Pushing equipment base using old bridge

Abstract

The utility model relates to a pushing equipment base using an old bridge. The device comprises a pair of profile steel edgings, a plurality of profile steel cross bars which are arranged between the pair of profile steel edgings and are arranged at intervals in the length direction of the profile steel edgings, a device base plate which is in lap joint with the top surfaces of the profile steel cross bars, and a lifting horse stool which is in sliding connection with the bottoms of the profile steel cross bars, the equipment base plate is arranged opposite to the bottom of the pushing equipment, and the lifting split heads are arranged opposite to the top of the old bridge. The old bridge is used as a foundation for base erection, and the advantages that the construction cost of a support system is reduced, and incremental launching construction loads are evenly transmitted are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a jacking equipment base utilizing an old bridge. Background Art

[0002] During inland waterway regulation projects, bridges crossing waterways must meet the clearance requirements (clear width and height) of the waterway planning. Bridges that do not meet these standards must be rebuilt. Existing inland waterway bridges are mostly multi-span, with piers installed within the waterway, which can affect the waterway's navigability. The current solution is to demolish the existing multi-span bridges with piers and construct new single-span bridges in their place. This reconstruction often involves rerouting roads, especially for substandard railway and rail transit bridges, which cannot be rebuilt due to the difficulty of rerouting, the impossibility of reconstruction, the high cost of reconstruction, and the unacceptable negative social impact. This directly results in the inability to implement the waterway according to the planned level, and even affects the overall effectiveness of the inland waterway network.

[0003] The Chinese patent application number CN117026849A filed by the applicant recently discloses a construction method for reconstructing a steel truss arch bridge using an existing bridge, which includes the following steps: after the side span steel truss arch is closed, the lower support, side tie beam, upper support, and end segment of the main span steel truss arch are sequentially erected from bottom to top on the side of the side span steel truss arch close to the main span; after the bridge deck support with a cantilever is erected on the deck of the old bridge, the segment of the middle tie beam is erected to the closing mouth through the cantilever, and the segment is adjusted to complete the closing of the tie beam; the middle segment of the main span steel truss arch is erected on the upper support and the bridge deck support to complete the closing of the main span steel truss arch; temporary wind bracing is installed, slings are installed, the upper support and bridge deck support are removed, the slings are tensioned, and the lower support is removed; in the order from the middle of the span to the side span, the bridge deck of the old bridge is segmented and the cross beam is installed, and the bridge deck system is installed.

[0004] The aforementioned prior art solutions suffer from the following drawbacks: During the construction of the steel truss arch spanning the river, the construction team must first set up walking-type jacking equipment on both sides of the riverbank. This equipment is a critical tool throughout the entire construction process, as it is used to install and jack the steel truss arch structure. After the steel truss arch is installed on these walking-type jacking equipment, construction workers will use them to gradually jack the steel truss arch to the predetermined position in the river. However, to achieve this, a large number of jacking track supports must be erected. These supports not only require precise layout and a stable structure, but also consume a large amount of material and manpower during the construction process. Therefore, while the walking-type jacking equipment plays a vital role in the construction process, the installation of numerous jacking track supports undoubtedly increases the complexity and cost of the construction, which is not a favorable factor for the overall economic benefits of the project. How to optimize the layout and use of the jacking equipment support system to reduce construction costs while ensuring construction safety and quality has become a key issue for the construction team. Utility Model Content

[0005] The problem to be solved by the present invention is to provide a jacking equipment base using an old bridge in response to the above-mentioned deficiencies in the prior art. The old bridge is used as a foundation for erecting the base, thereby achieving the advantages of reducing the construction cost of the support system and uniformly transmitting the jacking construction load.

[0006] The above-mentioned utility model object of the present invention is achieved through the following technical solutions:

[0007] A base for a jacking device utilizing an old bridge comprises a pair of steel side bars, a plurality of steel cross bars arranged between the pair of steel side bars and spaced apart from each other along the length direction of the steel side bars, an equipment pad overlapped on the top surfaces of the steel cross bars, and a lifting saddle slidably connected to the bottom of the steel cross bars, wherein the equipment pad is arranged relative to the bottom of the jacking device, and the lifting saddle is arranged relative to the top of the old bridge.

[0008] By adopting the above technical solution, before the jacking construction is carried out, the base is erected with the old bridge as the foundation. Specifically, the steel cross bars with lifting saddles and the steel side bars can be assembled and welded first to realize the rapid installation and disassembly of the jacking equipment base, which significantly improves the construction efficiency. The base is then erected on the top surface of the old bridge, and according to the installation area and the service life, the top surface of the equipment pad is leveled by sliding the position of the lifting saddle and adjusting the height of the lifting saddle. Then the jacking equipment can be placed on the equipment pad, reducing the demand for new bracket materials and thus saving material costs. In addition, the structural design of the steel side bars and steel cross bars ensures the stability and safety of the jacking equipment, so that the load can be evenly distributed during the jacking construction, avoiding structural damage caused by load concentration. In this way, not only the construction safety is improved, but also the long-term maintenance costs are reduced.

