Airing rod lifting driving device

Abstract

The utility model discloses an airing rod lifting driving device which comprises a motor and a wire twisting device, and the wire twisting device comprises a shell, a first wire twisting disc and a second wire twisting disc. A lower limiting microswitch and an upper limiting microswitch are respectively arranged on the top wall corresponding to the first wire twisting disc; a first stirring piece is arranged on the periphery of the first rotating disc, and a second stirring piece is arranged on the periphery of the second rotating disc; the first wire twisting disc and the first rotating disc are in transmission through a first gear set; the second wire twisting disc and the first rotating disc are in transmission through a second gear set; when the first rotating disc rotates towards a first direction, the first shifting piece touches the lower limiting microswitch to stop the descending of the airing rod; when the second rotating disc rotates towards a second direction, the second shifting piece touches the upper limiting microswitch to stop the lifting of the airing rod; up-and-down limiting control over lifting of the airing rod is achieved through the single wire twisting disc, and accumulated errors caused by cooperation of multiple components are remarkably reduced.

Description

Technical Field

[0001] This utility model relates to a clothes drying rack, and more particularly to a lifting drive device that can control the drying rod to descend to the lowest position and rise to the highest position. Background Technology

[0002] The raising and lowering of the clothes drying rack in an electric clothes drying rack is achieved through a lifting drive device; specifically, the lifting drive device includes a housing, a motor, a left twisted wire reel, and a right twisted wire reel.

[0003] During the raising and lowering of the drying rack, a lifting drive device is needed to control the upper and lower limits of the drying rack, which is achieved by using a micro switch to control the motor to stop rotating.

[0004] The housing corresponding to the left stranded coil is equipped with an upper limit micro switch, and the housing corresponding to the right stranded coil is equipped with a lower limit micro switch. The left and right stranded coils are driven by gears.

[0005] In traditional methods, the two stranded coils may have their own errors in manufacturing, installation, and coordination with the microswitch. For example, there may be a certain deviation when the first stranded coil controls the lower limit, and there may also be a deviation when the second stranded coil controls the upper limit. The accumulation of these two deviations will cause the actual stopping position of the drying rack to deviate significantly from the expected position. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a lifting drive device with higher precision control of the upper and lower limits of the drying rack lifting.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a drying rack lifting drive device, including a motor and a stranding device, wherein the stranding device includes a housing, a first stranding reel and a second stranding reel; the motor drives the first stranding reel and the second stranding reel to rotate through a transmission component;

[0008] The housing includes a bottom wall, an outer peripheral wall, and a top wall; a lower limit micro switch and an upper limit micro switch are respectively provided on the top wall corresponding to the first strand;

[0009] The first rotating disk is provided on the top wall of the first twisted wire reel, and a first actuating element is provided on the outer periphery of the first rotating disk. A second rotating disk is provided on the first rotating disk, and a second actuating element is provided on the outer periphery of the second rotating disk.

[0010] The first stranded wire reel is driven by a first gear set; the second stranded wire reel is driven by a second gear set.

[0011] When the first rotating disk rotates in the first direction, the first actuating element touches the lower limit micro switch to stop the drying rod from descending; when the second rotating disk rotates in the second direction, the second actuating element touches the upper limit micro switch to stop the drying rod from rising.

[0012] A further preferred embodiment of this utility model is as follows: the first gear set includes a top tooth fixed on the first stranding disc, a composite tooth mounted on the top wall, and a first inner annular tooth inside the first rotating disc;

[0013] The top tooth passes through the top wall, and the composite tooth includes an integral upper tooth portion and a lower tooth portion; the top tooth meshes with the lower tooth portion, and the upper tooth portion meshes with the first inner annular tooth.

[0014] A further preferred embodiment of this utility model is as follows: the second gear set includes a transmission tooth eccentrically disposed on the first rotating disk and a second inner annular tooth on the second rotating disk, wherein the transmission tooth includes a lower insert post and an upper transmission tooth portion;

[0015] The first rotating disk is provided with a socket, and the plug is rotatably located in the socket;

[0016] The transmission teeth mesh with the second inner annular teeth.

