A support device for reinforcing a bottom form of an arch bridge

Abstract

The application discloses a kind of support devices for arch bridge bottom mould reinforcement, belong to arch bridge bottom mould technical field;Support device includes pedestal, first stripping plate is symmetrically equipped on the upper end of pedestal, two first stripping plates are equipped with second stripping plate at the end of mutual distance, and first splicing plate is clamped between the first stripping plate and second stripping plate of same side, and second splicing plate is clamped between two first stripping plates;Lifting camber adjusting mechanism is equipped on the upper end of pedestal, and the height and camber of first stripping plate and second stripping plate are adjusted by lifting camber adjusting mechanism;The gap between first stripping plate and second stripping plate and the gap between two first stripping plates are filled by first splicing plate and second splicing plate respectively;The support device can be flexibly and accurately adjusted in height and camber, and can meet the arch bridge bottom mould reinforcement needs of various complex shapes and sizes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of arch bridge bottom mold, and particularly relates to a supporting device for reinforcing an arch bridge bottom mold. BACKGROUND

[0002] An arch bridge takes an arch as a main load-bearing component. In the construction process, the bottom mold needs to bear the weight and pressure of concrete pouring, as well as the subsequent structure dead weight and use load. The traditional simple supporting mode is difficult to meet the construction requirements, and is prone to cause the deformation and sinking of the bottom mold, thereby affecting the shape and structure quality of the arch bridge. With the development of traffic construction, higher requirements are put forward for the construction efficiency and quality of the arch bridge. The supporting device needs to be quickly installed and disassembled to speed up the construction progress, and meanwhile, the stability and precision of the bottom mold need to be ensured to ensure the quality of the arch bridge.

[0003] The existing supporting device generally supports the arch bridge bottom mold through a steel structure. The height adjustment and the arc supporting function of the supporting structure are independent of each other, and lack a linkage mechanism. When the height is adjusted, the arc supporting structure needs to be manually adjusted, or after the arc is adjusted, the height needs to be recalibrated. The operation is complicated and time-consuming, and it is difficult to quickly adapt to the bottom mold reinforcing requirements of arch bridges of different sizes, thereby leading to low installation efficiency. The height and arc adjustment rely on manual operation and lack power-driven components. When the height or large-span of the bottom mold of a large arch bridge is adjusted, a large amount of manpower is needed to cooperate, and the labor intensity is large and there is a risk of falling from a high altitude. At the same time, the manual adjustment precision is difficult to guarantee, and the supporting structure is prone to uneven stress due to operation errors, thereby affecting the overall stability. Therefore, the above problems need to be improved. SUMMARY

[0004] The application overcomes the shortcomings of the prior art and provides a supporting device for reinforcing an arch bridge bottom mold. The application is implemented through the following technical scheme.

[0005] The supporting device for reinforcing the arch bridge bottom mold comprises a base. First demolding plates are symmetrically arranged at the upper ends of the base. Second demolding plates are arranged at the ends of the first demolding plates away from each other. The first demolding plates and the second demolding plates support the arch hole of the arch bridge. First splicing plates are clamped between the first demolding plates and the second demolding plates on the same side. Second splicing plates are clamped between the two first demolding plates. A lifting arc adjusting mechanism is arranged at the upper end of the base. The lifting arc adjusting mechanism comprises a lifting adjusting assembly and an arc adjusting assembly. The lifting arc adjusting mechanism is installed on the base. The height and the arc of the first demolding plates and the second demolding plates are adjusted through the lifting arc adjusting mechanism. After the height and the arc of the lifting arc adjusting mechanism are adjusted, the gaps between the first demolding plates and the second demolding plates and the gaps between the two first demolding plates are filled through the first splicing plates and the second splicing plates.

[0006] Further, the lifting adjusting assembly comprises first hydraulic rods installed at the front and rear ends of the top surface of the base, second hydraulic rods provided at the sides away from each other of the same ends of the first hydraulic rods, four second hydraulic rods respectively installed at the four corners of the base, a first support plate provided at the upper ends of the same ends of the two first hydraulic rods, a second support plate provided at the upper ends of the same ends of the two second hydraulic rods, and the output shafts of the same ends of the two first hydraulic rods respectively movably connected to the front and rear ends of the first support plate, and the output shafts of the same ends of the two second hydraulic rods respectively movably connected to the front and rear ends of the second support plate.

[0007] Further, the first installation slots are provided with first guide holes at the top surfaces, the second installation slots are provided with second guide holes at the top surfaces, the first installation slots are provided with first connecting plates, the first connecting plates are provided with first guide plates at the top surfaces, and the first guide plates are slid in the first guide holes; the second installation slots are provided with second connecting plates, the second connecting plates are provided with second guide plates at the top surfaces, and the second guide plates are slid in the second guide holes.

[0008] Further, the first connecting plates and the second support plates are connected by bolts, and the first connecting plates and the second connecting plates are rubber plates.

[0009] Further, the first installation slots are provided with first sliding grooves at the bottom surfaces, the second installation slots are provided with second sliding grooves at the bottom surfaces, the first connecting plates are provided with first sliding plates at the bottom surfaces, and the first sliding plates are slid in the first sliding grooves; the second connecting plates are provided with second sliding plates at the bottom surfaces, and the second sliding plates are slid in the second sliding grooves.

