Anti-falling container double-box lifting appliance

Abstract

The utility model provides an anti-falling double-container lifting appliance. The anti-falling double-container lifting appliance comprises a main beam; the telescopic beam assembly is telescopically arranged in the main beam in the length direction of the main beam; the first hoisting assemblies are mounted at the two ends of the telescopic beam assembly; the double-box moving mechanism is mounted in the middle of the main beam; the pair of first limiting detection switches are mounted at the central axis position of the bottom of the main beam; and the pair of second limiting detection switches are respectively arranged at the positions of the two sides of the central axis of the bottom of the main beam. According to the anti-falling double-container lifting appliance provided by the embodiment of the utility model, the container can be reliably loaded and unloaded, so that the accident of falling of the container caused by failure or misoperation of the lifting appliance on detection of the container is avoided, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of container cranes, in particular to a double-box container hoisting device that prevents falling. Background Art

[0002] In the port container loading and unloading operations, container spreaders are one of the most frequently used tools. Among them, the container double-box spreader is a special lock for loading and unloading containers. The spreader is connected to the top corner accessories of the container through four-corner twist locks. The driver operates or automatically controls the opening and closing of the twist locks to load and unload containers. However, during the operation of the container double-box spreader, if it cannot correctly identify the number of containers to be lifted, for example, lifting two 20-foot containers in a 40-foot single container state, it is easy to cause serious safety accidents such as the spreader's lock pin breaking and the container falling, causing economic losses in container port operations. Utility Model Content

[0003] In view of this, the utility model provides a fall-proof container double-box lifting device, which can reliably load and unload containers and prevent the containers from falling.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The anti-falling container double-box lifting device according to the embodiment of the utility model comprises:

[0006] Main beam;

[0007] A telescopic beam assembly, wherein the telescopic beam assembly is telescopically arranged inside the main beam along the length direction of the main beam, and two ends of the telescopic beam assembly are respectively arranged outside two ends of the main beam;

[0008] A first lifting assembly, the first lifting assembly is installed at both ends of the telescopic beam assembly, and the first lifting assembly is used to lift the outer end of the container;

[0009] A double-box moving mechanism, which is installed in the middle of the main beam and is used to movably lift the inner end of the container;

[0010] A pair of first limit detection switches, wherein the pair of first limit detection switches are installed at the center axis position of the bottom of the main beam, and whether the first limit detection switches are triggered is used to determine whether the hoisting device is hoisting a single box or a double box;

[0011] A pair of second limit detection switches are respectively installed at the positions on both sides of the central axis of the bottom of the main beam, and the second limit detection switches are used to detect whether the distance between the upper surface of the container lifted by the spreader and the second limit detection switch is greater than a predetermined distance, so as to determine whether the spreader lifts double boxes / single box in the single box lifting state.

[0012] Furthermore, the inner hollow of the main beam is formed into a frame structure.

[0013] Furthermore, the telescopic beam assembly comprises:

[0014] A pair of telescopic beams, wherein the inner ends of the pair of telescopic beams are arranged inside the frame, and the two outer ends of the pair of telescopic beams are movably extended out of the two ends of the frame.

[0015] Furthermore, the first lifting assembly includes four first rotary lock mechanisms, and the four first rotary lock mechanisms are respectively installed at four corners of two outer ends of a pair of telescopic beams.

[0016] Furthermore, the double-box moving mechanism comprises:

[0017] A driving mechanism, the driving mechanism being mounted in the middle of the frame;

[0018] Four mobile racks, each of which is disposed on both sides of the main beam in a length direction, and the four mobile racks are connected to the driving mechanism so that a pair of the mobile racks on one side can be separated / closed relative to the central axis of the frame;

[0019] Four second rotary lock mechanisms are respectively mounted on the four movable frames so as to be movable up and down.

[0020] Furthermore, the second rotary lock mechanism is installed on the outer side of the moving frame.

[0021] Furthermore, a pair of the first limit detection switches are installed on both side edges of the central axis of the bottom of the frame.

[0022] Furthermore, connecting beams are respectively provided at the positions on both sides of the central axis of the bottom of the frame, and the two ends of the two connecting beams are respectively connected to the two sides.

[0023] A pair of the second limit detection switches are respectively installed on the connecting beam.

[0024] Furthermore, the telescopic beam assembly also includes a guide assembly, and the guide assembly is installed on two outer ends of a pair of telescopic beams.

[0025] Furthermore, the guide assembly includes four guide plates, and the four guide plates are respectively installed at four corners of the two outer ends of a pair of telescopic beams.

