Concrete reserved hole steel sleeve positioning device

Abstract

The utility model belongs to the technical field of building engineering construction, and particularly discloses a concrete reserved hole steel sleeve positioning device which comprises a formwork and a sleeve, the top of the sleeve is fixedly connected with a limiting assembly, a screw penetrates through the limiting assembly, the bottom of the screw is in threaded connection with a first nut, and the formwork is located between the sleeve and the first nut. In order to solve the problem that in the prior art, when floor concrete pouring is carried out, the reserved hole steel sleeve deviates in the vibrating process, the reserved hole steel sleeve is fixed to the formwork through the screw and the nut, and when floor concrete pouring is carried out, the reserved hole steel sleeve is fixed to the formwork through the screw and the nut. The steel sleeve is arranged in the vibration process, dislocation of the floor reserved hole caused by displacement of the steel sleeve in the vibration process is prevented, and the problem that when floor concrete is poured, dislocation of the concrete floor pipeline reserved hole caused by displacement of the steel sleeve of the reserved hole in the vibration process is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a positioning device for steel sleeves in concrete reserved holes. Background Technology

[0002] In building installation projects, before pipes pass through building walls or floors, pre-drilled holes must be made in coordination with civil engineering. The size of the holes is determined by the pipe diameter. Before concrete pouring, rebar tying must be carried out. During the rebar tying process, the positioning of the steel sleeves for the pre-drilled holes in the concrete must be carried out to ensure the accurate positioning of the pre-drilled holes in the floor slab after the concrete is poured. Traditionally, the pre-drilled hole sleeves are made using liftable steel sleeves, PVC sleeves, or square or rectangular wooden boxes, fixed with nails and wires. Usually, each sleeve requires four nails and wires for fixing. The entire process is time-consuming, wastes a lot of nails and wires, and has a low sleeve reuse rate. Furthermore, during the pouring of floor slab concrete, vibration is required to increase density. During vibration, the rebar may shift, which can easily cause the nails to loosen and the steel sleeves to shift, resulting in misalignment of the pre-drilled holes for pipes in the concrete floor slab. This seriously affects the subsequent installation of pipes. In particular, the correction of pre-drilled holes in bathrooms can damage the completed waterproofing and leave potential water leakage hazards.

[0003] To address the aforementioned issues, this utility model provides a steel sleeve positioning device for pre-reserved holes in concrete. This device effectively prevents the steel sleeve from shifting during the vibration process of concrete pouring, which in turn prevents the pre-reserved holes for pipes in the concrete slab from becoming misaligned. This ensures the accuracy of the pre-reserved hole position after the concrete slab is poured, facilitating the subsequent installation of pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning device for steel sleeves of reserved holes in concrete, so as to solve the problem that the steel sleeves of reserved holes shift during the vibration process when pouring concrete for floor slabs, resulting in misalignment of the reserved holes for pipes in the concrete floor slab.

[0005] To achieve the above objectives, the basic solution provided by this utility model is as follows: a steel sleeve positioning device for concrete reserved holes, comprising a template and a sleeve, a steel plate fixedly connected to the top of the sleeve, a first nut fixedly connected to the steel plate, a threaded rod passing through the steel plate, a second nut threadedly connected to the bottom of the threaded rod, the template being located between the sleeve and the second nut, and the threaded rod passing through the template.

[0006] The working principle of this utility model is as follows: When in use, firstly, the screw rod is passed through the first nut and the steel plate in sequence, then the screw rod is passed through the template, and then the second nut is passed through the bottom of the screw rod and tightened to fix it, so that the sleeve is fixed between the steel plate and the template. After the fixation is completed, concrete can be poured. When the concrete initially sets, the second nut is turned to pull out the screw rod, and then the pre-drilled sleeve can be taken out.

[0007] The beneficial effects of this utility model are as follows: By fixing the steel sleeve of the reserved hole in the floor slab to the template using screws, nuts and steel plates, this utility model effectively prevents the steel sleeve from shifting and causing the reserved hole to misalign during the pouring of floor slab concrete. Compared with the traditional method of positioning the reserved hole sleeve, this design can fix the steel sleeve to the template and prevent the steel sleeve from shifting during vibration and causing the reserved hole to misalign. Moreover, compared with the traditional method of positioning the reserved hole sleeve, it can not only reduce the use of iron nails and iron wire, preventing waste, but also improve work efficiency.

[0008] Option 2, a preferred option of the basic option, is that the sleeve is composed of several arc-shaped pieces spliced ​​together. A rotating rod is bolted to the screw, a bearing is fixedly connected to the rotating rod, and an arc-shaped connecting rod is fixedly connected to the bearing. The other end of the arc-shaped connecting rod is fixedly connected to the arc-shaped pieces, which can adjust the size of the sleeve diameter and is suitable for reserved holes of different sizes.

[0009] Option 3, which is a preferred option of the basic option, is provided with a gasket at the connection between the steel plate and the second nut, and a gasket at the connection between the sleeve and the template. The gasket can increase the contact area, reduce pressure, prevent loosening, and at the same time play a sealing role to prevent concrete from leaking from the gaps at the connection and causing the hole to be blocked.

[0010] Option 4 is a preferred option of the basic option, where the first nut is a wing nut, which is convenient for the user to operate.

