Intelligent hydraulic formwork system and versatile method for precast concrete box girder

Abstract

The present application relates to the field of concrete box girder construction, especially to a prefabricated concrete box girder intelligent hydraulic side formwork system and a multipurpose method. The hydraulic side formwork system comprises an inner side formwork system (3) and an outer side formwork system (4); the inner side formwork system (3) and the outer side formwork system (4) each comprise a support corresponding to an inner side formwork support (301) and an outer side formwork support (403); a multipurpose support leg system (8) is arranged below the inner side formwork support (301) and the outer side formwork support (403); the multipurpose support leg system (8) comprises two rows of outer support leg systems (801) and inner support leg systems (802) arranged side by side; by changing the inclination angle of the support surface, the inclination angle of the side surface of the concrete box girder can be changed, and the system can also be used for concrete box girder post-release.

Description

Technical Field

[0001] This invention relates to the field of concrete box girder construction, and more particularly to an intelligent hydraulic side formwork system and multi-purpose method for precast concrete box girders. Background Technology

[0002] The hydraulic side formwork used in the existing precast concrete box girder casting construction of highway engineering has inherent defects in practical engineering applications, including redundant and complicated installation procedures, lengthy disassembly and alignment processes, insufficient positioning accuracy due to repeated assembly, easy deviation in forming dimensions, high dependence on manual operation for formwork gap and alignment adjustment, poor synchronization of multiple sets of hydraulic side formwork in linkage operation, and great difficulty in coordinated control. Specifically, these defects are as follows: Low efficiency in template installation and alignment: Traditional hydraulic side molds require segmented assembly and multiple manual calibrations. The installation process involves many steps and is time-consuming, making it impossible to achieve rapid positioning and precise alignment, which seriously affects the rhythm of prefabrication production line operations.

[0003] Repeated positioning accuracy is difficult to guarantee: after repeated use, the side formwork is prone to wear and deformation. Without intelligent positioning and automatic compensation mechanisms, the alignment, verticality and spacing deviations are large after repeated assembly, and the cross-sectional dimensions of the box girder are inconsistent.

[0004] High reliance on manual labor and poor adjustment precision: Template gaps, flatness, and tilt angles all rely on manual adjustment based on experience, without standardized adjustment procedures or quantitative control methods, resulting in unstable adjustment quality.

[0005] Poor synchronization and coordination among multiple templates: The inner and outer templates, the upper edge template, and the support leg system are adjusted independently without unified coordination and control, which easily leads to uneven stress and asynchronous opening and closing, resulting in template deformation and missing corners or edges of components.

[0006] The integration of mold adjustment and demolding is low: the angle adjustment and demolding action belong to two separate systems, which is cumbersome to operate and not well connected, and is prone to problems such as difficulty in demolding, sticking to the mold, and damage to the beam.

[0007] The vibration method is rough and the density is uneven: Traditional vibration is done at fixed points or manually by hand. It does not have the function of automatic movement along the template line and precise vibration section by section. It is easy to miss vibration or over-vibrate, which affects the internal quality and appearance quality of the box girder.

[0008] Poor compatibility with the pedestal and inability to operate in a continuous flow: The side formwork is used in conjunction with the fixed pedestal, which cannot be moved. The installation, dismantling, maintenance and beam movement of the formwork interfere with each other, resulting in low formwork turnover rate, low site utilization rate and high overall cost.

[0009] The aforementioned defects directly lead to time-consuming and labor-intensive formwork installation and dismantling, extended construction period, difficulty in ensuring the consistency of box girder dimensions and appearance quality, significant constraints on overall construction efficiency, and simultaneously high labor costs, formwork maintenance costs, and construction period costs.

[0010] Currently, the types and forms of formwork used in the construction of precast concrete box girders for highway engineering are diverse. Existing traditional formwork generally suffers from several drawbacks in actual on-site application: cumbersome installation and assembly procedures, difficulty in disassembly and adjustment; difficulty in ensuring accurate repositioning after multiple reuses, resulting in significant molding deviations; high reliance on manual operation and calibration throughout the construction process, leading to low automation; and the precast platforms are mostly fixed structures, lacking flexible on-site transport and relocation capabilities. Due to the combined effects of these factors, the overall efficiency of box girder precasting is difficult to improve effectively, and the comprehensive construction costs, including labor input, site occupation, formwork wear and tear, and maintenance, remain persistently high. Summary of the Invention

[0011] Purpose of the invention: To provide a more effective intelligent movable steel platform and preparation method for precast concrete box girders, the specific purpose of which is described in the several substantial technical effects in the specific implementation section.

[0012] To achieve the above objectives, the present invention adopts the following technical solution: Option 1: Intelligent hydraulic side formwork system and multi-purpose method for precast concrete box girders; the core of this option is the side formwork. Option 2: Intelligent movable steel platform and preparation method for precast concrete box girders; the core of this option is the steel platform in the middle. in: Option 1 and Option 2 are closely related and belong to a tightly integrated technical whole, but each option has its own focus. To achieve the above objectives, the present invention adopts the following technical solution: Option 1: The intelligent hydraulic side formwork system for precast concrete box girders is characterized in that the hydraulic side formwork system includes an inner side formwork system 3 and an outer side formwork system 4; Both the inner mold system 3 and the outer mold system 4 include brackets, corresponding to the inner mold bracket 301 and the outer mold bracket 403, respectively. The bracket supports the support surfaces, which correspond to the inner mold support surface 302 of the inner mold system 3 and the outer mold support surface 402 of the outer mold system 4, respectively. A multi-purpose support leg system 8 is arranged below both the inner mold support 301 and the outer mold support 403; the multi-purpose support leg system 8 includes two rows of outer support leg systems 801 and inner support leg systems 802 arranged in parallel. An angle adjustment and demolding system 7 is arranged below both the inner mold support 301 and the outer mold support 403; The angle adjustment and demolding system 7 includes an angle adjustment and demolding system base 701, on which an angle adjustment and demolding system hydraulic cylinder 702 is arranged perpendicular to the inner mold support surface 302 and the outer mold support surface 402; the end of the angle adjustment and demolding system hydraulic cylinder 702 is fixed by an angle adjustment and demolding system hydraulic cylinder end fixing structure 703; the angle adjustment and demolding system hydraulic cylinder hinge portion 704 of the angle adjustment and demolding system hydraulic cylinder 702 is hinged to the bottom hinge portion 705; The bottom hinge portion 705 is located at the bottom of the support surface. When the hydraulic shaft of the hydraulic cylinder 702 of the angle adjustment and demolding system is pulled, the tilt angle of the support surface is changed. Changing the inclination angle of the support surface can change the inclination angle of the side surface of the concrete box girder, and can also be used for the later demolding of the concrete box girder.

[0013] A further technical solution of the present invention is that the structures of the outer support leg system 801 and the inner support leg system 802 are as follows: The bottom of the outer support leg system 801 and the inner support leg system 802 are hinged to the base 1. The upper ends of the outer support leg system 801 and the inner support leg system 802 of the inner mold bracket 301 and the outer mold bracket 403 are rotatably mounted below the inner mold bracket 301 and the outer mold bracket 403 via triangular iron.

[0014] A further technical solution of the present invention is that an inner mold upper side mold 309 is arranged on the upper end surface of the inner mold system 3. The inner mold upper side mold 309 is connected to the inner mold upper side mold adjustment support system 308 and the inner mold bracket 301 through the inner mold upper side mold adjustment support system 308. The specific structure is as follows: the multi-purpose adjustment body 3081 includes an upper groove 3082 and a side groove 3083. The end of the multi-purpose adjustment body 3081 is hinged to the inner mold upper side mold hinge portion 3091. The upper side mold 309; the bottom of the vertical tensioning screw 3084 passing through the upper groove 3082 is hinged to the lower hinge part 3092 of the upper side mold of the inner side mold; the side locking screw 3085 passing through the side groove 3083 can be tightened and locked on the inner mold support 301; the angle of the upper side mold 309 can be adjusted by adjusting the relative position of the upper hinge part 3091 and the lower hinge part 3092 of the upper side mold of the inner side mold.

[0015] A further technical solution of the present invention is that a support base 707 is arranged on the base 701 of the angle adjustment and demolding system. A support screw 708 is hinged to the support base 707 through a support base hinge shaft 706. The upper end of the support screw 708 passes through and is fixed to the support by a nut. A spring 709 is sleeved on the support screw 708. The spring 709 can serve as a shock absorption system to reduce damage to the support.

[0016] A further technical solution of the present invention is that an upper side mold 401 is arranged on the upper end of the outer mold support surface 402, and the upper end of the upper side mold 401 is fixed to the outer mold support surface 402 by bolts; an upper side mold support system 404 is also arranged on the outer mold bracket 403, which is the only support structure that can support the shaft.

[0017] A further technical solution of the present invention is that a movable vibration system is arranged on the inner mold support 301 and the outer mold support 403. The movable vibration system includes a threaded rod 306 that can be driven by a forward and reverse motor. The threaded rod 306, the smooth rod 307 parallel to it, and the movable vibration table 304 together form a threaded pair. That is, when the threaded rod 306 rotates, the movable vibration table 304 can move back and forth along the threaded rod 306. A vibration motor is arranged on the movable vibration table 304. The vibration motor moves along the support and can realize segmented vibration. The movable vibration table 304 can also move along the track 305 parallel to the smooth rod for stable support. Alternatively, a vibration system is fixed on the inner mold support 301 and the outer mold support 403. The above structure is a vibration system.

[0018] A further technical solution of the present invention is that the main body of the outer support leg system 801 and the inner support leg system 802 is a telescopic hydraulic rod system; the hydraulic rod is a remotely controlled hydraulic rod; that is, by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, and in conjunction with the pulling of the angle adjustment and demolding system hydraulic cylinder 702, the angle and position of the support surface can be comprehensively adjusted, thereby achieving fine adjustment and demolding.

[0019] A further technical solution of the present invention includes a control system, which is connected to the hydraulic cylinder hinge part 704 of the angle adjustment and demolding system, the hydraulic rod system of the outer support leg system 801 and the inner support leg system 802, and the vibration system.

