Automatic movable formwork hole passing device and hole passing operation method thereof

Abstract

The invention relates to the technical field of bridge construction, in particular to an automatic movable formwork hole passing device and a hole passing operation method thereof. The automatic movable formwork hole passing device comprises a main box girder, a guide beam, a hoisting crown block, a rear walking mechanism, a main middle supporting leg, a fixed middle supporting leg, a front supporting leg, an outrigger, a hanging curved beam, an outer formwork device, an inner formwork device, a reshipment trolley and a control system. A hoisting crown block, a main middle supporting leg, a fixed middle supporting leg, a front supporting leg, an outrigger and a reshipment trolley are controlled through a main controller of the control system, and accurate and automatic control over all stages and equipment in the hole passing operation process of the movable formwork is achieved. An automatic hole passing program is set through a control system, the hole passing operation process including inversion and longitudinal movement of a main middle supporting leg, longitudinal movement of a main box girder, contraction supporting of a fixed middle supporting leg and a front supporting leg, mold opening and closing of an outrigger and the like is accurately controlled, automatic execution is achieved through a programming instruction, human intervention is reduced, and operation safety and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to an automated movable formwork through-hole device and a through-hole operation method thereof. Background Art

[0002] With the development of my country's transportation industry, the construction methods of bridge superstructures are becoming increasingly diverse. The mobile formwork construction scheme has the advantages of low amortization cost for multi-span construction, little environmental impact due to the lack of steel pipe support, less constraints from on-site factors, and a short single-span construction period.

[0003] Mobile formwork is a self-contained formwork, using pedestals or piers as support, and is a self-propelled special equipment for bridge construction. The mobile formwork is constructed by span-by-span construction. It is quick to install, easy to operate, low in cost, and has a wide range of applicability. It can meet the construction requirements of various types of cast-in-place continuous box girder bridges.

[0004] The hole-passing operation of the mobile formwork is mainly achieved through the relative adjustment of the structures of the main box girder, main center support leg, fixed center support leg, front support leg, lifting crane, inverted trolley, cantilever beam and other devices. During the hole-passing operation, the existing mobile formwork devices mainly rely on manual operation, which not only requires a lot of manpower costs, but also easily leads to errors and low efficiency, affecting the construction progress. Summary of the Invention

[0005] The present invention provides an automated mobile formwork through-hole device and a through-hole operation method thereof, which are used to solve the defects that the existing mobile formwork devices mainly rely on manual operation, resulting in errors and low efficiency, and affecting the construction progress. The device can realize precise control of the mobile formwork through-hole operation, improve construction efficiency, and reduce manpower requirements.

[0006] The present invention provides an automated mobile mold frame through-hole device, comprising a main box beam, a guide beam mechanism, a supporting mechanism, a mold hanging mechanism and a control system, wherein the main box beam is provided with a main box beam longitudinal movement mechanism, and the main box beam longitudinal movement mechanism is used to adjust the main box beam to move through the hole; the guide beam mechanism comprises a guide beam connected to the front end of the main box beam and a lifting crane movably arranged on the guide beam; the supporting mechanism comprises a rear walking mechanism, a main middle support leg, a fixed middle support leg and a front support leg, the rear walking mechanism is supported and connected to the rear end of the main box beam, the main middle support leg is movably supported on the main box beam longitudinal movement mechanism, and the fixed middle support leg is supported The support is connected to the front end of the main box beam, and the front support leg is movably supported on the guide beam; the hanging formwork mechanism includes a cantilever beam, a hanging curved beam, an outer formwork device, an inner formwork device and an inverted trolley, the cantilever beam is connected to the side of the main box beam, the hanging curved beam is connected to the cantilever beam, the outer formwork device and the inner formwork device are arranged in the hanging curved beam, and the inverted trolley is used to lift the outer formwork device and the inner formwork device; the control system includes a main controller, and the main controller is used to respectively control the lifting crane, the main middle support leg, the fixed middle support leg, the front support leg, the cantilever beam and the inverted trolley.

[0007] According to an automated mobile mold frame through-hole device provided by the present invention, the control system also includes a crane controller for controlling the crane, a main middle leg controller for controlling the main middle leg, a fixed middle leg controller for controlling the fixed middle leg, a front leg controller for controlling the front leg, a cantilever controller for controlling the cantilever beam and a reverse trolley controller for controlling the reverse trolley, and the main controller is respectively connected to the crane controller, the main middle leg controller, the fixed middle leg controller, the front leg controller, the cantilever beam controller and the reverse trolley controller.

[0008] According to an automated mobile mold frame through-hole device provided by the present invention, position sensors are provided on the main box girder, the lifting crane, the rear walking mechanism, the main middle support leg, the fixed middle support leg, the front support leg, the cantilever beam, and the inverted trolley, and the position sensors are electrically connected to the main controller.

