Diameter-variable box culvert formwork system

Abstract

The invention relates to the technical field of box culverts, in particular to a variable-diameter box culvert formwork supporting system which comprises a frame, a first hydraulic rod is arranged at the top of the frame, a top formwork is arranged at the top of a supporting plate, and the variable-diameter box culvert formwork supporting system further comprises adjustable side formwork assemblies arranged on the two sides of the frame. The deflection assembly is arranged in the frame; the plugging assembly is arranged on the supporting plate; the driving walking assembly is arranged at the bottom of the frame; the driven walking assembly is movably arranged in the adjustable side mold assembly; by arranging the adjustable frame, the height and the width can be adjusted according to the size of a box culvert, the outer formwork and the side formwork can be adjusted, the thickness of a wall can be changed according to needs, meanwhile, the walking mechanism is arranged at the bottom, after one section of pouring is completed, the wall can walk forwards automatically, and during demolding, the mold can be taken out automatically. The outer mold plate can move outwards, and the side mold plate can contract inwards, so that the effect of quick demolding is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of box culverts, and particularly relates to a variable-diameter box culvert formwork system. Background Art

[0002] A box culvert refers to a culvert whose culvert body is built with reinforced concrete box-shaped pipe sections. The box culvert consists of one or more square or rectangular cross-sections and is generally made of reinforced concrete.

[0003] The construction of box culverts generally adopts in-situ casting. A bottom layer is set in the excavated trench, a layer of concrete cushion is poured, and the processed steel bars are then tied on-site. The inner formwork and outer formwork are supported. For larger box culverts, generally, the bottom slab and the lower half of the side walls are first poured, then the steel bars of the upper part of the side walls and the top slab are tied, the inner and outer formworks are well supported, and the upper half of the side walls and the top slab are poured. After the concrete reaches the designed strength, the formwork is removed, and the soil is backfilled on both sides of the box culvert at the same time.

[0004] With the accelerating urbanization process, the urban capacity is continuously expanding, and box culverts, comprehensive pipe trenches, buried tunnels, and tunnel open cuts with large cross-sections and complex cross-sections will inevitably become more and more common in tunnel construction; the traditional construction method for lining box culverts, buried tunnels, and tunnel open cuts with large cross-sections and complex cross-sections generally uses small flat plates and full hall frames for support, which is time-consuming and laborious and has relatively large potential safety hazards. Summary of the Invention

[0005] The purpose of the present invention is to solve the above deficiencies and provide a variable-diameter box culvert formwork system.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A variable-diameter box culvert formwork system includes a vehicle frame. A first hydraulic rod is provided at the top of the vehicle frame, and a support plate is connected to the movable end of the first hydraulic rod. A top formwork is provided on the top of the support plate. The system further includes:

[0008] An adjustable side formwork assembly, which is arranged on both sides of the vehicle frame and is used to adjust the thickness of the side formwork;

[0009] A deflection assembly, which is arranged inside the vehicle frame and is used to drive the adjustable side formwork assembly to rotate;

[0010] A plugging assembly, which is arranged on the support plate and is used to plug the concrete;

[0011] A driving walking assembly, which is arranged at the bottom of the vehicle frame and is used to drive the movement of the entire vehicle frame;

[0012] A driven walking assembly, which is movably arranged inside the adjustable side formwork assembly and is used to drive the movement of the adjustable side formwork assembly.

[0013] Furthermore, the adjustable side mold assembly includes a side template rotatably connected to the top mold. An outer template is provided on the side of the side template away from the vehicle frame. Baffles are provided on both sides of the outer template, and the baffles are fixedly connected to the outer template by locking bolts. A hydraulic system is also provided on the vehicle frame, and the movable end of the hydraulic system is connected to the baffle. The movable end of the deflection assembly is connected to the side template, and the driven traveling assembly is arranged inside the outer template.

[0014] Furthermore, the deflection assembly includes a second hydraulic rod fixed to the bottom of the vehicle frame. The movable end of the second hydraulic rod is connected to a lifting platform. Movable rods are rotatably arranged at both ends of the lifting platform. A fixed frame is also provided at the bottom of the vehicle frame. One end of the movable rod away from the lifting platform is rotatably provided with a pull rod, and the pull rod is slidably connected to the fixed frame. The end of the pull rod away from the movable rod is rotatably provided with a limit slider, and the limit slider is slidably connected to the side template.

