Formwork device for pouring an airport drainage box culvert and method of use

Abstract

A casting template device and method for airport drainage culverts include an outer template assembly placed in the foundation pit of the drainage culvert, a support beam (4) set in the outer template assembly, an inner template (3) set in the outer template assembly, and an inner shrinkage support component set in the inner template (3). Through the outer template assembly and the support beam (4), the bottom wall (10) of the drainage culvert is cast in a template manner. Through the inner template (3), the side wall and top wall of the drainage culvert are cast in a template manner. Through the inner shrinkage support component, the expansion normal state and the closing and removal state of the inner template (3) are controlled. The casting template located inside the drainage culvert is extracted and the casting template located outside the drainage culvert is pulled out. This solves the technical problem of using wooden templates and scaffolding for template support when trench excavation is carried out by open excavation, thus improving the casting efficiency of airport drainage culverts.

Description

Technical Field

[0001] This invention relates to a casting formwork device and a method of using it, and more particularly to a casting formwork device and a method of using it for airport drainage box culverts. Background Technology

[0002] Due to the large area of ​​airports, moisture from nature can enter through various channels, posing a hazard and threatening the safety of aircraft flight and landing. To ensure safe takeoff and landing under various weather conditions and to successfully complete related flight missions, it is essential to eliminate the hazards of moisture to airports. Linear precast drainage ditches are excellent drainage products, offering superior performance and rapid drainage, hence their widespread use. Therefore, the casting formwork device used for airport drainage culverts is a crucial construction component. Currently, existing casting formwork devices for airport drainage culverts still employ the open-cut method for trench excavation, followed by a series of processes including positioning and layout, rebar tying, formwork support, and concrete pouring. The use of wooden formwork and scaffolding for formwork support leads to problems such as low formwork stability, inconvenient assembly and disassembly, and poor reusability, thus affecting the efficiency of airport drainage culvert casting.

[0003] This invention, through its technical features of extracting the formwork used for casting inside the drainage culvert and pulling out the formwork used for casting outside the drainage culvert, effectively explores and studies the technical problems of using wooden formwork and scaffolding for formwork support in trench excavation using the open-cut method.

[0004] The statements herein provide only background information related to this invention and do not necessarily constitute prior art. Based on the technical disclosure provided by the applicant on November 15, 2023, which addresses practical technical problems encountered during the work process, and through searching similar patent documents and existing technical problems, technical features, and technical effects in the background art, the technical solution of this invention is proposed. Summary of the Invention

[0005] The subject of this invention is a casting formwork device for airport drainage box culverts.

[0006] The subject of this invention is a method of using a casting template device for airport drainage culverts.

[0007] In order to overcome the above-mentioned technical shortcomings, the purpose of this invention is to provide a casting template device and a method for using airport drainage box culverts, thereby improving the casting efficiency of airport drainage box culverts.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: a casting template device for airport drainage box culverts, comprising an outer template assembly placed in the foundation pit of the drainage box culvert, a support beam disposed in the outer template assembly, an inner template disposed in the outer template assembly, and an inner shrinkage support component disposed in the inner template.

[0009] By designing external formwork components, support beams, internal formwork, and internal shrinkage support components, the bottom wall of the drainage culvert can be cast in a formwork manner through the external formwork components and support beams. The side walls and top walls of the drainage culvert can be cast in a formwork manner through the internal formwork. The internal shrinkage support components can control the expansion and closure / removal states of the internal formwork. This allows for the extraction of casting formwork located inside the drainage culvert and the removal of casting formwork located outside the drainage culvert. This solves the technical problem of using wooden formwork and scaffolding for formwork support in trench excavation using the open-cut method, thus improving the casting efficiency of the airport drainage culvert.

[0010] The present invention designs a method for interconnecting the outer formwork assembly, support beam, inner formwork, and inner shrinkage support component by extracting the casting formwork located inside the drainage culvert and pulling out the casting formwork located outside the drainage culvert.

[0011] This invention designs a method for connecting the inner shrinkage support component with the outer template assembly, support beam, and inner template by controlling the connection according to the expanded normal state and the closed and removed state.

[0012] The present invention designs an outer template component that includes a first outer template and a second outer template.

[0013] The present invention designs an internally retractable support component that includes a lifting telescopic cylinder, a telescopic rod, and a trolley, or is configured as a displacement cylinder.

[0014] The technical effect of the above five technical solutions is that they enable control over the state of the formwork used for pouring inside the drainage culvert, meeting the requirements of both the pouring state and the removal state.

[0015] The present invention comprises an inner template and a support beam respectively provided between the first outer template and the second outer template, a trolley provided in the inner template and a lifting telescopic cylinder provided between the trolley and the inner template, and a telescopic rod provided between the lifting telescopic cylinder and the trolley and the inner template.

[0016] The technical effect of the above technical solution is that the basic technical solution of the present invention is formed by the first outer template, the second outer template, the inner template, the support beam, the lifting telescopic cylinder, the telescopic rod and the trolley, which solves the technical problem of the present invention.

[0017] This invention designs a drainage culvert bottom wall as a cement mortar block with an "I"-shaped groove. The middle part of the "I"-shaped groove is connected to a trolley, the edge of the "I"-shaped groove is connected to an inner template, one outer edge of the "I"-shaped groove is connected to a first outer template, the other outer edge of the "I"-shaped groove is connected to a second outer template, and the lower end face of the drainage culvert bottom wall is connected to the upper end face of a plain concrete block, which in turn is connected to a crushed stone layer.

[0018] The technical effect of the above solution is that it realizes the setting of drainage box culvert with a lower slot, thereby improving the drainage effect.

[0019] The present invention designs a first outer template and a second outer template as separate sheet-like bodies with hinges in the middle. The upper part of the inner end face of the first outer template and the upper part of the inner end face of the second outer template are respectively connected to the support beam. The lower part of the inner end face of the first outer template and the lower part of the inner end face of the second outer template are respectively distributed correspondingly to the inner template. The lower end face of the first outer template and the lower end face of the second outer template are respectively connected to the plain concrete block. The lower part of the inner end face of the first outer template and the lower part of the inner end face of the second outer template are respectively connected to the bottom wall of the drainage culvert.

[0020] The present invention is designed such that the support beam is configured as a plate part I and a beam part, and the upper end of the horizontal part of the plate part I is respectively configured to be connected to the end of the beam part. The vertical part of one of the plate parts I located on the beam part is configured to be connected to the first outer template, and the vertical part of the other plate part I located on the beam part is configured to be connected to the second outer template. The plate part I is configured as an L-shaped sheet and the beam part is configured as a strip.

[0021] The technical effects of the above two solutions are as follows: they enable the setting of clamping templates for the bottom wall of the drainage box culvert in the foundation pit, and enable the upper part of the first outer template and the upper part of the second outer template to be joined together to form a curing zone.

