Threshold-free civil air defense door pre-embedded steel bar installation mold

By designing a thresholdless air-raid shelter door pre-embedded steel bar installation mold and using positioning components and linkage structures to adjust the steel bar spacing, the problem of low positioning accuracy in existing technologies has been solved, and high-precision steel bar positioning and adaptation has been achieved.

CN224679163UActive Publication Date: 2026-08-25GUANGDONG TESAI CIVIL DEFENSE EQUIP CO LTD
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Patent Information

Application Number
CN202522113709.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2026-08-25
Estimated Expiration
2035-09-30

AI Technical Summary

Technical Problem

In existing technologies, the positioning accuracy of the pre-embedded steel bars in thresholdless air-raid shelter doors is low, making it difficult to meet construction requirements.

Method used

A thresholdless air defense door pre-embedded steel bar installation mold was designed, including mutually orthogonal positioning components, spacing adjustment structure and linkage structure. The spacing of multiple movable positioning holes can be adjusted through the linkage structure to adapt to air defense doors of different specifications.

Benefits of technology

It improves the positioning accuracy of steel bars, enabling it to adapt to different specifications of air-raid shelter doors and meet construction requirements.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a no -threshold civil air defence door pre -buried reinforcing steel bar installation mould, include: a plurality of positioning assembly, positioning assembly include: main positioning structure is equipped with two interval arrangement's fixed positioning hole, mobile positioning structure is installed in main positioning structure, and it can slip relative to main positioning structure, and it is equipped with mobile positioning hole, and it is equipped with a plurality of, and a plurality of mobile positioning structure symmetry sets up in the both sides of two fixed positioning hole, linkage structure is connected with a plurality of mobile positioning structure, is used for adjusting the interval of a plurality of mobile positioning structure simultaneously. The scheme can adjust the interval of a plurality of mobile positioning holes simultaneously through linkage structure, thereby can adapt to different specifications civil air defence door, relative to the manual positioning mode of drawing line through the use of ruler in the prior art, the scheme can effectively improve the positioning accuracy for reinforcing steel, and can adjust to adapt to different specifications civil air defence door, so that civil air defence door meets the construction requirement.
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Description

Technical Field

[0001] This utility model relates to the field of civil defense door processing technology, and in particular to the installation mold for pre-embedded steel bars in a thresholdless civil defense door. Background Technology

[0002] Thresholdless air-raid shelter doors (such as wartime protective airtight doors and airtight doors) are designed without a traditional concrete threshold at the bottom of the door frame. To ensure protective performance and structural stability, steel bars are installed at the bottom of the door frame, which are anchored to the base slab or foundation concrete. The steel bars at the bottom of the door frame serve to fix and resist pull-out, ensure overall stability and resistance to deformation, ensure force transmission and uniform stress distribution, and assist in construction positioning.

[0003] In existing technologies, the steel bars at the bottom of the door frame are usually manually positioned by workers using rulers and lines, which has low positioning accuracy and is not conducive to meeting construction requirements. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a thresholdless air defense door pre-embedded steel bar installation mold to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is: A thresholdless air-raid shelter door pre-embedded steel reinforcement installation mold, having mutually orthogonal first, second, and third directions; the installation mold includes: The positioning components are provided in a plurality of form, and the positioning components include: The main positioning structure is provided with two fixed positioning holes arranged at intervals along the first direction; A movable positioning structure is installed on the main positioning structure and can slide relative to the main positioning structure along a first direction. It is provided with movable positioning holes; there are multiple movable positioning structures, and the multiple movable positioning structures are symmetrically arranged on both sides of two fixed positioning holes. A linkage structure is connected to multiple said mobile positioning structures and is used to simultaneously adjust the spacing between the multiple mobile positioning structures.

[0006] As a further improvement to the above technical solution, the number of positioning components is set to two, and the two positioning components are arranged at intervals along the second direction.

[0007] As a further improvement to the above technical solution, a first spacing adjustment structure is provided between two adjacent positioning components, the first spacing adjustment structure comprising: A first mounting base, wherein the main positioning structure is mounted on the first mounting base, and the main positioning structure is slidable relative to the first mounting base along a second direction; A first adjusting screw extends along a second direction and is rotatably connected to the mounting base; The first adjusting seat is threadedly connected to the first adjusting screw; there are two of them, and the two first adjusting seats are respectively fixed to the two main positioning structures.

