Traction rope winding and unwinding device and clothes airing machine

Abstract

The utility model provides a pulling rope winding and unwinding device and a clothes airing machine, the pulling rope winding and unwinding device comprises a winding assembly and a driving assembly, the winding assembly comprises at least one winding shaft, and the winding shaft comprises a first winding shaft, a transmission wheel and a second winding shaft which are coaxially arranged; the first winding shaft and the second winding shaft are arranged at the two ends of the transmission wheel respectively and provided with a first wire storage groove and a second wire storage groove which surround the axis of the transmission wheel respectively. The driving assembly is connected with the transmission wheel of each winding shaft. For the two pulling ropes wound on the same winding shaft, no matter the two pulling ropes are wound into the first wire storage groove and the second wire storage groove or released from the first wire storage groove and the second wire storage groove, the two pulling ropes are located at the two ends of the transmission wheel, and therefore mutual interference and entanglement are avoided; the number of the wire winding shafts can be multiplied by only increasing the number of the wire winding shafts so as to adapt to more traction ropes, and therefore the number of the traction ropes capable of being wound and released by the wire winding assembly is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a traction rope winding and unwinding device and a clothes dryer. Background Art

[0002] The traction rope winding and unwinding device is an important part of the main unit of the clothes dryer. The existing traction rope winding and unwinding device includes a wire winding shaft and a driving assembly. The wire winding shaft is provided with a storage groove for the rope. The driving assembly includes a transmission unit connected to the wire winding shaft and a driver connected to the transmission unit. The power generated by the driver is distributed to each wire winding shaft through the transmission unit. The wire winding shaft is driven by the transmission unit to rotate and wind the traction rope in the storage groove to lower the clothes drying rack / rod, or release the traction rope in the storage groove to lift the clothes drying rack / rod.

[0003] The number of wire winding shafts increases with the increase in the number of traction ropes. Currently, the means to increase the number of wire winding shafts include: using more traction rope winding and unwinding devices to double the number of wire winding shafts, increasing the number of wire winding shafts and simultaneously increasing the number of stages and complexity of the transmission unit so that the transmission unit can drive more wire winding shafts. The above means either increase the weight and cost of the clothes dryer, or have the risk of entanglement and interference among multiple traction ropes, or lead to a decrease in the transmission efficiency of the transmission unit. The decrease in transmission efficiency easily causes asynchronous rotation between different wire winding shafts. The asynchronous rotation of the wire winding shafts results in asynchronous winding and unwinding rates of each traction rope, and further causes difficulty in maintaining a stable posture of the clothes drying rack / rod during the lifting and lowering process. Summary of the Utility Model

[0004] In view of this, the utility model provides a traction rope winding and unwinding device and a clothes dryer that are suitable for winding and unwinding multiple traction ropes and can achieve synchronous winding and synchronous unwinding of the traction ropes.

[0005] The traction rope winding and unwinding device provided by the utility model includes a wire winding assembly and a driving assembly. The wire winding assembly includes at least one wire winding shaft. The wire winding shaft includes a first wire winding shaft, a transmission wheel, and a second wire winding shaft that are coaxially arranged. The first wire winding shaft and the second wire winding shaft are respectively arranged at both ends of the transmission wheel, and are respectively provided with a first storage groove and a second storage groove around the axis of the transmission wheel. The driving assembly is connected to the transmission wheel of each wire winding shaft.

[0006] The traction rope winding and unwinding device of the utility model has the following beneficial effects:

[0007] Each spool can synchronously wind and release two traction ropes through its first winding shaft and second winding shaft. For the two traction ropes wound around the same spool, whether they are wound into the first storage groove and the second storage groove or released from the first storage groove and the second storage groove, the two traction ropes are located at both ends of the transmission wheel and thus will not interfere and entangle with each other. Only by increasing the number of spools can the number of winding shafts be doubled to adapt to more traction ropes, thereby increasing the number of traction ropes that the winding assembly can wind and release. The connection between the driving assembly and the transmission wheel of the spool can follow the existing connection method between the driver and the transmission unit.

