Lifting frame driving device for electric stacker

Abstract

The lifting frame driving device for the electric fork lift truck comprises an electric fork lift truck body, first hydraulic telescopic rods are fixedly installed on the two sides of the front end of the electric fork lift truck body, a driving frame is fixedly installed on the telescopic portions of the front ends of the first hydraulic telescopic rods, and an installation transverse plate is fixedly installed on the rear side of the bottom end of the driving frame. Limiting straight grooves are fixedly formed in the two sides of the mounting transverse plate in a penetrating mode, limiting straight sliding arms are movably connected to the inner walls of the limiting straight grooves in an attached mode, a U-shaped supporting frame is fixedly installed on the rear side of the lower end of the driving frame, limiting pipes are fixedly installed on the two sides of the U-shaped supporting frame in a penetrating mode, and limiting sliding columns are movably connected to the inner walls of the limiting pipes in an attached mode. Lifting hydraulic telescopic rods are fixedly installed on the two sides of the rear end of the driving frame, and lifting frames are fixedly installed on the telescopic parts of the upper ends of the lifting hydraulic telescopic rods. According to the utility model, goods can be forked vertically, and meanwhile, the forking position can be adjusted by swinging forwards and backwards linearly and upwards.

Description

Technical Field

[0001] This utility model relates to the field of electric stacker technology, specifically to a lifting frame drive device for an electric stacker. Background Technology

[0002] An electric stacker is a warehousing device that uses batteries as a power source and is equipped with a drive unit and a hydraulic lifting system. It is used for loading, unloading, stacking, and short-distance transportation of palletized goods. The main functions of an electric stacker include:

[0003] Loading and Unloading: Electric stackers can easily lift palletized goods from the ground or shelves and place them in designated locations, greatly reducing the labor intensity of workers. Stacking Operations: Through its hydraulic lifting system, electric stackers can stack palletized goods on higher shelves, maximizing warehouse space utilization. Stacking Operations: Electric stackers can also tightly stack multiple palletized goods together to form stable stacks, improving warehouse storage capacity. Short-Distance Transportation: In addition to loading, unloading, and stacking operations, electric stackers can also be used for short-distance transportation within the warehouse, moving goods from one location to another, improving warehouse operational efficiency. Cost Savings: Compared to manual handling, electric stackers can significantly improve work efficiency, reduce labor costs, and lower the risk of goods damage. High Adaptability: Electric stackers typically have a small turning radius and flexible operation, adapting to various complex warehouse environments. Environmentally Friendly and Energy-Saving: Using batteries as a power source, electric stackers do not produce exhaust emissions during operation, making them environmentally friendly. Furthermore, through reasonable energy management and recovery systems, their energy efficiency can be further improved.

[0004] However, in practical applications, electric stackers are widely used in factory workshops, warehouses, distribution centers, ports, railway stations, airports, freight yards, etc., and can enter ship holds, carriages, and containers for loading, unloading, and handling of palletized goods. Most existing electric stacker lifting frame drive devices can only drive the lifting frame vertically up and down, resulting in a limited adjustment range and thus affecting the stacker's operational efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a lifting frame drive device for electric stackers, addressing the issue raised in the background section regarding the widespread use of electric stackers in factory workshops, warehouses, distribution centers, ports, railway stations, airports, freight yards, and their ability to enter ship holds, train carriages, and containers for loading, unloading, and handling of palletized goods. Existing electric stacker lifting frame drive devices mostly only allow the lifting frame to move vertically up and down, resulting in a limited adjustment range and thus affecting the efficiency of stacker operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes an electric stacker body, with first hydraulic telescopic rods fixedly installed on both sides of the front end of the electric stacker body. A drive frame is fixedly installed on the telescopic portion of the front end of the first hydraulic telescopic rods. An installation cross plate is fixedly installed on the rear side of the bottom end of the drive frame. Limiting straight grooves are fixedly installed through both sides of the installation cross plate. A limiting straight sliding arm is movably connected to the inner wall of the limiting straight groove. A U-shaped support frame is fixedly installed on the rear side of the lower end of the drive frame. Limiting tubes are fixedly installed through both sides of the U-shaped support frame. Limiting sliding columns are movably connected to the inner wall of the limiting tubes. Lifting hydraulic telescopic rods are fixedly installed on both sides of the rear end of the drive frame. A lifting frame is fixedly installed on the telescopic portion of the upper end of the lifting hydraulic telescopic rod. A lifting sliding groove is opened on the inner side of the drive frame. A lifting frame is fixedly installed on the front side of the lower end of the lifting frame.

