Lifting device

Abstract

The present application provides a lifting device. The lifting device comprises a housing assembly, a driving assembly, a transmission assembly, and a pushing assembly. The housing assembly has a central axis extending in a vertical direction. The driving assembly is assembled in the housing assembly. The transmission assembly is assembled in the housing assembly and comprises a sleeve connected to the driving assembly, a transmission member arranged in the sleeve, and a moving member arranged in the sleeve and partially extending out of the sleeve. The moving member is connected to the transmission member. The driving assembly drives the sleeve to rotate about the central axis, to drive the transmission member to rotate around the central axis, and drive the transmission member and the moving member to move up and down relative to the sleeve along the central axis. The pushing assembly is assembled outside the housing assembly and connected to the moving member. When the moving member moves up and down relative to the sleeve along the central axis, the pushing assembly is synchronously driven to move up and down relative to the housing assembly along the central axis.

Description

Lifting device CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese patent application No. 202410181604.4, filed on February 18, 2024, the entire text of which is incorporated herein by reference. Technical Field

[0002] The present application relates to, but is not limited to, the technical field of lifting equipment, and in particular to a lifting device. Background Art

[0003] Lifting devices are required in many industries to raise or lower equipment. For example, in the automotive sector, increasing ground clearance is crucial to enable vehicles to navigate obstacles or steep slopes that would be difficult to navigate normally, thus expanding the vehicle's use cases. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The present application provides a lifting device, the height of which can be adjusted as needed and the lifting is labor-saving.

[0006] The present application provides a lifting device, comprising: a shell assembly, having a central axis extending in a vertical direction; a driving assembly, assembled in the shell assembly; a transmission assembly, assembled in the shell assembly, and comprising a sleeve connected to the driving assembly, a transmission member arranged in the sleeve, and a moving member arranged in the sleeve and partially extending outside the sleeve, the moving member being connected to the transmission member, the driving assembly drives the sleeve to rotate around the central axis direction, drives the transmission member to rotate around the central axis direction, and drives the transmission member and the moving member to move up and down along the central axis direction relative to the sleeve; and a pushing assembly, assembled outside the shell assembly, and connected to the moving member, when the moving member moves up and down along the central axis direction relative to the sleeve, it synchronously drives the pushing assembly to move up and down along the central axis direction relative to the shell assembly.

[0007] Optionally, the drive assembly includes a first stator and a first rotor, the first rotor is sleeved on the circumferential side of the sleeve, and the first stator is used to be electrically connected to an external power device, wherein after the external power device energizes the first stator, the first rotor rotates around the center axis, causing the sleeve to rotate synchronously around the center axis.

[0008] Optionally, the lifting device also includes an encoder, which includes a circuit board and a second rotor electrically connected to the circuit board. The second rotor is assembled to the first rotor and rotates synchronously with the first rotor. The circuit board is used to record the rotation data of the second rotor, thereby recording the rotation data of the first rotor.

[0009] Optionally, the lifting device further includes a temperature sensor, which is assembled on the first stator and is used to detect the temperature of the first stator and output a corresponding electrical signal.

[0010] Optionally, the inner wall of the sleeve is provided with a first internal thread; the transmission member is located at the upper part of the sleeve and the peripheral wall is provided with a first external thread matching the first internal thread, and the transmission member is assembled with the sleeve by matching the first external thread with the first internal thread; wherein, when the sleeve rotates around the central axis, the transmission member rotates synchronously around the central axis through the engagement of the first internal thread with the first external thread, and the transmission member moves synchronously relative to the sleeve along the central axis.

[0011] Optionally, a part of the moving member is arranged in the sleeve and connected to the transmission member, and another part of the moving member extends outside the sleeve and is connected to the pushing assembly; the peripheral wall of the moving member is provided with a second external thread matching the first external thread, and the moving member is assembled with the transmission member through the second external thread matching the first external thread; when the transmission member moves synchronously relative to the sleeve along the direction of the central axis, it drives the moving member and the pushing assembly to move synchronously.

[0012] Optionally, the moving part includes a lifting shaft and a split shaft connected to the lifting shaft, the lifting shaft and the split shaft are coaxially arranged and connected to the pushing assembly through the split shaft, and the lifting shaft moves synchronously with the split shaft and the pushing assembly.

[0013] Optionally, the number of the transmission members is set to at least one; at least one of the transmission members is located on the upper part of the sleeve and is symmetrically arranged, and at least one of the transmission members rotates synchronously around the central axis and moves synchronously relative to the sleeve along the central axis.

[0014] Optionally, the lifting device also includes a brake assembly, which is assembled in the shell assembly and located at the top of the transmission assembly; the brake assembly includes a third stator and a mover; the third stator is assembled at the top of the sleeve and is used to be electrically connected to an external power device; wherein, after the external power device energizes the third stator, the mover moves upward relative to the sleeve, separating the mover from the sleeve; after the third stator is de-energized, the mover moves downward relative to the sleeve and abuts against the top of the sleeve.