[0009] According to an automated mobile mold frame through-hole device provided by the present invention, the main center leg includes a trolley, and the trolley is provided with a longitudinal shift reversing cylinder, a longitudinal shift slide and a main center leg lifting cylinder. The longitudinal shift reversing cylinder and the main center leg lifting cylinder are respectively connected to the main center leg controller.

[0010] The main box beam longitudinal movement mechanism includes a longitudinal movement guide rail and a longitudinal movement orifice plate arranged at the bottom of the main box beam.

[0011] The longitudinal movement slide is cooperatively connected with the longitudinal movement guide rail; the piston end of the longitudinal movement reverse transportation cylinder is used to switch in the multiple reverse transportation holes on the longitudinal movement orifice plate to move the main box beam relative to the main middle support leg; the main middle support leg lifting cylinder is used to lift and support the main box beam.

[0012] According to an automated mobile mold frame through-hole device provided by the present invention, a lifting cylinder is provided on both the fixed middle leg and the front leg, the lifting cylinder of the fixed middle leg is connected to the fixed middle leg controller, and the lifting cylinder of the front leg is connected to the front leg controller.

[0013] According to an automated mobile mold frame through-hole device provided by the present invention, the cantilever beam includes two triangular truss structures symmetrically arranged on the sides of the main box beam, each of the triangular truss structures is provided with a mold opening cylinder, and the hanging curved beam is connected to the triangular truss structure through the mold opening cylinder, and the two mold opening cylinders are synchronously extended and retracted to open or close the hanging curved beam.

[0014] According to an automated mobile mold frame through-hole device provided by the present invention, the longitudinal movement and reversing cylinder, the main middle leg lifting cylinder, the fixed middle leg lifting cylinder, the front leg lifting cylinder, and the mold opening cylinder are all provided with pressure sensors, and the pressure sensors are electrically connected to the main controller.

[0015] The present invention also provides a method for performing a through-hole operation on a movable mold frame, which is applicable to any of the above-mentioned automated movable mold frame through-hole devices and includes the following steps.

[0016] The mobile formwork is hoisted so that the rear walking mechanism and the main middle leg of the mobile formwork are located on the first pier, the fixed middle leg of the mobile formwork is located on the second pier, and the front leg of the mobile formwork is located on the third pier. The main middle leg and the fixed middle leg support the mobile formwork.

[0017] The control system controls the main middle legs to retract, and the mobile mold frame is supported by the rear walking mechanism and the fixed middle legs.

[0018] The control system controls the main center support leg to cooperate with the main box beam longitudinal movement mechanism of the main box beam, so that the main center support leg moves relative to the main box beam, and the main center support leg is transported from the first pier to the second pier.

[0019] The main middle leg is temporarily fixed on the second pier, and the control system controls the contraction of the fixed middle leg to enable the rear walking mechanism and the front leg to support the movable formwork.

[0020] The control system controls the main center support leg to cooperate with the main box girder longitudinal movement mechanism of the main box girder, so that the main box girder moves relative to the main center support leg, and moves the main box girder from between the first pier and the second pier to between the second pier and the third pier.

[0021] The control system controls the main middle leg and the fixed middle leg to lift up, and the main middle leg and the fixed middle leg support the movable mold frame, and the rear walking mechanism and the front legs are released.

[0022] The control system controls the overhead crane to transport the front support leg to the next pier, and controls the hanging curved beam of the mobile formwork to close on the cantilever beam.

[0023] The control system controls the inverted trolley to lift the outer mold device and the inner mold device to the hanging curved beam to start the pouring operation.

[0024] According to a through-hole operation method of a mobile formwork provided by the present invention, the main center leg is transported from the first pier to the second pier, including: a control system controls the main center leg lifting cylinder of the main center leg to contract, so that the main center leg is separated from the first pier; a control system controls the longitudinal shift reversing cylinder of the main center leg to switch within a plurality of reversing holes on the longitudinal shift orifice plate of the main box beam, and based on the cooperation between the longitudinal shift slide of the main center leg and the longitudinal shift guide rail of the main box beam, the main center leg is transported from the first pier to the second pier.

[0025] According to a through-hole operation method of a movable formwork provided by the present invention, moving the main box girder from between the first pier and the second pier to between the second pier and the third pier includes: the main middle support leg is temporarily fixed on the second pier, the control system controls the longitudinal shift and reverse cylinder of the main middle support leg to switch within a plurality of reverse holes on the longitudinal shift orifice plate of the main box girder, and based on the longitudinal shift slide of the main middle support leg cooperating with the longitudinal shift guide rail of the main box girder, the main box girder is moved relative to the main middle support leg until it reaches between the second pier and the third pier.

