Double-joist hoisting equipment

Abstract

The utility model relates to double-joist hoisting equipment, and relates to the field of double-joist production, the double-joist hoisting equipment comprises a hoisting plate used for being connected with a hoisting machine, the bottom surface of the hoisting plate is slidably connected with two mounting blocks, and the hoisting plate is connected with a driving mechanism for driving the two mounting blocks to move close to each other or away from each other; a hoisting chain is mounted on each mounting block, and a hook is fixedly connected to the lower end of each hoisting chain. The double-joist hoisting device has the effect that the hoisting device can conveniently hoist the double joists well.

Description

Technical Field

[0001] This application relates to the field of double-beam manufacturing, and more particularly to a double-beam hoisting device. Background Technology

[0002] A joist is a common structural component in the construction and engineering fields, primarily used in bridges, large buildings, or industrial facilities. The most commonly used joist in related technologies is the double joist, which typically consists of two parallel H-beams connected by bolt assemblies.

[0003] After the double-support beams are manufactured, multiple double-support beams are usually bundled together using strapping. The bundled double-support beams are then lifted and transported to the required location using hoisting equipment, which includes two lifting hooks. Multiple double-support beams are typically bundled at both ends using strapping, with one lifting hook corresponding to one strapping. Each lifting hook is then hooked to its corresponding strapping.

[0004] However, the distance between the two lifting hooks in the hoisting equipment is generally a fixed value. When the distance between the two binding straps used to bind multiple double beams is greater than or less than the distance between the two lifting hooks, the hoisting equipment cannot effectively hoist the double beams. Utility Model Content

[0005] To facilitate the lifting of double-beams by hoisting equipment, this application provides a double-beam hoisting device.

[0006] The double-beam hoisting equipment provided in this application adopts the following technical solution:

[0007] A double-beam hoisting device includes a hoisting plate for connection with a crane. Two mounting blocks are slidably connected to the bottom surface of the hoisting plate. A drive mechanism is connected to the hoisting plate to drive the two mounting blocks to move closer to each other or away from each other. A hoisting chain is installed on each mounting block, and a hook is fixedly connected to the lower end of each hoisting chain.

[0008] By adopting the above technical solution, the driving mechanism drives the two lifting plates to move closer to or further away from each other, thereby adjusting the distance between the two lifting chains. This facilitates the adaptation of the two straps at different distances, allowing each hook to be engaged with the corresponding strap, which makes it easier for the lifting equipment to lift the double support beams.

[0009] Preferably, the drive mechanism includes two fixed blocks fixed to the bottom surface of the hoisting plate, and a bidirectional lead screw is rotatably connected between the two fixed blocks. The bidirectional lead screw passes through the two mounting blocks and is threadedly connected to each mounting block. A drive motor for driving the bidirectional lead screw to rotate is connected to one of the fixed blocks.

[0010] By adopting the above technical solution, the drive motor is started, which drives the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw causes the two mounting blocks to move towards or away from each other, thereby driving the two lifting chains and the two hooks to move.

[0011] Preferably, each of the mounting blocks is connected to a fall protection mechanism, which includes a fall protection rope connected to the mounting hole, and a fall protection hook is fixedly connected to the lower end of the fall protection rope.

[0012] By adopting the above technical solution, each anti-fall hook is used to attach to the corresponding strapping, thereby limiting the possibility of the lifting chain breaking unexpectedly and causing the strapped double support beam to fall.

[0013] Preferably, the fall arrest mechanism includes a fall arrest box fixedly connected to one side of the mounting block. A spool is rotatably connected inside the fall arrest box. A disc torsion spring is sleeved on one end of the spool. One end of the disc torsion spring is fixed to the spool, and the other end is fixed to the inner wall of the fall arrest box. One end of the fall arrest rope is wound around the spool and its end is fixedly connected to the spool. A through hole is opened in the bottom wall of the fall arrest box. The fall arrest rope is inserted into the through hole. When the torsion spring is in its normal state, the fall arrest hook and the hook are at the same horizontal height.

[0014] By adopting the above technical solution, when the lifting chain unexpectedly breaks, the bundled double support beams fall and pull on the anti-fall hook and anti-fall rope. At this time, the spool unwinds the anti-fall rope until it is wound to its maximum extent. The anti-fall hook stops falling and pulls on the double support beams to stop falling as well. When the lifting chain does not break, one end of the anti-fall rope is wound onto the spool, keeping the anti-fall rope taut and reducing the possibility of the anti-fall rope getting tangled or accidentally snagged on other parts of the rope.

[0015] Preferably, the fall arresting rope is a steel wire rope.

