Spring tray lifting device for reducing motor output torque

Abstract

The application discloses a spring tray lifting device capable of reducing motor output torque, 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 external connection, wherein the upper spring tray body, the middle spring tray body and the lower spring tray body are sequentially arranged from top to bottom along the damper body, the driving assembly is in transmission connection with the middle spring tray body and used for enabling the middle spring tray body to displace along the outer side of the damper 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 application can not only effectively share the motor load, but also improve the overall energy efficiency of the lifting system, reduce the power consumption of the motor and prolong the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of spring pallet lifting technology, and in particular to a spring pallet lifting device that reduces the output torque of a motor. Background Technology

[0002] With the continuous advancement of mechanical technology and the diversification of application demands, an increasing number of industrial and automotive systems require efficient and precise lifting and adjustment devices, especially in suspension systems and various automated equipment. However, existing lifting devices typically rely on motors to directly drive the load, resulting in high motor output torque, increased motor load, and reduced system energy efficiency. Furthermore, high-load motor operation leads to increased power consumption, affecting the long-term operational stability and lifespan of the equipment.

[0003] Traditional electric lifting systems typically use a motor to directly drive the lifting mechanism. However, due to factors such as friction, load variations, and system rigidity, the motor needs to output a large torque to overcome these resistances. This design not only increases the motor's power consumption but may also lead to motor overheating, increased noise, and a shortened equipment lifespan.

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

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

[0006] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one object of this invention is to provide a spring tray lifting device that reduces motor output torque, effectively reducing motor output torque, improving system efficiency, enabling stable operation over long periods, and minimizing the load on the motor and mechanical components.

[0007] In a first aspect, the present invention proposes a spring tray lifting device for reducing motor output torque, comprising a drive assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body, and a damper body for external connection. The upper spring tray body, the middle spring tray body, and the lower spring tray body are arranged sequentially 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, and the lower spring tray body is connected to the lower end of the fixed part of the damper body. The drive assembly for displacing the middle spring tray body along the outside of the damper body is drively 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.

[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, and the drive assembly includes a type I motor. The type I motor includes a type I motor housing and a type I motor inner housing. A through mounting hole is provided in the center of the type I motor inner housing, and the type I damper is fitted inside the first mounting hole. A second mounting hole is provided inside the type I motor housing, and the type I motor inner housing is rotatable within the second mounting hole. A type I motor mover is mounted on the outside of the type I motor inner housing, and a type I motor coil stator is mounted inside the type I motor housing at a position corresponding to the position of the type I motor mover. An internal gear is provided inside the outer casing, and an external gear is provided on the outer side of the inner casing of the motor corresponding to the internal gear. The internal gear and the external gear are connected by a meshing planetary gear set. A planetary gear support frame is installed below the planetary gear set and is rotatably connected to the inside of the motor casing. A medium spring tray is provided above the planetary gear set and is rotatably connected to both the inside and outside of the motor casing. An internal thread is provided in the middle of the medium spring tray. An external thread matching the internal thread is provided on the outer side of the damping cylinder of the damper. The damping cylinder and the medium spring tray are connected by a threaded drive.

[0009] Preferably, the rotation center points of the type I motor inner housing, the planetary gear support frame, the type I intermediate spring tray, and each set of planetary gears all rotate along the same axis. A shaft bearing is installed in the middle of each set of planetary gears. A connecting rod is sleeved inside the shaft bearing. The upper end of the connecting rod is connected to the type I intermediate 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 inner housing of the type I motor, and the inner housing of the type I motor is rotatably connected to the interior of the outer casing of the type I motor 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 interior of the outer casing of the type I motor through the middle angular contact bearing. An outer ring upper angular contact bearing is installed on the outer side of the type I middle spring tray, and an inner ring upper angular contact bearing is installed on the inner side of the type I middle spring tray. The type I middle spring tray is rotatably connected to the interior of the outer casing of the type I motor and the exterior of the inner housing of the type I motor through the outer ring upper angular contact bearing and the inner ring upper angular contact bearing, respectively.

[0011] Preferably, the upper compression elastic body is an upper compression spring, and the lower compression elastic body is a 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, and the lower spring tray body is a type II lower spring tray. The drive assembly includes a type II motor, which includes a type II motor housing and a type II motor inner housing. The type II motor inner housing has a through mounting hole three in the middle, and the type II damper is installed inside the through mounting hole three. The type II motor housing has a through mounting hole four in the middle, and the type II motor housing is rotatably connected to the outside of the type II motor inner housing through the through mounting hole four. A type II motor mover is installed on the inside of the type II motor housing, and a type II motor coil stator is installed on the outside of the type II motor inner housing at the position corresponding to the mover. An external thread two is provided on the outside of the type II motor housing, and an internal thread two adapted to the external thread two is provided on the inside of the type II middle spring tray. The type II middle spring tray and the type II motor housing are connected by a threaded drive.

