An automatic form stripping device for a reserved hole of a concrete floor and a construction method thereof

Abstract

The application discloses a kind of automatic form stripping device for concrete floor reserved hole and its construction method, including steel sleeve, steel pipe, timing switch, travel switch, elastic limiting piece and reset piece, steel pipe is located in the middle of steel sleeve, one end of steel pipe is connected with formwork, elastic limiting piece is equipped on steel pipe, elastic limiting piece can bear the upper surface of steel sleeve, reset piece is also equipped on steel pipe, one end of reset piece is connected with steel pipe, the other end of reset piece is connected with the inner wall of steel sleeve, timing switch is equipped on the outer wall of the outer wall of steel sleeve, travel switch is equipped on the inner wall of steel sleeve, timing switch is connected with travel switch.The setting of timing switch, travel switch, elastic limiting piece and reset piece can realize timing automatic form stripping, avoid the damage of artificial form stripping to the surface of reserved hole, and the device is simple to operate, low in manufacturing cost, can be repeatedly used, without manpower for removal, saves manpower cost, with good economy.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an automatic formwork removal device for pre-reserved holes in concrete floor slabs and its construction method. Background Technology

[0002] In existing construction projects, pre-installed water and electricity holes in floor slabs are typically created using PVC sleeves embedded in the slab before concrete pouring. After the concrete has set, the sleeves are manually removed for reuse during the construction of the next floor. This existing method requires dedicated personnel to remove the formwork after the concrete has set, which is labor-intensive. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic formwork removal device and its construction method for pre-reserved holes in concrete floor slabs, in order to solve the above-mentioned technical problems.

[0004] The technical solution adopted in this invention is as follows:

[0005] An automatic formwork removal device for pre-reserved holes in concrete floor slabs includes a steel sleeve, a steel pipe, a timer switch, a limit switch, an elastic limiter, and a reset component. The steel pipe is located in the middle of the steel sleeve, and one end of the steel pipe is connected to the formwork. The elastic limiter is provided on the steel pipe and can abut against the upper surface of the steel sleeve. The reset component is also provided on the steel pipe, with one end connected to the steel pipe and the other end connected to the inner wall of the steel sleeve. The timer switch is provided on the outer wall of the steel sleeve, and the limit switch is provided on the inner wall of the steel sleeve. The timer switch is connected to the limit switch, and the limit switch is directly opposite the elastic limiter.

[0006] Preferably, the template is provided with a screw connector, one end of the steel pipe is connected to the screw connector, and the other end of the steel pipe is provided with a handle ring.

[0007] Preferably, the elastic limiting member includes an L-shaped connecting rod and a triangular piece at one end of the connecting rod. One end of the connecting rod is located inside the steel pipe, and the other end of the connecting rod extends out of the steel pipe and is directly opposite the limit switch.

[0008] As a further preferred embodiment, the steel pipe has an opening on its side wall, through which the triangular piece can extend out of the steel pipe and abut against the upper surface of the steel sleeve.

[0009] As a further preferred embodiment, the steel pipe also includes a first spring, which is provided on the inner wall of the steel pipe, and one end of the first spring is connected to one end of the connecting rod.

[0010] Preferably, the reset component includes a second spring and a fixing plate disposed around the periphery of the steel pipe. The fixing plate is fixedly connected to the steel pipe, one end of the second spring is connected to the fixing plate, and the other end of the second spring abuts against the upper inner wall of the steel sleeve.

[0011] A construction method for an automatic formwork removal device for pre-reserved holes in concrete floor slabs, the construction method comprising:

[0012] S1. Connect and fix one end of the steel pipe to the threaded connector on the template;

[0013] S2. By manually pressing down on the steel sleeve, the steel sleeve compresses the second spring, and at the same time, the inner wall of the second spring squeezes the triangular piece, causing the triangular piece to enter the steel tube.

[0014] S3. The steel sleeve moves downward until the upper surface of the steel sleeve is lower than the opening position. At this time, the triangular piece automatically pops out under the action of the first spring and abuts against the upper surface of the steel sleeve.

[0015] S4. Set the timer for the timer switch, and then pour the concrete.

[0016] S5. When the timer switch reaches the specified time, it sends a signal to the limit switch. The limit switch pushes the other end of the connecting rod, causing the connecting rod to drive the triangular piece into the steel pipe.

[0017] S6. Then, the steel sleeve is instantly ejected under the action of the second spring.

[0018] The above technical solution has the following advantages or beneficial effects:

[0019] In this invention, by setting a timer switch, a limit switch, an elastic limit component and a reset component, automatic timed demolding can be achieved, avoiding damage to the surface of the reserved hole caused by manual demolding. Moreover, the device is simple to operate, has low manufacturing cost, can be reused, and does not require manual demolding, saving labor costs and having good economic benefits. Attached Figure Description

[0020] Figure 1 This is a top view of the automatic formwork removal device for pre-reserved holes in concrete floor slabs in this invention;

[0021] Figure 2 This is an installation diagram of the automatic formwork removal device for pre-reserved holes in concrete floor slabs in this invention;

[0022] Figure 3 This is a schematic diagram of the demolding process of the automatic demolding device for pre-reserved holes in concrete floor slabs in this invention.

