A construction mold for cast-in-situ strip of laminated slab

Abstract

This utility model provides a construction mold for cast-in-place strips of composite slabs, specifically relating to the field of construction technology. It addresses the technical problems of existing molds being unsuitable for gaps of other sizes, having low reusability, and requiring the cutting of tie rods after formwork removal, which increases construction time and cost. The device includes a horizontal bar above the gap between two composite slabs and a hanging mold assembly below. Both ends of the horizontal bar are slidably fitted with sliding sleeves, and a vertical bar is fixed to the outer end of each sliding sleeve. The bottom of the vertical bar is connected to a support assembly for easy demolding. A tie rod is provided between the hanging mold assembly and the sliding sleeves, with both ends bolted to the sliding sleeves and the hanging mold assembly, respectively. An isolation sleeve is movably fitted around the tie rod. This device allows adjustment of the support assembly spacing via the sliding sleeves to adapt to gaps of different sizes. The isolation sleeves isolate the tie rod from the cast-in-place concrete, and the isolation sleeves also isolate the inverted truncated cone from the concrete.

Description

Technical Field

[0001] This utility model relates to the field of construction technology, and more specifically, to a construction mold for cast-in-place strips of composite slabs. Background Technology

[0002] The widespread application of prefabricated buildings has led to the extensive use of composite slabs as a key component. During construction, the gap between two composite slabs needs to be filled with concrete using suspended formwork, forming a cast-in-place strip to fill the gap. However, existing suspended formwork for composite slab cast-in-place strips presents several problems. First, each time the suspended formwork is used, a support frame needs to be erected above the gap to support the formwork. This process is not only time-consuming and labor-intensive, but the temporary support frame is also unsuitable for gaps of other sizes, resulting in low reuse rates. Furthermore, the vertical tie rods are typically welded to the horizontal reinforcing bars, and these tie rods remain permanently within the cast-in-place strip. Therefore, after removing the formwork, not only must the tie rods be cut, but additional processes such as grinding and rust prevention of the top slab are also required. This not only increases construction time and costs but also wastes a significant amount of material resources. Utility Model Content

[0003] The purpose of this utility model is to provide a construction mold for cast-in-place strips of composite slabs, which can effectively solve the technical problems in the prior art where temporary supports cannot be used for gaps of other sizes, have low reusability, and require cutting tie rods after the template is removed, which increases construction time and cost.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A construction mold for cast-in-place strips of composite slabs includes a horizontal bar located above the gap space between two composite slabs and a hanging mold assembly located below it. Both ends of the horizontal bar are slidably fitted with sliding sleeves. A vertical bar is fixedly connected to the outer end of each sliding sleeve. A support assembly for easy demolding is fixedly connected to the bottom of each vertical bar, and the support assembly is located above the composite slabs. A tie rod is provided between the hanging mold assembly and the sliding sleeves, and both ends of the tie rod are bolted to the sliding sleeves and the hanging mold assembly, respectively. An isolation sleeve is movably fitted around the tie rod.

[0006] In some embodiments, the support assembly includes an inverted frustum-shaped tube disposed below the vertical rod, the interior of which is provided with a fixing plate, and the vertical rod extends into the interior of the inverted frustum-shaped tube and is fixedly connected to the fixing plate.

[0007] In some embodiments, the sliding sleeve, vertical rod, fixing plate, and inverted truncated cone are integrally formed and fixedly connected.

[0008] In some embodiments, an isolation sleeve is movably sleeved on the outer conical surface of the inverted truncated cone, the top end of the isolation sleeve extends above the inverted truncated cone, and a limit rod is slidably provided through the portion of the isolation sleeve located above the inverted truncated cone. Two limit rods are provided and symmetrically arranged on the left and right sides of the inverted truncated cone.

[0009] In some embodiments, a through hole is vertically provided on the sliding sleeve, and two through holes are symmetrically arranged; a positioning plate is slidably arranged in the through hole, and the positioning plate is arranged between the inverted truncated cone and the pull rod, and the length of the positioning plate is greater than the total length of the vertical rod and the inverted truncated cone; a limit plate is fixed on the outer side of the top end of the positioning plate.

[0010] In some embodiments, the top surface of the crossbar is provided with a scale.

[0011] In some embodiments, the formwork assembly includes a template that abuts against the bottom end of the composite plate, a plurality of wooden blocks are arranged at equal intervals at the bottom end of the template, a base plate is provided at the bottom of the wooden blocks, and the two ends of the tie rod are respectively bolted to the sliding sleeve and the base plate.

