Water, electricity and heating reserved hole construction device

Abstract

The utility model relates to the technical field of building construction, and discloses a water, electricity and heating reserved hole construction device which comprises an installation sleeve, a rotating rod is rotationally connected into the installation sleeve, and a first circular plate is arranged outside the rotating rod and located on the inner side of the installation sleeve in a sleeved mode. A rotating rod in a mounting sleeve can be rotated through a plum hand wheel, the rotating rod drives a first circular plate to rotate, the first circular plate firstly extrudes a first sliding rod through a first sliding groove, a first arc-shaped plate is driven by a first movable rod to move, and then a second sliding rod is extruded through a second sliding groove; second movable rods are used for driving second arc-shaped plates to move, finally, four first arc-shaped plates and four second arc-shaped plates which are combined and spliced into a finished reserved sleeve are shrunk inwards, at the moment, the overall outer diameter of the device is smaller than the inner diameter of a reserved hole, taking out is convenient, and more labor is saved. And the first arc-shaped plate and the second arc-shaped plate can be unfolded outwards to be spliced into a complete reserved sleeve by reversely rotating the rotating rod.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a construction device for reserved holes for water, electricity, and heating systems. Background Technology

[0002] Construction of pre-reserved holes for water, electricity, and heating systems in residential buildings is a common construction process in civil engineering. Pre-reserved pipe holes in concrete floor slabs typically utilize pre-installed sleeves made of PVC pipes, sheet metal pipes, or pre-fabricated embedded pipe fittings. During construction, the pre-installed sleeve is placed on the formwork, and then concrete is poured onto the formwork. After the concrete is poured, the pre-installed sleeve is removed from the concrete, thus forming the pre-reserved hole.

[0003] When reserving openings, the sleeve is usually fixed to the formwork before concrete is poured. After the pouring is completed, the sleeve position forms the reserved opening. After the concrete has solidified, the sleeve can be removed to complete the construction of the reserved opening.

[0004] However, after the concrete hardens, the bonding force between the sleeve and the concrete will be relatively large, making it difficult to easily pull the sleeve out of the reserved hole. In addition to the large bonding force of the hardened concrete, the main reason is that the sleeve itself is a whole structure that cannot be separated and disassembled, which leads to the problem that the sleeve disassembly is time-consuming, laborious and inconvenient. Utility Model Content

[0005] The purpose of this utility model is to provide a construction device for reserved holes for water, electricity and heating, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A device for constructing pre-reserved holes for water, electricity, and heating systems includes an installation sleeve. A rotating rod is rotatably connected inside the installation sleeve. A first circular plate is fitted onto the outside of the rotating rod and inside the installation sleeve. The first circular plate is fixedly connected to the rotating rod. There are two first circular plates, symmetrically distributed. Four first sliding grooves are symmetrically distributed inside each first circular plate. A first sliding rod is slidably connected inside each first sliding groove. A first movable rod is fixedly connected to the bottom of the first sliding rod. A second sliding groove is formed inside the first circular plate between two adjacent first sliding grooves. A second sliding rod is slidably connected inside the second sliding groove. A second movable rod is fixedly connected to the bottom of the second sliding rod. Both the first and second movable rods penetrate the installation sleeve and extend to the outside of the installation sleeve. Both the first and second movable rods are slidably connected to the installation sleeve. A first arc-shaped plate is fixedly connected to the outside of the first movable rod, and a second arc-shaped plate is fixedly connected to the outside of the second movable rod. The second arc-shaped plate works in conjunction with the first arc-shaped plate.

[0008] Preferably, a fixing plate is fixedly connected to the outside of the rotating rod, and a bolt is threadedly connected to the inside of the fixing plate. A second circular plate is sleeved on the outside of the rotating rod and below the fixing plate. The second circular plate is fixedly connected to the mounting sleeve. The rotating rod is rotatably connected to the second circular plate. A through hole is opened inside the second circular plate, and the through hole is used in conjunction with the bolt.

[0009] Preferably, a plum blossom handwheel is fixedly connected to the top of the rotating rod.

[0010] Preferably, the corresponding two sides of the second arc-shaped plate are provided with inclined surfaces.

[0011] Preferably, a knob is fixedly connected to the top of the bolt, and grooves are provided on both sides of the knob.

[0012] Preferably, the outer wall of the first circular plate is fitted with the inner wall of the mounting sleeve.