[0022] This invention designs an inner template comprising plate part II, plate part III, plate part IV, plate part V, and plate part VI. The inner end face of plate part II is connected to the vertical end face of plate part III via a hinge. The horizontal end face of plate part III is connected to one end face of plate part IV via a hinge, and the other end face of plate part IV is connected to the horizontal end face of plate part V via a hinge. The vertical end face of plate part V is connected to the inner end face of plate part VI via a hinge. The inner side face of plate part IV is connected to a lifting telescopic cylinder. The inner side face of plate part II and plate part III... The inner side surface, the inner side surface of plate V, and the inner side surface of plate VI are respectively connected to the telescopic rod via pins. The outer side surface of plate II and the outer side surface of the vertical part of plate III are respectively distributed corresponding to the first outer template. The outer side surface of the vertical part of plate V and the outer side surface of plate VI are respectively distributed corresponding to the second outer template. Plate II and plate VI are respectively set as flat sheet-like bodies. Plate III and plate V are respectively set as L-shaped sheet-like bodies. Plate IV is set as a flat sheet-like body with a through hole. The through hole of plate IV is connected to the connecting bolt located on the lifting telescopic cylinder.

[0023] The technical effects of the above technical solution are as follows: it realizes the setting of side wall and top wall templates for the overlapping drainage box culvert composed of five sections of panels, and realizes the closure with section III, section IV and section V as the main body.

[0024] The present invention designs an electric push rod with a threaded hole at the telescopic end of the lifting telescopic cylinder, wherein one end of the lifting telescopic cylinder is configured to be connected to a trolley, the other end of the lifting telescopic cylinder is configured to be connected to an inner template, and the threaded hole of the lifting telescopic cylinder is configured to be connected to a connecting bolt located on the inner template.

[0025] The technical effect of the above technical solution is that it enables the inner template to generate a closing force.

[0026] The present invention designs a telescopic rod as a two-section sliding arm, with one end of the telescopic rod connected to a trolley and the other end of the telescopic rod connected to an inner template via a pin.

[0027] The technical effect of the above solution is that it enables the guidance of the closed inner template.

[0028] This invention designs a trolley comprising a vertical section I, a vertical section II, an inner frame, a rotating wheel section I, and a guide rail section. The inner side of the vertical section I is connected to the lower part of one side of the inner frame, and the inner side of the vertical section II is connected to the lower part of the other side of the inner frame. The lower end faces of both the vertical section I and the vertical section II are connected to the rotating wheel section I, which is in contact with the guide rail section. The upper end faces of both the vertical section I and the vertical section II are connected to a lifting telescopic cylinder. The outer sides of both the vertical section I and the vertical section II are respectively... To connect with the telescopic rod, and with the upper side of the inner frame section configured to connect with the lifting telescopic cylinder, vertical plate section I and vertical plate section II are respectively configured as rectangular beam-shaped bodies with a U-shaped groove on the lower end face, and the inner frame section is configured as a rectangular frame body with a <-shaped vertical rod. The U-shaped vertical rod corner of the inner frame section and the lower horizontal bar end of the inner frame section are respectively configured to connect with vertical plate section I and vertical plate section II, and the upper horizontal bar end of the inner frame section is configured to connect with the lifting telescopic cylinder. Rotating wheel section I is configured as a circular disc-shaped body, and rotating wheel section I is configured to connect with the U-shaped groove of vertical plate section I and the U-shaped groove of vertical plate section II through a rotating shaft. The guide rail section is configured as a U-shaped channel steel.

[0029] The technical effects of the above solutions are: to enable the moving frame support within the inner template and to enable the extraction of the closed inner template.

[0030] The present invention is designed such that the first outer template, the second outer template, and the inner template are distributed with the support beam, the lifting telescopic cylinder, the telescopic rod, and the trolley in a manner that provides internal and external support.

[0031] The present invention is designed such that multiple support beams are set between the first outer template and the second outer template, and multiple lifting telescopic cylinders and multiple telescopic rods are respectively set between the inner template and the trolley.

[0032] This invention designs a displacement cylinder comprising a shell section, a base section, a central shaft section, a sleeve section, a support rod section, a top claw rod section, a return spring section, an electromagnet section, a connecting plate section, and a rotating wheel section II. A displacement body is provided at the end of the central shaft section, a thrust platform is provided in the middle of the central shaft section, and the lower end face of the shell section is connected to the upper end face of the base section. The lower end face of the base section is connected to the rotating wheel section II, and the inclined surface of the base section is connected to the inner end face of the connecting plate section. The inner wall end face of the shell section is connected to one end face of the support rod section. One end of the support rod is configured to connect with the peripheral side of the sleeve, and the cylinder and sleeve are respectively configured to be receptacle-type connected to the central shaft. The shifting body is configured to be threadedly connected to the sleeve, and the middle part of the push claw rod is configured to be through-connected to the middle part of the cylinder and the return spring, respectively. One end of the return spring is configured to be in contact with the inner end of the push claw rod, and the other end of the return spring is configured to be in contact with the inner wall of the cylinder. The inner end of the push claw rod is configured to be in contact with the peripheral side of the thrust table body, and the outer end of the push claw rod... The end is designed for receptacle connection with the electromagnet section, the electromagnet section is designed for connection with the inner template, and the cylindrical shell section is a circular tubular body with a through hole in the middle and a lifting ring at the end. The through hole in the cylindrical shell section is designed for connection with the top claw rod section, and the lifting ring in the cylindrical shell section is designed for connection with the crane hook. The base section is a trapezoidal block with a U-shaped groove on the lower end face, and the U-shaped groove in the base section is designed for connection with the rotating shaft located on the rotating wheel section II. The central shaft section is a circular rod-shaped body with a through hole at the end, and the sleeve section is a tubular body with threads on the inner wall. The support rod section is a rod-shaped body. Furthermore, the top claw rod is configured as an I-shaped rod with an inclined surface on the inner end and a receiving groove on the outer end. The inclined surface of the top claw rod is configured to be connected to the thrust table body in contact, and the receiving groove of the top claw rod is configured to be connected to the electromagnet part. The return spring part is configured as a column spring, and the electromagnet part is configured as a suction cup electromagnet. The overlapping plate part is configured as an L-shaped plate with an opening on the outer end, and the opening of the overlapping plate part is configured to be connected to the expansion bolt located on the bottom wall of the drainage culvert. The rotating wheel part II is configured as a circular disc, and the displacement body is configured as a threaded body. The thrust table body is configured as a conical frustum.

[0033] This invention designs a set of rotating support components consisting of a base portion and two rotating wheel portions II; a set of end support components consisting of a sleeve portion and four support rod portions; a set of top support components consisting of three top claw rod portions, three return spring portions, and three electromagnet portions; two overlapping plate portions disposed on the base portion; three sets of rotating support components disposed on the shell portion; two sets of end support components and multiple sets of top support components disposed between the central shaft portion and the shell portion; wherein the first electromagnet portion of one set of top support components is connected to plate portion II; the second electromagnet portion of one set of top support components is connected to plate portion IV; and the third electromagnet portion of one set of top support components is connected to plate portion VI.

