Spring tray lifting device capable of reducing output torque of motor

Abstract

The invention discloses a spring tray lifting device capable of reducing output torque of a motor, which comprises a driving assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body and a damper body used for being connected with the outside, the upper spring tray body, the middle spring tray body and the lower spring tray body are sequentially arranged along the damper body from top to bottom, and the driving assembly used for enabling the middle spring tray body to move along the outer side of the damper body is in transmission connection with the middle spring tray body. An upper compression elastic body is arranged between the upper spring tray body and the middle spring tray body, and a lower compression elastic body is arranged between the lower spring tray body and the middle spring tray body. The motor load can be effectively shared, the overall energy efficiency of the lifting system can be improved, the power consumption of the motor is reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of spring tray lifting, and in particular to a spring tray lifting device capable of reducing the output torque of a motor. Background Art

[0002] With the continuous advancement of mechanical technology and the diversification of application requirements, more and more industrial and automotive systems require efficient and precise lifting and adjustment devices, especially in suspension systems and various automation equipment. However, existing lifting devices usually rely on motors to directly drive the load, which results in a large motor output torque, increases the burden on the motor and reduces the energy efficiency of the system. In addition, high-load motor operation will lead to increased power consumption, affecting the long-term operating stability and service life of the equipment.

[0003] Traditional electric lifting systems usually use motors to directly drive the lifting mechanism, but due to factors such as friction, load changes, and system rigidity, the motor needs to output a large torque to overcome these resistances. This design not only increases the power consumption of the motor, but may also cause motor overheating, increased noise, and shortened equipment life.

[0004] To overcome these problems, researchers have tried to introduce a spring system into the lifting device to support part of the load through the elastic deformation of the spring, thereby reducing the torque output by the motor. However, existing technologies still have certain limitations, especially in terms of uneven load, complexity of the spring system, and control accuracy.

[0005] Therefore, there is an urgent need for a new lifting device that can effectively reduce the motor output torque, improve system efficiency, operate stably for a long time, and minimize the load on the motor and mechanical components. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, one object of the present invention is to provide a spring tray lifting device that reduces the motor output torque, which can effectively reduce the motor output torque, improve system efficiency, and can operate stably for a long time, and minimize the load on the motor and mechanical components.

[0007] In the first aspect, the present invention proposes a spring tray lifting device for reducing the output torque of a motor, comprising a driving assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body and a damper body for connecting to the outside, wherein the upper spring tray body, the middle spring tray body and the lower spring tray body are arranged in sequence from top to bottom along the damper body, the upper spring tray body is connected to the upper end of the telescopic part of the damper body, the lower spring tray body is connected to the lower end of the fixed part of the damper body, the driving assembly for displacing the middle spring tray body along the outer side of the damper body is transmission-connected to the middle spring tray body, an upper compression elastomer is provided between the upper spring tray body and the middle spring tray body, and a lower compression elastomer is provided between the lower spring tray body and the middle spring tray body.

[0008] Preferably, the damper body is a type-I damper, the upper spring tray body is a type-I upper spring tray, the middle spring tray body is a type-I middle spring tray, the lower spring tray body is a type-I lower spring tray, the drive assembly includes a type-I motor, the type-I motor includes a type-I motor outer shell and a type-I motor inner shell, a mounting hole 1 penetrating from top to bottom is provided in the middle of the type-I motor inner shell, the type-I damper is sleeved inside the mounting hole 1, a mounting hole 2 is provided inside the type-I motor outer shell, the type-I motor inner shell can be rotatable inside the mounting hole 2, a type-I motor mover is installed on the outside of the type-I motor inner shell, a type-I motor coil stator is installed at the position corresponding to the type-I motor mover inside the type-I motor outer shell, and the type-I motor An internal gear 1 is provided inside the outer shell, an external gear 1 is provided at a position corresponding to the internal gear 1 on the outer side of the inner shell of the type-1 motor, the internal gear 1 is connected to the external gear 1 through a meshing planetary gear set, a planetary gear support frame is installed below the planetary gear set, the planetary gear support frame is rotatably connected to the inside of the outer shell of the type-1 motor, a type-1 middle spring tray is provided above the planetary gear set, the type-1 middle spring tray is rotatably connected to the inside of the outer shell of the type-1 motor and the outside of the inner shell of the type-1 motor respectively, an internal thread 1 is provided in the middle of the type-1 middle spring tray, an external thread 1 matched with the internal thread 1 is provided on the outside of a type-1 damping cylinder of the type-1 damper, and the type-1 damping cylinder is connected to the type-1 middle spring tray through threaded transmission.

