Supporting device for reinforcing arch bridge bottom die

Abstract

The invention discloses a supporting device for reinforcing an arch bridge bottom die, and belongs to the technical field of arch bridge bottom dies. The supporting device comprises a base, first demolding plates are symmetrically arranged on the two sides of the upper end of the base, second demolding plates are arranged at the ends, away from each other, of the two first demolding plates, a first splicing plate is clamped between the first demolding plate and the second demolding plate on the same side, and a second splicing plate is clamped between the two first demolding plates; a lifting radian adjusting mechanism is arranged at the upper end of the base, and the heights and the radians of the first demolding plate and the second demolding plate are adjusted through the lifting radian adjusting mechanism; the gaps between the first demolding plates and the second demolding plates and the gap between the two first demolding plates are filled through the first splicing plates and the second splicing plates correspondingly; the height and radian of the supporting device can be flexibly and accurately adjusted, and the reinforcing requirements of arch bridge bottom dies of various complex shapes and sizes can be met.

Description

Technical Field

[0001] The invention belongs to the technical field of arch bridge bottom formwork, and in particular relates to a supporting device for reinforcing an arch bridge bottom formwork. Background Art

[0002] Arch bridges use the arch as the main load-bearing component. During the construction process, the bottom formwork needs to bear the weight and pressure of concrete pouring, as well as the subsequent self-weight and service load of the structure. Traditional simple support methods are difficult to meet construction requirements and can easily cause the bottom formwork to deform and sink, affecting the shape and structural quality of the arch bridge. With the development of transportation construction, higher requirements are placed on the construction efficiency and quality of arch bridges. Support devices need to be able to be quickly installed and disassembled to speed up the construction progress, while ensuring the stability and precision of the bottom formwork to ensure the quality of the arch bridge.

[0003] Existing support devices generally support the bottom formwork of arch bridges through steel structures. The height adjustment and curvature support functions of this support structure are independent of each other and lack a linkage mechanism. The curvature support structure needs to be manually adjusted when adjusting the height, or the height needs to be recalibrated after adjusting the curvature. The operation is cumbersome and time-consuming, and it is difficult to quickly adapt to the bottom formwork reinforcement needs of different arch bridge sizes, resulting in low installation efficiency. The height and curvature adjustment rely on manual operation and lack of power-driven components. When adjusting the bottom formwork of large arch bridges at high altitude or over a large span, a large amount of manpower is required, the labor intensity is high and there is a risk of falling from a height. At the same time, the accuracy of manual adjustment is difficult to guarantee, and uneven force on the support structure may be caused by operational errors, affecting the overall stability. Therefore, improvements need to be made based on the above problems. Summary of the Invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a support device for reinforcing the bottom formwork of an arch bridge. The present invention is achieved through the following technical solutions: A supporting device for reinforcing the bottom formwork of an arch bridge comprises a base, first stripping plates are symmetrically provided on both sides of the upper end of the base, and second stripping plates are provided at ends of the two first stripping plates away from each other, and the arch hole of the arch bridge is supported by the first stripping plates and the second stripping plates; a first splicing plate is clamped between the first stripping plate and the second stripping plate on the same side, and a second splicing plate is clamped between the two first stripping plates; a lifting curvature adjustment mechanism is provided at the upper end of the base, and the lifting curvature adjustment mechanism is divided into a lifting adjustment component and a curvature adjustment component; the lifting curvature adjustment mechanism is installed on the base, and the height and curvature of the first stripping plate and the second stripping plate are adjusted by the lifting curvature adjustment mechanism; after the lifting curvature adjustment mechanism adjusts the height and curvature, the gap between the first stripping plate and the second stripping plate and the gap between the two first stripping plates are filled respectively by the first splicing plate and the second splicing plate.

[0005] Furthermore, the lifting and lowering adjustment assembly includes a first hydraulic rod installed on both sides of the front and rear ends of the top of the base, a second hydraulic rod is provided on the side away from each other of the two first hydraulic rods on the same end, and the four second hydraulic rods are respectively installed at the four corners of the base. The upper ends of the two first hydraulic rods on the same side are provided with the same first support plate, and the upper ends of the two second hydraulic rods on the same side are provided with the same second support plate, and the output shafts of the two first hydraulic rods on the same side are respectively movably hinged to the front and rear ends of the first support plate, and the output shafts of the two second hydraulic rods on the same side are respectively movably hinged to the front and rear ends of the second support plate.

[0006] Furthermore, a first mounting groove is provided on the end surfaces of the two first support plates away from each other, and a second mounting groove is provided on the end surfaces of the two second support plates away from each other. The top surface of the first mounting groove is provided with a plurality of first guide openings arranged at equal intervals, and the top surface of the second mounting groove is provided with a plurality of second guide openings arranged at equal intervals; a first connecting plate is provided in the first mounting groove, and a plurality of first guide plates arranged at equal intervals are installed on the top surface of the first connecting plate, and the first guide plate is placed in the first guide opening and slides; a second connecting plate is provided in the second mounting groove, and a plurality of second guide plates arranged at equal intervals are installed on the top surface of the second connecting plate, and the second guide plate is placed in the second guide opening and slides.

[0007] Furthermore, the first stripping plate is connected to the first support plate and the first connecting plate on the same side by bolts, and the second stripping plate is connected to the second support plate and the second connecting plate on the same side by bolts; the first connecting plate and the second support plate on the same side are connected by bolts, and the first connecting plate and the second connecting plate are rubber plates.

[0008] Furthermore, a first sliding groove is provided on the bottom surface of the first installation groove, and a second sliding groove is provided on the bottom surface of the second installation groove; a first slide is installed on the bottom surface of the first connecting plate, and the first slide is placed in the first sliding groove and slides; a second slide is installed on the bottom surface of the second connecting plate, and the second slide is placed in the second sliding groove and slides.

