A self-regulating inner mold system for prefabricated box beams

Abstract

The invention discloses a self-regulating inner mold system for a prefabricated box girder, and relates to the technical field of prefabricated box girders, comprising a sliding seat cross beam; a displacement trolley is arranged for displacement on the top of the sliding seat cross beam; the interior of the displacement trolley is fixedly connected to the transverse cylinder of a double-axis adjustment cylinder assembly, and a combined top plate is arranged to assemble the side top plate and the side of the side bottom plate, and the cross plate is assembled as a whole and assembled in sections to avoid the difficulty of the existing adjustment template to adapt to different widths during the pouring process, and the segmented installation is utilized to solve the problem that the middle side concrete below the bottom membrane is difficult to vibrate and exhaust, and the phenomenon of concrete inflow and solidification is reduced with the cooperation of the side connectors, which leads to the failure of the adjustment joint of the template, and the sliding seat cross beam and the displacement trolley are arranged for centering support, so that the load of the side top plate is completely transmitted to the sliding seat cross beam by the double-axis adjustment cylinder assembly, and the disturbance of the concrete below the bottom membrane is reduced during the pouring process, and the formation of cracks during the concrete pouring process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated box girders, in particular to a self-regulating inner mould system for prefabricated box girders. Background Art

[0002] A box girder is a type of beam used in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, similar to a box, hence the name. It is divided into single-box and multiple-box types. Box girders with reinforced concrete structures are divided into prefabricated box girders and cast-in-place box girders. Box girders prefabricated in an independent site can be erected in conjunction with a bridge-erecting machine after the lower project is completed, which can speed up the project progress and save construction time.

[0003] Most of the existing inner formwork systems have fixed structures and it is difficult to reprocess the unvibrated area under the bottom formwork. Most of them use a fitted external vibrating device, which can easily cause damage to the inner formwork. At the same time, most of the existing box girder inner formworks lack adaptive connecting plates between the two-section adjustable top plates, resulting in direct contact between the sliding top plates and concrete, which makes the slide groove and other parts prone to failure, thereby affecting the reuse efficiency of the inner formwork components. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a self-regulating inner mold system for prefabricated box beams.

[0005] The present invention is implemented in this way: a self-regulating inner mold system for prefabricated box beams is constructed, and the device includes a sliding seat crossbeam; a displacement trolley is arranged on the top of the sliding seat crossbeam for displacement; the interior of the displacement trolley is fixedly connected to the transverse cylinder of the double-axis adjustment cylinder assembly; a side crossbeam is fixedly installed at the end of the piston rod of the transverse cylinder of the double-axis adjustment cylinder assembly; the side surface of the top of the side crossbeam is fixedly connected to the vertical cylinder of the double-axis adjustment cylinder assembly; a light sensor with a detection function is fixedly installed on the middle side of the top of the side crossbeam by bolts; a side crossbeam is fixedly installed at the end of the piston rod of the vertical cylinder of the double-axis adjustment cylinder assembly Side top plate; the inner wall of the side top plate is rotatably connected with a linkage hydraulic cylinder by bolts, and the end of the piston rod on the bottom side of the linkage hydraulic cylinder is rotatably connected to the top side of the inner wall of the side template; the upper and lower sides of the inner wall of the side template are rotatably provided with linkage hydraulic cylinders, and the end of the piston rod of the linkage hydraulic cylinder on the bottom side of the inner wall of the side template is rotatably connected to the top side of the inner wall of the side bottom plate; a combined top plate is slidably provided at the groove on the inner side of the side top plate; side connecting parts are fixedly provided at the connection between the side top plate, the linkage hydraulic cylinder and the side bottom plate; a hydraulic system is fixedly installed on the middle side of the top of the displacement trolley by bolts.

[0006] Preferably, the combined top plate includes a sliding beam slidably arranged on the inner wall of the side top plate and the side bottom plate on the right side of the displacement trolley; a groove is arranged on the top of the sliding beam, and a magnetic isolation sleeve is fixedly installed inside the groove by threads; a coil block is fixedly installed on the middle side of the magnetic isolation sleeve by bolts.