[0008] As a further improvement to the above technical solution, the first spacing adjustment structure further includes: The first guide rod is arranged parallel to the first adjusting screw and is fixed to the first mounting base; there are two of them, and the two first guide rods are respectively arranged on both sides of the first adjusting screw in a first direction; the main positioning structure is slidably connected to the first guide rod.

[0009] As a further improvement to the above technical solution, the main positioning structure is fixed with a first scale, which is used to indicate the distance between the two main positioning structures.

[0010] As a further improvement to the above technical solution, the linkage structure includes: The driving component is slidably connected to the main positioning structure along the second direction; The connection components are provided in multiple ways; the multiple connection components are respectively designated as a first connection component and a second connection component. The connecting component includes two connectors, with the two ends of each connector being a first connecting end and a second connecting end, respectively. The first connecting end is hinged to the driving component. The second connecting ends of the two connecting members of the first connecting assembly are respectively hinged to the main positioning structure and the movable positioning structure closest to the fixed positioning hole; The second connecting ends of the two connecting members of the first connecting assembly are respectively hinged to the two adjacent movable positioning structures.

[0011] As a further improvement to the above technical solution, a second spacing adjustment structure is provided between the driving component and the main positioning structure, the second spacing adjustment structure comprising: The second adjusting screw extends along the second direction and is rotatably connected to the main positioning structure. The second adjusting seat is threadedly connected to the second adjusting screw; the second adjusting seat is fixed to the driving component.

[0012] As a further improvement to the above technical solution, the second spacing adjustment structure further includes: The second guide rod is arranged parallel to the second adjusting screw and is fixedly connected to the main positioning structure; there are two of them, and the two second guide rods are respectively arranged on both sides of the second adjusting screw in the first direction; The driving component is slidably connected to the second guide rod.

[0013] As a further improvement to the above technical solution, the movable positioning structure is fixed with a second scale, which is used to indicate the distance between two adjacent movable positioning holes, or to indicate the distance between the movable positioning hole closest to the fixed positioning hole and the fixed positioning hole.

[0014] As a further improvement to the above technical solution, both the fixed positioning hole and the movable positioning hole can be detachably connected to a wear replacement sleeve.

[0015] The beneficial effects of this utility model are as follows: In the length direction of the corresponding door frame (i.e., the first direction), since the distance between two adjacent steel bars at the center of the lower end of different specifications of the air-raid shelter door is constant, and the spacing of the remaining steel bars is constant, two fixed positioning holes with a constant distance are set in the middle of the main positioning structure to position the two steel bars at the center.

[0016] Other reinforcing bars are arranged at equal intervals along the length of the corresponding door frame, with the distance between adjacent reinforcing bars varying depending on the size of the air-raid shelter door. This solution utilizes a linkage structure to simultaneously adjust the spacing of multiple movable positioning holes, thus adapting to different sizes of air-raid shelter doors. Compared to existing technologies that use rulers and lines for manual positioning, this solution effectively improves the positioning accuracy of the reinforcing bars and can be adjusted to fit different sizes of air-raid shelter doors, ensuring the doors meet construction requirements.

[0017] This utility model is applicable to the field of civil defense door processing technology. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is an exploded structural diagram of an embodiment of the present invention.

[0020] In the figure, 100 is the main positioning structure; 110 is the fixed positioning hole; 120 is the first scale; 200 is the moving positioning structure; 210 is the moving positioning hole; 220 is the second scale; 300 is the linkage structure; 310 is the driving component; 321 is the first connecting assembly; 322 is the second connecting assembly; 323 is the connecting component; 330 is the second spacing adjustment structure; 331 is the second adjusting screw; 332 is the second adjusting seat; 333 is the second guide rod; 400 is the first spacing adjustment structure; 410 is the first mounting seat; 420 is the first adjusting screw; 430 is the first adjusting seat; 440 is the first guide rod; and 500 is the wear replacement sleeve. Detailed Implementation

[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0022] Reference Figure 1 and Figure 2 The thresholdless air-raid shelter door pre-embedded steel bar installation mold has a first direction, a second direction, and a third direction. The first direction, the second direction, and the third direction are orthogonally set to each other. According to the figure, the first direction is set parallel to the X-axis in the figure, the second direction is set parallel to the Y-axis in the figure, and the third direction is set parallel to the Z-axis in the figure.

