Supporting beam and top beam connecting structure

Abstract

The utility model relates to the technical field of foundation pit support, and discloses a supporting beam and crown beam connecting structure which comprises a supporting frame, a crown frame and a supporting column, pre-embedded steel plates are fixedly connected to the front side and the rear side of the supporting frame respectively, a plurality of first connecting holes are formed in the adjacent sides of the two pre-embedded steel plates respectively, and a plurality of second connecting holes are formed in the adjacent sides of the two pre-embedded steel plates respectively. A plurality of first connecting holes are formed in the front side of the crown frame, high-strength bolts are in threaded connection with the inner walls of the first connecting holes, a plurality of second connecting holes are formed in the front side of the crown frame, the rear ends of the high-strength bolts penetrate through the first connecting holes and are in threaded connection with the inner walls of the second connecting holes, and limiting plates are fixedly connected to the front side of the crown frame. According to the utility model, the surface of the pre-embedded steel plate is subjected to heat treatment, and the pre-embedded steel plate is tightly butted with the corresponding hole site on the crown frame through the high-strength bolt group to form rigid connection, so that when the supporting beam bears pressure, the limiting plate compresses the spring to absorb impact energy, the pressure on a connecting point is reduced, unnecessary vibration loss is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit enclosure, in particular to a support beam and crown beam connection structure. Background Art

[0002] With the continuous advancement of urbanization, underground space development has gradually become an important part of urban development. Deep foundation pit support engineering technology is particularly important as a key link to ensure the safety of underground engineering construction. Common foundation pit support forms mainly include soil nail walls, rows and underground continuous walls. Among them, the support system is an important part to ensure the stability and safety of the foundation pit. The reasonable design of the support system can not only effectively prevent the occurrence of foundation pit collapse accidents, but also improve construction efficiency and reduce project costs.

[0003] After searching, the Chinese patent announcement number is: CN215053047U, which discloses a support beam connection structure, including multiple support beams, the support beams include an upper wing plate, a lower wing plate and a connecting plate, the upper wing plate and the lower wing plate are arranged parallel to each other, the connecting plate is located between the upper wing plate and the lower wing plate, and the connecting plate is vertically welded to the upper wing plate and the lower wing plate, the upper wing plate and the lower wing plate are each provided with a plurality of first bolt connection holes, the upper wing plate and the lower wing plate are welded with a head plate at both ends in the length direction, the connecting plate and the head plate are vertically welded, the head plate is provided with a second bolt connection hole, a reinforcing rib is welded between the head plate and the connecting plate, the head plates between the multiple support beams abut against each other and are fixedly connected by bolts passing through the second bolt connection holes. The head plate and the connecting plate are welded, and a reinforcing rib is provided between the head plate and the connecting plate, which can greatly improve the connection strength between the support beams. However, in actual use, the above-mentioned device has the problem that welding is usually used between the support beam and the crown beam. Although the welding method has high strength and stability, it is difficult to operate at the construction site, and the welding quality is significantly affected by human factors, making it difficult to ensure long-term reliability. Once damaged, it is difficult to repair and replace. Therefore, a support beam and crown beam connection structure is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a support beam and crown beam connection structure, which aims to improve the problem that the welding method usually adopted between the support beam and the crown beam in the existing technology is not easy to ensure long-term reliability, and once damaged, it is difficult to repair and replace.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a support beam and crown beam connection structure, including a support frame, a crown frame and a support column, the front and rear sides of the support frame are fixedly connected with embedded steel plates, the adjacent sides of the two embedded steel plates are provided with multiple connection holes 1, the inner walls of the multiple connection holes 1 are threadedly connected with high-strength bolts, the front side of the crown frame is provided with multiple connection holes 2, the rear ends of the multiple high-strength bolts pass through the connection hole 1 and are threadedly connected to the inner walls of the connection hole 2, the front side of the crown frame is fixedly connected with a limiting plate, the inner walls of the two limiting plates are fixedly connected with a limiting column, the outer wall of the limiting column is slidably connected with an extrusion plate, the outer wall of the limiting column is fixedly connected with a spring, and an adjustment mechanism is provided at the bottom of the support frame.