[0009] Furthermore, the curvature adjustment assembly includes guide rails installed laterally on both sides of the middle part of the top surface of the base, and a first moving block and a second moving block are slidably connected in the guide rails, the upper end of the first moving block is vertically rotatably connected to the first screw rod, the upper end of the first screw rod is threadedly connected to the first lifting cylinder, the upper end of the first lifting cylinder is movably hinged to one end of the bottom surface of the first slide plate, the upper end of the second moving block is vertically rotatably connected to the second screw rod, the upper end of the second screw rod is threadedly connected to the second lifting cylinder, and the upper end of the second lifting cylinder is movably hinged to one end of the bottom surface of the second slide plate.

[0010] Furthermore, a first gear is installed at the lower end of the first screw rod, a second gear is installed at the lower end of the second screw rod, and a rack is installed horizontally at the front end of the top surface of the guide rail, and the rack is meshed with the first gear and the second gear respectively; a bidirectional screw rod is horizontally provided in the middle of the upper end of the base, and the two ends of the bidirectional screw rod are respectively placed in the two guide rails for rotation, and the two ends of the bidirectional screw rod are respectively threadedly connected with the two first moving blocks and the two second moving blocks; a worm wheel is installed in the middle of the bidirectional screw rod, and the upper end of the worm wheel is meshed with a worm, and the front end of the worm rod is connected to a motor through a coupling, and the motor is installed on the base.

[0011] Furthermore, cavities are provided inside the first connecting plate and the second connecting plate, a plurality of supporting rollers are rotatably connected in each cavity, and hinges are connected at both ends of two adjacent supporting rollers.

[0012] Furthermore, the supporting device also includes a demolding airbag, which is installed on the first demolding plate and the second demolding plate, and is connected to a first air pump through a first air pipe. The first air pump is installed on the base, and a plurality of equidistantly arranged supporting airbags are installed at the front and rear ends of the bottom of the base. The connecting port of the supporting airbag is installed with a solenoid valve, and the solenoid valve is connected to a second air pump through a second air pipe. The second air pump is installed on the base; an XY-axis level is installed on the top surface of the base.

[0013] Furthermore, the front and rear ends of the first lifting cylinder are rotatably connected to the third hydraulic rod, and the front and rear ends of the second lifting cylinder are rotatably connected to the fourth hydraulic rod. The output shafts of the third hydraulic rod and the fourth hydraulic rod pass through the base, and straight slots matching the third hydraulic rod and the fourth hydraulic rod are respectively provided at both ends of the top surface of the base, and the output shafts of the third hydraulic rod and the fourth hydraulic rod are rotatably connected to the first limit rod and the second limit rod. The first limit rod and the second limit rod are both L-shaped, and the first gear and the second gear are both provided with a plurality of equidistant limit grooves, and the bottom of the first limit rod and the bottom of the second limit rod are respectively placed in the corresponding limit grooves; the first limit rod and the second limit rod are controlled by the third hydraulic rod and the fourth hydraulic rod to limit the first gear and the second gear.

[0014] The beneficial effects of the present invention compared to the prior art are: 1. The present invention realizes precise and flexible adjustment of height and curvature through the lifting and curvature adjustment mechanism: in the lifting and adjustment assembly, the combination of the first hydraulic rod and the second hydraulic rod can quickly and stably adjust the height of the support device according to the size of different arch bridges; at the same time, in conjunction with the curvature adjustment assembly, the guide rail, movable block, lifting cylinder and other components cooperate with each other to accurately adjust the curvature of the support surface; this flexible and precise adjustment of height and curvature greatly improves the applicability compared with traditional fixed structure support devices, and can meet the reinforcement requirements of arch bridge bottom molds of various complex shapes and sizes, providing strong support for the diversified design and construction of arch bridges.

[0015] 2. After completing the height and curvature adjustment, the present invention can accurately fill the gap between the first stripper plate and the second stripper plate, as well as the gap between the first stripper plates, through the splicing plate, so that the entire support surface forms a continuous and complete structure; this not only enhances the stability of the support device and avoids the stress concentration problem caused by the gap, but also ensures that the arch bridge bottom formwork can be evenly stressed during the casting process, effectively improving the molding quality of the bottom formwork; compared with traditional support devices that require additional complex sealing or filling measures, the splicing structure of the present invention is simple and efficient, reducing construction difficulty and cost.

[0016] 3. The present invention gives the supporting device the function of intelligent horizontal adjustment through the coordinated work of the supporting airbag, solenoid valve, second air pump and XY-axis level; during the casting process of the arch bridge bottom form, when the weights on both sides of the device are inconsistent and the degree of depression is different, the XY-axis level can monitor the horizontal state of the device in real time; once the horizontal deviation is detected, the expansion degree of the supporting airbag is controlled by the solenoid valve, and the height of both ends of the device can be quickly adjusted to restore it to the level; this intelligent adjustment mechanism can effectively avoid bottom form casting quality problems caused by the tilt of the device, such as uneven concrete thickness, cracks, etc., and can also prevent the overall sinking of the device, thereby ensuring the safety and stability of the construction process.

[0017] 4. The present invention realizes rapid demolding after the bottom mold is formed through the cooperation of the demolding airbag and the first air pump; a three-dimensional fixed double locking mechanism is formed by the third hydraulic rod and the fourth hydraulic rod in cooperation with the first limit rod and the second limit rod, thereby improving the overall wind and earthquake resistance of the device and avoiding structural displacement of the device; the depth of the third hydraulic rod and the fourth hydraulic rod inserted into the soil can be adjusted according to the geological conditions, and cooperate with the L-shaped limit rod to clamp the first gear and the second gear, thereby locking the gear rotation, thereby greatly improving the overall anti-overturning moment capacity of the device and effectively improving the anti-slip ability of the device.

