Steel frame capable of being quickly folded and unfolded

Abstract

The utility model relates to a steel frame capable of being quickly folded and unfolded, which comprises a top plate, a bottom plate and support upright posts, the top plate comprises a steel beam frame and a roof panel, and the roof panel is fixedly connected with the steel beam frame; the bottom plate comprises a steel base and a floor, and the floor is fixedly connected with the steel base; according to the scheme, the steel frame node can be completely assembled in a factory and directly installed and formed through deformation and node fixation on site, site construction is facilitated, the construction speed is increased, and the steel frame node is high in bearing capacity and attractive in appearance.

Description

Technical Field

[0001] The utility model relates to the technical field of building steel structures, in particular to a rapidly foldable and unfoldable steel frame. Background Art

[0002] Steel frame structures are widely used in the construction field, but the beams, plates, columns, etc. of prefabricated steel frame structures need to be transported to the site before being assembled and built. Existing prefabricated buildings usually prefabricate a part of the frame structure, and then transport the plates, columns, beams, etc. to the site and assemble them on site to form an overall building steel frame. The installation process is relatively cumbersome and requires a lot of manpower and time. For emergency situations or temporary facilities, the installation speed and efficiency of this traditional structure become a major bottleneck. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing on-site assembly of steel frames is cumbersome and time-consuming.

[0004] The present invention solves the above-mentioned problem by adopting the following technical solution:

[0005] A steel frame that can be folded and unfolded quickly comprises a top plate, a bottom plate and supporting columns. The top plate comprises a steel beam frame and a roof plate, and the roof plate is fixedly connected to the steel beam frame; the bottom plate comprises a steel base and a floor, and the floor is fixedly connected to the steel base; there are at least four supporting columns, and the upper ends of the supporting columns are hinged to the top plate, and the lower ends are hinged to the bottom plate.

[0006] Compared with the prior art, the present invention adopting the above structure has the following beneficial effects:

[0007] The present invention provides a steel frame which can be assembled and directly installed on site through deformation and fixing, which greatly facilitates on-site construction and speeds up the construction speed.

[0008] As a preferred embodiment, a further technical solution of the above structure is:

[0009] The support column is divided into an upper column and a lower column at its midpoint. The upper column and the lower column are hinged via a second connecting piece, and the second connecting piece moves toward the middle of the steel frame when the steel frame is folded.

[0010] The beneficial effects obtained by the above features are as follows: when the steel frame of this solution is folded, the columns are retracted inwards, which reduces the occupied space and makes the volume smaller in the stored state.

[0011] The second connecting member is composed of a first wing plate, a second wing plate and a double-hole sleeve. A rotating shaft is fixed to the end of the first wing plate and the second wing plate respectively. The two rotating shafts are movably installed in the double-hole sleeve. A damping member is provided between the rotating shaft and the double-hole sleeve. The first wing plate is fixedly connected to the side wall of the upper column, and the second wing plate is fixedly connected to the side wall of the lower column.

[0012] The beneficial effects obtained by the above-mentioned features are as follows: in this example, the second connecting member is designed on the side of the column, and the upper and lower columns can be folded 180 degrees by utilizing double rotating shafts. Damping is utilized to constrain the upper and lower columns to protect the straight line state when supporting them. The upper and lower columns can still maintain full-section supporting force by abutting against each other, thereby reducing the weakening of the bearing capacity of the support column due to the axial node.

[0013] On the upper column and the lower column, two side surfaces adjacent to the side where the second connecting member is provided are provided with limiting grooves, and a limiting rod is installed in the limiting groove. One end of the limiting rod is rotatably connected to the lower end of the upper column through a pin shaft, and the free end is magnetically fixed to the limiting groove.

[0014] Beneficial effects obtained by the above features: This example utilizes rigid rods embedded in the node positions of the upper and lower columns to avoid bending of the connection nodes of the columns.

[0015] The two ends of the supporting column are connected to the top plate or the bottom plate through a first connecting piece, and the first connecting piece is composed of an articulated mother seat, an articulated sub-seat and a hinge seat coupling shaft. The hinge seat coupling shaft has an axis rod provided with an external thread, one end of the axis rod is fixedly connected to a cross cap, and a nut is installed at the other end; the articulated mother seat comprises an upper seat plate, three fixed ear plates are vertically welded on one side of the upper seat plate, and the other side is fixedly connected to the top plate or the bottom plate, each fixed ear plate is provided with a coaxial through hole, the inner wall of the through hole is provided with a thread, the fixed ear plate is sleeved on the axis rod, and the fixed ear plate located on the left side outside is abutted against the cross cap; the articulated sub-seat comprises a lower seat plate, three movable ear plates are vertically welded on one side of the lower seat plate, and the other side is fixedly connected to the end of the supporting column, each movable ear plate is provided with a coaxial through hole, the inner wall of the through hole is provided with a thread, the movable ear plate is sleeved on the axis rod, the movable ear plate and the fixed ear plate are staggered, and a reserved gap is provided between the right side of each movable ear plate and each fixed ear plate, and the nut is abutted and pressed against the movable ear plate located on the right side outside.

