Detachable civil air defense door frame positioning pin structure

Abstract

The utility model discloses a detachable civil air defence door frame positioning pin structure relates to civil air defence door frame technical field, including inclined pin tip, the top outer edge place swing joint of inclined pin tip has the connecting rod, the top fixed connection of connecting rod has the outer -threaded rod, the outer wall threaded connection of outer -threaded rod has the inner -threaded sleeve, the upper end periphery swing joint of inner -threaded sleeve has the link rod, the compatible place of link rod and inner -threaded sleeve all screw -fit connection has the fixed bolt, the top fixed connection of link rod has the fixed link. The utility model discloses by the traditional positioning pin is changed into the upper and lower pin combination form, two sections screw, and the lower end pin is implanted into the structure wall, and after the upper end pin is inserted into the civil air defence door frame positioning hole and is connected with the lower end pin, can ensure door frame accurate positioning and normal opening and closing of the later door leaf, is convenient for dismounting again, and saves time and labour, and will not cause the scrap of positioning pin.

Description

Technical Field

[0001] This utility model relates to the field of civil defense door frame technology, and in particular to a detachable civil defense door frame positioning pin structure. Background Technology

[0002] During the installation of air-raid shelter doors, the door frame positioning pin is a key component to ensure accurate positioning of the door frame and normal opening and closing of the door leaf later. During installation, it fixes the position of the door frame to ensure that the relative dimensions with the structural wall and embedded parts meet the design requirements. It also prevents the door frame from moving during concrete pouring or construction, ensures verticality and horizontality, provides a benchmark for door leaf installation, and ensures accurate alignment of components such as hinges and locks.

[0003] They are usually made of steel cylindrical or conical pins, with a diameter of 10-20mm and a length determined by the thickness of the door frame. Since the positioning pin and the positioning hole are both interference fit, and there are no special disassembly tools, pulling out the positioning pin is not only time-consuming and laborious, but also often damages the positioning pin, rendering it unusable, or even damages the air-raid shelter door frame. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a detachable positioning pin structure for air-raid shelter door frames. Its advantages lie in replacing the traditional positioning pin with a combination of upper and lower pins. By screwing the two ends together, the lower pin is inserted into the structural wall, while the upper pin is inserted into the positioning hole of the air-raid shelter door frame and connected to the lower pin. This ensures accurate positioning of the door frame and normal opening and closing of the door leaf, while also facilitating disassembly, saving time and effort, and preventing the positioning pin from becoming unusable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A detachable positioning pin structure for a civil defense door frame includes a beveled pin tip. A connecting rod is movably connected to the outer edge of the top of the beveled pin tip. An external threaded rod is fixedly connected to the top of the connecting rod. An internal threaded sleeve is threadedly connected to the outer wall of the external threaded rod. A connecting rod is movably connected to the upper periphery of the internal threaded sleeve. Fixing bolts are screwed into the mating parts of the connecting rod and the internal threaded sleeve. A fixing rod is fixedly connected to the top of the connecting rod.

[0007] The above technical solution involves replacing the traditional positioning pin with a combination of upper and lower pins. By twisting the two ends, the lower pin is inserted into the structural wall, and the upper pin is inserted into the positioning hole of the air-raid shelter door frame and connected to the lower pin. This ensures accurate positioning of the door frame and normal opening and closing of the door leaf, while also facilitating disassembly, saving time and effort, and preventing the positioning pin from being scrapped.

[0008] The present invention is further configured such that a connecting seat is fixedly connected to the top of the fixing rod, and a groove is provided on the top of the connecting seat.

[0009] The above technical solution facilitates screwing, causing the upper and lower pins to combine into a positioning pin, ensuring accurate positioning of the door frame.

[0010] The present invention is further provided that the bottom of the connecting rod is provided with a circular groove that is adapted to the internal threaded sleeve, and the surface of the circular groove that contacts the internal threaded sleeve is treated with wear resistance.

[0011] Through the above technical solution: the internal threaded sleeve plays a connecting role and is connected to the upper positioning pin by a fixing bolt, and the lower end is connected to the lower positioning pin by an external threaded rod.

[0012] The present invention is further configured such that a connector is fixedly connected to the top of the tip of the inclined pin, and a positioning bolt is screwed into the corresponding part of the connector and the connecting rod.

[0013] The above technical solution employs a threaded fastening method, where the tip of the beveled pin is securely assembled to the lower part of the positioning pin. The tip of the beveled pin is then embedded into the structural wall for a more stable and accurate fixation, preventing loosening.

