Self-propelled culvert concrete construction formwork device and construction method

Abstract

This invention discloses a self-propelled culvert concrete construction formwork device and construction method. The construction formwork includes an inner formwork assembly, an inner formwork moving mechanism, an outer formwork assembly, an outer formwork moving mechanism, and a controller. The inner formwork assembly is arranged around the outer periphery of the inner formwork moving mechanism, and the outer formwork assembly is arranged around the outer periphery of the inner formwork assembly. The inner and outer formwork assemblies form a portal frame by inner and outer rings, and the gap between them is used for pouring concrete. The inner formwork moving mechanism is used to move and adjust the position of the inner formwork assembly, and the outer formwork moving mechanism is used to move and adjust the position of the outer formwork assembly. The controller controls the movement of the inner and outer formwork moving mechanisms. This invention improves the adaptability to culverts of different sizes and construction efficiency by adjusting the inner and outer formwork assemblies through mutual movement of the outer and inner formwork moving mechanisms.

Description

Technical Field

[0001] This invention belongs to the technical field of culvert construction equipment, specifically relating to a self-propelled culvert concrete construction formwork device and construction method. Background Technology

[0002] In highway and railway culvert construction, concrete pouring is a critical process, requiring high stability, adjustability, and ease of movement from the formwork system. Traditional formwork systems often employ modular or simple trolley-type designs, which suffer from low installation efficiency, inconvenient dimensional adjustments, poor positioning accuracy, and low mechanization levels, making them unsuitable for complex cross-sections and high-efficiency construction. Therefore, a highly integrated, flexible, and rapidly assembleable culvert construction formwork device is needed. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a self-propelled culvert concrete construction formwork device and construction method, which can adjust the size with multiple degrees of freedom and is applicable to the construction of culverts of various specifications.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This invention provides a self-propelled culvert concrete construction formwork device, comprising: The inner mold assembly includes an inner mold moving plate, an inner mold top fixed template, and an inner mold top movable template. A pair of inner mold moving plates are arranged laterally at intervals. The inner mold top fixed template is located at the upper end of the pair of inner mold moving plates. The inner mold top movable template is arranged on both sides of the inner mold top fixed template. The inner template moving mechanism includes a track, an inner template support frame, an inner template moving and lifting assembly, an inner template width adjusting assembly, and a retracting cylinder. A pair of the track are arranged laterally at intervals. A pair of laterally at intervals are respectively arranged at both ends of the longitudinal direction of the inner template support frame. The bottoms of the pair of laterally at intervals are respectively slidably arranged on the pair of track. At least one pair of longitudinally at intervals are arranged on both sides of the inner template support frame. One end of the inner template width adjusting assembly is connected to the inner template moving plate. The upper end of the inner template support frame is connected to the inner template top fixed template. The retracting cylinder is arranged at both ends of the inner template top fixed template. The two ends of the retracting cylinder are respectively connected to the inner template top fixed template and the inner template top moving template. An outer template assembly includes an outer template, wherein a pair of the outer templates are respectively located on the lateral outer periphery of a pair of inner template moving plates; The outer template moving mechanism includes an outer template moving and lifting assembly, an outer template flat push cylinder, an outer template support frame, and a top support frame. At least one pair of outer template support frames are arranged at longitudinal intervals along the outer periphery of each outer template. The lower end of each outer template support frame is connected to the outer template moving and lifting assembly, and the upper end of each outer template support frame is slidably connected to the top support frame. The outer template support frame and the top support frame are connected through the outer template flat push cylinder.

[0005] Furthermore, the inner template assembly also includes a sealing telescopic plate, the lower end of the inner mold moving plate is connected to the sealing telescopic plate, the inner template moving mechanism also includes a sealing plate lifting assembly, the sealing plate lifting assembly is respectively provided at both longitudinal ends of the inner mold moving plate, one end of the sealing plate lifting assembly is connected to the inner mold moving plate, and the other end is connected to the sealing telescopic plate.

[0006] Furthermore, the inner mold moving and lifting assembly includes a drive wheel set, a drive wheel sleeve, a drive wheel slide bar, and an inner mold lifting cylinder. The drive wheel set is slidably mounted on the track. The drive wheel slide bar is slidably mounted inside the drive wheel sleeve. The outer periphery of the drive wheel sleeve is connected to the lower end of the inner mold support frame. The lower end of the drive wheel slide bar is connected to the drive wheel set. The two ends of the inner mold lifting cylinder are respectively connected to the upper end of the inner mold support frame and the upper end of the drive wheel slide bar. The inner mold width adjusting assembly includes a screw, a nut, and a reducer. The reducer is mounted on the inner mold support frame. The nut is slidably connected to the inner mold support frame. The screw is screwed into the nut. One end of the screw is connected to the inner mold moving plate. The reducer drives the nut to rotate.