[0026] The automated mobile formwork drilling device and drilling method provided by the present invention achieves precise automated control of each stage and equipment during the mobile formwork drilling operation by controlling the crane, main center legs, fixed center legs, front legs, cantilever beam, and inverted trolley through the main controller of the control system. The automated drilling program is set by the control system to precisely control the drilling process, including the reversal and longitudinal movement of the main center legs, the longitudinal movement of the main box beam, the retracted support of the fixed center legs and front legs, and the opening and closing of the cantilever beam. These operations are automatically executed through programmed instructions, reducing human intervention and improving operational safety and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of the automated movable die frame through-hole device provided by the present invention.

[0029] Figure 2 It is a schematic diagram of the control principle of the automatic movable mold frame through-hole device provided by the present invention.

[0030] Figure 3 It is a vertical cross-sectional schematic diagram of the automated movable die frame through-hole device provided by the present invention.

[0031] Figure 4 It is a schematic diagram of the matching structure of the main center support leg and the main box beam provided by the present invention.

[0032] Figure 5 yes Figure 4 Right view of .

[0033] Figure numerals: 1. main box girder; 100. main box girder longitudinal movement mechanism; 101. longitudinal movement guide rail; 102. longitudinal movement orifice plate; 2. guide beam; 3. hoisting crane; 4. rear traveling mechanism; 5. main middle support leg; 501. trolley; 502. longitudinal movement reversing cylinder; 503. longitudinal movement slide; 504. main middle support leg lifting cylinder; 6. fixed middle support leg; 7. front support leg; 8. cantilever beam; 801. mold opening cylinder; 9. hanging curved beam; 10. outer mold device; 11. inner mold device; 12. reversing trolley; 13. control system; 131. main controller; 132. hoisting crane controller; 133. main middle support leg controller; 134. fixed middle support leg controller; 135. front support leg controller; 136. cantilever beam controller; 137. reversing trolley controller. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present invention.

[0036] In describing the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0037] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0039] The following combination Figures 1 to 5 The invention describes an automatic movable die frame through-hole device and a through-hole operation method thereof.

[0040] The present invention provides an automatic movable die frame through-hole device, combined with Figure 1 and Figure 2As shown, it includes a main box girder 1, a guide beam mechanism, a supporting mechanism, a hanging mold mechanism and a control system 13. The main box girder 1 is provided with a main box girder longitudinal movement mechanism 100, which is used to adjust the main box girder 1 to move through the hole; the guide beam mechanism includes a guide beam 2 connected to the front end of the main box girder 1 and a lifting crane 3 movably arranged on the guide beam 2; the supporting mechanism includes a rear walking mechanism 4, a main middle support leg 5, a fixed middle support leg 6 and a front support leg 7. The rear walking mechanism 4 is supported and connected to the rear end of the main box girder 1, the main middle support leg 5 is movably supported on the main box girder longitudinal movement mechanism 100, and the fixed middle support leg 6 is supported and connected to the main At the front end of the box beam 1, the front support leg 7 is movably supported on the guide beam 2; the hanging formwork mechanism includes a cantilever beam 8, a hanging curved beam 9, an outer formwork device 10, an inner formwork device 11 and a reversing trolley 12, the cantilever beam 8 is connected to the side of the main box beam 1, the hanging curved beam 9 is connected to the cantilever beam 8, the outer formwork device 10 and the inner formwork device 11 are arranged in the hanging curved beam 9, and the reversing trolley 12 is used to lift the outer formwork device 10 and the inner formwork device 11; the control system 13 includes a main controller 131, the main controller 131 is used to control the lifting crane 3, the main middle support leg 5, the fixed middle support leg 6, the front support leg 7, the cantilever beam 8 and the reversing trolley 12 respectively.

[0041] It is understood that the automated mobile formwork drilling device of this embodiment controls the crane 3, the main center leg 5, the fixed center leg 6, the front leg 7, the cantilever beam 8, and the inverted trolley 12 respectively through the main controller 131 of the control system 13, thereby achieving precise automated control of each stage and equipment during the mobile formwork drilling operation. The automated drilling program is set by the control system 13, and the drilling operation process is precisely controlled, including the inverted position and longitudinal movement of the main center leg 5, the longitudinal movement of the main box girder 1, the retracted support of the fixed center leg 6 and the front leg 7, and the opening and closing of the cantilever beam 8. These operations are automatically executed through programmed instructions, reducing human intervention and improving operation safety and efficiency.