[0034] The technical effects of the above two solutions are as follows: they realize the conversion of the thread force into a closing force on the inner template, improve the support position accuracy of the inner template, realize the closing of the main body of plate III and plate V, and facilitate the extraction of the inner template from the drainage culvert.

[0035] This invention designs a method for using a casting template device for airport drainage culverts. The steps are as follows: the outer template assembly and support beam realize the template-type casting and shaping of the bottom wall of the drainage culvert; the inner template realizes the template-type casting and shaping of the side walls and top walls of the drainage culvert; the inner shrinkage support component realizes the control of the expansion normal state and the closing and removal state of the inner template, realizing the extraction of the casting template located inside the drainage culvert and the removal of the casting template located outside the drainage culvert.

[0036] The technical effects of the above technical solution are as follows: it highlights the technical features of extracting the casting template located inside the drainage culvert and pulling out the casting template located outside the drainage culvert, and introduces its application in the technical field of casting template device usage method for airport drainage culverts.

[0037] The present invention comprises the following steps: trenching is carried out on the foundation of the airport drainage culvert to form a foundation pit; a layer of crushed stone is laid at the bottom of the foundation pit; raw materials for plain concrete are poured onto the crushed stone layer to form plain concrete block blanks; the plain concrete block blanks are cured to obtain plain concrete blocks; a first outer formwork and a second outer formwork are placed on the plain concrete blocks; the first outer formwork is installed on one side wall of the drainage culvert; the second outer formwork is installed on the other side wall of the drainage culvert; plate I is placed on the upper inner end face of the first outer formwork and the upper inner end face of the second outer formwork; plate I is connected to the first and second outer formworks using connecting bolts and nuts; the reinforcing steel skeleton of the bottom wall of the drainage culvert is placed below the inner end face of the plain concrete block and the first outer formwork. Between the lower inner end face of the second outer template, the raw material for the drainage culvert bottom wall is poured between the plain concrete block and the lower inner end face of the first and second outer templates. A U-shaped groove is made on the upper end face of the drainage culvert bottom wall to form the blank of the drainage culvert bottom wall. The blank of the drainage culvert bottom wall is cured to form the drainage culvert bottom wall. The trolley is flipped so that rotating wheel I is in the upper position. One end of the telescopic rod is connected to the inner side of plate II, plate III, plate V, and plate VI respectively via pins. Then the trolley is flipped in the opposite direction so that rotating wheel I is in the lower position. Plate IV is placed on the telescopic end of the lifting telescopic cylinder, and plate IV is connected to the telescopic end of the lifting telescopic cylinder via connecting bolts. Guide rails are placed on both sides of the centerline of the "["-shaped groove on the bottom wall of the drainage culvert. Rotating wheel I is placed into the guide rails, and the inner frame is pushed to place plates II, III, IV, V, and VI onto the upper end face of the bottom wall of the drainage culvert. By moving the guide rails, the centerline of plate IV is aligned with the centerline of the bottom wall of the drainage culvert, causing the lifting telescopic cylinder to extend, making the distance between plate IV and the bottom wall of the drainage culvert equal to the height of the drainage culvert. With the telescopic rod extended, the vertical sections of slabs II and III are perpendicular, and the vertical sections of slab V and VI are perpendicular. The distance between slab II and the first outer formwork, and the distance between slab VI and the second outer formwork, are equal to the thickness of the drainage culvert. The lower end faces of slab II and VI are placed on the bottom wall of the drainage culvert. The reinforcing steel cages for the side and top walls of the drainage culvert are placed on the first and second outer formwork and the slabs. Between sections II, III, IV, V, and VI, the raw materials for the drainage culvert are poured between the first and second outer templates and sections II, III, IV, V, and VI to form the blanks for the side and top walls of the drainage culvert. These blanks are then cured to complete the construction of the drainage culvert. After the drainage culvert is fabricated, the lifting telescopic cylinder is retracted, which in turn retracts the telescopic rod.The mechanism drives slabs II and III to close inwards on slab II, and slabs V and VI to close inwards on slab II, separating the horizontal sections of slab III, slab IV, and slab V from the top wall of the drainage culvert. It also separates the vertical sections of slabs II and III, the vertical section of slab V, and slab VI from the side walls of the drainage culvert. Pulling the inner frame section removes slabs II, III, IV, V, and VI from the drainage culvert, allowing the foundation pit of the drainage culvert to be filled.

[0038] The technical effect of the above technical solution is that it realizes the casting and molding operation of drainage box culvert with the lifting telescopic cylinder, telescopic rod and trolley as the main internal supporting components.

[0039] The present invention is designed with the following steps: Using a crane, when the cylindrical shell is placed on the "U"-shaped groove on the bottom wall of the drainage culvert, the center line of plate part IV is aligned with the center line of the bottom wall of the drainage culvert by moving the base part. The opening of the overlapping plate part is connected to the expansion bolt located on the bottom wall of the drainage culvert. Plate part II is placed on the first electromagnet part of one set of top support components, plate part IV is placed on the second electromagnet part of one set of top support components, and plate part VI is placed on the third electromagnet part of one set of top support components. The rotating handle is installed in the through hole of the central shaft part, causing the displacement body to rotate in the sleeve part, so that the inner end of the top claw rod part is located at the top of the thrust platform body. Plate II is in a horizontal position, making the vertical parts of Plate II and Plate III vertical, and the vertical parts of Plate V and Plate VI vertical. The electromagnet is energized, satisfying the space requirements for the construction of the side and top walls of the drainage culvert. After the drainage culvert is constructed, the displacement body rotates in the opposite direction in the sleeve, so that the inner end of the top claw rod is located at the root of the thrust platform. Plate II and Plate IV are folded with Plate III, and Plate VI and Plate IV are folded with Plate V. The opening of the overlapping plate is separated from the expansion bolts located on the bottom wall of the drainage culvert. The shell is pulled outward, and the rotating wheel II rotates on the bottom wall of the drainage culvert, removing the displacement cylinder from the drainage culvert.

[0040] The technical effect of the above technical solution is that it realizes the casting and molding operation of drainage box culvert with displacement cylinder as the main internal supporting component.

[0041] The present invention is designed with the following steps: when curing the blanks of the side wall and top wall of the drainage box culvert, the connecting bolts and nuts located between the plate part I and the first outer template and the second outer template are removed, and the plate part I is separated from the upper part of the inner end face of the first outer template and the inner end face of the second outer template, so that the upper part of the first outer template and the upper part of the second outer template are connected together by connecting bolts and nuts, forming a curing zone on the top wall of the drainage box culvert.

[0042] The technical effect of the above solution is that it creates a closed curing zone on the top wall of the drainage culvert, thereby improving the curing effect on the blanks of the side walls and top wall of the drainage culvert.

