Pier body steam curing climbing device and curing method thereof

Abstract

The invention discloses a pier body steam curing climbing device and a curing method thereof, and belongs to the technical field of traction lifting equipment.The pier body steam curing climbing device comprises an operation platform, a steam curing frame and a steam curing system, the steam curing frame is located on the outer side of a wet joint of a box girder by a circle, a groove is formed in the middle of the steam curing frame, and tarpaulin is arranged at the position of the groove; a template assembly is arranged between the steam curing frame and the box girder; the steam curing frame is connected with the operation platform, the operation platform comprises a walking frame and telescopic frame assemblies located on the two sides of the walking frame, the vertical telescopic frame vertically stretches out and draws back through the winch, and the transverse telescopic frame horizontally stretches out and draws back through the hydraulic telescopic assembly; and a pipeline of the steam curing system extends into the groove. The bridge girder erection machine drags the operation platform to drive the steam curing frame to move through holes, meanwhile, the telescopic assembly avoids a pier body blocking structure, and the efficiency of installing the steam curing frame is improved; meanwhile, the full-wrapping steam heat preservation and moisture preservation curing effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of traction and lifting equipment, and particularly relates to a pier body steam curing climbing device and a curing method thereof. Background Art

[0002] At present, the assembly of wet joint segmental beams has not been widely used in plateau areas. For the traditional curing of wet joint concrete of segmental beams, geotextiles are used to sprinkle water on the outer surface of the wet joint beam body, and geotextiles are covered and sprinkled with water on the beam surface. When the wet joint assembled segmental beams in plateau areas are cured by traditional methods, there are problems such as easy cracking of the concrete surface, high manual intensity, low curing efficiency, and great difficulty in later rectification and treatment.

[0003] For the existing curing device, it is necessary to set up a curing frame at the position of the wet joint, and then pass steam into the closed space formed by the curing frame through the steam curing system, so as to carry out wrapped steam heat preservation and moisture preservation curing for the wet joint concrete.

[0004] However, for the existing curing device, it is necessary to set up a scaffold and then install a curing frame for curing after the installation of each segment of assembled box girder. It is necessary to additionally set up a scaffold for curing and installation for each wet joint of the box girder. The whole curing work is time-consuming and laborious. The curing device cannot be quickly transferred along with the progress of box girder assembly and cannot pass through the pier.

[0005] Therefore, there is an urgent need for a traction and pier-passing device for the curing system to improve the curing efficiency while ensuring the curing effect. Summary of the Invention

[0006] The purpose of the invention is to provide a pier body steam curing climbing device and a curing method thereof to solve the problems in the background art.

[0007] The purpose of the invention is realized by the following technical solutions:

[0008] A pier body steam curing climbing device and a curing method thereof include an operation platform, a steam curing frame, and a steam curing system.

[0009] The steam curing frame is located around the outside of the wet joint of the box girder. A groove is provided in the middle of the steam curing frame, and a tarpaulin is provided at the groove. A template assembly is provided between the steam curing frame and the box girder.

[0010] The steam curing frame is connected to the operation platform. The operation platform is a Π-shaped structure frame arranged on the top and both sides of the box girder. The operation platform includes a walking frame and telescopic frame assemblies on both sides of the walking frame. A track and a guide wheel assembly are provided between the walking frame and the box girder. The operation platform is connected to the bridge erecting machine through a traction rope.

[0011] The telescopic frame assembly is of an L-shaped structure. A construction passage is provided on the telescopic assembly. The telescopic frame assembly includes a vertical telescopic frame, a horizontal telescopic frame, a winch, and a hydraulic telescopic assembly. The horizontal telescopic frame and the hydraulic telescopic assembly are located below the vertical telescopic frame. The winch is located on the walking frame. The vertical telescopic frame vertically telescopes through the winch, and the horizontal telescopic frame horizontally telescopes through the hydraulic telescopic assembly;

[0012] The steam curing system is connected to the walking frame, and the pipeline of the steam curing system extends into the groove.

[0013] Further, the steam curing frame includes a beam surface support and a beam bottom support. A tie rod is provided between the beam bottom support and the box girder. Holes are reserved at the positions of the box girder corresponding to the tie rods. The tie rod passes through the beam bottom support and extends into the box girder through the holes.

[0014] Further, an internal curing frame is provided at the position corresponding to the wet joint in a circle inside the box girder. The middle of the internal curing frame is also of a concave structure. A tarpaulin is laid on the internal curing frame. The internal curing frame is communicated with the steam curing frame through holes.

[0015] Further, the vertical telescopic frame and the horizontal telescopic frame are of a truss telescopic structure. The vertical telescopic frame is located on both sides of the box girder. The support frame is fixed to the outer frame of the vertical telescopic frame. The steel wire rope of the winch is connected to the inner frame of the vertical telescopic frame.

