Elevator for layer changing of four-way shuttle vehicle

Abstract

The elevator comprises a machine frame, an objective table and a driving mechanism, and the machine frame comprises a base and a plurality of stand columns perpendicularly fixed to the top face of the base. The objective table is arranged in parallel, and the peripheral side is slidably connected with the columns; the driving mechanism comprises a servo motor, a transmission shaft and a transmission chain; the top end and the bottom end of the stand column are rotationally connected with driving chain wheels. The servo motor is fixed to the bottom end of the stand column. The transmission shaft penetrates through the driving chain wheels at the bottom ends of the two adjacent stand columns to simultaneously drive the driving chain wheels at the bottom ends of the two stand columns to rotate; the transmission chain bypasses the driving chain wheels at the top end and the bottom end of the stand column, and two ends of the transmission chain are fixed with the side wall of the objective table to drive the objective table to lift. The elevator provided by the utility model is simple to control, small in load and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent warehousing and logistics equipment, and more specifically, to a hoist for a four-way shuttle vehicle to change floors. Background Art

[0002] In order to achieve the goal of reducing costs and increasing efficiency put forward by the state for the logistics industry, the warehousing and logistics industry is transforming from a labor-intensive industry to an automated, flexible and intelligent one. The four-way shuttle vehicle system has gradually come into the industry's view due to its high flexibility and good adaptability. The four-way shuttle vehicle system mainly consists of hardware devices such as shelves, four-way shuttle vehicles, hoists, etc. and software systems such as equipment scheduling systems. When performing inbound and outbound operations, the shuttle vehicle is responsible for the handling operation on the horizontal plane of the goods, and the hoist is responsible for the handling operation in the vertical direction of the goods. The shuttle vehicle changes floors by taking the hoist to perform operations on different floors. Because the four-way shuttle vehicle can move two-dimensionally on the horizontal plane, decoupling the shuttle vehicle from the roadway, the system has significant advantages such as high flexibility, high reliability and good adaptability, and can effectively meet the characteristics of high storage density requirements for related products and large fluctuations in inbound and outbound operations.

[0003] Similar to the shuttle vehicle system, the hoist is a bottleneck resource restricting the efficiency of the four-way shuttle vehicle system. During the peak period of inbound and outbound operations, the efficiency of the four-way shuttle vehicle system in inbound and outbound operations is closely related to the quality of the task scheduling plan of the bottleneck equipment resource. Subject to the actual layout conditions of the equipment, the number of hoists (outbound hoists or inbound hoists) can at most be the same as the number of roadways. Therefore, as a bottleneck equipment resource in the whole system, the task scheduling plan of the hoist is an important link affecting the inbound and outbound efficiency of the four-way shuttle vehicle system.

[0004] Currently, the hoist usually uses four servo motors to drive the lifting of the load platform of the hoist to meet the up and down transportation of the four-way shuttle vehicle. However, when lifted to a specified height, there is a certain gap between the hoist itself and the destination. Therefore, the shuttle vehicle in the hoist cannot directly transfer the materials in the vehicle to the destination, and manual operation is still required, which increases the control difficulty of the hoist, and the servo motors have large power and high energy consumption, and full-automatic floor-changing operations cannot be achieved.

[0005] Therefore, how to provide a hoist for a four-way shuttle vehicle to change floors with simple control, low energy consumption and low cost is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0006] In view of this, the utility model provides a hoist for a four-way shuttle vehicle to change floors, aiming to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A hoist for a four-way shuttle vehicle to change floors, comprising:

[0009] A frame, the frame includes a base and multiple vertical columns fixedly arranged on the top surface of the base;

[0010] A load platform, the load platform is arranged parallel to the upper side of the base, and its periphery is slidably connected to the side walls of multiple columns;

[0011] A driving mechanism, the driving mechanism includes a servo motor, a transmission shaft and a transmission chain; active sprockets are rotatably connected to the top and bottom ends of multiple columns, and the servo motor is fixed to the bottom end of the column; the transmission shaft penetrates through the active sprockets at the bottom ends of two adjacent columns and one end of it is fixedly connected to the output shaft of the servo motor to simultaneously drive the active sprockets at the bottom ends of the two columns to rotate; the transmission chain bypasses the active sprockets located at the top and bottom ends of the column and both ends of it are fixedly connected to the side wall of the load platform to drive the lifting of the load platform.

