Reserved hole combined type mold with clamping and positioning functions and construction method of reserved hole combined type mold

Abstract

The invention provides a reserved hole combined mold with clamping and positioning functions and a construction method thereof. The reserved hole combined mold comprises a clamp, a hinge part is arranged at one end of the clamp and used for achieving rotation or angle adjustment of the clamp, and an opening and closing part is arranged at the other end of the clamp and used for closing and opening to clamp or release a water stop steel plate; each template unit comprises an upper template and a lower template, the upper template is arranged at the upper end of the clamp, the lower template is arranged at the lower end of the clamp, and the hinge part is hinged to the lower template; the template units are clamped with one another to form a closed template block frame; the adjustable inner supporting rods are arranged between the two opposite formwork units and used for supporting the formwork units. According to the method, the problem that the new and old concrete combination surface effect is poor after a traditional formwork is completed is solved, combination of the new and old concrete is better facilitated, and a better anti-seepage effect is achieved after pouring of a post-pouring hole is completed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a reserved hole combined mold with a clamping and positioning function and a construction method thereof. Background Art

[0002] At present, high-rise residential buildings mostly use aluminum formwork construction technology. In order to facilitate the up and down transmission of aluminum formwork and floor measurement and layout, standard floor slabs will reserve material transfer ports and layout holes. The molds for the reserved holes are mostly wooden molds nailed on site, or integrated molds welded with steel plates. The location where the material transfer port and the layout hole are set is a floor slab without waterproofing requirements, and there is no waterproofing method in the later stage. When the material transfer port and the layout hole are blocked and poured, water seepage is very likely to occur due to the lack of vibration of concrete, poor workability, and ineffective treatment of the contact surface between the new and old concrete. Concrete floor slabs are mostly single-layer reinforced steel floor slabs, which are difficult to position and embed water-stop steel plates in advance during the steel bar binding stage, which is not conducive to the waterproofing of the post-pouring position. Summary of the invention

[0003] The purpose of the present invention is to provide a pre-reserved hole combined mold with a clamping and positioning function and a construction method thereof in view of the deficiencies of the prior art.

[0004] The specific technical solutions are as follows:

[0005] A pre-reserved hole combined mold with a clamping and positioning function, comprising:

[0006] A clamp, wherein one end of the clamp is provided with a hinged portion for realizing rotation or angle adjustment of the clamp, and the other end is provided with an opening and closing portion for closing and opening to clamp or release the water-stop steel plate;

[0007] At least four template units, each template unit includes an upper template and a lower template, the upper template is arranged at the upper end of the clamp, the lower template is arranged at the lower end of the clamp, and the hinged portion is hinged to the lower template; the template units are mutually clamped to form a closed template block frame; and

[0008] The adjustable inner support rod is arranged between two opposite template units and is used for supporting the template units.

[0009] Optionally, each of the template units is mutually engaged with a card slot of an adjacent template unit via a card block.

[0010] Optionally, the upper template and the lower template are both provided with extension ends extending into the interior of the clamp. When the opening and closing portion is closed, the extension ends are used to respectively abut against the upper and lower surfaces of the waterstop steel plate, so that the waterstop steel plate is firmly clamped between the template block and the clamp.

[0011] Optionally, the upper template and the lower template are both provided with extension ends extending into the interior of the clamp. When the opening and closing portion is closed, the extension ends are used to respectively abut against the upper and lower surfaces of the waterstop steel plate, so that the waterstop steel plate is firmly clamped between the template block and the clamp.

[0012] Optionally, the adjustable inner support rod includes a sleeve and a threaded rod, the threaded rod is provided with an internal thread, the threaded rod matches the internal thread of the sleeve, and a linear movement relative to the sleeve is achieved by a screwing motion, thereby adjusting the total length of the adjustable inner support rod.

[0013] Optionally, a ring handle is provided on the top of the template unit to facilitate manual carrying and installation of the template.

[0014] Optionally, the clamp is an arc-shaped cylindrical structure, which is welded integrally with the formwork unit, and is used to accommodate and fix the water-stop steel plate, and form an E-shaped groove after the concrete solidifies.