[0015] Optionally, the shell assembly includes a top shell, a side shell and a bottom shell, the side shell is assembled between the top shell and the bottom shell to form a cavity, and the drive assembly and part of the transmission assembly are assembled in the cavity; the shell assembly also includes a first bearing assembly and a second bearing assembly, the drive assembly is abutted against the side shell, the first bearing assembly and the second bearing assembly are respectively assembled at the top and bottom of the drive assembly, and abut against the circumferential side of the sleeve; the sleeve is abutted against the top shell through the first bearing assembly, and abutted against the bottom shell through the second bearing assembly.

[0016] Optionally, the pushing component includes a pushing tray and an elastic member, the pushing tray is arranged on the peripheral sides of the side shell and the bottom shell, and is connected to the movable member, the pushing tray is provided with a flange in the axial direction, and the elastic member is detachably assembled under the flange, one end of the elastic member abuts against the bottom of the flange, and the other end of the elastic member is used to abut against an external component, so that there is a distance between the pushing tray and the external component, and the pushing tray moves up and down within the distance.

[0017] Optionally, the shell assembly further includes a guide member extending along the direction of the central axis and located between the peripheral wall of the side shell and the inner wall of the pushing assembly, and the pushing tray moves up and down relative to the side shell under the guidance of the guide member.

[0018] Optionally, the lifting device further comprises: a dust cover, which is sleeved on the peripheral side of the pushing tray and located on the top of the flange, and the dust cover is telescopically connected between the top shell and the flange.

[0019] Optionally, at least one through hole is provided on the bottom of the pushing tray, which passes through the bottom and the bottom, and the at least one through hole is located on the peripheral side of the moving member.

[0020] Optionally, the bottom of the moving member is connected to the bottom of the pushing tray via a fastener.

[0021] Optionally, the pushing assembly further includes a buffer member disposed at the bottom of the flange, and the buffer member is configured to buffer the pressure applied by the elastic member to the flange.

[0022] Optionally, the inner ring of the first bearing assembly rotates synchronously with the sleeve around the central axis, and the outer ring of the first bearing assembly is stationary relative to the top shell.

[0023] Optionally, the inner ring of the second bearing assembly rotates synchronously with the sleeve around the central axis, and the outer ring of the second bearing assembly is stationary relative to the bottom shell.

[0024] Optionally, the lifting device further includes: a plate wave spring assembled between the bottom of the second bearing assembly and the inner bottom wall of the bottom shell.

[0025] Optionally, the lifting device further includes a brake assembly, which includes a third stator; the lifting device further includes a first seal, which is assembled between the third stator and the inner side wall of the top shell.

[0026] Optionally, the lifting device further includes a second sealing member, which is assembled at the bottom of the bottom shell and abuts against the outer peripheral wall of the moving member.

[0027] Optionally, the lifting device further includes: a fixing member protruding from the top shell and configured to abut against an external component.

[0028] The lifting device provided by the present application drives the sleeve to rotate about the central axis through the drive assembly, thereby driving the transmission member to rotate about the central axis, so that the transmission member and the movable member move up and down along the central axis relative to the sleeve, and can simultaneously drive the push assembly to move up and down along the central axis relative to the housing assembly. The method of driving the movable member and the push assembly to achieve push lifting by the rotation of the transmission member can finely adjust the lifting height, which is more convenient and quick. In addition, driving the push assembly up and down by the rotation of the transmission member is more labor-saving.

[0029] Still other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0031] FIG1 is a schematic diagram showing a lifting device according to an embodiment of the present application applied to a vehicle.

[0032] FIG2 is a schematic diagram showing a lifting device according to an embodiment of the present application before lifting.

[0033] FIG3 is a schematic diagram showing the lifting device according to an embodiment of the present application after lifting.

[0034] Description of reference numerals:

[0035] Lifting device 100; vehicle 200; vehicle frame 300; vehicle assembly 400; transmission assembly 1; sleeve 11; first internal thread 111; transmission member 12; first external thread 121; moving member 13; second external thread 131; lifting shaft 132; split shaft 133; drive assembly 2; first stator 21; permanent magnet 211; first winding 212; first rotor 22; circuit board 23; second rotor 24; temperature sensor 25; brake assembly 3; third stator 31; third Winding 32; mover 33; first sealing member 34; housing assembly 4; central shaft 401; cavity 402; sealing ring 403; top shell 41; side shell 42; guide member 421; bottom shell 43; sleeve 431; fixing member 44; first bearing assembly 45; second bearing assembly 46; plate wave spring 47; second sealing member 48; screw sleeve 49; pushing assembly 5; pushing tray 51; through hole 511; elastic member 52; flange 53; dust cover 54; buffer member 55; nut 56. DETAILED DESCRIPTION

[0036] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0037] The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the same ordinary meaning as understood by persons of ordinary skill in the art to which this application belongs. The use of "a," "an," and similar terms in this specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. "A plurality" includes two and is equivalent to at least two. "Includes" or "comprising" and similar terms mean that the elements or objects preceding "includes" or "comprising" include the elements or objects listed after "includes" or "comprising," and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and similar terms are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0038] In the related art, the vehicle is mainly lifted by air springs, but the air springs cannot accurately adjust the degree of lifting, and the lifting and lowering are laborious, and the adjustment of the lifting height is not convenient enough.