[0009] Preferably, the type-1 motor inner casing, the planetary gear support frame, the type-1 middle spring tray and the rotation center point of each group of the planetary gear sets all rotate along the same rotating shaft, and a rotating shaft bearing is installed in the middle of each group of the planetary gear sets. A connecting rod is sleeved inside the rotating shaft bearing, and the upper end of the connecting rod is connected to the type-1 middle spring tray, and the lower end of the connecting rod is connected to the planetary gear support frame.

[0010] Preferably, a lower angular contact bearing is installed at the lower end of the type-one motor inner shell, and the type-one motor inner shell is rotatably connected to the inside of the type-one motor outer shell through the lower angular contact bearing, a middle angular contact bearing is installed at the bottom of the planetary gear support frame, and the planetary gear support frame is rotatably connected to the inside of the type-one motor outer shell through the middle angular contact bearing, an outer ring upper angular contact bearing is installed on the outer side of the type-one middle spring tray, and an inner ring upper angular contact bearing is installed on the inner side of the type-one middle spring tray, and the type-one middle spring tray is rotatably connected to the inside of the type-one motor outer shell and the outside of the type-one motor inner shell respectively through the outer ring upper angular contact bearing and the inner ring upper angular contact bearing.

[0011] Preferably, the upper compression elastic body is a type of upper compression spring, and the lower compression elastic body is a type of lower compression spring.

[0012] Preferably, the damper body is a Type II damper, the upper spring tray body is a Type II upper spring tray, the middle spring tray body is a Type II middle spring tray, the lower spring tray body is a Type II lower spring tray, the driving assembly includes a Type II motor, the Type II motor includes a Type II motor housing and a Type II motor inner housing, a mounting hole three penetrating from top to bottom is provided in the middle of the Type II motor inner housing, the Type II damper is installed inside the mounting hole three, a mounting hole four penetrating from top to bottom is provided in the middle of the Type II motor housing, the Type II motor housing is rotatably connected to the outside of the Type II motor inner housing through the mounting hole four, a Type II motor mover is installed on the inner side of the Type II motor housing, a Type II motor coil stator is installed at the position of the Type II motor mover on the outer side of the Type II motor inner housing corresponding to the position of the Type II motor mover, an external thread two is provided on the outer side of the Type II motor housing, an internal thread two matching the external thread two is provided on the inner side of the Type II middle spring tray, and the Type II middle spring tray is connected to the Type II motor housing through threaded transmission.

[0013] Preferably, the lower end of the Type 2 motor housing is connected to a lower support ring for closing the lower end between the Type 2 motor and the Type 2 damper, the lower end of the outer side of the Type 2 motor inner housing is rotatably connected to the lower support ring via a lower tapered roller bearing, and the upper end of the outer side of the Type 2 motor inner housing is rotatably connected to the inner side of the Type 2 motor housing via an upper tapered roller bearing.

[0014] Preferably, the upper compression elastic body is a type II upper compression spring, and the lower compression elastic body is a type II lower compression spring.

