Reusable combined template for assisting civil air defense door interface component to be pre-buried

Abstract

The utility model relates to the field of civil air defense doors, and particularly discloses a reusable combined template for assisting civil air defense door interface component pre-burying, which comprises a doorsill template, an upper frame U-shaped template and two vertically arranged frame U-shaped templates, precise positioning and fixing of the embedded pipe fitting are achieved through cooperation of the threshold positioning screw rod, the position correcting insertion pipe, the locking screw rod and the locking nut, and the connection reliability and operation convenience are improved through a unique locking structure. The civil air defense door connector component pre-embedding device achieves the technical effects that the civil air defense door connector component pre-embedding precision and the civil air defense door opening reserving precision are improved, the construction efficiency is improved, and the structural stability is ensured.

Description

Technical Field

[0001] This application relates to the field of air defense doors, and in particular to a reusable combined template for pre-embedding auxiliary air defense door interface components. Background Technology

[0002] Currently, air-raid shelter doors are key protective equipment for the openings of air-raid shelter projects, playing a vital role in ensuring the safety of personnel and property such as materials and vehicles. In the field of modern air-raid shelter construction, the installation technology of air-raid shelter doors is receiving increasing attention, especially in the process of pre-embedding interface components before concrete pouring, where the precision directly affects the safety and stability of subsequent structural connections. To ensure the reliable performance of air-raid shelter doors under various working conditions, relevant national standards have imposed strict requirements on the dimensional deviation of pre-embedded interface components, typically requiring control within 3mm. This high standard has promoted the continuous development of pre-embedded formwork technology, providing more precise and reliable solutions for building construction.

[0003] In related technologies, before pouring concrete, the embedded interface components are accurately placed in their designed positions and then fixed using a formwork support system. For example, wooden or steel pipe supports are placed around the components to clamp and fix them to the formwork, preventing displacement during concrete pouring. Simultaneously, it is essential to ensure that the formwork itself possesses sufficient strength, rigidity, and stability to guarantee the positional accuracy of the embedded components.

[0004] The aforementioned technologies have the following drawbacks: simple wooden or steel pipe supports have limited support strength, and the interface components of the air-raid shelter door are prone to displacement due to external forces during concrete pouring. Utility Model Content

[0005] In order to improve the accuracy of pre-embedding the interface components of air-raid shelter doors, this application provides a reusable combined template to assist in the pre-embedding of the interface components of air-raid shelter doors.

[0006] The technical solution provided in this application for a reusable combined template for pre-embedded auxiliary air defense door interface components is as follows:

[0007] A reusable combined template for pre-embedding auxiliary air defense door interface components includes a threshold template, an upper frame U-shaped template, and two vertically arranged side frame U-shaped templates. The threshold template is provided with multiple threshold positioning screws that are vertically rotatable.

[0008] The two U-shaped frame templates are respectively located at both ends of the length direction of the bottom mold body;

[0009] In the slot width direction of the U-shaped template, the U-shaped template is provided with a plurality of locking through holes, and a locking screw is provided on the inner side of each locking through hole; both ends of the locking screw are screwed with locking nuts located outside the U-shaped template.

[0010] Both ends of the locking screw are provided with a plurality of axially distributed toothed grooves; the locking nut is provided with a movable rack rotatably connected about the axis of the locking nut, and the movable rack is also movably connected to the locking nut in the radial direction of the locking nut, and the movable rack is provided with a plurality of teeth for engaging part of the toothed grooves;

[0011] The upper frame U-shaped template is located above the threshold template and installed between the two side frame U-shaped templates, and also has the same structure as the side frame U-shaped template;

[0012] The air-raid shelter door interface component has multiple sill embedded steel bars, multiple frame embedded pipes, and multiple upper frame embedded pipes. One end of the sill embedded steel bar is provided with a steel bar mechanical connector. The multiple frame embedded pipes and the multiple upper frame embedded pipes have the same structure. Multiple sill positioning screws are correspondingly set with multiple embedded screws, and one end is used to be screwed to the steel bar mechanical connector. The inner side of the frame U-shaped template is used to set the frame embedded pipes, and the inner side of the upper frame U-shaped template is used to set the upper frame embedded pipes. One of the locking screws is used to pass through the inner hole of one embedded pipe.

[0013] By adopting the above technical solution, the building foundation includes a foundation and a civil defense wall built on the foundation. A door bottom frame receiving groove is constructed on the foundation, and a door opening is provided in the civil defense wall. The civil defense door interface component has multiple sill embedded steel bars, multiple frame embedded pipe fittings, and multiple upper frame embedded pipe fittings. One end of the sill embedded steel bar is equipped with a steel bar mechanical connector, and the other end of the sill embedded steel bar is inserted into the bottom of the door bottom frame receiving groove. During the pre-embedding of the auxiliary civil defense door interface component, the steel bar mechanical connector is first screwed to the sill positioning screw, and then the sill template is placed in the groove of the door bottom frame receiving groove, thereby achieving the pre-embedding positioning of the steel bar mechanical connector. Next, place the pre-embedded pipe fitting inside the U-shaped template of the frame. After the locking screw passes through the locking through hole and the inner hole of the pre-embedded pipe fitting, tighten the locking nuts on both ends of the locking screw, so that the two locking nuts abut against the U-shaped template of the frame, limiting the two ends of the locking screw, and thus pre-positioning the pre-embedded pipe fitting. Then, install the two U-shaped templates of the frame at both ends of the threshold template, and make the groove of the upper frame U-shaped template abut against the inner wall of the door opening. After the locking nut is tightened in place, the teeth of the movable rack insert into part of the tooth groove, locking the locking nut in the axial direction of the locking screw, ensuring that the locking nut is not easy to loosen, further improving the positioning stability and positioning accuracy between the U-shaped template of the frame and the pre-embedded pipe fitting, and further improving the pre-embedded accuracy of the pre-embedded pipe fitting. When it is necessary to remove the locking nut, move the movable rack away from the tooth groove to release the locking nut. Then, the upper frame U-shaped template is erected on top of the two side frame U-shaped templates, so that the groove of the upper frame U-shaped template abuts against the top inner wall of the door opening. Here, the upper frame U-shaped template and the side frame U-shaped templates are structurally identical except for some length differences. The embedded pipes in the side frames and the upper frame are structurally identical; therefore, the positioning method for the upper frame embedded pipes is the same as that for the side frame embedded pipes. Then, concrete is sequentially injected into the door bottom frame receiving groove below the threshold template, the side frame U-shaped template, and the upper frame U-shaped template. After the concrete has solidified, all templates can be removed. In summary, this application enables precise pre-embedding and positioning of the air-raid shelter door interface components, improving the pre-embedding accuracy of the air-raid shelter door interface components.

[0014] Optionally, a first side buffer gap is provided between the threshold template and the two U-shaped frame templates, and a first side connector is connected between the threshold template and the U-shaped frame template.

[0015] A second side buffer gap is provided between the upper frame U-shaped template and the two side frame U-shaped templates, and a second side connector is connected between the side frame U-shaped template and the upper frame U-shaped template.