[0043] In this technical solution, the inner template and support beam are basic components and essential technical features of the invention. The first outer template, second outer template, lifting telescopic cylinder, telescopic rod, trolley, and displacement cylinder are functional components and features that achieve other technical effects of the invention. The design of these technical features, such as plate I, beam, plate II, plate III, plate IV, plate V, plate VI, vertical plate I, vertical plate II, inner frame, rotating wheel I, guide rail, cylinder shell, base, central shaft, sleeve, support rod, top claw rod, return spring, electromagnet, overlapping plate, rotating wheel II, displacement body, and thrust platform, are technical features that comply with the Patent Law and its implementing regulations.

[0044] In this technical solution, the key technical features are the outer formwork assembly, support beam, inner formwork, and inner shrinkage support component, which are used to extract the casting formwork inside the drainage culvert and to pull out the casting formwork outside the drainage culvert. In the technical field of casting formwork devices and methods for use in airport drainage culverts, this solution is novel, inventive, and practical. The terms used in this technical solution can be explained and understood using patent literature in this technical field. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of one of the first embodiments of the present invention, which is a casting formwork device for airport drainage culverts.

[0047] Figure 2 This is a schematic diagram of a second first embodiment of the present invention, which is a casting formwork device for airport drainage culverts.

[0048] Figure 3 This is a structural schematic diagram of the central shaft portion 83.

[0049] First outer formwork -1, Second outer formwork -2, Inner formwork -3, Support beam -4, Lifting telescopic cylinder -6, Telescopic rod -7, Trolley -9, Displacement cylinder -8, Drainage culvert bottom wall -10, Plain concrete block -20, Crushed stone layer -10, Slab I -41, Beam -42, Slab II -31, Slab III -32, Slab IV -33, Slab V -34, Slab VI -35, Vertical section I -99, Vertical plate section II -98, Inner frame section -97, Rotating wheel section I -96, Guide rail section -95, Cylinder shell section -81, Base section -82, Central shaft section -83, Sleeve section -84, Support rod section -85, Top claw rod section -86, Return spring section -87, Electromagnet section -88, Overlap plate section -89, Rotating wheel section II -80, Displacement body -831, Thrust table body -832. Implementation

[0050] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood to mean without dispensing the presence or addition of one or more other elements or combinations thereof.

[0051] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. If the processing conditions are not explicitly stated, please refer to the product manual or follow the conventional methods in the field.

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] A casting formwork device for airport drainage culverts. Figure 1 As one of the first embodiments of the present invention, this embodiment is described in detail with reference to the accompanying drawings. It includes a first outer template 1, a second outer template 2, an inner template 3, a support beam 4, a lifting telescopic cylinder 6, a telescopic rod 7, and a trolley 9. The inner template 3 and the support beam 4 are respectively arranged between the first outer template 1 and the second outer template 2. The trolley 9 is arranged in the inner template 3, and the lifting telescopic cylinder 6 is arranged between the trolley 9 and the inner template 3. The telescopic rod 7 is arranged between the lifting telescopic cylinder 6 and the trolley 9 and the inner template 3.

[0056] In this embodiment, the bottom wall 10 of the drainage culvert is configured as a cement mortar block with a [-shaped groove], and the middle part of the [-shaped groove] of the bottom wall 10 is connected to the trolley 9. The edge part of the [-shaped groove] of the bottom wall 10 is connected to the inner template 3. The outer side of one edge of the [-shaped groove] of the bottom wall 10 is connected to the first outer template 1. The outer side of the other edge of the [-shaped groove] of the bottom wall 10 is connected to the second outer template 2. The lower end face of the bottom wall 10 is connected to the upper end face of the plain concrete block 20. The lower end face of the plain concrete block 20 is connected to the crushed stone layer 10.

[0057] Its technical objective is to achieve the pre-forming of the bottom wall 10 of the drainage culvert.

[0058] In this embodiment, the first outer template 1 and the second outer template 2 are respectively configured as separate sheet-like bodies with hinges in the middle part, and the upper part of the inner end face of the first outer template 1 and the upper part of the inner end face of the second outer template 2 are respectively configured to be connected to the support beam 4. The lower part of the inner end face of the first outer template 1 and the lower part of the inner end face of the second outer template 2 are respectively configured to be distributed correspondingly to the inner template 3, and the lower end face of the first outer template 1 and the lower end face of the second outer template 2 are respectively configured to be connected to the plain concrete block 20. The lower part of the inner end face of the first outer template 1 and the lower part of the inner end face of the second outer template 2 are respectively configured to be connected to the bottom wall 10 of the drainage culvert.

[0059] The first outer template 1 and the second outer template 2 form a support connection point for the inner template 3 and the support beam 4. The first outer template 1 and the second outer template 2 realize the connection with the inner template 3, the connection with the support beam 4, the connection with the bottom wall 10 of the drainage box culvert, and the connection with the plain concrete block 20. Its technical purpose is to be used as a component for the template of the outer side wall of the drainage box culvert.

[0060] In this embodiment, the support beam 4 is configured as a plate part I 41 and a beam part 42, and the upper end of the horizontal part of the plate part I 41 is respectively configured to be connected to the end of the beam part 42. The vertical part of one of the plate parts I 41 located on the beam part 42 is configured to be connected to the first outer template 1, and the vertical part of the other plate part I 41 located on the beam part 42 is configured to be connected to the second outer template 2. The plate part I 41 is configured as an L-shaped sheet and the beam part 42 is configured as a strip.

[0061] The support beam 4 forms a support connection point for the first outer template 1 and the second outer template 2. The plate part I 41 is connected to the first outer template 1 and the second outer template 2. The beam part 42 provides support connection for the plate part I 41. Its technical purpose is to serve as a component for providing spaced support between the first outer template 1 and the second outer template 2.

[0062] In this embodiment, the inner template 3 is configured to include plate part II 31, plate part III 32, plate part IV 33, plate part V 34, and plate part VI 35. The inner end face of plate part II 31 is configured to be connected to the vertical end face of plate part III 32 via a hinge. The horizontal end face of plate part III 32 is configured to be connected to one end face of plate part IV 33 via a hinge, and the other end face of plate part IV 33 is configured to be connected to the horizontal end face of plate part V 34 via a hinge. The vertical end face of plate part V 34 is configured to be connected to the inner end face of plate part VI 35 via a hinge. The inner side face of plate part IV 33 is configured to be connected to the lifting telescopic cylinder 6. The inner side face of plate part II 31 and plate part III 32 are also configured to be connected to the vertical end face of plate part III 33 via a hinge. The inner side of plate 32, the inner side of plate V34, and the inner side of plate VI35 are respectively connected to the telescopic rod 7 via pins. The outer side of plate II31 and the outer side of the vertical part of plate III32 are respectively distributed corresponding to the first outer template 1. The outer side of the vertical part of plate V34 and the outer side of plate VI35 are respectively distributed corresponding to the second outer template 2. Plate II31 and plate VI35 are respectively set as flat sheet bodies. Plate III32 and plate V34 are respectively set as L-shaped sheet bodies. Plate IV33 is set as a flat sheet body with a through hole. The through hole of plate IV33 is connected to the connecting bolt located on the lifting telescopic cylinder 6.

