A top opening and closing mold mechanism for the outer template of immersed tube prefabrication

Abstract

A top opening and closing mechanism for the outer template of immersed tube prefabrication includes a transverse drive assembly and a sliding connection assembly installed between the top truss and the side template truss; the transverse drive assembly includes a top reaction seat, a side reaction seat and a transverse hydraulic cylinder, and the sliding connection assembly includes a slide beam, a sliding seat and a limiter; the slide beam is installed on the top truss; the sliding seat is installed on the top surface of the side template truss, and its top surface is attached to the bottom surface of the slide beam, and the sliding seat is equipped with a limiter, which presses on the surface of the slide beam from top to bottom. In the embodiment of the present invention, the slide beam utilizes the longer length of the top truss itself, so that the side template truss has sufficient moving stroke, and the load-bearing force application point of the side template truss remains fixed, thereby improving stability; the two sliding seats support the top truss at the same time, thereby improving the stability of the top truss; the sliding surface of the slide beam faces downward to avoid contaminants from hindering the sliding, thereby improving the smoothness of the transverse movement.

Description

Technical Field

[0001] The invention belongs to the technical field of immersed tube prefabrication construction, and in particular relates to a top opening and closing mold mechanism for an immersed tube prefabrication outer template. Background Art

[0002] In the existing immersed tube tunnel construction technology, immersed tube tunnels are constructed by prefabricating multiple sections of immersed tubes and sinking them into the water for installation. This method usually includes the use of a mold stand device during the prefabrication process, tying steel bars and pouring concrete in the space between the inner and outer templates to complete the prefabrication of each section of the tunnel.

[0003] The mold stand device includes an inner mold stand and an outer mold stand, which are respectively installed with inner molds and outer molds. Since the length of each section of the immersed tube is still relatively long, in order to control the external dimensions of the mold stand device to reduce costs, each section of the immersed tube is divided into multiple pipe sections and prefabricated in sequence. Since the concrete strength of the previous pipe section can only reach the demoulding requirements, the mold stand device can be moved to the adjacent area for the prefabrication of the next pipe section, which will lead to a decrease in prefabrication efficiency. In order to improve the efficiency of pipe section prefabrication, a top plate steel bar binding cradle is further added to bind the top plate steel bars of the pipe section. After the top plate steel bars are bound, the outer mold stand is used to suspend and support it, so that the top plate steel bar binding cradle is moved out of the steel cage and moved into the inner mold stand for concrete pouring.

[0004] Therefore, the outer mold stand in the mold stand device takes into account the steel bar system conversion support. It has two side mold trusses located on both sides and both of which are installed with side molds, and a top truss whose two ends are respectively connected to the two side mold trusses to span the space between the two side mold trusses. When the steel bar system conversion support is performed, the top plate steel bars are suspended and connected to the top truss. Furthermore, in order to make the side mold truss of the outer mold trolley carry the outer mold to move laterally out of contact with the concrete, and in order to realize the demoulding of the outer mold, the top and bottom of the outer mold trolley are provided with an opening and closing mold transverse movement mechanism. Among them, in the top opening and closing mold transverse movement mechanism, a slide is installed on the top of the side mold truss, and a slider is installed at the end of the top truss. The slider slides on the slide at the top of the side mold truss, and the inner and outer sides of the top of the side mold truss are provided with reverse buckle wheels and pad structures to ensure the structural stability. However, this structure has the following disadvantages:

[0005] 1. The length of the slide is restricted by the width of the side formwork truss, resulting in a shorter relative displacement distance between the outer formwork truss and the top truss. After the outer formwork is separated from the contact with the concrete, the gap between the two is small, and it is difficult for personnel to enter the space to perform concrete maintenance operations. In addition, when the outer formwork stand moves longitudinally and separates from the construction area of ​​the prefabricated pipe section, the outer formwork is easy to contact the concrete again and cause damage to it. In order to increase the interval between the outer formwork and the concrete after demoulding to facilitate construction, the slide needs to be lengthened. However, the slide bears the load of the top truss and cannot be suspended. In order to support the slide, the side formwork truss needs to be widened, which will increase the external dimensions of the side formwork truss, increase the use of materials, occupy more space, increase manufacturing costs, and increase its own weight, which in turn makes it difficult to move horizontally and limits its opening and closing capabilities.

