Lifting driving device and clothes airing machine

Abstract

The utility model 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 driving device and a clothes drying machine. BACKGROUND

[0002] The existing clothes drying machine adopts a double drying rod form. Compared with a single drying rod, the double drying rod can expand the drying space by one time, thereby meeting more drying requirements of a user. However, in the existing double drying rod clothes drying machine, two sets of independent traction machines need to be arranged to control the lifting of the two drying rods. The two sets of traction machines mean that two motors need to be provided, which leads to the defects of high cost and large space occupation of the clothes drying machine. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the utility model is to provide a lifting driving device and a clothes drying machine, which can solve the above problems existing in the prior art.

[0004] To achieve the above purpose, the following technical solutions are adopted in the present application:

[0005] On the one hand, a lifting driving device is provided, which comprises:

[0006] a power source for outputting power;

[0007] a transmission assembly comprising a transmission mechanism and a gear shifting mechanism, the transmission mechanism comprising a transmission input end, a first transmission output end and a second transmission output end, the transmission input end being connected to the power source, and the gear shifting mechanism being 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] The gear shifting mechanism can drive the transmission mechanism to switch between a first gear position, a second gear position and a third gear position. In the first gear position, the transmission mechanism drives the first execution unit and the second execution unit to rotate in the same direction. In the second gear position, the transmission mechanism drives the first execution unit to rotate alone. In the third gear position, the transmission mechanism drives the second execution unit to rotate alone.

[0011] Optionally, the gear shifting mechanism can also drive the transmission mechanism to switch to a fourth gear position. In the fourth gear position, the transmission mechanism drives the first execution unit and the second execution unit to rotate in opposite directions.

[0012] Optionally, the transmission mechanism comprises 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 in transmission connection with the input shaft assembly, so that the input shaft assembly drives the first output shaft assembly and the second output shaft assembly to rotate, respectively.

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

[0014] The second output shaft assembly comprises a second rotating shaft, a second gear sleeve and a second clutch sleeve, the second gear sleeve is engaged with the input shaft assembly, the second gear sleeve is rotatably sleeved on the second rotating shaft, and the second clutch sleeve is slidably sleeved on the second rotating shaft; the gear shifting mechanism can drive the second clutch sleeve to engage or disengage the second gear sleeve; when the second clutch sleeve engages with the second gear sleeve, the second gear sleeve can drive the second rotating shaft to rotate.

[0015] Optionally, the input shaft assembly comprises an input gear, the first output shaft assembly and the second output shaft assembly are symmetrically arranged on the two 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] Further comprising a reversing transmission shaft assembly, in the first gear position, the reversing transmission shaft assembly is in transmission connection with the first output shaft assembly and the second output shaft assembly, and 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 rotate in the same direction.

[0017] Optionally, the reversing transmission shaft assembly comprises 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 further comprises a first transmission gear engaged with the first reversing gear, the second output shaft assembly further comprises a second transmission gear engaged with the second reversing gear, the gear shifting mechanism is capable of driving the third clutch sleeve to engage or disengage the second reversing gear, when the third clutch sleeve engages with the second reversing gear, the second clutch sleeve is disengaged from the second gear sleeve, the first transmission gear is capable of driving the second transmission gear to rotate through the reversing transmission shaft assembly, and then 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, an inner ring of the first clamping sleeve is provided with a first clamping groove, the first clutch sleeve has a first clamping ring, an outer ring of the first clamping ring is provided with a first clamping block, when the first clamping block is clamped with the first clamping groove, the first clutch sleeve engages with the first gear sleeve.

[0023] And / or, the second gear sleeve has a second clamping sleeve, an inner ring of the second clamping sleeve is provided with a second clamping groove, the second clutch sleeve has a second clamping ring, an outer ring of the second clamping ring is provided with a second clamping block, when the second clamping block is clamped with the second clamping groove, the second clutch sleeve engages with the second gear sleeve.

[0024] And / or, the second reversing gear has a third clamping sleeve, an inner ring of the third clamping sleeve is provided with a third clamping groove, the third clutch sleeve has a third clamping ring, an outer ring of the third clamping ring is provided with a third clamping block, when the third clamping block is clamped with the third clamping groove, the third clutch sleeve engages with the second reversing gear.

[0025] Optionally, the gear shifting mechanism comprises a gear shifting driver and a gear shifting frame, the gear shifting frame has a first shifting lever, a second shifting lever and a third shifting lever, 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 shifting lever extends into the first ring groove, the second shifting lever extends into the second ring groove, the third shifting lever extends into the third ring groove, the gear shifting frame is driven to translate by the gear shifting driver, and the first clutch sleeve, the second clutch sleeve and the third clutch sleeve are synchronously pushed to translate by the gear shifting frame.

[0026] Optionally, the gear shifting driver comprises a gear shifting motor and a gear shifting worm, the gear shifting frame is provided with a sliding pin engaged with the gear shifting worm, and the gear shifting motor drives the gear shifting worm to rotate, and the gear shifting worm can push the gear shifting frame to translate through the sliding pin.

[0027] Optionally, the gear shifting mechanism further comprises a plurality of position sensors for sensing the position of the gear shifting frame.