[0020] A further technical solution of the present invention is that the inner mold system 3 and the outer mold system 4 are arranged on the base 1, and together with the movable steel platform 2 and the end plates 5 at both ends, the overall mold structure is realized, in which the box girder reinforcement cage is placed and grouting can be performed.

[0021] A multi-purpose method for an intelligent hydraulic side formwork system for precast concrete box girders, characterized in that it utilizes the intelligent hydraulic side formwork system for precast concrete box girders as described in any of the above claims. When adjusting the mold during grouting, the angle adjustment mode is adopted: by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, and with the pulling of the hydraulic cylinder 702 of the angle adjustment and demolding system, the angle and position of the support surface can be adjusted in a comprehensive manner, thereby realizing the angle adjustment of the inner mold support surface 302 and the outer mold support surface 402. During grouting, a vibration mode is adopted: the vibration motor moves along the support to achieve segmented vibration; during the vibration process, the vibration motor moves along the grouting position; and the vibration energy is precisely delivered to the grouting position. Demolding mode: After the concrete hardens, by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, and with the pulling of the angle adjustment and demolding system hydraulic cylinder 702, the angle and position of the support surface can be comprehensively adjusted, so that the inner mold support surface 302 and the outer mold support surface 402 are separated from the concrete beam.

[0022] Option 2: The intelligent movable steel platform for precast concrete box girders is characterized by, The movable steel base 2 is a movable component. The movable component includes a main body and a front end. The front end includes a front end structure 202. Two front end track wheels 201 are mounted below the front end structure 202. The front end track wheels 201 can move along the movable track 101 on the base 1, thereby ensuring straight-line movement. The upper part of the main body is a steel base 204, and the two sides of the steel base 204 can respectively connect with the lower edges of the inner mold system 3 and the outer mold system 4; the steel base 204 is used as a bottom template. Below the steel pedestal 204 is a steel box girder 207, which serves as a supporting structure. Wheel boxes 205 are arranged on both sides of the steel box girder 207, and wheel axles and traveling wheels 206 are arranged through the steel box girder. The main body is also equipped with a walking power unit, which includes a power unit 208 fixed in the steel box girder. The power output shaft of the power unit 208 is connected to a power unit reducer 209. The power unit reducer 209 can drive the walking part drive wheel 210 to rotate, thereby driving the overall structure to move forward or backward.

[0023] A further technical solution of the present invention is that the front end structure 202 includes an end plate positioning structure 203, which can abut against the bottom of the end plate.

[0024] A further technical solution of the present invention is that an outer rotating cylinder 303 is arranged on the upper edge of the inner mold system 3 and the outer mold system 4, and an inner rotating cylinder 501 is arranged at the end of the end plate 5, wherein the inner rotating cylinder 501 can be inserted into the outer rotating cylinder 303.

[0025] A further technical solution of the present invention is that after the end plate 5 is raised appropriately, the inner rotating cylinder 501 can rotate in the outer rotating cylinder 303, so that the end plate 5 can be perpendicular to or parallel to the moving track 101; thereby realizing the rapid placement of the end plate.

[0026] A further technical solution of the present invention is that the front end and the rear end of the movable steel base 2 each include an end plate positioning structure 203.

[0027] A further technical solution of the present invention is that the steel box girder 207 is hollow, and a vibration structure is arranged therein to achieve vibration in the middle of the overall mold.

[0028] A further technical solution of the present invention is that, after the two inner mold systems 3 and the outer mold system 4 are demolded, the movable steel platform 2 can pull the formed concrete box girder forward or backward.

[0029] A method for preparing intelligent precast concrete box girders, characterized by utilizing a movable steel platform for intelligent precast concrete box girders as described in any one of the above methods, comprising the following steps: I. Preliminary Preparations and Basic Setup: Lay out base 1; install and calibrate moving track 101 on base 1; ensure the track is straight and stable; The movable steel platform 2 is hoisted onto the movable track 101; the front track wheel 201 and the traveling wheel 206 are engaged in the track; the initial positioning of the movable steel platform 2 is completed. Check the linkage status of the power unit 208, the power unit reducer 209, and the drive wheel 210 of the traveling unit; ensure that the movable steel platform 2 can move forward and backward in a straight line along the track; II. Mold Assembly and Positioning: Install the inner mold system 3 and the outer mold system 4; Place the inner mold support 301 and the outer mold support 403 on the base 1; connect the multi-purpose support leg system 8, including the outer support leg system 801 and the inner support leg system 802, to the bottom of the support leg; the bottom of the support leg is pressed against the base 1. The inner mold support surface 302 and the outer mold support surface 402 are fixed on the bracket respectively; the lower edge of the support surface is precisely aligned with the steel base 204 of the movable steel base 2. Install the upper edge mold system; An inner mold upper side mold adjustment support system 308 is installed above the inner mold bracket 301; the inner mold upper side mold 309 is connected; and it is locked and fixed with a vertical tension screw 3084 and a side locking screw 3085. An upper side mold 401 of the outer mold is installed above the outer mold support surface 402; the upper side mold support system 404 of the outer mold is used for auxiliary support and reinforcement. Install end plate 5; Lift the end plate 5; insert the inner rotating cylinder 501 on the end plate 5 into the outer rotating cylinder 303 on the upper edge of the inner mold system 3 and the outer mold system 4. Rotate the end plate 5 to a position perpendicular to the moving track 101; lower the end plate 5; use the end plate positioning structure 203 at the front end of the movable steel base 2 to press against the bottom of the end plate 5; complete the sealing of both ends; Fine-tuning of mold angle; Activate the angle adjustment and demolding system 7; extend and retract the hydraulic cylinder 702 of the angle adjustment and demolding system; coordinate with the extension and retraction of the hydraulic rod of the multi-purpose outrigger system 8; precisely adjust the tilt angle of the inner mold support surface 302 and the outer mold support surface 402; match the box girder design dimensions; III. Placement of the reinforcing cage and grouting vibration; The prefabricated box girder reinforcement cage is hoisted into the mold cavity formed by the movable steel platform 2, the inner mold system 3, the outer mold system 4, and the end plate 5; and positioned in the center. Concrete is poured into the cavity; the mobile vibrating table 304 is started simultaneously; at the same time, the vibration system in the steel box girder also begins to work; The forward and reverse motor drives the threaded rod 306 to rotate, causing the movable vibratory table 304 to reciprocate along the smooth rod 307 and the track 305. The vibratory motor vibrates in stages according to the grouting progress, precisely transmitting vibration energy to the concrete to ensure density. After grouting is completed, allow the concrete to cure until it reaches its hardened strength. IV. Demolding operation: Demolding of end plate 5; Slightly lift end plate 5; so that inner rotating cylinder 501 is disengaged from outer rotating cylinder 303; rotate end plate 5 to a state parallel to moving track 101, at which point one inner rotating cylinder 501 is placed back into outer rotating cylinder 303; lift end plate 5 away; Demolding of side mold system; Restart the angle adjustment and demolding system 7; the hydraulic cylinder 702 of the angle adjustment and demolding system retracts; at the same time, adjust the length of the hydraulic rod of the multi-purpose outrigger system 8; so that the inner mold support surface 302 and the outer mold support surface 402 retract inward synchronously; detach from the surface of the concrete box girder 6; Loosen the fixing parts of the upper side mold 309 of the inner mold and the upper side mold 401 of the outer mold; complete the overall demolding of the side mold; During operation, the angle adjustment and demolding system 7 is activated first. The side formwork support is pulled outward by the hydraulic cylinder to create a gap between the inner and outer formwork support surfaces and the side wall of the concrete box girder. Then, the multi-purpose outrigger system 8 is used to extend and retract the hydraulic rod to complete the angle fine adjustment and demolding.

[0030] V. Box girder transfer and mold repositioning; Start the power unit 208 of the movable steel platform 2; drive the formed concrete box girder 6 forward along the moving track 101 via the traveling wheels 206; move it out of the work area; Maneuver the movable steel platform 2 back to the initial position; clean the mold surface; prepare for the next round of box girder manufacturing cycle.

[0031] A further technical solution of the present invention is as follows: the mold opening system logic is as follows: after the hydraulic system is started, the extension and retraction of the hydraulic cylinder 702 of the angle adjustment and demolding system is precisely controlled by the speed regulating valve, and the mold is tightly connected with the bottom mold, i.e., the steel platform 204, to complete the mold closing; at the same time, the tightness during the pouring process is ensured; after the concrete reaches the strength, the hydraulic system reverses and drives the hydraulic cylinder 702 of the angle adjustment and demolding system to retract, and the side mold smoothly separates from the beam to realize the mold opening; Control system logic: The PLC, as the core computing unit, receives "operation panel instructions" and "real-time sensor data". After logical judgment, it sends action instructions to actuators such as hydraulic solenoid valves and motors to precisely control the extension and retraction speed and stroke of the oil cylinder, as well as the "positioning accuracy" of the side mold and the beam.

