A support pier support for large-span steel box girder construction

Abstract

The utility model discloses a kind of pier support for large-span steel box girder construction, more specifically relates to bridge construction technical field, a kind of pier support for large-span steel box girder construction, including pier seat, the top of pier seat is fixedly connected with support backing plate, the top of support backing plate is provided with replaceable plate, replaceable plate and support backing plate are two, two replaceable plates and support backing plate are clamped with rotating mechanism between, for adjusting the angle between replaceable plate and support backing plate, the utility model can be positioned sliding to steel box girder by replaceable plate, while after replaceable plate surface is not smooth due to long time use of steel box girder, replaceable plate can be replaced.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a pier support that can be used for the construction of large-span steel box girders. Background Technology

[0002] The steel box girder launching method is increasingly widely used due to its many advantages, such as low construction cost, fast construction speed, good construction stability, strong controllability of construction period, and no interruption of traffic under the bridge during construction. It is especially suitable for bridges that cross busy traffic roads and waterways. The main process is to erect temporary supports under the bridge, hoist the unit steel box girder onto the beam, weld it into a whole, and finally remove the temporary supports.

[0003] A search revealed, for example, a Chinese patent application with publication number CN207079482U, which discloses a support sliding device for the construction of large-span steel box girders. By setting the upper part of the support section as a smooth surface, it can form a smooth mating surface with the support pad, thereby reducing the friction between the two. When the steel box girder is pushed forward, it can drive the support pad to move forward, thereby reducing the friction between the steel box girder and the support pier when the steel box girder moves forward, which helps the steel box girder to move forward smoothly under the action of the pushing device. At the same time, the support sliding device for the construction of large-span steel box girders provided by this utility model has a simple structure, is suitable for use in various construction sites of large-span steel box girders, and has a wide range of applications.

[0004] However, in actual use, when the support plate moves with the steel box girder, if there is a lack of guiding structure (such as slide rails or lateral limiting plates), and it only relies on the "smooth mating surface" to slide freely, it is very easy to deviate from the preset trajectory due to factors such as the eccentricity of the load of the steel box girder and the uneven jacking force. This can cause the support plate to detach from the support part in some areas, the support point of the steel box girder to be suspended, and overturning. Additionally, the support plate may collide with the edge of the support part, generating additional stress and causing structural deformation or damage. Utility Model Content

[0005] The purpose of this invention is to provide a support bracket that can be used in the construction of large-span steel box girders. The steel box girder can be positioned and slid by a replaceable plate. The replaceable plate can also be replaced after the surface of the replaceable plate becomes rough due to long-term use of the steel box girder.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pier support that can be used for the construction of large-span steel box girders, including a pier base, a support pad fixedly connected to the top of the pier base, and a replaceable plate provided on the top of the support pad; There are two replaceable plates and two support pads. A rotating mechanism is engaged between the two replaceable plates and the support pads to adjust the angle between them.

[0007] Preferably, the support pad includes a pad body, a fixing beam is provided on one side of the top of the pad body, and a locking block is provided on the outer wall of the fixing beam.

[0008] Preferably, the outer wall of the fixed beam has a notch.

[0009] Preferably, the replaceable plate includes a plate body, a fixing block is provided on one side of the top of the plate body, a slot located on one side of the fixing block is fixedly connected to the top of the plate body, a card interface is provided on the other side of the top of the plate body, a baffle is engaged inside the slot, and one end of the baffle is engaged inside the card interface.

[0010] Preferably, the top of the plate body is provided with multiple sliding grooves, and the top of the plate body is fixedly connected to a slide rail located on one side of the groove.

[0011] Preferably, the rotating mechanism includes two mounting plates, and a fixed rod is rotatably connected between the mounting plates via a bearing. A first connecting plate and a second connecting plate are respectively fixedly sleeved at both ends of the surface of the fixed rod. A second ear plate is rotatably connected to the outer walls of the first connecting plate and the second connecting plate via a pin, and the second ear plate is snapped onto the outer wall of the replaceable plate.

[0012] Preferably, the top two ends of the mounting plate are rotatably connected to a rotating shaft via bearings, and the two ends of the rotating shaft are symmetrically fitted with first ear plates, the outer wall of the first ear plates being fixedly connected to the outer wall of the support pad.

