Clothes airing machine capable of performing feedback control on rotating speed of motor

Abstract

The utility model discloses a clothes airing machine capable of performing feedback control on the rotating speed of a motor, which comprises a main machine and an airing rod, a driving device is arranged in the main machine, and the driving device comprises the motor, a wire twisting disc for winding and unwinding a steel wire rope and a feedback controller; the motor controls the stranding disc to rotate; the stranding disc comprises an upper cover, a partition plate and a bottom plate, a first cavity for radially winding a steel wire rope is formed between the upper cover and the partition plate, and a second cavity for radially winding the steel wire rope is formed between the partition plate and the bottom plate; and the feedback controller comprises a roller with a wire slot and a speed sensor, and adopts a variable-diameter wire twisting disc to adjust the rotating speed of a motor for controlling the rotation of the wire twisting disc, so that the winding and unwinding speed of the steel wire rope is uniform, and the uniform lifting speed of the airing rod is further met.

Description

Technical Field

[0001] This utility model relates to a clothes drying rack, and more particularly to a clothes drying rack that uses feedback control to adjust the speed of the electrodes; in order to maintain the uniform lifting and lowering of the drying rod, the speed of the motor is adjusted through feedback control. Background Technology

[0002] The clothes drying rack consists of a main unit installed on the ceiling and a height-adjustable drying rod. The raising and lowering of the drying rod is achieved by a power unit inside the main unit that retracts and extends steel wire ropes. The lower ends of the two steel wire ropes are respectively connected to the ends of the drying rod. In order to better maintain the balance of the drying rod when it is stationary and when it is raised or lowered, a folding frame is added between the drying rod and the main unit.

[0003] The use of multi-threaded steel wire ropes significantly increases their length. For example, if a single-threaded steel wire rope is 1.2 meters long, then a three-threaded steel wire rope would require 3 meters. This would greatly increase the thickness of the twisted coil and make the controller larger. Consequently, it would increase the thickness and load-bearing requirements of the clothes drying unit, which is not conducive to the slimming and lightweight design of smart home devices. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a clothes drying rack with feedback control of motor speed. After adopting a variable diameter stranded wire reel, it is necessary to adjust the speed of the motor that controls the rotation of the stranded wire reel so that the winding and unwinding speed of the wire rope is uniform, thereby satisfying the uniform speed of the clothes drying rod lifting and lowering.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a clothes drying rack with feedback control of motor speed, including a main unit with a built-in drive device and a drying rod, wherein the drive device includes a motor, a winding reel for winding and unwinding steel wire rope and a feedback controller; the end of the steel wire rope leading out from the winding reel is connected to the drying rod to control the raising and lowering of the drying rod;

[0006] At least one pulley is provided at the end of the drying rod and at the end of the main unit, forming a pulley group for the steel wire rope to pass through, and forming at least three steel wire rope segments between the end of the drying rod and the end of the main unit.

[0007] The motor controls the rotation of the stranding reel; the stranding reel includes an upper cover, a partition, and a bottom plate, with a first cavity for radially winding the wire rope formed between the upper cover and the partition, and a second cavity for radially winding the wire rope formed between the partition and the bottom plate;

[0008] The feedback controller includes a roller with a groove and a speed sensor. A steel wire rope led from a stranded reel passes through the groove of the roller to drive the roller to rotate. The speed sensor detects the rotational speed of the roller.

[0009] The speed sensor feeds back the rotational speed of the roller to the feedback controller, which then adjusts the motor speed accordingly to ensure the wire rope is wound and unwound at a uniform speed.

[0010] A further preferred embodiment of this invention is that the speed sensor is an encoder or a potentiometer.

[0011] A further preferred embodiment of this utility model is: a rotating shaft passes through the strand reel, and the output shaft of the motor is connected to the rotating shaft through a gear set;

[0012] The rotating shaft passes through the center of the top cover, the partition, and the bottom plate, respectively.

[0013] A further preferred embodiment of this utility model is: a first concave-convex positioning structure is provided between the upper cover and the partition, and a second concave-convex positioning structure is provided between the bottom plate and the partition;

[0014] The top cover, partition, and bottom plate are connected and fixed together by screws.