[0018] 5. The present invention plays an important role in adjusting the height and curvature through the supporting rollers and hinge structure arranged inside the first connecting plate and the second connecting plate; when the connecting plate bends, the supporting rollers rotate through the hinges, which can effectively increase the supporting strength of the connecting plate and prevent the connecting plate from being deformed or damaged during the force-bearing process; this structural design greatly enhances the bearing capacity of the supporting device while ensuring its flexibility, ensuring that it can work stably and reliably during the reinforcement process of the arch bridge bottom formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the lifting arc adjustment mechanism of the present invention; Figure 3This is a schematic diagram of the connection structure between the first connecting plate and the first supporting plate of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the curvature adjustment component of the present invention; Figure 5 This is a schematic structural diagram of the connection between the second support plate and the second connecting plate of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the second support plate and the first connecting plate of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the first stripping plate and the second stripping plate of the present invention; Figure 8 Schematic diagram of the cross-sectional structure of the first stripping plate and the second stripping plate of the present invention: Figure 9 This is a schematic structural diagram of the support roller of the present invention: Figure 10 For the present invention Figure 4 A magnified schematic diagram of the structure of part A in the middle; Figure 11 For the present invention Figure 5 A magnified schematic diagram of the structure of part B in the middle; Figure 12 For the present invention Figure 9 A magnified schematic diagram of the structure of the middle C part; Figure 13 It is a structural schematic diagram of the fourth hydraulic rod and the second limiting rod of the present invention.

[0020] Serial numbers in the figure: 1, base; 2, first stripping plate; 3, second stripping plate; 4, first splicing plate; 5, second splicing plate; 6, first hydraulic rod; 7, second hydraulic rod; 8, first support plate; 9, second support plate; 10, first connecting plate; 11, first guide plate; 12, second connecting plate; 13, second guide plate; 14, first chute; 15, first slide plate; 16, second chute; 17, second slide plate; 18, first lifting cylinder; 19, first screw rod; 20, first gear; 21, second lifting cylinder Lowering cylinder; 22. Second screw rod; 23. Second gear; 24. Guide rail; 25. First moving block; 26. Second moving block; 27. Rack; 28. Bidirectional screw rod; 29. ​​Worm gear; 30. Worm; 31. Motor; 32. Support roller; 33. Hinge; 34. Demolding airbag; 35. First air pump; 36. Solenoid valve; 37. Support airbag; 38. Second air pump; 39. XY-axis level; 40. Third hydraulic rod; 41. Fourth hydraulic rod; 42. First limit rod; 43. Second limit rod. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. The technical solutions of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0022] See also Figures 1 to 13 This embodiment proposes a support device for reinforcing the bottom formwork of an arch bridge, comprising a base 1, with first stripper plates 2 symmetrically provided on both sides of the upper end of the base 1, and second stripper plates 3 provided at ends of the two first stripper plates 2 that are spaced apart from each other. When constructing an arch bridge, the arch opening of the arch bridge is supported by the first stripper plates 2 and the second stripper plates 3; a first splicing plate 4 is clamped between the first stripper plates 2 and the second stripper plates 3 on the same side, and a second splicing plate 5 is clamped between the two first stripper plates 2. A lifting and curvature adjustment mechanism is provided at the upper end of the base 1, and the lifting and curvature adjustment mechanism is divided into a lifting and curvature adjustment component and a curvature adjustment component; the lifting and curvature adjustment mechanism is mounted on the base 1; after the lifting and curvature adjustment mechanism adjusts the height and curvature, the first splicing plate 4 and the second splicing plate 5 fill the gap between the first stripper plate 2 and the second stripper plate 3, and the gap between the two first stripper plates 2, respectively.

[0023] The first splicing plate 4 and the second splicing plate 5 solve the problem of discontinuous support surfaces of traditional support devices. The first splicing plate 4 and the second splicing plate 5 are made of aluminum-magnesium-manganese alloy plates, which can be quickly and accurately connected to the first stripper plate 2 and the second stripper plate 3, thereby improving the overall structural strength. During the splicing process, the surfaces of the first splicing plate 4 and the second splicing plate 5 are also provided with a flexible sealing layer. The flexible sealing layer is made of EPDM rubber and has a thickness of 3mm. It can fill gaps of 0.5 to 2mm, prevent leakage of concrete slurry, ensure the surface flatness of the bottom formwork (error ≤ 2mm), avoid subsequent roughening treatment, and improve the quality of concrete forming. It can effectively fill small gaps to form a complete support surface without stress concentration points. In the construction of a large arch bridge, when using traditional support devices, local deformation of the concrete after pouring due to gaps in the support surface caused repair. However, after adopting the splicing structure of the present invention, the concrete is poured and formed in one step, and the surface flatness reaches an extremely high standard. This not only saves the cost of subsequent repairs, but also improves the overall strength and service life of the bottom formwork, and improves construction efficiency by more than 30%.

[0024] The lifting and lowering adjustment assembly includes a first hydraulic rod 6 installed on both sides of the front and rear ends of the top of the base 1, a second hydraulic rod 7 is provided on the side away from each other of the two first hydraulic rods 6 at the same end, and four second hydraulic rods 7 are respectively installed at the four corners of the base 1, and the upper ends of the two first hydraulic rods 6 on the same side are provided with the same first support plate 8, and the upper ends of the two second hydraulic rods 7 on the same side are provided with the same second support plate 9, and the output shafts of the two first hydraulic rods 6 on the same side are movably hinged to the front and rear ends of the first support plate 8, and the output shafts of the two second hydraulic rods 7 on the same side are movably hinged to the front and rear ends of the second support plate 9; the first hydraulic rod 6 and the second hydraulic rod 7 are conveniently used to adjust the height according to the size of the arch bridge to be built, as well as to adjust the arc to a smaller extent; when in use, the first hydraulic rod 6 and the second hydraulic rod 7 are connected by a precise hydraulic control system, which can achieve millimeter-level height fine-tuning according to the actual needs of the arch bridge construction; when it is necessary to build the bottom formwork of a large arch bridge When the hydraulic rod 6 and the second hydraulic rod 7 are extended synchronously and quickly, the support device can be raised to the specified height in just a few minutes. In the construction of small arch bridges, by individually controlling the extension and retraction of each hydraulic rod, the lower construction height requirements can be accurately matched. The two first support plates 8 are provided with a first mounting groove on the side away from each other, and the two second support plates 9 are provided with a second mounting groove on the side away from each other. The top surface of the first mounting groove is provided with a plurality of equidistantly arranged first guide openings, and the top surface of the second mounting groove is provided with a plurality of equidistantly arranged second guide openings. A first connecting plate 10 is provided in the first mounting groove, and a plurality of equidistantly arranged first guide plates 11 are installed on the top surface of the first connecting plate 10. The first guide plates 11 are placed in the first guide opening and slide. A second connecting plate 12 is provided in the second mounting groove, and a plurality of equidistantly arranged second guide plates 13 are installed on the top surface of the second connecting plate 12. The second guide plates 13 are placed in the second guide opening and slide. The first guide plates 11 facilitate the movement and guidance of the first connecting plate 10, and the second guide plates 13 facilitate the movement and guidance of the second connecting plate 12.

