Steel mould trolley for continuous pouring construction of steel-concrete structure of electric power protective shed tunnel

Abstract

The utility model relates to a steel mould trolley for continuous pouring construction of a reinforced concrete structure of an electric power protective shed tunnel, which is characterized in that an internal mould trolley comprises two internal mould bottom beams, the tops of the two internal mould bottom beams are connected with an internal mould portal frame through internal mould lifting oil cylinders, and the internal mould portal frame is connected with an internal mould lifting oil cylinder; the top of the inner mold portal frame is fixedly connected with an inner top mold plate, the side portion of the inner mold portal frame is connected with an inner edge mold plate through a side mold oil cylinder, the inner edge mold plate is hinged to the inner top mold plate, the bottom of the inner mold bottom beam is connected with an inner mold wheel set, and the inner mold wheel set can enable an inner mold trolley to move along an inner rail through an inner mold driving mechanism. A jack is arranged at the bottom of the inner mold bottom beam, a plurality of supporting frames are further arranged below the inner mold bottom beam in the length direction of the inner mold bottom beam, each supporting frame comprises a first supporting beam and two second supporting beams, and the first supporting beams and the second supporting beams can be matched to form a triangular support. According to the steel mould trolley, lateral inclination or displacement of the trolley can be effectively avoided, and the pouring quality of a shed tunnel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of casting construction, and in particular to a steel formwork trolley for continuous casting construction of steel-concrete structures for power protection sheds. Background Technology

[0002] In recent years, with the rapid development of high-speed railways, high-speed rail lines inevitably intersect with high-voltage power transmission lines. When the crossing points do not meet the "endurance-endurance, endurance-DC-endurance, endurance-DC-DC-endurance" design requirements for power lines, certain safety hazards exist. Especially with climate change, the frequency of extreme weather events such as strong winds, hail, and freezing rain has significantly increased, greatly raising the probability of power line breaks and even tower collapses, seriously threatening the safe and efficient operation of high-speed rail lines. In March 2010, strong winds in Shijiazhuang, Hebei Province, caused power towers to collapse, encroaching on the railway line between Dingzhou and Qingfengdian on the Beijing-Guangzhou Railway, scraping some carriages and causing numerous train delays.

[0003] When power lines cross high-speed rail lines in ways that do not meet electrical safety requirements, the conventional solution is to reroute the transmission lines. However, this involves complex relocation plans, high costs, and difficulties in coordinating power outage schedules, which are often lengthy. This is especially true for ultra-high-voltage (UHV) transmission lines, where relocation would significantly impact the power supply to nearby residents, businesses, and industries. To mitigate the adverse effects of relocation, save on construction costs, and shorten the construction period, constructing reinforced concrete (RCC) protective shelters beneath the transmission lines is a more suitable solution. Particularly under extreme weather conditions, in the event of a UHV transmission line breakage or even tower collapse, the RCC structure can effectively withstand severe impacts, ensuring the safety of railway operations.

[0004] The traditional method of splicing steel formwork for pouring concrete for power protection tunnels requires the erection of scaffolding to secure the formwork. After the concrete has solidified, the scaffolding and both inner and outer formwork must be manually dismantled. Due to the large length of the power protection tunnels, the assembly and dismantling of the formwork and scaffolding must be repeated multiple times, which is time-consuming, labor-intensive, and increases costs. Furthermore, the finished product is not smooth or aesthetically pleasing.