[0015] A further preferred embodiment of this utility model is that the motor is fixed to the host unit by a bracket;

[0016] The first end of a rotating arm is axially connected to a bracket; the feedback controller is installed at the second end of the rotating arm.

[0017] A tension spring is provided between the second end of the rotating arm and the bracket, and an obstruction switch is provided on the bracket, which is located on the rotation path of the rotating arm.

[0018] A further preferred embodiment of this utility model is: the pulley group includes a first fixed pulley and a second fixed pulley installed on the side plate of the main unit, and a movable pulley installed on the inner wall of the rod seat;

[0019] The steel wire rope extending horizontally from the strand reel passes through the first fixed pulley, then vertically downwards around the movable pulley, and then vertically upwards around the second fixed pulley; the end of the vertically downwards steel wire rope is fixedly connected to the rod base.

[0020] A further preferred embodiment of this utility model is: a metal bracket is provided on the inner side of the rod seat;

[0021] The movable pulley is mounted on the metal bracket; the end of the steel wire rope is connected to the metal bracket;

[0022] The side plate is equipped with a first mounting bracket and a second mounting bracket. The first fixed pulley is mounted on the first mounting bracket, and the second fixed pulley is mounted on the second mounting bracket. The axle direction of the first fixed pulley is perpendicular to the axle direction of the second fixed pulley.

[0023] A further preferred embodiment of this utility model is that the gear set includes a first transmission tooth, a second transmission tooth, and a third transmission tooth;

[0024] The first transmission tooth is connected to the upper end of the rotating shaft, and the second and third transmission teeth are coaxially distributed vertically. The output shaft meshes with the third transmission tooth, and the second transmission tooth meshes with the first transmission tooth, thereby realizing the transmission of the output shaft to the stranded coil.

[0025] A further preferred technical solution of this utility model is as follows: when the drying rod encounters resistance during descent, causing the wire rope to lose its preset tension, the tension spring drives the rotating arm to rotate and triggers the resistance switch to shut off the motor.

[0026] A further preferred embodiment of this utility model is: when the drying rod rises and the wire rope is wound, the feedback controller controls the motor speed to gradually increase;

[0027] As the drying rack descends and the wire rope is released, the feedback controller controls the motor speed to gradually decrease.

[0028] This ensures that the steel wire rope is raised and lowered at a uniform speed.

[0029] Compared with existing technologies, the advantages of this invention are: This technical solution uses a feedback controller to precisely adjust the motor speed, effectively solving the problem of vibration and jamming caused by uneven wire rope winding and unwinding speeds during the raising and lowering of the drying rack. When the drying rack rises, the feedback controller detects a decrease in the wire rope winding and unwinding speed and immediately increases the motor speed to ensure uniform wire rope winding speed; when the drying rack descends, the feedback controller reduces the motor speed to ensure a smooth wire rope release speed. This dynamic adjustment mechanism ensures that the drying rack maintains a constant speed during raising and lowering, significantly improving the stability of the lifting and lowering process and providing users with a more comfortable and reliable user experience.

[0030] By employing variable-diameter stranded wire and a feedback controller in tandem, the internal structural layout of the clothes dryer casing has been optimized, significantly improving its operational efficiency and reliability. Optimizing the winding method of the steel wire rope has drastically reduced the thickness of the stranding reel, lightening the overall dimensions of the clothes dryer and making it more in line with the slim and lightweight design philosophy of smart homes. Simultaneously, the intelligent adjustment function of the feedback controller further enhances the operational stability of the clothes dryer, allowing for the permissible raising and lowering of the drying rod. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 A schematic diagram of the overall structure of the clothes drying rack Figure 1 ;

[0033] Figure 2 A schematic diagram of the overall structure of the clothes drying rack Figure 2 ;

[0034] Figure 3 Schematic diagram of the overall structure of the drive unit Figure 1 ;

[0035] Figure 4 Schematic diagram of the overall structure of the drive unit Figure 2 ;