[0015] A construction method of a pre-reserved hole combined mold with a clamping and positioning function comprises the following steps:

[0016] Step 1: Select corresponding template units for combination according to the size of the reserved opening;

[0017] Step 2: First, splice the lower templates between adjacent template units, place the water-stop steel plate in the fixture, and then weld and fix it, then flip the upper template so that the opening and closing part is closed to clamp the water-stop steel plate, and then splice the upper templates between adjacent template units;

[0018] Step 3: Adjust the adjustable inner support rod to support the two opposite template units to ensure the stability of the mold;

[0019] Step 4: Before pouring concrete, place the mold in the designated location;

[0020] Step 5: After the concrete solidifies, remove the adjustable inner support rods one by one, and reverse the upper and lower formwork to disassemble and complete the mold removal.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention realizes the free combination of reserved holes of different sizes by designing template units of different lengths. Whether it is a small wire-laying hole or a large-scale material transfer hole, the most suitable template configuration can be found; this modular concept not only covers a wide range of application scenarios, but also provides great flexibility and creativity for the construction team; the detachable and reusable characteristics of the mold unit greatly reduce the consumption of new materials, which is in line with the currently advocated circular economy principle; while reducing construction costs, it also reduces the pressure on natural resources and demonstrates the sustainable development vision of the construction industry;

[0023] 2. Through the ingenious integration of the template and the fixture, the present invention successfully solves the problem of positioning the water-stop steel plate that has long troubled the construction industry, not only ensuring the tightness of the waterproof structure, but also laying a solid physical foundation for the comprehensive improvement of the anti-seepage performance of the floor slab; the formation of the E-shaped groove indicates that the close combination of the new and old interfaces after concrete pouring has reached an unprecedented level. This new structure not only strengthens the waterproof effect, but also provides convenience for subsequent maintenance and repair, significantly extending the service life of building facilities;

[0024] 3. The arc-shaped groove left by the cylindrical clamp of the present invention creates the best bonding condition between the newly poured concrete and the original structure, minimizes the possibility of leakage, and improves the reliability of the overall structure; by improving the waterproof performance of concrete, the present invention indirectly reduces the resource consumption required for future maintenance, echoes the concept of green construction, and contributes to the construction of an eco-friendly urban environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the working state of the reserved hole combined mold with clamping and positioning function;

[0026] Figure 2 It is a schematic diagram of the overall structure of the clamping state of the template unit;

[0027] Figure 3 It is a schematic diagram of the overall structure of the template unit in the demolding state;

[0028] Figure 4 It is a structural diagram of a buckle and a slot;

[0029] Figure 5 It is a schematic diagram of the structure of the adjustable inner support rod;

[0030] Figure 6 It is a side view structural schematic diagram of the working state of the template unit;

[0031] Figure 7 It is a schematic diagram of the structure of the short template unit;

[0032] Figure 8 Schematic diagram of the structure of the long template unit.

[0033] Fig. 9 Complete the effect section drawing for the reserved opening;

[0034] Fig.10 Complete the top view of the reserved hole;

[0035] In the figure: 1. Clamp; 11. Hinge; 12. Opening and closing part; 2. Template unit; 21. Upper template; 22. Lower template; 23. Block; 24. Slot; 25. Extended end; 26. Protruding support point; 27. Ring handle; 3. Adjustable inner support rod; 30. Snap-in groove; 31. Sleeve; 32. Threaded rod; 4. Waterstop steel plate. DETAILED DESCRIPTION

[0036] 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 of the present invention. 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 creative work are within the scope of protection of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0039] The present invention provides a pre-reserved hole combined mold with a clamping and positioning function, referring to Figure 1-Figure 3 ,include:

[0040] A clamp 1, one end of which is provided with a hinged portion 11 for realizing rotation or angle adjustment of the clamp 1, and the other end of which is provided with an opening and closing portion 12 for closing and opening to clamp or release the water-stop steel plate 4;

[0041] At least four template units 2, each template unit 2 includes an upper template 21 and a lower template 22, the upper template 21 is arranged at the upper end of the clamp 1, the lower template 22 is arranged at the lower end of the clamp 1, and the hinge part 11 is hinged on the lower template 22; the template units 2 are mutually clamped to form a closed template block frame; and

[0042] The adjustable inner support rod 3 is disposed between two opposite template units 2 and is used for supporting the template units 2 .

