An ultra-low speed large torque lifting transmission device and method

Abstract

The present application belongs to the related technical field of high-speed precision gear transmission, and particularly relates to an ultra-low-speed large-torque lifting transmission device, which comprises a movable base, the upper end of the movable base is provided with a lifting frame, a lifting seat protruding to the outside is slidably connected in the lifting frame, one end of the lifting seat protruding outside the lifting frame is connected with a lifting plugboard, a transmission screw threadedly connected with the lifting seat is rotatably connected in the lifting frame, the lifting frame and the top end of the transmission screw are connected with a mounting plate, the upper end of the mounting plate is provided with a power assembly, the built-in torque conversion assembly of the power assembly comprises two torque conversion paths, two torque inner gear plates are arranged near and away from an output motor, the meshing relationship of the gear plates is utilized, the input rotating speed and torque are twice continuously converted, the power source with high rotating speed and low torque is efficiently converted into the power with low rotating speed and large torque, and secondary speed reduction and torque increase are realized to meet the transmission requirements under different working conditions.

Description

Technical Field

[0001] This invention belongs to the technical field of high-speed precision gear transmission, specifically relating to an ultra-low speed, high torque lifting transmission device and method. Background Technology

[0002] Currently, traditional lifting devices mostly use a single-ratio gear transmission structure to achieve lifting functions. However, a single-ratio gear transmission cannot adjust the output torque and speed according to the load weight, making it difficult to meet the needs of rapid lifting under light loads and stable low-speed operation under heavy loads.

[0003] To address the aforementioned issues, this patent proposes a lifting transmission device capable of switching transmission modes according to the load, thereby resolving the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide an ultra-low speed, high torque lifting transmission device and method to solve the problem mentioned in the background art that traditional lifting devices mostly use a single transmission ratio gear transmission structure, which cannot adjust the output torque and speed according to the load weight.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultra-low speed, high torque lifting transmission device, comprising a movable base, a lifting frame provided at the upper end of the movable base, and a lifting seat protruding to the outside slidably connected inside the lifting frame, a lifting insert plate connected to one end of the lifting seat protruding outside the lifting frame, a transmission screw threadedly connected inside the lifting frame and threadedly connected to the lifting seat, and a mounting plate connected to the top of the lifting frame and the transmission screw, a power component provided at the upper end of the mounting plate, and providing rotational power to the transmission screw through the power component, and being able to provide power of different magnitudes of torque to the transmission screw.

[0006] Preferably, the power assembly includes a transmission box, the upper end of the mounting plate is fixed with the transmission box, and the lower end of the transmission box has a first transmission shaft inserted into the upper end of the transmission screw. The upper end of the first transmission shaft is connected to a first helical gear located inside the transmission box, and a second helical gear meshes with the outside of the first helical gear.

[0007] Preferably, a torque converter frame is provided on the upper side inside the transmission box, and two clutch frames are provided on the lower side inside the transmission box. An output motor is provided on the outside of the transmission box, and the output shaft of the output motor passes through the inside of the transmission box.

[0008] Preferably, the torque converter frame is provided with a torque converter assembly connected to the output shaft of the output motor and used for speed reduction and torque increase, and a control assembly is provided between the two clutch frames, which is connected between the torque converter assembly and the second helical gear and used to control the magnitude of the output torque.

[0009] Preferably, the torque converter assembly includes a torque converter internal gear disk, and two torque converter internal gear disks coaxial with the output shaft of the output motor are symmetrically arranged inside the torque converter frame. The torque converter internal gear disk on the side closer to the output motor is connected to a speed reduction shaft that passes through the interior of the other torque converter internal gear disk at the center of the end away from the output motor.

[0010] Preferably, the torque converter frame is internally connected to a limiting frame sleeved on the outside of the speed reduction shaft and rotatably connected to the speed reduction shaft. The output shaft of the output motor and the axial ends of the speed reduction shaft located inside the torque converter internal gear disk are both connected to output gears.

[0011] Preferably, both output gears are externally meshed with multiple transmission gears that mesh with the inner wall of the torque converter internal gear disk, and the multiple transmission gears are rotatably connected to the inner wall of the torque converter frame through a limiting shaft, and a first clutch helical gear is provided at one end of each of the two torque converter internal gear disks.

[0012] Preferably, the control component includes a second drive shaft, and the second helical gear is externally connected to a second drive shaft that passes through the interior of the two clutch frames. The second drive shaft is composed of a cylindrical shaft, a square shaft, and a limiting sleeve. The square shaft of the second drive shaft is sleeved with a second clutch helical gear that meshes with the torque converter component.

