Civil air defense door frame assembling and welding tool

Abstract

The invention relates to the technical field of civil air defense door frames, and discloses a civil air defense door frame assembling and welding tool which comprises a workbench, a clamping and assembling mechanism and a welding mechanism, a plurality of table legs are fixedly connected to the periphery of the bottom of the workbench correspondingly, and vertical plates are fixedly connected to the two ends of the top of the workbench correspondingly. The clamping and assembling mechanism comprises a forward and reverse motor fixedly connected to the center of the bottom of the workbench, when a second supporting table is extruded, the second supporting table pushes an extrusion rod, the extrusion rod drives an air pressure plate to move, the air pressure plate extrudes inert gas in a gas box, and the inert gas is conveyed into the gas box; inert gas enters the diffusion hopper through the bent pipe in the gas box, the inert gas is discharged outwards through the diffusion hopper, and the inert gas is diffused through the diffusion hopper, so that the inert gas is sprayed to the welding position of the door frame, and contact between iron in the door frame and oxygen in air is reduced. Therefore, the occurrence of oxidation reaction is reduced, the generation of ferric oxide is reduced, and the working quality of the device is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of civil air defense door frames, and in particular to an assembly and welding tool for civil air defense door frames. Background Art

[0002] Civil defense doors are the doors at the entrances and exits of people's defense projects. They are clearly classified into ordinary single-leaf and double-leaf protective closed doors and closed doors, movable threshold single-leaf and double-leaf protective closed doors and closed doors, etc. For welding door frames, the four sides of the door frame need to be assembled first, and then the door frame is welded.

[0003] When assembling iron door frames, a welding machine is generally used to perform electric welding on the joints of the door frames. However, during the welding process, the iron door frame will undergo an oxidation reaction with oxygen in the air, thereby generating a layer of raised iron oxide. This layer of iron oxide is red and is often called welding slag or oxide scale, which affects the appearance of the door frame after assembly. This layer of iron oxide needs to be subsequently processed, which affects the work efficiency of the assembly. Summary of the invention

[0004] The purpose of the present invention is to provide a civil air defense door frame assembly and welding tool to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a civil air defense door frame assembly and welding tool, comprising a workbench, a plurality of table legs are fixedly connected to the four sides of the bottom of the workbench, and vertical plates are fixedly connected to the two ends of the top of the workbench. The clamping assembly mechanism also includes a forward and reverse motor fixedly connected to the center of the bottom of the workbench, the output end of the forward and reverse motor is fixedly connected to a rotating shaft, one end of the rotating shaft passes through the workbench and extends to the outside of the workbench, telescopic rods are fixedly connected to the two sides of the top of the workbench close to the vertical plate, the movable end of the telescopic rod is fixedly connected to a first support platform, the top of the first support platform is fixedly connected to a first rubber pad, and a clamping component is provided on the outer wall of the rotating shaft.

[0007] Furthermore, the clamping assembly includes a bevel gear fixedly connected to the outer wall of the rotating shaft, and tooth plates are respectively meshed and connected on both sides of the outer wall of the bevel gear. A limit strip is sleeved and slidably connected to the inner wall of the tooth plate, and one side of the limit strip is fixedly connected to the top of the workbench.

[0008] Furthermore, one end of the top of the tooth plate is fixedly connected to a vertical rod, and one end of the vertical rod away from the tooth plate is fixedly connected to a square plate, two ends of one side of the square plate are respectively penetrated and slidably connected with sliding rods, one end of the sliding rod is fixedly connected to a clamping block, and two ends of one side of the square plate are respectively fixedly connected to return springs, and the return springs are arranged on the outside of the sliding rod.

[0009] Furthermore, one end of the return spring away from the square plate is fixedly connected to a second support platform, one side of the second support platform close to the return spring is fixedly connected to one end of the slide rod, and one side of the second support platform away from the slide rod is fixedly connected to a second rubber pad.

