Elevation adjusting device for post-installed through-wall cantilever steel beam

Abstract

The utility model discloses an elevation adjusting device for a post-installed through-wall cantilever steel beam, which belongs to the field of building construction equipment and comprises an elevation adjusting support frame and an end elevation adjusting frame. The elevation adjusting supporting frame is arranged below the cantilever steel beam needing to be arranged and comprises a plurality of stand columns, a base and a suspension device. Stand columns are vertically fixed to the base, and a plurality of connecting plates are fixed to each stand column at intervals in the longitudinal direction. Connecting rods are arranged between the adjacent stand columns. A hanging device is fixed to the top of the stand column, and a hanging point used for arranging a lifting device is arranged on the hanging device. An embedded part of the end elevation adjusting frame is fixed to an existing concrete floor through an expansion bolt. A cantilever frame of the end elevation adjusting frame comprises a fixed end fixedly connected with the embedded part and a cantilever end extending outwards, and a hanging point used for arranging a lifting device is arranged at the cantilever end. The lifting devices on the elevation adjusting supporting frame and the end elevation adjusting frame are used for lifting the cantilever steel beam and achieving elevation adjustment of the cantilever steel beam.

Description

Technical Field

[0001] The utility model belongs to the field of construction equipment, and particularly relates to an elevation adjustment device for a post-installed wall-piercing cantilever steel beam. Background Technique

[0002] Due to the change of building use, some steel structure buildings need to install cantilever steel beams after construction. However, the installation and elevation adjustment of cantilever steel beams are difficult, especially for some steel beams that need to pass through the wall and be connected to the original main beam. The conventional construction plan usually is to erect a full hall scaffold for installation. After placing the cantilever steel beam on the scaffold, the elevation adjustment and connection are carried out. This method of erecting the scaffold not only takes a long time but also has a high construction cost. Therefore, there is an urgent need to provide an elevation adjustment device for a post-installed wall-piercing cantilever steel beam. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies in the prior art and provide an elevation adjustment device for a post-installed wall-piercing cantilever steel beam.

[0004] The specific technical solution adopted by the utility model is as follows:

[0005] The utility model provides an elevation adjustment device for a post-installed wall-piercing cantilever steel beam, including an elevation adjustment support frame and an end elevation adjustment frame, wherein the end elevation adjustment frame is arranged on the existing concrete floor;

[0006] The elevation adjustment support frame includes a plurality of columns, a base and a suspension device; the base is arranged below the position where the cantilever steel beam needs to be arranged, and a column is vertically fixed on each base; a plurality of connecting plates are vertically and spacedly fixed on each column along the longitudinal direction; a plurality of connecting rods are arranged between adjacent columns, and two ends of each connecting rod are respectively fixed on the connecting plates of adjacent columns; the bottom of the suspension device is fixed on the top of the column, and a hanging point for arranging a lifting device is arranged at the top of the suspension device;

[0007] The end elevation adjustment frame includes a cantilever frame and an embedded part; the embedded part is fixed on the existing concrete floor; the cantilever frame includes a fixed end fixedly connected with the embedded part and a cantilever end extending outwards; a hanging point for arranging a lifting device is arranged on the cantilever end of the cantilever frame;

[0008] The lifting devices on the elevation adjustment support frame and the end elevation adjustment frame are used for hoisting the cantilever steel beam and realizing the elevation adjustment of the cantilever steel beam.

[0009] Preferably, each base is welded by square steel pipes into an integral "cross" shape.

[0010] Preferably, the columns are made of square steel pipes and are fixed on the base by welding.

[0011] Preferably, the connecting plate is fixed to the column by welding.

[0012] Preferably, the bottom of the suspension device is fixed to the top of the column by welding.

[0013] Preferably, bolt holes are formed in the connecting plate; both ends of the connecting rod are fixed to the connecting plates of adjacent columns by means of bolt connection.

[0014] Preferably, the connecting rod is made of square steel pipe, angle steel or channel steel.

[0015] Preferably, the embedded part is pre-fixed to the existing concrete floor by means of expansion bolt connection.

[0016] Preferably, the fixed end of the cantilever scaffold is fixedly connected to the embedded part by welding.

[0017] Preferably, the lifting device adopts a chain block, an electric hoist or a winch.

[0018] The utility model has the following beneficial effects compared with the prior art:

[0019] (1) The elevation adjustment support frame and the end elevation adjustment frame provided by the utility model can carry out component processing in the factory, improving the erection quality of the elevation adjustment device; at the construction site, only bolt connection is needed to assemble each component, effectively improving the erection efficiency of the on-site elevation adjustment device.