[0042] In some embodiments of the automated mobile die frame through-hole device of the present invention, see Figure 2 As shown, the control system 13 also includes a crane controller 132 for controlling the crane 3, a main center leg controller 133 for controlling the main center leg 5, a fixed center leg controller 134 for controlling the fixed center leg 6, a front leg controller 135 for controlling the front leg 7, a cantilever controller 136 for controlling the cantilever beam 8, and a reverse trolley controller 137 for controlling the reverse trolley 12. The main controller 131 is respectively connected to the crane controller 132, the main center leg controller 133, the fixed center leg controller 134, the front leg controller 135, the cantilever beam controller 136, and the reverse trolley controller 137. This embodiment adopts the form of independent control to achieve independent control of each component of the mobile template, and accurately regulates each stage of the mobile template through-hole operation process.

[0043] Furthermore, in some specific examples, position sensors are provided on the main box girder 1, the overhead crane 3, the rear traveling mechanism 4, the main center leg 5, the fixed center leg 6, the front leg 7, the cantilever beam 8, and the inverting trolley 12, and the position sensors are electrically connected to the main controller 131. The longitudinal inverting cylinder 502, the main center leg lifting cylinder 504, the lifting cylinder of the fixed center leg 6, the lifting cylinder of the front leg 7, and the mold opening cylinder 801 are all provided with pressure sensors, and the pressure sensors are electrically connected to the main controller 131. The position and pressure of each component of the mobile mold frame through-hole device are monitored by built-in sensors, and real-time feedback is provided to the control system 13. The cylinder thrust and speed are automatically adjusted through an algorithm to maintain the balance and stability of the mold frame.

[0044] In some embodiments of the automated mobile mold frame through-hole device of the present invention, the main center leg 5 includes a trolley 501, on which are provided a longitudinal reverse oil cylinder 502, a longitudinal slide 503 and a main center leg lifting oil cylinder 504, and the longitudinal reverse oil cylinder 502 and the main center leg lifting oil cylinder 504 are respectively connected to the main center leg controller 133. The main box girder longitudinal movement mechanism 100 includes a longitudinal guide rail 101 and a longitudinal orifice plate 102 provided at the bottom of the main box girder 1. The longitudinal slide 503 is cooperatively connected with the longitudinal guide rail 101; the piston end of the longitudinal reverse oil cylinder 502 is used to switch within the multiple reverse holes on the longitudinal orifice plate 102, so that the main box girder 1 moves relative to the main center leg 5; the main center leg lifting oil cylinder 504 is used to lift and support the main box girder 1.

[0045] It is understood that the main box girder 1 is composed of two symmetrical sets of steel box girders, connected by a transverse joint to form the main frame. The main box girder 1 is the primary load-bearing component during the formwork casting phase. The middle truss of the main box girder 1 is transversely connected to support the inverted transport trolley 12. The main box girder 1 is designed to be completely symmetrical front to back, allowing for reverse construction. A longitudinal track 101 and a longitudinal orifice plate 102 are installed on both sides of the bottom of the main box girder 1. During the casting phase, the bottom of the longitudinal track 101 is maintained at a distance of 2000mm from the top surface of the concrete beam.

[0046] See also Figure 4 and Figure 5As shown, the main center leg 5 is one of the primary supports for the mobile formwork during both the casting and longitudinal movement phases, and includes three major functions: longitudinal movement, transverse movement, and lifting. The trolley 501 supporting the main center leg 5 is equipped with a longitudinal reversing cylinder 502, a longitudinal sliding plate 503, and a main center leg lifting cylinder 504. The longitudinal reversing cylinder 502 is used for both longitudinal movement of the mobile formwork and reversing of the main center leg 5. When the entire main center leg 5 requires fine-tuning transversely, the transverse mechanism on the trolley 501 is utilized. A longitudinal sliding plate 503 is located above the trolley 501, and a transverse sliding plate is located below the trolley 501 seat. Both sliding plates are made of MGE. A main center leg lifting cylinder 504 is also installed on the trolley 501, which lifts the mobile formwork during the casting phase. During the longitudinal movement of the mobile formwork, the main center leg 5 requires temporary anchoring to the concrete beam surface.

[0047] When the mobile formwork moves longitudinally, the main center leg 5 is temporarily fixed on the pier, and the control system 13 controls the longitudinal reversing cylinder 502 of the main center leg 5 to switch in multiple reversing holes on the longitudinal shift orifice plate 102 of the main box girder 1. Based on the cooperation between the longitudinal shift slide 503 of the main center leg 5 and the longitudinal shift guide rail 101 of the main box girder 1, the main box girder 1 moves relative to the main center leg 5.