[0017] A further preferred embodiment of this utility model is: a central column is provided on the top wall, and the central hole of the first rotating disk falls on the central column;

[0018] The second rotating disk has a through hole at its center, the second inner annular tooth is located at the lower part of the outer periphery of the through hole, and a step is provided at the upper part of the outer periphery of the through hole, with a cover plate covering the step;

[0019] An adjustment section with an extension cover plate is provided above the transmission gear, and the adjustment section has an adjustment hole.

[0020] A further preferred embodiment of this utility model is: the transmission assembly includes a screw and a composite transmission gear mounted on the motor output shaft, wherein the composite transmission gear includes an integral upper gear and a lower gear;

[0021] The first stranding reel includes a lower first stranding drum and an upper first disc gear, and the second stranding reel includes a lower second stranding drum and an upper second disc gear;

[0022] The screw meshes with the lower gear, the upper gear meshes with the first disc gear, and the first disc gear meshes with the second disc gear.

[0023] A further preferred embodiment of this utility model is as follows: a reference mark is provided on the cover plate, and a scale representing the length of the wire rope is provided on the inner circumferential edge of the second rotating disk; when the tool is inserted into the adjustment hole, the transmission gear is rotated by rotating the adjustment part, thereby rotating the second rotating disk; the rotation amplitude of the second rotating disk relative to the reference mark represents the adjusted length of the wire rope.

[0024] A further preferred embodiment of this invention is that the adjustment hole is a cross-shaped or internal hexagonal hole.

[0025] A further preferred embodiment of this invention is that the cross-sectional shape of the first and second actuating members is elliptical or circular, and the outer end walls of the first and second actuating members are provided with anti-slip textures to improve the reliability of contact with the micro switch.

[0026] A further preferred embodiment of this utility model is as follows: the center of the first rotating disk is provided with a concave cavity, and a central hole is located in the concave cavity; a plurality of vertical hooks are arranged at intervals around the outer periphery of the central hole, and the cover plate is provided with a snap-fit ​​hole for inserting the vertical hooks; the vertical hooks cooperate with the snap-fit ​​hole.

[0027] A further preferred embodiment of this utility model is: a vertical threaded hole is provided in the middle of the central column on the top wall;

[0028] A limit adjustment screw passes through the cover plate, the second rotating disk, and the first rotating disk in sequence to engage with the vertical threaded hole of the central column to achieve fastening.

[0029] Compared with existing technologies, the advantages of this invention are: In this technical solution, the upper and lower limits of the drying rod are controlled by a single twisted reel, reducing the cumulative error caused by the cooperation of multiple components. This technique can more accurately control the drying rod to stop at the desired upper and lower limit positions, significantly improving the accuracy of the drying rod's raising and lowering. Specifically, the transmission path of a single twisted reel is more direct, reducing the accumulation of errors in intermediate links, thereby ensuring that the drying rod accurately reaches the preset position during each raising and lowering process.

[0030] Furthermore, this technical solution uses a single stranded reel to control the upper and lower limits, resulting in a simpler transmission path. By optimizing the design of the transmission components, intermediate transmission links and potential mechanical interference points are reduced. For example, the rational configuration of the first and second gear sets achieves efficient power transmission while avoiding instability caused by multi-stage transmission.

[0031] Furthermore, this technical solution controls the upper and lower limits using a single twisted-wire reel, allowing for control of both limits based on the same set of parameters and operating mechanism. This unified control standard not only simplifies system complexity but also improves control accuracy and reliability. For example, precise raising and lowering control of the drying rack can be achieved simply by calibrating the interaction between one twisted-wire reel and the microswitch. Attached Figure Description

[0032] 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.

[0033] Figure 1 A schematic diagram showing the overall effect of the upper limit micro switch being triggered;

[0034] Figure 2 This is a schematic diagram showing the overall effect of the lower limit micro switch being triggered.

[0035] Figure 3 A structural disassembly diagram of the lifting control system. Figure 1 ;

[0036] Figure 4 A structural disassembly diagram of the lifting control system. Figure 2 ;

[0037] Figure 5 A structural disassembly diagram of the lifting control system. Figure 3 ;

[0038] Figure 6 This is a schematic diagram of the transmission structure between the motor and the two stranded coils;

[0039] Figure 7 This is a schematic diagram of the meshing transmission between the first rotating disk and the upper toothed part;

[0040] Figure 8 This is a schematic diagram of the overall structure of the transmission gear in this utility model. 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 Figures 1 to 5 As shown, the clothes drying rack lifting drive device 100 is an intelligent device for controlling the raising and lowering of a clothes drying rack, widely used in electric clothes drying machines. The device mainly includes a motor 101, a stranding device 102, and a housing 30. The stranding device consists of a first stranding reel 10 and a second stranding reel 20. The motor 101 drives the two stranding reels to rotate via a transmission assembly 40, thereby achieving precise raising and lowering of the clothes drying rack. The housing 30 serves as the support frame of the device; its compact and robust structure effectively protects the internal components. The transmission assembly 40 uses a screw 41 and a compound transmission gear 42 to efficiently transmit the motor's power to the stranding reels, ensuring smooth and efficient transmission.