[0015] Furthermore, a storage groove is formed at the bottom of the outer template. The driven traveling assembly includes a deflection rod rotatably arranged in the storage groove, and a driven traveling wheel is rotatably arranged at one end of the deflection rod.

[0016] Furthermore, a sliding rod is arranged inside the deflection rod, and a moving slider is sleeved on the sliding rod. A return spring sleeved on the sliding rod is arranged between the moving slider and the inner wall of the deflection rod. An extrusion rod is also rotatably arranged in the storage groove, and one end of the extrusion rod is rotatably connected to the moving slider.

[0017] Furthermore, the plugging assembly includes a bottom plate fixed to the support plate. A connecting frame is provided on the bottom plate, and a threaded rod is rotatably arranged inside the connecting frame. The top end of the threaded rod is rotatably provided with a top plate, and a knob is arranged at the bottom end of the threaded rod.

[0018] Furthermore, the driving traveling assembly includes a third hydraulic rod arranged at the bottom of the vehicle frame. The bottom end of the third hydraulic rod is provided with a first mounting bracket. The bottom of the first mounting bracket is provided with a second mounting bracket. The bottom of the second mounting bracket is provided with a traveling frame, and a driving traveling wheel is rotatably arranged inside the traveling frame. A traveling track is arranged at the bottom of the driving traveling wheel.

[0019] Furthermore, a fourth hydraulic rod is arranged inside the first mounting bracket, and the movable end of the fourth hydraulic rod penetrates through the second mounting bracket and is connected to the traveling frame. Auxiliary brackets are provided on both sides of the traveling frame, and auxiliary wheels are rotatably arranged at the bottom of the auxiliary brackets. The auxiliary wheels are connected to the traveling track.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The present invention is provided with an adjustable frame, which can adjust the height and width according to the size of the culvert box. The outer formwork and the side formwork are also adjustable, and the wall thickness can be changed according to needs. At the same time, a traveling mechanism is provided at the bottom. After a section of pouring is completed, it can automatically move forward. And when demolding, the outer formwork can move outwards, while the side formwork can shrink inwards, so as to achieve the effect of rapid demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 is a schematic diagram of the deflection assembly of the present invention;

[0025] Figure 3 is a schematic diagram of the adjustable side formwork assembly of the present invention;

[0026] Figure 4 is a schematic diagram of the driven traveling assembly of the present invention;

[0027] Figure 5 is a schematic diagram of the plugging assembly of the present invention;

[0028] Figure 6 is a schematic diagram of the driving traveling assembly of the present invention.

[0029] In the figure: 1, frame; 11, fixed frame; 2, first hydraulic rod; 3, support plate; 4, top formwork; 5, adjustable side formwork assembly; 51, side formwork; 52, outer formwork; 53, baffle; 54, locking bolt; 55, hydraulic system; 6, deflection assembly; 61, second hydraulic rod; 62, lifting platform; 63, movable rod; 64, pull rod; 7, driven traveling assembly; 71, deflection rod; 72, driven traveling wheel; 73, sliding rod; 74, moving slider; 75, return spring; 76, extrusion rod; 8, plugging assembly; 81, bottom plate; 82, top plate; 83, connecting frame; 84, threaded rod; 85, knob; 9, driving traveling assembly; 91, third hydraulic rod; 92, first mounting frame; 93, second mounting frame; 94, fourth hydraulic rod; 95, traveling frame; 96, driving traveling wheel; 97, auxiliary frame; 98, auxiliary wheel; 99, traveling track. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] Referring to Figures 1-6 As shown, a variable-diameter box culvert formwork system. Here, for the formwork system, the bottom formwork has been poured, and only the two sides and the top need to be poured. It includes a vehicle frame 1. The vehicle frame 1 itself has a certain degree of adjustability. Its transverse direction is also connected by a telescopic component and can be adjusted in width according to needs. In terms of height, it can be adjusted by a hydraulic rod, mainly to adapt to box culverts of various sizes. A first hydraulic rod 2 is arranged on the top of the vehicle frame 1. The movable end of the first hydraulic rod 2 is connected to a support plate 3. A top formwork 4 is arranged on the top of the support plate 3. Here, the first hydraulic rod 2 is mainly used for demoulding. After the pouring is completed, the first hydraulic rod 2 contracts, driving the top formwork 4 to move downward, thus completing rapid demoulding. It also includes:

[0033] An adjustable side formwork assembly 5, arranged on both sides of the vehicle frame 1, for adjusting the side formwork thickness;

[0034] A deflection assembly 6, arranged inside the vehicle frame 1, for driving the adjustable side formwork assembly 5 to rotate, so that it contracts inward to realize the demoulding of the side formwork;

[0035] A sealing assembly 8, arranged on the support plate 3. During pouring, in order to prevent concrete from leaking from the end, the concrete can be sealed by the sealing assembly 8;

[0036] A driving walking assembly 9, arranged at the bottom of the vehicle frame 1, for driving the entire vehicle frame 1 to move;

[0037] A driven walking assembly 7, movably arranged inside the adjustable side formwork assembly 5, for driving the adjustable side formwork assembly 5 to move.

[0038] In one embodiment, the adjustable side formwork assembly 5 includes a side formwork 51 rotatably connected to the top formwork 4. On the side of the side formwork 51 away from the vehicle frame 1, an outer formwork 52 is provided. On the outer side of the outer formwork 52, a hydraulic component for support can also be provided to provide an inward support force to the outer formwork 52. Baffles 53 are provided on both sides of the outer formwork 52. The baffles 53 are fixedly connected to the outer formwork 52 through locking bolts 54. A hydraulic system 55 is also provided on the vehicle frame 1. The movable end of the hydraulic system 55 is connected to the baffle 53, and the movable end of the deflection assembly 6 is connected to the side formwork 51. The driven traveling assembly 7 is arranged inside the outer formwork 52;

[0039] When adjusting the thickness of the wall, the baffle 53 is pushed by the hydraulic system 55, and the baffle 53 can drive the outer formwork 52 to move horizontally. Since the box culvert is usually relatively long and difficult to be poured in one go, it needs to be poured in sections. At the beginning, baffles 53 are installed on both sides of the outer formwork 52 to form a closed opening for easy pouring. After the first section is completed, one of the baffles 53 needs to be removed for the subsequent sections, and one end of the removed baffle 53 can be closely attached to the poured concrete.

[0040] In one embodiment, the deflection assembly 6 includes a second hydraulic rod 61 fixed to the bottom of the vehicle frame 1. The movable end of the second hydraulic rod 61 is connected to a lifting platform 62. Movable rods 63 are rotatably arranged at both ends of the lifting platform 62. A fixed frame 11 is also provided at the bottom of the vehicle frame 1. One end of the movable rod 63 away from the lifting platform 62 is rotatably provided with a pull rod 64. The pull rod 64 is slidably connected to the fixed frame 11. The end of the pull rod 64 away from the movable rod 63 is rotatably provided with a limit slider, and the limit slider is slidably connected to the side formwork 51;

[0041] After the pouring is completed, demolding is required. At this time, first, the outer formwork 52 is pushed outward by the hydraulic system 55, and the outer formwork 52 is separated from the concrete. Then, the lifting platform 62 is pushed downward by the second hydraulic rod 61. The lifting platform 62 pulls the pull rod 64 through the movable rod 63, and the pull rod 64 will pull the side formwork 51 to deflect inward. At this time, the first hydraulic rod 2 contracts downward, thereby driving the top formwork 4 to move downward to complete demolding.

[0042] In one embodiment, during pouring, a sealing component 8 is specifically provided to prevent concrete from leaking out from the side. The sealing component 8 includes a bottom plate 81 fixed to the support plate 3. A connecting frame 83 is provided on the bottom plate 81. A threaded rod 84 is rotatably arranged inside the connecting frame 83. The top end of the threaded rod 84 is rotatably provided with a top plate 82, and the bottom end of the threaded rod 84 is provided with a knob 85;

[0043] When in use, by rotating the threaded rod 84, the threaded rod 84 moves upward and pushes the top plate 82 to move upward to form a seal strip, and the height of the seal strip is equivalent to the height of the box culvert.

