Floor reserved hole steel sleeve fixing device and construction method

Abstract

The invention provides a floor reserved hole steel sleeve fixing device and a construction method.The fixing device is used for fixing a steel sleeve to a formwork and comprises a first fixing plate, a locking device and a positioning device, the first fixing plate is arranged at the end, away from the formwork, of the steel sleeve, and the locking device is arranged at the end, away from the formwork, of the steel sleeve; the locking device penetrates through the first fixing plate, the steel sleeve and the formwork to fasten the steel sleeve between the first fixing plate and the formwork, the positioning device is arranged on the locking device in a sleeving mode, one side of the positioning device is attached to the formwork, and the end, away from the locking device, of the positioning device abuts against the inner wall of the steel sleeve. The device has the beneficial effects that the steel sleeve is fixed on the formwork, disturbance of external construction loads can be better resisted, the stability of the steel sleeve is improved, the integrity and the self-waterproof performance of a floor slab are guaranteed, the structure is simple, operation is convenient and fast, the construction efficiency is improved, recycling can be achieved, and the construction cost is saved.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and in particular relates to a steel sleeve fixing device and construction method for reserved openings in floor slabs. Background Technology

[0002] In building construction, due to the broad scope of mechanical and electrical engineering, various professional pipelines need to be installed and laid through the floor slab structure. To ensure convenient maintenance and repair of these pipelines, and to ensure that the waterproofing performance of the floor slab meets the specifications, steel sleeve openings are usually installed where the pipelines pass through the concrete floor slab. Since there are numerous steel sleeves embedded in the concrete structure, their installation quality directly affects the integrity and safety of the floor slab structure.

[0003] In existing technologies, the most common fixing method involves using two steel wires of equal length, perpendicular to each other, intertwined to form a cross shape, and then covering the top of the steel sleeve, ensuring that the intersection of the wires coincides with the center of the top surface of the steel sleeve. The four protruding wires are bent downwards along the outer wall of the steel sleeve, and the ends are fixed to the formwork with steel nails. This fixing method lacks stability and overturning resistance, is highly susceptible to displacement due to external forces, and the steel wires and nails embedded in the floor slab concrete can damage the integrity of the floor slab concrete structure. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a steel sleeve fixing device and construction method for reserved openings in floor slabs, which effectively solves the technical problems of poor stability of steel sleeves in reserved openings in floor slabs and easy damage to the integrity of the concrete structure of the floor slab by the fixing method, and overcomes the shortcomings of the prior art.

[0005] The technical solution adopted in this invention is: a steel sleeve fixing device for pre-reserved openings in floor slabs, used to fix the steel sleeve to the formwork, comprising,

[0006] The first fixing plate is disposed at the end of the steel sleeve away from the template.

[0007] A locking device passes through the first fixing plate, the steel sleeve, and the template to fasten the steel sleeve between the first fixing plate and the template;

[0008] A positioning device is sleeved on the locking device, with one side fitting against the template, and the end of the positioning device away from the locking device abutting against the inner wall of the steel sleeve.

[0009] Furthermore, it also includes a second fixing plate, which is disposed on the side of the template away from the steel sleeve, and the second fixing plate passes through the locking device.

[0010] Furthermore, the areas of both the first fixing plate and the second fixing plate are larger than the diameter of the steel sleeve.

[0011] Furthermore, the locking device includes a locking screw that passes through the first fixing plate, the steel sleeve, the positioning device, the template, and the second fixing plate.

[0012] Furthermore, the locking screw is provided with locking buckles at both ends.

[0013] Furthermore, the positioning device includes a connecting block, which is sleeved on the outside of the locking screw and can move up and down along the locking screw.

[0014] Furthermore, the connecting block is provided with a threaded hole, which is adapted to the locking screw.

[0015] Furthermore, the connecting block is provided with a plurality of positioning rods, which are arranged circumferentially along the connecting block, and the end of the positioning rod away from the connecting block abuts against the inner wall of the steel sleeve.

[0016] Furthermore, the positioning rods are evenly distributed along the circumference of the connecting block.