[0032] The present invention, employing the above technical solution, offers the following advantages over existing technologies: It integrates angle adjustment and demolding into a single hydraulic system, simplifying operation and preventing mold sticking and beam damage; the inner and outer molds, support legs, and side molds are all controlled by a unified PLC, ensuring synchronized movements and balanced force distribution, thus preventing mold deformation. The mold angle and position can be precisely and quantitatively adjusted, eliminating reliance on manual experience, resulting in high positioning accuracy after turnover and consistent box girder dimensions. It features a built-in mobile vibration system, precisely vibrating each segment along the alignment for uniform compaction. The movable steel platform serves as both the bottom mold and a transport mechanism, allowing direct beam movement after demolding, with the platform quickly resetting without interfering with other processes. The overall modular design adapts to multiple beam types, enabling fast installation and alignment, reducing manpower, and increasing efficiency, making it suitable for reduced-manpower operations in smart beam factories. Attached Figure Description

[0033] To further illustrate the present invention, the following description is provided in conjunction with the accompanying drawings: Figure 1 A structural diagram of the invention; Figure 2 It is the core structure of the inner mold system; Figure 3 It is the core structure of the outer mold system; Figure 4 It is the core structure of the angle adjustment and demolding system; Figure 5 A three-dimensional structural diagram of the front end of the movable steel platform of the invention; Figure 6 This is a structural diagram of the end face of the movable steel platform of the invention. Figure 7 This is an overall structural diagram of the movable steel base of the invention. Figure 8 A three-dimensional structural diagram of the front end of the movable steel platform of the invention; Figure 9 Structural diagram of the power unit at the front end of the movable steel platform of the invention; Figure 10Structural diagram of the outer mold system with end plates; Figure 11 for Figure 10 A partial structural diagram; Figure 12 The diagram shows a partial detail of the inner mold upper edge mold adjustment support system and the inner mold upper edge mold of the invention. Figure 13 Structural diagram of a multi-purpose outrigger system; Figure 14 This is a cross-sectional view of the end of the inner mold system; Figure 15 A partial perspective 3D view of the angle adjustment and demolding system; Figure 16 A three-dimensional view of the end of the inner mold system; Figure 17 This is a cross-sectional view of the end of the outer mold system; in: 1. Base; 2. Movable steel platform; 3. Inner formwork system; 4. Outer formwork system; 5. End plate; 6. Concrete box girder; 7. Angle adjustment and demolding system; 8. Multi-purpose support leg system; 9. Handrail; 201 Front-end track wheel; 202 Front-end structure; 203 End plate positioning structure; 204 Steel pedestal; 205 Wheel box; 206 Traveling wheel; 207 Steel box girder; 208 Power unit; 209 Power unit reducer; 210 Traveling unit drive wheel; 301 Inner mold support; 302 Inner mold support surface; 303 Outer rotating cylinder; 304 Mobile vibrating table; 305 Track; 306 Threaded rod; 307 Smooth rod; 308 Inner mold upper side mold adjustment support system; 309 Inner mold upper side mold; 3081 Multi-purpose adjusting body; 3082 Upper groove; 3083 Side groove; 3084 Vertical tensioning screw; 3085 Side locking screw; 3091 Upper hinged part of the inner mold upper side mold; 3092 Lower hinged part of the inner mold upper side mold. 401 Upper edge mold of outer mold; 402 Support surface of outer mold; 403 Support bracket of outer mold; 404 Support system of upper edge mold of outer mold; 501 Inner Rotating Drum; 701 Angle adjustment and demolding system base; 702 Angle adjustment and demolding system hydraulic cylinder; 703 Angle adjustment and demolding system hydraulic cylinder end fixing structure; 704 Angle adjustment and demolding system hydraulic cylinder hinge part; 705 Bottom hinge part; 706 Bracket base hinge shaft; 707 Bracket base; 708 Bracket screw; 709 Spring; 801 External support leg system; 802 Internal support leg system.

[0034] Figure 1This diagram illustrates the overall assembly structure of the complete intelligent precast concrete box girder molding system, fully showcasing the spatial layout and assembly relationship of the base 1, movable steel platform 2, inner side mold system 3, outer side mold system 4, end plate 5, concrete box girder 6, angle adjustment and demolding system 7, multi-purpose support leg system 8, railing 9, and moving track 101. This patent achieves an integrated design of side molds, platform, angle adjustment and demolding, support legs, vibration, and end plate, forming a complete equipment system capable of continuous assembly line operation.

[0035] Figure 2 Focusing on the core framework and execution components of the inner mold system 3, the relative positions and connection methods of the inner mold bracket 301, inner mold support surface 302, outer rotating cylinder 303, movable vibrating table 304, track 305, threaded rod 306, smooth rod 307, inner mold upper side mold adjustment support system 308, and inner mold upper side mold 309 are clearly shown. The inner mold system has four core functions: support, angle adjustment, vibration, and precise adjustment of the upper side mold. Its complete structure allows for independent inner molding and adjustment.

[0036] Figure 3 The main structure of the outer mold system 4 is shown, including the upper side mold 401, the outer mold support surface 402, the outer mold bracket 403, and the upper side mold support system 404. This clarifies the symmetrical cooperation between the outer and inner molds, which together enclose the box girder cavity. The outer mold system provides stable support, precise positioning, and works in conjunction with the inner mold to form a closed casting cavity, meeting the requirements for the outer forming and dimensional control of the box girder.

[0037] Figure 4 The key actuators of the angle adjustment and demolding system 7 include a base 701, a hydraulic cylinder 702, an end fixing structure 703, a hinged part 704, a bottom hinged part 705, a support base hinge shaft 706, a support base 707, a support screw 708, and a spring 709. This system is an integrated hydraulic actuator for angle adjustment and demolding, which can synchronously complete the angle fine adjustment and demolding actions through the extension and retraction of the hydraulic cylinder, and has the ability to buffer shock absorption and stable support.

[0038] Figure 5 The movable steel platform 2 is shown to have walking and positioning components at its front end, including front track wheels 201, front structure 202, end plate positioning structure 203, steel platform 204, wheel box 205, walking wheels 206, and steel box girder 207. The front end of the movable steel platform has track guidance, straight-line walking, and end plate rapid positioning functions. Its stable structure can serve as a bottom formwork and walking carrier.

[0039] Figure 6This diagram shows the end section of the movable steel platform 2, highlighting the cross-sectional shape and stress distribution of the steel platform 204, steel box girder 207, and traveling wheels 206. The platform adopts a box girder-type rigid support with a reasonable cross-sectional stress distribution, capable of withstanding concrete pouring loads and transportation traction forces, ensuring that the bottom formwork does not deform.

[0040] Figure 7 Presenting the complete form of the movable steel platform 2, it integrates the front end, main body, walking mechanism, power system, and support structure. The movable steel platform is a modular piece of equipment that integrates the bottom formwork, walking mechanism, drive system, and positioning system, and can independently complete the functions of moving, bearing load, and moving beams.

[0041] Figure 8 This supplementary view further demonstrates the assembly relationship between the front-end track wheels, end plate positioning, and traveling mechanism of the pedestal. The front-end guiding and positioning structure is stable and reliable from multiple angles, ensuring that the pedestal travels in a straight line along the track and that the end plate is accurately aligned.

[0042] Figure 9 The display platform's walking power system consists of a power unit 208, a reducer 209, a driving drive wheel 210, and driving wheels 206. The platform is driven by a motor and reducer, and features autonomous forward and backward movement, enabling automatic transport of the box girder after demolding.

[0043] Figure 10 The diagram shows the combined state of the outer mold system 4 and the end plate 5, demonstrating the plug-in connection between the outer rotating cylinder 303 and the inner rotating cylinder 501. The end plate and the side mold can be quickly plugged in, enabling rapid installation and rotation, thus improving assembly efficiency.

[0044] Figure 11 for Figure 10 The magnified view clearly shows the detailed connections between the inner rotating cylinder 501, the outer rotating cylinder 303, the end plate 5, and the side mold. The rotating cylinder insertion structure is precisely matched and rotates smoothly, allowing for rapid switching between vertical and parallel tracks on the end plate.

[0045] Figure 12 The details of the upper side mold adjustment support system 308 are shown: multi-purpose adjustment body 3081, upper groove 3082, side groove 3083, vertical tensioning screw 3084, side locking screw 3085, and upper side mold hinge structure. The upper side mold can be quantitatively adjusted in angle and locked in both directions, eliminating the need for manual experience-based adjustment and ensuring controllable precision.

[0046] Figure 13 The multi-purpose outrigger system 8 showcases a parallel dual-support layout consisting of external support leg system 801 and internal support leg system 802. The outriggers employ a double-row hydraulic telescopic structure, which, in conjunction with the angle adjustment system, enables precise fine-tuning of the support surface angle and position, ensuring balanced force distribution.

[0047] Figure 14The three end sections of the inner formwork system demonstrate the cross-sectional fit of the support surface, bracket, legs, and angle adjustment mechanism. The closed end sections of the inner formwork provide stable support, ensuring that the dimensions and alignment of the box girder ends are consistent.

[0048] Figure 15 This presentation showcases the spatial assembly of the angle adjustment and demolding system's hydraulic cylinders, supports, springs, and hinge points from a three-dimensional perspective. The angle adjustment and demolding system features a rational spatial layout, with smooth coordination between hydraulic drive and mechanical hinges, enabling stable angle adjustment and demolding.

[0049] Figure 16 The three-dimensional shape of the three ends of the inner mold system is presented, showing the overall shape of the upper side mold, adjustment support, bracket, and legs. The inner mold end structure is compact and highly modular, allowing for rapid assembly and ensuring the quality of end forming.

[0050] Figure 17 The four end sections of the outer formwork system demonstrate the cross-sectional relationship between the outer formwork support surface, bracket, upper side formwork, and support system. The end sections of the outer formwork have sufficient rigidity and are tightly sealed, ensuring no grout leakage during pouring and a regular outer profile for the box girder. Detailed Implementation

[0051] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] This patent provides multiple parallel solutions; the different descriptions represent improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0054] The choice of materials used in an invention does not limit the scope of protection.

