Temporary supporting device used in continuous bridge segmented demolition

Abstract

A temporary supporting device for continuous bridge subsection dismantling relates to the technical field of bridge supporting and comprises a bridge subsection temporary supporting device, two lifting assemblies are jointly mounted on the surfaces of one ends of two lifting seats, and a plastic insertion barrel is jointly and movably mounted on the inner walls of two insertion grooves. The reinforcing steel bars and the cement are irrigated into the cement cavity to support the bottom end of the bridge main body beam, the supporting structure formed by casting the reinforcing steel bars and the cement in the cement cavity has high strength and stability, the bottom end of the bridge main body beam can be reliably supported, and the weight and pressure of the bridge structure can be borne for a long time; the service life of the supporting structure is prolonged, by adjusting the size and the shape of the plastic inserting barrel, the supporting structure can adapt to the distances of the lifting bases of different sizes and shapes, the supporting flexibility and applicability are enhanced, and compared with a traditional supporting material, the cost of detaching the plastic inserting barrel is low.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge supports, in particular to a temporary support device used for dismantling a continuous bridge in sections. Background Art

[0002] The segmented temporary support device of the bridge is a temporary structure used to support the bridge during construction. During the construction of the bridge, it is necessary to support various parts of the bridge to ensure the safety of the working area and avoid accidents caused by structural collapse or deformation. The segmented temporary support device can be adjusted and moved according to the progress and needs of the bridge construction, so as to facilitate construction personnel to work on different parts. The temporary support device can reduce the possibility of the bridge structure being affected by external forces and protect the integrity and stability of various parts of the bridge. The segmented temporary support device can reasonably share the bridge's own weight and the load during the construction process, reducing the impact on the overall structure of the bridge.

[0003] When the existing main bridge beam is dismantled, it is necessary to support the lower end of the main bridge beam. There is a gap between the main bridge beam and the bottom end of the bridge, and several temporary support devices of bridge sections need to be placed inside to support the bridge body. When the required temporary support device of the bridge section cannot adjust the height, it is impossible to accurately support the bottom end of the main bridge beam, affecting the support effect and safety, and the manufactured cement columns for support cannot be quickly disassembled. It is difficult to quickly dismantle the cement columns for support, which prolongs the construction time and increases the risk of damage to the bridge structure during the demolition process. The support device cannot effectively support the bottom end of the main bridge beam, and there is a risk of structural instability, which may cause accidents and endanger the safety of construction personnel and the surrounding environment. Utility Model Content

[0004] The utility model provides a temporary support device for dismantling continuous bridge sections, which has the advantages of stable support and low cost, and solves the problem that the temporary support device for bridge sections has poor support effect and cannot adjust the height.

[0005] In order to achieve the purpose of stable support and low cost of a temporary support device for bridge sections, the utility model provides the following technical solutions: a temporary support device for dismantling continuous bridge sections, comprising a temporary support device for bridge sections, wherein two lifting seats are arranged on the temporary support device for bridge sections, two lifting assemblies are commonly installed on one end surface of the two lifting seats, a synchronous rotating power assembly is commonly installed on the outer surfaces of the two lifting assemblies, slots are opened inside the two lifting seats, plastic barrels are movably installed on the inner walls of the two slots, and a cement cavity is opened inside the plastic barrels.

[0006] As a preferred technical solution of the utility model, the lifting assembly includes two first rotating columns and two third rotating columns, the two first rotating columns are movably installed inside one lifting seat, and the two third rotating columns are movably installed inside the other lifting seat.

[0007] As a preferred technical solution of the present utility model, the outer surfaces of the two first rotating columns are both installed with a first bracket, and the outer surfaces of the two third rotating columns are both installed with a second bracket.

[0008] As a preferred technical solution of the utility model, a second rotating column is movably mounted on the outer surface of the first bracket and the outer surface of the second bracket, and a through groove is provided inside the second rotating column.

[0009] As a preferred technical solution of the utility model, a fixing block is installed on the outer surface of the second rotating column, a first thread groove is opened inside the fixing block, and a threaded rod is movably threadedly connected to the inner wall of the first thread groove.