[0016] Further, the outer frame of the horizontal telescopic frame is fixed to the bottom end of the inner frame of the vertical telescopic frame. One end of the hydraulic telescopic assembly is connected to the outer frame of the horizontal telescopic frame, and the other end of the hydraulic telescopic assembly is connected to the inner frame of the horizontal telescopic frame.

[0017] Further, the support frame is of a stepped structure. The construction passage is located on one side of the support frame and the top of the horizontal telescopic frame.

[0018] Further, a circle of sealing sponge is provided on the contact surface between the tarpaulin and the box girder.

[0019] Further, the operation platform and the steam curing frame are both made of detachable steel structures.

[0020] Further, remote temperature and humidity sensors are provided in both the steam curing frame and the internal curing frame. The remote temperature and humidity sensors are electrically connected to the steam curing system.

[0021] The beneficial effects of the present invention are:

[0022] 1) The traction operation platform of the bridge erecting machine drives the steam curing rack to move across the hole, and at the same time, it avoids the pier body blocking structure through the telescopic component. The operation platform does not need to be disassembled and assembled repeatedly, and can be cycled and used after one installation, improving the efficiency of installing the steam curing rack.

[0023] 2) Immediately after the concrete is poured, start the steam curing system to carry out the whole-process and full-wrap steam heat preservation and moisture preservation curing. The steam curing system automatically monitors the curing effect in real time to ensure the temperature and humidity of the wet joint curing, improving the curing quality of the wet joint concrete and reducing the hidden danger of cracks caused by insufficient curing of the concrete.

[0024] 3) Carry out heat preservation and moisture preservation on both sides of the wet joint through steam to further improve the curing effect. Brief Description of the Drawings

[0025] Figure 1 It is a working schematic diagram of a pier steam curing climbing device and its curing method of the present invention;

[0026] Figure 2 It is a three-dimensional view of a pier steam curing climbing device and its curing method of the present invention;

[0027] Figure 3 It is a front view of a pier steam curing climbing device and its curing method of the present invention;

[0028] Figure 4 It is a side view of a pier steam curing climbing device and its curing method of the present invention;

[0029] Figure 5 It is a top view of a pier steam curing climbing device and its curing method of the present invention;

[0030] In the figure, 1 - box girder, 2 - operation platform, 21 - walking frame, 22 - vertical telescopic frame, 23 - horizontal telescopic frame, 24 - winch, 25 - hydraulic telescopic component, 26 - track and guide wheel component, 27 - support frame, 28 - ladder, 3 - steam curing rack, 31 - beam surface support, 32 - beam bottom support, 33 - groove, 34 - tarpaulin, 35 - tie rod, 36 - internal curing rack. Detailed Embodiment

[0031] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Refer to Figures 1-5 , the present invention provides a technical solution:

[0033] As Figures 1-5 shown, a pier body steam curing climbing device and its curing method include an operation platform 2, a steam curing frame 3 and a steam curing system.

[0034] The steam curing frame 3 is located in a circle outside the wet joint of the box girder 1. A groove 33 is provided in the middle of the steam curing frame 3. A tarpaulin 34 is provided at the groove 33. A formwork assembly is provided between the steam curing frame 3 and the box girder 1.

[0035] The steam curing frame 3 is connected to the operation platform 2. The operation platform 2 is a Π-shaped structural frame and is arranged on the top and both sides of the box girder 1. The operation platform 2 includes a walking frame 21 and telescopic frame assemblies on both sides of the walking frame 21. A track and a guide wheel assembly 26 are provided between the walking frame 21 and the box girder 1. The operation platform 2 is connected to the bridge erecting machine through a towing rope.

[0036] The telescopic frame assembly is an L-shaped structure. A construction passage is provided on the telescopic assembly. The telescopic frame assembly includes a vertical telescopic frame 22, a horizontal telescopic frame 23, a winch 24 and a hydraulic telescopic assembly 25. The horizontal telescopic frame 23 and the hydraulic telescopic assembly 25 are located below the vertical telescopic frame 22. The winch 24 is located on the walking frame 21. The vertical telescopic frame 22 is vertically telescoped through the winch 24. The horizontal telescopic frame 23 is horizontally telescoped through the hydraulic telescopic assembly 25.

[0037] The steam curing system is connected to the walking frame 21. The pipeline of the steam curing system extends into the groove 33.

[0038] Through the above technical solution, when the box girder 1 is assembled by the bridge erecting machine, the operation platform 2 is towed by the bridge erecting machine to move to the gap between adjacent box girders 1. At this time, a construction passage is formed through the connection of the telescopic frame assembly. Workers can install the formwork assembly outside the wet joint in a circle, and then install the steam curing frame 3 outside the formwork assembly.

