Lifting support

Abstract

The embodiment of the utility model provides a lifting support. The lifting support comprises a base, a lifting device and a lifting device, the lifting mechanism comprises a driving part, a lead screw and a connecting assembly, the connecting assembly is used for installing the displayer, the driving part is installed on the base and connected with the lead screw, the connecting assembly is slidably connected with the base and matched with the lead screw in a threaded mode, and the driving part can drive the lead screw to rotate so as to drive the connecting assembly to slide relative to the base; the detection module comprises a speed reducer, a magnetic part and a magnetic coding sensor, the input end of the speed reducer is connected with the lead screw, one of the magnetic part and the magnetic coding sensor is arranged at the output end of the speed reducer, the other one of the magnetic part and the magnetic coding sensor is arranged on the base, and the magnetic coding sensor is used for detecting the magnetic field change of the magnetic part. The magnetic part can rotate at the rotating speed smaller than that of the lead screw, so that the number of rotating turns of the magnetic part in unit time is smaller than that of the lead screw, and the detection precision of the magnetic coding sensor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display equipment technical field especially is involved in a kind of lifting support. BACKGROUND

[0002] In the display stand, the screw rod can drive the slider cooperating with the screw rod thread to move when rotating, the slider is connected with the display, and the screw rod and the slider cooperatively realize the height adjustment of the display.The movement distance of the slider is linearly related to the number of turns of the screw rod, so that the position height of the display equipment on the slider can be obtained according to the number of turns of the screw rod.In the prior art, the number of turns of the magnetic part provided on the screw rod is measured by the magnetic encoder to obtain the position height of the display equipment.When the height of the display equipment changes greatly, the screw rod correspondingly drives the magnetic part to rotate for many turns.However, in the case that the magnetic part rotates for many turns, the measurement accuracy of the magnetic encoder is low, which may result in that the correct position height information of the display equipment cannot be obtained. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art.For this purpose, the utility model provides a lifting support, which can make the number of turns of the magnetic part less than the number of turns of the screw rod.

[0004] The utility model embodiment provides a kind of lifting support, lifting support includes: pedestal;Lifting mechanism, including driving piece, screw rod and connecting component, connecting component is used to install display, driving piece is installed on pedestal, and is connected with screw rod, connecting component is slidably connected with pedestal, and is threadedly cooperated with screw rod, driving piece can drive screw rod rotation, to drive connecting component relative pedestal sliding;Detection module, including reduction gear, magnetic part and magnetic encoding inductor, the input end of reduction gear is connected with screw rod, one of magnetic part and magnetic encoding inductor is set in the output end of reduction gear, another is set on pedestal, and magnetic encoding inductor is used to detect the magnetic field change of the magnetic part.

[0005] The lifting support provided by the utility model embodiment has at least the following beneficial effects:

[0006] Connecting component can install display, screw rod can drive connecting component to drive display to move, the input end of reduction gear is connected with screw rod, the output end of reduction gear is connected with magnetic part, on the one hand, magnetic encoding inductor can detect the number of turns of magnetic part, so as to facilitate obtaining the position of display, on the other hand, when screw rod rotates, reduction gear can make magnetic part rotate at less than the rotational speed of screw rod, so that the number of turns of magnetic part in unit time can be less than the number of turns of screw rod, thereby facilitating to improve the detection accuracy of magnetic encoding inductor.

[0007] In one embodiment of the implementation, the speed reducer comprises a gear box and a gear shifting assembly, the gear box is mounted on the base, the gear shifting assembly is arranged in the gear box, the screw rod extends into the gear box and is connected with the input end of the gear shifting assembly.

[0008] In one embodiment of the implementation, the gear shifting assembly comprises a first planetary gear set, the sun gear of the first planetary gear set is connected with the screw rod, the planet carrier of the first planetary gear set is connected with the magnetic member, the gear box is fixed on the base, and part of the gear box forms the ring gear of the first planetary gear set.

[0009] In one embodiment of the implementation, the gear shifting assembly further comprises a second planetary gear set, the sun gear of the second planetary gear set is coaxial with the sun gear of the first planetary gear set, the sun gear of the second planetary gear set is connected with the planet carrier of the first planetary gear set, the magnetic member is arranged on the planet carrier in the second planetary gear set, and part of the gear box forms the ring gear of the second planetary gear set.