[0008] In some embodiments, the outer diameter of the first winding shaft and the outer diameter of the second winding shaft are both smaller than the outer diameter of the transmission wheel.

[0009] With such a setting, the transmission wheel can prevent the traction rope responsible for winding and releasing by the first winding shaft from being wrongly wound into the second storage groove, and prevent the traction rope responsible for winding and releasing by the second winding shaft from being wrongly wound into the first storage groove, further reducing the possibility of interference and entanglement between the two traction ropes wound around the same spool.

[0010] In some embodiments, the first winding shaft and the second winding shaft are symmetric about the equidistant cross-section of the transmission wheel, and the equidistant cross-section is perpendicular to the axial direction of the transmission wheel and bisects the transmission wheel into two equal parts.

[0011] With such a setting, the two traction ropes wound around the same spool achieve equal-length winding and equal-length release, that is, the winding lengths of the two traction ropes in the first storage groove and the second storage groove are equal. When they are released as the spool rotates, the length released from the first storage groove by one of them is equal to the length released from the second storage groove by the other, which is beneficial to improving the attitude stability of the drying rack / rod during the lifting and lowering process, and the drying rack / rod can finally stay horizontally in the air.

[0012] In some embodiments, the helix direction of the first storage groove is opposite to the helix direction of the second storage groove.

[0013] With such a setting, when the two traction ropes are wound around the first winding shaft and the second winding shaft of the same spool respectively, and when the two traction ropes are released and separated from the first winding shaft and the second winding shaft of the same spool respectively, the forces exerted by the two traction ropes on the spool can maintain the force balance and attitude stability of the spool, and relieve the wear caused by eccentricity of the spool.

[0014] In some embodiments, both the first storage groove and the second storage groove are single-wire spiral grooves.

[0015] With such an arrangement, the first and second winding shafts of the same spool are respectively used for winding and releasing a single towing rope, reducing the possibility of entanglement and interference between the towing ropes.

[0016] In some embodiments, the number of spools is two, the two spools are respectively a first spool and a second spool, the driving assembly includes a power output part, and the transmission wheels of the first spool and the second spool are connected to the power output part.

[0017] With such an arrangement, the towing rope winding and releasing device can be used as a four-towing rope winder to be suitable for winding and releasing four towing ropes. The first spool and the second spool each provide two winding shafts to wind and release the towing ropes. The driving assembly only needs to connect two transmission wheels to distribute the power to the four winding shafts. Compared with the existing four-towing rope winder, the power distribution path is simplified and the power transmission efficiency is improved.

[0018] In some embodiments, the power output part is an output shaft, and the transmission wheels of the first spool and the second spool are respectively located on both sides of the output shaft and connected to the output shaft.

[0019] With such an arrangement, from the driving assembly to the four winding shafts, the power transmission path is shortened and the power loss is reduced. The output shaft distributes the power to the two spools through two transmission wheels. The layout and positioning relationship between the driving assembly and the two spools are similar to those of the existing double-towing rope winder, further simplifying the overall structural form of the towing rope winding and releasing device and facilitating its installation on the clothes dryer.

[0020] In some embodiments, the first spool and the second spool are symmetric about the equal division longitudinal section of the output shaft, and the equal division longitudinal section contains the axis of the output shaft and divides the output shaft into two equal parts.

[0021] With such an arrangement, the two towing ropes wound around the same spool are used as a group of towing ropes that can be synchronously wound and synchronously released. The driving assembly evenly distributes the power to the two spools through the output shaft, so that the two groups of towing ropes respectively apply equal forces to the drying rack / drying rod, enabling the drying rack / drying rod to maintain balance and perform vertical linear lifting and lowering movements in a stable posture.