[0016] By adopting the above technical solution, in actual construction, the working conditions are complex, and the precision of the door bottom frame receiving groove and door opening is limited. The reserved first and second side buffer gaps provide alignment space between the threshold template, the frame U-shaped template, and the upper frame U-shaped template. In complex working conditions, this prevents the threshold template, frame U-shaped template, and upper frame U-shaped template from jamming due to direct large-area contact, facilitating the installation and disassembly of these templates. The first side connector connects the threshold template and the frame U-shaped template, ensuring stable mutual positioning and sealing the first side buffer gap. The second side connector connects the frame U-shaped template and the upper frame U-shaped template, ensuring stable mutual positioning and sealing the second side buffer gap.

[0017] Optionally, the relative positions of the U-shaped border template and the threshold template can be adjusted in the vertical direction.

[0018] By adopting the above technical solution, the height of the U-shaped template with the border can be easily adjusted to adapt to actual working conditions.

[0019] Optionally, the U-shaped frame template includes a middle plate and two side plates, the side plates being located on the side of the middle plate away from the threshold template, and the two side plates being respectively installed at both ends of the middle plate;

[0020] The locking through hole is located on the side plate.

[0021] By adopting the above technical solution, the thickness of the air-raid shelter wall varies under different construction environments. In such cases, the U-shaped frame template can be refitted to the new air-raid shelter door size by replacing the intermediate plate with one of corresponding width. In summary, the U-shaped frame template of this application, through modular assembly, only requires the replacement of the intermediate plate when facing air-raid shelter walls of different thicknesses, while the remaining components can be reused, saving costs and improving the adaptability of the U-shaped frame template.

[0022] Optionally, the inner diameter of the locking through hole is larger than the outer diameter of the locking screw;

[0023] The inner side of the locking through hole is provided with a positioning tube sleeved on the locking screw. The outer diameter of the positioning tube is equal to the inner diameter of the locking through hole and the inner diameter of the pre-embedded tube in the frame. The inner diameter of the positioning tube is equal to the outer diameter of the locking screw.

[0024] The outer diameter of the end of the positioning tube that is inserted into the locking through hole is reduced, and a limiting ring is provided at the end of the positioning tube that points to the locking nut;

[0025] A tapered tube is connected between the positioning cannula and the limiting ring. The tapered tube is coaxially sleeved on the positioning cannula, and the smaller diameter end of the tapered tube is coaxially connected to the positioning cannula.

[0026] An annular pad fitted onto the tapered tube is provided between the limiting ring and the U-shaped template of the frame;

[0027] The annular pad is installed on the U-shaped template of the frame and is coaxial with the locking through hole.

[0028] By adopting the above technical solution, in actual construction, if the inner diameter of the locking through hole is equal to the outer diameter of the locking screw, even a slight error can easily cause the locking screw to jam, making installation and disassembly of the locking screw extremely difficult. Considering complex working conditions, errors are quite common. However, if the inner diameter of the locking through hole is larger than the outer diameter of the locking screw, the locking screw will not jam in the locking through hole. After the locking screw passes through the locking through hole and the inner hole of the pre-embedded pipe in the frame, the alignment tube is sleeved on the locking screw and inserted into the locking through hole. The insertion end of the alignment tube has a reduced diameter to facilitate better guidance of the alignment tube into the locking through hole. The outer diameter of the alignment tube is equal to the inner diameter of the locking through hole and the inner diameter of the pre-embedded pipe fitting in the frame. After the alignment tube is inserted into the locking through hole and its inner hole in sequence, it can limit the relative position between the locking screw, the locking through hole, and the pre-embedded pipe fitting in the frame, thus improving the installation accuracy of the locking screw, i.e., the pre-embedded pipe fitting in the frame. Finally, the locking nut is tightened, causing the locking nut to press the alignment tube into the locking through hole. Because the alignment tube is relatively shorter than the locking screw, and the insertion end of the alignment tube has a reduced diameter, even if the alignment tube is stuck in the locking through hole, it can be easily pried out of the locking through hole by external force. The annular pad is used to enhance the strength of the U-shaped template of the frame at the locking through hole, and the annular pad cooperates with the tapered tube to further guide the insertion of the alignment tube, further limit the relative position between the alignment tube and the locking through hole, and further improve the installation accuracy of the locking screw, i.e., the pre-embedded pipe fitting in the frame.

[0029] Optionally, both ends of the locking screw are provided with axially arranged side grooves and axially arranged stationary racks;

[0030] The stationary rack is detachably mounted on the bottom of the side groove and connected to the locking screw;

[0031] The tooth grooves are provided on the stationary rack and are distributed along the length direction of the stationary rack.

[0032] By adopting the above technical solution, after the teeth are inserted into the tooth groove, the mutual limiting of the stationary rack and the moving rack achieves the locking of the lock nut.

[0033] Optionally, the locking nut includes a nut body, a ribbed tube, an annular seat, and a first connecting rod, wherein the nut body is screwed to the locking screw.

[0034] The prism tube is coaxially connected to the end of the nut body away from the U-shaped template of the frame;

[0035] The annular seat is rotatably connected to the prism tube on the same axis. The inner wall of the annular seat is provided with a radially arranged receiving hole, and a coaxial first connecting rod is provided in the receiving hole.

[0036] The first end of the first connecting rod is connected to the movable rack, and the second end is elastically connected to the annular seat.

[0037] By adopting the above technical solution, when the nut body rotates, the first connecting rod is pressed against the annular seat, causing the movable rack to be located outside the side groove. After the nut body is tightened in place, the annular seat is rotated, causing the movable rack to enter the side groove. Because the second end of the first connecting rod is elastically connected to the annular seat, under the action of elastic force, the movable rack can contact and limit the stationary rack, thereby locking the nut body. If the nut body needs to be disassembled after the combined template is used, the first connecting rod is pressed against the annular seat again, causing the movable rack to be located outside the side groove, thus releasing the locking of the nut body.

[0038] Optionally, a spring is connected to the second end of the first connecting rod and the annular seat;

[0039] The second end of the first connecting rod is also provided with a coaxial second connecting rod, and the spring is sleeved on the second connecting rod;

[0040] The second connecting rod has a plug at one end away from the first connecting rod, and a tube connected to the annular seat is provided on the side of the plug away from the second connecting rod. The plug is used to connect with the tube.

[0041] By adopting the above technical solution, when it is necessary to freely rotate the nut body, the locking of the nut body needs to be released, which allows the first connecting rod to be pressed against the annular seat, so that the plug can be inserted into the insertion tube. After the plug and insertion tube are connected, the first connecting rod is limited, and the movable rack is also limited outside the side groove, which facilitates the free rotation of the nut body. After the plug is pulled out of the insertion tube, under the action of the spring force, the movable rack moves towards the stationary rack, and the movable rack and the stationary rack contact each other to limit each other, thereby locking the nut body.

[0042] Optionally, the pre-embedded combination template of the auxiliary air defense door interface component further includes a support component, which is used to support the U-shaped template of the frame and the U-shaped template of the upper frame.

