Lifting appliance suitable for prestressed hollow slab
By designing a hoist suitable for prestressed hollow slabs, the problem that traditional hoisting methods are difficult to meet construction needs is solved, and hoisting efficiency and safety are improved.
Patent Information
- Application Number
- CN202421048737.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
The traditional prestressed prefabricated hollow plate hoisting method is difficult to meet the growing construction demand, which restricts the progress and quality of the project.
A lifting device suitable for prestressed hollow slabs is designed, including a telescopic main beam, central lifting lugs, outer lifting lugs, clamps and lifting ropes. The clamp automatically falls off through the positioning mechanism and is suitable for hollow slabs of different sizes.
The spreader has a simple structure, easy operation, strong load-bearing capacity, high versatility and applicability, and can automatically fall off without manual intervention, improving hoisting efficiency and safety.
Smart Images
Figure CN222374169U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hangers, in particular to a hanger suitable for prestressed hollow slabs. Background Art
[0002] With the widespread application of prefabricated panel technology in construction projects, prestressed prefabricated hollow slabs, as an important structural material, have become the main choice for modern construction and bridge projects. However, the traditional prestressed prefabricated hollow slab hoisting method has been unable to meet the growing construction needs, restricting the progress and quality of the project. Summary of the invention
[0003] In view of this, the utility model provides a hanger suitable for prestressed hollow slabs, which has the characteristics of simple structure, convenient operation, strong bearing capacity, safety and reliability, and the ability to automatically fall off.
[0004] The utility model solves the above problems through the following technical means:
[0005] The utility model is suitable for the hanging device of the prestressed hollow slab, comprising a main beam with telescopic structures at both ends, two central hanging ears sleeved on the main beam, outer hanging ears arranged at both ends of the main beam, two clamps installed at the lower ends of the two central hanging ears or the two outer hanging ears, and hanging ropes connected to the two central hanging ears or the two outer hanging ears corresponding to the two clamps;
[0006] The main beam includes a central beam, a telescopic beam connected to both ends of the central beam through a socket buckle and movable back and forth along the length direction of the central beam, two central lifting ears are socketed on the central beam, and two outer lifting ears are fixed to the ends of the two telescopic beams;
[0007] The clamp includes a connecting seat connected to the lower end of the central lifting ear or the two outer lifting ears through a positioning pin, two clamp arms hinged on both sides of the connecting seat, symmetrical clamps arranged at the ends of the two clamp arms, and a positioning mechanism installed on the connecting seat for limiting the position of the clamps.
[0008] Preferably, a plurality of docking holes are arranged in an array along the length direction on the center beam and the telescopic beam, the center lifting ear is fixed by inserting a positioning pin into the docking hole on the center beam, and the telescopic beam is fixed in a limited position by inserting a positioning pin into the socket buckle and the corresponding docking hole on the telescopic beam.
[0009] As a further improvement of the above technical solution, the ends of the two clamp arms are connected with safety chains, and the upper ends of the clamp arms are provided with a tray for placing the safety chains.
[0010] As a further improvement of the above technical solution, the bottoms of the inner walls of the two clamps are provided with jaw teeth for clamping into the grooves of the hollow plate.
[0011] As a further improvement of the above technical solution, the upper parts of the inner walls of the two clamps are provided with a plurality of support bolts perpendicular to the clamps.
[0012] Preferably, the positioning mechanism includes a horizontal beam installed on the upper end of the clamp arm through the connecting seat, a rotating shaft arranged between the two ends of the horizontal beam and parallel to the horizontal beam, two locking blocks arranged at the two ends of the rotating shaft, and two locking pins arranged on the two clamp arms and correspondingly matching the two locking blocks.
[0013] Preferably, the locking block is provided with a handle for manually rotating to open or lock the locking block.
[0014] Preferably, the plurality of positioning pins are connected to the sling body via anti-lost ropes.
