Construction mold and construction structure of equipment foundation anchor bolt preformed hole

Abstract

The utility model discloses a construction mold and a construction structure of an equipment foundation anchor bolt preformed hole. The construction mold comprises a reinforcement cage and an air bag, an inner cavity surrounded by the reinforcement cage is cylindrical, and the size and height of the cross section of the reinforcement cage are matched with the corresponding size of the preformed hole; an air nozzle is arranged on the air bag, and the air bag is made of a plastic material; the air bag is arranged in the reinforcement cage, the air bag is clamped and fixed by the reinforcement cage after being inflated, and the space needed by the preformed hole is formed by the space jointly surrounded by the reinforcement cage and the air bag. The construction mold can solve the technical problem that the preformed hole of the foundation bolt is easy to damage.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a construction mould and a construction structure for reserved holes of anchor bolts of equipment foundation. Background Art

[0002] With the rapid development of my country's national economy, the installation of various large-scale new industrial equipment and large steel structure factories are increasing. The anchor bolts of various foundations (especially equipment foundations) can be constructed by pre-prepared anchor bolts and reserved anchor bolt holes. The pre-embedded foundation bolts have many specifications, large quantities and high construction precision requirements. They bear the weight of the entire equipment and the dynamic loads and accidental loads during operation, which plays a very important role in the life and operation safety of the equipment. Once the pre-embedded anchor bolts have a large deviation, it will directly affect the normal installation and commissioning of various equipment. At the same time, it is quite difficult to deal with unqualified foundations. Therefore, most large-scale equipment foundations still adopt the construction method of reserved anchor bolt holes. After the equipment is in place, the anchor bolts are installed, and then the secondary concrete pouring is carried out.

[0003] When constructing reserved anchor bolt holes, inner molds need to be made and installed for the reserved holes. Since the reserved holes are generally elongated holes, wooden molds or metal molds are currently commonly used. After pouring concrete, the molds are difficult to remove due to the clamping and friction of the foundation concrete on the inner molds. In the end, the inner molds often have to be destroyed and forcibly removed, resulting in partial damage to the reserved holes, which affects the strength and visual quality of the equipment foundation and may also reduce the pull-out resistance of the equipment anchor bolts, wasting both labor and materials. Utility Model Content

[0004] In view of the current technical problems, the utility model aims to provide a construction mold and a construction structure for reserved holes for anchor bolts of equipment foundations, wherein the construction mold can solve the technical problem that the reserved holes for anchor bolts are easily damaged.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A construction mold for reserved holes for anchor bolts of equipment foundation, the structural features of which are: comprising a steel cage and an air bag; the inner cavity surrounded by the steel cage is cylindrical, and the cross-sectional size and height of the steel cage match the corresponding size of the reserved hole; the air bag is provided with an air nozzle, and the air bag is made of plastic material; the air bag is arranged in the steel cage, and is clamped and fixed by the steel cage after being inflated, and the space surrounded by the steel cage and the air bag together constitutes the space required for the reserved hole.

[0007] The airbag can be made of PVC or other similar plastic mesh bags. The airbag can be inflated by the air nozzle to form a solid with certain strength and rigidity, and the airbag can be easily taken out from the steel cage after being deflated. When the construction mold of the present application is used, the steel cage is first fixed, the uninflated airbag is placed in the steel cage, the airbag is inflated by a small air pump, and the airbag is clamped and fixed by the steel cage after inflation. The inflation pressure of the airbag is based on the airbag being able to resist the concrete side pressure, which is roughly equivalent to the tire pressure of a bicycle tire. Then, the foundation concrete is poured, and after the concrete side mold demoulding conditions are reached, the airbag is removed after the air nozzle is pressed to discharge the gas in the airbag. The construction mold of the utility model is simple in structure, stable and reliable. The construction mold of the utility model is easy to take out after the airbag is deflated, and the reserved hole will not be damaged, and the airbag can be reused after being taken out and cleaned. The construction mold of the utility model can strengthen the concrete on the side wall of the reserved hole, and can also have a restraining effect on the secondary pouring of concrete in the reserved hole, which is conducive to improving the pull-out resistance of the foundation anchor bolts.

[0008] Preferably, the cross-sectional shape of the steel cage is a square, the side length of the steel cage is equal to the side length of the reserved hole, and the height of the steel cage is equal to the depth of the reserved hole.

[0009] Preferably, the circumference of the cross section of the airbag after inflation is greater than or equal to four times the side length of the reserved hole.

[0010] Preferably, after the airbag is inflated, the bottom of the airbag is flush with the bottom of the steel cage, the side wall of the airbag is flush with the side wall of the steel cage, and the height of the airbag is greater than the depth of the reserved hole.

[0011] Specifically, the air nozzle is arranged at the end of the airbag.

[0012] Specifically, the steel cage is welded by a plurality of vertical bars and stirrups. The vertical bars can be 4n steel bars, and the stirrups are arranged at intervals along the length direction of the vertical bars.

[0013] Based on the same inventive concept, the utility model also provides a construction structure for reserved holes for equipment foundation anchor bolts, including foundation concrete and a plurality of construction molds for reserved holes for equipment foundation anchor bolts as described above, the construction mold being arranged at the embedded position of the anchor bolts in the foundation concrete, and the steel cage and the foundation concrete forming a whole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The construction mold for the reserved holes of the equipment foundation anchor bolts of the utility model has a simple structure and is stable and reliable.

[0016] 2. The construction mold for the reserved holes of the equipment foundation anchor bolts of the utility model is easy to take out after the airbag is deflated, without damaging the reserved holes, and the airbag can be reused after being taken out and cleaned.

