A heavy load automatic levelling hoist

Abstract

The present application relates to hoisting tool technical field, specifically relates to a kind of heavy load automatic leveling hoisting device, hoisting device includes hanger, multiple first hoist chain and multiple leveling mechanism;The top of hanger is hinged with multiple leveling mechanism, and the bottom is movably connected with multiple first hoist chain;Leveling mechanism includes telescopic device and second hoist chain;The first end of telescopic device is movably connected with second hoist chain, and the second end is movably connected with the top of hanger;Multiple leveling mechanism is arranged around the top of hanger.Compared with the leveling mode that existing chain length is adjusted by hand-operated hoist, the chain of the present application does not need to be length-adjusted, hoisting device is leveled by multiple telescopic devices to hoisting module, and the efficiency of leveling is higher, and the time is shorter;Remote can be operated, and operator does not need to operate by climbing, and the safety of operation is guaranteed;Compared with the manual adjustment mode of hand-operated hoist, the automatic adjustment precision of telescopic device is higher.

Description

Technical Field

[0001] This invention relates to the field of Mic lifting fixture technology, specifically to a heavy-duty automatic leveling lifting device. Background Technology

[0002] Mic, or Modular Integrated Building, enables rapid prefabricated construction on-site, significantly improving construction efficiency. Mic hoisting modules are mostly plates or blocks. Currently, the hoisting of these modules during loading and installation in prefabricated buildings requires the workpiece to be in a relatively balanced state. A common method is to add several hand-operated hoists between the hoisting frame and the hoisting module, controlling the chain length to ensure product balance. During leveling, multiple lifting operations are required, with manual observation of the workpiece's balance and repeated adjustments of the hoist chain length until the workpiece is leveled. This process is time-consuming, poses safety risks due to operators repeatedly climbing to heights, and suffers from significant errors in visually assessing balance, making it unsuitable for applications requiring high precision. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a heavy-duty automatic leveling hoisting device, which solves the technical problems of long leveling time, high safety risk and poor leveling accuracy of the existing Mic hoisting module hoisting device.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the heavy-duty automatic leveling hoisting device of the present invention includes a hanger, multiple first lifting chains, and multiple leveling mechanisms.

[0007] The top of the hanger is hinged with multiple leveling mechanisms, and the bottom is movably connected with multiple first lifting chains;

[0008] The leveling mechanism includes an expansion joint and a second suspension chain; the first end of the expansion joint is movably connected to the second suspension chain, and the second end is movably connected to the top of the hanger.

[0009] Multiple leveling mechanisms are arranged around the top of the hanger.

[0010] Optionally, the telescopic device is connected to the second lifting chain via a lifting chain connector;

[0011] The chain connector includes a U-shaped sleeve and a first ear plate; the U-shaped sleeve is fitted onto the first end of the telescopic device, and the two are hinged by a pin.

[0012] The first ear plate is disposed on the end face of the U-shaped sleeve opposite to the telescopic device; a through hole is provided on the first ear plate, and the second hanging chain is fastened to the through hole.

[0013] Optionally, the end of the first ear plate facing the second chain and / or the end of the U-shaped sleeve facing away from the second chain are configured as an arc end.

[0014] Optionally, the chain connector further includes a connecting ring;

[0015] The second chain corresponds to the through hole and is fastened to the connecting ring.

[0016] Optionally, a second lug is provided at the top of the hanger;

[0017] The second end of the telescopic device is connected to the second ear plate via an I-shaped sleeve; one end of the I-shaped sleeve is fitted onto the second end of the telescopic device, and the two are hinged together by a pin; the other end of the I-shaped sleeve is fitted onto the second ear plate, and the two are hinged together by a pin.

[0018] Optionally, a pair of limiting blocks are provided on the outer side of the second ear plate;

[0019] The second ear plate is disposed between a pair of limiting blocks, and the limiting blocks can limit the rotation angle of the I-shaped sleeve on the second ear plate.

[0020] Optionally, the bottom end of the hanger is provided with a connecting strip, and the connecting strip has multiple connecting holes along its length.

[0021] Both ends of the first chain are fastened with hooks; the hooks are fastened to the connecting holes.

[0022] Optionally, the hoisting device further includes a balance detection mechanism, which includes a telescopic rod and a laser level.

