A lifting and reversing mechanism for a four-way shuttle

Abstract

This utility model discloses a lifting and reversing mechanism for a four-way shuttle, belonging to the field of logistics equipment technology. The four-way shuttle has floating side plates mounted on its body that move up and down along the height of the vehicle body. A motor and a coaxial sprocket are installed inside the vehicle body. The coaxial sprocket is connected to a driven sprocket on an output shaft via a chain. A swing arm is mounted on the output shaft, and a cam follower is mounted on the swing arm. The floating side plates have grooves, and the cam follower moves within these grooves, thereby driving the floating side plates to move up and down. This utility model's lifting and reversing mechanism has a single-frame structure, achieving lifting and reversing actions through a single power source. The structure is simple and reliable; it does not require complex gear transmissions or high-precision cam structures, thus strictly controlling costs while facilitating installation and debugging.

Description

Technical Field

[0001] This utility model relates to the field of logistics equipment technology, specifically a lifting and reversing mechanism for a four-way shuttle. Background Technology

[0002] The four-way shuttle is a high-tech warehousing and logistics equipment that integrates automated handling, unmanned guidance, and intelligent control, providing intelligent and efficient cargo transportation for Industry 4.0. The four-way shuttle can be programmed to perform operations such as picking up, transporting, and placing goods in an automated warehouse. It can also communicate with a host computer or WMS system, and combined with logistics information technologies such as barcode recognition, it can achieve functions such as automated product identification, single-time storage and retrieval, continuous storage and retrieval, and automated sorting.

[0003] The lifting and reversing mechanism is the core of a four-way shuttle, and common structures include hydraulic, rack and pinion, gear module, and cam mechanisms. Hydraulic systems have numerous pipelines and joints, making them prone to oil leaks and cargo contamination, and are therefore less commonly used. Rack and pinion mechanisms are relatively stable, but require high rigidity and precision from the vehicle body. Gear module mechanisms are maintenance-free and easy to install, but are more expensive. Cam structures are limited by the vehicle body height, and their internal bearings or actuators have a shorter lifespan under harsh operating conditions.

[0004] Developing a simple and reliable lifting and reversing mechanism for a four-way shuttle is a technical issue that needs to be considered. Utility Model Content

[0005] This utility model provides a four-way shuttle lifting and reversing structure to solve the problems of oil leakage, excessively high requirements for vehicle body machining precision, or difficulty in controlling costs in the existing technology of realizing four-way shuttles during the lifting and reversing process.

[0006] The technical solution of this utility model is: a lifting and reversing mechanism for a four-way shuttle car. A floating side plate that moves up and down along the height direction of the car body is installed on the car body of the four-way shuttle car. A motor and a coaxial sprocket are installed inside the car body. The coaxial sprocket is connected to a passive sprocket on the output shaft through a chain. A swing arm is installed on the output shaft. A cam follower is installed on the swing arm. The floating side plate has a groove. The cam follower moves in the groove, thereby driving the floating side plate to move up and down.

[0007] Furthermore, there are two sets of floating side panels, symmetrically arranged on both sides of the vehicle body.

[0008] Furthermore, the chain has two sets, which are respectively connected to two sets of output shaft assemblies, and the two sets of swing arms are located at the same angle.

[0009] Furthermore, the groove is rectangular and has a uniform horizontal height.

[0010] Furthermore, the vehicle body is equipped with wheel set A, and wheel set B is installed on the floating side plate, with the axes of wheel set A and wheel set B being perpendicular to each other.

[0011] Furthermore, the height of the rectangular groove is greater than or equal to the outer diameter of the cam follower.

[0012] Compared with the prior art, the lifting and reversing mechanism of this utility model has the following advantages: (1) Single frame structure, lifting and reversing actions are realized through one power source, and the structure is simple and reliable; (2) No complex gear transmission or high-precision cam structure is required, and the cost is strictly controlled while it is easy to install and debug. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the output shaft; Figure 2 This is a schematic diagram of the floating side plate; Figure 3 This is a top view of the lifting and reversing mechanism of the four-way shuttle of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will be further explained below with reference to the accompanying drawings.

[0015] like Figure 3 As shown, this utility model provides a four-way shuttle car top lifting and reversing structure, mainly comprising a car body 1, floating side plates 2 symmetrically arranged on both sides, double top lifting plates 3, drive motor 4, coaxial sprocket 5, chains 6 and 7 on both sides of the coaxial sprocket, and two output shafts 8 and 9 asymmetrically arranged with front and rear double swing arms. The floating plate is equipped with wheel set B, which, under the action of the swing arms at the end of the double output shafts, realizes the position switching between wheel sets and the raising and lowering of the top lifting plate.

[0016] Floating side plate 2 Figure 2 As shown. The floating side plate 2 is symmetrically arranged on both sides of the vehicle body 1. The driving wheel set B is installed on it and two openings 2-3 are provided. The opening 2-3 can be a groove or a hole. The upper and lower planes 2-1 and 2-2 on the opening are the contact surfaces of the cam follower 9-4 on the swing arm 9-3.

[0017] like Figure 1 As shown, the output shaft assembly is as follows: the whole shaft 9-1 connects the left and right swing arms 9-3. The swing arms 9-3 are in the same position and at the same angle. Cam followers 9-4 are installed on them to drive the grooves 2-3 inside the floating side plate 2 to achieve its lifting and lowering action. A passive sprocket 9-2 is set in the middle to transmit the output torque of the motor to achieve the rotation of the swing arm.

