A lifting tool for installing the bottom plate of a prestressed concrete steel pipe truss composite slab.

Abstract

This utility model relates to the field of precast building components technology, and discloses a lifting device for installing the bottom plate of a prestressed concrete steel pipe truss composite slab. It includes a crossbeam and two steel wire ropes installed at the top and bottom of the crossbeam. A hook is connected to the top of the crossbeam via the first steel wire rope, and a connecting frame is connected to the bottom of the crossbeam via the first steel wire rope. This utility model forms a stable structure through the combined connection of the first steel wire rope and the first connecting buckle, and the second steel wire rope and the second connecting buckle, ensuring uniform stress distribution on all components during hoisting and avoiding the risk of breakage due to localized stress concentration. The shorter design of the second steel wire rope on one side of the crossbeam (20-30cm shorter) allows the composite slab to automatically tilt during hoisting, ensuring precise alignment of the bottom plate's end reinforcement with the installation support. This avoids repeated adjustments due to insufficient space during horizontal hoisting. The automatic tilting function replaces manual prying adjustments, preventing damage to the edges and corners of the composite slab caused by improper operation and improving the finished product qualification rate.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated building components, specifically a lifting device for installing the bottom plate of a prestressed concrete steel pipe truss composite slab. Background Technology

[0002] Prestressed concrete steel tube frame composite slabs are a type of composite structural component that combines the features of prestressing technology, steel tube frames, and concrete composite. These slabs form a skeleton by embedding steel tube frames within a prestressed concrete slab, which is then laminated with a cast-in-place concrete layer. This design retains the lightweight and high-strength characteristics of traditional composite slabs while significantly improving structural integrity and resistance to deformation.

[0003] The building floor slab is made of prestressed concrete steel pipe truss composite slab. The lifting points of the bottom plate of the composite slab are designed to be symmetrically set. When installing with conventional lifting tools, the bottom plate is basically in a horizontal state. However, since there are reinforcing bars extending from both ends of the bottom plate, the bottom plate cannot be smoothly inserted into the support in a horizontal state. Tools are needed to lift one end of the plate, which will damage the quality of the bottom plate and is labor-intensive and time-consuming. Utility Model Content

[0004] The purpose of this utility model is to provide a lifting device for the bottom plate installation of prestressed concrete steel pipe truss composite slabs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a prestressed concrete steel pipe truss composite slab bottom plate installation hoist, including a crossbeam, and further comprising: A steel wire rope is installed at the top and bottom of the cross frame. The top of the cross frame is connected to a hook via the steel wire rope, and the bottom of the cross frame is connected to a connecting frame via the steel wire rope. Two connecting frames are provided at the bottom of the cross frame, and the connecting frames are perpendicular to the direction of the cross frame. The bottom of the connecting frame is equipped with a second steel wire rope for hoisting the composite plate, and both ends of the first and second steel wire ropes are equipped with connecting components.

[0006] Preferably, two symmetrical steel wire ropes are installed on the top of the crossbeam along its axial direction.

[0007] Preferably, two steel wire ropes, one and two steel wire ropes, are respectively installed at the top and bottom of the connecting frame along its axial direction.

[0008] Preferably, connecting seats are welded to the bottom and top of the cross frame and the connecting frame.

[0009] Preferably, connecting sleeves are provided at both ends of the first and second wire ropes.

[0010] Preferably, the connecting assembly includes a first connecting buckle installed on the outside of the connecting sleeves at both ends of the first wire rope, and a second connecting buckle installed on the top of the second wire rope, wherein a connecting rod is installed inside both the first connecting buckle and the second connecting buckle.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model forms a stable structure by combining steel wire rope one with connecting buckle one and steel wire rope two with connecting buckle two. This ensures that the force on each component is uniform during hoisting, avoiding the risk of breakage caused by local stress concentration. The design of the shorter steel wire rope two on one side of the cross frame (20-30cm shorter) allows the composite plate to tilt automatically during hoisting. The steel bars at the end of the bottom plate can be accurately aligned with the installation support, avoiding repeated adjustments due to insufficient space during horizontal hoisting. The automatic tilting function replaces manual prying and adjustment, avoiding damage to the edges and corners of the composite plate caused by improper operation, and improving the finished product qualification rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the crossbeam of this utility model; Figure 3 This is a schematic diagram of the connecting frame structure of this utility model; Figure 4 This is a schematic diagram of the connecting component structure of this utility model.