[0023] The bottom end of the hanger is provided with a base, and one end of the telescopic rod is hinged to the base so that the telescopic rod can swing in a first direction;

[0024] The telescopic rod is capable of extending and retracting along its axial direction;

[0025] The other end of the telescopic rod is connected to the laser level.

[0026] Optionally, the bottom end of the hanger is provided with multiple support legs;

[0027] The telescopic rod can swing above the bottom surface of the multiple legs.

[0028] (III) Beneficial Effects

[0029] The beneficial effects of this invention are:

[0030] Both the first and second lifting chains are fixed-length chains. By setting the end nodes of the first lifting chain, the leveling mechanism, and the second lifting chain as movable nodes, and by surrounding the top of the lifting frame with multiple leveling mechanisms, and then using telescopic joints for extension and retraction adjustment, the lifting module is ultimately leveled. Therefore, compared to the existing leveling method of adjusting chain length using a manual chain hoist, the chain of this invention does not require length adjustment. The lifting device levels the lifting module through multiple telescopic joints, resulting in higher efficiency and shorter time. It can be operated remotely, eliminating the need for operators to climb to heights, thus ensuring operational safety. Compared to the manual adjustment method of a manual chain hoist, the automated adjustment of the telescopic joints offers higher precision. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the heavy-duty automatic leveling hoisting device of the present invention;

[0032] Figure 2 This is a front view of the heavy-duty automatic leveling hoisting device of the present invention;

[0033] Figure 3 This is a side view of the heavy-duty automatic leveling hoisting device of the present invention;

[0034] Figure 4 This is a connection diagram of the chain connector of the present invention;

[0035] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 6 for Figure 1 Enlarged view of point C in the middle;

[0037] Figure 7 for Figure 1 Enlarged view of point B in the middle.

[0038] [Explanation of Labels in the Attached Image]

[0039] 1: Hanger; 11: Second ear plate; 111: Limiting block; 12: Connecting strip; 121: Connecting hole; 13: Base; 14: Support leg;

[0040] 2: Leveling mechanism; 21: Telescopic device; 22: Second suspension chain; 23: Suspension chain connector; 231: U-shaped sleeve; 232: First ear plate; 2321: Through hole; 2322: Arc end; 233: Connecting ring; 24: Hook;

[0041] 3: First hanging chain;

[0042] 4: I-shaped sleeve;

[0043] 5: Balance detection mechanism; 51: Telescopic pole; 52: Laser level;

[0044] 6: Lifting module; 61: Lifting ring;

[0045] 7: Laser reference line. Detailed Implementation

[0046] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] See Figures 1 to 4 as well as Figure 6 The present invention provides a heavy-duty automatic leveling hoisting device, which includes a hoist 1, multiple first lifting chains 3 and multiple leveling mechanisms 2; the top end of the hoist 1 is hinged to multiple leveling mechanisms 2, and the bottom end is movably connected to multiple first lifting chains 3; the leveling mechanism 2 includes a telescopic member 21 and a second lifting chain 22; the first end of the telescopic member 21 is movably connected to the second lifting chain 22, and the second end is movably connected to the top end of the hoist 1; the multiple leveling mechanisms 2 are arranged around the top end of the hoist 1.

[0051] The movable connection can be hinged or snap-fit ​​(i.e., interlocking structure), with snap-fit ​​being preferred. Multiple second lifting chains 22 are movably connected to the underside of a base plate. The lifting module 6 is equipped with multiple lifting rings 61, and the first lifting chain 3 is snapped to the lifting rings 61. The telescopic device 21 is a cylinder, hydraulic cylinder, electric push rod, or other linear actuator, preferably a hydraulic cylinder. Since hydraulic systems can withstand larger loads—the weight of the lifting module 6 is generally 10 to 40 tons—using hydraulics can ensure a larger lifting load at a relatively low cost. The telescopic device 21 is powered by its own battery, and its extension and retraction are controlled remotely.

[0052] The second lifting chain 223 is formed by multiple O-rings, creating a structure similar to a "soft connection," which can adapt to the displacement changes between the first end of the telescopic member 21 and the movable node of the base plate. By movably connecting the two ends of the telescopic member 21, the movable node swings accordingly when the telescopic member 21 extends or retracts, thereby driving the hanger 1 to swing and achieving leveling of the hanger 1, i.e., the lifting module 6.