[0005] To reduce the labor intensity of power protection tunnel construction and improve project efficiency and mechanization, steel formwork trolleys are currently widely used to assist in construction. These trolleys include inner and outer formwork trolleys, which work together to achieve tunnel pouring. However, due to the large size and weight of existing steel formwork trolleys, during actual pouring, the trolley mast, especially the inner formwork trolley mast, may tilt or shift laterally due to factors such as different directions of the hydraulic cylinder driving the inner formwork or differences in pouring speed on both sides, which can affect the pouring quality. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a steel formwork trolley for continuous pouring construction of steel-concrete structures for power protection tunnels, which can effectively prevent the inner formwork trolley from tilting or shifting, thus ensuring the quality of tunnel pouring.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0008] A steel formwork trolley for continuous pouring construction of reinforced concrete structures in power protection tunnels includes an inner formwork trolley and an outer formwork trolley used in conjunction. The inner formwork trolley includes two inner formwork bottom beams, the tops of which are connected to an inner formwork gantry via inner formwork lifting cylinders. The top of the inner formwork gantry is fixed to an inner top template, and the sides of the inner formwork gantry are connected to inner side templates via side template cylinders. The inner side templates and the inner top templates are hinged. The bottom of the inner formwork bottom beams is connected to an inner formwork wheel set, which enables the inner formwork trolley to move along an inner track via an inner formwork drive mechanism. Jacks are provided at the bottom of the inner formwork bottom beams, and multiple supports are also provided along the length of the inner formwork bottom beams. The frame includes a first support beam and two second support beams. The bottom center of the first support beam has a notch for the inner track to be inserted. The two ends of the second support beam are connected to the end of the first support beam and the side of the bottom beam of the inner mold through hinge pins, respectively, to cooperate with the first support beam to form a triangular support. The second support beam adopts a first support spiral screw. The inner side template and the inner mold frame are connected by a second support spiral screw. The first support spiral screw and the second support spiral screw each include two hinge joints. The two hinge joints are connected by a threaded sleeve. The threads at both ends of the threaded sleeve are arranged in opposite directions so that the distance between the two hinge pins can be adjusted by rotating the threaded sleeve.

[0009] Furthermore, the inner mold frame includes a door frame, and a number of reinforcing horizontal braces are connected inside the door frame. A reinforcing diagonal brace is connected between the reinforcing horizontal brace and the top of the door frame. A reinforcing vertical brace extending to the top of the door frame is connected through the reinforcing horizontal brace, and a jack is also provided at the bottom of the reinforcing vertical brace.

[0010] Furthermore, the outer mold trolley includes two outer mold bottom beams, the bottom of which is connected to the outer mold gantry via an outer mold lifting cylinder. The bottom of each outer mold bottom beam is connected to an outer mold wheel assembly, which allows the outer mold trolley to move along the outer track via an outer mold drive mechanism. A jack is also provided at the bottom of each outer mold bottom beam. The inner side of the outer mold gantry is connected to the outer template, which is driven to move laterally by a translation cylinder. A third supporting screw is connected between the outer mold gantry and the outer template. Tie bolts are connected between the outer template and the inner template to position the pouring spacing. A fourth supporting screw is also inclinedly hinged between the outer side of the outer mold bottom beam and the ground.

[0011] The advantages of this utility model using the above technical solution are:

[0012] 1. This steel formwork trolley, with its support frame, can stabilize the position of the inner formwork bottom beam during pouring, thereby better stabilizing the inner formwork frame. This allows for accurate positioning of the inner side template and the connected outer formwork trolley, which in turn ensures accurate positioning. This helps improve the quality of the shed and maintains consistent quality for continuously poured sheds. In addition to improving the stability of the inner formwork trolley, the aforementioned support frame also has the advantages of simple structure and easy assembly and disassembly.

[0013] 2. The inner mold gantry, through the combination of reinforced horizontal bracing, reinforced diagonal bracing, and reinforced vertical bracing with the gantry frame, can enhance the overall structural stability of the inner mold gantry and further help improve the casting quality.

[0014] 3. The outer mold trolley is supported by a third support screw, which can provide good support and is easy to adjust, thus improving the stability of the pouring process and helping to improve the quality of the pouring. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure during the casting process of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the connection structure between the middle support frame and the bottom beam of the inner mold;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure after demolding of the inner edge template;

[0018] Figure 4 for Figure 1 Side view of the inner mold trolley;

[0019] Figure 5 for Figure 1 Side view of the Chinese and foreign mold trolley.

[0020] In the diagram, 1. Inner mold bottom beam, 2. Inner mold lifting cylinder, 3. Inner mold gantry, 4. Inner top template, 5. Side mold cylinder, 6. Inner edge template, 7. Inner mold wheel set, 8. Inner mold drive mechanism, 9. Inner track, 10. Jack, 11. Support frame, 12. Outer mold bottom beam, 13. Outer mold lifting cylinder, 14. Outer mold gantry, 15. Outer template, 16. Translation cylinder, 17. Third support screw, 18. Tie bolt, 19. Fourth support screw, 20. Second support screw.

