A shaping device for welding of a civil air defense door framework
The shaping device, which combines an electric push rod and a magnetic block, solves the problem of controlling the hammering force, enabling high-quality welding and shaping of the air defense door frame, and improving shaping accuracy and welding quality.
Patent Information
- Application Number
- CN202521804823.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-25
AI Technical Summary
During the welding process of the air-raid shelter door frame, it is difficult to control the hammering force during shaping, which can lead to damage to the steel or insufficient shaping accuracy, affecting the welding quality.
The shaping device, which uses an electric push rod and a magnetic block, adjusts the height of the hammer base through a limiting structure to achieve precise control of the hammering force. Combined with a buffer structure, it avoids damage to the steel and improves the shaping accuracy.
Effectively control the hammering force to avoid damage to the steel, improve the quality of the welded civil defense door frame, and meet the shaping requirements.
Smart Images

Figure CN224673525U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of civil defense door engineering technology, specifically a shaping device for welding the frame of a civil defense door. Background Technology
[0002] In the field of civil defense engineering, civil defense doors are key protective facilities that resist shock waves and isolate toxic gases. Their structural stability and safety are of paramount importance. The frame of the civil defense door, as the core load-bearing component, is usually made of various steel materials spliced together by welding. Its welding quality directly determines the overall performance of the civil defense door.
[0003] Before welding the frame of a civil defense door, workers usually need to hammer the deformed steel during transportation to reshape it. However, it is difficult to control the hammering force. Excessive hammering force can damage the steel, while insufficient force can not achieve the required shaping accuracy, resulting in a decrease in the quality of the welded civil defense door frame and making it difficult to meet the shaping requirements. Therefore, we need to propose a shaping device for welding civil defense door frames. Utility Model Content
[0004] The purpose of this invention is to provide a shaping device for welding the frame of a civil defense door. The steel to be shaped is placed on a shaping table, and an electric push rod is activated to lift the hammer seat via a magnetic block. The height of the hammer seat is limited by an adjustable limiting structure, allowing for adjustment of the distance at which the hammer seat strikes the steel, thus controlling the hammering force. This solution avoids excessive hammering force that could damage the steel or insufficient force that would fail to achieve the desired shaping accuracy, thereby improving the quality of the welded civil defense door frame and meeting the shaping requirements for civil defense door frames, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaping device for welding the frame of a civil defense door, comprising a shaping table, a shaping frame bolted to the top of the shaping table, an electric push rod bolted to the top of the shaping frame, a lifting seat bolted to the push rod portion of the electric push rod passing through the shaping frame, a magnet block provided at the bottom of the lifting seat, a hammering seat for hammering the civil defense door frame being magnetically connected to the bottom of the magnet block, a limiting structure for limiting the rising height of the hammering seat being installed in the inner cavity of the shaping frame, and a buffer structure for buffering the contact force between the magnet block and the surface of the hammering seat.
[0006] Preferably, the limiting structure includes a limiting frame located in the inner cavity of the shaping frame, with support blocks integrally formed on both sides of the limiting frame, positioning holes opened on the surface of the support blocks, and adjustment holes opened at equal intervals on the surface of the shaping frame, the adjustment holes and the positioning holes being fixed together by bolts, and a support groove adapted to the support blocks being opened on the inner side wall of the limiting frame.
[0007] Preferably, the surface of the shaping frame is provided with scale lines, and the position of the scale lines corresponds to the position of the positioning holes.
[0008] Preferably, both sides of the hammer base are integrally formed with sliders, and the surface of the sliders is slidably connected to the inner cavity of the support groove.
[0009] Preferably, the buffer structure includes a movable sleeve integrally formed on the surface of the lifting seat and a movable rod adapted to the movable sleeve. The bottom end of the movable rod is bolted to a connecting seat, the bottom end of the connecting seat is bolted to a magnet block, and the top end of the movable rod is integrally formed with a limiting block.
[0010] Preferably, a reinforcing block is welded and fixed to the bottom end of the shaping frame, and the bottom end of the reinforcing block is welded and fixed to the upper surface of the shaping table, and the reinforcing block is arranged in a triangular shape.
