Novel welding tool for civil air defense door

Abstract

This utility model discloses a novel welding fixture for air-raid shelter doors, relating to the technical field of air-raid shelter door production. The utility model includes a base, a support plate, a welding torch, a movable plate, and a pad. A limit plate is fixed to the top of the base, and a fixing strip is fixed to the long side of the base away from the limit plate. A support box is fixed to the top of the limit plate, and a fixing sleeve is movably connected inside the support box. A support plate is fixed to the top of the fixing sleeve, and a welding torch is movably connected through the support plate. A pad is provided on the top of the base between the limit plate and the fixing strip, and a movable plate is provided on the top of the pad. Fixing plates are symmetrically fixed to the top of the movable plate near the long side of the fixing strip, and a clamping screw is vertically threaded through the fixing plate. This utility model, by setting up a base, support plate, welding torch, movable plate, and pad, solves the problems of inconvenient adjustment of welding fixtures for different air-raid shelter door welding positions and the easy generation of vibration during welding that affects the welding quality of the air-raid shelter doors.

Description

Technical Field

[0001] This utility model belongs to the technical field of civil defense door production, and in particular relates to a new type of welding fixture for civil defense doors. Background Technology

[0002] Civil defense doors are core protective facilities in civil air defense projects, used to isolate threats such as shock waves, toxic gases, and radiation during wartime or emergency situations, ensuring the safety of personnel and supplies. Their design must comply with national standards such as the "Quality Control Standard for Protective Equipment in Civil Air Defense Projects" (RFJ 01-2015). Civil defense doors have various structural components, some of which require welding fixtures to secure connections. However, in actual use, they still have the following drawbacks:

[0003] During the welding process of air-raid shelter doors, the welding gun usually needs to be set to the welding position. During the welding operation, when facing workpieces with different weld seam positions, it is necessary to change the position of the welding gun. The adjustment operation for different air-raid shelter doors is not convenient.

[0004] Secondly, during the welding of air-raid shelter doors, the doors are usually restricted directly by the sheet metal on both sides. However, due to errors and the different dimensions of the sealing structures installed on the doors, the doors are prone to vibration during welding, which affects the welding quality. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of welding fixture for air-raid shelter doors. By setting up a base, support plate, welding gun, movable plate and pad, it solves the problems that the welding fixture is not convenient to adjust the welding position of different air-raid shelter doors, and that vibration is easily generated during the welding process, which affects the welding quality of the air-raid shelter doors.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a novel welding fixture for air-raid shelter doors, comprising a base, a support plate, a welding torch, a movable plate, and a pad. A limit plate is fixed to one long side of the top of the base. A fixing strip is fixed to the long side of the top of the base away from the limit plate. A support box is fixed to the top of the limit plate, and the top of the support box is open. A fixing sleeve is movably connected inside the support box, and a support plate is fixed to the top of the fixing sleeve. A welding torch is movably connected through the support plate. A pad is provided on the top of the base between the limit plate and the fixing strip, and a [missing information - likely a design element or feature] is provided on the top of the pad. The movable plate has fixed plates symmetrically fixed at its top near the long side of the fixed strip. A clamping screw is vertically threaded through the fixed plate and positioned between the movable plate and the fixed strip. During operation, the movable plate is supported on the working plane by the base and provides support for the air-raid shelter door components to be welded. The welding gun is supported on the fixed strip by the support plate. During operation, the welding gun welds the air-raid shelter door components passing on the base. The movable plate, during its movement, restricts the structure to be welded on the plate-shaped components of the air-raid shelter door, and the pad plate further restricts the plate-shaped components of the air-raid shelter door.

[0008] Furthermore, the top of the support plate has an opening along the center line parallel to the long side. The opening is located outside the support box when viewed from above. An electric push rod is fixed at the bottom inside the support box. The telescopic end of the electric push rod is fixed to the bottom of the support plate. The opening on the support plate is movably connected to the welding gun.

[0009] Furthermore, the welding torch vertically passes through the movable opening, and limiting discs are fixed around the welding torch at the top and bottom of the support plate. The two limiting discs are in contact with the top and bottom of the support plate, respectively. A knob bolt is vertically threaded through the upper limiting disc, and the bottom end of the knob bolt abuts against the top of the support plate. The limiting disc on the welding torch restricts the height between the welding torch and the support plate. Rotating the knob bolt presses the limiting disc and the support plate together.

[0010] Furthermore, a push screw is rotatably connected to the middle of the movable plate near the fixed strip. A handle is fixed to the side of the push screw away from the movable plate. The push screw is threadedly connected to the fixed strip. Movable rods are symmetrically fixed to the movable plate near the fixed strip. The push screw is positioned between the two movable rods. The movable rods are inserted into the fixed strip. Rotating the handle drives the push screw to push the movable plate to move within the fixed strip.