[0012] The beneficial effect of the above technical solution is that the four-way shuttle vehicle can walk onto the load platform, drive the rotation of the sprocket through the servo motor, and use the chain to pull the load platform to lift along the height direction of the column. When the lifting height of the load platform is docked with the warehousing conveyor line, the floor-changing operation of the four-way shuttle vehicle can be realized.

[0013] Preferably, there are four columns, which are respectively arranged at the four corners of the top surface of the base, and there are two sets of driving mechanisms, which are respectively fixed to the bottom ends of the two columns on the first side frame of the frame. The hoists in the prior art usually use four sets of motors for driving. This technical solution can realize the lifting operation of the hoist by setting two servo motors and two transmission shafts, reduce the manufacturing cost of the hoist, and reduce the difficulty of synchronous control of the motors.

[0014] Preferably, it further includes a counterweight mechanism, the counterweight mechanism includes a counterweight block, a first driven sprocket and a first driven chain; the counterweight block is slidably connected to the two columns on the second side frame of the frame opposite to the first side frame, there are four first driven sprockets, which are respectively rotatably connected to the top of the frame, and the four first driven sprockets are arranged in pairs symmetrically; the first driven chain sequentially bypasses the two first driven sprockets on the top surface of the frame opposite to the second side frame and the top surface of the frame opposite to the first side frame, and both ends of it are respectively fixedly connected to the top surface of the counterweight block and the top surface of the load platform close to the first side frame. Adding a counterweight mechanism can improve the safety factor during the lifting process. During the lifting process of the load platform, the first driven chain rotates along the first driven sprocket, and the counterweight block makes a driven lifting movement with the lifting of the load platform, which can offset part of the load of the load platform, reduce the output power of the motor, and reduce the use cost of the hoist.

[0015] Preferably, there are two first driven chains. Each first driven chain is connected to two first driven sprockets. The counterweight is pulled by the two first driven chains, and the counterweight moves down or up as the loading platform rises or falls, which can offset part of the load during the lifting and lowering of the loading platform and reduce the output power of the servo motor.

[0016] Preferably, it further includes a second driven sprocket and a second driven chain; multiple mounting plates are fixed at the top of the frame, and the first driven sprockets are rotatably connected to the mounting plates one by one; the second driven sprocket is rotatably connected to the mounting plate corresponding to the top surface of the second side frame of the frame, and two second driven sprockets are correspondingly arranged on each mounting plate; the second driven chain sequentially bypasses the two second driven sprockets and its two ends are respectively fixed to the top surface of the counterweight and the top surface of the loading platform. The second driven chain and the second driven sprocket are arranged on the same side of the counterweight, and the second driven chain rotates as a follower with the first driven chain, improving the stability during the lifting and lowering of the loading platform and ensuring the safety performance during the use of the elevator.

[0017] Preferably, sliding rails arranged along the height direction are fixed on the opposite side walls of the two columns corresponding to the second side frame of the frame, and sliders are fixed on the side walls of the counterweight corresponding to the sliding rails, and the sliders are slidably connected to the sliding rails. The lifting and lowering between the two sides of the counterweight and the columns is realized by means of the sliding rails and the sliders.

[0018] Preferably, a four-way vehicle track for docking with the track of the warehousing and logistics conveyor line is fixed on the top surface of the loading platform. When the four-way shuttle vehicle travels onto the four-way vehicle track on the loading platform and the loading platform rises and aligns with the track of the conveyor line, the four-way vehicle can realize layer-changing transportation.

[0019] Preferably, a chain conveyor corresponding to the connecting conveyor of the warehousing and logistics conveyor line is drivingly connected to the top surface of the loading platform. The loading platform can not only realize the layer-changing transportation of the four-way vehicle, but also realize the transportation of goods. The goods are placed on the chain conveyor, and when the lifting height of the loading platform makes the chain conveyor dock with the connecting conveyor, the layer-changing transportation of the goods can be realized.

