Fabricated superposed beam and slab construction device

Abstract

The utility model relates to the field of building construction devices, in particular to an assembly type superposed beam and slab construction device which comprises a connector, a lifting lug connected with a crane is installed on the top of the connector, the connector is a component of a square body structure, and two sets of fixing rings are symmetrically welded to the two sides of the connector. Each group of fixing rings comprises two fixing rings, a sling is fixedly connected to any fixing ring, and the tail end of the sling is connected with a lifting head part; the lifting head part comprises a connecting ring directly and fixedly connected with the bottom of the sling, a transverse rod is fixedly installed at the lower position of the outer side of the connecting ring through a supporting rod, side plates are fixedly installed on the end faces of the two ends of the transverse rod, a shaft rod is arranged at the lower position between the two side plates, the outer side wall of the shaft rod is sleeved with a sleeve, and a lifting hook is welded to one side of the outer ring face of the sleeve. A counterweight arm is welded to the other side of the outer ring face of the sleeve, the weight of the counterweight arm is larger than that of the lifting hook, and the automatic unhooking device has the advantages of being automatic in unhooking and high in safety.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment, specifically a prefabricated composite beam and slab construction device. Background Technology

[0002] With the rapid development of the modern construction industry, prefabricated buildings, with their advantages of high efficiency, environmental friendliness, and controllable quality, are being used more and more widely in the construction field. In prefabricated building construction, the installation of composite beams and slabs is a crucial step, and its construction quality and efficiency directly affect the progress and quality of the entire construction project. Efficient and safe hoisting equipment is essential for prefabricated building construction.

[0003] Traditional lifting equipment for composite beam and slab construction mainly consists of hooks, slings, shackles, and connecting components. The hook directly supports the weight of the composite beam and slab, the slings connect the hook to the lifting equipment and transmit tension, and the shackles connect the various components, ensuring the stability of the entire lifting system. However, in actual construction, traditional lifting equipment relies on manual operation of the shackles for release. When working at heights, workers need to manually unhook the shackles in confined and unstable spaces. This not only consumes a significant amount of time and manpower but also poses a considerable safety risk; a slight mistake could lead to a fall or being struck by falling objects. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a prefabricated composite beam and slab construction device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a prefabricated composite beam and slab construction device, including a connector, the top of which is equipped with a lifting lug for connection with a crane. The connector is a square-shaped component. Two sets of fixing rings are symmetrically welded on both sides of the connector, and each set of fixing rings has two rings. A sling is fixedly connected to any one of the fixing rings, and a lifting head is connected to the end of the sling.

[0006] The lifting head includes a connecting ring that is directly fixed to the bottom of the sling. A crossbar is fixedly installed on the lower outer side of the connecting ring via a support rod. Side plates are fixedly installed on both ends of the crossbar. A shaft is set between the two side plates at the lower position. A sleeve is sleeved on the outer wall of the shaft. A hook is welded to one side of the outer ring of the sleeve, and a counterweight arm is welded to the other side of the outer ring of the sleeve. The weight of the counterweight arm is greater than the weight of the hook.

[0007] Specifically, the center of the end of the counterweight arm, the axis of the sleeve, and the center of the hook are not collinear, and the included angle between the lines connecting the three is between 90° and 180°.

[0008] Specifically, the hook has a threaded hole inside, and positioning bolts are symmetrically installed inside the threaded hole.

[0009] Specifically, positioning blocks are symmetrically installed on the side wall of the side plate. The two symmetrically arranged positioning blocks are provided with internal threaded tubes. An adjusting screw is installed inside the internal threaded tubes through threaded engagement. A rotary joint is installed on the end face of the adjusting screw near the counterweight arm. A positioning rope is embedded in the rotary joint. The end of the positioning rope is directly fixed to the outer side wall of the counterweight arm.

[0010] Specifically, a silicone pad is embedded in the end face of the positioning bolt, and anti-slip texture is provided on the end face of the silicone pad.