[0043] By adopting the above technical solution, the stability of the U-shaped frame template and the U-shaped upper frame template is improved after they are installed in place.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. In this application, the threshold positioning screw and locking screw can be used to accurately pre-embed the interface components of the air defense door, thereby improving the pre-embedding accuracy of the interface components of the air defense door.

[0046] 2. In this application, after the locking nut is tightened to the correct position, the teeth of the movable rack insert into the tooth groove, locking the locking nut in the axial direction of the locking screw, ensuring that the locking nut is not easy to loosen, further improving the positioning stability and positioning accuracy between the frame U-shaped template and the frame embedded pipe, and further improving the pre-embedding accuracy of the frame embedded pipe.

[0047] 3. In this application, the reserved first and second side buffer gaps provide positioning space between the threshold template, the border U-shaped template, and the upper frame U-shaped template. In complex working conditions, this prevents the threshold template, the border U-shaped template, and the upper frame U-shaped template from getting stuck due to direct large-area contact, thus facilitating the installation and disassembly of the threshold template, the border U-shaped template, and the upper frame U-shaped template.

[0048] 4. In this application, the U-shaped frame template is assembled in a modular manner. When facing civil defense walls of different thicknesses, only the middle plate needs to be replaced, and the rest of the components can be reused, which saves costs and improves the adaptability of the U-shaped frame template.

[0049] 5. In this application, by setting the inner diameter of the locking through hole to be larger than the outer diameter of the locking screw, the situation where the locking screw gets stuck in the locking through hole can be avoided.

[0050] 6. In this application, the positioning tube can limit the relative position of the locking screw and the locking through hole, thereby improving the installation accuracy of the locking screw, which is the pre-embedded tube in the frame. Since the positioning tube is relatively short and the insertion end of the positioning tube is narrowed, even if the positioning tube is stuck in the locking through hole, it is only a small section less than the length of the locking through hole. It is easy to pry the positioning tube out of the locking through hole by external force. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the structure of the air-raid shelter door interface component after it is embedded in the foundation according to an embodiment of this application;

[0053] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application;

[0054] Figure 3 This is a partial exploded view of the structure of Embodiment 1 of this application;

[0055] Figure 4 This is a cross-sectional schematic diagram of the connection structure between the locking nut and one end of the locking screw in Embodiment 1 of this application;

[0056] Figure 5 This is an installation diagram of Example 1 of the positioning cannulation method;

[0057] Figure 6 This is a schematic diagram of the installation of the second embodiment of the alignment cannula;

[0058] Figure 7 This is a schematic diagram of the installation structure of a single U-shaped steel section in Embodiment 2 of the threshold template;

[0059] Figure 8 This is a schematic diagram of the installation structure of multiple U-shaped steel sections in Embodiment 2 of the threshold template;

[0060] Figure 9 This is a schematic diagram of the second embodiment of the U-shaped border template;

[0061] Figure 10 This is a schematic diagram of the structure of Embodiment 3 of the U-shaped border template;

[0062] Figure 11 This is a schematic diagram of the fourth embodiment of the U-shaped border template.

[0063] Figure label:

[0064] 10. Building foundation; 101. Foundation; 1011. Door bottom frame receiving groove; 102. Civil defense wall; 1021. Door opening; 1. Civil defense door interface components; 11. Threshold embedded steel bars; 110. Steel bar mechanical connectors; 12. Frame embedded pipe fittings; 13. Upper frame embedded pipe fittings; 2. Threshold template; 20. U-shaped steel; 21. Threshold long plate; 2101. Threshold positioning through hole; 22. Threshold upright plate; 23. Threshold positioning screw; 231. Threshold positioning nut; 24. Threshold connecting plate; 2401. First slotted through hole; 241. First adjusting bolt; 242. First adjusting nut; 201. First side buffer gap; 202. First side connector; 20201. Second slotted through hole; 2021. Second adjusting bolt; 2022. Second adjusting nut; 3. Frame U-shaped template; 30. Short U-shaped template; 31. Intermediate plate; 3 11. First short plate; 32. Side plate; 321. Second short plate; 3201. Locking through hole; 33. Locking screw; 3301. Side groove; 331. Stationary rack; 3310. Tooth groove; 34. Locking nut; 341. Nut body; 342. Ribbed tube; 343. Ring seat; 34301. Receiving hole; 344. First connecting rod; 3441. Pushing component; 345. Second connecting rod; 346. Plug; 3 461. Insertion tube; 347. Spring; 3471. Connecting ring; 348. Movable rack; 3481. Tooth; 35. Positioning insertion tube; 351. Limiting ring; 352. Tapered tube; 36. Annular pad; 301. Second side buffer gap; 302. Second side connector; 37. Elevation plate; 4. Upper frame U-shaped template; 41. Upper frame connecting plate; 5. Support assembly; 51. Vertical telescopic component; 52. Angled telescopic component. Detailed Implementation

[0065] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0066] This application discloses a reusable combined template for pre-embedded auxiliary civil defense door interface components.

[0067] Reference Figure 1The building foundation 10 has a foundation 101 and a civil defense wall 102 built on the foundation 101. A door bottom frame receiving groove 1011 is built on the foundation 101, and a door opening 1021 is provided on the civil defense wall 102. The civil defense door interface component 1 has multiple threshold embedded steel bars 11 and multiple steel bar mechanical connectors 110, multiple frame embedded pipe fittings 12 and multiple upper frame embedded pipe fittings 13. The multiple threshold embedded steel bars 11 and the multiple steel bar mechanical connectors 110 are arranged one-to-one. The threshold embedded steel bar 11 is connected to the corresponding steel bar mechanical connector 110, wherein the steel bar mechanical connector 110 is used to screw to the threshold positioning screw 23, and the other end of the threshold embedded steel bar 11 is used to insert into the door bottom frame receiving groove 1011. The frame embedded pipe 12 and the upper frame embedded pipe 13 have the same structure. The frame embedded pipe 12 is used to be embedded in the frame part of the door opening 1021, and the upper frame embedded pipe 13 is used to be embedded in the upper frame part of the door opening 1021.

[0068] Example 1

[0069] Reference Figure 2 , Figure 3 and Figure 4 A reusable combined template for pre-embedding auxiliary air defense door interface components includes a threshold template 2, an upper frame U-shaped template 4, and two vertically arranged side frame U-shaped templates 3. The threshold template 2 is provided with multiple vertically rotatable threshold positioning screws 23. Specifically, the threshold template 2 includes two threshold plates 21, which are vertically spaced apart, and multiple threshold uprights 22 are connected between the two threshold plates 21. The threshold plates 21 are provided with multiple threshold positioning through holes 2101, which are distributed along the length of the threshold plates 21. Each threshold positioning through hole 2101 is provided with a coaxial threshold positioning screw 23. A threshold positioning nut 231, which is screwed to the threshold positioning screw 23, is provided on the side of the threshold plate 21 away from the foundation 101.

