Side film demolding system for continuous beam suspension grouting bridge fabrication machine

Abstract

The utility model belongs to the technical field of continuous beam suspension grouting bridge fabrication machines, and particularly relates to a side film demolding system for a continuous beam suspension grouting bridge fabrication machine. The side mold demolding system adopts a non-parallelogram locking structure, that is, side molds on the two sides of an inverted-U-shaped portal frame cooperatively work through two sets of supporting beams, lifting oil cylinders and translation oil cylinders on brackets, the lifting oil cylinders and the translation oil cylinders are mutually matched under regulation and control of an intelligent monitoring system to achieve lifting and transverse movement of the side molds, and the demolding action is completed. The side mold demolding system has the advantages of being easy and convenient to install and debug and stable and reliable in main body structure, the rigidity and stability of side mold movement are improved, and the repeated utilization rate and transition efficiency of a bridge fabrication machine are improved; and meanwhile, the construction cost and the labor intensity are reduced, and the occurrence probability of safety accidents is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous beam suspended grouting bridge-building machines, and in particular relates to a side film demoulding system for continuous beam suspended grouting bridge-building machines. Background Art

[0002] The continuous beam bridge is an ancient structural system. Since the 1970s, this structural system has become one of the main bridge types of prestressed concrete bridges. It has the advantages of small deformation under the use load, large structural rigidity, few expansion joints, smooth and comfortable driving, and small maintenance. Prestressed concrete continuous beam bridges generally adopt box sections. According to the width of the bridge section, they can be single-box single-chamber or single-box multi-chamber. The applicable span ranges from tens of meters to two or three hundred meters. For large spans, variable sections are often used, which can change the beam height and the thickness of the bottom plate, top plate and web of the section to better meet the different force requirements of each section in the beam and reduce the deadweight of the dead load. Prestressed concrete continuous box beams can be used for urban bridges, and can also be used to cross wide rivers and existing lines. They can play their advantages and are a widely used bridge type.

[0003] At present, the cantilever casting method is widely used in the construction of continuous beams. Since the cantilever casting method is not restricted by navigation and traffic, it does not need to build a ground support, and does not need large-scale lifting and transportation machinery. The main construction equipment is the hanging basket. The hanging basket is the main equipment for cantilever casting construction. It can be moved on the beam body that has been tensioned and anchored and connected to the pier body as a whole. Each section of steel bar binding, formwork erection, concrete pouring, and longitudinal prestressing are all carried out in the hanging basket. After completing the construction of this section, the hanging basket moves forward symmetrically by one section. However, during construction, the formwork and the main frame need to be cumbersomely disassembled and assembled, and the center of gravity of the main frame is too high, resulting in high construction production costs and greater safety risks; at the same time, there is the disadvantage of low construction efficiency.

[0004] In response to the above-mentioned problems in construction, the industry has introduced continuous beam suspended grouting bridge-building machines, such as the invention patent with application number CN202311565522.1, which discloses a new type of continuous beam suspended grouting bridge-building machine. The suspended grouting bridge-building machine uses an inverted U-shaped gantry on the main load-bearing beam to suspend the outer formwork, inner formwork and bottom formwork on both sides of the bridge-building machine and can move automatically, reducing the phenomenon of template and truss asynchronism that occurs when ordinary hanging baskets move.

[0005] In the above-mentioned publicly disclosed patent, the existing side mold demolding mechanism usually adopts a hinged structure design. Due to the kinematic characteristics of the parallelogram formed during the transverse movement operation, this structure is prone to insufficient stability. Especially in application scenarios with large tonnage and high-precision requirements, the supporting screw rod has poor rigidity during transverse movement, is prone to deformation and potential safety hazards. In addition, limited by the spatial limitations of the installation environment, the installation of the hanging beam and the support system in the traditional demolding mechanism is difficult, and it is not convenient for construction and maintenance. Additionally, a suspension rod is generally used instead of precision rolled threaded steel as the main load-bearing component, and there is a risk of brittle fracture effectively reduced under repeated stress and stress concentration conditions. Summary of the Utility Model

[0006] Aiming at the stability problem that the traditional quadrilateral structure is prone to deformation and the consequent safety risks during the transverse demolding of the side mold mechanism in the existing continuous beam construction after the continuous beam segment is poured. The present utility model provides a side film demolding system for a continuous beam suspended casting bridge machine.