[0010] In one embodiment of the implementation, the gear shifting assembly further comprises a third planetary gear set and a brake gear, the sun gear of the third planetary gear set is coaxial with the sun gear of the first planetary gear set, the sun gear of the third planetary gear set is connected with the planet carrier of the first planetary gear set, the planet carrier of the third planetary gear set is connected with the sun gear of the second planetary gear set, part of the gear box forms the ring gear of the third planetary gear set, the brake gear is engaged with the planet gear in the third planetary gear set, the brake gear is engaged with the sun gear in the third planetary gear set, and / or the brake gear is engaged with the ring gear in the third planetary gear set, the brake gear can limit the relative rotation between the sun gear and the ring gear in the third planetary gear set, and the brake gear is detachably arranged.

[0011] In one embodiment of the implementation, the lifting support comprises a guide rail and a fixing frame, the guide rail is fixed on the base, the connecting assembly is slidably matched with the guide rail, the fixing frame is mounted on the guide rail, and the gear box is mounted on the fixing frame.

[0012] In one embodiment of the implementation, the magnetic encoding inductor is mounted on the fixing frame and located at the top side of the magnetic member.

[0013] In one embodiment of the implementation, the lifting mechanism further comprises an elastic member, the elastic member is mounted on the fixing frame and connected with the connecting assembly.

[0014] In one embodiment of the embodiment, the speed reducer further comprises a connecting column, one end of the connecting column extends into the gear box and connects with the gear assembly, and the other end extends out of the gear box and is provided with the magnetic member.

[0015] In one embodiment of the embodiment, the speed reducer further comprises a connecting fixed member, the connecting fixed member is connected with the output end of the speed reducer, the connecting fixed member surrounds the outer circumferential surface of the connecting column and abuts against the outer circumferential surface of the connecting column.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0018] Figure 1 is a three-dimensional structural schematic diagram of the lifting support under one embodiment of the embodiment of the present application;

[0019] Figure 2 is a schematic diagram of part of the lifting support of Figure 1 ;

[0020] Figure 3 is a structural schematic diagram of the detection module of Figure 2 ;

[0021] Figure 4 is a schematic diagram of part of the detection module of Figure 3 ;

[0022] Figure 5 is a disassembly schematic diagram of the detection module of Figure 4 . BRIEF DESCRIPTION OF DRAWINGS

[0024] Lifting support 100; base 10; lifting mechanism 20; driving member 21; screw rod 22; connecting assembly 23; elastic member 24; detection module 30; speed reducer 31; input end 311; output end 312; gear box 313; gear assembly 314; first planetary gear set 3141; second planetary gear set 3142; third planetary gear set 3143; brake gear 3144; connecting column 315; connecting fixed member 316; magnetic member 32; magnetic code inductor 33; guide rail 40; fixed frame 50; first sun gear 61; first planet gear 62; first planet carrier 63; second sun gear 64; second planet gear 65; second planet carrier 66; third sun gear 67; third planet gear 68; third planet carrier 69; inner ring gear 70. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0028] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0029] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0030] Please refer to Figures 1 to 4 , Figure 1 is a schematic diagram of the partial structure of the lifting support 100 of Figure 2 is a schematic diagram of the partial structure of the lifting support 100 of Figure 1 Figure 3 is a schematic diagram of the detection module 30 of Figure 2 Figure 4 is a schematic diagram of the detection module 30 of Figure 3 ​​The utility model discloses a schematic diagram of part structure of detection module 30. The utility model provides a lifting support 100, lifting support 100 includes: base 10, lifting mechanism 20 includes driving part 21, screw rod 22 and connecting assembly 23, connecting assembly 23 is used to install display, driving part 21 is installed on base 10, and is connected with screw rod 22, connecting assembly 23 is slidably connected with base 10, and is screwed with screw rod 22, driving part 21 can drive screw rod 22 rotation to drive connecting assembly 23 relative base 10 sliding, detection module 30 includes reduction gear 31, magnetic part 32 and magnetic encoding inductor 33, the input end 311 of reduction gear 31 is connected with screw rod 22, one of magnetic part 32 and magnetic encoding inductor 33 is arranged on the output end 312 of reduction gear 31, and the other is arranged on base 10, and magnetic encoding inductor 33 is used to detect the magnetic field change of magnetic part 32.