[0015] In a second aspect, a method for calculating the required output torque of a motor of a spring tray lifting device proposed by the present invention includes any one of the above-mentioned schemes of the spring tray lifting device for reducing the output torque of the motor, and the formula for calculating the output torque of the motor is as follows:

[0016] T=K*D*(FF 2 );

[0017] Wherein, T represents the output torque required by the motor, in N*m; K represents the friction coefficient of the threaded connection of the middle spring tray body; D represents the nominal diameter of the thread at the threaded connection of the middle spring tray body, in m; F represents the axial load force of the upper compression elastic body, in N; F 2 Indicates the axial load force of the lower spring, in N.

[0018] In a third aspect, the present invention provides a suspension system comprising any one of the above-mentioned spring tray lifting devices for reducing the output torque of the motor.

[0019] The beneficial effects of the present invention are:

[0020] (1) An upper and lower double compression spring structure is arranged between the coil spring tray of the type 1 motor drive structure and the hollow motor, or an upper and lower double compression spring structure is arranged at both ends of the coil spring tray of the type 2 direct drive structure, and the elastic deformation part of the lower compression spring is used to support the type 1 motor drive or type 2 motor direct drive structure, thereby effectively reducing the motor output torque.

[0021] (2) The hollow motor realizes the lifting function of the spring tray through a reducer or directly drives the threaded nut. This device can significantly reduce the motor load, improve the energy efficiency of the system and reduce power consumption, while extending the service life of the equipment.

[0022] (3) The spring tray lifting device of the invention is widely applicable to automobile suspension, industrial equipment and other mechanical systems that require lifting and lowering adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the attached picture:

[0024] Figure 1 This is a schematic diagram of the structure of a motor spring tray lifting device proposed by the present invention;

[0025] Figure 2 A cross-sectional axial view of a motor and a planetary gear set according to the present invention;

[0026] Figure 3 A top-down view of a motor and a planetary gear set proposed by the present invention;

[0027] Figure 4 A cross-sectional axial view of the second type of motor and the planetary gear set proposed by the present invention;

[0028] Figure 5 This is a top-down view of the second type of motor proposed by the present invention.

[0029] In the figure: 101-a type upper spring tray, 102-a type piston assembly, 103-a type guide assembly, 104-a type damping cylinder, 105-a type upper compression spring, 106-a type middle spring tray, 107-an outer ring upper angular contact bearing, 108-a type motor housing, 109-a planetary gear set, 110-a middle angular contact bearing, 111-a type lower compression spring, 112-a type floating piston, 113-a type lower spring tray, 114-a type bottom cover, 115-an inner ring upper angular contact bearing, 116-a planetary gear support frame, 117-a type motor coil stator, 118-a type motor mover, 119-a lower angular contact bearing, 120-a type damper, 121-a type motor inner housing;

[0030] 201-Type II upper spring tray, 202-Type II piston assembly, 203-upper tapered roller bearing, 204-Type II guide assembly, 205-Type II upper compression spring, 206-Type II motor housing, 207-Type II motor coil stator, 208-Type II damping cylinder, 209-Type II motor mover, 210-Type II middle spring tray, 211-Type II motor inner housing, 212-lower tapered roller bearing, 213-Type II lower compression spring, 214-Type II lower spring tray, 215-Type II damper, 216-Type II bottom cover, 217-Type II floating piston, 218-lower support ring. DETAILED DESCRIPTION

[0031] Reference Figure 1 and Figure 4 A spring tray lifting device for reducing the output torque of a motor comprises a driving assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body and a damper body for connecting to the outside, the upper spring tray body, the middle spring tray body and the lower spring tray body are arranged in sequence from top to bottom along the damper body, the upper spring tray body is connected to the upper end of the telescopic part of the damper body, the lower spring tray body is connected to the lower end of the fixed part of the damper body, the driving assembly for displacing the middle spring tray body along the outer side of the damper body is transmission-connected to the middle spring tray body, an upper compression elastic body is provided between the upper spring tray body and the middle spring tray body, and a lower compression elastic body is provided between the lower spring tray body and the middle spring tray body.