[0012] In some embodiments, the bottom of the template and the top of the base plate are provided with mounting grooves that match the size of the timber.

[0013] In some embodiments, the top surface of the base plate is provided with two rows of grooves, which are respectively disposed below the composite plate, and a sealing strip is disposed inside the groove.

[0014] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0015] 1. This device uses sliding sleeves at both ends of the horizontal bar, with the outer end of the sleeves connecting the vertical bar and the support components. The spacing of the support components can be adjusted by sliding the sleeves to accommodate gaps of different sizes. This eliminates the need to rebuild the support frame each time based on the gap size, reducing setup time and manpower, improving the mold's adaptability to different laminated plate gaps, and allowing for reuse, thus increasing the reusability rate.

[0016] 2. In this device, the isolation sleeve isolates the tie rod from the cast-in-place concrete, and the isolation sleeve can isolate the inverted truncated cone from the concrete, avoiding direct contact between the tie rod or the inverted truncated cone and the concrete. When removing the formwork, the tie rod can be easily removed without cutting, grinding the top plate, or rust prevention treatment. It also eliminates the need for forceful pulling of the inverted truncated cone, thus reducing construction time and costs and avoiding excessive material waste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of a construction mold for cast-in-place strips of composite slabs provided in an embodiment of this utility model;

[0019] Figure 2 This is a top view of the crossbar, sliding sleeve, vertical bar, support assembly, and lifting formwork assembly provided in the embodiments of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the crossbar and sliding sleeve provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the inverted frustum cylinder provided in an embodiment of this utility model.

[0022] Icons: 1. Composite plate; 2. Horizontal bar; 3. Sliding sleeve; 4. Vertical bar; 5. Tie rod; 6. Isolation sleeve; 7. Inverted truncated cone tube; 8. Fixing plate; 9. Isolation sleeve; 10. Limiting rod; 11. Through hole; 12. Positioning plate; 13. Limiting plate; 14. Scale; 15. Template; 16. Timber; 17. Base plate; 18. Mounting groove; 19. Groove; 20. Sealing strip. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figures 1-2 As shown, the main body of this embodiment is a construction mold for cast-in-place strips of composite slabs, including a horizontal bar 2 located above the gap space between two composite slabs 1 and a hanging mold assembly below it; both ends of the horizontal bar 2 are slidably sleeved with sliding sleeves 3, and the outer end of each sliding sleeve 3 is fixedly connected to a vertical bar 4, and the bottom of the vertical bar 4 is fixedly connected to a support assembly for easy demolding, the support assembly being located above the composite slab 1; a tie rod 5 is provided between the hanging mold assembly and the sliding sleeves 3, and both ends of the tie rod 5 are bolted to the sliding sleeves 3 and the hanging mold assembly respectively; an isolation sleeve 6 is movably sleeved on the outside of the tie rod 5, the isolation sleeve 6 being made of PVC material.

[0029] Furthermore, the support assembly includes an inverted frustum cylinder 7 disposed below the vertical rod 4, and a fixing plate 8 is provided inside the inverted frustum cylinder 7. The vertical rod 4 extends into the interior of the inverted frustum cylinder 7 and is fixedly connected to the fixing plate 8.

[0030] Furthermore, the sliding sleeve 3, vertical rod 4, fixing plate 8, and inverted truncated cone 7 are integrally formed and fixedly connected.

[0031] Furthermore, an isolation sleeve 9 is movably sleeved on the outer conical surface of the inverted truncated cone 7. The isolation sleeve 9 is made of a PTFE film. The top end of the isolation sleeve 9 extends above the inverted truncated cone 7. A limit rod 10 is slidably provided through the part of the isolation sleeve 9 located above the inverted truncated cone 7. Two limit rods 10 are provided and symmetrically arranged on the left and right sides of the inverted truncated cone 7.

[0032] Furthermore, a through hole 11 is vertically provided on the sliding sleeve 3, and two through holes 11 are symmetrically arranged; a positioning plate 12 is slidably arranged in the through hole 11, and the positioning plate 12 is arranged between the inverted truncated cone cylinder 7 and the pull rod 5. The length of the positioning plate 12 is greater than the total length of the vertical rod 4 and the inverted truncated cone cylinder 7; a limit plate 13 is fixed to the outer side of the top end of the positioning plate 12.

[0033] Furthermore, a scale 14 is provided on the top surface of the crossbar 2.