[0031] Specifically, screw rod 22 extends along the vertical direction, connecting assembly 23 is slidably connected with base 10 along the vertical direction, screw rod 22 rotates and drives connecting assembly 23 to move along the vertical direction through the thread (not numbered) on the surface of screw rod 22, the rotation axes of the driving end (not numbered) of driving part 21, screw rod 22 and input end 311 coincide, driving part 21, screw rod 22 and reduction gear 31 are arranged along the rotation axis of screw rod 22 in sequence, and the rotation axis of screw rod 22 is parallel to the vertical direction, the rotation speed of input end 311 of reduction gear 31 is less than that of output end 312 of reduction gear 31, magnetic part 32 is a magnet, magnetic part 32 is arranged on output end 312, magnetic encoding inductor 33 is connected with base 10, and magnetic encoding inductor 33 is adjacent to magnetic part 32. In some other embodiments, magnetic encoding inductor 33 is arranged on output end 312, and magnetic part 32 is connected with base 10.

[0032] It can be understood that the rotation axes of the driving end of driving part 21, screw rod 22 and input end 311 are arranged coincidentally, which is conducive to reducing the parts for transmission, thereby simplifying the structure of lifting support 100 to reduce the cost. Magnetic part 32 arranged on output end 312 can rotate relative to magnetic encoding inductor 33 arranged on base 10, so that magnetic encoding inductor 33 can detect the change of magnetic field. When screw rod 22 drives input end 311 of reduction gear 31 to rotate, output end 312 of reduction gear 31 can rotate, and reduction gear 31 can make the number of rotations of magnetic part 32 per unit time less than that of screw rod 22.

[0033] The connecting assembly 23 can be mounted with a display, the lead screw 22 can drive the connecting assembly 23 to move the display, the input end 311 of the speed reducer 31 is connected with the lead screw 22, and the output end 312 of the speed reducer 31 is connected with the magnetic member 32. On one hand, the magnetic code inductor 33 can detect the number of rotations of the magnetic member 32, thereby facilitating the acquisition of the position of the display. On the other hand, when the lead screw 22 rotates, the speed reducer 31 can make the magnetic member 32 rotate at a speed smaller than that of the lead screw 22, thereby making the number of rotations of the magnetic member 32 in a unit time smaller than that of the lead screw 22, and further facilitating the improvement of the detection precision of the magnetic code inductor 33.

[0034] In one embodiment of the embodiment, referring to Figure 1 、 Figure 3 and Figure 4 , the speed reducer 31 comprises a gear box 313 and a variable speed gear assembly 314. The gear box 313 is mounted on the base 10, and the variable speed gear assembly 314 is arranged in the gear box 313. The lead screw 22 extends into the gear box 313 and is connected with the input end of the variable speed gear assembly 314.

[0035] Specifically, the variable speed gear assembly 314 is connected with the gear box 313 in a rotatable manner. Part of the gear box 313 is formed in a toothed manner and is engaged with the variable speed gear assembly 314. The magnetic member 32 is arranged on the output end of the variable speed gear assembly 314. The input end of the variable speed gear assembly 314 is the input end 311 of the speed reducer 31, and the output end of the variable speed gear assembly 314 is the output end 312 of the speed reducer 31. In this way, the parts for connecting the lead screw 22 and the speed reducer 31 can be reduced, the lifting mechanism 20 can be simplified, and the manufacturing cost of the lifting support 100 can be reduced.

[0036] In one embodiment of the embodiment, referring to Figure 1 、 Figure 4 and Figure 5 , Figure 5 is Figure 4 a disassembled schematic view of the detection module 30. The variable speed gear assembly 314 comprises a first planetary gear set 3141. The sun gear in the first planetary gear set 3141 is connected with the lead screw 22, and the planet carrier of the first planetary gear set 3141 is connected with the magnetic member 32. The gear box 313 is fixed on the base 10, and part of the gear box 313 is formed as a ring gear of the first planetary gear set 3141.

[0037] Specifically, the sun gear in the first planetary gear set 3141 is a first sun gear 61, the first sun gear 61 is connected with the input end 311, a first planet gear 62 is arranged on a first planet carrier 63, the first planet gear 62 and the first planet carrier 63 form a planet carrier of the first planetary gear set 3141, the first planet carrier 63 is connected with the output end 312, and an inner wall (not numbered) of the gear box 313 has an inner wall circumferential surface (not numbered), the inner wall circumferential surface is formed with an inner ring gear 70, and part of the inner ring gear 70 constitutes a ring gear of the first planetary gear set 3141. The lead screw 22 drives the first sun gear 61 to rotate through the input end 311, the first sun gear 61 drives the first planet gear 62 to rotate around the axis of the first sun gear 61 when the first sun gear 61 rotates, and the first planet gear 62 drives the first planet carrier 63 to rotate when the first planet gear 62 moves.