[0007] To achieve the above object, the present utility model adopts the following technical solutions: A side film demolding system for a continuous beam suspended casting bridge machine includes a plurality of bracket legs and side molds. Two groups of support beams are arranged on the bottom beam of each bracket leg. The lower ends of the two groups of support beams are hinged to the bottom beam of the bracket leg through double-headed ear seats, and their upper ends are slidably connected to the guiding track. A plurality of guiding tracks are connected by two hanging beams. The side mold is fixed on the two hanging beams. The upper end of each group of support beams is hinged to the bottom beam of the bracket leg through a lifting oil cylinder. A translation oil cylinder is hinged between the side beam and the hanging beam of each bracket leg. A plurality of translation oil cylinders and a plurality of groups of lifting oil cylinders are provided with hydraulic power through a hydraulic system, and under the control of an intelligent monitoring system, they cooperate with each other to drive the side mold to complete the demolding action.

[0008] As a further explanation and limitation of the above technical solution, each group of support beams includes two pairs of support beam rods and a cam mechanism arranged on each pair of support beam rods. The cam mechanism is slidably connected to the guiding track. A cross-connecting beam rod is fixed between the two inner support beam rods. A first ear seat is fixed on the cross-connecting beam rod. The piston rod end of the lifting oil cylinder is connected to the cross-connecting beam rod through the first ear seat. The cylinder body end of the lifting oil cylinder is connected to the bottom beam of the bracket leg through a second ear seat.

[0009] As a further explanation and limitation of the above technical solution, the cam mechanism includes a mounting plate member and a cam. The cam is installed on each pair of support beam rods through the mounting plate member. The guiding track is an I-beam, and the cam is arranged in the two side grooves of the I-beam.

[0010] As a further supplementary description of the above technical solution, a cross-linking plate is arranged on each of the guiding tracks, and both ends of the cross-linking plate are respectively connected to two hanging beams.

[0011] As a further explanation and limitation of the above technical solution, the piston rod end of the translation oil cylinder is connected to the hanging beam through a third ear seat, and the cylinder body end of the translation oil cylinder is connected to the side beam of the bracket through a fourth ear seat.

[0012] Compared with the existing side mold demolding mechanism with a hinged structure, the present utility model has the following advantages:

[0013] 1. The present utility model utilizes two groups of support beams and the supporting lifting oil cylinders combined with the translation oil cylinder to design a non-parallelogram locking structure, abandoning the traditional hinged mode. During the demolding process, the cooperation of the support beam with the cam and the guiding track, and the cooperation of the lifting oil cylinder realize the lifting of the side mold, significantly improving the rigidity and stability during the transverse movement, greatly enhancing the safety of the side mold movement, reducing the safety cost caused by the instability of the traditional side mold quadrilateral hinged structure, and effectively reducing the occurrence probability of safety accidents.

[0014] 2. The side mold demolding system designed by the present utility model is simple in the installation and debugging process at the construction site, and the main structure is stable and reliable, making the demolding process safe and fast. While ensuring the construction accuracy, it reduces the labor intensity, reducing the labor demand to two-thirds of the original.

[0015] 3. In the side mold demolding system designed by the present utility model, the support beam, the lifting oil cylinder and the translation oil cylinder are detachable and reusable, further improving the reuse rate and the transfer efficiency of the bridge erector, and further reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structure diagram of the side mold demolding system in the present utility model;

[0017] Figure 2 is the assembly structure diagram of the support beam and the cam mechanism in the present utility model.

