Internal mold for reserved bolt hole

Abstract

The utility model belongs to the technical field of industrial infrastructure manufacturing, and particularly relates to an inner die for a reserved bolt hole. Comprising a supporting framework, a fixing mold and a supporting device, the supporting framework is formed by connecting a connecting rod and a fixing support, the connecting rod can be fixed to the supporting device to form a whole, and the fixing mold is wound on the outer side of the supporting framework in a rotating mode with the supporting framework as the center and fixedly connected to the supporting device through an adhesive tape or glue. The utility model has the advantages and positive effects that the reserved bolt hole inner mold can be rolled on site, the operation is convenient and quick, and the inner mold can be detached after the foundation construction is completed and can be reused after shaping; meanwhile, the roughness of the inner wall of the bolt hole can be guaranteed, the scabbling procedure is omitted, concrete poured into the hole is fully combined with a foundation, and the stress requirement of the equipment foundation bolt is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial infrastructure equipment manufacturing, and more specifically, particularly relates to an inner die for reserved bolt holes. Background Art

[0002] In the industrial field, a large number of electromechanical equipment are distributed on the production lines of large casting, rolling and machining workshops. These equipment have different functions and the foundation structure below is complex, which requires a large number of direct-buried bolts or bolt holes to be reserved when pouring foundation concrete. In the construction of some key equipment foundations, the method of reserving bolt holes is mainly used to avoid deviations caused by direct burying of larger diameter anchor bolts.

[0003] At present, the commonly used methods for reserving bolt holes in the foundation include wooden box embedding method, plastic pipe embedding method, corrugated pipe embedding method, etc. Among them, the method of embedding wooden box and plastic pipe is low in cost, but it is difficult to remove it from the foundation later. In many cases, it cannot be removed cleanly, and it is not easy to chisel the inside of the bolt hole, and the side wall roughness is not enough. Directly burying the corrugated pipe can be used as a reserved bolt hole without requiring removal. However, some designs or equipment installations require the removal of the corrugated pipe, and do not allow the grouting concrete in the hole to be separated from the original foundation concrete by a layer of iron sheet, which fails to fully combine and affects the force of the anchor bolts of large equipment. If steel sleeves and T-head bolts are used, the requirements can be met, but the cost is too high. It is only suitable for some special equipment and is not suitable for the construction of equipment foundations with a large number of bolt holes. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a technical field of industrial infrastructure equipment manufacturing, and more specifically, especially relates to an inner mold for reserved bolt holes.

[0005] The technical solution adopted by the utility model is: an inner mold for reserved bolt holes, characterized in that it comprises:

[0006] A supporting frame, comprising a connecting rod and a fixing bracket, wherein the connecting rod and the fixing bracket are detachably connected; and

[0007] A fixed mold, wherein the fixed mold rotates along the support frame and is wrapped into a cylindrical tube; and

[0008] A supporting device is arranged on one side of the fixed mold.

[0009] Furthermore, the fixing bracket includes at least two fixing rods, and the fixing rods are cross-connected and detachably connected.

[0010] Furthermore, the fixing rod is provided with a connecting hole, and the connecting rod can pass through the connecting hole.

[0011] Furthermore, there are no less than two fixing brackets that can be fixed on the connecting rod.

[0012] Furthermore, the support device is configured to be disc-shaped, and a fixing buckle is provided at the center thereof, and the fixing buckle can be connected and fixed to the connecting rod so that the connecting rod is vertically connected to the support device.

[0013] Furthermore, the fixed mold includes a rectangular long strip of iron sheet, which can be rotated along the supporting frame to form a cylindrical tube body.

[0014] Furthermore, a corrugated strip thread is provided on the opposite side of the rectangular long iron sheet close to the side of the supporting frame.

[0015] Furthermore, the joints of the rectangular long iron sheet after rotation are fixed with adhesive tape.

