Large-span and large-tonnage water conservancy aqueduct making machine

Abstract

The application discloses a novel water conservancy aqueduct slot forming machine with large span and large tonnage, which comprises two-span half-length main frames, the main frame comprises a bearing main beam located in the middle part, and front guide beams and rear guide beams are arranged at the two ends of the bearing main beam respectively; supporting legs for supporting the main frame on piers; a hoisting device capable of reciprocating along the main frame; a hanging outer rib system arranged on the bearing main beam, which is connected with an outer mold system; an inner mold system capable of entering and exiting the outer mold system; and a conveying vehicle capable of moving on the top surface of a pouring groove body; the application has the beneficial effects that: the main frame beam adopts a single main beam form, which greatly reduces a series of costs such as manufacturing, transportation, installation and disassembly, and the rotation function of the front auxiliary supporting leg and the transverse movement function of the main supporting leg and the rear auxiliary supporting leg are more conducive to adapting to curve construction.

Description

Technical Field Technical Field

[0002] This invention relates to the field of hydraulic aqueduct construction equipment, and in particular to a large-span, large-tonnage hydraulic aqueduct construction machine. Background Technology

[0003] Aqueducts are characterized by large cross-sectional dimensions, large flow rates, large tonnage, and long spans. In addition, the terrain and geological conditions where aqueduct projects are located are complex. Therefore, the development of new mechanized construction technologies and supporting equipment for large aqueducts and the solution of construction problems for large aqueducts in water diversion projects have become the key to water conservancy and water diversion construction. However, the current aqueduct equipment in China still has many construction drawbacks.

[0004] For example, the invention patent applied for by the applicant in February 2023 (application number CN202310174195.0) discloses a two-span counterweight-free trenching machine and a method for cast-in-place construction of hydraulic aqueducts span by span. However, the solution still has the following shortcomings in the implementation process: First, the legs lack rotation function and cannot adapt to curved construction; second, the legs are supported on the top of the trench body in the form of wheel rails, which puts a moving load on the trench body when passing through holes; third, the inner mold is positioned laterally by inner and outer sleeve pins, which easily leads to the inner and outer sleeve pins not being able to be properly inserted, and it is difficult to adjust on the construction site. Summary of the Invention

[0005] The purpose of this invention is to propose a large-span, high-tonnage hydraulic aqueduct construction machine that is applicable to complex terrain and geological conditions, and solves the construction problems of aqueducts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A large-span, high-tonnage hydraulic aqueduct construction machine includes:

[0008] The main frame consists of two and a half spans, including a load-bearing main beam in the middle, with a front guide beam and a rear guide beam at each end of the load-bearing main beam;

[0009] The outriggers support the main frame on the bridge piers;

[0010] A hoisting device that can reciprocate along the main frame;

[0011] The external rib system is installed on the main beam and is connected to the external formwork system.

[0012] An inner mold system that can be accessed from and exited from the outer mold system;

[0013] A transport vehicle that can move on the top surface of the casting tank.

[0014] Preferably, the bottom of the main frame is provided with a jacking rail for the outriggers to push, and the sides of the main frame are provided with hoisting device rails.

[0015] The main beam is symmetrically provided with cantilever beams on both sides, and the front guide beam and the rear guide beam are provided with support beams on both sides. The hoisting device track is located at the bottom of the cantilever beams and the support beams.

[0016] Preferably, the support leg includes a front auxiliary support leg supporting the front guide beam, a main support leg supporting the load-bearing main beam, and a rear auxiliary support leg supporting the rear guide beam;

[0017] The front auxiliary support leg includes a support beam. The top of the support beam is equipped with a hanging device that connects to the front guide beam. The support beam is connected to the upper beam via a pivot. The bottom of the upper beam is equipped with a hinge assembly. The bottom of the hinge assembly is equipped with a fixed column. The bottom of the fixed column is equipped with a front support cylinder. The bottom of the front support cylinder is equipped with a front anchoring longitudinal beam that can be connected to the pier.