[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects:
[0016] The utility model is suitable for the hoisting device of prestressed hollow slab. When the size of the hollow slab to be hoisted is small, the two clamps are installed at the lower ends of the two center lifting ears, and the center lifting ears are used as lifting points for hoisting; when the size of the hollow slab to be hoisted is large, the length of the telescopic beam is adjusted according to the size, the two clamps are installed at the lower ends of the two outer lifting ears, and the outer lifting ears are used as lifting points for hoisting. The utility model has a simple structure and is easy to operate. It can be used for hoisting hollow slabs of various sizes, thereby enhancing the versatility and applicability of the hoisting device. Moreover, the position of the lifting point can be adjusted according to the size of the hollow slab, thereby ensuring the safety and reliability of the entire device and having a strong bearing capacity; and a positioning mechanism for limiting the position of the clamp is provided on the clamp. When the hollow slab is hoisted in place and subjected to the upward pressure of the bottom bracket, the two clamp arms are rotated upward to open and are clamped by the positioning mechanism. When the hoisting device is lifted upward, the hoisting device will automatically fall off from the hollow slab. The hoisting device can be directly hoisted away without manual intervention, and the hoisting work of the next hollow slab can be carried out, thereby improving the hoisting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of a hanger suitable for a prestressed hollow slab according to Example 1;
[0018] Figure 2 This is a schematic structural diagram of a hanger suitable for prestressed hollow slabs according to Example 2;
[0019] Figure 3 It is a structural schematic diagram of a clamp of a hanger suitable for a prestressed hollow slab of the utility model;
[0020] Figure 4 It is a structural schematic diagram of a locking block of a hanger suitable for prestressed hollow slabs of the utility model;
[0021] Figure 5 The utility model is a schematic structural diagram of a hoisting device suitable for a prestressed hollow slab during hoisting.
[0022] like Figure 1-Figure 5 , main beam -1, center beam -11, socket buckle -12, telescopic beam -13, docking hole point -14, center lifting ear -2, outer lifting ear -3, clamp -4, connecting seat -41, clamp arm -42, clamp -43, jaw gear -431, support bolt -432, positioning mechanism -44, horizontal beam -441, rotating shaft -442, locking block -443, locking pin -444, handle -445, safety chain -45, pallet -46, lifting rope -5, hollow plate -6. DETAILED DESCRIPTION
[0023] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0024] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.
[0025] Example 1
[0026] The present embodiment will be described in detail below with reference to the accompanying drawings. Figure 1As shown: the hanger suitable for the prestressed hollow slab 6 described in this embodiment includes a main beam 1 with a telescopic structure at both ends, two central lifting ears 2 sleeved on the main beam 1, outer lifting ears 3 arranged at both ends of the main beam 1, two clamps 4 installed at the lower ends of the two central lifting ears 2, and a lifting rope 5 connected to the two central lifting ears 2; the main beam 1 includes a central beam 11, a telescopic beam 13 connected to both ends of the central beam 11 through a sleeve buckle 12 and movable back and forth along the length direction of the central beam 11, the two central lifting ears 2 are sleeved on the central beam 11, and the two outer lifting ears 3 are fixed to the ends of the two telescopic beams 13; as shown Figure 3 As shown: the clamp 4 includes a connecting seat 41 connected to the lower end of the central lifting ear 2 or the two outer lifting ears 3 through a positioning pin, two clamp arms 42 hinged on both sides of the connecting seat 41, symmetrical clamps 43 arranged at the ends of the two clamp arms 42, and a positioning mechanism 44 installed on the connecting seat 41 for limiting the position of the clamp 43.
[0027] The hoisting device suitable for the prestressed hollow slab 6 described in this embodiment has the central lifting ear 2 mounted on the main beam 1, and the positions of the two central lifting ears 2 can be adjusted according to the size of the hollow slab 6 to be lifted. The central lifting ear 2 is used as a lifting point for lifting, which is convenient for lifting hollow slabs 6 of different small sizes, thereby enhancing the versatility and applicability of the hoisting device. The position of the lifting point, that is, the position of the central lifting ear 2, can be adjusted according to the size of the hollow slab 6, thereby ensuring the safety and reliability of the entire device and having a strong bearing capacity; and a positioning mechanism 44 for limiting the position of the clamp 43 is provided on the clamp 4. When the hollow slab 6 is lifted in place and subjected to the upward pressure of the bottom bracket, the two clamp arms 42 are rotated upward to open and are clamped by the positioning mechanism 44. When the hoisting device is lifted upward, the hoisting device will automatically fall off from the hollow slab 6. The hoisting device can be directly lifted away without manual intervention, and the lifting work of the next hollow slab 6 can be carried out, thereby improving the lifting efficiency.