[0020] Preferably, multiple cross beams are fixedly arranged at intervals along the height direction between two adjacent columns. The strength of the elevator is improved, and the overall stability of the elevator during use is ensured.

[0021] It can be seen from the above technical solutions that compared with the prior art, the present invention discloses a lift for four-way shuttle vehicle layer change, which adopts two sets of driving mechanisms, reduces the control difficulty of the motor, uses a counterweight mechanism to offset part of the load generated during the lifting and lowering of the loading platform, reduces the output power of the motor, and reduces the manufacturing and use costs of the elevator. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0023] Figure 1 Schematic diagram of the hoist structure provided by the present invention;

[0024] Figure 2 For Figure 1 Enlarged schematic diagram of part A in

[0025] Figure 3 For Figure 1 Enlarged schematic diagram of part B in

[0026] Figure 4 Front view of the hoist provided by the present invention;

[0027] Figure 5 Top view of the hoist provided by the present invention.

[0028] Among them,

[0029] 1 - Frame; 11 - Base; 12 - Column; 13 - Cross beam;

[0030] 2 - Loading platform; 21 - Four - way vehicle track; 22 - Chain conveyor;

[0031] 3 - Driving mechanism; 31 - Servo motor; 32 - Transmission shaft; 33 - Transmission chain;

[0032] 4 - Counterweight mechanism; 41 - Counterweight block; 42 - First driven sprocket; 43 - First driven chain; 44 - Second driven sprocket; 45 - Second driven chain. Specific embodiments

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0034] Refer to the attached Figures 1 to 5 , the embodiments of the present invention disclose a hoist for four - way shuttle car layer change, including:

[0035] The frame 1 includes a base 11 and a plurality of columns 12 vertically fixed to the top surface of the base 11;

[0036] The loading platform 2 is arranged parallel to the base 11, and its peripheral side is slidably connected to the side walls of the plurality of columns 12;

[0037] The driving mechanism 3 includes a servo motor 31, a transmission shaft 32 and a transmission chain 33; the top and bottom ends of the plurality of columns 12 are rotatably connected with driving sprockets, and the servo motor 31 is fixed to the bottom end of the column 12; the transmission shaft 32 passes through the driving sprockets at the bottom ends of two adjacent columns 12 and one end thereof is fixed to the output shaft of the servo motor 31 to simultaneously drive the driving sprockets at the bottom ends of the two columns 12 to rotate; the transmission chain 33 bypasses the driving sprockets at the top and bottom ends of the columns 12 and both ends thereof are fixed to the side walls of the loading platform 2 to drive the loading platform 2 to be lifted and lowered.

[0038] In order to further optimize the above technical solution, four columns 12 are provided and arranged at the four corners of the top surface of the base 11 respectively, and two sets of driving mechanisms 3 are provided and fixed respectively at the bottom ends of the two columns 12 located on the first side frame body of the frame 1.

[0039] Participate in the Figure 1 and 2 As shown, the installation direction is shown in the figure, and four columns are arranged around the top surface of the base, and the top surface of the column and the ground are rotatably connected with driving sprockets, and the driving sprockets at the top and bottom ends of each column are connected by a transmission chain; the driving mechanism is arranged at the lower end of the two columns on the left side of the frame, and the output shaft of the servo motor extends to the right with a transmission shaft, and the two transmission shafts in the two sets of driving mechanisms are respectively connected to the two driving sprockets at the lower ends of the two columns on the front and rear sides of the frame. When the servo motor is running, it can simultaneously drive the rotation of the two driving sprockets at the bottom end of the front or rear side of the frame, and the rotation of the driving sprocket can synchronously realize the rotation of the transmission chain. Since the two ends of the transmission chain are fixed to the loading platform, when the transmission chain rotates, it can pull the loading platform to slide along the columns, thereby realizing the lifting operation of the loading platform.

[0040] It should be noted that the two sets of driving mechanisms in this embodiment operate simultaneously and their control methods are synchronized.