[0010] Furthermore, an extrusion assembly is provided on one side of the second support platform, and the extrusion assembly includes an extrusion rod fixedly connected to the center of one side of the second support platform close to the sliding rod, an air box is fixedly connected to the center of the side of the square plate away from the return spring, one end of the extrusion rod penetrates the square plate and extends to the interior of the air box, and an end of the extrusion rod away from the second support platform is fixedly connected to an air pressure plate, and both sides of the outer wall of the air box are respectively connected to bent pipes, and an end of the bent pipe away from the air box is connected to a diffusion bucket.

[0011] Furthermore, a cleaning assembly is provided at the top of the rotating shaft, and the cleaning assembly includes a rotating plate fixedly connected to the top of the rotating shaft, a round block is fixedly connected to one end of the top of the rotating plate, the outer wall of the round block is sleeved and contacts a square ring frame, and a plurality of first rubber plates are fixedly connected on both sides of the outer wall of the square ring frame, and three first rubber plates are arranged in a group, one end of a group of first rubber plates is fixedly connected to a second rubber plate, and a sponge strip is fixedly connected to the bottom of the second rubber plate.

[0012] Furthermore, an auxiliary component is provided on the outer wall of the rotating shaft, and the auxiliary component includes a threaded plate threadedly connected to the outer wall of the middle end of the rotating shaft, and limiting rods are respectively passed through and slidably connected to the top of the threaded plate, and the bottom of the limiting rod is fixedly connected to the top of the workbench, and a plurality of inclined rods are respectively fixedly connected to the outer wall of the threaded plate.

[0013] Furthermore, a conversion box is fixedly connected to one end of the top of the inclined rod, a plurality of circular holes are opened on the top of the inner wall of the conversion box, a sponge block is fixedly connected to the top of the conversion box, a plurality of elastic tubes are connected to the outer wall of the conversion box, and one end of the elastic tube away from the conversion box is connected to a water tank, and the bottom of the water tank is fixedly connected to the top of the workbench.

[0014] Furthermore, a plurality of round rods are fixedly connected around the bottom of the inner wall of the water tank, a connecting rod is fixedly connected to the bottom of the inclined rod, one end of the connecting rod passes through the water tank and extends to the inside of the water tank, a circular plate is sleeved and fixedly connected to the outer wall of the bottom end of the connecting rod, and the inner wall of the circular plate is slidably connected to the outer wall of the round rod.

[0015] The present invention has the following beneficial effects:

[0016] (1) In the present invention, when the second support platform is squeezed, the second support platform pushes the squeezing rod, and the squeezing rod drives the air pressure plate to move, and the air pressure plate squeezes the inert gas inside the air box, and the inert gas enters the inside of the diffusion bucket through the curved pipe in the air box, and the inert gas is discharged outward through the diffusion bucket. Due to the setting of the diffusion bucket, the inert gas is diffused, thereby spraying the welding part of the door frame, reducing the contact between the iron in the door frame and the oxygen in the air. Thereby reducing the occurrence of oxidation reaction, reducing the generation of iron oxide, and enhancing the working quality of the device.

[0017] (2) The present invention places the door frame on the top of the first rubber pad and the second rubber pad respectively, starts the telescopic rod, the telescopic rod drives the first support platform to move upward, the first support platform drives the first rubber pad to move upward, the first rubber pad drives the door frame to move upward, moves to a predetermined position, closes the telescopic rod, and starts the forward and reverse motors at the same time, the forward and reverse motors drive the rotating shaft to rotate, the rotating shaft drives the bevel gear to rotate, the bevel gear drives the two toothed plates to approach each other, the toothed plates drive the vertical rods to move, the vertical rods drive the square plates to approach each other, the square plates drive the sliding rods to move, the sliding rods drive the second support platform to move mutually, the second support platform drives the second rubber pads to approach each other, and the second rubber pads drive the door frame to approach each other, so that the four door frames are spliced ​​together, the door frame is excessively squeezed, and the second rubber pad is pushed back, the second rubber pad pushes back the second support platform, and the second rubber pad pushes back the reset spring and the sliding rod, so as to prevent the device from excessively clamping and causing damage to the door frame surface, thereby enhancing the protection effect of the device on the door frame, and reducing the gap between the door frames, preventing cracks from being generated during welding, and enhancing the working quality of the device.

