A container spreader

Abstract

This utility model relates to the field of container technology, and more particularly to a container spreader, including a traction plate, a fixed column fixedly installed at the bottom of the traction plate, and a mounting box with open ends fixedly installed at the bottom of the fixed column. Two symmetrically arranged movable blocks are slidably arranged inside the mounting box. A first sliding frame is fixedly installed at the end of each of the two movable blocks, and two symmetrically arranged movable frames are slidably arranged inside each of the two first sliding frames. Limit frames are fixedly installed at the bottom of each of the four movable frames. This utility model adjusts the position of the spreader within the limit frames by extending and retracting an electric telescopic rod, placing the spreader directly above the twisted corner piece, facilitating container lifting. It avoids the inability of a fixed-spaced spreader to simultaneously lift all four corner pieces of a container. Combined with the rotation of a bidirectional lead screw and the rotation of a drive gear, the distance between the four spreaders can be adjusted, facilitating the lifting of containers of different sizes and increasing the equipment's versatility.

Description

Technical Field

[0001] This utility model relates to the field of container technology, and in particular to a container spreader. Background Technology

[0002] A shipping container is a set of tools that can carry packaged or unpackaged goods for transport and is easy to load, unload and handle using mechanical equipment.

[0003] Container spreaders are key pieces of equipment specifically designed for the efficient and safe loading, unloading, and handling of containers in ports, railway freight stations, container transshipment stations, and other locations. They act as an "intermediate connecting device" between the crane and the container, securing the four corner pieces on the top of the container through a precision locking system. In existing technologies, container spreaders use a precision locking system to secure the four corner pieces on the top of the container and connect to a crane to safely lift the container for transportation, stacking, or loading and unloading. However, containers are prone to collisions during transportation, causing them to impact each other and resulting in bending of parts of the container. This can twist the position of the four corner pieces, making it difficult to accurately align the four corner pieces on the top of the container with the locking system, and making it easy for the locking system to fail to lock the four corner pieces on the top of the container. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of not being able to adjust the position of the lock to lift curved containers in the prior art, and to propose a container lifting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A container spreader includes a towing plate, a fixed column fixedly installed at the bottom end of the towing plate, an installation box with open ends fixedly installed at the bottom end of the fixed column, two symmetrically arranged movable blocks slidably arranged inside the installation box, a first sliding frame fixedly installed at the end of each of the two movable blocks, and two symmetrically arranged movable frames slidably arranged inside each of the two first sliding frames, and a limit frame fixedly installed at the bottom end of each of the four movable frames, and a spreader for lifting the container slidably arranged inside each of the four limit frames.

[0007] Preferably, a bidirectional lead screw is rotatably installed inside the traction plate, and both ends of the bidirectional lead screw are fitted with movable blocks through threads. Both movable blocks are slidably disposed inside the traction plate, and both movable blocks are fixedly installed with connecting rods at their bottom ends, and the two connecting rods are disposed on both sides of the fixed column.

[0008] Preferably, the traction plate has two symmetrically arranged limiting grooves, the two movable blocks are slidably arranged in the limiting grooves, and the bottom ends of the two connecting rods are fixedly installed with a second sliding frame. The second sliding frame has two symmetrically arranged sliding rods slidably arranged in it, and the sliding rods are fixedly connected to the movable frame.

[0009] Preferably, a drive gear is rotatably mounted inside the mounting box via a rotating shaft. Two racks are arranged symmetrically on both sides of the drive gear, and the two racks are fixedly connected to two moving blocks respectively.

[0010] Preferably, a fixed plate is fixedly installed at the bottom of the mobile frame, and an electric telescopic rod is fixedly installed on the side wall of the fixed plate. The output end of the electric telescopic rod is fixedly connected to the lifting device.

[0011] Preferably, a servo motor for driving a bidirectional lead screw to rotate is fixedly installed on the side wall of the traction plate, and a drive motor for driving a drive gear to rotate is fixedly installed at the bottom of the mounting box.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. This utility model adjusts the position of the spreader within the limit frame by extending and retracting the electric telescopic rod, and places the spreader directly above the twisted corner piece, which facilitates the lifting of the container and avoids the inability of spreaders with fixed spacing to lift the four corner pieces of the container at the same time.

[0014] 2. This utility model adjusts the distance between the four spreaders by rotating the bidirectional lead screw and the drive gear, which facilitates the lifting of containers of different sizes and increases the range of applications of the equipment. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of a container spreader proposed in this utility model;

[0016] Figure 2 This is a front sectional view of a container spreader proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the drive gear and rack.

[0018] In the diagram: 1. Traction plate; 2. Fixed column; 3. Bidirectional lead screw; 4. Servo motor; 5. Movable block; 6. Limiting groove; 7. Connecting rod; 8. Mounting box; 9. Drive gear; 10. Rack; 11. Moving block; 12. First sliding frame; 13. Moving frame; 14. Second sliding frame; 15. Sliding rod; 16. Drive motor; 17. Fixed plate; 18. Electric telescopic rod; 19. Limiting frame; 20. Lifting device. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-3 A container spreader includes a traction plate 1, a fixed column 2 fixedly installed at the bottom of the traction plate 1, an installation box 8 with open ends fixedly installed at the bottom of the fixed column 2, and two symmetrically arranged movable blocks 11 slidably arranged inside the installation box 8. A first sliding frame 12 is fixedly installed at the end of each of the two movable blocks 11, and two symmetrically arranged movable frames 13 are slidably arranged inside each of the two first sliding frames 12. Limit frames 19 are fixedly installed at the bottom of each of the four movable frames 13, and a spreader 20 for lifting containers is slidably arranged inside each of the four limit frames 19.