[0013] Preferably, the lower end of the second clutch helical gear is sleeved with an adjusting frame that is slidably connected to the inner wall of the transmission box and rotatably connected to the adjusting frame. The adjusting frame is externally connected to an adjusting internal threaded tube. An adjusting motor is provided outside the transmission box, located below the output motor, and the output shaft of the adjusting motor passes through the inside of the transmission box and is threadedly connected to the adjusting internal threaded tube.

[0014] A method for lifting transmission at ultra-low speed and high torque, comprising the following steps: Step 1: Determine the output torque and select a large or small torque based on the weight of the goods being transported; Step 2: Control the output torque. By controlling the different engagement positions of the control component and the torque converter component, the torque output of the power component to the transmission screw is controlled, and the transmission screw drives the lifting seat and the lifting plate to lift and transport the items. Step 3: Power output. The power component drives the transmission screw to rotate, and through the threaded connection between the lifting seat and the transmission screw, it drives the lifting seat to slide up and down inside the lifting frame. At the same time, the lifting seat drives the lifting plate to move up and down, realizing the lifting and transportation of items.

[0015] Compared with the prior art, the present invention provides an ultra-low speed, high torque lifting transmission device and method, which has the following beneficial effects: 1. The torque converter built into the power assembly of the present invention includes two torque conversion paths. By setting two torque conversion internal gear disks at positions close to and far from the output motor, and utilizing the meshing relationship of large and small gears, two continuous conversions of input speed and torque are realized. The high-speed, low-torque power source output is efficiently converted into low-speed, high-torque power, and secondary speed reduction and torque increase can be performed to meet the transmission requirements under different working conditions.

[0016] 2. The control component of this invention precisely controls the operation of the adjusting motor through a controller, and the adjusting motor drives the adjusting internal helical tube and the adjusting frame to move, thereby driving the second clutch helical gear to mesh and switch between the two first clutch helical gears. When meshing with the first clutch helical gear closer to the output motor, it outputs high speed and low torque; when meshing with the first clutch helical gear farther from the output motor, it outputs low speed and high torque. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of the lifting transmission device of the present invention.

[0018] Figure 2 This is a second-view three-dimensional structural diagram of the lifting transmission device of the present invention.

[0019] Figure 3 This is an exploded structural diagram of the lifting transmission device of the present invention.

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the power component of the present invention.

[0021] Figure 5 This is a schematic diagram of the connection structure between the torque converter component and the control component of the present invention.

[0022] Figure 6 This is an exploded structural diagram of the torque converter assembly of the present invention.

[0023] Figure 7 This is a schematic diagram of the torque-changing internal gear disk connection structure of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the control component of the present invention.

[0025] Figure 9 This is a three-dimensional cross-sectional structural diagram of the control component of the present invention.

[0026] In the diagram: 1. Movable base; 2. Lifting frame; 3. Lifting seat; 4. Lifting insert plate; 5. Transmission screw; 6. Mounting plate; 7. Transmission box; 8. First transmission shaft; 9. First helical gear; 10. Second helical gear; 11. Torque converter frame; 12. Clutch frame; 13. Output motor; 14. Torque converter internal gear disc; 15. Speed ​​reduction shaft; 16. Limit frame; 17. Output gear; 18. Transmission gear; 19. First clutch helical gear; 20. Second transmission shaft; 21. Second clutch helical gear; 22. Adjustment frame; 23. Adjustment internal screw tube; 24. Adjustment motor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This invention provides, for example Figures 1-9The ultra-low speed, high torque lifting transmission device shown includes a movable base 1, a lifting frame 2 mounted on the upper end of the movable base 1, and a lifting seat 3 protruding outwards slidably connected inside the lifting frame 2. A lifting insert plate 4 is connected to one end of the lifting seat 3 protruding outwards from the lifting frame 2. A transmission screw 5, threadedly connected to the lifting seat 3, is rotatably connected inside the lifting frame 2. A mounting plate 6 is connected to the top of the lifting frame 2 and the transmission screw 5. A power component is mounted on the upper end of the mounting plate 6, providing rotational power to the transmission screw 5 and capable of providing different... The power unit, which provides power at varying torques, includes a transmission box 7. The transmission box 7 is fixed to the upper end of the mounting plate 6, and a first drive shaft 8, inserted into the upper end of the transmission screw 5, passes through the lower end of the transmission box 7. A first helical gear 9 located inside the transmission box 7 is connected to the upper end of the first drive shaft 8, and a second helical gear 10 meshes with the external part of the first helical gear 9. A torque converter frame 11 is installed on the upper side inside the transmission box 7, and two clutch frames 12 are installed on the lower side inside the transmission box 7. An output motor 13 is installed outside the transmission box 7, and the output shaft of the output motor 13 passes through the transmission box 7. Inside, the torque converter frame 11 houses a torque converter assembly connected to the output shaft of the output motor 13 for speed reduction and torque increase. Between the two clutch frames 12, a control assembly is connected between the torque converter assembly and the second helical gear 10 to control the magnitude of the output torque. During the transmission of the transmission screw 5, the upper end of the moving base 1 is equipped with a power storage cabinet for power supply, a controller for controlling the power assembly, and a directional control handle for controlling the movement direction of the moving base 1. The control handle and the power assembly are electrically connected to the controller via wiring harnesses, and electrically connected to the power storage cabinet via the controller and wiring harnesses. At this time, the power assembly can select to output large or small torque according to the weight of the transported items, and controls the engagement position of the control assembly and the torque converter assembly through the controller, thereby controlling the magnitude of the torque output by the power assembly to the transmission screw 5. This allows the transmission screw 5 to drive the lifting seat 3 and the lifting plate 4 to lift and transport the items. The transmission screw 5 drives the lifting seat 3 to slide up and down inside the lifting frame 2 through a threaded connection with the lifting seat 3, while the lifting seat 3 drives the lifting plate 4 to move up and down, thereby realizing the lifting and transport of the items.