[0007] The upper inner wall of the lifting frame is rotatably connected to a swing shaft column via a rotating shaft. L-shaped forks for picking up goods are fixedly installed on the outer curved surfaces at both ends of the swing shaft column. A swing frame is fixedly installed on the outer curved surface in the middle of the swing shaft column. A second hydraulic telescopic rod is rotatably connected to the upper rear side of the lifting frame via a pin.

[0008] Preferably, a hydraulic control cylinder is fixedly installed inside the main body of the electric stacker.

[0009] Preferably, there are two first hydraulic telescopic rods, which are symmetrically distributed on both sides of the front end of the electric stacker vehicle body.

[0010] Preferably, there are two limiting straight grooves, which are symmetrically distributed on both sides of the mounting plate, and the rear end of the limiting straight sliding arm is fixedly installed on both sides of the front end of the electric stacker vehicle body.

[0011] Preferably, there are two limiting tubes, which are symmetrically distributed on both sides of the U-shaped support frame, and the rear end of the limiting sliding column is fixedly installed on both sides of the front end of the electric stacker.

[0012] Preferably, there are two lifting hydraulic telescopic rods, which are symmetrically distributed on both sides of the rear end of the drive frame, and the outer end of the lifting frame is movably connected to the inner wall of the lifting slide.

[0013] Preferably, there are two L-shaped forks, which are symmetrically distributed with respect to the outer curved surfaces at both ends of the swing shaft column.

[0014] Preferably, the upper end of the second hydraulic telescopic rod is inclined backward, and the telescopic part of the upper end of the second hydraulic telescopic rod is rotatably connected to the rear end of the swing frame by a pin. The first hydraulic telescopic rod, the lifting hydraulic telescopic rod, and the second hydraulic telescopic rod are respectively connected to the hydraulic control cylinder through control oil pipes.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] When the L-shaped fork arm vertically lifts goods, this invention extends and retracts by controlling the first hydraulic telescopic rod. This extension and retraction causes the drive frame to move linearly back and forth. This linear movement of the drive frame, in turn, causes the limiting straight groove and limiting tube to move linearly along the outer curved surfaces of the limiting straight sliding arm and limiting sliding column. This allows the limiting straight sliding arm, in conjunction with the limiting straight groove, and the limiting sliding column, in conjunction with the limiting tube, to limit and support the linear movement of the drive frame. Simultaneously, the linear movement of the drive frame also drives the L-shaped fork arm to adjust the lifting position of the goods. At the same time, the second hydraulic telescopic rod retracts. This retraction causes the swing frame to swing downwards. The downward swing of the swing frame causes the swing shaft to rotate. The rotation of the swing shaft causes the L-shaped fork arm to swing upwards. This allows for vertical lifting of goods while simultaneously facilitating linear adjustment of the lifting position via forward and backward movement and upward swing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the electric stacker lifting frame drive device of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of the electric stacker lifting frame drive device of this utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the overall structure of the electric stacker lifting frame drive device of this utility model. Figure 3 ;

[0020] Figure 4 This is a partial structural schematic diagram of a lifting frame drive device for an electric stacker truck according to the present invention.

[0021] In the diagram: 1. Main body of the electric stacker; 2. First hydraulic telescopic rod; 3. Drive frame; 4. Mounting cross plate; 5. Limiting straight groove; 6. Limiting straight sliding arm; 7. U-shaped support frame; 8. Limiting tube; 9. Limiting sliding column; 10. Lifting hydraulic telescopic rod; 11. Lifting frame; 12. Lifting slide; 13. Lifting frame; 14. Swinging shaft column; 15. L-shaped fork arm; 16. Swinging frame; 17. Second hydraulic telescopic rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution for a lifting frame drive device for an electric stacker: it includes an electric stacker body 1, and a hydraulic control cylinder is fixedly installed inside the electric stacker body 1.

