Easily-demoulded pile casing for floor measurement reserved hole
By designing an easy-to-demold casing, the problem of difficult casing removal was solved, enabling efficient and convenient removal and reuse of the casing, thus improving construction quality and economy.
Patent Information
- Application Number
- CN202422975849.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In existing technologies, when the casing for the pre-reserved hole in the floor measurement is pulled out before the concrete has initially set, it can easily cause the concrete to collapse, affecting the quality of the poured layer, and the casing is difficult to remove efficiently.
An easy-to-demold protective cylinder composed of a cylinder body, a fixing ring, a support plate, and a protective cylinder plate was designed. Through detachable connection and telescopic rod structure, combined with high wear-resistant stainless steel material and release agent, the protective cylinder can be easily removed.
After the concrete has hardened, the difficulty of removing the casing from the floor slab is reduced by dismantling the fixing ring, support plate and casing plate in stages, which improves the dismantling efficiency. The structure is simple and reusable, which reduces the cost.
Smart Images

Figure CN223621246U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to building construction molds, specifically to a demolding sleeve for pre-reserved holes for floor measurement. Background Technology
[0002] In building construction, floor surveying and setting out require starting from the lower floor. Therefore, a casing must be pre-fabricated as a reserved opening during concrete pouring. After the concrete hardens, the friction between the concrete and the outer wall of the casing increases, making it more difficult to remove the casing. Currently, the common method is to remove the casing before the concrete initially sets. The consequence of this is that, because the concrete strength of the poured layer has not yet reached its full potential, the concrete around the casing often collapses incompletely, affecting the quality of the poured layer around the casing. Summary of the Invention
[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an easy-to-demold protective sleeve for pre-reserved holes for floor measurement.
[0004] The purpose of this utility model is achieved through the following technical solution: a pre-reserved hole for floor measurement that is easy to demold, comprising a cylinder in the shape of an inverted frustum, a fixing ring detachably connected to the top of the cylinder, and a support plate detachably connected to the bottom of the cylinder. The cylinder is composed of several protective plates connected in sequence. The bottom of the fixing ring is provided with an annular groove that matches the top of the cylinder. The top of the cylinder is inserted into the annular groove. The outer edge of the top of the support plate is provided with an annular side groove that matches the bottom of the cylinder. The bottom of the cylinder abuts against the annular side groove. The height of the cylinder is higher than the thickness of the floor slab pouring layer.
[0005] Furthermore, the top of the cylinder is provided with a first annular protrusion that protrudes upwards and is embedded in the annular groove.
[0006] Furthermore, the bottom of the cylinder is provided with a second annular protrusion that protrudes downwards and abuts against the annular side groove.
[0007] Furthermore, a telescopic rod is fixed between the inner middle of two opposing protective shell plates among the plurality of protective shell plates.
[0008] Furthermore, the telescopic rod includes a turnbuckle body, a first screw and a second screw respectively screwed to both ends of the turnbuckle body, and the ends of the first screw and the second screw are respectively fixedly connected to the inner middle of the two opposing protective sleeve plates.
[0009] Furthermore, a rotating handle is fixed to the outside of the main body of the turnbuckle.
[0010] Furthermore, the two opposing sides of the casing plate are located on the same plane.
[0011] Furthermore, the cylinder body is made of highly wear-resistant stainless steel.
[0012] Furthermore, the outer wall of the cylinder is coated with a release agent.
[0013] Furthermore, the height of the cylinder is 20cm-30cm.
[0014] The beneficial effects of this utility model are as follows: The easy-to-demold protective casing for pre-reserved holes in floor measurement of this utility model is divided into multiple components such as a fixing ring, multiple casing plates, and a support plate. After the concrete has solidified, the fixing ring at the top of the casing is removed first, then the support plate at the bottom of the casing is removed, and then the multiple casing plates are removed. This reduces the difficulty of removing the casing from the floor slab pouring layer, and the removal of the casing is more efficient and convenient. The structure is simple and easy to use; the casing can be reused, reducing costs. Attached Figure Description
[0015] Figure 1 This is a perspective view of the present invention.
[0016] Figure 2 This is an anatomical view of the present invention.
[0017] The attached figures are labeled as follows: cylinder 1, protective plate 11, first annular protrusion 12, second annular protrusion 13, fixing ring 2, annular groove 21, support plate 3, annular side groove 31, telescopic rod 4, turnbuckle body 41, first screw 42, second screw 43, rotating handle 44. Detailed Implementation
[0018] To facilitate understanding by those skilled in the art, the following description is provided in conjunction with embodiments and appendices. Figure 1-2 The present invention will be further described below. The content mentioned in the embodiments is not intended to limit the present invention.
[0019] See Figure 1-2 A type of easily demolded protective sleeve for pre-reserved holes for floor measurement includes a cylinder 1 in the shape of an inverted frustum, a fixing ring 2 detachably connected to the top of the cylinder 1, and a support plate 3 detachably connected to the bottom of the cylinder 1. The cylinder 1 is composed of several protective sleeve plates 11 connected in sequence. The bottom of the fixing ring 2 is provided with an annular groove 21 that matches the top of the cylinder 1. The top of the cylinder 1 is inserted into the annular groove 21. The top edge of the support plate 3 is provided with an annular side groove 31 that matches the bottom of the cylinder 1. The bottom of the cylinder 1 abuts against the annular side groove 31. The height of the cylinder 1 is higher than the thickness of the floor slab pouring layer.