[0011] Specifically, an adjustment handle is welded to one end face of the adjusting screw facing away from the rotary joint, and the cross-section of the adjustment handle is an isosceles trapezoid.

[0012] Specifically, the inner side of the hook is provided with V-shaped grooves at equal intervals along its path direction.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a prefabricated composite beam and slab construction device. When the composite beam and slab are hoisted to directly above the installation position, the crane is lowered again until the composite beam and slab are lowered onto the support system. Then, the crane operator continues to control its descent a certain distance. After the hook loses the weight of the composite beam and slab, the counterweight arm descends under its own weight, and the hook position deflects back to the initial position and separates from the steel truss of the composite beam and slab. Then, the crane is raised again to complete the automatic separation of the hook from the steel truss of the composite beam and slab. This automatic unhooking method effectively speeds up the assembly efficiency of the composite beam and slab, eliminates the need for manual unhooking by ground construction personnel, improves safety, and reduces the occurrence of construction accidents.

[0015] This utility model discloses a prefabricated composite beam and slab construction device. When the construction worker rotates the adjustment handle, it drives the adjustment screw to rotate in the internal threaded tube. During the rotation, the adjustment screw moves horizontally relative to the internal threaded tube, thereby driving one end of the positioning rope to adjust. This allows for the adjustment of the free swing height of the counterweight arm in its initial state. When assembling composite beams and slabs with steel trusses of different heights, this method allows for automatic unhooking without impacting the top of the composite beam and slab, further improving the construction range and reliability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a front view of the overall structure of this utility model during construction;

[0018] Figure 2 The three-dimensional structural parts of this utility model Figure 1 ;

[0019] Figure 3 The three-dimensional structural parts of this utility model Figure 2 ;

[0020] Figure 4 This utility model Figure 3 A magnified view of a portion of region A in the middle;

[0021] In the diagram: 1. Connector, 2. Sling, 3. Lifting head, 4. Positioning block, 11. Lifting lug, 12. Fixing ring, 31. Shaft, 32. Side plate, 33. Crossbar, 34. Connecting ring, 35. Sleeve, 36. Hook, 37. Counterweight arm, 361. Threaded hole, 362. Positioning bolt, 363. Silicone pad, 41. Internal threaded pipe, 42. Adjusting screw, 43. Rotary joint, 44. Positioning rope, 45. Adjusting handle. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's, operator's, or customary practices. Therefore, these terms are defined based on the entire contents of this specification.

[0024] See Figure 1-4 The prefabricated composite beam and slab construction device of this utility model includes a connector 1. The top of the connector 1 is equipped with a lifting lug 11 that is connected to a crane. The lifting lug 11 is a component made of high-strength steel, which ensures that the wear and tear is small during the connection and operation with the crane.

[0025] The connector 1 is a square-shaped component. Two sets of fixing rings 12 are symmetrically welded on both sides of the connector 1. Each set of fixing rings 12 has two rings. A sling 2 is fixedly connected to any one of the fixing rings 12. The end of the sling 2 is connected to a lifting head 3. That is, there are four lifting heads 3. The composite beam plate is hoisted and assembled through the four lifting heads 3.

[0026] The lifting head 3 includes a connecting ring 34 that is directly fixedly connected to the bottom of the sling 2. Further, a fixing ring is fixedly installed at one end of the sling 2 that is connected to the connecting ring 34, and the fixing ring is then connected to the connecting ring 34. The fixing ring and the connecting ring 34 can be regarded as being in a sleeved state. The relative position between the fixing ring and the connecting ring 34 can be changed with the position of the lifting point to avoid bending at the connection stress point of the sling 2.