[0007] Preferably, permanent magnetic clamps are slidably arranged on both left and right sides of the magnetic isolation sleeve; the permanent magnetic clamps are clamped and fixed with the convex strips at the bottom of the joint plate; a groove is arranged on the side of the joint plate, and a rubber strip with a sealing function is glued and fixed inside the groove.

[0008] Preferably, a total of five groups of combined top plates are arranged between the displacement trolley and the two groups of side top plates on the vertical cylinder top side of the dual-axis adjustment cylinder assembly, and the length of the sliding beam is the same as the horizontal cylinder stroke length of the dual-axis adjustment cylinder assembly.

[0009] Preferably, the side connecting parts include hinges fixedly installed at the connection points of the side top plate and the side template by bolts; a pressed rubber plate is clamped and fixed at the fixing points of the hinge, the side top plate and the inner wall of the side template; the pressed rubber plate is glued and fixed to the side of the magnetic isolation rubber plate; a groove is provided on the top of the magnetic isolation rubber plate, and a permanent magnetic side block is glued and fixed inside the groove; a bridge plate is plugged and fixed to the side of the magnetic isolation rubber plate; a thin rubber rod is glued and fixed to the side of the bridge plate.

[0010] Preferably, a rubber airbag is provided in the groove between the magnetic isolation rubber plate and the rubber thin rod, and the airbag and the bridging plate form a semi-enclosed state.

[0011] Preferably, the hydraulic system is specifically composed of an engine with power drive, a control valve with flow diversion and flow rate control functions, and a liquid storage tank; a one-way valve with two-way liquid control is provided at the end of the connecting pipe of the control valve, and the one-way valve is respectively arranged at the oil guide ports of the linkage hydraulic cylinder and the dual-axis adjustment cylinder assembly.

[0012] Preferably, a visual component with a visual detection function is arranged on the side of the displacement vehicle, and the visual component is specifically composed of a mechanical arm and a visual camera arranged at the end of the mechanical arm.

[0013] A method for using a self-regulating inner mold system for a prefabricated box beam comprises the following steps:

[0014] Step 1: Construction preparation: According to the position of the binding steel bars and the outer mold, the spatial position of the slide beam and the displacement trolley is adjusted through the external centering equipment. The slide beam and the displacement trolley are kept at the center of the outer mold through the centering adjustment, and the force conditions of the slide beam, the displacement trolley and the double-axis adjustment cylinder assembly are calculated. Here, according to the construction plan data, and through , where F represents the maximum load of the cylinder; P represents the working pressure of the cylinder; A represents the effective area of ​​the cylinder, calculate and select the appropriate hydraulic cylinder body of the linkage hydraulic cylinder and the dual-axis adjustment cylinder assembly;

[0015] Step 2: Inner mold design: According to the construction inspection data, calculate the overall length data of the inner mold and the required number of joint plates, and control the double-axis adjustment cylinder assembly inside the displacement trolley and on the top side of the side top plate through the control terminal to adjust the distance between the two sets of side top plates and the side bottom plates to the appropriate width, and use the linkage hydraulic cylinder to adjust the relative angle between the side top plate, the side template and the side bottom plate, and then use external equipment to hoist the joint plate onto the sliding beam. Since the sliding beam is fixedly set on the inner wall of the side top plate on one side and is slidably set On the inner wall of the side top plate on the other side, after the adjustment is completed, the magnetic isolation sleeves and coil blocks on the multiple groups of sliding beams on the bottom side of the side top plate can be maintained on the same horizontal line. At this time, the protruding block on the bottom side of the sliding beam is embedded between the two adjacent groups of magnetic isolation sleeves, and then the coil block is energized to generate a magnetic field to push the permanent magnetic clamp to clamp the adjacent joint plate, and the energy is controlled to be supplied to the adjacent other groups of coil blocks so that the permanent magnetic clamp inside them completes the assembly of multiple groups of joint plates on the side of the side top plate and the side bottom plate; the joint plate on the side of the side bottom plate is installed in sections according to the casting requirements;

