Large plate girder middle stiffening rib structure for boiler steel structure connection

Abstract

The utility model discloses a large plate girder middle stiffening rib structure for boiler steel structure connection. The large plate girder middle stiffening rib structure mainly comprises a supporting cross beam I, a supporting vertical beam, a supporting connecting piece, an arc-shaped large plate girder and a damping mechanism. The four sets of supporting vertical beams are arranged on the fixed bottom face, the four sets of supporting cross beams I are arranged between the supporting vertical beams, and the supporting cross beams I are connected with the arc-shaped large plate beam through the supporting connecting pieces. A damping mechanism is arranged under the two groups of arc-shaped large plate girders, and is also arranged on the fixed bottom surface at the same time; the arc-shaped large plate beam is firstly provided with a reinforcing plate and a stiffening rib plate, it is guaranteed that the structure of the arc-shaped large plate beam is not prone to deformation, when the boiler is fixed, a spring I of the arc-shaped large plate beam is matched with a damping system I to absorb surrounding vibration when the boiler works, and then a buffer plate of a damping mechanism at the bottom of the boiler is matched with a spring II and a damping system II; and vertical vibration is absorbed, so that the stability of the structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structures, and particularly relates to a web stiffener structure in the middle of a large plate girder for connecting a boiler steel structure. Background Technique

[0002] During the installation and fixation of boilers, steel structures are mostly used for connection and fixation. Traditional steel structure large plate girders are generally completed by welding. The boiler is fixed between the large plate girders through the steel structure. The steel structure connecting large plate girders formed by welding have problems such as single size, single applicable scenario, and inconvenient disassembly. Moreover, the boiler will generate vibrations of different magnitudes during operation. The large plate girders fixed by welding lack shock absorption and buffering, which is likely to cause metal fatigue of the steel structure and further reduce the structural stability.

[0003] After retrieval, a steel structure of a high-strength boiler steel frame with the authorized publication number of CN 217979309 U in the prior art includes a base. There are a lower fixing groove and a lower spiral hole on the base. A fixing screw rod is fixed in the lower spiral hole. A nut and a lower column are fixed on the fixing screw rod. There are an X-shaped fixing plate, a fixing hole and a spiral hole on the lower column. An upper column is fixed in the spiral hole. There are a thread, a stop block, an upper fixing groove and an upper spiral hole on the upper column. A lower cross beam is arranged under the stop block. There are a lower insertion hole and an upper insertion hole in the lower cross beam. An upper cross beam is arranged in the upper fixing groove. An upper bolt is arranged in the upper spiral hole; this structure strengthens the strength of the boiler steel frame through the lower cross beam and the X-shaped fixing plate; however, it lacks a shock absorption mechanism, and the vibrations generated by the boiler during operation will reduce the stability of the steel structure.

[0004] After retrieval, a steel structure of a stable boiler steel frame with the authorized publication number of CN 220818095 U in the prior art includes a boiler body, a base, a support steel frame and a steel beam seat. Support steel frames are installed on the front and rear sides of the upper end of the base. An adjusting mechanism is installed in each installation hole. A limiting groove is dug in the middle of the upper end of the base. There is an upper fixing frame of the same specification above the support steel frame. Soft pad clamps of the same specification are pasted on the inner sides of the upper fixing frame, the support steel frame and the boiler body in contact. The steel beam seat is installed at the upper ends of the first inclined rod and the second inclined rod. The first inclined rod and the second inclined rod are respectively installed in the limiting groove. The first inclined rod and the second inclined rod cross each other and a rotating shaft is inserted in the middle. Shock absorption springs and damping rods are installed at the positions where the left and right sides of the first inclined rod and the second inclined rod open; this mechanism achieves the purpose of making the steel beam seat more stable by setting shock absorption springs, elastic plates and damping rods. However, its shock absorption springs, elastic plates and damping rods are only arranged at the bottom of the boiler, and the vibrations generated by the boiler during operation are divergent in all directions, so the effect of the provided shock absorption mechanism is limited. Summary of the Invention