[0039] Further, the steam curing frame 3 includes a beam surface support 31 and a beam bottom support 32. A tie rod 35 is provided between the beam bottom support 32 and the box girder 1. A hole is reserved at the position of the box girder 1 corresponding to the tie rod 35. The tie rod 35 passes through the beam bottom support 32 and extends into the box girder 1 through the hole. The beam bottom support 32 is fixed to the box girder 1 through the tie rod 35. The formwork assembly is pressed against the box girder 1 by the steam curing frame 3 to complete the fixation.

[0040] Immediately after the formwork components are fixed, concrete is poured into the wet joint. After the pouring is completed, the tie rod 35 is loosened so that the formwork components can be withdrawn from between the wet joint and the steam curing rack 3, and then the steam curing rack 3 is fixed to the box girder 1. Since the steam curing rack 3 is provided with a groove 33 that can completely enclose the wet joint inside, and at the same time is hermetically wrapped by a tarpaulin 34. Further, a circle of sealing sponge is provided at the contact surface between the tarpaulin 34 and the box girder 1 to enhance the sealing effect inside the groove 33.

[0041] At this time, steam is generated by a steam generator in the steam curing system, and the steam is transported through a pipeline to the enclosed space inside the steam curing rack 3 to cure the wet joint after pouring. Through the cooperation of the steam curing rack 3 and the steam curing system, full-process and full-wrap steam heat preservation and moisture preservation curing of the wet joint concrete in the plateau area can be realized.

[0042] Further, an internal curing rack 36 is provided at a position corresponding to the wet joint in a circle inside the box girder 1. The middle part of the internal curing rack 36 is also of a concave structure. The internal curing rack 36 is covered with a tarpaulin 34 for sealing. By arranging the internal curing rack 36 in the inner cavity of the box girder 1 in advance, and the internal curing rack 36 communicates with the steam curing rack 3 through holes, the steam in the steam curing groove 33 will enter the groove 33 of the internal curing rack 36, and the two sides of the wet joint are heat-preserved and moisture-preserved by steam, further improving the curing effect.

[0043] During steam curing, an automatic regulating steam generator is used to provide steam with a constant temperature and humidity. A tee pipeline is arranged on the beam surface of the wet joint in the steam pipeline. Part of the steam is dispersed and transported into the beam surface support 31, and part of the steam is introduced into the groove 33 of the beam bottom support 32. At the same time, the steam enters the box girder 1 through the holes of the tie rod 35.

[0044] Further, remote temperature and humidity sensors are provided inside both the steam curing rack 3 and the internal curing rack 36. The remote temperature and humidity sensors are electrically connected to the steam curing system. When the temperature and humidity during the curing process do not meet the design requirements, the steam is automatically adjusted immediately to ensure the curing quality of the wet joint of the segment beam.

[0045] Further, a track and a guide wheel assembly 26 are provided between the traveling frame 21 and the box girder 1. The operating platform 2 is connected to the bridge erecting machine through a towing rope. The movement of the operating platform 2 can be completed by the bridge erecting machine without an additional driving source, saving costs.

[0046] Further, the vertical telescopic frame 22 and the horizontal telescopic frame 23 are provided with a truss telescopic structure. The vertical telescopic frame 22 is located on both sides of the box girder 1. The support frame 27 is fixed to the outer frame of the vertical telescopic frame 22. The steel wire rope of the winch 24 is connected to the inner frame of the vertical telescopic frame 22.

[0047] Inside the horizontal telescopic frame 23, the outer frame of the horizontal telescopic frame 23 is fixed to the bottom end of the inner frame of the vertical telescopic frame 22. One end of the hydraulic telescopic assembly 25 is connected to the outer frame of the horizontal telescopic frame 23, and the other end of the hydraulic telescopic assembly 25 is connected to the inner frame of the horizontal telescopic frame 23

[0048] Through the above technical solution, for different box girder 1 sizes, corresponding adjustments can be made through the telescopic assembly. The hoist 24 can drive the inner frame of the vertical telescopic frame 22 and the connected horizontal telescopic frame 23 to adjust the height up and down. The hydraulic telescopic assembly 25 can drive the inner frame inside the horizontal telescopic frame 23 to horizontally extend. During the initial installation, the hydraulic telescopic assemblies 25 on both sides move synchronously to bring the two sets of horizontal telescopic frames 23 closer and connect them, facilitating the installation of the steam curing frame 3. When the curing is completed and it needs to be moved to the next wet joint, the horizontal telescopic frame 23 can be retracted to pass through the pier without manual demolition, greatly improving the installation efficiency. It is towed to the predetermined position by the bridge erecting machine, and the pier is passed through by the telescopic assembly, effectively realizing the cyclic use of wet joint installation and curing