[0016] Step 3, adjust and apply paint; after the slide beam completes the centering action, the slide beam is the center line. At this time, the two sets of side top plates on the top side of the slide beam are the same as the outer mold and binding steel bars of the precast beam field. Then the distance is measured through the light sensor on the side top plate, and then the hydraulic system is used to hydraulically supply energy to the vertical cylinder of the double-axis adjustment cylinder assembly, so that the vertical cylinder of the double-axis adjustment cylinder assembly drives the designed inner mold system to adjust up and down. After the appearance is inspected and found to be correct, the surface of the inner mold system composed of the side top plate, the combined top plate, the side template and the side bottom plate is coated with a release agent;

[0017] Step 4: Debugging and anchoring: Use the displacement trolley and the double-axis adjustment cylinder assembly to drive the assembled inner mold and move it along the slide beam to the inner side of the outer mold in the prefabricated beam yard. At this time, use the visual component set on the displacement trolley to adjust the distance between the inner and outer molds; then use the one-way valve in the hydraulic system to seal and lock the hydraulic cylinders at each position, so that the linkage hydraulic cylinder and the double-axis adjustment cylinder assembly are kept under stable hydraulic conditions;

[0018] Step 5, pouring construction; during the pouring of concrete, since the joint plates on the sides of the side bottom plates are installed in sections, that is, holes with slots are formed in the spacing between the two sets of side bottom plates, the holes are used here to supplement the concrete voids appearing under the bottom mold, and the holes are also used to vibrate and exhaust the concrete under the bottom mold, and finally the sectioned joint plates are assembled again, and the rubber strips on the sides of the joint plates are used for sealing;

[0019] Step six, shrink the inner mold; use the linkage hydraulic cylinder and the double-axis adjustment cylinder assembly to stop the lifting action of the inner mold parts formed by the side top plate, the combined top plate, the side template and the side bottom plate. At this time, stop supplying energy to the coil block to loosen the joint plate, use external equipment to clamp and bring out the joint plate, and then use the linkage hydraulic cylinder and the double-axis adjustment cylinder assembly to drive the side top plate, the side template and the side bottom plate to shrink, and finally use the displacement trolley to pull the entire inner mold to slide out along the slide beam.

[0020] The present invention has the following advantages: The present invention provides a self-regulating inner mold system for prefabricated box beams through improvement, which has the following improvements compared with similar equipment:

[0021] The self-regulating inner form system for prefabricated box girders described in the present invention assembles the side top plates and the side bottom plates by setting a combined top plate, adopts the overall assembly and segmented assembly of the cross plates to avoid the difficulty of the existing adjustable formwork to adapt to different widths during the pouring process, and utilizes the segmented installation to solve the problem that the concrete on the middle side below the bottom formwork is difficult to vibrate and exhaust. It also reduces the solidification of concrete flowing in with the cooperation of the side connectors, which leads to the failure of the adjusting joint of the formwork. By setting the centering support of the sliding seat crossbeam and the displacement trolley, the load of the side top plate is completely transmitted to the sliding seat crossbeam by the double-axis adjusting cylinder assembly, thereby reducing the disturbance of the concrete below the bottom formwork during the pouring process and avoiding the formation of cracks during the concrete pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the axle-side structure of the displacement trolley, the double-axis adjustment cylinder assembly and the hydraulic system of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the side top plate, the linkage hydraulic cylinder, the combined top plate and the side template of the present invention;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the combined top plate of the present invention;

[0026] Figure 5 It is a schematic diagram of the exploded structure of the side connecting piece of the present invention;

[0027] Figure 6 It is a schematic diagram of the process of the present invention.