[0007] Furthermore, the inner template moving mechanism also includes a lifting wheel assembly, which is slidably nested on both sides of the track and connected to the drive wheel assembly.

[0008] Furthermore, the drive wheel assembly includes a drive motor, a drive wheel, and a drive frame. The drive wheel is mounted on the track, and the drive wheel is slidably sleeved within the drive frame. The drive motor is mounted on the drive frame to drive the drive wheel to rotate, and the drive frame is connected to the drive wheel slide bar. The lifting wheel assembly includes a connecting plate and a sliding wheel. A pair of connecting plates are laterally spaced and both are connected within the drive frame. The lower end of each connecting plate is slidably connected to the sliding wheel, and a pair of sliding wheels are slidably nested on both sides of the track.

[0009] Furthermore, the sealing plate lifting assembly includes a fixed sliding sleeve, a sliding column, and a bottom mold lifting cylinder. The fixed sliding sleeve is connected to the end of the inner mold moving plate, the sliding column is slidably sleeved in the fixed sliding sleeve, the lower end of the sliding column is connected to the sealing telescopic plate, and the two ends of the bottom mold lifting cylinder are respectively connected to the upper ends of the inner mold moving plate and the sliding column.

[0010] Furthermore, the outer template moving mechanism also includes an outer template slope lifting assembly. The outer template slope lifting assembly is connected between the longitudinal ends of the top support frame and the inner template support frame. The outer template slope lifting assembly includes a vertical slide tube, a vertical slide bar, and a vertical push cylinder. The lower end of the vertical slide tube is connected to the inner template support frame. The vertical slide bar is slidably sleeved inside the vertical slide tube. The upper end of the vertical slide bar extends out of the vertical slide tube and is connected to the top support frame. The vertical push cylinder is disposed on the top support frame and one end is connected to the vertical slide tube.

[0011] Furthermore, the top support frame includes a positioning bar, a crossbeam, and a smooth cylinder. A crossbeam is provided on each of the two horizontally spaced outer mold support frames. The upper end of the crossbeam is connected to at least one pair of horizontally spaced positioning bars. The vertical push cylinder is provided on the positioning bar. The two ends of the outer mold flat push cylinder are respectively connected to the crossbeam and the smooth cylinder.

[0012] Furthermore, the outer mold moving and lifting assembly includes a walking wheel lifting cylinder and a walking wheel set. The walking wheel lifting cylinder is located at the lower end of the outer mold support frame, and the walking wheel lifting cylinder extends out of the lower end of the outer mold support frame and connects to the walking wheel set.

[0013] The present invention also provides a construction method for a self-propelled culvert concrete construction formwork device. The construction method, using the self-propelled culvert concrete construction formwork device, includes the following steps: Step S1: Assemble the inner formwork assembly, outer formwork assembly, inner formwork moving mechanism, and outer formwork moving mechanism on the foundation surface of the culvert construction area; Step S2: Control the inner template moving mechanism to drive the inner template support frame to descend, so that the inner template assembly is lowered to the design elevation, and control the inner template assembly to unfold to form the door-shaped inner cavity forming surface; Step S3: Control the outer formwork moving mechanism to move the outer formwork assembly and close it with the inner formwork assembly to form the culvert's pouring cavity; Step S4: Pour concrete into the casting cavity and wait for the concrete to reach the predetermined strength to form a culvert. Step S5: Control the outer template moving mechanism to detach the outer template assembly from the outer surface of the culvert, and control the inner template moving mechanism to detach the inner template assembly from the inner surface of the culvert.

[0014] Because the present invention adopts the above technical solution, it has the following advantages and effects: This invention provides a self-propelled culvert concrete construction formwork device and construction method. The formwork device is composed of an inner formwork assembly, an inner formwork moving mechanism, an outer formwork assembly, an outer formwork moving mechanism, and a controller, which realizes precise positioning, rapid demolding, and overall self-movement of the formwork. This transforms the traditional intermittent, high-intensity manual operation into a continuous automated assembly line operation, thereby significantly improving construction efficiency and reducing labor intensity. Furthermore, the various mechanisms can be adjusted in coordination, improving adaptability to culverts of different sizes. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the device structure of the present invention.

[0016] Figure 2 for Figure 1 Side view.

