Low-clearance hoisting device, containerized unit and hoisting method thereof

Abstract

The invention relates to a low-clearance hoisting device, a containerized unit and a hoisting method of the containerized unit, which can be used for hoisting the containerized unit. A low-clearance lifting device comprises a long beam and four long beam lifting hooks, the two ends of the long beam are each provided with a chain adjuster, the chain adjusters are connected with one ends of chains, and the other ends of the chains are connected with the lifting hooks. The four long beam lifting hooks are evenly distributed at the two ends of the long beam, and the long beam lifting hooks are detachably connected with the long beam. Compared with the prior art, the low-clearance hoisting method and the low-clearance hoisting device have the technical effects that the problem of back-to-back stacking hoisting of the containerized units is solved by connecting the containerized units in advance and manually operating the long beams to be in lap joint with the long beam lifting hooks.

Description

Technical Field

[0001] The present invention relates to a low-headroom lifting device, a containerized unit, and a lifting method thereof, which can be used for lifting containerized units, and is particularly suitable for lifting containerized units that are densely stored in a "back-to-back" stacking manner, and belongs to the field of lifting containerized units for high-density storage on ships. Background Art

[0002] When storing containerized units, sufficient lifting clearance is required between the two containers. However, due to limited space within a ship's hold, this storage method takes up space within the hold and reduces the containerized unit's load capacity. To improve the storage volume ratio, the lifting clearance should be minimized. This reduces the distance between the two containers during containerized storage, significantly saving hold space and increasing load capacity. How containerized units are lifted is crucial to achieving "back-to-back" stacking and storage.

[0003] In order to increase the cargo loading capacity, it is necessary to carry out research on lifting technology under this "back-to-back" high-density storage mode to solve the technical difficulties of operational accessibility. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to design a low-headroom lifting method and device to solve the technical difficulties raised by the above technical background.

[0005] The technical solution of the present invention is specifically as follows: A low-headroom lifting device comprises a long beam and four long beam hooks. Both ends of the long beam are provided with a chain adjuster, the chain adjuster is connected to one end of a chain, and the other end of the chain is connected to the hook.

[0006] Four long beam hooks are evenly distributed at two ends of the long beam, and the long beam hooks are detachably connected to the long beam.

[0007] The long beam is hingedly connected to the upper end of the chain adjuster.

[0008] Each end of the long beam is provided with a hitch pin.

[0009] A lifting containerized unit includes a containerized unit and two sets of the above-mentioned low-headroom lifting devices, wherein a long beam is arranged along the width of the containerized unit and is located above the containerized unit, four hooks are connected to the hanging ring below the containerized unit, and eight long beam hooks are overlapped at the ends of the two long beams and are located on the inner side of the pulling and hanging pins.

[0010] A lifting method comprises the following steps: S1. Calculation: Calculate the number n of containerized units to be lifted, and prepare 2n of the aforementioned low-headroom lifting devices, so that one containerized unit matches two sets of the aforementioned low-headroom lifting devices; S2. Installation: Connect the four hooks to the hanging rings at the bottom of the containerized unit. Adjust the chain length using the chain adjuster according to the height between the hanging rings at the bottom of the containerized unit and its top, so that the distance between the long beam and the top of the containerized unit meets the lifting standard. S3. Prepare for lifting: Then manually connect the long beam to the long beam hooks so that all eight long beam hooks are located on the inner side of the pull-hook pins. Close the pull-hook pins to securely lock the long beam. S4. Hoisting: Connect the crane's spreader to the long beam hook, use the crane to move the containerized unit from the original location to the destination, complete the stacking of the containerized unit, and unhook the crane's spreader from the long beam hook; The stacking of the containerized unit in this step involves two types of handling: carrying the target containerized unit into a narrow space, where the target containerized unit becomes a completed containerized unit; and, as shown in the figure, carrying the target containerized unit out of the narrow space, where the target containerized unit becomes a completed containerized unit. S5. Disassembly A: Open the pull pin to unlock and make the long beam leave the eight long beam hooks; S6. Disassembly B: Remove the four hooks from the hanging rings at the bottom of the containerized unit.

