Lifting driving device and clothes airing machine

Abstract

The invention discloses a lifting driving device which comprises a power source used for outputting power; the transmission assembly comprises a transmission mechanism and a gear shifting mechanism, the transmission mechanism comprises a transmission input end, a first transmission output end and a second transmission output end, the transmission input end is connected with the power source, and the gear shifting mechanism is used for driving the transmission mechanism to shift gears; the first execution unit is connected with the first transmission output end; the second execution unit is connected with the second transmission output end; wherein the gear shifting mechanism can drive the transmission mechanism to be switched among a first gear, a second gear and a third gear, and when the gear shifting mechanism is at the first gear, the transmission mechanism drives the first execution unit and the second execution unit to operate in the same direction; at the second gear, the transmission mechanism independently drives the first execution unit to operate; and at the third gear, the transmission mechanism independently drives the second execution unit to operate. According to the scheme, one motor is omitted, the cost of the clothes airing machine is reduced, and the occupied space of the clothes airing machine is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of clothes drying machines, and in particular to a lifting drive device and a clothes drying machine. Background Art

[0002] Some existing clothes drying machines use double drying rods. Compared with a single drying rod, double drying rods can double the drying space and meet more drying needs of users. However, in the existing double drying rod clothes drying machines, two independent traction machines are required to control the lifting and lowering of the two drying rods respectively. Two traction machines mean that two motors are required, which leads to the defects of high cost and large space occupation of the clothes drying machine. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a lifting drive device and a clothes drying machine, which can solve the above-mentioned problems existing in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solutions:

[0005] On the one hand, a lifting drive device is provided, comprising:

[0006] A power source, used for outputting power;

[0007] A transmission assembly, comprising a transmission mechanism and a shifting mechanism, wherein the transmission mechanism comprises a transmission input end, a first transmission output end and a second transmission output end, the transmission input end is connected to the power source, and the shifting mechanism is used to drive the transmission mechanism to shift gears;

[0008] A first execution unit, connected to the first transmission output end;

[0009] A second execution unit, connected to the second transmission output end;

[0010] Among them, the shift mechanism can drive the transmission mechanism to switch between the first gear, the second gear and the third gear. In the first gear, the transmission mechanism drives the first execution unit and the second execution unit to operate in the same direction; in the second gear, the transmission mechanism drives the first execution unit alone to operate; in the third gear, the transmission mechanism drives the second execution unit alone to operate.

[0011] Optionally, the shift mechanism may also drive the transmission mechanism to switch to a fourth gear. In the fourth gear, the transmission mechanism drives the first execution unit and the second execution unit to operate in reverse.

[0012] Optionally, the transmission mechanism includes an input shaft assembly, a first output shaft assembly and a second output shaft assembly, the transmission input end is arranged on the output shaft assembly, the first transmission output end is arranged on the first output shaft assembly, and the second transmission output end is arranged on the second output shaft assembly; the first output shaft assembly and the second output shaft assembly are respectively connected to the input shaft assembly in transmission connection, so that the input shaft assembly respectively drives the first output shaft assembly and the second output shaft assembly to operate.

[0013] Optionally, the first output shaft assembly includes a first rotating shaft, a first gear sleeve and a first clutch sleeve, the first gear sleeve is meshed with the input shaft assembly, the first gear sleeve can be rotatably sleeved on the first rotating shaft, the first clutch sleeve can be slidably sleeved on the first rotating shaft, the shifting mechanism can drive the first clutch sleeve to engage with or disengage from the first gear sleeve, and when the first clutch sleeve is engaged with the first gear sleeve, the first gear sleeve can drive the first rotating shaft to rotate;

[0014] The second output shaft assembly includes a second rotating shaft, a second gear sleeve and a second clutch sleeve. The second gear sleeve is meshed with the input shaft assembly. The second gear sleeve can be rotatably sleeved on the second rotating shaft. The second clutch sleeve can be slidably sleeved on the second rotating shaft. The shifting mechanism can drive the second clutch sleeve to engage or disengage from the second gear sleeve. When the second clutch sleeve is engaged with the second gear sleeve, the second gear sleeve can drive the second rotating shaft to rotate.

[0015] Optionally, the input shaft assembly includes an input gear, the first output shaft assembly and the second output shaft assembly are symmetrically arranged on both sides of the input gear, and the input gear can directly drive the first gear sleeve and the second gear sleeve to rotate in opposite directions;

[0016] It also includes a reversing transmission shaft assembly. When in the first gear, the reversing transmission shaft assembly is transmission-connected with the first output shaft assembly and the second output shaft assembly. The first output shaft assembly can drive the second rotating shaft to rotate in the same direction through the reversing transmission shaft assembly, so that the transmission mechanism drives the first execution unit and the second execution unit to operate in the same direction.

[0017] Optionally, the reversing transmission shaft assembly includes a first reversing gear, a second reversing gear, a third rotating shaft and a third clutch sleeve, the first reversing gear is fixedly sleeved on the third rotating shaft, the second reversing gear is rotatably sleeved on the third rotating shaft, and the third clutch sleeve is slidably sleeved on the third rotating shaft;

[0018] The first output shaft assembly also includes a first transmission gear meshed with the first reversing gear, and the second output shaft assembly also includes a second transmission gear meshed with the second reversing gear. The shifting mechanism can drive the third clutch sleeve to engage or disengage from the second reversing gear. When the third clutch sleeve is engaged with the second reversing gear, the second clutch sleeve is separated from the second gear sleeve. The first transmission gear can drive the second transmission gear to rotate through the reversing transmission assembly, thereby driving the second rotating shaft to rotate.

[0019] Optionally, the first transmission gear is fixedly connected to the first rotating shaft;

[0020] Alternatively, the first transmission gear is fixedly connected to the first gear sleeve.

[0021] Optionally, the second transmission gear is fixedly connected to the second rotating shaft.

[0022] Optionally, the first gear sleeve has a first clamping sleeve, the inner ring of the first clamping sleeve is provided with a first clamping groove, the first clutch sleeve has a first clamping ring, the outer ring of the first clamping ring is provided with a first clamping block, and when the first clamping block is clamped with the first clamping groove, the first clutch sleeve is engaged with the first gear sleeve;

[0023] And / or, the second gear sleeve has a second clamping sleeve, the inner ring of the second clamping sleeve is provided with a second clamping groove, the second clutch sleeve has a second clamping ring, the outer ring of the second clamping ring is provided with a second clamping block, and when the second clamping block is engaged with the second clamping groove, the second clutch sleeve is engaged with the second gear sleeve;

[0024] And / or, the second reversing gear has a third sleeve, the inner ring of the third sleeve is provided with a third slot, the third clutch sleeve has a third clamping ring, the outer ring of the third clamping ring is provided with a third clamping block, and when the third clamping block is engaged with the third slot, the third clutch sleeve is engaged with the second reversing gear.

