Civil air defense reinforced concrete protective airtight door leaf formwork

Abstract

The utility model relates to the technical field of concrete protective doors in civil air defense engineering, and particularly discloses a civil air defense reinforced concrete protective airtight door leaf formwork which comprises a base and a steel formwork, the base is made of peripheral channel steel and middle criss-cross I-shaped steel, and the steel formwork is fixedly arranged above the base and is a whole steel plate; a hanging ring is further arranged on the side face of the base so that the base and the steel formwork can be conveniently hoisted, a positioning block is further arranged on the steel formwork and used for positioning a concrete door leaf in the pouring process, a pressing plate is further arranged on the base and used for fixing the concrete door leaf in the pouring process, and the door leaf can be conveniently detached after pouring. When the formwork is used for pouring a concrete door leaf, the steel formwork is made of a whole plate, and the support of the base can ensure that the steel formwork does not deform in the machining and pouring processes, so that the problem of poor flatness of the steel formwork caused by welding is effectively avoided, and good flatness and smooth surface of the poured concrete door leaf can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete protective doors in civil air defense projects, in particular to a civil air defense reinforced concrete protective closed door leaf template. Background Art

[0002] Civil defense doors are doors at the entrances and exits of people's defense projects. There are many types of civil defense equipment, including ordinary single-leaf and double-leaf protective closed doors and closed doors, single-leaf and double-leaf protective closed doors and closed doors with movable thresholds, etc. They are mainly used to provide protection during natural disasters such as war and earthquakes. They are usually made of concrete and steel materials. The size is determined according to actual needs. The width is generally around 800mm to 2000mm and the height is 2000mm.

[0003] Generally, civil air defense doors are mainly composed of two parts: the door frame and the door leaf. The door frame is an integrally formed angle steel, while the door leaf is made of a steel mesh and concrete. Sealing strips are usually installed on the sealed door leaf to improve its airtightness, and hinges and door locks are installed to realize the opening and closing and locking of the door leaf. Therefore, the casting template of the door leaf needs to be processed with grooves or protrusions corresponding to accessories such as sealing strips, hinges and door locks. The existing casting template of the door leaf is made of welded steel template. The large number of welding points and improper weld treatment will cause the template to deform due to heat, resulting in poor flatness and rough surface. The cast concrete door leaf has the disadvantage of poor flatness, and the uneven door leaf will reduce its sealing effect. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the technical problem solved by the present invention is to provide a civil air defense reinforced concrete protective closed door leaf template, which solves the problem that the existing door leaf template has poor flatness and rough surface, resulting in poor flatness of the cast concrete door leaf.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is: a civil air defense reinforced concrete protective closed door leaf template, including a base and a steel template. The base is made of channel steels on all sides and I-beams crisscrossed in the middle. The steel template is fixed above the base. The steel template is a whole piece of steel plate made by milling to form a boss or groove structure corresponding to the accessory mounting groove or protrusion on the door leaf.

[0006] The beneficial effects of this solution are: for the problem that the existing welded formwork is easy to deform and leads to poor flatness of the formwork, the steel formwork of the utility model is a whole steel plate fixed on the top of the base, the base is surrounded by channel steel, and the middle of the base is made of criss-cross I-beams, so that the base provides sufficient support for the steel formwork, and large gantry milling equipment and other equipment are used to process the boss and other structures corresponding to the door leaf sealing strip installation groove on the steel formwork, and the formwork is used to cast the concrete door leaf. Since the steel formwork is made of a whole plate, the support of the base can ensure that the steel formwork will not deform during the processing and casting process, effectively avoiding the problem of poor flatness of the steel formwork caused by welding, and can ensure that the cast concrete door leaf has good flatness and a smooth surface.

[0007] Furthermore, a lifting ring is provided on the side of the base to facilitate lifting the base and the steel formwork.

[0008] Furthermore, a positioning block is provided on the steel formwork for positioning the concrete door leaf during the pouring process.

[0009] Furthermore, a pressure plate is provided on the base, and bolts are provided on the pressure plate for fixing the concrete door leaf during the pouring process, so as to facilitate the removal of the door leaf after pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the overall structure of the civil air defense reinforced concrete protective closed door template of the present invention;

[0011] Figure 2 This is a front view of the civil air defense reinforced concrete protective closed door template of the utility model;

[0012] Figure 3 A top view of the civil air defense reinforced concrete protective closed door leaf template of the present invention;

[0013] Figure 4 A top view of the base of the civil air defense reinforced concrete protective closed door template of the present invention;

[0014] In the figure: 1-base, 2-steel formwork, 3-lifting ring, 4-positioning block, 5-pressing plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Implementation example Figures 1 to 2As shown: A civil air defense reinforced concrete protective closed door leaf template, including a base 1 and a steel template 2. The base 1 is made of channel steels on all sides and I-beams crisscrossing in the middle. The steel template 2 is fixedly set above the base 1. The steel template 2 is a whole steel plate. The base 1 provides support for the steel template 2. The steel template 2 is then processed using large gantry CNC milling equipment to ensure the surface flatness and roughness of the steel template 2 when pouring the concrete door leaf.

[0017] A lifting ring 3 is provided on the side of the base 1 to facilitate the lifting of the base 1 and the steel formwork 2; a positioning block 4 is provided on the steel formwork 2 to position the concrete door leaf during the pouring process; a pressing plate 5 is provided on the base 1, and bolts are provided on the pressing plate to fix the concrete door leaf during the pouring process, so as to facilitate the removal of the door leaf after pouring.

[0018] The specific implementation process is as follows: the steel template 2 is fixed to the base 1 by welding or bolts. In order to avoid deformation during welding, spot welding can be used. The position of welding points is minimized under the premise of ensuring that the steel template 2 is stably fixed on the base 1. When fixing with bolts, it is only necessary to drill holes around the base 1 and the steel template 2, which will not affect the flatness of the template. The base 1 and the steel template 2 are hoisted to the workbench of the large gantry milling machine through the lifting ring 3, and the boss and other structures corresponding to the door sash sealing strip installation groove are processed on the steel template 2. The processing technology requires the surface of the steel template 2 to be rough. The roughness is Ra0.8-1.6. The template is used to cast the concrete door leaf. During casting, the door leaf is positioned by the positioning block 4, and the bolts on the pressure plate 5 are used to press the door leaf around. A layer of mold release agent is applied on the steel template 2 to facilitate the removal of the door leaf after casting. After installing the steel frame inside the door leaf, concrete is cast. After solidification, the pressure plate 5 can be loosened to remove the concrete door leaf. Since the steel template 2 is a whole plate, the support of the base 1 can ensure that the steel template 2 will not be deformed during processing and casting, and the cast concrete door leaf can be guaranteed to be flat and smooth.

[0019] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A reinforced concrete protective closed door leaf template for civil air defense, comprising a base and a steel template, characterized in that: The base is made of channel steels on all sides and I-beams crisscrossing in the middle. The steel template is fixed above the base. The steel template is made of a whole steel plate with a boss or groove structure milled on it.

2. The civil air defense reinforced concrete protective closed door template according to claim 1 is characterized by: A hanging ring is provided on the side of the base.

3. The civil air defense reinforced concrete protective closed door template according to claim 1 is characterized by: A positioning block is provided on the steel template.

4. The civil air defense reinforced concrete protective closed door template according to claim 1 is characterized by: A pressing plate is provided on the base, and bolts are provided on the pressing plate.

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