[0010] Further, the arc adjusting assembly comprises guide rails horizontally installed at the two sides of the middle part of the top surface of the base, a first moving block and a second moving block slidably connected in the guide rails, a first screw rod vertically rotatably connected at the upper end of the first moving block, a first lifting cylinder threadedly connected at the upper end of the first screw rod, the first lifting cylinder movably connected at one end of the bottom surface of the first sliding plate, a second screw rod vertically rotatably connected at the upper end of the second moving block, a second lifting cylinder threadedly connected at the upper end of the second screw rod, and the second lifting cylinder movably connected at one end of the bottom surface of the second sliding plate.

[0011] Further, the first screw rod lower end is provided with a first gear, the second screw rod lower end is provided with a second gear, the guide rail top surface front end is transversely provided with a rack, and the rack is respectively engaged with the first gear and the second gear for transmission; the base upper end middle part is transversely provided with a bidirectional screw rod, the bidirectional screw rod two ends are respectively arranged in the two guide rails to rotate, and the bidirectional screw rod two ends are respectively screw-connected with the two first moving blocks and the two second moving blocks; the bidirectional screw rod middle part is provided with a worm gear, the worm gear upper end is engaged with a worm for transmission, the worm front end is connected with a motor through a shaft coupling, and the motor is arranged on the base.

[0012] Further, cavities are formed in the first connecting plate and the second connecting plate, a plurality of supporting rollers are rotatably connected in each cavity, and two ends of adjacent two supporting rollers are connected with a hinge.

[0013] Further, the supporting device further comprises a demolding air bag, the demolding air bag is installed on the first demolding plate and the second demolding plate, the demolding air bag is connected with a first air pump through a first air pipe, the first air pump is installed on the base, a plurality of support air bags are equidistantly arranged on the base bottom surface front and rear ends, a solenoid valve is installed on the connecting port of the support air bag, the solenoid valve is connected with a second air pump through a second air pipe, and the second air pump is installed on the base; an XY axis level instrument is installed on the base top surface.

[0014] Further, the first lifting cylinder front and rear ends are rotatably connected with a third hydraulic rod, the second lifting cylinder front and rear ends are rotatably connected with a fourth hydraulic rod, the output shafts of the third hydraulic rod and the fourth hydraulic rod penetrate through the base, the base top surface two ends are respectively provided with straight grooves matched with the third hydraulic rod and the fourth hydraulic rod, the output shafts of the third hydraulic rod and the fourth hydraulic rod are rotatably connected with a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are both L-shaped, the first gear and the second gear are both provided with a plurality of equidistantly arranged limiting grooves, and the bottom of the first limiting rod and the bottom of the second limiting rod are respectively arranged in the corresponding limiting grooves; the first limiting rod and the second limiting rod are controlled through the third hydraulic rod and the fourth hydraulic rod, and the first gear and the second gear are limited.

[0015] The beneficial effects of the present application relative to the prior art are:

[0016] 1、The present application realizes accurate and flexible adjustment of height and arc through the lifting arc adjustment mechanism: in the lifting adjustment assembly, the combination of the first hydraulic rod and the second hydraulic rod can quickly and stably adjust the height of the supporting device according to the size of different arch bridges; at the same time, cooperating with the arc adjustment assembly, the guide rail, the moving block and the lifting cylinder and other components cooperate with each other, and the arc of the supporting surface can be accurately adjusted; compared with the traditional fixed structure supporting device, the flexible and accurate adjustment of the height and the arc greatly improves the applicability, and can meet the arch bridge bottom mold reinforcement demand of various complex shapes and sizes, and provides strong support for the diversification design and construction of arch bridges.

[0017] 2、The present application can accurately fill the gap between the first and second stripping plates and the gap between the first stripping plates after the height and arc adjustment is completed, 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 mold can be uniformly stressed during the pouring process, effectively improving the forming quality of the bottom mold; compared with the traditional support device which requires additional complex sealing or filling measures, the splicing structure of the present application is simple and efficient, reducing the construction difficulty and cost.

[0018] 3、The present application gives the support device the function of intelligent horizontal adjustment through the cooperative work of the support air bag, electromagnetic valve, second air pump and XY axis level; during the arch bridge bottom mold pouring process, when the device on both sides bears different weights, causing different degrees of depression, 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 support air bag is controlled through the electromagnetic valve, so that the height of the two ends of the device can be quickly adjusted to restore the level; this intelligent adjustment mechanism can effectively avoid the bottom mold pouring quality problems caused by the inclination of the device, such as uneven concrete thickness, cracks, etc., and also prevent the overall sinking of the device, ensuring the safety and stability of the construction process.

[0019] 4、The present application realizes rapid stripping of the bottom mold after forming through the cooperation of the stripping air bag and the first air pump; the third hydraulic rod and the fourth hydraulic rod form a three-dimensional fixed double locking mechanism with the first and second limit rods, improving the overall wind and earthquake resistance of the device and avoiding structural displacement of the device; the insertion depth of the third and fourth hydraulic rods into the soil can be adjusted according to the geological conditions, and the L-shaped limit rod can lock the first and second gears, preventing the gears from rotating, greatly improving the overall anti-overturning moment capacity of the device and effectively improving the anti-slippage ability of the device.