[0013] Preferably, the lower end of the type II motor housing is connected to a lower support ring for sealing the lower end between the type II motor and the type II damper. The lower end of the outer side of the type II motor inner housing is rotatably connected to the lower support ring through a lower tapered roller bearing. The upper end of the outer side of the type II motor inner housing is rotatably connected to the inner side of the type II motor housing through 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] Secondly, the present invention proposes a method for calculating the required output torque of a motor in a spring pallet lifting device, which includes any of the above-mentioned schemes for reducing the output torque of a spring pallet lifting device. The formula for calculating the output torque of the motor is as follows: T=K*D*(F-F2).

[0016] Where 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; and F2 represents the axial load force of the lower spring, in N.

[0017] Thirdly, the present invention proposes a suspension system that includes any of the above-mentioned spring tray lifting devices for reducing motor output torque.

[0018] The beneficial effects of this invention are:

[0019] (1) A double compression spring structure is configured between the coil spring tray of the type I motor drive structure and the hollow motor, or a double compression spring structure is configured at both ends of the coil spring tray of the type II direct drive structure. The elastic deformation part of the lower compression spring supports the type I motor drive or type II direct drive structure, thereby effectively reducing the output torque of the motor.

[0020] (2) The hollow motor achieves the lifting function of the spring tray by means of a reducer or by directly driving the coiled 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.

[0021] (3) The spring tray lifting device of this invention is widely applicable to automobile suspension, industrial equipment and other mechanical systems that require lifting adjustment. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the structure of a motor spring tray lifting device proposed in this invention;

[0024] Figure 2 This is a cross-sectional axonometric view of a type of motor and planetary gear set proposed in this invention;

[0025] Figure 3 This is a top-down view of a type of motor and planetary gear set proposed in this invention.

[0026] Figure 4 This is a schematic diagram of the structure of the Type II motor spring tray lifting device proposed in this invention;

[0027] Figure 5 This is a top-down view of the type II motor proposed in this invention.

[0028] In the diagram: 101-Type I upper spring tray, 102-Type I piston assembly, 103-Type I guide assembly, 104-Type I damping cylinder, 105-Type I upper compression spring, 106-Type I middle spring tray, 107-Outer ring upper angular contact bearing, 108-Type I motor housing, 109-Planetary gear set, 110-Middle angular contact bearing, 111-Type I lower compression spring, 112-Type I floating piston, 113-Type I lower spring tray, 114-Type I bottom cover, 115-Inner ring upper angular contact bearing, 116-Planetary gear support frame, 117-Type I motor coil stator, 118-Type I motor mover, 119-Lower angular contact bearing, 120-Type I damper, 121-Type I motor inner housing;

[0029] 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 Implementation

[0030] Reference Figure 1 and Figure 4 A spring tray lifting device for reducing motor output torque includes a drive assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body, and a damper body for external connection. The upper spring tray body, the middle spring tray body, and the lower spring tray body are arranged sequentially 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, and the lower spring tray body is connected to the lower end of the fixed part of the damper body. The drive assembly for displacing the middle spring tray body along the outside of the damper body is 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.

[0031] Obviously, based on the above, when the load is fixed to the upper spring tray body, when the load compresses the extension end of the damper body, 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, and the upper and lower compression elastic bodies can effectively support the load. At the same time, when the drive component drives the middle spring tray body to move along the outside of the damper body, it changes the position of the middle spring tray body relative to the upper and lower spring tray bodies. The drive component can control the lifting and lowering of the upper spring tray body by driving the middle spring tray body to move. Since the existence of the spring system can support part of the load, it can effectively share the pressure of the drive component driving the load to lift and lower.

