A drive mechanism for a lifting platform

Abstract

The utility model discloses a drive mechanism for lifting platform belongs to lifting machinery technical field, it includes motor, speed reducer, first worm wheel box, second worm wheel box, third worm wheel box, fourth worm wheel box, the worm right end of first worm wheel box, the worm left end of second worm wheel box, the worm left end of third worm wheel box the worm right end of third worm wheel box all are equipped with synchronous pulley, and the synchronous pulley on first worm wheel box is connected with the synchronous pulley on fourth worm wheel box through synchronous belt, and the synchronous pulley on second worm wheel box is connected with the synchronous pulley on third worm wheel box through synchronous belt. The utility model provides drive mechanism, through the mutual combination mode of worm wheel box and synchronous belt transmission mode drives four ball screws synchronous lifting, has reduced the noise of lifting platform work. Moreover, the transmission precision of synchronous belt is high, has guaranteed the synchronous lifting of last two ball screws, has reduced the power loss, has improved the lifting stability of lifting platform.

Description

Technical Field

[0001] This utility model relates to a drive mechanism for a lifting platform, belonging to the field of lifting machinery technology. Background Technology

[0002] A lifting platform is a device used to lift goods to a certain height, and it is widely used in logistics systems such as factories and automated warehouses. For example, AGVs (Automated Guided Vehicles) are usually equipped with lifting platforms. During operation, the AGV first moves to the pickup location to receive goods, and then transports the goods to the receiving point. The pickup and receiving points are usually conveyor lines, and the lifting platform on the AGV needs to lift the goods to the required height to match the height of the conveyor line, thus facilitating the pushing of goods from the AGV onto the conveyor line. Traditional lifting platforms generally use one motor and four lead screw lifting mechanisms to achieve platform lifting. The output shaft of the motor is connected to the first two reversing gearboxes through a drive shaft at each end, and the first two gearboxes are then connected to the last two reversing gearboxes through two drive shafts. This results in high operating noise during platform lifting. Moreover, power loss and structural deformation can easily occur at the connection points between the last two drive shafts and the last two gearboxes, leading to reduced power transmission efficiency and synchronization. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this utility model provides a drive mechanism for a lifting platform, which reduces the noise and power loss of the lifting platform during operation and improves the lifting stability of the lifting platform.

[0004] This utility model achieves the above objectives by adopting the following technical solutions: A drive mechanism for a lifting platform includes a motor, a reducer, a first worm gear box, a second worm gear box, a third worm gear box, and a fourth worm gear box, with the four worm gear boxes respectively located at the four corners of a rectangle; Each worm gear box includes a worm and a worm wheel that mesh with each other. The worms of the four worm gear boxes are all horizontally arranged in the left-right direction, and the axes of the worm wheels of the four worm gear boxes are all arranged in the vertical direction. The output shaft of the motor is connected to the input shaft of the reducer. The right end of the output shaft of the reducer is connected to the left end of the worm of the first worm gear box. The left end of the output shaft of the reducer is coaxially connected to the right end of the worm of the second worm gear box through a transmission shaft. Synchronous pulleys are installed on the right end of the worm in the first worm gear box, the left end of the worm in the second worm gear box, the left end of the worm in the third worm gear box, and the right end of the worm in the fourth worm gear box. The synchronous pulleys on the first worm gear box and the fourth worm gear box are connected by a synchronous belt, and the synchronous pulleys on the second worm gear box and the third worm gear box are connected by a synchronous belt.

[0005] Furthermore, ball screws are installed in the worm gear core holes of the four worm gear boxes, and a flange is fixed to the top of each ball screw.

[0006] Specifically, the two ends of the drive shaft are connected to the left end of the worm in the first worm gear box and the right end of the worm in the second worm gear box via couplings, respectively.

[0007] The beneficial effects of this utility model include, but are not limited to: The drive mechanism provided by this utility model drives four ball screws to lift synchronously through a combination of a worm gear box and a synchronous belt drive, reducing the noise of the lifting platform during operation. Furthermore, the high transmission precision of the synchronous belt ensures the synchronous lifting of the latter two ball screws, reducing power loss and improving the lifting stability of the platform. Attached Figure Description

[0008] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 A three-dimensional structural schematic diagram of the drive mechanism for a lifting platform provided by this utility model; Figure 2 A top view of the drive mechanism for a lifting platform provided by this utility model; Figure 3 A partial sectional view of the drive mechanism for a lifting platform provided by this utility model; In the diagram, 100 is the motor; 200 is the reducer; 301 is the worm; 302 is the worm wheel; 310 is the first worm wheel box; 320 is the second worm wheel box; 330 is the third worm wheel box; 340 is the fourth worm wheel box; 400 is the drive shaft; 510 is the synchronous pulley; 520 is the synchronous belt; 610 is the ball screw; 620 is the flange; and 700 is the coupling. Detailed Implementation

[0009] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0010] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0011] like Figures 1-3As shown, the drive mechanism for the lifting platform provided by this utility model includes a motor 100, a reducer 200, a first worm gear box 310, a second worm gear box 320, a third worm gear box 330, and a fourth worm gear box 340, with the four worm gear boxes respectively located at the four corners of the rectangle.