[0025] Optionally, the shift mechanism includes a shift drive and a shift frame, the shift frame having a first shift rod, a second shift rod and a third shift rod, the first clutch sleeve is provided with a first ring groove, the second clutch sleeve is provided with a second ring groove, the third clutch sleeve is provided with a third ring groove, the first shift rod extends into the first ring groove, the second shift rod extends into the second ring groove, and the third shift rod extends into the third ring groove, and the shift frame is driven to translate by the shift drive, so that the shift frame synchronously pushes the first clutch sleeve, the second clutch sleeve and the third clutch sleeve to translate.

[0026] Optionally, the shift driver includes a shift motor and a shift worm, the shift rack is provided with a sliding pin meshing with the shift worm, and when the shift motor drives the shift worm to rotate, the shift worm can push the shift rack to translate through the sliding pin.

[0027] Optionally, the shift mechanism further includes a plurality of position sensors, and the position sensors are used to sense the position of the shift rack.

[0028] Optionally, the transmission assembly includes a box housing, the box housing includes a transmission base and a transmission upper cover, the transmission base and the transmission upper cover enclose a transmission installation space, and the transmission mechanism is installed in the transmission installation space;

[0029] The shift mechanism is installed on the transmission upper cover, and a hollow hole is provided on the transmission upper cover, and the first shift rod, the second shift rod and the third shift rod extend into the transmission installation space through the hollow hole to cooperate with the transmission mechanism.

[0030] Optionally, the transmission assembly further comprises a protective cover, which is mounted on the transmission upper cover and covers the shift mechanism.

[0031] Optionally, the first execution unit and the second execution unit respectively include two groups of rope winders symmetrically arranged, the first transmission output end is transmission-connected to the two groups of rope winders in the first execution unit, and the second transmission output end is transmission-connected to the two groups of rope winders in the second execution unit.

[0032] On the other hand, a clothes drying machine is provided, comprising the above-mentioned lifting drive device.

[0033] The beneficial effects of the present application are as follows: the present invention provides a lifting drive device which can be applied to a clothes drying machine, and comprises two execution units which can be respectively connected to two clothes drying rods of the clothes drying machine to realize the function of controlling the lifting of the two clothes drying rods.

[0034] The lifting drive device of the present invention is provided with a transmission assembly with a gear shifting function. When only one power source is used, the lifting and lowering of any execution unit can be independently controlled by switching the gears, or the lifting and lowering of the drying rod execution unit can be synchronously controlled, thus achieving the same function that can only be achieved by using two motors in the prior art. Therefore, the present invention saves the configuration of one motor, reduces the cost of the clothes drying machine, and reduces the space occupied by the clothes drying machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present application is further described in detail below based on the drawings and embodiments.

[0036] Figure 1This is a schematic diagram of the structure of the lifting drive device described in the embodiment of the present application;

[0037] Figure 2 This is a schematic diagram of the internal structure of the lifting drive device described in the embodiment of the present application;

[0038] Figure 3 This is a schematic diagram of the structure of the connection between the power source and the transmission assembly described in the embodiment of the present application;

[0039] Figure 4 for Figure 3 One of the exploded schematic diagrams of the structure shown;

[0040] Figure 5 for Figure 3 The second exploded schematic diagram of the structure shown;

[0041] Figure 6 This is a schematic structural diagram of the first output shaft assembly according to an embodiment of the present application;

[0042] Figure 7 This is an exploded schematic diagram of the first output shaft assembly according to an embodiment of the present application;

[0043] Figure 8 This is a schematic structural diagram of the second output shaft assembly in an embodiment of the present application;

[0044] Fig. 9 This is an exploded schematic diagram of the second output shaft assembly according to an embodiment of the present application;

[0045] Fig.10 This is a schematic diagram of the structure of the reversing transmission shaft assembly according to an embodiment of the present application;

[0046] Fig.11 This is an exploded schematic diagram of the reversing transmission shaft assembly described in an embodiment of the present application;

[0047] Fig.12 It is a structural schematic diagram of the shift mechanism described in the embodiment of the present application;

[0048] Fig.13 An exploded schematic diagram of the shift mechanism described in the embodiment of the present application;

[0049] Fig.14 This is a state diagram of the transmission mechanism in the embodiment of the present application being in the first gear position;

[0050] Fig.15 for Fig.14 A top view of the transmission mechanism shown;

[0051] Fig.16 This is a state diagram of the transmission mechanism in the embodiment of the present application being in the second gear position;

[0052] Fig.17 for Fig.16 A top view of the transmission mechanism shown;

[0053] Fig.18 This is a state diagram of the transmission mechanism in the embodiment of the present application being in the third gear position;

[0054] Fig.19 for Fig.18 A top view of the transmission mechanism shown;

[0055] Fig. 20 This is a state diagram of the transmission mechanism in the embodiment of the present application being in the fourth gear;

[0056] Fig.21 for Fig. 20 A top view of the transmission mechanism is shown.

[0057] In the figure:

[0058] 1. Power source; 2. Transmission assembly; 21. Transmission mechanism; 211. First output shaft assembly; 2111. First rotating shaft; 2112. First gear sleeve; 21121. First slot; 2113. First clutch sleeve; 21131. First block; 21132. First ring groove; 2114. First transmission gear; 212. Second output shaft assembly; 2121. Second rotating shaft; 2122. Second gear sleeve; 21221. Second slot; 2123. Second clutch sleeve; 21231. Second block; 2124. Second transmission gear; 213. Reversing transmission shaft assembly; 2131. Third rotating shaft; 2132. First reversing gear; 21 33. second reversing gear; 21331. third card slot; 2134. third clutch sleeve; 21341. third card block; 21342. third ring groove; 214. input shaft assembly; 22. shift mechanism; 221. shift rack; 2211. first shift lever; 2212. second shift lever; 2213. third shift lever; 2214. slide pin; 222. shift driver; 2221. shift motor; 2222. shift worm; 223. position sensor; 23. box housing; 231. transmission base; 232. transmission upper cover; 2321. hollow hole; 233. protective cover; 3. first execution unit; 31. rope winder; 4. second execution unit. DETAILED DESCRIPTION

[0059] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0060] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] Some existing clothes drying machines use double drying rods. Compared with a single drying rod, double drying rods can double the drying space and meet more drying needs of users. However, in the existing double drying rod clothes drying machines, two independent traction machines are required to control the lifting and lowering of the two drying rods respectively. Two traction machines mean that two motors are required, which leads to the defects of high cost and large space occupation of the clothes drying machine.

