Empty box stacking machine facilitating size conversion

Abstract

The utility model relates to the technical field of stacking machines, and discloses an empty box stacking machine convenient for size conversion, which comprises an adjusting mechanism, lifting appliance bodies are arranged in the middle of the front side wall of the adjusting mechanism close to the two sides, the two lifting appliance bodies are oppositely distributed in a mirror image manner, and each lifting appliance body comprises a lifting appliance main body; movable mounting grooves are formed in the positions, close to the upper ends, of the middles of the front side walls of the two lifting appliance bodies correspondingly, hydraulic oil cylinders are mounted in the middles of the inner side walls of the two movable mounting grooves correspondingly, the output ends of the two hydraulic oil cylinders are connected with connecting blocks correspondingly, and trapezoidal blocks are mounted in the middles of the front side walls of the two connecting blocks correspondingly. According to the container lifting appliance, the hydraulic oil cylinder and the trapezoidal block structure on the lifting appliance main body can realize accurate adjustment of specific parts of the lifting appliance, and the accurate adjustment function can ensure that the lifting appliance can accurately reach a proper position and firmly clamp containers with different sizes when the containers are lifted, so that the accuracy and the reliability of operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of stacker technology, and in particular to a stacker for easy conversion of empty boxes of different sizes. Background Technology

[0002] Empty container stackers are primarily used for stacking and handling empty containers. They can lift empty containers from the ground to a certain height and stack them in designated locations, or remove stacked empty containers and move them to other locations. Empty container stackers play a crucial role in improving the space utilization and operational efficiency of container yards, and are mainly used in ports, container yards, and logistics parks. In these locations, empty container stackers can efficiently complete the stacking and handling of empty containers, improving yard operational efficiency and space utilization. Simultaneously, empty container stackers can also be used in conjunction with other container handling equipment to achieve rapid container loading, unloading, and transshipment.

[0003] However, existing technologies have the following shortcomings: In logistics and port operations, containers of various sizes and specifications are frequently encountered. Traditional empty container stacker spreaders are often only suitable for containers of specific sizes. For containers of different sizes, different spreaders or complex adjustments are required, which not only wastes time but also increases operating costs. For example, compared to standard containers, coal containers have deviations in the position of the lifting lock holes, requiring the use of a front-end crane for lifting operations, resulting in low yard utilization (stack height of four layers) and low operational efficiency. Therefore, those skilled in the art have provided an empty container stacker that is easy to convert in size to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stacker for empty containers that facilitates size conversion.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stacker for empty containers that is easy to convert in size, comprising an adjustment mechanism, wherein a lifting body is provided on both sides of the middle of the front side wall of the adjustment mechanism, the two lifting bodies are distributed in a mirror image opposite each other, each of the two lifting bodies includes a lifting main body, a movable mounting groove is provided on the upper part of the middle of the middle of the front side wall of each of the two lifting main bodies, a hydraulic cylinder is installed in the middle of the inner side wall of each of the two movable mounting grooves, a connecting block is connected to the output end of each of the two hydraulic cylinders, a trapezoidal block is installed in the middle of the front side wall of each of the two connecting blocks, the two trapezoidal blocks are distributed in a mirror image opposite each other, and the two trapezoidal blocks are respectively slidably connected to the middle of the inner side wall of the corresponding movable mounting groove;

[0006] Furthermore, the two lifting devices, the main body and the hydraulic cylinder, are arranged in a mirror image opposite each other. A movable mounting groove is provided in the middle of the upper part of the front side wall of the main body of the lifting device. The hydraulic cylinder is installed in the groove, and the output end of the hydraulic cylinder is connected to a connecting block. A trapezoidal block is installed on the front side wall of the connecting block. The trapezoidal block can slide in the movable mounting groove. When it is necessary to adjust the specific position of the lifting device, the hydraulic cylinder is activated, pushing the connecting block and the trapezoidal block to move in the movable mounting groove, so as to achieve the functional adjustment of a specific distance.

[0007] Preferably, it also includes a stacker truck, wherein a hydraulic lifting mechanism is installed on the front side wall of the stacker truck near the middle position, and a connecting mounting frame is installed on the front side wall of the hydraulic lifting mechanism near the bottom position, wherein the connecting mounting frame is connected to the mounting end of the adjusting mechanism;

[0008] Furthermore, the stacker truck, as the basic mobile platform of the entire equipment, provides power and mobility for the equipment to operate in the yard. When the stacker is started, the stacker truck is ready and waiting to perform subsequent operations.