[0018] Preferably, the main support leg includes a main crossbeam, a main support bracket is provided on the main crossbeam, a main slide is provided on the main support bracket, a hook device is provided on the main slide to be attached to the bottom of the main frame, and a main transverse hydraulic cylinder is provided between the main crossbeam and the main support bracket.

[0019] The bottom of the main crossbeam is provided with a main support leg column, and the bottom of the main support leg column is supported on the pier by a main support cylinder.

[0020] The main slide block sidewall is provided with a longitudinal sliding shoe that is pinned to the jacking rail, and a main longitudinal sliding cylinder is provided between the longitudinal sliding shoe and the main support bracket.

[0021] Preferably, the rear auxiliary outrigger includes a rear crossbeam, a rear support bracket is provided on the rear crossbeam, a rear slide block is provided on the rear support bracket, and a rear transverse hydraulic cylinder is provided between the rear crossbeam and the rear support bracket.

[0022] The bottom of the rear crossbeam is provided with a detachable rear distribution beam, and the bottom of the rear distribution beam is provided with a rear support cylinder.

[0023] The bottom of the rear crossbeam is provided with a detachable rear column, the bottom of the rear column is provided with a rear support cylinder, and the bottom of the rear support cylinder is provided with a rear anchoring longitudinal beam that can be connected to the pier.

[0024] Preferably, the hanging outer rib system can be opened from the middle. The hanging outer rib system includes an outer rib connected to the cantilever beam, a tie rod is provided inside the outer rib, and an outer rib tilting cylinder is provided between the outer rib and the cantilever beam.

[0025] Preferably, the outer mold system is located inside the hanging outer rib system. The outer mold system includes a bottom mold set on the bottom surface of the outer rib and a belly mold connected to the inner wall of the outer rib through an adjustable support system. The bottom of the belly mold is connected to the bottom mold.

[0026] Preferably, the two ends of the suspended outer rib system are provided with pier top support systems, and the bottom of the pier top support system is supported on the pier.

[0027] Preferably, the internal mold system includes an internal beam system, an internal template system, and a strut assembly;

[0028] The inner beam system includes an inner main beam, an inner beam support leg outer column at the bottom of the inner main beam, an inner beam support leg inner column inside the inner beam support leg outer column, a travel wheel box at the bottom of the inner beam support leg inner column, a column lifting cylinder between the inner main beam and the inner beam support leg inner column, and the strut assembly located between the inner main beam and the main frame.

[0029] The inner template system includes an inner template, an inner template support outer sleeve is provided inside the inner template, the inner template support outer sleeve is connected to the inner template support inner sleeve through an inner template transverse movement cylinder and an adjustable support rod, the inner template support inner sleeve is set on the inner main beam, and an inner template tilting cylinder is also provided inside the inner template.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. The main frame beam adopts a single main beam form, which greatly reduces a series of costs such as manufacturing, transportation, installation and dismantling. At the same time, with the rotation function of the front auxiliary support leg and the lateral movement function of the main support leg and the rear auxiliary support leg, it is more conducive to adapting to curved construction.

[0032] 2. The main frame is two and a half spans long to prevent the equipment from tilting forward or backward during the passage through the holes.

[0033] 3. The rear auxiliary outriggers have multiple support modes, allowing for selection of different support modes under different working conditions, which greatly facilitates on-site construction.

[0034] 4. The web plate of the outer mold system can move laterally on the panel of the bottom mold. By adjusting the lateral position of the web plate on the bottom mold, the bottom mold can adapt to different groove bottom widths, making it easier for the equipment to adapt to different groove shapes, improving the utilization rate of the template and reducing construction costs.