[0022] In some embodiments, the output shaft is a worm, the transmission wheel of the first spool is a first gear, the transmission wheel of the second spool is a second gear, the driving assembly further includes a first reduction wheel and a second reduction wheel. The first reduction wheel includes a first worm gear meshing with the worm and a first reduction gear meshing with the first gear. The second reduction wheel includes a second worm gear meshing with the worm and a second reduction gear meshing with the second gear.

[0023] With such a setting, the power output by the driving component through the output shaft is decelerated and torque-increased by the first reduction wheel and the second reduction wheel, so that the first wire winding shaft and the second wire winding shaft can obtain a greater torque input while rotating at a smaller speed, thereby more easily winding the towing rope to lift a heavier drying rack / drying rod.

[0024] In some embodiments, the output shaft is a worm, the transmission wheel of the first wire winding shaft is a first worm gear meshing with the worm, and the transmission wheel of the second wire winding shaft is a second worm gear meshing with the worm.

[0025] With such a setting, the driving component directly distributes and transmits the power to the two wire winding shafts through the output shaft, further shortening the power transmission path and further improving the power transmission efficiency.

[0026] The clothes dryer provided by the utility model includes a towing rope winding and unwinding device. Description of the Drawings

[0027] Figure 1 It is a schematic perspective view of the towing rope winding and unwinding device according to an embodiment of the utility model;

[0028] Figure 2 It is a schematic partial structure view of the towing rope winding and unwinding device according to an embodiment of the utility model;

[0029] Figure 3 It is a schematic structure view of the wire winding shaft of the towing rope winding and unwinding device according to an embodiment of the utility model.

[0030] Description of the reference numerals: 100, towing rope winding and unwinding device; 10, wire winding shaft; 101, first wire winding shaft; 102, second wire winding shaft; 11, first wire winding shaft; 12, second wire winding shaft; 13, transmission wheel; 1301, first gear; 1302, second gear; 141, first wire storage groove; 142, second wire storage groove; 20, driving component; 211, power output part; 2110, output shaft; 212, motor; 221, first reduction wheel; 222, second reduction wheel; 30, housing component; 31, first wire passing hole; 32, second wire passing hole; 33, third wire passing hole; 34, fourth wire passing hole; 41, first towing rope; 42, second towing rope; 43, third towing rope; 44, fourth towing rope. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the protection scope of the utility model.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0033] Referring to Figures 1 to 2 , this utility model provides a traction rope winding and unwinding device 100, and also provides a clothes drying machine including the traction rope winding and unwinding device 100. As one of the important components of the main unit of the clothes drying machine, the traction rope winding and unwinding device 100 has the function of winding and releasing the traction rope. As the traction rope is wound by the traction rope winding and unwinding device 100, the clothes drying rack / rod is lifted upward, and as the traction rope is released by the traction rope winding and unwinding device 100, the clothes drying rack / rod is lowered, thereby achieving the purpose of changing the vertical height of the clothes drying rack / rod.

[0034] The traction rope winding and unwinding device 100 of this utility model includes a housing assembly 30, a wire winding assembly and a driving assembly 20. The wire winding assembly includes a wire winding shaft 10 rotatably installed in the housing assembly 30. The number of wire winding shafts 10 can be one or more. Each wire winding shaft 10 includes a first winding shaft 11, a transmission wheel 13 and a second winding shaft 12 coaxially arranged. The first winding shaft 11 and the second winding shaft 12 are respectively arranged at both ends of the transmission wheel 13. First storage grooves 141 and second storage grooves 142 are respectively arranged on the outer peripheral walls of the two. The first storage grooves 141 and the second storage grooves 142 extend spirally around the axis of the transmission wheel 13. The driving assembly 20 is installed in the housing assembly 30 and is connected to the transmission wheel 13 of each wire winding shaft 10.