[0028] Among them: sliding seat beam-1, displacement trolley-2, side top plate-3, linkage hydraulic cylinder-4, combined top plate-5, side template-6, side bottom plate-7, double-axis adjustment cylinder assembly-8, side beam-9, light sensor-10, side connector-11, hydraulic system-12, sliding beam-51, magnetic isolation sleeve-52, coil block-53, permanent magnetic clamping block-54, joint plate-55, rubber strip-56, hinge-111, pressed rubber plate-112, magnetic isolation rubber plate-113, permanent magnetic side block-114, bridge plate-115, rubber rod-116. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 to Figure 6 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1 to Figure 6 A self-regulating inner mold system for a prefabricated box beam of the present invention comprises a sliding crossbeam 1; a displacement trolley 2 is arranged on the top of the sliding crossbeam 1 for displacement, and a visual component with a visual detection function is arranged on the side of the displacement trolley 2, and the visual component is specifically composed of a mechanical arm and a visual camera arranged at the end of the mechanical arm; the interior of the displacement trolley 2 is fixedly connected to the horizontal cylinder of the double-axis adjustment cylinder assembly 8; a side crossbeam 9 is fixedly installed at the end of the piston rod of the horizontal cylinder of the double-axis adjustment cylinder assembly 8; the top side of the side crossbeam 9 is fixedly connected to the vertical cylinder of the double-axis adjustment cylinder assembly 8; a light sensor 10 with a detection function is fixedly installed on the middle side of the top of the side crossbeam 9 by bolts; the double-axis adjustment cylinder assembly The piston rod end of the vertical cylinder of part 8 is fixedly installed with the side top plate 3; the inner wall of the side top plate 3 is rotatably connected with the linkage hydraulic cylinder 4 by bolts, and the piston rod end of the bottom side of the linkage hydraulic cylinder 4 is rotatably connected to the top side of the inner wall of the side template 6; the upper and lower sides of the inner wall of the side template 6 are rotatably provided with the linkage hydraulic cylinder 4, and the piston rod end of the linkage hydraulic cylinder 4 on the bottom side of the inner wall of the side template 6 is rotatably connected to the top side of the inner wall of the side bottom plate 7; a combined top plate 5 is slidably provided at the groove on the inner side of the side top plate 3; side connecting parts 11 are fixedly provided at the connection between the side top plate 3, the linkage hydraulic cylinder 4 and the side bottom plate 7; a hydraulic system 12 is fixedly installed on the middle side of the top of the displacement trolley 2 by bolts.

[0032] The combined top plate 5 includes a sliding beam 51 slidably arranged on the inner wall of the side top plate 3 and the side bottom plate 7 on the right side of the displacement trolley 2; a groove is arranged on the top of the sliding beam 51, and a magnetic isolation sleeve 52 is fixedly installed inside the groove by threads; a coil block 53 is fixedly installed on the middle side of the magnetic isolation sleeve 52 by bolts; permanent magnetic clamps 54 are slidably arranged on the left and right sides of the magnetic isolation sleeve 52; the permanent magnetic clamps 54 are clamped and fixed with the convex strips at the bottom of the joint plate 55; a groove is arranged on the side of the joint plate 55, and a rubber strip 56 with a sealing function is glued and fixed inside the groove.

[0033] A total of five groups of combined top plates 5 are arranged between the displacement trolley 2 and the two groups of side top plates 3 on the vertical cylinder top side of the dual-axis adjustment cylinder assembly 8, and the length of the sliding beam 51 is the same as the horizontal cylinder stroke length of the dual-axis adjustment cylinder assembly 8.

[0034] The hydraulic system 12 is specifically composed of an engine with power drive, a control valve with flow diversion and flow rate control functions, and a fluid storage tank; a one-way valve with two-way liquid control is provided at the end of the connecting pipe of the control valve, and the one-way valve is respectively arranged at the oil guide ports of the linkage hydraulic cylinder 4 and the dual-axis adjustment cylinder assembly 8.