[0028] Optionally, the transmission assembly comprises a box shell, the box shell comprises a transmission base and a transmission upper cover, a transmission mounting space is enclosed between the transmission base and the transmission upper cover, and the transmission mechanism is mounted in the transmission mounting space.

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

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

[0031] Optionally, in the first execution unit and the second execution unit, two groups of rope winders are symmetrically arranged, the first transmission output end is in transmission connection with the two groups of rope winders in the first execution unit, and the second transmission output end is in transmission connection with the two groups of rope winders in the second execution unit.

[0032] In another aspect, the laundry drying machine comprises the lifting driving device.

[0033] The lifting driving device provided by the utility model can be applied to a laundry drying machine, comprises two execution units, can be connected with two drying rods of the laundry drying machine respectively, and has the function of controlling the lifting of the two drying rods.

[0034] The transmission assembly with the gear shifting function is arranged in the lifting driving device, in the case of using only one power source, any execution unit can be independently controlled to lift or the drying rod execution units can be synchronously controlled to lift by switching the gear position, and the same function as that realized by two motors in the prior art is realized. BRIEF DESCRIPTION OF DRAWINGS

[0035] The application will be described in further detail below with reference to the drawings and embodiments.

[0036] Figure 1This is a schematic diagram of the lifting drive device described in the embodiments of this application;

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

[0038] Figure 3 This is a schematic diagram of the connection between the power source and the transmission assembly described in the embodiments of this 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 diagram of the structure of the first output shaft assembly in an embodiment of this application;

[0042] Figure 7 This is an exploded view of the first output shaft assembly in an embodiment of this application;

[0043] Figure 8 This is a schematic diagram of the structure of the second output shaft assembly according to an embodiment of this application;

[0044] Figure 9 This is an exploded view of the second output shaft assembly according to an embodiment of this application;

[0045] Figure 10 This is a schematic diagram of the reversing drive shaft assembly described in the embodiments of this application;

[0046] Figure 11 This is an exploded view of the reversing drive shaft assembly described in the embodiments of this application;

[0047] Figure 12 This is a schematic diagram of the shifting mechanism described in the embodiments of this application;

[0048] Figure 13 This is an exploded view of the gear shifting mechanism described in the embodiments of this application;

[0049] Figure 14 This is a diagram showing the transmission mechanism described in the embodiment of this application in the first gear position;

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

[0051] Figure 16 This is a diagram showing the transmission mechanism described in the embodiment of this application in the second gear position;

[0052] Figure 17 Fig. 2 is a top view of the transmission mechanism shown in Fig. 1; Figure 16

[0053] Fig. 3 is a state diagram of the transmission mechanism described in the embodiment of the present application in the third gear position; Figure 18

[0054] Figure 19 Fig. 4 is a top view of the transmission mechanism shown in Fig. 3; Figure 18

[0055] Figure 20 Fig. 5 is a state diagram of the transmission mechanism described in the embodiment of the present application in the fourth gear position;

[0056] Figure 21 Fig. 6 is a top view of the transmission mechanism shown in Fig. 5. Figure 20 Fig. 7 is a schematic diagram of the embodiment of the present application;

[0057]

[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 clamping groove; 2113, first clutch sleeve; 21131, first clamping block; 21132, first ring groove; 2114, first transmission gear; 212, second output shaft assembly; 2121, second rotating shaft; 2122, second gear sleeve; 21221, second clamping groove; 2123, second clutch sleeve; 21231, second clamping block; 2124, second transmission gear; 213, reversing transmission shaft assembly; 2131, third rotating shaft; 2132, first reversing gear; 2133, second reversing gear; 21331, third clamping groove; 2134, third clutch sleeve; 21341, third clamping block; 21342, third ring groove; 214, input shaft assembly; 22, gear shifting mechanism; 221, gear shifting frame; 2211, first shifting lever; 2212, second shifting lever; 2213, third shifting lever; 2214, sliding pin; 222, gear shifting driver; 2221, gear shifting motor; 2222, gear shifting worm; 223, position sensor; 23, case body; 231, transmission base; 232, transmission upper cover; 2321, hollow hole; 233, protective cover; 3, first execution unit; 31, rope winding device; 4, second execution unit. DETAILED DESCRIPTION

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

[0060] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0062] The existing partial clothes drying machine adopts a double drying rod form. Compared with a single drying rod, the double drying rod can expand the drying space by one time, thereby meeting more drying demands of users. However, in the existing double drying rod type clothes drying machine, two sets of independent traction machines need to be arranged to control the lifting of the two drying rods. The two sets of traction machines mean that two motors need to be provided, which leads to the defects of high cost and large occupied space of the clothes drying machine.

[0063] In order to overcome the above technical problems, as shown in Figures 1-21 The embodiment provides a lifting driving device, which comprises:

[0064] A power source 1 is used for outputting power.

[0065] A transmission assembly 2 comprises a transmission mechanism 21 and a gear shifting mechanism 22. The transmission mechanism 21 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 1. The gear shifting mechanism 22 is used for driving the transmission mechanism 21 to shift gears.

[0066] A first execution unit 3 is connected to the first transmission output end.

[0067] A second execution unit 4 is connected to the second transmission output end.