[0011] Furthermore, each of the clamping screws is fixed with a rotating frame at its top, and rollers are rotatably connected at equal intervals at the lower corner of the movable plate near the limiting plate. Rotating the rotating frame causes the clamping screw to press into the movable groove on the pad.

[0012] Furthermore, the top of the pad is provided with a movable groove corresponding to the positions of the two clamping screws. The clamping screws are movably connected in the movable grooves and abut against the bottom of the movable grooves. The movable grooves on the pads move the clamping screws, and after the clamping screws are pressed into the movable grooves, the position of the pads is fixed.

[0013] Furthermore, a push block is movably connected to the top of the base between the movable plate and the limiting plate. A push rod is fixed on the side of the push block away from the welding gun. Pushing the push rod causes the push block to move on the bottom.

[0014] This utility model has the following beneficial effects:

[0015] This invention solves the problem of inconvenient adjustment of welding fixtures for different blast door welding positions by setting up a base, support plate, and welding torch. The process involves determining the position of the welding torch and the weld seam on the corresponding blast door welding structure, sliding the welding torch until the welding position is roughly set at the corresponding weld seam position from a top-down view, and then sliding the welding torch within the movable opening on the support plate after the blast door sample passes under the support plate until the welding position of the welding torch precisely corresponds to the position to be welded on the blast door plate that the base passes over. This completes the welding torch position setting. Then, the knob bolt is rotated until it is pressed tightly against the top of the support plate, confirming the position between the welding torch and the support plate. This makes adjusting the welding torch for different blast door welding positions much simpler.

[0016] This invention solves the problem of vibration affecting the welding quality of air-raid shelter doors during welding by setting up a base, welding gun, movable plate, and pad. It determines the width of the air-raid shelter door and the dimensions of its stepped surface during operation. Rotating the handle on the push screw causes the push screw to rotate. Since the push screw is threadedly connected to the fixed strip, the position of the movable plate above the base is changed until the rollers on the movable plate just abut against the stepped surface of the door panel. Then, the pad is moved on top of the base, pushing it to a position that precisely restricts the installation of the sealing strip on the outer side of the stepped surface of the air-raid shelter door. This ensures that the air-raid shelter door is securely restrained during operation, guaranteeing the stability of the door's movement during welding and making its movement smoother, preventing any impact on the welding quality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1A three-dimensional diagram of the assembly structure of a new type of welding fixture for air-raid shelter doors;

[0019] Figure 2 This is a three-dimensional structural diagram of the base;

[0020] Figure 3 This is a three-dimensional structural diagram of the support plate;

[0021] Figure 4 A three-dimensional structural diagram of a welding torch;

[0022] Figure 5 This is a three-dimensional structural diagram of the movable panel;

[0023] Figure 6 This is a three-dimensional side view of the movable panel structure.

[0024] Figure 7 This is a three-dimensional structural diagram of the pad.

[0025] Figure label:

[0026] 1. Base; 101. Limiting plate; 102. Fixing strip; 2. Support plate; 201. Movable opening; 202. Fixing sleeve; 203. Support box; 204. Electric push rod; 3. Welding torch; 301. Limiting disc; 302. Knob bolt; 4. Movable plate; 401. Fixing plate; 402. Clamping screw; 403. Rotating frame; 404. Push screw; 405. Handle; 406. Movable rod; 407. Roller; 5. Pad; 501. Movable groove; 6. Push block; 601. Push rod. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0028] Please see Figure 1-4This utility model is a novel welding fixture for air-raid shelter doors, comprising a base 1, a support plate 2, a welding torch 3, a movable plate 4, and a pad 5. A limit plate 101 is fixed to one long side of the top of the base 1, supporting the base 1 on a working plane. The limit plate 101 restricts the upper part of the air-raid shelter door plate. A fixing strip 102 is fixed to the long side of the top of the base 1 away from the limit plate 101, and a push screw 404 is threadedly connected to the fixing strip 102. A support box 203 is fixed to the top of the limit plate 101, and the top of the support box 203 is open. A fixing sleeve 202 is movably connected inside the support box 203, and the top of the fixing sleeve 202 is fixed to the support plate 2. During the lifting and lowering of the support plate 2, the fixing sleeve 202 lifts and lowers within the support box 203. Because the support box 203 and the fixing sleeve 202 are movably connected, the support plate 2 is ensured to move freely during lifting and lowering. The position will not shift. A welding gun 3 is movably connected through the support plate 2. The welding gun 3 welds between the components of the air-raid shelter door. A pad 5 is provided on the top of the base 1 between the limiting plate 101 and the fixing strip 102. After the pad 5 abuts against one side of the air-raid shelter door material, it restricts one side of the air-raid shelter door material. A movable plate 4 is provided on the top of the pad 5. During the movement, the movable plate 4 adjusts and limits the structure on the side step surface of the air-raid shelter door. A fixing plate 401 is symmetrically fixed at the top of the movable plate 4 near the long side of the fixing strip 102. A clamping screw 402 is vertically threaded through the fixing plate 401. The clamping screw 402 is located between the movable plate 4 and the fixing strip 102. The clamping screw 402 is threaded through the fixing plate 401 until the clamping screw 402 presses onto the pad 5, restricting the position of the pad 5 and the base 1.

