Lifting appliance capable of superposing prefabricated floor slabs
By designing a multi-point support hook tightening spreader, the supporting plate, inclined panel and spring on the locking head are used to cooperate, and the problem of unstable hook anchoring in the stacked floor slab hoisting is solved, achieving the effect of stable lifting.
Patent Information
- Application Number
- CN202422085273.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When lifting the stacked floor slabs, the hooking method is unstable, and it is easy to fall off during the transfer process.
A spreader that can stack prefabricated floor slabs is designed, and the stacked floor slabs are supported by multiple evenly distributed locking heads to ensure stable lifting. The specific implementation method is to drive the sliding rod and circular plate to move through the cooperation of the support plate, inclined panel and spring on the locking head, and expand the locking head to firmly fit at the bottom of the floor.
Through multi-point support hook tightening, the problem of easy fall off of traditional spreaders is solved, and the stable lifting of overlapping floor slabs is achieved.
Smart Images
Figure CN223016250U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting tools, in particular to a lifting tool for superposable precast floor slabs. Background Art
[0002] A superposed floor slab is an assembled integral floor slab formed by superposing a precast slab and cast-in-place reinforced concrete, and is internally provided with truss steel bars or embedded lifting hooks, and is hoisted by a tower crane during the construction process.
[0003] When the existing lifting tool hoists the superposed floor slab, the anchoring method of the hook is unstable and is prone to falling off during the transfer process.
[0004] In view of the above problems, the utility model provides a lifting tool for superposable precast floor slabs. Content of the Utility Model
[0005] The purpose of the utility model is to provide a lifting tool for superposable precast floor slabs, which hooks and supports the superposed floor slab at multiple points through a plurality of uniformly distributed locking heads to ensure stable hoisting and solve the problem of traditional hook detachment, thereby solving the problems in the background art.
[0006] To achieve the above purpose, the utility model provides the following technical solution: A lifting tool for superposable precast floor slabs, which is applied to superposed floor slabs, includes four locking heads. Inside the upper end of the locking head, there are a number of uniformly distributed support plates. On one side of the bottom end of the support plate, an inclined panel is fixedly provided. On one side of the inclined panel, a spring is provided. Inside the locking head, a circular groove is opened. Inside the circular groove, a circular plate is provided. The circular plate is located between a number of inclined panels. In the middle of the circular plate, a sliding rod is fixedly provided. In the middle of the inner top surface of the circular groove, a threaded hole is opened. In the middle of the upper end of the locking head, a second steel rope is fixedly provided. The upper ends of the second steel ropes intersect and are fixedly provided with a first steel rope. The upper end of the first steel rope is connected to the hook of the tower crane. Hoisting holes are opened at the four corners of the superposed floor slab.
[0007] Further, a number of uniformly distributed first sliding grooves are opened at the upper end of the locking head. On the inner bottom surface of the first sliding groove, a second sliding groove is opened. The second sliding groove is communicated with the inside of the circular groove. The support plate is slidably connected to the inner surface of the first sliding groove. The inclined panel is slidably connected to the inner side of the second sliding groove. A fixing rod is fixedly connected to the side wall of the second sliding groove. The inclined panel is slidably connected to the outside of the fixing rod. A spring is tightly connected between the inclined panel and the side wall of the second sliding groove. The spring is sleeved on the outside of the fixing rod.
[0008] Further, the bottom end of the sliding rod is fixedly connected with a handle. The upper end of the sliding rod is threadedly connected to the inside of the threaded hole. The circular plate is in contact connection with the inclined surface of the inclined panel. The sliding rod is slidably connected to the middle of the bottom end of the circular groove.
[0009] Further, the outside of the handle is processed with anti-slip threads.
[0010] Furthermore, a number of uniformly distributed limiting grooves are provided at the bottom end of the lifting hole. The outward extending part of the support plate is engaged with the inner side of the limiting groove, and the outer side of the locking head is slidably connected with the inner side of the lifting hole.
[0011] Furthermore, the support plate is located in the first sliding groove in the initial state.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] A lifting tool for superposable precast floor slabs provided by the present utility model passes four locking heads downward through the lifting holes, and then manually presses the sliding rod upward, so that the sliding rod drives the circular plate to move upward relative to the locking head. The circular plate moves and simultaneously extrudes the inclined surfaces of a number of inclined panels. The inclined panels are extruded to drive the support plates to move away from each other synchronously and compress the springs. Then, the sliding rod is rotated so that its upper end is tightened in the threaded hole, and the support plates are limited. At this time, the locking heads are expanded, and the second steel ropes are tightened by the tower crane. The expanded locking heads are firmly attached to the bottom end of the superposed floor slab. At this time, stable hoisting can be carried out. The circular plate moves downward, and under the push of the spring's restored deformation, the support plates are received inside the locking heads. The locking heads are taken out of the lifting holes to remove the lifting tool. The purpose of such a design is to support and hook the superposed floor slab at multiple points through a number of uniformly distributed locking heads to ensure stable hoisting and solve the problem of traditional hook detachment. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 is a schematic diagram of the position of the limiting groove in the present utility model;
[0016] Figure 3 is a schematic diagram of the external structure of the locking head in the present utility model;
[0017] Figure 4 is a schematic diagram of the internal structure of the locking head in the present utility model;
[0018] Figure 5 is a schematic diagram of the structure of the locking head in the present utility model.