[0035] The first winding shaft 11 and the second winding shaft 12 are respectively wound by two traction ropes. When the driving assembly 20 starts to operate and transmits power to the transmission wheel 13, the wire winding shaft 10 rotates around the axis of the transmission wheel 13, that is, the first winding shaft 11 and the second winding shaft 12 rotate synchronously around the axis of the transmission wheel 13. The driving assembly 20 changes the direction of the torque transmitted to the transmission wheel 13 to change the rotation direction of the wire winding shaft 10, so as to realize the synchronous winding of two traction ropes by the first winding shaft 11 and the second winding shaft 12 and the synchronous release of two traction ropes by the first winding shaft 11 and the second winding shaft 12.

[0036] The traction rope segments wound around the outer peripheral wall of the first winding shaft 11 are spirally received in the first storage groove 141, and the traction rope segments wound around the outer peripheral wall of the second winding shaft 12 are spirally received in the second storage groove 142. Since the transmission wheel 13 is located between the first winding shaft 11 and the second winding shaft 12, for the two traction ropes wound around the same winding shaft 10, whether they are respectively wound into the first storage groove 141 and the second storage groove 142 or respectively released from the first storage groove 141 and the second storage groove 142, the two traction ropes are located at both ends of the transmission wheel 13, thereby avoiding entanglement and interference between the two traction ropes.

[0037] Specifically, in some embodiments, both the first storage groove 141 and the second storage groove 142 are single-wire spiral grooves. The first winding shaft 11 is responsible for winding and releasing a single traction rope through the first storage groove 141, and the second winding shaft 12 is responsible for winding and releasing a single traction rope through the second storage groove 142. With such a setting, the same winding shaft 10 can only wind and release two traction ropes, further reducing the possibility of entanglement and interference between the two traction ropes wound around the same winding shaft 10, and ensuring the smooth lifting movement of the drying rack / drying rod.

[0038] Figure 3 Schematically shows the structure of a winding shaft 10. In some embodiments, the outer diameter of the first winding shaft 11 and the outer diameter of the second winding shaft 12 are both smaller than the outer diameter of the transmission wheel 13. Specifically, when a traction rope is wound around the outer peripheral wall of the first winding shaft 11, the outer diameter of the spiral rope segment of the traction rope located in the first storage groove 141 is smaller than the outer diameter of the transmission wheel 13; when the other traction rope is wound around the outer peripheral wall of the second winding shaft 12, the outer diameter of the spiral rope segment of the traction rope located in the second storage groove 142 is smaller than the outer diameter of the transmission wheel 13.

[0039] With such a setting, the transmission wheel 13 can prevent the traction rope wound and released by the first winding shaft 11 from being wrongly wound into the second storage groove 142, and prevent the traction rope wound and released by the second winding shaft 12 from being wrongly wound into the first storage groove 141, further reducing the possibility of entanglement and interference between the two traction ropes wound around the same winding shaft 10, and ensuring the smooth lifting movement of the drying rack / drying rod.

[0040] Optionally, refer to Figure 3, in some embodiments, the first winding shaft 11 and the second winding shaft 12 are symmetric about the equidistant cross-section of the transmission wheel 13. The equidistant cross-section refers to a plane perpendicular to the axial direction of the transmission wheel 13, and the transmission wheel 13 is cut into two coaxial parts by this plane equally. The helix directions of the first rope storage groove 141 and the second rope storage groove 142 can be the same, that is, both are left-handed threaded grooves or both are right-handed threaded grooves, or they can be opposite, that is, one of them is a left-handed threaded groove and the other is a right-handed threaded groove.