[0014] The present invention is further provided that the bottom of the connecting rod is provided with an annular groove adapted to the plug-in, and the surface of the annular groove in contact with the plug-in is treated with wear resistance.

[0015] The above technical solutions ensure a secure connection, playing a crucial role in the stability of the positioning pin application.

[0016] The present invention is further configured such that a fixing seat is fixedly connected to the top of the external threaded rod, and a slot is formed on the top of the fixing seat.

[0017] The above technical solution facilitates screwing, with the lower positioning pin embedded in the structural wall. Subsequently, the upper positioning pin connects with the lower positioning pin, allowing the door frame to be securely installed at the air-raid shelter door opening.

[0018] The present invention is further configured such that the fixed seat is located at the upper end of the inner cavity of the internal threaded sleeve, and the bottom of the internal threaded sleeve is movably connected to the top end of the connecting rod.

[0019] The above technical solutions enable convenient disassembly and assembly of the positioning pins, and ensure precise vertical alignment of the pin body.

[0020] The present invention is further configured such that the material of the oblique pin tip, connecting rod, positioning bolt, external threaded rod, fixing seat, plug-in, connecting rod, fixing bolt, fixing rod, connecting seat and internal threaded sleeve is all martensitic steel.

[0021] The above technical solutions ensure the robustness of the material and guarantee the stability of the air-raid shelter door frame during installation.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. The detachable positioning pin structure for the air-raid shelter door frame is designed by replacing the traditional positioning pin with a combination of upper and lower pins. The two ends are screwed together to insert the lower pin into the structural wall, and the upper pin is inserted into the positioning hole of the air-raid shelter door frame and connected to the lower pin. This design ensures accurate positioning of the door frame and normal opening and closing of the door leaf, while also facilitating disassembly, saving time and effort, and preventing the positioning pin from being scrapped.

[0024] 2. The detachable positioning pin structure of the air-raid shelter door frame is equipped with a slanted pin tip, which is then inserted into the structural wall for secure fixation, making the positioning more accurate and less prone to loosening. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a detachable positioning pin structure for a civil defense door frame proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the upper accessory structure of a detachable positioning pin structure for a civil defense door frame proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the lower end accessory structure of a detachable positioning pin structure for a civil defense door frame proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the pin head structure of a detachable positioning pin structure for a civil defense door frame proposed in this utility model.

[0029] In the diagram: 1. Tip of the beveled pin; 2. Connecting rod; 3. Positioning bolt; 4. External threaded rod; 5. Fixing seat; 6. Slotted groove; 7. Insert connector; 8. Connecting rod; 9. Fixing bolt; 10. Fixing rod; 11. Connecting seat; 12. Groove; 13. Internal threaded sleeve. Detailed Implementation

[0030] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0031] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0032] Reference Figure 1-4A detachable positioning pin structure for a civil defense door frame includes a beveled pin tip 1. A connecting rod 2 is movably connected to the outer edge of the top of the beveled pin tip 1. An external threaded rod 4 is fixedly connected to the top of the connecting rod 2. An internal threaded sleeve 13 is threadedly connected to the outer wall of the external threaded rod 4. A connecting rod 8 is movably connected to the upper periphery of the internal threaded sleeve 13. Fixing bolts 9 are screwed into the mating parts of the connecting rod 8 and the internal threaded sleeve 13. A fixing rod 10 is fixedly connected to the top of the connecting rod 8. By changing the traditional positioning pin to a combination of upper and lower pins, the lower pin is screwed into the structural wall, and the upper pin is inserted into the positioning hole of the civil defense door frame and connected to the lower pin. This ensures accurate positioning of the door frame and normal opening and closing of the door leaf, facilitates disassembly, saves time and effort, and does not cause the positioning pin to be scrapped.

[0033] In this embodiment, a connecting seat 11 is fixedly connected to the top of the fixing rod 10. The top of the connecting seat 11 has a groove 12 for easy screwing, which causes the upper pin and the lower pin to combine into a positioning pin, ensuring accurate positioning of the door frame.

[0034] The bottom of the connecting rod 8 is provided with a circular groove that is compatible with the internal threaded sleeve 13. The surface of the circular groove that contacts the internal threaded sleeve 13 is treated with wear resistance. The internal threaded sleeve 13 plays a connecting role and is connected to the upper positioning pin by a fixing bolt 9. The lower end is connected to the lower positioning pin by screwing on the external threaded rod 4.

