Die device for floor reserved hole

Abstract

The utility model discloses a mould device for a floor reserved hole, which comprises a formwork and a mould pipe, the center of the mould pipe is arranged at the position of the reserved hole of the formwork, a sealing cover is fixed at the upper end of the mould pipe, a threaded cylinder is axially arranged in the mould pipe, and an external thread is arranged at the upper end of the threaded cylinder and penetrates through the sealing cover. The lower end of the threaded cylinder penetrates through the formwork supporting template and is rotationally provided with a rotating rod, the rotating rod can abut against the lower end face of the formwork supporting template when being horizontal, the rotating rod can pass through a through hole in the formwork supporting template when being vertical, and a fastening nut is arranged at the upper end of the threaded cylinder and can abut against the upper end face of the sealing cover. The device has the advantages that the device is clamped on the outer side of a formwork through the rotating rod rotationally arranged at the lower end of the threaded barrel, the sealing cover is limited at the upper end of the threaded barrel through the fastening nut, and therefore the mold pipe is positioned and fixed to the reserved hole position of the formwork, and the device can be detached after a floor slab is poured and formed and is convenient to use in a turnover mode.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a mold device for reserved holes in a floor slab. Background Art

[0002] In the field of building construction, the setting of reserved holes in a floor slab is a common and important process. The accurate setting of the reserved holes is crucial for subsequent pipeline installation, cable laying and other work.

[0003] However, in the prior art, there are obvious defects in the fixing method of the mold for reserved holes in a floor slab. At present, the more common method is to use steel wire ropes and iron nails for fixing. This fixing method shows many deficiencies in practical applications. Due to the flexibility of the steel wire ropes and the limitations of iron nail fixing, the fixing effect is not firm enough, and it is easy to be displaced under the influence of external forces during the construction process, thus causing the mold to be displaced, affecting the position accuracy of the reserved holes, increasing the construction error and the cost of subsequent repair.

[0004] In addition, some constructions use the method of fixing with finished reserved casing iron nails. Although this method can ensure the position of the mold to a certain extent, the finished reserved casing is often difficult to be reused, which not only increases the construction cost, but also causes waste of resources and has an adverse impact on the environment, not meeting the environmental protection concept and sustainable development requirements advocated by modern building construction. Summary of the Utility Model

[0005] In order to overcome the deficiencies in the fixing method in the prior art and improve the stability and reusability of the fixing of the mold for reserved holes in a floor slab, the utility model provides a mold device for reserved holes in a floor slab. The technical solution is as follows:

[0006] A mold device for reserved holes in a floor slab includes a formwork and a mold tube centrally arranged at the position of the reserved hole of the formwork. A sealing cover is fixed at the upper end of the mold tube. The lower end of the mold tube is closely attached to the upper end surface of the formwork. A threaded cylinder is arranged axially in the mold tube. The upper end of the threaded cylinder is provided with an external thread and penetrates through the sealing cover. The lower end of the threaded cylinder penetrates through the formwork and is rotatably provided with a rotating rod. When the rotating rod is horizontal, it can abut against the lower end surface of the formwork. When the rotating rod is vertical, it can pass through the through hole on the formwork. A fastening nut is arranged at the upper end of the threaded cylinder, and the fastening nut can abut against the upper end surface of the sealing cover.

[0007] Further, a pull rod is arranged inside the threaded cylinder. A handle is arranged at the upper end of the pull rod. Long strip-shaped rings are fixedly arranged on both sides of the lower end of the pull rod. A rack is arranged on the inner side wall of one of the long strip-shaped rings. A groove is formed at the bottom end of the threaded cylinder. Both sides of the rotating rod are rotationally connected to the inner wall of the groove through rotating shafts. A gear ring is sleeved and fixedly arranged on the rotating shaft. The gear ring is meshed and connected with the rack. When the pull rod is pulled up or pressed down through the handle, the rack at the lower end of the pull rod will drive the gear ring to rotate, thereby driving the rotating rod to rotate so that it is in a horizontal state or a vertical state. When the pull rod is in a horizontal state, it can block the position of the through hole on the formwork template, thereby positioning one end of the threaded cylinder. When the pull rod is in a vertical state, it can pass through the through hole, thereby removing the pull rod and the threaded cylinder.