[0068] The gear shifting mechanism 22 can drive the transmission mechanism 21 to switch between a first gear position, a second gear position and a third gear position, in the first gear position, the transmission mechanism 21 drives the first execution unit 3 and the second execution unit 4 to rotate in the same direction, in the second gear position, the transmission mechanism 21 drives the first execution unit 3 to rotate alone, and in the third gear position, the transmission mechanism 21 drives the second execution unit 4 to rotate alone.

[0069] The lifting driving device provided by the embodiment can be applied to a clothes airing machine, and includes two execution units, which can be connected to two airing rods of the clothes airing machine to realize the function of controlling the lifting of the two airing rods.

[0070] The power source 1 is the basis of the whole driving device and is responsible for providing necessary power output, and in the application of the clothes airing machine, the power source 1 is usually an electric motor, because it can provide stable and controllable power.

[0071] The transmission assembly 2 is the core part of the scheme, which includes a transmission mechanism 21 and a gear shifting mechanism 22.

[0072] The first execution unit 3 and the second execution unit 4 are the bridge connecting the airing rods and the transmission mechanism 21, and are responsible for converting the output of the transmission mechanism 21 into the lifting action of the airing rods, which are generally in the form of rope winders 31, and in the scheme, there are two execution units, which are connected to two airing rods of the clothes airing machine to realize independent or synchronous control of the two airing 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 with the power source 1 to receive the output of the power source 1, and 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 first execution unit 3 and the second execution unit 4 to rotate respectively, and the specific connection mode 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 mode, turbine worm transmission connection mode, gear chain transmission connection and the like.

[0074] The gear shifting mechanism 22 is used to drive the transmission mechanism 21 to switch between different gear positions to realize different functional requirements, specifically, the transmission assembly 2 is provided with three gear positions: a first gear position, a second gear position and a third gear position.

[0075] In the first gear position, the transmission mechanism 21 can simultaneously drive the first and second execution units 3 and 4 to rotate in the same direction, which is suitable for scenarios where both rods need to be lifted or lowered at the same time; in the second gear position, the transmission mechanism 21 only drives the first execution unit 3 to operate, which is suitable for scenarios where only one rod needs to be lifted or lowered; in the third gear position, the transmission mechanism 21 only drives the second execution unit 4 to operate, which is also suitable for scenarios where only the other rod needs to be lifted or lowered.

[0076] Based on the lifting drive device provided in this embodiment, by designing a transmission assembly 2 with a gear shifting function, the present scheme realizes independent or synchronous control of the two rods using only one power source 1, which avoids the need for 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, the present scheme saves space in the overall design of the clothes drying machine, which is particularly important for miniaturized and compact clothes drying machine design. Through the gear shifting mechanism, the user can choose the lifting mode of the rods according to actual needs, whether both rods need to be lifted or lowered at the same time or only one rod needs to be lifted or lowered. The present scheme can meet the needs.

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

[0078] By driving the first and second execution units 3 and 4 to reverse, it is possible to control one rod to be lifted and the other rod to be lowered at the same time. Therefore, the addition of the fourth gear position makes the function of the clothes drying machine more diverse. In some specific scenarios, the user may need to lift or lower both rods in opposite directions, for example, when the drying space is limited and one rod needs to be lifted to create space while the other rod needs to be lowered to hang new clothes. The reverse operation function of the fourth gear position 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 provided on the output shaft assembly, the first transmission output end is provided on the first output shaft assembly 211, and the second transmission output end is provided on the second output shaft assembly 212. The first and second output shaft assemblies 211 and 212 are respectively in transmission connection with the input shaft assembly 214, so that the input shaft assembly 214 drives the first and second output shaft assemblies 211 and 212 to operate, respectively.

[0080] In this embodiment, the transmission mechanism 21 is ingeniously 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 arranged at the first output shaft assembly 211 and the second output shaft assembly 212 respectively, which 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] As to the transmission connection mode of the input shaft assembly 214 and the first output shaft assembly 211 and the second output shaft assembly 212, it is preferable to be in the mode of gear transmission connection or worm gear transmission connection, which has the advantages of good stability and high precision.

[0082] In an embodiment, as shown in Figure 6 and Figure 7 , 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 engaged with the input shaft assembly 214, the first gear sleeve 2112 is rotatably sleeved on the first rotating shaft 2111, the first clutch sleeve 2113 is slidably sleeved on the first rotating shaft 2111, the gear shifting mechanism 22 can drive the first clutch sleeve 2113 to engage or disengage the first gear sleeve 2112, when the first clutch sleeve 2113 engages with the first gear sleeve 2112, the first gear sleeve 2112 can drive the first rotating shaft 2111 to rotate.