[0063] In order to overcome the above technical problems, Figure 1-Figure 21 As shown, this embodiment provides a lifting drive device, including:

[0064] A power source 1, used for outputting power;

[0065] The transmission assembly 2 includes a transmission mechanism 21 and a shift mechanism 22, wherein the transmission mechanism 21 includes a transmission input end, a first transmission output end and a second transmission output end, the transmission input end is connected to the power source 1, and the shift mechanism 22 is used to drive the transmission mechanism 21 to shift;

[0066] A first execution unit 3, connected to the first transmission output end;

[0067] A second execution unit 4, connected to the second transmission output end;

[0068] Among them, the shift mechanism 22 can drive the transmission mechanism 21 to switch between the first gear, the second gear and the third gear. In the first gear, the transmission mechanism 21 drives the first execution unit 3 and the second execution unit 4 to operate in the same direction; in the second gear, the transmission mechanism 21 drives the first execution unit 3 to operate alone; in the third gear, the transmission mechanism 21 drives the second execution unit 4 to operate alone.

[0069] The lifting drive device provided in this embodiment can be applied to a clothes drying machine, and includes two execution units, which can be respectively connected to two clothes drying rods of the clothes drying machine to realize the function of controlling the lifting of the two clothes drying rods.

[0070] Among them, the power source 1 is the basis of the entire driving device and is responsible for providing necessary power output. In the application of the clothes drying machine, the power source 1 is usually selected as a motor because it can provide stable and controllable power.

[0071] The transmission assembly 2 is the core part of the present solution, and includes a transmission mechanism 21 and a shift mechanism 22 .

[0072] The first execution unit 3 and the second execution unit 4 are bridges connecting the clothes drying rod and the transmission mechanism 21, and are responsible for converting the output of the transmission mechanism 21 into the lifting and lowering action of the clothes drying rod. They are generally in the form of a rope winder 31. There are two execution units in this solution, which are respectively connected to the two clothes drying rods of the clothes drying machine to realize independent or synchronous control of the two clothes drying rods.

[0073] The transmission mechanism 21 is designed with a transmission input end, a first transmission output end and a second transmission output end. The transmission input end is connected to the power source 1 to receive the output of the power source 1; the first transmission output end and the second transmission output end are respectively used to connect the first execution unit 3 and the second execution unit 4 to realize the function of driving the operation of the first execution unit 3 and the second execution unit 4 respectively. The specific connection method can be set according to the form of the first execution unit 3 and the second execution unit 4, such as but not limited to gear transmission connection method, worm gear transmission connection method, gear chain transmission connection method and the like.

[0074] The gear shift mechanism 22 is used to drive the transmission mechanism 21 to switch between different gears to achieve different functional requirements. Specifically, the transmission assembly 2 is provided with three gears: a first gear, a second gear and a third gear.

[0075] In the first gear, the transmission mechanism 21 can simultaneously drive the first execution unit 3 and the second execution unit 4 to operate in the same direction, which is suitable for scenarios where two clothes-drying rods need to be raised and lowered at the same time; in the second gear, the transmission mechanism 21 only drives the first execution unit 3 to operate, which is suitable for scenarios where only one clothes-drying rod needs to be raised and lowered; in the third gear, the transmission mechanism 21 only drives the second execution unit 4 to operate, which is also suitable for scenarios where only another clothes-drying rod needs to be raised and lowered.

[0076] Based on the lifting drive device provided in this embodiment, by designing a transmission assembly 2 with a shifting function, this solution realizes independent or synchronous control of two clothes drying rods while using only one power source 1, which avoids the need to use two motors in the prior art, thereby reducing the cost of the clothes drying machine. At the same time, since the number of motors is reduced, this solution saves space in the overall design of the clothes drying machine, which is particularly important for the design of miniaturized and compact clothes drying machines. Through the shifting mechanism, users can choose the lifting method of the clothes drying rod according to actual needs. Whether it is necessary to lift two clothes drying rods at the same time or only one of them, this solution can meet the needs.

[0077] In one embodiment, the shift mechanism 22 can also drive the transmission mechanism 21 to switch to a fourth gear. In the fourth gear, the transmission mechanism 21 drives the first execution unit 3 and the second execution unit 4 to operate in reverse.

[0078] By driving the first execution unit 3 and the second execution unit 4 to reverse, it is possible to control one of the drying rods to rise and the other to fall at the same time. Therefore, the addition of the fourth gear makes the functions of the clothes drying machine more diverse. In some specific scenarios, users may need the two drying rods to rise and fall in opposite directions. For example, when the clothes drying space is limited, one drying rod needs to rise to make room while the other drying rod needs to fall to hang new clothes. The reverse operation function of the fourth gear just meets this demand.

[0079] In one embodiment, the transmission mechanism 21 includes an input shaft assembly 214, a first output shaft assembly 211 and a second output shaft assembly 212, the transmission input end is arranged on the output shaft assembly, the first transmission output end is arranged on the first output shaft assembly 211, and the second transmission output end is arranged on the second output shaft assembly 212; the first output shaft assembly 211 and the second output shaft assembly 212 are respectively connected to the input shaft assembly 214 in transmission connection, so that the input shaft assembly 214 drives the first output shaft assembly 211 and the second output shaft assembly 212 to operate respectively.

[0080] In this embodiment, the transmission mechanism 21 is cleverly designed to include an input shaft assembly 214, a first output shaft assembly 211 and a second output shaft assembly 212, wherein the transmission input end is arranged at the input shaft assembly 214, and the first transmission output end and the second transmission output end are respectively arranged at the first output shaft assembly 211 and the second output shaft assembly 212. This design enables the input shaft assembly 214 to drive the first output shaft assembly 211 and the second output shaft assembly 212 to operate respectively.

[0081] Regarding the transmission connection mode between the input shaft assembly 214 and the first output shaft assembly 211 and the second output shaft assembly 212, gear transmission connection or worm gear transmission connection is preferred. These two transmission modes have the advantages of good stability and high precision.

[0082] In one embodiment, if Figure 6 and Figure 7 As shown, the first output shaft assembly 211 includes a first rotating shaft 2111, a first gear sleeve 2112 and a first clutch sleeve 2113. The first gear sleeve 2112 is meshed with the input shaft assembly 214. The first gear sleeve 2112 can be rotatably sleeved on the first rotating shaft 2111. The first clutch sleeve 2113 can be slidably sleeved on the first rotating shaft 2111. The shift mechanism 22 can drive the first clutch sleeve 2113 to engage with or disengage from the first gear sleeve 2112. When the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, the first gear sleeve 2112 can drive the first rotating shaft 2111 to rotate.

[0083] like Figure 8 and Fig. 9 As shown, the second output shaft assembly 212 includes a second rotating shaft 2121, a second gear sleeve 2122 and a second clutch sleeve 2123. The second gear sleeve 2122 is meshed with the input shaft assembly 214. The second gear sleeve 2122 can be rotatably sleeved on the second rotating shaft 2121. The second clutch sleeve 2123 can be slidably sleeved on the second rotating shaft 2121. The shifting mechanism 22 can drive the second clutch sleeve 2123 to engage or disengage from the second gear sleeve 2122. When the second clutch sleeve 2123 is engaged with the second gear sleeve 2122, the second gear sleeve 2122 can drive the second rotating shaft 2121 to rotate.