[0025] The first stripper plate 2 is bolted to the first support plate 8 and first connecting plate 10 on the same side. The second stripper plate 3 is bolted to the second support plate 9 and second connecting plate 12 on the same side. The first support plate 8 and first connecting plate 10 facilitate support for the first stripper plate 2, while the second support plate 9 and second connecting plate 12 facilitate support for the second stripper plate 3. The first connecting plate 10 and second support plate 9 on the same side are bolted together. The first connecting plate 10 and second connecting plate 12 are made of rubber sheets.

[0026] The first mounting groove has a first slide groove 14 formed on its bottom surface, and the second mounting groove has a second slide groove 16 formed on its bottom surface. A first slide plate 15 is mounted on the bottom surface of the first connecting plate 10 and slides in the first slide groove 14. A second slide plate 17 is mounted on the bottom surface of the second connecting plate 12 and slides in the second slide groove 16.

[0027] The radian adjustment assembly includes a guide rail 24 installed horizontally on both sides of the middle of the top surface of the base 1, and a first moving block 25 and a second moving block 26 are slidably connected in the guide rail 24. The upper end of the first moving block 25 is vertically rotatably connected to the first screw rod 19, and the upper end of the first screw rod 19 is threadedly connected to the first lifting cylinder 18. The upper end of the first lifting cylinder 18 is movably hinged to one end of the bottom surface of the first slide 15, and the upper end of the second moving block 26 is vertically rotatably connected to the second screw rod 22, and the upper end of the second screw rod 22 is threadedly connected to the second lifting cylinder 21. The upper end of the second lifting cylinder 21 is connected to the second slide One end of the bottom surface of the plate 17 is movably hinged; the guide rail 24 facilitates the sliding of the first movable block 25 and the second movable block 26; the first movable block 25 facilitates the control of the movement of the first screw rod 19; the second movable block 26 facilitates the control of the movement of the second screw rod 22; the first screw rod 19 facilitates the control of the lifting and lowering of the first lifting cylinder 18; the second screw rod 22 facilitates the control of the lifting and lowering of the second lifting cylinder 21; the first lifting cylinder 18 facilitates the control of the curvature adjustment of the first connecting plate 10; the second lifting cylinder 21 facilitates the control of the curvature adjustment of the second connecting plate 12.

[0028] A first gear 20 is installed at the lower end of the first screw rod 19, a second gear 23 is installed at the lower end of the second screw rod 22, and a rack 27 is installed horizontally at the front end of the top of the guide rail 24. The rack 27 is engaged with the first gear 20 and the second gear 23 for transmission respectively; the first gear 20 is used to control the rotation of the first screw rod 19; the second gear 23 is used to control the rotation of the second screw rod 22; the rack 27 is used to control the rotation of the first gear 20 and the second gear 23; a bidirectional screw rod 28 is provided horizontally in the middle of the upper end of the base 1, and the two ends of the bidirectional screw rod 28 are respectively placed in the two guide rails 24 for rotation. The two ends of the bidirectional screw rod 28 are respectively threadedly connected to the two first moving blocks 25 and the two second moving blocks 26; a worm gear 29 is installed in the middle of the bidirectional screw rod 28, and the upper end of the worm gear 29 is engaged with a worm 30, and the front end of the worm 30 is connected to a motor 31 through a coupling, and the motor 31 is installed on the base 1; the bidirectional screw rod 28 is used to facilitate the movement of the first moving block 25 and the second moving block 26; the worm gear 29 is used to facilitate the rotation of the bidirectional screw rod 28; the worm gear 30 is used to facilitate the rotation of the worm gear 29 and realize self-locking; the motor 31 is used to facilitate the rotation of the worm 30.

[0029] In terms of curvature adjustment, the sliding cooperation between the guide rail 24 and the first moving block 25 and the second moving block 26, combined with the spiral transmission of the first screw 19 and the second screw 22, forms a precise curvature adjustment system; the operator can control the motor 31 to drive the worm 30 and the worm wheel 29, thereby driving the bidirectional screw 28 to rotate, control the precise displacement of the first moving block 25 and the second moving block 26 on the guide rail 24, and then adjust the curvature of the support surface through the first lifting cylinder 18 and the second lifting cylinder 21; taking the construction of existing special-shaped arch bridges as an example, traditional support devices require several days and multiple attempts to adjust to an approximate curvature; and this device reduces errors through precise adjustment of the lifting adjustment components and the curvature adjustment components, improves construction efficiency and accuracy, and provides strong technical support for the implementation of complex arch bridge designs.