[0041] Particularly, when the first winding shaft 11 and the second winding shaft 12 are symmetric about the equidistant cross-section of the transmission wheel 13 and the helix directions of the first rope storage groove 141 and the second rope storage groove 142 are opposite, the shape change trends of the traction rope segments wound around the first winding shaft 11 and the traction rope segments wound around the second winding shaft 12 are symmetric about the equidistant cross-section. For example, in some cases, when the winding shaft 10 rotates and winds up two traction ropes, the spiral rope segments of the traction ropes wound around the first winding shaft 11 and the spiral rope segments of the traction ropes wound around the second winding shaft 12 extend away from the transmission wheel 13 respectively. When the winding shaft 10 rotates and releases the two traction ropes, the spiral rope segments of the traction ropes wound around the first winding shaft 11 and the spiral rope segments of the traction ropes wound around the second winding shaft 12 retract towards the transmission wheel 13 respectively; in other cases, when the winding shaft 10 rotates and winds up two traction ropes, the spiral rope segments of the traction ropes wound around the first winding shaft 11 and the spiral rope segments of the traction ropes wound around the second winding shaft 12 extend towards the transmission wheel 13 respectively. When the winding shaft 10 rotates and releases the two traction ropes, the spiral rope segments of the traction ropes wound around the first winding shaft 11 and the spiral rope segments of the traction ropes wound around the second winding shaft 12 retract away from the transmission wheel 13 respectively.

[0042] With such a setting, the forces exerted on the winding shaft 10 by the traction rope wound around the first winding shaft 11 and the traction rope wound around the second winding shaft 12 can enable the winding shaft 10 to maintain attitude stability to a certain extent, cancel out the deflection torques exerted on the winding shaft 10 by the two traction ropes respectively, reduce the inclination amplitude of the winding shaft 10, which is beneficial to alleviating the wear of the winding shaft 10 caused by the axis skew, thereby prolonging the service life of the winding shaft 10.

[0043] Figures 1 to 2Schematically shows a drawstring winding and unwinding device 100 applicable to four drawstrings. The number of spools 10 is two. The two spools 10 are respectively a first spool 101 and a second spool 102. The drive assembly 20 includes a power output portion 211. The drive wheels 13 of the first spool 101 and the second spool 102 are connected to the power output portion 211. The first spool 101 is responsible for winding and unwinding the first drawstring 41 and the second drawstring 42 respectively through its own first winding shaft 11 and second winding shaft 12. The second spool 102 is responsible for winding and unwinding the third drawstring 43 and the fourth drawstring 44 respectively through its own first winding shaft 11 and second winding shaft 12.

[0044] Further, the housing assembly 30 is provided with a first wire passing hole 31, a second wire passing hole 32, a third wire passing hole 33 and a fourth wire passing hole 34. The first wire passing hole 31 allows the first drawstring 41 wound around the first spool 101 to extend out so that the first drawstring 41 is connected to a drying rod / drying rack. The second wire passing hole 32 allows the second drawstring 42 wound around the first spool 101 to extend out so that the second drawstring 42 is connected to a drying rod / drying rack. The third wire passing hole 33 allows the third drawstring 43 wound around the second spool 102 to extend out so that the third drawstring 43 is connected to a drying rod / drying rack. The fourth wire passing hole 34 allows the fourth drawstring 44 wound around the second spool 102 to extend out so that the fourth drawstring 44 is connected to a drying rod / drying rack.

[0045] Further, Figures 1 to 2 The drive assembly 20 adopted by the shown drawstring winding and unwinding device 100 includes a motor 212. The power output portion 211 is a shaft 2110 connected to the output shaft of the motor 212. The drive wheels 13 of the first spool 101 and the second spool 102 are respectively located on both sides of the output shaft 2110 and connected to the output shaft 2110. With such a setting, the drawstring winding and unwinding device 100 only needs one motor 212 and one output shaft 2110 to drive the two spools 10 to rotate, so as to realize the winding and unwinding of the four drawstrings. Compared with the existing scheme for winding and unwinding four drawstrings, the power distribution path of the drive assembly 20 is simplified, the power transmission efficiency is improved, the number of drive assemblies 20 is reduced, and the cost is cut.

