Lattice beam lifting device and grabbing tooling thereof

Abstract

The present invention relates to the technical field of lattice girder hoisting, and more specifically to a lattice girder hoisting device and a gripping fixture thereof. The lattice girder gripper comprises a hook, a gripper, a telescopic drive, an articulated rod, and a lattice girder fixture. The hook is provided with a first hook. The gripper and the hook are hingedly connected via an articulated rod. The gripper is provided with a second hook. One end of the telescopic drive is connected to the hook, and the other end is connected to the gripper. The telescopic drive can drive the second hook to rotate about the axis of the articulated rod to move the first hook and the second hook away from or toward each other. When the first hook and the second hook approach each other, they can clamp the lattice girder fixture. When the first hook and the second hook are closed together, their hook grooves overlap to form a receiving cavity, and the articulated rod is engaged in the receiving cavity, thereby enabling automatic gripping of the lattice girder. When the first hook and the second hook move away from each other, the receiving cavity opens, and the articulated rod can be released from the receiving cavity, thereby enabling automatic unloading of the lattice girder by the lattice girder hoisting device.

Description

Technical Field

[0001] The invention relates to the technical field of lattice beam hoisting, and in particular to a lattice beam hoisting device and a grabbing tool thereof. Background Art

[0002] Lattice reinforcement technology is a slope reinforcement technology that uses lattice beams (including mortar-laid blocks, cast-in-place reinforced concrete and prestressed concrete) to protect the slope surface and fixes it with anchor rods or cables. It is widely used.

[0003] Lattice girders are typically hoisted and transported using a crane equipped with a lifting device, with rebar pre-tied to the lattice girders. Before hoisting the lattice girders, the lifting device and rebar are manually connected; after the lattice girders are hoisted to the designated location, the connection between the lifting device and rebar must be manually disconnected. This means that both the installation of the lifting device before hoisting and the removal of the lifting device after hoisting require manual intervention, resulting in low efficiency in the assembly and disassembly of the lattice girders and the crane. Furthermore, hoisting operations are performed at low altitudes, with workers working underneath the crane, compromising safety. Summary of the Invention

[0004] (1) Technical issues to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a lattice beam hoisting device and a grabbing tool thereof, which solve the technical problem of low disassembly and assembly efficiency of the lattice beam and the crane.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned object, the lattice beam hoisting device of the present invention comprises a hook, a gripper, a telescopic driver, an articulated rod and a lattice beam tooling;

[0008] The hook is provided with a first hook;

[0009] The gripper is hinged to the hook via a hinged rod; a second hook is provided on the gripper;

[0010] One end of the telescopic actuator is connected to the hook, and the other end is connected to the gripper;

[0011] wherein the telescopic driver is capable of driving the second hook to rotate about the axis of the hinged rod so as to move the first hook and the second hook away from or closer to each other;

[0012] The first hook and the second hook are capable of clamping the lattice beam tooling when they are close to each other.

[0013] Optionally, the pair of second hooks are arranged below the pair of first hooks; and the free ends of the pair of second hooks and the pair of first hooks can abut against each other in a one-to-one correspondence.

[0014] Optionally, the pair of second hooks are arranged on the inner side of the pair of first hooks.

[0015] Optionally, the lattice girder hoisting device further includes a top support plate and a supporting plate;

[0016] The top support plate is connected to the gripper and is arranged below the gripper;

[0017] The supporting plate is connected to the top supporting plate and is arranged toward the lattice beam tooling.

[0018] Optionally, the lattice beam tooling includes a hanger, a connecting plate, a pair of connecting blocks and a plurality of U-shaped hoops;

[0019] The connecting block is connected to the boom, and the other end is connected to the connecting plate; a pair of connecting blocks are provided at both ends of the boom in a one-to-one correspondence; the first hook and the second hook are able to clamp the boom when they are close to each other;

[0020] The two free ends of the U-shaped clamp are threadedly connected to the connecting plate.

[0021] Optionally, the lattice beam tooling further includes a pair of side baffles;

[0022] The side baffle is vertically arranged on the top surface of the connecting plate;

[0023] A support plate avoidance groove is provided on the connecting plate; the support plate avoidance groove is arranged between a pair of side baffles.

[0024] Optionally, the hook is provided with an ear plate;

[0025] The ear plate is connected to the side baffle through a safety pin.