[0070] Reference Figure 2 , Figure 3 and Figure 4 Two U-shaped templates 3 are respectively located at both ends of the bottom mold body along its length. Multiple locking through holes 3201 are provided on the U-shaped templates 3 along the width of their slots, and a locking screw 33 is provided inside each locking through hole 3201. Locking nuts 34 located outside the U-shaped templates 3 are screwed to both ends of the locking screw 33. Multiple axially distributed toothed grooves 3310 are provided on the side walls of both ends of the locking screw 33. A movable rack 348 is rotatably connected to the locking nut 34 around its axis of rotation. The movable rack 348 is also movably connected to the locking nut 34 in the radial direction of the locking nut 34, and has multiple teeth 3481 for engaging with some of the toothed grooves 3310.

[0071] Reference Figure 2 , Figure 3 and Figure 4 The upper frame U-shaped template 4 is located above the threshold template 2 and installed between the two side frame U-shaped templates 3, and has the same structure as the side frame U-shaped template 3.

[0072] Reference Figure 2 , Figure 3 and Figure 4 The air-raid shelter door interface component 1 has multiple threshold embedded steel bars 11, multiple frame embedded pipe fittings 12, and multiple upper frame embedded pipe fittings 13. The multiple frame embedded pipe fittings 12 and the multiple upper frame embedded pipe fittings 13 have the same structure. Multiple threshold positioning screws 23 are correspondingly set with multiple embedded screws, one end of which is used to be screwed to the steel bar mechanical connector 110. The inner side of the frame U-shaped template 3 is used to set the frame embedded pipe fittings 12, and the inner side of the upper frame U-shaped template 4 is used to set the upper frame embedded pipe fittings 13. A locking screw 33 is used to pass through the inner hole of one embedded pipe fitting.

[0073] Reference Figure 2 , Figure 3 and Figure 4In this embodiment, when pre-embedding the auxiliary air defense door interface component 1, the threshold pre-embedded steel bar 11 is first inserted into the bottom of the door bottom frame receiving groove 1011, and the steel bar mechanical connector 110 is screwed to the threshold positioning screw 23. Then, the threshold template 2 is set in the groove of the door bottom frame receiving groove 1011, thereby realizing the pre-embedding positioning of the threshold pre-embedded steel bar 11. Next, the frame pre-embedded pipe 12 is placed inside the frame U-shaped template 3. After the locking screw 33 passes through the locking through hole 3201 and the inner hole of the frame pre-embedded pipe 12, locking nuts 34 are screwed on both ends of the locking screw 33, so that the two locking nuts 34 abut against the frame U-shaped template 3, limiting the two ends of the locking screw 33, thereby pre-embedding and positioning the frame pre-embedded pipe 12. Then, the two frame U-shaped templates 3 are respectively installed at both ends of the threshold template 2, and the groove of the upper frame U-shaped template 4 abuts against the inner wall of the door opening 1021. After the locking nut 34 is tightened into place, the teeth 3481 of the movable rack 348 are inserted into the tooth groove 3310, locking the locking nut 34 in the axial direction of the locking screw 33, ensuring that the locking nut 34 is not easy to loosen, further improving the positioning stability and positioning accuracy between the frame U-shaped template 3 and the frame embedded pipe 12, and further improving the pre-embedding accuracy of the frame embedded pipe 12. When it is necessary to remove the locking nut 34, the locking of the locking nut 34 can be released by moving the movable rack 348 away from the tooth groove 3310. Then, the upper frame U-shaped template 4 is erected on top of the two side frame U-shaped templates 3, so that the groove of the upper frame U-shaped template 4 abuts against the top inner wall of the door opening 1021. Here, the upper frame U-shaped template 4 and the side frame U-shaped templates 3 are structurally identical except for some differences in length and other dimensions. The structure of the side frame embedded pipe 12 and the upper frame embedded pipe 13 is the same. Therefore, the positioning method of the upper frame embedded pipe 13 is the same as that of the side frame embedded pipe 12. Then, concrete is injected into the door bottom frame receiving groove 1011 below the threshold template 2, the side frame U-shaped template 3, and the upper frame U-shaped template 4 in sequence. After the concrete has solidified, all the templates can be removed. In summary, this application can accurately pre-embed and position the air defense door interface component 1, improving the pre-embedding accuracy of the air defense door interface component 1.

[0074] Reference Figure 2 and Figure 3 A first side buffer gap 201 is provided between the threshold template 2 and the two side U-shaped templates 3. Two threshold connecting plates 24 are connected to the side U-shaped templates 3 at both ends of the threshold template 2. The two threshold connecting plates 24 are located at both ends of the width direction of the threshold template 2. A first side connector 202 is connected between the threshold template 2 and the two side U-shaped templates 3. The first side connector 202 is located above the threshold template 2 and between the two threshold connecting plates 24.

[0075] Reference Figure 2 and Figure 3In this embodiment, during actual construction, the working conditions are complex. A pre-reserved first side buffer gap 201 provides positioning space between the threshold template 2 and the U-shaped frame template 3. This prevents the threshold template 2 and the U-shaped frame template 3 from jamming due to direct large-area contact when facing complex working conditions, facilitating their installation and disassembly. The first side connector 202 connects the threshold template 2 and the U-shaped frame template 3 together, ensuring stable and precise mutual positioning and connection, and also sealing the first side buffer gap 201. After the first side connector 202 precisely limits and fixes the threshold template 2 and the U-shaped frame template 3, the threshold connecting plate 24 further fixes the threshold template 2 and the U-shaped frame template 3, improving the strength of the connection between them. In summary, the first side connector 202 is used to connect the threshold template 2 and the U-shaped frame template 3 together, which not only enables the threshold template 2 and the U-shaped frame template 3 to be stably positioned to each other, but also seals the first side buffer gap 201.

[0076] Reference Figure 2 and Figure 3 A second side buffer gap 301 is provided between the upper frame U-shaped template 4 and the two side frame U-shaped templates 3. Two upper frame connecting plates 41 are connected to both ends of the upper frame U-shaped template 4 and the side frame U-shaped templates 3, respectively located at both ends of the upper frame U-shaped template 4 in the width direction. A second side connector 302 is connected between the two side frame U-shaped templates 3 and the upper frame U-shaped template 4. The second side connector 302 is located below the upper frame connecting plates 41 and between the two upper frame connecting plates 41. The two second side connectors 302 are used to support both ends of the upper frame U-shaped template 4 and are connected to the upper frame U-shaped template 4 to achieve the installation and fixation of the upper frame U-shaped template 4.

[0077] Reference Figure 2 and Figure 3In this embodiment, during actual construction, the working conditions are complex. A pre-reserved second side buffer gap 301 provides a positioning space between the frame U-shaped template 3 and the upper frame U-shaped template 4. This prevents the frame U-shaped template 3 and the upper frame U-shaped template 4 from jamming due to direct large-area contact when facing complex working conditions, facilitating the installation and disassembly of the frame U-shaped template 3 and the upper frame U-shaped template 4. The second side connector 302 connects the frame U-shaped template 3 and the upper frame U-shaped template 4 together, ensuring stable and precise positioning and connection between them, and sealing the second side buffer gap 301. After the second side connector precisely limits and fixes the frame U-shaped template 3 and the upper frame U-shaped template 4, the upper frame connecting plate 41 further fixes the frame U-shaped template and the upper frame U-shaped template 4, improving the strength of the connection between them. In summary, the second side connector 302 is used to connect the frame U-shaped template 3 and the upper frame U-shaped template 4 together, which not only enables the frame U-shaped template 3 and the upper frame U-shaped template 4 to be stably positioned to each other, but also seals the second side buffer gap 301.

