Box girder supporting structure and steel box girder bridge comprising same

Abstract

The invention discloses a box girder supporting structure and a steel box girder bridge comprising the same, which comprises a sliding seat and a box girder movably clamped at the top of the sliding seat, and further comprises a limiting block movably connected to the side wall of the sliding seat; the sliding plate is movably sleeved on the inner wall of the sliding seat; the clamping rod is fixedly connected to the side wall of the sliding plate through a bolt; the guide assembly is arranged in the sliding base and used for driving the limiting block and the clamping rod to move. According to the box girder supporting structure and the steel box girder bridge comprising the box girder supporting structure, the abutting plate abuts against one side of the box girder, so that the limiting block and the clamping rod are driven to achieve synchronous displacement in the sliding base, the clamping rod can be smoothly inserted into the inner wall of the first clamping groove, butt joint guiding of the box girder is achieved, accurate limiting and guiding in the box girder displacement process are achieved, and the box girder supporting structure is simple in structure and convenient to use. The box girders are effectively prevented from deviating and inclining, the limiting blocks are kept at the set positions through the counter-acting force of the push blocks under the clamping condition that the ratchet wheels are matched with the driving strips, and the attaching tightness between the box girders is improved.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to a box girder support structure and a steel box girder bridge containing the structure. Background Technology

[0002] A steel box girder bridge is a type of bridge that uses steel box girders as its main load-bearing structure. Due to its strong bending and torsional resistance, relatively light weight, and suitability for large-span construction, this structural form has become one of the mainstream choices for modern long-span bridges, especially suspension bridges, cable-stayed bridges, urban overpasses, and cross-line bridges. In order to support the steel box girder during the construction phase and meet the structural stress requirements of the steel box girder, the box girder support structure is the core component for achieving precise docking, stable support, and subsequent welding operations during the jacking construction of the steel box girder. Its performance directly affects the construction accuracy, efficiency, and structural safety. Therefore, during construction, a box girder support structure and a steel box girder bridge containing this structure are required.

[0003] Although existing technologies for steel box girder bridges with box girder support structures offer many advantages, the following problems still exist: During construction, extreme weather conditions, such as heavy rain and snow, are likely to occur. Under extreme weather conditions, the conventional method of directly placing jacks for docking can easily cause the box girders to sway, leading to misalignment during the jacking and docking process. This results in gaps at the ends of adjacent box girders, which seriously affects the quality of subsequent welding and increases the difficulty of welding operations. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] 1. Technical problems to be solved: To address the issues of insufficient guidance accuracy and poor fit of box girder docking under special weather conditions, this invention is proposed.

[0006] 2. Technical Solution: To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A box girder support structure includes a slide block and a box girder movably engaged with the top of the slide block. It further includes: a limiting block movably connected to the side wall of the slide block; a sliding plate movably fitted onto the inner wall of the slide block; a locking rod fixedly connected to the side wall of the sliding plate by bolts; and a guide assembly disposed inside the slide block for displacing the limiting block and the locking rod.

[0007] In a preferred embodiment of the present invention, the guide assembly includes a slider, the side wall of the slide is fixedly connected to the slider by bolts, the inner wall of the slide block is provided with a groove, and the slider is slidably connected to the inner wall of the groove.

[0008] In a preferred embodiment of the present invention, the guide assembly further includes a transverse groove, the inner wall of the slide is provided with the transverse groove, one end of the inner wall of the transverse groove is provided with a drive rod, the top of the outer circumferential wall of the drive rod is sleeved with a gear, the outer circumferential wall of the gear is meshed with a toothed rod, and one end of the toothed rod is coaxially connected to a crossbar.

[0009] In a preferred embodiment of the present invention, a ratchet is sleeved on the outer circumference of the drive rod, and a drive bar is engaged on the surface of the ratchet.