[0030] A cavity is provided inside the first connecting plate 10 and the second connecting plate 12, and a plurality of supporting rollers 32 are rotatably connected in each cavity, and hinges 33 are connected at both ends of two adjacent supporting rollers 32; the supporting rollers 32 and hinges 33 structure inside the first connecting plate 10 and the second connecting plate 12 is the key to improving the strength of the supporting device; the supporting rollers 32 are made of high-strength alloy steel and have undergone a special surface treatment process to make their surface hardness reach HRC60 or above, which can withstand huge pressure; when the first connecting plate 10 or the second connecting plate 12 is bent, the hinges 33 enable it to achieve flexible rotation at multiple angles , while maintaining stable connection strength; in actual application, this structural design ensures that when the support device is subjected to a load of up to 500kN, the deformation of the first connecting plate 10 and the second connecting plate 12 is still less than 1mm, which is much lower than the deformation of the traditional support device; in the construction of a heavy-loaded traffic arch bridge, the support device of the present invention successfully supported the bottom formwork and concrete pouring weight weighing 300 tons, while the traditional support device experienced structural deformation or even local damage under the same conditions, which fully demonstrated the excellent performance of the present invention in enhancing support strength and provided reliable technical guarantee for the construction of large and heavy-loaded arch bridges.

[0031] The supporting device also includes a demoulding airbag 34, which is installed on the first demoulding plate 2 and the second demoulding plate 3, and the demoulding airbag 34 is connected to the first air pump 35 through a first air pipe, the first air pump 35 is installed on the base 1, and a plurality of equidistantly arranged supporting airbags 37 are installed at the front and rear ends of the bottom of the base 1, and the connecting port of the supporting airbag 37 is installed with a solenoid valve 36, the solenoid valve 36 is connected to the second air pump 38 through a second air pipe, and the second air pump 38 is installed on the base 1; an XY axis level 39 is installed on the top surface of the base 1; the combined design of the demoulding airbag 34 and the first air pump 35 completely changes the traditional demoulding method; the demoulding airbag 34 adopts a high-elasticity, high-strength composite material, and its thickness in the uninflated state is only 5mm, which can fit tightly on The support device and the bottom mold do not affect the casting quality of the bottom mold; when the bottom mold is formed, the demoulding airbag 34 is inflated by the first air pump 35, and the demoulding airbag 34 will expand rapidly, generating a uniform thrust to separate the bottom mold from the support device; this demoulding method is not only fast, with a demoulding process taking only 1 to 2 minutes, but also has a uniform force on the bottom mold, and will not produce local stress concentration, effectively avoiding problems such as cracks and breakage in the bottom mold during the demoulding process; in multiple repeated use tests, the service life of the bottom mold using the demoulding technology of the present invention was extended by more than 50%, while reducing the labor cost required for manual demoulding, and a single project can save about 200,000 yuan in demoulding costs; the support airbag 37 is used to facilitate adjustment of the device height, so that the device always remains fixed Height; through the cooperation of the support airbag 37 and the electromagnetic valve 36, it is convenient to ensure that the device is at the same horizontal height. The support airbag 37, the electromagnetic valve 36, the second air pump 38 and the XY axis level 39 cooperate to form an intelligent level adjustment system, which realizes the dynamic balance of the support device during the construction process; the XY axis level 39 adopts high-precision laser sensing technology, which can monitor the tilt angle of the support device in the X-axis and Y-axis directions in real time, with a monitoring frequency of up to 100 times per second; once it is detected that the tilt angle exceeds the preset threshold (such as 0.3°), the system will immediately control the second air pump 38 to inflate or deflate the corresponding support airbag 37 through the electromagnetic valve 36; the support airbag 37 is an existing structure, and the support airbag 37 adopts existing high-strength elastic material The material and layered structure design can automatically adjust the degree of deformation according to the stress conditions during the inflation process to ensure that the device rises or falls smoothly. Taking the construction of a cross-river arch bridge as an example, during the concrete pouring process, one side of the device tilted due to the impact of water flow. The traditional support device may require manual intervention for adjustment, which is time-consuming and poses a safety hazard. The device automatically completes the correction of the tilt angle within 2 seconds, ensuring the continuity and safety of construction, effectively avoiding concrete pouring defects caused by tilt, and improving the quality of the project. The solenoid valve 36 and the second air pump 38 are used to easily control the single support airbag 37 to support the device, so that the device is always kept in a horizontal state. The XY axis level 39 is used to monitor whether the device is in a horizontal state.

[0032] The front and rear ends of the first lifting cylinder 18 are rotatably connected to the third hydraulic rod 40, and the front and rear ends of the second lifting cylinder 21 are rotatably connected to the fourth hydraulic rod 41. The output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 pass through the base 1, and straight grooves matching the third hydraulic rod 40 and the fourth hydraulic rod 41 are respectively provided at both ends of the top surface of the base 1, and the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 are rotatably connected to the first limiting rod 42 and the second limiting rod 43. The first limiting rod 42 and the second limiting rod 43 are both L-shaped, and the first gear 20 and the second gear 23 are both provided with a plurality of equidistant limiting grooves, and the other ends of the first limiting rod 42 and the second limiting rod 43 are placed in the limiting grooves; the first limiting rod 42 and the second limiting rod 43 are controlled by the third hydraulic rod 40 and the fourth hydraulic rod 41, thereby limiting the first gear 20 and the second gear 23.

[0033] The present invention also proposes a method for using a support device for reinforcing an arch bridge bottom formwork, comprising the following steps: Step 1: First, power on the equipment and perform initial preparations. Connect the motor 31 to the wire and power it on to complete the power access of the equipment. At this time, the device is in the waiting state, ready for subsequent height and curvature adjustments. Activate the motor 31 through the power system to provide a power source for the entire mechanical transmission structure, ensuring that subsequent power components have the operating conditions. The setting of the waiting state puts the device in a controllable initial working condition, which is convenient for construction personnel to accurately start each functional module according to on-site needs and avoid safety hazards caused by unexpected actions.

