Hoisting device capable of automatically leveling heavy load

Abstract

The invention relates to the technical field of hoisting tools, in particular to a heavy-load automatic leveling hoisting device which comprises a hoisting frame, a plurality of first hoisting chains and a plurality of leveling mechanisms. A plurality of leveling mechanisms are hinged to the top end of the hanging bracket, and a plurality of first hanging chains are movably connected to the bottom end; the leveling mechanism comprises an expansion piece and a second lifting chain; the first end of the expansion piece is movably connected with the second sling chain, and the second end is movably connected with the top end of the hanger; the multiple leveling mechanisms are arranged at the top end of the hanging bracket in a surrounding mode. Compared with an existing leveling mode that the length of a chain is adjusted through a chain block, the length of the chain does not need to be adjusted, the hoisting device conducts leveling on the hoisting module through a plurality of expansion pieces, the leveling efficiency is higher, and the leveling time is short; remote operation can be achieved, an operator does not need to climb to operate, and operation safety is guaranteed; and compared with a manual adjustment mode of a chain block, the automatic adjustment precision of the expansion piece is higher.

Description

Technical Field

[0001] The invention relates to the technical field of Mic hoisting tooling, and in particular to a heavy-load automatic leveling hoisting device. Background Art

[0002] Mic stands for modular integrated building, which can quickly carry out prefabricated construction at the construction site, greatly improving construction efficiency. Most of Mic's lifting modules are plates or blocks. The current prefabricated building lifting modules require the workpiece to be in a relatively balanced state during loading and installation. A common method is to add several hand winches between the hanger and the lifting module, and control the length of the chain through the hand winch to ensure the balance of the product. During the leveling process, it is necessary to lift the workpiece multiple times, manually observe the balance state of the workpiece, and adjust the length of the winch chain multiple times until the workpiece is leveled. This process requires a long operation time, and there are safety risks for operators to perform multiple high-altitude operations; and the error in visually observing the balance state is large, which is difficult to meet high-precision occasions. Summary of the invention

[0003] 1. Technical issues to be resolved

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

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned object, the heavy-load automatic leveling hoisting device of the present invention comprises a hanger, a plurality of first hoisting chains and a plurality of leveling mechanisms;

[0007] The top end of the hanger is hinged with a plurality of leveling mechanisms, and the bottom end is movably connected with a plurality of first hanging chains;

[0008] The leveling mechanism comprises a telescoping device and a second suspension chain; a first end of the telescoping device is movably connected to the second suspension chain, and a second end of the telescoping device is movably connected to the top end of the hanger;

[0009] A plurality of leveling mechanisms are arranged around the top end of the hanger.

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

[0011] The chain link comprises a U-shaped sleeve and a first ear plate; the U-shaped sleeve is sleeved on the first end of the retractor, and the two are hinged by a pin shaft;

[0012] The first ear plate is arranged on an end surface of the U-shaped sleeve away from the telescoping device; a through hole is formed on the first ear plate, and the second hanging chain is buckled with the through hole.

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

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

[0015] The second hanging chain is buckled with the connecting ring corresponding to the through hole.

[0016] Optionally, a second ear plate is provided at the top end of the hanger;

[0017] The second end of the retractor is connected to the second ear plate through an I-shaped sleeve; one end of the I-shaped sleeve is sleeved on the second end of the retractor, and the two are hinged through a pin; the other end of the I-shaped sleeve is sleeved on the second ear plate, and the two are hinged through a pin.

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

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

[0020] Optionally, a connecting strip is provided at the bottom end of the hanger, and a plurality of connecting holes are opened along the length direction of the connecting strip;

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

[0022] Optionally, the hoisting device further comprises a balance detection mechanism, and the balance detection mechanism comprises a telescopic rod and a laser level;

[0023] A base is provided at the bottom end of the hanger, 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 can be telescopic along its axial direction;

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

[0026] Optionally, a plurality of supporting feet are provided at the bottom end of the hanger;

[0027] The telescopic rod can be swung above the bottom surfaces of the plurality of supporting legs.