[0005] The purpose of the present utility model is to overcome the deficiencies in the prior art and provide a stiffening rib structure in the middle of a large plate girder for boiler steel structure connection. First, a reinforcing plate and a stiffening rib plate are provided on the arc-shaped large plate girder to ensure that its own structure is not easily deformed. When fixing the boiler, the vibration around the boiler during operation is absorbed by Spring I in cooperation with Damping System I, and then the up-and-down vibration is absorbed by the buffer plate of the shock absorption mechanism at the bottom of the boiler in cooperation with Spring II and Damping System II, thereby improving the stability of the structure.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0007] A stiffening rib structure in the middle of a large plate girder for boiler steel structure connection, comprising a support crossbeam I, a support vertical beam, a support crossbeam II, a triangular reinforcing rib, a fixed bottom surface, a support connecting piece, an arc-shaped large plate girder, fastening bolt I, and fastening bolt II; there are four groups of support vertical beams and they are arranged on the fixed bottom surface. There are four groups of support crossbeams I and they are arranged between the support vertical beams. There are multiple groups of triangular reinforcing ribs between the support crossbeam I and the support vertical beam. One side of the support connecting piece is provided with a square opening, and the support crossbeam I is arranged in the square opening of the support connecting piece and is matched with the support connecting piece. The other side of the support connecting piece is arc-shaped, and the arc-shaped side is connected to the arc-shaped large plate girder. The arc-shaped large plate girder, the support connecting piece, and the support crossbeam I are tightly connected by fastening bolt I; there are four groups of support crossbeams II, which are arranged in the grooves on the support crossbeam I, located between two groups of support crossbeams I, and at the same time pass through two groups of arc-shaped large plate girders. The two groups of arc-shaped large plate girders are tightly connected by fastening bolt II; there is a shock absorption mechanism directly below the two groups of arc-shaped large plate girders, and the shock absorption mechanism is also arranged on the fixed bottom surface.

[0008] The arc-shaped large plate girder includes an arc-shaped fixing plate, a semi-circular reinforcing plate, a stiffening rib plate, a reinforcing bar, a clamping plate, Spring I, and Damping System I; there are four groups of semi-circular reinforcing plates and they are fixedly connected to the arc-shaped fixing plate. There are multiple groups of stiffening rib plates between the upper and lower groups of semi-circular reinforcing plates. A reinforcing bar is fixed between the middle two groups of semi-circular reinforcing plates. The reinforcing bar is composed of round steel and is an arc-shaped net as a whole. The connection nodes are provided with circular bases. The reinforcing bar is closely attached to the inner side of the arc-shaped fixing plate. Damping System I is arranged in the circular base at the connection node of the reinforcing bar. Damping System I is connected to the clamping plate, and there is also Spring I between the clamping plate and Damping System I. The clamping plate is provided with strip-shaped protrusions, which can increase the friction when clamping the boiler; when the boiler is fixed between the two groups of arc-shaped large plate girders, the springs I on both sides cooperate with Damping System I to make the clamping plate clamp the boiler tightly. The vibration generated by the boiler during operation is absorbed by the shock absorption of Spring I in cooperation with Damping System I. The upper and lower semi-circular reinforcing plates of the arc-shaped large plate girder cooperate with the stiffening rib plates to ensure that the arc-shaped fixing plate will not deform in a vibrating environment, thereby improving the overall stability of the structure.

[0009] The shock absorption mechanism includes a limit ring, a buffer plate, a mounting base, spring II, and a damping system II; the mounting base is arranged on the fixed bottom plate, multiple groups of damping system II are arranged inside the fixed base, the buffer plate is arranged above the damping system II, spring II is arranged between the buffer plate and the damping system II, and at the same time, the buffer plate is also arranged inside the mounting base, and a limit ring is arranged above the mounting base to prevent the buffer plate from disengaging from the mechanism.

[0010] The beneficial effects of the present utility model compared with the prior art are as follows:

[0011] 1) When the boiler is fixed between two groups of arc-shaped large plate girders, the springs I on both sides of the arc-shaped large plate girders cooperate with the damping system I to clamp the boiler tightly. The clamping plate is provided with strip-shaped protrusions, which can increase the friction force when clamping the boiler, and the vibration generated by the boiler during operation is absorbed by the springs I cooperating with the damping system I;

[0012] 2) The semi-circular reinforcing plates on the upper and lower sides of the arc-shaped large plate girders cooperate with the stiffening rib plates to ensure that the arc-shaped fixing plate will not deform in a vibrating environment, thereby improving the overall stability of the structure;

[0013] 3) Through the cooperation of the buffer plate of the shock absorption mechanism with spring II and damping system II, the vibration generated by the boiler is transmitted and absorbed, improving the stability and reliability of the system. Description of the Drawings

