Platform expansion joint pouring tool

Abstract

This utility model relates to the field of roadbed construction, specifically to a platform expansion joint pouring fixture, comprising a foam board, square steel, and a limiting component. The foam board has a thickness adapted to the width of the expansion joint. The square steel has a groove with a thickness adapted to the thickness of the foam board, the groove being arranged along the length of the square steel. The limiting component is located on one or both sides of the foam board and abuts against the side of the square steel. This utility model, by setting a rigid square steel with grooves and a foam board to form a composite template, can achieve rigid constraint on the shape of the reserved expansion joint, effectively resisting the impact of concrete pouring, and ensuring that the formed expansion joint has a straight line and uniform width.

Description

Technical Field

[0001] This utility model relates to the field of roadbed construction, and in particular to a platform expansion joint pouring tool. Background Technology

[0002] In roadbed construction, expansion joints are usually required for concrete structures such as side ditches and platforms to accommodate thermal expansion and contraction caused by temperature changes, prevent irregular cracking of the concrete structure, and ensure its overall stability and service life.

[0003] In traditional construction, foam boards are used to construct expansion joints. However, because foam boards are soft and easily deformed, they are prone to displacement, twisting, or floating under the lateral pressure of poured concrete, making it difficult to guarantee the straightness and verticality of the pre-reserved joints. The final expansion joints often exhibit irregular lines and "wavy" defects of varying widths, resulting in poor aesthetics. Furthermore, the foam at the top of the expansion joint is difficult to remove, affecting subsequent filling with asphalt and hemp rope.

[0004] Therefore, a technical solution is needed to address the technical problems in traditional construction where foam boards are used as templates for pre-embedding and pouring expansion joints, making it difficult to guarantee the shape of the expansion joints and making it difficult to remove the foam from the top of the expansion joints, which affects the subsequent filling with asphalt and hemp rope. Utility Model Content

[0005] The purpose of this utility model is to overcome the technical problems in the existing technology of using foam board pre-embedded as a template for pre-embedding and pouring expansion joints, which makes it difficult to ensure the shape of the expansion joint and makes it difficult to remove the foam at the top of the expansion joint, affecting the subsequent filling of asphalt and hemp rope. The present invention provides a platform expansion joint pouring tool.

[0006] In a first aspect, this utility model provides a platform expansion joint pouring fixture, including a foam board, square steel, and a limiting component. Foam board: Its thickness is adapted to the width of the expansion joint; Square steel: It is provided with a slot whose thickness is adapted to the thickness of the foam board, and the slot is set along the length direction of the square steel; Limiting component: disposed on one or both sides of the foam board and abutting against the side of the square steel.

[0007] This utility model platform expansion joint pouring tool first inserts a foam board into the groove at the bottom of the square steel to form a tight temporary assembly. Then, the assembly is positioned and fixed by limiting components set on one or both sides of the foam board to ensure accurate installation and verticality. Then, the platform concrete is poured and vibrated. When the concrete has initially set (has a certain strength but is not yet fully hardened), the operator vertically removes the square steel from the concrete by lifting it upwards. After the concrete has completely solidified, the foam board at the top of the expansion joint is removed to form a groove with uniform depth and flat walls, which is ready for subsequent filling with asphalt hemp rope and sealant.

[0008] Preferably, the depth of the slot is h, where 4cm ≤ h ≤ 6cm.

[0009] A groove depth of ≥4cm ensures that the square steel has sufficient embedment depth to effectively resist the buoyancy and lateral impact during concrete pouring, thus guaranteeing the molding quality. A depth of ≤6cm ensures that the square steel is not buried too deep and can still be easily pulled out after the concrete has initially set, avoiding problems such as difficulty in removal or damage to the concrete edges and corners. At the same time, it provides a standard and sufficient operating space for subsequent filling with asphalt hemp rope.

[0010] Preferably, the square steel is provided with a lifting ring at the top.

[0011] The lifting ring provides operators with a clear point of force application, making the process of pulling out the tool more labor-saving and efficient. Furthermore, the force direction is vertically upward, avoiding damage to the integrity and aesthetics of the concrete on both sides of the expansion joint caused by prying or other methods of removal, which greatly improves the convenience and safety of construction.

[0012] Preferably, the limiting component includes at least one vertical rib, and the side of the square steel is provided with a lug, and the lug is provided with a limiting hole for installing the vertical rib.

[0013] Through the cooperation of the lugs and limiting holes, the vertical reinforcement and the square steel form a detachable connection, realizing the limiting of the square steel part of the tooling. Moreover, this structure allows for flexible replacement of vertical reinforcement of different lengths or forms according to the hardness of the foundation soil, making it highly versatile.

[0014] Preferably, it further includes a fixing base, the fixing base including a limiting plate, the bottom of the limiting plate being provided with a pin, and the top of the limiting plate being provided with a sleeve for installing the vertical rib.