[0026] The above technical solution of the utility model has at least one of the following beneficial effects:

[0027] According to the embodiment of the utility model, the anti-fall container double-box lifting device can effectively determine the number of containers lifted by the lifting device and reliably lift them by setting a first limit detection switch at the position of the central axis of the bottom of the main beam. In addition, a second limit detection switch is set at the positions on both sides of the central axis of the bottom of the main beam. On the one hand, it can avoid the problem of the first limit detection switch being ineffective due to the influence of a complex working environment. On the other hand, it can further accurately determine whether a double box is lifted in a single-box grabbing state by detecting the change in the distance between the upper surface of the inner side end of the container and the bottom of the main beam, thereby avoiding the occurrence of double boxes falling and improving the reliability and safety of container loading and unloading operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a front view of the anti-falling container double-box spreader according to an embodiment of the utility model;

[0029] Figure 2 A top view of a double-box container sling for preventing a container from falling according to an embodiment of the utility model;

[0030] Figure 3 The present invention is a schematic diagram of the detection of the second limit detection switch in the anti-fall container double-box spreader according to an embodiment of the present invention.

[0031] Figure numerals: 100. Main beam; 200. Telescopic beam assembly; 210. Telescopic beam; 220. Guide assembly; 300. First lifting assembly; 310. First rotary lock mechanism; 400. Double-box moving mechanism; 410. Driving mechanism; 420. Moving frame; 430. Second rotary lock mechanism; 500. First limit detection switch; 600. Second limit detection switch; 700. Container. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0033] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0034] The following first describes in detail the anti-falling container twin-box spreader according to the embodiment of the utility model in conjunction with the accompanying drawings.

[0035] According to the anti-falling container double box lifting device of the utility model, Figure 1 and Figure 2 As shown, it may include: a main beam 100 , a telescopic beam assembly 200 , a first lifting assembly 300 , a double-box moving mechanism 400 , a pair of first limit detection switches 500 , and a pair of second limit detection switches 600 .

[0036] The telescopic beam assembly 200 is telescopically arranged inside the main beam 100 along the length direction of the main beam 100 , and two ends of the telescopic beam assembly 200 are respectively arranged outside the two ends of the main beam 100 .

[0037] The first lifting assembly 300 is installed at both ends of the telescopic beam assembly 200, and the first lifting assembly 300 is used to lift the outer end of the container. For example, when performing a single container operation, the four corners of a single 20-foot, 40-foot or 45-foot container are lifted by the first lifting assembly 300.

[0038] The twin-container moving mechanism 400 is installed in the middle of the main beam 100, and is used to movably lift the inner side end of the container. For example, when performing twin-container operation, the four corners of the outer periphery of two 20-foot containers are lifted by the first lifting assembly 300, and the four angles of the inner side ends of the two 20-foot containers are movably lifted by the twin-container moving mechanism 400, thereby realizing accurate and reliable lifting of the twin containers.

[0039] A pair of first limit detection switches 500 are installed at the center axis position of the bottom of the main beam 100. Whether the first limit detection switch 500 is triggered is used to determine whether the hoisting device is hoisting a single box or a double box.

[0040] A pair of second limit detection switches 600 are respectively installed at the positions on both sides of the central axis of the bottom of the main beam 100. The second limit detection switch 600 is used to detect whether the distance between the upper surface of the container lifted by the sling and the second limit detection switch 600 is greater than a predetermined distance, so as to determine whether the sling lifts double boxes / single box in the single box lifting state.

[0041] Specifically, the anti-fall container twin-box lifting device according to the embodiment of the utility model is provided with a movable and retractable telescopic beam assembly 200 inside 100, and the two ends of the telescopic beam assembly 200 extend out of the two ends of the main beam 100, and the first lifting assembly 300 is respectively connected to the two ends of the telescopic beam assembly 200, and the two ends of the telescopic beam assembly 200 are adjusted to grab and lift the corners of a single container. A twin-box moving mechanism 400 is installed in the middle of the main beam 100, so that when lifting two containers, the four corners of the outer ends of the two containers are lifted by the first lifting assembly 300, and the twin-box moving mechanism 400 is movable and adjustable to lift the four corners of the inner ends of the two containers, thereby completing the lifting of the twin containers.

[0042] In addition, a pair of first limit detection switches 500 are installed at the center axis position of the bottom of the main beam 100 to detect whether the bottom of the center axis position of the bottom of the main beam 100 is blocked. If the bottom of the center axis position of the bottom of the main beam 100 is blocked, the first limit detection switch 500 is triggered, which means that it is determined that a single container is hoisted under the sling, and the double-box moving mechanism 400 is controlled not to work. If it is not triggered, it means that it is determined that a double container is hoisted under the sling, and the double-box moving mechanism 400 is controlled to work.