[0029] The first drive shaft 8 and the drive screw 5 are provided with interlocking pins and slots. The output motor 13 in the power assembly is electrically connected to the controller through a wiring harness. When the output motor 13 is started, it can transmit power to the second helical gear 10 through the torque converter assembly and the control assembly. The torque converter assembly can reduce the transmission speed and increase the transmission torque to achieve high torque transmission at ultra-low speed. The control assembly can change the speed and torque of the torque converter assembly to the second helical gear 10 by different connection positions with the torque converter assembly, thereby realizing the control of the output torque.

[0030] like Figures 4-7As shown, the torque converter assembly includes a torque converter internal gear disk 14. Two torque converter internal gear disks 14, coaxial with the output shaft of the output motor 13, are symmetrically arranged inside the torque converter frame 11. A deceleration shaft 15, passing through the interior of the other torque converter internal gear disk 14, is connected at the center of the end of the torque converter internal gear disk 14 closest to the output motor 13. A limiting bracket 16, sleeved on the outside of the deceleration shaft 15, is connected inside the torque converter frame 11 and rotatably connected to the deceleration shaft 15. Output gears 17 are connected to the axial ends of both the output shaft of the output motor 13 and the deceleration shaft 15 inside the torque converter internal gear disk 14. Multiple transmission gears 18 mesh with the inner wall of the torque converter internal gear disk 14 on the outside of both output gears 17. Multiple transmission gears 18 are rotatably connected to the inner wall of the torque converter frame 11 via a limiting shaft. Each of the two torque converter internal gear disks 14 has a first clutch helical gear 19 at one end. During the conversion of the speed and torque output by the output motor 13, the output shaft of the output motor 13 drives a set of external transmission gears 18 to rotate through the output gear 17, and drives the torque converter internal gear disk 14 near the output motor 13 to rotate through the transmission gear 18. Since the outer diameter of the output gear 17 is much smaller than the inner diameter of the torque converter internal gear disk 14, the output motor 13 can convert high speed and low torque into low speed and high torque through the output gear 17 and the transmission gear 18, thus realizing the first conversion of speed and torque.

[0031] Furthermore, the torque-changing internal gear disk 14 on the side closer to the output motor 13 can drive two sets of smaller transmission gears 18 to rotate through the speed-reducing shaft 15 and the output gear 17 connected to the speed-reducing shaft 15. The output gear 17 meshes with the two sets of transmission gears 18 from the inside to the outside in sequence, and meshes with the torque-changing internal gear disk 14 on the side farther from the output motor 13, causing the torque-changing internal gear disk 14 on the side farther from the output motor 13 to rotate in the same direction as another torque-changing internal gear disk 14. This further reduces the speed and increases the torque of the torque-changing internal gear disk 14 on the side closer to the output motor 13, realizing a second conversion of speed and torque.