[0009] Preferably, an adjustable locking seat is installed at the top center of each of the two lifting device bodies, and an adjustment groove is opened at the top center of each of the two adjustable locking seats on the right side. An adjustment block is rotatably connected through the top center of each of the two adjustment grooves, and the bottom of each of the two adjustment blocks passes through the top center of the corresponding adjustable locking seat. A driven adjustment block is installed at the bottom of each of the two adjustment blocks and at the center of the inner sidewall of each of the two adjustable locking seats.

[0010] Furthermore, an adjustable locking seat is installed at the top center of the lifting device body via an adjustable locking seat and a locking head. An adjustment groove is provided at the top center right side of the adjustable locking seat. An adjustment block is rotatably connected through the top center of the adjustment groove. The bottom of the adjustment block is connected to the driven adjustment block after passing through the top center of the adjustable locking seat. A locking slide groove is provided at the bottom center right side of the adjustable locking seat.

[0011] Preferably, a locking groove is provided at the bottom center right side of both adjustable locking seats, and a connecting rod is connected to the bottom center of each of the two driven adjusting blocks. The sliding ends of the two connecting rods are slidably connected to the inner sidewall of the corresponding locking groove, and a lock head is installed at the bottom center of each of the two connecting rods.

[0012] Furthermore, a connecting rod is connected to the middle position of the bottom of the driven adjusting block. The sliding end of the connecting rod is slidably connected in the locking groove. A lock head is installed at the middle position of the bottom of the connecting rod. By rotating the adjusting block, the driven adjusting block is driven to rotate, thereby causing the connecting rod to slide in the locking groove, thereby adjusting the position of the lock head and realizing the locking operation of containers of different sizes.

[0013] Preferably, a limiting base is provided at the bottom middle position of the inner sidewall of the adjusting mechanism, a support seat is installed at the top middle position of the limiting base, a double-end extension mechanism is installed at the top middle position of the support seat, and a limiting groove is provided at the middle position of the front sidewall of the two movable ends of the double-end extension mechanism.

[0014] Furthermore, the double-end extension mechanism is installed at the top center of the bidirectional synchronous cylinder support. Limiting grooves are provided at the center of the front sidewalls of both movable ends of the double-end extension mechanism. Limiting discs installed at the bottom center of the rear sidewalls of the two lifting device bodies are slidably connected within the two limiting grooves. Limiting wheels installed at the center of the rear sidewalls of the limiting discs are fitted against the corresponding rear center of the movable ends of the double-end extension mechanism.

[0015] Preferably, a limiting plate is installed at the bottom middle of the rear side wall of each of the two lifting device bodies. The two limiting plates are slidably connected to the middle of the inner side wall of the two limiting grooves. A limiting wheel is installed at the middle of the rear side wall of each of the two limiting plates. The two limiting wheels are respectively attached to the middle of the rear side of the movable end of the corresponding double-end extension mechanism.

[0016] Furthermore, the limiting plate on the rear side wall of the spreader body slides within the limiting groove at the movable end of the double-end extension mechanism, ensuring the stability and accuracy of the spreader body's movement. At the same time, the limiting wheel further ensures the stability of the spreader body during movement, preventing deviation or swaying.

[0017] Preferably, a bidirectional synchronous cylinder is installed at the middle position of the front side wall of the double-end extension mechanism. Both output ends of the bidirectional synchronous cylinder are connected to piston rods. Fixing plates are installed on the left and right sides of the two piston rods respectively. The right and left sides of the two fixing plates are respectively installed at the bottom middle position of the left side wall and the bottom middle position of the right side wall of the corresponding lifting device body.

[0018] Furthermore, fixing plates are installed on the left and right walls of the two piston rods respectively. The fixing plates are installed at the bottom middle position of the left wall and the bottom middle position of the right wall of the corresponding spreader body. When it is necessary to adjust the distance between the two spreader bodies to accommodate containers of different sizes, the bidirectional synchronous cylinder is activated to push the piston rods to move to the sides or the middle.

[0019] Preferably, the movable end of the hydraulic lifting mechanism is equipped with a lifting frame, and the connecting mounting frame is installed at the mounting end of the lifting frame;

[0020] Furthermore, the lifting frame acts to move the lifting device up and down.