[0083] As shown in Figure 8 and Figure 9 , 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 engaged with the input shaft assembly 214, the second gear sleeve 2122 is rotatably sleeved on the second rotating shaft 2121, the second clutch sleeve 2123 is slidably sleeved on the second rotating shaft 2121, the gear shifting mechanism 22 can drive the second clutch sleeve 2123 to engage or disengage the second gear sleeve 2122, when the second clutch sleeve 2123 engages 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, i.e., the first rotating shaft 2111 can drive the first execution unit 3 to operate when rotating. The first gear sleeve 2112 can be rotatably sleeved on the first rotating shaft 2111, and the first gear sleeve 2112 is engaged with the input shaft assembly 214; and the first clutch sleeve 2113 can be slidably sleeved on the first rotating shaft 2111, i.e., it can only move axially relative to the first rotating shaft 2111. When the power source 1 is started 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, i.e., the second rotating shaft 2121 can drive the second execution unit 4 to operate when rotating. The second gear sleeve 2122 can be rotatably sleeved on the second rotating shaft 2121, and the second gear sleeve 2122 is engaged with the input shaft assembly 214; and the second clutch sleeve 2123 can be slidably sleeved on the second rotating shaft 2121, i.e., 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. Through the precise control of the gear shifting mechanism 22, independent or synchronous driving of the first execution unit 3 and the second execution unit 4 can be realized. Therefore, this embodiment has the advantages of high flexibility and good controllability.

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

[0088] The reversing transmission shaft assembly 213 is further included, and the reversing transmission shaft assembly 213 is in transmission connection with the first output shaft assembly 211 and the second output shaft assembly 212 in the first gear position. 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 rotate in the same direction.

[0089] In the input shaft assembly 214, a shaft coupling for connecting the input gear with the power source 1 is generally arranged, so as to realize the function of driving the input gear to rotate by the power source 1.

[0090] The first output shaft assembly 211 and the second output shaft assembly 212 are symmetrically arranged on both sides of the input gear. Such a 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 symmetric structure, when the input gear rotates, only the first gear sleeve 2112 and the second gear sleeve 2122 can be directly driven to rotate in opposite directions. 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 opposite directions, i.e., the first execution unit 3 and the second execution unit 4 rotate in opposite directions.

[0091] On the basis of the above symmetric 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 rotating in the same direction, the reversing transmission shaft assembly 213 is further arranged in this embodiment scheme. In the first gear position, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, i.e., 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 in transmission connection with 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 achieve the purpose of driving the second rotating shaft 2121 and the second rotating shaft 2121 to rotate in the same direction.

[0092] In summary, in the embodiment, the symmetry distribution of the first output shaft assembly 211 and the second output shaft assembly 212 achieves the balance of the structure, and improves the compactness of the overall structure of the transmission mechanism 21. The compactness helps to save space and improve the rationality of the overall layout, which is particularly important in space-limited application scenarios. At the same time, by introducing the reversing transmission shaft assembly 213, the transmission mechanism 21 can not only realize the reverse rotation power transmission between the two output shaft assemblies, but also realize the same direction rotation when needed. The flexibility makes the transmission mechanism 21 adapt to more diversified application scenarios and requirements.

[0093] In specific implementation, preferably, the input gear, the first gear sleeve 2112 and the second gear sleeve 2122 are all set as bevel gear structures. The vertical arrangement of the gear transmission shaft can be realized by using the bevel gear structure, which is more conducive to the compact design of the entire lifting drive device and facilitates the layout in the main machine of the clothes drying machine.

[0094] In other embodiments, the first output shaft assembly 211 and the second output shaft assembly 212 can also be arranged on the same side of the input gear. This can realize the direct driving of the first gear sleeve 2112 and the second gear sleeve 2122 by the input gear to rotate in the same direction, and realize the direct driving of the first rotating shaft 2111 and the second rotating shaft 2121 to rotate in the same direction by the input gear when the first clutch sleeve 2113 and the first gear sleeve 2112 are engaged, and the second clutch sleeve 2123 and the second gear sleeve 2122 are engaged.

[0095] In an embodiment, referring to Figures 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. The third clutch sleeve 2134 is slidably sleeved on the third rotating shaft 2131.

[0096] The first output shaft assembly 211 further includes a first transmission gear 2114 engaged with the first reversing gear 2132. The second output shaft assembly 212 further includes a second transmission gear 2124 engaged with the second reversing gear 2133. The gear shifting mechanism 22 can drive the third clutch sleeve 2134 to engage or disengage the second reversing gear 2133. When the third clutch sleeve 2134 engages 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 shaft assembly, and then drive the second rotating shaft 2121 to rotate.

[0097] The first reversing gear 2132 is fixedly sleeved on the third rotating shaft 2131, meaning that it rotates synchronously with the third rotating shaft 2131 without relative movement. The second reversing gear 2133 is rotatably sleeved on the third rotating shaft 2131, meaning that it can freely rotate on the third rotating shaft 2131 without having to keep synchronous with the third rotating shaft 2131. The third clutch sleeve 2134 is designed to be slidable 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 engages 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 will rotate independently relative to the second reversing gear 2133.

[0098] In addition, the design also involves two output shaft assemblies: the first output shaft assembly 211 includes a first transmission gear 2114 engaged with the first reversing gear 2132, which will drive the first transmission gear 2114 to rotate through the engagement relationship when the first rotating shaft 2111 rotates. The second output shaft assembly 212 includes a second transmission gear 2124 engaged with the second reversing gear 2133, which will drive the second transmission gear 2124 to rotate through the engagement relationship when the second reversing gear 2133 rotates, 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 position, only the first clutch sleeve 2113 needs to be controlled to engage with the first gear sleeve 2112, the second clutch sleeve 2123 needs to be controlled to separate from the second gear sleeve 2122, and the third clutch sleeve 2134 needs to be controlled 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 simultaneously 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 an embodiment, the first transmission gear 2114 is fixedly connected to the first rotating shaft 2111.