[0006] 2. The side mold truss and the top truss need to slide relative to each other during the mold opening and closing process. Since the structural weight of the top truss is transferred to the side mold truss through the slider, the position of the slider on the slide changes during the mold opening and closing process, causing the position of the structural weight of the top truss acting on the side mold truss to change, causing the center of gravity of the structure to move during the mold opening and closing process, and the structural stability is not easy to guarantee.

[0007] 3. In order to ensure the stability of the structure, it is necessary to set reverse wheels and pad structures on the inside and outside of the top section of the side form truss to prevent the slider from falling out of the end of the slide. At the same time, since the slide is restricted by the top width of the side form truss, its length is limited. In order to ensure that the slider has sufficient moving range on the slide, and then ensure the moving range of the side form truss during the opening and closing process, the opening and closing mold transverse movement mechanism is only equipped with a single slider. The side form truss only bears the weight of the top truss through a single slider, and there is only one fulcrum at the end of the top truss. Under the large span of the top truss and the weight of the top steel bars after the support system is converted, downward bending deformation is easily generated, resulting in the sinking of the top steel bars and the inability of the inner mold trolley to enter the steel cage.

[0008] 4. The conventional slideway faces upward and is easily contaminated by welding slag and concrete during use. It is easy to block the slider during use, resulting in insufficient power of the cylinder and inability to slide. Summary of the invention

[0009] In view of the shortcomings existing in the related technology, the present invention provides a top opening and closing mold mechanism for the immersed tube prefabricated outer formwork to solve the problems of insufficient stroke of the current opening and closing mold structure, the need to widen the side formwork truss, poor stability of the center of gravity change during the opening and closing mold process, insufficient support stability, and the slideway being easily contaminated and unable to slide.

[0010] The present invention provides a top opening and closing mold mechanism for an immersed tube prefabricated outer side mold plate, comprising a transverse drive assembly and a sliding connection assembly installed between a top truss and a side mold truss;

[0011] The traverse drive assembly comprises:

[0012] A top reaction seat connected to the top crossbeam;

[0013] A side reaction seat is mounted on the top surface of the side form truss;

[0014] A transverse hydraulic cylinder, both ends of which are connected to the top reaction seat and the side reaction seat respectively, and the transverse hydraulic cylinder pushes and pulls the side mold truss to move laterally relative to the top truss;

[0015] The sliding connection assembly comprises:

[0016] A slideway beam is mounted on the top truss and is located on the bottom surface of the end portion thereof, and the top reaction seat is mounted on the bottom surface of the slideway beam;

[0017] A sliding seat is installed on the top surface of the side form truss, and its top surface is attached to the bottom surface of the slide beam. When the transverse hydraulic cylinder pushes and pulls the side form truss relative to the top truss to move transversely, the top surface of the sliding seat slides on the bottom surface of the slide beam. At least two sliding seats are installed in the transverse direction.

[0018] A limiting member is installed on each of the sliding seats, and the limiting member presses on the surface of the slide beam from top to bottom, and the limiting member prevents the slide beam from being separated from the contact with the top surface of the sliding seat from bottom to top.

[0019] In some embodiments, at least two slide beams are arranged in parallel along the longitudinal direction, each slide beam is slidably connected to at least two sliding seats, and two adjacent slide beams are connected by a limit support beam arranged along the longitudinal direction;

[0020] Two limit support beams are arranged at intervals along the transverse direction, and the two limit support beams are connected by a limit guide rod installed transversely, and a top limit seat installed on the limit guide rod is fixedly installed on the side formwork truss;

[0021] When the transverse hydraulic cylinder pushes and pulls the side mold truss relative to the top truss to move laterally, the top limit seat slides on the limit guide rod between the two limit support beams.