[0032] Obviously, based on the above, when the load is fixed to the upper spring tray body, when the load compresses the telescopic end of the damper body to displace, the upper spring tray body connected to the damper body can also support the load. Thus, the spring system composed of the upper spring tray body, the middle spring tray body, the lower spring tray body, the upper compression elastomer and the lower compression elastomer can effectively support the load. At the same time, when the middle spring tray body is driven by the driving component to displace along the outer side of the damper body, the position of the middle spring tray body relative to the upper spring tray body and the lower spring tray body is changed. The driving component drives the displacement of the middle spring tray body to control the lifting and lowering of the upper spring tray body. Due to the existence of the spring system, part of the load can be supported, thereby effectively sharing the pressure of the driving component driving the load to lift.

[0033] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3 The damper body is a type-I damper 120, the upper spring tray body is a type-I upper spring tray 101, the middle spring tray body is a type-I middle spring tray 106, the lower spring tray body is a type-I lower spring tray 113, the driving assembly includes a type-I motor, the type-I motor includes a type-I motor housing 108 and a type-I motor inner housing 121, a mounting hole 1 that runs through the middle of the type-I motor inner housing 121 is provided, the type-I damper 120 is sleeved inside the mounting hole 1, a mounting hole 2 is provided inside the type-I motor housing 108, the type-I motor inner housing 121 can be rotatable inside the mounting hole 2, a type-I motor mover 118 is installed on the outside of the type-I motor inner housing 121, a type-I motor coil stator 117 is installed at the position corresponding to the type-I motor mover 118 inside the type-I motor housing 108, the type-I motor housing 108 An internal gear 1 is provided inside, and an external gear 1 is provided at a position corresponding to the internal gear 1 on the outside of the motor inner shell 121. The internal gear 1 and the external gear 1 are transmission connected through a meshing planetary gear set 109. A planetary gear support frame 116 is installed below the planetary gear set 109, and the planetary gear support frame 116 is rotatably connected to the inside of the motor shell 108. A type-one middle spring tray 106 is provided above the planetary gear set 109. The type-one middle spring tray 106 is rotatably connected to the inside of the motor shell 108 and the outside of the motor inner shell 121 respectively. An internal thread 1 is provided in the middle of the type-one middle spring tray 106. An external thread 1 matched with the internal thread 1 is provided on the outside of the type-one damping cylinder 104 of the type-one damper 120, and the type-one damping cylinder 104 is transmission connected to the type-one middle spring tray 106 through threads.

[0034] Obviously, based on the above, the type-one motor is an inner rotor rotation mode, the type-one motor coil is energized, the type-one motor mover 118 rotates to drive the type-one motor inner shell 121, and the type-one motor inner shell 121 rotates to drive the planetary gear set 109 to rotate, so that the type-one middle spring tray 106 can rotate. Since the type-one middle spring tray 106 is connected to the outer side of the type-one damping cylinder 104 through a threaded transmission, when the type-one upper spring tray 101 supports an external load, the type-one middle spring tray 106 rotates, so that the type-one middle spring tray 106 can be displaced along the outer side of the type-one damping cylinder 104, so that the type-one upper spring tray 101 can be raised and lowered by using the spring system.

[0035] It should be noted that the type I damper 120 is a common type of damper, which includes a type I piston assembly 102, a type I guide assembly 103, a type I damping cylinder 104, a type I floating piston 112 and a type I bottom cover 114. When the type I damper 120 supports a load, the type I piston assembly 102 is under the action of the load, and the internal piston can be displaced along the inner wall of the type I damping cylinder 104 under the guiding and limiting action of the type I guide assembly 103. Since this is the existing conventional structure of the type I damper 120 and does not involve structural improvements, it will not be repeated here.

[0036] In an optional embodiment, initially, a certain pre-compression force can be given to a type-one lower spring tray 113 by adjusting the relative positions of a type-one upper spring tray 101 and a type-one lower spring tray 113, and then the relative positions of a type-one middle spring tray 106 relative to a type-one upper spring tray 101 and a type-one lower spring tray 113 are adjusted so that the combined force of the upper compression elastomer and the lower compression elastomer is zero.

