Variable cross-section bridge jacking leveling structure

Abstract

The utility model discloses a variable cross section bridge jacking is with leveling structure relates to bridge jacking leveling technical field, include: base, the top of base is fixed with two support columns, and the staggered connecting column is fixedly arranged between two support columns, multi -purpose support subassembly, and the top of two support columns and staggered connecting column is set to multi -purpose support subassembly. The utility model discloses through the rotation of runner makes the rotation of screw rod, and the rotation of screw rod makes the straight movement of connecting head under the guidance of horizontal groove's orientation limit, and the hollow strip will be deflected to the direction of the both ends of screw rod when moving, to this drives the deflection of connecting disc, and connecting disc drives the deflection of rotating seat through rotating column, and whether the deflection angle of rotating seat is suitable bridge inclination's contact surface is known through the pointing value of pointer and angle scale line during deflection, until the deflection of contact strip board reaches the suitable angle, and it is not only applicable to single variable cross section bridge, but also applicable to the bridge type bridge of inclined cross section, effectively reduces the structure use limited nature.

Description

Technical Field

[0001] This utility model relates to the field of bridge jacking and leveling technology, specifically to a leveling structure for jacking variable cross-section bridges. Background Technology

[0002] Variable cross-section bridges refer to bridge types where the geometric parameters such as cross-sectional height, width, flange thickness, and slab thickness change with location in different span sections or mid-span sections. Common variable cross-section forms include: variable span or stepped cross-section, variable width cross-section, inclined cross-section, and asymmetrical cross-sections such as irregular flanges. Jacking is a common technique in bridge construction, which refers to the gradual horizontal advancement of bridge segments (usually precast or cast-in-place pier segments, box sections, etc.) on one side of the bridge deck or pier using a jacking device to complete the splicing and positioning of the entire bridge. Bridge jacking requires the use of leveling structures, which are specialized support systems used to adjust, position, and maintain the horizontal posture of bridge segments during bridge jacking construction. They typically include components such as sliding bearings, hydraulic jacking systems, guiding devices, and positioning benchmarks.

[0003] A document with publication number CN220246685U discloses a leveling structure for a bridge jacking construction pad beam, relating to the field of leveling technology for bridge jacking construction. It addresses the problem that existing leveling structures, which fix leveling through sealed grouting, cannot be adjusted once solidified, thus affecting subsequent adjustments. The pad beam has several casting connection ports on its upper surface; three leveling structures are located on top of the pad beam, each with connecting plates at both ends and through holes on its surface; a support is located inside the leveling structure, with a hydraulic rod on one side and a hydraulic telescopic rod inside; four connecting ribs are located at the bottom of the leveling structure; connecting frames are installed on both the front and rear ends of the leveling structure, with connecting holes on both sides of each connecting frame.

[0004] The leveling structure disclosed above has a fixed and non-adjustable planar contact surface with the bridge, which is unsuitable for use on bridges with inclined sections, resulting in significant limitations in the use of the leveling device. Utility Model Content

[0005] The purpose of this utility model is to provide a leveling structure for jacking variable cross-section bridges, which solves the problem that the traditional leveling structure for jacking variable cross-section bridges has a fixed and non-adjustable planar contact surface, making it unsuitable for bridges with inclined cross-sections and limiting its application.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: a leveling structure for jacking variable cross-section bridges, comprising: The base has two support columns fixed to its top, and staggered connecting columns are fixedly arranged between the two support columns. A multi-adaptive support assembly is disposed on the top of two support columns and staggered connecting columns. The multi-adaptive support assembly includes a mounting bracket fixed between one end of the two support columns. A rotating seat is rotatably provided on the inner side of the mounting bracket. At least two inner grooves are provided on the top of the rotating seat. Contact strips are slidably provided on the inner side of each of the two inner grooves. Both contact strips are connected to the bottom of the inner wall of the two inner grooves through a buffer connector.

[0007] Preferably, the buffer connector includes a mounting cylinder fixed to the bottom of the inner wall of the inner groove and a mounting post fixed to the bottom of the contact strip plate. One end of the mounting post extends to the inner side of the mounting cylinder. A strong spring is sleeved on the outer side of the mounting post and the mounting cylinder. One end of the strong spring is fixed to the bottom of the contact strip plate, and the other end of the strong spring is fixed to the bottom of the inner wall of the inner groove.

[0008] Preferably, both ends of the contact strip are fixed with connecting pieces, and the inner sides of the two connecting pieces are threaded with bolts.

[0009] Preferably, deflection limiting members are provided on both sides of the mounting frame. The deflection limiting members are used to adjust and fix the deflection angle of the rotating seat. The deflection limiting members include a rotating column fixed to one end of the rotating seat, and one end of the rotating column extends to the outside of the mounting frame.