[0035] Embodiment 2:

[0036] See also Figure 1 to Figure 6 Compared with the first embodiment, the present invention provides a self-regulating inner mold system for a prefabricated box girder, and the present embodiment further includes: the side connecting member 11 includes a hinge 111 fixedly installed at the connection between the side top plate 3 and the side formwork 6 by bolts; a pressing rubber plate 112 is clamped and fixed at the fixing position between the hinge 111 and the inner wall of the side top plate 3 and the side formwork 6; the pressing rubber plate 112 is adhesively fixed to the side of the magnetic isolation rubber plate 113; a groove is provided at the top of the magnetic isolation rubber plate 113, and a permanent magnetic side block 114 is adhesively fixed inside the groove; a bridge plate 115 is plugged and fixed on the side of the magnetic isolation rubber plate 113; a rubber thin rod 116 is adhesively fixed on the side of the bridge plate 115; a rubber airbag is provided at the groove between the magnetic isolation rubber plate 113 and the rubber thin rod 116, and the airbag and the bridge plate 115 form a semi-enclosed state.

[0037] The working principle of the self-regulating inner mold system for prefabricated box beams is as follows:

[0038] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0039] Second, the staff first adjusts the spatial position of the slide beam 1 and the displacement trolley 2 through the external centering equipment according to the binding steel bars and the outer mold position. The slide beam 1 and the displacement trolley 2 are kept at the center of the outer mold through the centering adjustment, and the force conditions of the slide beam 1 and the displacement trolley 2 and the double-axis adjustment cylinder assembly 8 are calculated. Here, according to the construction plan data, , where F represents the maximum load of the cylinder; P represents the working pressure of the cylinder; A represents the effective area of ​​the cylinder, calculate and select the appropriate hydraulic cylinder body of the linkage hydraulic cylinder 4 and the dual-axis adjustment cylinder assembly 8;

[0040] Third, according to the construction inspection data, the overall length data of the inner mold and the required number of joint plates 55 are calculated, and the double-axis adjustment cylinder assembly 8 inside the displacement trolley 2 and on the top side of the side top plate 3 is controlled by the control terminal to perform adjustment actions, so that the spacing between the two sets of side top plates 3 and the side bottom plates 7 is adjusted to an appropriate width, and the relative angles between the side top plates 3, the side templates 6 and the side bottom plates 7 are adjusted by the linkage hydraulic cylinder 4, and then the joint plate 55 is hoisted and placed on the sliding beam 51 by external equipment. Here, the sliding beam 51 is set to adopt different connection methods with the side top plates 3 on the left and right sides: the left end side top plate 3 is fixed, and the right end side top plate 3 is fixed. The side top plate 3 is of sliding type, so after the adjustment is completed, the magnetic isolation sleeves 52 and the coil blocks 53 on the multiple groups of sliding beams 51 on the bottom side of the side top plate 3 can be kept on the same horizontal line. At this time, the bottom side protrusion of the sliding beam 51 is embedded between the two adjacent groups of magnetic isolation sleeves 52, and then the coil blocks 53 are energized to generate a magnetic field to push the permanent magnetic clamping block 54 to clamp the adjacent joint plates 55, and the adjacent other groups of coil blocks 53 are energized so that the permanent magnetic clamping blocks 54 inside them complete the assembly of the multiple groups of joint plates 55 on the side of the side top plate 3 and the side bottom plate 7; here, the joint plates 55 on the side of the side bottom plate 7 are installed in sections according to the casting requirements;

[0041] Fourth, after the slide beam 1 completes the centering action, the slide beam 1 is the center line. At this time, the two sets of side top plates 3 on the top side of the slide beam 1 are the same as the outer mold and binding steel bars of the precast beam field. Then, the distance is measured by the light sensor 10 on the side top plate 3, and then the hydraulic system 12 is used to hydraulically supply energy to the vertical cylinder of the double-axis adjustment cylinder assembly 8, so that the vertical cylinder of the double-axis adjustment cylinder assembly 8 drives the designed inner mold system to adjust up and down. After the appearance is inspected and found to be correct, the side top plates 3, The surface of the inner mold system composed of the combined top plate 5, the side mold plate 6 and the side bottom plate 7 is coated with a mold release agent; the assembled inner mold is driven by the displacement trolley 2 and the double-axis adjustment cylinder assembly 8 and displaced along the slide crossbeam 1 to the inner side of the outer mold of the prefabricated beam yard, and the visual component set on the displacement trolley 2 is used to adjust the distance between the inner and outer molds; then the one-way valve in the hydraulic system 12 is used to seal and lock the hydraulic cylinders at each position, so that the linkage hydraulic cylinder 4 and the double-axis adjustment cylinder assembly 8 are kept under stable hydraulic conditions;