[0015] The design of the fixing seat changes the point contact between the upright reinforcement and the ground to a surface contact. The limiting plate significantly increases the stress area, effectively preventing the upright reinforcement from sinking in soft foundation. The bottom pin can be inserted into the foundation, enhancing the stability of the upright reinforcement and ensuring the overturning resistance of the entire fixture during concrete pouring. At the same time, it separates the operation of inserting the lower part into the foundation from the operation of inserting the upright reinforcement into the ear piece, making the operation simpler.

[0016] Preferably, the limiting component includes two vertical ribs, which are symmetrically arranged on both sides of the square steel in the width direction.

[0017] Symmetrically arranged vertical reinforcement bars can balance the lateral pressure applied by the concrete from both sides, preventing the tooling from twisting or tilting when subjected to unilateral pressure, thus ensuring that the final expansion joint always remains straight and vertical, with extremely high linear aesthetics.

[0018] Preferably, the number of the limiting components is at least two, and the two limiting components are respectively disposed on both sides of the square steel along its length.

[0019] For long square steel fixtures, limiting components are installed at both ends to effectively prevent the long fixtures from bending and deforming due to stress in the middle, thus ensuring the straightness of the entire long expansion joint.

[0020] Preferably, the square steel is a carbon steel structural component, and the two sides of the square steel in the width direction are provided with a chromium layer.

[0021] Using carbon steel as the base material ensures the strength of the tooling body and low manufacturing cost. Chromium plating on its outer surface creates an extremely smooth, hard, and chemically stable surface. The smooth surface of the chromium layer has very low adhesion to concrete, which can effectively prevent cement slurry from sticking to the tooling surface during initial setting, achieving a near-non-stick effect. After the concrete has initially set, construction workers can pull the tooling out vertically with very little effort, without prying, and with almost no resistance. This greatly reduces wear and tear on the tooling. More importantly, it completely avoids the possibility of damaging the concrete edges on both sides of the expansion joint when removing it due to excessive adhesion, ensuring the neatness, aesthetics, and integrity of the joint.

[0022] Preferably, the square steel comprises several segment blocks, which are sequentially spliced ​​together, and adjacent segment blocks are fixed together by a connecting plate.

[0023] The square steel adopts a modular design, which allows the tooling to be flexibly assembled according to the required expansion joint length, adapting to the needs of projects of different scales. At the same time, the disassembled short sections of tooling are easier to transport and store, solving the problem of inconvenient handling of long tooling, reducing logistics and storage costs, and making it more practical.

[0024] Preferably, the segment block has threaded holes on both sides of its length direction, and the connecting plate has connecting holes on both sides of its length direction that are adapted to the threaded holes, and each connecting hole is equipped with a fastening bolt.

[0025] By connecting the connecting plate across the segment block joint and securing it with bolts, a robust rigid connection is formed, which can effectively resist the lateral pressure during concrete pouring. Moreover, the bolt connection method is simple to operate, and assembly and disassembly can be quickly completed using ordinary tools, which greatly improves on-site construction efficiency and saves labor and time costs.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a platform expansion joint pouring fixture. By setting a rigid square steel with a slot and embedding it with a foam board to form a composite template, it can achieve rigid constraint on the shape of the reserved expansion joint, effectively resist the impact of concrete pouring, and ensure that the expansion joint after molding is straight and has a uniform width. 2. This utility model provides a platform expansion joint pouring fixture. By combining a removable square steel structure with a pre-reserved foam board, the fixture can be easily removed after the concrete has initially set, and an upper cavity is formed in the pre-reserved joint. This facilitates quick cleaning of the upper foam and provides accurate depth and smooth trench wall construction conditions for the subsequent standardized filling of asphalt hemp rope. 3. This utility model provides a platform expansion joint pouring fixture. By setting a limiting component on one or both sides of the foam board that abuts against the side of the square steel, the position of the composite template can be effectively fixed to prevent it from shifting or tilting during the pouring process, thus ensuring accurate positioning of the expansion joint. Attached Figure Description

[0027] Figure 1 This is the main view of the platform expansion joint pouring fixture of this utility model; Figure 2 This is a top view of the platform expansion joint pouring fixture of this utility model; Figure 3 This is a bottom view of the square steel described in this utility model; Marked in the image: 1-Foam board, 2-Square steel, 21-Segment block, 211-Slot, 212-Lifting ring, 213-Ear, 2131-Limiting hole, 3-Limiting component, 31-Vertical rib, 4-Fixing base, 41-Limiting plate, 42-Pin, 43-Sleeve, 5-Connecting plate, 51-Fasting bolt. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example 1 This embodiment provides a platform expansion joint pouring fixture, including a foam board 1, a square steel bar 2, and a limiting component 3. Foam board 1: such as Figure 1 As shown, its thickness is adapted to the width of the expansion joint; Square steel 2: such as Figure 1 As shown, a slot 211 with a thickness adapted to the thickness of the foam board 1 is provided, and the slot 211 is arranged along the length direction of the square steel 2; Limiting component 3: such as Figure 1 and 2 As shown, it is disposed on one or both sides of the foam board 1 and abuts against the side of the square steel 2.