[0014] Att Figure 1 is a schematic diagram of the middle stiffening rib structure of the large plate girder for connecting the boiler steel structure of the present utility model;

[0015] Att Figure 2 is an exploded view of the middle stiffening rib structure of the large plate girder for connecting the boiler steel structure of the present utility model;

[0016] Att Figure 3 is Att Figure 1 in the schematic diagram of the arc-shaped large plate girder structure Figure 1 ;

[0017] Att Figure 4 is Att Figure 1 in the schematic diagram of the arc-shaped large plate girder structure Figure 2 ;

[0018] Att Figure 5 is Att Figure 1 in the exploded view of the arc-shaped large plate girder structure;

[0019] Att Figure 6 is Att Figure 1 in the exploded schematic diagram of the shock absorption mechanism;

[0020] Att Figure 7 is a schematic diagram of the use state of the middle stiffening rib structure of the large plate girder for connecting the boiler steel structure of the present utility model;

[0021] In the figure: 11, support cross beam I; 12, support vertical beam; 13, support cross beam II; 14, triangular stiffener; 15, fixed bottom surface; 16, support connecting piece; 17, arc-shaped large plate beam; 18, shock absorption mechanism; 19, fastening bolt I; 20, fastening bolt II; 101, arc-shaped fixing plate; 102, semi-circular stiffening plate; 103, stiffening rib plate; 104, reinforcement railing; 105, clamping plate; 106, spring I; 107, damping system I; 201, limiting ring; 202, buffer plate; 203, installation base; 204, spring II; 205, damping system II. Specific implementation manner

[0022] For the convenience of understanding by those skilled in the art, the technical solutions of the present utility model will be further specifically described below in conjunction with the attached Figure 1-7 , drawings.

[0023] A large plate beam intermediate stiffening rib structure for boiler steel structure connection, comprising a support cross beam I 11, a support vertical beam 12, a support cross beam II 13, a triangular stiffener 14, a fixed bottom surface 15, a support connecting piece 16, an arc-shaped large plate beam 17, a fastening bolt I 19, and a fastening bolt II 20; four groups of the support vertical beams 12 are provided and arranged on the fixed bottom surface 15, four groups of the support cross beams I 11 are provided and arranged between the support vertical beams 12, multiple groups of triangular stiffeners 14 are provided at the included angle between the support cross beam I 11 and the support vertical beam 12, one side of the support connecting piece 16 is provided with a square opening, the support cross beam I 11 is arranged in the square opening of the support connecting piece 16 and is matched with the support connecting piece 16, the other side of the support connecting piece 16 is arc-shaped, and the arc-shaped side is connected to the arc-shaped large plate beam 17, and the arc-shaped large plate beam 17, the support connecting piece 16, and the support cross beam I 11 are tightly connected by the fastening bolt I 19; four groups of the support cross beams II 13 are provided, arranged in the grooves on the support cross beam I 11, located between two groups of the support cross beams I 11, and at the same time pass through two groups of the arc-shaped large plate beams 17, and the two groups of the arc-shaped large plate beams 17 are tightly connected by the fastening bolt II 20; a shock absorption mechanism is provided directly below the two groups of the arc-shaped large plate beams 17, and the shock absorption mechanism is also arranged on the fixed bottom surface 15.

[0024] The arc-shaped large plate beam 17 includes an arc-shaped fixing plate 101, semi-circular reinforcing plates 102, stiffening rib plates 103, a reinforcing railing 104, a clamping plate 105, a spring I 106, and a damping system I 107. There are four groups of semi-circular reinforcing plates fixedly connected to the arc-shaped fixing plate 101. Between the upper and lower groups of semi-circular reinforcing plates 102, there are multiple groups of stiffening rib plates 103. Between the middle two groups of semi-circular reinforcing plates 102, a reinforcing railing 104 is fixed. The reinforcing railing 104 is composed of round steel, and is integrally an arc-shaped net. The connection nodes are provided with circular bases. The reinforcing railing 104 is closely attached to the inner side of the arc-shaped fixing plate 101. The damping system I 107 is arranged in the circular base of the connection node of the reinforcing railing 104. The damping system I 107 is connected to the clamping plate 105. Between the clamping plate 105 and the damping system I 107, there is also a spring I 106. The clamping plate 105 is provided with strip-shaped protrusions, which can increase the friction when clamping the boiler. When the boiler is fixed between two arc-shaped large plate beams 17, the springs I 106 on both sides cooperate with the damping system I 107 to make the clamping plate 105 clamp the boiler tightly. The vibration generated by the boiler during operation is absorbed by the spring I 106 cooperating with the damping system I 107. The semi-circular reinforcing plates 102 on the upper and lower sides of the arc-shaped large plate beam 17 cooperate with the stiffening rib plates 103 to ensure that the arc-shaped fixing plate 101 will not be deformed in a vibrating environment, thereby improving the overall stability of the structure.