[0018] (3) In the present invention, during the rotation of the rotating shaft, the rotating plate is driven to rotate, and the rotating plate drives the round block to rotate. During the rotation of the round block, the square ring frame is caused to perform reciprocating translational motion, and the square ring frame drives the first rubber plate to perform reciprocating translational motion. During the movement of the first rubber plate, the door frame is contacted, so that the door frame can be finely adjusted, and the gaps between the four door frame welding points become smaller, thereby enhancing the quality of the door frame welding. In addition, the first rubber plate drives the second rubber plate to reciprocate, and the second rubber plate drives the sponge strip to reciprocate. During the movement of the sponge strip, the surface of the door frame can be cleaned, thereby reducing dust on the surface of the door frame, reducing the occurrence of oxidation reactions, and enhancing the working quality of the device.

[0019] (4) In the present invention, during the rotation of the rotating shaft, it is limited by the limiting rod, the rotating shaft drives the threaded plate to rise, the threaded plate drives the inclined rod to rise, the inclined rod drives the connecting rod to rise, and the connecting rod drives the circular plate to rise. During the rising process of the circular plate, the water inside the water tank is squeezed into the inside of the conversion box through the elastic tube, and the water flows outward through the circular hole opened in the conversion box. The water flows and mixes with the sponge block. When the sponge block contacts the door frame welding, the sponge block performs cold treatment on the reverse side of the door frame welding, so that the reverse side of the door frame is quickly cooled. This can effectively reduce the time of the oxidation reaction and reduce the generation of iron oxide, thereby enhancing the quality of the device after welding.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall top view structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall side half-section structure of the present invention;

[0024] Figure 3 It is a schematic diagram of a partial top view of the structure of the present invention;

[0025] Figure 4 It is a schematic diagram of a partial cross-sectional top view of the structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the side structure of the cleaning component of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional top view of the auxiliary component of the present invention;

[0028] Figure 7 For the present invention Figure 2 A magnified view of middle;

[0029] Figure 8 For the present invention Figure 5 Enlarged view of middle B;

[0030] Fig. 9 For the present invention Figure 6 Enlarged view of C in the middle.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1, workbench; 2, table legs; 3, vertical board; 4, clamping assembly mechanism; 41, forward and reverse motor; 42, rotating shaft; 43, telescopic rod; 44, first support platform; 45, first rubber pad; 46, clamping assembly; 47, extrusion assembly; 48, cleaning assembly; 49, auxiliary assembly; 461, bevel gear; 462, tooth plate; 463, limit strip; 464, vertical rod; 465, square plate; 466, slide rod; 467, block; 4610, return spring; 468, second support platform; 469, second Rubber pad; 471, extrusion rod; 472, air box; 473, air pressure plate; 474, bent pipe; 475, diffusion bucket; 481, rotating plate; 482, round block; 483, square ring frame; 484, first rubber plate; 485, second rubber plate; 486, sponge strip; 491, threaded plate; 492, limit rod; 493, inclined rod; 494, conversion box; 495, round hole; 496, sponge block; 497, elastic tube; 498, water tank; 499, round rod; 4910, connecting rod; 4911, round plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1, please refer to Figure 1-Figure 9 As shown, the present invention is a civil air defense door frame assembly welding tool, comprising a workbench 1, a plurality of table legs 2 are fixedly connected to the bottom and four sides of the workbench 1, and vertical plates 3 are fixedly connected to the top two ends of the workbench 1, the purpose of such arrangement is to enhance the moving stability of the clamping assembly 46, and also includes;

[0035] The clamping and assembling mechanism 4 includes a forward and reverse motor 41 fixedly connected to the bottom center of the workbench 1, and the output end of the forward and reverse motor 41 is fixedly connected to a rotating shaft 42. One end of the rotating shaft 42 passes through the workbench 1 and extends to the outside of the workbench 1. The two sides of the top of the workbench 1 close to the vertical plate 3 are respectively fixedly connected with telescopic rods 43, and the movable end of the telescopic rod 43 is fixedly connected to a first support platform 44. The top of the first support platform 44 is fixedly connected with a first rubber pad 45. The purpose of this arrangement is to reduce damage to the outer surface of the door frame. The outer wall of the rotating shaft 42 is provided with a clamping assembly 46.