[0044] This invention aims to achieve precise limit control of the clothes drying rod by using an upper limit micro switch (a) and a lower limit micro switch (b), avoiding inconvenience caused by positional deviations. Compared with traditional clothes drying rod lifting devices, this invention has significant advantages: controlling the upper and lower limits with a single coil reduces the cumulative error caused by the cooperation of multiple components, enabling more precise control of the clothes drying rod to stop at the required upper and lower limit positions; the transmission path is simpler, reducing intermediate transmission links and mechanical interference points, thus improving transmission stability; only the cooperation between the coil and the micro switch needs to be calibrated, simplifying the calibration process and improving calibration accuracy. Specific technical solutions will be described below:

[0045] The housing 30 is a crucial component of the clothesline lifting drive device. Its ingenious structure and high functionality primarily consist of a bottom wall, outer peripheral wall, and top wall. The bottom wall provides a stable foundation for the entire device, ensuring stability during operation. The outer peripheral wall protects the internal components from damage caused by external dust, debris, and accidental impacts. The top wall not only provides a mounting platform for the upper structure but also integrates multiple functional areas, such as the mounting locations for upper limit microswitches, lower limit microswitches, and other sensors. These design features enable the housing 30 to not only provide excellent protection but also effectively support the intelligent operation of the device, providing a reliable hardware foundation for precise lifting control of the clothesline.

[0046] The top wall 11 corresponding to the first stranded wire reel 10 is equipped with a lower limit micro switch b and an upper limit micro switch a. These two micro switches play a crucial role in the clothesline lifting and lowering drive device. When the clothesline descends to the lowest position, the first actuating element 51 on the first stranded wire reel 10 will touch the lower limit micro switch b, triggering the switch and stopping the motor, thus ensuring that the clothesline stops accurately at the lowest position. Similarly, when the clothesline rises to the highest position, the second actuating element 61 on the second rotating disk 60 will touch the upper limit micro switch a, triggering the switch and stopping the motor, ensuring that the clothesline stops accurately at the highest position; and preventing the clothesline from being damaged or malfunctioning due to excessive lifting and lowering.

[0047] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in the clothesline lifting drive device 100, a first rotating disk 50 is installed on the top wall 11 of the first stranding reel 10. This rotating disk is one of the key components of the entire device's transmission system. A first actuating element 51 is provided on the outer periphery of the first rotating disk 50. Its shape and position are carefully designed to accurately trigger the lower limit micro switch b during the clothesline descent. At the same time, a second rotating disk 60 is also installed on the first rotating disk 50. A second actuating element 61 is provided on the outer periphery of the second rotating disk 60 to trigger the upper limit micro switch a during the clothesline rise. This layered design improves transmission efficiency and reliability.

[0048] The first stranded wire reel 10 and the first rotating disk 50 are connected by a first gear set c. This gear set includes a top tooth c1 fixed on the first stranded wire reel 10, a compound tooth c2 mounted on the top wall 11, and a first inner ring tooth c3 inside the first rotating disk 50. The compound tooth c2 is composed of an integral upper tooth portion c21 and a lower tooth portion c22, wherein the top tooth c1 meshes with the lower tooth portion c22, and the upper tooth portion c21 meshes with the first inner ring tooth c3, thereby efficiently transmitting the rotational motion of the first stranded wire reel 10 to the first rotating disk 50.

[0049] Similarly, the second stranded reel 20 and the second rotating disk 60 are connected by a second gear set d. This gear set includes a transmission tooth d1 eccentrically mounted on the first rotating disk 50 and a second inner ring tooth d2 on the second rotating disk 60. The lower part of the transmission tooth d1 is a plug post d11, which is rotatably located in the plug hole 52 of the first rotating disk 50. The upper part of the transmission tooth d12 meshes with the second inner ring tooth d2, realizing the rotation of the second rotating disk 60. This gear set technology not only ensures the smoothness of transmission but also realizes complex motion conversion through the eccentric transmission tooth d1.