[0019] In the figure: 1, superposed floor slab; 2, lifting hole; 3, limiting groove; 4, first steel rope; 5, second steel rope; 6, locking head; 7, first sliding groove; 8, second sliding groove; 9, circular groove; 10, threaded hole; 11, support plate; 12, inclined panel; 13, fixed rod; 14, spring; 15, circular plate; 16, sliding rod; 17, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] To solve the technical problem of how to stably hoist, as Figures 1-5 shown, the following preferred technical solutions are provided:
[0022] A lifting tool for a superposable precast floor slab, which is applied to the superposed floor slab 1, includes four locking heads 6. Inside the upper end of the locking head 6, there are several uniformly distributed support plates 11. On one side of the bottom end of the support plate 11, an inclined panel 12 is fixedly provided. On one side of the inclined panel 12, a spring 14 is provided. Inside the locking head 6, a circular groove 9 is opened. Inside the circular groove 9, a circular plate 15 is provided. The circular plate 15 is located between several inclined panels 12. In the middle of the circular plate 15, a sliding rod 16 is fixedly provided. In the middle of the inner top surface of the circular groove 9, a threaded hole 10 is opened. In the middle of the upper end of the locking head 6, a second steel cable 5 is fixedly provided. The upper ends of the second steel cables 5 intersect and are fixedly provided with a first steel cable 4. The upper end of the first steel cable 4 is connected to the hook of the tower crane. Hoisting holes 2 are opened at the four corners of the superposed floor slab 1.
[0023] Specifically, the four locking heads 6 are passed downward through the hoisting holes 2, and then the sliding rod 16 is manually pressed upward, so that the sliding rod 16 drives the circular plate 15 to move upward relative to the locking head 6. The circular plate 15 moves and simultaneously squeezes the inclined surfaces of several inclined panels 12. The inclined panels 12 are squeezed and drive the support plates 11 to move away from each other synchronously and squeeze the spring 14. Then the sliding rod 16 is rotated so that its upper end is tightened in the threaded hole 10, and the support plates 11 are limited. At this time, the locking head 6 is expanded, the second steel cable 5 is tightened by the tower crane, and the expanded locking head 6 firmly adheres to the bottom end of the superposed floor slab 1. At this time, stable hoisting can be carried out. The circular plate 15 moves downward, and under the push of the spring 14 recovering its deformation, the support plates 11 are received inside the locking head 6, and the locking head 6 can be taken out of the hoisting hole 2 to remove the lifting tool. The purpose of such a design is to support and hook the superposed floor slab 1 at multiple points through multiple uniformly distributed locking heads 6 to ensure stable hoisting and solve the problem of traditional unhooking.
[0024] Furthermore, as Figures 3-5 shown, the following preferred technical solutions are provided:
[0025] At the upper end of the locking head 6, a number of uniformly distributed first sliding grooves 7 are provided. On the inner bottom surface of the first sliding groove 7, a second sliding groove 8 is provided. The second sliding groove 8 is internally connected to the circular groove 9. The support plate 11 is slidably connected to the inner surface of the first sliding groove 7, and the inclined panel 12 is slidably connected to the inner side of the second sliding groove 8. A fixing rod 13 is fixedly connected to the side wall of the second sliding groove 8. The inclined panel 12 is slidably connected to the outer side of the fixing rod 13. A spring 14 is tightly connected between the inclined panel 12 and the side wall of the second sliding groove 8. The spring 14 is sleeved on the outer side of the fixing rod 13. The purpose of such a design is to ensure that the inclined panel 12 drives the support plate 11 to slide outwards or be received inwards under force.
[0026] Further, as Figure 4 and Figure 5 shown, the following preferred technical solutions are provided:
[0027] The bottom end of the sliding rod 16 is fixedly connected with a handle 17. The upper end of the sliding rod 16 is threadedly connected to the inner side of the threaded hole 10. The circular plate 15 is in contact connection with the inclined surface of the inclined panel 12. The sliding rod 16 is slidably connected to the middle of the bottom end of the circular groove 9. The purpose of such a design is to move the sliding rod 16 to drive the circular plate 15 to move and squeeze the inclined panel 12, and fix the position of the circular plate 15 by screwing the sliding rod 16 tightly into the threaded hole 10.
[0028] Further, as Figure 4 shown, the following preferred technical solutions are provided:
[0029] The outer side of the handle 17 is processed with anti-slip threads. The purpose of such a design is to facilitate the movement and rotation of the sliding rod 16.