[0042] Fifth, during the pouring of concrete, since the joint plate 55 on the side of the side bottom plate 7 is installed in sections, that is, a slotted hole is formed in the spacing between the two sets of side bottom plates 7, the holes are used here to supplement the concrete voids below the bottom mold, and the holes are also used to vibrate and exhaust the concrete below the bottom mold. Finally, the segmented joint plate 55 is assembled again, and the rubber strip 56 on the side of the joint plate 55 is used to seal; the linkage hydraulic cylinder 4 and the double-axis adjustment cylinder assembly 8 are used to stop the inner mold component formed by the side top plate 3, the combined top plate 5, the side template 6 and the side bottom plate 7 from being kept lifted up. At this time, the coil block 53 is stopped from being energized to release the joint plate 55, and the joint plate 55 is clamped and taken out by an external device, and then the linkage hydraulic cylinder 4 and the double-axis adjustment cylinder assembly 8 drive the side top plate 3, the side template 6 and the side bottom plate 7 to shrink, and finally the entire inner mold is pulled out along the slide beam 1 by the displacement trolley 2.

[0043] The present invention provides a self-regulating inner mold system for prefabricated box girders through improvements. The side top plate 3 and the side bottom plate 7 are assembled by setting a combined top plate 5. The horizontal plate is assembled as a whole and assembled in sections to avoid the existing adjustable template from being difficult to adapt to different widths during the pouring process. The segmented installation is used to solve the problem that the concrete on the middle side below the bottom mold is difficult to vibrate and exhaust. The solidification phenomenon of concrete inflow is reduced with the cooperation of the side connecting piece 11, which causes the failure of the adjusting joint of the template. The centering support of the sliding seat cross beam 1 and the displacement trolley 2 is set, so that the load of the side top plate 3 is completely transmitted to the sliding seat cross beam 1 by the double-axis adjusting cylinder assembly 8, thereby reducing the disturbance of the concrete below the bottom mold during the pouring process and avoiding the formation of cracks during the concrete pouring process.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-regulating inner mold system for a prefabricated box beam, comprising a sliding seat crossbeam (1); a displacement trolley (2) is arranged on the top of the sliding seat crossbeam (1); the interior of the displacement trolley (2) is fixedly connected to the transverse cylinder of a double-axis adjustment cylinder assembly (8); a side crossbeam (9) is fixedly installed at the end of the piston rod of the transverse cylinder of the double-axis adjustment cylinder assembly (8); the top side of the side crossbeam (9) is fixedly connected to the vertical cylinder of the double-axis adjustment cylinder assembly (8); the characteristics are: A light sensor (10) having a detection function is fixedly installed on the middle side of the top of the side crossbeam (9) by bolts; a side top plate (3) is fixedly installed at the end of the piston rod of the vertical cylinder of the dual-axis adjustment cylinder assembly (8); a linkage hydraulic cylinder (4) is rotatably connected to the inner wall of the side top plate (3) by bolts, and the end of the piston rod of the bottom side of the linkage hydraulic cylinder (4) is rotatably connected to the top side of the inner wall of the side template (6); linkage hydraulic cylinders (4) are rotatably arranged on the upper and lower sides of the inner wall of the side template (6), and the end of the piston rod of the linkage hydraulic cylinder (4) on the bottom side of the inner wall of the side template (6) is rotatably connected to the top side of the inner wall of the side bottom plate (7); a combined top plate (5) is slidably arranged at the inner groove of the side top plate (3); a side connecting piece (11) is fixedly arranged at the connection between the side top plate (3), the linkage hydraulic cylinder (4) and the side bottom plate (7); and a hydraulic system (12) is fixedly installed on the middle side of the top of the displacement trolley (2) by bolts.