[0035] 5. All actions in the internal formwork system are achieved using hydraulic cylinders, which facilitates on-site construction. At the same time, the positioning of the internal formwork adopts the form of adjustable struts, which can be infinitely adjusted. This solves the problem that even if the internal formwork slightly deviates during the relocation process, it can still be in the designed position, which maximizes the convenience of on-site construction and ensures the quality of the tank.

[0036] 6. The hoisting device has multiple combination control modes, which facilitates on-site construction.

[0037] 7. The transport vehicle is an independent unit equipped with the equipment, with its own generator set. It can operate independently to transport steel bars on the top surface of the poured trough. In conjunction with the equipment's electric hoist assembly, it solves the problem of steel bar loading into the trough during high-pier construction, reducing on-site construction costs. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is the front view of the main frame of the present invention;

[0040] Figure 3 This is a top view of the main frame of the present invention;

[0041] Figure 4 Front view of the electric hoist track mounted on the main frame;

[0042] Figure 5 for Figure 4 AA section view;

[0043] Figure 6 for Figure 4 BB section view;

[0044] Figure 7 for Figure 4 CC section view;

[0045] Figure 8 Front view of the front auxiliary outrigger;

[0046] Figure 9 Right view of the front auxiliary outrigger;

[0047] Figure 10 Front view of the main support leg;

[0048] Figure 11 Right view of the main support leg;

[0049] Figure 12 The front view shows the rear auxiliary outrigger in its supporting position at the top of the tank.

[0050] Figure 13 The right view shows the rear auxiliary outrigger in its supported position at the top of the tank.

[0051] Figure 14 This is a front view of the rear auxiliary outrigger in its roadbed support state;

[0052] Figure 15 The right view shows the rear auxiliary outrigger in the roadbed support state;

[0053] Figure 16 This is a front view of the rear auxiliary outrigger in its supported position on the pier top.

[0054] Figure 17 The right view shows the rear auxiliary outrigger in its supported position on the pier top.

[0055] Figure 18 Front view of the external rib suspension system and the pier top support system;

[0056] Figure 19 This is a schematic diagram of the external rib suspension system and the external formwork system in the pouring state;

[0057] Figure 20 This is a schematic diagram of the hanging external rib system and the external mold system in the mold-opening state;

[0058] Figure 21 A schematic diagram of the pier top support system and the external formwork system;

[0059] Figure 22 This is a schematic diagram of the internal mold system;

[0060] Figure 23 This is a schematic diagram of the inner beam system in the state of being supported by the inner sleeve column of the outrigger;

[0061] Figure 24 This is a schematic diagram of the inner beam system in the contracted state of the inner sleeve column of the support leg;

[0062] Figure 25 This is a schematic diagram of the inner mold in its unfolded state;

[0063] Figure 26 This is a schematic diagram of the inner mold in a contracted state.

[0064] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0065] The invention will now be further described with reference to the accompanying drawings.

[0066] like Figure 1 As shown, an embodiment of the present invention provides a large-span, large-tonnage hydraulic aqueduct construction machine, comprising:

[0067] The main frame 1, spanning two and a half spans, includes a load-bearing main beam 11 located in the middle. A front guide beam 12 and a rear guide beam 13 are respectively installed at both ends of the load-bearing main beam 11. The load-bearing main beam 11 adopts a double-layer solid-web box-shaped rectangular structure, while the front guide beam 12 and the rear guide beam 13 both adopt a double-layer triangular truss structure. In this embodiment, the distance between the two piers 10 is 50m, the longitudinal length of the main frame 1 is 123m, the length of the heavy-load support section, i.e., the load-bearing main beam 11, is 56m, the length of the front guide beam is 26.5m, and the length of the rear guide beam is 40.5m. This design ensures that the stability coefficient of both forward and backward tilting during the crossing process reaches 1.5 times, preventing longitudinal overturning of the equipment. This equipment can be applied to a 50m span aqueduct, which is the largest aqueduct in China. The tonnage of the aqueduct that this equipment can cast is also the largest among U-shaped aqueducts in China. The main frame beam adopts a single main beam form, which greatly reduces a series of costs such as manufacturing, transportation, installation and dismantling. At the same time, with the rotation function of the front auxiliary support leg and the lateral movement function of the main support leg and the rear auxiliary support leg, it is more conducive to adapting to curved construction.