[0030] Further, as Figures 1-3 shown, the following preferred technical solutions are provided:
[0031] A number of uniformly distributed limiting grooves 3 are provided at the bottom end of the lifting hole 2. The outward extending part of the support plate 11 is engaged with the inner side of the limiting groove 3. The outer side of the locking head 6 is slidably connected to the inner side of the lifting hole 2. The purpose of such a design is to facilitate the hoisting of the laminated floor slab 1 by the engagement between the outward extending part of the support plate 11 and the inner side of the limiting groove 3, and also improve the hoisting stability.
[0032] Further, as Figure 4 and Figure 5 shown, the following preferred technical solutions are provided:
[0033] The support plate 11 is located in the first sliding groove 7 in the initial state. The purpose of such a design is to ensure that the locking head 6 can pass through the lifting hole 2.
[0034] In summary: Pass the four locking heads 6 downward through the hanging holes 2, and then manually press the sliding rod 16 upward, so that the sliding rod 16 drives the circular plate 15 to move upward relative to the locking head 6. The circular plate 15 moves and simultaneously squeezes the inclined surfaces of several inclined plates 12. The inclined plates 12 are squeezed to drive the support plates 11 to move away from each other synchronously and squeeze the springs 14. Then rotate the sliding rod 16 to tighten its upper end in the threaded hole 10. The support plates 11 are limited. At this time, the locking heads 6 are expanded, and the second steel cable 5 is tightened by the tower crane. The expanded locking heads 6 firmly fit against the bottom end of the composite floor slab 1. At this time, stable hoisting can be carried out. The circular plate 15 moves downward, and under the pushing of the springs 14 restoring deformation, the support plates 11 are received inside the locking heads 6. Just take out the locking heads 6 from the hanging holes 2 to remove the lifting tool. The purpose of this design is to support and hook the composite floor slab 1 at multiple points through multiple uniformly distributed locking heads 6 to ensure stable hoisting and solve the problem of traditional unhooking.
[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hanger for a prefabricated stackable floor slab, applied to a stackable floor slab (1), characterized in that: The invention comprises four locking heads (6), wherein a plurality of evenly distributed supporting plates (11) are arranged inside the upper end of the locking head (6), an inclined plate (12) is fixedly arranged on one side of the bottom end of the supporting plate (11), a spring (14) is arranged on one side of the inclined plate (12), a circular groove (9) is provided inside the locking head (6), a circular plate (15) is provided inside the circular groove (9), the circular plate (15) is located between the plurality of inclined plates (12), a sliding rod (16) is fixedly arranged in the middle of the circular plate (15), a threaded hole (10) is provided in the middle of the top surface of the circular groove (9), a second steel rope (5) is fixedly arranged in the middle of the upper end of the locking head (6), the upper end of the second steel rope (5) intersects and is fixedly arranged with a first steel rope (4), the upper end of the first steel rope (4) is connected to a tower crane hook, and hanging holes (2) are provided at the four corners of the composite floor slab (1).
2. A hanger for stackable prefabricated floor slabs according to claim 1, characterized in that: The locking head (6) is provided with a plurality of evenly distributed first slide grooves (7) at the upper end, the inner bottom surface of the first slide groove (7) is provided with a second slide groove (8), the second slide groove (8) is communicated with the inside of the circular groove (9), the support plate (11) is slidably connected to the inner surface of the first slide groove (7), the inclined plate (12) is slidably connected to the inner side of the second slide groove (8), the side wall of the second slide groove (8) is fixedly connected with a fixing rod (13), the inside of the inclined plate (12) is slidably connected to the outer side of the fixing rod (13), a spring (14) is fastened between the inclined plate (12) and the side wall of the second slide groove (8), and the spring (14) is sleeved on the outer side of the fixing rod (13).
3. The hanger for stackable prefabricated floor slab according to claim 1, characterized in that: The bottom end of the slide rod (16) is fixedly connected with a handle (17), the upper end of the slide rod (16) is threadedly connected to the inner side of the threaded hole (10), the circular plate (15) is contacted and connected with the inclined surface of the inclined plate (12), and the slide rod (16) is slidably connected to the middle part of the bottom end of the circular groove (9).
4. A hanger for stackable prefabricated floor slabs according to claim 3, characterized in that: The outer side of the handle (17) is processed with anti-slip patterns.
5. The hanger for stackable prefabricated floor slab according to claim 1, characterized in that: The bottom end of the hanging hole (2) is provided with a plurality of evenly distributed limiting grooves (3); the outwardly extending portion of the support plate (11) is engaged with the inner side of the limiting groove (3); and the outer side of the locking head (6) is slidably connected with the inner side of the hanging hole (2).
6. The hanger for stackable prefabricated floor slab according to claim 2, characterized in that: The support plate (11) is located in the first sliding groove (7) in an initial state.