[0034] Furthermore, the hanging formwork assembly includes a template 15 that abuts against the bottom end of the composite plate 1. Multiple wooden blocks 16 are arranged at equal intervals at the bottom end of the template 15. A base plate 17 is provided at the bottom of the wooden blocks 16. The two ends of the tie rod 5 are bolted to the sliding sleeve 3 and the base plate 17, respectively.

[0035] Furthermore, the bottom of the template 15 and the top of the base plate 17 are both provided with mounting grooves 18 that match the size of the timber 16.

[0036] Furthermore, the top surface of the base plate 17 is provided with two rows of grooves 19, which are respectively located below the composite plate 1, and a sealing strip 20 is provided inside the groove 19. The sealing strip 20 is made of EPDM rubber.

[0037] This device employs a sliding sleeve 3 at both ends of a horizontal bar 2. The outer end of the sliding sleeve 3 connects to a vertical bar 4 and a support assembly. The spacing of the support assembly can be adjusted by sliding the sliding sleeve 3 to accommodate gaps of different sizes. This eliminates the need to rebuild the support frame each time based on the gap size, reducing construction time and manpower, improving the mold's adaptability to different gaps in the composite slab 1, and allowing for reuse, thus increasing reusability. Furthermore, the support assembly at the bottom of the vertical bar 4 directly supports the composite slab 1, eliminating the need for an additional complex hanging mold support frame above the gap space. The inverted frustum cylinder 7 in the support assembly facilitates demolding, and the sliding sleeve 3, vertical bar 4, fixing plate 8, and inverted frustum cylinder 7 are integrally formed, resulting in a stable structure that allows for quick installation and disassembly, further improving construction efficiency. Secondly, the hanging mold assembly is connected to the sliding sleeve 3 via a tie rod 5, and the tie rod 5 is fitted with an isolation sleeve 6 between the sliding sleeve 3 and the hanging mold assembly. The isolation sleeve 6 isolates the tie rod 5 from the cast-in-place concrete, and the isolation sleeve 9 isolates the inverted truncated cone 7 from the concrete, preventing the tie rod 5 or the inverted truncated cone 7 from direct contact with the concrete. When removing the formwork 15, the tie rod 5 can be easily removed without cutting, grinding the top plate, or performing rust prevention treatment. It also eliminates the need for forcefully pulling out the inverted truncated cone 7, thus reducing construction time and costs and avoiding excessive material waste (only the material loss of the isolation sleeve 6 and the isolation sleeve 9).

[0038] The specific working process of this device is as follows:

[0039] Before construction, inspect all components of the mold for damage, including the horizontal bar 2, sliding sleeve 3, vertical bar 4, support assembly, lifting mold assembly, tie rod 5, and isolation sleeve 6. Ensure that all connections are undamaged and that bolts and other fasteners are functioning properly. Then, place the horizontal bar 2, sliding sleeve 3, vertical bar 4, and support assembly on top of the composite plate 1, with the horizontal bar 2 and sliding sleeve 3 positioned above the gap between the two composite plates 1. Based on the dimensions of the gap between the two composite plates 1, adjust the position of the sliding sleeve 3 on the horizontal bar 2 using the scale 14 on the top surface of the horizontal bar 2, and then position it using the positioning plate 12. This ensures that the support assembly and lifting mold assembly on both sides accurately align with the gap position.

[0040] Next, the device is installed. First, the formwork assembly is placed below the gap between the two composite slabs 1, with the template 15 abutting against the bottom of the composite slab 1, ensuring that the template 15 completely covers the bottom of the gap. Then, one end of the tie rod 5 is bolted to the base plate 17 of the formwork assembly. An isolation sleeve 6 is fitted onto the part of the tie rod 5 located between the sliding sleeve 3 and the formwork assembly. The other end of the tie rod 5 is then bolted through the gap to the sliding sleeve 3. During the connection process, it is ensured that the tie rod 5 is firmly connected, and that the isolation sleeve 6 effectively isolates the tie rod 5 from the subsequently poured concrete. At this time, the inverted truncated cone 7 (with the isolation sleeve 9) at the bottom of the vertical rod 4 is tightly abutting against the top of the composite slab 1, and the template 15 is tightly abutting against the bottom of the composite slab 1, keeping the entire device stable. Then, the positioning plate 12 is removed.

[0041] It is worth mentioning that the bottom end of the isolation sleeve 6 is slidably inserted under the template 15 to prevent concrete from entering the interior of the isolation sleeve 6.