[0084] Specifically, in the first output shaft assembly 211, the first transmission output end is arranged on the first rotating shaft 2111, that is, when the first rotating shaft 2111 rotates, it can drive the first execution unit 3 to operate. The first gear sleeve 2112 can be rotatably sleeved on the first rotating shaft 2111, and the first gear sleeve 2112 is meshed with the input shaft assembly 214; and the first clutch sleeve 2113 can be slidably sleeved on the first rotating shaft 2111, that is, it can only move axially relative to the first rotating shaft 2111. When the power source 1 starts to drive the input shaft assembly 214 to operate, the input shaft assembly 214 directly drives the first gear sleeve 2112 to rotate; when the first clutch sleeve 2113 slides to the position engaged with the first gear sleeve 2112, the rotating first gear sleeve 2112 will drive the first rotating shaft 2111 to rotate through the first clutch sleeve 2113, thereby realizing the operation of the first execution unit 3.

[0085] Similarly, in the second output shaft assembly 212, the second transmission output end is arranged on the second rotating shaft 2121, that is, when the second rotating shaft 2121 rotates, it can drive the second execution unit 4 to operate. The second gear sleeve 2122 can be rotatably sleeved on the second rotating shaft 2121, and the second gear sleeve 2122 is meshed with the input shaft assembly 214; and the second clutch sleeve 2123 can be slidably sleeved on the second rotating shaft 2121, that is, it can only move axially relative to the second rotating shaft 2121. When the power source 1 is started to drive the input shaft assembly 214 to operate, the input shaft assembly 214 directly drives the second gear sleeve 2122 to rotate; when the second clutch sleeve 2123 slides to the position engaged with the second gear sleeve 2122, the rotating second gear sleeve 2122 will drive the second rotating shaft 2121 to rotate through the second clutch sleeve 2123, thereby realizing the operation of the second execution unit 4.

[0086] In this embodiment, the engagement and disengagement mechanism of the clutch sleeve and the gear sleeve makes the power transmission process highly flexible and controllable, and the first execution unit 3 and the second execution unit 4 can be driven independently or synchronously through the precise control of the shift mechanism 22. Therefore, this embodiment has the advantages of high flexibility and good controllability.

[0087] In one embodiment, referring to Fig.15 The input shaft assembly 214 includes an input gear, the first output shaft assembly 211 and the second output shaft assembly 212 are symmetrically arranged on both sides of the input gear, and the input gear can directly drive the first gear sleeve 2112 and the second gear sleeve 2122 to rotate in opposite directions;

[0088] It also includes a reversing transmission shaft assembly 213. When in the first gear, the reversing transmission shaft assembly 213 is connected to the first output shaft assembly 211 and the second output shaft assembly 212. The first output shaft assembly 211 can drive the second rotating shaft 2121 to rotate in the same direction through the reversing transmission shaft assembly 213, so that the transmission mechanism 21 drives the first execution unit 3 and the second execution unit 4 to operate in the same direction.

[0089] The input shaft assembly 214 is generally also provided with a coupling for connecting the input gear to the power source 1 , so that the power source 1 can drive the input gear to rotate.

[0090] The first output shaft assembly 211 and the second output shaft assembly 212 are symmetrically arranged on both sides of the input gear. This layout not only ensures the balance of the structure, but also enables the input gear to directly and efficiently drive the first gear sleeve 2112 and the second gear sleeve 2122 to rotate. However, in the symmetrical structure, when the input gear rotates, it can only directly drive the first gear sleeve 2112 and the second gear sleeve 2122 to rotate in the opposite direction. When the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, and the second clutch sleeve 2123 is engaged with the second gear sleeve 2122, the driving effect achieved is that the first rotating shaft 2111 and the second rotating shaft 2121 rotate in the opposite direction, that is, the first execution unit 3 and the second execution unit 4 rotate in the opposite direction.

[0091] On the basis of the above symmetrical arrangement of the first output shaft assembly 211 and the second output shaft assembly 212, in order to realize the function of the first output shaft assembly 211 and the second output shaft assembly 212 running in the same direction, a reversing transmission shaft assembly 213 is further provided in this embodiment. In the first gear, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, that is, the first rotating shaft 2111 is driven to rotate by the first gear sleeve 2112; at the same time, the second clutch sleeve 2123 is separated from the second gear sleeve 2122, and the reversing transmission shaft assembly 213 is transmission-connected to the first output shaft assembly 211 and the second output shaft assembly 212, so that the first output shaft assembly 211 can indirectly drive the second rotating shaft 2121 to rotate through the reversing transmission shaft assembly 213, and finally realize the purpose of driving the second rotating shaft 2121 to rotate in the same direction as the second rotating shaft 2121.

[0092] In summary, in this embodiment, the symmetrical distribution of the first output shaft assembly 211 and the second output shaft assembly 212 achieves structural balance, while improving the compactness of the overall structure of the transmission mechanism 21. This compactness helps save space and improve the rationality of the overall layout, which is particularly important in application scenarios where space is limited. At the same time, by introducing the reversing transmission shaft assembly 213, the transmission mechanism 21 can not only achieve reverse rotation power transmission between the two output shaft assemblies, but also achieve co-directional rotation when necessary. This flexibility enables the transmission mechanism 21 to adapt to more diverse application scenarios and needs.

[0093] In specific implementation, preferably, the input gear and the first gear sleeve 2112 and the second gear sleeve 2122 are all configured as bevel gear structures. The bevel gear structure can realize the vertical setting of the gear transmission shaft, which is more conducive to the compact design of the entire lifting drive device and convenient for its layout in the main unit of the clothes drying machine.

[0094] In other embodiments, the first output shaft assembly 211 and the second output shaft assembly 212 may also be arranged on the same side of the input gear, which can enable the input gear to directly drive the first gear sleeve 2112 and the second gear sleeve 2122 to rotate in the same direction, and enable the input gear to directly drive the first rotating shaft 2111 and the second rotating shaft 2121 to rotate in the same direction when the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, and the second clutch sleeve 2123 is engaged with the second gear sleeve 2122.

[0095] In one embodiment, referring to Figure 10-11 The reversing transmission shaft assembly 213 includes a first reversing gear 2132, a second reversing gear 2133, a third rotating shaft 2131 and a third clutch sleeve 2134. The first reversing gear 2132 is fixedly sleeved on the third rotating shaft 2131, the second reversing gear 2133 is rotatably sleeved on the third rotating shaft 2131, and the third clutch sleeve 2134 is slidably sleeved on the third rotating shaft 2131;

[0096] The first output shaft assembly 211 also includes a first transmission gear 2114 meshed with the first reversing gear 2132, and the second output shaft assembly 212 also includes a second transmission gear 2124 meshed with the second reversing gear 2133. The shifting mechanism 22 can drive the third clutch sleeve 2134 to engage or disengage from the second reversing gear 2133. When the third clutch sleeve 2134 is engaged with the second reversing gear 2133, the second clutch sleeve 2123 is separated from the second gear sleeve 2122. The first transmission gear 2114 can drive the second transmission gear 2124 to rotate through the reversing transmission assembly, thereby driving the second rotating shaft 2121 to rotate.

