Hollow slab beam bridge support cushion stone pouring tool

Abstract

The utility model relates to the technical field of pouring tools, especially hollow slab beam bridge support padstone pouring tool, including pouring mould and is used for assembling padstone pouring cavity of different sizes, and the pouring mould includes: main part subassembly, including the mould seat for the shaped concrete, the four corners of mould seat rear end all are fixed with the assembly head, and the inside of assembly head is provided with locking hole, and the four corners of mould seat front end all are provided with assembly hole and cooperate with assembly head, assembly subassembly includes the cavity of setting up in the inside left and right two ends front side of mould seat, the inside middle of cavity rotates and installs the axle rod, and the outer wall of axle rod is fixed with gear, and the inside front and back two ends of cavity all are fixed with guide rod, and the rack of sliding installation has on guide rod, and the end of rack is fixed with locking head and cooperates with locking hole, realize the quick alignment and firm locking of module, and the formwork erection efficiency and precision are greatly promoted, effectively prevent the leakage of pulp, guarantee padstone forming quality and construction stability.

Description

Technical Field

[0001] This utility model relates to the field of casting tools technology, specifically to a casting tool for the bearing pad stone of a hollow slab beam bridge. Background Technology

[0002] Hollow slab girder bridges are a widely used bridge type in modern highway and urban bridges, known for their low structural height, high degree of prefabrication, convenient construction, and good economy. In the structural system of hollow slab girder bridges, the bearing pads, as key force-transfer components connecting the upper slab girder and the lower pier (or cap beam), bear the important function of effectively transferring the beam load to the pier and allowing the beam to deform appropriately.

[0003] According to CN207900172U, a large steel structure casting mold is disclosed. This technology discloses a technical solution including "splicing plates, connecting plates, and top screws set on the casting mold shell. The casting mold shell has a U-shaped structure. Splicing plates are attached to both the front and rear sides of the casting mold shell. Connecting plates are fixed to both the front and rear sides of both ends of the casting mold shell. In this device, the splicing plates on both sides of the casting mold shell are fixed by fixing rods, which is convenient for disassembly and assembly. If the splicing plates are not easy to fall off, the top screws can be driven by a rocker to push out the splicing plates on both sides, which will not cause wear to the large steel structure inside the casting mold shell, thus improving the quality of the large steel structure. The casting mold shell and the splicing plates are sealed by slots and edges, so the large steel structure after casting is less likely to produce scraps, which is beneficial for subsequent processing, improves the casting efficiency of large steel structures, reduces production costs, and is suitable for promotion."

[0004] In existing bearing pad construction, dispersed templates and independent fasteners are often used for assembly. Due to the lack of a linkage positioning mechanism between the components, construction workers need to repeatedly adjust the template position and tighten the connection points one by one during operation. This process is prone to misalignment between adjacent templates due to human error or improper tightening sequence. This misalignment will create gaps at the template joints, causing grout leakage during concrete pouring. This not only affects the appearance quality of the pad but also reduces the strength of the concrete at the joints, directly affecting the overall load-bearing capacity and durability of the bearing pad. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tool for casting bearing pad stones for hollow slab beam bridges, enabling rapid alignment and secure locking of modules, significantly improving formwork efficiency and precision, effectively preventing grout leakage, and ensuring the quality of pad stone forming and construction stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool for casting bearing pad stones for hollow slab beam bridges, comprising a casting mold for assembling pad stone casting cavities of different sizes, the casting mold comprising:

[0007] The main components include a mold base for shaping concrete, with assembly heads fixed at the four rear corners of the mold base. Locking holes are provided inside the assembly heads, and assembly holes are provided at the four front corners of the mold base to cooperate with the assembly heads.

[0008] The assembly includes cavities located inside the front sides of the left and right ends of the mold base. A shaft is rotatably mounted in the middle of the cavity. A gear is fixed to the outer wall of the shaft. Guide rods are fixed at both the front and rear ends of the cavity. A rack is slidably mounted on the guide rod. A locking head is fixed to the end of the rack and engages with a locking hole. A spring is sleeved on the guide rod and used to push the rack to reset.

[0009] Preferably, the main component further includes a concave surface at the front end of the mold base, and a convex surface at the rear end of the mold base that cooperates with the concave surface.

[0010] Preferably, the main component further includes a recessed strip on the upper end of the mold base, and a protruding strip on the lower end of the mold base that cooperates with the recessed strip.

[0011] Preferably, the gear meshes with the racks on the left and right sides, and the racks on both sides are arranged in a symmetrical staggered manner.

[0012] Preferably, the outer end surface of the shaft has an internal hexagonal hole for inserting an internal hexagonal tool for rotational adjustment.

[0013] Preferably, the inner wall surface of the mold base is provided with a release layer, and the release layer is a release liner made of engineering plastic.