[0068] The legs that support the main frame 1 on the pier 10;

[0069] A hoisting device 5 that can reciprocate along the main frame 1; the hoisting device 5 can use an electric hoist.

[0070] A hanging external rib system 6 is installed on the main beam 11, and the hanging external rib system 6 is connected to the external formwork system 7;

[0071] An inner mold system 8 can be accessed from the outer mold system 7. When the inner mold system 8 is located in the outer mold system 7, concrete is poured to form the aqueduct. After the aqueduct is formed, the inner mold system 8 is moved out for equipment movement to facilitate the formation of the next aqueduct.

[0072] The transport vehicle 9, which can move on the top surface of the casting trench, is equipped with its own generator set and can independently transport steel bars. It runs on the top surface of the cast trench and, together with the electric hoist assembly, solves the problem of steel bar placement in the trench during high-pier construction, reducing on-site construction costs.

[0073] The invention also includes an electronic and hydraulic system for providing power and controlling the operation of the equipment.

[0074] like Figure 2As shown in Figure 7, the bottom of the main frame 1 is provided with a jacking rail 15 for the outriggers to push. When the equipment travels, the longitudinal sliding shoes on the outriggers push the jacking rail 15 to move, which drives the main frame 1 to move longitudinally along the extension direction of the pier, and the aqueduct is poured onto the pier in sequence. The main frame 1 is provided with hoisting device rails 51 on both sides; electric hoists 52 are provided on the hoisting device rails 51. There are a total of 4 electric hoists 52 on both sides of the main frame 1. In terms of electrical control, the 4 electric hoists 52 can realize multiple modes such as single hoist operation, longitudinal lifting, lifting by two hoists, and lifting by four hoists together. The electric hoists with multiple combination control modes can conveniently meet the needs of on-site construction.

[0075] Cantilever beams 14 are symmetrically arranged on both sides of the main beam 11, and support beams 16 are arranged on both sides of the front guide beam 12 and the rear guide beam 13. The hoisting device track 51 is located at the bottom of the cantilever beams 14 and the support beams 16.

[0076] like Figure 1 , Figure 8 and Figure 9 As shown, the outriggers include a front auxiliary outrigger 2 that supports the front guide beam 12, a main outrigger 3 that supports the load-bearing main beam 11, and a rear auxiliary outrigger 4 that supports the rear guide beam 13.

[0077] The front auxiliary support leg 2 is a fixed support leg, including a support beam 202. The top of the support beam 202 is equipped with a hanging device 201 connected to the front guide beam 12. Multiple installation positions for the front auxiliary support legs 2 are provided on the lower cover plate of the lower chord of the front guide beam 12. The front auxiliary support legs 2 can be automatically moved to different installation positions via the hanging device 201, thus adapting to construction of different spans. The support beam 202 is connected to the upper beam 203 via a pivot 208, allowing the upper beam 203 and the structure below it to rotate at a certain angle relative to the main frame 1. This, combined with the lateral movement of the main support leg 3 and the rear auxiliary support leg 4, facilitates the equipment's adaptation to curved construction. A hinge assembly 204 is provided at the bottom of the upper beam 203. The system is equipped with fixed columns 205, with a front support cylinder 207 at the bottom of the fixed columns 205. At the bottom of the front support cylinder 207 is a front anchoring longitudinal beam 209 that can connect to the pier 10. The front anchoring longitudinal beam 209 can be fixed to the pier 10 via front threaded steel bars 210, forming a single unit with the pier 10 and serving as support below the outrigger. The front anchoring longitudinal beam 209 solves the problem of the pier 10's narrow longitudinal width. Two fixed columns 205 are symmetrically located at the bottom of the upper crossbeam 203, with a connecting frame 206 between the two fixed columns 205. When the equipment is being constructed at the end of the span, the fixed columns 205 and connecting frame 206 can be removed, and the front support cylinder 207 can be directly installed below the hinge assembly 204. The front auxiliary outrigger 2, including the front anchoring longitudinal beam 209, ensures that the front auxiliary outrigger 2 and the main outrigger 3 are positioned on the same pier 10 without collision, especially when the longitudinal pier is small.