[0006] Through the above technical solution: embedded steel plates are provided at both ends of the support beam, which are tightly connected to the corresponding holes on the crown beam through a group of high-strength bolts to form a rigid connection, which greatly enhances the overall bearing capacity and anti-deformation performance of the connection node between the support beam and the crown beam. There are two limit plates and a spring mechanism in the middle. When the support frame is under pressure, the limit plate compresses the spring to absorb the impact energy, reduce the pressure on the connection point, reduce unnecessary vibration loss, and help extend the service life.

[0007] As a further description of the above technical solution:

[0008] The adjusting mechanism includes a fixing plate, the rear side of the fixing plate is fixedly connected to the front side of the supporting column, the front side of the fixing plate is fixedly connected to a connecting piece, the front side of the connecting piece is rotatably connected to hollow column 1, the inner wall of the hollow column 1 is slidably connected to the extension column, the outer wall of the extension column is slidably connected to hollow column 2, the top of the hollow column 2 is rotatably connected to the support plate, the left and right sides of the support plate are threadedly connected to reinforcing bolts, the top of the support plate is fixedly connected to the bottom of the support frame, the front and rear sides of the outer wall of the hollow column 1 are fixedly connected to the mounting plate 1, the front and rear sides of the outer wall of the hollow column 2 are fixedly connected to the mounting plate 2, and the mounting plate 1 and the mounting plate 2 are threadedly connected by adjusting bolts.

[0009] Through the above technical solution: by using hollow column one as a fulcrum, and supporting the support plate at the top of hollow column two and the bottom of the support frame, using the extension column as the main body, extending hollow column one and hollow column two to both sides, and reinforcing the adjusted hollow column one and hollow column two by rotating the adjustment bolt, continuous support of the support frame is achieved, and when the support frame is subjected to downward pressure from top to bottom, better supporting strength can be provided.

[0010] As a further description of the above technical solution:

[0011] The inner bottom of the support plate is fixedly connected with a rubber pad, and the top of the rubber pad is arranged on the bottom of the support frame.

[0012] Through the above technical solution: the rubber pad fits with the bottom of the support frame, which can avoid collisions of the support frame while reducing the buffer.

[0013] As a further description of the above technical solution:

[0014] The bottom of the connecting piece is fixedly connected with a reinforcing plate, and the rear side of the reinforcing plate is fixedly connected to the front side of the fixing plate.

[0015] Through the above technical solution: the firmness between the connecting piece and the fixing plate is strengthened by the reinforcing plate.

[0016] As a further description of the above technical solution:

[0017] A sealing ring is fixedly connected to the outer wall of the high-strength bolt, and the outer wall of the sealing ring is arranged on the inner wall of the second connecting hole.

[0018] Through the above technical solution: the addition of the sealing ring can prevent rainwater from penetrating into the connecting hole 1, thereby improving the sealing performance.

[0019] As a further description of the above technical solution:

[0020] The left and right sides of the support column are fixedly connected with connecting plates, and the tops of the two connecting plates are each provided with a plurality of screw holes.

[0021] Through the above technical solution: the firmness of the support column is improved by the connecting plate, and the screw holes are convenient for later reinforcement connection.

[0022] As a further description of the above technical solution:

[0023] The inner walls of the plurality of screw holes are all threadedly connected with fixing bolts, and the inner diameter of the screw hole is adapted to the diameter of the fixing bolt.

[0024] Through the above technical solution: insert the fixing bolt into the screw hole, and rotate the fixing bolt to achieve the reinforcement of the connecting plate.

[0025] As a further description of the above technical solution:

[0026] The bottoms of the two connecting plates are fixedly connected with buffer pads, and the bottoms of the supporting columns are fixedly connected with a base.