[0020] (2) The elevation adjustment support frame provided by the utility model can not only be used as a support, but also realize the goal of adjustable elevation at both ends of the cantilever steel beam by adjusting the lifting devices on the elevation adjustment support frame and the end elevation adjustment frame, improving the installation accuracy of the post-installed cantilever steel beam. Description of the Drawings

[0021] Figure 1 is the overall schematic diagram of the elevation adjustment device provided in this embodiment;

[0022] Figure 2 is the schematic diagram of the elevation adjustment support frame provided in this embodiment;

[0023] Figure 3 is the partial enlarged view of the connecting plate in the elevation adjustment support frame provided in this embodiment;

[0024] Figure 4 is the schematic diagram of the end elevation adjustment frame provided in this embodiment;

[0025] Figure 5 is the schematic diagram of the erection of the elevation adjustment device provided in this embodiment;

[0026] Figure 6 Schematic diagram of main beam hoisting and elevation adjustment provided for this embodiment;

[0027] Figure 7 Schematic diagram of secondary beam installation provided for this embodiment;

[0028] Figure 8 Schematic diagram of subsequent cantilever steel beam setting provided for this embodiment;

[0029] In the figure: elevation adjustment support frame 1, end elevation adjustment frame 2, cantilever steel beam 3, secondary beam 4, main beam 5, concrete floor slab 6, concrete beam and wall surface 7, hoisting device 8, column 1-1, base 1-2, suspension device 1-3, connecting rod 1-4, connecting plate 1-1-1, cantilever frame 2-1, embedded part 2-2. Specific implementation manners

[0030] To make the above objects, features and advantages of the present utility model more obvious and understandable, the specific implementation manners of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below. The technical features in each embodiment of the present utility model can be combined correspondingly without conflict.

[0031] As Figure 1 shown, as a preference for the specific implementation manner of the present utility model, this embodiment provides an elevation adjustment device for post-installed wall-piercing cantilever steel beams, including an elevation adjustment support frame 1 and an end elevation adjustment frame 2.

[0032] The elevation adjustment device provided by the present utility model is for the situation where there is a need to install a cantilever steel beam after the construction of the existing structure. The end elevation adjustment frame 2 is arranged on the existing concrete floor slab 6, with the main beam 5 below the concrete floor slab 6 and the already cast concrete beam and wall surface 7. In order to set the cantilever steel beam, the concrete beam and wall surface 7 are provided with steel beam holes, and the aperture of the steel beam holes is larger than the cantilever steel beam 3 to be set.

[0033] In the device provided by the present utility model, the elevation adjustment support frame 1 includes a plurality of columns 1-1, a base 1-2 and a suspension device 1-3, specifically as Figure 2As shown in the figure. The base 1-2 is arranged below the position where the cantilever steel beam 3 needs to be set. In this embodiment, each base 1-2 is welded by square steel pipes into an integral "cross" shape, making the base more stable. A vertical column 1-1 is fixedly arranged on each base 1-2, and the column 1-1 is fixed to the base 1-2 by welding. The column 1-1 can be made of square steel pipes. A plurality of connecting plates 1-1-1 are fixedly arranged on each column 1-1 at intervals along the longitudinal direction, and the connecting plates 1-1-1 are also fixed to the column 1-1 by welding.

[0034] As Figure 3 shown, in this embodiment, a plurality of bolt holes are formed in each connecting plate 1-1-1. In order to improve the compressive strength of the overall elevation adjustment support frame 1, a plurality of connecting rods 1-4 are arranged between adjacent columns 1-1. Both ends of the connecting rod 1-4 are fixed to the connecting plates 1-1-1 of adjacent columns 1-1 by bolt connection. In addition to the horizontal connecting rod 1-4 between adjacent vertical rods 1-1, there are also inclined connecting rods 1-4. The inclined connecting rods, the horizontal connecting rods and the vertical rods form a stable triangular structure, which can further increase the stability and bearing capacity of the elevation adjustment support frame 1 and prevent the support frame from tilting or collapsing when stressed.

[0035] It should be noted that in this embodiment, the connecting rod 1-4 is made of angle steel. Those skilled in the art can also select other section steels according to the actual working conditions, such as square steel pipes or channel steels.

[0036] In this embodiment, the bottom of the suspension device 1-3 is fixed to the top of the column 1-1 by welding. A hanging point for setting the hoisting device 8 is arranged at the top of the suspension device 1-3.

[0037] In the device provided by the present utility model, the end elevation adjustment frame 2 includes a cantilever frame 2-1 and a pre-embedded part 2-2, specifically as Figure 4 shown. The pre-embedded part 2-2 is pre-fixed on the existing concrete floor slab 6. In this embodiment, the pre-embedded part 2-2 is pre-fixed on the existing concrete floor slab 6 by means of expansion bolt connection. The cantilever frame 2-1 includes a fixed end fixedly connected to the pre-embedded part 2-2 and a cantilever end extending outwards. The fixed end of the cantilever frame 2-1 is fixedly connected to the pre-embedded part 2-2 by welding. A hanging point for setting the hoisting device 8 is arranged at the cantilever end of the cantilever frame 2-1.