[0046] Optionally, the first spool 101 and the second spool 102 are symmetric about the equal - division longitudinal section of the output shaft 2110. The equal - division longitudinal section contains the axis of the output shaft 2110, and the output shaft 2110 is bisected by the equal - division longitudinal section. With such a setting, the overall structure of the drawstring winding and unwinding device 100 is more regular and compact.

[0047] Optionally, refer to Figure 2In some embodiments, the output shaft 2110 is a worm, the transmission wheel 13 of the first winding shaft 101 is a first gear 1301, and the transmission wheel 13 of the second winding shaft 102 is a second gear 1302. The driving assembly 20 also includes a first reduction wheel 221 and a second reduction wheel 222 rotatably mounted in the housing assembly 30. The first reduction wheel 221 includes a first worm wheel meshing with the worm and a first reduction gear meshing with the first gear 1301. The first worm wheel is coaxial with the first reduction gear and fixedly connected. The second reduction wheel 222 includes a second worm wheel meshing with the worm and a second reduction gear meshing with the second gear 1302. The second worm wheel is coaxial with the second reduction gear and fixedly connected. The first reduction wheel 221 and the second reduction wheel 222 are symmetrically arranged on both sides of the worm with respect to the equally divided longitudinal section.

[0048] It can be seen that the torque of the output shaft 2110 is first transmitted to the first reduction wheel 221, and then the first winding shaft 101 can obtain the torque input from the first reduction wheel 221; the torque of the output shaft 2110 is first transmitted to the second reduction wheel 222, and then the second winding shaft 102 can obtain the torque input from the second reduction wheel 222.

[0049] With such an arrangement, the power generated by the motor 212 is adjusted through the first reduction wheel 221 and the second reduction wheel 222, so that the rotation speeds of the first winding shaft 101 and the second winding shaft 102 are reduced, but a greater torque input is obtained, so that the first winding shaft 101 and the second winding shaft 102 can drive a larger load, which is suitable for lifting and lowering heavier clothes-drying rods / drying racks. Even if there are more clothes hanging on the clothes-drying rods / drying racks, the traction rope winding and releasing device 100 can still lift and lower the clothes-drying rods / drying racks and the clothes. In addition, compared with the existing solution of winding and releasing four traction ropes, the drive assembly 20 has fewer transmission levels and less power loss, and thus has higher transmission efficiency.

[0050] In other embodiments, the first reduction wheel 221 and the second reduction wheel 222 are eliminated, the output shaft 2110 is a worm, the transmission wheel 13 of the first winding shaft 101 is a first worm wheel meshing with the worm, and the transmission wheel 13 of the second winding shaft 102 is a second worm wheel meshing with the worm. Such an arrangement further improves the transmission efficiency of the drive assembly 20, and the torque of the output shaft 2110 is directly transmitted to the first winding shaft 101 and the second winding shaft 102, with less power loss.

[0051] It can be understood that in other embodiments, the traction rope winding and unwinding device 100 can also be adapted to wind and release a greater number of traction ropes. That is, the number of winding shafts 10 in the winding assembly is not limited to two, but can also be three, four, or more. When the number of winding shafts 10 is three, the number of winding axles is six, so as to be able to wind and release six traction ropes respectively. When the number of winding shafts 10 is four, the number of winding axles is eight, so as to be able to wind and release eight traction ropes respectively. That is to say, in the winding assembly, the total number of winding axles is twice the total number of winding shafts 10.

[0052] Figure 2 In the shown traction rope winding and unwinding device, the connection manner between the driving assembly and the transmission wheels of the winding shafts is similar to that of the existing double-traction-rope winder. In the existing double-traction-rope winder, the winding assembly includes two winding axles and two transmission wheels. The two transmission wheels are respectively coaxially connected to the two winding axles. The driving assembly is connected to the two transmission wheels to transmit torque to the two winding axles. The two winding axles are respectively responsible for winding and releasing two traction ropes. Obviously, the traction rope winding and unwinding device of the present utility model realizes the doubling of the number of winding axles, so as to be adapted to wind and release twice the number of traction ropes.