[0023] The installation mold for the embedded steel bars of the thresholdless air-raid shelter door includes several positioning components. Specifically, in this embodiment, the number of positioning components is set to two, which are arranged along a second direction and are symmetrically positioned. In other embodiments, the number of positioning components can be selected according to actual needs.

[0024] Specifically, the positioning components include: main positioning structure 100, mobile positioning structure 200, and linkage structure 300.

[0025] The main positioning structure 100 is configured as a plate-shaped structure. Two fixed positioning holes 110 are opened in the middle of the main positioning structure 100. The two fixed positioning holes 110 are arranged along the first direction and are symmetrical about the center of the main positioning structure 100. The fixed positioning holes 110 are circular holes and penetrate the main positioning structure 100 along the third direction.

[0026] Along the length of the corresponding door frame (i.e., the first direction), since the distance between two adjacent steel bars at the center of the lower end of different specifications of the air-raid shelter door is constant, while the spacing of the remaining steel bars remains unchanged, two fixed positioning holes 110 with a constant distance are set in the middle of the main positioning structure 100 to position the two central steel bars.

[0027] Specifically, in this embodiment, a first spacing adjustment structure 400 is provided between two adjacent positioning components. Specifically, the first spacing adjustment structure 400 includes: a first mounting base 410, a first adjusting screw 420, a first adjusting seat 430, and a first guide rod 440.

[0028] The main positioning structure 100 is slidably installed on the first mounting base 410. The main positioning structure 100 can slide relative to the first mounting base 410 along the first direction. In the width direction of the corresponding door frame, the distance between the two main positioning structures 100 can be adjusted, so that the distance between the two adjacent fixed positioning holes 110 in the second direction can be adjusted to meet the needs of different specifications of air-raid shelter doors.

[0029] The first mounting base 410 and the main positioning structure 100 are provided with guide components, which are conventional guide rails and guide groove structures.

[0030] The first adjusting screw 420 extends along the second direction and is rotatably connected to the first mounting base 410. Specifically, in this embodiment, the first adjusting screw 420 is configured as a bidirectional screw with two sections of threaded structure with opposite directions. In other embodiments, the first adjusting screw 420 can also be configured as a screw with only one section of threaded structure. Those skilled in the art can select the specific structure of the first adjusting screw 420 according to actual needs.

[0031] The first adjusting seat 430 is threadedly connected to the first adjusting screw 420. The number of the first adjusting seats 430 is set to two. The two first adjusting seats 430 are set one-to-one with the two main positioning structures 100, and the first adjusting seat 430 is fixedly connected to the corresponding main positioning structure 100. Thus, when the first adjusting seat 430 moves in the second direction, it drives the main positioning structure 100 to move in the second direction, so as to adjust the distance between the two main positioning structures 100.

[0032] The first guide rod 440 is arranged parallel to the first adjusting screw 420, and the first guide rod 440 is fixed to the first mounting base 410. Only one first guide rod 440 is provided, and it is positioned beside the first adjusting screw 420. The main positioning structure 100 is slidably connected to the first guide rod 440. By providing the first guide rod 440, the main positioning structure 100 can be guided, thereby preventing displacement of the main positioning structure 100 during position adjustment.

[0033] In other embodiments, other structures can be used to fix the distance between the two positioning components in the second direction, such as using a plate-like component with screws to fix the main positioning structure 100 of the two positioning components. Those skilled in the art can select the fixing device for the two positioning components according to actual needs.

[0034] One of the main positioning structures 100 is fixed with a first scale 120, which is used to indicate the distance between the two main positioning structures 100, thus avoiding the trouble for the staff to find another ruler to measure the distance between the two main positioning structures 100 during adjustment.

[0035] Specifically, in this embodiment, a wear replacement sleeve 500 is detachably installed inside the movable positioning hole 210. By setting the wear replacement sleeve 500, a new wear replacement sleeve 500 can be replaced after long-term use of this installation mold, so as to ensure the positioning accuracy of the installation mold for the reinforcing bars.

[0036] Specifically, in this embodiment, the wear replacement sleeve 500 is detachably connected to the main positioning structure 100 by a screw, the screw being threaded into the main positioning structure 100, and the tail end of the screw abutting against the outer wall of the wear replacement sleeve 500. In other embodiments, other detachable structures can also be selected according to actual needs. Those skilled in the art can select the detachable structure between the wear replacement sleeve 500 and the main positioning structure 100 according to actual needs.