[0011] Compared with the prior art, the technical effect of the present invention is that the present invention provides a low-headroom lifting method and device, which solves the problem of "back-to-back" stacking and lifting of containerized units by pre-connecting with the containerized unit and manually operating the long beam to overlap the long beam hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the present invention.

[0013] Figure 2 It is a three-dimensional schematic diagram of the present invention.

[0014] Figure 3 It is a cross-sectional diagram of the hammer rod.

[0015] Figure 4 Schematic diagram of the cross section of the hammer rod in the assembled state (I).

[0016] Figure 5 This is a schematic cross-sectional view of the hammer rod in the assembled state (II). DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0018] like Figure 1-2A low-headroom lifting device includes a long beam 3 and four long beam hooks 1. A chain adjuster 4 is provided at both ends of the long beam 3. The chain adjuster 4 is connected to one end of a chain 5, and the other end of the chain 5 is connected to a hook 6.

[0019] Four long beam hooks 1 are evenly distributed at two ends of the long beam 3 , and the long beam hooks 1 are detachably connected to the long beam 3 .

[0020] The long beam 3 is hingedly connected to the upper end of the chain adjuster 4 .

[0021] To prevent the long beam hook 1 from slipping off the end of the long beam 3, a hook pin 2 is installed at each end of the long beam 3. The hook pin comprises a hook handle, a hook pin shaft, a hook pin sleeve, and a spring. The hook handle can be operated to extend or retract the hook pin shaft. The hook pin is installed on one side of the outer long beam hook. The extended hook pin shaft can be inserted into the holes at each end of the long beam, safely locking the long beam during lifting.

[0022] like Figure 3-5 A lifting containerized unit includes a containerized unit (similar to a container) 8 and two sets of the above-mentioned low-headroom lifting devices 7, wherein the long beam 3 is arranged along the width of the containerized unit 8 and is located above the containerized unit 8, four hooks 6 are connected to the hanging ring 88 below the containerized unit 8, and eight long beam hooks 1 are overlapped at the ends of the two long beams 3 and are located on the inner side of the pulling pin 2.

[0023] Its working principle is: like Figure 1-5 , a lifting method, comprising the following steps: S1. Calculation: Calculate the number n of containerized units 8 to be lifted, and prepare 2n of the aforementioned low-headroom lifting devices, so that one containerized unit 8 is matched with two sets of the aforementioned low-headroom lifting devices; S2. Installation: Connect the four hooks 6 to the hanging rings 88 below the containerized unit 8. Adjust the length of the chain 5 using the chain adjuster 4 according to the height between the hanging ring 88 below the containerized unit 8 and its top, so that the distance between the long beam 3 and the top of the containerized unit 8 meets the lifting standard. S3, prepare for lifting: Then manually operate the long beam 3 to overlap the long beam hook 1, so that the eight long beam hooks 1 are all located on the inner side of the pull-hanging pin 2, and close the pull-hanging pin 2 to safely lock the long beam; S4. Lifting: Connect the crane's spreader 90 to the long beam hook 1, and use the crane to move the containerized unit 8 from the original location to the destination location. After stacking the containerized unit, the crane's spreader 90 is unhooked from the long beam hook 1. The stacking of the containerized unit in this step includes two types of handling: Figure 4, the target containerized unit 81 is transported to a narrow space (such as a cabin), and the target containerized unit 81 becomes the containerized unit 82 that has been operated; Figure 5 , moving the target containerized unit 82 from the narrow space (such as the cabin), and the target containerized unit 81 becomes the operated containerized unit 81; S5. Disassembly A: Open the hook pin 2 to unlock it, so that the long beam 3 leaves the eight long beam hooks 1; S6 , disassembly B: remove the four hooks 6 from the hanging rings 88 below the containerized unit 8 .

[0024] Features of this application: S1. The shape of the long beam hook is similar to that of a hook. A group of four long beam hooks provide support and horizontal safety constraints for the long beam of the lifting device. It is one of the main load-bearing structures of the lifting device.

[0025] S2. The hook pin consists of a handle, a pin shaft, a sleeve, and a spring. Operating the handle extends and retracts the pin shaft. The hook pin is mounted on one side of the outer beam hook. The extended pin shaft inserts into holes at either end of the beam, safely locking the beam during lifting.