[0020] 5、The first and second connecting plates are internally provided with supporting rollers and hinge structures, which play an important role in adjusting the height and arc; when the connecting plate is bent, the supporting roller rotates through the hinge, which can effectively increase the supporting strength of the connecting plate and prevent deformation or damage of the connecting plate during the stress process; this structure design not only ensures the flexibility of the support device, but also greatly enhances its carrying capacity, ensuring that it can work stably and reliably during the arch bridge bottom mold reinforcement process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application;

[0022] Figure 2 is a schematic diagram of the lifting arc adjustment mechanism of the present application;

[0023] Figure 3 This is a schematic diagram of the connection structure between the first connecting plate and the first supporting plate of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the arc adjustment component of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection between the second support plate and the second connecting plate of the present invention;

[0026] 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;

[0027] Figure 7 This is a three-dimensional structural diagram of the first and second templates of the present invention;

[0028] Figure 8 This is a schematic cross-sectional view of the first and second templates of the present invention:

[0029] Figure 9 This is a schematic diagram of the structure of the support roller of the present invention:

[0030] Figure 10 For the present invention Figure 4 Enlarged schematic diagram of the structure at part A in the middle;

[0031] Figure 11 For the present invention Figure 5 Enlarged schematic diagram of the structure of part B in the middle;

[0032] Figure 12 For the present invention Figure 9 Enlarged schematic diagram of the structure at part C;

[0033] Figure 13 This is a schematic diagram of the structure of the fourth hydraulic rod and the second limiting rod of the present invention.

[0034] The 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 supporting plate; 9, second supporting plate; 10, first connecting plate; 11, first guide plate; 12, second connecting plate; 13, second guide plate; 14, first sliding groove; 15, first sliding plate; 16, second sliding groove; 17, second sliding plate; 18, first lifting cylinder; 19, first screw rod; 20, first gear; 21, second lifting 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, supporting roller; 33, hinge; 34, stripping air bag; 35, first air pump; 36, electromagnetic valve; 37, supporting air bag; 38, second air pump; 39, XY axis level; 40, third hydraulic rod; 41, fourth hydraulic rod; 42, first limiting rod; 43, second limiting rod. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application is further described in detail in conjunction with the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. The technical solutions of the present application are described in detail below in conjunction with the embodiments and drawings, but the protection scope is not limited thereto.

[0036] Reference Figures 1 to 13 The present embodiment proposes a support device for arch bridge bottom mold reinforcement, which comprises a base 1, two first stripping plates 2 are symmetrically arranged on the upper end of the base 1, and a second stripping plate 3 is arranged at the end away from each other of the two first stripping plates 2, and the first stripping plate 2 and the second stripping plate 3 are used to support the arch hole of the arch bridge when the arch bridge is built; the first splicing plate 4 is clamped between the first stripping plate 2 and the second stripping plate 3 on the same side, and the second splicing plate 5 is clamped between the two first stripping plates 2. The lifting camber adjusting mechanism is arranged on the upper end of the base 1, and the lifting camber adjusting mechanism is divided into lifting adjusting assembly and camber adjusting assembly; the lifting camber adjusting mechanism is installed on the base 1; after the height and camber of the lifting camber adjusting mechanism are adjusted, the gap between the first stripping plate 2 and the second stripping plate 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 respectively.

[0037] The first splicing plate 4 and the second splicing plate 5 solve the problem of discontinuous support surface of the traditional support device; the first splicing plate 4 and the second splicing plate 5 are made of aluminum-magnesium-manganese alloy plates, can be quickly and accurately connected with the first stripping plate 2 and the second stripping plate 3, and improve the overall structural strength; in the splicing process, the surface of the first splicing plate 4 and the second splicing plate 5 is further provided with a flexible sealing layer, the flexible sealing layer is made of ethylene-propylene-diene rubber and has a thickness of 3 mm, can fill a gap of 0.5-2 mm, prevents concrete slurry from leaking, guarantees the flatness of the bottom mold surface (error ≤2 mm), avoids subsequent chiseling treatment, improves the concrete forming quality, can effectively fill the small gap, forms a complete support surface without stress concentration points; in the construction of a large arch bridge, when the traditional support device is used, local deformation occurs after concrete pouring due to the gap between the support surfaces, and repair treatment is needed; after the splicing structure of the application is used, the concrete is once-formed after pouring, and the surface flatness reaches a very high standard, not only saves the later repair cost, but also improves the overall strength and service life of the bottom mold, and the construction efficiency is improved by more than 30%.

[0038] The lifting adjusting assembly comprises first hydraulic rods 6 installed at the top of the base 1 at both sides of the front and rear ends, second hydraulic rods 7 provided at the sides away from each other of the two first hydraulic rods 6 at the same end, four second hydraulic rods 7 respectively installed at the four corners of the base 1, a first support plate 8 provided at the upper ends of the two first hydraulic rods 6 at the same side, a second support plate 9 provided at the upper ends of the two second hydraulic rods 7 at the same side, and the output shafts of the two first hydraulic rods 6 at the same side are respectively movably connected with the front and rear ends of the first support plate 8, and the output shafts of the two second hydraulic rods 7 at the same side are respectively movably connected with the front and rear ends of the second support plate 9. The first hydraulic rods 6 and the second hydraulic rods 7 are connected through a precise hydraulic control system, and can realize millimeter-level height fine adjustment according to the actual needs of the arch bridge construction; when the bottom mold of a large arch bridge needs to be built, the first hydraulic rods 6 and the second hydraulic rods 7 can be synchronously and quickly elongated, and the support device can be lifted to the specified height in only a few minutes; in small arch bridge construction, the extension amount of each hydraulic rod can be controlled separately, and the lower construction height requirement can be accurately matched; the first support plates 8 are provided with first installation grooves at the side ends away from each other, the second support plates 9 are provided with second installation grooves at the side ends away from each other, a plurality of first guide holes are arranged at equal intervals in the top of the first installation grooves, and a plurality of second guide holes are arranged at equal intervals in the top of the second installation grooves; the first installation grooves are provided with first connecting plates 10, the top of each first connecting plate 10 is provided with a plurality of first guide plates 11 arranged at equal intervals, and the first guide plates 11 slide in the first guide holes; the second installation grooves are provided with second connecting plates 12, the top of each second connecting plate 12 is provided with a plurality of second guide plates 13 arranged at equal intervals, and the second guide plates 13 slide in the second guide holes. The first guide plates 11 facilitate the movement and guidance of the first connecting plates 10; and the second guide plates 13 facilitate the movement and guidance of the second connecting plates 12.