[0055] Option 1: Intelligent hydraulic side formwork system for precast concrete box girders (Examples 1 to 10) It is important to clarify that the hydraulic side mold system is a side mold, not a bottom mold. During demolding, its separation from the concrete presents no problem. A release agent (for isolation and anti-sticking) can be applied to the mold contact surfaces. The action of the hydraulic cylinder 702 in the demolding system assists in demolding without any issues. Example 1

[0056] The embodiments described herein serve as independent basic schemes; A smart hydraulic side formwork system for precast concrete box girders is characterized in that the hydraulic side formwork system includes an inner formwork system 3 and an outer formwork system 4; both the inner formwork system 3 and the outer formwork system 4 include supports, corresponding to the inner formwork support 301 and the outer formwork support 403 respectively; the supports support the support surfaces, corresponding to the inner formwork support surface 302 of the inner formwork system 3 and the outer formwork support surface 402 of the outer formwork system 4 respectively; a multi-purpose support leg system 8 is arranged below the inner formwork support 301 and the outer formwork support 403; the multi-purpose support leg system 8 includes two rows of parallel outer support leg systems 801 and inner support leg systems 802; an angle adjustment and demolding system 7 is arranged below the inner formwork support 301 and the outer formwork support 403; the angle adjustment and demolding system 7 includes... The system includes a base 701 for adjusting and demolding the concrete box girder. A hydraulic cylinder 702 for adjusting and demolding the concrete box girder is mounted on the base 701, perpendicular to the inner mold support surface 302 and the outer mold support surface 402. The end of the hydraulic cylinder 702 is fixed by an end fixing structure 703. A hinged portion 704 of the hydraulic cylinder 702 is hinged to a bottom hinged portion 705. The bottom hinged portion 705 is located at the bottom of the support surface. When the hydraulic shaft of the hydraulic cylinder 702 is pulled, the tilt angle of the support surface is changed. Changing the tilt angle of the support surface can change the tilt angle of the side surface of the concrete box girder, and can also be used for later demolding of the concrete box girder.

[0057] Compared to the shortcomings of existing technologies, such as "low integration of mold adjustment and demolding, angle adjustment and demolding belonging to two separate systems, cumbersome operation, poor connection, easy demolding difficulties, sticking to the mold, and damage to the beam", this patent innovatively designs the angle adjustment and demolding system 7 as an integrated actuator for angle adjustment and demolding. The hydraulic cylinder 702 of the angle adjustment and demolding system extends and retracts in the forward direction to complete the angle fine adjustment before pouring, and retracts in the reverse direction to achieve demolding. The multi-purpose support leg system 8 works in sync, and one system completes the entire process of mold adjustment and demolding. The operation is simple, the connection is smooth, and sticking to the mold and damage to the beam are eliminated.

[0058] Multiple sets of parallel inner and outer support legs are arranged along the length of the formwork support to form a multi-point distributed hinged support system, rather than an isolated single-point support. The overall force is balanced and the structure is stable enough to meet the load-bearing requirements of the entire working condition of pouring, vibration and demolding. Example 2

[0059] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 1 is characterized in that the structure of the outer support leg system 801 and the inner support leg system 802 is as follows: the bottom of the outer support leg system 801 and the inner support leg system 802 are hingedly supported on the base 1, and the upper ends of the outer support leg system 801 and the inner support leg system (802) of the inner side formwork bracket 301 and the outer side formwork bracket 403 are rotatably installed below the inner side formwork bracket 301 and the outer side formwork bracket 403 by means of triangular iron.

[0060] Compared to the shortcomings of existing technologies, such as "poor synchronization and coordination of multiple templates, independent adjustment of inner and outer templates and support leg systems without unified coordinated control, resulting in uneven stress and asynchronous opening and closing, leading to template deformation and chipped corners and edges of components", this patent innovatively and non-obviously connects the outer support leg system 801, inner support leg system 802, inner template support 301, and outer template support 403 with triangular iron hinges to form a stable hinged support structure. This lays the structural foundation for subsequent synchronous linkage control of multiple components, ensures balanced stress during support and adjustment, and avoids template deformation and component damage. Example 3

[0061] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 1 is characterized in that an upper side formwork 309 is arranged on the upper surface of the inner side formwork system 3. The upper side formwork 309 is connected to the upper side formwork adjustment support system 308 and the inner side formwork bracket 301. The specific structure is as follows: the multi-purpose adjustment body 3081 includes an upper groove 3082 and a side groove 3083. The end of the multi-purpose adjustment body 3081 is connected to the upper side formwork of the inner side formwork via a hinged part. The upper side mold 309 of the inner mold is hinged to the upper side mold 309 by the hinge 3091; the bottom of the vertical tensioning screw 3084 passing through the upper groove 3082 is hinged to the lower hinge part 3092 of the upper side mold of the inner mold; the side locking screw 3085 passing through the side groove 3083 can be tightened and locked on the inner mold support 301; the angle of the upper side mold 309 of the inner mold can be adjusted by adjusting the relative position of the upper hinge part 3091 and the lower hinge part 3092 of the upper side mold of the inner mold.

[0062] Compared to the shortcomings of existing technologies, such as "high reliance on manual labor, poor adjustment accuracy, template gap, flatness, and tilt angle relying on manual adjustment based on experience, lack of standardized processes and quantitative control, and unstable adjustment quality", this patent innovatively combines the inner mold upper side mold adjustment support system 308 with hydraulic adjustment in a non-obvious way. The vertical tension screw 3084 and the side locking screw 3085 quantitatively lock and fix the template, while the multi-purpose adjustment body 3081 precisely adjusts the angle of the inner mold upper side mold 309, realizing standardized and quantitative automatic adjustment of the template angle, thus eliminating reliance on manual experience. Example 4

[0063] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 1 is characterized in that a support base 707 is arranged on the base 701 of the angle adjustment and demolding system. A support screw 708 is hinged to the support base 707 through a support base hinge shaft 706. The upper end of the support screw 708 passes through and is fixed to the support by a nut. A spring 709 is sleeved on the support screw 708. The spring 709 can serve as a shock absorption system to reduce damage to the support.

[0064] Compared to the shortcomings of existing technologies, such as "difficulty in ensuring repeatability of positioning accuracy, easy wear and deformation of side molds during turnover, lack of intelligent positioning and automatic compensation mechanisms, large deviations in line shape, verticality, and spacing after turnover, and poor consistency of box girder cross-sectional dimensions", this patent innovatively combines the support screw 708 and spring 709 to form a buffer and shock absorption structure. With the precise control of the angle adjustment and demolding system 7, the support structure is kept stable, and the line shape, verticality, and spacing are still accurate after mold turnover, ensuring the consistency of box girder cross-sectional dimensions. Example 5

[0065] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 1 is characterized in that an upper side formwork 401 is arranged on the upper end of the outer side formwork support surface 402, and the upper end of the upper side formwork 401 is fixed to the outer side formwork support surface 402 by bolts; an upper side formwork support system 404 is also arranged on the outer side formwork bracket 403, which is the only support structure that can be deeply supported by the support shaft.

[0066] Compared with the shortcomings of existing technologies, such as "high dependence on manual labor, poor adjustment accuracy, unstable fixing of the upper side mold, and lack of quantitative standards for adjustment", this patent innovatively and non-obviously adopts bolt fixing of the upper side mold 401 of the outer mold, combined with the auxiliary support of the upper side mold support system 404 of the outer mold, to achieve stable installation and precise positioning of the upper side mold 401 of the outer mold, reduce manual adjustment errors, and improve the overall flatness and dimensional accuracy of the template. Example 6

[0067] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 1 is characterized in that a mobile vibration system is arranged on the inner formwork support 301 and the outer formwork support 403. The mobile vibration system includes a threaded rod 306 that can be driven by a forward and reverse motor. The threaded rod 306, the smooth rod 307 parallel to it, and the mobile vibration table 304 together form a threaded pair. That is, when the threaded rod 306 rotates, the mobile vibration table 304 can move back and forth along the threaded rod 306. A vibration motor is arranged on the mobile vibration table 304. The vibration motor moves along the support to realize segmented vibration. The mobile vibration table 304 can also move along the track 305 parallel to the smooth rod for stable support. Alternatively, a vibration system is fixed on the inner formwork support 301 and the outer formwork support 403. The above structure is a vibration system.

[0068] Compared to the shortcomings of existing technologies, such as "coarse vibration methods and uneven compaction, traditional vibration is done at fixed points or manually, without automatic movement along the template line and precise segment-by-segment vibration, which easily leads to missed vibration and over-vibration", this patent innovatively and non-obviously combines a mobile vibrating table 304, a threaded rod 306, a smooth rod 307, and a track 305 into an automatic mobile vibrating system. The forward and reverse motor drives the threaded rod 306 to move the mobile vibrating table 304 back and forth along the template line, precisely vibrating segment by segment according to the grouting progress. The vibration energy is directionally transmitted, completely solving the problems of missed vibration and over-vibration, and ensuring the internal and external quality of the box girder. Example 7

[0069] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 2 is characterized in that the main body of the outer support leg system 801 and the inner support leg system 802 is a telescopic hydraulic rod system; the hydraulic rod is a remotely controlled hydraulic rod; that is, by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, and in conjunction with the pulling of the angle adjustment and demolding system hydraulic cylinder 702, the angle and position of the support surface can be comprehensively adjusted, thereby achieving fine adjustment and demolding.

[0070] In contrast to the shortcomings of existing technologies, such as "difficulty in ensuring repeatability of positioning accuracy, poor synchronization of multiple templates, and lack of automated coordination mechanism for support leg adjustment", this patent innovatively and non-obviously sets the outer support leg system 801 and the inner support leg system 802 as remote-controlled telescopic hydraulic rod systems, which are linked and adjusted with the hydraulic cylinder 702 of the angle adjustment and demolding system to achieve precise fine-tuning and synchronous action of the support surface angle and position, ensuring positioning accuracy and force balance of multiple components after mold turnover. Example 8

[0071] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in Embodiment 2 is characterized by further including a control system, which is connected to the hydraulic cylinder hinge part 704 of the angle adjustment and demolding system, the hydraulic rod system of the outer support leg system 801 and the inner support leg system 802, and the vibration system.

[0072] Compared with the shortcomings of existing technologies, such as "high dependence on manual operation, poor coordination among multiple templates, lack of unified intelligent control unit, and chaotic independent operation and adjustment of each system", this patent innovatively and non-obviously links the control system with the angle adjustment and demolding system 7, the multi-purpose support leg system 8, and the vibration system to achieve full-process automated control, unify and coordinate the actions of each component, get rid of dependence on manual operation, and improve adjustment accuracy and coordination. Example 9

[0073] The embodiments described herein are further possible improvements; The intelligent hydraulic side formwork system for precast concrete box girders as described in any one of Embodiments 1 to 8 is characterized in that the inner side formwork system 3 and the outer side formwork system 4 are arranged on the base 1, and together with the movable steel platform 2 and the end plates 5 at both ends, the overall mold structure is realized, in which the box girder reinforcement cage is placed and grouting can be performed.