[0011] Preferably, the upper surface of the shaping table is integrally formed with a positioning seat, the positioning seat is L-shaped, the top of the positioning seat is integrally formed with a threaded sleeve, the inner cavity of the threaded sleeve is threadedly connected with a self-locking screw, the bottom end of the self-locking screw is rotatably connected to a fixing plate through a bearing, and the top end of the self-locking screw is welded and fixed with a button block.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a shaping device for welding the frame of a civil defense door. Through the setting of a limiting structure, the height of the hammering seat can be adjusted, thereby adjusting the distance between the hammering seat and the steel being welded. Adjusting the hammering distance allows for adjustment of the hammering force. The cooperation of an electric push rod and a magnetic block avoids manual hammering and shaping of the steel, reducing the workload of workers. This solution prevents excessive hammering force from damaging the steel or insufficient force from failing to achieve the desired shaping accuracy, thus improving the quality of the welded civil defense door frame and meeting the shaping requirements for civil defense door frames.
[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of a partial cross-section of the present invention; Figure 4 This is a top view of the structure of this utility model.
[0015] In the diagram: 1. Shaping table; 2. Shaping frame; 3. Electric push rod; 4. Lifting seat; 5. Hammering seat; 6. Limiting structure; 61. Limiting frame; 62. Support block; 63. Positioning hole; 64. Adjustment hole; 65. Support groove; 7. Buffer structure; 71. Movable sleeve; 72. Movable rod; 73. Connecting seat; 74. Limiting block; 8. Sliding block; 9. Reinforcing block; 10. Positioning seat; 11. Threaded sleeve; 12. Self-locking screw; 13. Fixing plate; 14. Magnet block. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-4 This utility model provides a technical solution: a shaping device for welding the frame of a civil defense door, including a shaping table 1, a shaping frame 2 bolted to the top of the shaping table 1, an electric push rod 3 bolted to the top of the shaping frame 2, the push rod part of the electric push rod 3 passing through the shaping frame 2 and bolted to a lifting seat 4, a magnet block 14 provided at the bottom of the lifting seat 4, a hammering seat 5 for hammering the civil defense door frame being magnetically connected to the bottom of the magnet block 14, a limiting structure 6 for limiting the rising height of the hammering seat 5 installed in the inner cavity of the shaping frame 2, and a buffer structure 7 for buffering the contact force between the magnet block 14 and the surface of the hammering seat 5; In use, first place the steel to be shaped for welding on the shaping table 1, then adjust the position of the limiting structure 6 to adjust the height of the hammer seat 5, and start the electric push rod 3. The push rod part of the electric push rod 3 drives the lifting seat 4 to move downward. The lifting seat 4 contacts the hammer seat 5 through the magnet block 14. The lifting seat 4 rises, causing the magnet block 14 to rise, which in turn drives the hammer seat 5 to rise. When the hammer seat 5 contacts the limiting structure 6, the lifting seat 4 continues to rise, causing the magnet block 14 to separate from the hammer seat 5. When the hammer seat 5 is under its own weight, it descends to hammer and shape the steel at the bottom. According to the above method, the hammer seat 5 is repeatedly driven to rise by the magnet block 14. Then the hammer seat 5 separates from the magnet block 14 to realize the hammering operation on the bottom welded steel. By adjusting the hammering distance of the hammer seat 5 to the welded steel, the hammering force can be adjusted. The above scheme avoids the problem of excessive hammering force causing damage to the steel or insufficient force failing to achieve the shaping accuracy, thus improving the quality of the welded civil defense door frame and meeting the shaping requirements of the civil defense door frame.
[0018] The electric linear actuator 3 is connected to the power supply equipment via a power cord. The electric linear actuator 3 is also connected to a telescopic button via the power cord to control the extension and retraction of the electric linear actuator 3. The model of the electric linear actuator 3 is DT300.