[0022] In some of the embodiments, sliding limit seats are installed on the bottom surfaces of both ends of the slideway beam, and the two sliding limit seats are respectively aligned with a corresponding one of the limit support beams in the longitudinal direction.

[0023] In some of the embodiments, a longitudinally arranged reaction beam is fixedly installed between two adjacent slide beams, a top reaction seat is fixedly installed on the reaction beam, and the transverse hydraulic cylinder is vertically aligned with the limit guide rod.

[0024] In some of the embodiments, the side reaction seat is a top horizontal through beam arranged along the longitudinal direction, and the top horizontal through beam extends from one end to the other end of the side mold truss in the longitudinal direction and is located between two adjacent sliding seats.

[0025] In some of the embodiments, a top end of the sliding seat has a sliding plate, and both ends of the sliding plate are bent downward in the lateral direction.

[0026] In some of the embodiments, wing plates are horizontally arranged on both sides of the bottom of the slideway beam, and limiting members are slidably installed on the top surfaces of the wing plates on both sides.

[0027] In some embodiments, the limiting member is a buckle wheel, and two pairs of buckle wheels are respectively installed at both ends of the sliding seat in the lateral direction;

[0028] The buckle wheel is mounted on a fixed plate which is vertically arranged along the longitudinal direction of the sliding seat, and the width of the fixed plate gradually decreases from top to bottom.

[0029] In some of the embodiments, the slideway beam is integrally connected to the top truss and is a lower chord beam of the top truss.

[0030] In some of the embodiments, sliding seats are installed at both ends of the transverse upper side mold truss.

[0031] Compared with the prior art, the beneficial effects of the present application are as follows: in the embodiment of the present invention, a slide beam is installed on the top truss, and the sliding seat installed on the side form truss slides on the slide beam installed on the top truss to realize lateral movement of opening and closing the mold. The slide beam utilizes the longer length of the top truss itself, so that the side form truss has sufficient movement stroke. After the mold is opened, the distance between the outer mold and the concrete is large, and personnel can easily enter the interval space to perform concrete maintenance operations. There is no need to increase the width of the side form truss, so that the outer dimensions of the side form truss are narrower and can also meet the lateral movement of opening and closing the mold formed by a larger form, thereby avoiding increasing the material of the side form truss, reducing costs and weight, and making the lateral movement of the side form truss more flexible. In the process of relative sliding of the side form truss and the top truss, the structural weight of the top truss is always passed through the fixed sliding seat Acting on the side form truss, the load-bearing force application point remains fixed, so that the center of gravity of the structure is kept in the center, and the stability of the structure is improved; at least two sliding seats can be installed and accommodated in the space at the top of the side form truss, which will not affect the formation of lateral movement, and at the same time can form multi-point support for the top truss, thereby improving the stability of the top truss and avoiding its flexural deformation during the support system conversion, which may cause the inner mold stand to be unable to enter smoothly; the sliding surface of the slide beam faces downward, and the sliding surface of the sliding seat is covered by the slide beam. Both surfaces are not easily contaminated by welding slag and concrete, avoiding pollutants from hindering sliding, improving the smoothness of lateral movement, and solving the problems of insufficient stroke of the current opening and closing mold structure, the need to widen the side form truss, poor stability of the center of gravity change during opening and closing molds, insufficient support stability, and the slide being easily contaminated and unable to slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 The schematic diagram of the structure of the top opening and closing mold mechanism of the outer template of the immersed tube prefabrication of the present invention Figure 1 ;

[0034] Figure 2 The schematic diagram of the structure of the top opening and closing mold mechanism of the outer template of the immersed tube prefabrication of the present invention Figure 2 ;

[0035] Figure 3 It is a structural schematic diagram of the slideway beam portion of the mold opening and closing mechanism at the top of the immersed tube prefabricated outer template of the present invention.

[0036] Figure 4 The schematic diagram of the structure of the top opening and closing mold mechanism of the outer template of the immersed tube prefabrication of the present invention Figure 3 .