[0010] As a preferred technical solution of the utility model, the synchronous rotation power assembly includes two driven gear rings and a fixed plate, the outer surfaces of the two second rotating columns are commonly installed with a fixed plate, one end surface of the threaded rod extends to the interior of the fixed plate, the two driven gear rings are correspondingly installed on one end surface of the threaded rod, a handle is movably installed inside the fixed plate, a driving gear ring is installed on one end surface of the handle, and the outer surface of the driving gear ring is meshed with the outer surfaces of the two driven gear rings.

[0011] As a preferred technical solution of the utility model, two annular grooves are provided on the outer surface of the fixed plate, and a second thread groove is provided on the outer surface of the active gear ring. A threaded nail is movably connected to the inner wall of the second thread groove through a movable thread, and the outer surface of the threaded nail is in movably contact with the outer surface of the fixed plate.

[0012] Compared with the prior art, the utility model provides a temporary support device for dismantling a continuous bridge in sections, which has the following beneficial effects:

[0013] The temporary support device used for the segmented dismantling of a continuous bridge supports the bottom end of the main beam of the bridge by pouring steel bars and cement into the cement cavity. The support structure formed by the steel bars and cement cast in the cement cavity has high strength and stability and can reliably support the bottom end of the main beam of the bridge. The cement has good weather resistance and corrosion resistance and can withstand the weight and pressure of the bridge structure for a long time, thereby extending the service life of the support structure. By adjusting the size and shape of the plastic insert bucket, it can adapt to the spacing of lifting seats of different sizes and shapes, thereby enhancing the flexibility and applicability of the support. Compared with traditional support materials, the cost of removing the plastic insert bucket is lower, which can save construction costs and improve the economy and sustainability of the project.

[0014] The temporary support device used for dismantling continuous bridge sections rotates in the first threaded groove inside the fixed block through the threaded rod, so that the first bracket, the second bracket, the first rotating column, the second rotating column and the third rotating column cooperate with each other, so that the first bracket and the second bracket drive the lifting seat to rise and fall, so that the top surface of the lifting seat and the main beam of the bridge are fitted together, and the height of the lifting seat is conveniently adjusted to fit the bottom end of the main beam of the bridge, which helps to ensure the stability and safety of the dismantling structure of the main beam of the bridge, and can complete the fitting of the lifting seat and the bottom end of the main beam of the bridge in a limited space, avoiding unnecessary structural complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the lifting assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the synchronous rotating power assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the synchronous rotation power assembly of the utility model from another perspective;

[0019] Figure 5 The utility model is a schematic diagram of the overall structure of the plastic barrel.

[0020] In the figure: 1. temporary support device for bridge sections; 2. lifting seat; 3. first rotating column; 4. first bracket; 5. second rotating column; 6. second bracket; 7. fixing block; 8. threaded rod; 9. first thread groove; 10. through groove; 11. fixing plate; 12. handle; 13. driving gear ring; 14. third rotating column; 15. driven gear ring; 16. annular groove; 17. threaded nail; 18. second thread groove; 19. slot; 20. plastic insert bucket; 21. cement cavity. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] refer to Figure 1-5 The utility model discloses a temporary support device for dismantling continuous bridge sections, including a temporary support device for bridge sections 1, two lifting seats 2 are arranged on the temporary support device for bridge sections 1, two lifting assemblies are installed on one end surface of the two lifting seats 2, and a synchronous rotating power assembly is installed on the outer surface of the two lifting assemblies. The two lifting seats 2 are provided with slots 19 inside, and plastic insert barrels 20 are installed on the inner walls of the two slots 19, and a cement cavity 21 is provided inside the plastic insert barrel 20. A plastic insert barrel 20 is made through the spacing between the two lifting seats 2, and steel bars and cement are irrigated into the cement cavity 21. The plastic insert barrel 20 is inserted into the slot 19 to support the bridge body. The bottom end of the beam is supported, and the support structure formed by the steel bars and cement cast in the cement cavity 21 has high strength and stability, and can reliably support the bottom end of the main beam of the bridge. The cement has good weather resistance and corrosion resistance, and can withstand the weight and pressure of the bridge structure for a long time, thereby extending the service life of the support structure. By adjusting the size and shape of the plastic barrel 20, it can adapt to the spacing of the lifting seats 2 of different sizes and shapes, thereby enhancing the flexibility and applicability of the support. The manufacture and installation of the plastic barrel 20 is relatively simple, and does not require complicated tools or equipment, and the support can be quickly built. Compared with traditional support materials, the plastic barrel 20 has a lower cost, which can save construction costs and improve the economy and sustainability of the project.