[0021] 301. Gate frame; 302. Reinforced horizontal brace; 303. Reinforced diagonal brace; 304. Reinforced vertical brace;

[0022] 1101, First support beam; 1102, Second support beam; 1103, Notch; 1104, Hinge. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0024] like Figure 1-5 As shown, in this embodiment, the steel formwork trolley used for continuous pouring construction of steel-concrete structures for power protection sheds includes an inner formwork trolley and an outer formwork trolley used in conjunction. The inner formwork trolley includes two inner formwork bottom beams 1. The tops of the two inner formwork bottom beams 1 are connected to an inner formwork gantry 3 via inner formwork lifting cylinders 2. The top of the inner formwork gantry 3 is fixedly connected to an inner top template 4. The sides of the inner formwork gantry 3 are connected to inner side templates 6 via side template cylinders 5, and the inner side templates 6 and the inner top template 4 are hinged. The bottom of the inner formwork bottom beams 1 is connected to an inner formwork wheel set 7. The inner formwork wheel set 7 can move the inner formwork trolley along the inner track 9 through an inner formwork drive mechanism 8. A jack 10 is provided at the bottom of the inner formwork bottom beams 1. The lower part of the inner formwork bottom beams 1 is connected along its inner track 9. Multiple support frames 11 are also provided along the length direction. Each support frame 11 includes a first support beam 1101 and two second support beams 1102. The bottom center of the first support beam 1101 has a notch 1103 for the inner track 9 to be inserted. The two ends of the second support beams 1102 are respectively connected to the end of the first support beam 1101 and the side of the inner mold bottom beam 1 via hinge pins 1104, so as to cooperate with the first support beam 1101 to form a triangular support. The second support beams 1102 adopt a first support spiral screw, which includes two hinge joints. A threaded sleeve is connected between the two hinge joints. The threads at both ends of the threaded sleeve are arranged in opposite directions so that the distance between the two hinge pins can be adjusted by rotating the threaded sleeve. A second support spiral screw 20 is also connected between the inner side template 6 and the inner mold frame 3.

[0025] Furthermore, the inner mold frame 3 includes a door frame 301, and a plurality of reinforcing horizontal supports 302 are connected inside the door frame 301. A reinforcing diagonal support 303 is connected between the reinforcing horizontal supports 302 and the top of the door frame 301. A reinforcing vertical support 304 extending to the top of the door frame is connected through the reinforcing horizontal supports 302. A jack 10 is also provided at the bottom of the reinforcing vertical support 304.

[0026] Furthermore, the outer mold trolley includes two outer mold base beams 12. The bottoms of the two outer mold base beams 12 are connected to the outer mold gantry 14 via outer mold lifting cylinders 13. Outer mold wheel sets are connected to the bottoms of the outer mold base beams 12. The outer mold wheel sets can move the outer mold trolley along the outer track via an outer mold drive mechanism. Jacks are also provided at the bottom of the outer mold base beams. The outer mold gantry 14 is connected to the inner side of the outer template 15. The outer template 15 is driven to move laterally by a translation cylinder 16. A third supporting spiral screw 17 is connected between the outer mold gantry 14 and the outer template 15. Tie bolts 18 are connected between the outer template 15 and the inner template 6 to position the pouring spacing. A fourth supporting spiral screw 19 is also inclinedly hinged between the outer side of the outer mold base beam 12 and the ground. The structures of the fourth and third supporting spiral screws are the same as the first supporting spiral screw.

[0027] Working principle:

[0028] Figure 1 The lower half of the concrete structure was constructed first, and then the shed was poured on top of it.

[0029] The inner mold trolley moves its wheel set along the inner track via the inner mold drive mechanism. Once it reaches the designated pouring position, the jack 10 is first used to support and fix the inner mold bottom beam 1, thus preventing deformation of the inner mold bottom beam due to gravity or other factors. Then, multiple support frames 11 are used to stabilize the inner mold bottom beam 1. Specifically, the second support beam 1102 is rotated relative to the first support beam 1101 to approximately a straight line. Then, the first support beam 1101 is inserted along the gap between the inner mold bottom beam 1 and the inner track 9, securing it to the inner track 9. Next, the second support beam 1102 is rotated around a hinge shaft until it contacts the inner mold bottom beam 1. Then, another hinge shaft is used to fix it to the connecting piece on the inner mold bottom beam 1. Finally, the second support beam 1102 is tightened by rotating the threaded sleeve, completing the fixation of one support frame 11. Multiple support frames 11 are used to reinforce and fix the inner mold bottom beam 1 as needed, effectively preventing lateral tilting and displacement of the inner mold frame. Then, the inner mold lifting cylinder 2 drives the inner mold gantry 3 to rise to the specified position, and the side mold cylinder 5 drives the inner side template 6 to the specified position. Then, multiple second support spiral screws 20 are installed between the inner side template 6 and the inner mold gantry 3. On the one hand, they can strengthen the inner side template 6, and on the other hand, they can relieve the pressure on the side mold cylinder 5.