[0050] During the raising and lowering of the drying rack, the direction and position control of the movement of the first rotating disk 50 and the second rotating disk 60 are crucial. When the first rotating disk 50 rotates in the first direction (usually clockwise), the first actuating element 51 contacts the lower limit micro switch b mounted on the top wall 11, triggering the switch and sending a signal to stop the motor, thus ensuring that the drying rack stops accurately at its lowest position. This process, through the precise triggering of the micro switch, prevents the drying rack from being damaged or malfunctioning due to excessive descent.

[0051] Similarly, when the second rotating disc 60 rotates in the second direction (usually counterclockwise), the second actuating element 61 will contact the upper limit micro switch a, triggering the switch and stopping the motor, ensuring that the clothes drying rod stops accurately at the highest position. This bidirectional limit control technology not only improves the accuracy of raising and lowering the clothes drying rod, but also enhances the safety of use, providing users with a more reliable and convenient clothes drying experience.

[0052] It should be further clarified that the first gear set c consists of a top tooth c1 fixed on the first winding disc 10, a compound tooth c2 mounted on the top wall 11, and a first inner ring tooth c3 inside the first rotating disk 50. The top tooth c1 passes through the top wall 11 and meshes with the lower tooth portion c22 of the compound tooth c2, while the upper tooth portion c21 of the compound tooth c2 meshes with the first inner ring tooth c3 inside the first rotating disk 50, as shown below. Figure 7 As shown. This structure not only ensures efficient power transmission from the first stranded coil 10 to the first rotating disc 50, but also achieves adjustment of the transmission ratio and conversion of the direction of motion through the upper and lower teeth of the compound gear c2.

[0053] The second gear set d is used to transmit power from the first rotating disk 50 to the second rotating disk 60. For example... Figure 4 and Figure 5 As shown, the gear set includes a transmission tooth d1 eccentrically mounted on a first rotating disk 50 and a second inner ring tooth d2 mounted on a second rotating disk 60. The transmission tooth d1 consists of a lower insertion post d11 and an upper transmission tooth portion d12. The insertion post d11 is located within an insertion hole 52 on the first rotating disk 50 and can rotate freely. The transmission tooth portion d12 meshes with the second inner ring tooth d2 on the second rotating disk 60. This eccentric mechanism enables the second rotating disk 60 to achieve a different rotation direction than the first rotating disk 50.

[0054] Furthermore, it should be noted that in the drying rack lifting drive device, a central column 13 is provided on the top wall 11 to support and position the first rotating disk 50 and indirectly support the second rotating disk 60. The central hole 53 of the first rotating disk 50 cooperates with the central column 13 to ensure the stable rotation of the rotating disk.

[0055] The second rotating disk 60 has a through hole 62 at its center, and a second inner annular tooth d2 on its lower outer periphery for meshing with the transmission tooth d1. A step 63 is provided on the upper outer periphery of the through hole 62 for mounting a cover plate 70. The cover plate 70, through its cooperation with the step 63, fixes the second rotating disk 60 onto the first rotating disk 50, while also serving a protective and sealing function.

[0056] An adjustment section v is provided above the transmission gear d12. This adjustment section v extends out of the cover plate 70 and is exposed through an operating hole 71 on the cover plate for easy external operation. The adjustment section v is provided with an adjustment hole d14, preferably, as shown below. Figure 8 As shown, its shape is a cross or internal hexagonal hole, which facilitates adjustment using standard tools.

[0057] In addition, the cover plate 70 is provided with a reference mark (preferably a pointing arrow), and the inner circumferential edge of the second rotating disk 60 is provided with a scale representing the length of the wire rope. By inserting a tool into the adjustment hole d14 and rotating the adjustment part v, the transmission gear part d12 can be driven to rotate, thereby driving the second rotating disk 60 to rotate relative to the first rotating disk 50, thereby achieving the purpose of adjusting the relative position of the second rotating disk 60 (that is, achieving the purpose of adjusting the rotation amplitude of the second toggle member 61 to the upper limit position micro switch a). At this time, the rotation amplitude of the second rotating disk 60 relative to the reference mark can directly reflect the adjustment length of the wire rope, that is, the position of the highest upper limit position of the drying rack can be adjusted.