[0028] (III) Beneficial effects

[0029] The beneficial effects of the present invention are:

[0030] The first hoisting chain and the second hoisting chain are both fixed-length chains. By setting the end nodes corresponding to the first hoisting chain, the leveling mechanism and the second hoisting chain as active nodes, and by surrounding and setting multiple leveling mechanisms at the top of the hanger, and then adjusting the telescopic adjustment through the telescope, the hoisting module can be leveled. Therefore, compared with the existing leveling method of adjusting the chain length by hand chain hoists, the chain of the present invention does not need to be adjusted in length, and the hoisting device uses multiple telescopes to level the hoisting module, which has higher efficiency and shorter time; it can be operated remotely, and the operator does not need to climb to operate, which ensures the safety of the operation; compared with the manual adjustment method of hand chain hoists, the automatic adjustment accuracy of telescopes is higher. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0033] Figure 3 A side view of the heavy-load automatic leveling lifting device of the present invention;

[0034] Figure 4 It is a connection schematic diagram of the suspension chain connecting piece of the present invention;

[0035] Figure 5 for Figure 1 The 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] [Description of Reference Numerals]

[0039] 1: hanger; 11: second ear plate; 111: limit block; 12: connecting strip; 121: connecting hole; 13: base; 14: support foot;

[0040] 2: leveling mechanism; 21: telescopic device; 22: second lifting chain; 23: lifting chain connecting piece; 231: U-shaped sleeve; 232: first ear plate; 2321: through hole; 2322: arc end; 233: connecting ring; 24: hook;

[0041] 3: The first hanging chain;

[0042] 4: Industrial sleeve;

[0043] 5: balance detection mechanism; 51: telescopic rod; 52: laser level;

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

[0045] 7: Laser reference line. DETAILED DESCRIPTION

[0046] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

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

[0048] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

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

[0051] Among them, the movable connection can be a hinge or a buckle connection (i.e., an interlocking structure), preferably a buckle connection. A plurality of second lifting chains 22 are movably connected under a base plate. A plurality of lifting rings 61 are provided on the lifting module 6, and the first lifting chain 3 is buckled with the lifting rings 61. The telescope 21 is a cylinder, a hydraulic cylinder, an electric push rod or other linear thruster, preferably a hydraulic cylinder. Since the hydraulic pressure bears a large load, the weight of the lifting module 6 is generally 10 to 40 tons, so the use of hydraulic pressure can ensure a larger lifting load at a relatively low cost. The electricity used by the telescope 21 can be provided by its own power battery, and the extension and retraction of the telescope 21 is controlled by remote control.

[0052] The second suspension chain 223 is formed by buckling a plurality of O-rings to form a structure similar to a "soft connection", which can adapt to the displacement change between the first end of the retractor 21 and the active node of the base plate. By movably connecting the two ends of the retractor 21, the active node swings accordingly when the retractor 21 is extended and retracted, thereby driving the hanger 1 to swing, thereby achieving the leveling of the hanger 1, that is, the hoisting 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 can adaptively lift the lifting module 6 without adjusting the length of the first lifting chain 3.

[0054] The first hoisting chain 3 and the second hoisting chain 22 are both fixed-length chains. By setting the end nodes corresponding to the first hoisting chain 3, the leveling mechanism 2 and the second hoisting chain 22 as active nodes, by surrounding and setting multiple leveling mechanisms 2 at the top of the hanger 1, and then adjusting the telescopic device 21, the hoisting module 6 is finally leveled. Therefore, compared with the existing leveling method of adjusting the chain length by hand chain hoists, the chain of the present invention does not need to be adjusted in length, and the hoisting device uses multiple telescopic devices 21 to level the hoisting module 6, which is more efficient and takes less time; it can be operated remotely, and the operator does not need to climb to operate, which ensures the safety of the operation; compared with the manual adjustment method of hand chain hoists, the automatic adjustment accuracy of the telescopic device 21 is higher.

[0055] Furthermore, the retractor 21 is connected to the second lifting chain 22 through a lifting chain connector 23; the lifting chain connector 23 includes a U-shaped sleeve 231 and a first ear plate 232; the U-shaped sleeve 231 is sleeved on the first end of the retractor 21, and the two are hinged by a pin; the first ear plate 232 is arranged on an end face of the U-shaped sleeve 231 away from the retractor 21; a through hole 2321 is provided on the first ear plate 232, and the second lifting chain 22 is buckled with the through hole 2321. In this embodiment, the lifting 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 sleeved on the push rod of the retractor 21, which improves the limiting strength and transmission stability. The through hole 2321 is buckled with the second lifting chain 22, and the buckling method enables the through hole 2321 and the second lifting chain 22 to swing relatively in multiple directions. Compared with the hinged method, it is more adaptable to lifting the lifting modules 6 with different centers of gravity.

[0056] Secondly, one end of the first ear plate 232 facing the second lifting chain 22 and / or one end of the U-shaped sleeve 231 away from the second lifting chain 22 is set as an arc end 2322. In this embodiment, the ends of the telescoping device 21 and its push rod are also set as arc ends 2322 to avoid interference with the swing of the active node caused by other components, thereby improving the stability of the swing of the active node. In addition, the arc end 2322 can expand the maximum swing angle of the active node and improve the adaptability of adjusting the hoisting modules 6 of different sizes.

