An old bridge bearing replacement construction auxiliary temporary support device

Abstract

The utility model belongs to bridge construction equipment technical field, and we propose a kind of old bridge replacement support construction auxiliary temporary support device, including support column and assembling column;Support column is symmetrically arranged, and the bottom of support column is rotatably provided with base, and multiple support devices are connected together to lift before and after;The top of support column is provided with assembling column, and flange plate is arranged on assembling column and support column, and is connected with each other by flange plate, to extend support point;The top surface of uppermost spring steel plate is fixed with top plate, and the left and right ends of top plate are symmetrically provided with clamping edge;Spring steel plate is arranged between adjacent assembling columns;The modularization splicing design of the present scheme is used to support column and assembling column, rigid connection is realized by detachable flange plate, assembling column quantity can be flexibly increased or decreased according to construction demand, the height requirement of different old bridge support replacement is accurately adapted, it is convenient to operate and strong in universality;Meanwhile, the fastening effect of flange plate makes integrated bearing system after splicing.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, specifically to a temporary support device for replacing bearings on old bridges. Background Technology

[0002] Bridge bearing replacement is a key procedure in bridge maintenance, especially for older bridges where structural load-bearing capacity is reduced and the bottom support surface is prone to irregular tilting, which places stringent requirements on the adaptability, stability, and buffer protection performance of the support device.

[0003] Existing bridge construction support systems still have some shortcomings, such as: 1) Traditional support columns and bases are mostly fixed connection structures, which cannot adjust the support posture independently according to the inclination angle of the support surface at the bottom of the bridge. This makes it difficult for the support column to form a vertical or suitable support angle with the support surface and the top stress surface, which is prone to lateral slippage risk and seriously affects the support safety.

[0004] 2) Existing support height adjustment mostly relies on screw extension or integral structure replacement, which has a limited adjustment range and is cumbersome to operate. It is difficult to accurately adapt to the height requirements when replacing bearings of different old bridges. The support stiffness is easily weakened after adjustment. In addition, the traditional device uses a single rubber component as a buffer, which cannot effectively absorb load impact and vibration energy. The old bridge structure itself has a weak load-bearing capacity and is prone to structural damage or secondary defects due to vibration load.

[0005] For the reasons mentioned above, we propose a temporary support device to assist in the construction of replacing bearings on old bridges. Utility Model Content

[0006] The purpose of this utility model is to provide a temporary support device to assist in the construction of replacing bearings on old bridges, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a temporary support device for the construction of replacing bearings on old bridges, comprising a support column and an assembly column; The support columns are symmetrically arranged, and the bottom of the support columns is rotatably equipped with a base. Multiple support devices are connected one after the other to provide support. The top of the support columns is equipped with an assembly column, and the assembly column and the support column are equipped with flanges and connected to each other through the flanges to extend the support points. A top plate is fixed to the top surface of the uppermost spring steel plate, and clamping edges are symmetrically arranged at the left and right ends of the top plate; spring steel plates are arranged between adjacent assembled columns, and an integrally formed bottom support is arranged in the middle of the spring steel plate, with rubber pads between the upper and lower adjacent bottom supports as a primary buffer. The rubber pad has an I-shaped filling cavity, into which an I-shaped filling pad is inserted. A spring post is set in the middle of the inner cavity of the filling pad as a secondary buffer. Mounting brackets are installed between the support columns. The mounting brackets are evenly spaced with insertion slots, and array support plates are installed in the insertion slots as a three-level buffer.

[0008] Preferably, a rotating hinge is provided between the base and the support column, and the clamping edge is an inwardly curved arc structure used to clamp the bottom and sides of the bridge. The force borne by the top plate is transmitted to the rubber pad and spring steel plate. The number of assembled columns is extended upward and the number of rubber pads is increased accordingly to increase the support height.

[0009] Preferably, the filling pad is made of rubber, and the upper and lower ends of the spring post abut against the inner wall of the filling pad. Multiple spring posts are distributed along the width of the filling pad to form a uniform array. The top of the array support plate abuts against the bottom of the lowest spring steel plate, while the bottom abuts against the bottom wall of the mounting bracket, serving as a support point for the upper part.

