Steel truss supporting assembly type cover plate structure

Abstract

The utility model relates to a steel truss support assembly type cover plate structure which comprises three cover plates, and the first cover plate and the third cover plate are fixed cover plates and are fixedly connected with supports on nodes of a steel truss support. A second cover plate is arranged in the space between the first cover plate and the third cover plate, and a foldable rotating shaft plate is arranged between the second cover plate and the third cover plate, so that the second cover plate can turn over relative to the third cover plate. The supporting points of the steel truss can be prevented from being covered by canvas, so that the safety problems of canvas aging and misstep of personnel are solved. The support is in an assembly and local welding mode and can meet the requirements of different steel truss supporting nodes, and the connecting mode is safe and reliable. The cover plate is of an assembly type, performance reduction caused by local water accumulation rusting of the steel truss supporting complex joint or concrete grouting material pollution is prevented, and meanwhile the requirement for telescopic deformation of the steel truss supporting joint can be met through the flip type cover plate and the long-strip-shaped holes formed in the second cover plate.

Description

Technical Field

[0001] The utility model relates to an assembled cover plate structure suitable for prestressed steel trusses, which is used for shielding steel structure nodes, is waterproof and soil-proof, and can be operated by people, belonging to the technical field of building construction. Background Art

[0002] Steel truss supports are mainly used in large-span deep foundation pit projects. Operations in the foundation pit are frequent, and the steel truss supports are exposed to the outdoors for a long time. Rainy weather and complex construction site environment can easily cause untimely drainage of complex nodes at the ends of the steel trusses and solidification of concrete grouting materials on the component nodes, leading to rust and pollution of steel components, thereby affecting the appearance of the steel truss supports and, in severe cases, affecting the load-bearing performance.

[0003] The design of the steel truss end nodes is complex, and canvas is often used to cover them at the construction site, which leads to the following problems:

[0004] 1) The canvas is exposed to the sun for a long time and ages quickly. Grouting material splashes onto the canvas and can easily cause damage over time.

[0005] 2) The canvas has no support and is not suitable for people to step on. It is easy to cause people to step on empty space, which poses a serious safety problem. In addition, the canvas fixing method is not reliable. Utility Model Content

[0006] The purpose of the present invention is to solve the technical problems raised in the above-mentioned background technology and to provide a steel truss supported assembled cover plate structure.

[0007] The utility model adopts the following technical solutions:

[0008] A steel truss supported assembled cover plate structure includes three cover plates, wherein cover plate 1 2 and cover plate 3 4 are fixed cover plates, which are connected and fixed to the bracket 5 on the node of the steel truss support 1; cover plate 2 3 is arranged between cover plate 1 2 and cover plate 3 4, and a foldable rotating shaft plate is arranged between cover plate 2 3 and cover plate 3 4, so that cover plate 2 3 can be flipped relative to cover plate 3 4.

[0009] Preferably, a long strip hole is provided on the cover plate 2 3 , and the protruding rod on the cover plate 1 2 extends into and is limited in the long strip hole, so that the steel truss support 1 can extend or contract when the cover plate 2 3 is closed.

[0010] Preferably, the planar shapes of the three cover plates are adapted to the external shapes of the nodes supported by the steel truss.

[0011] Preferably, the bracket 5 is welded by channel steel 501 and a welding plate, and the top end surface of the welding plate provides a supporting surface for connecting with the cover plate bolts.

[0012] Furthermore, the welding plate includes a welding plate 1 502 located at the top of the channel steel and a welding plate 2 503 located inside the channel steel.

[0013] Furthermore, the welding plate 1 502 is connected to the cover plate through the cover plate bolts 8, the nut 9 is welded on the surface of the steel truss support 1, and the screw 10 is passed through the welding plate 2 503 to connect and fix it to the steel truss support 1.