[0043] In some embodiments, the first limit detection switch 500 may fail or malfunction due to the relatively harsh working environment of the spreader, including the spreader being easily impacted, the mounting bracket vibrating and shifting, the photoelectric switch surface being contaminated, the special box type or the container being damaged, and other factors. Figure 3 As shown, a pair of second limit detection switches 600 can also be installed at the positions on both sides of the central axis of the bottom of the main beam 100 to avoid lifting double containers in the single-container lifting state. The second limit detection switch 600 is used to detect whether the distance between the upper surface of the inner side end of the container 700 lifted by the lifting device and the second limit detection switch 600 is greater than a predetermined distance. If it is greater than the predetermined distance, the second limit detection switch 600 is triggered, that is, it is determined that the upper surface of the inner side end of the container 700 moves downward relative to the second limit detection switch 600 (such as Figure 3 As shown in a pair of solid rectangular frames, the double-box moving mechanism 400 does not work in the single-box grabbing state, causing the inner end of the double box to collapse when it is lifted off the ground). This indicates that the sling has lifted the double box in the single-box lifting state, so the sling is promptly controlled to stop working and make adjustments.

[0044] That is to say, the anti-falling container double-box lifter according to the embodiment of the utility model can accurately determine the number of lifted containers, and even when the first limit detection switch fails, it can avoid falling accidents caused by lifting two containers in a single-box state, thereby improving the reliability and safety of container operations.

[0045] In some embodiments, the main beam 100 is hollow inside and is formed as a frame structure.

[0046] On the one hand, it can effectively reduce the weight of the main beam 100 and reduce the production cost, and on the other hand, it is convenient to detachably install other components on the main beam 100.

[0047] In some embodiments, Figure 1 and Figure 2 As shown, the telescopic beam assembly 200 may include: a pair of telescopic beams 210 .

[0048] The inner ends of the pair of telescopic beams 210 are arranged inside the frame, and the two outer ends of the pair of telescopic beams 210 are movably extended out of the two ends of the frame.

[0049] That is, a pair of telescopic beams 210 are arranged at both ends of the length direction of the frame of the main beam 100, and the length of the telescopic beams 210 is adjusted to adapt to the length of the grabbed container. In addition, when the spreader is not working, the telescopic beams 210 are adjusted to be in a retracted state to facilitate single-container operation, such as grabbing a single 20-foot container.

[0050] It should be noted that a pair of telescopic beams 210 are provided at both ends of the main beam 100 frame and are driven to be adjustable and telescopic, which is a technical means well known to those skilled in the art and will not be elaborated herein.

[0051] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the first lifting assembly 300 includes four first rotary lock mechanisms 310 , and the four first rotary lock mechanisms 310 are respectively installed at four corners of the two outer ends of a pair of telescopic beams 210 .

[0052] That is to say, by respectively arranging the first rotary lock mechanisms 310 at the four corners of the two outer ends of the pair of telescopic beams 210 to lift the corresponding corners of the top surface of the container, it is reliable and stable.

[0053] In some embodiments, Figure 1 and Figure 2 As shown, the dual-box moving mechanism 400 may include: a driving mechanism 410 , four moving frames 420 , and four second rotary lock mechanisms 430 .

[0054] The driving mechanism 410 is installed in the middle of the frame.

[0055] The four moving frames 420 are respectively arranged on both sides of the main beam 100 in the length direction, and the four moving frames 420 are connected to the driving mechanism 410, so that a pair of moving frames 420 on a single side can be separated / closed relative to the central axis position of the frame.

[0056] The four second rotary lock mechanisms 430 are respectively installed on the four moving frames 430 so as to be movable up and down.

[0057] That is to say, the double-box moving mechanism 400 drives the four moving frames 420 to separate / close at the central axis position of the frame on both sides of the length direction of the main beam 100 frame relative to the frame through the driving mechanism 410, and then adjusts the four second rotary lock mechanisms 430 to hang the four corners of the inner end of the double box, and the second rotary lock mechanism 430 can further move up and down on the moving frame 430, so that the second rotary lock mechanism 430 can better adapt to the operating requirements of different working conditions.

[0058] It should be noted that the specific scheme of the driving mechanism 410 of the double-box moving mechanism 400 driving the moving frame 420 to separate / close relative to the central axis position of the frame, and the second rotary lock mechanism 430 moving up and down on the moving frame 430 can be easily deduced by technical personnel in this field and will not be elaborated here.