[0017] The attached diagram is labeled as follows: 1 - Top fixed template of the inner mold; 2 - Moving plate of the inner mold; 3 - Outer template; 4 - Crossbeam; 5 - Connecting rod; 6 - Outer mold support frame; 7 - Smooth cylinder; 8 - Outer mold flat push cylinder; 9 - Walking wheel set; 10 - Walking wheel lifting cylinder; 11 - Inner frame; 12 - Cross bracket; 13 - Positioning bar; 14 - Smooth tube; 15 - Vertical push cylinder; 16 - Ground-aligning cylinder; 17 - Retracting cylinder; 18 - Vertical sliding tube; 19 - Vertical sliding tube 20 - Drive wheel assembly; 21 - Lifting wheel assembly; 22 - Drive wheel sleeve; 23 - Drive wheel slide bar; 24 - Track; 25 - Bottom beam; 26 - Top moving template of inner mold; 27 - End slide bar; 28 - Inner mold lifting cylinder; 29 - Reinforcing longitudinal beam; 30 - Inner mold width adjustment assembly; 31 - Support telescopic baffle; 32 - Fixed sleeve; 33 - Sealing telescopic plate; 34 - Bottom mold; 35 - Slide column; 36 - Bottom mold lifting cylinder. Detailed Implementation

[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0019] like Figure 1 , Figure 2As shown, this invention discloses a self-propelled culvert concrete construction formwork device, comprising an inner formwork assembly, an inner formwork moving mechanism, an outer formwork assembly, an outer formwork moving mechanism, and a controller. The inner formwork assembly is positioned around the outer periphery of the inner formwork moving mechanism, the outer formwork assembly is positioned around the outer periphery of the inner formwork assembly, and the outer formwork moving mechanism is positioned around the outer periphery of the outer formwork assembly. The inner and outer formwork assemblies form a portal frame by inner and outer rings. The inner formwork assembly forms the inner mold supporting the culvert, and the gap between the inner and outer formwork assemblies is used for pouring concrete. The inner formwork moving mechanism is connected to the inner formwork assembly for moving and adjusting its position, and the outer formwork moving mechanism is connected to the outer formwork assembly for moving and adjusting the position of the inner formwork assembly. The controller controls the movement of the inner and outer formwork moving mechanisms. By adjusting the gap between the inner and outer formwork assemblies through mutual movement of the inner and outer formwork moving mechanisms, concrete is filled into the gap between the inner and outer formwork assemblies to form the poured culvert.

[0020] Furthermore, the inner formwork assembly constitutes the forming surface for pouring the concrete inside the culvert. The inner formwork assembly includes an inner formwork movable plate 2, an inner formwork top fixed plate 1, and an inner formwork top movable plate 26. A pair of inner formwork movable plates 2 are arranged laterally at intervals. The inner formwork top fixed plate 1 is located at the upper end of the pair of inner formwork movable plates 2, and inner formwork top movable plates 26 are set on both sides of the inner formwork top fixed plate 1. The inner formwork movable plates 2, the inner formwork top fixed plate 1, and the inner formwork top movable plates 26 on both sides together form an adjustable-width "door"-shaped structure to accommodate culvert cavities of different sizes.

[0021] Specifically, the fixed template 1 of the inner mold top is fixedly installed directly above a pair of movable inner mold plates 2, and a movable template 26 of the inner mold top is hinged to each of the two lateral sides (i.e., the left and right sides) of the fixed template 1. The fixed template 1 of the inner mold top is provided with end slide rods 27 at both ends, and the end slide rods 27 are fitted into the movable templates 26 of the inner mold top.

[0022] Furthermore, the inner formwork moving mechanism is used to support the inner formwork assembly and realize its longitudinal movement, lateral width adjustment, and vertical demolding and positioning within the culvert. The inner formwork moving mechanism includes rails 24, an inner formwork support frame, an inner formwork moving and lifting assembly, an inner formwork width adjustment assembly 30, and retractable cylinders 17. A pair of rails 24 are arranged laterally at intervals, and are laid parallel to the completed foundation surface along the culvert construction direction (longitudinal). A pair of laterally spaced inner formwork moving and lifting assemblies are respectively installed at both ends of the longitudinal direction of the inner formwork support frame. The bottoms of the pair of laterally spaced inner formwork moving and lifting assemblies are slidably mounted on a pair of rails 24. At least one pair of longitudinally spaced inner formwork width adjustment assemblies 30 are respectively installed on both sides of the inner formwork support frame. One end of the inner formwork width adjustment assembly 30 is connected to the inner formwork moving plate 2. The upper end of the inner formwork support frame is connected to the inner formwork top fixed template 1. Retractable cylinders 17 are installed at both ends of the inner formwork top fixed template 1, and the two ends of the retractable cylinders 17 are respectively connected to the inner formwork top fixed template 1 and the inner formwork top moving template 26.