[0023] In the diagram: 1. Steel sleeve; 2. Steel pipe; 3. Timer switch; 4. Limit switch; 5. Screw connector; 6. Connecting rod; 7. Triangular piece; 8. First spring; 9. Second spring; 10. Fixing piece; 11. Handle ring. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Therefore, they should not be construed as limitations on this invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 invention based on the specific circumstances.

[0027] Figure 1 This is a top view of the automatic formwork removal device for pre-reserved holes in concrete floor slabs in this invention; Figure 2 This is an installation diagram of the automatic formwork removal device for pre-reserved holes in concrete floor slabs in this invention; Figure 3 This is a schematic diagram of the demolding process for the automatic demolding device for pre-reserved holes in concrete floor slabs according to the present invention. Please refer to [link / reference]. Figures 1 to 3The diagram illustrates a preferred embodiment of an automatic formwork removal device for pre-drilled holes in concrete floor slabs. The device includes a steel sleeve 1, a steel pipe 2, a timer switch 3, a limit switch 4, an elastic limiter, and a reset component. The steel pipe 2 is located in the middle of the steel sleeve 1, with one end connected to the formwork. The elastic limiter is mounted on the steel pipe 2, capable of pressing against the upper surface of the steel sleeve 1. A reset component is also mounted on the steel pipe 2, with one end connected to the steel pipe 2 and the other end connected to the inner wall of the steel sleeve 1. The timer switch 3 is mounted on the outer wall of the steel sleeve 1, and the limit switch 4 is mounted on the inner wall of the steel sleeve 1. The timer switch 3 and the limit switch 4 are connected, and the limit switch 4 is directly opposite the elastic limiter. (See also...) Figure 2 and Figure 3 As shown, the elastic limiting member is used to hold the steel sleeve 1 in place, fixing its position. The reset member is used to reset the position of the steel sleeve 1, returning it to its initial position. The timer switch 3 is used to set a time. When the set time is reached, the timer switch 3 automatically controls the limit switch 4, causing the push rod on the limit switch 4 to push outward, thus holding the elastic limiting member in place and moving it into the steel pipe 2. This releases the restriction on the position of the steel sleeve 1, and then the steel sleeve 1 can be lifted upward by the reset member, returning to its initial position.

[0028] By setting up timer switch 3, limit switch 4, elastic limit component and reset component, automatic mold disassembly can be achieved, avoiding damage to the surface of the reserved hole caused by manual mold disassembly.

[0029] In this embodiment, the outer peripheral wall and bottom wall of the steel sleeve 1 are provided with a coating to prevent concrete adhesion, which facilitates the automatic ejection of the steel sleeve 1 and realizes automatic demolding.

[0030] Furthermore, as a preferred embodiment, the template is provided with a screw connector 5, one end of the steel pipe 2 is connected to the screw connector 5, and the other end of the steel pipe 2 is provided with a handle ring 11. The steel pipe 2 can be rotated by the handle ring 11. The lower end of the steel pipe 2 has an internal thread on its inner circumferential wall for connecting with the screw connector 5, which facilitates fixing the steel pipe 2 to the template.

[0031] Furthermore, as a preferred embodiment, the elastic limiting member includes an L-shaped connecting rod 6 and a triangular piece 7 located at one end of the connecting rod 6. One end of the connecting rod 6 is located inside the steel pipe 2, and the other end of the connecting rod 6 extends out of the steel pipe 2 and is directly opposite the limit switch 4. See also Figure 1 As shown, after the steel sleeve 1 is installed in place, the triangular piece 7 is located on the upper side of the steel sleeve 1. Then, under the action of the first spring 8, the triangular piece 7 is pressed against the upper surface of the steel sleeve 1, thus fixing the position of the steel sleeve 1. When pouring concrete, the upper surface of the concrete will not come into contact with the timer switch 3.

[0032] Furthermore, as a preferred embodiment, the steel pipe 2 has an opening on its side wall, through which the triangular piece 7 can extend out of the steel pipe 2 and abut against the upper surface of the steel sleeve 1. A first spring 8 is provided on the inner wall of the steel pipe 2, with one end of the first spring 8 connected to one end of the connecting rod 6. The first spring 8 is used to push the triangular piece 7 out of the steel pipe 2.

[0033] Furthermore, as a preferred embodiment, the reset component includes a second spring 9 and a fixing plate 10 disposed around the periphery of the steel pipe 2. The fixing plate 10 is fixedly connected to the steel pipe 2, one end of the second spring 9 is connected to the fixing plate 10, and the other end of the second spring 9 abuts against the upper inner wall of the steel sleeve 1. The second spring 9 is used for the automatic reset of the steel sleeve 1, which facilitates the ejection of the steel sleeve 1 from the reserved hole and realizes automatic demolding.