[0036] Figure 5 This is a structural disassembly diagram of a stranded wire reel;

[0037] Figure 6 This is a partial structural cross-sectional view of the stranded wire reel;

[0038] Figure 7 This is a schematic diagram of the assembly of the motor and gear set;

[0039] Figure 8 This is an example. Figure 1 Enlarged view of point A in the middle;

[0040] Figure 9 This is an example. Figure 1 Enlarged view of section B in the middle. Detailed Implementation

[0041] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0042] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0043] like Figure 1 and Figure 2As shown, a clothes drying rack 100 with feedback control of motor speed mainly consists of a main unit 101 with a built-in drive device 103 and a height-adjustable drying rod 102. The main unit 101 is the core component of the clothes drying rack, and the built-in drive device 103 is the key to realizing the lifting function of the drying rod 102. It consists of a motor 10, a twisted wire reel 20, and a feedback controller 30.

[0044] Among them, the motor 10 is the power source of the drive device, providing power support for the operation of the clothes drying rack; the twisted wire reel 20 is responsible for winding and unwinding the wire rope 40. Through its precise structural design and stable operating performance, it ensures that the wire rope 40 always maintains a good condition during the winding and unwinding process.

[0045] After the steel wire rope 40 is led out from the twisted reel 20, its end is firmly connected to the drying rod 102. This connection method allows the rotation of the motor 10 to be transmitted to the drying rod 102 through the twisted reel 20 and the steel wire rope 40, thereby achieving smooth raising and lowering of the drying rod 102 and providing users with a convenient clothes-drying experience. The feedback controller 30, as the core of intelligent control, can monitor and adjust the speed of the motor 10 in real time to ensure that the drying rod 102 maintains a constant speed during the raising and lowering process.

[0046] At least one pulley 10 is provided at the end of the drying rod 102 and the end of the main unit 101, forming a pulley group 50 for the wire rope 40 to pass through, and forming at least three wire rope segments 41 between the end of the drying rod 102 and the end of the main unit 101.

[0047] like Figures 3 to 6 As shown, the motor 10 controls the twisted wire reel 20 to rotate; the twisted wire reel 20 includes an upper cover 21, a partition 22 and a bottom plate 23, a first cavity h1 for radially winding the wire rope 40 is formed between the upper cover 21 and the partition 22, and a second cavity h for radially winding the wire rope 40 is formed between the partition 22 and the bottom plate 23.

[0048] like Figure 3 As shown, the feedback controller 30 includes a roller 31 with a groove 311 and a speed sensor 32. The steel wire rope 40 led out from the strand 20 passes through the groove 311 of the roller 31 to drive the roller 31 to rotate. The speed sensor 32 detects the rotation speed of the roller 31. The speed sensor 32 feeds back the rotation speed of the roller 31 to the feedback controller 30. The feedback controller 30 controls the speed of the motor 10 to adjust accordingly to make the steel wire rope 40 be wound and unwound at a uniform speed.

[0049] It should be noted that while the use of multi-threaded steel wire ropes in traditional clothes drying racks increases load capacity, it also leads to a significant increase in the thickness of the coil. For example, when the length of a single-threaded steel wire rope is 1.2 meters, the length of a three-threaded steel wire rope needs to reach 3 meters, resulting in a significant increase in the thickness of the coil. This, in turn, makes the controller larger, and the overall thickness and load-bearing requirements of the clothes drying unit also increase. This runs counter to the design concept of slim and lightweight smart homes.

[0050] The variable-diameter stranded coil 20 used in this technical solution significantly reduces its thickness by optimizing its winding structure. This technique not only reduces the overall weight of the clothes drying rack 100 but also decreases the size of the main unit 101, making it more in line with the requirements of modern smart homes for slimness and lightness. By changing the gradually increasing winding radius during the winding process, the variable-diameter stranded coil 20 can be significantly reduced in thickness for the same length of steel wire rope 40, thus providing a better physical basis for subsequent feedback control.