[0013] In the diagram: 1. Horizontal frame; 2. Steel wire rope one; 3. Hook; 4. Connecting frame; 5. Connecting assembly; 51. Connecting buckle one; 52. Connecting buckle two; 53. Connecting rod; 6. Steel wire rope two; 7. Connecting seat; 8. Connecting sleeve. Detailed Implementation

[0014] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0015] Please see Figure 1-4 As shown, a lifting device for installing the bottom plate of a prestressed concrete steel pipe truss composite slab includes a crossbeam 1, and further includes: a steel wire rope 2 installed at the top and bottom of the crossbeam 1; a hook 3 is connected to the top of the crossbeam 1 via the steel wire rope 2; a connecting frame 4 is connected to the bottom of the crossbeam 1 via the steel wire rope 2; two connecting frames 4 are provided at the bottom of the crossbeam 1, and the connecting frames 4 are perpendicular to the direction of the crossbeam 1; a second steel wire rope 6 for lifting the composite slab is installed at the bottom of the connecting frame 4; and connecting components 5 are installed at both ends of the steel wire rope 2 and the second steel wire rope 6.

[0016] It should be noted that when hoisting the composite slab of the steel pipe truss, firstly, wire rope 26 is installed at the bottom of the connecting frame 4. Then, the connecting frame 4 is connected and fixed to the bottom of the cross frame 1 via wire rope 12. Next, the top of the cross frame 1 is connected to the hook 3 via wire rope 12. When hoisting the composite slab, the bottom of wire rope 26 is installed on the reinforcing bars on the composite slab. Wire rope 26 at the bottom of the cross frame 1 is symmetrically installed on both sides of the composite slab. The hook 3 is lifted by the equipment to lift the composite slab. Since the wire rope 26 on one side of the cross frame 1 is shorter, one end will automatically lift a certain height when the composite slab is raised, so that the bottom plate presents a certain tilt angle. The reinforcing bars at the end of the bottom plate can smoothly enter the installation support, avoiding damage to the bottom plate.

[0017] Two symmetrical steel wire ropes 1-2 are installed on the top of the cross frame 1 along its axial direction; two steel wire ropes 1-2 and 2-6 are respectively installed on the top and bottom of the connecting frame 4 along its axial direction; the two steel wire ropes 1-2 on the top of the cross frame 1 are symmetrically installed on the top of the cross frame 1, and the tops of the two steel wire ropes 1-2 are close together and hung on the hook 3 of the equipment; two steel wire ropes 1-2 are symmetrically installed on the top of the connecting frame 4, and the upper parts of the two steel wire ropes 1-2 are close together and installed on the bottom of the cross frame 1. (Refer to...) Figure 1 The length of the steel wire rope 2 on the left side of the crossbeam 1 is 20-30cm shorter than that on the right side.

[0018] Connecting seats 7 are welded to the bottom and top of the cross frame 1 and the connecting frame 4; connecting sleeves 8 are provided at both ends of wire rope 1 2 and wire rope 2 6; the connecting assembly 5 includes connecting buckle 1 51 installed on the outside of the connecting sleeves 8 at both ends of wire rope 1 2, and connecting buckle 2 52 installed on the top of wire rope 2 6. Connecting rods 53 are installed inside both connecting buckle 1 51 and connecting buckle 2 52; connecting buckle 1 51 is directly installed on the connecting sleeves 8 at both ends of wire rope 1 2. Connecting buckle 1 51 passes through the connecting sleeves 8 and is then connected to the hook 3 and the connecting seat 7. T-shaped connecting rods 53 are inserted inside both connecting buckle 1 51 and connecting buckle 2 52. A limit head is welded to one end of the connecting rod 53, and the other end is limited by a bolt. The connecting sleeve 8 at the top of wire rope 2 6 is first connected to connecting buckle 2 52, and then connecting buckle 2 52 is connected to connecting buckle 1 51. The direction of wire rope 2 6 is changed by connecting buckle 2 52.