[0023] Specifically, the inner formwork support frame includes an inner frame 11, cross brackets 12, smooth tubes 14, and a bottom beam 25. The inner frame 11 has multiple spaced cross brackets 12 along its longitudinal direction. The bottom beam 25 is located on both sides of the bottom of the inner frame 11. Smooth tubes 14 are fixed to the inner sides of both ends of the inner frame 11 above the bottom beam 25. One end of the inner mold width adjustment component 30 is fixed to the smooth tube 14. The inner mold moving and lifting component is connected to the bottom beam 25. The upper end of the inner frame 11 is fixed to the top fixed template 1 of the inner mold via a connecting rod 5. The lower inner side of the inner mold moving plate 2 is connected to a reinforcing longitudinal beam 29, and the other end of the inner mold width adjustment component 30 is connected to the reinforcing longitudinal beam 29.

[0024] A retractable cylinder 17 is installed at each of the longitudinal ends of the fixed template 1 at the top of the inner mold. The two ends of the retractable cylinder 17 are respectively hinged to the end of the fixed template 1 at the top of the inner mold and the movable template 26 at the top of the inner mold on the same side. The movable template 26 at the top of the inner mold is a telescopic structure composed of several nested template components. The outer template components are connected to the retractable cylinder 17. By extending and retracting the retractable cylinder 17, the movable template 26 at the top of the inner mold can be controlled to extend laterally along the fixed template 1 at the top of the inner mold.

[0025] Furthermore, the inner mold moving and lifting assembly includes a drive wheel set 20, a drive wheel sleeve 22, a drive wheel slide bar 23, an inner mold lifting cylinder 28, and a lifting wheel set 21. The drive wheel set 20 is slidably mounted on the track 24. The drive wheel slide bar 23 is slidably mounted inside the drive wheel sleeve 22. The outer periphery of the drive wheel sleeve 22 is connected to the lower end of the inner mold support frame. The lower end of the drive wheel slide bar 23 is connected to the drive wheel set 20. The two ends of the inner mold lifting cylinder 28 are respectively connected to the upper end of the inner mold support frame and the upper end of the drive wheel slide bar 23. The lifting wheel set 21 is fixed to the side of the drive wheel set 20. The sliding wheels of the lifting wheel set 21 are nested on both sides of the track 24, serving as auxiliary guides and preventing overturning. Each inner mold width adjustment assembly 30 includes a screw, a nut, and a reducer. The reducer is mounted on the inner mold support frame, the nut is slidably connected to the inner mold support frame, the screw is screwed into the nut, and one end of the screw is connected to the inner mold moving plate. A toothed disc is provided on the outer periphery of the nut, and a drive gear is sleeved on the output end of the reducer. The drive gear meshes with the toothed disc and drives the nut to rotate through the reducer.

[0026] Specifically, each track 24 has a drive wheel assembly 20 slidably mounted on it, and a drive wheel slide bar 23 is fixedly connected above the drive wheel assembly 20. A drive wheel sleeve 22 is fitted on the drive wheel slide bar 23, and the outer side of the drive wheel sleeve 22 is fixedly connected to the end of the bottom beam 25. Each inner mold width adjustment assembly 30 is a screw and nut mechanism. One end of the screw is slidably connected to the reinforcing longitudinal beam 29, and the reinforcing longitudinal beam 29 is connected to the corresponding inner mold moving plate 2. The other end of the screw is slidably fitted inside the smooth tube 14, and the nut is slidably connected to the end of the smooth tube 14. The reducer drives the nut to rotate forward and backward, controlling the extension and retraction of the screw. This allows for synchronous control of the two inner mold moving plates 2 to move towards or away from each other, thereby adjusting the width of the inner mold moving plate 2 to accommodate culvert sidewalls of different thicknesses. The two ends of the inner mold lifting cylinder 28 are respectively hinged to the upper end of the inner frame 11 and the upper end of the drive wheel slide 23. By controlling the extension and retraction of the inner mold lifting cylinder 28, the entire inner mold support frame and the inner mold assembly installed on it can be driven to rise and fall relative to the drive wheel group 20 and the track 24, thereby realizing the overall demolding of the inner mold assembly.