[0101] In this design scheme, the first transmission gear 2114 is directly connected to the first rotating shaft 2111, and there is no relative movement between them, which means that when the first rotating shaft 2111 rotates, the first transmission gear 2114 will rotate synchronously. Since the first transmission gear 2114 is directly connected to the first rotating shaft 2111, the power transmission path 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 being connected to the first rotating shaft 2111, which means that when the first gear sleeve 2112 rotates, the first transmission gear 2114 will rotate synchronously. This connection 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 rotation 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 changing 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 integrated.

[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 movement between them, so 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 reduces the number of additional components and complexity in the transmission system, making the overall structure more concise and clear. The direct transmission method reduces energy loss during transmission and improves transmission efficiency.

[0107] In one embodiment, the first gear sleeve 2112 has a first clamping sleeve, the inner circle 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 circle of the first clamping ring is provided with a first clamping block 21131, when the first clamping block 21131 is clamped 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 circle 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 circle 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, an inner ring of the third sleeve is provided with a third clamping groove 21331, the third clutch sleeve 2134 has a third clamping ring, an outer ring of the third clamping ring is provided with a third clamping block 21341, when the third clamping block 21341 is clamped with the third clamping groove 21331, the third clutch sleeve 2134 is engaged with the second reversing gear 2133.

[0110] The first gear sleeve 2112 is provided with a first sleeve, an inner ring of the first sleeve is machined with a first clamping groove 21121; the first clutch sleeve 2113 has a first clamping ring, an outer ring of the first clamping ring is provided with a first clamping block 21131, when the first clamping block 21131 is aligned and clamped into the first clamping groove 21121, the first clutch sleeve 2113 is engaged with the first gear sleeve 2112, 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 provided with a second sleeve, an inner ring of the second sleeve is machined with a second clamping groove 21221; the second clutch sleeve 2123 has a second clamping ring, an outer ring of the second clamping ring is provided with a second clamping block 21231, when the second clamping block 21231 is aligned and clamped into the second clamping groove 21221, the second clutch sleeve 2123 is engaged with the second gear sleeve 2122, 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 provided with a third sleeve, an inner ring of the third sleeve is machined with a third clamping groove 21331; the third clutch sleeve 2134 has a third clamping ring, an outer ring of the third clamping ring is provided with a third clamping block 21341, when the third clamping block 21341 is aligned and clamped into the third clamping groove 21331, the third clutch sleeve 2134 is engaged with the third gear sleeve, at this time, the rotation of the third rotating shaft 2131 will directly drive the third clutch sleeve 2134 to rotate, and then drive 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 separated according to different working requirements. Moreover, the clamping structure is relatively simple, easy to check and maintain, and reduces the maintenance cost.

[0114] Preferably, taking the first sleeve and the first collar as an example, a plurality of first clamping grooves 21121 are evenly arranged around the inner circumference of the first sleeve, and a plurality of first clamping blocks 21131 are evenly arranged around the outer circumference of the first collar during design, which is more conducive to the rapid clamping of the first sleeve and the first collar at various angles and improves the stability after clamping. Further preferably, the end of the first clamping block 21131 is provided as a triangular tip, and the opening end of the first clamping groove 21121 is provided as a horn 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 of the second sleeve and the second collar, and the cooperation of the third sleeve and the third collar can be designed according to the cooperation mode of the first sleeve and the first collar described above.

[0116] In an embodiment, in combination Figures 12-13 The shift mechanism 22 includes a shift driver 222 and a shift frame 221, the shift frame 221 has a first shift lever 2211, a second shift lever 2212 and a third shift lever 2213, the first clutch sleeve 2113 is provided with a first ring groove 21132, the second clutch sleeve 2123 is provided with a second ring groove, and the third clutch sleeve 2134 is provided with a third ring groove 21342, the first shift lever 2211 extends into the first ring groove 21132, the second shift lever 2212 extends into the second ring groove, and the third shift lever 2213 extends into the third ring groove 21342, the shift driver 222 drives the shift frame 221 to translate, and 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 frame 221 to translate. The shift frame 221 has three shift levers (the first shift lever 2211, the second shift lever 2212 and the third shift lever 2213), and the first clutch sleeve 2113, the second clutch sleeve 2123 and the third clutch sleeve 2134 are respectively provided with a first ring groove 21132, a second ring groove and a third ring groove 21342 for cooperation with the shift levers of the shift frame 221. Each shift lever extends into the ring groove of the corresponding clutch sleeve (the first clutch sleeve 2113, the second clutch sleeve 2123 and the third clutch sleeve 2134), so that when the shift frame 221 moves, the clutch sleeve is pushed to move by the shift lever, and the ring groove structure can avoid the interference of the shift lever with the rotation of the clutch sleeve, so that the clutch can rotate normally relative to the shift lever during engagement.