[0074] Compared with the shortcomings of existing technologies, such as "low efficiency in template installation and alignment, and the need for traditional hydraulic side molds to be assembled segment by segment and manually calibrated multiple times, making it impossible to quickly position and accurately connect", this patent innovatively integrates the inner side mold system 3, the outer side mold system 4, the movable steel base 2, and the end plate 5 into an integrated mold structure. Based on the base 1, it can be quickly assembled and formed without segment by segment assembly and repeated manual calibration, greatly simplifying the installation and alignment process and adapting to the rhythm of prefabrication assembly line operations. Example 10

[0075] The embodiment described here is as a parallel solution; A multi-purpose method for an intelligent hydraulic side formwork system for precast concrete box girders is characterized by utilizing the intelligent hydraulic side formwork system for precast concrete box girders described in any one of embodiments one through eight. During grouting and mold adjustment, an angle adjustment mode is adopted: by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, in conjunction with the pulling of the hydraulic cylinder 702 of the angle adjustment and demolding system, the angle and position of the support surface can be comprehensively adjusted, thereby achieving angle adjustment of the inner side formwork support surface 302 and the outer side formwork support surface 402. During grouting, a vibration mode is adopted: the vibration motor moves along the support, enabling segmented vibration; during vibration, the vibration motor travels along the grouting position, precisely delivering vibration energy to the grouting position. In the demolding mode: after the concrete hardens, by adjusting the outer support leg system 801 and the inner support leg system 802 as a whole, in conjunction with the pulling of the hydraulic cylinder 702 of the angle adjustment and demolding system, the angle and position of the support surface can be comprehensively adjusted, causing the inner side formwork support surface 302 and the outer side formwork support surface 402 to detach from the concrete beam.

[0076] Compared to the shortcomings of existing technologies, such as "fragmented processes of mold adjustment, vibration, and demolding, cumbersome operation, and difficulty in quality control", this patent innovatively integrates the three major functions of angle adjustment, vibration, and demolding into a single system. It executes operations precisely in different modes: the angle adjustment mode ensures accurate mold dimensions, the vibration mode ensures concrete compaction, and the demolding mode ensures the integrity of the beam without damage. The entire process is efficiently connected and the quality is controllable.

[0077] Option 2: Intelligent movable steel platform for precast concrete box girders (Examples 11 to 19) Example 11

[0078] The embodiments described herein serve as independent basic schemes; The intelligent movable steel platform for precast concrete box girders is characterized in that the movable steel platform 2 is a movable component, comprising a main body and a front end. The front end includes a front structure 202, with two front track wheels 201 mounted below the front structure 202. The front track wheels 201 can move along the movable track 101 on the base 1, thus ensuring straight-line movement. The upper end of the main body is a steel platform 204, and the two sides of the steel platform 204 can respectively align with the lower edges of the inner mold system 3 and the outer mold system 4. The steel platform 204 is used as a bottom template. Below the steel platform 204 is a steel box girder 207, which serves as a supporting structure. Wheel boxes 205 are arranged on both sides of the steel box girder 207, with axles and wheels 206 passing through the steel box girder. The main body also has a traveling power unit, which includes a power unit 208 fixed in the steel box girder. A power unit reducer 209 is connected to the power output shaft of the power unit 208. The power unit reducer 209 can drive the driving wheel 210 of the traveling part to rotate, thereby driving the overall structure forward or backward.

[0079] Compared to the shortcomings of existing technologies, such as "poor compatibility with the platform, inability to perform continuous operation, fixed platform for side formwork, immovable platform, mutual interference between formwork installation, dismantling, curing, and beam movement, and low formwork turnover rate and site utilization", this patent innovatively designs the movable steel platform 2 as a walking bottom formwork structure. The power unit 208 drives the walking wheels 206 to move along the moving track 101. After demolding, it directly moves the formed concrete box girder 6 out of the work area. The platform can quickly return to its original position. Formwork installation, dismantling, curing, and beam movement do not interfere with each other, greatly improving the formwork turnover rate and site utilization, and realizing continuous flow operation. Example 12

[0080] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Example 11 is characterized in that the front end structure 202 includes an end plate positioning structure 203, which can abut against the bottom of the end plate.

[0081] Compared with the shortcomings of existing technologies, such as "low efficiency of template installation and alignment, and the need for repeated manual calibration of end plate positioning, which is time-consuming and labor-intensive", this patent innovatively sets an end plate positioning structure 203 in the front end structure 202 to realize automatic clamping and positioning of the bottom of the end plate, eliminating the need for manual calibration, quickly completing the end plate fixing, and improving the efficiency of mold assembly. Example 13

[0082] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Example 11 is characterized in that an outer rotating cylinder 303 is arranged along the upper edge of the inner mold system 3 and the outer mold system 4, and an inner rotating cylinder 501 is arranged at the end of the end plate 5, wherein the inner rotating cylinder 501 can be inserted into the outer rotating cylinder 303.

[0083] Compared with the shortcomings of existing technologies, such as "low efficiency in template installation and alignment, cumbersome docking of end plates and side molds, and inaccurate positioning", this patent innovatively adopts an insert-fit structure of inner rotating cylinder 501 and outer rotating cylinder 303 to achieve rapid docking of end plate 5 with inner side mold system 3 and outer side mold system 4, simplifying the end plate installation process and improving docking accuracy. Example 14

[0084] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Embodiment Thirteen is characterized in that, after the end plate 5 is raised appropriately, the inner rotating cylinder 501 can rotate in the outer rotating cylinder 303, so that the end plate 5 can be perpendicular to or parallel to the moving track 101; thereby realizing the rapid placement of the end plate.

[0085] Compared with the shortcomings of existing technologies, such as "low efficiency of template installation and alignment, and the need for overall hoisting and relocation of end plates, which is complicated and time-consuming", this patent innovatively utilizes the rotational cooperation of the inner rotating cylinder 501 and the outer rotating cylinder 303 to realize the rapid rotation and relocation of the end plate 5, which can be placed and removed without overall hoisting, thus greatly improving the efficiency of end plate assembly and disassembly. Example 15

[0086] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Embodiment Twelve is characterized in that the front end and rear end of the movable steel platform 2 each include an end plate positioning structure 203.

[0087] Compared with the shortcomings of existing technologies, such as "low efficiency of template installation and alignment, and asynchronous and inconsistent positioning of end plates at both ends of the box girder", this patent innovatively and non-obviously sets end plate positioning structures 203 at both the front and rear ends of the movable steel platform 2, so as to achieve synchronous and accurate positioning of the end plates at both ends, ensure the consistency of sealing at both ends of the mold, and improve the overall assembly efficiency. Example 16

[0088] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Example 11 is characterized in that the steel box girder 207 is hollow, and a vibration structure is arranged therein to achieve vibration in the middle of the overall mold.

[0089] Compared with the shortcomings of existing technologies, such as "coarse vibration method, uneven density, and failure to take into account the internal density of the box girder when only the outer side is vibrated", this patent innovatively adds a vibration structure inside the steel box girder 207 in a non-obvious way. It works with the side mold moving vibration system to achieve synchronous vibration inside and outside. The vibration energy fully covers the mold cavity, completely solving the problems of missed vibration and uneven density. Example 17

[0090] The embodiments described herein are further possible improvements; The intelligent movable steel platform for precast concrete box girders as described in Example 11 is characterized in that, after the two inner mold systems 3 and the outer mold system 4 are demolded, the movable steel platform 2 can pull the formed concrete box girder forward or backward.

[0091] Compared with the shortcomings of existing technologies, such as "poor compatibility with the platform, inability to operate in a continuous production line, and the need for separate hoisting equipment for beam movement, which is cumbersome and inefficient", this patent innovatively and non-obviously allows the movable steel platform 2 to have both bottom mold and transportation functions. After demolding, the box girder can be directly pulled to move without additional hoisting equipment, simplifying the beam movement process and adapting to continuous production lines. Example 18