[0021] A bidirectional lead screw 3 is rotatably installed inside the traction plate 1, and both ends of the bidirectional lead screw 3 are fitted with movable blocks 5 through threads. Both movable blocks 5 are slidably installed inside the traction plate 1, and both bottom ends of the two movable blocks 5 are fixedly installed with connecting rods 7, which are located on both sides of the fixed column 2.

[0022] Two symmetrically arranged limiting grooves 6 are provided in the traction plate 1. Two movable blocks 5 are slidably arranged in the limiting grooves 6. The bottom ends of the two connecting rods 7 are fixedly installed with second sliding frames 14. Two symmetrically arranged sliding rods 15 are slidably arranged in the second sliding frame 14. The sliding rods 15 and the moving frame 13 are fixedly connected.

[0023] Inside the mounting box 8, a drive gear 9 is rotatably mounted via a rotating shaft. Two racks 10 are arranged symmetrically on both sides of the drive gear 9, and the two racks 10 are fixedly connected to two moving blocks 11 respectively.

[0024] A fixed plate 17 is fixedly installed at the bottom of the mobile frame 13. An electric telescopic rod 18 is fixedly installed on the side wall of the fixed plate 17. The output end of the electric telescopic rod 18 is fixedly connected to the lifting device 20. The telescopic adjustment of the electric telescopic rod 18 adjusts the position of the lifting device 20 within the limit frame 19.

[0025] A servo motor 4 that drives the bidirectional lead screw 3 to rotate is fixedly installed on the side wall of the traction plate 1. The bidirectional lead screw 3 is driven to rotate through the output end of the servo motor 4 to adjust the distance between the two movable blocks 5. A drive motor 16 that drives the drive gear 9 to rotate is fixedly installed at the bottom of the mounting box 8.

[0026] It should be noted that the specific model and specifications of the servo motor 4 and drive motor 16 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0027] The functional principle of this utility model can be explained through the following operation methods:

[0028] In use, the output of the servo motor 4 drives the bidirectional lead screw 3 to rotate, and the distance between the two movable blocks 5 is adjusted, so that the two second sliding frames 14 drive the limit frame 19 to move, and the lateral length between the spreaders 20 is adjusted. In conjunction with the output of the drive motor 16, the drive gear 9 is driven to rotate, so that the drive gear 9 synchronously drives the two meshing racks 10 to move, and the distance between the two movable blocks 11 is adjusted, and the lateral length between the spreaders 20 is adjusted, so as to lift containers of different sizes.

[0029] By extending and retracting the electric telescopic rod 18, the position of the spreader 20 within the limit frame 19 is adjusted so that the spreader 20 is positioned directly above the corner pieces at the top of the container, and the four twisted corner pieces are lifted.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A container spreader, comprising a towing plate (1), characterized in that, A fixed column (2) is fixedly installed at the bottom of the traction plate (1). A mounting box (8) with open ends is fixedly installed at the bottom of the fixed column (2). Two symmetrically arranged moving blocks (11) are slidably arranged inside the mounting box (8). A first sliding frame (12) is fixedly installed at the end of each of the two moving blocks (11). Two symmetrically arranged moving frames (13) are slidably arranged inside each of the two first sliding frames (12). Limit frames (19) are fixedly installed at the bottom of each of the four moving frames (13). A lifting device (20) for lifting the container is slidably arranged inside each of the four limit frames (19).

2. The container spreader according to claim 1, characterized in that, A bidirectional lead screw (3) is rotatably installed inside the traction plate (1), and both ends of the bidirectional lead screw (3) are fitted with movable blocks (5) through threads. Both movable blocks (5) are slidably installed inside the traction plate (1), and both movable blocks (5) are fixedly installed with connecting rods (7) at their bottom ends. The two connecting rods (7) are located on both sides of the fixed column (2).

3. A container spreader according to claim 2, characterized in that, The traction plate (1) has two symmetrically arranged limiting grooves (6), and the two movable blocks (5) are slidably arranged in the limiting grooves (6). The bottom ends of the two connecting rods (7) are fixedly installed with second sliding frames (14). The second sliding frames (14) have two symmetrically arranged sliding rods (15) slidably arranged in them. The sliding rods (15) and the moving frame (13) are fixedly connected.

4. A container spreader according to claim 3, characterized in that, The mounting box (8) is rotatably mounted with a drive gear (9) via a rotating shaft. Two racks (10) are arranged symmetrically on both sides of the drive gear (9), and the two racks (10) are fixedly connected to two moving blocks (11) respectively.

5. A container spreader according to claim 4, characterized in that, The bottom of the mobile frame (13) is fixedly installed with a fixed plate (17), and an electric telescopic rod (18) is fixedly installed on the side wall of the fixed plate (17). The output end of the electric telescopic rod (18) is fixedly connected to the lifting device (20).

6. A container spreader according to claim 5, characterized in that, The traction plate (1) is fixedly mounted with a servo motor (4) that drives the bidirectional lead screw (3) to rotate, and the mounting box (8) is fixedly mounted with a drive motor (16) that drives the drive gear (9) to rotate.

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