[0038] It can be understood that the rotation speed of the first planet carrier 63 is less than that of the first sun gear 61, the lead screw 22 is connected with the first sun gear 61, and the magnetic member 32 is connected with the first planet carrier, which is conducive to reducing the number of rotations of the magnetic member 32 per unit time.

[0039] In an embodiment of the embodiment, please refer to Figure 4 and Figure 5 The variable gear assembly 314 further comprises a second planetary gear set 3142, the sun gear of the second planetary gear set 3142 coincides with the axis of the sun gear of the first planetary gear set 3141, the sun gear of the second planetary gear set 3142 is connected with the planet carrier of the first planetary gear set 3141, the magnetic member 32 is arranged on the planet carrier in the second planetary gear set 3142, and part of the gear box 313 forms a ring gear of the second planetary gear set 3142.

[0040] Specifically, the sun gear in the second planetary gear set 3142 is a second sun gear 64, the second sun gear 64 is connected with the first planet carrier 63, the rotation axis of the second sun gear 64 coincides with that of the first planet carrier 63, a second planet gear 65 is arranged on a second planet carrier 66, the second planet gear 65 and the second planet carrier 66 form a planet carrier of the second planetary gear set 3142, the second planet carrier 66 is connected with the output end 312, and part of the inner ring gear 70 constitutes a ring gear of the second planetary gear set 3142. The first planet carrier 63 drives the second sun gear 64 to rotate, the second sun gear 64 drives the second planet gear 65 to rotate around the rotation axis of the second sun gear 64 when the second sun gear 64 rotates, and the second planet gear 65 drives the second planet carrier 66 to rotate when the second planet gear 65 moves.

[0041] It can be understood that the rotation speed of the second planet carrier 66 is less than that of the first planet carrier 63, and the second planetary gear set 3142 is used to further reduce the rotation speed of the output end 312 relative to the rotation speed of the input end 311.

[0042] In one embodiment of this implementation, please refer to Figure 4 and Figure 5 The transmission gear assembly 314 further comprises a third planetary gear set 3143 and a brake gear 3144, the sun gear of the third planetary gear set 3143 is coaxial with the sun gear of the first planetary gear set 3141, the sun gear of the third planetary gear set 3143 is connected with the planet carrier of the first planetary gear set 3141, the planet carrier of the third planetary gear set 3143 is connected with the sun gear of the second planetary gear set 3142, part of the gear box 313 forms the ring gear of the third planetary gear set 3143, the brake gear 3144 is engaged with the planet gear in the third planetary gear set 3143, the brake gear 3144 is engaged with the sun gear in the third planetary gear set 3143, and / or the brake gear 3144 is engaged with the ring gear in the third planetary gear set, the brake gear 3144 can limit the relative rotation of the sun gear and the ring gear in the third planetary gear set, and the brake gear 3144 is detachably arranged.

[0043] Specifically, the sun gear in the third planetary gear set 3143 is a third sun gear 67, the third sun gear 67 is connected with the first planet carrier 63, the third sun gear 67 is coaxial with the rotation axis of the first planet carrier 63, the third planet gear 68 is arranged on the third planet carrier 69, the third planet gear 68 and the third planet carrier 69 form the planet carrier of the third planetary gear set 3143, the third planet carrier 69 is connected with the second sun gear 64, and part of the inner ring gear 70 constitutes the ring gear of the third planetary gear set 3143. The brake gear 3144 is engaged with the third planet gear 68, the third sun gear 67 and the inner ring gear 70 at the same time, the brake gear 3144 and the third planet gear 68 are both provided with a plurality of, the plurality of brake gears 3144 and the third planet gears 68 are arranged at intervals around the rotation axis of the third sun gear 67, and the brake gear 3144 is connected with the third planet carrier 69 through a pin. The first planet carrier 63 drives the third sun gear 67 to rotate when rotating, the third sun gear 67 drives the third planet gear 68 to rotate around the rotation axis of the third sun gear 67 when rotating, and the third planet gear 68 drives the third planet carrier 69 to rotate when moving. In some other embodiments, the brake gear 3144 is only engaged with the third planet gear 68 and the third sun gear 67.