[0037] In the figure:

[0038] 1. Transverse drive assembly; 11. Top reaction seat; 12. Side reaction seat; 13. Transverse hydraulic cylinder;

[0039] 2. Sliding connection assembly; 21. Slideway beam; 22. Sliding seat; 23. Limiting member; 24. Sliding plate; 25. Wing plate; 26. Fixed plate;

[0040] 31. Side formwork truss; 32. Top truss;

[0041] 41. Limit support beam; 42. Limit guide rod; 43. Top limit seat; 44. Sliding limit seat. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figures 1 to 4 As shown, in an illustrative embodiment of the top mold opening and closing mechanism of the immersed tube prefabricated outer template of the present invention, the top mold opening and closing mechanism of the immersed tube prefabricated outer template includes a transverse driving assembly 1 and a sliding connection assembly 2.

[0047] The outer formwork stand includes two side formwork trusses 31 and a top truss 32 respectively mounted on the two side formwork trusses 31 at both ends, and the inner sides of the two side formwork trusses 31 are both equipped with outer formwork. In order to realize the demoulding of the outer formwork after the concrete solidifies, the top and bottom of the outer formwork stand are provided with a mold opening and closing mechanism. The mold opening and closing mechanism at the bottom is arranged on the walking mechanism of the outer formwork stand to realize the lateral movement of the side formwork trusses 31 relative to the bottom surface; the mold opening and closing structure at the top is installed between the side formwork trusses 31 and the top truss 32 to realize the lateral movement of the side formwork trusses 31 relative to the top truss 32. A lateral driving assembly 1 and a sliding connection assembly 2 are respectively installed between the two ends of the top truss 32 and a corresponding side formwork truss 31.

[0048] The traverse drive assembly 1 includes a top reaction seat 11, a side reaction seat 12 and a traverse hydraulic oil cylinder 13. The top reaction seat 11 is mounted on the bottom surface of the slideway beam 21, the side reaction seat 12 is mounted on the top surface of the side mold truss 31, and the two ends of the traverse hydraulic oil cylinder 13 are respectively connected to the top reaction seat 11 and the side reaction seat 12. In order to ensure smooth operation of the traverse hydraulic oil cylinder 13 during its extension and retraction, the connections at both ends are hinged.

[0049] The sliding connection assembly 2 includes a slide beam 21, a sliding seat 22 and a stopper 23. The slide beam 21 is mounted on the top truss 32 and is located at the bottom surface of the end thereof, so that the bottom surface of the slide beam 21 faces downward to the top surface of the top truss 32. At least two sliding seats 22 are installed in the transverse direction, both of which are installed on the top surface of the side mold truss 31. The top surface of the sliding seat 22 faces the bottom surface of the slide beam 21 and is attached thereto, so that the two are in sliding contact. The stopper 23 is installed on each sliding seat 22, and the stopper 23 presses on the surface of the slide beam 21 from top to bottom.

[0050] When the transverse hydraulic cylinder 13 pushes and pulls the side reaction seat 12, the top surface of the sliding seat 22 slides on the bottom surface of the slide beam 21, thereby realizing the lateral movement of the side form truss 31 relative to the fixed top truss 32, so that the outer formwork on the side form truss 31 moves inwardly close to the steel cage for closing the mold or moves outward away from the concrete for opening the mold.