[0037] Obviously, based on the above, the output torque of a type of motor can be adjusted by adjusting the pre-pressure of the lower compression elastic body.

[0038] In this embodiment, refer to Figure 3 The type-one motor inner shell 121, the planetary gear support frame 116, the type-one middle spring tray 106 and the rotation center point of each set of planetary gear sets 109 all rotate along the same rotating shaft. A rotating shaft bearing is installed in the middle of each set of planetary gear sets 109. A connecting rod is sleeved inside the rotating shaft bearing. The upper end of the connecting rod is connected to the type-one middle spring tray 106, and the lower end of the connecting rod is connected to the planetary gear support frame 116.

[0039] Obviously, based on the above, the rotation of the type-1 motor inner shell 121 drives the planetary gear set 109 to rotate. Since the angular velocity of each set of planetary gears is the same, the angular velocity of each set of connecting rods is also the same. Therefore, the rotation of the planetary gear set 109 can drive the planetary gear support frame 116 and the type-1 middle spring tray 106 to rotate synchronously.

[0040] In this embodiment, refer to Figure 1and Figure 2 A lower angular contact bearing 119 is installed at the lower end of the type-one motor inner shell 121, and the type-one motor inner shell 121 is rotatably connected to the inside of the type-one motor outer shell 108 through the lower angular contact bearing 119. A middle angular contact bearing 110 is installed at the bottom of the planetary gear support frame 116, and the planetary gear support frame 116 is rotatably connected to the inside of the type-one motor outer shell 108 through the middle angular contact bearing 110. An outer ring upper angular contact bearing 107 is installed on the outer side of the type-one middle spring tray 106, and an inner ring upper angular contact bearing 115 is installed on the inner side of the type-one middle spring tray 106. The type-one middle spring tray 106 is rotatably connected to the inside of the type-one motor outer shell 108 and the outside of the type-one motor inner shell 121 through the outer ring upper angular contact bearing 107 and the inner ring upper angular contact bearing 115 respectively.

[0041] Obviously, based on the above, each rotating connection is connected through a corresponding bearing, which can effectively ensure the smoothness of the rotating connection.

[0042] In this embodiment, refer to Figure 1 The upper compression elastic body is a type of upper compression spring 105, and the lower compression elastic body is a type of lower compression spring 111.

[0043] Obviously, based on the above, the elastic body is set as a spring, which is convenient for material selection and also convenient for users to use.

[0044] In this embodiment, refer to Figure 4 and Figure 5 The damper body is a type II damper 215, the upper spring tray body is a type II upper spring tray 201, the middle spring tray body is a type II middle spring tray 210, the lower spring tray body is a type II lower spring tray 214, the driving assembly includes a type II motor, the type II motor includes a type II motor housing 206 and a type II motor inner housing 211, the middle of the type II motor inner housing 211 is provided with a mounting hole three that runs through from top to bottom, the type II damper 215 is installed inside the mounting hole three, the middle of the type II motor housing 206 is provided with a mounting hole four that runs through from top to bottom, The type-two motor housing 206 is rotatably connected to the outside of the type-two motor inner housing 211 through mounting hole four, a type-two motor mover 209 is installed on the inner side of the type-two motor housing 206, a type-two motor coil stator 207 is installed on the outer side of the type-two motor inner housing 211 at a position corresponding to the type-two motor mover 209, an outer side of the type-two motor housing 206 is provided with an outer thread two, an inner side of the type-two middle spring tray 210 is provided with an inner thread two matched with the outer thread two, and the type-two middle spring tray 210 is connected to the type-two motor housing 206 through threaded transmission.