[0041] In order to further optimize the above technical solution, a four-way car track 21 is fixed on the top surface of the loading platform 2, which is connected to the track of the storage logistics conveyor line. When the four-way shuttle car moves on the four-way car track, two sets of driving mechanisms drive the lifting and lowering of the loading platform at the same time. When the four-way car track is connected with the track on the storage logistics conveyor line, the four-way shuttle car drives out of the loading platform to complete the layer-changing and conveying operation.

[0042] To further optimize the above technical solution and better realize the lifting of the stage, guide wheels are rotatably connected to the outer peripheral ends of the stage. Opposite side walls of adjacent two columns are provided with guide grooves, and the guide wheels are slidably connected in the guide grooves. The stage slides up and down along the columns by the up and down rolling of the guide wheels along the guide grooves of the columns.

[0043] In this embodiment, a counterweight mechanism 4 is further included. The counterweight mechanism 4 includes a counterweight block 41, a first driven sprocket 42, and a first driven chain 43. The counterweight block 41 is slidably connected to two columns 12 on the second side frame of the frame 1 opposite to the first side frame. Four first driven sprockets 42 are provided and are respectively rotatably connected to the top of the frame 1. The four first driven sprockets 42 are arranged in pairs symmetrically. The first driven chain 43 sequentially bypasses the first driven sprockets 42 on the top surface of the frame 1 opposite to the second side frame and the top surface of the frame 1 opposite to the first side frame, and its two ends are respectively fixed to the top surface of the counterweight block 41 and the top surface of the stage 2 close to the first side frame. Two first driven chains 43 are provided.

[0044] During the lifting process of the stage, the counterweight block rises and falls with the lifting of the stage under the action of its own gravity. The stage is connected to the counterweight block through the first driven chain. When the stage rises, the counterweight block pulls the second driven chain to rotate along the first driven sprocket and descends under the action of its own gravity. When the stage descends, the stage pulls the first driven chain to rotate along the first driven sprocket, thereby pulling the counterweight block to rise. By using the counterweight block to offset part of the load during the transportation of the hoist, the output power of the driving mechanism is reduced, and the operating cost of the hoist is lowered.

[0045] To further optimize the above technical solution, improve the stability during the operation of the counterweight mechanism, and ensure the safe and effective stable operation of the hoist, a second driven sprocket 44 and a second driven chain 45 are further included. Multiple mounting plates are fixed to the top of the frame 1, and the first driven sprockets 42 are rotatably connected to the mounting plates one by one. The second driven sprocket 44 is rotatably connected to the mounting plate corresponding to the top surface of the second side frame of the frame 1, and two second driven sprockets 44 are provided corresponding to each mounting plate. The second driven chain 45 sequentially bypasses the two second driven sprockets 44, and its two ends are respectively fixed to the top surface of the counterweight block 41 and the top surface of the stage 2.

[0046] The second driven sprocket, the second driven chain, and the counterweight block are located on the same side of the frame to assist the lifting of the counterweight block. The operation modes of the second driven sprocket and the second driven chain are the same as and synchronous with those of the first driven sprocket and the first driven chain, which can improve the stability during the operation of the stage.

[0047] In order to further optimize the above technical solution and better realize the lifting and lowering operation of the counterweight block along the column, the opposite side walls of the two columns 12 of the second side frame body of the frame 1 are fixed with slide rails arranged along their height direction, and the side walls of the counterweight block 41 corresponding to the slide rails are fixed with sliders, which are slidably connected to the slide rails.

[0048] In some other specific embodiments, the loading platform can not only realize the layer-changing transportation of the four-way vehicle, but also realize the separate transportation of the goods. The top surface of the loading platform 2 is connected to the chain conveyor 22 corresponding to the connecting conveyor of the storage logistics conveyor line. The goods are transported to the top surface of the chain conveyor of the loading platform by a manual transport vehicle, and the driving mechanism is started to lift the loading platform to the corresponding position of the connecting conveyor of the conveyor line, and the chain conveyor is started to transport the goods.