[0017] This invention provides a construction method for using a steel sleeve fixing device for a pre-reserved opening in a floor slab as described above, comprising the following steps:

[0018] A hole is made on the template at the position corresponding to the center of the steel sleeve;

[0019] The positioning device is fitted onto the locking device;

[0020] Pass the locking device through the hole so that the positioning device fits against the template;

[0021] The steel sleeve is fitted over the outside of the positioning device, so that the end of the positioning device away from the locking device abuts against the inner wall of the steel sleeve;

[0022] The first fixing plate is installed at the end of the steel sleeve away from the template, and the first fixing plate is sleeved on the locking device;

[0023] The locking device is used to fasten the steel sleeve between the first fixing plate and the template.

[0024] The advantages and positive effects of this invention are as follows: By adopting the above technical solution, the steel sleeve is fixed on the template, and the lateral and vertical displacement of the steel sleeve is restricted, which can better resist the disturbance of external construction loads, improve the stability of the steel sleeve, and obtain good anti-overturning performance. There is no need to set fixed points in the concrete floor slab, which does not damage the concrete floor slab structure, ensures the integrity of the floor slab and its self-waterproof performance, has a simple structure, is easy to operate, improves construction efficiency, can be recycled, and saves construction costs. Attached Figure Description

[0025] The above and other objects, features, and advantages of the present invention will become more apparent from the more detailed description of the embodiments of the invention in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same parts or steps.

[0026] Figure 1 This is a schematic diagram of the overall installation of a steel sleeve fixing device for a reserved opening in a floor slab according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the first fixing plate of a steel sleeve fixing device for a reserved opening in a floor slab according to an embodiment of the present invention.

[0028] Figure 3 This is a top view of a positioning device for fixing steel sleeves for reserved openings in floor slabs, according to an embodiment of the present invention.

[0029] In the picture:

[0030] 1. Steel sleeve 2. Template 3. First fixing plate

[0031] 4. Second fixing plate; 5. Locking screw; 6. Locking buckle

[0032] 7. Connecting block 8. Positioning rod Detailed Implementation

[0033] This invention provides a steel sleeve fixing device and construction method for reserved openings in floor slabs. The embodiments of this invention will be described below with reference to the accompanying drawings.

[0034] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention 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 the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0035] like Figure 1As shown in the figure, an embodiment of the present invention provides a steel sleeve fixing device for pre-reserved openings in floor slabs. This device vertically fixes the steel sleeve 1 to the formwork 2, allowing for pre-reserved openings during concrete slab pouring to facilitate the connection of various electromechanical pipelines. The fixing device includes a first fixing plate 3, a locking device, and a positioning device. The first fixing plate 3 is located at the end of the steel sleeve 1 furthest from the formwork 2. The locking device passes through the first fixing plate 3, the steel sleeve 1, and the formwork 2, securing the steel sleeve 1 between the first fixing plate 3 and the formwork 2. The positioning device is fitted onto the locking device, with one side fitting against the formwork 2, and the end of the positioning device furthest from the locking device abutting against the inner wall of the steel sleeve 1. By setting the locking device and the positioning device, the steel sleeve 1 is fixed and positioned, effectively preventing external forces from causing displacement of the steel sleeve 1 and improving its stability.

[0036] Preferably, to further enhance the locking effect of the locking device, a second fixing plate 4 is provided on the side of the template 2 away from the steel sleeve 1. The second fixing plate 4 passes through the locking device and fits against the side of the template 2 away from the steel sleeve 1.

[0037] Specifically, such as Figure 2 As shown, the areas of both the first fixing plate 3 and the second fixing plate 4 are larger than the diameter of the steel sleeve 1, meaning that both the first fixing plate 3 and the second fixing plate 4 can cover the diameter of the steel sleeve 1. The shapes of the first fixing plate 3 and the second fixing plate 4 are not limited; they can be circular or quadrilateral. A through hole is provided in the center of the first fixing plate 3 and the second fixing plate 4 for inserting a locking device. By setting the first fixing plate 3 and the second fixing plate 4, the steel sleeve 1 is vertically positioned, preventing vertical displacement of the steel sleeve 1.