[0010] Preferably, the array support plate is composed of a rubber plate and an elastic shell, and the outer side of the array support plate is surrounded by a hoop for fastening multiple array support plates together.

[0011] Preferably, a U-shaped guardrail is provided on the outside of the rubber pad, and the left and right ends of the guardrail are fixed to the nearby assembly posts. A mounting plate is provided on the side of the support column near the mounting frame. The mounting plate is fixed to both sides of the mounting frame by bolts, and the mounting frame is made of spring steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This solution adopts a modular splicing design of support columns and assembled columns, and achieves rigid connection through detachable flanges. The number of assembled columns can be flexibly increased or decreased according to construction needs, accurately adapting to the height requirements of replacing bearings of different old bridges. It is convenient to operate and highly versatile. At the same time, the fastening effect of the flanges makes the spliced ​​structure form an integrated load-bearing system. A three-stage buffer system is constructed, consisting of a primary buffer of spring steel plates, a secondary internal buffer of rubber pads, filling pads, and spring columns, and an array support plate. This system absorbs load impact and vibration energy step by step: the spring steel plates initially dissipate concentrated loads; the rubber pads, together with the filling pads in the internal I-shaped filling cavity and the array spring columns, form a secondary internal buffer; the array support plate further buffers residual loads; and with the auxiliary energy absorption of the spring steel mounting frame, the impact of vibration loads on the fragile structure of old bridges is effectively reduced, thus lowering the risk of structural damage. The spring steel plates between adjacent columns form a transverse tie structure, which, combined with the arc-shaped clamping edge of the top plate, double-limits the lateral relative displacement between the bridge and the support device. The U-shaped guardrail on the outside of the rubber pad can effectively prevent the rubber pad from misaligning or shifting during the buffering process, ensuring the integrity of the buffer structure. The rigid bolt connection between the support column and the mounting frame avoids loosening of the support system and significantly improves the overall lateral stability. The mounting frame and spring steel plates are both made of spring steel, taking into account both elastic buffering performance and structural rigidity, ensuring that the support device does not undergo plastic deformation under long-term stress and maintains the support accuracy.

[0013] The rotating hinge design between the base and the support column allows for flexible adjustment of the support column's posture according to the inclination angle of the bridge's bottom support surface. This ensures that the support column forms a vertical or compatible support angle with the ground and the top load-bearing surface, fundamentally avoiding the risk of lateral slippage during the support process. It is also suitable for irregular support surface scenarios, significantly improving support reliability. Attached Figure Description

[0014] Figure 1 This is a front view of the present utility model; Figure 2 This is a cross-sectional view of the rubber pad of this utility model; Figure 3 This is a side view of the present invention.