[0024] Two first hydraulic telescopic rods 2 are fixedly installed on both sides of the front end of the electric stacker body 1. The telescopic parts of the first hydraulic telescopic rods 2 are symmetrically distributed on both sides of the front end of the electric stacker body 1. A drive frame 3 is fixedly installed on the telescopic part of the front end of the first hydraulic telescopic rods 2. A mounting plate 4 is fixedly installed on the rear side of the bottom end of the drive frame 3. Two limit straight grooves 5 are fixedly installed through both sides of the mounting plate 4. Limit straight sliding arms 6 are movably connected to the inner walls of the limit straight grooves 5. The rear ends of the limit straight sliding arms 6 are fixedly installed on both sides of the front end of the electric stacker body 1. A U-shaped support frame 7 is fixedly installed on the rear side of the lower end of the drive frame 3. Two limit tubes 8 are fixedly installed through both sides of the U-shaped support frame 7. The inner wall of the limiting tube 8 is fitted with a limiting slide column 9, and the rear end of the limiting slide column 9 is fixedly installed on both sides of the front end of the electric stacker body 1. This allows the drive frame 3 to move linearly forward and backward through the limiting straight slide arm 6 in conjunction with the limiting straight groove 5 and the limiting slide column 9 in conjunction with the limiting tube 8. The rear ends of the drive frame 3 are fixedly installed with two lifting hydraulic telescopic rods 10, which are symmetrically distributed on both sides of the rear end of the drive frame 3. The upper telescopic part of the lifting hydraulic telescopic rod 10 is fixedly installed with a lifting frame 11. The inner side of the drive frame 3 is provided with a lifting slide groove 12, and the outer end of the lifting frame 11 is fitted with a sliding connection to the inner wall of the lifting slide groove 12. This allows the lifting frame 11 to move linearly through the lifting slide groove 12. The lower front end of the lifting frame 11 is fixedly installed with a lifting frame 13.

[0025] The upper inner wall of the lifting frame 13 is rotatably connected to a swing shaft column 14 via a rotating shaft. L-shaped forks 15 for picking up goods are fixedly installed on the outer curved surfaces at both ends of the swing shaft column 14. There are two L-shaped forks 15, which are symmetrically distributed with respect to the outer curved surfaces at both ends of the swing shaft column 14. A swing frame 16 is fixedly installed on the outer curved surface in the middle of the swing shaft column 14. The upper rear side of the lifting frame 13 is rotatably connected to a second hydraulic telescopic rod 17 via a pin. The upper end of the second hydraulic telescopic rod 17 is inclined backward. The telescopic part of the upper end of the second hydraulic telescopic rod 17 is rotatably connected to the rear end of the swing frame 16 via a pin. The first hydraulic telescopic rod 2, the lifting hydraulic telescopic rod 10, and the second hydraulic telescopic rod 17 are respectively connected to the hydraulic control cylinder via control oil pipes.

[0026] Working principle: In use, this utility model controls the extension and retraction of the lifting hydraulic telescopic rod 10. When the lifting hydraulic telescopic rod 10 extends and retracts, it drives the lifting frame 11 to move vertically up and down along the inner wall of the lifting slide 12. When the lifting frame 11 moves vertically up and down, it drives the lifting frame 13 to move vertically up and down. When the lifting frame 13 moves vertically up and down, it synchronously drives the L-shaped fork arm 15 to move vertically up and down. When the L-shaped fork arm 15 moves vertically up and down, it vertically lifts the goods.