[0016] By adopting the above technical solution, the strength of the fall arrest rope was improved.

[0017] Preferably, each of the lifting chains is detachably connected to a corresponding mounting block.

[0018] By adopting the above technical solution, it is easy to disassemble and replace the lifting chain.

[0019] Preferably, a receiving block is welded and fixed to the upper end of each of the lifting chains. An installation groove is provided on the upper surface of the receiving block. The installation groove is inserted into the lower end of the installation block. Multiple screws are threadedly connected to the bottom wall and each side wall of the receiving block. Each screw is simultaneously threadedly connected to the installation block.

[0020] By adopting the above technical solution, the connection between the receiving block and the mounting block is relatively firm, and the disassembly and assembly method is relatively simple.

[0021] Preferably, the bottom surface of the hoisting plate is provided with a dovetail groove, and a dovetail block is fixedly connected to the upper end of each mounting block, with each dovetail block being slidably connected to the dovetail groove.

[0022] By adopting the above technical solution, when the mounting block moves, the mounting block drives the dovetail block to slide along the dovetail groove, reducing the occurrence of the mounting block detaching from the lifting plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Facilitates easier hoisting of the double support beams by hoisting equipment;

[0025] 2. The fall arrest mechanism prevents the double-beamed harness from falling due to accidental breakage of the hoisting chain;

[0026] 3. Facilitates the disassembly and replacement of the lifting chain. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the hoisting equipment shown in Embodiment 1 of this application.

[0028] Figure 2 This is a schematic diagram illustrating the structure of the fall protection mechanism in Embodiment 1 of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Lifting plate; 11. Dovetail groove; 2. Mounting block; 21. Lifting chain; 22. Hook; 23. Dovetail block; 3. Drive mechanism; 31. Fixing block; 32. Two-way lead screw; 33. Drive motor; 4. Receiving block; 41. Mounting groove; 5. Fall protection mechanism; 51. Fall protection box; 511. Through hole; 52. Borehole; 53. Disc torsion spring; 54. Fall protection rope; 55. Fall protection hook. Detailed Implementation

[0030] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0031] This application discloses a double-beam hoisting device. (Refer to...) Figure 1 and Figure 2 The double-beam hoisting equipment includes a hoisting plate 1, on the bottom surface of which two mounting blocks 2 are slidably connected. A drive mechanism 3 is connected to the hoisting plate 1 to drive the two mounting blocks 2 to move toward each other or away from each other. A hoisting chain 21 is installed on each mounting block 2, and a hook 22 is fixedly connected to the lower end of each hoisting chain 21.

[0032] The bottom surface of the lifting plate 1 has a dovetail groove 11 with an isosceles trapezoidal cross-section. Each mounting block 2 has a dovetail block 23 fixedly connected to its upper end, the shape of which matches the dovetail groove 11. Each dovetail block 23 is slidably connected to the dovetail groove 11. This ensures that the lifting plate 1 and the mounting block 2 will not easily detach during connection, increasing the overall stability of the connection. When the mounting block 2 moves, the dovetail block 23 slides along the dovetail groove 11, reducing the possibility of the mounting block 2 detaching from the lifting plate 1.

[0033] The drive mechanism 3 includes two fixed blocks 31 and a bidirectional lead screw 32 rotatably connected between the two fixed blocks 31. Both fixed blocks 31 are fixed to the bottom surface of the lifting plate 1 by welding or bolting, increasing the overall structural stability when the mounting blocks 2 move. The bidirectional lead screw 32 passes through both mounting blocks 2 and is threadedly connected to each mounting block 2. A drive motor 33 is fixedly connected to one of the fixed blocks 31, and the output shaft of the drive motor 33 passes through the fixed block 31 and is coaxially fixed to one end of the bidirectional lead screw 32.

[0034] Each lifting chain 21 is detachably connected to a corresponding mounting block 2. A receiving block 4 is welded to the upper end of each lifting chain 21. The upper surface of the receiving block 4 has a mounting groove 41, which is inserted into the lower end of the mounting block 2. Multiple screws are threaded onto the bottom wall and each side wall of the receiving block 4. These screws are made of high-strength, fatigue-resistant material, and each screw is simultaneously threaded onto the mounting block 2, increasing the connection strength between the lifting chain 21 and the mounting block 2.

