Container spreader

Abstract

This application relates to the technical field of container spreaders, and in particular to a container spreader. A sleeve is fitted around the top of the hook, and a sealing plate is rotatably connected to the inner wall of the sleeve, sealing it in a sealing fit. A partition is provided on the sealing plate, and there is unidirectional transmission between the sealing plate and the hook. An oil cylinder, containing hydraulic oil, is located on one side of the sleeve. A pusher block, protruding from the side beam, pushes and extracts the hydraulic oil. Each push causes the sealing plate and hook to rotate 90°. This solution, by setting a sleeve on the outside of the hook and a sealing plate inside it, with a partition on the sealing plate and the oil cylinder on the outside, allows the pusher block to move and push hydraulic oil into the sealing cavity of the partition, thereby enabling the hook to reciprocate within a 90° range, achieving hook steering adjustment and convenient hook control.

Description

Technical Field

[0001] This application relates to the technical field of container spreaders, and in particular to a container spreader. Background Technology

[0002] As a core piece of equipment for the rapid lifting and transfer of containers in ports, logistics parks, and other similar settings, the structural design of container spreaders directly affects lifting efficiency and operational safety. Currently, existing container spreaders generally connect to the container during lifting operations through a mechanical locking structure between a rigid lock head and the container's top corner fittings. This involves inserting a telescopic lock head on the spreader into a locking hole at the top corner of the container, and then mechanically rotating and locking the lock head to secure the spreader and container together.

[0003] However, this traditional rigid locking structure has many unavoidable problems in practical use: First, the contact area between the lock head and the corner piece is prone to severe wear due to uneven force. Containers may deform during transportation, and the spreader often needs to withstand the container's weight, inertia, and horizontal swaying impact during lifting. The metal contact surface between the rigid lock head and the corner piece will develop scratches and dents due to frequent friction and collisions, which may lead to decreased locking accuracy or even lock head jamming after long-term use. Therefore, to solve the above problems, this application provides a container spreader. Utility Model Content

[0004] To address the aforementioned problems, this application provides a container spreader.

[0005] This application provides a container spreader, in which two crossbeams are welded to side beams at both ends to form a spreader frame, and hooks are provided below the ends of the two side beams. The hooks are characterized in that: a sleeve is fitted on the top of the hooks, and a sealing plate is rotatably connected to the inside of the sleeve and seals against its inner wall. A partition is provided on the sealing plate, and there is unidirectional transmission between the sealing plate and the hooks.

[0006] One side of the sleeve is provided with an oil cylinder connected to it. The oil cylinder contains hydraulic oil. Inside the oil cylinder, a pusher block is slidably embedded to push and draw the hydraulic oil. The pusher block is set out to protrude from the side beam. Each time the pusher block pushes, the sealing plate and the hook rotate 90°.

[0007] By installing a sleeve on the outside of the hook and a sealing plate inside it for sealing, and then installing a partition plate on the sealing plate in conjunction with an oil cylinder on the outside, hydraulic oil is pushed into the sealing cavity of the partition plate by a pusher block, thereby enabling the hook to reciprocate within a 90° range, thus achieving the hook's direction adjustment and convenient control of the hook.

[0008] Preferably, the top of the hook is rotatably connected between a ratchet structure and a sealing plate.

[0009] Preferably, a pusher block is slidably embedded inside the oil cylinder, and the pusher block is elastically connected to the oil cylinder by a spring.

[0010] Preferably, the top end of the oil cylinder is fixedly connected to an oil delivery pipe that communicates with the top end of the inner sleeve.

[0011] Preferably, the height of the push block is higher than the bottom end of the hook.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] By installing a sleeve on the outside of the hook and a sealing plate inside it for sealing, and then installing a partition plate on the sealing plate in conjunction with an oil cylinder on the outside, hydraulic oil is pushed into the sealing cavity of the partition plate by the movement of a pusher block, thereby enabling the hook to reciprocate within a 180° range, thus realizing the steering adjustment of the hook and achieving convenient control of the hook. Attached Figure Description

[0014] Figure 1 It is the isometric drawing in Embodiment 1 of this application;

[0015] Figure 2 This is the bottom-view isometric drawing from Embodiment 1 of this application;

[0016] Figure 3 This is a structural diagram of the hook in Embodiment 1 of this application;

[0017] Figure 4 This is a partial sectional view of the hook in Embodiment 1 of this application.