[0027] When the L-shaped fork arm 15 vertically lifts goods, the first hydraulic telescopic rod 2 is extended or retracted by control. When the first hydraulic telescopic rod 2 extends or retracts, it drives the drive frame 3 to move linearly back and forth. This linear movement of the drive frame 3 drives the limiting straight groove 5 and the limiting tube 8 to move linearly back and forth along the outer curved surfaces of the limiting straight sliding arm 6 and the limiting sliding column 9, respectively. This allows the limiting straight sliding arm 6, in conjunction with the limiting straight groove 5, and the limiting sliding column 9, in conjunction with the limiting tube 8, to provide limiting support for the linear movement of the drive frame 3. When the line moves, it will synchronously drive the L-shaped fork arm 15 to move back and forth in a straight line to adjust the picking position of the goods. At the same time, the second hydraulic telescopic rod 17 is retracted by control. When the second hydraulic telescopic rod 17 retracts, it will drive the swing frame 16 to swing downward. When the swing frame 16 swings downward, it will drive the swing shaft column 14 to rotate. When the swing shaft column 14 rotates, it will drive the L-shaped fork arm 15 to swing upward. Thus, the goods can be picked up vertically up and down, while the picking position can be adjusted in a straight line back and forth and upward swing.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting frame drive device for an electric stacker truck, characterized in that: The device includes an electric stacker body (1), on which first hydraulic telescopic rods (2) are fixedly installed on both sides of the front end of the electric stacker body (1). A drive frame (3) is fixedly installed on the telescopic part of the front end of the first hydraulic telescopic rods (2). A mounting plate (4) is fixedly installed on the rear side of the bottom end of the drive frame (3). Limiting straight grooves (5) are fixedly installed through both sides of the mounting plate (4). Limiting straight sliding arms (6) are movably connected to the inner wall of the limiting straight grooves (5). A drive frame (3) is fixedly installed on the rear side of the lower end. A U-shaped support frame (7) is provided, with limit tubes (8) fixedly installed through both sides of the U-shaped support frame (7). Limit tubes (8) are movably connected to the inner wall of the limit tubes (8). Lifting hydraulic telescopic rods (10) are fixedly installed on both sides of the rear end of the drive frame (3). A lifting frame (11) is fixedly installed on the upper telescopic part of the lifting hydraulic telescopic rod (10). A lifting slide groove (12) is opened on the inner side of the drive frame (3). A lifting frame (13) is fixedly installed on the front side of the lower end of the lifting frame (11). The upper inner wall of the lifting frame (13) is rotatably connected to a swing shaft column (14) via a rotating shaft. L-shaped forks (15) for picking up goods are fixedly installed on the outer curved surfaces at both ends of the swing shaft column (14). A swing frame (16) is fixedly installed on the outer curved surface in the middle of the swing shaft column (14). A second hydraulic telescopic rod (17) is rotatably connected to the upper rear side of the lifting frame (13) via a pin.

2. The electric stacker lifting frame drive device according to claim 1, characterized in that: The electric stacker truck body (1) is internally equipped with a hydraulic control cylinder.

3. The electric stacker lifting frame drive device according to claim 2, characterized in that: There are two first hydraulic telescopic rods (2), which are symmetrically distributed on both sides of the front end of the electric stacker body (1).

4. The electric stacker lifting frame drive device according to claim 3, characterized in that: There are two limiting straight grooves (5), which are symmetrically distributed on both sides of the mounting horizontal plate (4). The rear end of the limiting straight sliding arm (6) is fixedly installed on both sides of the front end of the electric stacker body (1).

5. The electric stacker lifting frame drive device according to claim 4, characterized in that: There are two limiting tubes (8), which are symmetrically distributed on both sides of the U-shaped support frame (7). The rear end of the limiting slide column (9) is fixedly installed on both sides of the front end of the electric stacker body (1).

6. The electric stacker lifting frame drive device according to claim 5, characterized in that: There are two lifting hydraulic telescopic rods (10), which are symmetrically distributed on both sides of the rear end of the drive frame (3). The outer end of the lifting frame (11) is movably connected to the inner wall of the lifting slide (12).

7. The electric stacker lifting frame drive device according to claim 6, characterized in that: There are two L-shaped forks (15), which are symmetrically distributed at both ends of the swing shaft column (14) with respect to the outer curved surfaces.

8. The electric stacker lifting frame drive device according to claim 7, characterized in that: The upper end of the second hydraulic telescopic rod (17) is tilted backward. The telescopic part of the upper end of the second hydraulic telescopic rod (17) is rotatably connected to the rear end of the swing frame (16) by a pin. The first hydraulic telescopic rod (2), the lifting hydraulic telescopic rod (10), and the second hydraulic telescopic rod (17) are respectively connected to the hydraulic control cylinder through control oil pipes.

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