Large-span portal frame

Abstract

The utility model provides a large-span portal frame which comprises supporting columns, the upper portions of the supporting columns on the two sides are jointly connected with an oblique beam, a cross beam is arranged between the supporting columns on the two sides, a bearing plate is fixedly arranged on the supporting columns, and a bearing platform for connecting and supporting the cross beam is formed at the top of the bearing plate. An extensible or retractable stand column is arranged above the cross beam, a supporting frame is arranged above the stand column, and a supporting part connected with the oblique beam in an abutting mode is arranged on the outer surface of the supporting frame. The stability of connection between the two supporting columns can be better through the cross beam, the stability of the main body steel frame structure is improved, the supporting frames on the cross beam can abut against the oblique beam, the contact area between the supporting frames and the oblique beam is increased, and therefore the strength of the oblique beam is enhanced, and the stability of the oblique beam is improved. Meanwhile, the strength of the oblique beam is improved, and deformation and bending are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of portal frames, and particularly relates to a large-span portal frame. Background Art

[0002] The large-span structure of a portal frame is a large-span portal steel frame. With the changes of the times and technologies, the structure of the large-span portal frame is getting larger and larger. For example, a large-span structure of a portal frame with the Chinese patent application number [CN201920377432.2] fixedly installs an anti-disengagement support mounting frame on the outer surface of the lower end of the connecting support structure. A connecting mounting support column is fixedly installed on the outer surface of the upper end of the steel frame top beam column, and a top stabilizing mounting frame is fixedly installed on the outer surface of the upper end of the connecting mounting support column. In this way, the stability between the steel frame top beam columns is increased.

[0003] However, the above solution still has certain defects for the large-span portal frame. The steel frame top beam columns are only connected and supported by the anti-disengagement support mounting frame, and the contact area with the steel frame top beam columns is small. After long-term use or under a large impact force, the steel frame top beam columns are likely to deform and bend, affecting the stability of the entire building structure, and thus the safety of the portal frame structure cannot be well guaranteed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a large-span portal frame that can improve the overall and inclined beam stability.

[0005] For this reason, the utility model adopts the following technical solutions:

[0006] A large-span portal frame includes support columns. An inclined beam is commonly connected above the support columns on both sides. A cross beam is arranged between the support columns on both sides. A support plate is fixedly arranged on the support column, and a bearing platform for connecting and supporting the cross beam is formed at the top of the support plate; An extendable or retractable upright column is arranged above the cross beam, a support frame is arranged above the upright column, and a support portion abutted against the inclined beam is arranged on the outer surface of the support frame.

[0007] Further: A clamping seat is fixedly connected to the top of the cross beam. An opening communicating with its internal cavity is formed above the clamping seat. The upright column is limitedly arranged in the internal cavity of the clamping seat with a connecting seat, and the connecting seat is connected to the bottom of the support frame.

[0008] Further: A movable insertion rod is arranged on the side surface of the clamping seat. A locking portion that can pass through the clamping seat and extend into its internal cavity is arranged at the end of the insertion rod. A through hole that can cooperate with the locking portion is formed in the connecting seat.

[0009] Further: A boss is provided at the end of the insertion rod away from the card seat, and a spring is provided between the boss and the outer surface of the card seat.

[0010] Further: A screw rod is provided at the top of the connecting seat, and a screw sleeve is rotatably connected to the bottom of the support frame, and the screw sleeve is in threaded connection with the screw rod.

[0011] Further: A fixing block is provided at the bottom of the inclined beam, and a groove matching the fixing block is provided on the supporting part of the support frame.

[0012] Further: The supporting plate includes a support plate sleeved on the support column, and bolts passing through its wall and connecting to the support column are provided on the support plate.

[0013] Further: An inclined rod is provided on one side of the support column, and a limiting column connected to the inclined rod is provided on the side surface of the support column.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] With the cross beam of the utility model, the connection stability between two support columns can be better, improving the stability of the main steel frame structure. Moreover, the support frame on the cross beam can abut against the inclined beam and increase the contact area with the inclined beam, thereby strengthening the strength of the inclined beam and improving its stability, and at the same time increasing the strength of the inclined beam to prevent deformation and bending. The utility model facilitates the adjustment of the height of the support frame by the threaded connection between the screw sleeve and the threaded seat to adapt to inclined beams of different heights, and the sliding clamping connection between the threaded seat and the elastic card seat facilitates the disassembly of the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the connection structure between the connection component and the cross beam of the utility model;

[0018] Figure 3 is a schematic diagram of the structure of the card seat of the utility model;

[0019] Figure 4 is a schematic diagram of the structure of the threaded seat of the utility model.

