A prestressed concrete roof panel combined hoisting system

Abstract

The present invention discloses a combined hoisting system for prestressed concrete roof panels, which relates to the technical field of building construction. The system comprises a balance beam, wherein main lifting ears are provided on the top of the balance beam and are arranged in pairs, and the balance beams are connected by connecting pieces; slide rails elastically slidably arranged at both ends of the balance beam, and the slide rails on the same balance beam can synchronously move in opposite directions; lifting rings elastically slidably arranged in the slide rails; a synchronous driving structure installed between the slide rails and adjacent connecting pieces on the same side, and the synchronous driving structure synchronously adjusts the distance between the two ends of the connecting piece according to the movement distance of the slide rails, and adjusts the distance between the lifting rings on different balance beams; the spacing of the lifting rings can be automatically adjusted by utilizing the gravity of the components to adapt to the hoisting of components of different sizes without manual intervention, thereby reducing the complexity of the operation, and the steel wire ropes connecting the components can be kept vertical to ensure that the components are evenly stressed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a prestressed concrete roof panel combined hoisting system. Background Art

[0002] Prestressed concrete roof panels are a type of building component that is pre-stressed with compressive stress during the production process to improve its crack resistance, rigidity and load-bearing capacity. After the roof panels are assembled on the gable beams of the top floor of the house, the wing panels are overlapped and covered to prevent visible vertical seams between the multiple single box-type roof panels, forming a well-integrated sloping roof.

[0003] During the specific process of roof panel installation, construction workers must rely on specialized lifting structures to safely lift the single roof panel from the ground to the top floor of the building, and then perform precise splicing operations to ensure the integrity and stability of the roof panel. However, due to its fixed design dimensions, the traditional single integrated lifting structure cannot flexibly adapt to the needs of roof panels of different sizes and specifications. This results in the frequent replacement of the lifting structure to match the sizes of different roof panels in actual operations. This not only increases the complexity and labor intensity of construction, but also significantly prolongs the installation period. In addition, during the lifting process, due to the fixed structure of the lifting device, it is difficult to evenly distribute the stress points, which can easily cause cracking of components such as the roof panel due to uneven stress, seriously affecting construction quality and safety.

[0004] Although the emergence of modular lifting structures in recent years has alleviated this problem to some extent, allowing construction workers to adapt to roof panels of different sizes by replacing or adjusting lifting rods, the adjustment process itself is still relatively time-consuming, requiring additional time and human resources. In addition, the size design of roof panels is not arbitrary, but is strictly limited by the specific structural conditions of the roof, such as the position and spacing of roof beams and the layout of other building components. These factors work together to result in the diverse size of roof panels. This dimensional inconsistency further increases the frequency and difficulty of replacing or adjusting the size of the lifting structure, inevitably increasing waiting and adjustment time during the construction process, and ultimately significantly reducing the overall efficiency of roof panel installation operations, affecting project progress and construction quality. Summary of the Invention

[0005] The object of the present invention is to provide a prestressed concrete roof panel combined hoisting system, which can automatically adjust the spacing between hoisting rings to adapt to the hoisting of components of different sizes without manual intervention, thereby reducing the complexity of operation.

[0006] To achieve the above object, the present invention provides the following technical solution: a prestressed concrete roof panel assembled hoisting system, comprising a balance beam, characterized in that: the balance beams are provided with main lifting lugs on the top and are arranged in pairs, and the balance beams are connected by connecting pieces;

[0007] Slide rails are elastically slidably arranged at both ends of the balance beam, and the slide rails on the same balance beam can move synchronously in opposite directions;

[0008] A lifting ring is elastically slidably arranged in the slide rail;

[0009] When the component is lifted, the slide rail can move in the opposite direction synchronously, so that the lifting rope between the lifting ring and the component tends to be vertical, and the gravity of the component is used to adjust the spacing of the lifting rings on the same balance beam in real time;

[0010] The synchronous driving structure is installed between the slide rail and the adjacent connecting member on the same side. According to the movement distance of the slide rail, the distance between the two ends of the connecting member is synchronously adjusted, and the distance between the lifting rings on different balance beams is adjusted.

[0011] As a further solution of the present invention, the slide rail includes:

[0012] Sliding frame, slidingly set at both ends of the balance beam, used to adjust the spacing between the lifting rings on the same balance beam;

[0013] The lifting frame is slidably arranged in the sliding frame through the lifting spring, and the bottom is connected to the lifting ring;

[0014] The locking member is slidably arranged on the side wall of the sliding frame and has a wedge-shaped structure. It can adjust the positive pressure between the locking member and the balance beam as the lifting frame rises and falls.