[0017] 3. The construction mold for the equipment foundation anchor bolt reserved holes of the utility model can strengthen the concrete on the side walls of the reserved holes and can also constrain the secondary pouring of concrete in the reserved holes, which is beneficial to improving the tensile strength of the foundation anchor bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of a construction mold for pre-reserved holes for anchor bolts of the equipment foundation of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the airbag.

[0021] In the figure:

[0022] 1—rebar cage; 101—vertical reinforcement; 102—hoops; 2—air bag; 3—air nozzle. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0024] like Figure 1 As shown, the construction mold for the reserved holes of the equipment foundation anchor bolts in this embodiment includes a steel cage 1 and an air bag 2. Figure 2 As shown, the steel cage 1 is welded by eight vertical bars 101 and six stirrups. The inner cavity surrounded by the steel cage 1 is cylindrical, the side length of the column is equal to the side length of the designed reserved hole, and the height of the column is equal to the depth of the reserved hole. In this embodiment, the side length of the steel cage 1 is 160*160mm and the height is 500mm. Figure 3 As shown, the airbag 2 is a bag made of PVC or other similar plastic mesh cloth, with an air nozzle 3 on the top. The airbag 2 can be inflated from the air nozzle 3 to form a solid with certain strength and rigidity, and together with the steel cage 1, it forms a reserved space for the reserved hole. The cross-sectional perimeter of the airbag 2 after inflation is four times the side length of the reserved hole, and the height of the airbag 2 is greater than the depth of the hole. In this embodiment, the diameter of the airbag 2 is

[0025] The steel cage 1 is fixed at the designated position in the concrete foundation to be poured. After the construction of the equipment foundation steel bars and formwork is completed, the steel cage 1 is installed at the designed installation position of the equipment anchor bolts and fixed in the foundation. A steel cage 1 is set for each anchor bolt to be installed. First, put the airbag 2 into the installed steel cage 1. The bottom of the airbag 2 is flush with the steel cage 1, and the top is higher than the top plane of the foundation. Then use a small air pump to inflate the airbag 2. The air pressure is based on the ability of the airbag 2 to resist the concrete side pressure, which is roughly equivalent to the tire pressure of a bicycle tire. After inflation, the airbag 2 is fixed due to the clamping effect of the steel cage 1. After all the airbags 2 are installed and inflated and fixed, after checking the shape and position dimensions of the foundation, organize concealed acceptance, and then pour the foundation concrete. After the concrete side mold demoulding conditions are met, press the air nozzle 3 to discharge the gas in the airbag 2, and the airbag 2 can be easily taken out from the reserved hole of the foundation. After the foundation concrete is poured, the steel cage 1 and the foundation concrete form a whole, which strengthens the concrete on the side wall of the reserved hole, which is beneficial to improve the tensile strength of the foundation bolts. The airbag 2 is easy to remove and will not damage the reserved hole for the foundation anchor bolts. The airbag 2 can be reused after being removed and cleaned.

[0026] The construction mold for the reserved holes for the equipment foundation anchor bolts of this embodiment is easy to install, and the steel cage 1 is fixed by connecting to other positioning systems, which is stable and reliable. The uninflated airbag 2 is installed in the steel cage 1, and after the airbag 2 is inflated, it forms the space required for the reserved hole with the steel cage 1. Due to the clamping effect of the steel cage 1 on the airbag 2, the airbag 2 will not float up. After the airbag 2 is deflated and taken out, it will not damage the reserved hole and can be reused. The steel cage 1 remains in the foundation concrete, which has a restraining effect on the secondary pouring of concrete in the reserved hole, which is beneficial to improve the pull-out resistance of the anchor bolts.

[0027] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A construction mold for reserved holes for equipment foundation anchor bolts, characterized by: It comprises a steel cage (1) and an air bag (2); The inner cavity surrounded by the steel cage (1) is cylindrical, and the cross-sectional dimensions and height of the steel cage (1) match the corresponding dimensions of the reserved hole; The air bag (2) is provided with an air nozzle (3), and the air bag (2) is made of plastic material; The airbag (2) is arranged in the steel cage (1); after being inflated, the airbag (2) is clamped and fixed by the steel cage (1); the space jointly surrounded by the steel cage (1) and the airbag (2) constitutes the space required for the reserved hole.

2. The construction mold for reserved holes for equipment foundation anchor bolts according to claim 1 is characterized by: The cross-section of the steel cage (1) is a square, the side length of the steel cage (1) is equal to the side length of the reserved hole, and the height of the steel cage (1) is equal to the depth of the reserved hole.

3. The construction mold for the reserved holes for the equipment foundation anchor bolts according to claim 2 is characterized by: The circumference of the cross section of the airbag (2) after inflation is greater than or equal to four times the side length of the reserved hole.

4. The construction mold for the reserved holes for the equipment foundation anchor bolts according to claim 1 is characterized by: After the airbag (2) is inflated, the bottom of the airbag (2) is flush with the bottom of the steel cage (1), the side wall of the airbag (2) is flush with the side wall of the steel cage (1), and the height of the airbag (2) is greater than the depth of the reserved hole.

5. The construction mold for the reserved holes for the equipment foundation anchor bolts according to claim 1 is characterized by: The air nozzle (3) is arranged at the end of the airbag (2).

6. The construction mold for reserved holes for equipment foundation anchor bolts according to claim 1, characterized in that: The steel cage (1) is formed by welding a plurality of vertical bars (101) and stirrups (102).

7. A construction structure for reserved holes for anchor bolts of equipment foundation, comprising foundation concrete, characterized in that: It also comprises a plurality of construction moulds for reserved holes for equipment foundation anchor bolts as described in any one of claims 1 to 6, the construction moulds being arranged at the pre-embedded locations of the anchor bolts in the foundation concrete, and the steel cage (1) forming an integral body with the foundation concrete.

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