[0078] Reference Figure 2 and Figure 3 In the vertical direction, the relative positions of the U-shaped frame template 3 and the sill template 2 are adjustable. Furthermore, the U-shaped frame template 3 can be raised and lowered on the sill template 2, or the sill template 2 can be raised and lowered on the sill template 2. Specifically, the sill connecting plate 24 is vertically oriented, and has a first slotted through hole 2401 vertically oriented along its length. Inside the first slotted through hole 2401 is a first adjusting bolt 241 screwed onto the U-shaped frame template 3. The first adjusting bolt 241 passes through the U-shaped frame template 3 and the first slotted through hole 2401 sequentially and is screwed onto a first adjusting nut 242. When the height of the U-shaped frame template 3 needs to be adjusted, the U-shaped frame template 3 is moved up and down along the length of the first slotted through hole 2401. After the height of the U-shaped frame template 3 is adjusted, the first adjusting nut 242 is tightened to limit the height of the U-shaped frame template 3. To further stabilize the height of the U-shaped frame template 3, a shim plate 37 is installed between the U-shaped frame template 3 and the foundation 101. The shim plate 37 supports and elevates the U-shaped frame template 3.

[0079] Reference Figure 2 and Figure 3The U-shaped frame template 3 includes a middle plate 31 and two side plates 32. The side plates 32 are located on the side of the middle plate 31 away from the threshold template 2, and the two side plates 32 are respectively installed at both ends of the middle plate 31. Both side plates 32 are connected to the middle plate 31 by welding, bolts, or other fixed connections, making the U-shaped frame template 3 a whole, improving the overall strength and stability of the U-shaped frame template 3. When processing door frames of different thicknesses, the corresponding size of the U-shaped frame template 3 can be replaced. The threshold connecting plate 24 and the upper frame connecting plate 41 are both connected to the side plates 32. A locking through hole 3201 is provided on the side plate 32.

[0080] Reference Figure 4 and Figure 5 The inner diameter of the locking through hole 3201 is larger than the outer diameter of the locking screw 33. A positioning tube 35 is provided inside the locking through hole 3201 and sleeved on the locking screw 33. The outer diameter of the positioning tube 35 is equal to the inner diameter of the locking through hole 3201 and the inner diameter of the pre-embedded pipe fitting 12 in the frame. The inner diameter of the positioning tube 35 is equal to the outer diameter of the locking screw 33. The outer diameter of the end of the positioning tube 35 inserted into the locking through hole 3201 is reduced. A coaxial limiting ring 351 is provided at the end of the positioning tube 35 pointing towards the locking nut 34. A tapered tube 352 connects the positioning tube 35 and the limiting ring 351. The tapered tube 352 is coaxially sleeved on the positioning tube 35, and the smaller diameter end of the tapered tube 352 is coaxially connected to the positioning tube 35. An annular pad 36 is provided between the limiting ring 351 and the U-shaped template 3 of the frame, and is fitted onto the tapered tube 352. The annular pad 36 is installed on the U-shaped template 3 of the frame and is coaxial with the locking through hole 3201.

[0081] Reference Figure 4 and Figure 5In this embodiment, during actual construction, if the inner diameter of the locking through hole 3201 is equal to the outer diameter of the locking screw 33, even a slight error can easily cause the locking screw 33 to jam, making installation and disassembly of the locking screw 33 very difficult. Considering complex working conditions, such errors are quite common. However, if the inner diameter of the locking through hole 3201 is larger than the outer diameter of the locking screw 33, the locking screw 33 will not jam in the locking through hole 3201. After the locking screw 33 passes through the locking through hole 3201 and the inner hole of the frame embedded pipe 12, the alignment tube 35 is sleeved on the locking screw 33 and inserted into the locking through hole 3201 and the frame embedded pipe 12. The insertion end of the alignment tube 35 has a reduced diameter to facilitate better guidance of the alignment tube 35 into the locking through hole 3201. The outer diameter of the alignment tube 35 is equal to the inner diameter of the locking through hole 3201 and the inner diameter of the frame pre-embedded pipe 12. The alignment tube 35 is first sleeved on the locking screw 33. After the locking screw 33 is inserted to a specified depth, the alignment tube 35 is then inserted into the inner hole of the locking through hole 3201 and the frame pre-embedded pipe 12 in sequence. The alignment tube 35 can limit the relative position between the locking screw 33, the locking through hole 3201 and the frame pre-embedded pipe 12, thereby improving the installation accuracy of the frame pre-embedded pipe 12. Finally, the locking nut 34 is tightened so that the locking nut 34 presses the alignment tube 35 against the locking through hole 3201. Because the alignment tube 35 is relatively short and its insertion end is narrowed, even if the alignment tube 35 is stuck in the locking through hole 3201 and the frame pre-embedded pipe fitting 12, it can be easily pried away from the locking through hole 3201 and the frame pre-embedded pipe fitting 12 by external force. The annular pad 36 is used to enhance the strength of the frame U-shaped template 3 at the locking through hole 3201, and the annular pad 36 cooperates with the tapered tube 352 to further guide the insertion of the alignment tube 35, further limit the relative position between the alignment tube 35 and the locking through hole 3201, and further improve the installation accuracy of the locking screw 33, that is, the frame pre-embedded pipe fitting 12.

[0082] Reference Figure 4 The locking screw 33 has axially arranged side grooves 3301 and axially arranged stationary racks 331 on both end side walls. The stationary rack 331 is detachably installed at the bottom of the side grooves 3301 and connected to the locking screw 33. Gear grooves 3310 are provided on the stationary rack 331 and distributed along the length direction of the stationary rack 331. In the embodiment of this application, after the teeth 3481 are inserted into the gear grooves 3310, the mutual limiting of the stationary rack 331 and the movable rack 348 achieves locking of the locking nut 34.

[0083] Reference Figure 4The locking nut 34 includes a nut body 341, a ribbed tube 342, an annular seat 343, and a first connecting rod 344. The nut body 341 is screwed to the locking screw 33. The ribbed tube 342 is coaxially connected to the end of the nut body 341 away from the U-shaped template 3 on the frame. The annular seat 343 is rotatably connected to the ribbed tube 342 on the same axis. The inner wall of the annular seat 343 has a radially arranged receiving hole 34301. The coaxial first connecting rod 344 is arranged in the receiving hole 34301, and the first connecting rod 344 is slidably connected to the annular seat 343 in the radial direction of the annular seat 343. The first end of the first connecting rod 344 is connected to the movable rack 348, and the second end is elastically connected to the annular seat 343. The first end of the first connecting rod 344 has a pusher 3441 located outside the receiving hole 34301. By pushing the pusher 3441, the first connecting rod 344 slides in the receiving hole 34301.