[0059] In some embodiments, Figure 2 As shown, the second rotary lock mechanism 430 is installed on the outside of the moving frame 420.

[0060] As a result, the second rotary lock mechanism 430 is not likely to interfere with the main beam 100 structure when moving up and down, and is easy to disassemble and maintain.

[0061] In some embodiments, Figure 2 As shown, a pair of first limit detection switches 500 (not shown) can be installed on both sides of the central axis of the bottom of the frame.

[0062] This makes it easy to inspect the container at the bottom of the spreader, and it is convenient for installation and maintenance.

[0063] In some embodiments, Figure 2 As shown, connecting beams (not shown) are respectively provided at both sides of the central axis of the bottom of the frame, and the two ends of the two connecting beams are respectively connected to the two side edges.

[0064] A pair of second limit detection switches 600 (not shown) are respectively installed on the connecting beams.

[0065] Therefore, it is convenient to accurately detect whether the spreader is in a state of lifting two containers in a single-box grabbing state, and installation and maintenance are convenient.

[0066] In some embodiments, Figure 2 As shown, the telescopic beam assembly 200 also includes a guide assembly 220, which is installed on the two outer ends of a pair of telescopic beams 210. For example, the guide assembly 220 includes four guide plates, and the four guide plates are respectively installed at the four corners of the two outer ends of the pair of telescopic beams 210.

[0067] This makes it easier for the spreader to align and grab the container, thereby improving the loading and unloading efficiency of the container.

[0068] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fall-proof container double-box lifting device, characterized in that: include: Main beam; A telescopic beam assembly, wherein the telescopic beam assembly is telescopically arranged inside the main beam along the length direction of the main beam, and two ends of the telescopic beam assembly are respectively arranged outside two ends of the main beam; A first lifting assembly, the first lifting assembly is installed at both ends of the telescopic beam assembly, and the first lifting assembly is used to lift the outer end of the container; A double-box moving mechanism, which is installed in the middle of the main beam and is used to movably lift the inner end of the container; A pair of first limit detection switches, wherein the pair of first limit detection switches are installed at the center axis position of the bottom of the main beam; A pair of second limit detection switches are respectively installed at positions on both sides of the central axis of the bottom of the main beam, and the second limit detection switches are used to detect whether the distance between the upper surface of the container lifted by the lifting device and the second limit detection switch is greater than a predetermined distance.

2. The anti-falling container twin-box lifting device according to claim 1 is characterized in that: The interior of the main beam is hollow to form a frame structure.

3. The anti-falling container twin-box lifting device according to claim 2 is characterized in that: The telescopic beam assembly comprises: A pair of telescopic beams, wherein the inner ends of the pair of telescopic beams are arranged inside the frame, and the two outer ends of the pair of telescopic beams are movably extended out of the two ends of the frame.

4. The anti-falling container twin-box lifting device according to claim 3 is characterized in that: The first lifting assembly includes four first rotary lock mechanisms, and the four first rotary lock mechanisms are respectively installed at four corners of the two outer ends of a pair of telescopic beams.

5. The anti-falling container twin-box lifting device according to claim 2, characterized in that: The double-box moving mechanism comprises: A driving mechanism, the driving mechanism being installed in the middle of the frame; Four mobile racks, each of which is disposed on both sides of the main beam in a length direction, and the four mobile racks are connected to the driving mechanism so that a pair of the mobile racks on one side can be separated / closed relative to the central axis of the frame; Four second rotary lock mechanisms are respectively mounted on the four movable frames so as to be movable up and down.

6. The anti-falling container twin-box lifting device according to claim 5, characterized in that: The second rotary lock mechanism is installed on the outer side of the moving frame.

7. The anti-falling container twin-box lifting device according to claim 2, characterized in that: A pair of the first limit detection switches are installed on both sides of the central axis of the bottom of the frame.

8. The anti-falling container twin-box lifting device according to claim 7, characterized in that: Connecting beams are respectively provided at the positions on both sides of the central axis of the bottom of the frame, and the two ends of the two connecting beams are respectively connected to the two sides. A pair of the second limit detection switches are respectively installed on the connecting beam.

9. The anti-falling container twin-box lifting device according to claim 3, characterized in that: The telescopic beam assembly further comprises a guide assembly, wherein the guide assembly is mounted on two outer ends of a pair of the telescopic beams.

10. The anti-falling container twin-box lifting device according to claim 9, characterized in that: The guide assembly comprises four guide plates, and the four guide plates are respectively installed at four corners of the two outer ends of a pair of telescopic beams.

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