[0044] In one embodiment, the active walking assembly 9 includes a third hydraulic rod 91 disposed at the bottom of the vehicle frame 1. The bottom end of the third hydraulic rod 91 is provided with a first mounting bracket 92. The bottom of the first mounting bracket 92 is provided with a second mounting bracket 93. The bottom of the second mounting bracket 93 is provided with a walking frame 95. An active walking wheel 96 is rotatably disposed in the walking frame 95. The bottom of the active walking wheel 96 is provided with a walking track 99;

[0045] A fourth hydraulic rod 94 is disposed in the first mounting bracket 92. The movable end of the fourth hydraulic rod 94 passes through the second mounting bracket 93 and is connected to the walking frame 95. Auxiliary frames 97 are disposed on both sides of the walking frame 95. An auxiliary wheel 98 is rotatably disposed at the bottom of the auxiliary frame 97. The auxiliary wheel 98 is connected to the walking track 99;

[0046] After pouring a section, the fourth hydraulic rod 94 contracts upward. The fourth hydraulic rod 94 will drive the walking frame 95 to move upward. The walking frame 95 can pull the walking track 99 upward through the auxiliary wheels 98. At this time, the active walking wheel 96 is started, and the active walking wheel 96 will move the walking track 99 forward. Then the fourth hydraulic rod 94 pushes the walking frame 95 downward, causing the second mounting bracket 93 to leave the ground. At this time, when the active walking wheel 96 is started again, the entire vehicle frame 1 can be driven forward.

[0047] In one embodiment, a receiving groove is formed at the bottom of the outer formwork 52. The driven walking assembly 7 includes a deflecting rod 71 rotatably disposed in the receiving groove. One end of the deflecting rod 71 is rotatably provided with a driven walking wheel 72;

[0048] A sliding rod 73 is disposed in the deflecting rod 71. A moving slider 74 is sleeved on the sliding rod 73. A return spring 75 sleeved on the sliding rod 73 is disposed between the moving slider 74 and the inner wall of the deflecting rod 71. An extrusion rod 76 is also rotatably disposed in the receiving groove. One end of the extrusion rod 76 is rotatably connected to the moving slider 74;

[0049] When the second mounting bracket 93 supports on the ground, the deflecting rod 71 will also be compressed and deflect inward, contracting into the receiving groove. At this time, the deflecting rod 71 will also push the extrusion rod 76 upward. When the extrusion rod 76 deflects upward, it will push the moving slider 74 in the deflecting rod 71, causing the moving slider 74 to compress the return spring 75; when the second mounting bracket 93 leaves the ground, that is, when the entire vehicle frame 1 is lifted, the deflecting rod 71 will deflect downward and extend out of the outer formwork 52, and the driven walking wheel 72 can walk along the ground.

[0050] In one embodiment, for a box culvert, generally, a slab thickness exceeding 35 cm is a super-dangerous project that requires monitoring. The monitoring is mainly carried out by monitoring the stress changes during concrete pouring. Axial force gauges are preset on the steel structure, and at the same time, their close contact with the concrete structure is ensured, so as to more effectively reflect the stress characteristics of the measured structure and meet the test requirements. At the same time, it is connected to the data acquisition terminal wirelessly. The data acquisition terminal is also provided with a corresponding alarm system. The specific alarm system can be sound, light, etc. Corresponding thresholds can be set on the data acquisition terminal. When the stress change measured by the axial force gauge exceeds the threshold, the alarm system on the data acquisition terminal will be triggered.