[0011] Option 5, which is a preferred option of the basic option, is provided with a pull ring on the steel plate, which allows the user to remove the sleeve for easy operation.

[0012] Option 6, which is a preferred option of the basic option, has a polytetrafluoroethylene coating on the outer wall of the sleeve. The polytetrafluoroethylene coating can effectively prevent undried concrete from adhering to the sleeve, making it easier for the user to remove the sleeve. Attached Figure Description

[0013] Figure 1 This is a perspective view of a steel sleeve positioning device for a pre-reserved concrete hole according to this utility model;

[0014] Figure 2 This is a side view of a steel sleeve positioning device for a pre-reserved concrete hole according to this utility model;

[0015] Figure 3 This is a top view of a steel sleeve positioning device for a pre-reserved concrete hole according to this utility model;

[0016] Figure 4 This is a perspective view of the sleeve in the positioning device for a steel sleeve in a pre-reserved concrete hole according to this utility model.

[0017] Figure 5 This is a three-dimensional view of the steel sleeve positioning device for pre-reserved concrete holes according to this utility model after the sleeve diameter has been adjusted. Detailed Implementation

[0018] The present invention will be further described in detail below through specific embodiments:

[0019] The reference numerals in the accompanying drawings of the instruction manual include: 1. Template; 2. Sleeve; 3. Screw; 4. First nut; 5. Steel plate; 6. Second nut; 7. Washer; 8. Pull ring; 9. Rotating rod; 10. Arc-shaped connecting rod; 11. Bearing.

[0020] like Figures 1 to 5 As shown: A positioning device for a steel sleeve for a pre-reserved concrete hole includes a template 1 and a sleeve 2. The outer wall of the sleeve 2 is coated with polytetrafluoroethylene. The sleeve 2 is composed of several arc-shaped pieces spliced ​​together. A steel plate 5 is fixedly connected to the top of the sleeve 2. A screw rod 3 passes through the steel plate 5. A rotating rod 9 is bolted to the screw rod 3. A bearing 11 is fixedly connected to the rotating rod 9. An arc-shaped connecting rod 10 is fixedly connected to the bearing 11. The other end of the arc-shaped connecting rod 10 is fixedly connected to the arc-shaped piece. A second nut 6, which is a wing nut, is threaded to the bottom of the screw rod 3. A first nut 4 is fixedly connected to the steel plate 5. A pull ring 8 is provided on the steel plate 5. The first nut 4 and the screw rod 3 are threadedly connected. The template 1 is located between the sleeve 2 and the second nut 6. The screw rod 3 passes through the template 1. A gasket 7 is provided at the connection between the steel plate 5 and the first nut 4. A gasket 7 is provided at the connection between the sleeve 2 and the template 1.

[0021] The implementation method of this embodiment is as follows: When it is necessary to fix the sleeve 2 at the reserved hole of the floor slab, firstly, rotate the rotating rod 9 clockwise so that the rotating rod 9 drives the arc-shaped connecting rod 10 and the arc-shaped piece connected to the bearing 9 to rotate. After adjusting the diameter of the sleeve 2 to a suitable size, pass the steel plate 5 and the gasket 7 through the top of the screw 3 in sequence. Then, insert the first nut 4 through the top of the screw 3 and tighten it. Next, pass the screw 3 through the template 1. Then, pass the gasket 7 through the bottom of the screw 3. Then, insert the second nut 6 through the bottom of the screw 3 and tighten it to fix the sleeve 2 between the steel plate 5 and the template 1. After the fixing is completed, the concrete pouring work can be carried out. When the concrete initially sets, first unscrew the second nut 6 from the screw 3. Then, hold the pull ring 8 and pull it upward. The sleeve 2 of the reserved hole can be taken out.

[0022] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A positioning device for a steel sleeve in a pre-reserved concrete hole, characterized in that, Includes a template (1) and a sleeve (2). A steel plate (5) is fixedly connected to the top of the sleeve (2). A first nut (4) is fixedly connected to the steel plate (5). A screw (3) passes through the steel plate (5). A second nut (6) is threaded to the bottom of the screw (3). The template (1) is located between the sleeve (2) and the second nut (6). The screw (3) passes through the template (1).

2. The positioning device for a steel sleeve in a pre-reserved concrete hole according to claim 1, characterized in that, The sleeve (2) is composed of several arc-shaped pieces spliced ​​together. A rotating rod (9) is bolted to the screw (3). A bearing (11) is fixedly connected to the rotating rod (9). An arc-shaped connecting rod (10) is fixedly connected to the bearing (11). The other end of the arc-shaped connecting rod (10) is fixedly connected to the arc-shaped piece.

3. The positioning device for a steel sleeve in a pre-reserved concrete hole according to claim 2, characterized in that, A gasket (7) is provided at the connection between the steel plate (5) and the first nut (4), and a gasket (7) is provided at the connection between the sleeve (2) and the template (1).

4. The positioning device for a steel sleeve in a pre-reserved concrete hole according to claim 1, characterized in that, The second nut (6) is a wing nut.

5. The positioning device for a steel sleeve in a pre-reserved concrete hole according to claim 2, characterized in that, The steel plate (5) is provided with a pull ring (8).

6. The positioning device for a steel sleeve in a pre-reserved concrete hole according to claim 1, characterized in that, The outer wall of the sleeve (2) is coated with polytetrafluoroethylene.

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