[0043] Specifically, in this embodiment, the hinged portion 11 of the clamp 1 is realized by a pin or a similar structure, allowing the clamp 1 to rotate or adjust the angle within a certain range to adapt to the special needs of the water-stop steel plate 4 of different thicknesses and the reserved openings. The opening and closing portion 12 is automatically opened and closed by the rotation of the hinged portion 11, and is used to clamp or release the water-stop steel plate 4 placed in the mold. The opening and closing portion 12 is preferably wrapped with a soft material to protect the surface of the water-stop steel plate 4 from damage. Among them, there are at least four template units 2, and each template unit 2 is subdivided into two parts, an upper template 21 and a lower template 22. The upper template 21 is located above the clamp 1 and is fixedly connected to it; the lower template 22 is located below the clamp 1 and is also fixedly connected. It is worth noting that the hinged portion 11 is directly hinged to the lower template 22, ensuring the stability and flexibility of the clamp 1. The template units 2 are connected by a snap-on method to form a closed and detachable template block frame, which is suitable for reserved openings of different sizes and shapes. In order to enhance the overall stability and compression resistance of the template block frame, an adjustable inner support rod 3 is introduced. The support rod is set between two relative template units 2, and its length can be adjusted to adapt to the reserved holes of different widths, and the support rod body is made of high-strength material. In practical applications, firstly, a suitable combination of template units 2 is selected according to the size of the reserved hole, and the mold frame is quickly built through the clamping mechanism. Subsequently, the multi-directional water-stop steel plate 4 is placed on the corresponding mold, and the opening and closing part 12 of the clamp 1 is used to clamp it firmly. At this time, the fit between the mold and the water-stop steel plate 4 can be optimized by adjusting the angle of the hinge 11. Finally, the inner support rod is adjusted according to the actual span of the reserved hole to ensure the firmness and reliability of the overall structure of the mold. After completing the above preparation process, concrete pouring can be started. The existence of the mold not only ensures the precise forming of the reserved hole, but also the built-in water-stop steel plate 4 naturally becomes a part of the floor after pouring, which significantly improves the waterproof performance of the floor.

[0044] In this embodiment, refer to Figure 2 , Figure 4 Each template unit 2 is connected to the card slot 24 of the adjacent template unit 2 through a card block 23, wherein the card slot 24 is a U-shaped card slot 24, a template unit 2 is provided with a U-shaped card slot 24, and the edges of the adjacent template units 2 on both sides are provided with card blocks 23 adapted to the U-shaped card slot 24, and the protruding parts of the card blocks 23 are wedge-shaped. When the adjacent template units 2 are docked, the card block 23 on one side will be accurately embedded in the card slot 24 on the other side, forming a physical bite, thereby establishing a modular splicing effect.

[0045] In this embodiment, refer to Figure 2 , Figure 3, the upper formwork 21 and the lower formwork 22 are both provided with an extension end 25 extending into the interior of the fixture 1. The extension end 25 is preferably made of high-strength alloy material, which can not only withstand the pressure during the concrete pouring process, but also ensure that it will not cause damage when in contact with the water-stop steel plate 4; the length, width and height of the extension end 25 are precisely calculated to ensure that the upper and lower surfaces of the water-stop steel plate 4 can be properly covered when the mold is closed, but not too long to cause inconvenience in mold operation or structural instability; when the opening and closing part 12 is closed, the extension end 25 is used to abut against the upper and lower surfaces of the water-stop steel plate 4, respectively, so as to firmly fix the position of the water-stop steel plate 4 in three-dimensional space, ensuring that it will not shift or deform during the subsequent concrete pouring process. The design of the extension end 25 is not only to solve the positioning problem of the water-stop steel plate 4, but it can also indirectly improve the structural rigidity of the entire template block frame through close cooperation with the fixture 1, and reduce the risk of deformation caused by external loads (such as concrete weight).