[0097] The first reversing gear 2132 is fixedly sleeved on the third rotating shaft 2131, which means that it rotates synchronously with the third rotating shaft 2131 without relative motion. The second reversing gear 2133 is rotatably sleeved on the third rotating shaft 2131, which means that it can rotate freely on the third rotating shaft 2131 without having to keep synchronization with the third rotating shaft 2131. The third clutch sleeve 2134 is designed to slide along the third rotating shaft 2131, and its position determines whether it can engage with the second reversing gear 2133, thereby controlling the rotation state of the second reversing gear 2133. Specifically, when the third clutch sleeve 2134 is engaged with the second reversing gear 2133, the third rotating shaft 2131 will drive the second reversing gear 2133 to rotate synchronously through the third clutch sleeve 2134. When the third clutch sleeve 2134 is separated from the second reversing gear 2133, the third rotating shaft 2131 can rotate independently relative to the second reversing gear 2133.

[0098] In addition, the design also involves two output shaft components: the first output shaft component 211 includes a first transmission gear 2114 meshed with the first reversing gear 2132. When the first rotating shaft 2111 rotates, it drives the first transmission gear 2114 to rotate through the meshing relationship. The second output shaft component 212 includes a second transmission gear 2124 meshed with the second reversing gear 2133. When the second reversing gear 2133 rotates, it drives the second transmission gear 2124 to rotate through the meshing relationship, thereby driving the second rotating shaft 2121 to rotate.

[0099] Based on the above embodiment scheme, when it is necessary to switch to the first gear, it is only necessary to control the first clutch sleeve 2113 to engage with the first gear sleeve 2112, the second clutch sleeve 2123 to separate from the second gear sleeve 2122, and the third clutch sleeve 2134 to engage with the second reversing gear 2133. At this time, the first gear sleeve 2112 drives the first rotating shaft 2111 to rotate through the first clutch sleeve 2113, and at the same time drives the second rotating shaft 2121 to rotate in the same direction through the reversing transmission shaft assembly 213, thereby realizing the function of driving the first execution unit 3 and the second execution unit 4 to rotate in the same direction.

[0100] In one embodiment, the first transmission gear 2114 is fixedly connected to the first rotating shaft 2111 .

[0101] In this design, the first transmission gear 2114 is directly connected to the first rotating shaft 2111, and there is no relative motion between them, which means that when the first rotating shaft 2111 rotates, the first transmission gear 2114 will rotate synchronously therewith. Since the first transmission gear 2114 is directly connected to the first rotating shaft 2111, the path of power transmission is very clear and efficient, reducing additional energy loss.

[0102] In another embodiment, the first transmission gear 2114 is fixedly connected to the first gear sleeve 2112 .

[0103] In this design, the first transmission gear 2114 is directly connected to the first gear sleeve 2112, rather than to the first rotating shaft 2111, which means that when the first gear sleeve 2112 rotates, the first transmission gear 2114 will rotate synchronously therewith. This connection method provides more flexibility. Since the first gear sleeve 2112 is meshed with the input shaft assembly 214, the rotation state of the first gear sleeve 2112 can be changed by adjusting the speed or direction of the input shaft assembly 214, thereby affecting the rotation of the first transmission gear 2114. In addition, this design may also allow more speed change or reversing functions to be introduced into the transmission system. For example, by changing the meshing relationship between the first gear sleeve 2112 and the input shaft assembly 214, different transmission ratios or directions can be achieved.

[0104] Preferably, in this embodiment, the first transmission gear 2114 and the first gear sleeve 2112 are an integral structure.

[0105] In one embodiment, the second transmission gear 2124 is fixedly connected to the second rotating shaft 2121 .

[0106] In this embodiment, since the second transmission gear 2124 is directly connected to the second rotating shaft 2121, there is no relative motion between them. Therefore, when the second transmission gear 2124 is driven to rotate, it will directly drive the second rotating shaft 2121 to rotate at the same speed. This fixed connection method reduces the additional components and complexity in the transmission system, making the overall structure more concise and clear. The direct transmission method reduces the loss of energy in the transmission process and improves the transmission efficiency.

[0107] In one embodiment, the first gear sleeve 2112 has a first clamping sleeve, the inner ring of the first clamping sleeve is provided with a first clamping groove 21121, the first clutch sleeve 2113 has a first clamping ring, the outer ring of the first clamping ring is provided with a first clamping block 21131, and when the first clamping block 21131 is engaged with the first clamping groove 21121, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112;

[0108] And / or, the second gear sleeve 2122 has a second clamping sleeve, the inner ring of the second clamping sleeve is provided with a second clamping groove 21221, the second clutch sleeve 2123 has a second clamping ring, the outer ring of the second clamping ring is provided with a second clamping block 21231, when the second clamping block 21231 is clamped with the second clamping groove 21221, the second clutch sleeve 2123 is engaged with the second gear sleeve 2122;

[0109] And / or, the second reversing gear 2133 has a third sleeve, the inner ring of the third sleeve is provided with a third slot 21331, the third clutch sleeve 2134 has a third clamping ring, the outer ring of the third clamping ring is provided with a third clamping block 21341, and when the third clamping block 21341 is engaged with the third slot 21331, the third clutch sleeve 2134 engages with the second reversing gear 2133.

[0110] Among them, the first gear sleeve 2112 is equipped with a first clamping sleeve, and its inner ring is processed with a first groove 21121; the first clutch sleeve 2113 has a first clamping ring, and its outer ring is provided with a first clamping block 21131. When the first clamping block 21131 is aligned with the first groove 21121 and inserted, the first clutch sleeve 2113 and the first gear sleeve 2112 are engaged. At this time, the rotation of the first gear sleeve 2112 will directly drive the first clutch sleeve 2113 to rotate, and then drive the first rotating shaft 2111 to rotate.

[0111] The second gear sleeve 2122 is equipped with a second clamping sleeve, and a second clamping groove 21221 is processed on its inner ring; the second clutch sleeve 2123 has a second clamping ring, and a second clamping block 21231 is provided on its outer ring. When the second clamping block 21231 is aligned with the second clamping groove 21221 and inserted, the second clutch sleeve 2123 and the second gear sleeve 2122 are engaged. At this time, the rotation of the second gear sleeve 2122 will directly drive the second clutch sleeve 2123 to rotate, and then drive the second rotating shaft 2121 to rotate.