[0021] This utility model has the following beneficial effects:

[0022] In this invention, the hydraulic cylinder and trapezoidal block structure on the main body of the spreader enable precise adjustment of specific parts of the spreader. This precise adjustment function ensures that the spreader can accurately reach the appropriate position and firmly clamp containers of different sizes when lifting them, thus improving the accuracy and reliability of the operation.

[0023] In this invention, the adjustable locking seat and lock head design allows the lock head position to be adjusted by rotating the adjusting block, which can tightly lock containers of different sizes. This precise locking function can prevent the container from loosening or falling off during hoisting, ensuring the safety and stability of the operation.

[0024] In this invention, the bidirectional synchronous hydraulic cylinder ensures that the two lifting device bodies move synchronously when adjusting the spacing, avoiding deviation. At the same time, the limiting plate on the rear side wall of the lifting device body slides in the limiting groove at the movable end of the double-end extension mechanism, and the setting of the limiting wheel further ensures the stability and accuracy of the lifting device body during movement, preventing deviation or shaking. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a stacker for empty containers that is easy to convert in size, as proposed in this utility model.

[0026] Figure 2 This is a three-dimensional schematic diagram of the lifting device body;

[0027] Figure 3 A three-dimensional schematic diagram of the adjustment mechanism;

[0028] Figure 4 This is a side view of a stacker for empty containers that is easy to convert in size, as proposed in this utility model.

[0029] Figure 5 This is a partial top-section schematic diagram of the adjustable locking seat.

[0030] Legend:

[0031] 1. Stacker truck; 2. Hydraulic lifting mechanism; 3. Connecting mounting frame; 4. Adjusting mechanism; 5. Lifting device body; 6. Lifting frame; 7. Fixing plate; 8. Lifting device body; 9. Adjustable locking seat; 10. Adjusting block; 11. Adjusting groove; 12. Driven adjusting block; 13. Locking slide groove; 14. Lock head; 15. Trapezoidal block; 16. Connecting block; 17. Hydraulic cylinder; 18. Movable mounting groove; 19. Connecting rod; 20. Limiting base; 21. Support seat; 22. Double-end extension mechanism; 23. Bidirectional synchronous cylinder; 24. Piston rod; 25. Limiting slide groove; 26. Limiting plate. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 - Figure 5 A stacker for easy-to-change-size empty containers includes an adjustment mechanism 4. Two lifting bodies 5 are positioned on either side of the middle of the front side wall of the adjustment mechanism 4, arranged in a mirror image. Each lifting body 5 includes a lifting main body 8. Movable mounting slots 18 are formed at the upper middle of the front side wall of each of the two lifting main bodies 8. Hydraulic cylinders 17 are installed at the middle of the inner side wall of each of the two movable mounting slots 18. Connecting blocks 16 are connected to the output ends of each of the two hydraulic cylinders 17. Trapezoidal blocks 15 are installed at the middle of the front side wall of each of the two connecting blocks 16, arranged in a mirror image. The two lifting bodies 5, namely the lifting body 8 and the hydraulic cylinder 17, are mirror-image opposite each other. The lifting body 8 has a movable mounting groove 18 at the upper middle position of the front side wall of the lifting body 8. The hydraulic cylinder 17 is installed in the groove. The output end of the hydraulic cylinder 17 is connected to the connecting block 16. The front side wall of the connecting block 16 is equipped with a trapezoidal block 15. The trapezoidal block 15 can slide in the movable mounting groove 18. When it is necessary to adjust the specific position of the lifting device, the hydraulic cylinder 17 is activated, pushing the connecting block 16 and the trapezoidal block 15 to move in the movable mounting groove 18 to achieve the functional adjustment of a specific distance.

[0034] It also includes a stacker truck 1. A hydraulic lifting mechanism 2 is installed on the middle of the front side wall of the stacker truck 1. A connecting mounting frame 3 is installed on the bottom of the middle of the front side wall of the hydraulic lifting mechanism 2. The connecting mounting frame 3 is connected to the mounting end of the adjusting mechanism 4. The stacker truck 1 serves as the basic mobile platform for the entire equipment, providing power and mobility for the equipment to operate in the yard. When the stacker is started, the stacker truck 1 is ready and waiting to perform subsequent operations. A lifting frame 6 is installed on the movable end of the hydraulic lifting mechanism 2. The connecting mounting frame 3 is installed on the mounting end of the lifting frame 6. The lifting frame 6 acts to move the lifting device up and down.