[0036] The clamping assembly 46 includes a bevel gear 461 fixedly connected to the outer wall of the rotating shaft 42, and tooth plates 462 are respectively meshed and connected on both sides of the outer wall of the bevel gear 461. A limit strip 463 is sleeved on the inner wall of the tooth plate 462 and slidably connected. The purpose of this arrangement is to limit the moving trajectory of the tooth plate 462. One side of the limit strip 463 is fixedly connected to the top of the workbench 1.

[0037] A vertical rod 464 is fixedly connected to one end of the top of the tooth plate 462, and a square plate 465 is fixedly connected to one end of the vertical rod 464 away from the tooth plate 462. Slide rods 466 are respectively passed through and slidably connected at both ends of one side of the square plate 465, and a clamping block 467 is fixedly connected to one end of the slide rod 466. The purpose of this arrangement is to prevent the slide rod 466 from falling off. Return springs 4610 are respectively fixedly connected to the two ends of one side of the square plate 465, and the return spring 4610 is arranged on the outside of the slide rod 466.

[0038] One end of the return spring 4610 away from the square plate 465 is fixedly connected to the second support platform 468, the side of the second support platform 468 close to the return spring 4610 is fixedly connected to one end of the slide rod 466, and the side of the second support platform 468 away from the slide rod 466 is fixedly connected to the second rubber pad 469.

[0039] An extrusion assembly 47 is provided on one side of the second support platform 468, and the extrusion assembly 47 includes an extrusion rod 471 fixedly connected to the center of the second support platform 468 near the sliding rod 466, and an air box 472 is fixedly connected to the center of the side of the square plate 465 away from the return spring 4610. The interior of the air box 472 contains an inert gas, such as carbon dioxide, which can reduce the formation of iron oxide during welding. One end of the extrusion rod 471 penetrates the square plate 465 and extends to the interior of the air box 472, and the end of the extrusion rod 471 away from the second support platform 468 is fixedly connected to the air pressure plate 473, and the outer walls of the air box 472 are respectively connected to the two sides with the bent pipe 474, and the end of the bent pipe 474 away from the air box 472 is connected to the diffusion bucket 475.

[0040] The door frame is placed on the top of the first rubber pad 45 and the second rubber pad 469 respectively, and the telescopic rod 43 is started. The telescopic rod 43 drives the first support platform 44 to move upward, and the first support platform 44 drives the first rubber pad 45 to move upward. The first rubber pad 45 drives the door frame to move upward to the predetermined position, and the telescopic rod 43 is closed. At the same time, the forward and reverse motor 41 is started, and the forward and reverse motor 41 drives the rotating shaft 42 to rotate. The rotating shaft 42 drives the bevel gear 461 to rotate, and the bevel gear 461 drives the two tooth plates 462 to approach each other. The tooth plate 462 drives the vertical rod 464 to move, and the vertical rod 464 drives the square plate 465 to approach each other, and the square plate 465 drives the sliding rod 46 6 moves, the slide bar 466 drives the second support platform 468 to move relative to each other, the second support platform 468 drives the second rubber pad 469 to move relative to each other, the second rubber pad 469 drives the door frames to move relative to each other, so that the four door frames are spliced ​​together, and the door frames are subjected to excessive extrusion, which will push back the second rubber pad 469, the second rubber pad 469 pushes back the second support platform 468, and the second rubber pad 469 pushes back the return spring 4610 and the slide bar 466, so as to prevent the device from excessively clamping and causing damage to the surface of the door frame, thereby enhancing the protective effect of the device on the door frame, reducing the gap between the door frames, preventing cracks from being generated during welding, and enhancing the working quality of the device.