[0063] The inner template 3 forms a support connection point for the first outer template 1, the second outer template 2, the lifting telescopic cylinder 6, and the telescopic rod 7. The connection with the first outer template 1 is achieved by plate part II 31 and plate part III 32, the connection with the second outer template 2 is achieved by plate part V 34 and plate part VI 35, the connection with the lifting telescopic cylinder 6 is achieved by plate part IV 33, and the connection with the telescopic rod 7 is achieved by plate part II 31, plate part III 32, plate part V 34, and plate part VI 35. Its technical purpose is to be used as a template for the inner wall of a drainage culvert.

[0064] In this embodiment, the lifting telescopic cylinder 6 is configured as an electric push rod with a threaded hole at the telescopic end, and one end of the lifting telescopic cylinder 6 is configured to be connected to the trolley 9, the other end of the lifting telescopic cylinder 6 is configured to be connected to the inner template 3, and the threaded hole of the lifting telescopic cylinder 6 is configured to be connected to the connecting bolt located on the inner template 3.

[0065] The lifting telescopic cylinder 6 forms a support connection point for the inner template 3 and the trolley 9. The lifting telescopic cylinder 6 realizes the connection with the inner template 3 and the trolley 9. Its technical purpose is to be used as a component to control the unfolding and retracting state of the inner template 3.

[0066] In this embodiment, the telescopic rod 7 is configured as a two-section sliding arm, and one end of the telescopic rod 7 is configured to be connected to the trolley 9, while the other end of the telescopic rod 7 is configured to be connected to the inner template 3 via a pin.

[0067] The telescopic rod 7 forms a support connection point for the inner template 3 and the trolley 9. The telescopic rod 7 connects the inner template 3 and the trolley 9. Its technical purpose is to serve as a component that guides the inner template 3 in its unfolded and retracted states.

[0068] In this embodiment, the trolley 9 is configured to include a vertical plate section I 99, a vertical plate section II 98, an inner frame section 97, a rotating wheel section I 96, and a guide rail section 95. The inner side of the vertical plate section I 99 is connected to the lower side of one of the inner frame sections 97, and the inner side of the vertical plate section II 98 is connected to the lower side of the other side of the inner frame section 97. The lower end face of the vertical plate section I 99 and the lower end face of the vertical plate section II 98 are respectively connected to the rotating wheel section I 96. The rotating wheel section I 96 is connected to the guide rail section 95 in contact. The upper end face of the vertical plate section I 99 and the upper end face of the vertical plate section II 98 are respectively connected to the lifting telescopic cylinder 6. The outer side face of the vertical plate section I 99 and the outer side face of the vertical plate section II 98 are respectively connected to the lifting telescopic cylinder 6. The inner frame 97 is configured to be connected to the telescopic rod 7, and the upper side of the inner frame 97 is configured to be connected to the lifting telescopic cylinder 6. The vertical plate I 99 and vertical plate II 98 are respectively configured as rectangular beams with a U-shaped groove on the lower end face, and the inner frame 97 is configured as a rectangular frame with a <-shaped vertical rod. The U-shaped vertical rod corner of the inner frame 97 and the lower horizontal rod end of the inner frame 97 are respectively configured to be connected to the vertical plate I 99 and vertical plate II 98, and the upper horizontal rod end of the inner frame 97 is configured to be connected to the lifting telescopic cylinder 6. The rotating wheel I 96 is configured as a circular disc and is configured to be connected to the U-shaped groove of the vertical plate I 99 and the U-shaped groove of the vertical plate II 98 through a rotating shaft. The guide rail 95 is configured as a U-shaped channel steel.

[0069] The trolley 9 forms a support connection point for the lifting telescopic cylinder 6 and the telescopic rod 7. The vertical plate part I 99, the vertical plate part II 98 and the inner frame part 97 are connected to the lifting telescopic cylinder 6, and the vertical plate part I 99 and the vertical plate part II 98 are connected to the telescopic rod 7. The rotating wheel part I 96 and the guide rail part 95 are used to connect and support the vertical plate part I 99, the vertical plate part II 98 and the inner frame part 97. Its technical purpose is to serve as a support carrier for the lifting telescopic cylinder 6 and the telescopic rod 7.

[0070] In this embodiment, the first outer template 1, the second outer template 2, and the inner template 3 are distributed with the support beams 4, the lifting telescopic cylinders 6, the telescopic rods 7, and the trolley 9 in an internal and external support manner. Multiple support beams 4 are arranged between the first outer template 1 and the second outer template 2, and multiple lifting telescopic cylinders 6 and multiple telescopic rods 7 are respectively arranged between the inner template 3 and the trolley 9.

[0071] The present invention will be further described below with reference to embodiments. These embodiments are intended to illustrate the present invention and not to further limit the present invention.

[0072] A method for using a casting formwork device for an airport drainage culvert, one of the first embodiments of the present invention, includes the following steps: A trench is dug on the foundation of the airport drainage culvert to form a foundation pit; a layer of crushed stone 10 is laid at the bottom of the foundation pit; plain concrete material is poured onto the crushed stone layer 10 to form a plain concrete block 20; the plain concrete block 20 is cured to obtain the plain concrete block 20; a first outer formwork 1 and a second outer formwork 2 are placed on the plain concrete block 20; the first outer formwork 1 is installed on one side wall of the drainage culvert; the second outer formwork 2 is installed on the other side wall of the drainage culvert; and the plate part I 41 is placed on the first outer formwork. The upper part of the inner end face of the first outer template 1 and the upper part of the inner end face of the second outer template 2 are connected together with the plate part I41 to the first outer template 1 and the second outer template 2 by connecting bolts and nuts. The steel reinforcement cage of the drainage box culvert bottom wall 10 is placed between the plain concrete block 20 and the lower part of the inner end face of the first outer template 1 and the lower part of the inner end face of the second outer template 2. The raw material of the drainage box culvert bottom wall 10 is poured between the plain concrete block 20 and the lower part of the inner end face of the first outer template 1 and the lower part of the inner end face of the second outer template 2. An "I" shaped groove is made on the upper end face of the drainage box culvert bottom wall 10 to obtain the blank of the drainage box culvert bottom wall 10. The blank of the drainage box culvert bottom wall 10 is cured to obtain the drainage box culvert bottom wall 10.

[0073] Tilting the trolley 9 so that the rotating wheel part I 96 is in the upper position, connecting one end of the telescopic rod 7 to the inner side of plate part II 31, the inner side of plate part III 32, the inner side of plate part V 34, and the inner side of plate part VI 35 respectively via pins, then flipping the trolley 9 in the opposite direction so that the rotating wheel part I 96 is in the lower position, placing plate part IV 33 into the telescopic end of the lifting telescopic cylinder 6, and connecting plate part IV 33 to the telescopic end of the lifting telescopic cylinder 6 with connecting bolts.