[0026] S3. The long beam can be connected to the long beam hook to lift the containerized unit.

[0027] S4. The chain adjuster can adjust the length of the chain to adapt to containerized units of different heights. The lifting device is connected to the containerized unit lifting ring through the hook for lifting.

[0028] S5. The lifting device can be used to stack the containerized units "back to back" to achieve dense storage. When dense storage is required, the space is difficult to reach, and the lifting height is low, the lifting device can be placed on the containerized unit in advance to lift the containerized unit.

[0029] Let me elaborate on this point: In the prior art, because the crane sling needs to be connected to the hanging ring 88 below the containerized unit 8, the sling has a large profile and may interfere with the adjacent containerized unit 8, so that the distance between two adjacent containerized units 8 must be large enough to ensure safe lifting.

[0030] In the present application, a low-headroom lifting device (actually an auxiliary lifting device) is installed before lifting, and the connection position of the containerized unit 8 (the connection position with the lifting device) is changed from the bottom of the containerized unit 8 (that is, the hanging ring 88) to the top of the containerized unit 8 (that is, the long beam hook 1). Therefore, a lifting device with such a large profile is no longer needed, and there is no need to operate on the side of the containerized unit 8, so dense storage can be achieved.

[0031] For other contents, please refer to the prior art.

[0032] The above description is only the preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A low-headroom lifting device comprising a long beam (3) and four long beam hooks (1), characterized in that: A chain adjuster (4) is provided at each end of the long beam (3), the chain adjuster (4) is connected to one end of a chain (5), and the other end of the chain (5) is connected to a hook (6).

2. The low-headroom lifting device according to claim 1, characterized in that: Four long beam hooks (1) are evenly distributed at two ends of the long beam (3), and the long beam hooks (1) are detachably connected to the long beam (3).

3. The low-headroom lifting device according to claim 2, characterized in that: The long beam (3) is hingedly connected to the upper end of the chain adjuster (4).

4. The low-headroom lifting device according to claim 3, characterized in that: Each end of the long beam (3) is provided with a hook pin (2).

5. A lifting containerized unit, characterized by: It comprises a containerized unit (8) and two sets of low-headroom lifting devices (7) as described in claim 1, wherein the long beam (3) is arranged along the width of the containerized unit (8) and is located above the containerized unit (8), four hooks (6) are connected to the hanging ring (88) below the containerized unit (8), and eight long beam hooks (1) are overlapped at the ends of the two long beams (3) and are located on the inner side of the pull-hanging pin (2).

6. A lifting method comprising the following steps: S1. Calculation: Calculate the number n of containerized units (8) to be lifted and prepare The number of the low-headroom lifting devices as claimed in claim 1 is 2n, so that one containerized unit (8) is matched with two sets of the above-mentioned low-headroom lifting devices; S2. Installation: Four hooks (6) are connected to the hanging ring (88) below the containerized unit (8). According to the height of the hanging ring (88) below the containerized unit (8) from its top, the length of the chain (5) is adjusted by the chain adjuster (4) so ​​that the distance between the long beam (3) and the top of the containerized unit (8) meets the lifting standard; S3, prepare for lifting: then manually operate the long beam (3) to connect it to the long beam hook (1), so that the eight long beam hooks (1) are all located on the inner side of the pull-hanging pin (2), and close the pull-hanging pin (2) to safely lock the long beam; S4, lifting: connecting the crane's sling (90) to the long beam hook (1), transporting the containerized unit (8) from the original location to the destination location by the crane, completing the stacking of the containerized unit, and unhooking the crane's sling (90) from the long beam hook (1); The stacking of the containerized unit in this step includes two types of transport: transporting the target containerized unit (81) to a narrow space, where the target containerized unit (81) becomes a finished containerized unit (82); and moving the target containerized unit (82) out of the narrow space, where the target containerized unit (81) becomes a finished containerized unit (81). S5. Disassembly A: Open the hook pin (2) to unlock the long beam (3) and remove it from the eight long beam hooks (1); S6. Disassembly B: Remove the four hooks (6) from the hanging ring (88) below the containerized unit (8).

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