[0048] When the main center leg 5 is reversed, the control system 13 controls the main center leg lifting cylinder 504 of the main center leg 5 to retract, so that the main center leg 5 is separated from the bridge pier; the control system 13 controls the longitudinal shift reverse cylinder 502 of the main center leg 5 to switch in the multiple reverse holes on the longitudinal shift orifice plate 102 of the main box girder 1, and based on the cooperation between the longitudinal shift slide plate 503 of the main center leg 5 and the longitudinal shift guide rail 101 of the main box girder 1, the main center leg 5 is reversed to the front bridge pier.

[0049] Guide beam 2 provides support for the formwork's longitudinal movement through the hole and for the reverse movement of its front legs 7, thereby enabling the formwork's forward movement from span to span. Guide beam 2 consists of three sections, totaling six sections, and its cross-section is a triangular truss. High-strength bolts connect guide beams 2 to each other and to the main box girder 1. A longitudinal track is installed at the bottom of guide beam 2, allowing it to move forward on the wheel train of the front legs 7 during longitudinal movement.

[0050] The rear running mechanism 4 is one of the primary supports for longitudinal movement of the main box girder 1 and for reversing the main center leg 5. The upper portion of the rear running mechanism 5 is flange-connected to the bottom of the main box girder 1, while the lower portion is equipped with a Φ600mm passive running gear system. During longitudinal movement of the formwork across the span, the rear running mechanism 5 can move forward along the beam track with the formwork. Pads are installed beneath the beam track of the rear running mechanism 5, creating a slope within the initial 5m range to facilitate elevation control and reversing the center leg. The rear running mechanism 5 gear system requires regular grease maintenance.

[0051] In some embodiments of the automated mobile mold frame through-hole device of the present invention, a lifting cylinder is provided on both the fixed middle leg 6 and the front leg 7. The lifting cylinder of the fixed middle leg 6 is connected to the fixed middle leg controller 134, and the lifting cylinder of the front leg 7 is connected to the front leg controller 135.

[0052] The fixed center leg 6 is a major support for the entire mobile formwork casting construction and the reverse transportation of the main center leg 5. Its upper part is bolted to the main box girder 1, and the lower part is equipped with a jacking cylinder, which is supported at the top of the pier. During the casting state, the mobile formwork is lifted by the jacking cylinder, and during longitudinal movement, the jacking cylinder needs to be completely retracted to avoid the pier pad stone. The fixed center leg 6 is designed with two crossed diagonal support rods, which lock the pier during casting; during longitudinal movement through the hole, they should be removed to avoid the front leg 7. The fixed center leg 6 cooperates with the jacking cylinder of the main center leg 5 to complete the lifting and lowering of the entire mold bed.

[0053] The front support leg 7 is divided into three sections: the upper part, the middle part, and the lower part, and each section is connected by bolts and pins. The upper part of the front support leg 7 is composed of 8 Φ300 wheel systems, the middle part is the connecting column, and the lower part is the anchor chassis. During the construction of the last span, the upper and lower parts of the front support leg 7 should be directly connected and anchored on the poured beam surface. The function of the front support leg 7 is to support the entire machine during the longitudinal movement of the main frame 1. In the non-working state, it is hoisted to the front pier by the crane 3 and installed and anchored. When the bridge is not being constructed, the front support leg 7 needs to remove the columns and diagonal braces, and the base must be directly connected to the upper wheel set for installation.

[0054] In other embodiments of the automatic mobile die frame through-hole device of the present invention, see Figure 3 As shown, the cantilever beam 8 includes two triangular truss structures symmetrically arranged on the sides of the main box beam 1. Each triangular truss structure is provided with a mold opening cylinder 801. The hanging curved beam 9 is connected to the triangular truss structure through the mold opening cylinder 801. The two mold opening cylinders 801 are synchronously extended and retracted to open or close the hanging curved beam 9.

[0055] Continue to see Figure 3 As shown, the cantilever beam 8 adopts a triangular truss structure, which is used to carry the hanging curved beam 9. The cantilever beam 8 is designed with a mold opening cylinder 801 for opening and closing the hanging curved beam 9. The hanging curved beam 9 bears the weight from the external mold device 10. The inner side of the hanging curved beam 9 is provided with a support seat for the bottom, side, and wing mold struts. The hanging curved beams 9 are distributed corresponding to the cantilever beams 8 respectively. The hanging curved beam 9 can move horizontally on the cantilever beam 8. When the mold is opened, the hanging curved beam 9 drives the external mold device 10 to open to both sides along the track of the cantilever beam 8, thereby realizing the mold opening. The hanger is made of φ32 high-strength fine-rolled threaded steel bars, and each hanging curved beam 9 is equipped with 4 hangers. The upper end of the hanger is connected to the main box beam 1, and the lower end is fixed to the hanging curved beam 9. In the pouring state, the hanger bears the weight from the hanging curved beam 9 and transfers its weight to the main box beam 1. Before opening the mold, the hanger needs to be removed.