[0027] Through the above technical solution: the buffer pad is arranged between the connecting plate and the base to reduce noise and shaking caused by vibration.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the present invention, the surface of the embedded steel plate has been heat-treated to improve its corrosion resistance and wear resistance, thereby extending its service life. The high-strength bolt group is tightly connected to the corresponding holes on the crown frame to form a rigid connection. The high-strength bolt group uses standard bolts of grade 8.8 or above to ensure that the connection strength reaches the optimal state. When the support beam is under pressure, the limit plate compression spring absorbs the impact energy, reduces the pressure on the connection point, reduces unnecessary vibration loss, and is conducive to extending the service life.

[0030] 2. In the present invention, the bottom of the support frame is supported by the support plate, and the reinforcement bolts on both sides are rotated to reinforce it and the support frame. The hollow column one and the hollow column two are driven to expand to both sides by rotating the adjustment bolts, thereby achieving precise support and improving the firmness of the support frame, avoiding the influence and deformation of the support frame caused by vertical pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of a connection structure between a support beam and a crown beam proposed in the present invention;

[0032] Figure 2 This is a disassembled diagram of the embedded steel plate of the support beam and crown beam connection structure proposed in the utility model;

[0033] Figure 3 This is a schematic structural diagram of a limiting device for a connection structure between a support beam and a crown beam proposed in the present invention;

[0034] Figure 4 This is a structural diagram of a support mechanism of a support beam and crown beam connection structure proposed by the present invention;

[0035] Figure 5 This is a disassembled diagram of the support beam and crown beam connection structure proposed in the utility model.

[0036] Legend:

[0037] 1. Support frame; 2. Adjustment mechanism; 201. Fixing plate; 202. Connecting piece; 203. Hollow column one; 204. Extension column; 205. Hollow column two; 206. Mounting plate one; 207. Mounting plate two; 208. Adjustment bolt; 209. Support plate; 210. Reinforcement bolt; 211. Rubber pad; 212. Reinforcement plate; 3. Crown frame; 4. Support column; 5. Embedded steel plate; 6. Connection hole one; 7. High-strength bolt; 8. Sealing ring; 9. Connection hole two; 10. Limit plate; 11. Limit column; 12. Extrusion plate; 13. Spring; 14. Connecting plate; 15. Screw hole; 16. Fixing bolt; 17. Buffer pad; 18. Base. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] Reference Figure 1 、 Figure 2 and Figure 3 , the utility model provides an embodiment: a support beam and crown beam connection structure, including a support frame 1, a crown frame 3 and a support column 4, the front and rear sides of the support frame 1 are fixedly connected with embedded steel plates 5, the surface of the embedded steel plates 5 is heat-treated, which improves corrosion resistance and wear resistance and prolongs service life, and the adjacent sides of the two embedded steel plates 5 are provided with multiple connection holes 6, and the inner walls of the multiple connection holes 6 are threadedly connected with high-strength bolts 7. The high-strength bolt 7 group adopts standard bolts of grade 8.8 or above to ensure that the connection strength reaches the best state, and the front side of the crown frame 3 is provided with multiple connection holes 29, and the rear ends of the multiple high-strength bolts 7 pass through the connection hole 6 and are threadedly connected to the inner wall of the connection hole 29. The group of high-strength bolts 7 is tightly docked with the corresponding holes on the crown frame 3 to form a rigid connection. The front sides of the crown frame 3 are fixedly connected to the limit plates 10. The inner walls of the two limit plates 10 are fixedly connected to the limit columns 11. The outer walls of the limit columns 11 are slidably connected with the extrusion plates 12. The outer walls of the limit columns 11 are fixedly connected with the springs 13. The bottom of the support frame 1 is provided with an adjustment mechanism 2, two limit plates 10 and a spring mechanism in the middle. When the support beam is under pressure, the limit plates 10 compress the springs 13 to absorb the impact energy, reduce the pressure on the connection points, reduce unnecessary vibration losses, and help to extend the service life. The outer wall of the high-strength bolt 7 is fixedly connected with a sealing ring 8, and the outer wall of the sealing ring 8 is arranged on the inner wall of the second connecting hole 9;