[0015] In the diagram: 1 Support column, 2 Base, 3 Assembled column, 4 Flange, 5 Spring steel plate, 6 Rubber pad, 7 Guardrail, 8 Top plate, 9 Clamping edge, 10 Mounting bracket, 11 Array support plate, 12 Mounting plate, 13 Filling cavity, 14 Filling pad, 15 Spring column. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Example: Please see Figure 1-3 The present invention provides the following technical solution: A temporary support device for replacing bearings on an old bridge includes a support column 1 and an assembly column 3. The support column 1 is set on the left and right sides, and a base 2 is set at the bottom of each support column 1. A rotating hinge is set between the base 2 and the support column 1 to adjust the support angle of the support column 1. Multiple support devices are connected together to support the construction components upward. The top of the two support columns 1 is provided with an assembly column 3. Both the upper and lower ends of the assembly column 3 are provided with flanges 4. The top of the support column 1 is also provided with a flange 4. The support column 1 and the assembly column 3 are connected to each other through the flanges 4. The top of the assembly column 3 is connected to the assembly column 3 to extend the support point. Spring steel plates 5 are installed between adjacent assembly columns 3 on the left and right sides. A top plate 8 is installed above the top assembly column 3. Clamping edges 9 are symmetrically arranged at the left and right ends of the top plate 8. The clamping edges 9 are inwardly curved arc structures used to clamp the bottom and sides of the bridge. An integrally formed base is provided in the middle of the spring steel plate 5, and a rubber pad 6 is provided between the upper and lower adjacent bases. The force borne by the top plate 8 can be transmitted to the rubber pad 6 and the spring steel plate 5. The top plate 8 is fixed to the top surface of the uppermost spring steel plate 5. The number of assembly columns 3 is extended upward and the number of rubber pads 6 is increased accordingly to increase the support height. The rubber pad 6 has an I-shaped filling cavity 13, and an I-shaped filling pad 14 is inserted into the filling cavity 13. The filling pad 14 is also made of rubber, and a spring post 15 is provided in the middle of the inner cavity of the filling pad 14. The upper and lower ends of the spring post 15 abut against the inner wall of the filling pad 14. The rear side of the rubber pad 6 has a notch corresponding to the filling cavity 13, and the filling pad 14 is inserted and removed through the notch. Multiple spring columns 15 are distributed along the width of the filling pad 14 to provide secondary internal cushioning for the rubber pad 6; the hardness of the filling pad 14 and the elastic stiffness with the spring columns 15 can be customized to meet different construction needs and facilitate cost control. A U-shaped guardrail 7 is provided on the outside of the rubber pad 6, and the left and right ends of the guardrail 7 are fixed to the nearby assembly post 3. A mounting frame 10 is provided between the two support columns 1. The mounting frame 10 is evenly provided with insertion slots, and an array support plate 11 is provided in the insertion slots. The top of the array support plate 11 abuts against the bottom of the lowest spring steel plate 5, while the bottom abuts against the bottom wall of the mounting frame 10, serving as the upper support point and forming a triple support and buffer. The array support plate 11 is composed of a rubber plate and an elastic shell, and the outer side of the array support plate 11 is surrounded by a hoop for fastening multiple array support plates 11 together. A mounting plate 12 is provided on the side of the support column 1 near the mounting frame 10. The mounting plate 12 is fixed to both sides of the mounting frame 10 by bolts, and the mounting frame 10 is also made of spring steel.

[0019] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0020] Working principle: The rotating hinge between the base 2 and the support column 1 allows for flexible adjustment of the support column 1's support posture according to the inclination angle of the bridge's bottom support surface. This ensures that the support column 1 forms a perpendicular or suitable support angle with the ground and the top load-bearing surface, preventing the risk of lateral slippage during the support process. Simultaneously, multiple support devices are connected front and rear to form a continuous support array, distributing the bridge's local load into a planar support force, reducing the intensity of single-point stress, and ensuring the overall stability of the support.

[0021] The support height is adjusted through modular splicing of support column 1 and assembled column 3. Support column 1 and assembled column 3, as well as the assembled column 3 themselves, are rigidly connected via flanges 4. The detachable design of flanges 4 allows for flexible addition or reduction of the number of assembled columns 3 according to the required support height during construction, thereby adjusting the overall support height to accommodate the height requirements of replacing bearings on different old bridges. After splicing, the flanges 4 secure the assembly, forming an integrated load-bearing system that ensures the support rigidity and stability after height expansion.

[0022] The load at the bottom of the bridge is first applied to the top plate 8. The top plate 8 is attached to the bottom and sides of the bridge by the arc-shaped clamping edge 9, which not only prevents lateral displacement of the support points, but also evenly distributes the concentrated load to the upper spring steel plate 5. The spring steel plate 5 itself has elastic deformation capacity, which can initially absorb the impact of the load and achieve primary buffering.

[0023] The integrally formed base of the spring steel plate 5 transmits the force to the rubber pad 6, which further buffers the load through its own elastic compression. At the same time, the filling pad 14 in the I-shaped filling cavity 13 inside the rubber pad 6 works in concert with the spring column 15. The spring column 15 is arrayed along the width of the filling pad 14, and its upper and lower ends abut against the inner wall of the filling pad 14. When the rubber pad 6 is compressed, it undergoes elastic deformation simultaneously, forming a secondary internal buffer, which effectively reduces the impact of vibration load on the old bridge structure.