[0027] Furthermore, the drive wheel assembly 20 includes a drive motor, drive wheels, and a drive frame. The drive wheels roll on the track 24 to achieve movement. The drive wheels are slidably fitted inside the drive frame. The drive motor is mounted on the drive frame to drive the drive wheels to rotate. The drive wheel slide bar 23 is connected to the drive frame. The lifting wheel assembly 21 includes connecting plates and sliding wheels. A pair of connecting plates are laterally spaced and connected to the drive frame. The lower end of each connecting plate is slidably connected to a sliding wheel. A pair of sliding wheels are respectively slidably nested on both sides of the track 24.

[0028] Furthermore, the inner formwork assembly also includes a sealing telescopic plate 33. The lower end of the inner formwork moving plate 2 is connected to the sealing telescopic plate 33, which is used to seal with the foundation surface during pouring to prevent grout leakage. The inner formwork moving mechanism also includes a sealing plate lifting assembly. Sealing plate lifting assemblies are respectively installed at both ends of the longitudinal direction of the inner formwork moving plate 2. One end of the sealing plate lifting assembly is connected to the inner formwork moving plate 2, and the other end is connected to the sealing telescopic plate 33.

[0029] Specifically, the sealing telescopic plate 33 is an L-shaped rubber telescopic plate or a corrugated plate. The sealing plate lifting assembly includes a fixed sliding sleeve 32, a sliding column 35, and a bottom mold lifting cylinder 36. The fixed sliding sleeve 32 is connected to the end of the inner mold moving plate 2. The sliding column 35 is slidably fitted inside the fixed sliding sleeve 32. A longitudinal bottom mold 34 is provided at the lower end of the sliding column 35. The bottom mold 34 is connected to the lower end of the sealing telescopic plate 33. The two ends of the bottom mold lifting cylinder 36 are respectively connected to the upper ends of the inner mold moving plate 2 and the sliding column 35. The length of the sealing telescopic plate 33 can be adjusted independently through the bottom mold lifting cylinder 36 to ensure that its lower end is tightly fitted with the uneven foundation surface, thereby achieving a seal at the lower end of the inner mold assembly.

[0030] Furthermore, the outer formwork assembly is used to form the concrete forming surface on the outside of the culvert. The outer formwork assembly includes two outer formworks 3. One set of outer formworks 3 is located on the transverse outer periphery of a pair of inner formwork movable plates 2, and the other set of outer formworks 3 together with the inner formworks form the pouring cavity of the walls on both sides of the culvert.

[0031] Furthermore, ground-aligning cylinders 16 are also installed around the lower end of the inner template support frame. The height of the inner template support frame can be adjusted by the ground-aligning cylinders 16, so that the entire device can be lifted off the ground to facilitate the movement of the track 24.

[0032] Furthermore, the outer template moving mechanism is used to support the outer template 3 and enable its lateral movement to move closer to or further away from the inner template and for demolding of the outer template 3. The outer template moving mechanism includes an outer template moving and lifting assembly, an outer template flat-push cylinder 8, an outer template support frame 6, and a top support frame. At least one pair of outer template support frames are arranged at longitudinal intervals along the lateral periphery of each outer template. The lower end of each outer template support frame is connected to the outer template moving and lifting assembly, and the upper end of each outer template support frame is slidably connected to the top support frame. Each outer template support frame and the top support frame are connected by the outer template flat-push cylinder.

[0033] Specifically, the top support frame includes positioning bars 13, crossbeams 4, and smoothing cylinders 7. A crossbeam 4 is correspondingly installed on each of a pair of laterally spaced outer mold support frames. The upper end of each crossbeam 4 is connected to at least one pair of laterally spaced positioning bars 13. The positioning bars 13 and crossbeams 4 are arranged longitudinally and laterally to form a mesh structure. The two ends of the outer mold pushing cylinder 8 are connected to the crossbeams 4 and the smoothing cylinder 7, respectively. By controlling the extension and retraction of the outer mold pushing cylinder 8, the entire outer mold plate 3 can be pushed to slide laterally along the crossbeams 4, thereby realizing the mold closing (moving inward) and opening (moving outward) of the outer mold plate.

[0034] Furthermore, to facilitate the formation of the culvert's top slope, the outer formwork moving mechanism also includes an outer formwork slope lifting assembly, which is connected between the longitudinal ends of the top support frame and the inner formwork support frame. The outer formwork slope lifting assembly includes a vertical slide tube 18, a vertical slide bar 19, and a vertical push cylinder 15. The lower end of the vertical slide tube 18 is connected to the inner formwork support frame, and the vertical slide bar 19 is slidably fitted inside the vertical slide tube 18. The upper end of the vertical slide bar 19 extends out of the vertical slide tube and connects to the top support frame. The vertical push cylinder 15 is mounted on the top support frame, with one end connected to the vertical slide tube 18. By adjusting the extension and retraction of the vertical push cylinder 15, the slope of the top support frame can be adjusted, thus forming a slope at the top of the culvert.