[0112] The second reversing gear 2133 is equipped with a third clamping sleeve, and a third clamping groove 21331 is processed on its inner ring; the third clutch sleeve 2134 has a third clamping ring, and a third clamping block 21341 is provided on its outer ring. When the third clamping block 21341 is aligned with the third clamping groove 21331 and inserted, the third clutch sleeve 2134 and the third gear sleeve are engaged. At this time, the rotation of the third rotating shaft 2131 will directly drive the third clutch sleeve 2134 to rotate, thereby driving the second reversing gear 2133 to rotate.

[0113] The clamping design makes the connection between the clutch sleeve and the gear sleeve (or reversing gear) flexible and reliable, and can be engaged or disengaged according to different working requirements. Moreover, the clamping structure is relatively simple, easy to inspect and repair, and reduces maintenance costs.

[0114] Preferably, taking the design of the first ferrule and the first clamping ring as an example, during the design, a plurality of first clamping grooves 21121 are evenly distributed around the inner circumference of the first ferrule, and a plurality of first clamping blocks 21131 are evenly distributed around the outer circumference of the first clamping ring, which is more conducive to the rapid clamping of the first ferrule and the first clamping ring at various angles, and at the same time improves the stability after the clamping. Further preferably, the end of the first clamping block 21131 is set as a triangular tip, and the open end of the first clamping groove 21121 is set as a bell mouth, which is more conducive to guiding the rapid clamping of the first clamping block 21131 and the first clamping groove 21121.

[0115] The cooperation between the second ferrule and the second clamping ring, and the cooperation between the third ferrule and the third clamping ring can be designed with reference to the cooperation between the first ferrule and the first clamping ring.

[0116] In one embodiment, in combination Figure 12-13 The shift mechanism 22 includes a shift driver 222 and a shift frame 221. The shift frame 221 has a first lever 2211, a second lever 2212 and a third lever 2213. The first clutch sleeve 2113 is provided with a first annular groove 21132, the second clutch sleeve 2123 is provided with a second annular groove, and the third clutch sleeve 2134 is provided with a third annular groove 21342. The first lever 2211 extends into the first annular groove 21132, the second lever 2212 extends into the second annular groove, and the third lever 2213 extends into the third annular groove 21342. The shift frame 221 is driven to translate by the shift driver 222, so that the shift frame 221 synchronously pushes the first clutch sleeve 2113, the second clutch sleeve 2123 and the third clutch sleeve 2134 to translate.

[0117] The shift driver 222 is used as a power source 1 to drive the shift rack 221 to perform translational motion. The shift rack 221 has three shifting rods (a first shifting rod 2211, a second shifting rod 2212, and a third shifting rod 2213). The first clutch sleeve 2113, the second clutch sleeve 2123, and the third clutch sleeve 2134 are respectively provided with a first annular groove 21132, a second annular groove, and a third annular groove 21342, which are used to cooperate with the shifting rod of the shift rack 221. Each shifting rod extends into the annular groove of the corresponding clutch sleeve (the first clutch sleeve 2113, the second clutch sleeve 2123, and the third clutch sleeve 2134), respectively, so that when the shift rack 221 moves, the shifting rod pushes the clutch sleeve to move. Moreover, the annular groove structure can prevent the shifting rod from interfering with the rotation of the clutch sleeve, so that the clutch can rotate normally relative to the shifting rod when engaged.

[0118] In this embodiment, when the shift driver 222 drives the shift rack 221 to translate, the three levers will synchronously push the corresponding clutch sleeves to translate. This design ensures that the three clutch sleeves can move simultaneously and with the same displacement, thereby realizing synchronous shifting of gears. Through a shift driver 222 and a shift rack 221, the control of the three clutch sleeves is realized, which greatly simplifies the structure of the transmission system. The simplified structure and efficient shifting mechanism help reduce manufacturing costs and maintenance costs. In addition, the synchronous push design ensures a fast and smooth shifting process, improving the efficiency of the transmission system; because the three clutch sleeves move synchronously, the wear and failure risks caused by asynchrony are reduced, and the reliability of the transmission system is enhanced.

[0119] In one embodiment, the shift driver 222 includes a shift motor 2221 and a shift worm 2222. The shift frame 221 is provided with a sliding pin 2214 that engages with the shift worm 2222. When the shift motor 2221 drives the shift worm 2222 to rotate, the shift worm 2222 can push the shift frame 221 to translate through the sliding pin 2214.

[0120] Among them, the shift motor 2221 is used as the power source 1 and is responsible for providing rotational power. The shift worm 2222 is connected to the output shaft of the shift motor 2221 to convert the rotational power of the motor into linear thrust. The design feature of the shift worm 2222 is that it has a large helical angle and can provide a stable self-locking characteristic, that is, in the absence of external force, relative movement between the worm and the worm wheel (in this case, the "worm wheel" effect simulated by the sliding pin 2214) is not easy to occur. The sliding pin 2214 is set on the shift frame 221 and meshes with the shift worm 2222. The shape and position design of the sliding pin 2214 enables it to effectively convert the rotational motion of the worm into the translational motion of the shift frame 221.

[0121] When the shift motor 2221 drives the shift worm 2222 to rotate, the spiral teeth of the worm contact the sliding pin 2214 and push the sliding pin 2214 to move, thereby driving the entire shift frame 221 to translate. Due to the self-locking property of the worm, the shift frame 221 can remain stable during the translation process and is not prone to accidental position changes.

[0122] In this embodiment, the meshing design of the shift worm 2222 and the slide pin 2214 provides a stable transmission relationship, ensuring a smooth and reliable shifting process. Moreover, the self-locking property of the shift worm 2222 enables the shift rack 221 to remain in the current position when not subject to external forces, thereby preventing accidental gear changes. Through the combination of the shift motor 2221, the shift worm 2222 and the slide pin 2214, a simplified design of the shift driver 222 is achieved, reducing manufacturing costs and maintenance difficulties. In addition, the shift motor 2221 can be precisely controlled by an electronic control system, realizing automation and intelligence of the shifting process.

[0123] In one embodiment, the shift mechanism 22 further includes a plurality of position sensors 223 , and the position sensors 223 are used to sense the position of the shift rack 221 .

[0124] In specific applications, the position sensor needs to be electrically connected to the control board of the shift motor 2221 to feedback the position of the shift rack 221. By feeding back the actual position information of the shift rack 221, the position sensor 223 can assist the control system to achieve more accurate shift control and reduce shift errors.

[0125] Specifically, the number of position sensors to be set needs to be set according to the number of gear positions. For example, when three gear positions are set, three position sensors are generally set; when four gear positions are set, four position sensors are set.

[0126] The position sensor 223 may be a travel switch, a micro switch, a Hall sensor, a magnetoresistive sensor, a photoelectric sensor, or other types. The specific selection depends on the accuracy requirements of the system, the working environment, and other factors.