[0042] After installation, concrete can be poured into the gap between the two composite slabs 1 until the cast-in-place strip is filled and extends to a certain height. During the pouring process, carefully observe the stress on the mold to ensure that the device does not shift or deform due to the pressure of the concrete.

[0043] After the concrete has hardened to a certain strength, the demolding operation begins. Loosen the bolts at both ends of the tie rod 5 and remove the tie rod 5 from the sliding sleeve 3 and the base plate 17 of the lifting formwork assembly. Due to the presence of the isolation sleeve 6, the tie rod 5 will not stick to the concrete and can be easily removed. Next, slide the sliding sleeve 3 to separate the support assembly from the composite plate 1, and then remove the lifting formwork assembly from below the gap. The shape and structure design of the inverted truncated cone 7 facilitates the smooth demolding of the support assembly.

[0044] Finally, clean and inspect all disassembled parts, and properly store reusable parts for reuse in the next construction project.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A construction mold for cast-in-place strips of composite slabs, characterized in that, It includes a horizontal bar (2) located above the gap space between two composite plates (1) and a lifting mold assembly located below it; both ends of the horizontal bar (2) are slidably sleeved with a sliding sleeve (3), and the outer end of each sliding sleeve (3) is fixedly connected with a vertical bar (4), and the bottom of the vertical bar (4) is fixedly connected with a support assembly for easy demolding, and the support assembly is located above the composite plate (1); a tie rod (5) is provided between the lifting mold assembly and the sliding sleeve (3), and both ends of the tie rod (5) are bolted to the sliding sleeve (3) and the lifting mold assembly respectively; an isolation sleeve (6) is movably sleeved on the outside of the tie rod (5).

2. The construction mold for cast-in-place strips of composite slabs according to claim 1, characterized in that, The support assembly includes an inverted frustum cylinder (7) disposed below the vertical rod (4), and a fixing plate (8) is provided inside the inverted frustum cylinder (7). The vertical rod (4) extends into the interior of the inverted frustum cylinder (7) and is fixedly connected to the fixing plate (8).

3. The construction mold for cast-in-place strips of composite slabs according to claim 2, characterized in that, The sliding sleeve (3), vertical rod (4), fixing plate (8) and inverted truncated cone (7) are integrally formed and fixedly connected.

4. The construction mold for cast-in-place strips of composite slabs according to claim 3, characterized in that, An isolation sleeve (9) is movably sleeved on the outside of the conical surface of the inverted truncated cone (7). The top end of the isolation sleeve (9) extends above the inverted truncated cone (7). A limit rod (10) is slidably provided through the part of the isolation sleeve (9) located above the inverted truncated cone (7). There are two limit rods (10) and they are symmetrically arranged on the left and right sides of the inverted truncated cone (7).

5. The construction mold for cast-in-place strips of composite slabs according to claim 2, characterized in that, A through hole (11) is vertically provided on the sliding sleeve (3), and two through holes (11) are symmetrically arranged; a positioning plate (12) is slidably arranged in the through hole (11), and the positioning plate (12) is arranged between the inverted truncated cone (7) and the pull rod (5). The length of the positioning plate (12) is greater than the total length of the vertical rod (4) and the inverted truncated cone (7); a limit plate (13) is fixed on the outer side of the top of the positioning plate (12).

6. The construction mold for cast-in-place strips of composite slabs according to claim 1, characterized in that, The top surface of the crossbar (2) is provided with a scale (14).

7. The construction mold for cast-in-place strips of composite slabs according to claim 1, characterized in that, The hanging formwork assembly includes a template (15) that abuts against the bottom end of the composite plate (1). Multiple wooden blocks (16) are arranged at equal intervals at the bottom end of the template (15). A base plate (17) is provided at the bottom of the wooden blocks (16). The two ends of the tie rod (5) are bolted to the sliding sleeve (3) and the base plate (17) respectively.

8. The construction mold for cast-in-place strips of composite slabs according to claim 7, characterized in that, The bottom of the template (15) and the top of the base plate (17) are provided with mounting grooves (18) that match the size of the timber (16) at equal intervals.

9. A construction mold for cast-in-place strips of composite slabs according to claim 7, characterized in that, The bottom plate (17) has two rows of grooves (19) on its top surface. The grooves (19) are respectively located below the composite plate (1). A sealing strip (20) is provided inside the grooves (19).

Images