[0029] Specifically, the top of the support plate 2 has an opening 201 along the center line parallel to the long side. The opening 201 is located outside the support box 203 from a top view. An electric push rod 204 is fixed inside the bottom of the support box 203. The telescopic end of the electric push rod 204 is fixed to the bottom of the support plate 2. The opening 201 on the support plate 2 is movably connected to the welding gun 3. After the electric push rod 204 is started, it drives the support plate 2 to rise and fall.

[0030] Furthermore, the welding torch 3 is vertically inserted through the movable opening 201. Limiting discs 301 are fixed around the welding torch 3 at the top and bottom of the support plate 2. The two limiting discs 301 are in contact with the top and bottom of the support plate 2 respectively. A knob bolt 302 is vertically threaded through the upper limiting disc 301, and the bottom end of the knob bolt 302 abuts against the top of the support plate 2. The welding torch 3 can slide along the movable opening 201 to the target position. Then, the knob bolt 302 is used to press the limiting disc 301 and the support plate 2 to fix the welding torch 3 and determine the position of the welding torch 3.

[0031] The operation process of this embodiment is as follows: In operation, firstly, determine the position of the weld on the two welding structures of the welding torch 3 and the corresponding air-raid shelter door. Slide the welding torch 3 until the welding position of the welding torch 3 is roughly set at the corresponding weld position from a top-down perspective. After the air-raid shelter door sample being welded passes under the support plate 2, slide the welding torch 3 in the movable opening 201 on the support plate 2 until the welding position of the welding torch 3 precisely corresponds to the position to be welded on the air-raid shelter door plate that has passed on the base 1. The position setting of the welding torch 3 is completed. Then, rotate the knob bolt 302 until it is pressed against the top of the support plate 2 to determine the position between the welding torch 3 and the support plate 2. Specific Implementation Example 2

[0032] Please see Figure 1-7 Based on the first specific embodiment, a push screw 404 is rotatably connected to the middle of the movable plate 4 near the fixed bar 102. A handle 405 is fixed to the side of the push screw 404 away from the movable plate 4. The push screw 404 is threadedly connected to the fixed bar 102. Movable rods 406 are symmetrically fixed to the side of the movable plate 4 near the fixed bar 102. The push screw 404 is positioned between the two movable rods 406. The movable rods 406 are inserted into the fixed bar 102. Rotating the handle 405 will drive the push screw 404 to rotate. By movably connecting the push screw 404 to the fixed bar 102, the position between the movable plate 4 and the fixed bar 102 can be changed. The movable rods 406 are used to movably connect with the fixed bar 102 during the movement of the movable plate 4 to ensure the smoothness of the position change of the movable plate 4.

[0033] Specifically, each clamping screw 402 has a rotating frame 403 fixed at its top. Rollers 407 are rotatably connected at equal intervals at the lower corner of the movable plate 4 near the limiting plate 101. Rotating the rotating frame 403 on the clamping screw 402 causes the clamping screw 402 to rise and fall within the fixed plate 401. The rollers 407 are used to press and limit the structure that needs to be welded on the step surface of the air-raid shelter door between the movable plate 4 and the limiting plate 101.

[0034] Furthermore, the top of the pad 5 is provided with a movable groove 501 corresponding to the position of the two clamping screws 402. The clamping screws 402 are movably connected in the movable groove 501 and abut against the bottom of the movable groove 501. The movable groove 501 on the pad 5 is used to movably connect the clamping screws 402. When the clamping screws 402 enter the movable groove 501 on the pad 5 and are clamped, the position between the pad 5 and the base 1 is restricted.

[0035] Furthermore, a push block 6 is movably connected to the top of the base 1 between the movable plate 4 and the limiting plate 101. A push rod 601 is fixed on the side of the push block 6 away from the welding gun 3. After the plate-shaped workpiece of the air-raid shelter door and the workpiece to be welded are placed between the push block 6 and the welding gun 3, the push rod 601 is pushed, and the air-raid shelter door to be welded and the workpiece embedded on it are pushed below the welding gun 3 for welding through the push block 6.