[0045] Obviously, based on the above, the Type 2 motor is an outer rotor rotation mode, the Type 2 motor coil is energized, and the Type 2 motor mover 209 rotates to drive the Type 2 motor housing 206 to rotate. Since the Type 2 middle spring tray 210 is connected to the Type 2 motor housing 206 by threads, the Type 2 motor housing 206 rotates and drives the Type 2 middle spring tray 210 to move along the outer side of the Type 2 motor housing 206. Therefore, when the Type 2 upper spring tray 201 supports the external load, the Type 2 middle spring tray 210 can be displaced along the outer side of the Type 2 damper 215, so that the spring system can be used to adjust the Type 2 middle spring tray 210.

[0046] It should be noted that the type-2 damper 215 is a common type of damper, which includes a type-2 piston assembly 202, a type-2 guide assembly 204, a type-2 damping cylinder 208, a type-2 bottom cover 216 and a type-2 floating piston 217. When the type-2 damper 215 supports a load, under the action of the type-2 piston assembly 202 load, the internal piston can be displaced along the inner wall of the type-2 damping cylinder 208 under the guiding and limiting action of the type-2 guide assembly 204. Since this is the existing conventional structure of the type-2 damper 215 and does not involve structural improvements, it will not be elaborated here.

[0047] In an optional embodiment, initially, a certain pre-compression force can be given to the type-two lower compression spring 213 by adjusting the relative positions of the type-two upper spring tray 201 and the type-two lower spring tray 214, and then the relative positions of the type-two middle spring tray 210 relative to the type-two upper spring tray 201 and the type-two lower spring tray 214 are adjusted so that the combined force of the upper compression elastomer and the lower compression elastomer is zero.

[0048] Obviously, based on the above, the output torque of a type of motor can be adjusted by adjusting the pre-pressure of the lower compression elastic body.

[0049] In this embodiment, refer to Figure 4 The lower end of the type-2 motor housing 206 is connected with a lower support ring 218 for closing the lower end between the type-2 motor and the type-2 damper 215. The lower end of the outer side of the type-2 motor inner housing 211 is rotatably connected to the lower support ring 218 through a lower tapered roller bearing 212. The upper end of the outer side of the type-2 motor inner housing 211 is rotatably connected to the inner side of the type-2 motor housing 206 through an upper tapered roller bearing 203.

[0050] Obviously, based on the above, by setting a lower support ring 218 at the bottom of the type two motor, the lower part of the type two motor is closed, and the internal components of the motor are further supported and fixed. By setting the upper tapered roller bearing 203 and the lower tapered roller bearing 212, the lower support ring 218 and the type two motor housing 206 can rotate more smoothly.

[0051] In this embodiment, refer to Figure 4The upper compression elastic body is a type II upper compression spring 205, and the lower compression elastic body is a type II lower compression spring.

[0052] Obviously, based on the above, the elastic body is set as a spring, which is convenient for material selection and also convenient for users to use.

[0053] As another embodiment of the present application, this embodiment proposes a method for calculating the required output torque of the motor of a spring tray lifting device, including any one of the above-mentioned schemes of the spring tray lifting device for reducing the motor output torque. The formula for calculating the motor output torque is as follows:

[0054] T=K*D*FF 2 ;

[0055] Wherein, T represents the output torque required by the motor, in N*m; K represents the friction coefficient of the threaded connection of the middle spring tray body; D represents the nominal diameter of the thread at the threaded connection of the middle spring tray body, in m; F represents the axial load force of the upper compression elastic body, in N; F 2 Indicates the axial load force of the lower spring, in N.