[0010] In a preferred embodiment of the present invention, the limiting block is movably sleeved on the outer circumferential wall of the crossbar, a drive bar is movably connected to the top of the limiting block via a bearing, a limiting rod is movably connected to one side of the drive bar via a bearing, a limiting plate is movably connected to one end of the limiting rod via a bearing, and a side wall of the limiting block is movably connected to one end of the limiting plate via a bearing.

[0011] In a preferred embodiment of the present invention, the sidewall of the limiting block is movably connected to an abutment plate via a damping bearing, one end of the limiting rod is fixedly connected to a telescopic rod via bolts, and the bottom of the telescopic rod is fixedly connected to the top of the limiting block via bolts.

[0012] In a preferred embodiment of the present invention, the sidewall of the transverse groove is welded with a push block by a spring, and one end of the push block abuts against the limiting block.

[0013] In a preferred embodiment of the present invention, a slot 1 is provided on one side of the slide plate, the locking rod is engaged with the inner wall of the slot 1, a slot 2 is provided on the outer circumference of the locking rod, and a locking block is welded to the inner circumference of the slot 1 by a spring, the locking block being engaged with the inner wall of the slot 2.

[0014] In a preferred embodiment of the present invention, the number of the levers is multiple and they are evenly distributed, and the number of the slides is multiple and they are symmetrically distributed.

[0015] As a preferred embodiment of the present invention, a steel box girder bridge includes the box girder support structure described in any one of the above embodiments.

[0016] 3. Beneficial effects: Compared with the prior art, the beneficial effects of the present invention are: This type of box girder support structure uses an abutment plate to abut against one side of the box girder, thereby driving the limiting block and the locking rod to move synchronously inside the slide block. This allows the locking rod to smoothly insert into the inner wall of the locking slot, thus achieving docking guidance of the box girder. It achieves precise limiting and guidance during the displacement of the box girder, effectively preventing the box girder from shifting or tilting. Through the reaction force of the push block, under the locking condition of the ratchet and the drive bar, the limiting block is kept in the set position, improving the tightness of the fit between the box girders and laying a good foundation for subsequent welding operations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an axonometric schematic diagram of the slide structure in this invention; Figure 3 This is a schematic diagram of the axial cross-section of the slide structure in this invention; Figure 4 For the above Figure 3 A schematic diagram of the structure of section A in the middle; Figure 5 This is a cross-sectional axial view of the transverse groove structure in this invention; Figure 6 For the above Figure 5 A schematic diagram of the structure of section B in the middle.

[0018] The following are the labeling instructions in the diagram: 1. Slide; 11. Box girder; 111. Slide groove; 112. Slider; 2. Guide assembly; 21. Slide plate; 211. Slot 1; 212. Locking rod; 213. Locking block; 214. Slot 2; 22. Horizontal groove; 221. Drive rod; 222. Drive bar; 223. Ratchet; 224. Gear; 225. Gear rack; 23. Push block; 24. Crossbar; 25. Limiting block; 251. Limiting bar; 252. Limiting rod; 253. Limiting plate; 254. Telescopic rod; 255. Abutment plate. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] This invention is described in detail with reference to the schematic diagrams. When describing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0021] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0022] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0024] This invention provides an overall structural schematic diagram of a box girder support structure and an embodiment of a steel box girder bridge containing the structure, including: Please see Figures 1-6 The present invention provides a technical solution: See also Figure 1 Figure 6 As shown, a support structure for a box girder 11 includes a slide block 1 and a box girder 11 movably attached to the top of the slide block 1. It also includes: a limiting block 25 movably connected to the side wall of the slide block 1; a sliding plate 21 movably fitted onto the inner wall of the slide block 1; a locking rod 212 fixedly connected to the side wall of the sliding plate 21 by bolts; and a guide assembly 2 located inside the slide block 1, used to drive the limiting block 25 and the locking rod 212 to move, thereby guiding the box girder 11 to dock. Simultaneously, under the action of the push block 23, the limiting block 25 can remain in a certain position, increasing the tightness of the fit between the box girders 11.