[0038] Specifically, the locking device includes a locking screw 5, which passes through the first fixing plate 3, the steel sleeve 1, the positioning device, the template 2, and the second fixing plate 4. Locking buckles 6 are provided at both ends of the locking screw 5, and these buckles 6 are respectively tightened onto the side of the first fixing plate 3 and the second fixing plate 4 away from the steel sleeve 1. Through the locking screw 5 and the locking buckles 6, the first fixing plate 3 and the second fixing plate 4 are detachably connected to the steel sleeve 1 and the template 2. After the concrete slab is poured, the locking device, as well as the first fixing plate 3 and the second fixing plate 4, can be removed and reused.

[0039] Specifically, such as Figure 3 As shown, the positioning device includes a connecting block 7, which is sleeved on the outside of the locking screw 5 and can move up and down along the locking screw 5. The connecting block 7 is provided with a threaded hole that is adapted to the locking screw 5. Preferably, the connecting block 7 is a nut that is adapted to the locking screw 5. By rotating the nut, the nut can move along the locking screw 5.

[0040] Specifically, multiple positioning rods 8 are fixed on the connecting block 7. The positioning rods 8 are arranged circumferentially along the connecting block 7, and the end of the positioning rod 8 away from the connecting block 7 abuts against the inner wall of the steel sleeve 1. When there is external interference on the steel sleeve 1, the positioning rod 8 can abut against the inner wall of the steel sleeve 1 to prevent the steel sleeve 1 from shifting. Preferably, the positioning rods 8 are evenly distributed circumferentially along the connecting block 7. By setting the positioning rods 8, the steel sleeve 1 is laterally positioned to prevent lateral displacement of the steel sleeve 1.

[0041] A construction method using a steel sleeve fixing device for a pre-reserved opening in a floor slab as described above includes the following steps:

[0042] S1: Based on the connection location of the electromechanical pipeline, position the steel sleeve 1 to determine its position on the template 2. Measure the center of the bottom surface of the steel sleeve 1 (i.e., the center of the circle) and mark it on the template 2. Using a drill bit of the same diameter as the locking screw 5, drill a hole at the marked location on the template 2 to ensure that the locking screw 5 can pass smoothly through the hole.

[0043] S2: Based on the inner diameter of the steel sleeve 1, determine the matching positioning rod 8, and weld the positioning rod 8 evenly onto the connecting block 7;

[0044] S3: Fit the connecting block 7 onto the locking screw 5, and rotate the connecting block 7 to move the entire positioning device to the appropriate position on the locking screw 5.

[0045] S4: Pass the locking screw 5 through the hole on the template 2 so that the bottom of the positioning rod 8 fits tightly against the template 2;

[0046] S5: The steel sleeve 1 is placed on the outside of the positioning device and vertically on the template 2, so that the end of the positioning rod 8 away from the locking screw 5 abuts against the inner wall of the steel sleeve 1 to form effective support and restrict the lateral movement of the bottom of the steel sleeve 1.

[0047] S6: Install the first fixing plate 3 at the end of the steel sleeve 1 away from the template 2. The first fixing plate 3 is sleeved on the locking screw 5 and fits tightly with the top of the steel sleeve 1 to restrict the vertical movement of the steel sleeve 1. Then screw in the locking buckle 6 at the top to strengthen the fastening force.

[0048] S7: Install the second fixing plate 4 on the side of the template 2 away from the steel sleeve 1. The second fixing plate 4 is sleeved on the locking screw 5 and fits tightly against the side of the template 2 away from the steel sleeve 1. Then screw in the bottom locking buckle 6 to strengthen the fastening force and fasten the steel sleeve 1 between the first fixing plate 3 and the template 2.