[0018] In the figure: the bracket is 1, the side mold is 2, the double-headed ear seat is 3, the support beam is 4, the support beam rod is 401, the cross-connecting beam rod is 402, the lifting oil cylinder is 5, the first ear seat is 6, the second ear seat is 7, the guiding track is 8, the hanging beam is 9, the third ear seat is 10, the fourth ear seat is 11, the translation oil cylinder is 12, the cross-linking plate is 13, the mounting plate part is 14, and the cam is 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to further elaborate on the technical solution of the present utility model, the following combines the attached Figures 1 to 2, according to the on-site transformation implementation plan, we select the optimal embodiment to further illustrate the present utility model.

[0020] As shown in the attached Figure 1 , a side formwork demoulding system for a continuous beam cantilever casting bridge machine is provided. On the bottom beam of each bracket 1 on both sides of the inverted U-shaped gantry, two sets of support beams 4 are arranged. The lower ends of the two sets of support beams 4 are hinged to the bottom beam of the bracket 1 through double-headed ear seats 3, and their upper ends are slidably connected to the guiding rails 8. A plurality of the guiding rails 8 are connected by two lifting beams 9. A cross-linking plate 15 is arranged on each guiding rail 8, and both ends of the cross-linking plate 15 are respectively connected to the two lifting beams 9. The side formwork 2 is fixed on the two lifting beams 9. The upper end of each set of support beams 4 is hinged to the bottom beam of the bracket 1 through a lifting oil cylinder 5. A translation oil cylinder 12 is hinged between the side beam of each bracket 1 and the lifting beam 9. A plurality of the translation oil cylinders 12 and a plurality of sets of the lifting oil cylinders 5 are provided with hydraulic power by a hydraulic system, and cooperate with each other under the control of an intelligent monitoring system to drive the side formwork 2 to complete the demoulding action.

[0021] Furthermore, as shown in the attached Figure 1 and 2 , each set of support beams 4 includes two pairs of support beam rods 401 and a cam mechanism arranged on each pair of support beam rods 401. The cam mechanism includes a mounting plate member 14 and a cam 15. The cam 15 is mounted on each pair of support beam rods 401 through the mounting plate member 14. The guiding rail 8 is an I-beam. The cam 15 is arranged in the two side grooves of the I-beam and forms a sliding connection with the guiding rail 8. A cross-connecting beam rod 402 is fixed between the two inner support beam rods 401. A first ear seat 6 is fixed on the cross-connecting beam rod 402. The piston rod end of the lifting oil cylinder 5 is connected to the cross-connecting beam rod 402 through the first ear seat 6. The cylinder body end of the lifting oil cylinder 5 is connected to the bottom beam of the bracket 1 through a second ear seat 7. The piston rod end of the translation oil cylinder 12 is connected to the lifting beam 9 through a third ear seat 10. The cylinder body end of the translation oil cylinder 12 is connected to the side beam of the bracket 1 through a fourth ear seat 11.

[0022] In this embodiment, to facilitate those skilled in the art to better understand this implementation solution, we will further explain the key components. The hanging beam 9 is mainly used to suspend and position the die side plates to ensure their stability during hoisting, installation, and disassembly. During operation, please ensure that the hanging beam is firmly connected to the die side plates to avoid potential safety hazards caused by uneven stress. Before hoisting, check whether all fasteners are complete and tightened, and follow the safety operation procedures of the crane. The cross-linking plate 13 is used to connect and stabilize the relative positions between various parts of the die. During installation, the cross-linking plate needs to be accurately aligned with the corresponding interfaces and fixed with specified high-strength bolts to ensure that the connection parts are not loose. The translation oil cylinder 12 is a key component for realizing the opening and closing of the die. It provides power through the hydraulic system to enable the die to be smoothly demolded. Before use, it is necessary to confirm that there is no air in the oil cylinder and the oil level is sufficient. During operation, pay attention to observing the pressure gauge value to prevent overloading. The third ear seat 10 and the fourth ear seat 11 are jointly used to fix the translation oil cylinder and transmit its movement. During installation, ensure that the ear seats are closely fitted with the oil cylinder and the die structure without shaking. The double-headed ear seat 3 is used to fix the support frame and bear the vertical load. During installation, ensure that the ear seat is closely combined with the support frame and the stress is uniform. At the same time, regularly check its strength and fatigue condition according to the actual load-bearing situation. The first ear seat 6 and the second ear seat 7 are also used to fix the lifting oil cylinder 5, but in this case, they provide support for the lifting action. Before use, check the fit between the two ear seats and the lifting oil cylinder 5 and the tightness of the connecting bolts to ensure that there will be no detachment during the lifting process. The lifting oil cylinder 5 is mainly responsible for the lifting action of the die side mold. When using it, strictly follow the working process of the hydraulic system, control the lifting speed, and avoid impact damage caused by rapid lifting. Check its wear condition and the tightness of the fastening screws before each use. Of course, the oil cylinder pin is used to connect the oil cylinder with other components to achieve mechanical linkage. When inserting or removing the oil cylinder pin, ensure that the hole positions are aligned correctly and do not forcefully strike to avoid damaging the components. Regularly apply anti-rust grease to prevent corrosion.