2. According to claim 1, a self-regulating inner mold system for prefabricated box beams is characterized in that: The combined top plate (5) comprises a sliding beam (51) slidably arranged on the inner wall of the side top plate (3) and the side bottom plate (7) on the right side of the displacement trolley (2); a groove is arranged on the top of the sliding beam (51), and a magnetic isolation sleeve (52) is fixedly installed in the groove by means of threads; a coil block (53) is fixedly installed in the middle side of the magnetic isolation sleeve (52) by means of bolts.

3. According to claim 2, a self-regulating inner mold system for prefabricated box beams is characterized in that: Permanent magnetic clamping blocks (54) are slidably arranged on both left and right sides of the interior of the magnetic isolation sleeve (52); the permanent magnetic clamping blocks (54) are clamped and fixed with the convex strips at the bottom of the joint plate (55); a groove is arranged on the side of the joint plate (55), and a rubber strip (56) with a sealing function is glued and fixed inside the groove.

4. According to claim 3, the self-regulating inner mold system for prefabricated box beams is characterized in that: A total of five groups of combined top plates (5) are arranged between the displacement trolley (2) and the two groups of side top plates (3) on the vertical cylinder top side of the dual-axis adjustment cylinder assembly (8), and the length of the sliding beam (51) is the same as the horizontal cylinder stroke length of the dual-axis adjustment cylinder assembly (8).

5. According to claim 4, a self-regulating inner mold system for prefabricated box beams is characterized in that: The side connecting member (11) comprises a hinge (111) fixedly mounted at the connection between the side top plate (3) and the side template (6) by bolts; a pressed rubber plate (112) is clamped and fixed at the fixing position between the hinge (111) and the inner wall of the side top plate (3) and the side template (6); the pressed rubber plate (112) is adhesively fixed to the side of the magnetic isolation rubber plate (113); a groove is provided at the top of the magnetic isolation rubber plate (113), and a permanent magnetic side block (114) is adhesively fixed inside the groove; a bridge plate (115) is plugged and fixed to the side of the magnetic isolation rubber plate (113); and a thin rubber rod (116) is adhesively fixed to the side of the bridge plate (115).

6. The self-regulating inner mold system for prefabricated box beams according to claim 5 is characterized in that: A rubber airbag is provided in the groove between the magnetic isolation rubber plate (113) and the rubber thin rod (116), and the airbag and the bridge plate (115) form a semi-enclosed state.

7. The self-regulating inner mold system for prefabricated box beams according to claim 6 is characterized in that: The hydraulic system (12) specifically comprises an engine with power drive, a control valve with flow diversion and flow rate control functions, and a liquid storage tank; a one-way valve with two-way liquid control is provided at the end of the connecting pipe of the control valve, and the one-way valve is respectively provided at the oil guide ports of the linkage hydraulic cylinder (4) and the dual-axis adjustment cylinder assembly (8).

8. The self-regulating inner mold system for prefabricated box beams according to claim 7, characterized in that: A visual component with a visual detection function is arranged on the side of the displacement vehicle (2), and the visual component specifically consists of a mechanical arm and a visual camera arranged at the end of the mechanical arm.