[0013] Preferably, one of the mounting plates has a fixing post on its outer wall, and the other mounting plate has a fixing cylinder on its outer wall.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model provides a support bracket for the construction of large-span steel box girders. The steel box girder can be fitted and slid through the slide rail to prevent the support pad from detaching partially during the sliding process. After long-term use, the entire replaceable plate will become rough. At this time, the replaceable plate can be easily removed and replaced with a new one to ensure that the surface of the replaceable plate remains smooth. 2. This utility model provides a support bracket for the construction of large-span steel box girders. Through a rotating mechanism, the replaceable plate and the support pad can be rotated together appropriately, so that the two support pads and the replaceable plate assembly form a certain angle. The angle is adapted to the bottom size of the steel box girder, thereby enabling the replaceable plate to make close contact with the bottom of the steel box girder and to better push the steel box girder. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support pad structure of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view at point B in the middle; Figure 5 This is a schematic diagram of the replaceable plate structure of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Pier base; 2. Support pad; 21. Pad body; 22. Fixing beam; 23. Locking block; 24. Notch; 3. Replaceable plate; 31. Plate body; 32. Fixing block; 33. Slide groove; 34. Locking groove; 35. Locking interface; 36. Slide rail; 4. Rotating mechanism; 41. Mounting plate; 42. Fixing rod; 43. First ear plate; 44. Rotating shaft; 45. First connecting plate; 46. Second ear plate; 47. Second connecting plate; 48. Fixing column. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides, for example Figure 1-5 The pier support shown is used for the construction of large-span steel box girders. It includes a pier base 1, and a support plate 2 is fixedly connected to the top of the pier base 1. The support plate 2 includes a plate body 21, which is fixedly connected to the top of the pier base 1. A fixing beam 22 is provided on one side of the top of the plate body 21.

[0020] In order to slide the steel box girder, such as Figure 5 As shown, a replaceable plate 3 is provided on the top of the support pad 2; the replaceable plate 3 includes a plate body 31 with a smooth surface on which the steel box beam slides. A fixing block 32 is provided on one side of the top of the plate body 31, and the fixing block 32 is snapped into the inside of the locking block 23 to fix the replaceable plate 3 to the surface of the support pad 2.

[0021] To prevent the steel box girder from colliding with the pier 1 during sliding, a slot 34 located on one side of the fixing block 32 is fixedly connected to the top of the plate body 31. A slot interface 35 is provided on the other side of the top of the plate body 31. A baffle is engaged inside the slot 34. A rubber buffer pad is provided on the surface of the baffle. One end of the baffle is engaged inside the slot interface 35. After the support pad 2 and the replaceable plate 3 are installed, the baffle is engaged on the top of the outermost replaceable plate 3 to prevent the steel box girder from colliding with the pier 1 during sliding.

[0022] To ensure the stability of the position support pad 2 during the sliding of the steel box girder, multiple grooves 33 are provided on the top of the plate body 31, and sliders adapted to the grooves 33 are provided on the bottom of the steel box girder to limit the sliding of the steel box girder. A slide rail 36 located on one side of the slot 34 is fixedly connected to the top of the plate body 31. Before production, sliders with shapes adapted to the inside of the slide rail 36 are provided on both sides of the steel box girder to limit the steel box girder and prevent the support pad 2 from detaching partially.

[0023] There are two replaceable plates 3 and two support pads 2. In order to ensure that the angle between the replaceable plates 3 and the support pads 2 can be adjusted at the same time, a rotating mechanism 4 is engaged between the two replaceable plates 3 and the support pads 2 to adjust the angle between the replaceable plates 3 and the support pads 2.

[0024] like Figure 3 As shown, the rotating mechanism 4 includes two mounting plates 41, and a fixed rod 42 is rotatably connected between the mounting plates 41 via bearings. A first connecting plate 45 and a second connecting plate 47 are respectively fixedly sleeved at both ends of the surface of the fixed rod 42. The outer walls of the first connecting plate 45 and the second connecting plate 47 are rotated by pins. A second ear plate 46 is connected, and the second ear plate 46 is snapped onto the outer wall of the replaceable plate 3.

[0025] It should be noted that, as a whole, the rotating mechanism 4 can be snapped onto the outer wall of the replaceable plate 3, so it will not affect the replacement of the replaceable plate 3 during use.