[0049] Example: A steel sleeve fixing device for a pre-reserved opening in a floor slab includes a first fixing plate 3, a second fixing plate 4, a locking device, and a positioning device. The steel sleeve 1 is placed vertically on a template 2. The first fixing plate 3 is located at the end of the steel sleeve 1 furthest from the template 2, and the second fixing plate 4 is located on the side of the template 2 furthest from the steel sleeve 1. The locking device includes a locking screw 5, which passes through the first fixing plate 3, the steel sleeve 1, the positioning device, the template 2, and the second fixing plate 4. Locking buckles 6 are provided at both ends of the locking screw 5, and are respectively tightened to the sides of the first fixing plate 3 and the second fixing plate 4 furthest from the steel sleeve 1. The first fixing plate 3 and the second fixing plate 4 are quadrilateral plates, both capable of covering the diameter of the steel sleeve 1. The positioning device includes a connecting block 7, which is sleeved on the outside of the locking screw 5 and can move up and down along the locking screw 5. The connecting block 7 has a threaded hole that matches the locking screw 5. Three positioning rods 8 are welded onto the connecting block 7. The positioning rods 8 are evenly spaced along the circumference of the connecting block 7, and the end of the positioning rod 8 away from the connecting block 7 abuts against the inner wall of the steel sleeve 1. In this embodiment, the connecting block 7 is a nut, and the positioning rods 8 are reinforcing bars.

[0050] The advantages and positive effects of this invention are:

[0051] 1. This fixing device does not require fixing points to be set in the concrete floor slab, does not damage the concrete structure of the floor slab, and ensures the integrity of the floor slab and its self-waterproofing performance.

[0052] 2. By limiting the lateral displacement of the steel sleeve with positioning rods and limiting the vertical displacement of the steel sleeve with the first and second fixing plates, good anti-overturning performance is achieved, which can better resist the disturbance of external construction loads.

[0053] 3. The fixing device has a simple structure, is easy to manufacture, has a detachable connection, can be reused, and the materials can be obtained from the construction site without the need for external purchase, which not only improves construction efficiency but also saves costs.

[0054] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0055] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A steel sleeve fixing device for pre-reserved openings in floor slabs, used to fix the steel sleeve to the formwork, characterized in that: include, The first fixing plate is disposed at the end of the steel sleeve away from the template. A locking device passes through the first fixing plate, the steel sleeve, and the template to fasten the steel sleeve between the first fixing plate and the template; A positioning device is sleeved on the locking device, with one side fitting against the template, and the end of the positioning device away from the locking device abutting against the inner wall of the steel sleeve.

2. The steel sleeve fixing device for a reserved opening in a floor slab according to claim 1, characterized in that: It also includes a second fixing plate, which is disposed on the side of the template away from the steel sleeve, and the second fixing plate passes through the locking device.

3. The steel sleeve fixing device for a reserved opening in a floor slab according to claim 2, characterized in that: The areas of both the first fixing plate and the second fixing plate are larger than the diameter of the steel sleeve.

4. A steel sleeve fixing device for a reserved opening in a floor slab according to claim 2 or 3, characterized in that: The locking device includes a locking screw that passes through the first fixing plate, the steel sleeve, the positioning device, the template, and the second fixing plate.

5. A steel sleeve fixing device for a pre-reserved opening in a floor slab according to claim 4, characterized in that: The locking screw has locking buckles at both ends.

6. The steel sleeve fixing device for a reserved opening in a floor slab according to claim 4, characterized in that: The positioning device includes a connecting block, which is sleeved on the outside of the locking screw and can move up and down along the locking screw.

7. A steel sleeve fixing device for a reserved opening in a floor slab according to claim 6, characterized in that: The connecting block is provided with a threaded hole, which is adapted to the locking screw.

8. A steel sleeve fixing device for a reserved opening in a floor slab according to claim 6 or 7, characterized in that: The connecting block is provided with a plurality of positioning rods, which are arranged along the circumference of the connecting block, and the end of the positioning rod away from the connecting block abuts against the inner wall of the steel sleeve.

9. A steel sleeve fixing device for a reserved opening in a floor slab according to claim 8, characterized in that: The positioning rods are evenly distributed along the circumference of the connecting block.

10. A construction method using a steel sleeve fixing device for a pre-reserved opening in a floor slab as described in claim 1, characterized in that: Includes the following steps, A hole is made on the template at the position corresponding to the center of the steel sleeve; The positioning device is fitted onto the locking device; Pass the locking device through the hole so that the positioning device fits against the template; The steel sleeve is fitted over the outside of the positioning device, so that the end of the positioning device away from the locking device abuts against the inner wall of the steel sleeve; The first fixing plate is installed at the end of the steel sleeve away from the template, and the first fixing plate is sleeved on the locking device; The locking device is used to fasten the steel sleeve between the first fixing plate and the template.

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