[0035] Reference Figure 1 and Figure 2 Each mounting block 2 is equipped with a fall arrest mechanism 5. The fall arrest mechanism 5 includes a fall arrest box 51 fixedly connected to one side of the mounting block 2, and a fall arrest rope 54. A fall arrest hook 55 is fixedly connected to the lower end of the fall arrest rope 54. A spool 52 is rotatably connected inside the fall arrest box 51. A disc torsion spring 53 is sleeved on one end of the spool 52, with one end of the disc torsion spring 53 fixed to the spool 52 and the other end fixed to the inner wall of the fall arrest box 51. One end of the fall arrest rope 54 is wound around the spool 52 and its end is fixedly connected to the spool 52.

[0036] The bottom wall of the fall arrestor box 51 has a through hole 511, into which the fall arrestor rope 54 is inserted. When the fall arrestor hook 55 and the hook 22 are at the same horizontal height, the disc torsion spring 53 is in normal condition. The fall arrestor rope 54 is a steel wire rope, which increases the strength of the fall arrestor rope 54, prevents breakage in case of accidents, and ensures safety during the hoisting process.

[0037] Each anti-fall hook 55 is attached to the binding rope together with the hook 22. When the lifting chain 21 breaks unexpectedly, the double support beam falls and pulls the anti-fall rope 54 to unwind. When the anti-fall rope 54 is unwinded to its maximum state, the anti-fall hook 55 pulls the binding rope to control the double support beam to stop falling.

[0038] The implementation principle of a double-beam hoisting device according to an embodiment of this application is as follows: When it is necessary to adjust the distance between the two hooks 22, the drive motor 33 is started. The output group of the drive motor 33 drives the bidirectional lead screw 32 to rotate in both directions. The bidirectional lead screw 32 can drive the two mounting blocks 2 to move towards or away from each other. When the distance between the two mounting blocks 2 is equal to the distance between the two straps, the drive motor 33 is turned off, and each hook 22 is hooked with the corresponding strap, and at the same time, each anti-fall hook 55 is hooked with the corresponding strap.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-beam hoisting device, characterized in that: It includes a lifting plate (1) for connection with a crane, two mounting blocks (2) are slidably connected to the bottom surface of the lifting plate (1), and a drive mechanism (3) is connected to the lifting plate (1) to drive the two mounting blocks (2) to move toward each other or away from each other. Each mounting block (2) is equipped with a lifting chain (21), and a hook (22) is fixedly connected to the lower end of each lifting chain (21).

2. The double-beam hoisting equipment according to claim 1, characterized in that: The drive mechanism (3) includes two fixed blocks (31) fixed on the bottom surface of the hoisting plate (1), and a bidirectional lead screw (32) is rotatably connected between the two fixed blocks (31). The bidirectional lead screw (32) passes through the two mounting blocks (2) and is threadedly connected to each mounting block (2). A drive motor (33) for driving the bidirectional lead screw (32) to rotate is connected to one of the fixed blocks (31).

3. The double-beam hoisting equipment according to claim 1, characterized in that: Each of the mounting blocks (2) is connected to a fall arrest mechanism (5), which includes a fall arrest rope (54) connected to the mounting hole, and a fall arrest hook (55) is fixedly connected to the lower end of the fall arrest rope (54).

4. The double-beam hoisting equipment according to claim 3, characterized in that: The fall arrest mechanism (5) includes a fall arrest box (51) fixedly connected to one side of the mounting block (2). A spool (52) is rotatably connected inside the fall arrest box (51). A disc torsion spring (53) is sleeved on one end of the spool (52). One end of the disc torsion spring (53) is fixed to the spool (52), and the other end is fixed to the inner wall of the fall arrest box (51). One end of the fall arrest rope (54) is wound around the spool (52) and the end is fixedly connected to the spool (52). A through hole (511) is opened on the bottom wall of the fall arrest box (51). The fall arrest rope (54) is inserted into the through hole (511). When the disc torsion spring (53) is in normal state, the fall arrest hook (55) and the hook (22) are at the same horizontal height.

5. The double-beam hoisting equipment according to claim 4, characterized in that: The fall arresting rope (54) is a steel wire rope.

6. The double-beam hoisting equipment according to claim 1, characterized in that: Each of the lifting chains (21) is detachably connected to the corresponding mounting block (2).

7. A double-beam hoisting device according to claim 6, characterized in that: Each of the lifting chains (21) has a receiving block (4) welded to its upper end. The upper surface of the receiving block (4) has an installation groove (41) which is inserted into the lower end of the installation block (2). The bottom wall and each side wall of the receiving block (4) are threaded with multiple screws, and each screw is threaded into the installation block (2).

8. The double-beam hoisting equipment according to claim 1, characterized in that: The bottom surface of the hoisting plate (1) is provided with a dovetail groove (11), and the upper end of each mounting block (2) is fixedly connected with a dovetail block (23), and each dovetail block (23) is slidably connected to the dovetail groove (11).

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