[0044] It can be understood that when the brake gear 3144 is installed on the third planet carrier 69, the brake gear 3144 is in meshing with the third planet gear 68, the third sun gear 67 and the inner ring gear 70 at the same time, so that the third sun gear 67 cannot rotate relative to the third planet carrier 69, and the second sun gear 64 arranged on the third planet carrier 69 can rotate at the same speed as the third sun gear 67. After the brake gear 3144 is disassembled from the third planet carrier 69, the third sun gear 67 can rotate relative to the third planet carrier 69, and the second sun gear 64 arranged on the third planet carrier 69 rotates at a speed less than that of the third sun gear 67. In this way, the transmission ratio between the input end 311 and the output end 312 can be changed by disassembling and assembling the brake gear 3144, which is beneficial to the lifting support 100 to adapt to different use environments.

[0045] In an embodiment of the embodiment, referring to Figures 1 to 3 , the lifting support 100 comprises a guide rail 40 and a fixed frame 50, the guide rail 40 is fixed on the base 10, the connecting assembly 23 is slidably connected with the guide rail 40, and the fixed frame 50 is installed on the guide rail 40. The gear box 313 is installed on the fixed frame 50.

[0046] Specifically, the guide rail 40 extends in the vertical direction, and two guide rails 40 are arranged at intervals, the fixed frame 50 is connected with the two guide rails 40 respectively, and the gear box 313 is located between the two guide rails 40 and connected with the part of the fixed frame 50 located between the two guide rails 40. It can be understood that the connecting assembly 23 can move along the screw rod 22 and the guide rail 40, and the gear box 313 is connected with the guide rail 40 through the fixed frame 50, which is beneficial to reducing the influence of machining error or assembly error on the relative movement between the screw rod 22, the connecting assembly 23 and the speed reducer 31.

[0047] In an embodiment of the embodiment, referring to Figure 1 and Figure 3 , the magnetic encoding sensor 33 is installed on the fixed frame 50 and located on the top side of the magnetic part 32. Specifically, the magnetic encoding sensor 33 and the magnetic part 32 are arranged along the rotation axis of the screw rod 22. In this way, the magnetic encoding sensor 33 can more accurately detect the change of the magnetic field of the magnetic part 32.

[0048] In an embodiment of the embodiment, referring to Figures 1 to 2The lifting mechanism 20 further comprises an elastic member 24, which is installed on the fixed frame 50 and connected with the connecting assembly 23. Specifically, the elastic member 24 is a constant force spring, one end of which is connected with the fixed frame 50 and the other end of which is connected with the connecting assembly 23, and the driving direction of the constant force spring is vertically upward. It can be understood that, under the influence of the gravity of the connecting assembly 23, when the driving member 21 drives the connecting assembly 23 to move upward through the screw rod 22, the friction between the screw rod 22 and the connecting assembly 23 can be relatively large, thus causing serious wear of the screw rod 22. The vertically upward force generated by the constant force spring can balance the gravity of the connecting assembly 23, thus being conducive to reducing the friction between the screw rod 22 and the connecting assembly 23.

[0049] In one embodiment of the embodiment, please refer to Figures 4 to 5 The speed reducer 31 further comprises a connecting column 315, one end of which extends into the gear box 313 and is connected with the gear assembly 314, and the other end of which extends out of the gear box 313 and is installed with the magnetic member 32. Specifically, the connecting column 315 is provided with a mounting groove (not numbered) matched with the shape of the magnetic member 32, and the magnetic member 32 is installed in the mounting groove on the connecting column 315, that is, the output end 312. In this way, when magnetic members 32 of different sizes need to be installed, the connecting column 315 can be replaced to adapt to the size of the magnetic member 32, without the need to adjust or replace the gearbox, which is conducive to reducing the manufacturing cost of the lifting support 100.

[0050] In one embodiment of the embodiment, please refer to Figures 4 to 5 The speed reducer 31 further comprises a connecting fixed member 316, which is connected with the output end 312 of the speed reducer 31, surrounds the outer circumferential surface of the connecting column 315, and abuts against the outer circumferential surface of the connecting column 315. Specifically, the connecting fixed member 316 is annular, and a mounting hole (not numbered) is formed in the middle of the connecting fixed member 316, and the connecting column 315 is arranged in the mounting hole. It can be understood that the connecting fixed member 316 surrounds the outer circumferential surface of the connecting column 315 and abuts against the outer circumferential surface of the connecting column 315, thus being conducive to providing better fixing effect for the connecting column 315.