[0012] Each worm gear box includes a worm 301 and a worm wheel 302 that mesh with each other. The worms 301 of the four worm gear boxes are all horizontally arranged in the left-right direction, and the axes of the worm wheels 302 of the four worm gear boxes are all arranged in the vertical direction.

[0013] The output shaft of motor 100 is coaxially connected to the input shaft of reducer 200. The right end of the output shaft of reducer 200 is coaxially connected to the left end of the worm in first worm gear box 310. The left end of the output shaft of reducer 200 is coaxially connected to the right end of the worm in second worm gear box 320 via transmission shaft 400. In this invention, the reducer can be a gear reducer, which contains a first gear and a second gear. The output shaft of the motor is connected to the core hole of the first gear, and the worm in the first worm gear box is connected to the core hole of the second gear.

[0014] Synchronous pulleys 510 are installed on the right end of the worm in the first worm gear box 310, the left end of the worm in the second worm gear box 320, the left end of the worm in the third worm gear box 330, and the right end of the worm in the fourth worm gear box 340. The synchronous pulleys on the first worm gear box 310 and the fourth worm gear box are connected by a synchronous belt 520, and the synchronous pulleys on the second worm gear box 320 and the third worm gear box 330 are connected by a synchronous belt.

[0015] Furthermore, each of the four worm gear boxes has a ball screw 610 installed in its worm gear core hole, and a flange 620 is fixed to the top of each ball screw for connection to the lifting platform. In one specific embodiment, the travel stroke of the ball screw is 75 mm.

[0016] Specifically, the two ends of the drive shaft 400 are connected to the left end of the worm in the first worm gear box 310 and the right end of the worm in the second worm gear box 320 via couplings 700, respectively.

[0017] In this invention, the connection between the ball screw and the worm gear core hole can be achieved using the conventional structure in the prior art. The innovation of this invention does not lie in this, so it will not be elaborated upon. Figure 3 The tooth structure of the worm gear is not shown in detail, but the current illustration is the conventional drawing method for those skilled in the art and does not affect their correct understanding of the technical means of this utility model.

[0018] During operation, the output speed of motor 100, after being adjusted by the reducer, drives the worms of the first worm gear box 310 and the second worm gear box 320 to rotate. The worms of the first worm gear box 310 and the second worm gear box 320, respectively, drive the worms of the fourth worm gear box 340 and the third worm gear box 330 to rotate via the synchronous belt 520. The rotation of the four worms drives the four worm wheels to rotate, thereby driving the four ball screws to move up and down relative to the worm gear boxes. The third worm gear box 330 and the fourth worm gear box 340 are driven by the synchronous belt 520, reducing the noise of the lifting platform. Moreover, the high transmission precision of the synchronous belt reduces power loss and ensures the synchronous lifting of the latter two ball screws with the former two ball screws, improving the lifting stability of the lifting platform.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A drive mechanism for a lifting platform, characterized in that, It includes a motor, a reducer, a first worm gear box, a second worm gear box, a third worm gear box, and a fourth worm gear box, with the four worm gear boxes respectively located at the four corners of the rectangle; Each worm gear box includes a worm and a worm wheel that mesh with each other. The worms of the four worm gear boxes are all horizontally arranged in the left-right direction, and the axes of the worm wheels of the four worm gear boxes are all arranged in the vertical direction. The output shaft of the motor is connected to the input shaft of the reducer. The right end of the output shaft of the reducer is connected to the left end of the worm of the first worm gear box. The left end of the output shaft of the reducer is coaxially connected to the right end of the worm of the second worm gear box through a transmission shaft. Synchronous pulleys are installed on the right end of the worm in the first worm gear box, the left end of the worm in the second worm gear box, the left end of the worm in the third worm gear box, and the right end of the worm in the fourth worm gear box. The synchronous pulleys on the first worm gear box and the fourth worm gear box are connected by a synchronous belt, and the synchronous pulleys on the second worm gear box and the third worm gear box are connected by a synchronous belt.

2. The drive mechanism for a lifting platform according to claim 1, characterized in that, Each of the four worm gear boxes has a ball screw installed in the worm gear core hole, and a flange is fixed to the top of each ball screw.

3. The drive mechanism for a lifting platform according to claim 1, characterized in that, The two ends of the drive shaft are respectively connected to the left end of the worm in the first worm gear box and the right end of the worm in the second worm gear box via couplings.

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