[0010] Preferably, the mounting frame has transverse grooves on both sides. The deflection limiting component also includes a connecting frame fixed to one side of the mounting frame and a connecting plate fixed to one end of the rotating column. A lead screw is rotatably mounted on the inner side of the connecting frame. One end of the lead screw extends to the outside of the connecting frame and is fixed with a rotating wheel. A connector is threaded onto the outer surface of the lead screw. A hollow strip is fixed to the outer surface of the connecting plate. The connector passes through the hollow strip and the inner side of the transverse groove.

[0011] Preferably, angle scale lines are provided on both sides of the mounting bracket, and a pointer is fixed on the outer surface of the connecting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Rotating the wheel causes the lead screw to rotate, which in turn causes the connector to move horizontally under the guidance and limitation of the transverse groove. During this movement, the hollow strip is deflected towards both ends of the lead screw, thereby causing the connecting plate to deflect. The connecting plate, through the rotating column, causes the rotating seat to deflect. During the deflection, the pointer and angle scale indicate whether the deflection angle of the rotating seat is appropriate for the bridge's inclined contact surface. This process continues until the contact strip deflects to the appropriate angle. This method is not only suitable for single variable cross-section bridges but also for bridges with inclined cross-sections, effectively reducing the limitations of structural use. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is an exploded sectional view of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of part A in the middle.

[0014] The numbers in the image represent: 1. Base; 2. Support column; 3. Interlaced connecting column; 4. Multi-adaptive support assembly; 41. Mounting bracket; 42. Rotating seat; 43. Inner groove; 44. Contact strip plate; 45. Mounting cylinder; 46. Mounting column; 47. Strong spring; 48. Connecting piece; 49. Bolt; 410. Rotating column; 411. Horizontal groove; 412. Connecting bracket; 413. Connecting plate; 414. Lead screw; 415. Rotating wheel; 416. Connector; 417. Hollow bar; 418. Angle scale line; 419. Pointer. Detailed Implementation

[0015] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0016] This embodiment provides a technical solution: a leveling structure for jacking variable cross-section bridges, such as... Figures 1-3 As shown, the system includes a base 1 and a multi-adaptive support assembly 4. Two support columns 2 are fixed to the top of the base 1, and a fixing frame is provided at the bottom of the base 1. The fixing frame is fixed to the leveling structure of the bridge using screws. An interlocking connecting column 3 is fixed between the two support columns 2. The multi-adaptive support assembly 4 is located on top of the two support columns 2 and the interlocking connecting column 3. The multi-adaptive support assembly 4 includes a mounting bracket 41 fixed between one end of the two support columns 2. A rotating seat 42 is rotatably mounted on the inner side of the mounting bracket 41. The top of the rotating seat 42 has at least two inner... The inner sides of the two inner grooves 43 are slidably provided with contact strips 44. Both ends of the contact strips 44 are fixed with connecting pieces 48. The inner sides of the two connecting pieces 48 are threaded with bolts 49. The tops of the contact strips 44 and the connecting pieces 48 are soft pads, which can deform appropriately and fit against the extrusion surface when compressed. The two contact strips 44 are connected to the bottom of the inner walls of the two inner grooves 43 through buffer connectors. The number of buffer connectors can be set according to the length of the contact strips 44 and the size and strength of the buffer connectors themselves.

[0017] The buffer connector includes a mounting cylinder 45 fixed to the bottom of the inner wall of the inner groove 43 and a mounting post 46 fixed to the bottom of the contact strip 44. One end of the mounting post 46 extends to the inner side of the mounting cylinder 45. A strong spring 47 is sleeved on the outer side of the mounting post 46 and the mounting cylinder 45. One end of the strong spring 47 is fixed to the bottom of the contact strip 44, and the other end of the strong spring 47 is fixed to the bottom of the inner wall of the inner groove 43. The strong spring 47 can cause the contact strip 44 to move to a certain extent in the inner groove 43 to adapt to the compression of the bridge contact surface.

[0018] Both sides of the mounting bracket 41 are provided with deflection limiting components, which are used to adjust and fix the deflection angle of the rotating seat 42. The deflection limiting components include a rotating column 410 fixed to one end of the rotating seat 42, one end of the rotating column 410 extending to the outside of the mounting bracket 41, and the rotating column 410 is rotatably connected through the end. Both sides of the mounting bracket 41 are provided with transverse slots 411. The deflection limiting components also include a connecting bracket 412 fixed to one side of the mounting bracket 41 and a connecting plate 413 fixed to one end of the rotating column 410. A lead screw 414 is rotatably mounted on the inner side of the connecting bracket 412, one end of the lead screw 414 extending to the outside of the connecting bracket 412 and fixed with a rotating wheel 415. An arrow can be set on the rotating wheel 415 and marked with an indicator, such as marking "left" where the arrow points. Or "right", which means that rotating in this direction will make the rotating seat 42 rotate in the direction marked. The outer surface of the lead screw 414 is threaded with a connector 416. The outer surface of the connecting plate 413 is fixed with a hollow strip 417. The connector 416 passes through the hollow strip 417 and the inner side of the transverse groove 411. When the hollow strip 417 is vertically downward, the position of the lead screw 414 is in the middle of the hollow strip 417. At this time, the connector 416 is in the middle of the hollow strip 417 and the transverse groove 411. Angle scale lines 418 are provided on both sides of the mounting bracket 41. A pointer 419 is fixed on the outer surface of the connecting plate 413. By observing the direction of the pointer 419 and the angle scale lines 418, it can be determined whether the deflection angle of the rotating seat 42 matches the deflection angle of the bridge support surface.