[0016] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical solution, the inner mold of the reserved bolt hole can be rolled on site, the operation is convenient and quick, and the inner mold can be removed after the foundation construction is completed, and can be reused after shaping. At the same time, the roughness of the inner wall of the bolt hole can be guaranteed, the roughening process is omitted, and the concrete poured in the hole is fully combined with the foundation, meeting the force requirements of the equipment anchor bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the fixing rod structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the fixed bracket structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the support frame structure of an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the iron sheet structure of an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the iron sheet rotation application of the embodiment of the utility model;

[0022] Figure 6 It is a side view of the base of an embodiment of the utility model;

[0023] Figure 7 It is a top view of the base of an embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the inner mold structure of an embodiment of the utility model;

[0025] In the figure:

[0026] 1. Fixing rod 2. Connecting hole 3. Connecting rod

[0027] 4. Iron sheet 5. Corrugated strip thread 6. Inside of iron sheet

[0028] 7. Base 8. Center connection protrusion 9. Fixing protrusion

[0029] 10. Fixing buckle DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of the technology of the known structure is omitted to avoid unnecessary confusion of the concept of the utility model.

[0031] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0032] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0033] Figure 8 The schematic diagram of the structure of an embodiment of the utility model is shown, and the structure of this embodiment is specifically shown. This embodiment relates to a reserved bolt hole inner mold. According to the inner diameter of the reserved bolt hole, multiple cross-shaped plane bodies are made of scrap steel bars, and then four steel bars of the same diameter are used to connect the multiple cross-shaped plane bodies into a cylindrical skeleton, and the length is greater than the depth of the bolt hole. Corrugated strips of soft galvanized iron are spirally wound along the cylindrical skeleton to form a tube body. After fixing the inner sides of both ends with transparent tape, the cylindrical skeleton is taken out. When pre-buried in the foundation construction, a circular fiber cement base with ribs is plugged and sealed under the rolled corrugated spiral tube body, and a circular plastic cover plate is covered on the top. After the foundation concrete is poured, the plastic cover plate is removed, and after the inner tape on the top of the corrugated spiral tube body is removed, the end of the corrugated strip is pulled to pull out the corrugated strip inner mold, and the fiber cement board is left in the foundation. The bolt hole reservation is completed.

[0034] A reserved bolt hole inner mold, such as Figure 1-8 As shown, it includes a support frame, a fixed mold and a support device, wherein the support frame includes a fixed rod 1, a connecting hole 2 and a connecting rod 3, wherein the fixed rod 1 and the connecting hole 2 are as shown in FIG. Figure 1 As shown, in this embodiment, a circular hole-shaped connecting hole 2 is provided at the center of the rod body of the fixing rod 1, and the opening size of the connecting hole 2 is large enough for the fixing rod 1 to pass through, and two fixing rods 1 are vertically crossed through the connecting hole 2 to form a cross-shaped fixing bracket, as shown in FIG. Figure 2 As shown, in this embodiment, there are at least two fixed brackets, and the center of the fixed bracket can be connected by a connecting rod 3, such as Figure 3 The use of connecting rods 3 to connect various fixed brackets is called a supporting skeleton.

[0035] The fixed mold includes an iron sheet 4, such as Figure 4 , 5 As shown, the iron sheet 4 in this embodiment is configured as a rectangular long strip of iron sheet, and the two sides of the iron sheet 4 are respectively the outside and the inside, wherein the inside 6 of the iron sheet is shown in the figure, and the other side is the outside of the iron sheet, and the outside is configured as a corrugated strip thread 5. There are no less than two iron sheets 4, which can be rotated around the outside of the supporting frame as the basis to form a cylindrical tube body, and the iron sheet 4 is fixed by glue or tape after rotating and surrounding.