[0057] In addition, the chain connector 23 also includes a connecting ring 233; the second chain 22 and the through hole 2321 are buckled with the connecting ring 233. The connecting ring 233 can be welded to form a closed loop after the second chain 22 and the through hole 2321 are passed through; or it can be directly wound several times, as long as its structural strength can be guaranteed. The winding method is more convenient for the flexible disassembly and assembly of 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, so that the relative swing angle and swing direction between the second chain 22 and the through hole 2321 can be further increased.

[0058] like Figure 5 As shown, the top of the hanger 1 is provided with a second ear plate 11; the second end of the expander 21 is connected to the second ear plate 11 through an I-shaped sleeve 4; one end of the I-shaped sleeve 4 is sleeved on the second end of the expander 21, and the two are hinged through a pin; the other end of the I-shaped sleeve 4 is sleeved on the second ear plate 11, and the two are hinged through a pin. Specifically, the I-shaped sleeve 4 is welded and formed by a connecting plate and a pair of hinged plates, and the whole is in an I-shaped shape. The I-shaped structure can enhance the connection strength of the I-shaped sleeve 4 and improve the reliability of the hoisting device.

[0059] Optionally, a pair of limit blocks 111 are provided on the outer side of the second ear plate 11; the second ear plate 11 is provided between the pair of limit blocks 111, and the limit blocks 111 can limit the rotation angle of the I-shaped sleeve 4 on the second ear plate 11. In this embodiment, the bottom surfaces of the pair of limit blocks 111 and the bottom surface of the second ear plate 11 are located in the same horizontal plane, so that the limit blocks 111 can not only increase the area of ​​the second ear plate 11 exerting force on the hanger 1, thereby extending the service life of the second ear plate 11, but also limit the swing angle of the I-shaped sleeve 4, serving two purposes.

[0060] Secondly, a connecting strip 12 is provided at the bottom end of the hanger 1, and a plurality of connecting holes 121 are provided along the length direction of the connecting strip 12; hooks 24 are buckled at both ends of the first hanging chain 3; the hooks 24 are buckled with the connecting holes 121. Specifically, the connecting holes 121 are usually more than the number of the first hanging chains 3, and the lower end of the first hanging chain 3 is fixed to the hanging ring 61. The upper end of the first hanging chain 3 can adjust the length of the first hanging chain 3 in the vertical direction by replacing different connecting holes 121, thereby improving the hoisting adaptability to hoisting modules 6 of different sizes, reducing the inventory of first hanging chains 3 of different fixed lengths, and improving the flexibility of the use of the hoisting device. The hook 24 is a spring-opening hook, and the gap on the circumference of the hook 24 can be quickly opened by pressing the lever, which is convenient for the quick disassembly and assembly of the hook 24.

[0061] See also Figure 7 The hoisting device also includes a balance detection mechanism 5, which includes a telescopic rod 51 and a laser level 52; a base 13 is provided at the bottom end 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, and the first direction is Figure 2 The telescopic rod 51 can rotate clockwise or counterclockwise in the plane shown; the telescopic rod 51 can be extended and retracted 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 around the axial direction of 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 of the storage station swings to a horizontal state, which is convenient for lowering the hoisting device; the telescopic rod 51 of the detection station swings to a vertical state. After the laser level 52 is turned on, the laser level 52 emits laser, and uses the laser as a reference line. According to the distance between the laser reference line 7 and the bottom plane of the hoisting module 6, the multiple telescopes 21 are fine-tuned, and the hoisting module 6 can achieve a high-precision balance.

[0062] During freight lifting, the lifting module 6 will tilt due to problems such as the deviation of the center of gravity of the lifting module 6 itself, and the lifting chain hole or the connecting hole 121 on the hanger 1 needs to match lifting modules 6 of various sizes, so the fixed-length chain will be diagonally pulled, and the hanger 1 and the lifting module 6 are not necessarily parallel to each other. Therefore, the lifting device needs to balance the hoisting module 6 through the leveling mechanism 2, usually by adjusting the bottom surface of the lifting module 6 to be parallel to the horizontal plane.