[0016] The beneficial effects obtained by the above-mentioned features are as follows: in this example, the multiple ear plates of the first connecting member strengthen the supporting strength of the shaft node, the threaded shaft ensures that the hinge seat has no uncontrollable axial movement, thereby making the node more stable, the reserved gap allows the node to rotate during operation, and the nut is used to lock the relative state of the hinge seat when supported by the frame. This node has a strong load-bearing capacity, and the frame is not easy to deform or tilt when bearing load.

[0017] A guard plate is also arranged outside the hinged base, the guard plate is enclosed on the outside, and an opening is formed on the side facing the middle of the steel frame.

[0018] The beneficial effects obtained by the above features are as follows: the guard plate in this example prevents the hinge point from being directly seen outside the steel frame, making the steel frame more beautiful in appearance.

[0019] The corners of the top plate and the bottom plate are fixedly connected with reinforcement blocks, the outer side of the reinforcement blocks is reserved with lifting holes, and the hinged female seat is welded and fixed to the reinforcement blocks.

[0020] Beneficial effects obtained from the above features: The design of the corner reinforcement blocks and the lifting holes in this example makes it difficult for the main supporting force points of the top and bottom plates to deform, which facilitates the transportation and deformation of the steel frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the support column structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the second connecting member of the utility model;

[0024] Figure 4 It is a schematic diagram of the upper and lower cylinders of the utility model being in a folded state;

[0025] Figure 5 This is a schematic diagram of the upper and lower columns supporting the present utility model;

[0026] Figure 6 This is an exploded view of the structure of the first connecting member of the utility model;

[0027] Figure 7 This is a schematic diagram of the hinged female seat of the utility model;

[0028] Figure 8 This is a schematic diagram of the hinged sub-base of the utility model;

[0029] Fig. 9 This is a schematic diagram of the matching structure of the hinged mother-child seat of the utility model;

[0030] Fig.10 It is a schematic diagram of the structure of the guard plate of the utility model.

[0031] In the figure: 1. top plate; 2. bottom plate; 3. supporting column; 301. upper column; 302. lower column; 4. first connecting piece; 401. hinge seat and shaft; 402. hinged mother seat; 403. hinged child seat; 404. nut; 5. second connecting piece; 501. first wing plate; 502. second wing plate; 503. double-hole bushing; 6. reinforcement block; 7. guard plate; 8. reserved gap; 9. limiting groove; 10. limit rod; 11. lifting hole. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0033] See also Figures 1 to 10 The utility model provides a fast folding and unfolding steel frame, comprising a top plate 1, a bottom plate 2 and a supporting column 3.

[0034] A top plate 1, comprising a steel beam frame and a roof panel fixed on the steel beam frame;

[0035] Base plate 2, comprising a steel base and a floor fixed on the steel base;

[0036] There are at least four supporting columns 3, the upper ends of which are hinged to the top plate 1, and the lower ends are hinged to the bottom plate 2. For a small steel frame, supporting columns 3 can be arranged at the four corners of the top plate 1 and the bottom plate 2, while for a larger steel frame, multiple supporting columns can be evenly arranged in the middle for common support.

[0037] The support column 3 of the utility model is designed as a two-stage, middle foldable structure, specifically: the support column 3 is divided into an upper column 301 and a lower column 302 at its midpoint, the upper column 301 and the lower column 302 are hinged by a second connecting member 5, and the second connecting member 5 moves toward the middle of the steel frame when the steel frame is folded. In this way, after the steel frame is folded, each column is folded inside the frame, reducing the overall volume and occupying less space during transportation.

[0038] Optional, see Figures 2 to 5 The second connecting member 5 is composed of a first wing plate 501, a second wing plate 502 and a double-hole sleeve 503. A rotating shaft is fixed to the ends of the first wing plate 501 and the second wing plate 502 respectively. The two rotating shafts are movably installed in the double-hole sleeve 503. A damping member is provided between the rotating shaft and the double-hole sleeve 503. The first wing plate 501 is fixedly connected to the side wall of the upper column 301, and the second wing plate 502 is fixedly connected to the side wall of the lower column 302. Specifically, the upper column 301 and the lower column 302 are provided with an engaging groove to cooperate with the installation of the first wing plate 501 and the second wing plate 502, so that the second connecting member 5 is embedded in the node position of the supporting column 3, making the column more beautiful.