[0035] Specifically, a pair of laterally spaced outer formwork slope lifting components are connected to the positioning bar 13 at one longitudinal end (e.g., the rear end) of the inner frame 11. A pair of laterally spaced vertical push cylinders 15 are mounted on the positioning bar 13, and their telescopic ends are connected to the vertical slide tube 18. By extending and retracting the vertical push cylinders 15, the length of the vertical slide bar 19 extending out of the vertical slide tube 18 can be adjusted, thereby lifting or lowering the positioning bar 13, causing a height change at one end of the entire outer formwork assembly to match the longitudinal slope of the culvert foundation.

[0036] Furthermore, a support telescopic baffle 31 is provided at the lower end of the outer template 3. The support telescopic baffle 31 is set on the foundation surface to position and seal the lower end of the outer template 3. When there is a gap between the bottom of the outer template assembly and the foundation surface, the lower end of the outer template 3 can be sealed by the support telescopic baffle 31.

[0037] Furthermore, the outer mold moving and lifting assembly includes a walking wheel lifting cylinder 10 and a walking wheel set 9. The walking wheel lifting cylinder 10 is located at the lower end of the outer mold support frame 6, and the walking wheel lifting cylinder 10 extends out of the lower end of the outer mold support frame and connects to the walking wheel set 9.

[0038] Specifically, the outer formwork support frame 6 includes vertical beams and horizontal beams. A pair of horizontal beams are spaced apart vertically, with one end connected to the outer formwork and the other end connected to the vertical beam. The upper end of the vertical beam is connected to a smooth cylinder 7. A traveling wheel lifting cylinder 10 is installed on the lower horizontal beam. When the outer formwork needs to move a long distance, the traveling wheel assembly 9 can be lowered through the traveling wheel lifting cylinder 10, so that the lower end of the outer formwork assembly rests on the foundation surface. In conjunction with the drive wheel assembly 20 of the inner formwork moving mechanism, the entire formwork device can move on its own. When positioning the concrete pouring, the traveling wheel assembly 9 is retracted. The lower traveling wheel assembly 9 includes a connecting rod, a connecting shaft, and traveling wheels. The upper end of the connecting rod is connected to the traveling wheel lifting cylinder 10, and the lower end of the connecting rod is perpendicularly connected to the connecting shaft. Traveling wheels are slidably fitted onto both ends of the connecting shaft.

[0039] Furthermore, the controller is a PLC controller, which is electrically connected to components such as the outer mold flat push cylinder 8, the traveling wheel lifting cylinder 10, the vertical push cylinder 15, the ground-level oil cylinder 16, the retraction cylinder 17, the inner mold lifting cylinder 28, the bottom mold lifting cylinder 36, the drive motor, and the reducer. The controller can control the orderly action of each component through the program and issue instructions according to the preset program to coordinate the automated operation of the entire device.

[0040] This invention also provides a construction method for a self-propelled culvert concrete construction formwork device. The construction method using this self-propelled culvert concrete construction formwork device specifically includes the following steps: Step S1: Assemble the inner formwork assembly, outer formwork assembly, inner formwork moving mechanism, and outer formwork moving mechanism on the foundation surface of the culvert construction area.

[0041] Specifically, on the foundation surface of the culvert construction area, a pair of tracks 24 are laid parallel to the longitudinal direction of the culvert. The drive wheel set 20 and lifting wheel set 21 of the inner formwork moving mechanism are placed on the tracks 24, so that the entire formwork device is moved to the predetermined pouring position.

[0042] Step S2: Control the inner template moving mechanism to drive the inner template support frame to descend, so that the inner template assembly is lowered to the design elevation, and control the inner template assembly to unfold to form the door-shaped inner cavity forming surface.

[0043] Specifically, the inner template moving mechanism is controlled to drive the inner template support frame to descend via the inner template lifting cylinder 28, so that the inner template assembly is lowered to the design elevation; the inner template width adjusting assembly 30 is activated to drive a pair of inner template moving plates 2 to move back to back to the design width; the retraction cylinder 17 on the inner template assembly is controlled to push the upper moving template 26 of the inner template to unfold, so that it, together with the upper fixed template 1 of the inner template and the inner template moving plate 2, forms a door-shaped inner cavity forming surface; the sealing plate lifting assembly is controlled to push the sealing telescopic plate downward, so that its lower edge contacts and presses against the base surface.