[0025] See also Figure 1 Figure 6 As shown, the guide assembly 2 includes a slider 112. The slider 112 is fixedly connected to the side wall of the slide plate 21 by bolts. The inner wall of the slide block 1 is provided with a groove 111. The slider 112 is slidably connected to the inner wall of the groove 111, thereby facilitating the stability of the slide plate 21 during the displacement process of the inner wall of the slide block 1.

[0026] See also Figure 1 Figure 6As shown, the guide assembly 2 also includes a transverse groove 22. The inner wall of the slide block 1 has a transverse groove 22. One end of the inner wall of the transverse groove 22 is provided with a drive rod 221. A gear 224 is sleeved on the top of the outer circumference of the drive rod 221. A toothed bar 225 is meshed on the outer circumference of the gear 224. One end of the toothed bar 225 is coaxially connected to a crossbar 24. After the abutment plate 255 abuts against one end of the box beam 11, under the action of the jack, the limiting block 25 moves with the movement of the box beam 11, thereby driving the crossbar 24 and the gear 224 to rotate, so that the drive rod 221 drives the ratchet 223 to rotate clockwise.

[0027] As shown in the figure, a ratchet 223 is sleeved on the outer circumference of the drive rod 221, and a drive bar 222 is engaged on the surface of the ratchet 223. This facilitates the generation of a reaction force after the limit block 25 is abutted by the push block 23, causing the rack 225 to drive the gear 224 and the drive rod 221 to rotate in opposite directions. This facilitates the engagement of the drive bar 222 with the surface of the ratchet 223, thereby fixing the position of the limit block 25.

[0028] See also Figure 4 As shown, the outer circumferential wall of the crossbar 24 is movably fitted with the limiting block 25. The top of the limiting block 25 is movably connected to the drive bar 222 via a bearing. One side of the drive bar 222 is movably connected to the limiting rod 252 via a bearing. One end of the limiting rod 252 is movably connected to the limiting plate 253 via a bearing. One end of the limiting plate 253 is movably connected to the side wall of the limiting block 25 via a bearing. This facilitates fitting the edge of the box girder 11 and limiting its movement.

[0029] See also Figure 4 As shown, the side wall of the limiting block 25 is movably connected to an abutment plate 255 via a damping bearing. The abutment plate 255 abuts against one end of the box girder 11, allowing it to conform to the box girder 11 and perform initial limiting traction. One end of the limiting rod 252 is fixedly connected to a telescopic rod 254 via bolts. The bottom of the telescopic rod 254 is fixedly connected to the top of the limiting block 25 via bolts. This allows the height of the telescopic rod 254 to be adjusted according to the angle of the side wall of the box girder 11, thereby facilitating better contact between the limiting rod 252 and the limiting plate 253 with the side wall of the box girder 11, thus achieving the effect of limiting and guiding the box girder 11 during displacement.

[0030] See also Figure 5 As shown, the sidewall of the transverse groove 22 is welded with a push block 23 by a spring. One end of the push block 23 abuts against the limiting block 25, which facilitates the limiting block 25 to spring back. Under the action of the drive bar 222 engaging the ratchet 223, the limiting block 25 can stay in its original position, which facilitates the subsequent operation between the box girders 11.

[0031] See also Figure 2 Figure 3As shown, a slot 211 is provided on one side of the slide plate 21. A locking rod 212 is engaged with the inner wall of the slot 211. A slot 214 is provided on the outer circumference of the locking rod 212. A locking block 213 is welded to the inner circumference of the slot 211 via a spring. The locking block 213 is engaged with the inner wall of the slot 214. This allows the locking block 213 to limit the locking rod 212 when it is engaged with the inner circumference of the slot 211, thereby achieving the purpose of solidifying the position of the support plate 21.

[0032] See also Figure 1 Figure 6 As shown, there are multiple clamping rods 212 that are evenly distributed, and multiple sliding plates 21 that are symmetrically distributed. This facilitates the multi-point clamping of the sliding plates 21 and the subsequent welding of the box girder 11.

[0033] In addition, the circuits, electronic components and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the internal structure and method.