[0051] The introduction of the feedback controller 30 is another key factor in achieving uniform lifting and lowering of the drying rack. The feedback controller 30 includes a roller 31 and a speed sensor 32. The wire rope 40, after being led out from the stranding reel 20, passes through the groove 311 of the roller 31, causing the roller 31 to rotate. The speed sensor 32 can detect the rotational speed of the roller 31 in real time and feed this speed information back to the controller 30. Based on the feedback speed data, the controller dynamically adjusts the speed of the motor 10, thereby ensuring that the winding and unwinding speed of the wire rope 40 remains uniform.

[0052] The coordinated operation of the variable-diameter stranded wire technology and the feedback controller 30 achieves a dual breakthrough in both structural optimization and functional enhancement for the clothes drying rack 100. From a structural perspective, the variable-diameter stranded wire method reduces the thickness of the stranding reel 20, providing more compact space for the installation and operation of the feedback controller 30. This significantly reduces the overall size and weight of the clothes drying rack 100, better aligning with the slim and lightweight design concept of smart homes. From a functional perspective, the intelligent adjustment function of the feedback controller 30 fully leverages the advantages of the stranding reel in this specific wire-line method. By monitoring and dynamically adjusting the speed of the motor 10 in real time, it ensures uniform winding and unwinding speeds of the wire rope 40, thereby achieving uniform lifting and lowering of the drying rod.

[0053] This collaborative approach not only solves the structural bulkiness problem caused by multi-threaded steel wire ropes in traditional clothes drying racks, but also improves the operating performance and user experience of the clothes drying rack through intelligent control.

[0054] Preferably, the speed sensor 32 in this embodiment is an encoder or a potentiometer.

[0055] More specifically, such as Figure 7As shown, a rotating shaft 50 passes through the stranded wire reel 20, and the output shaft 11 of the motor 10 is connected to the rotating shaft 50 through a gear set 60 to ensure the high efficiency and stability of power transmission.

[0056] The rotating shaft 50 passes through the center of the upper cover 21, partition 22, and bottom plate 23 of the strand reel 20, tightly connecting these three components together. To further enhance structural stability, a first concave-convex positioning structure v1 is provided between the upper cover 21 and the partition 22, and a second concave-convex positioning structure v2 is provided between the bottom plate 23 and the partition 22. These positioning structures can effectively prevent relative displacement of components during operation, ensuring a more stable overall structure of the strand reel 20. Finally, the upper cover 21, partition 22, and bottom plate 23 are connected and fixed by screws t, forming a robust whole that provides reliable support for the winding and unwinding of the wire rope 40.

[0057] Furthermore, regarding the specific technical means of gear set 60: such as Figure 7 As shown, the motor 10 is securely fixed to the main unit 101 by the bracket 70. This fixing method not only ensures the stability of the motor 10 during operation, but also provides a solid foundation for the installation of other components.

[0058] The first end 81 of a rotating arm 80 is connected to the bracket 70 via a shaft, allowing it to rotate flexibly. A feedback controller 30 is installed at the second end 82 of the rotating arm 80 to monitor and adjust the speed of the motor 10 in real time, ensuring that the lifting and lowering process of the drying rod 102 is smooth and uniform.

[0059] To implement the obstacle detection protection function, a tension spring 90 is installed between the second end 82 of the rotating arm 80 and the bracket 70. When the clothes drying rod 102 encounters resistance during descent, the tension of the wire rope 40 will suddenly change. The tension spring 90 will drive the rotating arm 80 to rotate, triggering the obstacle detection switch 71 installed on the bracket 70, thereby immediately shutting off the motor 10, preventing the clothes drying rod 102 from continuing to descend, protecting the clothes drying machine from damage and ensuring user safety.

[0060] like Figure 8 and Figure 9 As shown, the pulley block 50 is an important component in the clothes drying machine used to guide the steel wire rope 40. The pulley block 50 includes a first fixed pulley 51 and a second fixed pulley 52 mounted on the main unit side plate 12, and a movable pulley 53 mounted on the inner wall of the rod base 13. The steel wire rope 40, extending horizontally from the twisted reel 20, first passes through the first fixed pulley 51, then vertically downwards around the movable pulley 53, and then vertically upwards around the second fixed pulley 52. ​​Finally, the end of the vertically downwards steel wire rope 40 is fixedly connected to the rod base 13.

