Reinforcement cage lowering platform

Abstract

The utility model relates to the technical field of building construction, in particular to a reinforcement cage lowering platform. Comprising a base frame, a supporting mechanism is arranged at the bottom of the base frame, a connecting mechanism is arranged at the top of the base frame, a lowering mechanism is installed on the connecting mechanism, and the base frame, the supporting mechanism and the connecting mechanism are fixed through bolts to form a detachable connecting structure convenient to fix. Through the design of bolt fixing, the stability of fixed connection of the base frame, the supporting mechanism and the connecting mechanism is guaranteed, meanwhile, a user can disassemble and assemble the reinforcing cage lowering platform conveniently, the reinforcing cage lowering platform is suitable for construction sites in different environments, limitation generated in the using process is avoided, and through the design, moving and transporting are convenient; therefore, the overall practicability of the device is embodied.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a steel cage lowering platform. Background Art

[0002] During the construction of bridges or high-rise buildings, piling may be required according to the design requirements. The method is to use machine punching and water drilling, then lower the steel cage into the pile hole, and then insert the conduit to pour concrete. The steel cage needs to be divided into multiple parts during the lowering process. When connecting two different steel cages in the vertical direction, the construction workers need to use a construction platform for assistance.

[0003] When the existing device is in use, most of the operations of the existing construction platform device when fixing the steel cage at the lower layer are relatively cumbersome, and the traditional method is used to fix the steel cage. Since there is less contact between the fixed part and the steel cage, high requirements are placed on the bundling and welding quality of the steel cage, which makes the construction workers less efficient when docking two different steel cages, thereby reducing the practicality of the construction platform device.

[0004] Therefore, how to provide a steel cage lowering platform that is easy to fix has become a technical problem to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to provide a steel bar cage lowering platform which is convenient for fixing.

[0006] To achieve the above-mentioned purpose, the utility model provides a steel cage lowering platform, including: a base frame, a supporting mechanism is arranged at the bottom of the base frame, a connecting mechanism is arranged at the top of the base frame, a lowering mechanism is installed on the connecting mechanism, and the base frame is fixed to the supporting mechanism and the connecting mechanism by bolts to form a detachable connecting structure that is easy to fix.

[0007] The maximum combined stress of the base frame σmax=118MPa<215Mpa, and the maximum shear stress max=42MPa<125Mpa, which meet the requirements. The base frame is installed at a designated position outside through the support mechanism, and the base frame is installed with a lowering mechanism through the connecting mechanism, and the steel cage is lowered to the designated position through the lowering mechanism. The bolt-fixed design not only ensures the stability of the fixed connection between the base frame and the support mechanism and the connecting mechanism, but also facilitates the user to disassemble and assemble it. It is suitable for construction sites in different environments, avoiding limitations during use, and such a design is convenient for mobile transportation.

[0008] Preferably, four base frames are arranged in parallel and symmetrically, and all four base frames are rectangular tube columns with specifications of 200*200*10.

[0009] In this design, the internal force of a single rectangular tube column is 68.7KN. The stability calculation length of the steel tube column is considered as one end is fixed and the other end is free; l0 = 2 × H = 2 × 5 = 10m, A = 76cm2, ix = 7.77cm;

[0010] λ=l0 / ix=1000 / 7.77=128.7, according to the table of C-type axial compression members, the stability coefficient φ=0.349;

[0011] The stability of the compression rod is 0.12≤1, which meets the requirements.

[0012] Preferably, the supporting mechanism is a base, and the base is a double main beam, including two side beams and two cross beams, and the connection between the side beams and the cross beams is welded.

[0013] The span of the double-jointed I56 main beam is 12m, and the mid-span deformation is 24mm<(12000 / 400=30mm), which meets the requirements. The welding design ensures the stability of the connection between the side beam and the cross beam.

[0014] Preferably, the connecting mechanism is a connecting frame, the cross section of the connecting frame is a rectangular structure, and a hollow installation space is preset on the connecting frame.

[0015] The span of the connecting frame is 1.8m, and the mid-span deformation (24.7-22.8=1.9mm)<(1800 / 400=4.5mm), which meets the requirements.

[0016] Preferably, the lowering mechanism is an electric hoist, and the electric hoist is installed in a preset installation space on the connecting frame.