[0032] In this embodiment, refer to Figure 1 , Figure 2 and Figure 3 The damper body is a type 1 damper 120, the upper spring tray body is a type 1 upper spring tray 101, the middle spring tray body is a type 1 middle spring tray 106, and the lower spring tray body is a type 1 lower spring tray 113. The drive assembly includes a type 1 motor, which includes a type 1 motor housing 108 and a type 1 motor inner housing 121. A through mounting hole 1 is provided in the middle of the type 1 motor inner housing 121, and the type 1 damper 120 is fitted inside the through mounting hole 1. A second mounting hole is provided inside the type 1 motor housing 108, and the type 1 motor inner housing 121 can rotatably reside inside the second mounting hole. A type 1 motor mover 118 is installed on the outside of the type 1 motor inner housing 121. A type 1 motor coil stator 117 is installed inside the type 1 motor housing 108 at a position corresponding to the type 1 motor mover 118. An internal gear is provided inside the motor housing 121. An external gear is provided on the outer side of the motor housing 121 at the position corresponding to the internal gear. The internal gear and the external gear are connected by 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 motor housing 108. A medium spring tray 106 is provided above the planetary gear set 109. The medium spring tray 106 is rotatably connected to the inside of the motor housing 108 and the outer side of the motor housing 121. An internal thread is provided in the middle of the medium spring tray 106. An external thread matching the internal thread is provided on the outer side of the damping cylinder 104 of the damper 120. The damping cylinder 104 and the medium spring tray 106 are connected by a threaded transmission.

[0033] Obviously, based on the above, the type I motor is an internal rotor rotation type. When the type I motor coil is energized, the type I motor mover 118 rotates, driving the type I motor inner housing 121. The rotation of the type I motor inner housing 121 drives the planetary gear set 109 to rotate, thereby making the type I middle spring tray 106 rotatable. Since the type I middle spring tray 106 is connected to the outer side of the type I damping cylinder 104 through threaded transmission, when the type I upper spring tray 101 supports an external load, the type I middle spring tray 106 rotates, allowing the type I middle spring tray 106 to be displaced along the outer side of the type I damping cylinder 104. Thus, the type I upper spring tray 101 can be adjusted for lifting and lowering using the spring system.

[0034] It should be noted that the type 1 damper 120 is a common type of damper, which includes a type 1 piston assembly 102, a type 1 guide assembly 103, a type 1 damping cylinder 104, a type 1 floating piston 112, and a type 1 bottom cover 114. When the type 1 damper 120 supports a load, the piston inside the type 1 piston assembly 102 can be displaced along the inner wall of the type 1 damping cylinder 104 under the guidance and limiting action of the type 1 guide assembly 103. Since this is the existing conventional structure of the type 1 damper 120 and does not involve structural improvements, it will not be described in detail here.

[0035] In an optional embodiment, initially, a certain pre-compression force can be applied to the lower spring tray 113 by adjusting the relative positions of the upper spring tray 101 and the lower spring tray 113. Then, by adjusting the relative positions of the middle spring tray 106 with respect to the upper spring tray 101 and the lower spring tray 113, the resultant force of the upper and lower compression elastomers is zero.

[0036] Obviously, based on the above, the output torque of a motor can be adjusted by adjusting the pre-pressure of the compressed elastomer.

[0037] In this embodiment, refer to Figure 3 The rotation center points of the type-1 motor inner housing 121, the planetary gear support frame 116, the type-1 intermediate spring tray 106, and each set of planetary gears 109 all rotate along the same axis. Each set of planetary gears 109 has a rotating shaft bearing installed in the middle. A connecting rod is sleeved inside the rotating shaft bearing. The upper end of the connecting rod is connected to the type-1 intermediate spring tray 106, and the lower end of the connecting rod is connected to the planetary gear support frame 116.

[0038] Obviously, based on the above, the rotation of the inner housing 121 of the type motor drives the planetary gear set 109 to rotate. Since the angular velocity of each planetary gear set is the same, the angular velocity of each connecting rod set is also the same. Therefore, the rotation of the planetary gear set 109 can drive the planetary gear support frame 116 and the type spring tray 106 to rotate synchronously.

[0039] In this embodiment, refer to Figure 1and Figure 2 A lower angular contact bearing 119 is installed at the lower end of the inner housing 121 of a type motor. The inner housing 121 of a type motor is rotatably connected to the inside of the outer housing 108 of a type motor 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. The planetary gear support frame 116 is rotatably connected to the inside of the outer housing 108 of a type motor through the middle angular contact bearing 110. An outer ring upper angular contact bearing 107 is installed on the outer side of the middle spring tray 106 of a type motor. An inner ring upper angular contact bearing 115 is installed on the inner side of the middle spring tray 106 of a type motor. The middle spring tray 106 of a type motor is rotatably connected to the inside of the outer housing 108 of a type motor and the outside of the inner housing 121 of a type motor through the outer ring upper angular contact bearing 107 and the inner ring upper angular contact bearing 115, respectively.

[0040] Obviously, based on the above, the smoothness of the rotating connection can be effectively guaranteed by connecting each rotating joint with a corresponding bearing.