[0014] Beneficial effects

[0015] This utility model provides a tool for casting bearing pad stones for hollow slab beam bridges. Compared with the prior art, it has the following advantages:

[0016] 1. During assembly, firstly, a tool is used to pre-rotate the shaft of one mold base. This, through the engagement of the gear with the shaft, drives the racks on both sides, causing them to overcome the spring force and slide along the guide rod into the cavity. This causes the locking head to fully retract into the mold base contour. At this point, the assembly head at the rear end of the other mold base can be smoothly inserted into the assembly hole at the front end of the first mold base. Once the assembly head is in place, the torsional force on the shaft is removed, releasing the elastic potential energy stored in the spring. This pushes the racks and locking head outward, allowing them to precisely insert into the locking hole on the assembly head, forming a secure mechanical interlock. This achieves a fast, precise, and reliable connection between mold bases, resulting in a smooth and efficient assembly process that improves construction quality and efficiency.

[0017] 2. When the convex surface at the rear end of one mold base is pushed toward the concave surface at the front end of another mold base, the two mating concave and convex structures first guide the assembly head to slide accurately into the assembly hole. After final locking, the tight fit between the convex and concave surfaces forms an effective sealing barrier. When the height of the pad stone needs to be increased and the upper mold base is stacked on top of the lower mold base, the concave strip at the upper end of the lower mold base provides a natural guide groove for the convex strip of the upper layer, ensuring that the upper and lower mold bases are quickly aligned. After final positioning, the tight engagement of the convex and concave strips forms a sealing path at the joint surface of the two mold bases. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front end of the present invention;

[0019] Figure 2 This is a schematic diagram of the rear end structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of part A in the middle.

[0022] In the diagram: 1. Casting mold; 11. Main component; 111. Mold base; 112. Assembly head; 113. Locking hole; 114. Assembly hole; 115. Concave surface; 116. Convex surface; 117. Concave strip; 118. Convex strip; 12. Assembly component; 121. Cavity; 122. Shaft; 123. Gear; 124. Guide rod; 125. Rack; 126. Locking head; 127. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a tool for casting bearing pad stones for hollow slab beam bridges, including a casting mold 1 for assembling pad stone casting cavities of different sizes. The casting mold 1 includes:

[0025] The main component 11 includes a mold base 111 for shaping concrete. Each of the four rear corners of the mold base 111 is fixed with an assembly head 112. The assembly head 112 has a locking hole 113 inside. Each of the four front corners of the mold base 111 has an assembly hole 114 that cooperates with the assembly head 112.

[0026] Assembly component 12 includes cavities 121 formed inside the front sides of the left and right ends of mold base 111. A shaft 122 is rotatably mounted in the middle of the cavity 121. A gear 123 is fixed to the outer wall of the shaft 122. Guide rods 124 are fixed at both the front and rear ends of the cavity 121. A rack 125 is slidably mounted on the guide rod 124. A locking head 126 is fixed at the end of the rack 125 and cooperates with the locking hole 113. A spring 127 is sleeved on the guide rod 124 and used to push the rack 125 to reset.

[0027] In this embodiment, during assembly, the shaft 122 of one mold base 111 is first rotated using a tool. The gear 123 fixed to it meshes with the shaft, driving the racks 125 on both sides to overcome the spring force of the spring 127 and slide along the guide rod 124 into the cavity 121. This causes the locking head 126 to fully retract into the contour of the mold base 111. At this point, the assembly head 112 at the rear end of the other mold base 111 can be smoothly inserted into the assembly hole 114 at the front end of the mold base. Once the assembly head 112 is in place, the torsional force on the shaft 122 is removed, releasing the elastic potential energy stored in the spring 127. This pushes the racks 125 and locking head 126 outwards, allowing them to precisely insert into the locking hole 113 on the assembly head 112, forming a secure mechanical interlock. This achieves a fast, precise, and reliable connection between the mold bases 111, resulting in a smooth and efficient assembly process that improves construction quality and efficiency.

[0028] Specifically, the main body component 11 also includes a concave surface 115 formed at the front end of the mold base 111, and a convex surface 116 formed at the rear end of the mold base 111 that cooperates with the concave surface 115.

[0029] In this embodiment, when the convex surface 116 at the rear end of one mold base 111 is pushed toward the concave surface 115 at the front end of another mold base 111, the two mating concave and convex structures are first guided to guide the assembly head 112 to slide accurately into the assembly hole 114. After final locking, the tight fit between the convex surface 116 and the concave surface 115 forms an effective sealing barrier.

[0030] Specifically, the main body component 11 also includes a recessed strip 117 formed on the upper end of the mold base 111, and a protruding strip 118 formed on the lower end of the mold base 111 to cooperate with the recessed strip 117.

[0031] In this embodiment, when the height of the pad stone needs to be increased and the upper mold base 111 is stacked on top of the lower mold base 111, the concave strip 117 at the upper end of the lower mold base 111 provides a natural guide groove for the convex strip 118 of the upper layer, ensuring that the upper and lower mold bases 111 are quickly aligned, and after final positioning, the tight engagement of the convex strip 118 and the concave strip 117 forms a sealing path at the joint surface of the two mold bases 111.

