Electric control type electric retractable lifting device

Abstract

The utility model provides an electric control type electric retractable lifting device. The electric control type electric retractable lifting device comprises a supporting component, an intelligent driving assembly, a power transmission component and a retractable folding component. The intelligent driving assembly comprises a controller and a driving motor, an output shaft of the driving motor is connected to a multi-stage gear speed reducing mechanism through a coupler, the speed reducing mechanism comprises a two-stage cylindrical gear and one-stage planetary gear combined structure, the two ends of the output shaft are connected with a left swing rod and a right swing rod of the retracting and folding component, and retracting and lifting actions are achieved. The output shaft is connected with an angle position sensor through a gear pair, the sensor feeds angle signals back to a controller, and real-time closed-loop control is achieved. The device has the advantages of being large in torque, high in precision, compact in structure, easy to install and easy and convenient to maintain, and is suitable for various automobile and engineering machinery application scenes needing to be retracted or lifted.

Description

Technical Field

[0001] This utility model relates to the field of retractable and lifting mechanisms, and in particular to an electrically controlled electric retractable and lifting device. Background Technology

[0002] With the development of electric and intelligent vehicles, electromechanical transmission technology is increasingly widely used in automobiles and various types of construction machinery. In existing retraction and lifting devices, hydraulic transmission schemes are commonly used due to their large driving force. However, hydraulic systems have disadvantages such as complex structure, high maintenance costs, and efficiency that is greatly affected by temperature. At the same time, the hydraulic transmission process involves multiple energy conversions, resulting in pressure loss, volume loss, and mechanical friction loss. The overall efficiency is generally only 0.75 to 0.8, and precise control is difficult.

[0003] While some existing electric drive solutions have relatively simple structures, their insufficient deceleration and torque amplification capabilities make it difficult to achieve smooth and precise lifting and retraction movements under heavy loads. Furthermore, existing devices generally lack real-time position detection and closed-loop control functions, resulting in poor operational accuracy and failing to meet the requirements for high integration, compact size, and easy installation.

[0004] Therefore, there is an urgent need for an electrically controlled retractable lifting device that is compact in structure, has high torque output, and can provide real-time feedback on the position of the actuators and achieve precise control, in order to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide an electrically controlled electric retractable lifting device, which aims to achieve high torque and precise controllable power output through multi-stage gear combination reduction and planetary gear reduction mechanism, and to achieve real-time closed-loop control of the retractable folding component by combining angle position sensor and controller, thereby overcoming the problems of insufficient torque, low control accuracy, complex structure or high maintenance cost in the prior art.

[0006] This utility model is achieved using the following technical solution: an electrically controlled electric retractable lifting device, characterized in that it includes a support component, an intelligent drive assembly, a power transmission component, and a retractable folding component. The support component is used to fix the device to a vehicle frame. The intelligent drive assembly includes a controller and a drive motor. The controller is installed on the rear housing of the drive motor, and the output shaft of the drive motor is connected to a gear shaft 1 via a coupling. The power transmission component includes a cylindrical gear 1, a cylindrical gear 2, a sun gear, a planetary gear, and an internal gear ring that mesh sequentially. The cylindrical gear 1 is fixedly connected to the gear shaft 2, the cylindrical gear 2 is fixedly connected to the sun gear, the sun gear meshes with the planetary gear, the planetary gear meshes with the internal gear ring and is installed on a planetary gear spindle, the planetary gear spindle is fixed on a planetary carrier, and the planetary carrier is fixedly connected to the output shaft. The two ends of the output shaft are respectively tightly connected to the left and right swing arms of the retractable folding component via splines to realize the retractable lifting action.

[0007] Furthermore, a rubber buffer pad is provided between the two claws of the coupling. The outer side of the coupling is installed in the housing through bearing one, and gear shaft one is installed in the large end cover through bearing two. A tightening plug one is provided on the large end cover for adjusting the axial clearance of bearing two.

[0008] Furthermore, the gear shaft two is mounted in the housing and the large end cover via bearing three, and the large end cover is provided with a tightening plug two for adjusting the preload of bearing three.

[0009] Furthermore, the output shaft is mounted inside the housing and the large end cover via needle roller bearings and thrust needle roller bearings, and a skeleton oil seal is provided on its outer circumference to prevent lubricating oil leakage.

[0010] Furthermore, a cylindrical gear three is fixedly connected to the right end of the output shaft. The cylindrical gear three meshes with a cylindrical gear four mounted on the central shaft of the sensor. Both ends of the central shaft of the sensor are mounted in the housing and the small end cover through bearing four. An angle position sensor is mounted on the central shaft of the sensor for real-time detection of the rotation angle of the output shaft.

[0011] Furthermore, the small end cap is fixedly connected to the housing, and a dustproof ring is provided at the mating point between it and the output shaft to prevent dust and moisture from entering the mounting cavity of the angle position sensor.