[0009] The utility model is further configured as follows: the steel edge strip is configured as an H-shaped steel, the steel cross bar is configured as an I-shaped steel, and the end of the steel cross bar is inserted into the groove of the steel edge strip and welded and fixed to the inner wall of the steel edge strip.

[0010] By adopting the above technical solution, the use of H-shaped steel provides greater bending and torsional rigidity for the steel edge strips, while the steel cross bars of the I-beam reduce the overall weight while ensuring strength, making the entire jacking equipment base more stable and easy to operate; in addition, the plug-in design of the end of the steel cross bar not only simplifies the installation process, but also improves the reliability of the connection part, ensuring that during the jacking construction process, the equipment base can withstand large loads without deformation; the method of welding and fixing to the inner wall of the steel edge strip further strengthens the connection strength between the steel cross bar and the steel edge strip, providing a safer and more stable support platform for jacking construction.

[0011] The utility model is further configured as follows: a rubber strip is provided on the bottom wall of the section steel edge strip, and the rubber strip is in close contact with the bottom surface of the section steel horizontal strip.

[0012] By adopting the above technical solution, the setting of the rubber strips effectively reduces the direct friction between the steel cross bars and the steel side bars, thereby extending the service life of the equipment; at the same time, the elastic properties of the rubber strips can absorb some vibrations and impacts, further improving the stability and safety during the jacking construction process.

[0013] The utility model is further configured as follows: the equipment pad is composed of ferromagnetic material, and the equipment pad is magnetically adsorbed on these steel horizontal bars.

[0014] By adopting the above technical solution, the use of ferromagnetic materials ensures sufficient adsorption force between the equipment pad and the steel cross bar, which can maintain stability even in complex construction environments. While facilitating installation and disassembly, it can prevent the equipment from slipping or shifting during operation, ensuring construction safety.

[0015] The utility model is further configured as follows: the lifting horse stool includes a slider slidably connected to the steel cross bar, a screw arranged on the slider, a washer arranged on the top of the old bridge, and a threaded sleeve arranged on the washer, the bottom end of the screw extends to the interior of the threaded sleeve and is threadedly connected to the threaded sleeve.

[0016] By adopting the above technical solution, the structural design of the lifting horse stool enables it to flexibly adjust its height to adapt to the top of the old bridge with different flatness and different areas, thereby achieving precise control during the jacking process; among them, the sliding connection between the slider and the steel cross bar ensures the stable movement of the lifting horse stool in the horizontal direction, while the threaded connection between the screw and the threaded sleeve allows fine adjustment in the vertical direction. The setting of the washer not only protects the top of the old bridge from damage, but also enhances the connection strength between the threaded sleeve and the washer, ensuring stability and safety during the jacking process; the design of the entire lifting horse stool enables the base of the jacking equipment to be operated more flexibly and safely during the construction process, significantly improving construction efficiency and quality.

[0017] The utility model is further configured as follows: the lifting horse stool also includes a flange arranged on the threaded sleeve, a plurality of reinforcing ribs arranged between the flange and the washer and spaced apart from each other along the circumference of the threaded sleeve, and a plurality of strip openings opened on the reinforcing ribs.

[0018] By adopting the above technical solution, the setting of the reinforcing ribs significantly improves the structural strength of the threaded sleeve, allowing it to withstand greater pressure without deformation during the pushing process; the strip-shaped mouth design provides an additional heat dissipation channel for the threaded sleeve, effectively preventing heat accumulation caused by long-term work, thereby extending the service life of the equipment; in addition, the presence of the flange not only increases the contact area between the threaded sleeve and the washer, further enhancing the stability of the connection, but also serves as a visual identification, facilitating operation and inspection by construction personnel.

[0019] The present invention is further configured such that the diameter of the flange does not exceed the diameter of the gasket.

[0020] By adopting the above technical solution, it is ensured that during the jacking process, the flange will not exert additional pressure on the gasket, thereby avoiding possible damage to the top of the old bridge.

[0021] The utility model is further configured as follows: the slider is configured as a flexible material.

[0022] By adopting the above technical solution, the flexible material design of the slider enables it to better adapt to the unevenness of different surfaces when in contact with the base of the jacking equipment, thereby improving the stability and safety during the jacking process. This design reduces the direct impact between hard materials, reduces equipment wear and extends the service life; in addition, the slider made of flexible material can provide a certain buffering effect during the jacking process, avoiding unnecessary damage to the jacking structure due to excessive jacking force.