[0035] Adjustable locking seats 9 are installed at the top center of both lifting device bodies 8. Adjustment slots 11 are provided at the top center right side of both adjustable locking seats 9. Adjustment blocks 10 are rotatably connected through the top center of each adjustment slot 11. The bottoms of the two adjustment blocks 10 pass through the corresponding top center of the adjustable locking seats 9. Driven adjustment blocks 12 are installed at the bottom of each adjustment block 10 and at the center of the inner sidewall of each adjustable locking seat 9. Adjustable locking seats 9 are controlled by lock heads 14. Adjustable locking seats 9 are installed at the top center of both lifting device bodies 8. Adjustment slots 11 are provided at the top center right side of both adjustable locking seats 9. Adjustment blocks 10 are rotatably connected through the top center of each adjustment slot 11. The bottoms of adjustment blocks 10 pass through the top center of the adjustable locking seats 9 and connect to the driven adjustment blocks 12. Locking grooves 13 are provided at the bottom center right side of both adjustable locking seats 9. A locking groove 13 is provided. Two driven adjusting blocks 12 are respectively connected to the middle of their bottom positions with connecting rods 19. The sliding ends of the two connecting rods 19 are respectively slidably connected to the inner sidewall of the corresponding locking groove 13. Lock heads 14 are installed at the middle of the bottom positions of the two connecting rods 19. The connecting rods 19 are connected to the middle of the bottom positions of the driven adjusting blocks 12. The sliding ends of the connecting rods 19 are slidably connected to the locking groove 13. Lock heads 14 are installed at the middle of the bottom positions of the connecting rods 19. By rotating the adjusting block 10, the driven adjusting block 12 is driven to rotate, thereby causing the connecting rods 19 to slide in the locking groove 13, thereby adjusting the position of the lock heads 14 and realizing the locking operation of containers of different sizes. A limit base 20 is provided at the middle of the bottom of the inner sidewall of the adjusting mechanism 4. A support seat 21 is installed at the middle of the top of the limit base 20. A double-end extension mechanism 22 is installed at the middle of the top of the support seat 21. Limit grooves 25 are provided at the middle of the front sidewall of the two movable ends of the double-end extension mechanism 22.

[0036] The double-end extension mechanism 22 is installed at the top middle position of the support base 21 of the bidirectional synchronous cylinder 23. The double-end extension mechanism 22 has a limit groove 25 at the middle position of the front side wall of each of the two movable ends of the double-end extension mechanism 22. Limiting discs 26, installed at the bottom center of the rear sidewalls of the two lifting device bodies 8, are slidably connected to two limiting grooves 25. Limiting wheels, installed at the center of the rear sidewalls of the limiting discs 26, are attached to the center of the rear side of the corresponding double-end extension mechanism 22's movable end. Limiting discs 26 are installed at the bottom center of the rear sidewalls of both lifting device bodies 8, and are slidably connected to the center of the inner sidewalls of the two limiting grooves 25. Limiting wheels are installed at the center of the rear sidewalls of both limiting discs 26, and are attached to the center of the rear side of the corresponding double-end extension mechanism 22's movable end. The limiting discs 26 on the rear sidewalls of the lifting device bodies 8 slide within the limiting grooves 25 of the movable end of the double-end extension mechanism 22, ensuring the stability and accuracy of the lifting device body 8's movement. Simultaneously, the limiting wheels further ensure the stability of the lifting device body 8 during movement, preventing deviation or swaying. A bidirectional synchronous hydraulic cylinder 23 is installed in the middle of the front side wall of the mechanism 22. Both output ends of the bidirectional synchronous hydraulic cylinder 23 are connected to piston rods 24. Fixing plates 7 are installed on the left and right sides of the two piston rods 24 respectively. The right and left sides of the two fixing plates 7 are respectively installed at the bottom middle position of the left side wall and the bottom middle position of the right side wall of the corresponding spreader body 8. When it is necessary to adjust the distance between the two spreader bodies 5 to accommodate containers of different sizes, the bidirectional synchronous hydraulic cylinder 23 is activated, pushing the piston rods 24 to move to the sides or the middle. A lifting frame 6 is installed on the movable end of the hydraulic lifting mechanism 2. A connecting mounting frame 3 is installed on the mounting end of the lifting frame 6. The spreader moves up and down through the action of the lifting frame 6.