[0074] Guide rails 95 are placed on both sides of the centerline of the "["-shaped groove in the bottom wall of the drainage culvert 10. Rotating wheel I 96 is placed in the guide rails 95, and the inner frame 97 is pushed to place plates II 31, III 32, IV 33, V 34, and VI 35 onto the upper end face of the bottom wall of the drainage culvert 10. By moving the guide rails 95, the centerline of plate IV 33 is aligned with the centerline of the bottom wall of the drainage culvert 10, causing the lifting telescopic cylinder 6 to extend, making the distance between plate IV 33 and the bottom wall of the drainage culvert 10 equal to the height of the drainage culvert. With the telescopic rod 7 extended, the vertical sections of plate II 31 and plate III 32 vertical, and the vertical sections of plate V 34 and plate VI 35 vertical, the distance between plate II 31 and the first outer template 1, and the distance between plate VI 35 and the second outer template 2 equal to the thickness of the drainage culvert, the lower end faces of plate II 31 and plate VI 35 are placed on the bottom wall 10 of the drainage culvert.

[0075] The reinforcing steel frame for the sidewalls and top wall of the drainage culvert is placed between the first outer formwork 1 and the second outer formwork 2 and slabs II 31, III 32, IV 33, V 34, and VI 35. The raw material for the drainage culvert is poured between the first outer formwork 1 and the second outer formwork 2 and slabs II 31, III 32, IV 33, V 34, and VI 35 to obtain the blanks for the sidewalls and top wall of the drainage culvert. These blanks are then cured to obtain the final drainage culvert sidewalls and top wall.

[0076] After the drainage culvert is constructed, the lifting telescopic cylinder 6 is in the retracted state, which drives the telescopic rod 7 to retract as well. This causes plate part II 31 and plate part III 32 to close inward on plate part II 31, and also causes plate part V 34 and plate part VI 35 to close inward on plate part II 31. This separates the horizontal parts of plate part III 32, plate part IV 33, and plate part V 34 from the top wall of the drainage culvert, and separates the vertical parts of plate part II 31, plate part III 32, plate part V 34, and plate part VI 35 from the side wall of the drainage culvert. The inner frame part 97 is then pulled and pushed to remove plate part II 31, plate part III 32, plate part IV 33, plate part V 34, and plate part VI 35 from the drainage culvert, and the foundation pit of the drainage culvert is then filled.

[0077] In this embodiment, the steps are as follows: when curing the blanks of the side wall and top wall of the drainage box culvert, the connecting bolts and nuts located between the plate part I41 and the first outer template 1 and the second outer template 2 are removed, and the plate part I41 is separated from the upper part of the inner end face of the first outer template 1 and the inner end face of the second outer template 2, so that the upper part of the first outer template 1 and the upper part of the second outer template 2 are connected together by connecting bolts and nuts, forming a curing zone on the top wall of the drainage box culvert.

[0078] A casting formwork device for airport drainage culverts. Figure 2This is the second embodiment of the first embodiment of the present invention. The embodiment is described in detail with reference to the accompanying drawings. It includes a displacement cylinder 8, which comprises a shell portion 81, a base portion 82, a central shaft portion 83, a sleeve portion 84, a support rod portion 85, a top claw rod portion 86, a return spring portion 87, an electromagnet portion 88, a connecting plate portion 89, and a rotating wheel portion II 80. A displacement body 831 is provided at the end of the central shaft portion 83, and a thrust platform 832 is provided in the middle of the central shaft portion 83. The lower end face of the shell portion 81 is connected to the upper end face of the base portion 82, the lower end face of the base portion 82 is connected to the rotating wheel portion II 80, and the inclined portion of the base portion 82 is connected to the inner end of the connecting plate portion 89. The inner wall end of the cylindrical shell portion 81 is configured to connect with one end of the support rod portion 85, and the other end of the support rod portion 85 is configured to connect with the peripheral side portion of the sleeve portion 84. The cylindrical shell portion 81 and the sleeve portion 84 are respectively configured to be receptively connected to the central shaft portion 83. The shifting body 831 is configured to be threadedly connected to the sleeve portion 84. The middle portion of the top claw rod portion 86 is configured to be through-connected to the middle portion of the cylindrical shell portion 81 and the return spring portion 87. One end of the return spring portion 87 is configured to contact the inner end of the top claw rod portion 86, and the other end of the return spring portion 87 is configured to contact the inner wall of the cylindrical shell portion 81. The inner end of the top claw rod portion 86 is configured to... The outer end of the pusher shank 86 is configured to be connected to the peripheral side of the thrust platform 832 and to be received by the electromagnet 88. The electromagnet 88 is configured to be connected to the inner template 3. The cylindrical shell 81 is a circular tubular body with a through hole in the middle and a lifting ring at the end. The through hole of the cylindrical shell 81 is configured to be connected to the pusher shank 86 and the lifting ring of the cylindrical shell 81 is configured to be connected to the crane hook. The base 82 is a trapezoidal block with a U-shaped groove on the lower end face and the U-shaped groove of the base 82 is configured to be connected to the rotating shaft located on the rotating wheel 80. The central shaft 83 is a circular rod with a through hole at the end and the sleeve 84 is a tubular body with a threaded inner wall. The support rod part 85 is configured as a rod-shaped body and the top claw rod part 86 is configured as an I-shaped rod with an inclined surface on the inner end and a receiving groove on the outer end. The inclined surface of the top claw rod part 86 is configured to be connected to the thrust table body 832 in contact, and the receiving groove of the top claw rod part 86 is configured to be connected to the electromagnet part 88. The return spring part 87 is configured as a column spring and the electromagnet part 88 is configured as a suction cup electromagnet. The overlapping plate part 89 is configured as an L-shaped plate with an opening on the outer end, and the opening of the overlapping plate part 89 is configured to be connected to the expansion bolt located on the bottom wall 10 of the drainage culvert. The rotating wheel part II 80 is configured as a circular disc and the displacement body 831 is configured as a threaded body. The thrust table body 832 is configured as a conical frustum.

[0079] The displacement cylinder 8 forms a support connection point for the inner template 3. The electromagnet part 88 connects the inner template 3. The cylinder shell part 81, base part 82, central shaft part 83, sleeve part 84, support rod part 85, top claw rod part 86, return spring part 87, overlapping plate part 89, rotating wheel part II 80, displacement body 831 and thrust platform body 832 drive the electromagnet part 88 to move inward and outward. Its technical purpose is to serve as a support carrier for the inner template 3.