9. A method for using a self-regulating inner mold system for a prefabricated box girder, implementing the self-regulating inner mold system for a prefabricated box girder as claimed in claim 8, characterized in that: The following steps are involved: Step 1: Construction preparation: According to the position of the tied steel bars and the outer mold, the spatial position of the slide beam (1) and the displacement trolley (2) is adjusted by the external centering device. The slide beam (1) and the displacement trolley (2) are kept at the center of the outer mold through the centering adjustment, and the force conditions of the slide beam (1) and the displacement trolley (2) and the double-axis adjustment cylinder assembly (8) are calculated. Here, according to the construction plan data, and through , where F represents the maximum load of the cylinder; P represents the working pressure of the cylinder; A represents the effective area of ​​the cylinder, calculate and select the appropriate hydraulic cylinder body of the linkage hydraulic cylinder (4) and the dual-axis adjustment cylinder assembly (8); Step 2, inner mold design; according to the construction inspection data, the overall length data of the inner mold and the required number of joint plates (55) are calculated, and the double-axis adjustment cylinder assembly (8) inside the displacement trolley (2) and the top side of the side top plate (3) is controlled by the control terminal to perform adjustment actions, so that the spacing between the two sets of side top plates (3) and the side bottom plates (7) is adjusted to a suitable width, and the relative angles between the side top plates (3), the side templates (6) and the side bottom plates (7) are adjusted by using the linkage hydraulic cylinder (4), and then the joint plates (55) are hoisted and placed on the sliding beam (51) by using external equipment. Since the sliding beam (51) is fixedly set on the inner wall of the side top plate (3) on one side and slidably set on the side top plate on the other side, (3) inner wall, after the adjustment is completed, the magnetic isolation sleeves (52) and coil blocks (53) on the multiple groups of sliding beams (51) on the bottom side of the side top plate (3) can be maintained on the same horizontal line, and at this time, the protruding block on the bottom side of the sliding beam (51) is embedded between two adjacent groups of magnetic isolation sleeves (52), and then the coil blocks (53) are energized to generate a magnetic field, thereby pushing the permanent magnetic clamping block (54) to clamp the adjacent joint plate (55), and controlling the energy supply to the adjacent other groups of coil blocks (53) so that the permanent magnetic clamping block (54) inside them completes the assembly of the multiple groups of joint plates (55) on the side of the side top plate (3) and the side bottom plate (7); the joint plates (55) on the side of the side bottom plate (7) are installed in sections according to the casting requirements; Step 3, adjustment and coating; since the sliding seat cross beam (1) is the center line after the centering action is completed, the sliding seat cross beam (1) is the center line. At this time, the two sets of side top plates (3) on the top side of the sliding seat cross beam (1) are at the same distance from the precast beam field outer mold and the binding steel bars. Then, the distance is measured by the light sensor (10) on the side top plate (3), and then the hydraulic system (12) is used to hydraulically supply energy to the vertical cylinder of the double-axis adjustment cylinder assembly (8), so that the vertical cylinder of the double-axis adjustment cylinder assembly (8) drives the designed inner mold system to adjust up and down. After the appearance is inspected and found to be correct, the surface of the inner mold system composed of the side top plate (3), the combined top plate (5), the side template (6) and the side bottom plate (7) is coated with a release agent; Step 4: debugging and anchoring; the assembled inner mold is driven by the displacement trolley (2) and the double-axis adjustment cylinder assembly (8) and displaced along the sliding seat crossbeam (1) to the inner side of the outer mold of the precast beam yard, and the visual assembly provided on the displacement trolley (2) is used to adjust the distance between the inner and outer molds; then, the one-way valve in the hydraulic system (12) is used to seal and lock the hydraulic cylinders at various positions, so that the linkage hydraulic cylinder (4) and the double-axis adjustment cylinder assembly (8) are kept under stable hydraulic conditions; Step 5, pouring construction; during the pouring of concrete, since the joint plate (55) on the side of the side bottom plate (7) is installed in sections, that is, a hole with a slot is formed in the distance between the two sets of side bottom plates (7), the hole is used to supplement the concrete cavity below the bottom mold, and the hole is also used to vibrate and exhaust the concrete below the bottom mold, and finally the sectioned joint plate (55) is assembled again, and the rubber strip (56) on the side of the joint plate (55) is used to seal; Step six, shrinking the inner mold; using the linkage hydraulic cylinder (4) and the double-axis adjustment cylinder assembly (8) to stop the inner mold component formed by the side top plate (3), the combined top plate (5), the side template (6) and the side bottom plate (7) from maintaining the lifting action, at this time, by stopping the energy supply to the coil block (53) to release the joint plate (55), using external equipment to clamp and bring out the joint plate (55), then the linkage hydraulic cylinder (4) and the double-axis adjustment cylinder assembly (8) drive the side top plate (3) and the side template (6) and the side bottom plate (7) to shrink, and finally, by using the displacement trolley (2), the entire inner mold is pulled along the slide beam (1) to slide out.

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