[0018] Explanation of reference numerals in the attached drawings: 1. Crossbeam; 2. Side beam; 3. Sleeve; 4. Hook; 41. Ratchet structure; 42. Sealing plate; 43. Partition; 5. Push block; 6. Oil cylinder; 7. Oil pipe; 8. Spring. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0020] Example 1:

[0021] A container spreader, as described in the reference Figure 1 - Figure 4 Two horizontal beams 1 are welded to the two ends of side beams 2 to form a lifting frame. A hook 4 is provided below the ends of the two side beams 2. A sleeve 3 is sleeved on the top of the hook 4. A sealing plate 42 is rotatably connected to the inside of the sleeve 3 and seals with its inner wall. A partition 43 is provided on the sealing plate 42. The sealing plate 42 and the hook 4 have one-way transmission.

[0022] A sleeve 3 is provided with an oil cylinder 6 connected to it. The oil cylinder 6 contains hydraulic oil. Inside the oil cylinder 6, a pusher block 5 is slidably embedded to push and draw the hydraulic oil. The pusher block 5 is set to protrude from the side beam 2. Each time the pusher block 5 pushes, the sealing plate 42 and the hook 4 rotate 90°.

[0023] By setting a sleeve 3 on the outside of the hook 4 and a sealing plate 42 that seals with it inside, and then setting a partition 43 on the sealing plate 42 to cooperate with the oil cylinder 6 set on the outside, the hydraulic oil is pushed into the sealing cavity of the partition 43 by the push block 5, thereby enabling the hook 4 to reciprocate within a 90° range, thereby realizing the steering adjustment of the hook 4 and thus achieving convenient control of the hook 4.

[0024] The top of the hook 4 is rotatably connected to the sealing plate 42 via a ratchet structure 41. The ratchet structure 41 restricts the rotation of the sealing plate 42 to only drive the hook 4 below in one direction. When the sealing plate 42 is reset, the position of the hook 4 is not driven, so that the hook 4 can be easily locked and unhooked each time it is lifted and unloaded.

[0025] A pusher block 5 is slidably embedded inside the oil cylinder 6, and the pusher block 5 is elastically connected to the oil cylinder 6 through a spring 8.

[0026] The top of the oil cylinder 6 is fixedly connected to an oil delivery pipe 7 that communicates with the top of the inside of the sleeve 3.

[0027] The push block 5 is higher than the bottom of the hook 4. When the crane descends, the hook 4 is inserted into the lifting holes of each container. At this time, the push block 5 is not yet in contact with the container. When the push block 5 contacts the container, it pushes the hydraulic oil inside the oil cylinder 6 through the oil pipe 7 into the sleeve 3. The hydraulic oil fills the oil cavity between the sealing plate 42 and the partition 43, causing the hook 4 to rotate 90°, thus locking it. During lifting, because the push block 5 is low, after detaching from the container, it resets under the action of the spring 8. At this time, the oil cylinder 6 draws hydraulic oil from the oil cavity of the sleeve 3, thus resetting the sealing plate 42. When the container is lifted into place, the push block 5 contacts the container again, pushing it a second time. This second push resets the hook 4 to its initial position, allowing it to disengage.

[0028] The foregoing description of an exemplary embodiment of a container spreader provided by this disclosure refers to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A container spreader, wherein two crossbeams (1) are welded to side beams (2) at both ends to form a spreader frame, and hooks (4) are provided below the ends of both side beams (2), characterized in that: The top of the hook (4) is fitted with a sleeve (3), and the inner side of the sleeve (3) is rotatably connected to a sealing plate (42) that seals against its inner wall. A partition (43) is provided on the sealing plate (42), and there is one-way transmission between the sealing plate (42) and the hook (4). The sleeve (3) is provided with an oil cylinder (6) connected to it on one side. The oil cylinder (6) contains hydraulic oil. The push block (5) is slidably embedded inside the oil cylinder (6) to push and extract the hydraulic oil. The push block (5) is set to protrude from the side beam (2). Each time the push block (5) pushes, the sealing plate (42) along with the hook (4) rotates 90°.

2. The container spreader according to claim 1, characterized in that: The top of the hook (4) is rotatably connected between the ratchet structure (41) and the sealing plate (42).

3. The container spreader according to claim 2, characterized in that: The oil cylinder (6) has a pusher block (5) slidably embedded inside it, and the pusher block (5) is elastically connected to the oil cylinder (6) by a spring (8).

4. The container spreader according to claim 3, characterized in that: The top of the oil cylinder (6) is fixedly connected to an oil delivery pipe (7) that communicates with the top of the inside of the sleeve (3).

5. The container spreader according to claim 1, characterized in that: The height of the push block (5) is higher than the bottom of the hook (4).

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