[0018] A four-way shuttle vehicle with a top-lift reversing structure, wherein the vehicle body 1 is equipped with driving wheel sets A on the left and right sides, and floating side plates 2 symmetrically arranged on the front and rear sides that can move up and down along the height direction of the vehicle body. Wheel sets B are installed on the floating side plates 2, and the axes of wheel sets A and wheel sets B are perpendicular to each other. A coaxial sprocket 5 is provided inside the vehicle body 1, and two chains 6 and 7 are arranged on both sides of it. The output shaft assemblies 8 and 9 arranged on both sides are provided with swing arms 9-3 and cam followers 9-4 installed on them.

[0019] When wheel set A on vehicle body 1 contacts the running track, coaxial sprocket 5 drives output shafts 8 and 9 on both sides to rotate via chains 6 and 7. Cam follower 9-4 installed on the swing arm 9-3 at the end of output shaft assembly 8 and 9 drives the upper plane 2-2 or lower plane 2-3 of groove 2-3 on floating side plate 2 to rise or fall. When it rises, it drives the lifting plate 3 to rise synchronously. When it falls, the lifting plate 3 falls onto vehicle body 1.

[0020] The four-way shuttle has three types of movement.

[0021] When traveling on track A: The traveling wheel set A on the car body 1 contacts the track, the end swing arm 9-3 installed on the output shaft assembly 8 and 9 is in a horizontal position, the cam follower 9-4 contacts the upper plane 2-2 of the groove 2-3 on the floating side plate 2, the floating side plate 2 is restricted to this height and cannot fall, at this time the wheel set B is suspended, the lifting plate 3 falls on the car body 1, and the vehicle can travel normally on track A.

[0022] Track A Lifting: When the vehicle is on track A, wheel set A on the vehicle body 1 contacts the track. When the lifting plate 3 needs to be lifted, the coaxial sprocket 5 drives the output shafts 8 and 9 on both sides to rotate through chains 6 and 7. During the upward rotation of the output shaft assemblies 8 and 9 by 90 degrees, the cam follower 9-4 installed on the end swing arm 9-3 always contacts the upper plane 2-2 of the groove 2-3 on the driving floating side plate 2. As the rotation continues, the side plate 2 assembly is subjected to force and continuously drives the traveling wheel B to move upward. After contacting the lifting plate 3, it pushes the wheel B to move upward together, realizing the lifting action of the lifting plate 3. Conversely, during the downward movement, as the output shaft assemblies 8 and 9 change from an upward posture to a horizontal posture, the cam follower 9-4 mounted on the end swing arm 9-3 always contacts the upper plane 2-2 of the groove 2-3 on the floating side plate 2. As the downward rotation continues, the side plate 2 assembly descends with the follower 9-4 under gravity. After the lifting plate 3 contacts the vehicle body 1, it falls onto the vehicle body 1, and the floating side plate 2 disengages from the lifting plate 3. The limit of the floating side plate 2 is completed according to the final position of the follower 9-4 when the swing arm 9-3 is in a horizontal posture.

[0023] Track B travel: When the vehicle travels on track A, wheel set A on the vehicle body 1 contacts the track. When a change of direction is required, i.e., when the driving wheels are switched, the coaxial sprocket 5 drives the output shafts 8 and 9 on both sides to rotate through chains 6 and 7. During the downward rotation of the output shaft assemblies 8 and 9 by 90 degrees, the cam follower 9-4 installed on the end swing arm 9-3 drives the lower plane 2-1 of the groove 2-3 on the floating side plate 2, and wheel set B contacts the track. At this time, both wheel sets A and B are in contact with the track. As the rotation continues, the vehicle body 1, together with its driving wheel set A, is lifted by the reaction force of the swing arm 9-3. At this time, driving wheel set B contacts the track, and driving wheel set A is suspended in the air, thus completing the wheel set switching. The vehicle changes from traveling on track A to traveling on track B.

Claims

1. A jacking and reversing mechanism of a four-way shuttle vehicle, a floating side plate that moves up and down in the height direction of a vehicle body being installed on the vehicle body of the four-way shuttle vehicle, characterized by, Wheel set B is installed on the floating side plate. A motor and coaxial sprocket are installed inside the vehicle body. The coaxial sprocket is connected to the driven sprocket on the output shaft through a chain. A swing arm is installed on the output shaft. A cam follower is installed on the swing arm. There is a groove on the floating side plate. The cam follower moves in the groove, thereby driving the floating side plate to move up and down.

2. The jacking and reversing mechanism of the four-way shuttle vehicle according to claim 1, characterized in that, There are two sets of floating side panels, which are symmetrically arranged on both sides of the vehicle body.

3. The jacking and reversing mechanism of the four-way shuttle vehicle according to claim 2, characterized in that, The chain has two sets, which are respectively connected to two sets of output shaft assemblies, and the two sets of swing arms are located at the same angle.

4. The jacking and reversing mechanism of the four-way shuttle vehicle according to claim 3, characterized in that, The groove is a rectangular groove with a uniform horizontal height.

5. The jacking and reversing mechanism of the four-way shuttle vehicle according to claim 1, wherein, The vehicle body is equipped with wheel set A, and the axes of wheel set A and wheel set B are perpendicular to each other.

6. The jacking and reversing mechanism of the four-way shuttle vehicle according to claim 4, wherein, The height of the rectangular groove is greater than or equal to the outer diameter of the cam follower.

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