[0012] Furthermore, the housing is an integrally enclosed structure used to support the aforementioned gear shafts, bearings, and transmission components, and is fixed to the vehicle frame by the supporting members.

[0013] The electrically controlled electric retraction and lifting device described in this utility model has the following advantages:

[0014] Employing a combination of two-stage cylindrical gear reduction and one-stage planetary gear reduction, this design effectively converts the high-speed, low-torque motor into low-speed, high-torque operation, adapting to heavy-load lifting and retraction conditions. An angle position sensor is installed at the output shaft end, enabling real-time position detection and closed-loop control via a controller, resulting in smooth operation and high precision. The drive motor, reduction transmission mechanism, and sensors are integrated into a single housing, making it compact, lightweight, and easy to install. Motor drive eliminates the risks of hydraulic system oil maintenance and leakage, reducing operating costs and aligning with energy-saving and environmental protection trends. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other adjustments and modifications can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a schematic diagram of the power transmission component of this utility model;

[0018] Figure 3 A schematic diagram of the planetary gear transmission mechanism inside the power transmission component;

[0019] Figure 4 This is a schematic diagram of a two-stage cylindrical gear transmission mechanism inside a power transmission component.

[0020] In the diagram, 1-Controller, 2-Drive motor, 3-Coupling, 4-Bearing 1, 5-Gear shaft 1, 6-Bearing 2, 7-Tightening plug 1, 8-Gear shaft 2, 9-Bearing 3, 10-Tightening plug 2, 11-Spiral gear 1, 12-Large end cover, 13-Sun gear, 14-Thrust needle roller bearing, 15-Needle roller bearing, 16-Output shaft, 17-Folding and unfolding component, 18-Skeleton oil seal, 19-Support component, 20-Car frame, 21-Spiral gear 2, 22-Internal gear ring, 23-Housing, 24-Planetary gear, 25-Planetary carrier, 26-Planetary gear spindle, 27-Spiral gear 3, 28-Dustproof ring, 29-Spiral gear 4, 30-Sensor central shaft, 31-Bearing 4, 32-Angle position sensor, 33-Small end cover. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Example

[0023] like Figure 1-3 As shown, this embodiment provides an electrically controlled electric retractable lifting device, including a support member 19, an intelligent drive component, a power transmission component, and a retractable folding component 17.

[0024] Support member 19 is bolted to the side of vehicle frame 20 to support and stabilize the entire device. The intelligent drive assembly includes controller 1 and drive motor 2. Controller 1 is mounted on the rear housing of drive motor 2 and is electrically connected to drive motor 2 via cable to receive signals and output control commands.

[0025] The front output shaft of the drive motor 2 is connected to the gear shaft 5 via a coupling 3. Rubber buffer pads are provided between the two claws of the coupling 3 for buffering and vibration absorption. The outer side of the coupling 3 is mounted in the front hole of the housing 23 via a bearing 4, providing rotational support. The other end of the gear shaft 5 is mounted in the inner hole of the large end cover 12 via a bearing 6. The large end cover 12 is fixed to the front face of the housing 23, and the axial clearance of the bearing 6 is adjusted by tightening the screw plug 7 to prevent the gear shaft 5 from moving.

[0026] A cylindrical gear 11 is fixedly mounted in the middle of gear shaft 28. Cylindrical gear 11 meshes with gear shaft 5 to form the first stage of reduction transmission. One end of gear shaft 28 is mounted inside housing 23 via bearing 39, and the other end is mounted inside large end cover 12 via bearing 39. Large end cover 12 is equipped with a tightening plug 20 for adjusting the preload of bearing 39. A cylindrical gear 21 is fixedly mounted in the middle of sun gear 13. Cylindrical gear 21 is integrally connected to sun gear 13, forming a synchronously rotating double-link structure. Cylindrical gear 21 meshes with gear shaft 28 to form the second stage of reduction transmission.

[0027] The sun gear 13 is fitted onto the outer circumference of the output shaft 16 with a small clearance, allowing it to rotate relative to the output shaft 16. The external teeth of the sun gear 13 mesh with the external teeth of the planetary gear 24. The planetary gear 24 is mounted on the planetary gear spindle 26 via needle roller bearings, and the planetary gear spindle 26 is tightly pressed into the support hole of the planet carrier 25. The outer side of the planetary gear 24 meshes with the internal gear ring 22 fixed to the inner wall of the housing 23, thus forming a third-stage reduction transmission structure. The central internal spline of the planet carrier 25 is tightly connected to the external spline of the output shaft 16, fixing the planet carrier 25 and the output shaft 16 together and allowing them to rotate synchronously.

[0028] Both ends of the output shaft 16 are tightly connected to the left and right swing arms of the retractable folding component 17 via splines, so that the rotation of the output shaft 16 drives the swing arms to swing up and down. The outer diameters of both ends of the output shaft 16 are supported in the housing 23 and the large end cover 12 by needle roller bearings 15, and are axially positioned by thrust needle roller bearings 14. The skeleton oil seals 18 are respectively installed in the oil seal grooves of the housing 23 and the large end cover 12 to seal the outer diameter of the output shaft 16 to prevent lubricating oil leakage.