[0053] Similarly, the "soft connection" structure formed by the first lifting chain 3 can improve the adaptability to errors such as manufacturing errors of the lifting module 6 and installation errors of the lifting ring 61, and adaptively lift the lifting module 6 without adjusting the length of the first lifting chain 3.

[0054] Both the first lifting chain 3 and the second lifting chain 22 are fixed-length chains. By setting the corresponding end nodes of the first lifting chain 3, the leveling mechanism 2, and the second lifting chain 22 as movable nodes, and by surrounding the top of the lifting frame 1 with multiple leveling mechanisms 2, and then adjusting the length and width using the telescopic joint 21, the lifting module 6 is finally leveled. Therefore, compared with the existing leveling method of adjusting the chain length using a manual chain hoist, the chain of this invention does not require length adjustment. The lifting device levels the lifting module 6 through multiple telescopic joints 21, resulting in higher leveling efficiency and shorter time. It can be operated remotely, eliminating the need for operators to climb to heights, thus ensuring operational safety. Compared with the manual adjustment method of a manual chain hoist, the telescopic joint 21 provides higher precision in automated adjustment.

[0055] Furthermore, the telescopic device 21 and the second suspension chain 22 are connected by a suspension chain connector 23; the suspension chain connector 23 includes a U-shaped sleeve 231 and a first ear plate 232; the U-shaped sleeve 231 is fitted onto the first end of the telescopic device 21, and the two are hinged by a pin; the first ear plate 232 is disposed on the end face of the U-shaped sleeve 231 facing away from the telescopic device 21; a through hole 2321 is provided on the first ear plate 232, and the second suspension chain 22 is fastened to the through hole 2321. In this embodiment, the suspension chain connector 23 includes three ear plates and a connecting plate, wherein two ear plates are arranged in parallel and welded to one side of the connecting plate to form a U-shaped sleeve 231, and the remaining ear plate is welded to the other side of the connecting plate. The U-shaped sleeve 231 is fitted onto the push rod of the telescopic device 21, improving the limiting strength and transmission stability. The through hole 2321 is fastened to the second lifting chain 22. The fastening method allows the through hole 2321 and the second lifting chain 22 to swing in multiple directions. Compared with the hinge method, it is more adaptable to lifting the lifting module 6 with different centers of gravity.

[0056] Secondly, the end of the first ear plate 232 facing the second lifting chain 22 and / or the end of the U-shaped sleeve 231 facing away from the second lifting chain 22 are configured as arc-shaped ends 2322. In this embodiment, the ends of the telescopic device 21 and its push rod are also configured as arc-shaped ends 2322 to avoid interference from other components on the swing of the movable node and improve the stability of the swing of the movable node. Furthermore, the arc-shaped ends 2322 can expand the maximum swing angle of the movable node and improve the adaptability to adjusting different sizes of lifting modules 6.

[0057] In addition, the chain connector 23 also includes a connecting ring 233; the second chain 22 and the through hole 2321 are correspondingly fastened to the connecting ring 233. The connecting ring 233 can be welded together end to end after the second chain 22 and the through hole 2321 are inserted; or it can be directly wrapped around several times, as long as its structural strength is guaranteed. The wrapping method makes it easier to flexibly assemble and disassemble the second chain 22 and the first ear plate 232. The connecting ring 233 is a circular ring, and its internal space is generally much larger than the internal space of the O-ring of the second chain 223, thereby further increasing the relative swing angle and swing direction between the second chain 22 and the through hole 2321.

[0058] like Figure 5 As shown, a second ear plate 11 is provided at the top of the hanger 1; the second end of the expansion joint 21 is connected to the second ear plate 11 through an I-shaped sleeve 4; one end of the I-shaped sleeve 4 is fitted onto the second end of the expansion joint 21, and the two are hinged by a pin; the other end of the I-shaped sleeve 4 is fitted onto the second ear plate 11, and the two are hinged by a pin. Specifically, the I-shaped sleeve 4 is formed by welding a connecting plate and a pair of hinge plates, and the whole is in the shape of an I-beam. The I-beam structure can enhance the connection strength of the I-shaped sleeve 4 and improve the reliability of the lifting device.