[0084] Reference Figure 4 In this embodiment, when the nut body 341 rotates, the first connecting rod 344 is pressed against the annular seat 343, causing the movable rack 348 to be located outside the side groove 3301. After the nut body 341 is tightened in place, the annular seat 343 is rotated, causing the movable rack 348 to enter the side groove 3301. Since the second end of the first connecting rod 344 is elastically connected to the annular seat 343, under the action of elastic force, the movable rack 348 can contact and limit the stationary rack 331, thereby locking the nut body 341. If the nut body 341 needs to be disassembled after the combined template is used, the first connecting rod 344 is pressed against the annular seat 343 again, causing the movable rack 348 to be located outside the side groove 3301, thus releasing the locking of the nut body 341.

[0085] Reference Figure 4 The second end of the first connecting rod 344 is connected to the annular seat 343 by a spring 347. A limiting ring 351, coaxial with the receiving hole 34301, is connected between the spring 347 and the annular seat 343. The second end of the first connecting rod 344 is also provided with a coaxial second connecting rod 345. The second connecting rod 345 is located inside the limiting ring 351 and is slidably connected to the limiting ring 351 in the axial direction of the limiting ring 351. The spring 347 is sleeved on the second connecting rod 345. The end of the second connecting rod 345 away from the first connecting rod 344 is provided with a plug 346. The side of the plug 346 away from the second connecting rod 345 is provided with a insertion tube 3461 connected to the annular seat 343. The plug 346 is used to insert into the insertion tube 3461.

[0086] Reference Figure 4In this embodiment, when it is necessary to freely rotate the nut body 341, the locking of the nut body 341 needs to be released, allowing the first connecting rod 344 to be pressed against the annular seat 343, so that the plug 346 can be inserted into the insertion tube 3461. After the plug 346 and the insertion tube 3461 are connected, the first connecting rod 344 is limited, and the movable rack 348 is also limited outside the side groove 3301, facilitating the free rotation of the nut body 341. After the plug 346 is pulled out of the insertion tube 3461, under the elastic force of the spring 347, the movable rack 348 moves toward the stationary rack 331, and the movable rack 348 and the stationary rack 331 contact each other and are limited, thereby locking the nut body 341.

[0087] Reference Figure 4 In other embodiments, to further enhance the locking effect on the locking nut 34, a movable rack 348 is located on the side of the nut body 341 away from the side plate 32, and there is a distance between the movable rack 348 and the nut body 341 along the axial direction of the nut body 341. Along the axial direction of the nut body 341, the teeth 3481 are inclined away from the nut body 341, and the tooth groove 3310 is also adaptively inclined towards the nut body 341 in accordance with the teeth 3481. During the tightening of the nut body 341, the movable rack 348 is located in the side groove 3301 and in contact with the stationary rack 331. At this time, the direction of tightening the nut body 341 is the direction in which the teeth 3481 separate from the tooth groove 3310. After the nut body 341 is tightened to the correct position, the teeth 3481 are inserted into the tooth groove 3310, and along the axial direction of the nut body 341, the movable rack 348 and the stationary rack 331 are hooked together. If the nut body 341 is subjected to a loosening force, since the direction of loosening of the nut body 341 is the direction in which the teeth 3481 insert into the tooth groove 3310, the movable rack 348 and the stationary rack 331 will hook more firmly into each other, making it impossible to loosen the nut body 341. If it is necessary to remove the nut, the first connecting rod 344 is bent towards the nut body 341, so that the teeth 3481 separate from the tooth groove 3310, and then the first connecting rod 344 is moved away from the locking screw 33. Here, the first connecting rod 344 is made of an elastic metal with a certain elastic restoring function, and the elastic metal can be made of materials available in the prior art.

[0088] Reference Figure 2The pre-embedded composite template for the auxiliary air-raid shelter interface components also includes a support assembly 5, which supports the frame U-shaped template 3 and the upper frame U-shaped template 4. Specifically, the support assembly 5 includes multiple vertical expansion members 51 and multiple diagonal expansion members 52. One end of the vertical expansion member 51 is connected to the threshold template 2, and the other end is connected to the upper frame U-shaped template 4. One end of the diagonal expansion member 52 is hinged to the upper frame connecting plate 41, and the other end is hinged to the foundation 101. In this embodiment, after the frame U-shaped template 3 and the upper frame U-shaped template 4 are installed in place, the support assembly 5 can improve the stability of the frame U-shaped template 3 and the upper frame U-shaped template 4.

[0089] The implementation principle of the reusable combined template for pre-embedded auxiliary air defense door interface components in this application embodiment is as follows:

[0090] First, the threshold pre-embedded steel bar 11 is screwed to the steel bar mechanical connector 110. Then, the threshold template 2 is set in the groove of the door bottom frame receiving groove 1011, thereby realizing the pre-embedded positioning of the threshold pre-embedded steel bar 11.

[0091] Next, place the frame pre-embedded pipe fitting 12 inside the frame U-shaped template 3. After the locking screw 33 passes through the locking through hole 3201 and the inner hole of the frame pre-embedded pipe fitting 12, tighten the locking nuts 34 on both ends of the locking screw 33 so that the two locking nuts 34 abut against the frame U-shaped template 3, limit the two ends of the locking screw 33, and then pre-embed and position the frame pre-embedded pipe fitting 12. Then, install the two frame U-shaped templates 3 at both ends of the threshold template 2, and make the groove of the upper frame U-shaped template 4 abut against the inner wall of the door opening 1021. After the locking nut 34 is tightened into place, the teeth 3481 of the movable rack 348 are inserted into the tooth groove 3310, locking the locking nut 34 in the axial direction of the locking screw 33, ensuring that the locking nut 34 is not easy to loosen, further improving the positioning stability and positioning accuracy between the frame U-shaped template 3 and the frame embedded pipe 12, and further improving the pre-embedding accuracy of the frame embedded pipe 12. When it is necessary to remove the locking nut 34, the locking of the locking nut 34 can be released by moving the movable rack 348 away from the tooth groove 3310.

[0092] Then, the upper frame U-shaped template 4 is placed on top of the two side frame U-shaped templates 3, so that the groove of the upper frame U-shaped template 4 abuts against the top inner wall of the doorway 1021. Here, the second side connector 302 supports the upper frame U-shaped template 4. After the upper frame U-shaped template 4 is connected to the second side connector 302, the upper frame connecting plate 41 connects the upper frame U-shaped template 4 to the side frame U-shaped templates 3, thus achieving the connection and fixation between the upper frame U-shaped template 4 and the two side frame U-shaped templates 3.

[0093] Among them, the upper frame U-shaped template 4 and the side frame U-shaped template 3 have the same structure except for some size differences. The side frame embedded pipe 12 and the upper frame embedded pipe 13 have the same structure. Therefore, the positioning method of the upper frame embedded pipe 13 is the same as that of the side frame embedded pipe 12.