[0056] The outer formwork assembly 10 includes non-standard formwork, standard formwork, supports, and railings. Standard formwork is available in sections of 4m and 5m, depending on the working environment. Each formwork is bolted together horizontally and vertically. To ensure easy adjustment during formwork arching, a 2mm expansion joint is provided at the transverse bridge joint of the wing formwork. To prevent leakage through this joint, a 10mm-thick rubber sheet is inserted between the two forms. During mold opening and closing, the formwork is opened as a single piece; only the bolts in the center seam of the bottom formwork need to be removed. The arching curve of the formwork follows the characteristics of a quadratic parabola, with its maximum value at mid-span determined based on data provided by the bridge designer. The arching curves of the side and bottom forms must have the same curve and amount. Supports support and adjust the formwork, transmitting the forces it bears to the main frame structure. To ensure safety during construction, the formwork is equipped with a movable platform and railings. The inner formwork assembly 11 and the end formwork system are both removable and loose. The weight of each formwork is controlled to ensure ease of transportation. During span change construction, it is only necessary to remove or install four sections of 2-meter standard section formwork to achieve a span change between 32 meters and 24 meters.

[0057] The present invention further provides a method for performing a through-hole operation on a movable mold frame, which is applicable to the automated through-hole operation device for a movable mold frame according to any one of the above embodiments and includes the following steps S1 to S8.

[0058] S1. Hoist the mobile formwork so that the rear walking mechanism 4 and the main middle leg 5 of the mobile formwork are located on the first pier, the fixed middle leg 6 of the mobile formwork is located on the second pier, and the front leg 7 of the mobile formwork is located on the third pier. The main middle leg 5 and the fixed middle leg 6 support the mobile formwork.

[0059] S2. The control system 13 controls the main middle leg 5 to retract, and the rear walking mechanism 4 and the fixed middle leg 6 support the movable mold frame.

[0060] S3. The control system 13 controls the main center support leg 5 to cooperate with the main box girder longitudinal movement mechanism 100 of the main box girder 1, so that the main center support leg 5 moves relative to the main box girder 1, and the main center support leg 5 is transported from the first pier to the second pier.

[0061] Specifically, the control system 13 controls the main center leg lifting cylinder 504 of the main center leg 5 to retract, so that the main center leg 5 is separated from the first pier; the control system 13 controls the longitudinal movement reversing cylinder 502 of the main center leg 5 to switch within the multiple reversing holes on the longitudinal movement orifice plate 102 of the main box girder 1, and based on the longitudinal movement slide plate 503 of the main center leg 5 and the longitudinal movement guide rail 101 of the main box girder 1, the main center leg 5 is reversed from the first pier to the second pier.

[0062] S4. The main middle support leg 5 is temporarily fixed on the second pier, and the control system 13 controls the fixed middle support leg 6 to retract so that the rear walking mechanism 4 and the front support leg 7 support the movable formwork.

[0063] S5. The control system 13 controls the main center support leg 5 to cooperate with the main box girder longitudinal movement mechanism 100 of the main box girder 1, so that the main box girder 1 moves relative to the main center support leg 5, and moves the main box girder 1 from between the first pier and the second pier to between the second pier and the third pier.

[0064] Specifically, the main center leg 5 is temporarily fixed on the second pier, and the control system 13 controls the longitudinal shift reversing cylinder 502 of the main center leg 5 to switch in the multiple reversing holes on the longitudinal shift orifice plate 102 of the main box girder 1. Based on the cooperation between the longitudinal shift slide 503 of the main center leg 5 and the longitudinal shift guide rail 101 of the main box girder 1, the main box girder 1 moves relative to the main center leg 5 until it reaches between the second pier and the third pier.

[0065] S6, the control system 13 controls the main center leg 5 and the fixed center leg 6 to lift up, and the main center leg 5 and the fixed center leg 6 support the movable mold frame, and the rear walking mechanism 4 and the front leg 7 are free.

[0066] The S7 control system 13 controls the overhead crane 3 to transport the front support leg 7 to the next pier, and controls the hanging curved beam 9 of the mobile formwork to close on the cantilever beam 8.

[0067] S8. The control system 13 controls the inverted transport trolley 12 to lift the outer mold device 10 and the inner mold device 11 to the hanging curved beam 9 and start the pouring operation.

[0068] The above-mentioned hole-passing operation process of the movable formwork is a standard span operation process. By adopting the hole-passing operation method of the movable formwork of the present invention, continuous beam operation, variable span operation and curved hole-passing operation can also be implemented.