[0037] Working principle: It mainly consists of a stacker truck 1, a hydraulic lifting mechanism 2, a connecting mounting frame 3, an adjustment mechanism 4, and two lifting device bodies 5. The stacker truck 1 serves as the basic mobile platform for the entire equipment, providing power and mobility for the equipment to operate in the yard. When the stacker is started, the stacker truck 1 is ready and waiting to perform subsequent operations.

[0038] A hydraulic lifting mechanism 2 is installed on the front side wall of the stacker truck 1 near the middle. This mechanism, powered by a hydraulic system, enables vertical lifting and lowering. A connecting mounting bracket 3 is installed on the bottom of the front side wall of the hydraulic lifting mechanism 2. The connecting mounting bracket 3 is connected to the adjusting mechanism 4, transmitting the movement of the hydraulic lifting mechanism 2 to the adjusting mechanism 4, thereby driving the entire lifting system to perform lifting and lowering operations.

[0039] The two spreader bodies 5, the spreader body 8 and the hydraulic cylinder 17, are arranged in a mirror image opposite each other. A movable mounting groove 18 is provided at the upper middle part of the front side wall of the spreader body 8. The hydraulic cylinder 17 is installed in the groove, and the output end of the hydraulic cylinder 17 is connected to a connecting block 16. A trapezoidal block 15 is installed on the front side wall of the connecting block 16, and the trapezoidal block 15 can slide within the movable mounting groove 18. When a specific position of the spreader needs to be adjusted, the hydraulic cylinder 17 is activated, pushing the connecting block 16 and the trapezoidal block 15 to move within the movable mounting groove 18, achieving a specific functional adjustment. In actual operation, compared to standard containers, the position of the lifting lock hole of the coal box is deviated, and only a front-end crane can be used for lifting operations, resulting in low yard utilization (stack height of four layers) and low operating efficiency. There is also the problem that the spreader lock head 14 cannot be engaged in the coal box lock hole. In this solution... An adjustable locking seat 9 is installed at the top center of the control spreader body 8 via the adjustable locking seat 9 and the locking head 14. An adjustment groove 11 is provided at the top center right side of the adjustable locking seat 9. An adjustment block 10 is rotatably connected through the top center of the adjustment groove 11. The bottom of the adjustment block 10 is connected to the driven adjustment block 12 after passing through the top center of the adjustable locking seat 9. A locking slide groove 13 is provided at the bottom center right side of the adjustable locking seat 9. A connecting rod 19 is connected at the bottom center of the driven adjustment block 12. The sliding end of the connecting rod 19 is slidably connected in the locking slide groove 13. A locking head 14 is installed at the bottom center of the connecting rod 19. By rotating the adjustment block 10, the driven adjustment block 12 is driven to rotate, thereby causing the connecting rod 19 to slide in the locking slide groove 13, thereby adjusting the position of the locking head 14 and realizing the locking operation of containers of different sizes.

[0040] The limiting base 20 and the support base 21 are provided at the middle position of the bottom of the inner side wall of the adjusting mechanism 4. The supporting base 21 is installed at the middle position of the top of the limiting base 20. The supporting base 21 provides stable support for the double-end extension mechanism 22 above.