[0034] In this embodiment, the height and diameter of the steel sleeve 1 can be selected according to the size of the reserved hole. For example, if the reserved hole size is DN100, the steel sleeve 1 is made of 3mm steel plate. A φ10 steel pipe 2 passes through the middle of the steel sleeve 1. A φ6 round steel is welded to the upper part of the steel pipe 2 to make a handle ring 11. A circular fixing plate 10 is made of 5mm thick steel plate at the bottom. A connecting rod 6 is made of φ6 round steel in the middle of the steel pipe 2. A 3mm triangular iron plate is welded to the upper part of the connecting rod 6. A 5N second spring 9 is sleeved on the outside of the steel pipe 2. The electrical control device uses a timer switch 3 with its own power supply, and the timer switch 3 is connected to the limit switch 4 through a wire.

[0035] The preferred construction method of this invention will be described below:

[0036] A construction method for an automatic formwork removal device for pre-reserved holes in concrete floor slabs, the construction method comprising:

[0037] S1. Connect and fix one end of the steel pipe 2 to the threaded connector 5 on the template;

[0038] S2. By manually pressing down on the steel sleeve 1, the steel sleeve 1 compresses the second spring 9, and at the same time, the inner wall of the second spring 9 squeezes the triangular piece 7, so that the triangular piece 7 enters the steel pipe 2; the upper side of the triangular piece 7 is inclined, which facilitates squeezing the triangular piece 7, so that the triangular piece 7 enters the steel pipe 2.

[0039] S3. The steel sleeve 1 moves downward until the upper surface of the steel sleeve 1 is lower than the opening position. At this time, the triangular piece 7 automatically pops out under the action of the first spring 8 and abuts against the upper surface of the steel sleeve 1.

[0040] S4. Set the timer for timer switch 3, and then pour the concrete.

[0041] S5. When the timer switch 3 reaches the specified time, it sends a signal to the limit switch 4. The limit switch 4 pushes the other end of the connecting rod 6, so that the connecting rod 6 drives the triangular piece 7 into the steel pipe 2.

[0042] S6. Then, the steel sleeve 1 is instantly ejected under the action of the second spring 9.

[0043] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic formwork removal device for pre-reserved holes in concrete floor slabs, characterized in that, The device includes a steel sleeve, a steel pipe, a timer switch, a limit switch, an elastic limiter, and a reset component. The steel pipe is located in the middle of the steel sleeve, and one end of the steel pipe is connected to a template. The elastic limiter is provided on the steel pipe and can abut against the upper surface of the steel sleeve. The reset component is also provided on the steel pipe, with one end connected to the steel pipe and the other end connected to the inner wall of the steel sleeve. The timer switch is provided on the outer wall of the steel sleeve, and the limit switch is provided on the inner wall of the steel sleeve. The timer switch is connected to the limit switch, and the limit switch is directly opposite the elastic limiter. The template is provided with a screw connector, one end of the steel pipe is connected to the screw connector, and the other end of the steel pipe is provided with a handle ring; The elastic limiting component includes an L-shaped connecting rod and a triangular piece at one end of the connecting rod. One end of the connecting rod is located inside the steel pipe, and the other end of the connecting rod extends out of the steel pipe and is directly opposite the limit switch. The steel pipe has an opening on its side wall, and the triangular piece can extend out of the steel pipe through the opening and abut against the upper surface of the steel sleeve. The reset component includes a second spring and a fixing plate disposed around the periphery of the steel pipe. The fixing plate is fixedly connected to the steel pipe, one end of the second spring is connected to the fixing plate, and the other end of the second spring abuts against the upper inner wall of the steel sleeve.

2. The automatic formwork removal device for pre-reserved holes in concrete floor slabs as described in claim 1, characterized in that, It also includes a first spring, which is provided on the inner wall of the steel pipe, and one end of the first spring is connected to one end of the connecting rod.

3. A construction method using the automatic formwork removal device for pre-reserved holes in concrete floor slabs as described in any one of claims 1-2, characterized in that, include: S1. Connect and fix one end of the steel pipe to the threaded connector on the template; S2. By manually pressing down on the steel sleeve, the steel sleeve compresses the second spring, and at the same time, the inner wall of the second spring squeezes the triangular piece, causing the triangular piece to enter the steel tube. S3. The steel sleeve moves downward until the upper surface of the steel sleeve is lower than the opening position. At this time, the triangular piece automatically pops out under the action of the first spring and abuts against the upper surface of the steel sleeve. S4. Set the timer for the timer switch, and then pour the concrete. S5. After the timer switch reaches the specified time, it sends a signal to the limit switch. The limit switch pushes the other end of the connecting rod, causing the connecting rod to drive the triangular piece into the steel pipe. S6. Then, the steel sleeve is instantly ejected under the action of the second spring.

Images