[0092] The embodiment described here is as a parallel solution; The intelligent fabrication method for precast concrete box girders is characterized by utilizing the intelligent movable steel platform for precast concrete box girders described in any one of Examples 11 to 17, comprising the following steps: 1. Preliminary preparation and foundation placement: laying the base 1; installing and calibrating the movable track 101 on the base 1; ensuring the track is straight and stable; hoisting the movable steel platform 2 onto the movable track 101; engaging the front track wheel 201 and the traveling wheel 206 into the track; completing the preliminary positioning of the movable steel platform 2; checking the power unit 208 and the power supply unit. Partial reducer 209 and travel drive wheel 210 are in linkage state; ensure that the movable steel platform 2 can move forward and backward in a straight line along the track; II. Mold assembly and positioning: install the inner mold system 3 and the outer mold system 4; place the inner mold bracket 301 and the outer mold bracket 403 on the base 1; connect the multi-purpose support leg system 8 (including the outer support leg system 801 and the inner support leg system 802) to the bottom of the bracket; the bottom of the support leg is pressed against the base 1; fix the inner mold support surface 302 and the outer mold support surface 402 on the bracket respectively; the lower edge of the support surface and the movable The steel base 204 of the moving steel platform 2 is precisely aligned; the upper side mold system is installed; the inner side mold upper side mold adjustment support system 308 is installed above the inner side mold bracket 301; the inner side mold upper side mold 309 is connected; it is locked and fixed with vertical tension screws 3084 and side locking screws 3085; the outer side mold upper side mold 401 is installed above the outer side mold support surface 402; it is reinforced with auxiliary support using the outer side mold upper side mold support system 404; the end plate 5 is installed; the end plate 5 is lifted; the inner rotating cylinder 501 on the end plate 5 is inserted into the inner side mold system 3 and the outer side mold system 409. In the outer rotating cylinder 303 on the upper edge of the 4th ring; rotate the end plate 5 to a state perpendicular to the moving track 101; lower the end plate 5; use the end plate positioning structure 203 at the front end of the movable steel platform 2 to press against the bottom of the end plate 5; complete the sealing of both ends; fine-tune the mold angle; start the angle adjustment and demolding system 7; extend and retract the hydraulic cylinder 702 of the angle adjustment and demolding system; coordinate with the extension and retraction of the hydraulic rod of the multi-purpose support leg system 8; precisely adjust the tilt angle of the inner mold support surface 302 and the outer mold support surface 402; match the design dimensions of the box girder; III. Reinforcing cage placement and grouting vibration;The precast box girder reinforcement cage is hoisted into the mold cavity formed by the movable steel platform 2, the inner mold system 3, the outer mold system 4, and the end plate 5; it is centered and positioned; concrete is poured into the cavity; the movable vibrating table 304 is started simultaneously; at the same time, the vibration system in the steel box girder also starts working; the forward and reverse motor drives the threaded rod 306 to rotate; causing the movable vibrating table 304 to move back and forth along the smooth rod 307 and the track 305; the vibrating motor vibrates segment by segment according to the grouting progress; the vibration energy is accurately transferred to the concrete; to ensure the compaction; after grouting is completed; static curing is carried out until the concrete reaches the hardened strength. IV. Demolding operation: Demolding the end plate 5; slightly lift the end plate 5; so that the inner rotating cylinder 501 is separated from the outer rotating cylinder 303; rotate the end plate 5 to a state parallel to the moving track 101. The inner rotating cylinder 501 is placed back into the outer rotating cylinder 303; the end plate 5 is lifted off the ground; the side mold system is demolded; the angle adjustment and demolding system 7 is restarted; the hydraulic cylinder 702 of the angle adjustment and demolding system retracts; at the same time, the length of the hydraulic rod of the multi-purpose support leg system 8 is adjusted; so that the inner side mold support surface 302 and the outer side mold support surface 402 retract inward synchronously; detach from the surface of the concrete box girder 6; loosen the fixing parts of the upper side mold 309 of the inner side mold and the upper side mold 401 of the outer side mold; complete the overall demolding of the side mold; V. Box girder transfer and mold reset; start the power part 208 of the movable steel platform 2; drive the formed concrete box girder 6 forward along the moving track 101 through the traveling wheels 206; move out of the work area; operate the movable steel platform 2 to return to the initial position; clean the mold surface; prepare for the next round of box girder manufacturing cycle.

[0093] It can be inserted into the outer rotating cylinder 303 to form a rotating pair. When the rotating pair is formed, only one end of the end plate is inserted, and the other end is not inserted. The rotating pair is formed when the whole is raised and only one end is inserted.

[0094] Compared with the shortcomings of existing technologies, such as "fragmented prefabrication process, mutual interference between processes, low production efficiency and unstable quality", this patent innovatively integrates the base laying, mold assembly, grouting and vibration, demolding, and relocation into a standardized assembly line process. Relying on the movable steel platform 2 and intelligent side mold system, it achieves seamless connection of each process, precise and controllable throughout the process, and greatly improves production efficiency and the stability of box girder finished product quality. Example 19

[0095] The embodiments described herein are further possible improvements; The intelligent preparation method for precast concrete box girders as described in Example 18 is characterized by the following: The mold-opening system logic is as follows: After the hydraulic system is started, the extension and retraction of the hydraulic cylinder 702 of the angle adjustment and demolding system is precisely controlled by the speed regulating valve, and the mold is tightly connected to the bottom mold, i.e., the steel platform 204, to complete the mold closing; at the same time, the tightness during the pouring process is ensured; after the concrete reaches its strength, the hydraulic system reverses and drives the hydraulic cylinder 702 of the angle adjustment and demolding system to retract, and the side mold smoothly separates from the beam body to achieve mold opening; The control system logic is as follows: The PLC, as the core computing unit, receives "operation panel instructions" and "real-time sensor data," and after logical judgment, sends action instructions to the hydraulic solenoid valves, motors, and other actuators to precisely control the extension and retraction speed and stroke of the cylinders, as well as the "positioning accuracy" of the side mold and the beam body.

[0096] Compared to the shortcomings of existing technologies, such as "difficulty in ensuring repeatability of positioning accuracy, high dependence on manual labor, lack of precise control logic for mold opening and closing, and large dimensional deviations", this patent innovatively and non-obviously adopts a PLC core control combined with a hydraulic speed regulating valve for precise regulation, forming a "command-sensor-execution" closed-loop control logic. This precisely controls the action of the hydraulic cylinder 702 in the angle adjustment and demolding system and the positioning accuracy of the side mold, achieving tight mold closing and smooth mold opening, and ensuring the precise and uniform dimensions of the box girder.

[0097] In addition to all the embodiments described above, the following optional designs are also possible: Possible improvements to the hydraulic side mold system: Optimization of the side steel formwork body structure: The side formwork adopts a high-rigidity monolithic panel + steel rib combination structure, which is suitable for continuous beams / simply supported beams; the upper part of the side formwork is equipped with an adjustable slope structure, which can realize the adjustment of different slopes of the beam; the side formwork and the bottom formwork are connected by positioning pins + quick clamps to ensure tight joints; the panel is made of 5mm thick integral bending process, the steel ribs are processed by bending plates, and the steel support is made of 100×100×5mm square steel + 100×50×5mm angle steel, which takes into account both structural strength and lightweight.

[0098] Improved accuracy of side mold switching system: The side formwork opening and closing system is driven by a hydraulic cylinder and a high-precision proportional valve, enabling adjustable opening and closing speeds. The system is grouped along the beam length at 75-meter intervals to ensure stable operation. The side formwork has reserved grooves for installing steel reinforcement protective layer pads and holes for fixing embedded parts, improving the convenience of construction operations.

[0099] Vibration system performance upgrade: The vibration system uses a high-frequency vibratory motor specifically designed for concrete, with a vibration frequency of 2800-3000 times / minute and an excitation force of 5-12kN. The motors are rigidly installed on the outer ribs of the side formwork using bolts. The motors are evenly distributed along the beam length of 10-15 meters, with denser distribution at key locations such as the beam ends and chamfers. The system is equipped with independent vibration damping devices to reduce vibration damage to the steel formwork and platform. It also features an intelligent control module that supports independent control of single or multiple motors, synchronous linkage, and overload protection.

[0100] The intelligent control system is well-developed. The control system is based on a PLC and touch screen, enabling one-button automated operation. It has built-in preset construction modes for multiple beam types such as T-beams and box girders, and supports customization of parameters such as opening and closing speed, clamping force, and holding time. Through sensors in hydraulic pipelines and key parts of the side formwork, it monitors and dynamically displays data such as pressure, displacement, and temperature in real time. Abnormal situations automatically trigger audible and visual alarms and shutdown protection. It has reserved a data communication interface, which can interact with the project management platform to achieve remote monitoring and quality traceability.

[0101] Supplement to construction control logic: The mold opening system uses a speed control valve to precisely control the extension and retraction of the hydraulic cylinder. The side mold moves along a preset track and is tightly closed with the bottom mold by positioning pins and quick clamps. After the concrete reaches its strength, the hydraulic system reverses and drives the hydraulic cylinder to retract, and the side mold smoothly separates from the beam and opens. The PLC receives operation commands and sensor data to precisely control the extension and retraction speed, stroke, and positioning accuracy of the hydraulic cylinder.

[0102] Possible improvements to the movable steel pedestal system: Modular optimization of pedestal structure: The movable steel platform consists of a steel platform panel, a frame structure, a walking mechanism, a drive system, and a positioning sensor and control system. The platform panel is made of 8mm thick Q235B steel plate, combined with 10# I-beams and 5# channel steel to form a steel frame, ensuring flatness and rigidity. The frame structure is composed of an 11-meter end frame and a 10-meter middle frame. The main beam is made of 40#B I-beams and the crossbeams are made of 20# I-beams, and the total length can be flexibly adjusted according to the beam length.

[0103] Upgrade of walking and drive systems: The traveling mechanism is equipped with φ300mm drive wheels, guide wheels and driven wheel sets, wheel axle diameter φ70mm, single wheel maximum load capacity 10t, and runs along a dedicated track; the drive system integrates a variable frequency motor and reducer, with a total traction power of 6×2.2kW, realizing multi-stage speed adjustment of beam transport speed of 2-3m / min and return no-load speed of 5-6m / min.

[0104] Enhanced intelligent positioning and security design: The positioning sensing and control system is equipped with displacement and anti-collision sensors, combined with vehicle-mounted PLC, wireless remote control and data acquisition module, and can be connected to the smart beam plant management platform in real time; the wheel set adopts double tapered roller bearings and is equipped with an automatic locking device to meet the requirements of heavy-load working conditions such as tension reaction force and maintenance load.

[0105] Working principle and innovations of the base: The traveling mechanism provides power for track movement, and the drive system controls the speed via frequency conversion; the base panel serves as the bottom mold to ensure forming accuracy, and the frame can be flexibly spliced ​​to adapt to different beam lengths; the positioning system uses sensors for real-time positioning and anti-collision protection, and combined with PLC and wireless remote control, it achieves remote linkage with the smart beam factory platform to complete precise alignment of processes such as pouring, steam curing, and tensioning.

[0106] Discussion of solutions: Scene adaptation and expansion; Both the hydraulic side formwork and the movable steel platform adopt a combined and modular structure, which can be flexibly adapted to various beam types such as continuous beams, simply supported beams, T-beams, and box girders, to meet the construction needs of beams with varying slopes and different beam lengths, and improve the versatility of the production line.

[0107] Cost reduction and efficiency improvement and intelligent upgrading: Modular design reduces equipment replacement and adaptation costs; multi-speed adjustment, wireless remote control, and one-click automated operation reduce manual intervention and operation time; the equipment can be reused, improving the turnover rate of templates and pedestals and reducing construction costs; the whole process is intelligently integrated, adapting to the trend of less-manned and unmanned production in smart beam factories, and realizing digital and precise management and control of construction.

[0108] Quality and reliability assurance: High-precision positioning, vibration reduction protection, overload protection, and abnormal shutdown design reduce equipment wear and extend service life; precise alignment control, high-frequency vibration, and tight joint design ensure the compactness, surface smoothness, and dimensional consistency of the concrete box girder, thus improving construction quality.