[0039] In view of this, the present application provides a lifting device. The lifting device includes a shell assembly, a drive assembly, a transmission assembly and a pushing assembly. The shell assembly has a central axis extending in the vertical direction. The drive assembly is assembled in the shell assembly. The transmission assembly is assembled in the shell assembly and includes a sleeve connected to the drive assembly, a transmission member provided in the sleeve and a moving member provided in the sleeve and partially extending outside the sleeve, the moving member is connected to the transmission member, the drive assembly drives the sleeve to rotate around the central axis direction, drives the transmission member to rotate around the central axis direction, and the transmission member and the moving member move up and down relative to the sleeve along the central axis direction. The pushing assembly is assembled outside the shell assembly and is connected to the moving member. When the moving member moves up and down relative to the sleeve along the central axis direction, it synchronously drives the pushing assembly to move up and down relative to the shell assembly along the central axis direction.

[0040] The lifting device provided by the present application drives the sleeve to rotate about the central axis through the drive assembly, thereby driving the transmission member to rotate about the central axis, so that the transmission member and the movable member move up and down along the central axis relative to the sleeve, and can simultaneously drive the push assembly to move up and down along the central axis relative to the housing assembly. The method of driving the movable member and the push assembly to achieve push lifting by the rotation of the transmission member can finely adjust the lifting height, which is more convenient and quick. In addition, driving the push assembly up and down by the rotation of the transmission member is more labor-saving.

[0041] The lifting device of the present application is described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0042] FIG1 is a schematic diagram showing a lifting device 100 according to an embodiment of the present application applied to a vehicle 200. In the embodiment shown in FIG1 , the lifting device 100 can be applied to the vehicle 200 and is used to lift an external component, which can be a vehicle component 400 of the vehicle 200. The lifting device 100 is located between the frame 300 of the vehicle 200 and the vehicle component 400. The bottom end of the lifting device 100 is fixed to the vehicle component 400, and the top end of the lifting device 100 can be fixed to the frame 300 of the vehicle 200. The elastic member 52 of the pushing assembly 5 at the bottom of the lifting device 100 abuts against the vehicle component 400, and the pushing assembly 5 of the lifting device 100 pushes the vehicle component 400 downward, thereby lifting the vehicle 200. In this embodiment, the lifting device 100 can be a linear actuator.

[0043] Figure 2 is a schematic diagram of a lifting device 100 before lifting according to an embodiment of the present application. In the embodiment shown in Figure 2, the lifting device 100 includes a transmission assembly 1, a drive assembly 2, a shell assembly 4 and a pushing assembly 5. In this embodiment, the shell assembly 4 is used to protect other internal components, the drive assembly 2 is used to drive the transmission assembly 1, the transmission assembly 1 is used to transmit power to the pushing assembly 5, and the pushing assembly 5 is used to lift external components. The shell assembly 4 has a center axis (center axis) 401 extending in the vertical direction. The drive assembly 2 is assembled in the shell assembly 4. The transmission assembly 1 is assembled in the shell assembly 4, and includes a sleeve 11 connected to the drive assembly 2, a transmission member 12 provided in the sleeve 11, and a moving member 13 provided in the sleeve 11 and partially extending outside the sleeve 11. Movable member 13 is connected with transmission member 12, and drive assembly 2 drives sleeve 11 to rotate around central axis 401 directions, drives transmission member 12 to rotate around central axis 401 directions, and drives transmission member 12 and movable member 13 to move up and down relative to sleeve 11 along central axis 401 directions. Pushing assembly 5 is assembled in housing assembly 4 outside, and is connected with moving member 13, when moving member 13 moves up and down relative to sleeve 11 along central axis 401 directions, synchronously drives pushing assembly 5 to move up and down relative to housing assembly 4 along central axis 401 directions. So arrange, drive sleeve 11 around central axis 401 directions by drive assembly 2, drive transmission member 12 to rotate around central axis 401 directions, make transmission member 12 and movable member 13 move up and down relative to sleeve 11 along central axis 401 directions, can synchronously drive pushing assembly 5 to move up and down relative to housing assembly 4 along central axis 401 directions. The transmission member 12 rotates to drive the moving member 13 and the pushing component 5 to achieve the pushing and lifting method, which can finely adjust the lifting height, is more convenient and quick, and driving the pushing component 5 up and down by rotating the transmission member 12 is more labor-saving.

[0044] FIG3 is a schematic diagram of the lifting device 100 after lifting according to an embodiment of the present application. In combination with the embodiments shown in FIG2 and FIG3 , FIG2 shows the state of the lifting device 100 before lifting the external component. When the external component needs to be lifted, the driving component 2 drives the sleeve 11 to rotate in one direction, driving the transmission member 12 to rotate around the central axis 401, so that the transmission member 12 synchronously drives the moving member 13 to move downward along the central axis 401 relative to the sleeve 11, and the moving member 13 synchronously drives the pushing component 5 to move downward along the central axis 401 relative to the shell component 4, thereby achieving the state of the lifting device 100 after lifting the external component as shown in FIG3 . When switching from the lifting state to the non-lifting state, the driving component 2 drives the sleeve 11 to rotate in the opposite direction, driving the transmission member 12 to rotate, so that the transmission member 12 synchronously drives the moving member 13 to move upward along the center axis 401 relative to the sleeve 11, and the moving member 13 synchronously drives the pushing component 5 to move upward along the center axis 401 relative to the shell component 4, thereby realizing the state of the lifting device 100 before lifting the external component as shown in Figure 2.