[0020] The reference signs in the drawings are: 100 - steel frame assembly; 110 - inclined beam; 111 - fixing block; 120 - support column; 121 - limiting column; 122 - inclined rod; 200 - support assembly; 210 - supporting plate; 211 - support plate; 212 - bolt; 220 - cross beam; 230 - card seat; 232 - insertion rod; 233 - spring; 240 - connection seat; 241 - through hole; 242 - screw rod; 250 - screw sleeve; 260 - support frame; 261 - groove. Detailed implementation manners

[0021] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.

[0022] As Figures 1-4 shown, a long-span gabled steel frame includes a steel frame assembly 100 and a support assembly 200. The steel frame assembly 100 commonly connects inclined beams 110 above the support columns 120 on both sides; the support assembly 200 is used to support and connect the steel frame assembly 100 to improve the support strength. A cross beam 220 is arranged between the support columns 120 on both sides. Through the cross beam 220, the connection between the two support columns 120 can be made more stable. A support plate 210 is fixedly arranged on the support column 120, and a bearing platform for connecting and supporting the cross beam 220 is formed at the top of the support plate 210; a telescopic or retractable column is arranged above the cross beam 220, and a support frame 260 is erected above the column. A support portion abutted against the inclined beam 110 is arranged on the outer surface of the support frame 260. By changing the height of the top of the column, the support portion of the support frame 260 can be made to contact or not contact the outer surface of the bottom of the inclined beam 110, so as to facilitate the disassembly and assembly of the support frame 260 and ensure the support strength between the support portion of the support frame 260 and the outer surface of the bottom of the inclined beam 110.

[0023] As Figure 1 shown, in this embodiment, the inclined beam 110 is of an inverted V-shaped structure; the support frame 260 is preferably a triangular structure that matches it. Through this structure, the stability of the supported inclined beam 110 can be further guaranteed.

[0024] As Figure 1 and 3 shown in -4, the connection between the column and the cross beam 220 is a detachable connection. A clamping seat 230 is fixedly connected to the top of the cross beam 220, and an opening communicating with its internal cavity is formed above the clamping seat 230; moreover, a connecting seat 240 is limitedly arranged in the internal cavity of the clamping seat 230, and the connecting seat 240 is connected to the bottom of the support frame 260. At the same time, a movable insertion rod 232 is arranged on the side surface of the clamping seat 230, and a locking portion that can pass through the clamping seat 230 and extend into its internal cavity is arranged at the end of the insertion rod 232. Through holes 241 are formed in both side surfaces of the connecting seat 240, and the through holes 241 can cooperate with the locking portion, so as to limit the connecting seat 240 sliding in the clamping seat 230, thereby locking the column on the cross beam 220.

[0025] As Figure 3As shown, the insertion rod 232 is T-shaped as a whole, and a boss is provided at the end of the insertion rod 232 on the side far from the card seat 230. The diameter of the boss of the insertion rod 232 is greater than the diameter of the rod body of the insertion rod 232. At the same time, a spring 233 is provided between the boss and the outer surface of the card seat 230. It should be noted that the locking portion of the insertion rod 232 has extended into the inner cavity of the card seat 230 when the spring 233 is not stretched or contracted.

[0026] As Figure 4 shown, a screw rod 242 is provided at the top of the connecting seat 240, and a screw sleeve 250 is rotatably connected to the bottom of the support frame 260. By the threaded connection and cooperation between the screw sleeve 250 and the screw rod 242, the height position of the support frame 260 can be adjusted to facilitate the installation or disassembly of the support frame 260. At the same time, under the combined action of the screw sleeve 250 and the screw rod 242, the height of the support frame 260 can be adjusted to adapt to the inclined beams 110 of different heights.

[0027] As Figure 2 and 4 shown, a fixing block 111 is provided at the bottom of the inclined beam 110, and a groove 261 matching the fixing block 111 is formed on the supporting portion of the support frame 260. Thus, the fixing block 111 can be used for limiting when the inclined beam 110 is connected to the support frame 260 to ensure that the support frame 260 will not easily separate from the inclined beam 110.