[0051] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

Claims

1. A variable-diameter box culvert formwork system, comprising a frame (1), a first hydraulic rod (2) is arranged on the top of the frame (1), a supporting plate (3) is connected to the movable end of the first hydraulic rod (2), a top formwork (4) is arranged on the top of the supporting plate (3), and the system is characterized in that: Also includes: An adjustable side mold assembly (5) is arranged on both sides of the frame (1) and is used to adjust the thickness of the side mold; A deflection assembly (6) is disposed in the vehicle frame (1) and is used to drive the adjustable side mold assembly (5) to rotate; A plugging assembly (8) is arranged on the support plate (3) and is used to plug the concrete; An active walking assembly (9) is arranged at the bottom of the frame (1) and is used to drive the movement of the entire frame (1); The driven walking assembly (7) is movably arranged in the adjustable side mold assembly (5) and is used to drive the adjustable side mold assembly (5) to move.

2. A variable diameter box culvert formwork system according to claim 1, characterized in that: The adjustable side mold assembly (5) comprises a side mold (51) rotatably connected to the top mold (4); an outer mold (52) is arranged on the side of the side mold (51) away from the vehicle frame (1); baffles (53) are arranged on both sides of the outer mold (52); the baffles (53) are fixedly connected to the outer mold (52) via locking bolts (54); a hydraulic system (55) is also arranged on the vehicle frame (1); the movable end of the hydraulic system (55) is connected to the baffle (53); the movable end of the deflection assembly (6) is connected to the side mold (51); and the driven walking assembly (7) is arranged in the outer mold (52).

3. The variable diameter box culvert formwork system according to claim 2, characterized in that: The deflection assembly (6) comprises a second hydraulic rod (61) fixed to the bottom of the vehicle frame (1); the movable end of the second hydraulic rod (61) is connected to a lifting platform (62); movable rods (63) are rotatably provided at both ends of the lifting platform (62); a fixed frame (11) is also provided at the bottom of the vehicle frame (1); a pull rod (64) is rotatably provided at one end of the movable rod (63) away from the lifting platform (62); the pull rod (64) is slidably connected to the fixed frame (11); a limit slider is rotatably provided at one end of the pull rod (64) away from the movable rod (63); and the limit slider is slidably connected to the side template (51).

4. The variable diameter box culvert formwork system according to claim 2, characterized in that: The bottom of the outer template (52) is provided with a receiving groove, and the driven travel assembly (7) comprises a deflection rod (71) rotatably arranged in the receiving groove, and a driven travel wheel (72) is rotatably arranged at one end of the deflection rod (71).

5. The variable diameter box culvert formwork system according to claim 4, characterized in that: A slide bar (73) is arranged inside the deflection rod (71), a movable slider (74) is sleeved on the slide bar (73), a return spring (75) sleeved on the slide bar (73) is arranged between the movable slider (74) and the inner wall of the deflection rod (71), and an extrusion rod (76) is rotatably arranged in the receiving groove, and one end of the extrusion rod (76) is rotatably connected to the movable slider (74).

6. The variable diameter box culvert formwork system according to claim 1, characterized in that: The blocking assembly (8) comprises a bottom plate (81) fixed on the support plate (3), a connecting frame (83) being arranged on the bottom plate (81), a threaded rod (84) being rotatably arranged in the connecting frame (83), a top plate (82) being rotatably arranged at the top end of the threaded rod (84), and a knob (85) being arranged at the bottom end of the threaded rod (84).

7. The variable diameter box culvert formwork system according to claim 1, characterized in that: The active travel assembly (9) comprises a third hydraulic rod (91) arranged at the bottom of the frame (1); a first mounting frame (92) is arranged at the bottom end of the third hydraulic rod (91); a second mounting frame (93) is arranged at the bottom of the first mounting frame (92); a travel frame (95) is arranged at the bottom of the second mounting frame (93); an active travel wheel (96) is rotatably arranged in the travel frame (95); and a travel track (99) is arranged at the bottom of the active travel wheel (96).

8. The variable diameter box culvert formwork system according to claim 7, characterized in that: A fourth hydraulic rod (94) is arranged in the first mounting frame (92), and a movable end of the fourth hydraulic rod (94) passes through the second mounting frame (93) and is connected to a traveling frame (95), and sub-frames (97) are arranged on both sides of the traveling frame (95), and a sub-wheel (98) is rotatably arranged at the bottom of the sub-frame (97), and the sub-wheel (98) is connected to a traveling track (99).

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