[0035] Furthermore, a connector 7 is fixedly connected to the top of the beveled pin tip 1. The connector 7 and the connecting rod 2 are screwed together with positioning bolts 3, which are fastened by threads. The beveled pin tip 1 is firmly assembled to the lower part of the positioning pin. The beveled pin tip 1 is embedded in the structural wall and thus fixed and stable, making the positioning more accurate and less prone to loosening. The bottom of the connecting rod 2 is provided with an annular groove that matches the connector 7. The surface of the annular groove that contacts the connector 7 is treated with wear resistance, and the connection is firm, which plays a crucial role in the stability of the positioning pin application.

[0036] The top of the external threaded rod 4 is fixedly connected to a fixing seat 5. The top of the fixing seat 5 has a slot 6 for easy screwing. The lower positioning pin is inserted into the structural wall. The upper positioning pin is then connected to the lower positioning pin to securely install the door frame to the air-raid shelter door opening.

[0037] The fixed seat 5 is located at the upper end of the inner cavity of the internal threaded sleeve 13. The bottom of the internal threaded sleeve 13 is movably connected to the top of the connecting rod 2. The positioning pin is easy to install and remove, and the pin body is vertically aligned accurately.

[0038] It is worth mentioning that the materials of the oblique pin tip 1, connecting rod 2, positioning bolt 3, external threaded rod 4, fixing seat 5, plug-in part 7, connecting rod 8, fixing bolt 9, fixing rod 10, connecting seat 11 and internal threaded sleeve 13 are all made of martensitic steel, which is strong and ensures the stability of the civil defense door frame installation.

[0039] Working principle: The plug-in 7 is inserted into the annular groove of the connecting rod 2 and then fixed by the positioning bolt 3. The inner threaded sleeve 13 is screwed around the outer threaded rod 4 until it is engaged with the connecting rod 2. The inner threaded sleeve 13 is also inserted into the circular groove of the connecting rod 8 and then fixed by the fixing bolt 9. In addition, when the inner threaded sleeve 13 is not engaged with the outer threaded rod 4, the lower pin can be inserted into the door opening structure wall by screwing the fixing seat 5. Subsequently, the connecting seat 11 is screwed to make the upper pin and the lower pin combine into a positioning pin to ensure accurate positioning of the door frame.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A detachable positioning pin structure for a civil defense door frame, comprising a beveled pin tip (1), characterized in that, A connecting rod (2) is movably connected to the outer edge of the top of the oblique pin tip (1). An external threaded rod (4) is fixedly connected to the top of the connecting rod (2). An internal threaded sleeve (13) is threadedly connected to the outer wall of the external threaded rod (4). A connecting rod (8) is movably connected to the upper periphery of the internal threaded sleeve (13). Fixing bolts (9) are screwed into the mating parts of the connecting rod (8) and the internal threaded sleeve (13). A fixing rod (10) is fixedly connected to the top of the connecting rod (8).

2. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The top of the fixing rod (10) is fixedly connected to a connecting seat (11), and the top of the connecting seat (11) is provided with a groove (12).

3. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The bottom of the connecting rod (8) is provided with a circular groove that is compatible with the inner threaded sleeve (13), and the surface of the circular groove that contacts the inner threaded sleeve (13) is treated with wear resistance.

4. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The top of the oblique pin tip (1) is fixedly connected to a connector (7), and the connector (7) and the connecting rod (2) are screwed together with positioning bolts (3).

5. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The bottom of the connecting rod (2) is provided with an annular groove that is compatible with the plug (7), and the surface of the annular groove that contacts the plug (7) is treated with wear resistance.

6. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The top of the external threaded rod (4) is fixedly connected to a fixing seat (5), and a slot (6) is formed on the top of the fixing seat (5).

7. A detachable positioning pin structure for a civil defense door frame according to claim 6, characterized in that, The fixed seat (5) is located at the upper end of the inner cavity of the internal threaded sleeve (13), and the bottom of the internal threaded sleeve (13) is movably connected to the top of the connecting rod (2).

8. The detachable positioning pin structure for a civil defense door frame according to claim 1, characterized in that, The materials of the oblique pin tip (1), connecting rod (2), positioning bolt (3), external threaded rod (4), fixing seat (5), plug-in part (7), connecting rod (8), fixing bolt (9), fixing rod (10), connecting seat (11) and internal threaded sleeve (13) are all martensitic steel.

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