[0026] Optionally, the connecting plate is provided with a plurality of pairs of threaded holes along a direction perpendicular to the axis of the boom;

[0027] The U-shaped clamp is connected to the threaded hole through a nut.

[0028] Optionally, the lattice girder tooling includes a connecting rod, a pair of lifting hooks, a pair of steel wire ropes, a plurality of first insertion rods and a plurality of second insertion rods;

[0029] One end of the lifting hook is connected to a plurality of the first insertion rods, and the other end is connected to the connecting rod; a pair of the lifting hooks are provided at both ends of the connecting rod in a one-to-one correspondence;

[0030] One end of the steel wire rope is connected to the connecting rod, and the other end is connected to a plurality of second plug rods; a pair of the steel wire ropes are arranged on the inner side of a pair of the lifting hooks in a one-to-one correspondence;

[0031] The first hook and the second hook are capable of clamping the connecting rod when they are close to each other.

[0032] Furthermore, the present invention also provides a grabbing tool, which includes the lattice beam lifting device as described above.

[0033] (3) Beneficial effects

[0034] The beneficial effects of the present invention are:

[0035] The first and second hooks are both curved hooks with internal hook grooves. When the first and second hooks are brought together and closed, their hook grooves overlap to form a receiving chamber, into which the articulated rod is engaged, enabling the lattice girder lifting device to automatically grasp the lattice girder, thereby lifting the lattice girder. When the first and second hooks move away from each other, the receiving chamber opens, allowing the articulated rod to escape from the chamber, enabling the lattice girder lifting device to automatically unload the lattice girder. The lattice girder lifting device can automatically grasp and unload the lattice girder, is simple to operate, and takes less time, thereby improving construction efficiency and reducing safety risks and labor intensity for construction workers.

[0036] The lattice beam fixture is installed on the lattice beam, and the first hook and the second hook can clamp the lattice beam fixture when they are close to each other, that is, the lattice beam fixture is detachably connected to the first hook (and the second hook) to achieve automatic unhooking and unloading. Therefore, after completing one hoisting, the lattice beam fixture can be disassembled and installed on the next lattice beam to be hoisted, thereby achieving the reuse of the lattice beam fixture and saving success cost. Of course, it is also possible to install a plurality of lattice beam fixtures on multiple lattice beams before hoisting to speed up construction efficiency. A plurality of lattice beam fixtures can also be recycled and reused after completing hoisting. By replacing lattice beam fixtures of different specifications, lattice beams of different specifications can be hoisted accordingly, and both can be hoisted by the first hook and the second hook. The lattice beam hoisting device has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the structure of the lattice beam hoisting device under the first working condition of the present invention;

[0038] Figure 2 This is a schematic diagram of the connection between the top support plate, the supporting plate and the gripper of the present invention;

[0039] Figure 3 It is a structural schematic diagram of a lattice girder hoisting device according to a second embodiment of the present invention;

[0040] Figure 4 is a cross-sectional view of a second embodiment of the present invention;

[0041] Figure 5 Schematic diagram of the structure of the lattice beam tooling under the first working condition of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the threaded hole of the present invention;

[0043] Figure 7 This is a schematic diagram of the connection between the long cross beam and the lattice beam tooling of the present invention;

[0044] Figure 8 It is a schematic diagram of the connection between the long cross beam and the lattice beam lifting device of the present invention;

[0045] Figure 9 This is a schematic diagram of the connection between the crossbeam and the lattice beam tooling of the present invention;

[0046] Figure 10 This is a schematic diagram of the connection between the longitudinal beam and the lattice beam tooling of the present invention;

[0047] Figure 11 This is a schematic diagram of the connection between the lattice beam fixture, the gripper and the top support plate of the present invention;

[0048] Figure 12 is a schematic structural diagram of the lattice beam tooling under the second working condition of the present invention;

[0049] Figure 13 Schematic diagram of the connection between the lattice beam fixture and the short cross beam under the second working condition of the present invention;

[0050] Figure 14 Schematic diagram of the connection between the lattice beam hoisting device and the short cross beam under the second working condition of the present invention;

[0051] Figure 15 It is a structural schematic diagram of the grabbing tool of the present invention.