[0056] Table 1 Required output torque of the motor when only the spring load is applied

[0057] Before adding the lower spring Lowest position Middle position Highest position Upper spring force / N 7535 7535 7535 Lower spring force / N 0 0 0 Motor force required / N 7535 7535 7535 Length of lower spring after compression / mm 0 0 0 K=0.1Minimum torque of the motor / N*m 60.28 60.28 60.28 K=0.2 Maximum torque of the motor / N*m 120.56 120.56 120.56

[0058] Referring to Table 1, when there is only upper spring load, the formula for calculating the motor output torque is as follows:

[0059] T=K*D*F

[0060] Table 2 Output torque required by the motor when the upper spring and lower spring are matched with load

[0061] After adding the lower spring Lowest position Middle position Highest position Upper spring force / N 7535 7535 7535 Lower spring force / N 10042.45 7618.41 5194.37 Motor force required / N 2507.45 83.41 2340.63 Length of lower spring after compression / mm 60 95 130 K=0.1Minimum torque of the motor / N*m 20.0596 0.66728 18.72504 K=0.2 Maximum torque of the motor / N*m 40.1192 1.33456 37.45008

[0062] Referring to Table 2, the required output torque value of the motor can be greatly reduced by matching the load with the upper spring and the lower spring.

[0063] As another embodiment of the present application, this embodiment proposes a suspension system, which includes any one of the above-mentioned spring tray lifting devices for reducing the output torque of the motor.

[0064] Obviously, based on the above, the suspension system can greatly reduce the motor output torque through the setting of the spring tray lifting device, reduce the burden on the motor and improve the energy efficiency of the system. In addition, it can also ensure the long-term operation stability and service life of the equipment.

Claims

1. A spring tray lifting device for reducing motor output torque, characterized in that: The invention comprises a driving assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body and a damper body for connecting with the outside, wherein the upper spring tray body, the middle spring tray body and the lower spring tray body are sequentially arranged along the damper body from top to bottom, the upper spring tray body is connected to the upper end of the telescopic part of the damper body, the lower spring tray body is connected to the lower end of the fixed part of the damper body, the driving assembly for displacing the middle spring tray body along the outer side of the damper body is transmission-connected to the middle spring tray body, an upper compression elastic body is arranged between the upper spring tray body and the middle spring tray body, and a lower compression elastic body is arranged between the lower spring tray body and the middle spring tray body.

2. A spring tray lifting device for reducing motor output torque according to claim 1, characterized in that: The damper body is a type I damper (120), the upper spring tray body is a type I upper spring tray (101), the middle spring tray body is a type I middle spring tray (106), the lower spring tray body is a type I lower spring tray (113), the drive assembly comprises a type I motor, the type I motor comprises a type I motor housing (108) and a type I motor inner housing (121), a mounting hole is provided in the middle of the type I motor inner housing (121) and runs through the motor from top to bottom, A type-one damper (120) is sleeved inside the first mounting hole; a second mounting hole is provided inside the first motor housing (108); the first motor inner housing (121) is rotatable inside the second mounting hole; a type-one motor mover (118) is installed outside the first motor inner housing (121); a type-one motor coil stator (117) is installed at a position corresponding to the first motor mover (118) inside the first motor housing (108); an internal gear (1) is provided inside the first motor housing (108); an external gear (1) is provided at a position corresponding to the internal gear (1) outside the first motor inner housing (121); the internal gear (1) and the external gear (1) are connected in transmission via a meshing planetary gear set (109); a planetary gear support frame (116) is installed below the planetary gear set (109); the planetary gear support frame (116) is rotatably connected to the inside of the first motor housing (108); a type-one middle spring tray is provided above the planetary gear set (109); (106), the type-one spring tray (106) is rotatably connected to the inside of the type-one motor housing (108) and the outside of the type-one motor inner housing (121), respectively; an internal thread one is provided in the middle of the type-one spring tray (106); an external thread one matching the internal thread one is provided on the outside of the type-one damping cylinder (104) of the type-one damper (120); the type-one damping cylinder (104) is connected to the type-one spring tray (106) via threaded transmission.

3. A spring tray lifting device for reducing motor output torque according to claim 2, characterized in that: The rotation center points of the first-type motor inner shell (121), the planetary gear support frame (116), the first-type middle spring tray (106) and each group of the planetary gear sets (109) all rotate along the same rotation axis, and a rotating shaft bearing is installed in the middle of each group of the planetary gear sets (109). A connecting rod is sleeved inside the rotating shaft bearing, and the upper end of the connecting rod is connected to the first-type middle spring tray (106), and the lower end of the connecting rod is connected to the planetary gear support frame (116).