[0045] In the embodiment shown in Figures 2 and 3, the inner wall of the sleeve 11 is provided with a first internal thread 111. The transmission member 12 is located at the upper portion of the sleeve 11 and has a first external thread 121 on its circumferential wall that matches the first internal thread 111. The transmission member 12 is assembled with the sleeve 11 by mating the first external thread 121 with the first internal thread 111. The first internal thread 111 and the first external thread 121 can mesh with each other. For example, the lead angle of the first internal thread 111 and the lead angle of the first external thread 121 can be the same in magnitude and direction. Multiple transmission members 12 can be provided, so that the first internal thread 111 of the sleeve 11 and the first external threads 121 of multiple transmission members 12 mesh with each other. In this embodiment, the transmission member 12 can be a stud. With the first external thread 121 mating with the first internal thread 111, the transmission member 12 is assembled to the upper portion of the sleeve 11 and can move from the top to the bottom of the sleeve 11, or from the bottom to the top. When sleeve 11 rotates about central axis 401, transmission member 12 rotates synchronously about central axis 401 through the engagement of first internal thread 111 with first external thread 121, and transmission member 12 moves synchronously relative to sleeve 11 along central axis 401. The engagement of first internal thread 111 of sleeve 11 and first external thread 121 of transmission member 12 enables transmission member 12 to rotate and move. This arrangement, which achieves rotation through thread matching, simplifies rotation and allows for more precise adjustment of movement distance, thereby facilitating fine-tuning of lift height.

[0046] The part of moving member 13 is located in the sleeve 11, and is connected with transmission member 12. In the present embodiment, the top and bottom of transmission member 12 all can be connected and assembled with moving member 13 by retaining spring. In other embodiments, transmission member 12 and moving member 13 can also be assembled by other connection modes. Another part of moving member 13 extends outside the sleeve 11, and is connected with pushing assembly 5. In the present embodiment, moving member 13 and pushing assembly 5 are fixedly connected by nut 56. In other embodiments, moving member 13 and pushing assembly 5 can also be fixedly connected by modes such as clamping, and the application does not limit this. The peripheral wall of moving member 13 is provided with the second external thread 131 that mates with the first external thread 121, mates with the first external thread 121 by the second external thread 131, and moving member 13 and transmission member 12 are assembled.

[0047] In this embodiment, the transmission member 12 can be a roller of a planetary roller screw, which is a transmission component that converts rotational motion into linear motion. The transmission member 12 can be assembled to the outer periphery of the mobile member 13 using fasteners such as a retaining spring, and the first external thread 121 of the transmission member 12 matches the second external thread 131 of the mobile member 13, so that the transmission member 12 rotates around the outer periphery of the mobile member 13 and drives the mobile member 13 to move up and down, thereby converting the rotational motion into linear motion. For example, the thread lead angle of the first external thread 121 and the thread lead angle of the second external thread 131 are the same in magnitude but in opposite directions. This arrangement enables the transmission member 12 to transmit power to the mobile member 13, thereby driving the mobile member 13 to move up and down. The number of transmission members 12 is set to at least one. In this embodiment, the number of transmission members 12 is set to 8. In other embodiments, the number of transmission members 12 can also be set to 2, 3, 4, 5, 6, etc., and this application does not limit this. At least one transmission member 12 is all located at the top of sleeve 11 and is symmetrically arranged. At least one transmission member 12 rotates synchronously around central axis 401 directions and moves synchronously relative to sleeve 11 along central axis 401 directions. In the present embodiment, at least one transmission member 12 is all located at the top of sleeve 11 and is evenly distributed circumferentially on the inner sidewall of sleeve 11. Corresponding transmission member 12 is close to the top of movable member 13. Such arrangement reduces the resistance of transmission member 12 during transmission, more rapidly. When transmission member 12 moves synchronously relative to sleeve 11 along central axis 401 directions, it drives movable member 13 and push assembly 5 to move synchronously. Such arrangement enables transmission member 12 to realize rotation more quickly and effectively under the cooperation of the first internal thread 111 of sleeve 11, thereby driving movable member 13 and push assembly 5 to move synchronously, realizing rapid lifting or rapid cancellation of lifting. In the present embodiment, at least one transmission member 12 rotates synchronously around central axis 401 directions and moves synchronously downward relative to sleeve 11 along central axis 401 directions. When the transmission member 12 moves downwardly relative to the sleeve 11 along the central axis 401, it drives the moving member 13 and the pushing assembly 5 to move downwardly, achieving a rapid lift state. At least one transmission member 12 rotates synchronously about the central axis 401 and moves upwardly relative to the sleeve 11 along the central axis 401. When the transmission member 12 moves upwardly relative to the sleeve 11 along the central axis 401, it drives the moving member 13 and the pushing assembly 5 to move upwardly, canceling the lift state.