[0034] Combination Figures 1-6 The following is a description of a box girder support structure and a steel box girder bridge incorporating this structure, and its specific usage process: 1. In actual use, when in use, the abutment plate 255, which is movably connected to the side wall of the limiting block 25 through the damping bearing, abuts against one end of the box girder 11. Under the pushing action of the jack, the limiting block 25 moves synchronously with the box girder 11, thereby driving the crossbar 24 and gear 224 to rotate, and finally driving the drive rod 221 to drive the ratchet 223 to rotate clockwise, so that the limiting block 25 can move with the box girder 11. 2. When the limiting block 25 is resisted by the pushing block 23, the limiting block 25 is held in place and maintains a springback tendency. The rack 225 will drive the gear 224 and the drive rod 221 to rotate in the opposite direction. At this time, the drive bar 222 will be engaged with the surface of the ratchet 223 to fix the position of the limiting block 25, which will facilitate the subsequent docking and welding of the box girder 11. 3. In addition, one end of the limiting rod 252 is fixedly connected to the telescopic rod 254 by bolts. The bottom of the telescopic rod 254 is fixed to the top of the limiting block 25 by bolts. The height of the telescopic rod 254 can be adjusted according to the angle of the side wall of the box girder 11, so that the limiting rod 252 and the limiting plate 253 fit better against the side wall of the box girder 11, thereby achieving limiting and guiding during the displacement of the box girder 11.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A box girder support structure, comprising a slide block and a box girder movably engaged with the top of the slide block, characterized in that, Also includes: A limiting block is movably connected to the side wall of the slide block; The skateboard is movably fitted onto the inner wall of the slide block; The lever is fixedly connected to the side wall of the slide plate by bolts; A guide component, located inside the slide, is used to drive the displacement of the limiting block and the locking rod.

2. The box girder support structure according to claim 1, characterized in that, The guide assembly includes a slider, the side wall of the slide is fixedly connected to the slider by bolts, the inner wall of the slide block is provided with a groove, and the slider is slidably connected to the inner wall of the groove.

3. The box girder support structure according to claim 1, characterized in that, The guide assembly also includes a transverse groove, the inner wall of the slide is provided with the transverse groove, one end of the inner wall of the transverse groove is provided with a drive rod, the top of the outer circumference of the drive rod is sleeved with a gear, the outer circumference of the gear is meshed with a toothed rod, and one end of the toothed rod is coaxially connected to a crossbar.

4. A box girder support structure according to claim 3, characterized in that, A ratchet is fitted onto the outer circumference of the drive rod, and a drive bar is engaged with the surface of the ratchet.

5. A box girder support structure according to claim 3, characterized in that, The limiting block is movably sleeved on the outer circumference of the crossbar. A drive bar is movably connected to the top of the limiting block via a bearing. A limiting rod is movably connected to one side of the drive bar via a bearing. A limiting plate is movably connected to one end of the limiting rod via a bearing. A side wall of the limiting block is movably connected to one end of the limiting plate via a bearing.

6. A box girder support structure according to claim 5, characterized in that, The side wall of the limiting block is movably connected to an abutment plate via a damping bearing. One end of the limiting rod is fixedly connected to a telescopic rod via bolts, and the bottom of the telescopic rod is fixedly connected to the top of the limiting block via bolts.

7. A box girder support structure according to claim 5, characterized in that, The sidewall of the transverse groove is welded with a push block via a spring, and one end of the push block abuts against the limiting block.

8. A box girder support structure according to claim 1, characterized in that, The slide plate has a slot one on one side, and the locking rod is engaged with the inner wall of the slot one. The outer circumference of the locking rod has a slot two. The inner circumference of the slot one has a locking block welded to it by a spring, and the locking block is engaged with the inner wall of the slot two.

9. A box girder support structure according to claim 8, characterized in that, The number of the levers is multiple and they are evenly distributed, and the number of the slides is multiple and they are symmetrically distributed.

10. A steel box girder bridge, characterized in that, It includes the box girder support structure as described in any one of claims 1-9.

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