[0035] In optional implementations, such as Figure 3 As shown, the depth of the slot 211 can be set between 4cm and 6cm. A depth of ≥4cm ensures that the square steel 2 has sufficient embedment depth to effectively resist the buoyancy and lateral impact during concrete pouring, thus ensuring the molding quality. A depth ≤6cm ensures that the square steel 2 will not be buried too deep and can still be easily pulled out after the concrete has initially set, avoiding the problems of difficult removal or damage to the concrete edges and corners. At the same time, it provides a standard and sufficient operating space for subsequent filling with asphalt hemp rope.

[0036] In optional implementations, such as Figure 1 and Figure 2 As shown, a lifting ring 212 can be installed on the top of the square steel 2, providing the operator with a clear point of force application, making the process of pulling out the tool more labor-saving and efficient. Moreover, the direction of force is vertically upward, avoiding damage to the integrity and aesthetics of the concrete on both sides of the expansion joint due to prying or other methods of removal, which greatly improves the convenience and safety of construction.

[0037] In an optional implementation, such as Figure 1 As shown, square steel 2 can be made of carbon steel, and chromium layers are set on both sides of square steel 2 in the width direction. This ensures the strength of the main body of the tooling and the low manufacturing cost. The chromium plating on its outer surface creates an extremely smooth, hard and chemically stable surface. The smooth surface of the chromium layer has very low adhesion to concrete, which can effectively prevent cement slurry from sticking to the surface of the tooling during initial setting, achieving a near-non-stick effect. After the concrete has initially set, the construction workers can pull the tooling out vertically with very little effort, without prying, and with almost no resistance. This greatly reduces the wear and tear on the tooling. More importantly, it completely avoids the possibility of damaging the concrete edges on both sides of the expansion joint when removing it due to excessive adhesion, ensuring the neatness, beauty and integrity of the joint.

[0038] In one or more implementations, such as Figure 1 and Figure 2 As shown, the limiting component 3 may include at least one vertical rib 31. The side of the square steel 2 is provided with a lug 213. The lug 213 is provided with a limiting hole 2131 for installing the vertical rib 31. Through the cooperation of the lug 213 and the limiting hole 2131, the vertical rib 31 and the square steel 2 form a detachable connection, realizing the limiting of the square steel 2 part of the tooling. Moreover, this structure allows for flexible replacement of vertical ribs 31 of different lengths or forms according to the hardness of the foundation soil, and has strong versatility.

[0039] In optional implementations, such as Figure 1 As shown, a fixing seat 4 can be provided at the bottom of the upright rib 31. The fixing seat 4 includes a limiting plate 41. The bottom of the limiting plate 41 is provided with a pin 42. The top of the limiting plate 41 is provided with a sleeve 43 for installing the upright rib 31. The design of the fixing seat 4 changes the point contact between the upright rib 31 and the ground to a surface contact. The limiting plate 41 significantly increases the force-bearing area, effectively preventing the upright rib 31 from sinking in soft foundation. The pin 42 at the bottom can be inserted into the foundation, enhancing the stability of the upright rib 31 and ensuring the overturning resistance of the entire fixture during concrete pouring. At the same time, the operation of inserting the lower part into the foundation and the operation of inserting the upright rib 31 into the ear piece 213 are separated, making the operation simpler.

[0040] In optional implementations, such as Figure 1 As shown, the limiting component 3 may include two vertical ribs 31. The two vertical ribs 31 are symmetrically arranged on both sides of the width direction of the square steel 2. The symmetrically arranged vertical ribs 31 can balance the lateral pressure applied by the concrete from both sides, prevent the tooling from twisting or tilting when subjected to unilateral pressure, thereby ensuring that the final formed expansion joint always remains straight and vertical, with extremely high linear aesthetics.

[0041] In an optional implementation, such as Figure 2 As shown, the number of limiting components 3 is at least two, and the two limiting components 3 are respectively arranged on both sides of the length direction of the square steel 2. For the square steel 2 tooling with a large length, limiting components 3 are set at both ends, which can effectively prevent the long strip tooling from bending and deforming due to the force in the middle, and ensure the straightness of the entire long-dimensional expansion joint.