[0015] As a further solution of the present invention, the connecting piece includes:

[0016] The quick-release head is plugged into both ends of the balance beam, and a pin for limiting is inserted through one end of the balance beam;

[0017] A connecting rod is rotatably arranged at an end of the quick release head away from the latch;

[0018] The connecting piece has two ends which are rotatably arranged on the connecting rod on the same side;

[0019] The synchronous wheels are rotatably arranged at both ends of the connecting piece, and the connecting rod is coaxially fixed with the hinge point of the connecting piece.

[0020] As a further solution of the present invention, the balance beam is rotatably connected to a synchronous gear, the slide rails are fixed with a synchronous rack meshing with the synchronous gear, and a reset spring is installed between the synchronous rack and the balance beam.

[0021] As a further solution of the present invention, the synchronous drive structure includes a synchronous rod, and the synchronous rod is rotatably provided with a mounting plate, and the mounting plate is fixed to the side wall of the slide frame.

[0022] As a further solution of the present invention, the connecting parts are commonly connected with a detachable independent driving structure, the connecting rod is provided with a mounting hole, the synchronization rod is rotatably arranged in the mounting hole by a bolt, and the mounting plate is fixed to the sliding frame by a bolt.

[0023] As a further solution of the present invention, the independent driving structure is a double-headed screw, and both ends of the double-headed screw are threadedly connected to the connecting piece.

[0024] As a further solution of the present invention, the mounting holes are arranged in a linear array on the connecting rod, and the rotation ratio of the connecting rod when moving with the slide rail is adjusted by changing the connecting rod to assemble different mounting holes.

[0025] As a further solution of the present invention, the bottom of each balance beam is threadedly connected to a bracket, and a ball is provided at the bottom of the bracket.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In this invention, the weight of the component itself is utilized to keep the wire rope taut and tend toward a vertical potential energy state. The slide rail moves horizontally along the balance beam to adjust the spacing of the lifting rings along the length of the component, thereby adapting to the lifting requirements of components of different lengths. Simultaneously, the slide rail synchronously adjusts the spacing between the two ends of the connector, changing the distance between the balance beams, and achieving synchronous adjustment of the spacing of the lifting rings along the width of the component to accommodate the lifting of components of different widths. Compared to existing lifting structures, this structure can automatically adjust the spacing of the lifting rings to accommodate the lifting of components of different sizes without the need for manual intervention, thereby reducing operational complexity.

[0028] In the present invention, the steel wire rope between the lifting ring and the component can be kept in a vertical state, and the tension of the steel wire rope on the component is completely used to resist the gravity of the component. There is no lateral force component, which helps to reduce the risk of component deviation and can reduce the local stress of the component lifting point, ensure that the component is evenly stressed, and prevent the component from being deformed during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0031] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0032] Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram;

[0033] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0034] Figure 5 This is a schematic diagram of the hook moving along the length direction of the component when the component is lifted;

[0035] Figure 6 This is a schematic diagram of the hook motion structure adjusted by the independent drive structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the hook motion structure adjustment of the synchronous drive structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the principle of adjusting the hook movement of the synchronous drive structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the cross section of the slide rail and its connection relationship structure of the present invention;

[0039] Figure 10 This is a schematic diagram of the connector and its connection relationship structure of the present invention;

[0040] Figure 11 This is a schematic structural diagram of the slide rail and its connection relationship of the present invention;

[0041] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0042] 1. Balance beam; 11. Main lifting lug; 2. Connector; 21. Quick-release head; 22. Latch; 23. Connecting rod; 24. Connector; 25. Synchronous wheel; 26. Mounting hole; 3. Slide rail; 31. Slide frame; 32. Lifting frame; 33. Lifting spring; 34. Locking part; 4. Synchronous drive structure; 41. Synchronous rod; 42. Mounting plate; 51. Synchronous gear; 52. Synchronous rack; 53. Reset spring; 6. Lifting ring; 7. Independent drive structure; 8. Bracket. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figures 1-11 The present invention provides a technical solution: a prestressed concrete roof panel combined hoisting system, comprising a balance beam 1: main lifting lugs 11 are provided on the top of the balance beam 1 and are arranged in pairs, and the main lifting lugs 11 are connected to the driving wire rope; the balance beams 1 are connected by connectors 2; the connectors 2 are provided at both ends of the balance beam 1, and the balance beam 1 and the connectors 2 together form a rectangular frame;

[0045] Slide rails 3 are elastically slidably arranged at both ends of the balance beam 1, and the slide rails 3 on the same balance beam 1 can move synchronously in opposite directions;