[0059] Optionally, a pair of limiting blocks 111 are provided on the outer side of the second ear plate 11; the second ear plate 11 is disposed between the pair of limiting blocks 111, and the limiting blocks 111 can limit the rotation angle of the I-shaped sleeve 4 on the second ear plate 11. In this embodiment, the bottom surface of the pair of limiting blocks 111 and the bottom surface of the second ear plate 11 are located in the same horizontal plane, so that the limiting blocks 111 can both increase the area of ​​the second ear plate 11 applying force to the hanger 1 and extend the service life of the second ear plate 11, and limit the swing angle of the I-shaped sleeve 4, thus serving a dual purpose.

[0060] Secondly, a connecting strip 12 is provided at the bottom of the hanger 1, and multiple connecting holes 121 are opened along its length. Hooks 24 are fastened to both ends of the first lifting chain 3; the hooks 24 are fastened to the connecting holes 121. Specifically, the number of connecting holes 121 is usually greater than the number of first lifting chains 3. The lower end of the first lifting chain 3 is fixed to the lifting ring 61, and the upper end of the first lifting chain 3 can be adjusted in the vertical direction by changing different connecting holes 121. This improves the adaptability to lifting modules 6 of different sizes, reduces the inventory of first lifting chains 3 of different fixed lengths, and enhances the flexibility of the lifting device. The hooks 24 are spring-loaded hooks; pressing the lever quickly opens the circumferential notch of the hook 24, facilitating quick installation and removal of the hooks 24.

[0061] See Figure 7 The hoisting device also includes a balance detection mechanism 5, which comprises a telescopic rod 51 and a laser level 52; a base 13 is provided at the bottom of the hanger 1, and one end of the telescopic rod 51 is hinged to the base 13 so that the telescopic rod 51 can swing in a first direction, the first direction being... Figure 2 The direction of rotation is clockwise or counterclockwise within the plane shown; the telescopic rod 51 can extend and retract along its axial direction; the other end of the telescopic rod 51 is connected to the laser level 52. Specifically, the telescopic rod 51 can rotate axially around the hinge axis of the base 13. The telescopic rod 51 includes a detection station and a storage station. When the hoisting device is idle, the telescopic rod 51 at the storage station swings to a horizontal state, which facilitates the lowering of the hoisting device; the telescopic rod 51 at the detection station swings to a vertical state. After the laser level 52 is turned on, the laser level 52 emits a laser. Using the laser as a reference line, the multiple telescopic devices 21 are finely adjusted according to the distance between the laser reference line 7 and the bottom plane of the hoisting module 6, so that the hoisting module 6 can achieve a high degree of balance.

[0062] During freight hoisting, the hoisting module 6 may tilt due to issues such as the center of gravity deviation itself. Furthermore, the chain holes or connecting holes 121 on the gantry 1 need to be matched with hoisting modules 6 of various sizes, so the fixed-length chain may be pulled at an angle. The gantry 1 and the hoisting module 6 are not necessarily parallel to each other. Therefore, the hoisting device needs to balance the hoisting module 6 through the leveling mechanism 2, which usually adjusts the bottom surface of the hoisting module 6 to be parallel to the horizontal plane.

[0063] In one embodiment, the hanger 1 is lifted by the base plate, and the balance detection mechanism 5 is rotated downward to the detection position. The telescopic rod 51 is extended to a position slightly above the bottom of the hoisting module 6 to avoid the laser level 52 from colliding with the ground. The first lifting chain 3 is fastened to the lifting ring 61, and the base plate further lifts the hoisting module 6 to a low altitude. The telescopic lengths of multiple telescopic devices 21 are manually adjusted according to the tilt position of the hoisting module 6 until the hoisting module 6 reaches a relatively balanced position. The telescopic rod 51 is further extended and the laser level 52 is activated, moving the laser emitted by the laser level 52 to a position about 100mm away from the bottom surface of the hoisting module 6, that is, the laser reference line 7 is located on the side of the hoisting module 6. Using the laser reference line 7 as a baseline, multiple telescopic devices 21 are finely adjusted according to the distance between the baseline and the bottom surface of the hoisting module 6. For example, the four corners of the bottom surface of the hoisting module 6 are adjusted to be in the horizontal plane, so as to achieve high-precision leveling of the hoisting module 6. The hoisting device of the present invention automatically adjusts the balance through multiple leveling mechanisms 2, with the balance detection mechanism 5 as an auxiliary, effectively improving the leveling efficiency, safety and leveling accuracy of the hoisting module 6.