[0039] In the above embodiment, the second connecting member 5 is designed on the side of the supporting column 3, and the damping constraint is used to protect the straight state of the upper column 301 and the lower column 302 when supporting. The bottom surface of the upper column 301 completely falls on the top surface of the lower column 302, thereby maintaining the support force transmission of the entire cross-section, so that the loss of the bearing capacity of the supporting column 3 is relatively small; the supporting column 3 can be bent and folded by pushing the hinge node inward, and the operation is very convenient. The upper column 301 and the lower column 302 can be folded 180 degrees.

[0040] Furthermore, the utility model takes into account that the second connecting member 5 is not an absolute constraint on the straightness of the supporting state, and when a certain supporting column 3 is accidentally hit, it may also cause the column to bend. To avoid this safety problem, the utility model designs a constraint structure, specifically, on the upper column 301 and the lower column 302, two side surfaces adjacent to the side where the second connecting member 5 is provided are provided with a limiting groove 9, and a limiting rod 10 is installed in the limiting groove 9. One end of the limiting rod 10 is rotatably connected to the lower end of the upper column 301 through a pin, and the free end is fixed to the limiting groove 9 by magnetic attraction. The limiting groove 9 is composed of continuous slots of the upper column 301 and the lower column 302. The limiting rod 10 is located in the upper column 301 when the steel frame is folded. When the steel frame needs to be unfolded, the free end of the limiting rod 10 is pulled out and transferred to the groove of the lower column 302. The magnetic buckles embedded at both ends of the limiting groove 9 can effectively stabilize the limiting rod 10. The upper end of the limiting rod 10 is in the upper column 301 , and the lower end is in the lower column 302 . When the node is bent, it cannot be constrained by the limiting rod 10 . When folding is required, the limiting rod 10 rotates back to the upper column 301 .

[0041] Optionally, both ends of the support column 3 are connected to the top plate 1 or the bottom plate 2 through a first connecting member 4, see Figures 6 to 9 The first connecting member 4 is composed of a hinged female seat 401, a hinged sub-seat 403 and a hinged seat connecting shaft 401.

[0042] The hinge seat connecting shaft 401 has a shaft rod 4012 with external threads, one end of the shaft rod 4012 is fixedly connected to the cross cap 4011, and the other end is installed with a nut 404;

[0043] The hinged female seat 402 includes an upper seat plate 4021, one side of which is vertically welded with three fixed ear plates 4022, and the other side is fixedly connected to the top plate 1 or the bottom plate 2, each fixed ear plate 4022 is provided with a coaxial through hole, the inner wall of the through hole is provided with a thread, the fixed ear plate 4022 is sleeved on the shaft 4012, and the fixed ear plate 4022 located on the left side is in contact with the cross cap 4011;

[0044] The hinged sub-base 403 includes a lower seat plate 4031, three movable ear plates 4032 are vertically welded on one side of the lower seat plate 4031, and the other side is fixedly connected to the end of the supporting column 3, each movable ear plate 4032 is provided with a coaxial through hole, the inner wall of the through hole is provided with a thread, the movable ear plate 4032 is sleeved on the shaft rod 4012, the movable ear plate 4032 and the fixed ear plate 4022 are staggered, and a reserved gap 8 is provided between the right side of each movable ear plate 4032 and each fixed ear plate 4022, and the nut 404 is abutted and pressed against the movable ear plate 4032 located on the outside of the right side.

[0045] In this embodiment, in the supporting state, the articulated mother seat 402 and the hinge shaft 401 are screwed together and pressed tightly, and the rotation and axial movement of the articulated mother seat 402 must occur simultaneously. The articulated sub-seat 403 presses the articulated mother seat 402 from the rear to restrict its axial movement and thus its rotation; the nut 404 presses the articulated sub-seat 403 from the rear to restrict its axial movement and thus restricts the articulated sub-seat 403 from rotating. That is, after the nut 404 is tightened, the first connecting member 4 is fixed to ensure that the top plate 1 and the supporting column 3 are in a relatively vertical state; when the nut 404 is loosened, the articulated sub-seat 403 has space for axial movement, so that it can rotate, thereby realizing the folding of the steel frame.

[0046] In the above embodiment, three fixed ear plates 4022 or movable ear plates 4032 are arranged in parallel as a preferred embodiment, and the number can be increased as needed. The design principle is that equal numbers of ear plates are staggered with each other, and the axial movement and rotation cannot occur through the compression of nuts, which are all included in the design concept.