[0044] Step S3: Control the outer template moving mechanism to move the outer template components and close them with the inner template components to form the culvert's pouring cavity.

[0045] Specifically, the outer formwork moving mechanism is controlled to drive the outer formwork 3 to move laterally inward along the top support frame through the outer formwork push cylinder 8, so that the outer formwork 3 moves closer to the inner formwork moving plate 2 to form the culvert wall pouring cavity. The height of one end of the top support frame is adjusted by the vertical push cylinder 15 of the outer formwork slope lifting component to make the top slope of the outer formwork 3 consistent with the design. The traveling wheel group 9 of the outer formwork moving lifting component is controlled to retract, so that the outer formwork support frame is stably supported on the foundation surface.

[0046] Step S4: Pour concrete into the cavity until the concrete reaches the predetermined strength to form a culvert.

[0047] Step S5: Control the outer template moving mechanism to detach the outer template assembly from the outer surface of the culvert, and control the inner template moving mechanism to detach the inner template assembly from the inner surface of the culvert.

[0048] Specifically, the outer mold push cylinder 8 is retracted, driving the outer mold 3 to move laterally outward and detach from the concrete surface; then, the retraction cylinder 17 is retracted, pulling the top moving mold 26 of the inner mold to retract; next, the inner mold width adjustment component 30 is operated, driving a pair of inner mold moving plates 2 to move towards each other, so that they detach from the inner surface of the concrete.

[0049] Step S6: After moving the module device to the next construction position, repeat steps S2 to S5 to carry out the construction of the next culvert section.

Claims

1. A self-propelled culvert concrete construction formwork device, characterized in that, include: The inner mold assembly includes an inner mold moving plate (2), an inner mold top fixed template (1) and an inner mold top moving template (26). A pair of inner mold moving plates (2) are arranged laterally at intervals. The inner mold top fixed template (1) is located at the upper end of the pair of inner mold moving plates (2). The inner mold top moving template (26) is arranged on both sides of the inner mold top fixed template (1). The inner template moving mechanism includes a track (24), an inner template support frame, an inner template moving and lifting assembly, an inner template width adjusting assembly (30), and a retracting cylinder (17). A pair of tracks (24) are arranged laterally at intervals. A pair of inner template moving and lifting assemblies are arranged laterally at both ends of the longitudinal direction of the inner template support frame. The bottoms of the pair of inner template moving and lifting assemblies are slidably arranged on the pair of tracks (24). At least one pair of inner template width adjusting assemblies (30) are arranged longitudinally at intervals on both sides of the inner template support frame. One end of the inner template width adjusting assembly (30) is connected to the inner template moving plate (2). The upper end of the inner template support frame is connected to the inner template top fixed template (1). The retracting cylinder (17) is arranged at both ends of the inner template top fixed template (1). The two ends of the retracting cylinder (17) are connected to the inner template top fixed template (1) and the inner template top moving template (26), respectively. The outer template assembly includes an outer template (3), and a pair of said outer templates (3) are respectively located on the lateral outer periphery of a pair of said inner template moving plates (2); The outer template moving mechanism includes an outer template moving and lifting assembly, an outer template flat push cylinder (8), an outer template support frame (6), and a top support frame. Each outer template (3) is provided with at least one pair of outer template support frames (6) at longitudinal intervals along its lateral periphery. The lower end of each outer template support frame (6) is connected to the outer template moving and lifting assembly, and the upper end of each outer template support frame (6) is slidably connected to the top support frame. The outer template support frame (6) and the top support frame are both connected through the outer template flat push cylinder (8).

2. The self-propelled culvert concrete construction formwork device according to claim 1, characterized in that, The inner template assembly also includes a sealing telescopic plate (33), the lower end of the inner template moving plate (2) is connected to the sealing telescopic plate (33), the inner template moving mechanism also includes a sealing plate lifting assembly, the sealing plate lifting assembly is respectively provided at both ends of the longitudinal direction of the inner template moving plate (2), one end of the sealing plate lifting assembly is connected to the inner template moving plate (2), and the other end is connected to the sealing telescopic plate (33).

3. The self-propelled culvert concrete construction formwork device according to claim 1, characterized in that, The inner mold moving and lifting assembly includes a drive wheel set (20), a drive wheel sleeve (22), a drive wheel slide bar (23), and an inner mold lifting cylinder (28). The drive wheel set (20) is slidably mounted on the track (24). The drive wheel sleeve (22) is slidably fitted inside the drive wheel slide bar (23). The outer periphery of the drive wheel sleeve (22) is connected to the lower end of the inner mold support frame. The lower end of the drive wheel slide bar (23) is connected to the drive wheel set (20). The two ends of the inner mold lifting cylinder (28) are respectively connected to the upper end of the inner mold support frame and the upper end of the drive wheel slide bar (23). The inner mold width adjusting assembly (30) includes a screw, a nut, and a reducer. The reducer is mounted on the inner mold support frame. The nut is slidably connected to the inner mold support frame. The screw is screwed into the nut. One end of the screw is connected to the inner mold moving plate (2). The reducer drives the nut to rotate.