[0040] Specifically, the front and rear sides of the support frame 1 are fixedly connected with embedded steel plates 5. During the manufacturing process, the surface of the embedded steel plates 5 has undergone a heat treatment process to improve its corrosion resistance and wear resistance, thereby effectively extending the service life of the connection structure; a plurality of connection holes 6 are opened on the adjacent side of the two embedded steel plates 5. When the connection holes 6 are opened, their position accuracy and consistency of aperture size are ensured. The inner walls of the plurality of connection holes 6 are designed with threads for threaded connection with high-strength bolts 7. The high-strength bolt 7 group uses standard bolts of grade 8.8 or above to ensure that the connection strength reaches the best state and meets the engineering requirements. On the front side of the crown frame 3, a plurality of connection holes 29 are opened. The position, aperture size and thread specifications of the connection holes 29 match those of the connection holes 6. The rear end parts of multiple high-strength bolts 7 pass through the connecting hole 1 6 and are threadedly connected to the inner wall of the connecting hole 2 9 of the crown frame 3. The high-strength bolt 7 group is tightly connected to the corresponding hole positions on the crown frame 3, forming a strong rigid connection, ensuring the stability and reliability between the support beam and the crown beam; in addition, two limit plates 10 are fixedly connected to the front side of the crown frame 3, and the inner walls of the limit plates 10 are fixedly connected to the limit columns 11. The outer walls of the limit columns 11 are slidably connected with an extrusion plate 12. When the support beam is subjected to external force, the extrusion plate 12 will slide along the outer wall of the limit column 11 and compress the spring 13. The spring 13 absorbs impact energy and reduces the pressure on the connection point, thereby reducing unnecessary vibration loss, which is conducive to extending the service life of the connection structure.

[0041] Reference Figure 1 and Figure 4The adjusting mechanism 2 includes a fixing plate 201, the rear side of the fixing plate 201 is fixedly connected to the front side of the supporting column 4, and the front side of the fixing plate 201 is fixedly connected to a connecting piece 202. The fixing plate 201 and the connecting piece 202 are designed as an integral whole to improve the firmness of the connecting piece 202. The front side of the connecting piece 202 is rotatably connected to a hollow column 1 203, and the inner wall of the hollow column 1 203 is slidably connected to an extension column 204. The outer wall of the extension column 204 is slidably connected to a hollow column 205. The hollow column 1 203 and the hollow column 205 are connected to each other through the extension column 204 to achieve the stretching effect. The top of the hollow column 205 is rotatably connected to a support plate 209, and the left and right sides of the support plate 209 are threadedly connected to reinforcing bolts 210. The bottom of the support frame 1 is supported by the support plate 209, and the reinforcing bolts 210 on both sides are rotated to connect it. The support frame 1 is reinforced, and the top of the support plate 209 is fixedly connected to the bottom of the support frame 1. The front and rear sides of the outer wall of the hollow column 1 203 are fixedly connected to the mounting plate 1 206, and the front and rear sides of the outer wall of the hollow column 205 are fixedly connected to the mounting plate 207. The mounting plate 1 206 and the mounting plate 207 are threadedly connected by an adjusting bolt 208. By rotating the adjusting bolt 208, the hollow column 1 203 and the hollow column 205 are driven to expand to both sides, thereby achieving precise support and improving the firmness of the support frame 1, avoiding the influence and deformation of the support frame 1 caused by vertical pressure, and the inner bottom of the support plate 209 is fixedly connected to a rubber pad 211. The top of the rubber pad 211 is set at the bottom of the support frame 1, and the bottom of the connecting piece 202 is fixedly connected to a reinforcing plate 212. The rear side of the reinforcing plate 212 is fixedly connected to the front side of the fixing plate 201;