[0023] The above has shown and described the main features and advantages of the present utility model. For those skilled in the art, it is obvious that the specific implementation manners of the present utility model are not limited to the details of the above exemplary embodiments. Moreover, without departing from the spirit or basic features of the present utility model, the creative ideas and design concepts of the present utility model can be implemented in other specific forms. It should be equally within the protection scope disclosed in the technical solution of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.

[0024] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A side film demoulding system for a continuous beam suspended grouting bridge-building machine, comprising a plurality of brackets (1) and side molds (2), characterized in that: Two groups of support beams (4) are arranged on the bottom beam of each of the corbels (1); the lower ends of the two groups of support beams (4) are hinged to the bottom beam of the corbel (1) through double-head ear seats (3), and the upper ends of the two groups of support beams (4) are slidably connected to the guide rails (8); a plurality of the guide rails (8) are connected through two suspension beams (9); the side mold (2) is fixed on the two suspension beams (9); the upper end of each group of support beams (4) is hinged to the bottom beam of the corbel (1) through a lifting cylinder (5); a translation cylinder (12) is hinged between the side beam of each of the corbels (1) and the suspension beam (9); a plurality of the translation cylinders (12) and a plurality of the lifting cylinders (5) provide hydraulic power through a hydraulic system, and cooperate with each other under the control of an intelligent monitoring system to drive the side mold (2) to complete the demoulding action.

2. The side film demoulding system for a continuous beam suspended cast-in-place bridge-building machine according to claim 1 is characterized in that: Each group of the support beams (4) comprises two pairs of support beams (401) and a cam mechanism arranged on each pair of support beams (401); the cam mechanism is slidably connected to the guide rail (8); a cross-linking beam (402) is fixed between the two inner support beams (401); a first ear seat (6) is fixed on the cross-linking beam (402); the piston rod end of the lifting cylinder (5) is connected to the cross-linking beam (402) via the first ear seat (6); and the cylinder end of the lifting cylinder (5) is connected to the bottom beam of the corbel (1) via the second ear seat (7).

3. The side film demoulding system for a continuous beam suspended cast-in-place bridge-building machine according to claim 2 is characterized in that: The cam mechanism comprises a mounting plate (14) and a cam (15); the cam (15) is mounted on each pair of supporting beams (401) via the mounting plate (14); the guide track (8) is an I-beam; and the cam (15) is arranged in grooves on both sides of the I-beam.

4. A side film demoulding system for a continuous beam suspended cast-in-place bridge-building machine according to any one of claims 1 to 3, characterized in that: A cross-connecting plate (13) is provided on each of the guide rails (8), and two ends of the cross-connecting plate (13) are respectively connected to two suspension beams (9).

5. The side film demoulding system for a continuous beam suspended cast-in-place bridge-building machine according to claim 4 is characterized in that: The piston rod end of the translation oil cylinder (12) is connected to the suspension beam (9) via a third ear seat (10), and the cylinder body end of the translation oil cylinder (12) is connected to the side beam of the corbel (1) via a fourth ear seat (11).

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