[0013] The beneficial effects achieved by this utility model are:

[0014] The device, consisting of an installation sleeve, a rotating rod, a first circular plate, a first sliding groove, a first sliding rod, a first movable rod, a second sliding groove, a second sliding rod, a second movable rod, a first arc-shaped plate, a second arc-shaped plate, a fixing plate, bolts, a second circular plate, a through hole, a plum blossom handwheel, an inclined surface, a knob, and a groove, allows the rotating rod inside the installation sleeve to be rotated via the plum blossom handwheel. The rotating rod drives the first circular plate to rotate, and the first circular plate first presses against the first sliding rod via the first sliding groove. The first movable rod then moves the first arc-shaped plate, and subsequently presses against the second sliding rod via the second sliding groove. The second movable rod then moves the second arc-shaped plate, ultimately causing the four first arc-shaped plates and four second arc-shaped plates, which are assembled into a complete pre-reserved sleeve, to retract inward. At this point, the overall outer diameter of the device is smaller than the inner diameter of the pre-reserved opening, making it easier to remove and requiring less effort. Reversing the rotation rod allows the four first arc-shaped plates and four second arc-shaped plates to unfold outward and assemble into a complete pre-reserved sleeve. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model before shrinkage;

[0017] Figure 2 This is a schematic diagram of the shrunken structure of this utility model;

[0018] Figure 3This is a cross-sectional schematic diagram of the mounting sleeve of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first circular plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the knob of this utility model.

[0021] In the diagram: 1. Mounting sleeve; 2. Rotating rod; 3. First circular plate; 4. First sliding groove; 5. First sliding rod; 6. First movable rod; 7. Second sliding groove; 8. Second sliding rod; 9. Second movable rod; 10. First arc-shaped plate; 11. Second arc-shaped plate; 12. Fixing plate; 13. Bolt; 14. Second circular plate; 15. Through hole; 16. Plum blossom handwheel; 17. Inclined surface; 18. Knob; 19. Groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 5 This utility model provides a technical solution:

[0024] A construction device for pre-reserved holes for water, electricity, and heating includes an installation sleeve 1. A rotating rod 2 is rotatably connected inside the installation sleeve 1. A first circular plate 3 is fitted onto the outside of the rotating rod 2 and inside the installation sleeve 1. The first circular plate 3 is fixedly connected to the rotating rod 2. There are two first circular plates 3, symmetrically distributed. A first sliding groove 4 is formed inside the first circular plate 3. The first sliding groove 4 is a strip-shaped groove, inclined to a first movable rod 6. When the first circular plate 3 rotates, it can press a first sliding rod 5 through the inner wall of the first sliding groove 4, thereby driving the first movable rod 6 to move. The first movable rod 6 then drives a first arc-shaped plate 10 to move. There are four first sliding grooves 4, symmetrically distributed. A first sliding rod 5 is slidably connected inside the first sliding groove 4. The bottom of the first sliding rod 5 is fixedly connected to the first movable rod 6. A second sliding groove 7 is formed inside the first circular plate 3 between two adjacent first sliding grooves 4. Unlike the first sliding groove 4, the second sliding groove 7 consists of two parts, one of which is connected to the first sliding rod 4. In addition to the similar strip groove of the first sliding groove 4, there is also a part of arc groove. The center of this part of arc groove is the same as the center of the rotating rod 2. When the second sliding rod 8 is combined with the arc groove, the rotation of the first circular plate 3 will not squeeze the second sliding rod 8, so that the movement of the first arc plate 10 and the second arc plate 11 has a sequential order. The second sliding rod 8 is slidably connected inside the second sliding groove 7. The bottom of the second sliding rod 8 is fixedly connected to the second movable rod 9. The first movable rod 6 and the second movable rod 9 both pass through the mounting sleeve 1 and extend to the outside of the mounting sleeve 1. The first movable rod 6 and the second movable rod 9 are slidably connected to the mounting sleeve 1. The first arc plate 10 is fixedly connected to the outside of the first movable rod 6, and the second arc plate 11 is fixedly connected to the outside of the second movable rod 9. The second arc plate 11 is used in conjunction with the first arc plate 10. There are four of each of the first arc plate 10 and the second arc plate 11, which are symmetrically and crosswise. The four first arc plates 10 and the four second arc plates 11 can be spliced ​​together to form a complete reserved sleeve when they are unfolded outward.

[0025] A fixing plate 12 is fixedly connected to the outside of the rotating rod 2. A bolt 13 is threadedly connected to the inside of the fixing plate 12. A second circular plate 14 is sleeved on the outside of the rotating rod 2 and below the fixing plate 12. The second circular plate 14 is fixedly connected to the mounting sleeve 1. The rotating rod 2 is rotatably connected to the second circular plate 14. A through hole 15 is opened inside the second circular plate 14. The through hole 15 is used in conjunction with the bolt 13. Tighten the bolt 13 until it engages with the through hole 15 to limit and fix the first arc plate 10 and the second arc plate 11 that are assembled into a complete pre-reserved sleeve. A plum blossom handwheel 16 is fixedly connected to the top of the rotating rod 2, making it easy to rotate the rotating rod 2; the corresponding two sides of the second arc plate 11 are provided with inclined surfaces 17, which prevent the first arc plate 10 and the second arc plate 11 from colliding when they are joined; a knob 18 is fixedly connected to the top of the bolt 13, and grooves 19 are provided on the corresponding two sides of the knob 18, which make it easy for the user to turn the knob 18 and prevent it from slipping out of the hand; the outer wall of the first circular plate 3 fits against the inner wall of the mounting sleeve 1 to ensure stability.