[0046] The lifting ring 6 is elastically slidably arranged in the slide rail 3 and is connected to the wire rope for lifting the PC component;

[0047] When the component is hoisted, the steel wire rope between the component and the lifting ring 6 is gradually straightened. When the steel wire rope connected to the lifting ring 6 is straightened, the balance beam 1 continues to rise. Under the action of the steel wire rope, the slide rail 3 moves in the opposite direction synchronously, so that the lifting rope between the lifting ring 6 and the component tends to be vertical. After the steel wire rope tends to be vertical, the component is hoisted and suspended in the air. The gravity of the component is used to adjust the spacing of the lifting rings 6 on the same balance beam 1 in real time.

[0048] The synchronous drive structure 4 is installed between the slide rail 3 and the adjacent connecting member 2 on the same side. When the slide rail 3 moves, the distance between the two ends of the connecting member 2 changes with the movement of the slide rail 3, thereby achieving synchronous adjustment of the distance between the balance beams 1, that is, the distance between the lifting rings 6 on different balance beams 1;

[0049] In summary, before the component is lifted, the gravity of the component itself is used to make the wire rope taut and tend to a potential energy state in the vertical direction. At this time, the slide rail 3 moves horizontally along the balance beam 1 to adjust the spacing of the lifting ring 6 in the length direction of the component, so as to adapt to the lifting requirements of components of different lengths. At the same time, the slide rail 3 synchronously adjusts the spacing between the two ends of the connector 2, changes the distance between the balance beams 1, and realizes the synchronous adjustment of the spacing of the lifting ring 6 in the width direction of the component to adapt to the lifting of components of different widths. Compared with the existing lifting structure, this structure can automatically adjust the spacing of the lifting ring 6 to adapt to the lifting of components of different sizes without manual intervention, thereby reducing the complexity of the operation. In addition, the wire rope between the lifting ring 6 and the component can maintain a vertical state, and the tension of the wire rope on the component is completely used to resist the gravity of the component. There is no lateral force component, which helps to reduce the risk of component offset and can reduce the local stress of the component lifting point, ensure that the component is evenly stressed, and prevent the component from deforming during the lifting process.

[0050] As a further solution of the present invention, the slide rail 3 includes:

[0051] Sliding frames 31 are slidably arranged at both ends of the balance beam 1 and are used to adjust the spacing between the lifting rings 6 on the same balance beam 1;

[0052] The lifting frame 32 is slidably arranged in the sliding frame 31 through the lifting spring 33, and the bottom is connected to the lifting ring 6;

[0053] The locking member 34 is slidably disposed on the side wall of the sliding frame 31 and has a wedge-shaped structure, which can adjust the positive pressure between the locking member and the balance beam 1 as the lifting frame 32 rises and falls;

[0054] See Figure 1-Figure 3 、 Figure 5 as well as Figure 9 When the steel wire rope connected to the lifting ring 6 is stressed and tightened, the balance beam 1 continues to rise. At this time, the sliding frame 31 is subjected to the tension of the steel wire rope and can move horizontally along the balance beam 1 to adjust the spacing of the lifting ring 6 in the length direction of the component; at the same time, the lifting frame 32 slides vertically along the sliding frame 31 under the tension of the steel wire rope. On the one hand, it increases the spacing between the balance beam 1 and the suspended component, prolongs the movement time of the sliding frame 31, and makes the steel wire rope connected to the lifting ring 6 more vertical; on the other hand, the descent of the lifting frame 32 will press the locking member 34 of the wedge structure, and the locking member 34 then presses the balance beam 1, increasing the positive pressure between the locking member 34 and the balance beam 1. When the component is lifted, the gravity of the component is used to lock the sliding frame 31 and the balance beam 1 to prevent the position of the sliding frame 31 and the lifting ring 6 from changing during the lifting process of the component, avoid the center of gravity of the lifted component from shifting, and ensure the safety of the lifting process; and after the lifted component is lifted to the designated position and supported, the sliding frame 31 and the balance beam 1 are unlocked, further reducing the degree of manual participation and improving the lifting efficiency.