[0019] The limiting structure 6 includes a limiting frame 61 located inside the forming frame 2. Support blocks 62 are integrally formed on both sides of the limiting frame 61. Positioning holes 63 are opened on the surface of the support blocks 62. Adjustment holes 64 are opened at equal intervals on the surface of the forming frame 2. The adjustment holes 64 and the positioning holes 63 are fixed together by bolts. The inner side wall of the limiting frame 61 is provided with a support groove 65 that matches the support blocks 62. Adjusting the position of the limiting frame 61 causes the limiting frame 61 to drive the support blocks 62 to move, so that the support blocks 62 slide in the groove. When the position of the adjustment hole 64 is aligned with the position of the positioning hole 63, the position of the limiting frame 61 on the forming frame 2 can be fixed by bolts and nuts. By setting a number of adjustment holes 64 and adjusting the position of the positioning hole 63 on different adjustment holes 64, the limiting height of the hammer seat 5 can be adjusted.
[0020] This embodiment also includes a rubber pad adhered to the lower surface of the hammer base 5. The rubber pad is used to prevent damage to the surface of the welded steel when the hammer base 5 hammers the welded steel.
[0021] The surface of the shaping frame 2 is provided with scale lines, and the position of the scale lines corresponds to the position of the positioning hole 63. When installing or adjusting the limiting frame 61, the position of the positioning hole 63 can be intuitively understood through the scale lines, so as to accurately determine the installation height of the limiting frame 61. The scale lines provide a clear reference for the installation and adjustment of the limiting frame 61, enabling operators to quickly and accurately set the height of the limiting frame 61, improving work efficiency, ensuring the accuracy of the limit, and further improving the shaping quality.
[0022] Both sides of the hammer base 5 are integrally formed with sliders 8. The surface of the sliders 8 is slidably connected to the inner cavity of the support groove 65. The sliders 8 support both sides of the hammer base 5 to prevent the angle from shifting during hammering and improve the stability during hammering.
[0023] The buffer structure 7 includes a movable sleeve 71 integrally formed on the surface of the lifting seat 4 and a movable rod 72 adapted to the movable sleeve 71. The bottom end of the movable rod 72 is bolted to a connecting seat 73, and the bottom end of the connecting seat 73 is bolted to the magnet block 14. The top end of the movable rod 72 is integrally formed with a limiting block 74. When the lifting seat 4 drives the magnet block 14 to move downward and contact the hammer seat 5, the movable rod 72 moves inside the movable sleeve 71, causing the movable rod 72 to rise. The distance the movable rod 72 rises will buffer the force generated at the moment of contact. By setting the limiting block 74, the movable rod 72 is prevented from leaving the inner cavity of the movable sleeve 71 due to gravity when the lifting seat 4 moves upward.
[0024] A reinforcing block 9 is welded and fixed to the bottom end of the shaping frame 2. The bottom end of the reinforcing block 9 is welded and fixed to the upper surface of the shaping table 1. The reinforcing block 9 is triangular in shape and is welded between the bottom end of the shaping frame 2 and the shaping table 1. The stability of the triangle is used to enhance the firmness of the connection between the shaping frame 2 and the shaping table 1.
[0025] The upper surface of the shaping table 1 is integrally formed with a positioning seat 10, which is L-shaped. The top of the positioning seat 10 is integrally formed with a threaded sleeve 11. The inner cavity of the threaded sleeve 11 is threadedly connected to a self-locking screw 12. The bottom end of the self-locking screw 12 is rotatably connected to a fixing plate 13 through a bearing. A button block is welded and fixed to the top of the self-locking screw 12. The blast door frame is placed on the shaping table 1 so that it rests against the side of the L-shaped positioning seat 10. Rotating the button block causes the self-locking screw 12 to rotate inside the threaded sleeve 11. The self-locking screw 12 pushes the fixing plate 13 downward, pressing and fixing the blast door frame onto the shaping table 1, preventing the frame from shifting during the shaping process and ensuring the accuracy of the shaping position.