[0094] Finally, concrete is injected into the door bottom frame receiving groove 1011 below the threshold template 2, the U-shaped template 3 of the side frame, and the U-shaped template 4 of the upper frame in sequence. After the concrete has solidified, all the templates can be removed.

[0095] Example 2

[0096] Reference Figure 6 The difference between Embodiment 2 and Embodiment 1 is that the alignment tube 35 is located at the end of the pre-embedded tube 12 in the frame, and coaxial alignment tubes 35 are provided at both ends of the pre-embedded tube 12 in the frame. During the assembly of the middle plate 31 and the two side plates 32, the alignment tube 35 is inserted into the locking through hole 3201 to limit the relative position of the pre-embedded tube 12 in the frame and the U-shaped template 3 in the frame. Here, the annular pad 36 is directly provided between the locking nut 34 and the side plate 32 to enhance the strength of the U-shaped template 3 in the locking through hole 3201.

[0097] Reference Figure 7 and Figure 8 The threshold template 2 is composed of U-shaped steel 20, and one or more U-shaped steel 20 can be selected according to actual needs. The U-shaped steel 20 is provided with multiple threshold positioning through holes 2101. When positioning the threshold and embedding the reinforcing steel 11, the threshold positioning screw 23 passes through the threshold positioning through hole 2101 and is screwed to the reinforcing steel mechanical connector 110. The side of the U-shaped steel 20 away from the reinforcing steel mechanical connector 110 is provided with a threshold positioning nut 231 that is screwed to the threshold positioning screw 23.

[0098] Reference Figure 7 and Figure 8 Both ends of the U-shaped steel 20 are provided with a first side buffer gap 201 to the U-shaped template 3 of the frame, and both ends of the U-shaped steel 20 are connected to the U-shaped template 3 of the frame with a first side connector 202. The first side connector 202 is located above the U-shaped steel 20 and is connected to the U-shaped steel 20 by a detachable connection method such as a bolt connection pair. The first side connector 202 is provided with a vertically arranged second slotted through hole 20201. A second adjusting bolt 2021 is provided in the second slotted through hole 20201. The second adjusting bolt 2021 passes through the U-shaped template 3 of the frame and the second slotted through hole 20201 in sequence and is screwed to a second adjusting nut 2022. The height of the U-shaped template 3 of the frame is adjusted by adjusting the height of the second adjusting bolt 2021 in the second slotted through hole 20201.

[0099] Reference Figure 9The U-shaped frame template 3 includes a middle plate 31 and two side plates 32. The side plates 32 are located on the side of the middle plate 31 away from the threshold template 2, and the two side plates 32 are respectively installed at both ends of the middle plate 31. Both side plates 32 are connected to the middle plate 31 via bolts or other detachable connection methods. The threshold connecting plate 24 and the upper frame connecting plate 41 are both connected to the side plates 32. A locking through hole 3201 is provided on the side plate 32. In this embodiment, the thickness of the air-raid shelter wall varies under different construction environments. In this case, by replacing the middle plate 31 with a corresponding size, the U-shaped frame template 3 can be re-adapted to the new air-raid shelter wall and door opening size. In summary, the U-shaped frame template 3 of this application, through modular assembly, only requires replacing the middle plate 31 with a corresponding size when facing air-raid shelter walls of different thicknesses. The remaining components can be reused, saving costs and improving the adaptability of the U-shaped frame template 3.

[0100] The implementation principle of the reusable combined template for pre-embedded auxiliary air defense door interface components in this application embodiment is as follows:

[0101] When the auxiliary civil defense door interface component 1 is pre-embedded, one end of the threshold pre-embedded steel bar 11 is provided with a steel bar mechanical connector 110, and the other end of the threshold pre-embedded steel bar 11 is inserted into the bottom of the door bottom frame receiving groove 1011.

[0102] First, the threshold pre-embedded steel bar 11 is screwed to the threshold positioning screw 23. Then, the threshold template 2 is set in the groove of the door bottom frame receiving groove 1011, thereby realizing the pre-embedded positioning of the threshold pre-embedded steel bar 11.

[0103] The middle plate 31 and the two side plates 32 are assembled into a U-shaped frame template 3. After the U-shaped frame template 3 is assembled, the two U-shaped frame templates 3 are respectively placed at both ends of the threshold template 2, and the U-shaped frame template 3 is connected to the threshold template 2 using the first side connector 202. At the same time, according to the actual construction requirements, the relative height between the U-shaped frame template 3 and the second grooved through hole 20201 is adjusted, thereby adjusting the height of the U-shaped frame template 3.

[0104] The installation method of the upper frame U-shaped template 4 is the same as that of the border U-shaped template 3 in this case, and the installation method of the border embedded pipe 12 and the upper frame embedded pipe 13 is the same as that of Example 1.

[0105] Finally, concrete is injected into the door bottom frame receiving groove 1011 below the threshold template 2, the U-shaped template 3 of the side frame, and the U-shaped template 4 of the upper frame in sequence. After the concrete has solidified, all the templates can be removed.

[0106] Example 3

[0107] Reference Figure 10To further improve the adaptability of the U-shaped frame template 3, the middle plate 31 is composed of multiple first short plates 311 vertically connected, and the side plate 32 is composed of multiple second short plates 321 vertically connected. By adjusting the number of first short plates 311 and second short plates 321, the height of the middle plate 31 and the side plate 32 can be adjusted, thereby adjusting the height of the U-shaped frame template 3. This maximizes the reuse of raw materials, reduces costs, and improves the adaptability of the U-shaped frame template 3.

[0108] The implementation principle of the reusable combined template for pre-embedded auxiliary air defense door interface components in this application embodiment is as follows:

[0109] Multiple first short plates 311 are vertically connected to form a middle plate 31, and multiple second short plates 321 are vertically connected to form a side plate 32. The middle plate 31 and the two side plates 32 are assembled and connected to form a U-shaped frame template 3.

[0110] The assembly method of the upper frame U-shaped template 4 is the same as that of the side frame U-shaped template 3 in this case. The setting method of the air defense door interface component 1, the threshold template 2, the side frame U-shaped template 3 and the upper frame U-shaped template 4 on the building foundation 10 is the same as that of Embodiment 1 or Embodiment 2.

[0111] Finally, concrete is injected into the door bottom frame receiving groove 1011 below the threshold template 2, the U-shaped template 3 of the side frame, and the U-shaped template 4 of the upper frame in sequence. After the concrete has solidified, all the templates can be removed.

[0112] Example 4

[0113] Reference Figure 11 To further improve the adaptability of the U-shaped frame template 3, the U-shaped frame template 3 is composed of multiple short U-shaped templates 30 connected vertically. During construction, different numbers of short U-shaped templates 30 can be selected and assembled together according to actual needs.

[0114] The implementation principle of the reusable combined template for pre-embedded auxiliary air defense door interface components in this application embodiment is as follows:

[0115] Multiple short U-shaped templates are vertically connected to form a border U-shaped template 3.

[0116] The upper frame U-shaped template 4 is installed in the same way as the side frame U-shaped template 3 in this case. The way the civil defense door interface component 1, threshold template 2, side frame U-shaped template 3 and upper frame U-shaped template 4 are set on the building foundation 10 is the same as in embodiment one, embodiment two or embodiment three.