[0034] Step 2: Then, perform preliminary height adjustment by starting the first hydraulic rod 6 and the second hydraulic rod 7. These two hydraulic rods are respectively installed on both sides and the four corners of the front and rear ends of the top of the base 1; since the output shafts of the two first hydraulic rods 6 on the same side are respectively movably hinged to the front and rear ends of the first support plate 8, and the output shafts of the two second hydraulic rods 7 on the same side are respectively movably hinged to the front and rear ends of the second support plate 9, the first support plate 8 and the second support plate 9 can be controlled to rise and fall by the extension and retraction of the first hydraulic rod 6 and the second hydraulic rod 7, thereby realizing preliminary adjustment of the support height of the device to adapt to different arch bridge construction conditions. Height requirement; Since the hydraulic drive system (first hydraulic rod 6, second hydraulic rod 7) has the characteristics of large thrust and convenient speed regulation, the coordinated extension and contraction of four groups of hydraulic rods (two groups at the front and rear ends) can realize three-dimensional adjustment of the support height (independent lifting of the front and rear ends), meeting the support requirements of the bottom formwork of arch bridges with different spans and different rises; through the movable hinge structure (first hydraulic rod 6 and first support plate 8, second hydraulic rod 7 and second support plate 9), each support plate is allowed to swing slightly during the lifting process, avoiding stress concentration caused by rigid connection, while ensuring the hinge matching accuracy of the support plate and the subsequent connecting plate.

[0035] Step three, when the first support plate 8 and the second support plate 9 are lifted and lowered at the same time, the motor 31 is started; the motor 31 is connected to the worm 30 through a coupling, driving the worm 30 to rotate; the worm 30 is meshed with the worm wheel 29 for transmission, thereby causing the worm wheel 29 to rotate, and the worm wheel 29 is installed in the middle of the bidirectional screw rod 28, so the bidirectional screw rod 28 starts to rotate; since the two ends of the bidirectional screw rod 28 are respectively threadedly connected to the two first moving blocks 25 and the two second moving blocks 26, and the first moving block 25 and the second moving block 26 slide in the guide rail 24, the rotation of the bidirectional screw rod 28 controls the first moving block 25 and the second moving block 26 to move in the guide rail 24, thereby driving the second moving block 26 installed on the upper end of the first moving block 25 The first screw 19 and the second screw 22 at the upper end of the second movable block 26 move; since the worm 30 and the worm wheel 29 have a self-locking function and a large transmission ratio characteristic, the high-speed rotation of the motor 31 can be converted into a low-speed and high-precision linear motion of the first screw 19 and the second screw 22, ensuring that the positioning accuracy error of the first movable block 25 and the second movable block 26 is ≤0.5mm; the bidirectional screw 28 enables the first movable block 25 and the second movable block 26 to move synchronously in opposite directions, and cooperates with the linear guiding effect of the guide rail 24 to realize the horizontal spacing adjustment of the first screw 19 and the second screw 22, providing a basic displacement for the subsequent curvature adjustment. The synchronization error of the transmission structure is less than 1%, which ensures the consistency of the adjustment on both sides of the support surface.

[0036] Step 4: Then, during the movement of the first screw rod 19 and the second screw rod 22, the first gear 20 and the second gear 23 installed at their lower ends are engaged with the rack 27 installed laterally at the front end of the top of the guide rail 24, so the first gear 20 and the second gear 23 rotate, thereby driving the first screw rod 19 and the second screw rod 22 to rotate; and because the upper end of the first screw rod 19 is threadedly connected to the first lifting cylinder 18, the upper end of the second screw rod 22 is threadedly connected to the second lifting cylinder 21, and the upper end of the first lifting cylinder 18 is movably hinged to one end of the bottom surface of the first slide 15, and the upper end of the second lifting cylinder 21 is movably hinged to one end of the bottom surface of the second slide 17, the rotation of the first screw rod 19 and the second screw rod 22 causes the first lifting cylinder 18 and the second lifting cylinder 21 to rise and fall during the movement, thereby cooperating with the first support plate 8 and the second support plate 9 The curvature of the supporting surface is adjusted by lifting and lowering; the horizontal displacement of the first moving block 25 and the second moving block 26 is converted into the rotational motion of the first screw rod 19 and the second screw rod 22 through the cooperation of the first screw rod 19, the second screw rod 22 and the first lifting cylinder 18 and the second lifting cylinder 21, which converts the rotational motion into vertical lifting motion, forming a motion conversion mode of "horizontal displacement → rotation → vertical lifting", which can accurately control the height difference of each hinge point of the supporting surface (accuracy of 0.1mm), thereby fitting a circular arc curve with a radius of 5 to 50 meters, meeting the construction requirements of different arch bridge curvatures; the movable hinged slide structure (first slide 15, second slide 17) allows the supporting surface to form a continuous curved surface during the adjustment process, avoiding the corner defects caused by rigid connection.

[0037] Step five, then perform position locking and support strength enhancement operations. When the height and curvature are adjusted, stop the lifting of the first hydraulic rod 6 and the second hydraulic rod 7 and the rotation of the motor 31. At this time, due to the self-locking characteristics of the worm gear 29 and the worm 30, the positions of the first screw rod 19 and the second screw rod 22 can be locked, thereby fixing the height of the first lifting cylinder 18 and the second lifting cylinder 21, and then controlling the height and curvature of the first support plate 8, the second support plate 9, the first connecting plate 10 and the second connecting plate 12. When the first connecting plate 10 and the second connecting plate 12 adjust their height and curvature respectively through the first lifting cylinder 18 and the second lifting cylinder 21, the supporting roller 32 inside them rotates through the hinge 33. This structural design increases the height of the first connecting cylinder 18 and the second lifting cylinder 21. The supporting strength of the connecting plate 10 and the second connecting plate 12 enables the device to withstand greater loads; the self-locking function of the worm wheel 29 and the worm 30 (automatically locking when the transmission efficiency is ≤30%) forms a mechanical hard lock to prevent the displacement of the screw (first screw 19, second screw 22) caused by construction vibration. After locking, the structural rigidity is increased by more than 60%; the supporting roller 32 is connected by a hinge 33 evenly distributed at 60°, which can convert concentrated loads into uniformly distributed loads. After mechanical testing, this structure increases the bending strength of the connecting plates (first connecting plate 10, second connecting plate 12) by 40% and the shear strength by 35%, and can withstand construction loads of 20 to 50 tons per square meter, meeting the bearing capacity requirements during C50 concrete pouring.