[0080] In this embodiment, a base portion 82 and two rotating wheel portions II 80 are configured to form a set of rotating support components, a sleeve portion 84 and four support rod portions 85 are configured to form a set of end support components, three top claw rod portions 86, three return spring portions 87 and three electromagnet portions 88 are configured to form a set of top support components, two overlapping plate portions 89 are disposed on the base portion 82, three sets of rotating support components are disposed on the shell portion 81, two sets of end support components and multiple sets of top support components are respectively disposed between the central shaft portion 83 and the shell portion 81, wherein the first electromagnet portion 88 in one set of top support components is configured to be connected to plate portion II 31, the second electromagnet portion 88 in one set of top support components is configured to be connected to plate portion IV 33, and the third electromagnet portion 88 in one set of top support components is configured to be connected to plate portion VI 35.

[0081] Its technical purpose is to serve as a component for supporting plate part II 31, plate part IV 33 and plate part VI 35.

[0082] A method for using a casting template device for airport drainage culverts, the second of the first embodiments of the present invention, comprises the following steps: Using a crane, when the cylindrical shell portion 81 is placed on the [-shaped groove] of the bottom wall 10 of the drainage culvert, the center line of the plate portion IV 33 is aligned with the center line of the bottom wall 10 of the drainage culvert by moving the base portion 82; the opening of the overlapping plate portion 89 is connected to the expansion bolt located on the bottom wall 10 of the drainage culvert; plate portion II 31 is placed on the first electromagnet portion 88 of one set of top support components; plate portion IV 33 is placed on the second electromagnet portion 88 of one set of top support components; plate portion VI 35 is placed on the third electromagnet portion 88 of one set of top support components; the rotating handle is installed in the through hole of the central shaft portion 83, causing the displacement body 831 to rotate in the sleeve portion 84, so that the inner end of the top claw rod portion 86 is located at the push... The top of the force platform 832 is positioned so that plate II 31 is horizontally level, the vertical parts of plate II 31 and plate III 32 are vertically aligned, the vertical parts of plate V 34 and plate VI 35 are vertically aligned, and the electromagnet 88 is energized. This satisfies the space requirements for the construction of the drainage culvert's side and top walls. After the drainage culvert is constructed, the displacement body 831 rotates in the opposite direction within the sleeve 84, causing the top claw rod 86 to... The inner end is located at the root of the thrust platform body 832, causing plate part II 31 and plate part IV 33 to be folded with plate part III 32, and plate part VI 35 and plate part IV 33 to be folded with plate part V 34. The opening of the overlapping plate part 89 is separated from the expansion bolts located on the bottom wall 10 of the drainage box culvert, and the shell part 81 is pulled outward. The rotating wheel part II 80 rotates on the bottom wall 10 of the drainage box culvert, and the displacement cylinder 8 is taken out of the drainage box culvert.

[0083] In verifying this invention, the inventors abandoned the existing technical features of using open-cut trenching and employing wooden formwork and scaffolding for formwork support. They first proposed the technical features of extracting the formwork inside the drainage culvert and pulling out the formwork outside the drainage culvert. This resulted in the first unexpected technical effect: optimizing the drainage culvert pouring operation and shortening the construction period; the second unexpected technical effect: optimizing the setting of the drainage culvert pouring operation site; the third unexpected technical effect: enabling the use of slab sections as formwork, facilitating formwork installation; the fourth unexpected technical effect: enabling the internal vehicle body to provide expansion and contraction support for the internal formwork 3, improving the stability of the internal formwork 3; and the fifth unexpected technical effect: enabling the internal beam body to provide expansion and contraction support for the internal formwork 3, improving the positional accuracy of the internal formwork 3.

[0084] In the second embodiment of the present invention, the outer formwork assembly, support beam 4, inner formwork 3, and inner shrinkage support component are interconnected by means of extracting the casting formwork located inside the drainage culvert and pulling out the casting formwork located outside the drainage culvert.

[0085] In this embodiment, the inner shrinkage support component is connected to the outer template assembly, support beam 4, and inner template 3 in a manner that controls the expansion in the normal state and the closing and removal state.

[0086] In this embodiment, the outer template component is configured to include a first outer template 1 and a second outer template 2.

[0087] In this embodiment, the internal contraction support component is configured to include a lifting telescopic cylinder 6, a telescopic rod 7, and a trolley 9, or it is configured to be a displacement cylinder 8.

[0088] The second embodiment of the present invention is based on the first embodiment.

[0089] In the second embodiment of the present invention, the steps are as follows: the bottom wall 10 of the drainage culvert is formed by template casting using the outer template assembly and the support beam 4; the side walls and top walls of the drainage culvert are formed by template casting using the inner template 3; the inner shrinkage support component controls the expansion state and the closing and removal state of the inner template 3, thereby enabling the extraction of the casting template located inside the drainage culvert and the removal of the casting template located outside the drainage culvert.

[0090] The second embodiment of the present invention is based on the first embodiment.

[0091] This invention has the following characteristics:

[0092] 1. Due to the design of the outer formwork assembly, support beam 4, inner formwork 3, and inner shrinkage support component, the bottom wall 10 of the drainage culvert is formed by formwork casting through the outer formwork assembly and support beam 4. The side walls and top walls of the drainage culvert are formed by formwork casting through the inner formwork 3. The inner shrinkage support component controls the expansion and closure states of the inner formwork 3. It enables the extraction of the casting formwork inside the drainage culvert and the removal of the casting formwork outside the drainage culvert. This solves the technical problem of using wooden formwork and scaffolding for formwork support when trench excavation is carried out by open excavation, thus improving the casting efficiency of the airport drainage culvert.

[0093] 2. Due to the design of the first outer template 1 and the second outer template 2, the bottom wall 10 of the drainage culvert can be cast and shaped in a local area.

[0094] 3. Due to the design of the lifting telescopic cylinder 6, the telescopic rod 7 and the trolley 9, the force generated by the lifting telescopic cylinder 6 is used to control the state of the inner template 3.

[0095] 4. Due to the design of the displacement cylinder 8, the forces generated by the central shaft part 83, sleeve part 84, top claw rod part 86, return spring part 87 and electromagnet part 88 are used to control the state of the inner template 3.

[0096] 5. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this invention, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of the numerical range has achieved very good technical effect.

[0097] 6. Due to the design of the technical features of this invention, and the combined effect of the individual and collective technical features, experiments have shown that the performance indicators of this invention are at least 1.7 times that of existing performance indicators, and the invention has been evaluated to have good market value.

[0098] Other technical features that connect the outer formwork assembly, support beam 4, inner formwork 3, and inner shrinkage support component to the formwork for pulling out the formwork inside the drainage culvert and the formwork for pulling out the formwork outside the drainage culvert are also embodiments of the present invention. Furthermore, the technical features of the above embodiments can be combined in any way. In order to meet the requirements of the Patent Law, the Implementing Regulations of the Patent Law, and the Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0099] The above embodiments are merely one implementation of the casting template device and method for airport drainage culverts provided by the present invention. Other modifications to the solution provided by the present invention, additions or reductions of components or steps, or application of the present invention to other technical fields similar to the present invention, all fall within the protection scope of the present invention.