4. A spring tray lifting device for reducing motor output torque according to claim 2, characterized in that: A lower angular contact bearing (119) is installed at the lower end of the first-type motor inner shell (121), and the first-type motor inner shell (121) is rotatably connected to the inside of the first-type motor outer shell (108) through the lower angular contact bearing (119); a middle angular contact bearing (110) is installed at the bottom of the planetary gear support frame (116), and the planetary gear support frame (116) is rotatably connected to the inside of the first-type motor outer shell (108) through the middle angular contact bearing (110); an outer ring upper angular contact bearing (107) is installed on the outer side of the first-type middle spring tray (106), and an inner ring upper angular contact bearing (115) is installed on the inner side of the first-type middle spring tray (106); the first-type middle spring tray (106) is rotatably connected to the inside of the first-type motor outer shell (108) and the outside of the first-type motor inner shell (121) through the outer ring upper angular contact bearing (107) and the inner ring upper angular contact bearing (115) respectively.

5. The spring tray lifting device for reducing motor output torque according to claim 2, characterized in that: The upper compression elastic body is a type of upper compression spring (105), and the lower compression elastic body is a type of lower compression spring (111).

6. The spring tray lifting device for reducing motor output torque according to claim 1, characterized in that: The damper body is a type II damper (215), the upper spring tray body is a type II upper spring tray (201), the middle spring tray body is a type II middle spring tray (210), the lower spring tray body is a type II lower spring tray (214), the drive assembly comprises a type II motor, the type II motor comprises a type II motor housing (206) and a type II motor inner housing (211), a mounting hole three penetrating vertically is provided in the middle of the type II motor inner housing (211), the type II damper (215) is installed inside the mounting hole three, a mounting hole four penetrating vertically is provided in the middle of the type II motor housing (206), the type II The motor housing (206) is rotatably connected to the outside of the second-type motor inner housing (211) through the fourth mounting hole; a second-type motor mover (209) is mounted on the inner side of the second-type motor housing (206); a second-type motor coil stator (207) is mounted on the outer side of the second-type motor inner housing (211) at a position corresponding to the second-type motor mover (209); an outer side of the second-type motor housing (206) is provided with a second external thread; an inner side of the second-type middle spring tray (210) is provided with a second internal thread matched with the second external thread; and the second-type middle spring tray (210) is connected to the second-type motor housing (206) through threaded transmission.

7. A spring tray lifting device for reducing motor output torque according to claim 6, characterized in that: The lower end of the second-type motor housing (206) is connected to a lower support ring (218) for sealing the lower end between the second-type motor and the second-type damper (215); the lower end of the outer side of the second-type motor inner housing (211) is rotatably connected to the lower support ring (218) via a lower tapered roller bearing (212); and the upper end of the outer side of the second-type motor inner housing (211) is rotatably connected to the inner side of the second-type motor housing (206) via an upper tapered roller bearing (203).

8. The spring tray lifting device for reducing motor output torque according to claim 6, characterized in that: The upper compression elastic body is a type II upper compression spring (205), and the lower compression elastic body is a type II lower compression spring.

9. A method for calculating the required output torque of a motor of a spring tray lifting device, characterized in that: A spring tray lifting device for reducing the motor output torque as described in any one of claims 1 to 8, wherein the motor output torque calculation method is as follows: T = K*D*(F-F2); Among them, T represents the required output torque of the motor, in N*m; K represents the friction coefficient at the threaded connection of the middle spring tray body; D represents the nominal diameter of the thread at the threaded connection of the middle spring tray body, in m; F represents the axial load force of the upper compression elastic body, in N; F2 represents the axial load force of the lower spring, in N.

10. A suspension system, characterized in that: A spring tray lifting device comprising a device for reducing the output torque of a motor as described in any one of claims 1 to 8.

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