[0058] Preferably, a central column 13 is provided on the top wall 11, and the central hole 53 of the first rotating disk 50 cooperates with the central column 13 to ensure that the first rotating disk 50 maintains a stable axial position and coaxiality during rotation, thereby achieving a smooth transmission effect. A through hole 62 is provided in the center of the second rotating disk 60, and a second inner annular tooth d2 is provided on its lower outer periphery for meshing with the transmission tooth d1 to achieve power transmission. A step 63 is designed on the upper outer periphery of the through hole 62, which is used to install the cover plate 70. The cover plate 70 is tightly fixed to the second rotating disk 60 through its cooperation with the step 63, serving to protect the internal structure, prevent dust and debris from entering, and provide support and guidance for the adjustment part v of the transmission tooth d1.

[0059] Regarding the transmission component 40, it should be noted that, as Figure 6As shown, in the clothesline lifting drive device, the transmission assembly 40 is the core component for achieving power transmission and optimizing transmission efficiency. Specifically, the transmission assembly 40 includes a screw 41 and a compound transmission gear 42 mounted on the motor output shaft. The compound transmission gear 42 consists of an integrated upper gear 421 and a lower gear 422. The first stranding reel 10 consists of a lower first stranding drum 14 and an upper first disc gear 12, while the second stranding reel 20 consists of a lower second stranding drum 21 and an upper second disc gear 22. The transmission path is as follows: the screw 41 meshes with the lower gear 422, transmitting the motor's power to the compound transmission gear 42. The upper gear 421 of the compound transmission gear 42 meshes with the first disc gear 12, driving the first stranding reel 10 to rotate. The first disc gear 12 further meshes with the second disc gear 22, realizing the rotation of the second stranding reel 20. This multi-stage transmission not only improves transmission efficiency but also reduces vibration and noise during operation by optimizing the gear meshing angle and clearance.

[0060] Preferably, the first actuating member 51 and the second actuating member 61 have elliptical or circular cross-sectional shapes, and the outer end walls of the first and second actuating members are provided with anti-slip textures to improve the reliability of contact with the micro switch. This shape ensures that the force is more uniform when the actuating member contacts the micro switch, reducing stress concentration caused by irregular shape. Moreover, the anti-slip texture on the outer end wall of the actuating member can significantly increase the friction of the contact surface and reduce poor contact caused by slippage.

[0061] The assembly techniques for the upper and lower components will be explained below. The first rotating disk 50 has a cavity f at its center, and a central hole 53 is located in the cavity f. Multiple vertical hooks r1 are arranged at intervals around the outer periphery of the central hole 53. The cover plate 70 has snap holes r2 for inserting the vertical hooks r1. The vertical hooks r1 cooperate with the snap holes r2 to achieve quick installation and fixation of the first rotating disk 50 and the cover plate 70.

[0062] A vertical threaded hole is provided in the center of the central column 13 on the top wall 11 for installing the limit adjustment screw 80. A positioning hole 72 is provided in the middle part of the cover plate 70, which is aligned with the vertical threaded hole of the central column 13. The limit adjustment screw 80 passes through the positioning hole 72 of the cover plate 70, the through hole 62 of the second rotating disk 60 and the center hole 53 of the first rotating disk 50 in sequence, and finally engages with the vertical threaded hole of the central column 13 to achieve the fastening of the entire device.

[0063] In actual assembly, the main technical purpose of the limit adjusting screw 80 in the drying rack lifting drive device is to ensure the stability of the components when the device is not in operation, and to prevent loosening or displacement caused by external vibration or impact. The core of this technical approach is to improve the reliability and durability of the entire device through reasonable mechanical constraints, while avoiding the impact of component loosening on the normal operation of the device.

[0064] Furthermore, the limit adjusting screw 80 also takes into account its impact on the normal transmission of the gear set. It avoids excessive pressure of the limit adjusting screw 80 on the rotating disk, ensuring that the meshing transmission of the gear set can still function normally. This balances the needs of fixation and transmission, ensuring that the device remains stable while achieving efficient transmission during operation.

[0065] 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.