[0078] like Figure 1 , Figure 10 and Figure 11 As shown, the main support leg 3 is a movable support leg, with two locations, supporting the tops of the front and rear piers of the span to be poured, serving as support points for the heavy-load pouring by the trenching machine. It includes a main crossbeam 304, on which a main support bracket 303 is mounted. A main slide block 301 is hinged to the main support bracket 303. The upper end of the main support leg 3 contacts the bottom of the main frame 1 through the two slide blocks 301, bearing the force. A hook device 302 is mounted on the main slide block 301, which is attached to the bottom of the main frame 1. The lower end of the hook device 302 is bolted to… On the main slide 301, the upper end is hooked to the lower cover plate on both sides of the web of the main beam 11 and the lower cover plate of the lower chord of the front guide beam 12 and the rear guide beam 13, which is used to support the weight of the main support leg 3 itself. A main transverse movement cylinder 307 is provided between the main cross beam 304 and the main support bracket 303. The main support bracket 303 can move laterally along the main cross beam 304 under the pushing and pulling action of the main transverse movement cylinder 307. The two ends of the main transverse movement cylinder 307 are respectively hinged to the main cross beam 304 and the main support bracket 303.

[0079] The bottom of the main crossbeam 304 is provided with a main support column 305. The bottom of the main support column 305 is supported on the pier 10 by the main support cylinder 306, so as to realize the lifting of the whole machine and the detachment of itself. The main support column 305 is a box-shaped structure, which is a stable triangular structure in the longitudinal direction of the bridge. The main fine-rolled threaded steel bar 310 is provided between the bottom of the main support column 305 and the pier 10, and is anchored to the pier 10 as a whole to prevent the support leg from tipping over when the equipment is moved longitudinally.

[0080] The main slide block 301 has a longitudinal sliding shoe 309 that is pinned to the push rail 15 on its side wall. A main longitudinal sliding cylinder 308 is provided between the longitudinal sliding shoe 309 and the main support bracket 303. The main longitudinal sliding cylinder 308 drives the machine through hole and its own through hole.

[0081] The principle of the longitudinal sliding shoe 309 pushing the jacking track 15 and the main frame traveling through the hole is existing technology and will not be described in detail here.

[0082] like Figure 1 , Figure 12 and Figure 13As shown, the rear auxiliary support leg 4 is a movable support leg, serving as an auxiliary support leg when the trenching machine passes through the hole. When the rear auxiliary support leg is in the top support state of the trench body, it includes a rear crossbeam 403, which is a box-shaped steel box beam. A rear support bracket 402 is installed on the rear crossbeam 403, and a rear slide block 401 is installed on the rear support bracket 402. The upper end of the rear auxiliary support leg 4 contacts the bottom of the lower cover plate of the lower chord of the rear guide beam 13 through the rear slide block 401. A rear transverse movement cylinder 405 is installed between the rear crossbeam 403 and the rear support bracket 402. Under the pushing and pulling action of the rear transverse movement cylinder 405, the rear support bracket 402 can move along the rear crossbeam 403. The rear crossbeam 403 is symmetrically equipped with two rear distribution beams 404 at its bottom. The rear distribution beams 404 and the rear crossbeam 403 are detachably connected. Each rear distribution beam 404 is symmetrically equipped with two rear support cylinders 406 at its bottom. The four cylinders share the load. The rear auxiliary support leg 4 is supported by cylinders, not by wheel and rail. This does not cause any moving load on the trough surface during equipment construction, which is more conducive to the stress on the trough itself. Compared with the existing equipment, when the existing equipment passes through the hole, the rear auxiliary support leg needs to act on the top of the trough in the form of wheel and rail, which causes a moving load on the trough. However, the solution of this application does not cause any additional load on the trough.