[0027] A crossbar 33 is fixedly installed on the lower outer side of the connecting ring 34 via a support rod. Side plates 32 are fixedly installed on both ends of the crossbar 33. A shaft 31 is positioned lower between the two side plates 32. A sleeve 35 is fitted onto the outer wall of the shaft 31. A hook 36 is welded to one side of the outer surface of the sleeve 35, and a counterweight arm 37 is welded to the other side. In the initial state (i.e., before the composite beam is hoisted), because the weight of the counterweight arm 37 is greater than the weight of the hook 36, the integrated component consisting of the sleeve 35, hook 36, and counterweight arm 37 is tilted downwards. This state can be referred to as... Figure 2 and Figure 3 As shown, at this time, the horizontal height of the hook 36 is higher than the center line of the sleeve 35. In specific work, the lifting lug 11 is installed on the crane. The operator controls the crane to drive the lifting head 3 to descend above the composite beam slab. The ground construction personnel manually turn the counterweight arm 37 to drive the sleeve 35 to rotate on the shaft 31, thereby causing the hook 36 to deflect to a position below the center line of the sleeve 35. Then the hook 36 is hung on the steel truss of the composite beam slab. Then the crane is controlled to rise. The inner side of the hook 36 contacts and locks with the steel reinforcement of the composite beam slab, and the composite beam slab is hoisted to the installation position.

[0028] The inner side of the hook 36 is provided with V-shaped grooves at equal intervals along its path direction to increase the contact friction between the inner side of the hook 36 and the steel truss of the composite beam slab.

[0029] When the composite beam is hoisted to the position directly above the installation location, the crane is lowered again until the composite beam is placed on the support system. Then, the crane operator continues to lower it a certain distance. After the hook 36 loses the weight of the composite beam, the counterweight arm 37 descends under its own weight, and the hook 36 returns to its initial position and separates from the steel truss of the composite beam. Then, the crane is raised again to complete the automatic separation of the hook 36 from the steel truss of the composite beam. This automatic unhooking method effectively speeds up the assembly efficiency of the composite beam, eliminates the need for manual unhooking by ground construction personnel, improves safety, and reduces the occurrence of construction accidents.

[0030] During the above construction process, the crane operator can coordinate with the ground personnel through a walkie-talkie (that is, the ground construction personnel can inform the crane operator whether the hook 36 has been disengaged, etc.).

[0031] like Figure 1 As shown, the center of the end of the counterweight arm 37, the axis of the sleeve 35, and the center of the hook 36 are not collinear, and the included angle between the lines connecting the three is between 90° and 180°. The included angle can be referenced... Figure 1 As shown by angle a, under this condition, when the hook 36 deflects to directly below the sleeve 35, the counterweight arm 37 is always located outside the side plate 32 and does not shift to the gap between the two side plates 32.

[0032] In another embodiment, see Figures 2-4 The hook 36 has a threaded hole 361 inside, and positioning bolts 362 are symmetrically installed in the threaded hole 361. Rotating the positioning bolts 362 can adjust their external extension relative to the threaded hole 361. On the one hand, when the positioning bolts 362 are extended out of the threaded hole 361, the hook 36 is deflected to a certain angle and the positioning bolts 362 will abut against the side wall of the side plate 32. That is, the deflection angle of the hook 36 can be positioned by the positioning bolts 362. On the other hand, after the hook 36 is connected to the steel truss of the composite beam slab, the positioning bolts 362 can be rotated so that their end faces abut against the inner side wall of the steel truss of the composite beam slab, increasing the stability of the connection between the hook 36 and the steel truss of the composite beam slab.

[0033] The positioning bolt 362 has a silicone pad 363 embedded in its end face, and the end face of the silicone pad 363 has anti-slip texture. When the positioning bolt 362 moves toward the steel truss of the composite beam slab, the silicone pad 363 will directly contact the inner side of the steel truss of the composite beam slab and deform inward. On the one hand, the silicone pad 363 is a flexible part to reduce damage to the steel truss of the composite beam slab, and on the other hand, it further increases the tightness of the connection with the steel truss of the composite beam slab.