[0039] The first release plate 2 is connected with the first support plate 8 and the first connecting plate 10 at the same side through bolts, and the second release plate 3 is connected with the second support plate 9 and the second connecting plate 12 at the same side through bolts; the first support plate 8 and the first connecting plate 10 facilitate supporting the first release plate 2; and the second support plate 9 and the second connecting plate 12 facilitate supporting the second release plate 3. The first connecting plate 10 and the second support plate 9 at the same side are connected through bolts, and the first connecting plate 10 and the second connecting plate 12 are rubber plates.

[0040] The bottom of the first installation groove is provided with a first sliding groove 14, and the bottom of the second installation groove is provided with a second sliding groove 16. The first connecting plate 10 is provided with a first sliding plate 15 at the bottom, and the first sliding plate 15 slides in the first sliding groove 14; and the second connecting plate 12 is provided with a second sliding plate 17 at the bottom, and the second sliding plate 17 slides in the second sliding groove 16.

[0041] The arc adjusting assembly comprises guide rails 24 transversely mounted on both sides of the middle part of the top surface of the base 1, a first moving block 25 and a second moving block 26 slidably connected in the guide rails 24, a first screw rod 19 vertically rotatably connected to the upper end of the first moving block 25, a first lifting cylinder 18 threadedly connected to the upper end of the first screw rod 19, the upper end of the first lifting cylinder 18 movably hinged to one end of the bottom surface of the first sliding plate 15, a second screw rod 22 vertically rotatably connected to the upper end of the second moving block 26, a second lifting cylinder 21 threadedly connected to the upper end of the second screw rod 22, the upper end of the second lifting cylinder 21 movably hinged to one end of the bottom surface of the second sliding plate 17; the first moving block 25 and the second moving block 26 are facilitated to slide through the guide rails 24; the movement of the first screw rod 19 is facilitated to be controlled through the first moving block 25; the movement of the second screw rod 22 is facilitated to be controlled through the second moving block 26; the lifting of the first lifting cylinder 18 is facilitated to be controlled through the first screw rod 19; the lifting of the second lifting cylinder 21 is facilitated to be controlled through the second screw rod 22; the arc adjustment of the first connecting plate 10 is facilitated to be controlled through the first lifting cylinder 18; the arc adjustment of the second connecting plate 12 is facilitated to be controlled through the second lifting cylinder 21.

[0042] A first gear 20 is mounted on the lower end of the first screw rod 19, a second gear 23 is mounted on the lower end of the second screw rod 22, a rack 27 is transversely mounted on the top surface of the guide rail 24, and the rack 27 is in meshing transmission with the first gear 20 and the second gear 23; the rotation of the first screw rod 19 is facilitated to be controlled through the first gear 20; the rotation of the second screw rod 22 is facilitated to be controlled through the second gear 23; the rotation of the first gear 20 and the second gear 23 is facilitated to be controlled through the rack 27; a bidirectional screw rod 28 is transversely arranged on the middle part of the upper end of the base 1, both ends of the bidirectional screw rod 28 are rotatably arranged in the two guide rails 24, and both ends of the bidirectional screw rod 28 are threadedly connected with the two first moving blocks 25 and the two second moving blocks 26; a worm wheel 29 is mounted on the middle part of the bidirectional screw rod 28, a worm 30 is in meshing transmission with the upper end of the worm wheel 29, the front end of the worm 30 is connected with a motor 31 through a shaft coupling, and the motor 31 is mounted on the base 1; the movement of the first moving block 25 and the second moving block 26 is facilitated to be controlled through the bidirectional screw rod 28; the rotation of the bidirectional screw rod 28 is facilitated to be controlled through the worm wheel 29; the rotation of the worm wheel 29 is facilitated to be controlled through the worm 30, and self-locking is realized; the rotation of the worm 30 is facilitated to be controlled through the motor 31.

[0043] In the arc adjustment, the sliding fit of the guide rail 24 and the first moving block 25 and the second moving block 26, the screw transmission of the first lead screw 19 and the second lead screw 22 form a precise arc adjustment system; the operator can drive the worm 30 and the worm wheel 29 through the control motor 31, and then drive the bidirectional lead 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 arc of the support surface through the first lifting cylinder 18 and the second lifting cylinder 21; taking the existing special-shaped arch bridge construction as an example, the traditional support device needs to spend several days to adjust the approximate arc through multiple attempts; and the device reduces the error through the precise adjustment of the lifting adjustment assembly and the arc adjustment assembly, improves the construction efficiency and precision, and provides strong technical support for the design of the complex arch bridge.

[0044] The first connecting plate 10 and the second connecting plate 12 are internally provided with cavities, and a plurality of supporting rollers 32 are rotatably connected in each cavity, and the two ends of adjacent two supporting rollers 32 are connected with a hinge 33; the structure of the supporting rollers 32 and the hinge 33 in the first connecting plate 10 and the second connecting plate 12 is the key to improve the strength of the support device; the supporting rollers 32 are made of high-strength alloy steel material and are subjected to special surface treatment process, so that the surface hardness reaches more than HRC60, and can withstand huge pressure; when the first connecting plate 10 or the second connecting plate 12 is bent, the hinge 33 enables it to realize multi-angle flexible rotation while maintaining stable connection strength; in actual application, this structure design makes the deformation amount of the first connecting plate 10 and the second connecting plate 12 still less than 1mm when the support device bears a load of up to 500kN, which is much lower than the deformation amount of the traditional support device; in the construction of a certain heavy-load traffic arch bridge, the support device of the application successfully supports the bottom mold with a weight of 300 tons and the concrete pouring weight, while the traditional support device appears structural deformation and even local damage under the same conditions, which fully proves the excellent performance of the application in enhancing the support strength, and provides reliable technical support for the construction of large and heavy-load arch bridges.