[0048] The movable member 13 comprises a lifting shaft 132 and a split shaft 133 connected with the lifting shaft 132. The lifting shaft 132 is coaxially arranged with the split shaft 133, and is connected with the pushing assembly 5 by the split shaft 133. The lifting shaft 132 moves synchronously with the split shaft 133 and the pushing assembly 5. Such arrangement is convenient for the assembly and disassembly of the lifting device 100. In the present embodiment, the movable member 13 is arranged to the lifting shaft 132 and the split shaft 133, and the second external thread 131 is arranged on the outer sidewall of the lifting shaft 132. In other embodiments, the movable member 13 can also be only arranged to an axis, or can be set to the lifting shaft 132 and the split shaft 133 as an integral part.

[0049] Referring back to the embodiment shown in FIG. 2 , the drive assembly 2 includes a first stator 21 and a first rotor 22. The first stator 21 is configured to generate a driving magnetic field, causing the first rotor 22 to rotate. The first rotor 22 is sleeved around the circumference of the sleeve 11. In this embodiment, the first rotor 22 is fixed to the circumference of the sleeve 11, either by bonding or by a bracket, etc., though this application is not limited thereto. The first stator 21 is configured to be electrically connected to an external power device. The external power device may be an external power supply. In this embodiment, the first stator 21 includes a permanent magnet 211 and a first winding 212 wound around the permanent magnet 211. There are multiple, even-numbered first stators 21, and the first winding 212 in the first stator 21 is configured to be electrically connected to the external power device. When the external power device energizes the first stator 21, it drives the first rotor 22 to rotate about the central axis 401, causing the sleeve 11 to rotate synchronously about the central axis 401. With such an arrangement, by energizing the first stator 21 , the first rotor 22 rotates, thereby driving the sleeve 11 to rotate synchronously around the central axis 401 . The method is simple and easy to drive and achieve lifting.

[0050] The lifting device 100 also includes an encoder, which includes a circuit board 23 and a second rotor 24 electrically connected to the circuit board 23. The second rotor 24 is assembled to the first rotor 22 and rotates synchronously with the first rotor 22. The circuit board 23 is used to record the rotation data of the second rotor 24, thereby recording the rotation data of the first rotor 22. By recording the rotation data of the first rotor 22 via the circuit board 23, the lifting height of the lifting device 100 can be recorded, thereby achieving control of the lifting height. This configuration allows for more precise control and adjustment of the lifting height, making it more intelligent, convenient, and quick.

[0051] Lifting device 100 also includes a temperature sensor 25, which is assembled on first stator 21. Temperature sensor 25 is used to detect the temperature of first stator 21 and output a corresponding electrical signal. In this embodiment, temperature sensor 25 can detect the temperature of first winding 212, thereby ensuring that the temperature of first winding 212 is within a normal range, thereby ensuring the safety of lifting device 100.

[0052] In the embodiment shown in Figure 2, the lifting device 100 also includes a brake assembly 3, assembled within the housing assembly 4 and located on top of the transmission assembly 1. The brake assembly 3 is used to stop or continue lifting. The brake assembly 3 includes a third stator 31 and a mover 33. The third stator 31 is used to attract or stop the mover 33 when energized. The third stator 31 is assembled on top of the sleeve 11 and is electrically connected to an external power device. In this embodiment, the third stator 31 includes a third winding 32, which is electrically connected to the external power device. When the external power device energizes the third stator 31, the mover 33 moves upward relative to the sleeve 11, separating the mover 33 from the sleeve 11. When the third stator 31 is de-energized, the mover 33 moves downward relative to the sleeve 11 and abuts against the top of the sleeve 11. This configuration allows the external assembly to be remotely controlled to continue or stop lifting, which is more convenient and quick. In this embodiment, there is a gap between the third stator 31 and the mover 33. When the third winding 32 in the third stator 31 is energized, the mover 33 is adsorbed by the third stator 31, so that the mover 33 cannot be pressed on the top of the sleeve 11 by gravity, so that the sleeve 11 continues to rotate, thereby achieving continuous lifting; when the third winding 32 in the third stator 31 is de-energized, the mover 33 stops being adsorbed on the third stator 31, and the mover 33 is pressed on the sleeve 11 by gravity, so that the sleeve 11 stops rotating, thereby stopping lifting.

[0053] Lifting device 100 further includes a first seal 34, which is assembled between third stator 31 and the inner sidewall of top shell 41 of housing assembly 4. First seal 34 is used to seal the opening of top shell 41 of housing assembly 4, preventing liquid from leaking into lifting device 100 through gaps in top shell 41. For example, first seal 34 may be an O-ring.