[0019] In use: The fixing bracket is secured to the leveling structure at the designated location using screws. Based on the inclination angle of the contact surface between the bridge and the rotating seat 42, the rotating seat 42 is first adjusted to match the angle of the bridge contact surface. The lead screw 414 is rotated by rotating the wheel 415. The rotation of the lead screw 414 causes the connector 416 to move horizontally under the guide and limit of the transverse groove 411. During this movement, the hollow bar 417 is deflected towards both ends of the lead screw 414, thereby causing the connecting plate 413 to deflect. The connecting plate 413, through the rotating column 410, drives the rotating seat 42 to deflect. As the connecting plate 413 rotates... The pointer 419 will deflect together. According to the value of the pointer 419 on the angle scale line 418, it can be determined whether the deflection angle of the rotating seat 42 is suitable for the bridge contact surface. The deflection of the rotating seat 42 will drive the contact strip 44 to deflect. When the bridge contact surface and the contact strip 44 come into contact, the contact strip 44 will be pushed by pressure to slide the mounting column 46 into the mounting cylinder 45 and squeeze the strong spring 47. This allows the contact strip 44 to adaptively adjust according to the concavity and convexity of the bridge contact surface and the contact position of the bridge contact surface. Then, the contact strip 44 can be fixed to the contact surface by bolts 49.

[0020] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A leveling structure for jacking variable cross-section bridges, characterized in that, include: The base (1) has two support columns (2) fixed on its top, and staggered connecting columns (3) are fixed between the two support columns (2). The multi-adaptive support assembly (4) is disposed on the top of two support columns (2) and staggered connecting columns (3). The multi-adaptive support assembly (4) includes a mounting bracket (41) fixed between one end of the two support columns (2). A rotating seat (42) is rotatably disposed on the inner side of the mounting bracket (41). At least two inner grooves (43) are provided on the top of the rotating seat (42). Contact strips (44) are slidably disposed on the inner side of the two inner grooves (43). The two contact strips (44) are connected to the bottom of the inner wall of the two inner grooves (43) through buffer connectors.

2. The leveling structure for variable cross-section bridge jacking as described in claim 1, characterized in that, The buffer connector includes a mounting cylinder (45) fixed to the bottom of the inner wall of the inner groove (43) and a mounting post (46) fixed to the bottom of the contact strip (44). One end of the mounting post (46) extends to the inner side of the mounting cylinder (45). A strong spring (47) is sleeved on the outer side of the mounting post (46) and the mounting cylinder (45). One end of the strong spring (47) is fixed to the bottom of the contact strip (44), and the other end of the strong spring (47) is fixed to the bottom of the inner wall of the inner groove (43).

3. The leveling structure for variable cross-section bridge jacking as described in claim 2, characterized in that, Both ends of the contact strip (44) are fixed with connecting pieces (48), and the inner sides of the two connecting pieces (48) are threaded with bolts (49).

4. The leveling structure for variable cross-section bridge jacking as described in claim 3, characterized in that, Both sides of the mounting bracket (41) are provided with deflection limiting members. The deflection limiting members are used to adjust and fix the deflection angle of the rotating seat (42). The deflection limiting members include a rotating column (410) fixed to one end of the rotating seat (42). One end of the rotating column (410) extends to the outside of the mounting bracket (41).

5. The leveling structure for variable cross-section bridge jacking as described in claim 4, characterized in that, The mounting bracket (41) has transverse grooves (411) on both sides. The deflection limiting component also includes a connecting bracket (412) fixed to one side of the mounting bracket (41) and a connecting plate (413) fixed to one end of the rotating column (410). A lead screw (414) rotates on the inner side of the connecting bracket (412). One end of the lead screw (414) extends to the outside of the connecting bracket (412) and is fixed with a rotating wheel (415). A connector (416) is threaded on the outer surface of the lead screw (414). A hollow strip (417) is fixed on the outer surface of the connecting plate (413). The connector (416) passes through the hollow strip (417) and the inner side of the transverse groove (411).

6. The leveling structure for variable cross-section bridge jacking as described in claim 5, characterized in that, Angle scale lines (418) are provided on both sides of the mounting bracket (41), and a pointer (419) is fixed on the outer surface of the connecting plate (413).

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