[0118] In this embodiment, when the shift driver 222 drives the shift frame 221 to translate, the three shift levers will synchronously push the corresponding clutch sleeves to translate, which ensures that the three clutch sleeves can move at the same time and with the same displacement, thereby realizing the synchronous switching of the gears. Through one shift driver 222 and one shift frame 221, the control of the three clutch sleeves is realized, which greatly simplifies the structure of the transmission system. The simplified structure and efficient gear shifting mechanism help to reduce the manufacturing cost and maintenance cost. Moreover, the synchronous pushing design ensures the quickness and stability of the gear shifting process, thereby improving the efficiency of the transmission system. Since the three clutch sleeves are synchronously moved, the wear and failure risk caused by asynchronization is reduced, thereby enhancing the reliability of the transmission system.

[0119] In an embodiment, the shift driver 222 comprises a shift motor 2221 and a shift worm 2222, and the shift frame 221 is provided with a slide pin 2214 engaged 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 slide pin 2214.

[0120] In this embodiment, the shift motor 2221 serves as the power source 1 and is responsible for providing the rotating power. The shift worm 2222 is connected with the output shaft of the shift motor 2221 and converts the rotating power of the motor into linear thrust. The shift worm 2222 has a large helix angle and can provide stable self-locking characteristics, i.e., the worm and the “worm wheel” (in this example, the slide pin 2214 simulates the “worm wheel” effect) are not prone to relative movement under the action of no external force. The slide pin 2214 is arranged on the shift frame 221 and engaged with the shift worm 2222. The shape and position of the slide pin 2214 are designed to effectively convert the rotating 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 helical teeth of the worm contact and push the slide pin 2214 to move, thereby driving the entire shift frame 221 to translate. Due to the self-locking characteristics of the worm, the shift frame 221 can remain stable during translation and is not prone to accidental position changes.

[0122] In this embodiment, the meshing design of the shift worm 2222 and the shift pin 2214 provides a stable transmission relationship, ensuring smooth and reliable shifting process. Moreover, the self-locking property of the shift worm 2222 enables the shift carrier 221 to maintain its current position without external force, preventing accidental gear changes. Through the combination of the shift motor 2221, the shift worm 2222, and the shift pin 2214, the shift driver 222 achieves a simplified design, reducing manufacturing costs and maintenance difficulty. Additionally, the shift motor 2221 can be precisely controlled by an electronic control system, enabling automation and intelligentization of the shifting process.

[0123] In an embodiment, the shift mechanism 22 further includes a plurality of position sensors 223 for sensing the position of the shift carrier 221.

[0124] In practical applications, the position sensors need to be electrically connected to the control board of the shift motor 2221 for feedback of the position of the shift carrier 221. Through feedback of the actual position information of the shift carrier 221, the position sensors 223 can assist the control system to achieve more accurate shifting control and reduce shifting errors.

[0125] Specifically, the number of position sensors needs to be set according to the number of gears, such as three position sensors for three gears, and four position sensors for four gears.

[0126] Among them, the position sensors 223 can adopt various types such as travel switches, micro switches, Hall sensors, magnetoresistance sensors, and photoelectric sensors, and the specific selection depends on factors such as system accuracy requirements and working environment.

[0127] In some embodiments, under the drive of the shift driver 222, the shift carrier 221 can move between four working positions, thereby realizing the switching of 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 as follows:

[0128] Referring to Figures 14-15In the first gear position, 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; at the same time, the second clutch sleeve 2123 is separated from the second gear sleeve 2122, the second gear sleeve 2122 rotates relative to the second rotating shaft 2121, and the third clutch sleeve 2134 is engaged with the second reversing gear 2133, the third rotating shaft 2131 drives the second transmission gear 2124 to rotate through the second reversing gear 2133, the second transmission gear 2124 drives the second rotating shaft 2121 to rotate, at this time, the rotating direction of the second rotating shaft 2121 is the same as that of the first rotating shaft 2111, thereby realizing the same-direction rotation of the first execution unit 3 and the second execution unit 4.

[0129] With reference to Figures 16-17 In the second gear position, 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; at the same time, the second clutch sleeve 2123 is separated from the second gear sleeve 2122, the second gear sleeve 2122 rotates relative to the second rotating shaft 2121, and the third clutch sleeve 2134 is separated from the second reversing gear 2133, the third rotating shaft 2131 rotates relative to the second reversing gear 2133, that is, the second rotating shaft 2121 remains stationary, thereby realizing the rotation of the first execution unit 3 driven by the first rotating shaft 2111 alone.

[0130] With reference to Figures 18-19 In the third gear position, 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; at the same time, the first clutch sleeve 2113 is separated from the first gear sleeve 2112, the first gear sleeve 2112 rotates relative to the first rotating shaft 2111, and the third clutch sleeve 2134 is separated from the second reversing gear 2133, the third rotating shaft 2131 rotates relative to the second reversing gear 2133, that is, the first rotating shaft 2111 remains stationary, thereby realizing the rotation of the second execution unit 4 driven by the second rotating shaft 2121 alone.