[0054] In the embodiment shown in Figure 2, the shell assembly 4 includes a top shell 41, a side shell 42 and a bottom shell 43. The top shell 41, the side shell 42 and the bottom shell 43 are provided so that the components inside the lifting device 100 can be easily assembled and disassembled. The side shell 42 is assembled between the top shell 41 and the bottom shell 43 to form a cavity 402, and the drive assembly 2 and part of the transmission assembly 1 are assembled in the cavity 402. With such an arrangement, the drive assembly 2 and part of the transmission assembly 1 can be protected by the cavity 402 of the shell assembly 4. Among them, a sealing ring 403 is also provided between the side shell 42 and the bottom shell 43, and the sealing ring 403 can be, for example, an O-ring. A sealing ring can also be provided between the side shell 42 and the top shell 41 to ensure the sealing of the shell assembly 4.

[0055] The lifting device 100 further includes a fixing member 44 protruding from the top shell 41 for contacting the external component. The fixing member 44 can be fixed to the external component. In this embodiment, the fixing member 44 is threadedly connected to the external component and can be a fixing bolt.

[0056] The housing assembly 4 also includes a first bearing assembly 45 and a second bearing assembly 46. The drive assembly 2 abuts the side housing 42. The first and second bearing assemblies 45 and 46 are assembled at the top and bottom of the drive assembly 2, respectively, and abut against the circumference of the sleeve 11. The first and second bearing assemblies 45 and 46 are provided to ensure that the relative movement of the sleeve 11 within the housing assembly 4 is not affected, reduce friction, and improve the stability of the lifting device 100. The sleeve 11 abuts against the top housing 41 via the first bearing assembly 45 and against the bottom housing 43 via the second bearing assembly 46. This arrangement allows the sleeve 11 to be more stably assembled between the top and bottom housings 41 and 43, improving the stability of the sleeve 11. The inner ring of the first bearing assembly 45 rotates synchronously with the sleeve 11 about the central axis 401, while the outer ring of the first bearing assembly 45 remains stationary relative to the top housing 41. With this arrangement, after the sleeve 11 and top shell 41 are assembled, the sleeve 11 rotates while the top shell 41 remains stationary, ensuring stable rotation of the sleeve 11 when lifting is required. The inner ring of the second bearing assembly 46 rotates synchronously with the sleeve 11 about the central axis 401, while the outer ring of the second bearing assembly 46 remains stationary relative to the bottom shell 43. With this arrangement, after the sleeve 11 and bottom shell 43 are assembled, the sleeve 11 rotates while the bottom shell 43 remains stationary, ensuring stable rotation of the sleeve 11 when lifting is required.

[0057] Lifting device 100 also includes a plate wave spring 47, which is assembled between the bottom of second bearing assembly 46 and the inner bottom wall of bottom housing 43. Plate wave spring 47 is used to eliminate tolerances between second bearing assembly 46 and bottom housing 43. In other embodiments, plate wave spring 47 may be installed at other locations within lifting device 100 where tolerances need to be eliminated, and this application is not limited thereto.

[0058] Lifting device 100 also comprises second sealing member 48, and second sealing member 48 is assembled in the bottom of pan 43 and abuts with the peripheral wall of moving member 13.Second sealing member 48 is used for the opening of the pan 43 of sealing housing assembly 4, prevents that liquid from leaking in the slit of pan 43 and entering lifting device 100.The below of second sealing member 48 is also provided with screw cap 49, screw cap 49 is used for second sealing member 48 is fixed on pan 43, and has gap between screw cap 49 and the moving member 13, makes it convenient for moving member 13 to move, reduces friction.In the present embodiment, be also provided with sliding sleeve 431 between the inner sidewall of pan 43 and the peripheral wall of moving member 13, sliding sleeve 431 can reduce the friction between moving member 13 and pan 43, reduces resistance, and makes it convenient for moving member 13 to move up and down.

[0059] In the embodiment shown in Figure 2, the push assembly 5 includes a push tray 51 and an elastic member 52. The push tray 51 is located at the peripheral side of the side shell 42 and the bottom shell 43, and is connected to the movable member 13. In the present embodiment, the push tray 51 is fixedly connected to the movable member 13 by a nut 56. In some other embodiments, the push tray 51 can also be connected to the movable member 13 by other means, and the present application does not limit this. The push tray 51 is axially provided with a flange 53. The flange 53 is arranged along the circumferential direction of the push tray 51. The flange 53 is used to contact with the external component, and the push tray 51 extends radially to form the flange 53. The elastic member 52 is detachably assembled below the flange 53. In the present embodiment, the elastic member 52 abuts against the below of the flange 53, and other detachable methods can also be utilized, and the present application does not limit this. When the elastic member 52 is assembled below the flange 53, one end of the elastic member 52 abuts the bottom of the flange 53, while the other end of the elastic member 52 abuts the external component, creating a distance between the push tray 51 and the external component, allowing the push tray 51 to move up and down within this distance. This arrangement allows the elastic member 52 to transmit the force of the flange 53's movement, abutting and pushing the external component, while also providing a buffering effect. In this embodiment, the elastic member 52 is a coil spring, which acts as a shock absorber to protect the normal operation of the lifting device 100.