[0051] During the lateral movement of the side form truss 31, the sliding seat 22 fixed on the side form truss 31 slides on the slide beam 21 on the top truss 32. The top truss 32 itself has a longer length in the lateral direction. The slide beam 21 is installed on the top truss 32. Without occupying additional lateral space, the lateral space where the top truss 32 is located can be used to set a longer length to meet the sufficient lateral movement range of the sliding seat 22, thereby meeting the sufficient lateral movement range of the side form truss 31. When demolding, the lateral movement can form a sufficient gap space between the outer formwork and the concrete, so that workers can easily enter and construct. Even when the lateral length of the top truss 32 is insufficient, the lateral length of the top truss 32 is increased to meet the set requirement of the length of the slide beam 21 extending outward relative to the top truss 32 when the outer mold is closed, so that the sliding frame has sufficient sliding stroke when the mold is opened. Compared with widening the side mold truss 31 to lengthen the slide when the slide is set on the side mold truss 31, since the vertical width of the top truss 32 is smaller and the vertical height of the side mold truss 31 is higher, compared with the volume increase brought by lengthening the top truss 32, the volume increase brought by widening the side mold truss 31 is greater, resulting in more material increase, weight increase and cost increase of the side mold truss 31. Therefore, by sliding the sliding seat 22 on the side form truss 31 on the slide beam 21 on the top truss 32, the lateral movement of the side form truss 31 relative to the top truss 32 is achieved, which will only slightly increase or even not increase the material usage of the outer formwork stand, making the outer formwork stand occupy less space, which is not only lower in cost but also convenient for prefabrication of pipe sections in a narrow dry dock.

[0052] When the slideway is set on the side form truss 31, the slider installed on the top truss 32 slides horizontally on the slideway, thereby realizing the lateral movement of the side form truss 31 relative to the top truss 32 and demoulding the outer formwork. However, the weight of the top truss 32 is all transferred to the side form truss 31 through the slider. Due to the movement of the slider on the slideway, the lateral position of the load of the top truss 32 on the top truss 32 changes. When the load acts on the inner part of the top of the top truss 32, the application of the load causes the side form truss 31 to tend to tilt inward, and the center of gravity of the structure moves inward; when the load acts on the outer part of the top of the top truss 32, the application of the load causes the side form truss 31 to tend to tilt outward, and the center of gravity of the structure moves outward, which eventually causes the center of gravity of the structure to be unable to remain in the center position and deviate inward or outward, reducing the stability of the structure and increasing the risk of collapse when the load of the top plate steel bar suspended by the outer formwork stand is the maximum. Therefore, by sliding the sliding seat 22 on the side form truss 31 on the slide beam 21 on the top truss 32, the structural weight of the top truss 32 is transferred to the side form truss 31 through the two fixed sliding seats 22, that is, the load of the top truss 32 acts on the top of the side form truss 31 The position remains fixed, thereby keeping the center of the structure fixed and improving the stability of the structure.

[0053] The upper limit position of the limit piece 23 makes the top surface of the sliding seat 22 always keep in contact with the bottom surface of the slide beam 21. The limit piece 23 and the sliding seat 22 form a clamp for the slide beam 21. Since at least two sliding seats 22 are arranged on the horizontal line, when the top truss 32 suspends the top plate steel bars to convert the support system, the sliding seat 22 located on the innermost side serves as the fulcrum of the top truss 32, and the limit pieces 23 on the remaining sliding seats 22 press down the slide beam 21 to form a vertical support for the end of the top truss 32, thereby improving the stability of the top truss 32 and avoiding its bending deformation, thereby maintaining the stable position of the top steel bars and allowing the inner mold stand to smoothly enter the steel cage.

[0054] In the above-mentioned schematic embodiment, the top opening and closing mold mechanism of the immersed tube prefabricated outer side formwork is installed with a slide beam 21 on the top truss 32, and the sliding seat 22 installed on the side form truss 31 slides on the slide beam 21 installed on the top truss 32 to realize the lateral movement of the opening and closing of the mold. The slide beam 21 utilizes the longer length of the top truss 32 itself to allow the side form truss 31 to have sufficient movement stroke. After the mold is opened, the distance between the outer formwork and the concrete is large, and personnel can easily enter the interval space to perform concrete maintenance operations. There is no need to increase the width of the side form truss 31, so that the side form truss 31 has a narrower outer dimension and can also meet the larger lateral movement of the opening and closing of the mold, thereby avoiding increasing the material of the side form truss 31, reducing costs and reducing weight, and making the lateral movement of the side form truss 31 more flexible. During the relative sliding of the side form truss 31 and the top truss 32, the structural weight of the top truss 32 is always passed through The fixed sliding seat 22 acts on the side form truss 31, and the load-bearing force application point remains fixed, so that the center of gravity of the structure remains in the center, thereby improving the stability of the structure; at least two sliding seats 22 can be installed and accommodated in the space at the top of the side form truss 31, which will not affect the formation of lateral movement, and at the same time can form multi-point support for the top truss 32, thereby improving the stability of the top truss 32 and avoiding its flexural deformation during the support system conversion, which may cause the inner mold stand to be unable to enter smoothly; the sliding surface of the slide beam 21 faces downward, and the sliding surface of the sliding seat 22 is covered by the slide beam 21. Both surfaces are not easily contaminated by welding slag and concrete, thereby avoiding contaminants from hindering sliding, thereby improving the smoothness of lateral movement, and solving the problems of insufficient stroke of the current opening and closing mold structure, the need to widen the side form truss 31, poor stability of the center of gravity change during the opening and closing mold, insufficient support stability, and the slide being easily contaminated and unable to slide.