[0017] The electric hoist is built in the preset installation space on the connecting frame through the hoist hanging plate using the plate unit. The electric hoist is used to hoist the steel cage. When hoisting the steel cage, there are no less than 4 lifting points. The height of the wire rope is calculated according to the most unfavorable situation. The height is 1.2m (the bracket height is 5m, the minimum height of the hoist is 1.8m, and the single lowering height is 2m). The pile hole diameter is 2.5m. The maximum weight of the steel cage Ptotal = 171KN, and the single lifting point P1 = Ptotal / 4 = 42.75KN. When the steel cage is lowered, the tension of a single steel wire rope is F = P1 / sin45° = 60.47KN. The safety reserve coefficient of the wire rope is 6, Ftotal = 362.8KN. In actual use, the construction wire rope is 6*61 steel wire rope with a tensile strength of 1700Mpa and a diameter of 30mm. The total breaking force ∑S0=520×30×30=468000N, the uneven coefficient Ф is 0.8, P=∑S0Φ=468000×0.8=374.400KN, and the allowable tension of the wire rope P=374.400>362.8, which meets the requirements.

[0018] The beneficial effects of the utility model are:

[0019] When the utility model is in use, the bolt fixing design not only ensures the stability of the fixed connection between the base frame and the supporting mechanism and the connecting mechanism, but also makes it easy for users to disassemble and assemble it. It is suitable for construction sites in different environments and avoids limitations during use. Such a design is also convenient for mobile transportation, thereby reflecting the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a front view structural schematic diagram of the overall specific implementation method of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall top view of the specific implementation method of the utility model;

[0023] Figure 3 This is a specific implementation method of the utility model Figure 1 A in the figure is an enlarged structural diagram.

[0024] Parts Name

[0025] 1. Base frame; 2. Base; 3. Connecting frame; 4. Electric hoist. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. Preferably, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] See also Figures 1 to 3 The utility model provides a steel cage lowering platform, including: a base frame 1, a supporting mechanism is arranged at the bottom of the base frame 1, a connecting mechanism is arranged at the top of the base frame 1, a lowering mechanism is installed on the connecting mechanism, the base frame 1 is fixed to the supporting mechanism and the connecting mechanism by bolts to form a detachable connecting structure that is easy to fix, four base frames 1 are arranged in parallel and symmetrically, and the four base frames 1 are all rectangular tube columns with specifications of 200*200*10, the supporting mechanism is a base 2, the base 2 is a double main beam, including two side beams and two cross beams, and the connection between the side beams and the cross beams is welded, the connecting mechanism is a connecting frame 3, the cross section of the connecting frame 3 is a rectangular structure, and a hollow installation space is preset on the connecting frame 3, the lowering mechanism is an electric hoist 4, and the electric hoist 4 is installed in the preset installation space on the connecting frame 3;

[0029] In this embodiment:

[0030] First, the base 2 is installed at the designated location of the construction site. The double-beam-type base 2 increases the contact area with the outside world, thereby ensuring the stability of the fixed support of the device;

[0031] Secondly, the base frame 1 is installed on the base 2. During installation, the base frame 1 is aligned with the bolt holes preset on the base 2, and bolts are inserted into the bolt holes, thereby ensuring the stability of the connection between the base frame 1 and the base 2;

[0032] Then, the connecting frame 3 is installed on the top of the base frame 1. During installation, the base frame 1 is aligned with the preset bolt holes on the connecting frame 3, and bolts are inserted into the bolt holes, thereby ensuring the stability of the connection between the base frame 1 and the connecting frame 3;

[0033] Finally, the electric hoist 4 is installed in the preset installation space on the connecting frame 3. After the installation is completed, the electric hoist 4 is started and the electric hoist 4 is used to hoist the steel cage.

[0034] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A steel cage lowering platform, comprising: A base frame (1), wherein a supporting mechanism is disposed at the bottom of the base frame (1), a connecting mechanism is disposed at the top of the base frame (1), and a lowering mechanism is mounted on the connecting mechanism, and the base frame (1) is characterized in that the base frame (1) is fixed to the supporting mechanism and the connecting mechanism by bolts to form a detachable connecting structure that is easy to fix.

2. The steel cage lowering platform according to claim 1, characterized in that: Four base frames (1) are arranged in parallel and symmetrically, and the four base frames (1) are all rectangular tube columns with specifications of 200*200*10.

3. The steel cage lowering platform according to claim 1, characterized in that: The supporting mechanism is a base (2), and the base (2) is a double main beam, including two side beams and two cross beams, and the connection between the side beams and the cross beams is welded.

4. The steel cage lowering platform according to claim 1, characterized in that: The connection mechanism is a connection frame (3), the cross section of the connection frame (3) is a rectangular structure, and a hollow installation space is preset on the connection frame (3).

5. The steel cage lowering platform according to claim 1, characterized in that: The lowering mechanism is an electric hoist (4), and the electric hoist (4) is installed in a preset installation space on the connecting frame (3).

Images