[0117] Finally, concrete is injected into the door bottom frame receiving groove 1011 below the threshold template 2, the U-shaped template 3 of the side frame, and the U-shaped template 4 of the upper frame in sequence. After the concrete has solidified, all the templates can be removed.

[0118] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0119] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reusable combined template for assisting in pre-burying an interface component of a civil air defense door, characterized in that: Including the threshold template (2), the upper frame U-shaped template (4) and the two vertical setting edge frame U-shaped templates (3), the threshold template (2) is provided with a plurality of threshold positioning screw rods (23) vertically rotatable, two the edge frame U-shaped templates (3) are respectively arranged at the both ends of the length direction of the threshold template (2), Two the edge frame U-shaped templates (3) are respectively arranged at the both ends of the length direction of the threshold template (2), In the slot width direction of the edge frame U-shaped template (3), a plurality of locking through holes (3201) are arranged on the edge frame U-shaped template (3), and the inner side of each locking through hole (3201) is provided with a locking screw rod (33); both ends of the locking screw rod (33) are screwed with a locking nut (34) located outside the edge frame U-shaped template (3); Both ends of the locking screw rod (33) are provided with a plurality of tooth grooves (3310) distributed in the axial direction; the locking nut (34) is provided with a movable rack (348) rotatably connected with the axis of the locking nut (34) as the pivot, and the movable rack (348) is movably connected with the locking nut (34) in the radial direction of the locking nut (34), and the movable rack (348) is provided with a plurality of teeth (3481) for clamping into part of the tooth grooves (3310); The upper frame U-shaped template (4) is arranged above the threshold template (2), and is installed between the two edge frame U-shaped templates (3), and also has the same structure as the edge frame U-shaped template (3); The air defense door interface component (1) has a plurality of threshold embedded steel bars (11), a plurality of edge frame embedded pipe fittings (12) and a plurality of upper frame embedded pipe fittings (13), one end of the threshold embedded steel bar (11) has a steel bar mechanical connecting piece (110), the plurality of edge frame embedded pipe fittings (12) and the plurality of upper frame embedded pipe fittings (13) have the same structure; a plurality of the threshold positioning screw rods (23) are correspondingly arranged with a plurality of embedded screw pipes, one end of which is used for screwing with the steel bar mechanical connecting piece (110); the inner side of the edge frame U-shaped template (3) is used for arranging the edge frame embedded pipe fitting (12), and the inner side of the upper frame U-shaped template (4) is used for arranging the upper frame embedded pipe fitting (13), and one locking screw rod (33) is used for penetrating one embedded pipe fitting hole.

2. The reusable combined template for pre-burying the interface component of the civil defense door according to claim 1, wherein: The first side buffer gap (201) is arranged between the threshold template (2) and the two edge frame U-shaped templates (3), and the first side connecting piece (202) is connected between the threshold template (2) and the edge frame U-shaped template (3); The second side buffer gap (301) is arranged between the upper frame U-shaped template (4) and the two edge frame U-shaped templates (3), and the second side connecting piece (302) is connected between the edge frame U-shaped template (3) and the upper frame U-shaped template (4).

3. The reusable combined template for assisting the pre-burying of the interface component of the civil defense door according to claim 2, characterized in that: In the vertical direction, the relative position of the edge frame U-shaped template (3) and the threshold template (2) is adjustable.

4. The reusable combined template for pre-burying the interface component of the civil defense door according to claim 2, wherein: The edge frame U-shaped template (3) comprises an intermediate plate (31) and two side plates (32), the side plates (32) are located on the side of the intermediate plate (31) away from the threshold template (2), and the two side plates (32) are respectively installed at both ends of the intermediate plate (31); The locking through hole (3201) is arranged on the side plate (32).

5. The reusable composite formwork for pre-burying the interface component of the civil defense door according to claim 1, characterized in that: An inner diameter of the locking through hole (3201) is greater than an outer diameter of the locking screw (33); An inner side of the locking through hole (3201) is provided with a position correcting pipe (35) sleeved on the locking screw (33), an outer diameter of the position correcting pipe (35) is equal to the inner diameter of the locking through hole (3201) and the inner diameter of the frame pre-embedded pipe (12), and an inner diameter of the position correcting pipe (35) is equal to the outer diameter of the locking screw (33); An end of the position correcting pipe (35) inserted into the locking through hole (3201) has a reduced outer diameter, and an end of the position correcting pipe (35) pointing to the locking nut (34) is provided with a limiting ring (351); A tapered pipe (352) is connected between the position correcting pipe (35) and the limiting ring (351), the tapered pipe (352) is coaxially sleeved on the position correcting pipe (35), and a smaller diameter end of the tapered pipe (352) is coaxially connected with the position correcting pipe (35); An annular backing plate (36) sleeved on the tapered pipe (352) is arranged between the limiting ring (351) and the frame U-shaped template (3); The annular backing plate (36) is arranged on the frame U-shaped template (3) and coaxial with the locking through hole (3201).

6. The reusable composite formwork for pre-burying the interface component of the civil defense door according to claim 1, wherein: Both ends of the locking screw (33) are provided with a side recess (3301) arranged in an axial direction and a static rack (331) arranged in an axial direction; The static rack (331) is detachably arranged on a groove bottom of the side recess (3301) and connected with the locking screw (33); The tooth groove (3310) is arranged on the static rack (331) and distributed along a length direction of the static rack (331).

7. The reusable composite formwork for pre-burying the interface component of the civil defense door according to claim 1, wherein: The locking nut (34) comprises a nut body (341), a rib pipe (342), an annular seat (343) and a first connecting rod (344), and the nut body (341) is screwed with the locking screw (33); The rib pipe (342) is coaxially connected with an end of the nut body (341) away from the frame U-shaped template (3); The annular seat (343) is coaxially and rotatably connected with the rib pipe (342), an inner hole wall of the annular seat (343) is provided with a radially arranged accommodating hole (34301), and the accommodating hole (34301) is provided with the coaxial first connecting rod (344); A first end of the first connecting rod (344) is connected with the movable rack (348), and a second end thereof is elastically connected with the annular seat (343).

8. The reusable composite formwork for pre-burying the interface component of the civil defense door according to claim 7, characterized in that: The second end of the first connecting rod (344) is connected with the annular seat (343) through a spring (347); The second end of the first connecting rod (344) is further provided with a coaxial second connecting rod (345), and the spring (347) is sleeved on the second connecting rod (345). The second connecting rod (345) is provided with a plug (346) at one end away from the first connecting rod (344), and the plug (346) is provided with a spigot (3461) connected with the annular seat (343) at one side away from the second connecting rod (345), and the plug (346) is used for plugging with the spigot (3461).

9. The reusable composite formwork for pre-burying the interface component of the civil defense door according to claim 1, wherein: The combined formwork for pre-burying the interface component of the auxiliary civil defense door further comprises a supporting assembly (5) for supporting the frame U-shaped formwork (3) and the upper frame U-shaped formwork (4).

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