[0064] Furthermore, the bottom of the hanger 1 is provided with multiple support legs 14; the telescopic rod 51 can swing to above the bottom surface of the multiple support legs 14. The multiple support legs 14 allow the hanger 1 to be placed directly on the ground, and the height difference between the bottom surface of the hanger 1 and the ground improves the safety of the balance detection mechanism 5 when it is in the storage position, effectively avoiding the situation where external components collide with the balance detection mechanism 5 during the movement of the hoisting device.

[0065] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A heavy load self-leveling hoisting device, characterized in that, The heavy-load automatic leveling hoisting device comprises a hanger (1), a plurality of first hoisting chains (3) and a plurality of leveling mechanisms (2); The top end of the hanger (1) is hingedly connected with the plurality of leveling mechanisms (2), and the bottom end is movably connected with the plurality of first hoisting chains (3); The leveling mechanism (2) comprises a telescopic device (21) and a second hoisting chain (22); the first end of the telescopic device (21) is movably connected with the second hoisting chain (22), and the second end is movably connected with the top end of the hanger (1); The plurality of leveling mechanisms (2) are circumferentially arranged at the top end of the hanger (1); The telescopic device (21) and the second hoisting chain (22) are connected through a hoisting chain connecting piece (23); the hoisting chain connecting piece (23) comprises a U-shaped sleeve (231) and a first lug plate (232); the U-shaped sleeve (231) is sleeved on the first end of the telescopic device (21), and the two are hingedly connected through a pin shaft; the first lug plate (232) is arranged on one end face of the U-shaped sleeve (231) away from the telescopic device (21); a through hole (2321) is formed in the first lug plate (232), and the second hoisting chain (22) is buckled with the through hole (2321); One end of the first lug plate (232) facing the second hoisting chain (22) and / or one end of the U-shaped sleeve (231) away from the second hoisting chain (22) is provided as a circular arc end (2322); The hoisting chain connecting piece (23) further comprises a connecting ring (233); the second hoisting chain (22) is buckled with the connecting ring (233) corresponding to the through hole (2321); The top end of the hanger (1) is provided with a second lug plate (11); the second end of the telescopic device (21) is connected with the second lug plate (11) through a J-shaped sleeve (4); one end of the J-shaped sleeve (4) is sleeved on the second end of the telescopic device (21), and the two are hingedly connected through a pin shaft; the other end of the J-shaped sleeve (4) is sleeved on the second lug plate (11), and the two are hingedly connected through a pin shaft.

2. The heavy-duty self-leveling hoist of claim 1, wherein, One pair of limiting blocks (111) is arranged on the outer side of the second lug plate (11); The second lug plate (11) is arranged between the pair of limiting blocks (111), and the limiting blocks (111) can limit the rotation angle of the J-shaped sleeve (4) on the second lug plate (11).

3. A heavy duty self-leveling lifting device according to claim 1 or 2, characterized in that The bottom end of the hanger (1) is provided with a connecting strip (12), and a plurality of connecting holes (121) are formed in the connecting strip (12) along the length direction thereof; Both ends of the first hoisting chain (3) are buckled with hooks (24); the hooks (24) are buckled with the connecting holes (121).

4. The heavy-duty self-leveling hoist of claim 1 or 2, wherein, The hoisting device further comprises a balance detection mechanism (5), which comprises a telescopic rod (51) and a laser level (52); The bottom end of the hanger (1) is provided with a base (13), and one end of the telescopic rod (51) is hingedly connected with the base (13) so that the telescopic rod (51) can swing in a first direction; The telescopic rod (51) can be axially telescopic; The other end of the telescopic rod (51) is connected with the laser level (52).

5. The heavy-duty self-leveling lifting device of claim 4, wherein, The bottom end of the hanger (1) is provided with a plurality of legs (14); The telescopic rod (51) can swing above the bottom surface of the plurality of legs (14).

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