[0131] With reference to Figures 20-21 In the fourth gear position, 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, 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, and because the rotating directions of the first gear sleeve 2112 and the second gear sleeve 2122 are opposite, the first rotating shaft 2111 and the second rotating shaft 2121 rotate in opposite directions; at the same time, the third clutch sleeve 2134 is separated from the second reversing gear 2133, the third rotating shaft 2131 rotates relative to the second reversing gear 2133; thereby realizing the opposite-direction rotation of the first rotating shaft 2111 and the second rotating shaft 2121, and driving the opposite-direction rotation of the first execution unit 3 and the second execution unit 4.

[0132] In an embodiment, the transmission assembly 2 comprises a box shell 23, the box shell 23 comprising a transmission base 231 and a transmission upper cover 232, a transmission installation space being enclosed between the transmission base 231 and the transmission upper cover 232, and the transmission mechanism 21 being installed in the transmission installation space;

[0133] The shift mechanism 22 is installed on the transmission upper cover 232, and the transmission upper cover 232 is provided with a hollow hole 2321, and 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] The box shell 23 is divided into the transmission base 231 and the transmission upper cover 232, and the two parts are tightly combined to jointly enclose a closed transmission installation space, which 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 ingeniously installed on the transmission upper cover 232, which not only facilitates operation but also effectively utilizes space. The transmission upper cover 232 is specially designed with a hollow hole 2321, so that the key components of the shift mechanism 22, i.e. the first shift rod 2211, the second shift rod 2212 and the third shift rod 2213, can smoothly pass through and enter the transmission installation space to precisely cooperate with the transmission mechanism 21.

[0136] In this embodiment, by installing the shift mechanism 22 on the transmission upper cover 232 and ingeniously utilizing the hollow hole 2321 design, efficient use of the internal space of the transmission assembly 2 is achieved. The overall structure is compact, reducing unnecessary space occupation, which helps to improve the overall performance and stability of the transmission assembly 2; when the components of the shift mechanism 22 need to be maintained or replaced, the transmission upper cover 232 does not need to be opened to directly access, which has the advantage of convenient maintenance.

[0137] In an embodiment, the transmission assembly 2 further comprises 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 realization. Moreover, the protective cover 233 can effectively shield the hollow hole 2321 on the transmission upper cover 232, preventing external impurities (such as dust) from entering the internal space of the transmission assembly 2.

[0139] In an embodiment, the first execution unit 3 and the second execution unit 4 each include two groups of symmetrically arranged rope winders 31, the first transmission output end is in transmission connection with the two groups of rope winders 31 in the first execution unit 3, and the second transmission output end is in transmission connection with the two groups of rope winders 31 in the second execution unit 4.

[0140] The lifting driving device of the embodiment is specifically applied to a clothes drying machine with double drying rods, and can realize the function of controlling the lifting of the two drying rods respectively. In application, each execution unit is connected to drive one drying rod. Two groups of symmetrically arranged rope winders 31 are arranged in each execution unit, and the steel wires extended from the two groups of rope winders 31 can be connected to the two ends of the drying rod respectively, so that stable suspension force is provided for the drying rod, and the synchronization of the operation of the two rope winders 31 in each execution unit is ensured, and the horizontal lifting of the drying rod is ensured.

[0141] On the other hand, the embodiment also provides a clothes drying machine including the lifting driving device.

[0142] The clothes drying machine of the embodiment specifically includes a main machine and two drying rods, and the lifting driving device is installed in the main machine, and the first execution unit 3 and the second execution unit 4 are connected to one drying rod respectively, so that independent lifting control of the two drying rods can be realized.

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

[0144] In the description herein, it should be understood that the terms “upper”, “lower”, “left”, “right”, and the like orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms “first” and “second” are only used to distinguish in the description, and do not have special meanings.

[0145] In the description of the present specification, the description referring to the terms “an embodiment”, “an example” and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0146] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0147] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these ways will fall within the scope of protection of the present application.

Claims

1. A lifting drive apparatus, characterized by The utility model relates to a power transmission device, comprising: a power source for outputting power; a transmission assembly including a transmission mechanism and a shift mechanism, the transmission mechanism including a transmission input end, a first transmission output end and a second transmission output end, the transmission input end being connected to the power source, the shift mechanism being used to drive the transmission mechanism to shift; a first execution unit connected to the first transmission output end; a second execution unit connected to the second transmission output end; wherein the shift mechanism can drive the transmission mechanism to switch between a first gear position, a second gear position and a third gear position, in the first gear position, the transmission mechanism drives the first execution unit and the second execution unit to rotate in the same direction; in the second gear position, the transmission mechanism drives the first execution unit to rotate alone; in the third gear position, the transmission mechanism drives the second execution unit to rotate alone.

2. The lift drive apparatus according to claim 1, characterized in that, The shift mechanism can also drive the transmission mechanism to switch to a fourth gear position, in the fourth gear position, the transmission mechanism drives the first execution unit and the second execution unit to rotate in opposite directions.

3. The lift drive apparatus according to claim 1, wherein 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 in transmission connection with the input shaft assembly, so that the input shaft assembly drives the first output shaft assembly and the second output shaft assembly to rotate respectively.