[0045] The supporting device further comprises a demolding air bag 34 installed on the first demolding plate 2 and the second demolding plate 3, and the demolding air bag 34 is connected with a 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 air bags 37 are installed on the front and rear ends of the bottom surface of the base 1, the connecting ports of the supporting air bags 37 are installed with electromagnetic valves 36, the electromagnetic valves 36 are connected with a second air pump 38 through a second air pipe, the second air pump 38 is installed on the base 1, an XY axis level meter 39 is installed on the top surface of the base 1, the combination design of the demolding air bag 34 and the first air pump 35 completely changes the traditional demolding mode, the demolding air bag 34 adopts a high-elasticity and high-strength composite material, and the thickness of the demolding air bag 34 is only 5 mm in the un-inflated state, so that the demolding air bag 34 can be closely attached between the supporting device and the bottom mold without affecting the pouring quality of the bottom mold, when the bottom mold is formed, the demolding air bag 34 is inflated by the first air pump 35, the demolding air bag 34 will rapidly expand to generate a uniform pushing force, so that the bottom mold is separated from the supporting device, this demolding mode not only has a high speed, and the demolding process only needs 1-2 minutes, but also has a uniform force on the bottom mold, so that local stress concentration is avoided, and problems such as cracks and damage of the bottom mold in the demolding process are effectively avoided, in repeated use tests, the service life of the bottom mold adopting the demolding technology is prolonged by more than 50%, labor cost required by manual demolding is reduced, and about 200,000 yuan of demolding cost of a single project can be saved, the device height is adjusted through the supporting air bags 37, so that the device always maintains a fixed height, through cooperation of the supporting air bags 37 and the electromagnetic valves 36, it is convenient to ensure that the device is at the same horizontal height, the intelligent horizontal adjustment system is formed by cooperation of the supporting air bags 37, the electromagnetic valves 36, the second air pump 38 and the XY axis level meter 39, and dynamic balance of the supporting device in the construction process is realized, the XY axis level meter 39 adopts high-precision laser sensing technology, can monitor the inclination angle of the supporting device in the X axis and Y axis directions in real time, and the monitoring frequency is as high as 100 times per second, once the inclination angle exceeds a preset threshold value (such as 0.3°), the system will immediately control the second air pump 38 to inflate or deflate the corresponding supporting air bag 37 through the electromagnetic valve 36, the supporting air bag 37 is an existing structure, the supporting air bag 37 adopts an existing high-strength elastic material and a layered structure design, and in the inflation process, the supporting air bag 37 can automatically adjust the deformation degree according to the stress condition to ensure that the device stably rises or falls, taking the construction of a certain river-crossing arch bridge as an example, in the concrete pouring process, the device on one side is inclined due to water impact, the traditional supporting device may need manual intervention for adjustment, which takes a long time and has safety hazards, the device automatically completes correction of the inclination angle within 2 seconds, ensures the continuity and safety of the construction, effectively avoids concrete pouring defects caused by inclination, and improves the engineering quality, the electromagnetic valves 36 and the second air pump 38 are convenient for controlling the single supporting air bag 37 to support the device, so that the device always maintains a horizontal state, and the XY axis level meter 39 is convenient for monitoring whether the device is in a horizontal state.

[0046] The third hydraulic rod 40 is rotatably connected to the front and rear ends of the first lifting cylinder 18, the fourth hydraulic rod 41 is rotatably connected to the front and rear ends of the second lifting cylinder 21, the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 penetrate through the base 1, the top surface of the base 1 is provided with straight grooves matched with the third hydraulic rod 40 and the fourth hydraulic rod 41 at both ends, respectively, 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, the first limiting rod 42 and the second limiting rod 43 are both L-shaped, the first gear 20 and the second gear 23 are both provided with a plurality of equidistantly arranged limiting grooves, and the other ends of the first limiting rod 42 and the second limiting rod 43 are arranged in the limiting grooves; the first limiting rod 42 and the second limiting rod 43 are controlled through the third hydraulic rod 40 and the fourth hydraulic rod 41, and then the first gear 20 and the second gear 23 are limited.

[0047] The application further provides a use method of the support device for arch bridge bottom mold reinforcement.

[0048] Step one, first, power on the equipment and make initial preparations, connect the motor 31 to the wires and power it on, complete the power access of the equipment; At this time, the device is in a standby adjustment state, ready for subsequent height and arc adjustment; Activate the motor 31 through the power system to provide power source for the entire mechanical transmission structure, ensuring that the subsequent power components have operating conditions; The setting of the standby adjustment state makes the device in a controllable initial working condition, facilitating construction personnel to accurately start each functional module according to the on-site demand, and avoiding safety hazards caused by unintended actions.