[0127] In some embodiments, the shift rack 221 can be moved between four working positions under the drive of the shift driver 222, thereby switching the transmission mechanism 21 between the first gear, the second gear, the third gear, and the fourth gear. For ease of understanding, the coordination relationship of each structure in the four gear states is described below:

[0128] Reference Figure 14-15In the first gear, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, and the first gear sleeve 2112 can drive the first shaft 2111 to rotate; at the same time, the second clutch sleeve 2123 is separated from the second gear sleeve 2122, and the second gear sleeve 2122 is idling relative to the second shaft 2121, and the third clutch sleeve 2134 is engaged with the second reversing gear 2133, and the third shaft 2131 drives the second transmission gear 2124 to rotate through the second reversing gear 2133, and the second transmission gear 2124 drives the second shaft 2121 to rotate. At this time, the direction of the second shaft 2121 is the same as that of the first shaft 2111, thereby driving the first execution unit 3 and the second execution unit 4 to rotate in the same direction.

[0129] Reference Figure 16-17 In the second gear, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, and the first gear sleeve 2112 can drive the first shaft 2111 to rotate; at the same time, the second clutch sleeve 2123 is separated from the second gear sleeve 2122, and the second gear sleeve 2122 idles relative to the second shaft 2121, and the third clutch sleeve 2134 is separated from the second reversing gear 2133, and the third shaft 2131 idles relative to the second reversing gear 2133, that is, the second shaft 2121 remains stationary, thereby realizing the first shaft 2111 rotating alone to drive the first execution unit 3 to operate.

[0130] Reference Figure 18-19 In the third gear, the second clutch sleeve 2123 is engaged with the second gear sleeve 2122, and the second gear sleeve 2122 can drive the second shaft 2121 to rotate; at the same time, the first clutch sleeve 2113 is separated from the first gear sleeve 2112, and the first gear sleeve 2112 idles relative to the first shaft 2111, and the third clutch sleeve 2134 is separated from the second reversing gear 2133, and the third shaft 2131 idles relative to the second reversing gear 2133, that is, the first shaft 2111 remains stationary, thereby realizing the second shaft 2121 rotating alone to drive the second execution unit 4 to operate.

[0131] Reference Figure 20-21 In the fourth gear, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, and the first gear sleeve 2112 can drive the first shaft 2111 to rotate, and the second clutch sleeve 2123 is engaged with the second gear sleeve 2122, and the second gear sleeve 2122 can drive the second shaft 2121 to rotate, and because the rotation directions of the first gear sleeve 2112 and the second gear sleeve 2122 are opposite, the first shaft 2111 and the second shaft 2121 rotate in the opposite direction; at the same time, the third clutch sleeve 2134 is separated from the second reversing gear 2133, and the third shaft 2131 idles relative to the second reversing gear 2133; thereby achieving the reverse rotation of the first shaft 2111 and the second shaft 2121, driving the first execution unit 3 and the second execution unit 4 to operate in the opposite direction.

[0132] In one embodiment, the transmission assembly 2 includes a box housing 23, the box housing 23 includes a transmission base 231 and a transmission upper cover 232, the transmission base 231 and the transmission upper cover 232 enclose a transmission installation space, and the transmission mechanism 21 is installed in the transmission installation space;

[0133] The shift mechanism 22 is installed on the transmission upper cover 232 , and a hollow hole 2321 is provided on the transmission upper cover 232 . The first shift rod 2211 , the second shift rod 2212 , and the third shift rod 2213 extend into the transmission installation space through the hollow hole 2321 to cooperate with the transmission mechanism 21 .

[0134] Among them, the box shell 23 is divided into two parts: a transmission base 231 and a transmission upper cover 232. The two parts are tightly combined to enclose a closed transmission installation space. The installation space is the core installation area of ​​the transmission mechanism 21, ensuring that the transmission components can work in a stable and well-protected environment.

[0135] The shift mechanism 22 is cleverly installed on the transmission cover 232. This design is convenient for operation and can effectively utilize space. A hollow hole 2321 is specially designed on the transmission cover 232, so that the key components of the shift mechanism 22 - the first lever 2211, the second lever 2212 and the third lever 2213 can pass through smoothly and enter the transmission installation space to accurately cooperate with the transmission mechanism 21.

[0136] In this embodiment, by installing the shift mechanism 22 on the transmission upper cover 232 and cleverly utilizing the hollow hole 2321 design, efficient use of the internal space of the transmission assembly 2 is achieved. The overall design of the structure is compact, which reduces unnecessary space occupation and helps to improve the overall performance and stability of the transmission assembly 2; when the parts of the shift mechanism 22 need to be maintained or replaced, they can be directly accessed without opening the transmission upper cover 232, which has the advantage of convenient maintenance.

[0137] In one embodiment, the transmission assembly 2 further includes a protective cover 233 , which is installed on the transmission upper cover 232 and covers the shift mechanism 22 .

[0138] The protective cover 233 is installed on the transmission upper cover 232 and covers the outside of the shift mechanism 22, which ensures effective protection of the shift mechanism 22 while not affecting its normal operation and function. In addition, the protective cover 233 can effectively block the hollow hole 2321 on the transmission upper cover 232 to prevent external impurities (such as dust) from entering the transmission assembly 2.

[0139] In one embodiment, the first execution unit 3 and the second execution unit 4 respectively include two groups of rope winders 31 symmetrically arranged, the first transmission output end is transmission-connected to the two groups of rope winders 31 in the first execution unit 3, and the second transmission output end is transmission-connected to the two groups of rope winders 31 in the second execution unit 4.

[0140] The lifting drive device of this embodiment is specifically used in a clothes drying machine with two clothes drying rods, and can realize the function of controlling the lifting of two clothes drying rods separately. When used, each execution unit is connected to drive one clothes drying rod separately. Two sets of symmetrical rope reels 31 are respectively arranged in each execution unit, and the steel wire ropes extending from the two sets of rope reels 31 can be respectively connected to the two ends of the clothes drying rod to provide a stable suspension force for the clothes drying rod, and can ensure the synchronization of the operation of the two rope reels 31 in each set of execution units, and ensure the horizontal lifting of the clothes drying rod.

[0141] On the other hand, this embodiment also provides a clothes drying machine, comprising the above-mentioned lifting drive device.

[0142] The clothes drying machine of this embodiment specifically includes a main unit and two clothes drying rods, and the lifting drive device is installed in the main unit, wherein the first execution unit 3 and the second execution unit 4 are respectively connected to a clothes drying rod, and can realize independent lifting control of the two clothes drying rods.

[0143] Based on the lifting drive device of this embodiment, the lifting control of the two drying rods in the clothes drying machine of this embodiment only needs to be equipped with one power source 1 (motor), which has the advantages of low cost and small space occupation.