[0083] like Figure 14 As shown in Figure 17, when the rear auxiliary outrigger is supported at the top of the pier and in the roadbed support state, there is no need to install the rear distribution beam 404. Instead, two detachable rear columns 407 are set at the bottom of the rear crossbeam 403. The side of the rear column 407 is provided with diagonal bracing rods 408, and the bottom of the rear column 407 is provided with a rear support cylinder 406. The two rear support cylinders 406 share the load. When the outrigger is supported at the top of the pier and the pier span is narrow, a rear anchoring longitudinal beam 409 is set at the bottom of the rear support cylinder 406. The rear anchoring longitudinal beam 409 is anchored to the pier as a whole by the rear threaded steel bar 410.

[0084] The rear auxiliary outriggers have multiple support modes. In addition to supporting the top of the trench, they can also support the roadbed and trench piers, which can reduce the work of erecting scaffolds on site, adapt to various working conditions, and facilitate on-site construction.

[0085] like Figure 19 and Figure 20 As shown, the hanging outer rib system 6 can be opened from the middle. The hanging outer rib system 6 includes an outer rib 61 connected to the cantilever beam 14. A tie rod 63 is provided inside the outer rib 61. An outer rib tilting cylinder 62 is provided between the outer rib 61 and the cantilever beam 14 to drive the outer rib 61 to carry the outer mold system 7 to rotate, thereby realizing the opening or closing of the outer mold system 7. The tie rod 63 is used to resist the lateral deformation of the outer rib during the pouring process.

[0086] The outer formwork system 7 is located inside the suspended outer rib system 6. The outer formwork system 7 includes a bottom formwork 71 set on the bottom surface of the outer rib 61 and a belly formwork 72 supported on the inner wall of the outer rib 61 by an adjustable support system 73. The bottom of the belly formwork 72 is connected to the bottom formwork 71 by bolts. The belly formwork 72 can move laterally on the panel of the bottom formwork 71. By adjusting the lateral position of the belly formwork 72 on the bottom formwork 71, the bottom formwork 71 can adapt to different bottom widths of the trench, making it easier for the equipment to adapt to different trench shapes, improving the formwork utilization rate, and reducing construction costs.

[0087] like Figure 18 and Figure 21 As shown, the suspended external rib system 6 has pier top support systems 74 at both ends, with the bottom of the pier top support system 74 supported on the pier 10. The suspended external rib system 6 supports the external formwork system 7, resisting the lateral pressure generated by the concrete on the formwork during pouring. Since the pier top section lacks suspended external ribs, a two-meter-long section of the external formwork is laterally unsupported. Therefore, the pier top support system 74 is installed to resist the lateral pressure generated by the external formwork during pouring. The bottom of the pier top support system 74 is connected to the pre-embedded precision-rolled threaded steel bars in the pier, the middle is connected to the web formwork 72 via pins, and the top is tensioned by precision-rolled threaded steel bars. The pier top support system consists of columns and a base. The columns open and close with the web formwork 72 (the opening and closing of the web formwork 72 is achieved by the external rib tilting cylinder 62). Before opening the formwork, the threaded steel bars connected to the pier need to be removed from the base, and then reinstalled after the formwork is closed.