[0026] In practical use: First, place the steel to be shaped for welding on the shaping table 1. Then, adjust the position of the limiting bracket 61 on the shaping bracket 2, aligning the positioning hole 63 with the adjustment hole 64. Connect and lock the positioning hole 63 and adjustment hole 64 with bolts to fix the position of the limiting bracket 61 on the shaping bracket 2. Then, turn the knob clockwise. Through the cooperation of the self-locking screw 12 and the threaded sleeve 11, the self-locking screw 12 pushes the fixing plate 13 downward to clamp the steel. Next, start the electric push rod 3 to push the lifting seat 4 downward. The magnet block 14 at the bottom of the moving connecting seat 73 contacts the hammering seat 5, and the hammering seat 5 is attracted by the magnet block 14. Then it rises and makes the hammering seat 5 contact the limiting frame 61. The magnet block 14 continues to rise, causing the hammering seat 5 and the magnet block 14 to separate. When the magnetic attraction force decreases, the hammering seat 5 moves downward by its own gravity to hammer and shape the frame steel. The above scheme avoids the problem of excessive hammering force causing damage to the steel or insufficient force failing to achieve the shaping accuracy, thus improving the quality of the welded civil defense door frame and meeting the shaping requirements of the civil defense door frame.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A shaping device for welding the frame of a civil defense door, characterized in that, include: A shaping table (1) is connected to a shaping frame (2) at the top of the shaping table (1). An electric push rod (3) is installed at the top of the shaping frame (2). The push rod part of the electric push rod (3) passes through the shaping frame (2) and is connected to a lifting seat (4). The bottom end of the lifting seat (4) is magnetically connected to a hammering seat (5) for hammering the frame of the air defense door through a magnet block (14). The inner cavity of the shaping frame (2) is equipped with a limiting structure (6) for limiting the rising height of the hammer base (5). It also includes a buffer structure (7) for buffering the contact force between the magnet block (14) and the surface of the hammer base (5).
2. The shaping device for welding the frame of a civil defense door according to claim 1, characterized in that: The limiting structure (6) includes a limiting frame (61) located in the inner cavity of the shaping frame (2). Support blocks (62) are integrally formed on both sides of the limiting frame (61), and positioning holes (63) are opened on the surface of the support blocks (62). The surface of the shaping frame (2) is provided with equal-distance adjustment holes (64), and the adjustment holes (64) and the positioning holes (63) are fixed together by bolts. The inner side wall of the limiting frame (61) is provided with a support groove (65) that is compatible with the support block (62).
3. The shaping device for welding the frame of a civil defense door according to claim 2, characterized in that: The surface of the shaping frame (2) is provided with scale lines, and the position of the scale lines corresponds to the position of the positioning hole (63).
4. The shaping device for welding the frame of a civil defense door according to claim 2, characterized in that: Both sides of the hammer base (5) are integrally formed with sliders (8), and the surface of the sliders (8) is slidably connected to the inner cavity of the support groove (65).
5. The shaping device for welding the frame of a civil defense door according to claim 1, characterized in that: The buffer structure (7) includes a movable sleeve (71) integrally formed on the surface of the lifting seat (4) and a movable rod (72) adapted to the movable sleeve (71). The bottom end of the movable rod (72) is connected to a connecting seat (73), the bottom end of the connecting seat (73) is connected to the top end of the magnet block (14), and the top end of the movable rod (72) is integrally formed with a limiting block (74).
6. The shaping device for welding the frame of a civil defense door according to claim 1, characterized in that: The bottom end of the shaping frame (2) is connected to a reinforcing block (9), the bottom end of the reinforcing block (9) is connected to the upper surface of the shaping table (1), and the reinforcing block (9) is triangular in shape.
7. The shaping device for welding the frame of a civil defense door according to claim 1, characterized in that: The upper surface of the shaping table (1) is integrally formed with a positioning seat (10), which is L-shaped. The top of the positioning seat (10) is integrally formed with a threaded sleeve (11), and the inner cavity of the threaded sleeve (11) is threadedly connected with a self-locking screw (12). The bottom end of the self-locking screw (12) is rotatably connected with a fixing plate (13), and the top end of the self-locking screw (12) is connected with a button block.