[0042] Specifically, the rear side of the fixing plate 201 is fixedly connected to the front side of the support column 4, so that the adjustment mechanism 2 can be stably installed on the support column 4 and is not easy to be displaced; the front side of the fixing plate 201 is fixedly connected to the connecting piece 202, and the front side of the connecting piece 202 is rotatably connected to the hollow column 1 203, and the inner wall of the hollow column 1 203 is slidably connected to the extension column 204, and the outer wall of the extension column 204 is slidably connected to the hollow column 205, so that the hollow column 1 203, the extension column 204 and the hollow column 205 can be connected to each other, and the extension effect is achieved by sliding the extension column 204, and the top of the hollow column 205 is rotatably connected to the support plate 209, which is used to support the bottom of the support frame 1. The left and right sides of the support plate 209 are threadedly connected with reinforcement The fixing bolt 210 is fastened to the support frame 1 by rotating the reinforcing bolt 210, thereby further improving the stability of the support; the top of the support plate 209 is fixedly connected to the bottom of the support frame 1, ensuring a firm connection between the support frame 1 and the adjustment mechanism 2; in addition, the front and rear sides of the outer wall of the hollow column 1 203 are fixedly connected with the mounting plate 1 206, and the front and rear sides of the outer wall of the hollow column 2 205 are also connected with the mounting plate 2 207. The mounting plate 1 206 and the mounting plate 2 207 are threadedly connected by the adjusting bolt 208. By rotating the adjusting bolt 208, the hollow column 1 203 and the hollow column 2 205 are driven to expand to both sides, thereby achieving precise support, which not only improves the firmness of the support frame 1, but also effectively avoids the influence and deformation of the support frame 1 caused by vertical pressure.

[0043] Reference Figure 1 and Figure 5 The left and right sides of the support column 4 are fixedly connected with a connecting plate 14. The tops of the two connecting plates 14 are provided with a plurality of screw holes 15. The inner walls of the plurality of screw holes 15 are threadedly connected with fixing bolts 16. The inner diameter of the screw hole 15 is adapted to the diameter of the fixing bolt 16. The bottoms of the two connecting plates 14 are fixedly connected with a buffer pad 17. The bottom of the support column 4 is fixedly connected with a base 18.

[0044] Specifically, the left and right sides of the support column 4 are fixedly connected with connecting plates 14, and the top areas of the two connecting plates 14 are provided with multiple screw holes 15 for threaded connection with the fixing bolts 16. The inner diameter of the screw holes 15 is fully adapted to the diameter of the fixing bolts 16, ensuring the stability of the connection. The bottoms of the two connecting plates 14 are fixedly connected with buffer pads 17, which can effectively absorb and reduce the impact force caused by external forces, thereby protecting the support column 4 and the connecting plates 14 from damage.

[0045] Working principle: First, the front and rear sides of the support frame 1 are fixedly connected with embedded steel plates 5. The surface of the embedded steel plates 5 has been heat-treated to improve corrosion resistance and wear resistance, thereby extending the service life. The high-strength bolts 7 group are tightly connected to the corresponding holes on the crown frame 3 to form a rigid connection. The high-strength bolts 7 group uses standard bolts of level 8 or above to ensure that the connection strength reaches the optimal state. There are two limit plates 10 and a spring mechanism in the middle. When the support beam is under pressure, the limit plates 10 compress the springs 13 to absorb the impact energy, reduce the pressure on the connection point, reduce unnecessary vibration loss, and help extend the service life.