[0024] The force transmitted through the rubber pad 6 is ultimately applied to the array support plate 11 on the mounting frame 10. The array support plate 11 is composed of a rubber plate and an elastic shell, with its top abutting against the lower spring steel plate 5 and its bottom supported by the bottom wall of the mounting frame 10, achieving three-level buffering through its own elastic deformation; The hoop on the outside of the array support plate 11 secures multiple plates together, preventing structural instability caused by dispersed stress. In addition, the mounting bracket 10 is made of spring steel, which can help absorb some of the residual load and further optimize the buffering effect.

[0025] The spring steel plates 5 between the adjacent left and right assembly columns 3 form a transverse tie structure, which, together with the arc-shaped clamping edge 9 of the top plate 8, restricts the lateral relative displacement between the bridge and the support device; the U-shaped guardrail 7 on the outside of the rubber pad 6 is fixed to the assembly column 3, which can prevent the rubber pad 6 from being misaligned or shifted during the buffering process, and ensure the integrity of the buffer structure.

[0026] The support column 1 is fixed to the mounting bracket 10 by the mounting plate 12 and bolts, so that the mounting bracket 10 and the support column 1 form a rigid connection, which prevents the support system from loosening under load. The mounting bracket 10 and the spring steel plate 5 are both made of spring steel, which takes into account both elastic buffer and structural rigidity, ensuring that the support device does not undergo plastic deformation under long-term stress.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temporary support device for replacing bearings on old bridges, comprising a support column (1) and an assembly column (3), characterized in that: The support columns (1) are symmetrically arranged, and the bottom of the support column (1) is rotatably provided with a base (2). Multiple support devices are connected together to support each other. The top of the support column (1) is provided with an assembly column (3). The assembly column (3) and the support column (1) are provided with a flange (4) and are connected to each other through the flange (4) to extend the support point. A top plate (8) is fixed on the top surface of the uppermost spring steel plate (5), and clamping edges (9) are symmetrically arranged at the left and right ends of the top plate (8); a spring steel plate (5) is arranged between adjacent assembled columns (3), and an integrally formed bottom support is arranged in the middle of the spring steel plate (5), and a rubber pad (6) is arranged between the upper and lower adjacent bottom supports as a first-level buffer; The rubber pad (6) has an I-shaped filling cavity (13) inside, and an I-shaped filling pad (14) is inserted into the filling cavity (13). A spring column (15) is provided in the middle of the inner cavity of the filling pad (14) as a secondary buffer. A mounting bracket (10) is provided between the support columns (1). The mounting bracket (10) is evenly provided with insertion slots, and an array support plate (11) is provided in the insertion slot as a three-level buffer.

2. The temporary support device for replacing bearings on old bridges according to claim 1, characterized in that: A rotating hinge is provided between the base (2) and the support column (1). The clamping edge (9) is an inwardly curved arc structure used to clamp the bottom and side of the bridge. The force borne by the top plate (8) is transmitted to the rubber pad (6) and the spring steel plate (5). The number of the assembly columns (3) is extended upward and the number of rubber pads (6) is increased accordingly to increase the support height.

3. The temporary support device for replacing bearings on old bridges according to claim 1, characterized in that: The filling pad (14) is made of rubber. The upper and lower ends of the spring column (15) abut against the inner wall of the filling pad (14). There are multiple spring columns (15) distributed along the width of the filling pad (14) to form a uniform array. The top of the array support plate (11) abuts against the bottom of the lowest spring steel plate (5), while the bottom abuts against the bottom wall of the mounting bracket (10) as an upper support point.

4. The temporary support device for replacing bearings on old bridges according to claim 1, characterized in that: The array support plate (11) is composed of a rubber plate and an elastic shell, and the outer side of the array support plate (11) is surrounded by a hoop for fastening multiple array support plates (11) together.

5. The temporary support device for replacing bearings on old bridges according to claim 1, characterized in that: A U-shaped guardrail (7) is provided on the outside of the rubber pad (6), and the left and right ends of the guardrail (7) are fixed to the nearby assembly column (3); A mounting plate (12) is provided on the side of the support column (1) near the mounting frame (10). The mounting plate (12) is fixed to both sides of the mounting frame (10) by bolts, and the mounting frame (10) is made of spring steel.

Images