[0028] As a preferred implementation of the above technical solution, a plurality of docking holes 14 are arranged in an array along the length direction on the center beam 11 and the telescopic beam 13, the center lifting ear 2 is fixed by inserting the locating pin into the docking hole 14 on the center beam 11, and the telescopic beam 13 is fixed in a limited position by inserting the locating pin into the socket buckle 12 and the corresponding docking hole 14 on the telescopic beam 13.
[0029] As a further improvement of the above technical solution, Figure 5As shown: the ends of the two clamp arms 42 are connected with safety chains 45, and the upper ends of the clamp arms 42 are provided with a tray 46 for placing the safety chains 45, which adds double insurance on the basis of the original hoisting device design. The bottom of the prefabricated hollow slab 6 is held by the two safety chains 45 at both ends. During the hoisting process, even if the clamps 43 and the prefabricated hollow slab 6 fall off, the two safety chains 45 can still keep the prestressed prefabricated hollow slab 6 stable and prevent it from falling off.
[0030] As a further improvement of the above technical solution, the bottom of the inner wall of the two clamps 43 is provided with a jaw tooth 431 for clamping into the groove of the hollow plate 6, and the upper part of the inner wall of the two clamps 43 is provided with a plurality of support bolts 432 perpendicular to the clamps 43. By adjusting the height of the support bolts 432, the height of the jaw tooth 431 relative to the top surface of the hollow plate 6 can be adjusted to ensure that the jaw tooth 431 is in a position consistent with the groove of the hollow plate 6, so that the hollow plate 6 can be clamped to prevent the hollow plate 6 from falling off, thereby further improving the safety and reliability of lifting.
[0031] Specifically, if Figure 3 , Figure 4 As shown: the positioning mechanism 44 includes a horizontal beam 441 installed on the upper end of the clamp arm 42 through the connecting seat 41, a rotating shaft 442 arranged between the two ends of the horizontal beam 441 and parallel to the horizontal beam 441, and two locking blocks 443 arranged at the two ends of the rotating shaft 442, and two locking pins 444 arranged on the two clamp arms 42 and corresponding to the two locking blocks 443. The locking block 443 is provided with a handle 445 for manually rotating to open or lock the locking block 443. During the lifting process, the positioning mechanism is in a standby state. When the hollow slab 6 is hoisted into place and is subjected to upward pressure from the bottom bracket, the two clamp arms 42 rotate upward and open. During this process, the locking pins 444 located on the two clamp arms 42 lift and rotate the two locking blocks 443 to one side until the locking pins 444 rise to the slot position on the locking blocks 443. The locking blocks 443 rotate and allow the locking pins 444 to be locked in the slots. Subsequently, when the hoist is lifted upward, the hoist will automatically fall off from the hollow slab 6. The hoist can be directly lifted away without manual intervention, and the next hollow slab 6 can be lifted, thereby improving the hoisting efficiency.
[0032] As a preferred implementation of the above technical solution, the plurality of positioning pins are connected to the sling body through anti-lost ropes, thereby preventing the positioning pins from being lost during the disassembly and assembly process.
[0033] Example 2
[0034] The present embodiment will be described in detail below with reference to the accompanying drawings. Figure 2As shown: the hanger suitable for the prestressed hollow slab 6 described in this embodiment includes a main beam 1 with a telescopic structure at both ends, two central lifting ears 2 sleeved on the main beam 1, outer lifting ears 3 arranged at both ends of the main beam 1, two clamps 4 installed at the lower ends of the two outer lifting ears 3, and a lifting rope 5 connected to the two outer lifting ears 3; the main beam 1 includes a central beam 11, a telescopic beam 13 connected to both ends of the central beam 11 through a sleeve buckle 12 and movable back and forth along the length direction of the central beam 11, the two central lifting ears 2 are sleeved on the central beam 11, and the two outer lifting ears 3 are fixed to the ends of the two telescopic beams 13; as shown Figure 3 As shown: the clamp 4 includes a connecting seat 41 connected to the lower end of the central lifting ear 2 or the two outer lifting ears 3 through a positioning pin, two clamp arms 42 hinged on both sides of the connecting seat 41, symmetrical clamps 43 arranged at the ends of the two clamp arms 42, and a positioning mechanism 44 installed on the connecting seat 41 for limiting the position of the clamp 43.