[0052] [Description of Reference Numerals]

[0053] 1: hook; 11: first hook; 12: ear plate;

[0054] 2: grab handle; 21: second hook; 22: top support plate; 23: support plate;

[0055] 3: telescopic drive;

[0056] 4: hinged rod;

[0057] 5: lattice girder fixture; 51: hanger rod; 52: connecting plate; 521: support plate avoidance groove; 522: threaded hole; 53: connecting block; 54: U-shaped clamp; 55: side baffle;

[0058] 61: connecting rod; 62: lifting hook; 63: wire rope; 64: first insertion rod; 65: second insertion rod;

[0059] 71: horizontal beam; 72: short cross beam;

[0060] 81: longitudinal beam; 82: long cross beam;

[0061] 9: Working arm. DETAILED DESCRIPTION

[0062] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0063] 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0064] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0065] In the present invention, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean fixed connection, detachable connection, or integration; "connection" can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] See also Figure 1 and Figure 2The present invention provides a lattice girder hoisting device, comprising a hook 1, a gripper 2, a telescopic drive 3, an articulated rod 4, and a lattice girder fixture 5. The hook 1 is provided with a first hook 11. The gripper 2 is hingedly connected to the hook 1 via an articulated rod 4. The gripper 2 is provided with a second hook 21. One end of the telescopic drive 3 is connected to the hook 1, and the other end is connected to the gripper 2. In this embodiment, the telescopic drive 3 is a cylinder. The telescopic drive 3 is capable of driving the second hook 21 to rotate about the axis of the articulated rod 4, so that the first hook 11 and the second hook 21 move away from or toward each other. When the first hook 11 and the second hook 21 move toward each other, they can clamp the lattice girder fixture 5 and perform hoisting. The lattice girder of the present invention is illustrated by taking a crossbeam 71, a short cross beam 72, a longitudinal beam 81, and a long cross beam 82 as examples to illustrate the high adaptability of the lattice girder hoisting device to hoist different types of lattice girders.

[0067] The first hook 11 and the second hook 21 are both in the shape of a curved hook, with a hook groove inside the curved hook. When the first hook 11 and the second hook 21 are close together, the hook grooves of the two are superimposed to form a receiving cavity, and the hinged rod 4 is engaged in the receiving cavity, so that the lattice beam lifting device can automatically grasp the lattice beam, thereby lifting the lattice beam. When the first hook 11 and the second hook 21 are separated from each other, the receiving cavity opens, and the hinged rod 4 can escape from the receiving cavity, so that the lattice beam lifting device can automatically unload the lattice beam. The lattice beam lifting device can automatically complete the grasping and unloading of the lattice beam, is simple to operate, and takes less time, thereby improving construction efficiency and reducing the safety risks and labor intensity of construction workers.

[0068] The lattice beam fixture 5 is installed on the lattice beam, and the first hook 11 and the second hook 21 can clamp the lattice beam fixture 5 when they are close to each other, that is, the lattice beam fixture 5 is detachably connected to the first hook 11 (and the second hook 21), and automatic unhooking and unloading are realized. Therefore, after completing a hoisting operation, the lattice beam fixture 5 can be disassembled and installed on the next lattice beam to be hoisted, so as to realize the reuse of the lattice beam fixture 5 and save success cost. Of course, before hoisting, a plurality of lattice beam fixtures 5 can be correspondingly installed on multiple lattice beams to speed up construction efficiency. A plurality of lattice beam fixtures 5 can also be recycled and reused after completing hoisting. By replacing the lattice beam fixture 5 of different sizes, lattice beams of different sizes can be hoisted accordingly, and both can be hoisted by the first hook 11 and the second hook 21. The lattice beam hoisting device has a wide range of applications.

[0069] In the first embodiment (not shown), a pair of second hooks 21 are positioned below the pair of first hooks 11; the free ends of the pair of second hooks 21 and the pair of first hooks 11 are capable of abutting one-to-one. The volume of the accommodating cavity in this embodiment is constant, providing strong clamping stability for the articulated rod 4. Of course, for articulated rods 4 with different outer diameters, the second hooks 21 and first hooks 11 can operate in two clamping conditions: fully closed and partially closed.

