanism 02, the positioning hole and the positioning pin are accurately aligned and cooperate, ensuring the accurate installation position of the limiting plate.

[0073] In this embodiment, the first idler wheel limiting plate 025 and the second idler wheel limiting plate 026 can reliably limit the axial displacement of the idler wheel and determine the position of the idler wheel during installation, ensuring that one end of the idler wheel is on the same end face as one end of the driving wheel 011 and the driven wheel 021 during installation, which effectively improves the efficiency of installing the idler wheel, the driving wheel 011 and the driven wheel 021.

[0074] Please see Figure 8 This application provides a transmission device, including: a transmission device body and Figures 1-7 The transmission device of any embodiment; one end of the transmission equipment is fixed on the transmission device, and the transmission device is used to drive the transmission equipment to run.

[0075] One end of the transmission device 03 is connected to the transmission mechanism, receiving the power transmitted from it. Depending on the type and operational requirements of the transmission device 03, the power is converted into a specific form of motion to achieve the transfer of materials or items.

[0076] Using belt 016 as the traction and load-bearing component, belt 016 circulates under the drive of gears. Various types of load-bearing components can be installed on belt 016 for conveying different types of materials. The materials are driven by the load-bearing components and are transported along with the movement of belt 016.

[0077] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transmission device, characterized in that, include: Active mechanism, passive mechanism; The active mechanism is provided with an active wheel, and the driven mechanism is provided with a driven wheel. The active wheel and the driven wheel are distributed on the same side of the active mechanism and the driven mechanism. The driving wheel is provided with a first limiting plate at the end away from the driving mechanism; the driven wheel is provided with a second limiting plate at the end away from the driven mechanism, and the driving wheel and the driven wheel are connected by a belt to achieve transmission.

2. The transmission device according to claim 1, characterized in that, The first limiting plate is provided with at least one screw hole; The screw holes are distributed circumferentially, and the first limiting plate and the driving wheel are bolted together through the screw holes.

3. The transmission device according to claim 1, characterized in that, The second limiting plate has a second screw hole in the middle, and the second limiting plate is bolted to the driven wheel through the second screw hole.

4. The transmission device according to claim 1, characterized in that, The active mechanism includes a coupling, and a groove is provided inside the coupling on the side near the active wheel; A solid protrusion is provided on the side of the first limiting plate near the drive wheel. The solid protrusion cooperates with the groove to limit the drive wheel.

5. The transmission device according to claim 4, characterized in that, The active mechanism also includes a motor shaft, and the coupling is connected to the motor shaft by a key connection. The first limiting plate is fixedly connected to the coupling to limit the axial displacement of the drive wheel; The coupling is connected to the motor shaft via a flat key. The two sides of the flat key are working surfaces, and torque is transmitted through the cooperation of the key and the keyway.

6. The transmission device according to claim 1, characterized in that, The driven mechanism includes at least one idler wheel, a support rod, and a housing; The fixed end of the support rod is provided with an external thread, and the fixed end of the support rod is threadedly connected to the housing through the external thread; The idler wheel is equipped with a bearing inside, and the idler wheel is sleeved on the support rod through the bearing.

7. The transmission device according to any one of claims 1 to 6, characterized in that, The active mechanism also includes a motor bracket, on which the motor is fixedly mounted by bolts. The motor bracket is used to support and fix the motor.

8. The transmission device according to claim 5, characterized in that, The drive wheel is provided with a third screw hole, through which a bolt passes through the drive wheel and the coupling and abuts against the motor shaft, thereby preventing slippage between the coupling and the motor shaft.

9. The transmission device according to any one of claims 1 to 6, characterized in that, The driven mechanism further includes a first idler wheel limiting plate and a second idler wheel limiting plate, which are used to axially limit the idler wheel; Both the first idler wheel limiting plate and the second idler wheel limiting plate are provided with at least one positioning hole in the circumferential direction. The positioning hole is used to cooperate with the corresponding positioning pin on the support rod.

10. A transmission device, characterized in that, include: The main body of the transmission equipment and the transmission device as described in any one of claims 1-9; One end of the transmission device is fixed to the transmission device, which is used to drive the transmission device to operate.

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