[0019] Working Principle: When hoisting the composite slab of the steel pipe truss, firstly, wire rope 26 is installed on the connecting seat 7 at the bottom of the connecting frame 4 via connecting buckle 2 52 and connecting buckle 1 51. This step ensures a stable connection between wire rope 26 and the connecting frame 4. Next, the connecting frame 4 is connected and fixed to the bottom of the cross frame 1 via connecting buckle 1 51 and wire rope 2. In this way, the connecting frame 4 becomes a bridge between the cross frame 1 and wire rope 26, realizing the initial assembly of the overall structure. Then, the top of the cross frame 1 is connected to the hook 3 via wire rope 2. The hook 3, as the connection point of the hoisting equipment, provides the upward power source for the entire lifting device. When hoisting the composite slab, connecting buckle 1 51 at the bottom of wire rope 26 is installed on the reinforcing bars on the composite slab. This step ensures a stable connection between the composite slab and the lifting device, laying the foundation for subsequent hoisting work. In particular, wire rope 26 at the bottom of the cross frame 1 needs to be symmetrically installed on both sides of the composite slab. This installation method helps maintain the balance of the composite slab during hoisting, preventing it from tilting or overturning. The hoisting equipment lifts the hook 3, raising the entire lifting device along with the composite slab. During the ascent, because the steel wire rope 6 on one side of the crossbeam 1 is shorter (20-30cm shorter than the other side), one end of the composite slab automatically rises to a certain height. This tilted design allows the reinforcing bars at the bottom end of the composite slab to smoothly enter the installation support. This avoids potential collisions or jamming between the reinforcing bars and the support during horizontal hoisting, thus protecting the composite slab from damage.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pre-stressed concrete steel pipe truss composite slab bottom plate installation hoist comprising a crossbar (1), characterized in that, Also includes: A steel wire rope (2) is installed at the top and bottom of the cross frame (1). A hook (3) is connected to the top of the cross frame (1) via the steel wire rope (2). A connecting frame (4) is connected to the bottom of the cross frame (1) via the steel wire rope (2). Two connecting frames (4) are provided at the bottom of the cross frame (1), and the connecting frames (4) are perpendicular to the direction of the cross frame (1). The bottom of the connecting frame (4) is equipped with a second steel wire rope (6) for hoisting the composite plate, and both ends of the first steel wire rope (2) and the second steel wire rope (6) are equipped with connecting components (5).

2. The pre-stressed concrete steel pipe truss composite slab bottom plate installation hoist of claim 1, characterized in that: Two symmetrical steel wire ropes (2) are installed on the top of the cross frame (1) along its axial direction.

3. The pre-stressed concrete steel pipe truss composite slab bottom plate installation hoist of claim 1, characterized in that: Two steel wire ropes, one (2) and two steel wire ropes (6), are respectively installed on the top and bottom of the connecting frame (4) along its axial direction.

4. The pre-stressed concrete steel pipe truss composite slab bottom plate installation hoist of claim 1, characterized in that: Connecting seats (7) are welded to the bottom and top of both the cross frame (1) and the connecting frame (4).

5. The prestressed concrete steel pipe truss composite slab bottom plate installation hoist according to claim 1, characterized in that: Connecting sleeves (8) are provided at both ends of the first (2) and the second (6) wire ropes.

6. The pre-stressed concrete steel pipe truss composite slab bottom plate installation hoist of claim 5, characterized in that: The connecting assembly (5) includes a connecting buckle one (51) installed on the outside of the connecting sleeves (8) at both ends of the wire rope one (2), and a connecting buckle two (52) installed on the top of the wire rope two (6). Both the connecting buckle one (51) and the connecting buckle two (52) have connecting rods (53) installed inside.

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