[0060] The housing assembly 4 also includes a guide member 421 extending along the central axis 401 and positioned between the peripheral wall of the side housing 42 and the inner wall of the push assembly 5. Guided by the guide member 421, the push tray 51 moves up and down relative to the side housing 42. This arrangement facilitates movement of the push tray 51 relative to the side housing 42, prevents displacement of the push tray 51, and ensures the stability of the lifting device 100. In this embodiment, the guide member 421 is integrally formed with the side housing 42 and protrudes from the outer wall of the side housing 42.

[0061] The lifting device 100 also includes a dust cover 54. This dust cover 54 is used to prevent dust from entering the lifting device 100. The dust cover 54 is mounted around the push tray 51 and located on top of the flange 53. The dust cover 54 is retractably connected between the top shell 41 and the flange 53. This arrangement prevents dust from entering the gap between the push tray 51 and the top shell 41 and potentially affecting the stability of the lifting device 100. Furthermore, the retractable connection of the dust cover 54 does not affect the vertical movement of the push tray 51.

[0062] The bottom of the push tray 51 is provided with at least one through hole 511 that runs through from top to bottom, and at least one through hole 511 is positioned at the peripheral side of the movable member 13. In the present embodiment, the through hole 511 is set to two, and can also be set to three, four etc., and the application does not limit this. The through hole 511 is used for exhausting or draining. When the air pressure in the tray is unstable or water inflows, the through hole 511 can stabilize the internal and external air pressure or discharge water, ensures the stability and safety of the lifting device 100. The bottom of the movable member 13 is connected by a fastener (for example, a nut 56) with the bottom of the push tray 51.

[0063] The pushing assembly 5 also includes a buffer member 55, which is provided at the bottom of the flange 53. In this embodiment, the buffer member 55 is a buffer pad, which can be bonded to the bottom of the flange 53 or assembled in other ways, which is not limited by the present application. The buffer pad extends from the bottom of the flange 53 to the side wall of the pushing tray 51. Such an arrangement can reduce the friction between the elastic member 52 and the pushing tray 51 and prevent damage to the pushing tray 51. The buffer pad can be a rubber pad, which is used to buffer the pressure applied by the elastic member 52 to the flange 53 and has a buffering and shock-absorbing effect.

[0064] The above descriptions are merely some embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A lifting device (100), comprising: A housing assembly (4) having a central axis (401) extending in a vertical direction; A drive assembly (2) assembled in the housing assembly (4); A transmission assembly (1) is assembled in the housing assembly (4) and comprises a sleeve (11) connected to the drive assembly (2), a transmission member (12) disposed in the sleeve (11), and a moving member (13) disposed in the sleeve (11) and partially extending outside the sleeve (11), wherein the moving member (13) is connected to the transmission member (12), the drive assembly (2) drives the sleeve (11) to rotate around the central axis (401), drives the transmission member (12) to rotate around the central axis (401), and drives the transmission member (12) and the moving member (13) to move up and down relative to the sleeve (11) along the central axis (401); and The pushing component (5) is assembled outside the shell component (4) and connected to the moving member (13). When the moving member (13) moves up and down along the central axis (401) relative to the sleeve (11), the pushing component (5) is synchronously driven to move up and down along the central axis (401) relative to the shell component (4).

2. The lifting device (100) according to claim 1, wherein: The drive assembly (2) comprises a first stator (21) and a first rotor (22), wherein the first rotor (22) is sleeved on the circumference of the sleeve (11), and the first stator (21) is configured to be electrically connected to an external power device. After the external power device energizes the first stator (21), the first rotor (22) rotates around the central axis (401), causing the sleeve (11) to rotate synchronously around the central axis (401).

3. The lifting device (100) according to claim 2, further comprising: An encoder comprising a circuit board (23) and a second rotor (24) electrically connected to the circuit board (23), wherein the second rotor (24) is assembled to the first rotor (22) and rotates synchronously with the first rotor (22), and the circuit board (23) is configured to record rotation data of the second rotor (24), thereby recording rotation data of the first rotor (22); and / or A temperature sensor (25) is assembled on the first stator (21), and the temperature sensor (25) is configured to detect the temperature of the first stator (21) and output a corresponding electrical signal.

4. The lifting device (100) according to any one of claims 1 to 3, wherein: The inner wall of the sleeve (11) is provided with a first internal thread (111); The transmission member (12) is located at the upper portion of the sleeve (11) and a first external thread (121) matching the first internal thread (111) is provided on the peripheral wall thereof. The transmission member (12) is assembled with the sleeve (11) by matching the first external thread (121) with the first internal thread (111); When the sleeve (11) rotates around the central axis (401), the transmission member (12) rotates synchronously around the central axis (401) by engaging the first internal thread (111) with the first external thread (121), and the transmission member (12) moves synchronously relative to the sleeve (11) along the central axis (401).

5. The lifting device (100) according to claim 4, wherein: A portion of the moving member (13) is disposed in the sleeve (11) and is connected to the transmission member (12), and another portion of the moving member (13) extends outside the sleeve (11) and is connected to the pushing assembly (5); The peripheral wall of the moving member (13) is provided with a second external thread (131) matching the first external thread (121), and the moving member (13) is assembled with the transmission member (12) by matching the second external thread (131) with the first external thread (121); When the transmission member (12) moves synchronously relative to the sleeve (11) along the direction of the central axis (401), it drives the moving member (13) and the pushing component (5) to move synchronously.