[0046] In addition, the hollow column 1 203 and the hollow column 2 205 are connected to each other through the extension column 204 to achieve a stretching effect. The bottom of the support frame 1 is supported by the support plate 209, and the reinforcement bolts 210 on both sides are rotated to reinforce it and the support frame 1. The hollow column 1 203 and the hollow column 2 205 are driven to expand to both sides by rotating the adjustment bolt 208, thereby achieving precise support, improving the firmness of the support frame 1, and avoiding the influence and deformation of the support frame 1 caused by vertical pressure.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A support beam and crown beam connection structure, comprising a support frame (1), a crown frame (3) and a support column (4), characterized in that: The front and rear sides of the support frame (1) are fixedly connected with embedded steel plates (5), and the adjacent sides of the two embedded steel plates (5) are provided with a plurality of connection holes (6), and the inner walls of the plurality of connection holes (6) are threadedly connected with high-strength bolts (7). The front side of the crown frame (3) is provided with a plurality of connection holes (9), and the rear ends of the plurality of high-strength bolts (7) pass through the connection hole (6) and are threadedly connected to the inner wall of the connection hole (9). The front side of the crown frame (3) is fixedly connected with a limiting plate (10), and the inner walls of the two limiting plates (10) are fixedly connected with a limiting column (11), and the outer wall of the limiting column (11) is slidably connected with an extrusion plate (12), and the outer wall of the limiting column (11) is fixedly connected with a spring (13). The bottom of the support frame (1) is provided with an adjustment mechanism (2).

2. The support beam and crown beam connection structure according to claim 1, characterized in that: The adjusting mechanism (2) comprises a fixing plate (201), the rear side of the fixing plate (201) is fixedly connected to the front side of the supporting column (4), the front side of the fixing plate (201) is fixedly connected to a connecting piece (202), the front side of the connecting piece (202) is rotatably connected to a hollow column 1 (203), the inner wall of the hollow column 1 (203) is slidably connected to an extension column (204), the outer wall of the extension column (204) is slidably connected to a hollow column 2 (205), the top of the hollow column 2 (205) is rotatably connected to the supporting column (4), and the top of the hollow column 2 (205) is rotatably connected to the supporting column (4). A support plate (209) is movably connected, and the left and right sides of the support plate (209) are both threadedly connected to reinforcement bolts (210), and the top of the support plate (209) is fixedly connected to the bottom of the support frame (1), and the front and rear sides of the outer wall of the hollow column 1 (203) are both fixedly connected to the mounting plate 1 (206), and the front and rear sides of the outer wall of the hollow column 2 (205) are both fixedly connected to the mounting plate 2 (207), and the mounting plate 1 (206) and the mounting plate 2 (207) are threadedly connected via an adjusting bolt (208).

3. The support beam and crown beam connection structure according to claim 2, characterized in that: A rubber pad (211) is fixedly connected to the inner bottom of the support plate (209), and the top of the rubber pad (211) is arranged on the bottom of the support frame (1).

4. The support beam and crown beam connection structure according to claim 2, characterized in that: The bottom of the connecting member (202) is fixedly connected to a reinforcing plate (212), and the rear side of the reinforcing plate (212) is fixedly connected to the front side of the fixing plate (201).

5. The support beam and crown beam connection structure according to claim 1, characterized in that: The outer wall of the high-strength bolt (7) is fixedly connected with a sealing ring (8), and the outer wall of the sealing ring (8) is arranged on the inner wall of the second connecting hole (9).

6. The support beam and crown beam connection structure according to claim 1, characterized in that: The left and right sides of the support column (4) are fixedly connected to connecting plates (14), and the tops of the two connecting plates (14) are each provided with a plurality of screw holes (15).

7. The support beam and crown beam connection structure according to claim 6, characterized in that: The inner walls of the plurality of screw holes (15) are all threadedly connected with fixing bolts (16), and the inner diameter of the screw holes (15) is adapted to the diameter of the fixing bolts (16).

8. The support beam and crown beam connection structure according to claim 6, characterized in that: The bottoms of the two connecting plates (14) are fixedly connected to a buffer pad (17), and the bottom of the support column (4) is fixedly connected to a base (18).

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