[0038] The hoisting device 8 on the elevation adjustment support frame 1 and the end elevation adjustment frame 2 is used for hoisting the cantilever steel beam 3 and realizing the elevation adjustment of the cantilever steel beam 3. In this embodiment, the hoisting device 8 adopts a chain block. Those skilled in the art can also select an electric hoist or a winch as the hoisting device 8 according to the actual working conditions.

[0039] The construction method of the post-installed wall-piercing cantilever steel beam using the elevation adjustment device provided in this embodiment is as follows:

[0040] Step 1: As Figure 5 shown, weld the cantilever frame 2-1 to the embedded part 2-2 pre-buried in the concrete floor slab 6. Place the erected elevation adjustment support frame 1 under the position where the cantilever steel beam 3 needs to be set. The concrete beam and wall 7 are provided with steel beam holes for the post-installed wall-piercing cantilever steel beam 3, and the aperture of the steel beam hole is larger than the cantilever steel beam 3 to be set.

[0041] Step 2: As Figure 6 shown, use the manual hoists on the elevation adjustment support frame 1 and the end elevation adjustment frame 2 to hoist the cantilever steel beam 3. Temporarily fix the cantilever steel beam 3 with the help of the elevation adjustment support frame 1 and the end elevation adjustment frame 2, and adjust the elevation of the cantilever steel beam 3 by adjusting the lengths of the individual chain hoists.

[0042] Step 3: As Figure 7 shown, vertically arrange secondary beams 4 between the already installed cantilever steel beams 3 to complete the layout of the cantilever steel beams at this position.

[0043] Step 4: As Figure 8 shown, move the elevation adjustment support frame 1 along the layout direction of the cantilever steel beam to complete the layout of the subsequent cantilever steel beams.

[0044] An elevation adjustment device for a post-installed wall-piercing cantilever steel beam provided in this embodiment also functions as a support frame, eliminating the need to erect a full hall scaffold. The connecting rods between the elevation adjustment support frames are all connected by bolts, enabling the turnover use of the support frames, improving the elevation adjustment efficiency, and facilitating construction at the construction site.

[0045] The above embodiments are only a preferred solution of the present invention, but they are not intended to limit the present invention. Those of ordinary skill in the relevant technical field can still make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A height adjustment device for a rear-mounted through-wall cantilever steel beam, characterized in that: It comprises a height adjustment support frame (1) and an end height adjustment frame (2), wherein the end height adjustment frame (2) is arranged on an existing concrete floor slab (6); The elevation adjustment support frame (1) comprises a plurality of columns (1-1), a base (1-2) and a suspension device (1-3); the base (1-2) is arranged below a cantilever steel beam (3) to be arranged, and a column (1-1) is vertically fixed on each base (1-2); a plurality of connecting plates (1-1-1) are fixed on each column (1-1) at intervals in the longitudinal direction; a plurality of connecting rods (1-4) are arranged between adjacent columns (1-1), and the two ends of the connecting rods (1-4) are respectively fixed on the connecting plates (1-1-1) of adjacent columns (1-1); the bottom of the suspension device (1-3) is fixed to the top of the column (1-1), and a hanging point for arranging a lifting device (8) is provided on the top of the suspension device (1-3); The end elevation adjustment frame (2) comprises a cantilever frame (2-1) and an embedded part (2-2); the embedded part (2-2) is fixed on an existing concrete floor (6); the cantilever frame (2-1) comprises a fixed end fixedly connected to the embedded part (2-2) and a cantilever end extending outward; a hanging point for arranging a lifting device (8) is provided on the cantilever end of the cantilever frame (2-1); The lifting device (8) on the elevation adjustment support frame (1) and the end elevation adjustment frame (2) is used to lift the cantilever steel beam (3) and realize the elevation adjustment of the cantilever steel beam (3).

2. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: Each base (1-2) is welded into a "cross"-shaped whole by using square steel pipes.

3. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The upright column (1-1) is made of a square steel pipe and is fixed on the base (1-2) by welding.

4. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The connecting plate (1-1-1) is fixed on the column (1-1) by welding.

5. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The bottom of the suspension device (1-3) is fixed to the top of the column (1-1) by welding.

6. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: Bolt holes are provided on the connecting plate (1-1-1); both ends of the connecting rod (1-4) are fixed to the connecting plate (1-1-1) of the adjacent column (1-1) by means of bolt connection.

7. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The connecting rods (1-4) are made of square steel pipes, angle steels or channel steels.

8. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The embedded part (2-2) is pre-fixed on the existing concrete floor (6) by means of expansion bolt connection.

9. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The fixed end of the cantilever frame (2-1) is fixedly connected to the embedded part (2-2) by welding.

10. The elevation adjustment device for rear-mounted through-wall cantilevered steel beam according to claim 1, characterized in that: The lifting device (8) is a hand chain hoist, an electric hoist or a winch.

Images