4. The lift drive apparatus 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 engaged with the input shaft assembly, the first gear sleeve is rotatably sleeved on the first rotating shaft, the first clutch sleeve is slidably sleeved on the first rotating shaft, the shift mechanism can drive the first clutch sleeve to engage or disengage the first gear sleeve, and when the first clutch sleeve engages 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 engaged with the input shaft assembly, the second gear sleeve is rotatably sleeved on the second rotating shaft, the second clutch sleeve is slidably sleeved on the second rotating shaft, the shift mechanism can drive the second clutch sleeve to engage or disengage the second gear sleeve, and when the second clutch sleeve engages the second gear sleeve, the second gear sleeve can drive the second rotating shaft to rotate.

5. The lift drive apparatus according to claim 4, wherein The input shaft assembly includes an input gear, the first output shaft assembly and the second output shaft assembly are symmetrically arranged on the two 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; Also comprise a reversing transmission shaft assembly, in the first gear position, the reversing transmission shaft assembly is in transmission connection 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 as to realize the transmission mechanism driving the first execution unit and the second execution unit to rotate in the same direction.

6. The lift drive apparatus according to claim 5, wherein The reversing transmission shaft assembly comprises 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. The first output shaft assembly further comprises a first transmission gear meshing with the first reversing gear, the second output shaft assembly further comprises a second transmission gear meshing with the second reversing gear, the gear shifting mechanism can drive the third clutch sleeve to engage or disengage the second reversing gear, when the third clutch sleeve engages with the second reversing gear, the second clutch sleeve is separated from the second gear sleeve, and the first transmission gear can drive the second transmission gear to rotate through the reversing transmission shaft assembly, and then drive the second rotating shaft to rotate.

7. The lifting drive device according to claim 6, wherein 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 lift drive apparatus of claim 6, wherein, The second transmission gear is fixedly connected to the second rotating shaft.

9. The lifting drive device according to claim 6, wherein 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 engages 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 clamped with the second clamping groove, the second clutch sleeve engages with the second gear sleeve; And / or, the second reversing gear has a third clamping sleeve, the inner ring of the third clamping sleeve is provided with a third clamping groove, 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 clamped with the third clamping groove, the third clutch sleeve engages with the second reversing gear.

10. The lift drive apparatus of claim 6, wherein, The shift mechanism comprises a shift driver and a shift frame, the shift frame has a first shift lever, a second shift lever and a third shift lever, 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 lever extends into the first ring groove, the second shift lever extends into the second ring groove, and the third shift lever extends into the third ring groove, the shift frame is driven to translate by the shift driver, and the shift frame synchronously pushes the first clutch sleeve, the second clutch sleeve and the third clutch sleeve to translate.

11. The lift drive apparatus of claim 10, wherein, The shift driver comprises a shift motor and a shift worm, the shift frame is provided with a slide pin engaged with the shift worm, and the shift motor drives the shift worm to rotate, and the shift worm can push the shift frame to translate through the slide pin.

12. The lift drive apparatus of claim 10, wherein, The transmission assembly comprises a box shell, the box shell comprises a transmission base and a transmission upper cover, a transmission installation space is formed between the transmission base and the transmission upper cover, and the transmission mechanism is installed in the transmission installation space. The shift mechanism is installed on the transmission upper cover, the transmission upper cover is provided with a hollow hole, the first shift lever, the second shift lever and the third shift lever extend into the transmission installation space through the hollow hole to cooperate with the transmission mechanism.

13. The lift drive apparatus of claim 1, wherein, Among the first execution unit and the second execution unit, two groups of rope winders are symmetrically arranged, the first transmission output end is in transmission connection with the two groups of rope winders in the first execution unit, and the second transmission output end is in transmission connection with the two groups of rope winders in the second execution unit.

14. A clothes drying machine characterised in that, The lifting drive device comprises a lifting drive device according to any one of claims 1-13. The shift mechanism comprises a shift driver and a shift frame, the shift frame has a first shift lever, a second shift lever and a third shift lever, 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 lever extends into the first ring groove, the second shift lever extends into the second ring groove, and the third shift lever extends into the third ring groove, the shift frame is driven to translate by the shift driver, and the shift frame synchronously pushes the first clutch sleeve, the second clutch sleeve and the third clutch sleeve to translate. The shift driver comprises a shift motor and a shift worm, the shift frame is provided with a slide pin engaged with the shift worm, and the shift motor drives the shift worm to rotate, and the shift worm can push the shift frame to translate through the slide pin. The transmission assembly comprises a box shell, the box shell comprises a transmission base and a transmission upper cover, a transmission installation space is formed between the transmission base and the transmission upper cover, and the transmission mechanism is installed in the transmission installation space. The shift mechanism is installed on the transmission upper cover, the transmission upper cover is provided with a hollow hole, the first shift lever, the second shift lever and the third shift lever extend into the transmission installation space through the hollow hole to cooperate with the transmission mechanism. Among the first execution unit and the second execution unit, two groups of rope winders are symmetrically arranged, the first transmission output end is in transmission connection with the two groups of rope winders in the first execution unit, and the second transmission output end is in transmission connection with the two groups of rope winders in the second execution unit. The lifting drive device comprises a lifting drive device according to any one of claims 1-13.

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