[0041] The double-end extension mechanism 22 is installed at the top center of the support base 21 for the bidirectional synchronous cylinder 23. Limiting grooves 25 are provided at the center of the front sidewalls of both movable ends of the double-end extension mechanism 22. Limiting discs 26, installed at the bottom center of the rear sidewalls of the two spreader bodies 8, are slidably connected within the two limiting grooves 25. Limiting wheels, installed at the center of the rear sidewalls of the limiting discs 26, are fitted against the corresponding rear center of the movable end of the double-end extension mechanism 22. The bidirectional synchronous cylinder 23 is installed at the center of the front sidewall of the double-end extension mechanism 22. Piston rods 24 are connected to both output ends of the bidirectional synchronous cylinder 23. Fixing plates 7 are installed on the left and right sides of the two piston rods 24, respectively, at the bottom center of the left and right sides of the corresponding spreader bodies 8. When the distance between the two spreader bodies 5 needs to be adjusted to accommodate containers of different sizes, the bidirectional synchronous cylinder 23 is activated, pushing the piston rods 24 to the sides or center. The piston rod 24 drives the lifting device body 8 to move through the fixed plate 7. The limiting plate 26 on the rear side wall of the lifting device body 8 slides in the limiting groove 25 at the movable end of the double-end extension mechanism 22 to ensure the stability and accuracy of the movement of the lifting device body 8. At the same time, the limiting wheel further ensures the stability of the lifting device body 8 during the movement process and prevents deviation or shaking.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stacker for empty containers that facilitates size conversion, characterized in that, The device includes an adjustment mechanism (4), on which two lifting bodies (5) are provided at the middle of the front side wall of the adjustment mechanism (4) near both sides. The two lifting bodies (5) are arranged in a mirror image opposite each other. Each of the two lifting bodies (5) includes a lifting body (8). The upper middle of the front side wall of each of the two lifting bodies (8) is provided with a movable mounting groove (18). A hydraulic cylinder (17) is installed at the middle of the inner side wall of each of the two movable mounting grooves (18). The output end of each of the two hydraulic cylinders (17) is connected to a connecting block (16). A trapezoidal block (15) is installed at the middle of the front side wall of each of the two connecting blocks (16). The two trapezoidal blocks (15) are arranged in a mirror image opposite each other. The two trapezoidal blocks (15) are slidably connected to the middle of the inner side wall of the corresponding movable mounting groove (18).

2. The stacker for easy conversion of empty containers according to claim 1, characterized in that: It also includes a stacker truck (1), a hydraulic lifting mechanism (2) is installed on the front side wall of the stacker truck (1) near the middle position, and a connecting mounting frame (3) is installed on the middle of the front side wall of the hydraulic lifting mechanism (2) near the bottom position, and the connecting mounting frame (3) is connected to the mounting end of the adjusting mechanism (4).

3. The stacker for easy conversion of empty containers according to claim 1, characterized in that: An adjustable locking seat (9) is installed at the top center of each of the two lifting device bodies (8). An adjustment groove (11) is opened at the top center of each of the two adjustable locking seats (9) on the right side. An adjustment block (10) is rotatably connected through the top center of each of the two adjustment grooves (11). The bottom of each of the two adjustment blocks (10) passes through the top center of the corresponding adjustable locking seat (9). A driven adjustment block (12) is installed at the bottom of each of the two adjustment blocks (10) and at the center of the inner sidewall of each of the two adjustable locking seats (9).

4. The stacker for easy conversion of empty containers according to claim 3, characterized in that: Locking grooves (13) are provided at the bottom center of the two adjustable locking seats (9) on the right side. Connecting rods (19) are connected to the bottom center of the two driven adjusting blocks (12). The sliding ends of the two connecting rods (19) are slidably connected to the inner sidewall of the corresponding locking grooves (13). Lock heads (14) are installed at the bottom center of the two connecting rods (19).

5. A stacker for easy conversion of empty containers according to claim 1, characterized in that: A limiting base (20) is provided at the middle position of the bottom of the inner side wall of the adjusting mechanism (4). A support seat (21) is installed at the middle position of the top of the limiting base (20). A double-end extension mechanism (22) is installed at the middle position of the top of the support seat (21). A limiting groove (25) is provided at the middle position of the front side wall of the two movable ends of the double-end extension mechanism (22).

6. A stacker for empty containers that facilitates size conversion according to claim 1, characterized in that: Limiting discs (26) are installed at the bottom of the middle of the rear sidewall of the two lifting device bodies (8). The two limiting discs (26) are slidably connected to the middle of the inner sidewall of the two limiting grooves (25). Limiting wheels are installed at the middle of the rear sidewall of the two limiting discs (26). The two limiting wheels are respectively attached to the middle of the rear side of the movable end of the corresponding double-end extension mechanism (22).

7. A stacker for easy-to-change-size empty containers according to claim 5, characterized in that: A bidirectional synchronous cylinder (23) is installed in the middle of the front side wall of the double-end extension mechanism (22). Both output ends of the bidirectional synchronous cylinder (23) are connected to piston rods (24). Fixing plates (7) are installed on the left and right sides of the two piston rods (24). The right and left sides of the two fixing plates (7) are respectively installed in the middle of the bottom of the left side wall and the middle of the bottom of the right side wall of the corresponding lifting body (8).

8. A stacker for easy conversion of empty containers according to claim 2, characterized in that: The hydraulic lifting mechanism (2) has a lifting frame (6) installed on its movable end, and the connecting mounting frame (3) is installed on the mounting end of the lifting frame (6).

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