[0109] I. Addressing the shortcomings of low template installation and alignment efficiency: Compared to the shortcomings of existing technologies, such as low efficiency in template installation and alignment, traditional hydraulic side molds require segmented assembly and multiple manual calibrations, resulting in a lengthy and complex installation process that hinders rapid positioning and precise alignment. This patent innovatively integrates a movable steel base 2, inner side mold system 3, outer side mold system 4, and end plate 5 into a single mold structure. Using the moving track 101 as a reference, it achieves rapid overall positioning. The front track wheel 201 and the traveling wheel 206 move in a straight line along the track. The end plate positioning structure 203 automatically abuts against the bottom of the end plate 5. The inner rotating cylinder 501 and the outer rotating cylinder 303 interlock to achieve rapid rotation and positioning of the end plate 5. This eliminates the need for segmented assembly and repeated manual calibrations, significantly simplifying the installation and alignment process and adapting to the rhythm of prefabrication assembly line operations.

[0110] II. Addressing the deficiency of difficulty in guaranteeing repeatability accuracy: Compared to existing technologies, which suffer from drawbacks such as difficulty in ensuring accurate repetitive positioning, easy wear and deformation of side molds during turnover, lack of intelligent positioning and automatic compensation mechanisms, large deviations in alignment, verticality, and spacing after turnover, and poor consistency of box girder cross-sectional dimensions, this patent innovatively and non-obviously links the angle adjustment and demolding system 7, the multi-purpose support leg system 8, and the PLC control system. The hydraulic cylinder 702 of the angle adjustment and demolding system precisely controls the extension and retraction stroke, and the hydraulic rods of the outer support leg system 801 and the inner support leg system 802 synchronously extend and retract to compensate. With the support screw 708 and spring 709 for buffering and shock absorption, the support structure is kept stable. Even after the mold is turnovered, the alignment, verticality, and spacing can still be kept accurate through hydraulic and sensor closed-loop control, ensuring the consistency of box girder cross-sectional dimensions.

[0111] Third, addressing the shortcomings of high reliance on manual intervention and poor adjustment precision: Compared to the shortcomings of existing technologies, such as high reliance on manual labor and poor adjustment precision, where template gaps, flatness, and tilt angles depend on manual adjustment based on experience without standardized processes and quantitative control, resulting in unstable adjustment quality, this patent innovatively combines the inner mold upper side mold adjustment support system 308 and the outer mold upper side mold support system 404 with hydraulic adjustment. The vertical tension screw 3084 and the side locking screw 3085 provide quantitative locking and fixation, while the multi-purpose adjustment body 3081 precisely adjusts the angle of the inner mold upper side mold 309. The PLC control system receives sensor data and precisely controls the cylinder action through the speed control valve, achieving standardized and quantitative automatic adjustment of template gaps, flatness, and tilt angles, thus eliminating reliance on manual experience.

[0112] IV. Addressing the shortcomings of poor synchronization and coordination among multiple templates: Compared to the shortcomings of existing technologies, such as poor synchronization and coordination of multiple templates, independent adjustment of the inner and outer templates, upper side templates, and support leg systems without unified coordinated control, this patent innovatively integrates the inner template system 3, outer template system 4, corner adjustment and demolding system 7, and multi-purpose support leg system 8 into a unified PLC control logic. The hydraulic cylinder 702 of the corner adjustment and demolding system is synchronously linked with the hydraulic rods of the outer support leg system 801 and the inner support leg system 802. The upper side template 309 of the inner template and the upper side template 401 of the outer template open and close in coordination, realizing synchronous action and balanced force of multiple templates, and avoiding deformation and component damage.

[0113] V. Addressing the deficiency of low integration between mold adjustment and demolding: Compared to the shortcomings of existing technologies, such as low integration of mold adjustment and demolding, with angle adjustment and demolding belonging to two separate systems, resulting in cumbersome operation, poor connection, difficulty in demolding, sticking to the mold, and damage to the beam, this patent innovatively and non-obviously designs the angle adjustment and demolding system 7 as an integrated actuator for angle adjustment and demolding. The hydraulic cylinder 702 of the angle adjustment and demolding system extends and retracts in the forward direction to complete the fine adjustment of the angle before pouring, and retracts in the reverse direction to achieve demolding. The multi-purpose support leg system 8 works in sync, and one system completes the entire process of mold adjustment and demolding. The operation is simple, the connection is smooth, and sticking to the mold and damage to the beam are eliminated.

[0114] VI. Addressing the shortcomings of the vibration method, such as its rough application and uneven compaction: Compared to the shortcomings of existing technologies, such as coarse vibration methods and uneven compaction, traditional vibration is done at fixed points or manually by hand, without automatic movement along the template line or precise segment-by-segment vibration, which is prone to missed vibration and over-vibration. This patent innovatively and non-obviously combines a mobile vibrating table 304, a threaded rod 306, a smooth rod 307, and a track 305 into an automatic mobile vibration system. The forward and reverse motor drives the threaded rod 306 to move the mobile vibrating table 304 back and forth along the template line, precisely vibrating segment by segment as the grouting progresses. The vibration energy is directionally transmitted, completely solving the problems of missed vibration and over-vibration, and ensuring the internal and external quality of the box girder.

[0115] VII. Regarding the shortcomings of poor compatibility with the pedestal and inability to perform assembly line operations: Compared to the shortcomings of existing technologies, such as poor compatibility with the support platform, inability to perform continuous operation, and fixed support platforms for side formwork that cannot be moved, resulting in mutual interference between formwork installation, dismantling, curing, and beam movement, and low formwork turnover and site utilization, this patent innovatively and non-obviously designs a movable steel support platform 2 as a walking bottom formwork structure. The power unit 208 drives the walking wheels 206 to move along the moving track 101. After demolding, it directly moves the formed concrete box girder 6 out of the work area. The support platform can quickly return to its original position, and formwork installation, dismantling, curing, and beam movement do not interfere with each other, greatly improving the formwork turnover and site utilization, and realizing continuous flow operation.

[0116] Table 1. Core Control System Selection Table (PLC + HMI + Network) part model factory use PLC main controller S7-1214C DC / DC / DC Siemens The entire process of angle adjustment / demolding / movement / vibration is controlled by logic, sensor data acquisition, and hydraulic valve linkage. touchscreen KTP700 Basic DP Siemens Parameter setting, mode switching, status display, fault alarm Variable frequency drive G120C 2.2kW Siemens Speed ​​control of walking motor and vibrating motor Industrial switches SCALANCE XB008 Siemens Device networking, data exchange, and remote access wireless module S7-1200 4G / Wireless Extension Siemens / Compatible Remote monitoring, wireless remote control, and data upload to the smart beam factory platform Solenoid directional valve 4WE6E62 / EG24N9K4 Bosch Rexroth Angle adjustment / demolding hydraulic cylinder telescopic control Proportional speed control valve 2FRE6B-20B / 8Q Bosch Rexroth Precise speed control of the hydraulic cylinder ensures smooth opening and closing. Hydraulic pump station EVP-80-31.5MPa Hefei Changyuan Hydraulics The system supplies oil at a pressure of 31.5 MPa and is compatible with multi-cylinder synchronization. .

[0117] Table 2 Selection Table for Angle Adjustment and Demolding Systems part model factory use Adjusting angle demolding hydraulic cylinder ROB80 / 45-300 Jiangsu Hengli Hydraulics Support surface angle adjustment, demolding drive, stroke 300mm bracket screw M30×400 Tempered Zhejiang High Strength Fasteners Support bracket, height fine adjustment Buffer spring 60Si2Mn outer diameter 60 Anhui Spring Factory Vibration damping and support protection Hinge shaft / pin 40Cr tempered and blackened Shandong Pin Shaft Factory The hydraulic cylinder is hinged to the support surface, and the bracket base is hinged. .

[0118] Table 3 Selection Table for Multipurpose Outrigger Systems part model factory use External support leg hydraulic rod ROB63 / 35-250 Jiangsu Hengli Hydraulics External mold support, height / angle fine adjustment Inner support leg hydraulic rod ROB50 / 28-200 Jiangsu Hengli Hydraulics Inner mold support, synchronous expansion and contraction Triangle iron hinge seat 100×100×10 welded parts Self-made / matching steel structure The outriggers are hinged to the support frame to ensure stable stress distribution. Hydraulic lock DFY-F15L1 Hefei Changyuan Hydraulics Outriggers maintain pressure to prevent settlement. .

[0119] Table 4 Selection Table for Inner Mold Upper Side Mold Adjustment System part model factory use Vertical tension screw M24×300 88 level Zhejiang High Strength Fasteners Upper edge mold angle tightening and fixing Side locking screw M20×200 Class 88 Zhejiang High Strength Fasteners Side mold and bracket locking Hinged Ear Plate 16mm steel plate welding Self-made / matching steel structure The upper edge mold is hinged to achieve angle adjustment. .

[0120] Table 5 Selection Table for Mobile Vibration Systems part model factory use High-frequency vibratory motor GZF150 Anyang Vibrator Attached vibratory compaction, frequency 2800–3000 times / min, excitation force 10kN Transmission threaded rod Tr32×6 Precision Trapezoidal Zhejiang Transmission Machinery Drive the vibratory table to move back and forth. Guide light rod φ30h6 chrome plated Zhejiang Transmission Machinery Guide the vibratory compactor to ensure stability. Forward and reverse geared motor 15kW, speed ratio 1:30 Zhejiang Oubang Motor Drive the threaded rod to rotate Mobile vibratory table Customized accessories Homemade / Matching Equipped with a vibratory motor, it moves along the support line. .