[0025] The shock absorption mechanism 18 includes a limiting ring 201, a buffer plate 202, a mounting base 203, a spring II 204, and a damping system II 205. The mounting base 203 is arranged on the fixed bottom plate. Multiple groups of damping systems II 205 are arranged inside the fixed base. The upper part of the damping system II 205 is provided with a buffer plate 202. Between the buffer plate 202 and the damping system II 205, there is a spring II 204. At the same time, the buffer plate 202 is also arranged inside the mounting base 203. The upper part of the mounting base 203 is provided with a limiting ring 201 to prevent the buffer plate 202 from slipping out of the mechanism.

[0026] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of the present technology make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of the present utility model, they should all belong to the protection scope of the present utility model.

Claims

1. An intermediate stiffening rib structure for a large plate girder used in the connection of a boiler steel structure, comprising a support crossbeam I, a support vertical beam, a support crossbeam II, a triangular stiffener, a fixed bottom surface, a support connecting piece, an arc-shaped large plate girder, a fastening bolt I, and a fastening bolt II; characterized in that There are four groups of the supporting vertical beams which are arranged on the fixed bottom surface. There are four groups of the supporting cross beam I which are arranged between the supporting vertical beams. There are multiple groups of triangular reinforcing ribs between the supporting cross beam I and the supporting vertical beams. One side of the supporting connecting piece is provided with a square opening. The supporting cross beam I is arranged in the square opening of the supporting connecting piece and is matched with the supporting connecting piece. The other side of the supporting connecting piece is arc-shaped, and the arc-shaped side is connected to the arc-shaped large plate beam. The arc-shaped large plate beam, the supporting connecting piece and the supporting cross beam I are tightly connected by the fastening bolt I; There are four groups of the supporting cross beam II which are arranged in the grooves on the supporting cross beam I, located between two groups of the supporting cross beam I, and at the same time also pass through two groups of the arc-shaped large plate beams. The two groups of the arc-shaped large plate beams are tightly connected by the fastening bolt II; The arc-shaped large plate beam includes an arc-shaped fixing plate, a semi-circular reinforcing plate, a stiffening rib plate, a reinforcing fence, a clamping plate, a spring I, and a damping system I; There are four groups of the semi-circular reinforcing plates which are fixedly connected to the arc-shaped fixing plate. There are multiple groups of stiffening rib plates between the upper and lower two groups of the semi-circular reinforcing plates. A reinforcing fence is fixed between the middle two groups of the semi-circular reinforcing plates. The reinforcing fence is composed of round steel and is in an arc-shaped net as a whole. The connection node is provided with a circular base. The reinforcing fence is closely attached to the inner side of the arc-shaped fixing plate. The damping system I is arranged in the circular base of the connection node of the reinforcing fence. The damping system I is connected to the clamping plate. A spring I is also arranged between the clamping plate and the damping system I. The clamping plate is provided with strip-shaped protrusions.

2. The intermediate stiffening rib structure of the large plate girder for boiler steel structure connection according to claim 1, characterized in that There is a shock absorption mechanism directly below the two groups of the arc-shaped large plate beams. The shock absorption mechanism is also arranged on the fixed bottom surface.

3. The intermediate stiffening rib structure of the large plate girder for boiler steel structure connection according to claim 2, characterized in that The shock absorption mechanism includes a limit ring, a buffer plate, a mounting base, a spring II, and a damping system II; The mounting base is arranged on the fixed bottom plate. Multiple groups of the damping systems II are arranged inside the fixed base. The upper part of the damping system II is provided with a buffer plate. A spring II is arranged between the buffer plate and the damping system II. At the same time, the buffer plate is also arranged inside the mounting base. A limit ring is arranged on the upper part of the mounting base to prevent the buffer plate from disengaging from the mechanism.

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