[0046] Reference Figure 2 The relative inner side of the template unit 2 is provided with a protruding support point 26 for positioning the adjustable inner support rod 3, and both ends of the adjustable inner support rod 3 are provided with a snap-in groove 30 adapted to the protruding support point 26. The groove structure not only limits the placement position of the inner support rod, but also ensures that the inner support rod can be firmly fixed on the template unit 2 when subjected to external force, thereby effectively dispersing and transmitting the force.

[0047] In this embodiment, refer to Figure 5 The adjustable inner support rod 3 includes a sleeve 31 and a threaded rod 32. The threaded rod 32 is provided with an inner thread. The threaded rod 32 matches the inner thread of the sleeve 31. The threaded rod 32 can move linearly relative to the sleeve 31 by screwing, thereby adjusting the total length of the adjustable inner support rod 3. When the threaded rod 32 rotates under the action of an external force, the friction between the outer thread and the inner thread of the sleeve 31 is converted into an axial thrust, which causes the threaded rod 32 to move along the axis of the sleeve 31. If the screwing direction is clockwise, the threaded rod 32 will gradually extend out of the sleeve 31, thereby extending the length of the entire inner support rod; conversely, counterclockwise rotation will cause the threaded rod 32 to retract into the sleeve 31, shortening the total length of the inner support rod.

[0048] In this embodiment, refer to Figure 6, a ring handle 27 is provided on the top of the template unit 2 to facilitate manual handling and installation of the template. The ring handle 27 is preferably made of lightweight and high-strength metal materials, such as aluminum alloy or stainless steel, to ensure that the handle is strong enough while reducing the overall weight to avoid burdening the hands due to long-term carrying. The handle is in the shape of a ring, and its inner diameter is designed to be just suitable for an adult's palm to grasp. The outer diameter must take into account both aesthetics and functionality, and should not be too large to affect the comfort of finger bending during carrying. The connection between the ring handle 27 and the template unit 2 should be thickened to increase the load-bearing capacity and prevent breakage. In addition, in order to enhance the friction during gripping and avoid slipping in sweaty hands or slippery environments, the surface of the ring handle 27 can be frosted or rubber coated. This not only improves the feel, but also plays a certain buffering role to protect fingers from accidental impact injuries.

[0049] Reference Figure 2-3 The fixture 1 is an arc-shaped cylindrical structure. The main body of the fixture 1 is made of high-strength, corrosion-resistant steel and is welded integrally with the template unit 2. The inner cavity of the arc-shaped cylindrical fixture 1 just forms a accommodating space suitable for the water-stop steel plate 4. After the template unit 2 is assembled and before the concrete is poured, the water-stop steel plate 4 will be accurately placed in the center of the fixture 1. At this time, the extension ends 25 at the top and bottom of the template unit 2 will be respectively attached to the two sides of the water-stop steel plate 4, and it will be firmly fixed by a strong extrusion force. This design ensures that the position of the water-stop steel plate 4 will not shift during the hardening process of the concrete, laying a solid foundation for the subsequent waterproof performance. When the concrete is completely solidified and the mold is removed, a clear E-shaped groove will be left in the space originally enclosed by the arc-shaped cylindrical fixture 1. This groove constitutes a multi-layer composite waterproof barrier. On the one hand, it can effectively block the water penetration path, and on the other hand, it also provides a convenient channel for later maintenance, which is convenient for regular inspection and repair of the waterproof layer to ensure that the building maintains a good waterproof state for a long time.

[0050] The construction method of the pre-reserved hole combined mold with clamping and positioning function provided by the present invention is as follows: Figure 6-Figure 10 , including the following steps:

[0051] Step 1: First, select the appropriate component from the preset template units 2 of different models according to the actual size requirements of the reserved hole. For example, for a smaller wire-laying hole, only four short template blocks may be needed to form a square or rectangular layout; while for a larger material transfer hole, a combination of long template blocks and short template blocks may be used to form a more complex or non-standard shape;