[0055] In some embodiments, at least two slide beams 21 are arranged in parallel along the longitudinal direction, and each slide beam 21 is slidably connected to at least two sliding seats 22. Two adjacent slide beams 21 are connected by a limiting support beam 41 arranged along the longitudinal direction to form a frame structure, and the four corners of the frame structure are supported by four sliding seats 22, which improves the stability of the top truss 32 during the lateral movement of the side form truss 31 relative to the top truss 32. The four sliding seats 22 are aligned in pairs in the transverse and longitudinal directions, and the center of the rectangular area enclosed by the four sliding seats 22 is aligned with the center of the horizontal cross-section of the side form truss 31, so that when the resultant weight of the top truss 32 acts on the side form truss 31 through the four sliding seats 22, the load of the top truss 32 acts on the center of the side form truss 31, thereby improving the stability of the center of gravity of the structure.

[0056] Two limiting support beams 41 are arranged at intervals in the transverse direction, and the two limiting support beams 41 are connected by a limiting guide rod 42 installed in the transverse direction. A top limiting seat 43 mounted on the limiting guide rod 42 is fixedly installed on the side mold truss 31. The pulling of the limiting guide rod 42 can generate prestress, thereby improving the bending resistance of the slide beam 21 under vertical load, improving its structural stability, and keeping it in a straight line shape. During the lateral movement of the side form truss 31 relative to the top truss 32, the sliding seat 22 will not vertically push and pull the slide beam 21 to cause the top truss 32 to fluctuate up and down, thereby ensuring the stability of the top truss 32, and then ensuring the stability of the top steel bars suspended therefrom; during the lateral movement of the side form truss 31 relative to the top truss 32, the top limiting seat 43 slides on the limiting guide rod 42, and the limiting support beams 41 at both ends limit the sliding formation of the top limiting seat 43; by the sleeve installation of the top limiting seat 43 and the limiting guide rod 42, the connection structure between the side form truss 31 and the top truss 32 is increased, thereby improving the structural stability; the limiting guide rod 42 and the top limiting seat 43 make full use of the space between the slide beams 21 to avoid their structure increasing the overall height of the outer formwork stand, thereby improving the stability of the outer formwork stand.

[0057] In some embodiments, the bottom surfaces of both ends of the slideway beam 21 are both equipped with sliding limit seats 44 , and the two sliding limit seats 44 are respectively aligned with a corresponding one of the limit support beams 41 in the longitudinal direction.

[0058] When the sliding seat 22 slides on the bottom surface of the slideway beam 21, the two sliding limit seats 44 at both ends limit the sliding formation of the sliding seat 22, so as to prevent the sliding seat 22 from sliding too much and causing the limit member 23 to be separated from the slideway beam 21, causing the slideway beam 21 to be separated from the sliding seat 22, thereby maintaining the stability of the sliding connection between the slideway beam 21 and the sliding seat 22, so that the sliding seat 22 can stably support the top truss 32 through the slideway beam 21. The alignment of the sliding limit seat 44 and the limit support beam 41 not only ensures the consistency of the lateral displacement stroke limit of the two, and avoids mutual interference resulting in a reduction in the lateral displacement stroke, but also the installed sliding limit seat 44 can serve as a reinforcing component of the slideway beam 21, and structurally strengthen the part of the slideway beam 21, and the part of the slideway beam 21 is also the part connected to the limit support beam 41, thereby improving the strength of the connection between the slideway beam 21 and the limit support beam 41, and improving the stability of the frame structure composed of the slideway beam 21 and the limit support beam 41.