[0026] Specifically, when using this utility model, in the initial state of the device, the four first arc-shaped plates 10 and the four second arc-shaped plates 11 are already assembled together and placed at the concrete pouring position. After the concrete is poured and solidified, the bolts 13 are loosened by the knob 18 until the bolts 13 separate from the through holes 15 on the second circular plate 14. At this time, the rotating rod 2 can be rotated in the opposite direction by the plum blossom handwheel 16. The rotating rod 2 then drives the first circular plate 3 to rotate. The first circular plate 3 directly presses the first sliding rod 5 through the first sliding groove 4. The first sliding rod 5, which is pressed, pushes the first movable rod 6 to slide inward toward the inner side of the mounting sleeve 1, thereby causing the first arc-shaped plate 10 to contract inward first, so that the first arc-shaped plate 10 separates from the second arc-shaped plate 11 and detaches from the inner wall of the reserved opening. During this process, the second slide rod 8 remains within the arc-shaped groove of the second slide groove 7. Therefore, the second slide rod 8, the second movable rod 9, and the second arc-shaped plate 11 will not move at this time. As the operator continues to rotate the rotating rod 2, the second slide rod 8 will enter the strip-shaped groove of the second slide groove 7. At this time, the second slide groove 7 will start to squeeze the second slide rod 8 in the same way that the first slide groove 4 squeezes the first slide rod 5. This causes the second slide rod 8 to drive the second arc-shaped plate 11 to retract inward through the second movable rod 9. As long as the second arc-shaped plate 11 also separates from the inner wall of the reserved opening, the entire device can be removed from the reserved opening. This is very convenient and labor-saving. The first arc-shaped plate 10 and the second arc-shaped plate 11 can be reassembled by rotating the rotating rod 2 in the forward direction.

[0027] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0028] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction device for reserved holes for water, electricity, and heating systems, comprising an installation sleeve (1), characterized in that: The mounting sleeve (1) is rotatably connected to a rotating rod (2). A first circular plate (3) is fitted around the rotating rod (2) and inside the mounting sleeve (1). The first circular plate (3) is fixedly connected to the rotating rod (2). There are two first circular plates (3), symmetrically distributed. A first sliding groove (4) is formed inside each first circular plate (3). There are four first sliding grooves (4), symmetrically distributed. A first sliding rod (5) is slidably connected inside each first sliding groove (4). A first movable rod (6) is fixedly connected to the bottom of the first sliding rod (5). The first circular plate (3) is slidably connected to the rotating rod (2) and inside the mounting sleeve (1). A second slide groove (7) is provided between two adjacent first slide grooves (4). A second slide rod (8) is slidably connected inside the second slide groove (7). A second movable rod (9) is fixedly connected to the bottom of the second slide rod (8). The first movable rod (6) and the second movable rod (9) both pass through the mounting sleeve (1) and extend to the outside of the mounting sleeve (1). The first movable rod (6) and the second movable rod (9) are slidably connected to the mounting sleeve (1). A first arc plate (10) is fixedly connected to the outside of the first movable rod (6). A second arc plate (11) is fixedly connected to the outside of the second movable rod (9). The second arc plate (11) is used in conjunction with the first arc plate (10).

2. The construction device for reserved holes for water, electricity, and heating according to claim 1, characterized in that: The rotating rod (2) is fixedly connected to a fixing plate (12) on the outside. The fixing plate (12) is threaded with a bolt (13) inside. A second circular plate (14) is sleeved on the outside of the rotating rod (2) and below the fixing plate (12). The second circular plate (14) is fixedly connected to the mounting sleeve (1). The rotating rod (2) is rotatably connected to the second circular plate (14). A through hole (15) is opened inside the second circular plate (14). The through hole (15) is used in conjunction with the bolt (13).

3. The construction device for reserved holes for water, electricity, and heating according to claim 1, characterized in that: A plum blossom handwheel (16) is fixedly connected to the top of the rotating rod (2).

4. The construction device for reserved holes for water, electricity, and heating according to claim 1, characterized in that: The second arc-shaped plate (11) has inclined surfaces (17) on both sides.

5. The construction device for reserved holes for water, electricity, and heating according to claim 2, characterized in that: A knob (18) is fixedly connected to the top of the bolt (13), and grooves (19) are provided on both sides of the knob (18).

6. The construction device for reserved holes for water, electricity, and heating according to claim 1, characterized in that: The outer wall of the first circular plate (3) is in contact with the inner wall of the mounting sleeve (1).

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