[0032] At this time, the two variable torque internal gear disks 14 can be connected to the control component through the externally set first clutch helical gear 19, and transmit power to the second helical gear 10 through the control component, so that the two variable torque internal gear disks 14 can achieve transmission at different speeds and torques. The variable torque internal gear disk 14 closer to the output motor 13 transmits a higher speed than the variable torque internal gear disk 14 farther from the output motor 13, and the variable torque internal gear disk 14 farther from the output motor 13 transmits a higher torque than the variable torque internal gear disk 14 closer to the output motor 13. This allows the lifting seat 3 and the lifting plate 4 to select appropriate transmission speed and transmission torque according to the load weight and carrying efficiency. The torque-changing internal gear disk 14 closer to the output motor 13 is driven by the output gear 17 and a set of transmission gears 18, while the torque-changing internal gear disk 14 farther from the output motor 13 is driven by the speed-reducing shaft 15, the output gear 17 and two sets of smaller transmission gears 18. The two sets of smaller transmission gears 18 mesh sequentially from the inside to the outside to change the direction, so that the two torque-changing internal gear disks 14 rotate in the same direction, ensuring that the control component does not change the transmission direction during the process of controlling the transmission speed and transmission torque.

[0033] like Figure 5 , Figure 8 and Figure 9 As shown, the control assembly includes a second drive shaft 20. The second helical gear 10 is externally connected to the second drive shaft 20, which passes through the interior of the two clutch frames 12. The second drive shaft 20 consists of a cylindrical shaft, a square shaft, and a limiting sleeve. A second clutch helical gear 21, meshing with the torque converter assembly, is sleeved on the outside of the square shaft of the second drive shaft 20. An adjusting frame 22, slidably connected to the lower end of the second clutch helical gear 21 and rotatably connected to it on the inner wall of the transmission housing 7, is sleeved on the outside of the adjusting frame 22. An adjusting inner threaded tube is externally connected to the adjusting frame 22. 23. An adjustment motor 24 is located on the outside of the transmission box 7, below the output motor 13. The output shaft of the adjustment motor 24 passes through the inside of the transmission box 7 and is threadedly connected to the adjustment inner screw tube 23. During the control of transmission speed and transmission torque, the adjustment motor 24 is electrically connected to the controller through the wiring harness. When the adjustment motor 24 is started, the output shaft of the adjustment motor 24 drives the adjustment inner screw tube 23 to move axially through the threaded connection, and drives the second clutch helical gear 21 to slide outside the second transmission shaft 20 through the adjustment frame 22.

[0034] At this time, since the second clutch helical gear 21 is located between the two torque-changing internal gear disks 14 and between the two first clutch helical gears 19 outside the two torque-changing internal gear disks 14, and both first clutch helical gears 19 can mesh with the second clutch helical gear 21 with the same outer diameter, when the second clutch helical gear 21 moves towards the side closer to the adjusting motor 24, the second clutch helical gear 21 will mesh with the first clutch helical gear 19 closer to the output motor 13, allowing the output motor 13 to move towards the second clutch helical gear 24 through the meshing of the torque-changing internal gear disk 14 closer to the first clutch helical gear 19. Gear 10 outputs power with relatively high speed and low torque. When the second clutch helical gear 21 moves away from the adjustment motor 24, the second clutch helical gear 21 will mesh with the first clutch helical gear 19 away from the output motor 13. This allows the output motor 13 to output power with relatively low speed and high torque to the second helical gear 10 through the meshing of the torque-changing internal gear disk 14 away from the first clutch helical gear 19. This achieves different speed and torque outputs, allowing the lifting seat 3 and the lifting plate 4 to select appropriate transmission speed and transmission torque according to the load weight and load efficiency.

[0035] The second clutch helical gear 21 can drive the entire second transmission shaft 20 to rotate through the square shaft, and drive the second helical gear 10 to rotate. The second helical gear 10 can drive the first helical gear 9 of the same size to rotate through meshing, thereby transmitting power outward. The adjusting frame 22 can rotate outside the second clutch helical gear 21, and is restricted from rotating by the inner wall of the lower end of the transmission box 7, thereby restricting the adjusting inner screw tube 23 from rotating, ensuring that the output shaft of the adjusting motor 24 can drive the adjusting inner screw tube 23 to move axially through the threaded connection.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-speed, high-torque lifting transmission device, comprising a movable base (1), a lifting frame (2) provided on the upper end of the movable base (1), and a lifting seat (3) protruding to the outside being slidably connected inside the lifting frame (2), a lifting insert plate (4) being connected to one end of the lifting seat (3) protruding outside the lifting frame (2), a transmission screw (5) threadedly connected to the lifting seat (3) being rotatably connected inside the lifting frame (2), and an mounting plate (6) being connected to the top end of the lifting frame (2) and the transmission screw (5), characterized in that: The mounting plate (6) is provided with a power assembly at its upper end, which provides rotational power to the transmission screw (5) and can provide power of different torques to the transmission screw (5).