4. The self-propelled culvert concrete construction formwork device according to claim 3, characterized in that, The inner template moving mechanism also includes a lifting wheel assembly (21), which is slidably nested on both sides of the track (24) and is connected to the drive wheel assembly (20).

5. The self-propelled culvert concrete construction formwork device according to claim 4, characterized in that, The drive wheel assembly (20) includes a drive motor, a drive wheel, and a drive frame. The drive wheel is mounted on the track (24). The drive wheel is slidably mounted inside the drive frame. The drive motor is mounted on the drive frame to drive the drive wheel to rotate. The drive frame is connected to the drive wheel slide bar (23). The lifting wheel assembly (21) includes a connecting plate and a sliding wheel. A pair of connecting plates are laterally spaced and connected inside the drive frame. The lower end of each connecting plate is slidably connected to the sliding wheel. A pair of sliding wheels are slidably nested on both sides of the track (24).

6. The self-propelled culvert concrete construction formwork device according to claim 2, characterized in that, The sealing plate lifting assembly includes a fixed sliding sleeve (32), a sliding column (35), and a bottom mold lifting cylinder (36). The fixed sliding sleeve (32) is connected to the end of the inner mold moving plate (2). The sliding column (35) is slidably sleeved in the fixed sliding sleeve (32). The lower end of the sliding column (35) is connected to the sealing telescopic plate (33). The two ends of the bottom mold lifting cylinder (36) are respectively connected to the upper ends of the inner mold moving plate (2) and the sliding column (35).

7. The self-propelled culvert concrete construction formwork device according to claim 1, characterized in that, The outer template moving mechanism also includes an outer template slope lifting component. The outer template slope lifting component is connected between the longitudinal end of the top support frame and the inner template support frame. The outer template slope lifting component includes a vertical slide tube (18), a vertical slide bar (19), and a vertical push cylinder (15). The lower end of the vertical slide tube (18) is connected to the inner template support frame. The vertical slide bar (19) is slidably sleeved inside the vertical slide tube (18). The vertical slide bar (19) extends out of the upper end of the vertical slide tube (18) and is connected to the top support frame. The vertical push cylinder (15) is set on the top support frame and one end is connected to the vertical slide tube (18).

8. The self-propelled culvert concrete construction formwork device according to claim 7, characterized in that, The top support frame includes a positioning bar (13), a crossbeam (4) and a smooth cylinder (7). A crossbeam (4) is provided on each of the two horizontally spaced outer mold support frames (6). The upper end of the crossbeam (4) is connected to at least one pair of horizontally spaced positioning bars (13). The vertical push cylinder (15) is provided on the positioning bar (13). The two ends of the outer mold flat push cylinder (8) are respectively connected to the crossbeam (4) and the smooth cylinder (7).

9. The self-propelled culvert concrete construction formwork device according to claim 2, characterized in that, The outer mold moving and lifting assembly includes a walking wheel lifting cylinder (10) and a walking wheel set (9). The walking wheel lifting cylinder (10) is located at the lower end of the outer mold support frame (6) and extends out of the lower end of the outer mold support frame (6) to connect with the walking wheel set (9).

10. A construction method for a self-propelled culvert concrete formwork device, using the self-propelled culvert concrete formwork device as described in any one of claims 1-9, characterized in that, The construction method includes the following steps: Step S1: Assemble the inner formwork assembly, outer formwork assembly, inner formwork moving mechanism, and outer formwork moving mechanism on the foundation surface of the culvert construction area; Step S2: Control the inner template moving mechanism to drive the inner template support frame to descend, so that the inner template assembly is lowered to the design elevation, and control the inner template assembly to unfold to form the door-shaped inner cavity forming surface; Step S3: Control the outer formwork moving mechanism to move the outer formwork assembly and close it with the inner formwork assembly to form the culvert's pouring cavity; Step S4: Pour concrete into the casting cavity and wait for the concrete to reach the predetermined strength to form a culvert. Step S5: Control the outer template moving mechanism to detach the outer template assembly from the outer surface of the culvert, and control the inner template moving mechanism to detach the inner template assembly from the inner surface of the culvert.

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