[0023] In summary, the beneficial technical effects of the present invention are as follows: the old bridge is used as the foundation for the base installation, thereby achieving the advantages of reducing the construction cost of the support system and uniformly transmitting the jacking construction load. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the connection relationship between the old bridge, the jacking device and the base of the utility model.

[0025] Figure 2 It is a three-dimensional structural diagram of the base of the utility model.

[0026] Figure 3 It is a schematic diagram of the structure of the base of the utility model when viewed from above.

[0027] In the figure, 1. Steel edge strip; 2. Steel horizontal strip; 3. Rubber strip; 4. Equipment pad; 5. Lifting horse stool; 51. Slider; 52. Screw; 53. Washer; 54. Threaded sleeve; 55. Flange; 56. Reinforcement rib; 57. Strip mouth. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and functions achieved by the present invention clearer and easier to understand, the present invention is further explained below with reference to the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1 , disclosed in the utility model is a base for a jacking device that utilizes an old bridge, comprising a pair of steel edge strips 1, a plurality of steel cross bars 2 arranged between the pair of steel edge strips 1 and spaced apart from each other along the length direction of the steel edge strips 1, a rubber strip 3 arranged on the bottom wall of the steel edge strips 1, an equipment pad 4 composed of ferromagnetic material and magnetically adsorbed on the top surface of these steel cross bars 2, and a lifting horse stool 5 slidably connected to the bottom of the steel cross bars 2. The equipment pad 4 is arranged relative to the bottom of the jacking device, and the lifting horse stool 5 is arranged relative to the top of the old bridge. In addition, the steel edge strip 1 is set as an H-shaped steel, the steel cross bar 2 is set as an I-shaped steel, and the end of the steel cross bar 2 is inserted into the groove of the steel edge strip 1 and welded and fixed to the inner wall of the steel edge strip 1, and the rubber strip 3 is tightly in contact with the bottom surface of the steel cross bar 2.

[0030] The use of H-shaped steel provides greater bending and torsional rigidity for the steel edge strip 1, while the steel cross bar 2 of the I-beam reduces the overall weight while ensuring strength, making the entire base of the jacking equipment more stable and easy to operate; in addition, the plug-in design at the end of the steel cross bar 2 not only simplifies the installation process, but also improves the reliability of the connection part, ensuring that during the jacking construction process, the equipment base can withstand a large load without deformation; the method of welding and fixing it to the inner wall of the steel edge strip 1 further strengthens the connection strength between the steel cross bar 2 and the steel edge strip 1, providing a safer and more stable support platform for jacking construction.

[0031] The provision of the rubber strip 3 effectively reduces the direct friction between the steel cross bar 2 and the steel edge bar 1, thereby extending the service life of the equipment; at the same time, the elastic properties of the rubber strip 3 can absorb some vibrations and impacts, further improving the stability and safety during the jacking construction process.

[0032] The use of ferromagnetic material ensures sufficient adsorption force between the equipment pad 4 and the steel cross bar 2, which can maintain stability even in complex construction environments. While facilitating installation and disassembly, it can prevent the equipment from slipping or shifting during operation, ensuring construction safety.

[0033] The lifting horse stool 5 includes a slider 51 slidably connected to the steel crossbar 2, a screw 52 mounted on the slider 51, a washer 53 arranged on the top of the old bridge, a threaded sleeve 54 mounted on the washer 53, a flange 55 mounted on the threaded sleeve 54, a plurality of reinforcing ribs 56 disposed between the flange 55 and the washer 53 and spaced apart along the circumference of the threaded sleeve 54, and a plurality of strip-shaped openings 57 formed on the reinforcing ribs 56. The slider 51 is configured such that the bottom end of the screw 52 made of a flexible material extends into the interior of the threaded sleeve 54 and is threadedly connected to the threaded sleeve 54. The diameter of the flange 55 does not exceed the diameter of the washer 53.

[0034] Reference Figure 2 and Figure 3 The structural design of the lifting horse stool 5 enables it to flexibly adjust its height to adapt to the top of the old bridge with different flatness and different areas, thereby achieving precise control during the jacking process; among them, the sliding connection between the slider 51 and the steel cross bar 2 ensures the stable movement of the lifting horse stool 5 in the horizontal direction, while the threaded connection between the screw 52 and the threaded sleeve 54 allows fine adjustment in the vertical direction. The setting of the washer 53 not only protects the top of the old bridge from damage, but also enhances the connection strength between the threaded sleeve 54 and the washer 53, ensuring stability and safety during the jacking process; the design of the entire lifting horse stool 5 enables the base of the jacking equipment to be operated more flexibly and safely during the construction process, significantly improving the construction efficiency and quality.