[0028] As Figures 1-2 shown, the support plate 210 includes a support plate 211 as the main structure. The support plate 211 is sleeved on the support column 120, and the bearing platform is correspondingly arranged on the top of the support plate 211. Bolts 212 passing through its wall body are provided below the bearing platform of the support plate 211, and threaded holes matching the bolts 212 are provided on the support column 120. The support plate 211 can be fixed on the support column 120 by the threaded connection between the bolts 212 and the support column 120.

[0029] As Figures 1-2 shown, an inclined rod 122 is provided on one side of the support column 120, and a limiting column 121 is provided on the same side surface of the support column 120 as the inclined rod 122. The limiting column 121 is located below the connection position of the inclined rod 122 and the support column 120. The limiting column 121 is used for fixedly connecting with the inclined rod 122. The stability of the support column 120 can be increased through the inclined rod 122 to prevent the collapse of the portal frame structure.

[0030] Please refer to Figures 1-4 , when assembling the long-span portal frame, the specific content is as follows:

[0031] First, by connecting and fixing the cross beam 220 between two support columns 120, the user can move the support frame 260 up and down by rotating the screw sleeve 250 until the support part of the support frame 260 abuts against the bottom outer surface of the inclined beam 110. The contact area between the column and the inclined beam 110 can be increased through the support frame 260, and the support frame 260 can be supported by the cross beam 220, the connecting seat 240 and the screw sleeve 250 to strengthen the strength of the inclined beam 110 and improve the stability of the inclined beam 110.

[0032] Secondly, when it is necessary to disassemble the support frame 260, the user can rotate the screw sleeve 250 to move the support frame 260 downward to separate it from the inclined beam 110, then pull the insertion rod 232 to separate it from the through hole 241, and then the connecting seat 240 can be removed from the inside of the clamping seat 230, thus completing the disassembly of the support frame 260. Conversely, the above operation can be used for its installation.

[0033] The above embodiments are only a relatively optimal technical solution of the present invention. Those skilled in the art should understand that without departing from the principle and essence of the present invention, the technical solutions or parameters in the embodiments can be modified or replaced, and all should be covered within the protection scope of the present invention.

Claims

1. A large-span portal steel frame, comprising a support column (120), wherein the support columns (120) on both sides are connected to an inclined beam (110) above, characterized in that: A crossbeam (220) is arranged between the support columns (120) on both sides, a support plate (210) is fixedly arranged on the support column (120), and the top of the support plate (210) forms a bearing platform for connecting and supporting the crossbeam (220); An extendable or retractable column is provided above the cross beam (220), a support frame (260) is provided above the column, and a support portion abutting against the oblique beam (110) is provided on the outer surface of the support frame (260).

2. A large-span portal steel frame according to claim 1, characterized in that: The top of the crossbeam (220) is fixedly connected with a holder (230), the top of the holder (230) has an opening communicating with the internal cavity thereof, the upright column is provided with a connecting seat (240) in a limited position in the internal cavity of the holder (230), and the connecting seat (240) is connected to the bottom of the support frame (260).

3. A large-span portal steel frame according to claim 2, characterized in that: A movable insertion rod (232) is arranged on the side of the card seat (230), and a locking portion is arranged at the end of the insertion rod (232) and can pass through the card seat (230) and extend into the internal cavity thereof, and a through hole (241) that can cooperate with the locking portion is opened in the connecting seat (240).

4. A large-span portal steel frame according to claim 3, characterized in that: The insert rod (232) is provided with a boss at the end portion of the side away from the clamping seat (230), and a spring (233) is provided between the boss and the outer surface of the clamping seat (230).

5. A large-span portal steel frame according to claim 1 or 2, characterized in that: The column is provided with a screw rod (242) at its upper section, and the bottom of the support frame (260) is rotatably connected with a screw sleeve (250), and the screw sleeve (250) is threadedly connected and matched with the screw rod (242).

6. The large-span portal steel frame according to claim 1, characterized in that: A fixing block (111) is provided at the bottom of the inclined beam (110), and a groove (261) cooperating with the fixing block (111) is provided on the supporting portion of the supporting frame (260).

7. The large-span portal steel frame according to claim 1, characterized in that: The support plate (210) comprises a support plate (211) sleeved on a support column (120), and the support plate (211) is provided with bolts (212) passing through its wall and connected to the support column (120).

8. The large-span portal steel frame according to claim 1, characterized in that: An inclined rod (122) is provided on one side of the support column (120), and a limiting column (121) connected to the inclined rod (122) is provided on the side of the support column (120).

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