Adjustable unloading device suitable for reinforcing steel beam

Abstract

The utility model belongs to the technical field of steel structure building installation, and particularly relates to an adjustable unloading device suitable for reinforcing a steel beam. Comprising a bottom support, a lead screw, an adjustable support, a supporting plate, an inner sleeve, an outer sleeve and a limiting plate. The lead screw is fixedly erected on the bottom support, and the adjustable support is in threaded screwing with the lead screw through the threaded through hole; the support plate is sleeved outside the lead screw and is welded at the top of the adjustable support; the lead screw is sleeved with the outer sleeve, a bottom pipe opening of the outer sleeve is welded to the supporting plate, the lead screw and the outer sleeve are sleeved with the inner sleeve, the inner sleeve, the outer sleeve and the lead screw are coaxial, a top pipe opening of the outer sleeve is higher than the inner sleeve, and the inner wall of the inner sleeve is in sliding contact with the lead screw; the limiting plate is connected between the inner sleeve and the outer sleeve; a plurality of stress fulcrums are distributed around the outer sleeve; the adjustable unloading device suitable for reinforcing the steel beam is clear in force transmission road strength, high in bearing capacity, capable of being used in a turnover mode and good in safety and economical efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure building installation, and in particular relates to an adjustable unloading device suitable for steel beam reinforcement. Background Art

[0002] Steel-structured civil buildings have many advantages, such as good earthquake resistance, large span, and light weight. During the housing renovation process, old steel-structured buildings cannot meet the existing relevant specifications and need to be upgraded. During the renovation process, the biggest problem faced is the problem of unloading horizontal components. The connection between steel beams and steel columns is usually bolted or bolted and welded. Unloading is required before the node reinforcement. It is necessary to invent an unloading device that can adjust the height to suit different steel-structured buildings. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described below.

[0004] The utility model provides the following technical scheme: an adjustable unloading device suitable for reinforcing steel beams, comprising a bottom support, a lead screw, an adjustable support, a support plate, an inner sleeve, an outer sleeve and a limit plate; the lead screw is fixedly erected on the bottom support, and the adjustable support is screwed with the lead screw thread through a threaded through hole; the support plate is sleeved outside the lead screw, and the support plate is welded to the top of the adjustable support; the outer sleeve is sleeved outside the lead screw, the bottom pipe mouth of the outer sleeve is welded to the support plate, the inner sleeve is sleeved between the lead screw and the outer sleeve, the inner sleeve, the outer sleeve and the lead screw are coaxial, the top pipe mouth of the outer sleeve is higher than the inner sleeve, and the inner wall of the inner sleeve is in sliding contact with the lead screw; the limit plate is connected between the inner sleeve and the outer sleeve; the outer sleeve is provided with a plurality of force fulcrums distributed around it.

[0005] Furthermore, a stiffening plate is welded between the outer sleeve and the supporting plate, each stiffening plate serves as a force fulcrum, the stiffening plate is perpendicular to the supporting plate, and the stiffening plates are evenly distributed around the outer sleeve.

[0006] Further, the bottom support is a bottom plate, and the bottom end of the lead screw is welded to the bottom plate.

[0007] Furthermore, the limiting plates are aligned with the diameter of the inner sleeve, and the limiting plates are evenly distributed around the inner sleeve.

[0008] Furthermore, four stiffening plates are welded between the outer sleeve and the supporting plate.

[0009] Furthermore, four limiting plates are welded between the inner sleeve and the outer sleeve.

[0010] Furthermore, the bottom support is a square bottom plate, the lead screw is erected at the center of the bottom support, the support plate is square, and the lead screw passes through the center of the support plate; the stiffening plate is aligned with the diagonal line of the support plate.

[0011] Furthermore, the limiting plates and the stiffening plates are staggered in the circumferential direction, and the stiffening plates are located between the limiting plates.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The utility model provides an adjustable unloading device suitable for steel beam reinforcement, which has a clear force transmission path, high bearing capacity, can be used cyclically, has good safety and economy, completes structural unloading before reinforcement, releases node stress, and ensures the safety of the steel structure reinforcement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the adjustable unloading device from a first perspective;

[0015] Figure 2 A schematic diagram of the adjustable unloading device from a second viewing angle;

[0016] Figure 3 A third-view schematic diagram of the adjustable unloading device.

[0017] In the figure: 1-bottom support; 2-screw; 3-adjustable support; 4-support plate; 5-inner sleeve; 6-outer sleeve; 7-limiting plate; 8-stiffening plate. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figure 1 , Figure 3 , Figure 3As shown: an adjustable unloading device suitable for strengthening steel beams, comprising a bottom support 1, a lead screw 2, an adjustable support 3, a support plate 4, an inner sleeve 5, an outer sleeve 6 and a limit plate 7; the lead screw 2 is fixedly erected on the bottom support 1, the adjustable support 3 is screwed with the lead screw 2 through a threaded through hole, the lead screw 2 is stationary, and the adjustable support 3 moves on the lead screw 2 when it rotates; the support plate 4 is sleeved outside the lead screw 2, and the support plate 4 is welded to the top of the adjustable support 3; the outer sleeve 6 is sleeved outside the lead screw 2, and the bottom pipe opening of the outer sleeve 6 is connected to the support plate 3. The plate 4 is welded, and the adjustable support 3 pushes the outer sleeve 6 through the support plate 4. The inner sleeve 5 is sleeved between the screw 2 and the outer sleeve 5. The inner sleeve 5, the outer sleeve 6, and the screw 2 are coaxial. The top pipe opening of the outer sleeve 6 is higher than the inner sleeve 5, and the inner wall of the inner sleeve 5 is in sliding contact with the screw 2; the limit plate 7 is connected between the inner sleeve 5 and the outer sleeve 6, and the inner sleeve 5 and the limit plate 7 radially support the outer sleeve 6; there are several force fulcrums distributed around the outer sleeve 6, and the outer sleeve 6 is rotated by applying thrust to the force fulcrum.