[0029] At the left end of the output shaft 16, a cylindrical gear 27 is mounted and fixedly connected to it. The cylindrical gear 27 meshes with a cylindrical gear 29 mounted on the sensor central shaft 30. The two ends of the sensor central shaft 30 are respectively mounted in the support holes of the housing 23 and the small end cover 33 via bearings 31. The small end cover 33 is fixed to the left end face of the housing 23 with screws. The angle position sensor 32 is mounted on the sensor central shaft 30, and its internal moving element is fixedly connected to the sensor central shaft 30. The outer shell is fixed to the housing 23, so that when the sensor central shaft 30 rotates, it drives the moving element to rotate, thereby generating an angle signal that is fed back to the controller 1.

[0030] A dustproof ring 28 is installed at the mating point between the small end cap 33 and the output shaft 16 to prevent dust and moisture from entering the sensor cavity, ensuring a clean working environment for the angle position sensor 32. The housing 23 provides support and sealing for the entire power transmission component and is fixed to the vehicle frame 20 via the support member 19.

[0031] In this embodiment, the power transmission component adopts a combination structure of two-stage cylindrical gear reduction (cylindrical gear 11 and cylindrical gear 21) plus one-stage planetary gear reduction (sun gear 13, planetary gear 24, and internal gear ring 22), realizing the conversion of high-speed, low-torque power output from the drive motor 2 to low-speed, high-torque power. Real-time control is achieved through the angle position sensor 32 and the controller 1, ensuring precise and controllable movement of the folding component 17. This device has advantages such as high integration, compact structure, convenient installation, and high control precision.

[0032] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. An electrically controlled electric retraction and lifting device, characterized in that, The device includes a support member (19), an intelligent drive assembly, a power transmission component, and a folding / retracting component (17). The support member (19) is used to fix the device to the vehicle frame (20). The intelligent drive assembly includes a controller (1) and a drive motor (2). The controller (1) is mounted on the rear housing of the drive motor (2). The output shaft of the drive motor (2) is connected to a gear shaft (5) via a coupling (3). The power transmission component includes a cylindrical gear (11), a cylindrical gear (21), a sun gear (13), and a planetary gear (24) meshing sequentially. 4) and internal gear ring (22), wherein cylindrical gear one (11) is fixedly connected to gear shaft two (8), cylindrical gear two (21) is fixedly connected to sun gear (13), sun gear (13) meshes with planet gear (24), planet gear (24) meshes with internal gear ring (22) and is installed on planet gear spindle (26), planet gear spindle (26) is fixed on planet carrier (25), planet carrier (25) is fixedly connected to output shaft (16); the two ends of the output shaft (16) are respectively tightly connected to the left and right swing arms of the folding component (17) through splines to realize the folding and lifting action.

2. The electrically controlled electric retraction and lifting device according to claim 1, characterized in that, A rubber buffer pad is provided between the claws on both sides of the coupling (3). The outer side of the coupling (3) is installed in the housing (23) through bearing one (4). Gear shaft one (5) is installed in the large end cover (12) through bearing two (6). A tightening screw plug one (7) is provided on the large end cover (12) to adjust the axial clearance of bearing two (6).

3. The electrically controlled electric retraction and lifting device according to claim 1, characterized in that, The gear shaft 2 (8) is installed in the housing (23) and the large end cover (12) via the bearing 3 (9). The large end cover (12) is provided with a tightening plug 2 (10) for adjusting the preload of the bearing 3 (9).

4. The electrically controlled electric retraction and lifting device according to claim 1, characterized in that, The output shaft (16) is mounted in the housing (23) and the large end cover (12) by means of needle roller bearings (15) and thrust needle roller bearings (14), and a skeleton oil seal (18) is provided on its outer circle to prevent lubricating oil leakage.

5. The electrically controlled electric retraction and lifting device according to claim 1, characterized in that, The right end of the output shaft (16) is fixedly connected to a cylindrical gear three (27), which meshes with a cylindrical gear four (29) mounted on the sensor central shaft (30). The two ends of the sensor central shaft (30) are mounted in the housing (23) and the small end cover (33) through bearing four (31). An angle position sensor (32) is mounted on the sensor central shaft (30) for real-time detection of the rotation angle of the output shaft (16).

6. The electrically controlled electric retraction and lifting device according to claim 5, characterized in that, The small end cap (33) is fixedly connected to the housing (23), and a dustproof ring (28) is provided at the mating point between it and the output shaft (16) to prevent dust and moisture from entering the mounting cavity of the angle position sensor (32).

7. The electrically controlled electric retraction and lifting device according to claim 6, characterized in that, The housing (23) is an integrally enclosed structure used to support the aforementioned gear shafts, bearings and transmission components, and is fixed to the vehicle frame (20) by the support member (19).

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