6. The lifting device (100) according to any one of claims 1 to 5, wherein: The moving member (13) includes a lifting shaft (132) and a split shaft (133) connected to the lifting shaft (132), the lifting shaft (132) and the split shaft (133) are coaxially arranged and connected to the pushing component (5) through the split shaft (133), and the lifting shaft (132) moves synchronously with the split shaft (133) and the pushing component (5); and / or The number of the transmission member (12) is set to at least one, and at least one of the transmission members (12) is located on the upper part of the sleeve (11) and is symmetrically arranged. At least one of the transmission members (12) rotates synchronously around the direction of the central axis (401) and moves synchronously relative to the sleeve (11) along the direction of the central axis (401).

7. The lifting device (100) according to any one of claims 1 to 6, further comprising: A brake assembly (3) is assembled in the housing assembly (4) and is located on the top of the transmission assembly (1); the brake assembly (3) includes a third stator (31) and a mover (33); the third stator (31) is assembled on the top of the sleeve (11) and is configured to be electrically connected to an external power device; Wherein, after the external power device energizes the third stator (31), the mover (33) moves upward relative to the sleeve (11), so that the mover (33) is separated from the sleeve (11); after the third stator (31) is de-energized, the mover (33) moves downward relative to the sleeve (11) and abuts against the top of the sleeve (11).

8. The lifting device (100) according to any one of claims 1 to 7, wherein: The housing assembly (4) comprises a top shell (41), a side shell (42) and a bottom shell (43); the side shell (42) is assembled between the top shell (41) and the bottom shell (43) to form a cavity (402); the drive assembly (2) and part of the transmission assembly (1) are assembled in the cavity (402); The housing assembly (4) further comprises a first bearing assembly (45) and a second bearing assembly (46), the drive assembly (2) abuts against the side shell (42), the first bearing assembly (45) and the second bearing assembly (46) are respectively assembled on the top and bottom of the drive assembly (2) and abut against the circumferential side of the sleeve (11); The sleeve (11) abuts against the top shell (41) through the first bearing assembly (45), and abuts against the bottom shell (43) through the second bearing assembly (46).

9. The lifting device (100) according to claim 8, wherein: The pushing assembly (5) includes a pushing tray (51) and an elastic member (52), wherein the pushing tray (51) is provided on the peripheral sides of the side shell (42) and the bottom shell (43) and is connected to the moving member (13), and a flange (53) is provided in the axial direction of the pushing tray (51), and the elastic member (52) is detachably assembled below the flange (53), one end of the elastic member (52) abuts against the bottom of the flange (53), and the other end of the elastic member (52) is arranged to abut against an external assembly, so that a distance is provided between the pushing tray (51) and the external assembly, and the pushing tray (51) moves up and down within the distance; The housing assembly (4) further includes a guide member (421), which extends in the direction of the central axis (401) and is located between the peripheral wall of the side shell (42) and the inner wall of the pushing assembly (5). The pushing tray (51) moves up and down relative to the side shell (42) under the guidance of the guide member (421).

10. The lifting device (100) according to claim 9, further comprising: a dust cover (54) sleeved around the push tray (51) and located on top of the flange (53), wherein the dust cover (54) is telescopically connected between the top shell (41) and the flange (53); and / or The bottom of the pushing tray (51) is provided with at least one through hole (511) which passes through from top to bottom, and the at least one through hole (511) is located on the peripheral side of the moving member (13).

11. The lifting device (100) according to claim 9 or 10, wherein: The bottom of the moving member (13) is connected to the bottom of the pushing tray (51) via a fastener; and / or The pushing assembly (5) further comprises a buffer member (55) disposed at the bottom of the flange (53), wherein the buffer member (55) is configured to buffer the pressure applied by the elastic member (52) to the flange (53).

12. The lifting device (100) according to any one of claims 8 to 11, wherein: The inner ring of the first bearing assembly (45) rotates synchronously with the sleeve (11) around the central axis (401), and the outer ring of the first bearing assembly (45) is stationary relative to the top shell (41); and / or The inner ring of the second bearing assembly (46) rotates synchronously with the sleeve (11) around the central axis (401), and the outer ring of the second bearing assembly (46) is stationary relative to the bottom shell (43).

13. The lifting device (100) according to any one of claims 8 to 12, further comprising: A plate-type wave spring (47) is assembled between the bottom of the second bearing assembly (46) and the inner bottom wall of the bottom shell (43).

14. The lifting device (100) according to any one of claims 8 to 13, further comprising: A brake assembly (3), the brake assembly (3) comprising a third stator (31); A first sealing member (34) is assembled between the third stator (31) and the inner side wall of the top shell (41).

15. The lifting device (100) according to any one of claims 8 to 14, further comprising: a second sealing member (48), the second sealing member (48) being assembled at the bottom of the bottom shell (43) and abutting against the outer peripheral wall of the moving member (13); and / or The fixing member (44) is protruding from the top shell (41) and is configured to abut against an external component.

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