[0020] A stiffening plate 8 is welded between the outer sleeve 6 and the support plate 4 . Each stiffening plate 8 serves as a force fulcrum. The stiffening plate 8 is perpendicular to the support plate 4 . The stiffening plates 8 are evenly distributed around the outer sleeve 6 .

[0021] The bottom support 1 is a bottom plate, the bottom end of the lead screw 2 is welded to the bottom plate, and the lead screw 2 and the bottom support 1 are welded by circumferential welding.

[0022] The connections between the various nodes of the adjustable unloading device are welded, and the manufacturing process is simple. Before being put into use, the welds should be inspected for flaws and put into use after passing the acceptance inspection.

[0023] When reinforcing a steel structure project, the adjustable unloading device is placed on a reliable support frame, and the outer sleeve 6 is rotated by applying force through the stiffening plate 8 to adjust the lifting and lowering of the outer sleeve 6. After the top of the outer sleeve 6 is tightly pressed against the lower flange of the steel beam, the stiffening plate 8 is hit by a hammer to make the outer sleeve 6 rotate upward. After the adjustable unloading device supports the steel beam to bear force, the unloading of the original structural beam is completed, and the node reinforcement work can be carried out.

[0024] Four limit plates 7 are welded between the inner sleeve 5 and the outer sleeve 6. The limit plates 7 are aligned with the diameter of the inner sleeve 5, and the limit plates 7 are evenly distributed around the inner sleeve 5. Four stiffening plates 8 are welded between the outer sleeve 6 and the support plate 4. The limit plates 7 and the stiffening plates 8 are staggered in the circumferential direction, and the stiffening plates 8 are located between the limit plates 7.

[0025] The bottom support 1 is a square bottom plate, the lead screw 2 stands upright at the center of the bottom support 1 , the support plate 4 is square, and the lead screw 2 passes through the center of the support plate 4 ; the stiffening plate 8 is aligned with the diagonal line of the support plate 4 .

[0026] Specifically, the specification of the outer sleeve 6 is D114x4mm, the material is Q355B, and the height is 370mm. The inner sleeve 5 adopts a D48.3X2.8mm steel pipe, and the limit plate 7 adopts an 8mm thick steel plate. The limit plate 7 is welded between the outer sleeve 6 and the inner sleeve 5. The specification of the lead screw 2 is D36X3.5mm, and the material is Q355B. The adjustable support 3 is used in conjunction with the lead screw 2. The support plate 4 is a 120x120mm steel plate, and the four diagonal plates on the support plate 4 are provided with 40mm wide and 80mm high stiffening plates 8. A 300x300mm bottom plate with a thickness of 10mm is welded at the bottom end of the lead screw 2.

[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable unloading device suitable for steel beam reinforcement, characterized in that: The invention comprises a bottom support (1), a lead screw (2), an adjustable support (3), a support plate (4), an inner sleeve (5), an outer sleeve (6) and a limit plate (7); the lead screw (2) is fixed and erected on the bottom support (1); the adjustable support (3) is screwed with the lead screw (2) through a threaded through hole; the support plate (4) is sleeved outside the lead screw (2); the support plate (4) is welded to the top of the adjustable support (3); the outer sleeve (6) is sleeved outside the lead screw (2); the outer sleeve (6) is sleeved outside the lead screw (2); ) is welded to a support plate (4); an inner sleeve (5) is sleeved between a lead screw (2) and an outer sleeve (6); the inner sleeve (5), the outer sleeve (6) and the lead screw (2) are coaxial; a top sleeve of the outer sleeve (6) is higher than the inner sleeve (5); an inner wall of the inner sleeve (5) is in sliding contact with the lead screw (2); a limit plate (7) is connected between the inner sleeve (5) and the outer sleeve (6); and a plurality of force bearing fulcrums are distributed around the outer sleeve (6).

2. The adjustable unloading device for steel beam reinforcement according to claim 1, characterized in that: A stiffening plate (8) is welded between the outer sleeve (6) and the support plate (4), each stiffening plate (8) serves as a force fulcrum, the stiffening plate (8) is perpendicular to the support plate (4), and the stiffening plates (8) are evenly distributed around the outer sleeve (6).

3. The adjustable unloading device for steel beam reinforcement according to claim 2, characterized in that: The bottom support (1) is a bottom plate, and the bottom end of the lead screw (2) is welded to the bottom plate.

4. The adjustable unloading device for steel beam reinforcement according to claim 2, characterized in that: The limiting plates (7) are aligned with the diameter of the inner sleeve (5), and the limiting plates (7) are evenly distributed around the inner sleeve (5).

5. The adjustable unloading device for steel beam reinforcement according to claim 4, characterized in that: Four stiffening plates (8) are welded between the outer sleeve (6) and the support plate (4).

6. The adjustable unloading device for steel beam reinforcement according to claim 5, characterized in that: Four limiting plates (7) are welded between the inner sleeve (5) and the outer sleeve (6).

7. The adjustable unloading device for steel beam reinforcement according to claim 5, characterized in that: The bottom support (1) is a square bottom plate, the lead screw (2) is erected at the center of the bottom support (1), the support plate (4) is square, and the lead screw (2) passes through the center of the support plate (4); the stiffening plate (8) is aligned with the diagonal line of the support plate (4).

8. The adjustable unloading device for steel beam reinforcement according to claim 6, characterized in that: The limiting plates (7) and stiffening plates (8) are staggered in the annular direction, and the stiffening plates (8) are located between two limiting plates (7).

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