[0008] Further, a grip is arranged at the upper end of the threaded cylinder. A spring is sleeved on the pull rod. The lower end of the spring is fixedly connected with the grip. The upper end of the spring is fixedly connected with the handle. When the spring is in a normal state without being stretched or compressed, the rotating rod is in a horizontal state, which is convenient for identifying the state of the rotating rod under the formwork template.

[0009] Further, a spring washer is sleeved on the threaded cylinder and located above the fastening nut. A limit nut is arranged on the threaded cylinder and located above the spring washer.

[0010] Further, one side of the gear ring abuts against the inner wall of the long strip-shaped ring, and the other side is meshed with the rack.

[0011] The beneficial effects of the technical solution provided by the present utility model are as follows: The device fixes and positions the mold pipe at the reserved hole position of the formwork template by using the rotating rod rotatably arranged at the lower end of the threaded cylinder to block the outside of the formwork template and using the fastening nut to limit the sealing cover at the upper end of the threaded cylinder. Moreover, the device can be disassembled after the floor slab is poured and formed, which is convenient for turnover and use. The device not only improves the stability but also improves the reusability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the following listed drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0013] Figure 1 is the overall structural schematic diagram of the embodiment of the present utility model;

[0014] Figure 2 is the schematic diagram inside the threaded cylinder and its lower groove in the embodiment of the present utility model;

[0015] Figure 3Yes Figure 2 Schematic diagram of the structure at position A in the middle

[0016] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. Formwork template; 2. Sealing cover; 3. Threaded barrel; 4. Rotating rod; 5. Tightening nut; 6. Pull rod; 7. Handle; 8. Long strip-shaped ring; 9. Rack; 10. Gear ring; 11. Grip; 12. Spring; 13. Spring washer; 14. Limit nut; 15. Floor slab to be poured; 16. Mold tube Detailed implementation manners

[0017] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail with reference to the attached drawings

[0018] See Figures 1 to 3 , an embodiment of the present utility model provides a mold device for a reserved hole in a floor slab, including a formwork template 1 and a mold tube 16 centrally arranged at the reserved hole position of the formwork template 1. A sealing cover 2 is fixed to the upper end of the mold tube 16, the lower end of the mold tube 16 is closely attached to the upper end surface of the formwork template 1, a threaded barrel 3 is axially arranged in the mold tube 16, the upper end of the threaded barrel 3 is provided with an external thread and penetrates through the sealing cover 2, the lower end of the threaded barrel 3 penetrates through the formwork template 1 and is rotatably provided with a rotating rod 4. When the rotating rod 4 is horizontal, it can abut against the lower end surface of the formwork template 1. When the rotating rod 4 is vertical, it can pass through the through hole on the formwork template 1. A tightening nut 5 is arranged at the upper end of the threaded barrel 3, and the tightening nut 5 can abut against the upper end surface of the sealing cover 2. A release agent is applied to the outer wall of the mold tube 16 or a plastic film is coated, which is convenient for disassembly after the floor slab 15 to be poured is formed

[0019] A pull rod 6 is arranged in the threaded barrel 3. A handle 7 is arranged at the upper end of the pull rod 6. Long strip-shaped rings 8 are fixed to both sides of the lower end of the pull rod 6. A rack 9 is arranged on the inner side wall of one of the long strip-shaped rings 8. A groove is formed at the bottom end of the threaded barrel 3. Both sides of the rotating rod 4 are rotatably connected to the inner wall of the groove through a rotating shaft. A gear ring 10 is sleeved and fixedly arranged on the rotating shaft. The gear ring 10 is meshed with the rack 9