[0023] The lifting assembly includes two first rotating columns 3 and two third rotating columns 14, the two first rotating columns 3 are movably installed inside one of the lifting seats 2, and the two third rotating columns 14 are movably installed inside the other lifting seat 2. The outer surfaces of the two first rotating columns 3 are both installed with first brackets 4, and the outer surfaces of the two third rotating columns 14 are both installed with second brackets 6. The outer surfaces of the first brackets 4 and the outer surfaces of the second brackets 6 are jointly movably installed with second rotating columns 5, and a through groove 10 is provided inside the second rotating column 5. A fixing block 7 is installed on the outer surface of one of the second rotating columns 5, and a first thread groove 9 is provided inside the fixing block 7. A threaded rod 8 is movably connected with a thread at the inner wall of the first thread groove 9. The synchronous rotation power assembly includes two driven gear rings 15 and a fixing plate 11. The outer surfaces of the two second rotating columns 5 are jointly installed with the fixing plate 11, and one end surface of the threaded rod 8 extends to the inside of the fixing plate 11. The two driven gear rings 15 are correspondingly installed on one end surface of the threaded rod 8, and a handle 1 is movably installed inside the fixing plate 11. 2. A driving gear ring 13 is installed on one end surface of the handle 12, and the outer surface of the driving gear ring 13 is meshed with the outer surfaces of the two driven gear rings 15. Two annular grooves 16 are provided on the outer surface of the fixing plate 11, and a second thread groove 18 is provided on the outer surface of the driving gear ring 13. A threaded nail 17 is movably connected to the inner wall of the second threaded groove 18. The outer surface of the threaded nail 17 is in movably contact with the outer surface of the fixing plate 11. The threaded rod 8 rotates in the first thread groove 9 inside the fixing block 7, so that the first bracket 4, the second bracket 6, the first rotating column 3, the second rotating column 5 and the third rotating column 14 cooperate with each other, so that the first bracket 4 and the second bracket 6 drive the lifting seat 2 to rise and fall, so that the top surface of the lifting seat 2 fits with the main beam of the bridge, which is convenient for adjusting the height of the lifting seat 2 to fit with the bottom end of the main beam of the bridge, which helps to ensure the stability and safety of the demolition structure of the main beam of the bridge, and can complete the fitting of the lifting seat 2 and the bottom end of the main beam of the bridge in a limited space, avoiding unnecessary structural complexity.

[0024] The working principle and use process of the utility model are as follows: when it is necessary to dismantle the main beam of the bridge continuously, it is necessary to temporarily support the main beam of the bridge first, place several bridge segment temporary support devices 1 under the main beam of the bridge, rotate the handle 12 by hand, the handle 12 drives the driving gear to rotate, the outer surface of the driving gear ring 13 and the outer surfaces of the two driven gear rings 15 are meshed with each other, so that the driving gear ring 13 drives the two driven gear rings 15 to rotate, and the two driven gear rings 15 synchronously drive the threaded rod 8 to rotate synchronously, and the threaded rod 8 is rotated. The fixing block 7 rotates in the first threaded groove 9, so that the first bracket 4, the second bracket 6, the first rotating column 3, the second rotating column 5 and the third rotating column 14 cooperate with each other, so that the first bracket 4 and the second bracket 6 drive the lifting seat 2 to rise and fall, so that the top surface of the lifting seat 2 and the main beam of the bridge are fitted together, which facilitates the adjustment of the height of the lifting seat 2 to fit the bottom end of the main beam of the bridge, helps to ensure the stability and safety of the dismantling structure of the main beam of the bridge, and can complete the fitting of the lifting seat 2 and the bottom end of the main beam of the bridge in a limited space, avoiding unnecessary structural complexity.