[0088] like Figure 22 — Figure 26 As shown, the internal formwork system 8 includes an internal beam system 801, an internal formwork system 802, and a strut assembly 803;

[0089] The inner beam system 801 includes an inner main beam 811. An inner beam support leg outer sleeve column 812 is installed at the bottom of the inner main beam 811. The inner beam support leg outer sleeve column 812 is fixed to the outside of the lower chord of the inner main beam 811. An inner beam support leg inner sleeve column 813 is installed inside the inner beam support leg outer sleeve column 812. A traveling wheel box 814 for driving the overall displacement of the inner mold system 8 is bolted to the bottom of the inner beam support leg inner sleeve column 813. A column lifting cylinder 815 for controlling the lifting and lowering of the inner main beam 811 is installed between the inner main beam 811 and the inner beam support leg inner sleeve column 813. The strut assembly 803 is located between the inner main beam 811 and the main frame 1, preventing the inner mold system 8 from floating during equipment casting. The lifting and lowering of the inner beam support leg inner sleeve column 813 is achieved through the column lifting cylinder 815, which is convenient and quick. In contrast, in the prior art, a chain hoist is required in conjunction with the main support leg cylinder to achieve its lifting and lowering.

[0090] The inner formwork system 802 includes an inner formwork template 823, within which an inner formwork support outer sleeve 821 is integrally installed. The inner formwork support outer sleeve 821 is connected to the inner formwork support inner sleeve 822 via an inner formwork lateral movement cylinder 824 and an adjustable support rod 826. The inner formwork support inner sleeve 822 is bolted to the inner main beam 811. The lateral contraction and opening of the inner formwork template 823 is achieved by the extension and retraction of the inner formwork lateral movement cylinder 824. The inner formwork template 823 is also equipped with an inner formwork tilting cylinder 825. When the inner formwork template 823 reaches the design position, it is positioned by the adjustable support rod 826. This positioning method can ensure that the inner formwork template 823 remains in the design position even if the inner formwork system 8 deviates slightly during the displacement process, which maximizes the convenience of on-site construction and ensures the quality of the trench. In contrast, the existing inner formwork lateral positioning is achieved by using inner and outer sleeve pins, which can easily lead to situations where the inner and outer sleeve pins cannot be properly inserted, resulting in difficulties in on-site adjustment.

[0091] When the internal mold system passes through the hole, it is driven by a motor. When the construction line is curved, the internal mold can be moved to the hole by disassembling the bolts between the internal beam and the various sections of the internal mold. However, the existing internal mold hole passing method cannot adapt to curved holes.

[0092] After the aqueduct is poured, the inner mold template 823 is flipped upward by the inner mold tilting cylinder 825, and the column lifting cylinder 815 controls the inner beam support leg inner sleeve column 813 to move down and support it in the formed aqueduct. The adjustable support rod 826 is removed and the inner mold template 823 is retracted inward. The whole machine (main frame 1 and the hanging outer rib system 6, outer mold system 7 and support legs connected to it) moves into place.

[0093] Afterwards, the inner beam system moves through the hole. Once it reaches the desired position, the inner formwork template 823 unfolds, and the adjustable support rod 826 is installed. The inner beam support leg inner sleeve column 813 is moved upward and detached (including the lower track) using the column lifting cylinder 815, and the inner formwork template 823 unfolds.

[0094] The new type of large-span, high-tonnage hydraulic aqueduct construction machine of this embodiment can move along the cast-in-place bridge piers and form the aqueduct directly on the bridge piers, which greatly facilitates the construction of the aqueduct.