[0055] As a further solution of the present invention, the connecting member 2 includes:

[0056] The quick-release head 21 is plugged into both ends of the balance beam 1, and a latch 22 for limiting is inserted through one end of the balance beam 1;

[0057] The connecting rod 23 is rotatably disposed on the end of the quick-release head 21 away from the latch 22;

[0058] The connecting member 24 has two ends rotatably mounted on the connecting rod 23 on the same side;

[0059] The synchronous wheel 25 is rotatably arranged at both ends of the connecting member 24, and the connecting rod 23 is fixed coaxially with the hinge point of the connecting member 24;

[0060] See Figure 1 、 Figure 6 and Figure 10 , the quick-release head 21 is inserted into the end of the balance beam 1, and the quick-release head 21 is inserted through one end of the balance beam 1 through the latch 22, and the quick-release head 21 is fixed in the through-hole of the balance beam 1 through the latch 22, so that the connecting member 2 can be quickly installed on the balance beam 1, thereby realizing the assembly work of the hoisting structure frame;

[0061] When any connecting rod 23 is pushed by the synchronous drive structure 4, the mutually meshing synchronous wheels 25 can drive the other connecting rod 23 to rotate synchronously in the opposite direction, thereby maintaining the center of gravity of the hoisting structure stable and improving the safety of the hoisting operation;

[0062] During the rotation of the connecting rod 23, the connecting piece 24 will move along the length center line of the lifting structure, and the outer end of the connecting rod 23 will drive the balance beam 1 to move to both sides, thereby adjusting the distance between the balance beam 1 and the lifting ring 6 in the width direction of the component.

[0063] During the adjustment stage of the lifting structure, the operator can adjust the rotation angle of the connecting rod 23 according to the actual lifting requirements and the moving distance of the sliding frame 31 to realize the regulation of the overall layout of the lifting structure. This process not only enhances the flexibility of the lifting operation, but also significantly improves the adaptability to components of different sizes.

[0064] As a further solution of the present invention, the synchronous drive structure 4 includes a synchronous rod 41 that moves along the length direction of the component, and the synchronous rod 41 is rotatably provided with a mounting plate 42, and the mounting plate 42 is fixed to the side wall of the slide frame 31;

[0065] For details, see Figure 1 、 Figure 7 and Figure 8 The movement process of the balance beams 1 moving away from each other is completely opposite to that of the movement process of the balance beams 1 moving towards each other. Here, only the movement of a single balance beam 1 moving away from each other is used for explanation;

[0066] When the sliding frames 31 move away from each other along the length direction of the balance beam 1, the mounting plate 42 moves accordingly, and the outer end of the synchronization rod 41 rises relative to the balance beam 1 and rotates counterclockwise (in degrees). Figure 7 For example, the connecting rod 23 rotates clockwise relative to the balance beam 1. Due to the interaction between the connecting rods 23 at both ends and the restriction of the connecting piece 24, the inner end of the connecting rod 23 can only move along the length direction of the component, while the outer end of the connecting rod 23 drives the balance beam 1 away from each other, so that the spacing of the lifting ring 6 in the width direction of the component is adjusted proportionally according to the movement distance of the sliding frame 31.

[0067] As a further solution of the present invention, the balance beam 1 is rotatably connected to a synchronous gear 51, and the slide rails 3 are each fixed with a synchronous rack 52 that meshes with the synchronous gear 51, and a return spring 53 is installed between the synchronous rack 52 and the balance beam 1;

[0068] For details, see Figure 1 、 Figure 2 and Figure 11 When one of the sliding frames 31 moves, it drives the synchronous rack 52 fixed to it to move synchronously. The synchronous gear 51 rotates and drives the sliding frame 31 on the other side to move synchronously in the opposite direction through the other synchronous rack 52, thereby realizing the synchronous reverse movement of the slide rail 3, ensuring that the center of the component is consistent with the center of the lifting structure, and improving the safety of component lifting.

[0069] As a further solution of the present invention, the connecting member 24 is connected to the detachable independent driving structure 7, the connecting rod 23 is provided with a mounting hole 26, the synchronization rod 41 is rotatably set in the mounting hole 26 by a bolt, and the mounting plate 42 is fixed to the slide frame 31 by a bolt;

[0070] Specifically, the synchronization rod 41 is separated from the connecting rod 23, and the independent driving structure 7 is installed, and the synchronous movement between the sliding frame 31 and the connecting rod 23 is released. When the length and width of the lifting component are not in equal proportions, the spacing of the lifting ring 6 in the width direction of the component can be adjusted separately through the independent driving structure 7, thereby increasing the applicability of the lifting structure and improving the practicality of the lifting structure.

[0071] As a further embodiment of the present invention, the independent drive structure 7 is a double-headed screw, and both ends of the double-headed screw are threadedly connected to the connecting member 24; the threads at both ends of the double-headed screw are opposite, and when the double-headed screw is rotated, the connecting member 24 can move in the opposite direction, and the connecting member 24 can be separated from the double-headed screw by rotating the double-headed screw;

[0072] As a further solution of the present invention, the mounting holes 26 are arranged in a linear array on the connecting rod 23. By changing the connecting rod 23 to assemble different mounting holes 26, the rotation ratio of the connecting rod 23 when moving with the slide rail 3 is adjusted; making it suitable for components with different length and width ratios.