[0042] In one or more implementations, such as Figure 1 and Figure 2As shown, the square steel 2 can be assembled from several segment blocks 21 in sequence. A connecting plate 5 is set between two adjacent segment blocks 21. The connecting plate 5 can be set on the top of the square steel 2 or the bottom of the slot 211, or the connecting plate 5 can be set on both the top of the square steel 2 and the bottom of the slot 211. When the connecting plate 5 is set at the bottom of the slot 211, the depth of the slot 211 needs to be increased to ensure the installation depth of the foam board 1. The two sides of the connecting plate 5 are connected to the two adjacent segment blocks 21 by fastening bolts 51 respectively. It can be flexibly assembled according to the required expansion joint length to adapt to the needs of different scale projects. At the same time, the disassembled short-section tooling is more convenient for transportation and storage, solving the problem of inconvenient handling of long tooling, reducing logistics and storage costs, and making it more practical.

[0043] In optional implementations, such as Figure 1 and Figure 2 As shown, each segment block 21 is provided with ear pieces 213 on both sides to provide installation positions for the uprights 31. Construction personnel can select the installation position of the uprights 31 according to their needs. The lifting ring 212 is usually set on a segment block 21 located at the end or middle. The length of a single segment block 21 should be set between 20cm and 50cm.

[0044] Example 2 This embodiment provides a method for using a platform expansion joint pouring fixture, employing the platform expansion joint pouring fixture as described in Embodiment 1, including the following steps: Installation preparation: such as Figure 1 and Figure 3 As shown, first, insert the foam board 1 into the slot 211 at the bottom of the square steel 2, so that the two form a tight temporary assembly; as Figure 2 As shown, the assembly is then positioned and fixed by the limiting components 3 set on one or both sides of the foam board 1 to ensure that its installation position is accurate and its verticality meets the requirements.

[0045] Concrete pouring: The installed equipment is placed in the design position, and then the platform concrete is poured and vibrated. During this process, the rigid square steel 2 can effectively resist the lateral pressure and impact of the concrete, preventing the internal foam board 1 from shifting, deforming or floating.

[0046] Remove the tooling: When the concrete has initially set (has a certain strength but is not yet fully hardened), the operator will vertically remove the square steel 2 along with the limiting component 3 from the concrete by lifting it upwards. Since the adhesion between the foam board 1 and the concrete is much less than its embedding force with the slot 211 of the square steel 2, the foam board 1 is reliably embedded in the concrete.

[0047] Forming a groove: After the square steel 2 is removed, an expansion joint is left in the original position, which is filled at the bottom of the foam board 1 and has a regular empty groove at the top. Finally, the foam at the top of the reserved expansion joint is manually removed to form a groove with uniform depth and flat walls, which is ready for subsequent filling with asphalt rope and sealant.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A platform expansion joint pouring tool, characterized in that, It includes foam board (1), square steel (2) and limiting components (3). Foam board (1): Its thickness is adapted to the width of the expansion joint; Square steel (2): It is provided with a slot (211) whose thickness is adapted to the thickness of foam board (1), and the slot (211) is arranged along the length direction of the square steel (2); Limiting component (3): disposed on one or both sides of the foam board (1) and abutting against the side of the square steel (2).

2. The platform joint casting tooling of claim 1, wherein, The depth of the slot (211) is h, where 4cm≤h≤6cm.

3. The platform joint casting tooling of claim 1, wherein, The square steel (2) is provided with a lifting ring (212) at the top.

4. The platform joint casting tooling of claim 1, wherein, The limiting component (3) includes at least one upright rib (31), and the side of the square steel (2) is provided with an ear piece (213), and the ear piece (213) is provided with a limiting hole (2131) for installing the upright rib (31).

5. The platform joint casting tooling of claim 4, wherein, It also includes a fixing seat (4), which includes a limiting plate (41), a pin (42) at the bottom of the limiting plate (41), and a sleeve (43) for installing the vertical rib (31) at the top of the limiting plate (41).

6. The platform joint casting tooling of claim 4, wherein, The limiting component (3) includes two vertical ribs (31), which are symmetrically arranged on both sides of the square steel (2) in the width direction.

7. The platform joint casting tooling of claim 4, wherein, The number of the limiting components (3) is at least two, and the two limiting components (3) are respectively disposed on both sides of the length direction of the square steel (2).

8. The platform joint casting tooling of claim 1, wherein, The square steel (2) is a carbon steel structural component, and the two sides of the square steel (2) in the width direction are provided with chromium layer.

9. The platform joint pouring kit according to any one of claims 1-8, wherein, The square steel (2) includes several segment blocks (21), which are spliced ​​together in sequence, and adjacent segment blocks (21) are fixed together by a connecting plate (5).

10. The platform joint casting tooling of claim 9, wherein, The segment block (21) has threaded holes on both sides of its length direction, and the connecting plate (5) has connecting holes on both sides of its length direction that are adapted to the threaded holes. Each connecting hole is equipped with a fastening bolt (51).

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