[0070] In the second embodiment, as Figure 3 and Figure 4 As shown, a pair of second hooks 21 are arranged on the inner side of a pair of first hooks 11. The second hooks 21 under this embodiment can be rotated relative to the first hooks 11, that is, the second embodiment can further clamp after the second hooks 21 and the first hooks 11 of the first embodiment abut against each other, thereby reducing the volume of the accommodating cavity. The advantage of the second embodiment is that it is more adaptable to articulated rods 4 with different outer diameters, especially for articulated rods 4 with smaller outer diameters. Moreover, as the volume of the accommodating cavity gradually decreases, the second hooks 21 can synchronously drive the articulated rods 4 to rise synchronously, thereby adjusting the inclination angle of the lattice beam, thereby reducing the configuration requirements of the rear-end lattice beam angle adjustment device, or even replacing it.

[0071] It should be noted that the articulated rod 4 does not need to completely fill the accommodating cavity; it is sufficient as long as the accommodating cavity can limit the articulated rod 4 and prevent it from falling out during lifting. This is because the lattice girder itself is heavy, and during lifting, the articulated rod 4 must be tightly abutted within the hook groove of the second hook 21. Therefore, the accommodating cavity has sufficient space to adjust the lifting angle of the articulated rod 4. The specific size of the accommodating cavity can be set according to the size of the articulated rod 4 and the actual angle adjustment requirements.

[0072] Furthermore, the lattice girder hoisting device also includes a top support plate 22 and a support plate 23; the top support plate 22 is connected to the gripper 2 and is positioned below the gripper 2; the support plate 23 is connected to the top support plate 22 and is positioned toward the lattice girder fixture 5. The top support plate 22, support plate 23, and gripper 2 move synchronously. During hoisting, the support plate 23 abuts against the lattice girder to limit the lattice girder's swing during the hoisting process, that is, to limit the lattice girder's rotation about the axis of the hinge rod 4, thereby improving the stability of the hoisting. In this embodiment, the support plate 23 is a concave plate, and the lattice girder can be clamped inside the support plate 23 to limit the lattice girder's swing in the axial direction of the hinge rod 4, further enhancing the swing-limiting ability of the support plate 23. The top support plate 22 and support plate 23 are primarily used for shorter lattice girder such as the short cross beam 72 to assist the lattice girder fixture 5 in hoisting the lattice girder.

[0073] See also Figure 5The lattice beam tooling 5 includes a suspension rod 51, a connecting plate 52, a pair of connecting blocks 53 and a plurality of U-shaped clamps 54; the connecting block 53 is connected to the suspension rod 51, and the other end is connected to the connecting plate 52; the pair of connecting blocks 53 are arranged at both ends of the suspension rod 51 in a one-to-one correspondence to suspend the suspension rod 51 in the air, so as to facilitate the grabbing of the gripper 2; the first hook 11 and the second hook 21 can clamp the suspension rod 51 when they are close to each other; the two free ends of the U-shaped clamp 54 are threadedly connected to the connecting plate 52. Specifically, the U-shaped clamp 54 can be tied to the lattice beam, or the U-shaped clamp 54 can be partially embedded in the lattice beam and integrally cast. The two free ends of the U-shaped clamp 54 are provided with threads, and the free ends of the U-shaped clamp 54 can be connected to nuts after passing through the connecting plate 52 to achieve the fixation of the connecting plate 52 and the U-shaped clamp 54, so that the gripper 2 can simultaneously lift the lattice beam when lifting the suspension rod 51. Furthermore, after the lattice beam is hoisted to a designated location, the lattice beam tooling 5 can be dismantled and recycled for reuse, thereby saving construction costs.

[0074] In the first working condition, the lattice girder fixture 5 further includes a pair of side baffles 55; the side baffles 55 are vertically arranged on the top surface of the connecting plate 52; the connecting plate 52 is provided with a support plate avoidance groove 521; the support plate avoidance groove 521 is arranged between the pair of side baffles 55. The spacing between the side baffles 55 is set as required so that the bottom end of the gripper 2 can be stuck between the pair of side baffles 55 to improve the lifting stability. It should be noted that, see Figure 7 and Figure 8 For a long lattice beam such as the long cross beam 82, its center of gravity is located at the head of the lattice beam fixture 5, that is, on the side away from the lattice beam fixture 5. Therefore, during the hoisting process, the long cross beam 82 is affected by its center of gravity, and the tail of the long cross beam 82 can abut against the bottom of the gripper 2 to limit the rotation of the long cross beam 82 around the hinge rod 4. Therefore, for the lattice beam fixture 5 in the first working condition, the top support plate 22 and the support plate 23 do not need to be provided, and there is no need to provide the support plate avoidance groove 521, which simplifies the structure of the lattice beam hoisting device. Figure 9 and Figure 10 As shown, when the crossbeam 71 and the longitudinal beam 81 are hoisted, taking the crossbeam 71 as an example, the lattice beam tooling 5 is installed at the center position of the crossbeam 71, and the center of gravity of the crossbeam 71 also falls at the center position, so the gripper 2 can be directly hoisted.