2. The ultra-low speed, high torque lifting transmission device as described in claim 1, characterized in that, The power assembly includes a transmission box (7), the upper end of the mounting plate (6) is fixed with the transmission box (7), and the lower end of the transmission box (7) has a first transmission shaft (8) inserted into the upper end of the transmission screw (5). The upper end of the first transmission shaft (8) is connected to a first helical gear (9) located inside the transmission box (7), and the external part of the first helical gear (9) is meshed with a second helical gear (10).

3. The ultra-low speed, high torque lifting transmission device as described in claim 2, characterized in that, The transmission box (7) is provided with a torque converter frame (11) on the upper side inside, and two clutch frames (12) are provided on the lower side inside the transmission box (7). The transmission box (7) is provided with an output motor (13) on the outside, and the output shaft of the output motor (13) passes through the inside of the transmission box (7).

4. The ultra-low speed, high torque lifting transmission device as described in claim 3, characterized in that, The torque converter frame (11) is provided with a torque converter assembly that is connected to the output shaft of the output motor (13) and is used to reduce speed and increase torque. A control assembly is provided between the two clutch frames (12) and connected between the torque converter assembly and the second helical gear (10) to control the magnitude of the output torque.

5. The ultra-low speed, high torque lifting transmission device as described in claim 4, characterized in that, The torque converter assembly includes a torque converter internal gear disk (14). Two torque converter internal gear disks (14) are symmetrically arranged inside the torque converter frame (11) and are coaxial with the output shaft of the output motor (13). A speed reduction shaft (15) that passes through the interior of the other torque converter internal gear disk (14) is connected at the center of the end of the torque converter internal gear disk (14) that is away from the output motor (13).

6. The ultra-low speed, high torque lifting transmission device as described in claim 5, characterized in that, The torque converter frame (11) is internally connected to a limiting frame (16) sleeved on the outside of the deceleration shaft (15) and rotatably connected to the deceleration shaft (15). The output shaft of the output motor (13) and the axial ends of the deceleration shaft (15) located inside the torque converter internal gear disk (14) are both connected to output gears (17).

7. The ultra-low speed, high torque lifting transmission device as described in claim 6, characterized in that, Both output gears (17) are externally meshed with multiple transmission gears (18) that mesh with the inner wall of the torque converter internal gear disk (14), and the multiple transmission gears (18) are rotatably connected to the inner wall of the torque converter frame (11) through a limiting shaft. Both of the two torque converter internal gear disks (14) are provided with a first clutch helical gear (19) at opposite ends.

8. The ultra-low speed, high torque lifting transmission device as described in claim 4, characterized in that, The control component includes a second drive shaft (20), and the second helical gear (10) is externally connected to the second drive shaft (20) which passes through the interior of the two clutch frames (12). The second drive shaft (20) is composed of a cylindrical shaft, a square shaft and a limiting sleeve. The square shaft of the second drive shaft (20) is externally sleeved with a second clutch helical gear (21) that meshes with the torque converter component.

9. The ultra-low speed, high torque lifting transmission device as described in claim 8, characterized in that, The lower end of the second clutch helical gear (21) is sleeved with an adjustment frame (22) that is slidably connected to the inner wall of the transmission box (7) and rotatedly connected to the adjustment frame (22). The adjustment frame (22) is externally connected to an adjustment inner screw tube (23). The transmission box (7) is externally provided with an adjustment motor (24) located below the output motor (13), and the output shaft of the adjustment motor (24) passes through the inside of the transmission box (7) and is threadedly connected to the adjustment inner screw tube (23).

10. The transmission method of the ultra-low speed high torque lifting transmission device according to any one of claims 1-9, comprising the following steps: Step 1: Determine the output torque and select a large or small torque based on the weight of the goods being transported; Step 2: Control the output torque. By controlling the different engagement positions of the control component and the torque converter, control the magnitude of the torque output by the power component to the transmission screw (5), and drive the lifting seat (3) and the lifting plate (4) through the transmission screw (5) to lift and transport the items. Step 3: Power output. The power component drives the transmission screw (5) to rotate, and through the threaded connection between the lifting seat (3) and the transmission screw (5), the lifting seat (3) is driven to slide up and down inside the lifting frame (2). At the same time, the lifting seat (3) drives the lifting plate (4) to move up and down, so as to realize the lifting and transportation of items.

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