[0025] Then insert the threaded nail 17 through the annular groove 16 and screw it into the second threaded groove 18, so that the active gear ring 13 is fixed in the fixing plate 11, so that the lifting seat 2 remains stable, and a plastic insert bucket 20 is made through the spacing between the two lifting seats 2, and the steel bars and cement are irrigated into the cement cavity 21, and the plastic insert bucket 20 is inserted into the slot 19 to support the bottom end of the main beam of the bridge. By adjusting the size and shape of the plastic insert bucket 20, it can adapt to the spacing of lifting seats 2 of different sizes and shapes, thereby enhancing the flexibility and applicability of the support. The manufacture and installation of the plastic insert bucket 20 is relatively simple, and does not require complicated tools or equipment, and the support can be quickly built. Compared with traditional support materials, the plastic insert bucket 20 has a lower cost, which can save construction costs and improve the economy and sustainability of the project.

Claims

1. A temporary support device for dismantling continuous bridge sections, comprising a temporary support device for bridge sections (1), wherein two lifting seats (2) are provided on the temporary support device for bridge sections (1), and characterized in that: Two lifting assemblies are installed on one end surface of the two lifting seats (2), and a synchronous rotation power assembly is installed on the outer surface of the two lifting assemblies. A slot (19) is provided inside the two lifting seats (2), and a plastic insert barrel (20) is movably installed on the inner wall of the two slots (19), and a cement cavity (21) is provided inside the plastic insert barrel (20).

2. A temporary support device for dismantling a continuous bridge in sections according to claim 1, characterized in that: The lifting assembly comprises two first rotating columns (3) and two third rotating columns (14), wherein the two first rotating columns (3) are movably mounted inside one lifting seat (2), and the two third rotating columns (14) are movably mounted inside the other lifting seat (2).

3. The temporary support device for dismantling a continuous bridge in sections according to claim 2 is characterized in that: The outer surfaces of the two first rotating columns (3) are both mounted with a first bracket (4), and the outer surfaces of the two third rotating columns (14) are both mounted with a second bracket (6).

4. A temporary support device for dismantling a continuous bridge in sections according to claim 3, characterized in that: A second rotating column (5) is movably mounted on the outer surface of the first bracket (4) and the outer surface of the second bracket (6), and a through slot (10) is provided inside the second rotating column (5).

5. A temporary support device for dismantling a continuous bridge in sections according to claim 4, characterized in that: A fixing block (7) is installed on the outer surface of the second rotating column (5), a first thread groove (9) is provided inside the fixing block (7), and a threaded rod (8) is movably threadedly connected to the inner wall of the first thread groove (9).

6. A temporary support device for dismantling a continuous bridge in sections according to claim 5, characterized in that: The synchronous rotation power assembly comprises two driven gear rings (15) and a fixed plate (11); the fixed plate (11) is commonly mounted on the outer surfaces of the two second rotating columns (5); one end surface of the threaded rod (8) extends into the interior of the fixed plate (11); the two driven gear rings (15) are correspondingly mounted on one end surface of the threaded rod (8); a handle (12) is movably mounted inside the fixed plate (11); a driving gear ring (13) is mounted on one end surface of the handle (12); the outer surface of the driving gear ring (13) is meshed with the outer surfaces of the two driven gear rings (15).

7. A temporary support device for dismantling a continuous bridge in sections according to claim 6, characterized in that: The outer surface of the fixed plate (11) is provided with two annular grooves (16), the outer surface of the driving gear ring (13) is provided with a second thread groove (18), the inner wall of the second thread groove (18) is movably threadedly connected with a threaded nail (17), and the outer surface of the threaded nail (17) is in movably contact with the outer surface of the fixed plate (11).

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