[0073] As a further solution of the present invention, each balance beam 1 is threadedly connected to a bracket 8 at the bottom, and a ball is provided at the bottom of the bracket 8; the bracket 8 can support the balance beam 1, and the ball can reduce the resistance between the balance beam 1 and the ground when the spacing of the balance beam 1 is adjusted, thereby reducing the difficulty of adjusting the size of the lifting system.

Claims

1. A prestressed concrete roof panel assembly hoisting system, comprising a balance beam (1), characterized in that: The balance beams (1) are provided with main lifting lugs (11) on the top and are arranged in pairs, and the balance beams (1) are connected by connecting members (2); Slide rails (3) are elastically slidably arranged at both ends of the balance beam (1), and the slide rails (3) on the same balance beam (1) can move synchronously in opposite directions; A lifting ring (6) is elastically slidably arranged in the slide rail (3); When the component is lifted, the slide rail (3) can move in the opposite direction synchronously, so that the lifting rope between the lifting ring (6) and the component tends to be vertical, and the gravity of the component is used to adjust the spacing of the lifting ring (6) on the same balance beam (1) in real time; A synchronous driving structure (4) is installed between the slide rail (3) and the adjacent connecting member (2) on the same side, and synchronously adjusts the distance between the two ends of the connecting member (2) according to the movement distance of the slide rail (3), thereby adjusting the distance between the hanging rings (6) on different balance beams (1); The connecting member (2) comprises: A quick-release head (21) is plugged into both ends of the balance beam (1), and a latch (22) for limiting is plugged into one end of the balance beam (1); A connecting rod (23) is rotatably arranged at one end of the quick-release head (21) away from the latch (22), and the connecting rod (23) is provided with a mounting hole (26); A connecting member (24), both ends of which are rotatably arranged on the connecting rod (23) on the same side; Synchronous wheels (25) are rotatably arranged at both ends of the connecting member (24), and the connecting rod (23) and the connecting member (24) are coaxially fixed at the hinge point; The slide rail (3) includes a slide frame (31); The synchronous drive structure (4) includes a synchronous rod (41), the synchronous rod (41) is rotatably arranged in the mounting hole (26) by a bolt, and the synchronous rod (41) is rotatably provided with a mounting plate (42), and the mounting plate (42) is fixed to the side wall of the slide frame (31).

2. The prestressed concrete roof panel assembly hoisting system according to claim 1, characterized in that: The sliding frame (31) is slidably arranged at both ends of the balance beam (1) and is used to adjust the spacing between the hanging rings (6) on the same balance beam (1); The slide rail (3) further comprises: A lifting frame (32) is slidably arranged in the sliding frame (31) via a lifting spring (33), and the bottom is connected to the lifting ring (6); The locking member (34) is slidably arranged on the side wall of the sliding frame (31) and has a wedge-shaped structure, and can adjust the positive pressure between the locking member and the balance beam (1) as the lifting frame (32) rises and falls.

3. The prestressed concrete roof panel assembly hoisting system according to claim 1, characterized in that: The balance beam (1) is rotatably connected to a synchronous gear (51), and the slide rails (3) are each fixed with a synchronous rack (52) meshing with the synchronous gear (51), and a return spring (53) is installed between the synchronous rack (52) and the balance beam (1).

4. The prestressed concrete roof panel assembly hoisting system according to claim 1, characterized in that: The connecting member (24) is commonly connected to a detachable independent drive structure (7), and the mounting plate (42) is fixed to the slide frame (31) via bolts.

5. The prestressed concrete roof panel assembly hoisting system according to claim 4, characterized in that: The independent drive structure (7) is a double-headed screw, and both ends of the double-headed screw are threadedly connected to the connecting piece (24).

6. The prestressed concrete roof panel assembly hoisting system according to claim 5, characterized in that: The mounting holes (26) are arranged in a linear array on the connecting rod (23). By changing the connecting rod (23) to assemble different mounting holes (26), the rotation ratio of the connecting rod (23) when moving with the slide rail (3) is adjusted.

7. The prestressed concrete roof panel assembly hoisting system according to claim 1, characterized in that: The bottom of each balance beam (1) is threadedly connected to a bracket (8), and a ball bearing is provided at the bottom of the bracket (8).

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