[0049] Step two, then, carry out preliminary height adjustment, start the first hydraulic rod 6 and the second hydraulic rod 7, which are respectively installed on the top surface of the base 1 at the front and rear ends and the four corners; Since the output shafts of the two first hydraulic rods 6 on the same side are respectively movably connected 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 connected 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 through the extension and contraction 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 the height requirements of different arch bridge constructions; Since the hydraulic drive system (the first hydraulic rod 6 and the second hydraulic rod 7) has the characteristics of large thrust and convenient speed regulation, three-dimensional adjustment (independent lifting of the front and rear ends) of the support height can be realized through the coordinated extension and contraction of the four groups of hydraulic rods (two groups at the front and rear ends), satisfying the support requirements of arch bridge bottom molds of different spans and different rise heights; The movable hinged structure (the first hydraulic rod 6 and the first support plate 8, and the second hydraulic rod 7 and the second support plate 9) allows the support plates to swing slightly during lifting, avoiding stress concentration caused by rigid connection, while ensuring the hinged matching precision of the support plates and the subsequent connecting plates.

[0050] Step three, when the first support plate 8 and the second support plate 9 are lifted, the motor 31 is started; the motor 31 is connected with the worm 30 through the shaft coupling, drives the worm 30 to rotate; the worm 30 is engaged with the worm gear 29 to drive, and then makes the worm gear 29 rotate, and the worm gear 29 is installed in the middle of the bidirectional screw rod 28, so the bidirectional screw rod 28 starts to rotate; because the two ends of the bidirectional screw rod 28 are respectively screwed with 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, therefore the rotation of the bidirectional screw rod 28 controls the movement of the first moving block 25 and the second moving block 26 in the guide rail 24, and then drives the first screw rod 19 installed on the upper end of the first moving block 25 and the second screw rod 22 on the upper end of the second moving block 26 to move respectively; because the worm 30 and the worm gear 29 have self-locking function and large transmission ratio characteristics, the high-speed rotation of the motor 31 can be converted into low-speed high-precision linear motion of the first screw rod 19 and the second screw rod 22, and the positioning accuracy error of the first moving block 25 and the second moving block 26 is ensured to be less than or equal to 0.5mm; the bidirectional screw rod 28 makes the first moving block 25 and the second moving block 26 move synchronously and reversely, cooperates with the linear guiding action of the guide rail 24, realizes the horizontal distance adjustment of the first screw rod 19 and the second screw rod 22, provides the basic displacement for the subsequent radian adjustment, and the synchronization error of the transmission structure is less than 1%, which guarantees the consistency of the adjustment of the two sides of the support surface.

[0051] Step four, then in the moving process of the first screw rod 19 and the second screw rod 22, because the first gear 20 and the second gear 23 installed at the lower end are in meshing transmission with the rack 27 transversely installed at the top front end of the guide rail 24, 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; because the first lifting cylinder 18 is threadedly connected to the upper end of the first screw rod 19, the second lifting cylinder 21 is threadedly connected to the upper end of the second screw rod 22, the upper end of the first lifting cylinder 18 is movably hinged to one end of the bottom surface of the first sliding plate 15, and the upper end of the second lifting cylinder 21 is movably hinged to one end of the bottom surface of the second sliding plate 17, the rotation of the first screw rod 19 and the second screw rod 22 makes the first lifting cylinder 18 and the second lifting cylinder 21 lift during the moving process, thereby realizing the adjustment of the arc of the support surface in cooperation with the lifting of the first support plate 8 and the second support plate 9; the horizontal displacement of the first moving block 25 and the second moving block 26 is converted into the rotary motion of the first screw rod 19 and the second screw rod 22 through the cooperation of the first gear 20, the second gear 23 and the rack 27, and the rotary motion is converted into the vertical lifting motion 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, forming the motion conversion mode of “horizontal displacement→rotation→vertical lifting”, which can accurately control the height difference of each hinged point of the support surface (the accuracy reaches 0.1mm), thereby fitting the circular arc curve with a radius of 5-50 meters, meeting the construction requirements of different arch bridges curvature; the sliding plate structure (the first sliding plate 15 and the second sliding plate 17) movably hinged allows the support surface to form a continuous curved surface during the adjustment process, avoiding the angular defect caused by rigid connection.

[0052] Step five, then the position locking and support strength enhancement operation, when the height and arc adjustment is good, 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 wheel 29 and the worm 30, the positions of the first lead screw 19 and the second lead screw 22 can be locked, thereby fixing the heights of the first lifting cylinder 18 and the second lifting cylinder 21, and further controlling the heights and arcs 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 heights and arcs through the first lifting cylinder 18 and the second lifting cylinder 21 respectively, the supporting rollers 32 inside them rotate through the hinges 33; this structural design increases the support strength of the first connecting plate 10 and the second connecting plate 12, so that the device can withstand greater load; the self-locking function (automatic locking when the transmission efficiency is ≤30%) of the worm wheel 29 and the worm 30 forms a mechanical hard lock, preventing displacement of the lead screws (the first lead screw 19 and the second lead screw 22) caused by construction vibration; after locking, the structural rigidity is improved by more than 60%; the supporting rollers 32 are connected by hinges 33 evenly distributed at 60°, which can convert concentrated load into uniformly distributed load; according to mechanical testing, this structure improves the bending strength of the connecting plates (the first connecting plate 10 and the second connecting plate 12) by 40% and the shear strength by 35%, and can withstand a construction load of 20-50 tons / square meter, meeting the bearing capacity requirement when pouring C50 concrete.