[0095] This embodiment does not impose any limitation on the shape, material, structure, etc. of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0096] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0097] If the terms "first" or "second" are used in this document to define components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing the invention and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large-span, high-tonnage hydraulic aqueduct construction machine, characterized in that, include: The main frame consists of two and a half spans, including a load-bearing main beam in the middle, with a front guide beam and a rear guide beam at each end of the load-bearing main beam; The outriggers support the main frame on the bridge piers; A hoisting device that can reciprocate along the main frame; The external rib system is installed on the main beam and is connected to the external formwork system. An inner mold system that can be accessed from and exited from the outer mold system; A transport vehicle that can move on the top surface of the casting tank; The bottom of the main frame is provided with a jacking track for the outriggers to push, and the sides of the main frame are provided with hoisting device tracks. The main beam is symmetrically provided with cantilever beams on both sides, and the front guide beam and the rear guide beam are provided with support beams on both sides. The hoisting device track is located at the bottom of the cantilever beams and the support beams. The outriggers include a front auxiliary outrigger supporting the front guide beam, a main outrigger supporting the load-bearing main beam, and a rear auxiliary outrigger supporting the rear guide beam. The front auxiliary support leg includes a support beam, the top of which is provided with a hanging device connected to the front guide beam. The support beam is connected to the upper beam via a pivot. The bottom of the upper beam is provided with a hinge assembly. The bottom of the hinge assembly is provided with a fixed column. The bottom of the fixed column is provided with a front support cylinder. The bottom of the front support cylinder is provided with a front anchoring longitudinal beam that can be connected to the pier. The hanging outer rib system can be opened from the middle. The hanging outer rib system includes an outer rib connected to the cantilever beam, a tie rod is installed inside the outer rib, and an outer rib tilting cylinder is installed between the outer rib and the cantilever beam. The outer mold system is located inside the hanging outer rib system. The outer mold system includes a bottom mold set on the bottom surface of the outer rib and a belly mold connected to the inner wall of the outer rib through an adjustable support system. The bottom of the belly mold is connected to the bottom mold. The two ends of the suspended outer rib system are equipped with pier top support systems, and the bottom of the pier top support system is supported on the pier.

2. The large-span, large-tonnage hydraulic aqueduct construction machine according to claim 1, characterized in that, The main support leg includes a main crossbeam, a main support bracket is provided on the main crossbeam, a main slide is provided on the main support bracket, a hook device is provided on the main slide to be attached to the bottom of the main frame, and a main transverse hydraulic cylinder is provided between the main crossbeam and the main support bracket. The bottom of the main crossbeam is provided with a main support leg column, and the bottom of the main support leg column is supported on the pier by a main support cylinder. The main slide block sidewall is provided with a longitudinal sliding shoe that is pinned to the jacking rail, and a main longitudinal sliding cylinder is provided between the longitudinal sliding shoe and the main support bracket.

3. The large-span, large-tonnage hydraulic aqueduct construction machine according to claim 1, characterized in that, The rear auxiliary outrigger includes a rear crossbeam, a rear support bracket is provided on the rear crossbeam, a rear slide block is provided on the rear support bracket, and a rear transverse hydraulic cylinder is provided between the rear crossbeam and the rear support bracket. The bottom of the rear crossbeam is provided with a detachable rear distribution beam, and the bottom of the rear distribution beam is provided with a rear support cylinder. The bottom of the rear crossbeam is provided with a detachable rear column, the bottom of the rear column is provided with a rear support cylinder, and the bottom of the rear support cylinder is provided with a rear anchoring longitudinal beam that can be connected to the pier.

4. A large-span, large-tonnage hydraulic aqueduct construction machine according to claim 1, characterized in that, The internal formwork system includes an internal beam system, an internal template system, and a strut assembly; The inner beam system includes an inner main beam, an inner beam support leg outer column at the bottom of the inner main beam, an inner beam support leg inner column inside the inner beam support leg outer column, a travel wheel box at the bottom of the inner beam support leg inner column, a column lifting cylinder between the inner main beam and the inner beam support leg inner column, and the strut assembly located between the inner main beam and the main frame. The inner template system includes an inner template, an inner template support outer sleeve is provided inside the inner template, the inner template support outer sleeve is connected to the inner template support inner sleeve through an inner template transverse movement cylinder and an adjustable support rod, the inner template support inner sleeve is set on the inner main beam, and an inner template tilting cylinder is also provided inside the inner template.

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