[0038] Step 6: Next, the first stripper plate 2 is bolted to the first support plate 8 and the first connecting plate 10, and the second stripper plate 3 is bolted to the second support plate 9 and the second connecting plate 12. Then, the first splicing plate 4 and the second splicing plate 5 are inserted into the corresponding gaps, namely the gap between the first stripper plate 2 and the second stripper plate 3 on the same side, and the gap between the two first stripper plates 2. The flexible sealing layer provided on the surface of the first splicing plate 4 and the second splicing plate 5 effectively fills the small gaps to form a complete support surface. Bolts are used to connect the first stripper plate 2 to the first support plate 8 and the first connecting plate 10, and the second stripper plate 3 to the second support plate 9 and the second connecting plate 12 to provide reliable mechanical fixation (with a pull-out force of ≥50 kN) to ensure that the formwork does not move during concrete vibration. The flexible sealing layer (made of EPDM rubber, 3 mm thick) used in the first splicing plate 4 and the second splicing plate 5 can fill the gap of 0.5 to 2 mm, prevent the leakage of concrete slurry, ensure the flatness of the bottom formwork surface (error ≤ 2 mm), avoid subsequent roughening, and improve the quality of concrete molding.

[0039] Step seven, then carry out the airbag system work and level adjustment, first install the demoulding airbag 34 on the first demoulding plate 2 and the second demoulding plate 3, and inflate the demoulding airbag 34 through the first air pump 35 to prepare for the subsequent demoulding; during the bottom mold casting process, when the weight on both sides of the device is inconsistent and causes the device to tilt, the XY axis level 39 monitors the horizontal degree of the device in real time; once it is detected that the tilt angle exceeds the preset threshold (±0.5°), the system immediately controls the second air pump 38 to inflate or deflate the corresponding support airbag 37 through the solenoid valve 36, and adjusts the expansion degree of the support airbag 37 to control the device to be at a horizontal height to ensure that the device is at a horizontal height during construction. dynamic balance; by pre-inflating the demoulding airbag 34 (pressure 0.3-0.5MPa), the demoulding can be quickly carried out after the initial setting of the concrete, reducing the bonding force between the formwork (first demoulding plate 2, second demoulding plate 3) and the concrete (demolding resistance is reduced by 70%), and avoiding damage to corners caused by traditional mechanical demoulding; the response time of the intelligent leveling system formed by the XY-axis level 39, the solenoid valve 36, the second air pump 38, and the supporting airbag 37 is ≤2 seconds. Through the dynamic compensation of the supporting airbag 37, the tilt angle of the device can be controlled within ±0.2°, effectively preventing deformation of the bottom formwork due to uneven settlement, and ensuring the symmetry and uniformity of force of the arch bridge structure.

[0040] Step eight, finally perform the locking operation. Since the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 both pass through the base 1, and the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 are rotatably connected with the first limiting rod 42 and the second limiting rod 43 (both L-shaped), the first gear 20 and the second gear 23 are limited, and the first screw rod 19 and the second screw rod 22 are locked; at the same time, the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 are inserted into the soil for positioning and locking, ensuring the stability of the device during construction.

[0041] Step nine, power off all equipment to complete the work preparation process of the entire support device; the third hydraulic rod 40, the fourth hydraulic rod 41 cooperates with the first limit rod 42 and the second limit rod 43 to form a three-dimensional fixed double locking mechanism, and can prevent the first lifting cylinder 18 and the second lifting cylinder 21 from being damaged due to overload after adjustment, thereby improving the overall wind and earthquake resistance of the device and avoiding structural displacement of the device (horizontal displacement ≤ 1mm); the insertion depth of the third hydraulic rod 40 and the fourth hydraulic rod 41 into the soil can be adjusted according to geological conditions (0.5 to 1.5 meters), and cooperate with the first limit rod 42 and the second limit rod 43 to clamp the gears (first gear 20, second gear 23) (contact area ≥ 80% of the tooth surface), so that the overall anti-overturning moment of the device is increased by 80% and the anti-slip ability is increased by 60%; the power-off process complies with the safety regulations of the construction site, avoids the risk of accidental touch in the standby state, and ensures the safety of construction personnel.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be considered that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the present invention, which should be regarded as belonging to the scope of patent protection determined by the submitted claims of the present invention.

Claims

1. A support device for reinforcing the bottom formwork of an arch bridge, characterized in that: The invention comprises a base (1), wherein first stripping plates (2) are symmetrically provided on both sides of the upper end of the base (1), and a second stripping plate (3) is provided at one end of the two first stripping plates (2) away from each other, and the arch hole of the arch bridge is supported by the first stripping plates (2) and the second stripping plates (3); a first splicing plate (4) is clamped between the first stripping plates (2) and the second stripping plates (3) on the same side, and a second splicing plate (5) is clamped between the two first stripping plates (2); a lifting arc adjustment mechanism is provided at the upper end of the base (1), and the lifting arc adjustment mechanism is divided into a lifting adjustment component and a curvature adjustment component; the lifting arc adjustment mechanism is installed on the base (1), and the height and curvature of the first stripping plates (2) and the second stripping plates (3) are adjusted by the lifting arc adjustment mechanism; after the lifting arc adjustment mechanism adjusts the height and curvature, the gap between the first stripping plates (2) and the second stripping plates (3) and the gap between the two first stripping plates (2) are filled by the first splicing plate (4) and the second splicing plate (5).