[0063] In one embodiment, the hanger 1 is lifted by the base plate, and then the balance detection mechanism 5 is rotated downward to the detection station, and the telescopic rod 51 is extended to a position slightly above the bottom end of the lifting module 6 to prevent the laser level 52 from colliding with the ground; the first lifting chain 3 is buckled with the lifting ring 61, and the base plate further lifts the lifting module 6 to a low altitude; the telescopic lengths of multiple telescopes 21 are manually adjusted according to the tilt position of the lifting module 6 by visual inspection until the lifting module 6 reaches a relatively balanced position; the telescopic rod 51 is further extended and the laser level 52 is turned on, and the laser emitted by the laser level 52 is moved to a position about 100 mm away from the bottom surface of the lifting module 6, that is, the laser reference line 7 is located on the side of the lifting module 6, and the laser reference line 7 is used as the reference line. According to the distance between the reference line and the bottom surface of the lifting module 6, the multiple telescopes 21 are fine-tuned, for example, the four corners of the bottom surface of the lifting module 6 are adjusted to the horizontal plane, so that high-precision leveling of the lifting module 6 can be achieved. The hoisting device of the present invention automatically adjusts the balance through multiple leveling mechanisms 2, and the balance detection mechanism 5 serves as an auxiliary, which effectively improves the leveling efficiency, safety and leveling accuracy of the hoisting module 6.

[0064] Furthermore, a plurality of legs 14 are provided at the bottom of the hanger 1; the telescopic rod 51 can swing to above the bottom surface of the plurality of legs 14. The plurality of legs 14 enable 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 collision between the external components and the balance detection mechanism 5 during the movement of the hoisting device.

[0065] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A heavy-load automatic leveling lifting 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 hinged with a plurality of leveling mechanisms (2), and the bottom end is movably connected with a plurality of first hanging chains (3); The leveling mechanism (2) comprises a telescopic device (21) and a second lifting chain (22); a first end of the telescopic device (21) is movably connected to the second lifting chain (22), and a second end of the telescopic device (21) is movably connected to the top end of the hanger (1); A plurality of leveling mechanisms (2) are arranged around the top end of the hanger (1).

2. The heavy-load automatic leveling hoisting device according to claim 1, characterized in that: The retractor (21) is connected to the second lifting chain (22) via a lifting chain connecting piece (23); The chain link (23) comprises a U-shaped sleeve (231) and a first ear plate (232); the U-shaped sleeve (231) is sleeved on the first end of the telescopic device (21), and the two are hingedly connected via a pin shaft; The first ear plate (232) is arranged on an end surface of the U-shaped sleeve (231) 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 buckled with the through hole (2321).

3. The heavy-load automatic leveling hoisting device according to claim 2, characterized in that: One end of the first ear plate (232) facing the second hanging chain (22) and / or one end of the U-shaped sleeve (231) facing away from the second hanging chain (22) is arranged as an arc end (2322).

4. The heavy-load automatic leveling hoisting device according to claim 2, characterized in that: The suspension chain connecting piece (23) further comprises a connecting ring (233); The second hanging chain (22) is buckled with the through hole (2321) corresponding to the connecting ring (233).

5. The heavy-load automatic leveling hoisting device according to any one of claims 1 to 4, characterized in that: A second ear plate (11) is provided at the top end of the hanger (1); The second end of the retractor (21) is connected to the second ear plate (11) via an I-shaped sleeve (4); one end of the I-shaped sleeve (4) is sleeved on the second end of the retractor (21), and the two are hinged via a pin; the other end of the I-shaped sleeve (4) is sleeved on the second ear plate (11), and the two are hinged via a pin.

6. The heavy-load automatic leveling hoisting device according to claim 5, characterized in that: A pair of limit blocks (111) are arranged on the outer side of the second ear plate (11); The second ear plate (11) is arranged between a pair of limit blocks (111), and the limit blocks (111) are capable of limiting the rotation angle of the I-shaped sleeve (4) on the second ear plate (11).

7. The heavy-load automatic leveling hoisting device according to any one of claims 1 to 4, characterized in that: A connecting strip (12) is provided at the bottom end of the hanger (1), and a plurality of connecting holes (121) are provided on the connecting strip (12) along its length direction; Both ends of the first hanging chain (3) are buckled with hooks (24); the hooks (24) are buckled with the connecting holes (121).

8. The heavy-load automatic leveling hoisting device according to any one of claims 1 to 4, characterized in that: The hoisting device further comprises a balance detection mechanism (5), wherein the balance detection mechanism comprises a telescopic rod (51) and a laser level (52); A base (13) is provided at the bottom end 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 telescopic rod (51) is capable of telescoping along its axial direction; The other end of the telescopic rod (51) is connected to the laser level (52).

9. The heavy-load automatic leveling hoisting device according to claim 8, characterized in that: The bottom end of the hanger (1) is provided with a plurality of supporting legs (14); The telescopic rod (51) can swing to above the bottom surfaces of the plurality of supporting legs (14).

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