[0036] The operation process of this embodiment is as follows: During operation, firstly, determine the width of the air-raid shelter door and the dimensions of its stepped surface. Rotate the handle 405 on the push screw 404 to rotate the push screw 404. Since the push screw 404 is threadedly connected to the fixing strip 102, change the position of the movable plate 4 above the base 1 until the roller 407 on the movable plate 4 can just abut against the stepped surface of the door panel. Then, move the pad 5 on the top of the base 1, pushing the pad 5 to the position that just restricts the installation of the sealing strip on the outer side of the stepped surface of the air-raid shelter door. This ensures that the air-raid shelter door is securely fixed during operation, guaranteeing the stability of the air-raid shelter door's movement during welding. Place the air-raid shelter door between the limiting plate 101 and the movable plate 4, and... The welding gun 3 is positioned between the push block 6 and the welding torch 3. After placing the welding structure in the pre-reserved welding structure slot on the air-raid shelter door, the welding machine connected to the welding torch 3 is started. The electric push rod 204 in the support box 203 is started to drive the welding torch 3 to descend. After the welding position of the welding torch 3 falls on the gap between the workpiece to be welded on the air-raid shelter door and the air-raid shelter door, the welding position of the welding torch 3 is used to weld the air-raid shelter door as the push block 6 is pushed. After the welding is completed, the electric push rod 204 is started to drive the support plate 2 and the welding torch 3 to rise, completing the welding. The push rod 601 is pulled, and the push block 6 is retracted to a suitable welding position. Then, another air-raid shelter door to be welded is placed on the base 1. After the air-raid shelter door is pushed again, the next air-raid shelter door to be welded will push the previously welded air-raid shelter door to the next processing structure.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel welding tool for civil air defense door, comprising a base (1), a support plate (2), a welding gun (3), a movable plate (4) and a backing plate (5), characterized in that: A limiting plate (101) is fixed to one long side of the top of the base (1). A fixing strip (102) is fixed to the long side of the top of the base (1) away from the limiting plate (101). A support box (203) is fixed to the top of the limiting plate (101). The top of the support box (203) is open. A fixing sleeve (202) is movably connected inside the support box (203). A support plate (2) is fixed to the top of the fixing sleeve (202). The support plate (2) is movable through the support plate (2). A welding torch (3) is connected to the base (1) between the limiting plate (101) and the fixing strip (102). A pad (5) is provided on the top of the base (1). A movable plate (4) is provided on the top of the pad (5). A fixing plate (401) is symmetrically fixed on the top of the movable plate (4) near the long side of the fixing strip (102). A clamping screw (402) is vertically threaded inside the fixing plate (401). The clamping screw (402) is located between the movable plate (4) and the fixing strip (102).

2. The novel welding fixture for air-raid shelter doors according to claim 1, characterized in that: The top of the support plate (2) has an opening (201) along the center line parallel to the long side. The opening (201) is located outside the support box (203) from a top view. An electric push rod (204) is fixed at the bottom of the support box (203). The telescopic end of the electric push rod (204) is fixed at the bottom of the support plate (2).

3. The novel welding fixture for air-raid shelter doors according to claim 2, characterized in that: The welding torch (3) passes vertically through the movable opening (201). The welding torch (3) at the top and bottom of the support plate (2) is fixed with a limiting plate (301). The two limiting plates (301) are in contact with the top and bottom of the support plate (2) respectively. A knob bolt (302) is vertically threaded through the upper limiting plate (301), and the bottom end of the knob bolt (302) abuts against the top of the support plate (2).

4. The novel welding fixture for air-raid shelter doors according to claim 1, characterized in that: A push screw (404) is rotatably connected to the middle of the side of the movable plate (4) near the fixed bar (102). A handle (405) is fixed to the side of the push screw (404) away from the movable plate (4). The push screw (404) is threadedly connected to the fixed bar (102). Movable rods (406) are symmetrically fixed to the side of the movable plate (4) near the fixed bar (102). The push screw (404) is located between the two movable rods (406). The movable rods (406) are inserted into the fixed bar (102).

5. The novel welding fixture for air-raid shelter doors according to claim 1, characterized in that: Each of the clamping screws (402) has a rotating frame (403) fixed at its top end, and the movable plate (4) has rollers (407) rotatably connected at equal intervals at the lower corner of the side near the limiting plate (101).

6. The novel welding fixture for air-raid shelter doors according to claim 1, characterized in that: The top of the pad (5) is provided with a movable groove (501) corresponding to the position of the two clamping screws (402). The clamping screws (402) are movably connected in the movable groove (501) and abut against the bottom of the movable groove (501).

7. The novel welding fixture for air-raid shelter doors according to claim 1, characterized in that: A push block (6) is movably connected to the top of the base (1) between the movable plate (4) and the limiting plate (101), and a push rod (601) is fixed on the side of the push block (6) away from the welding gun (3).

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