[0020] A grip 11 is arranged at the upper end of the threaded barrel 3. A spring 12 is sleeved on the pull rod 6. The lower end of the spring 12 is fixedly connected to the grip 11, and the upper end of the spring 12 is fixedly connected to the handle 7

[0021] A spring washer 13 is sleeved on the threaded barrel 3 and located above the tightening nut 5. A limit nut 14 is arranged on the threaded barrel 3 and located above the spring washer 13

[0022] One side of the gear ring 10 abuts against the inner wall of the long strip-shaped ring 8, and the other side is meshed with the rack 9

[0023] Usage method: When using this device, first mark the position of the reserved hole on the formwork template 1, then place the die tube 16 at the corresponding position, press down or pull up the handle 7 to drive the pull rod 6 to move upward or downward, so that the rack 9 at the lower end of the pull rod 6 drives the gear ring 10 to rotate, and then the rotating rod 4 rotates to a vertical state, ensuring that it can pass through the through hole on the formwork template 1. After the rotating rod 4 passes through the through hole, stop operating the handle 7, and it will return to the horizontal state under the elastic force of the spring 12. Then, clamp and fix the die tube 16 by rotating the fastening nut 5 and the limit nut 14; after the floor slab to be poured is formed, rotate the fastening nut 5 and the limit nut 14 upward so that the threaded cylinder 3 can move downward and there is enough space for the rotating rod 4 to rotate. Then, by pulling up or pressing down the pull rod 6, the rack 9 drives the gear ring 10 to rotate, so that the rotating rod 4 remains vertical, and then lift the threaded cylinder 3 and remove the die tube 16 at the same time.

[0024] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold device for a reserved hole in a floor slab, characterized in that: The invention comprises a formwork template (1) and a mold tube (16) whose center is arranged at a reserved hole position of the formwork template (1); a sealing cover (2) is fixed to the upper end of the mold tube (16); the lower end of the mold tube (16) is in close contact with the upper end surface of the formwork template (1); a threaded tube (3) is axially arranged inside the mold tube (16); the upper end of the threaded tube (3) is provided with an external thread and passes through the sealing cover (2); the lower end of the threaded tube (3) passes through the formwork template (1) and is rotatably provided with a rotating rod (4); the rotating rod (4) can abut against the lower end surface of the formwork template (1) when it is horizontal; and can pass through the through hole on the formwork template (1) when it is vertical; a fastening nut (5) is arranged at the upper end of the threaded tube (3), and the fastening nut (5) can abut against the upper end surface of the sealing cover (2).

2. The mold device for reserved openings in floor slabs according to claim 1, characterized in that: A pull rod (6) is arranged inside the threaded barrel (3), a handle (7) is arranged at the upper end of the pull rod (6), long strip rings (8) are fixed on both sides of the lower end of the pull rod (6), a rack (9) is arranged on the inner wall of the long strip ring (8), a groove is opened at the bottom end of the threaded barrel (3), the two sides of the rotating rod (4) are rotatably connected to the inner wall of the groove through a rotating shaft, a gear ring (10) is sleeved and fixed on the rotating shaft, and the gear ring (10) is meshingly connected with the rack (9).

3. The mold device for reserved openings in floor slabs according to claim 2, characterized in that: The upper end of the threaded barrel (3) is provided with a grip (11), the pull rod (6) is sleeved with a spring (12), the lower end of the spring (12) is fixedly connected to the grip (11), and the upper end of the spring (12) is fixedly connected to the handle (7).

4. The mold device for reserved openings in floor slabs according to claim 1, characterized in that: A spring washer (13) is sleeved on the threaded barrel (3) and located on the upper end of the fastening nut (5), and a limiting nut (14) is provided on the threaded barrel (3) and located on the upper end of the spring washer (13).

5. The mold device for reserved openings in floor slabs according to claim 2, characterized in that: One side of the gear ring (10) abuts against the inner wall of the long strip ring (8), and the other side meshes with the rack (9).

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