[0014] Furthermore, the cover plate contacts the upper surface of welding plate 1 502, a nut 9 is welded on the surface of the steel truss support 1, and a screw 10 is used to pass through welding plate 1 502 and welding plate 2 503 and connected to the nut 9, forming a fixed connection between the cover plate, the bracket and the steel truss support.

[0015] Preferably, the bottom of the channel steel 501 is welded to the surface of the steel truss support 1, and the welding plate 3 504 is connected to the cover plate through the cover plate bolts 8.

[0016] Preferably, the steel truss support is a prestressed steel truss support that can be extended and retracted in the length direction.

[0017] The beneficial effects of the present invention are:

[0018] 1) It can avoid using canvas to cover the steel truss support, thereby avoiding the safety problems of canvas aging and people stepping into empty space.

[0019] 2) The bracket is assembled and partially welded, which can adapt to the requirements of different steel truss support nodes, and the connection method is safe and reliable.

[0020] 3) The cover plate is assembled to prevent local water accumulation and rusting at the complex nodes of the steel truss support or pollution of concrete grouting materials, which may lead to performance degradation. At the same time, the long strip holes set on the flip cover plate and the second cover plate can meet the expansion and contraction deformation requirements of the steel truss support nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall rendering of the utility model's steel truss-supported assembled cover structure.

[0022] Figure 2 It is a schematic diagram of the cover composition.

[0023] Figure 3 This is a schematic diagram of the bracket arrangement.

[0024] Figure 4 This is a schematic diagram of the first bracket connection form in Example 1.

[0025] Figure 5 This is a schematic diagram of the second bracket connection form in Example 2.

[0026] Figure 6This is a schematic diagram of the third bracket connection form in Example 3.

[0027] In the figure, 1. Steel truss support, 2. Cover plate 1, 3. Cover plate 2, 4. Cover plate 3, 5. Bracket, 6. Movable spacer, 7. Grouting material, 8. Cover plate bolt, 9. Nut, 10. Screw, 501. Channel steel, 502. Welded plate 1, 503. Welded plate 2, 504. Welded plate 3. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1:

[0030] See also Figure 1-3 A steel truss supported assembled cover plate structure includes three cover plates, wherein cover plate 1 2 and cover plate 3 4 are fixed cover plates, which are connected and fixed to the bracket 5 on the node of the steel truss support 1; cover plate 2 3 is arranged between cover plate 1 2 and cover plate 3 4, and a foldable rotating shaft plate is arranged between cover plate 2 3 and cover plate 3 4, so that cover plate 2 3 can be flipped relative to cover plate 3 4.

[0031] In this embodiment, see Figure 1-2 A long strip hole is provided on the cover plate 2 3 , and the protruding rod on the cover plate 1 2 extends into and is limited in the long strip hole, so that the steel truss support 1 can extend or contract when the cover plate 2 3 is closed.

[0032] In this embodiment, the steel truss support is used to apply prestressed steel truss support, which can be extended and retracted in the length direction. Although the drawings do not specifically show this, the application of prestressed steel truss itself belongs to the existing technology and is understandable.

[0033] In this embodiment, see Figure 1-2 The plane shapes of the three cover plates are adapted to the external shapes of the nodes supported by the steel trusses.

[0034] In this embodiment, the bracket adopts the first connection method:

[0035] See also Figure 4 The bracket 5 is welded together from a channel steel 501 and a welded plate. The top end surface of the welded plate provides a support surface for bolting to the cover plate. The welded plate comprises a welded plate 1 502 located at the top of the channel steel and a welded plate 2 503 located within the channel steel. Welded plate 1 502 is connected to the cover plate via cover plate bolts 8. Nuts 9 are welded to the surface of the steel truss support 1, and screws 10 pass through welded plate 2 503 to secure it to the steel truss support 1.