[0075] Of course, see Figure 11 The lattice beam tooling 5 under the first working condition can also be provided with a top support plate 22 and a support plate 23 for auxiliary lifting. The top support plate 22 and the support plate 23 under this working condition are mainly used to support the lattice beam, and avoid air through the support plate air avoidance groove 521, which can effectively reduce the force of the lattice beam on the U-shaped clamp 54, improve the stability during lifting and transportation, and at the same time cooperate with the gripper 2 to adjust the lifting angle of the articulated rod 4.

[0076] See again Figure 1 The hook 1 is equipped with a lug 12, which is connected to the side guard 55 via a safety pin. Once connected, the lug 12 and side guard 55 limit the rotation of the lattice girder assembly 5 about the hinge rod 4, further improving lifting stability. The safety pin connection facilitates quick assembly and disassembly of the lug 12 and side guard 55.

[0077] like Figure 5 and Figure 6 As shown, the connecting plate 52 has multiple pairs of threaded holes 522 formed perpendicular to the axis of the boom 51. U-shaped clamps 54 are connected to the threaded holes 522 via nuts. Each pair of threaded holes 522 can be connected to the U-shaped clamps 54 to adjust the spacing between the two pairs of U-shaped clamps 54, improving the adaptability of the hoisting of lattice girders of different sizes.

[0078] In the second case, see Figure 12 and Figure 13 The lattice beam tooling 5 includes a connecting rod 61, a pair of lifting hooks 62, a pair of steel wire ropes 63, multiple first plug rods 64 and multiple second plug rods 65; one end of the lifting hook 62 is connected to multiple first plug rods 64, and the other end is connected to the connecting rod 61. The connecting rod 61 is equivalent to the lifting rod 51 and is used for lifting the gripper 2; a pair of lifting hooks 62 are arranged at both ends of the connecting rod 61 in a one-to-one correspondence; one end of the steel wire rope 63 is connected to the connecting rod 61, and the other end is connected to multiple second plug rods 65; a pair of steel wire ropes 63 are arranged on the inner side of a pair of lifting hooks 62 in a one-to-one correspondence, and the lifting hooks 62 can effectively limit the axial movement of the steel wire rope 63 on the connecting rod 61; the first hook 11 and the second hook 21 can clamp the connecting rod 61 when they are close to each other. Since the short cross beam 72 is relatively short, the lattice beam fixture 5 is often difficult to connect under the first working condition. Therefore, the present invention connects the two ends of the short cross beam 72 through a steel wire rope 63 and lifts it through a connecting rod 61, thereby improving the adaptability of the lattice beam fixture 5 to the lifting of the short cross beam 72. Specifically, the first plug rod 64 (and the second plug rod 65) and the lattice beam can be plugged in on-site or cast into one piece. A plurality of sockets are provided on the lifting hook 62, and the first plug rod 64 is plugged into the socket and anchored into one end of the short cross beam 72 to achieve the fixation of the lifting hook 62 and the short cross beam 72; a plurality of plug holes are provided on the other end of the short cross beam 72, and the second plug rod 65 is plugged into the plug hole, which can not only improve the connection strength between the lattice beam fixture 5 and the short cross beam 72, but also improve the adaptability to short cross beams 72 of different thicknesses.

[0079] In addition, if Figure 14As shown, due to the short size of the short cross beam 72, it is difficult for the short cross beam 72 to abut against the bottom end of the gripper 2, and therefore it is easy to rotate around the hinge rod 4 during the lifting process. The present invention uses the top support plate 22 and the supporting plate 23 as auxiliary tooling for the lattice beam tooling 5, so that the supporting plate 23 can abut against one end of the short cross beam 72, thereby limiting the rotation of the short cross beam 72 around the hinge rod 4 and improving the lifting stability.