[0059] In some embodiments, the side reaction seat 12 is a top horizontal through beam arranged along the longitudinal direction. The top horizontal through beam extends from one end to the other end of the side mold truss 31 in the longitudinal direction and is located between two adjacent sliding seats 22.

[0060] The top horizontal through beam is a support beam that is fixedly connected to each truss of the side form truss 31 along the longitudinal direction. It has strong stability and is not easily deformed under the large thrust of the transverse hydraulic cylinder 13, thereby ensuring that the side form truss 31 moves smoothly, and the moving stroke is consistent with the expansion and contraction amount of the transverse hydraulic cylinder 13. In addition, the top horizontal through beam can distribute the thrust of the transverse hydraulic cylinder 13 to each truss of the side form truss 31 longitudinally, so that the force is evenly distributed, and the transverse movement is synchronously and smoothly performed in the longitudinal direction. The top horizontal through beam is located between the sliding seats 22, so that after the thrust of the transverse hydraulic cylinder 13 is transmitted to the side form truss 31, each sliding seat 22 can slide synchronously and smoothly, thereby improving the smoothness of the transverse movement.

[0061] In some embodiments, the top of the sliding seat 22 has a sliding plate 24, and both ends of the sliding plate 24 are bent downward in the lateral direction. The arc-shaped bending at both ends of the sliding plate 24 can prevent the sliding plate 24 from being stuck by the burrs on the surface of the slide beam 21, ensuring smooth lateral sliding of the sliding seat 22, and when the side mold truss 31 moves up and down laterally asynchronously, the surface of the curved portion can stick to the surface of the slide beam 21, ensuring or even enhancing the lateral support of the top truss 32 to the side mold truss 31, keeping the side mold truss 31 stable, and preventing it from tilting excessively and causing the outer mold stand to collapse.

[0062] In some embodiments, wing plates 25 are horizontally arranged on both sides of the bottom of the slide beam 21, and limit members 23 are slidably installed on the top surfaces of the wing plates 25 on both sides. The two limit members 23 can form a longitudinal limit for the slide beam 21 in the longitudinal direction, so as to prevent a single limit member 23 from longitudinally separating from the pressing of the slide beam 21, and maintain the stability of the sliding connection between the slide beam 21 and the sliding seat 22. The wing plates 25 are arranged on both sides of the bottom of the slide beam 21, so that it has an H-shaped box beam structure, which has high strength and is not easy to deform, and prevents the top truss 32 from rising and falling during the lateral movement, thereby ensuring the stability of the lateral movement and sliding.

[0063] In some embodiments, the stopper 23 is a buckle wheel, and two pairs of buckle wheels are respectively installed at both ends of the sliding seat 22 in the transverse direction. The buckle wheels are installed on a fixing plate 26 vertically arranged along the longitudinal direction of the sliding seat 22, and the width of the fixing plate 26 gradually decreases from top to bottom.

[0064] During the lateral movement, the reverse kick wheel presses and limits the slideway beam 21 while rolling in contact with it to maintain smooth lateral movement. The vertically connected fixed plate 26 is not only used to install the reverse kick wheel, but also serves as a reinforcing rib to reinforce the structure of the sliding seat 22 and improve its structural stability. The width of the fixed plate 26 gradually decreases, the wider top stably supports the reverse kick wheel, and the narrower bottom reduces its space occupancy.

[0065] In some embodiments, the slide beam 21 is integrally connected to the top truss 32 and is the lower chord beam of the top truss 32, thereby avoiding the increase in height caused by the additional installation of the beam structure and reducing the manufacturing cost. In addition, as a part of the end of the lower chord beam, the slide beam 21 can be supported by the web rod, so that it has sufficient structural stability.