[0066] This invention describes a guide wheel shaft, a wire pressing device, and a driving device for preventing wire rope tangling. Specific examples are used to illustrate the principle and implementation of this invention. The descriptions of these embodiments are merely for the purpose of helping to understand this invention and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. Airdrying rod lifting drive device, characterized by: The utility model provides a kind of wire stranding device, including motor and wire stranding device, wherein, the wire stranding device includes shell, first stranding disc and second stranding disc;The motor drives the first stranding disc and second stranding disc rotation by transmission assembly; The shell includes bottom wall, outer wall and top wall;The top wall corresponding to the first stranding disc is equipped with lower limit position micro switch and upper limit position micro switch respectively; The top wall of the first stranding disc is equipped with first rotary disc, the outer periphery of the first rotary disc is equipped with first dialing member, the first rotary disc is equipped with second rotary disc, and the outer periphery of the second rotary disc is equipped with second dialing member; The first stranding disc and the first rotary disc are driven by first gear set;The second stranding disc and the first rotary disc are driven by second gear set; When the first rotary disc rotates towards first direction, first dialing member touches lower limit position micro switch and makes drying rod stop descending;When the second rotary disc rotates towards second direction, second dialing member touches upper limit position micro switch and makes drying rod stop ascending.

2. The hanger lifting drive of claim 1, wherein: The first gear set includes top teeth fixed on the first stranding disc, composite teeth installed on the top wall and first inner annular teeth in the first rotary disc; The top teeth pass through the top wall, and the composite teeth include integral upper tooth part and lower tooth part;The top teeth are engaged with the lower tooth part, and the upper tooth part is engaged with the first inner annular teeth.

3. The hanger lifting drive of claim 1, wherein: The second gear set includes transmission teeth eccentrically arranged on the first rotary disc and second inner annular teeth on the second rotary disc, and the transmission teeth include lower insertion column and upper transmission tooth part; The first rotary disc is equipped with an insertion hole, and the insertion column is freely rotatable in the insertion hole; The transmission tooth part is engaged with the second inner annular teeth.

4. The hanger lifting drive of claim 3, wherein: The top wall is equipped with a central column, and the center hole of the first rotary disc falls on the central column; The second rotary disc is centrally provided with a through hole, the second inner annular teeth are arranged on the outer periphery of the lower part of the through hole, the upper part of the outer periphery of the through hole is provided with a step, and a cover plate covers the step; The upper part of the transmission tooth part is provided with an adjusting part extending out of the cover plate, and the adjusting part is provided with an adjusting hole.

5. The hanger lifting drive of claim 1, wherein: The transmission assembly includes a screw rod arranged on the output shaft of the motor and a composite transmission gear, and the composite transmission gear includes integral upper gear and lower gear; The first stranding disc includes first stranding cylinder in lower part and first disc gear in upper part, and the second stranding disc includes second stranding cylinder in lower part and second disc gear in upper part; The screw rod is engaged with the lower gear, the upper gear is engaged with the first disc gear, and the first disc gear is engaged with the second disc gear.

6. The hanger lifting drive of claim 4, wherein: The cover plate is provided with a reference mark, and the circumferential inner side of the second rotary disc is provided with a scale representing the length of steel wire rope;When the tool is inserted into the adjusting hole, the transmission gear is rotated by rotating the adjusting part to rotate the second rotary disc;The rotation amplitude of the second rotary disc relative to the reference mark represents the adjusting length of the steel wire rope.

7. The hanger lifting drive of claim 4, wherein: The adjusting hole is a cross or internal hexagonal hole.

8. The hanger lifting drive of claim 1, wherein: The cross-sectional shape of the first dialing member and the second dialing member is oval or circular, and the outer end wall surface of the first dialing member and the second dialing member is provided with anti-skid texture to improve the contact reliability with the micro switch.

9. The clothes pole lifting drive device according to claim 4, wherein: The center of the first rotating disc is provided with a concave cavity, and a center hole is located in the concave cavity; a plurality of vertical hook portions are arranged on the outer periphery of the center hole at intervals, and the cover plate is provided with buckle holes for the vertical hook portions to be inserted; the vertical hook portions are matched with the buckle holes.

10. The clothes pole lifting drive device according to claim 4, wherein: A vertical threaded hole is formed in the middle of the center column on the top wall; A limiting adjusting screw passes through the cover plate, the second rotating disc and the first rotating disc in sequence to be matched with the vertical threaded hole of the center column, so that fastening is realized.

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