[0080] In addition, if Figure 15 As shown, the present invention also provides a grabbing tool, which includes the above-mentioned lattice beam lifting device. In this embodiment, the crane uses a lattice trolley, and the lattice beam lifting device is installed at the end of the working arm 9 of the grabbing tool through a pin shaft. The grabbing tool integrates functions such as sliding, lifting and rotating, and can drive the lattice beam lifting device to perform more abundant actions to meet construction needs. The lattice trolley has multiple functions such as grooving, ditch clearing and lattice beam installation. The grabbing tool is one of the working devices of the lattice trolley and can be quickly replaced with other working devices, which expands and improves the functions of the lattice trolley and improves the efficiency of the overall mechanized construction.

[0081] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A lattice beam hoisting device, characterized in that: The lattice beam lifting device comprises a hook (1), a gripper (2), a telescopic driver (3), a hinged rod (4) and a lattice beam tooling (5); The hook (1) is provided with a first hook (11); The gripper (2) and the hook (1) are hingedly connected via a hinged rod (4); a second hook (21) is provided on the gripper (2); One end of the telescopic driver (3) is connected to the hook (1), and the other end is connected to the gripper (2); The telescopic driver (3) is capable of driving the second hook (21) to rotate around the axis of the hinged rod (4) so ​​as to move the first hook (11) and the second hook (21) away from or closer to each other; The first hook (11) and the second hook (21) are capable of clamping the lattice beam fixture (5) when they are close to each other; The lattice beam fixture (5) comprises a suspension rod (51), a connecting plate (52), a pair of connecting blocks (53) and a plurality of U-shaped clamps (54); the connecting block (53) is connected to the suspension rod (51), and the other end is connected to the connecting plate (52); the pair of connecting blocks (53) are arranged at both ends of the suspension rod (51) in a one-to-one correspondence; the first hook (11) and the second hook (21) can clamp the suspension rod (51) when they are close to each other; the two free ends of the U-shaped clamp (54) are threadedly connected to the connecting plate (52); The lattice beam tooling (5) includes a connecting rod (61), a pair of lifting hooks (62), a pair of steel wire ropes (63), a plurality of first plug rods (64) and a plurality of second plug rods (65); one end of the lifting hook (62) is plugged with a plurality of the first plug rods (64), and the other end is connected to the connecting rod (61); the pair of lifting hooks (62) are arranged at both ends of the connecting rod (61) in a one-to-one correspondence; one end of the steel wire rope (63) is connected to the connecting rod (61), and the other end is plugged with a plurality of the second plug rods (65); the pair of steel wire ropes (63) are arranged on the inner side of the pair of lifting hooks (62) in a one-to-one correspondence; the first hook (11) and the second hook (21) can clamp the connecting rod (61) when they are close to each other.

2. The lattice beam hoisting device according to claim 1, characterized in that: The pair of second hooks (21) are arranged below the pair of first hooks (11); the free ends of the pair of second hooks (21) and the pair of first hooks (11) can abut against each other in a one-to-one correspondence.

3. The lattice beam hoisting device according to claim 1, characterized in that: A pair of the second hooks (21) are arranged on the inner side of the pair of the first hooks (11).

4. The lattice beam hoisting device according to any one of claims 1 to 3, characterized in that: The lattice beam hoisting device further includes a top support plate (22) and a supporting plate (23); The top support plate (22) is connected to the gripper (2) and is arranged below the gripper (2); The supporting plate (23) is connected to the top supporting plate (22) and is arranged toward the lattice beam tooling (5).

5. The lattice beam hoisting device according to claim 1, characterized in that: The lattice beam fixture (5) further includes a pair of side baffles (55); The side baffle (55) is vertically arranged on the top surface of the connecting plate (52); A support plate avoidance groove (521) is provided on the connecting plate (52); the support plate avoidance groove (521) is arranged between a pair of side baffles (55).

6. The lattice beam hoisting device according to claim 5, characterized in that: The hook (1) is provided with an ear plate (12); The ear plate (12) is connected to the side baffle (55) via a safety pin.

7. The lattice beam hoisting device according to claim 1, characterized in that: Along a direction perpendicular to the axis of the suspension rod (51), the connecting plate (52) is provided with a plurality of pairs of threaded holes (522); The U-shaped clamp (54) is connected to the threaded hole (522) via a nut.

8. A gripping tool, characterized in that: The grabbing tool comprises the lattice beam lifting device according to any one of claims 1-7.

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