[0034] In another embodiment, see Figures 1-4 The side plate 32 is symmetrically equipped with positioning blocks 4. The two symmetrically arranged positioning blocks 4 are provided with internal threaded tubes 41. An adjusting screw 42 is installed inside the internal threaded tubes 41 through threaded engagement. A rotary joint 43 is installed on the end face of the adjusting screw 42 near the counterweight arm 37. A positioning rope 44 is embedded in the rotary joint 43. The end of the positioning rope 44 is directly fixed to the outer side wall of the counterweight arm 37. The position of the counterweight arm 37 is further limited by the positioning rope 44. When the hook 36 is automatically unhooked, the counterweight arm 37 will not collide with the upper end face of the composite beam plate during the free descent, that is, it will not damage the composite beam plate.

[0035] Meanwhile, an adjustment handle 45 is welded to one end face of the adjusting screw 42 facing away from the rotary joint 43, and the cross-section of the adjustment handle 45 is an isosceles trapezoid. When the construction personnel rotate the adjustment handle 45, the adjusting screw 42 can be rotated in the internal threaded tube 41. During the rotation, the adjusting screw 42 moves horizontally relative to the internal threaded tube 41, thereby driving one end of the positioning rope 44 to adjust. This allows for the adjustment of the free swing height of the counterweight arm 37 in its initial state (i.e., the swing angle of the automatic disengagement can be adjusted). When assembling composite beams and slabs with steel trusses of different heights, this method ensures that the automatic disengagement operation will not impact the top of the composite beams and slabs, further improving the construction range and reliability.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prefabricated composite beam-slab construction device, comprising a connector (1), characterized in that: The top of the connector (1) is equipped with a lifting lug (11) for connection with the crane. The connector (1) is a square-shaped component. Two sets of fixing rings (12) are symmetrically welded on both sides of the connector (1). Each set of fixing rings (12) has two rings. A sling (2) is fixedly connected to any one of the fixing rings (12). The end of the sling (2) is connected to a lifting head (3). The lifting head (3) includes a connecting ring (34) that is directly fixed to the bottom of the sling (2). A crossbar (33) is fixedly installed on the lower outer side of the connecting ring (34) by a support rod. Side plates (32) are fixedly installed on both ends of the crossbar (33). A shaft (31) is provided between the two side plates (32) at the lower position. A sleeve (35) is sleeved on the outer wall of the shaft (31). A hook (36) is welded on one side of the outer ring surface of the sleeve (35). A counterweight arm (37) is welded on the other side of the outer ring surface of the sleeve (35). The weight of the counterweight arm (37) is greater than the weight of the hook (36).

2. The prefabricated composite beam and slab construction device according to claim 1, characterized in that: The center of the end of the counterweight arm (37), the axis of the sleeve (35) and the center of the hook (36) are not collinear, and the angle between the lines connecting the three is between 90° and 180°.

3. The prefabricated composite beam and slab construction device according to claim 1, characterized in that: The hook (36) has a threaded hole (361) inside, and positioning bolts (362) are symmetrically installed inside the threaded hole (361).

4. The prefabricated composite beam and slab construction device according to claim 1, characterized in that: The side plate (32) is symmetrically equipped with positioning blocks (4). The two symmetrically arranged positioning blocks (4) are provided with internal threaded tubes (41). An adjusting screw (42) is installed inside the internal threaded tube (41) through threaded engagement. A rotary joint (43) is installed on the end face of the adjusting screw (42) near the counterweight arm (37). A positioning rope (44) is embedded in the rotary joint (43). The end of the positioning rope (44) is directly fixed to the outer side wall of the counterweight arm (37).

5. The prefabricated composite beam and slab construction device according to claim 3, characterized in that: The end face of the positioning bolt (362) is embedded with a silicone pad (363), and anti-slip texture is provided on the end face of the silicone pad (363).

6. The prefabricated composite beam and slab construction device according to claim 4, characterized in that: The adjusting screw (42) has an adjusting handle (45) welded to one end face facing away from the rotary joint (43), and the cross section of the adjusting handle (45) is an isosceles trapezoid.

7. The prefabricated composite beam and slab construction device according to claim 1, characterized in that: The inner side of the hook (36) is provided with V-shaped grooves at equal intervals along its path direction.

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