[0032] Specifically, the gear 123 meshes with the racks 125 on the left and right sides, and the racks 125 on both sides are arranged in a symmetrical staggered manner.

[0033] In this embodiment, when the operator rotates the shaft 122, the gear 123 fixed on it rotates synchronously. By utilizing the interaction of the gear teeth, the two racks 125 can be driven to move in opposite directions along their respective guide rods 124, or they can be made to retract towards each other to unlock, or they can be pushed outward by the spring force 127 to lock. The staggered layout allows the two racks 125 and their locking heads 126 at their ends to avoid each other on the movement trajectory and not interfere with each other.

[0034] Specifically, the outer end surface of the shaft 122 is provided with an internal hexagonal hole for inserting an internal hexagonal tool for rotational adjustment.

[0035] In this embodiment, by embedding the drive interface inside the structural contour of the mold base 111, it is ensured that when multiple mold bases 111 are assembled side by side or at corners, the sides of adjacent mold bases 111 can be seamlessly fitted, and the existence of the operation interface does not occupy any additional external space.

[0036] Specifically, the inner wall surface of the mold base 111 is provided with a release layer, and the release layer is a release liner made of engineering plastic material.

[0037] In this embodiment, complete and non-destructive demolding can be achieved during demolding, ensuring that the side of the support pad stone has extremely high smoothness and complete edges.

[0038] The working principle and usage process of this utility model are as follows: First, modular assembly is performed according to the required size of the pad stones. During assembly, a tool is first used to pre-rotate the shaft 122 of one mold base 111. The gear 123 fixed to it meshes with the shaft 122, driving the racks 125 on both sides to overcome the elastic force of the spring 127 and slide along the guide rod 124 into the cavity 121, thereby causing the locking head 126 to fully retract into the contour of the mold base 111. Next, a lateral connection is performed. At this time, the assembly head 112 at the rear end of the other mold base 111 can be smoothly inserted into the front end of the mold base. In the assembly hole 114, during this process, when the convex surface 116 at the rear end of one mold base 111 is pushed towards the concave surface 115 at the front end of another mold base 111, the pair of mating concave and convex structures first guide the assembly head 112 to slide accurately into the assembly hole 114; then locking is completed. After the assembly head 112 is in place, the torsional force on the shaft 122 is removed, and the elastic potential energy stored in the spring 127 is released, pushing the rack 125 and the locking head 126 to move outward, so that they are accurately inserted into the locking hole 113 on the assembly head 112, forming a firm mechanical interlock.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for casting bearing pad stones for hollow slab beam bridges, characterized in that: Including a casting mold (1) and used for assembling into casting cavities of different sizes for foundation stones, the casting mold (1) includes: The main component (11) includes a mold base (111) for shaping concrete. Each of the four rear corners of the mold base (111) is fixed with an assembly head (112). The assembly head (112) has a locking hole (113) inside. Each of the four front corners of the mold base (111) has an assembly hole (114) that cooperates with the assembly head (112). The assembly component (12) includes cavities (121) opened inside the front sides of the left and right ends of the mold base (111). A shaft (122) is rotatably installed in the middle of the cavity (121). A gear (123) is fixed on the outer wall of the shaft (122). Guide rods (124) are fixed at both the front and rear ends of the cavity (121). A rack (125) is slidably installed on the guide rod (124). A locking head (126) is fixed at the end of the rack (125) and cooperates with the locking hole (113). A spring (127) is sleeved on the guide rod (124) and used to push the rack (125) to reset.

2. The tool for casting bearing pad stones for hollow slab beam bridges according to claim 1, characterized in that: The main component (11) also includes a concave surface (115) at the front end of the mold base (111), and a convex surface (116) at the rear end of the mold base (111) that cooperates with the concave surface (115).

3. The tool for casting bearing pad stones for hollow slab beam bridges according to claim 1, characterized in that: The main component (11) also includes a recessed strip (117) on the upper end of the mold base (111), and a protruding strip (118) on the lower end of the mold base (111) that cooperates with the recessed strip (117).

4. The tool for casting bearing pad stones for hollow slab beam bridges according to claim 1, characterized in that: The gear (123) meshes with the racks (125) on the left and right sides, and the racks (125) on both sides are arranged in a symmetrical staggered manner.

5. The tool for casting bearing pad stones for hollow slab beam bridges according to claim 1, characterized in that: The outer end surface of the shaft (122) is provided with an internal hexagonal hole for inserting an internal hexagonal tool for rotation adjustment.

6. The tool for casting bearing pad stones for hollow slab beam bridges according to claim 1, characterized in that: The inner wall surface of the mold base (111) is provided with a release layer, and the release layer is a release liner made of engineering plastic material.

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