[0052] Step 2: Starting from the lower template 22, use the special buckle and slot 24 to fix the adjacent template units 2 one by one; then accurately put the water-stop steel plate 4 into the fixture 1, and use the arc-shaped cylindrical structure of the fixture 1 for initial positioning, and then use welding or other fixing means to firmly lock the water-stop steel plate 4 in the predetermined position to prevent displacement during the subsequent construction process; gently turn over and dock the upper template 21, so that the opening and closing part 12 closes smoothly and clamps the fixed water-stop steel plate 4, and use the buckle and slot 24 again to firmly connect the adjacent upper templates 21. At this point, the mold body is assembled;

[0053] Step 3: According to the size of the reserved hole and the predicted amount of concrete pouring, the position of the rotating threaded rod 32 in the sleeve 31 is adjusted appropriately to adjust the length of the adjustable inner support rod 3 to ensure that it can stably support the template units 2 on both sides to enhance the rigidity and stability of the overall mold;

[0054] Step 4: Before pouring concrete, place the mold in the designated location, confirm that the mold is stable, and then start pouring concrete as planned;

[0055] Step 5: After the concrete solidifies, first release the support function of the adjustable inner support rod 3, then gradually remove the snap connections, and gently separate the upper and lower templates 22. During the entire process, the movements should be gentle to avoid damaging the finished concrete surface, and the mold is removed; collect all disassembled mold components, clean and inspect them, and after confirming that there is no damage, properly store them or prepare for the next use.

[0056] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A pre-reserved hole combined mold with clamping and positioning function, characterized in that: include: A clamp, wherein one end of the clamp is provided with a hinged portion for realizing rotation or angle adjustment of the clamp, and the other end is provided with an opening and closing portion for closing and opening to clamp or release the water-stop steel plate; At least four template units, each template unit includes an upper template and a lower template, the upper template is arranged at the upper end of the clamp, the lower template is arranged at the lower end of the clamp, and the hinged portion is hinged to the lower template; the template units are mutually clamped to form a closed template block frame; and The adjustable inner support rod is arranged between two opposite template units and is used for supporting the template units.

2. The pre-reserved hole combined mold with clamping and positioning function according to claim 1 is characterized in that: Each of the template units is mutually engaged with the engagement grooves of adjacent template units via an engagement block.

3. The pre-reserved hole combined mold with clamping and positioning function according to claim 1 is characterized in that: The upper template and the lower template are both provided with extension ends extending into the interior of the clamp. When the opening and closing portion is closed, the extension ends are used to abut against the upper and lower surfaces of the waterstop steel plate respectively, so that the waterstop steel plate is firmly clamped between the template block and the clamp.

4. The pre-reserved hole combined mold with clamping and positioning function according to claim 1 is characterized in that: The relative inner side of the template unit is provided with a protruding support point for positioning the adjustable inner support rod, and both ends of the adjustable inner support rod are provided with a clamping groove adapted to the protruding support point.

5. The pre-reserved hole combined mold with clamping and positioning function according to claim 1 is characterized in that: The adjustable inner support rod includes a sleeve and a threaded rod. The threaded rod is provided with an internal thread. The threaded rod matches the internal thread of the sleeve. The threaded rod can move linearly relative to the sleeve through a screwing motion, thereby adjusting the total length of the adjustable inner support rod.

6. The pre-reserved hole combined mold with clamping and positioning function according to claim 1, characterized in that: A circular handle is provided on the top of the template unit to facilitate manual transportation and installation of the template.

7. The pre-reserved hole combined mold with clamping and positioning function according to claim 1, characterized in that: The clamp is an arc-shaped cylindrical structure, which is integrally welded with the formwork unit and is used to accommodate and fix the water-stop steel plate and form an E-shaped groove after the concrete solidifies.

8. The construction method of the pre-reserved hole combined mold with clamping and positioning function according to any of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Select corresponding template units for combination according to the size of the reserved opening; Step 2: First, splice the lower templates between adjacent template units, place the water-stop steel plate in the fixture, and then weld and fix it, then flip the upper template so that the opening and closing part is closed to clamp the water-stop steel plate, and then splice the upper templates between adjacent template units; Step 3: Adjust the adjustable inner support rod to support the two opposite template units to ensure the stability of the mold; Step 4: Before pouring concrete, place the mold in the designated location; Step 5: After the concrete solidifies, remove the adjustable inner support rods one by one, and reverse the upper and lower formwork to disassemble and complete the mold removal.

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