[0049] Furthermore, the support frame 27 is of a stepped structure. The construction passage is located on one side of the support frame 27 and the top of the horizontal telescopic frame 23. At the same time, the vertical telescopic frame 22 is provided with a ladder 28, which facilitates workers to enter the construction passage through the ladder 28 during the installation process, and then install the formwork assembly at the bottom of the beam and install the steam curing frame 3. At the same time, sealing railings are provided on both sides of the construction passage for operators to pass through and stand, effectively ensuring the safety of the operators

[0050] Furthermore, both the operation platform 2 and the steam curing frame 3 are made of detachable steel structures, which are convenient for lapping and adjustment and can be reused multiple times

[0051] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in related fields. And the changes and modifications made by those skilled in the art that do not depart from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention

Claims

1. A pier body steaming climbing device and a curing method thereof, characterized in that: It comprises an operating platform (2), a steam curing frame (3) and a steam curing system, The steam curing frame (3) is located on the outer side of the wet joint of the box beam (1), a groove (33) is provided in the middle of the steam curing frame (3), a tarpaulin (34) is provided at the groove (33), and a template assembly is provided between the steam curing frame (3) and the box beam (1); The steam curing frame (3) is connected to the operating platform (2), the operating platform (2) is a Π-shaped structural frame and is arranged on the top and both sides of the box beam (1), the operating platform (2) comprises a traveling frame (21) and telescopic frame assemblies located on both sides of the traveling frame (21), a track and guide wheel assembly (26) is arranged between the traveling frame (21) and the box beam (1), and the operating platform (2) is connected to the bridge erection machine through a traction rope; The telescopic frame assembly is an L-shaped structure, a construction channel is provided on the telescopic frame assembly, the telescopic frame assembly comprises a vertical telescopic frame (22), a transverse telescopic frame (23), a winch (24) and a hydraulic telescopic assembly (25), the transverse telescopic frame (23) and the hydraulic telescopic assembly (25) are located below the vertical telescopic frame (22), the winch (24) is located on the walking frame (21), the vertical telescopic frame (22) is vertically telescopic by the winch (24), and the transverse telescopic frame (23) is horizontally telescopic by the hydraulic telescopic assembly (25); The steam curing system is connected to the traveling frame (21), and the pipeline of the steam curing system extends into the groove (33).

2. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The steam curing frame (3) comprises a beam surface support (31) and a beam bottom support (32), a tie rod (35) is provided between the beam bottom support (32) and the box beam (1), a hole is reserved in the box beam (1) at a position corresponding to the tie rod (35), and the tie rod (35) passes through the beam bottom support (32) and then extends into the box beam (1) through the hole.

3. The pier body steaming climbing device and the curing method thereof according to claim 2 are characterized in that: An internal curing frame (36) is provided at a position corresponding to a wet joint in an inner circle of the box beam (1), the middle portion of the internal curing frame (36) is also a concave structure, the internal curing frame (36) is paved with a tarpaulin (34), and the internal curing frame (36) is connected to the steam curing frame (3) through a hole.

4. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The vertical telescopic frame (22) and the horizontal telescopic frame (23) are provided with a truss telescopic structure, the vertical telescopic frame (22) and the horizontal telescopic frame (23) are located on both sides of the box beam (1), the support frame (27) is fixed to the outer frame of the vertical telescopic frame (22), and the steel wire rope of the hoist (24) is connected to the inner frame of the vertical telescopic frame (22).

5. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The transverse telescopic frame (23) is provided with an outer frame of the transverse telescopic frame (23) fixed to the bottom end of the inner frame of the vertical telescopic frame (22); one end of the hydraulic telescopic assembly (25) is connected to the outer frame of the transverse telescopic frame (23); and the other end of the hydraulic telescopic assembly (25) is connected to the inner frame of the transverse telescopic frame (23).

6. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The support frame (27) is a stepped structure, and the construction channel is located on one side of the support frame (27) and on the top of the transverse telescopic frame (23).

7. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The contact surface between the tarpaulin (34) and the box beam (1) is provided with a circle of sealing sponge.

8. The pier body steaming climbing device and the curing method thereof according to claim 1, characterized in that: The operating platform (2) and the steam curing frame (3) both adopt detachable steel structures.

9. The pier body steaming climbing device and the curing method thereof according to claim 3, characterized in that: The steam curing frame (3) and the internal curing frame (36) are both provided with remote temperature and humidity sensors, and the remote temperature and humidity sensors are electrically connected to the steam curing system.

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