[0020] This utility model's easy-to-demold protective casing for pre-reserved holes in floor measurement disassembles the casing into multiple components such as a fixing ring 2, multiple casing plates 11, and a support plate 3. After the concrete has solidified, first remove the fixing ring 2 at the top of the casing 1, then remove the support plate 3 at the bottom of the casing 1, and finally remove the multiple casing plates 11. This reduces the difficulty of removing the casing from the floor slab pouring layer, and also makes the removal of the casing more efficient and convenient. The structure is simple and easy to use; the casing can be reused, reducing costs.
[0021] In this embodiment, the top of the cylinder 1 is provided with a first annular protrusion 12 protruding upwards, and the first annular protrusion 12 is embedded in the annular groove 21. The first annular protrusion 12 cooperates with the annular groove 21 of the fixing ring 2, and the first annular protrusion 12 is embedded in the annular groove 21, which facilitates the fixing ring 2 to fix the cylinder 1.
[0022] In this embodiment, the bottom of the cylinder 1 is provided with a second annular protrusion 13 protruding downwards, and the second annular protrusion 12 abuts against the annular side groove 31. The second annular protrusion 13 cooperates with the annular side groove 31 on the top edge of the support plate 3, and the second annular protrusion 12 abuts against the annular side groove 31, so that the support plate 3 can provide support for the bottom of the cylinder 1.
[0023] In this embodiment, a telescopic rod 4 is fixed between the inner middle of two opposing protective casing plates 11. Specifically, by adjusting the telescopic rod 4, two protective casing plates 11 that are tightly fitted to the pouring layer and respectively fixed to both ends of the telescopic rod 4 can be easily removed.
[0024] In this embodiment, the telescopic rod 4 includes a turnbuckle body 41, a first screw 42 and a second screw 43 respectively screwed to both ends of the turnbuckle body 41, and the ends of the first screw 42 and the second screw 43 are respectively fixedly connected to the inner middle of the two opposing protective sleeve plates 11. Specifically, rotating the turnbuckle body 41 clockwise causes the first screw 42 and the second screw 43 to extend outward, supporting the two protective sleeve plates 11 fixed to the ends of the first screw 42 and the second screw 43 respectively, thus strengthening the protective sleeve. After the concrete has solidified, rotating the turnbuckle body 41 counterclockwise causes the first screw 42 and the second screw 43 to retract inward, shortening the distance between the two protective sleeve plates 11 fixed to the ends of the first screw 42 and the second screw 43 respectively. Once the two protective sleeve plates 11 are separated from the poured layer, they can be lifted upward to remove the protective sleeve plates 11, reducing the difficulty of removing the protective sleeve plates 11 from the poured layer. Other protective sleeve plates 11 can also be removed by installing a telescopic rod 4 between the two opposite protective sleeve plates 11, or by tapping them off.
[0025] In this embodiment, a rotating handle 44 is fixed to the outside of the turnbuckle body 41. The rotating handle 44 facilitates the rotation of the turnbuckle body 41, thereby adjusting the length of the telescopic rod 4.
[0026] In this embodiment, the sides of the two opposing protective sleeve plates 11 are located on the same plane. The above structure facilitates the relative movement of the two opposing protective sleeve plates 11.
[0027] In this embodiment, the cylinder 1 is a high wear-resistant stainless steel cylinder. The use of high wear-resistant stainless steel in the cylinder 1 increases its compressive strength, allows for repeated use, and significantly reduces operating costs.
[0028] In this embodiment, the outer wall of the cylinder 1 is coated with a release agent. By coating the outer wall of the cylinder 1 with a release agent, the friction between the cylinder 1 and the cast layer can be reduced, the demolding time can be saved, and the difficulty of removing the cylinder 1 from the cast layer can be reduced.
[0029] In this embodiment, the height of the cylinder 1 is 20cm-30cm. Specifically, the height of the cylinder 1 can be set to 20cm, 22cm, 25cm, 28cm or 30cm as needed.
[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.
Claims
1. A type of easily demolded protective sleeve for pre-reserved holes in floor measurement, characterized in that: It includes a cylindrical body in the shape of an inverted frustum, a fixing ring detachably connected to the top of the cylindrical body, and a support plate detachably connected to the bottom of the cylindrical body. The cylindrical body is composed of several protective plates connected in sequence. The bottom of the fixing ring has an annular groove that matches the top of the cylindrical body. The top of the cylindrical body is inserted into the annular groove. The outer edge of the top of the support plate has an annular side groove that matches the bottom of the cylindrical body. The bottom of the cylindrical body abuts against the annular side groove. The height of the cylindrical body is higher than the thickness of the floor slab pouring layer.
2. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The top of the cylinder is provided with a first annular protrusion that protrudes upwards and is embedded in the annular groove.
3. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The bottom of the cylinder is provided with a second annular protrusion that protrudes downwards and abuts against the annular side groove.
4. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: A telescopic rod is fixed between the inner middle of two opposing protective shell plates.
5. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 4, characterized in that: The telescopic rod includes a turnbuckle body, a first screw and a second screw respectively screwed to both ends of the turnbuckle body, and the ends of the first screw and the second screw are respectively fixedly connected to the inner middle of the two opposing protective cylinder plates.
6. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 5, characterized in that: A rotating handle is fixed to the outside of the main body of the turnbuckle.
7. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The two opposing sides of the casing plate are located on the same plane.
8. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The cylinder is made of high wear-resistant stainless steel.
9. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The outer wall of the cylinder is coated with a release agent.
10. The easily demolded protective sleeve for pre-reserved holes for floor measurement according to claim 1, characterized in that: The height of the cylinder is 20cm-30cm.