[0047] See also Fig.10 A guard plate 7 is also provided outside the hinged mother seat 402. The guard plate 7 is enclosed on three outer sides, and is open on the side facing the middle of the steel frame. The open side allows the node to rotate freely. The guard plate 7 blocks the node on three sides, and people outside the steel frame cannot directly see the hinge point, making the steel frame more beautiful in appearance.

[0048] The corners of the top plate 1 and the bottom plate 2 are fixed with reinforcement blocks 6, and lifting holes 11 are reserved on the outside of the reinforcement blocks 6. The hinged base 402 is welded and fixed to the reinforcement blocks 6. The design of the corner reinforcement blocks 6 and the lifting holes 11 makes it difficult for the main supporting force points of the top plate 1 and the bottom plate 2 to deform.

[0049] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A steel frame that can be folded and unfolded quickly, comprising a top plate (1), a bottom plate (2) and supporting columns (3), characterized in that: A top plate (1) comprises a steel beam frame and a roof plate, wherein the roof plate is fixedly connected to the steel beam frame; The bottom plate (2) comprises a steel base and a floor, wherein the floor is fixedly connected to the steel base; There are at least four supporting columns (3), the upper ends of the supporting columns (3) are hinged to the top plate (1), and the lower ends are hinged to the bottom plate (2); the supporting columns (3) are divided into an upper column (301) and a lower column (302) at their midpoints, the upper column (301) and the lower column (302) are hinged via a second connecting member (5), and the second connecting member (5) moves toward the middle of the steel frame when the steel frame is folded; the second connecting member (5) is composed of a first wing plate (501), a second wing plate (502) and a double-hole shaft sleeve (503), and the ends of the first wing plate (501) and the second wing plate (502) are respectively fixed with a A rotating shaft, wherein the two rotating shafts are movably installed in a double-hole shaft sleeve (503), a damping member is provided between the rotating shaft and the double-hole shaft sleeve (503), the first wing plate (501) is fixedly connected to the side wall of the upper column (301), and the second wing plate (502) is fixedly connected to the side wall of the lower column (302); on the upper column (301) and the lower column (302), two side surfaces adjacent to the side where the second connecting member (5) is provided are provided with limiting grooves (9), a limiting rod (10) is installed in the limiting groove (9), one end of the limiting rod (10) is rotatably connected to the lower end of the upper column (301) through a pin shaft, and the free end is fixed to the limiting groove (9) by magnetic attraction.

2. The fast foldable and unfoldable steel frame according to claim 1, characterized in that: The two ends of the support column (3) are connected to the top plate (1) or the bottom plate (2) via a first connecting member (4), and the first connecting member (4) is composed of a hinged mother seat (402), a hinged child seat (403) and a hinge seat connecting shaft (401). The hinge seat connecting shaft (401) has a shaft rod (4012) provided with an external thread, one end of the shaft rod (4012) is fixedly connected to a cross cap (4011), and the other end is installed with a nut (404); The hinged female seat (402) comprises an upper seat plate (4021), three fixed ear plates (4022) are vertically welded on one side of the upper seat plate (4021), and the other side is fixedly connected to the top plate (1) or the bottom plate (2), each fixed ear plate (4022) is provided with a coaxial through hole, and the inner wall of the through hole is provided with a thread, the fixed ear plate (4022) is sleeved on the shaft (4012), and the fixed ear plate (4022) located on the left side outside is in contact with the cross cap (4011); The hinged sub-base (403) comprises a lower base plate (4031), one side of which is vertically welded with three movable ear plates (4032), and the other side of which is fixedly connected to the end of the supporting column (3), each movable ear plate (4032) is provided with a coaxial through hole, the inner wall of the through hole is provided with a thread, the movable ear plate (4032) is sleeved on the shaft (4012), the movable ear plate (4032) and the fixed ear plate (4022) are arranged alternately, and a reserved gap (8) is provided between the right side of each movable ear plate (4032) and each fixed ear plate (4022), and the nut (404) is abutted and pressed against the movable ear plate (4032) located on the outside of the right side.

3. The fast foldable and unfoldable steel frame according to claim 2, characterized in that: A guard plate (7) is also provided outside the hinged female seat (402), and the guard plate (7) is enclosed on three outer sides, and is open on the side facing the middle of the steel frame.

4. The fast foldable and unfoldable steel frame according to claim 2, characterized in that: A reinforcing block (6) is fixedly connected to the corners of the top plate (1) and the bottom plate (2), a lifting hole (11) is reserved on the outside of the reinforcing block (6), and the hinged female seat (402) is fixed to the reinforcing block (6) by welding.

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