[0066] In some embodiments, both ends of the transverse upper side mold truss 31 are equipped with sliding seats 22, that is, the ends of the top surface of the transverse upper side mold truss 31 have sliding seats 22, and the structural weight of the top truss 32 can fully act on various positions of the top of the side mold truss 31 in the transverse direction. The side mold truss 31 is more fully loaded by the top truss 32 to improve its stability.

[0067] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A top opening and closing mold mechanism for an immersed tube prefabrication outer template, characterized in that: It includes a traverse drive assembly and a sliding connection assembly installed between the top truss and the side form truss; The traverse drive assembly comprises: A top reaction seat connected to the top crossbeam; A side reaction seat is mounted on the top surface of the side form truss; A transverse hydraulic cylinder, both ends of which are connected to the top reaction seat and the side reaction seat respectively, and the transverse hydraulic cylinder pushes and pulls the side mold truss to move laterally relative to the top truss; The sliding connection assembly comprises: A slideway beam is mounted on the top truss and is located on the bottom surface of the end portion thereof, and the top reaction seat is mounted on the bottom surface of the slideway beam; A sliding seat is installed on the top surface of the side form truss, and its top surface is attached to the bottom surface of the slide beam. When the transverse hydraulic cylinder pushes and pulls the side form truss relative to the top truss to move transversely, the top surface of the sliding seat slides on the bottom surface of the slide beam. At least two sliding seats are installed in the transverse direction. A limiting member is installed on each of the sliding seats, and the limiting member presses on the surface of the slide beam from top to bottom, and the limiting member prevents the slide beam from being separated from the contact with the top surface of the sliding seat from bottom to top.

2. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: At least two slide beams are arranged in parallel along the longitudinal direction, each of the slide beams is slidably connected to at least two sliding seats, and two adjacent slide beams are connected by a limit support beam arranged along the longitudinal direction; Two limit support beams are arranged at intervals in the transverse direction, and the two limit support beams are connected to each other by a limit guide rod installed in the transverse direction, and a top limit seat sleeved and installed on the limit guide rod is fixedly installed on the side form truss; When the transverse hydraulic cylinder pushes and pulls the side mold truss relative to the top truss to move laterally, the top limit seat slides on the limit guide rod between the two limit support beams.

3. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 2 is characterized in that: The bottom surfaces of both ends of the slideway beam are each provided with a sliding limit seat, and the two sliding limit seats are respectively aligned with a corresponding one of the limit support beams in the longitudinal direction.

4. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 2 is characterized in that: A longitudinally arranged reaction beam is fixedly installed between two adjacent slideway beams, the top reaction seat is fixedly installed on the reaction beam, and the transverse hydraulic cylinder is vertically aligned with the limit guide rod.

5. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: The side reaction seat is a top horizontal through beam arranged along the longitudinal direction. The top horizontal through beam extends from one end of the side mold truss to the other end in the longitudinal direction and is located between two adjacent sliding seats.

6. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: The top end of the sliding seat is provided with a sliding plate, and both ends of the sliding plate are bent downward in the transverse direction.

7. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: Wing plates are horizontally arranged on both sides of the bottom of the slideway beam, and the limiting parts are slidably installed on the top surfaces of the wing plates on both sides.

8. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 7 is characterized in that: The position-limiting member is a buckle wheel, and two pairs of buckle wheels are respectively installed at two ends of the sliding seat in the transverse direction; The buckle wheel is mounted on a fixing plate which is vertically arranged along the longitudinal direction of the sliding seat, and the width of the fixing plate gradually decreases from top to bottom.

9. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: The slideway beam is integrally connected to the top truss and is the lower chord beam of the top truss.

10. The top opening and closing mold mechanism of the immersed tube prefabrication outer template according to claim 1 is characterized in that: The sliding seats are installed at both ends of the side mold truss in the horizontal direction.

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