2. A supporting device for reinforcing an arch bridge bottom formwork according to claim 1, characterized in that: The lifting and adjusting assembly comprises a first hydraulic rod (6) mounted on both sides of the front and rear ends of the top of the base (1); a second hydraulic rod (7) is provided on the side away from each other of the two first hydraulic rods (6) on the same end; four second hydraulic rods (7) are respectively mounted on the four corners of the base (1); the upper ends of the two first hydraulic rods (6) on the same side are provided with a same first support plate (8); the upper ends of the two second hydraulic rods (7) on the same side are provided with a same second support plate (9); the output shafts of the two first hydraulic rods (6) on the same side are respectively movably hinged to the front and rear ends of the first support plate (8); and the output shafts of the two second hydraulic rods (7) on the same side are respectively movably hinged to the front and rear ends of the second support plate (9).

3. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 2, characterized in that: A first mounting groove is provided on the end surfaces of the two first support plates (8) away from each other, and a second mounting groove is provided on the end surfaces of the two second support plates (9) away from each other. A plurality of first guide openings arranged at equal intervals are provided on the top surface of the first mounting groove, and a plurality of second guide openings arranged at equal intervals are provided on the top surface of the second mounting groove. A first connecting plate (10) is provided in the first mounting groove, and a plurality of first guide plates (11) arranged at equal intervals are installed on the top surface of the first connecting plate (10). The first guide plate (11) is placed in the first guide opening and slides. A second connecting plate (12) is provided in the second mounting groove, and a plurality of second guide plates (13) arranged at equal intervals are installed on the top surface of the second connecting plate (12). The second guide plate (13) is placed in the second guide opening and slides.

4. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 3, characterized in that: The first stripping plate (2) is connected to the first support plate (8) and the first connecting plate (10) on the same side by bolts, and the second stripping plate (3) is connected to the second support plate (9) and the second connecting plate (12) on the same side by bolts; the first connecting plate (10) and the second support plate (9) on the same side are connected by bolts, and the first connecting plate (10) and the second connecting plate (12) are rubber plates.

5. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 4, characterized in that: A first slide groove (14) is provided on the inner bottom surface of the first installation groove, and a second slide groove (16) is provided on the inner bottom surface of the second installation groove; a first slide plate (15) is installed on the bottom surface of the first connecting plate (10), and the first slide plate (15) is placed in the first slide groove (14) for sliding; a second slide plate (17) is installed on the bottom surface of the second connecting plate (12), and the second slide plate (17) is placed in the second slide groove (16) for sliding.

6. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 5, characterized in that: The radian adjustment assembly includes a guide rail (24) installed laterally on both sides of the middle of the top surface of the base (1), a first moving block (25) and a second moving block (26) are slidably connected in the guide rail (24), the upper end of the first moving block (25) is vertically rotatably connected to the first screw rod (19), the upper end of the first screw rod (19) is threadedly connected to the first lifting cylinder (18), the upper end of the first lifting cylinder (18) is movably hinged to one end of the bottom surface of the first slide plate (15), the upper end of the second moving block (26) is vertically rotatably connected to the second screw rod (22), the upper end of the second screw rod (22) is threadedly connected to the second lifting cylinder (21), and the upper end of the second lifting cylinder (21) is movably hinged to one end of the bottom surface of the second slide plate (17).

7. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 6, characterized in that: A first gear (20) is installed at the lower end of the first screw rod (19), a second gear (23) is installed at the lower end of the second screw rod (22), and a rack (27) is installed transversely at the front end of the top of the guide rail (24), and the rack (27) is respectively engaged with the first gear (20) and the second gear (23) for transmission; a bidirectional screw rod (28) is transversely provided at the middle of the upper end of the base (1), and the two ends of the bidirectional screw rod (28) are respectively placed in the two guide rails (24) for rotation, and the two ends of the bidirectional screw rod (28) are respectively threadedly connected to the two first moving blocks (25) and the two second moving blocks (26); a worm wheel (29) is installed in the middle of the bidirectional screw rod (28), and the upper end of the worm wheel (29) is engaged with a worm (30) for transmission, and the front end of the worm wheel (30) is connected to a motor (31) through a coupling, and the motor (31) is installed on the base (1).

8. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 3, characterized in that: A cavity is provided inside the first connecting plate (10) and the second connecting plate (12), and a plurality of supporting rollers (32) are rotatably connected in each cavity, with hinges (33) connected at both ends of two adjacent supporting rollers (32).

9. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 1, characterized in that: The supporting device further comprises a demoulding airbag (34), the demoulding airbag (34) being mounted on the first demoulding plate (2) and the second demoulding plate (3), and the demoulding airbag (34) being connected to a first air pump (35) via a first air pipe, the first air pump (35) being mounted on the base (1), and a plurality of support airbags (37) being arranged equidistantly at the front and rear ends of the bottom of the base (1), a solenoid valve (36) being mounted on the connection port of the support airbag (37), the solenoid valve (36) being connected to a second air pump (38) via a second air pipe, the second air pump (38) being mounted on the base (1); and an XY axis level (39) being mounted on the top surface of the base (1).

10. The supporting device for reinforcing the bottom formwork of an arch bridge according to claim 7, characterized in that: The front and rear ends of the first lifting cylinder (18) are rotatably connected to the third hydraulic rod (40), and the front and rear ends of the second lifting cylinder (21) are rotatably connected to the fourth hydraulic rod (41). The output shafts of the third hydraulic rod (40) and the fourth hydraulic rod (41) pass through the base (1). Straight slots for matching the third hydraulic rod (40) and the fourth hydraulic rod (41) are respectively opened at both ends of the top surface of the base (1), and the output shafts of the third hydraulic rod (40) and the fourth hydraulic rod (41) are rotatably connected to the first limit rod (42) and the second limit rod (43). The limiting rod (43), the first limiting rod (42) and the second limiting rod (43) are all L-shaped, the first gear (20) and the second gear (23) are both provided with a plurality of limiting grooves arranged at equal intervals, and the bottom of the first limiting rod (42) and the bottom of the second limiting rod (43) are respectively placed in the corresponding limiting grooves; the first limiting rod (42) and the second limiting rod (43) are controlled by the third hydraulic rod (40) and the fourth hydraulic rod (41) to limit the first gear (20) and the second gear (23).

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