[0035] The provision of reinforcing ribs 56 significantly enhances the structural strength of threaded sleeve 54, enabling it to withstand greater pressure without deformation during the jacking process. The design of strip opening 57 provides an additional heat dissipation channel for threaded sleeve 54, effectively preventing heat accumulation caused by long-term operation, thereby extending the service life of the equipment. In addition, the presence of flange 55 ensures that during the jacking process, flange 55 does not exert additional pressure on gasket 53, thereby avoiding potential damage to the top of the old bridge. It not only increases the contact area between threaded sleeve 54 and gasket 53, further enhancing the stability of the connection, but also serves as a visual marker, facilitating operation and inspection by construction personnel.

[0036] The flexible material design of the slider 51 enables it to better adapt to the unevenness of different surfaces when in contact with the base of the pushing equipment, thereby improving the stability and safety during the pushing process. This design reduces the direct impact between hard materials, reduces equipment wear, and extends the service life; in addition, the slider 51 made of flexible material can provide a certain buffering effect during the pushing process, avoiding unnecessary damage to the pushing structure due to excessive pushing force.

[0037] The implementation principle of this embodiment is: before the jacking construction is carried out, the base is erected with the old bridge as the foundation. Specifically, the steel cross bar 2 with the lifting stool 5 and the steel side bar 1 can be assembled and welded first to realize the rapid installation and disassembly of the jacking equipment base, which significantly improves the construction efficiency. The base is then erected on the top surface of the old bridge, and according to the installation area and the service life, the position of the lifting stool 5 is slid and the height of the lifting stool 5 is adjusted to complete the leveling of the top surface of the equipment pad 4. Then the jacking equipment can be placed on the equipment pad 4, which reduces the demand for new bracket materials and thus saves material costs. In addition, the structural design of the steel side bar 1 and the steel cross bar 2 ensures the stability and safety of the jacking equipment, so that the load can be evenly distributed during the jacking construction process, avoiding structural damage caused by load concentration. In this way, not only the construction safety is improved, but also the long-term maintenance costs are reduced.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A base for a jacking device utilizing an old bridge, characterized in that: The invention comprises a pair of steel side bars (1), a plurality of steel cross bars (2) arranged between the pair of steel side bars (1) and spaced apart from each other along the length direction of the steel side bars (1), an equipment pad (4) overlapped on the top surface of the steel cross bars (2), and a lifting horse stool (5) slidably connected to the bottom of the steel cross bars (2), wherein the equipment pad (4) is arranged relative to the bottom of the jacking equipment, and the lifting horse stool (5) is arranged relative to the top of the old bridge.

2. The base of the jacking equipment using the old bridge according to claim 1, characterized in that: The steel edge strip (1) is configured as an H-shaped steel, the steel cross bar (2) is configured as an I-shaped steel, and the end of the steel cross bar (2) is inserted into the groove of the steel edge strip (1) and welded and fixed to the inner wall of the steel edge strip (1).

3. The base of the jacking equipment using the old bridge according to claim 2, characterized in that: The bottom wall of the steel edge strip (1) is provided with a rubber strip (3), and the rubber strip (3) is in close contact with the bottom surface of the steel horizontal strip (2).

4. The base of the jacking equipment using the old bridge according to claim 1, characterized in that: The equipment pad (4) is made of ferromagnetic material, and the equipment pad (4) is magnetically adsorbed on the steel bars (2).

5. The base of the jacking equipment using the old bridge according to claim 1 is characterized in that: The lifting horse stool (5) includes a slider (51) slidably connected to the steel bar (2), a screw (52) arranged on the slider (51), a washer (53) arranged on the top of the old bridge, and a threaded sleeve (54) arranged on the washer (53), the bottom end of the screw (52) extends into the interior of the threaded sleeve (54) and is threadedly connected to the threaded sleeve (54).

6. The jacking equipment base using the old bridge according to claim 5, characterized in that: The lifting horse stool (5) also includes a flange (55) provided on the threaded sleeve (54), a plurality of reinforcing ribs (56) provided between the flange (55) and the washer (53) and arranged at intervals along the circumference of the threaded sleeve (54), and a plurality of strip-shaped openings (57) opened on the reinforcing ribs (56).

7. The jacking equipment base using the old bridge according to claim 6, characterized in that: The diameter of the flange (55) does not exceed the diameter of the gasket (53).

8. The jacking equipment base using the old bridge according to claim 5, characterized in that: The slider (51) is made of a flexible material.

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