[0037] The movable positioning structure 200 is installed on the main positioning structure 100, and the movable positioning structure 200 and the main positioning structure 100 are slidably connected along the first direction. The number of movable positioning structures 200 is set to multiple, and the multiple movable positioning structures 200 are symmetrically arranged on both sides of the two fixed positioning holes 110.

[0038] The movable positioning structure 200 has a movable positioning hole 210 that penetrates the movable positioning structure 200 along a third direction. The main positioning structure 100 has a through hole that mates with the movable positioning hole 210. The movable positioning structure 200 can slide relative to the main positioning structure 100 along a first direction, thereby adjusting the distance between the movable positioning hole 210 and the fixed positioning hole 110 to meet the needs of different specifications of air-raid shelter doors.

[0039] Specifically, in this embodiment, a wear replacement sleeve 500 is detachably installed inside the movable positioning hole 210. By setting the wear replacement sleeve 500, a new wear replacement sleeve 500 can be replaced after long-term use of this installation mold, so as to ensure the positioning accuracy of the installation mold for the reinforcing bars.

[0040] Specifically, in this embodiment, the wear replacement sleeve 500 is detachably connected to the movable positioning structure 200 by a screw, the screw being threadedly connected to the movable positioning structure 200, and the tail end of the screw abutting against the outer wall of the wear replacement sleeve 500. In other embodiments, other detachable structures can also be selected according to actual needs. Those skilled in the art can select the detachable structure between the wear replacement sleeve 500 and the movable positioning structure 200 according to actual needs.

[0041] The linkage structure 300 is connected to multiple moving positioning structures 200, and the linkage structure 300 is used to adjust the spacing between the multiple moving positioning structures 200 simultaneously.

[0042] Specifically, in this embodiment, the linkage structure 300 includes: a driving component 310 and a connecting component.

[0043] The driving member 310 is a rod-shaped component. The driving member 310 is slidably connected to the main positioning structure 100. The driving member 310 can move relative to the main positioning structure 100 in the second direction.

[0044] Specifically, in this embodiment, a guide rail and a guide groove are provided between the driving member 310 and the main positioning structure 100. The guide rail is fixedly set on the main positioning structure 100, and the guide groove is set on the driving member 310. In other embodiments, the guide rail can also be fixedly set on the driving member 310 and the guide groove can be set on the main positioning structure 100. Those skilled in the art can select the specific setting position of the guide rail and the guide groove according to actual needs.

[0045] The number of connecting components is set to multiple, and the multiple connecting components are respectively designated as the first connecting component 321 and the second connecting component 322.

[0046] The connecting assembly includes two connectors 323, with the two ends of each connector 323 designated as a first connecting end and a second connecting end, respectively. The first connecting end is hingedly connected to the drive component 310.

[0047] The second connecting ends of the two connecting pieces 323 of the first connecting assembly 321 are respectively hinged to the main positioning structure 100 and the movable positioning structure 200 closest to the fixed positioning hole 110. This allows the distance between the movable positioning structure 200 closest to the main positioning structure 100 and the fixed positioning hole 110 to be adjusted when the driving member 310 moves relative to the main positioning structure 100 in the second direction, thereby adjusting the spacing between the movable positioning hole 210 and the fixed positioning hole 110 to meet the needs of different specifications of air-raid shelter doors.

[0048] The second connecting ends of the two connecting parts 323 of the second connecting assembly 322 are respectively hinged to two adjacent movable positioning structures 200, so that when the driving member 310 moves in the second direction, the distance between multiple movable positioning structures 200 can be adjusted at the same time, thereby adjusting the spacing of multiple movable positioning holes 210 to meet the needs of different specifications of air-raid shelter doors.

[0049] Specifically, in this embodiment, a second spacing adjustment structure 330 is provided between the driving component 310 and the main positioning structure 100.

[0050] Specifically, the second spacing adjustment structure 330 includes: a second adjusting screw 331, a second adjusting seat 332, and a second guide rod 333.

[0051] The second adjusting screw 331 extends along the second direction and is rotatably connected to the main positioning structure 100.

[0052] The second adjusting seat 332 is threadedly connected to the second adjusting screw 331, and the second adjusting seat 332 is fixedly connected to the movable positioning structure 200, so that when the second adjusting seat 332 moves in the second direction, it drives the movable positioning structure 200 to move in the second direction.