[0049] In order to further optimize the above technical solution and ensure the overall stability of the elevator operation, a plurality of cross beams 13 are fixed between two adjacent columns 12 and at intervals along their height direction.

[0050] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hoist for a four-way shuttle vehicle to change floors, characterized in that, Comprising: A frame (1), the frame (1) including a base (11) and a plurality of vertical columns (12) fixedly arranged on the top surface of the base (11); A loading platform (2), the loading platform (2) being arranged in parallel above the base (11), and the peripheral side thereof being slidably connected to the side walls of the plurality of columns (12); A driving mechanism (3), the driving mechanism (3) including a servo motor (31), a transmission shaft (32) and a transmission chain (33); active sprockets are rotatably connected to the top and bottom ends of the plurality of columns (12); the servo motor (31) is fixed to the bottom end of the column (12); the transmission shaft (32) penetrates through the active sprockets at the bottom ends of two adjacent columns (12) and one end thereof is fixedly connected to the output shaft of the servo motor (31) to simultaneously drive the active sprockets at the bottom ends of the two columns (12) to rotate; the transmission chain (33) bypasses the active sprockets at the top and bottom ends of the column (12) and both ends thereof are fixedly connected to the side wall of the loading platform (2) to drive the lifting of the loading platform (2).

2. The elevator for layer change of a four-way shuttle car according to claim 1, characterized in that, There are four columns (12) which are respectively arranged at the four corners of the top surface of the base (11), and there are two sets of driving mechanisms (3) which are respectively fixed to the bottom ends of the two columns (12) on the first side frame of the frame (1).

3. The elevator for layer change of the four-way shuttle car according to claim 2, characterized in that, It further includes a counterweight mechanism (4), the counterweight mechanism (4) including a counterweight block (41), a first driven sprocket (42) and a first driven chain (43); the counterweight block (41) is slidably connected to the two columns (12) on the second side frame of the frame (1) opposite to the first side frame; there are four first driven sprockets (42) which are respectively rotatably connected to the top of the frame (1), and the four first driven sprockets (42) are arranged in pairs symmetrically; the first driven chain (43) sequentially bypasses the two first driven sprockets (42) on the top surface of the frame (1) opposite to the second side frame and the top surface of the frame (1) opposite to the first side frame, and both ends thereof are respectively fixedly connected to the top surface of the counterweight block (41) and the top surface of the loading platform (2) close to the first side frame.

4. The elevator for layer change of the four-way shuttle car according to claim 3, characterized in that, There are two first driven chains (43).

5. The elevator for layer change of a four-way shuttle car according to claim 3, characterized in that, It further includes a second driven sprocket (44) and a second driven chain (45); a plurality of mounting plates are fixed to the top of the frame (1), and the first driven sprockets (42) are rotatably connected to the mounting plates one by one; the second driven sprocket (44) is rotatably connected to the mounting plate corresponding to the top surface of the second side frame of the frame (1), and two second driven sprockets (44) are correspondingly arranged on each mounting plate; the second driven chain (45) sequentially bypasses the two second driven sprockets (44) and both ends thereof are respectively fixedly connected to the top surface of the counterweight block (41) and the top surface of the loading platform (2).

6. The elevator for layer change of a four-way shuttle car according to claim 3, characterized in that, Sliding rails arranged along the height direction are fixedly connected to the opposite side walls of the two columns (12) corresponding to the second side frame of the frame (1), and sliders are fixedly connected to the side walls of the counterweight block (41) corresponding to the sliding rails, and the sliders are slidably connected to the sliding rails.

7. A lift for a four-way shuttle vehicle to change floors according to claim 1, characterized in that, A four-way vehicle track (21) is fixed on the top surface of the loading platform (2) and is connected to the track of the storage logistics conveying line.

8. A lift for a four-way shuttle vehicle to change floors according to claim 7, characterized in that, The top surface of the loading platform (2) is transmission-connected to a chain conveyor (22) corresponding to a connecting conveyor of a storage logistics conveyor line.

9. The elevator for layer change of the four-way shuttle car according to claim 1, wherein, A plurality of cross beams (13) are fixed between two adjacent upright columns (12) and at intervals along their height direction.

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