[0053] Step six, then the first release plate 2 is bolted on the first support plate 8 and the first connecting plate 10, and the second release plate 3 is bolted on 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, i.e. the gaps between the first release plate 2 and the second release plate 3 on the same side and between the two first release plates 2; the flexible sealing layer on the surface of the first splicing plate 4 and the second splicing plate 5 effectively fills the small gaps, forming a complete support surface; the first release plate 2 is bolted with the first support plate 8 and the first connecting plate 10, and the second release plate 3 is bolted with the second support plate 9 and the second connecting plate 12, to provide reliable mechanical fixation (pullout resistance ≥50kN) and ensure that the formwork does not displace during concrete vibration; the flexible sealing layer (using EPDM rubber, thickness 3mm) used by the first splicing plate 4 and the second splicing plate 5 can fill gaps of 0.5-2mm, prevent concrete slurry leakage, ensure the flatness of the bottom mold surface (error ≤2mm), avoid subsequent chiseling treatment, and improve the quality of concrete molding.

[0054] Step seven, then the air bag system work and horizontal adjustment, first, the demolding air bag 34 is installed on the first demolding plate 2 and the second demolding plate 3, through the first air pump 35 to the demolding air bag 34 inflation, for the subsequent demolding preparation; During the bottom mold pouring process, when the device is tilted due to the weight difference on both sides, the XY axis level meter 39 monitors the level of the device in real time; Once the inclination angle exceeds the preset threshold (±0.5°), the system immediately controls the second air pump 38 to inflate or deflate the corresponding supporting air bag 37 through the electromagnetic valve 36, and adjusts the inflation degree of the supporting air bag 37 to control the device to be at a horizontal height, ensuring the dynamic balance of the device during construction; By pre-inflating the demolding air bag 34 (pressure 0.3-0.5MPa), rapid demolding can be achieved after the initial setting of the concrete, reducing the adhesion between the formwork (first demolding plate 2, second demolding plate 3) and the concrete (demolding resistance reduced by 70%), and avoiding the edge damage caused by traditional mechanical demolding; The response time of the intelligent horizontal adjustment system formed by the XY axis level meter 39, the electromagnetic valve 36, the second air pump 38 and the supporting air bag 37 is ≤2 seconds, and through the dynamic compensation of the supporting air bag 37, the inclination angle of the device can be controlled within ±0.2°, effectively preventing the deformation of the bottom mold caused by uneven settlement, and ensuring the symmetry and uniformity of the stress of the arch bridge structure.

[0055] Step eight, finally, the locking operation is performed, since the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 both penetrate the base 1, and the output shafts of the third hydraulic rod 40 and the fourth hydraulic rod 41 are both rotatably connected with the first limiting rod 42 and the second limiting rod 43 (both are L-shaped), thereby limiting the first gear 20 and the second gear 23, and locking the first lead screw 19 and the second lead screw 22; 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.

[0056] Step nine, all equipment is powered off, completing the entire support device work preparation process; Through the third hydraulic rod 40, the fourth hydraulic rod 41, the first limiting rod 42 and the second limiting rod 43, a three-dimensional fixed double locking mechanism is formed, which can avoid the damage of the first lifting cylinder 18 and the second lifting cylinder 21 due to overload after adjustment, improve the overall wind and earthquake resistance effect of the device, and avoid structural displacement (horizontal displacement ≤1mm) of the device; The insertion depth of the third hydraulic rod 40 and the fourth hydraulic rod 41 into the soil can be adjusted according to the geological conditions (0.5-1.5 meters), and the first limiting rod 42 and the second limiting rod 43 can be used 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 improved by 80%, and the anti-slippage ability is improved by 60%; The power-off treatment conforms to the safety specifications of the construction site, avoids the risk of accidental touch in standby state, and ensures the safety of construction personnel.

[0057] It is to be noted that, as used in this document, the term "indicia" is intended to cover any and all indicia, whether visible or not, and whether or not capable of being seen by the human eye. It is to be further noted that, as used in this document, the terms "coupled" and "connected", along with derivatives thereof, can be used to describe different types of relationship, link, or association between two entities or operations. For example, it can be used to describe a relationship between two devices that are physically contacted with each other, or it can be used to describe two devices or operations that exchange information with each other without physical contact. It is also to be noted that, as used in this document, the terms "comprise", "comprises" or "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0058] The above description is further to specific preferred embodiments of the present application and should not be taken as limiting the present application to only these embodiments. Without departing from the scope of the present application, one of ordinary skill in the art can make a number of simple deductions or substitutions, which should be considered to fall within the scope of the present application as defined by the claims.