[0069] Moving the formwork through a continuous beam means that the formwork can move across the surface of a poured continuous beam or standard span to reach the next span. When crossing a continuous beam, the formwork lowers the fixed center leg 6 and front leg 7 as it passes through the beam. The remaining steps for crossing a span are the same as for a standard span.

[0070] Variable span operation refers to the operation of moving the formwork to change between spans of different lengths. Taking the operation from 32.7m span to 24.7m span as an example, in order to adapt to the variable span construction, a 24.7m span support point is designed on the main box girder 1. The main middle support leg 5 is moved to the 24.7m span support point; the tail 8-meter bottom formwork is removed; the pier top side wing formwork is moved to the pier top for connection, and the other hole-passing steps are the same as those for the standard span.

[0071] To pass a hole through a curve, the formwork needs to be moved and swung. First, remove the bolts at the hinge of the front leg 7 to allow the front leg 7 wheel system to rotate slightly. The main steps are as follows: After the mold is dropped, the main center leg 5 is reversed into position; the main center leg 5 is moved inward by about 150mm to 300mm, basically aligning with the front leg 7; the fixed center leg 6 is retracted, and when the formwork moves longitudinally until the guide beam 2 enters the front leg 7, the main center leg 5 and the front leg 7 are adjusted again so that the formwork track enters the wheel tread of the front leg 7; the formwork moves longitudinally into position, and the front auxiliary leg is accurately aligned. The other hole-passing steps are the same as for passing a standard span.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automated mobile die frame through-hole device, characterized in that: include: A main box girder (1) is provided with a main box girder longitudinal movement mechanism (100), wherein the main box girder longitudinal movement mechanism (100) is used to adjust the main box girder (1) to move through a hole; A guide beam mechanism, comprising a guide beam (2) connected to the front end of the main box beam (1) and a crane (3) movably arranged on the guide beam (2); A support mechanism comprising a rear traveling mechanism (4), a main middle supporting leg (5), a fixed middle supporting leg (6) and a front supporting leg (7), wherein the rear traveling mechanism (4) is supported and connected to the rear end of the main box beam (1), the main middle supporting leg (5) is movably supported on the main box beam longitudinal movement mechanism (100), the fixed middle supporting leg (6) is supported and connected to the front end of the main box beam (1), and the front supporting leg (7) is movably supported on the guide beam (2); A formwork hanging mechanism comprises a cantilever beam (8), a hanging curved beam (9), an outer formwork device (10), an inner formwork device (11) and a transfer trolley (12), wherein the cantilever beam (8) is connected to the side of the main box beam (1), the hanging curved beam (9) is connected to the cantilever beam (8), the outer formwork device (10) and the inner formwork device (11) are arranged in the hanging curved beam (9), and the transfer trolley (12) is used for lifting the outer formwork device (10) and the inner formwork device (11); The control system (13) includes a main controller (131), wherein the main controller (131) is used to respectively control the overhead crane (3), the main middle support leg (5), the fixed middle support leg (6), the front support leg (7), the cantilever beam (8) and the inverting trolley (12).

2. The automated movable die frame through-hole device according to claim 1, characterized in that: The control system (13) further includes a crane crane controller (132) for controlling the crane crane (3), a main middle leg controller (133) for controlling the main middle leg (5), a fixed middle leg controller (134) for controlling the fixed middle leg (6), a front leg controller (135) for controlling the front leg (7), a cantilever beam controller (136) for controlling the cantilever beam (8), and a reverse trolley controller (137) for controlling the reverse trolley (12). The main controller (131) is respectively connected to the crane crane controller (132), the main middle leg controller (133), the fixed middle leg controller (134), the front leg controller (135), the cantilever beam controller (136), and the reverse trolley controller (137).

3. The automated movable die frame through-hole device according to claim 2, characterized in that: Position sensors are provided on the main box girder (1), the overhead crane (3), the rear traveling mechanism (4), the main middle support leg (5), the fixed middle support leg (6), the front support leg (7), the cantilever beam (8), and the inverted transport trolley (12), and the position sensors are electrically connected to the main controller (131).

4. The automated movable die frame through-hole device according to claim 2 or 3, characterized in that: The main center leg (5) includes a trolley (501), on which a longitudinal shifting and reversing oil cylinder (502), a longitudinal shifting slide (503) and a main center leg lifting oil cylinder (504) are provided, and the longitudinal shifting and reversing oil cylinder (502) and the main center leg lifting oil cylinder (504) are respectively connected to the main center leg controller (133); The main box beam longitudinal movement mechanism (100) comprises a longitudinal movement guide rail (101) and a longitudinal movement orifice plate (102) arranged at the bottom of the main box beam (1); The longitudinal sliding plate (503) is connected to the longitudinal guide rail (101); the piston end of the longitudinal reverse oil cylinder (502) is used to switch in a plurality of reverse holes on the longitudinal orifice plate (102) so that the main box girder (1) moves relative to the main middle support leg (5); the main middle support leg lifting oil cylinder (504) is used to lift and support the main box girder (1).