[0061] This multi-pulley arrangement not only optimizes the transmission path of the wire rope 40, but also significantly improves the stability and operating efficiency of the drying rack 102 during lifting and lowering. The axle directions of the first fixed pulley 51 and the second fixed pulley 52 are perpendicular to each other. This design further enhances the structural stability of the pulley block 50, ensuring that the wire rope 40 remains smooth throughout complex movements.

[0062] Further elaboration on the pulley block 50 is provided by a sturdy metal bracket 14 located inside the rod base 13. This metal bracket 14 not only provides a stable mounting base for the movable pulley 53 but also ensures a secure connection at the end of the wire rope 40. The movable pulley 53 is mounted on the metal bracket 14, and its position and angle ensure that the wire rope 40 can smoothly change direction when passing through, reducing friction and wear.

[0063] On the side plate 12 of the main unit, a first mounting bracket 121 and a second mounting bracket 122 are respectively installed, providing precise installation positions for the first fixed pulley 51 and the second fixed pulley 52. ​​The first fixed pulley 51 is mounted on the first mounting bracket 121, while the second fixed pulley 52 is mounted on the second mounting bracket 122. This separate mounting method not only improves the installation accuracy of the pulleys but also ensures the stability of the pulley assembly 50 during operation. It is particularly noteworthy that the axle direction of the first fixed pulley 51 is perpendicular to the axle direction of the second fixed pulley 52. ​​This perpendicular arrangement allows the wire rope 40 to smoothly change direction in multiple directions when passing through the pulley assembly 50, further optimizing the transmission path of the wire rope 40 and reducing friction and wear of the wire rope 40 during operation.

[0064] In addition, the specific collaborative technical means of the gear set 60 include the following: The gear set 60 is a key component in the clothes drying machine that realizes the power transmission between the motor 10 and the winding reel 20. The gear set 60 includes a first transmission gear 61, a second transmission gear 62 and a third transmission gear 63. These transmission gears, through precise meshing, efficiently transmit the power of the motor 10 to the winding reel 20, ensuring that the winding reel 20 can rotate smoothly and evenly, thereby realizing the winding and unwinding of the wire rope 40.

[0065] The first transmission gear 61 is connected to the upper end of the rotating shaft 50, the second transmission gear 62 and the third transmission gear 63 are coaxially distributed vertically, the output shaft 11 meshes with the third transmission gear 63, and the second transmission gear 62 meshes with the first transmission gear 61, thereby realizing the transmission of the output shaft 11 to the stranded coil 20.

[0066] When the drying rod 102 rises, the wire rope 40 is wound onto the strand 20. At this time, the feedback controller 30 will detect that the winding speed of the wire rope 40 is gradually decreasing, and then control the speed of the motor 10 to gradually increase to ensure that the winding speed of the wire rope 40 remains uniform.

[0067] Conversely, when the drying rod 102 descends, the wire rope 40 is released from the winding reel 20. The feedback controller 30 detects that the winding speed of the wire rope 40 is gradually increasing, and will control the speed of the motor 10 to gradually decrease, thereby ensuring that the release speed of the wire rope 40 is uniform.

[0068] Through the precise adjustment mechanism of the feedback controller 30, the wire rope 40 can achieve uniform speed of raising and lowering during the rising and falling process, which effectively improves the stability of the lifting and lowering of the drying rod 102 and the overall operating performance of the clothes drying rack, providing users with a safer, more reliable and convenient user experience.