[0041] 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.

[0042] Obviously, based on the above, setting the elastomer as a spring makes material selection convenient and also makes it easier for users to use.

[0043] 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, and the lower spring tray body is a type II lower spring tray 214. The drive assembly includes a type II motor, which includes a type II motor housing 206 and a type II motor inner housing 211. The inner housing 211 has a through mounting hole 3 in the middle, and the type II damper 215 is installed inside the through mounting hole 3. The motor housing 206 has a through mounting hole 4 in the middle. The type II motor housing 206 is rotatably connected to the type II motor inner housing 211 via mounting hole four. A type II motor mover 209 is installed on the inner side of the type II motor housing 206. A type II motor coil stator 207 is installed on the outer side of the type II motor inner housing 211 at the position corresponding to the type II motor mover 209. An external thread two is provided on the outer side of the type II motor housing 206. An internal thread two is provided on the inner side of the type II spring tray 210 that matches the external thread two. The type II spring tray 210 and the type II motor housing 206 are connected by threaded transmission.

[0044] Obviously, based on the above, the Type II motor is an external rotor rotation type. When the Type II motor coil is energized, the Type II motor mover 209 rotates, causing the Type II motor housing 206 to rotate. Since the Type II middle spring tray 210 is connected to the Type II motor housing 206 by threads, the rotation of the Type II motor housing 206 causes the Type II middle spring tray 210 to move along the outside of the Type II motor housing 206. Thus, when the Type II upper spring tray 201 supports the external load, the Type II middle spring tray 210 can move along the outside of the Type II damper 215, thereby allowing the spring system to be used to adjust the height of the Type II middle spring tray 210.

[0045] It should be noted that the Type II damper 215 is a common type of damper, which includes a Type II piston assembly 202, a Type II guide assembly 204, a Type II damping cylinder 208, a Type II bottom cover 216, and a Type II floating piston 217. When the Type II damper 215 supports a load, under the load of the Type II piston assembly 202, the internal piston can be displaced along the inner wall of the Type II damping cylinder 208 under the guiding and limiting action of the Type II guide assembly 204. Since this is the existing conventional structure of the Type II damper 215 and does not involve structural improvements, it will not be described in detail here.

[0046] In an optional embodiment, initially, the lower compression spring 213 can be given a certain pre-compression force by adjusting the relative positions of the upper spring tray 201 and the lower spring tray 214. Then, by adjusting the relative positions of the middle spring tray 210 relative to the upper spring tray 201 and the lower spring tray 214, the resultant force of the upper compression elastomer and the lower compression elastomer is zero.

[0047] Obviously, based on the above, the output torque of a motor can be adjusted by adjusting the pre-pressure of the compressed elastomer.

[0048] In this embodiment, refer to Figure 4 The lower end of the type II motor housing 206 is connected to a lower support ring 218 for sealing the lower end between the type II motor and the type II damper 215. The lower outer end of the type II motor inner housing 211 is rotatably connected to the lower support ring 218 through a lower tapered roller bearing 212. The upper outer end of the type II motor inner housing 211 is rotatably connected to the inner side of the type II motor housing 206 through an upper tapered roller bearing 203.

[0049] Obviously, based on the above, by setting a lower support ring 218 at the bottom of the type II motor, the lower part of the type II motor is enclosed, and the internal components of the motor are further supported and fixed. The setting of the upper tapered roller bearing 203 and the lower tapered roller bearing 212 makes the lower support ring 218 and the type II motor housing 206 rotate more smoothly.

[0050] 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.

[0051] Obviously, based on the above, setting the elastomer as a spring makes material selection convenient and also makes it easier for users to use.

[0052] As another embodiment of this application, this embodiment proposes a method for calculating the required output torque of the motor of a spring pallet lifting device, including any of the above-mentioned schemes for reducing the output torque of the motor of a spring pallet lifting device. The formula for calculating the output torque of the motor is as follows: T=K*D*F-F2;

[0053] Where 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; and F2 represents the axial load force of the lower spring, in N.

[0054] Table 1. Required output torque of the motor under spring load only.

[0055] 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 Force required for motor / N 7535 7535 7535 Length of lower spring after compression / mm 0 0 0 K = 0.1 Minimum torque output by the motor / N*m 60.28 60.28 60.28 K = 0.2 (maximum torque output by the motor) / N*m 120.56 120.56 120.56

[0056] Referring to Table 1, the formula for calculating the motor output torque when only the upper spring load is applied is as follows:

[0057] T=K*D*F

[0058] Table 2. Required output torque of the motor when the upper and lower springs are in combination under load.