[0051] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A lifting support (100), characterized in that, include: Base (10); The lifting mechanism (20) includes a drive component (21), a lead screw (22), and a connecting assembly (23). The connecting assembly (23) is used to mount a display. The drive component (21) is mounted on the base (10) and connected to the lead screw (22). The connecting assembly (23) is slidably connected to the base (10) and threadedly engaged with the lead screw (22). The drive component (21) can drive the lead screw (22) to rotate, thereby causing the connecting assembly (23) to slide relative to the base (10). The detection module (30) includes a reducer (31), a magnetic component (32), and a magnetic encoder (33). The input end (311) of the reducer (31) is connected to the lead screw (22). One of the magnetic component (32) and the magnetic encoder (33) is disposed at the output end (312) of the reducer (31), and the other is disposed on the base (10). The magnetic encoder (33) is used to detect the magnetic field change of the magnetic component (32).

2. The lifting support (100) according to claim 1, characterized in that, The reducer (31) includes a gearbox (313) and a gearbox assembly (314). The gearbox (313) is mounted on the base (10). The gearbox assembly (314) is disposed inside the gearbox (313). The lead screw (22) extends into the gearbox (313) and is connected to the input end (311) of the gearbox assembly (314).

3. The lifting support (100) according to claim 2, characterized in that, The gear assembly (314) includes a first planetary gear set (3141), in which the sun gear is connected to the lead screw (22), the planetary gear carrier of the first planetary gear set (3141) is connected to the magnetic component (32), the gearbox (313) is fixed on the base (10), and a portion of the gearbox (313) forms the gear ring of the first planetary gear set (3141).

4. The lifting support (100) according to claim 3, characterized in that, The gear assembly (314) further includes a second planetary gear set (3142), the sun gear of the second planetary gear set (3142) having its axis coincident with the sun gear axis of the first planetary gear set (3141), the sun gear of the second planetary gear set (3142) being connected to the planetary gear carrier of the first planetary gear set (3141), the magnetic element (32) being disposed on the planetary gear carrier in the second planetary gear set (3142), and a portion of the gearbox (313) forming the gear ring of the second planetary gear set (3142).

5. The lifting bracket (100) according to claim 4, characterized in that, The transmission gear assembly (314) further includes a third planetary gear set (3143) and a brake gear (3144). The sun gear of the third planetary gear set (3143) coincides with the sun gear axis of the first planetary gear set (3141). The sun gear of the third planetary gear set (3143) is connected to the planet carrier of the first planetary gear set (3141). The planet carrier of the third planetary gear set (3143) is connected to the sun gear of the second planetary gear set (3142). A portion of the gearbox (313) forms the... The third planetary gear set (3143) has a ring gear, the brake gear (3144) meshes with the planet gears in the third planetary gear set (3143), the brake gear (3144) meshes with the sun gear in the third planetary gear set (3143), and / or, the brake gear (3144) meshes with the ring gear in the third planetary gear set (3143), the brake gear (3144) can restrict the relative rotation between the sun gear and the ring gear in the third planetary gear set (3143), and the brake gear (3144) is detachable.

6. The lifting support (100) according to claim 2, characterized in that, The lifting bracket (100) includes a guide rail (40) and a fixing frame (50). The guide rail (40) is fixed on the base (10). The connecting component (23) is slidably engaged with the guide rail (40). The fixing frame (50) is mounted on the guide rail (40). The gearbox (313) is mounted on the fixing frame (50).

7. The lifting support (100) according to claim 6, characterized in that, The magnetic encoder (33) is mounted on the bracket (50) and located on the top side of the magnetic component (32).

8. The lifting support (100) according to claim 6, characterized in that, The lifting mechanism (20) also includes an elastic element (24), which is mounted on the fixed frame (50) and connected to the connecting assembly (23).

9. The lifting support (100) according to claim 2, characterized in that, The reducer (31) also includes a connecting post (315), one end of which extends into the gearbox (313) and connects to the gearbox assembly (314), and the other end extends out of the gearbox (313) and is fitted with the magnetic component (32).

10. The lifting support (100) according to claim 9, characterized in that, The reducer (31) also includes a connecting fastener (316), which is connected to the output end (312) of the reducer (31). The connecting fastener (316) surrounds the outer peripheral surface of the connecting post (315) and abuts against the outer peripheral surface of the connecting post (315).

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