[0035] The sling suitable for the prestressed hollow slab 6 described in this embodiment can adjust the length of the telescopic beam 13 according to the size of the hollow slab 6, install the two clamps 4 at the lower ends of the two outer lifting ears 3, and use the outer lifting ears 3 as lifting points for lifting, which is convenient for lifting hollow slabs 6 of different large sizes, thereby enhancing the versatility and applicability of the sling, and the position of its lifting point, that is, the position of the outer lifting ear 3, changes with the size of the hollow slab 6, thereby ensuring the safety and reliability of the entire device and having a strong bearing capacity; and a positioning mechanism 44 for limiting the position of the clamp 43 is provided on the clamp 4. When the hollow slab 6 is hoisted into place and subjected to the upward pressure of the bottom bracket, the two clamp arms 42 are rotated upward to open and are clamped by the positioning mechanism 44. When the sling is lifted upward, the sling will automatically fall off from the hollow slab 6, and the sling can be directly lifted away without manual intervention to carry out the lifting of the next hollow slab 6, thereby improving the lifting efficiency.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A hanger suitable for prestressed hollow slabs, characterized by: It comprises a main beam with telescopic structures at both ends, two central lifting ears sleeved on the main beam, outer lifting ears arranged at both ends of the main beam, two clamps installed at the lower ends of the two central lifting ears or the two outer lifting ears, and lifting ropes connected to the two central lifting ears or the two outer lifting ears corresponding to the two clamps; The main beam includes a central beam, a telescopic beam connected to both ends of the central beam through a socket buckle and movable back and forth along the length direction of the central beam, two central lifting ears are socketed on the central beam, and two outer lifting ears are fixed to the ends of the two telescopic beams; The clamp includes a connecting seat connected to the lower end of the central lifting ear or the two outer lifting ears through a positioning pin, two clamp arms hinged on both sides of the connecting seat, symmetrical clamps arranged at the ends of the two clamp arms, and a positioning mechanism installed on the connecting seat for limiting the position of the clamps.
2. A hanger suitable for prestressed hollow slab according to claim 1, characterized in that: The center beam and the telescopic beam are provided with a plurality of docking holes in an array along the length direction. The center lifting ear is fixed by inserting a positioning pin into the docking hole on the center beam, and the telescopic beam is fixed in a limited position by inserting a positioning pin into the socket buckle and the corresponding docking hole on the telescopic beam.
3. The hanger for prestressed hollow slab according to claim 1, characterized in that: The ends of the two clamp arms are connected with safety chains, and the upper ends of the clamp arms are provided with a tray for placing the safety chains.
4. The hanger for prestressed hollow slab according to claim 1, characterized in that: The bottoms of the inner walls of the two clamps are provided with jaw teeth for clamping into the grooves of the hollow plate.
5. A hanger suitable for prestressed hollow slab according to claim 4, characterized in that: The upper parts of the inner walls of the two clamps are each provided with a plurality of foot bolts perpendicular to the clamps.
6. The hanger for prestressed hollow slab according to claim 1, characterized in that: The positioning mechanism includes a horizontal beam installed on the upper end of the clamp arm through the connecting seat, a rotating shaft arranged between the two ends of the horizontal beam and parallel to the horizontal beam, two locking blocks arranged at the two ends of the rotating shaft, and two locking pins arranged on the two clamp arms and corresponding to the two locking blocks.
7. A hanger suitable for prestressed hollow slab according to claim 6, characterized in that: The locking block is provided with a handle for manually rotating to open or lock the locking block.
8. The hanger for prestressed hollow slab according to claim 1, characterized in that: The plurality of positioning pin shafts are all connected to the sling body through anti-lost ropes.