5. The automated movable die frame through-hole device according to claim 4, characterized in that: The fixed middle leg (6) and the front leg (7) are both provided with a lifting cylinder. The lifting cylinder of the fixed middle leg (6) is connected to the fixed middle leg controller (134), and the lifting cylinder of the front leg (7) is connected to the front leg controller (135).

6. The automated movable die frame through-hole device according to claim 5, characterized in that: The cantilever beam (8) comprises two triangular truss structures symmetrically arranged on the sides of the main box beam (1), each of the triangular truss structures is provided with a mold opening cylinder (801), and the hanging curved beam (9) is connected to the triangular truss structure via the mold opening cylinder (801), and the two mold opening cylinders (801) are synchronously extended and retracted to open or close the hanging curved beam (9).

7. The automated movable die frame through-hole device according to claim 6, characterized in that: The longitudinal shifting and reversing oil cylinder (502), the main middle leg lifting oil cylinder (504), the lifting oil cylinder of the fixed middle leg (6), the lifting oil cylinder of the front leg (7), and the mold opening oil cylinder (801) are all provided with pressure sensors, and the pressure sensors are electrically connected to the main controller (131).

8. A method for drilling holes on a movable mold frame, characterized in that: The automated movable mold frame through-hole device according to any one of claims 1 to 7 comprises: The mobile formwork is hoisted so that the rear walking mechanism (4) and the main middle support leg (5) of the mobile formwork are located on the first bridge pier, the fixed middle support leg (6) of the mobile formwork is located on the second bridge pier, and the front support leg (7) of the mobile formwork is located on the third bridge pier, wherein the main middle support leg (5) and the fixed middle support leg (6) support the mobile formwork; The control system (13) controls the main middle support leg (5) to retract, and the movable mold frame is supported by the rear walking mechanism (4) and the fixed middle support leg (6); The control system (13) controls the main middle support leg (5) to cooperate with the main box girder longitudinal movement mechanism (100) of the main box girder (1), so that the main middle support leg (5) moves relative to the main box girder (1), and the main middle support leg (5) is transported from the first pier to the second pier; The main middle support leg (5) is temporarily fixed on the second pier, and the control system (13) controls the fixed middle support leg (6) to retract so that the rear walking mechanism (4) and the front support leg (7) support the movable formwork; The control system (13) controls the main middle support leg (5) to cooperate with the main box girder longitudinal movement mechanism (100) of the main box girder (1), so that the main box girder (1) moves relative to the main middle support leg (5), and moves the main box girder (1) from between the first pier and the second pier to between the second pier and the third pier; The control system (13) controls the main middle support leg (5) and the fixed middle support leg (6) to be lifted, and the main middle support leg (5) and the fixed middle support leg (6) support the movable mold frame, and the rear walking mechanism (4) and the front support leg (7) are free; The control system (13) controls the crane (3) to transport the front support leg (7) to the next pier, and controls the hanging curved beam (9) of the mobile formwork to close on the cantilever beam (8); The control system (13) controls the inverted transport trolley (12) to lift the outer mold device (10) and the inner mold device (11) to the hanging curved beam (9) to start the pouring operation.

9. The through-hole operation method of the movable mold frame according to claim 8, characterized in that: The method of transporting the main middle support leg (5) from the first bridge pier to the second bridge pier comprises: The control system (13) controls the main middle leg lifting cylinder (504) of the main middle leg (5) to retract, so that the main middle leg (5) is separated from the first pier; The control system (13) controls the longitudinal shift reverse oil cylinder (502) of the main middle support leg (5) to switch within a plurality of reverse holes on the longitudinal shift hole plate (102) of the main box girder (1), and based on the cooperation between the longitudinal shift slide plate (503) of the main middle support leg (5) and the longitudinal shift guide rail (101) of the main box girder (1), the main middle support leg (5) is reversed from the first pier to the second pier.

10. The through-hole operation method of the movable mold frame according to claim 8, characterized in that: The moving of the main box girder (1) from between the first pier and the second pier to between the second pier and the third pier comprises: The main center leg (5) is temporarily fixed on the second pier, and the control system (13) controls the longitudinal shift reverse oil cylinder (502) of the main center leg (5) to switch in a plurality of reverse holes on the longitudinal shift hole plate (102) of the main box girder (1). Based on the longitudinal shift slide (503) of the main center leg (5) cooperating with the longitudinal shift guide rail (101) of the main box girder (1), the main box girder (1) moves relative to the main center leg (5) until it reaches between the second pier and the third pier.

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