[0026] Considering that the bottom of the box girder will have a certain angle, in order to allow the support pad 2 and the replaceable plate 3 to rotate simultaneously during installation and to ensure a tight fit between them, as follows: Figure 3As shown, the top two ends of the mounting plate 41 are rotatably connected to a rotating shaft 44 via bearings. The two ends of the rotating shaft 44 are symmetrically fitted with first ear plates 43. The outer wall of the first ear plate 43 is fixedly connected to the outer wall of the support pad 2. When it is necessary to adjust the angle between the support pad 2 and the replaceable plate 3 assembly and another support pad 2 and replaceable plate 3 assembly, the two assemblies can be subjected to appropriate force by a tool, so that the pin connected to the second ear plate 46 can be rotated appropriately, thereby causing the plate body 31 that is engaged with it to rotate appropriately. The rotation of the plate body 31 will exert a force on the pad body 21, causing the pad body 21 to rotate, thereby realizing the simultaneous rotation of the support pad 2 and the replaceable plate 3, which is convenient to use.

[0027] After the above operations are completed, another support plate 2 needs to be installed, such as... Figure 4 As shown, the outer wall of the fixed beam 22 is provided with a locking block 23, which is engaged with another pad body 21 to fix the two different support pads 2.

[0028] The outer wall of the fixed beam 22 has a notch 24, and a fixed plate is engaged inside the notch 24. The fixed plate can form a horizontal engagement between the two support pads 2, and the locking block 23 can form a vertical engagement between the two support pads 2, realizing the bidirectional engagement between the two support pads 2, making the connection between them more stable.

[0029] Finally, as Figure 3 As shown, one of the mounting plates 41 has a fixing post 48 on its outer wall, and the other mounting plate 41 has a fixing cylinder on its outer wall. During the installation process, the fixing post 48 of the already fixed rotating mechanism 4 is inserted into the not-yet-fixed fixing cylinder to fix the two different rotating mechanisms 4, thereby making the connection of the entire device more stable.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A support pier bracket for use in the construction of a long-span steel box girder, comprising a support pier base (1), characterised in that: The top of the support base (1) is fixedly connected to a support pad (2), and the top of the support pad (2) is provided with a replaceable plate (3). There are two replaceable plates (3) and two support pads (2). A rotating mechanism (4) is engaged between the two replaceable plates (3) and the support pads (2) to adjust the angle between the replaceable plates (3) and the support pads (2).

2. The pier support according to claim 1, wherein: The support pad (2) includes a pad body (21), a fixing beam (22) is provided on one side of the top of the pad body (21), and a locking block (23) is provided on the outer wall of the fixing beam (22).

3. The pier support of claim 2, wherein: The outer wall of the fixed beam (22) has a notch (24).

4. The pier support of claim 1, wherein: The replaceable plate (3) includes a plate body (31), a fixing block (32) is provided on one side of the top of the plate body (31), a slot (34) located on one side of the fixing block (32) is fixedly connected to the top of the plate body (31), a card interface (35) is provided on the other side of the top of the plate body (31), a baffle is engaged inside the slot (34), and one end of the baffle is engaged inside the card interface (35).

5. The pier support of claim 4, wherein: The top of the plate body (31) is provided with multiple sliding grooves (33), and the top of the plate body (31) is fixedly connected to a slide rail (36) located on one side of the slot (34).

6. The pier support of claim 1, wherein: The rotating mechanism (4) includes two mounting plates (41), and a fixed rod (42) is rotatably connected between the mounting plates (41) via a bearing. A first connecting plate (45) and a second connecting plate (47) are respectively fixedly sleeved on both ends of the surface of the fixed rod (42). A second ear plate (46) is rotatably connected to the outer walls of the first connecting plate (45) and the second connecting plate (47) via a pin. The second ear plate (46) is snapped onto the outer wall of the replaceable plate (3).

7. The pier support of claim 6, wherein: The top two ends of the mounting plate (41) are rotatably connected to a rotating shaft (44) via bearings. The two ends of the surface of the rotating shaft (44) are symmetrically fitted with first ear plates (43), and the outer wall of the first ear plates (43) is fixedly connected to the outer wall of the support pad (2).

8. The pier support of claim 6, wherein: One of the mounting plates (41) has a fixing post (48) on its outer wall, and the other mounting plate (41) has a fixing cylinder on its outer wall.

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