[0121] Table 6 Selection Table for Movable Steel Base Walking System part model factory use Walking drive motor YE2-100L1-4 2.2kW Wannan Electric Platform walking power travel reducer JCT17 Jiang Chi Tian Cheng Wheel-side drive, high torque, with brakes Walking wheel set φ300 single wheel with a load capacity of 10t Xinxiang Aote Neng The main body of the platform moves along the track. Front track wheel φ200 guide wheel Xinxiang Aote Neng Front-end guidance ensures straight-line movement. Moving track 10# channel steel / P24 steel rail Anshan Iron and Steel The platform's travel reference ensures flatness. End plate positioning structure Custom clamping block self made Press firmly against the bottom of the end plate for quick positioning .

[0122] Table 7 Selection Table for Endplate Rapid Positioning System part model factory use outer rotating cylinder φ89×4 seamless steel pipe Shandong Steel Pipe Factory Upper end connector of side mold Inner rotating cylinder φ76×3 seamless steel pipe Shandong Steel Pipe Factory End plate connector, rotatable Positioning pin φ25 40Cr Shandong Pin Shaft Factory End plate rotation limit .

[0123] Table 8 Selection Table for Sensors and Detection Components part model factory use Displacement sensor KTC-300mm Milon Technology Hydraulic cylinder stroke detection, template positioning pressure sensor MIK-P300 0–31.5MPa Mico Sensing Hydraulic system pressure monitoring Anti-collision sensor E3Z-D61 OMRON Platform walking anti-collision protection proximity switch NPN normally open OMRON Travel limit switch, vibrating table limit switch .

[0124] Table 9 Selection Table for Steel Structure and Panel part Specification Material factory use Base / support main beam 40#B I-beam Q355B Anshan Iron and Steel Main load-bearing structure Side mold panel 6mm integral bending Q235B Sichuan Zhonglida Steel Mold Inner mold / outer mold forming surface steel base panel 8mm steel plate Q235B Sichuan Zhonglida Steel Mold Bottom mold, ensuring flatness Steel box girder frame 10# I-beam + 5# channel steel Q235B Homemade / Matching pedestal main support Track pressure plate / pad Standard parts Q235B Railway parts factory Track fixed .

[0125] Table 10 Network and Intelligent Supporting Equipment Selection Table equipment model factory use Industrial wireless router 4G industrial grade Huawei Remote control, data upload Data acquisition module ADAM-4017 Advantech Sensor signal acquisition and conversion to RS485 Host computer software Custom configuration Siemens Production monitoring, data storage, reports .

[0126] Selection Guide Hydraulic system: Hengli / Changyuan is the mainstream supplier for precast beam yards in China, with a pressure of 31.5MPa to meet the requirements of heavy load and synchronization.

[0127] Walking drive: Tiancheng JCT17 reducer and Aote Neng wheel set are suitable for transporting 50-100t box girders, with an adjustable speed of 2-6m / min.

[0128] Vibration: The Anyang GZF150 high-frequency motor is matched with the patented "segment-by-segment precise vibration", ensuring no missed or over-vibration.

[0129] Control: Siemens PLC + proportional valve achieves millimeter-level positioning, meeting the requirements of patented intelligent closed-loop control.

[0130] Steel structure: The panel thickness and steel profile specifications fully match the patented strength and precision requirements.

[0131] All components: are either in stock or custom-made, and can be directly purchased and assembled without any non-standard bottlenecks.

[0132] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. An intelligent hydraulic side formwork system for precast concrete box girders, characterized in that, The hydraulic side mold system includes an inner side mold system (3) and an outer side mold system (4). Both the inner mold system (3) and the outer mold system (4) include brackets, corresponding to the inner mold bracket (301) and the outer mold bracket (403) respectively. The bracket supports the support surface, which corresponds to the inner mold support surface (302) of the inner mold system (3) and the outer mold support surface (402) of the outer mold system (4). A multi-purpose outrigger system (8) is arranged below both the inner mold support (301) and the outer mold support (403); the multi-purpose outrigger system (8) includes two rows of parallel outer support leg systems (801) and inner support leg systems (802). An angle adjustment and demolding system (7) is arranged below both the inner mold support (301) and the outer mold support (403); The angle adjustment and demolding system (7) includes an angle adjustment and demolding system base (701), on which an angle adjustment and demolding system hydraulic cylinder (702) is arranged perpendicular to the inner mold support surface (302) and the outer mold support surface (402); the end of the angle adjustment and demolding system hydraulic cylinder (702) is fixed by an angle adjustment and demolding system hydraulic cylinder end fixing structure (703); the angle adjustment and demolding system hydraulic cylinder hinge portion (704) of the angle adjustment and demolding system hydraulic cylinder (702) is hinged to the bottom hinge portion (705); The bottom hinge part (705) is located at the bottom of the support surface. When the hydraulic shaft of the hydraulic cylinder (702) of the angle adjustment and demolding system is pulled, the tilt angle of the support surface is changed. Changing the inclination angle of the support surface can change the inclination angle of the side surface of the concrete box girder, and can also be used for the later demolding of the concrete box girder.

2. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 1, characterized in that, The structures of the outer support leg system (801) and the inner support leg system (802) are as follows: The bottom of the outer support leg system (801) and the inner support leg system (802) are hinged to the base (1). The upper ends of the outer support leg system (801) and the inner support leg system (802) of the inner mold bracket (301) and the outer mold bracket (403) are rotatably mounted below the inner mold bracket (301) and the outer mold bracket (403) by means of triangular iron.

3. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 1, characterized in that, The upper end face of the inner mold system (3) is provided with an inner mold upper side mold (309). The inner mold upper side mold (309) is connected to the inner mold upper side mold adjustment support system (308) and the inner mold bracket (301) through the inner mold upper side mold adjustment support system (308). The specific structure is as follows: The multi-purpose adjustment body (3081) includes an upper groove (3082) and a side groove (3083). The end of the multi-purpose adjustment body (3081) is hinged to the inner mold upper side mold through the hinge part (3091) on the inner mold upper side mold. 309); The bottom of the vertical tensioning screw (3084) passing through the upper groove (3082) is hinged to the lower hinge part (3092) of the upper side mold of the inner mold; The side locking screw (3085) passing through the side groove (3083) can be tightened and locked on the inner mold support (301); The angle of the upper side mold (309) of the inner mold can be adjusted by adjusting the relative position of the upper hinge part (3091) of the upper side mold of the inner mold and the lower hinge part (3092) of the upper side mold of the inner mold.

4. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 1, characterized in that, An adjustment and demolding system base (701) is provided with a support base (707). A support screw (708) is hinged to the support base (707) through a support base hinge shaft (706). The upper end of the support screw (708) passes through and is fixed to the support by a nut. A spring (709) is sleeved on the support screw (708). The spring (709) can act as a shock absorption system to reduce damage to the support.

5. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 1, characterized in that, An upper side mold (401) is arranged on the upper end of the outer mold support surface (402), and the upper end of the upper side mold (401) is fixed to the outer mold support surface (402) by bolts; an upper side mold support system (404) is also arranged on the outer mold bracket (403), which is the only support structure that can support the shaft.

6. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 1, characterized in that, A movable vibration system is arranged on the inner mold support (301) and the outer mold support (403). The movable vibration system includes a threaded rod (306) that can be driven by a forward and reverse motor. The threaded rod (306), the smooth rod (307) parallel to it, and the movable vibration table (304) together form a threaded pair. That is, when the threaded rod (306) rotates, the movable vibration table (304) can move back and forth along the threaded rod (306). A vibration motor is arranged on the movable vibration table (304). The vibration motor moves along the support and can realize segmented vibration. The movable vibration table (304) can also move along the track (305) parallel to the smooth rod for stable support. Alternatively, a vibration system is fixed on the inner mold support (301) and the outer mold support (403). The above structure is a vibration system.

7. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 2, characterized in that, The main body of the outer support leg system (801) and the inner support leg system (802) is a telescopic hydraulic rod system; the hydraulic rod is a remotely controlled hydraulic rod; that is, by adjusting the outer support leg system (801) and the inner support leg system (802) as a whole, and in conjunction with the pulling of the hydraulic cylinder (702) of the angle adjustment and demolding system, the angle and position of the support surface can be comprehensively adjusted, thereby achieving fine adjustment and demolding.

8. The intelligent hydraulic side formwork system for precast concrete box girders as described in claim 2, characterized in that, It also includes a control system that can connect to the hydraulic cylinder articulation part (704) of the angle adjustment and demolding system, the hydraulic rod system of the outer support leg system (801) and the inner support leg system (802), and the vibration system.

9. The intelligent hydraulic side formwork system for precast concrete box girders as described in any one of claims 1-8, characterized in that, The inner mold system (3) and the outer mold system (4) are arranged on the base (1), and together with the movable steel platform (2) and the end plates (5) at both ends, the overall mold structure is realized. The box girder reinforcement cage is placed in it and grouting can be carried out.

10. A multi-purpose method for an intelligent hydraulic side formwork system for precast concrete box girders, characterized in that, The intelligent hydraulic side formwork system for precast concrete box girders as described in any one of claims 1-8; When adjusting the grouting mold, the angle adjustment mode is adopted: by adjusting the outer support leg system (801) and the inner support leg system (802) as a whole, and with the pulling of the hydraulic cylinder (702) of the angle adjustment and demolding system, the angle and position of the support surface can be adjusted in a comprehensive manner, thereby realizing the angle adjustment of the inner mold support surface (302) and the outer mold support surface (402); During grouting, a vibration mode is adopted: the vibration motor moves along the support to achieve segmented vibration; during the vibration process, the vibration motor moves along the grouting position; and the vibration energy is precisely delivered to the grouting position. Demolding mode: After the concrete hardens, the angle adjustment and demolding system (7) is activated; the hydraulic cylinder (702) of the angle adjustment and demolding system retracts; at the same time, the length of the hydraulic rod of the multi-purpose support leg system (8) is adjusted; so that the inner support surface (302) and the outer support surface (402) retract inward synchronously; detach from the surface of the concrete box girder (6); by adjusting the outer support leg system (801) and the inner support leg system (802) as a whole, and in conjunction with the pulling of the hydraulic cylinder (702) of the angle adjustment and demolding system, the angle and position of the support surface can be comprehensively adjusted, so that the inner support surface (302) and the outer support surface (402) detach from the concrete beam.

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