[0036] Example 2:

[0037] The difference between this embodiment and the first embodiment is that the bracket adopts the second connection method:

[0038] See also Figure 5 The cover plate contacts the upper surface of the welding plate 502, a nut 9 is welded on the surface of the steel truss support 1, and a screw 10 is used to pass through the welding plate 502 and the welding plate 2 503 and connected to the nut 9, forming a fixed connection between the cover plate, the bracket and the steel truss support.

[0039] The rest is the same as in Example 1.

[0040] Example 3:

[0041] The difference between this embodiment and the first and second embodiments is that the bracket adopts the third connection mode:

[0042] See also Figure 6 The bottom of the channel steel 501 is welded to the surface of the steel truss support 1, and the welding plate 504 is connected to the cover plate through the cover plate bolts 8.

[0043] From the above three embodiments, it can be seen that the utility model realizes the following functions and advantages: avoiding the use of canvas to cover the steel truss support points, thereby avoiding the aging of the canvas and the safety issues of people stepping on empty space. The bracket is assembled and partially welded, which can adapt to the requirements of different steel truss support nodes, and the connection method is safe and reliable. The cover plate is assembled to prevent the performance degradation caused by local water accumulation and rust or concrete grouting material pollution at the complex nodes of the steel truss support. At the same time, the long strip holes set on the flip cover plate and the second cover plate can meet the expansion and contraction requirements of the steel truss support nodes.

[0044] The above three items are all optional embodiments of the present invention. Ordinary technicians in this field can also make their own changes or improvements on this basis. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. A steel truss supported assembled cover structure, characterized in that: It comprises three cover plates, wherein the cover plate 1 (2) and the cover plate 3 (4) are fixed cover plates, connected and fixed to the brackets (5) on the nodes of the steel truss support (1); A cover plate 2 (3) is arranged between the cover plate 1 (2) and the cover plate 3 (4), and a foldable rotating shaft plate is arranged between the cover plate 2 (3) and the cover plate 3 (4), so that the cover plate 2 (3) can be turned over relative to the cover plate 3 (4).

2. The steel truss supported assembled cover structure according to claim 1, characterized in that: The second cover plate (3) is provided with an elongated hole, and the protruding rod on the first cover plate (2) extends into and is positioned in the elongated hole, so that the steel truss support (1) can be extended or contracted when the second cover plate (3) is closed.

3. The steel truss supported assembled cover structure according to claim 1, characterized in that: The plane shapes of the three cover plates are adapted to the external shapes of the nodes supported by the steel trusses.

4. The steel truss supported assembled cover structure according to claim 1, characterized in that: The bracket (5) is welded by channel steel (501) and a welding plate, and the top end surface of the welding plate provides a support surface for connecting with the cover plate bolts.

5. The steel truss supported assembled cover structure according to claim 4, characterized in that: The welding plate comprises a welding plate 1 (502) located at the top of the channel steel and a welding plate 2 (503) located inside the channel steel.

6. The steel truss supported assembled cover structure according to claim 5, characterized in that: The welding plate 1 (502) is connected to the cover plate via cover plate bolts (8), a nut (9) is welded on the surface of the steel truss support (1), and a screw (10) is passed through the welding plate 2 (503) to connect and fix it to the steel truss support (1).

7. The steel truss supported assembled cover structure according to claim 5, characterized in that: The cover plate contacts the upper surface of the welding plate 1 (502), a nut (9) is welded on the surface of the steel truss support (1), and a screw (10) is passed through the welding plate 1 (502) and the welding plate 2 (503) and connected to the nut (9), thereby forming a fixed connection between the cover plate, the bracket and the steel truss support.

8. The steel truss supported assembled cover structure according to claim 1, characterized in that: The bottom of the channel steel (501) is welded to the surface of the steel truss support (1), and the welding plate three (504) is connected to the cover plate through the cover plate bolts (8).

9. The steel truss supported assembled cover structure according to claim 1, characterized in that: The steel truss support is used to apply prestressed steel truss support and can be extended and retracted in the length direction.

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