Claims

1. A support device for the reinforcement of an arch bridge formwork, characterized in that, The utility model provides a kind of arch bridge moulding device, including pedestal (1), the upper end of pedestal (1) is equipped with the first stripping plate (2) symmetrically on both sides, the end of mutual faraway of two first stripping plates (2) is equipped with second stripping plate (3), and the arch hole of arch bridge is supported by first stripping plate (2) and second stripping plate (3);First splicing plate (4) is clamped between the first stripping plate (2) and the second stripping plate (3) of same side, and second splicing plate (5) is clamped between two first stripping plates (2);Lifting camber adjusting mechanism is equipped on the upper end of pedestal (1), lifting camber adjusting mechanism is divided into lifting adjusting assembly and camber adjusting assembly;Lifting camber adjusting mechanism is installed on pedestal (1), and the height and camber of first stripping plate (2) and second stripping plate (3) are adjusted by lifting camber adjusting mechanism;After the height and camber of lifting camber adjusting mechanism are adjusted, the gap between first stripping plate (2) and second stripping plate (3) and the gap between two first stripping plates (2) are filled by first splicing plate (4) and second splicing plate (5) respectively; Lifting adjusting assembly includes first hydraulic rod (6) installed on the top surface of pedestal (1) front and rear ends two sides, the side of mutual faraway of two first hydraulic rods (6) same end is equipped with second hydraulic rod (7), four second hydraulic rods (7) are respectively installed on the four corners of pedestal (1), the upper end of two first hydraulic rods (6) same side is equipped with same first support plate (8), the upper end of two second hydraulic rods (7) same side is equipped with same second support plate (9), and the output shaft of two first hydraulic rods (6) same side is respectively with the front and rear ends of first support plate (8) swing joint, the output shaft of two second hydraulic rods (7) same side is respectively with the front and rear ends of second support plate (9) swing joint; The side end surface of two first support plates (8) mutually faraway is equipped with first installation slot, the side end surface of two second support plates (9) mutually faraway is equipped with second installation slot, the top surface in first installation slot is equipped with multiple equidistantly arranged first guide ports, and the top surface in second installation slot is equipped with multiple equidistantly arranged second guide ports;First connecting plate (10) is equipped in first installation slot, and multiple equidistantly arranged first guide plates (11) are installed on the top surface of first connecting plate (10), and first guide plate (11) is placed in first guide port and slides;Second connecting plate (12) is equipped in second installation slot, and multiple equidistantly arranged second guide plates (13) are installed on the top surface of second connecting plate (12), and second guide plate (13) is placed in second guide port and slides; First stripping plate (2) is connected with first support plate (8) and first connecting plate (10) same side by bolt, and second stripping plate (3) is connected with second support plate (9) and second connecting plate (12) same side by bolt;First connecting plate (10) and second support plate (9) same side are connected by bolt, and first connecting plate (10) and second connecting plate (12) are rubber plate; The inner bottom surface of the first mounting groove is provided with a first sliding groove (14), and the inner bottom surface of the second mounting groove is provided with a second sliding groove (16); the bottom surface of the first connecting plate (10) is provided with a first sliding plate (15), and the first sliding plate (15) is arranged to slide in the first sliding groove (14); the bottom surface of the second connecting plate (12) is provided with a second sliding plate (17), and the second sliding plate (17) is arranged to slide in the second sliding groove (16). The arc adjusting assembly comprises guide rails (24) transversely mounted on both sides of the middle part of the top surface of the base (1), a first moving block (25) and a second moving block (26) slidably connected in the guide rails (24), a first screw rod (19) vertically rotatably connected to the upper end of the first moving block (25), a first lifting cylinder (18) threadedly connected to the upper end of the first screw rod (19), the upper end of the first lifting cylinder (18) movably hinged to one end of the bottom surface of the first sliding plate (15), a second screw rod (22) vertically rotatably connected to the upper end of the second moving block (26), a second lifting cylinder (21) threadedly connected to the upper end of the second screw rod (22), and the upper end of the second lifting cylinder (21) movably hinged to one end of the bottom surface of the second sliding plate (17). The lower end of the first screw rod (19) is provided with a first gear (20), the lower end of the second screw rod (22) is provided with a second gear (23), the top surface of the guide rail (24) is transversely provided with a rack (27), the rack (27) is in meshing transmission with the first gear (20) and the second gear (23) respectively, the middle part of the upper end of the base (1) is transversely provided with a bidirectional screw rod (28), the two ends of the bidirectional screw rod (28) are rotatably arranged in the two guide rails (24), and the two ends of the bidirectional screw rod (28) are threadedly connected with the two first moving blocks (25) and the two second moving blocks (26) respectively, and the middle part of the bidirectional screw rod (28) is provided with a worm wheel (29), the upper end of the worm wheel (29) is in meshing transmission with a worm (30), the front end of the worm (30) is connected with a motor (31) through a shaft coupling, and the motor (31) is mounted on the base (1).

2. The support device for reinforcing the formwork of an arch bridge according to claim 1, characterized in that, A cavity is formed in each of the first connecting plate (10) and the second connecting plate (12), a plurality of supporting rollers (32) are rotatably connected in each cavity, and the two ends of adjacent two supporting rollers (32) are connected with a hinge (33).

3. The support device for reinforcing the formwork of an arch bridge according to claim 1, characterized in that, The supporting device further comprises a demolding air bag (34) mounted on the first demolding plate (2) and the second demolding plate (3), and the demolding air bag (34) is connected with a first air pump (35) through a first air pipe, the first air pump (35) is mounted on the base (1), a plurality of support air bags (37) are equidistantly arranged on the bottom surface of the base (1), a solenoid valve (36) is mounted on the connecting port of the support air bag (37), the solenoid valve (36) is connected with a second air pump (38) through a second air pipe, the second air pump (38) is mounted on the base (1), and an XY-axis level (39) is mounted on the top surface of the base (1).

4. The support device for reinforcing the formwork of an arch bridge according to claim 1, characterized in that, The third hydraulic rod (40) is rotatably connected to the front and rear ends of the first lifting cylinder (18), the fourth hydraulic rod (41) is rotatably connected to the front and rear ends of the second lifting cylinder (21), the output shafts of the third hydraulic rod (40) and the fourth hydraulic rod (41) penetrate through the base (1), straight grooves matched with the third hydraulic rod (40) and the fourth hydraulic rod (41) are respectively formed in the top surfaces of the two ends of the base (1), first limiting rods (42) and second limiting rods (43) are rotatably connected to the output shafts of the third hydraulic rod (40) and the fourth hydraulic rod (41), the first limiting rods (42) and the second limiting rods (43) are L-shaped, the first gear (20) and the second gear (23) are both provided with a plurality of equidistantly arranged limiting grooves, and the bottoms of the first limiting rods (42) and the second limiting rods (43) are respectively arranged in the corresponding limiting grooves; the first limiting rods (42) and the second limiting rods (43) are controlled through the third hydraulic rod (40) and the fourth hydraulic rod (41), and the first gear (20) and the second gear (23) are limited.

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