Claims

1. A casting formwork device for airport drainage culverts, characterized in that: It includes an outer formwork assembly placed in the foundation pit of the drainage culvert, a support beam (4) set in the outer formwork assembly, an inner formwork (3) set in the outer formwork assembly, and an inner shrinkage support component set in the inner formwork (3). The outer template component is configured to include a first outer template (1) and a second outer template (2). The internal contraction support component is configured as a displacement cylinder (8). The displacement cylinder (8) is configured to include a shell section (81), a base section (82), a central shaft section (83), a sleeve section (84), a support rod section (85), a top claw rod section (86), a return spring section (87), an electromagnet section (88), a connecting plate section (89), and a rotating wheel section II 80. A displacement body (831) is provided at the end of the central shaft section (83), a thrust platform (832) is provided in the middle of the central shaft section (83), and the lower end face of the shell section (81) is connected to the upper end face of the base section (82). The lower end face of the base section (82) is connected to the rotating wheel section II 80, and the inclined surface of the base section (82) is connected to the inner end face of the connecting plate section (89). The inner wall end of 81) is configured to connect with one end of the support rod (85), the other end of the support rod (85) is configured to connect with the peripheral side of the sleeve (84), and the cylinder shell (81) and the sleeve (84) are respectively configured to be receptively connected to the central shaft (83). The shifting body (831) is configured to be threadedly connected to the sleeve (84), and the middle part of the top claw rod (86) is configured to be through-connected to the middle part of the cylinder shell (81) and the return spring (87) respectively. One end of the return spring (87) is configured to be contact-connected to the inner end of the top claw rod (86), and the other end of the return spring (87) is configured to be contact-connected to the inner wall of the cylinder shell (81). The inner end of the top claw rod (86) is configured to contact the peripheral side of the thrust platform body (832), and the outer end of the top claw rod (86) is configured to be received by the electromagnet part (88). The electromagnet part (88) is configured to be connected to the inner template (3). The cylindrical shell part (81) is configured to be a circular tubular body with a through hole in the middle and a lifting ring at the end. The through hole in the cylindrical shell part (81) is configured to be connected to the top claw rod part (86), and the lifting ring in the cylindrical shell part (81) is configured to be connected to the crane hook. The base part (82) is configured to be a trapezoidal block with a U-shaped groove on the lower end face, and the U-shaped groove in the base part (82) is configured to be connected to the rotating shaft located on the rotating wheel part II 80. The central shaft part (83) is configured to have a U-shaped groove at the end. A circular rod-shaped body with a through hole and a sleeve part (84) is a tubular body with a threaded inner wall. A support rod part (85) is a rod-shaped body and a top claw rod part (86) is an I-shaped rod-shaped body with an inclined surface on the inner end and a receiving groove on the outer end. The inclined surface of the top claw rod part (86) is configured to be in contact with the thrust platform body (832) and the receiving groove of the top claw rod part (86) is configured to be connected with the electromagnet part (88). A return spring part (87) is configured as a column spring and an electromagnet part (88) is configured as a suction cup electromagnet. A lap plate part (89) is configured as an L-shaped plate-shaped body with an opening on the outer end and the opening of the lap plate part (89) is configured to be connected with an expansion bolt located on the bottom wall (10) of the drainage culvert.The rotating wheel part II 80 is configured as a circular disc, and the shifting body (831) is configured as a threaded body; the thrust platform body (832) is configured as a conical frustum.

2. The casting formwork device for airport drainage culverts according to claim 1, characterized in that: The outer formwork assembly, support beam (4), inner formwork (3), and inner shrinkage support components are interconnected by pulling out the formwork inside the drainage culvert and pulling out the formwork outside the drainage culvert.

3. The casting formwork device for airport drainage culverts according to claim 2, characterized in that: The inner shrinkage support component is connected to the outer template assembly, support beam (4) and inner template (3) in a way that controls the expansion normal state and the closing and removal state.

4. The casting formwork device for airport drainage culverts according to claim 1, characterized in that: A base part (82) and two rotating wheel parts II 80 are configured to form a set of rotating support components, a sleeve part (84) and four support rod parts (85) are configured to form a set of end support components, three top claw rod parts (86), three return spring parts (87) and three electromagnet parts (88) are configured to form a set of top support components, two overlapping plate parts (89) are provided on the base part (82), three sets of rotating support components are provided on the shell part (81), two sets of end support components and multiple sets of top support components are respectively provided between the central shaft part (83) and the shell part (81), wherein the first electromagnet part (88) of one set of top support components is configured to be connected to plate part II (31), the second electromagnet part (88) of one set of top support components is configured to be connected to plate part IV (33), and the third electromagnet part (88) of one set of top support components is configured to be connected to plate part VI (35).

5. A method of using a casting formwork device for airport drainage culverts according to claim 4, characterized in that: It includes the following steps: the bottom wall (10) of the drainage box culvert is formed by template casting using the outer template assembly and support beam (4); the side wall and top wall of the drainage box culvert are formed by template casting using the inner template (3); the expansion normal state and the closing and removal state of the inner template (3) are controlled by the inner shrinkage support component; and the casting template located inside the drainage box culvert is extracted and the casting template located outside the drainage box culvert is pulled out.

6. The method of using the casting formwork device according to claim 5, characterized in that: The steps include: using a crane, when the shell part (81) is placed on the U-shaped groove of the bottom wall (10) of the drainage culvert, by moving the base part (82), the center line of the plate part IV (33) is aligned with the center line of the bottom wall (10) of the drainage culvert; the opening of the overlapping plate part (89) is connected to the expansion bolts located on the bottom wall (10) of the drainage culvert; and the plate part II (31) is placed on the first electromagnet part (88) of one of the top support components. Place plate part IV (33) on the second electromagnet part (88) of one set of top support components, place plate part VI (35) on the third electromagnet part (88) of one set of top support components, install the rotating handle in the through hole of the central shaft part (83), and rotate the displacement body (831) in the sleeve part (84) so ​​that the inner end of the top claw rod part (86) is located at the top of the thrust table body (832), and place plate part II (31) in the horizontal position. To a horizontal position, the vertical parts of plate II (31) and plate III (32) are in a vertical position, the vertical parts of plate V (34) and plate VI (35) are in a vertical position, and the electromagnet part (88) is in an energized state, satisfying the space requirements for the construction of the side and top walls of the drainage box culvert. After the construction of the drainage box culvert is completed, the displacement body (831) is rotated in the opposite direction in the sleeve part (84), so that the inner end of the top claw rod part (86) is located at the thrust platform body (832). At the root of the ), fold plate part II (31) and plate part IV (33) with plate part III (32), fold plate part VI (35) and plate part IV (33) with plate part V (34), separate the opening of the overlapping plate part (89) from the expansion bolt located on the bottom wall (10) of the drainage culvert, pull the shell part (81) outward, rotate the wheel part II (80) on the bottom wall (10) of the drainage culvert, and take the displacement cylinder (8) out of the drainage culvert.

Images