[0144] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0145] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0146] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0147] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A lifting drive device, characterized in that: include: A power source, used for outputting power; A transmission assembly, comprising a transmission mechanism and a shifting mechanism, wherein the transmission mechanism comprises a transmission input end, a first transmission output end and a second transmission output end, the transmission input end is connected to the power source, and the shifting mechanism is used to drive the transmission mechanism to shift gears; A first execution unit, connected to the first transmission output end; A second execution unit, connected to the second transmission output end; Among them, the shift mechanism can drive the transmission mechanism to switch between the first gear, the second gear and the third gear. In the first gear, the transmission mechanism drives the first execution unit and the second execution unit to operate in the same direction; in the second gear, the transmission mechanism drives the first execution unit alone to operate; in the third gear, the transmission mechanism drives the second execution unit alone to operate.

2. The lifting drive device according to claim 1, characterized in that: The shift mechanism can also drive the transmission mechanism to switch to a fourth gear. When in the fourth gear, the transmission mechanism drives the first execution unit and the second execution unit to operate in reverse.

3. The lifting drive device according to claim 1, characterized in that: The transmission mechanism includes an input shaft assembly, a first output shaft assembly and a second output shaft assembly, the transmission input end is arranged on the output shaft assembly, the first transmission output end is arranged on the first output shaft assembly, and the second transmission output end is arranged on the second output shaft assembly; the first output shaft assembly and the second output shaft assembly are respectively connected to the input shaft assembly in a transmission manner, so that the input shaft assembly drives the first output shaft assembly and the second output shaft assembly to operate respectively.

4. The lifting drive device according to claim 3, characterized in that: The first output shaft assembly includes a first rotating shaft, a first gear sleeve and a first clutch sleeve, the first gear sleeve is meshed with the input shaft assembly, the first gear sleeve can be rotatably sleeved on the first rotating shaft, the first clutch sleeve can be slidably sleeved on the first rotating shaft, the shift mechanism can drive the first clutch sleeve to engage with or disengage from the first gear sleeve, and when the first clutch sleeve is engaged with the first gear sleeve, the first gear sleeve can drive the first rotating shaft to rotate; The second output shaft assembly includes a second rotating shaft, a second gear sleeve and a second clutch sleeve. The second gear sleeve is meshed with the input shaft assembly. The second gear sleeve can be rotatably sleeved on the second rotating shaft. The second clutch sleeve can be slidably sleeved on the second rotating shaft. The shifting mechanism can drive the second clutch sleeve to engage or disengage from the second gear sleeve. When the second clutch sleeve is engaged with the second gear sleeve, the second gear sleeve can drive the second rotating shaft to rotate.

5. The lifting drive device according to claim 4, characterized in that: The input shaft assembly includes an input gear, the first output shaft assembly and the second output shaft assembly are symmetrically arranged on both sides of the input gear, and the input gear can directly drive the first gear sleeve and the second gear sleeve to rotate in opposite directions; It also includes a reversing transmission shaft assembly. When in the first gear, the reversing transmission shaft assembly is transmission-connected with the first output shaft assembly and the second output shaft assembly. The first output shaft assembly can drive the second rotating shaft to rotate in the same direction through the reversing transmission shaft assembly, so that the transmission mechanism drives the first execution unit and the second execution unit to operate in the same direction.

6. The lifting drive device according to claim 5, characterized in that: The reversing transmission shaft assembly comprises a first reversing gear, a second reversing gear, a third rotating shaft and a third clutch sleeve, wherein the first reversing gear is fixedly sleeved on the third rotating shaft, the second reversing gear is rotatably sleeved on the third rotating shaft, and the third clutch sleeve is slidably sleeved on the third rotating shaft; The first output shaft assembly also includes a first transmission gear meshed with the first reversing gear, and the second output shaft assembly also includes a second transmission gear meshed with the second reversing gear. The shifting mechanism can drive the third clutch sleeve to engage or disengage from the second reversing gear. When the third clutch sleeve is engaged with the second reversing gear, the second clutch sleeve is separated from the second gear sleeve. The first transmission gear can drive the second transmission gear to rotate through the reversing transmission assembly, thereby driving the second rotating shaft to rotate.

7. The lifting drive device according to claim 6, characterized in that: The first transmission gear is fixedly connected to the first rotating shaft; Alternatively, the first transmission gear is fixedly connected to the first gear sleeve.

8. The lifting drive device according to claim 6, characterized in that: The second transmission gear is fixedly connected to the second rotating shaft.

9. The lifting drive device according to claim 6, characterized in that: The first gear sleeve has a first clamping sleeve, the inner ring of the first clamping sleeve is provided with a first clamping groove, the first clutch sleeve has a first clamping ring, the outer ring of the first clamping ring is provided with a first clamping block, and when the first clamping block is clamped with the first clamping groove, the first clutch sleeve is engaged with the first gear sleeve; And / or, the second gear sleeve has a second clamping sleeve, the inner ring of the second clamping sleeve is provided with a second clamping groove, the second clutch sleeve has a second clamping ring, the outer ring of the second clamping ring is provided with a second clamping block, and when the second clamping block is engaged with the second clamping groove, the second clutch sleeve is engaged with the second gear sleeve; And / or, the second reversing gear has a third sleeve, the inner ring of the third sleeve is provided with a third slot, the third clutch sleeve has a third clamping ring, the outer ring of the third clamping ring is provided with a third clamping block, and when the third clamping block is engaged with the third slot, the third clutch sleeve is engaged with the second reversing gear.

10. The lifting drive device according to claim 6, characterized in that: The shift mechanism includes a shift driver and a shift frame, the shift frame has a first shift rod, a second shift rod and a third shift rod, the first clutch sleeve is provided with a first ring groove, the second clutch sleeve is provided with a second ring groove, the third clutch sleeve is provided with a third ring groove, the first shift rod extends into the first ring groove, the second shift rod extends into the second ring groove, and the third shift rod extends into the third ring groove, and the shift frame is driven to translate by the shift driver, so that the shift frame synchronously pushes the first clutch sleeve, the second clutch sleeve and the third clutch sleeve to translate.

11. The lifting drive device according to claim 10, characterized in that: The shift driver comprises a shift motor and a shift worm, the shift frame is provided with a sliding pin meshing with the shift worm, and when the shift motor drives the shift worm to rotate, the shift worm can push the shift frame to translate through the sliding pin.

12. The lifting drive device according to claim 10, characterized in that: The transmission assembly includes a box housing, the box housing includes a transmission base and a transmission upper cover, the transmission base and the transmission upper cover enclose a transmission installation space, and the transmission mechanism is installed in the transmission installation space; The shift mechanism is installed on the transmission upper cover, and a hollow hole is provided on the transmission upper cover, and the first shift rod, the second shift rod and the third shift rod extend into the transmission installation space through the hollow hole to cooperate with the transmission mechanism.

13. The lifting drive device according to claim 1, characterized in that: The first execution unit and the second execution unit respectively include two groups of rope winders arranged symmetrically, the first transmission output end is transmission-connected to the two groups of rope winders in the first execution unit, and the second transmission output end is transmission-connected to the two groups of rope winders in the second execution unit.

14. A clothes drying machine, characterized in that: It comprises a lifting drive device as described in any one of claims 1-13.

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