[0053] The second guide rod 333 is arranged parallel to the second adjusting screw 331, and is fixed to the main positioning structure 100. Two second guide rods 333 are provided, arranged along the first direction, and respectively located on both sides of the second adjusting screw 331. The movable positioning structure 200 is slidably connected to the second guide rods 333. By providing the second guide rods 333, the movable positioning structure 200 can be guided, thereby preventing displacement when adjusting its position.

[0054] Specifically, in this embodiment, at least one movable positioning structure 200 is fixed with a second scale 220. The second scale 220 is used to indicate the distance between two adjacent movable positioning structures 200, or to indicate the distance between the movable positioning structure 200 closest to the fixed positioning hole 110 and the fixed positioning hole 110.

[0055] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A thresholdless air-raid shelter door pre-embedded steel bar installation mold, characterized in that: The mounting mold has three mutually orthogonal directions: a first direction, a second direction, and a third direction; the mounting mold includes: The positioning components are provided in a plurality of form, and the positioning components include: The main positioning structure is provided with two fixed positioning holes arranged at intervals along the first direction; A movable positioning structure is installed on the main positioning structure and can slide relative to the main positioning structure along a first direction. It is provided with movable positioning holes; there are multiple movable positioning structures, and the multiple movable positioning structures are symmetrically arranged on both sides of two fixed positioning holes. A linkage structure is connected to multiple said mobile positioning structures and is used to simultaneously adjust the spacing between the multiple mobile positioning structures.

2. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 1, characterized in that: The number of positioning components is set to two, and the two positioning components are arranged at intervals along the second direction.

3. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 2, characterized in that: A first spacing adjustment structure is provided between two adjacent positioning components, the first spacing adjustment structure comprising: A first mounting base, wherein the main positioning structure is mounted on the first mounting base, and the main positioning structure is slidable relative to the first mounting base along a second direction; A first adjusting screw extends along a second direction and is rotatably connected to the mounting base; The first adjusting seat is threadedly connected to the first adjusting screw; there are two of them, and the two first adjusting seats are respectively fixed to the two main positioning structures.

4. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 3, characterized in that: The first spacing adjustment structure further includes: The first guide rod is arranged parallel to the first adjusting screw and is fixed to the first mounting base; the main positioning structure is slidably connected to the first guide rod.

5. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 2, characterized in that: The main positioning structure is fixed with a first scale, which is used to indicate the distance between the two main positioning structures.

6. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 1, characterized in that: The linkage structure includes: The driving component is slidably connected to the main positioning structure along the second direction; The connection components are provided in multiple ways; the multiple connection components are respectively designated as a first connection component and a second connection component. The connecting component includes two connectors, with the two ends of each connector being a first connecting end and a second connecting end, respectively. The first connecting end is hinged to the driving component. The second connecting ends of the two connecting members of the first connecting assembly are respectively hinged to the main positioning structure and the movable positioning structure closest to the fixed positioning hole; The second connecting ends of the two connecting members of the first connecting assembly are respectively hinged to the two adjacent movable positioning structures.

7. The thresholdless air-raid shelter door pre-embedded steel bar installation mold according to claim 6, characterized in that: A second spacing adjustment structure is provided between the driving component and the main positioning structure, the second spacing adjustment structure comprising: The second adjusting screw extends along the second direction and is rotatably connected to the main positioning structure. The second adjusting seat is threadedly connected to the second adjusting screw; the second adjusting seat is fixed to the driving component.

8. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 7, characterized in that: The second spacing adjustment structure also includes: The second guide rod is arranged parallel to the second adjusting screw and is fixedly connected to the main positioning structure; there are two of them, and the two second guide rods are respectively arranged on both sides of the second adjusting screw in the first direction; The driving component is slidably connected to the second guide rod.

9. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 1, characterized in that: The movable positioning structure is fixed with a second scale, which is used to indicate the distance between two adjacent movable positioning holes, or to indicate the distance between the movable positioning hole closest to the fixed positioning hole and the fixed positioning hole.

10. The installation mold for embedded steel bars in a thresholdless air-raid shelter door according to claim 1, characterized in that: Both the fixed positioning hole and the movable positioning hole are detachably connected to wear replacement sleeves.