[0053] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0054] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present utility model, rather than to limit the present utility model. As long as it is within the scope of the essential spirit of the present utility model, appropriate changes and variations made to the above embodiments fall within the scope claimed by the present utility model.

Claims

1. A traction rope winding and releasing device, characterized in that: The invention comprises a winding assembly and a driving assembly (20), wherein the winding assembly comprises at least one winding shaft (10), wherein the winding shaft (10) comprises a first winding shaft (11), a transmission wheel (13) and a second winding shaft (12) which are coaxially arranged; the first winding shaft (11) and the second winding shaft (12) are respectively arranged at two ends of the transmission wheel (13), and are respectively provided with a first wire storage groove (141) and a second wire storage groove (142) which surround the axis of the transmission wheel (13); and the driving assembly (20) is connected to the transmission wheel (13) of each winding shaft (10).

2. The traction rope winding and releasing device according to claim 1, characterized in that: The outer diameter of the first winding shaft (11) and the outer diameter of the second winding shaft (12) are both smaller than the outer diameter of the transmission wheel (13).

3. The traction rope winding and releasing device according to claim 1, characterized in that: The first winding shaft (11) and the second winding shaft (12) are symmetrical about an equally divided cross section of the transmission wheel (13), wherein the equally divided cross section is perpendicular to the axial direction of the transmission wheel (13) and divides the transmission wheel (13) into two equal parts.

4. The traction rope winding and releasing device according to claim 1, characterized in that: The rotation direction of the first wire storage groove (141) is opposite to the rotation direction of the second wire storage groove (142); and / or, the first wire storage groove (141) and the second wire storage groove (142) are both single-wire spiral grooves.

5. The traction rope winding and unwinding device according to any one of claims 1 to 4, characterized in that: The number of the winding shafts (10) is two, and the two winding shafts (10) are respectively a first winding shaft (101) and a second winding shaft (102); the driving component (20) comprises a power output part (211), and the transmission wheel (13) of the first winding shaft (101) and the transmission wheel (13) of the second winding shaft (102) are connected to the power output part (211).

6. The traction rope winding and releasing device according to claim 5, characterized in that: The power output part (211) is an output shaft (2110), and the transmission wheel (13) of the first winding shaft (101) and the transmission wheel (13) of the second winding shaft (102) are respectively located on both sides of the output shaft (2110) and connected to the output shaft (2110).

7. The traction rope winding and releasing device according to claim 6, characterized in that: The first winding shaft (101) and the second winding shaft (102) are symmetrical about a bisecting longitudinal section of the output shaft (2110), wherein the bisecting longitudinal section includes the axis of the output shaft (2110) and divides the output shaft (2110) into two equal parts.

8. The traction rope winding and releasing device according to claim 6, characterized in that: The output shaft (2110) is a worm, the transmission wheel (13) of the first winding shaft (101) is a first gear (1301), and the transmission wheel (13) of the second winding shaft (102) is a second gear (1302). The driving component (20) further includes a first reduction wheel (221) and a second reduction wheel (222). The first reduction wheel (221) includes a first worm wheel meshing with the worm and a first reduction gear meshing with the first gear (1301), and the second reduction wheel (222) includes a second worm wheel meshing with the worm and a second reduction gear meshing with the second gear (1302).

9. The traction rope winding and releasing device according to claim 6, characterized in that: The output shaft (2110) is a worm, the transmission wheel (13) of the first winding shaft (101) is a first worm wheel meshing with the worm, and the transmission wheel (13) of the second winding shaft (102) is a second worm wheel meshing with the worm.

10. A clothes drying machine, characterized in that: It comprises a traction rope winding and unwinding device as described in any one of claims 1 to 9.

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