[0030] The outer mold trolley moves its wheel set along the outer track via the outer mold drive mechanism. Once it reaches the designated position, the jack 10 is first used to support and fix the outer mold bottom beam 12 to prevent deformation caused by gravity or other factors. Then, multiple fourth support screws 19 further support and fix the outer mold bottom beam 12. Next, the outer mold lifting cylinder 13 lowers the outer mold gantry 14 to the designated position, and the translation cylinder 16 moves the outer template 15 to the designated position. Then, the tie bolts 18 fix the outer template 15 and the inner template 6, and multiple third support screws 17 are installed between the outer template 15 and the outer mold gantry 3 to better reinforce the outer template 15.

[0031] After the pouring is completed, when removing the inner formwork, first cut the tie bolts at the inner side template end, then remove the second support screw, and then use the side mold cylinder to move the inner side template obliquely inward to achieve side demolding. Then, use the lifting cylinder to move the inner formwork gantry downward to achieve top demolding, thus completing the inner formwork removal. Afterwards, remove the jacks and support frame to allow the inner formwork trolley to move to the next working section.

[0032] When removing the outer mold, first cut the bolts of the tie bolts at the end of the outer mold plate, and remove the third support screw. Then, use the translation cylinder to move in the opposite direction to remove the outer mold plate. Use the outer mold lifting cylinder to move the outer mold gantry to its original position to remove the outer mold. After that, remove the jack and the fourth support screw so that the outer mold trolley can be moved to the next working section.

[0033] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0034] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A steel formwork trolley for continuous pouring construction of reinforced concrete structures in power protection tunnels, comprising an inner formwork trolley and an outer formwork trolley used in conjunction, characterized in that, The inner mold trolley includes two inner mold bottom beams. The tops of the two inner mold bottom beams are connected to the inner mold gantry via inner mold lifting cylinders. The top of the inner mold gantry is fixed to the inner top template. The sides of the inner mold gantry are connected to the inner side templates via side mold cylinders, and the inner side templates and the inner top templates are hinged. The bottom of the inner mold bottom beams is connected to an inner mold wheel assembly. The inner mold wheel assembly can move the inner mold trolley along the inner track through an inner mold drive mechanism. A jack is provided at the bottom of the inner mold bottom beams. Multiple support frames are also provided below the inner mold bottom beams along their length. Each support frame includes a first support beam and two second supports. The first support beam has a notch at the bottom center for the inner track to be inserted. The two ends of the second support beam are connected to the end of the first support beam and the side of the bottom beam of the inner mold through hinge shafts, respectively, to cooperate with the first support beam to form a triangular support. The second support beam adopts a first support spiral screw. A second support spiral screw is connected between the inner side template and the inner mold frame. The first support spiral screw and the second support spiral screw each include two hinge joints. A threaded sleeve is connected between the two hinge joints. The threads at both ends of the threaded sleeve are arranged in opposite directions so that the distance between the two hinge shafts can be adjusted by rotating the threaded sleeve.

2. The steel formwork trolley for continuous pouring construction of steel-concrete structures for power protection sheds according to claim 1, characterized in that, The inner mold gantry includes a gantry frame, with several reinforcing horizontal braces connected inside the gantry frame. A reinforcing diagonal brace connects the reinforcing horizontal brace to the top of the gantry frame. A reinforcing vertical brace extending to the top of the gantry frame is connected through the reinforcing horizontal brace, and a jack is also provided at the bottom of the reinforcing vertical brace.

3. The steel formwork trolley for continuous pouring construction of steel-concrete structures for power protection sheds according to claim 1, characterized in that, The outer mold trolley includes two outer mold bottom beams. The bottom of the two outer mold bottom beams is connected to the outer mold gantry via an outer mold lifting cylinder. The bottom of the outer mold bottom beams is connected to an outer mold wheel assembly. The outer mold wheel assembly can move the outer mold trolley along the outer track through an outer mold drive mechanism. A jack is also provided at the bottom of the outer mold bottom beams. The outer template is connected to the inner side of the outer mold gantry. The outer template is driven to move laterally by a translation cylinder. A third support screw is connected between the outer mold gantry and the outer template. Tie bolts are connected between the outer template and the inner template to position the pouring spacing. A fourth support screw is also inclinedly hinged between the outer side of the outer mold bottom beams and the ground.

Images