[0069] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0070] This invention introduces a clothes drying rack with feedback control of motor speed, as provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments are merely for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A clothes drying rack with feedback control of motor speed, characterized in that: The device includes a main unit with a built-in drive mechanism and a drying rod. The drive mechanism includes a motor, a reel for winding and unwinding steel wire rope, and a feedback controller. The end of the steel wire rope leading from the reel is connected to the drying rod to control the raising and lowering of the drying rod. At least one pulley is provided at the end of the drying rod and at the end of the main unit, forming a pulley group for the wire rope to pass through, and forming at least three wire rope segments between the end of the drying rod and the end of the main unit. The motor controls the rotation of the stranding reel; the stranding reel includes an upper cover, a partition, and a bottom plate, with a first cavity for radially winding the wire rope formed between the upper cover and the partition, and a second cavity for radially winding the wire rope formed between the partition and the bottom plate; the feedback controller includes a roller with a groove and a speed sensor, the wire rope led out from the stranding reel passes through the groove of the roller to drive the roller to rotate, and the speed sensor detects the rotation speed of the roller; The speed sensor feeds back the rotational speed of the roller to the feedback controller, which then controls the motor speed to adjust accordingly so that the wire rope can be wound and unwound at a uniform speed.

2. A clothes drying rack with feedback control of motor speed according to claim 1, characterized in that: The speed sensor is an encoder or a potentiometer.

3. A clothes drying rack with feedback control of motor speed according to claim 1, characterized in that: A rotating shaft passes through the stranded wire reel, and the output shaft of the motor is connected to the rotating shaft through a gear set; The rotating shaft passes through the center of the top cover, the partition, and the bottom plate, respectively.

4. A clothes drying rack with feedback control of motor speed according to claim 1, characterized in that: A first concave-convex positioning structure is provided between the upper cover and the partition, and a second concave-convex positioning structure is provided between the bottom plate and the partition; The top cover, partition, and bottom plate are connected and fixed together by screws.

5. A clothes drying rack with feedback control of motor speed according to claim 1, characterized in that: The motor is fixed to the main unit by a bracket; The first end of a rotating arm is axially connected to a bracket; the feedback controller is installed at the second end of the rotating arm. A tension spring is provided between the second end of the rotating arm and the bracket, and an obstruction switch is provided on the bracket, which is located on the rotation path of the rotating arm.

6. A clothes drying rack with feedback control of motor speed according to claim 1, characterized in that: The pulley assembly includes a first fixed pulley and a second fixed pulley mounted on the side plate of the main unit, and a movable pulley mounted on the inner wall of the rod seat; The steel wire rope extending horizontally from the strand reel passes through the first fixed pulley, then vertically downwards around the movable pulley, and then vertically upwards around the second fixed pulley; the end of the vertically downwards steel wire rope is fixedly connected to the rod base.

7. The clothes drying machine with feedback control of the motor rotation speed according to claim 6, characterized in that: A metal bracket is provided on the inner side of the rod seat; The movable pulley is mounted on the metal bracket; the end of the steel wire rope is connected to the metal bracket; The side plate is equipped with a first mounting bracket and a second mounting bracket. The first fixed pulley is mounted on the first mounting bracket, and the second fixed pulley is mounted on the second mounting bracket. The axle direction of the first fixed pulley is perpendicular to the axle direction of the second fixed pulley.

8. A clothes drying rack with feedback control of motor speed according to claim 3, characterized in that: The gear set includes a first transmission tooth, a second transmission tooth, and a third transmission tooth; The first transmission tooth is connected to the upper end of the rotating shaft, and the second and third transmission teeth are coaxially distributed vertically. The output shaft meshes with the third transmission tooth, and the second transmission tooth meshes with the first transmission tooth, thereby realizing the transmission of the output shaft to the stranded coil.

9. A clothes drying rack with feedback control of motor speed according to claim 5, characterized in that: When the descent of the drying rod encounters resistance and the wire rope loses its preset tension, the tension spring drives the rotating arm to rotate and triggers the resistance switch to shut off the motor.

10. The clothes drying machine with feedback control of the rotational speed of the electric motor according to claim 1, characterized in that: As the drying rack rises and the wire rope winds, the feedback controller gradually increases the speed of the motor. As the drying rack descends and the wire rope is released, the feedback controller controls the motor speed to gradually decrease. This ensures that the steel wire rope is raised and lowered at a uniform speed.

Images