[0036] Support device such as Figure 6 , 7 As shown, it includes a base 7, a central connecting protrusion 8, a fixing protrusion 9 and a fixing buckle 10. In this embodiment, the base 7 is set in a disc shape, the central connecting protrusion 8 is used to connect with the connecting rod 3, and the connecting rod 3 is fixed by the fixing buckle 10 set on the central connecting protrusion 8, so that the connecting rod 3 and the base 7 are fixed as a whole. The base 7 is provided with fixing protrusions 9 around it, which are used to play the role of fixing the outer ring when the iron sheet 4 rotates. Figure 8 shown.

[0037] In some feasible embodiments, waste steel bars are used to make multiple cross-shaped plane bodies, which are then connected into a cylindrical skeleton using four steel bars of the same diameter. The cross-sectional dimensions of the skeleton are adjusted according to the inner diameter of the reserved bolt holes, and the length is greater than the depth of the bolt holes.

[0038] Use corrugated strips of soft galvanized iron to spirally wrap around the cylindrical frame to form a tube body. After fixing the inner sides of both ends with transparent tape, take out the cylindrical frame.

[0039] When pre-buried in the foundation construction, a circular fiber cement base with ribs is plugged and sealed under the rolled corrugated spiral pipe body. The ribs and the base are made of the same material and are made into one piece. The top is covered with a circular plastic sealing plate.

[0040] The corrugated spiral pipe body with upper and lower sealed ends is fixed in the foundation without pouring concrete.

[0041] After the foundation concrete is poured, remove the plastic cover and the inner tape above the corrugated spiral pipe body.

[0042] Hold the end of the corrugated strip inside the bolt hole and pull out the inner mold of the corrugated strip with force. It can be reused after shaping.

[0043] The fiber cement board below the bolt hole remains in the foundation, and the formed bolt hole is covered with the removed plastic cover to prevent debris from entering the hole.

[0044] The advantages and positive effects of the utility model are as follows: due to the adoption of the above technical solution, the inner mold of the reserved bolt hole can be rolled on site, the operation is convenient and quick, and the inner mold can be removed after the foundation construction is completed, and can be reused after shaping. At the same time, the roughness of the inner wall of the bolt hole can be guaranteed, the roughening process is omitted, and the concrete poured in the hole is fully combined with the foundation, meeting the force requirements of the equipment anchor bolts.

[0045] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. An inner mold for reserved bolt holes, characterized in that: include: A supporting frame, comprising a fixing rod, a connecting hole and a connecting rod, wherein two fixing rods vertically cross each other through the connecting hole to form a cross-shaped fixing bracket, and the connecting rod is detachably connected to the fixing bracket; and A fixed mold, the fixed mold rotates along the support frame and wraps into a cylindrical tube; and A supporting device is arranged on one side of the fixed mold.

2. The inner mold for reserved bolt holes according to claim 1, characterized in that: The fixing bracket includes at least two fixing rods, and the fixing rods are cross-connected and detachably connected.

3. The inner mold for reserved bolt holes according to claim 2, characterized in that: The fixing rod is provided with a connecting hole, and the connecting rod can pass through the connecting hole.

4. The inner mold for reserved bolt holes according to claim 3 is characterized in that: There are no less than two fixing brackets that can be fixed on the connecting rod.

5. The inner mold for reserved bolt holes according to any one of claims 1 to 4, characterized in that: The support device is configured in a disc shape, and a fixing buckle is provided at the center thereof. The fixing buckle can connect and fix the connecting rod so that the connecting rod is vertically connected to the support device.

6. The inner mold for reserved bolt holes according to claim 1, characterized in that: The fixed mold comprises a rectangular long iron sheet, which can be rotated along the supporting frame to form a cylindrical tube body.

7. The inner mold for reserved bolt holes according to claim 6, characterized in that: The side of the rectangular long iron sheet opposite to the side of the support frame is provided with a corrugated strip thread.

8. The inner mold for reserved bolt holes according to claim 6, characterized in that: The joints of the rectangular long iron sheet after rotation are fixed with adhesive tape.

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