[0059] 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 Force required for motor / N 2507.45 83.41 2340.63 Length of lower spring after compression / mm 60 95 130 K = 0.1 Minimum torque output by the motor / N*m 20.0596 0.66728 18.72504 K = 0.2 (maximum torque output by the motor) / N*m 40.1192 1.33456 37.45008

[0060] Referring to Table 2, when the upper and lower springs work together to apply the load, the required output torque of the motor can be greatly reduced.

[0061] As another embodiment of this application, this embodiment proposes a suspension system that includes any of the above-described spring tray lifting devices for reducing motor output torque.

[0062] Clearly, based on the above, the suspension system, with its spring tray lifting device, can significantly reduce the motor's output torque, lessen the motor's burden, and improve the system's energy efficiency. Furthermore, it ensures long-term operational stability and extends the equipment's lifespan.

Claims

1. A spring tray lifting device for reducing motor output torque, characterized in that: The device includes a drive assembly, an upper spring tray body, a middle spring tray body, a lower spring tray body, and a damper body for external connection. The upper spring tray body, the middle spring tray body, and the lower spring tray body are arranged sequentially 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, and the lower spring tray body is connected to the lower end of the fixed part of the damper body. The drive assembly, which allows the middle spring tray body to move along the outside of the damper body, is drively 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. 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), and the lower spring tray body is a type I lower spring tray (113). The drive assembly includes a type I motor, which includes a type I motor housing (108) and a type I motor inner housing (121). The type I motor inner housing (121) has a through mounting hole in the middle. The type I damper (120) is fitted inside the first mounting hole. The type I motor housing (108) has a second mounting hole inside. The type I motor inner housing (121) can rotate inside the second mounting hole. 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 inside the type I motor housing (108) at the position corresponding to the type I motor mover (118). An internal gear is provided inside the motor housing (121), and an external gear is provided on the outer side of the motor housing (121) at the position corresponding to the internal gear. The internal gear and the external gear are connected by 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 housing (108). A medium spring tray is provided above the planetary gear set (109). (106) The type-1 spring tray (106) is rotatably connected to the inside of the type-1 motor housing (108) and the outside of the type-1 motor inner housing (121). The type-1 spring tray (106) has an internal thread in the middle. The type-1 damper (120) has an external thread (104) on the outside that is compatible with the internal thread. The type-1 damper (104) and the type-1 spring tray (106) are connected by a threaded drive.

2. The spring tray lifting device for reducing motor output torque according to claim 1, characterized in that: The rotation center points of the type I motor inner shell (121), the planetary gear support frame (116), the type I middle spring tray (106), and each set of planetary gears (109) all rotate along the same axis. A shaft bearing is installed in the middle of each set of planetary gears (109). A connecting rod is sleeved inside the shaft bearing. The upper end of the connecting rod is connected to the type I middle spring tray (106), and the lower end of the connecting rod is connected to the planetary gear support frame (116).

3. The spring tray lifting device for reducing motor output torque according to claim 1, characterized in that: A lower angular contact bearing (119) is installed at the lower end of the inner housing (121) of the type-1 motor. The inner housing (121) of the type-1 motor is rotatably connected to the interior of the outer casing (108) of the type-1 motor 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). The planetary gear support frame (116) is rotatably connected to the interior of the outer casing (108) of the type-1 motor through the middle angular contact bearing (110). An outer ring upper angular contact bearing (107) is installed on the outer side of the type-1 middle spring tray (106). An inner ring upper angular contact bearing (115) is installed on the inner side of the type-1 middle spring tray (106). The type-1 middle spring tray (106) is rotatably connected to the interior of the outer casing (108) of the type-1 motor and the exterior of the inner housing (121) of the type-1 motor through the outer ring upper angular contact bearing (107) and the inner ring upper angular contact bearing (115), respectively.

4. The spring tray lifting device for reducing motor output torque according to claim 1, 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).

5. A spring tray lifting device for reducing motor output torque according to any one of claims 1-4, characterized in that, The formula for calculating the motor output torque is as follows: T = K * D *（ F - F 2）； in, T This indicates the required output torque of the motor, in N*m; K This indicates the coefficient of friction at the threaded connection of the spring tray body; D This indicates the nominal diameter of the thread at the threaded connection of the spring tray body, in meters (m). F This represents the axial load force on the compressive elastomer, in N; F 2 indicates the axial load force of the lower spring, in N.

6. A suspension system, characterized in that: A spring tray lifting device for reducing motor output torque as described in any one of claims 1-4.

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