[0041] When the second support platform 468 is squeezed, the second support platform 468 pushes the squeezing rod 471, and the squeezing rod 471 drives the air pressure plate 473 to move, and the air pressure plate 473 squeezes the inert gas inside the air box 472, and the inert gas enters the inside of the diffusion bucket 475 through the curved pipe 474 in the air box 472, and the inert gas is discharged outward through the diffusion bucket 475. Due to the setting of the diffusion bucket 475, the inert gas is diffused, so as to spray the welding part of the door frame, reducing the contact between the iron in the door frame and the oxygen in the air. Thereby reducing the occurrence of oxidation reaction, reducing the generation of iron oxide, and enhancing the working quality of the device.

[0042] In embodiment 2, a cleaning assembly 48 is provided at the top of the rotating shaft 42, and the cleaning assembly 48 includes a rotating plate 481 fixedly connected to the top of the rotating shaft 42, a round block 482 is fixedly connected to one end of the top of the rotating plate 481, the outer wall of the round block 482 is sleeved and contacts with a square ring frame 483, and a plurality of first rubber plates 484 are fixedly connected on both sides of the outer wall of the square ring frame 483, and three first rubber plates 484 are arranged in a group, one end of a group of first rubber plates 484 is fixedly connected to a second rubber plate 485, and the bottom of the second rubber plate 485 is fixedly connected to a sponge strip 486.

[0043] An auxiliary component 49 is provided on the outer wall of the rotating shaft 42, and the auxiliary component 49 includes a threaded plate 491 threadedly connected to the outer wall of the middle end of the rotating shaft 42, and limiting rods 492 are respectively penetrated and slidably connected on the top and sides of the threaded plate 491. The purpose of this arrangement is to enable the threaded plate 491 to perform lifting and lowering movements. The bottom of the limiting rod 492 is fixedly connected to the top of the workbench 1, and a number of inclined rods 493 are respectively fixedly connected on the outer wall of the threaded plate 491.

[0044] One end of the top of the inclined rod 493 is fixedly connected to a conversion box 494, a plurality of circular holes 495 are provided on the top of the inner wall of the conversion box 494, a sponge block 496 is fixedly connected to the top of the conversion box 494, and the purpose of this arrangement is to adsorb cooling water, a plurality of elastic tubes 497 are connected to the outer walls of the conversion box 494, and the purpose of this arrangement is to be able to stretch and lengthen, one end of the elastic tube 497 away from the conversion box 494 is connected to a water tank 498, and the bottom of the water tank 498 is fixedly connected to the top of the workbench 1.

[0045] A plurality of round rods 499 are fixedly connected around the bottom of the inner wall of the water tank 498, and a connecting rod 4910 is fixedly connected to the bottom of the inclined rod 493. One end of the connecting rod 4910 penetrates the water tank 498 and extends to the inside of the water tank 498. A circular plate 4911 is sleeved and fixedly connected to the outer wall of the bottom end of the connecting rod 4910, and the inner wall of the circular plate 4911 is slidably connected to the outer wall of the round rod 499.

[0046] During use, the rotating shaft 42 rotates, driving the rotating plate 481 to rotate, and the rotating plate 481 drives the round block 482 to rotate. During the rotation of the round block 482, the square ring frame 483 performs reciprocating translational motion, and the square ring frame 483 drives the first rubber plate 484 to perform reciprocating translational motion. During the movement of the first rubber plate 484, the door frame is contacted, so that the door frame can be finely adjusted, and the gap between the four door frame welding points becomes smaller, thereby enhancing the quality of the door frame welding. The first rubber plate 484 drives the second rubber plate 485 to reciprocate, and the second rubber plate 485 drives the sponge strip 486 to reciprocate. During the movement of the sponge strip 486, the surface of the door frame can be cleaned, thereby reducing dust on the surface of the door frame, reducing the occurrence of oxidation reaction, and enhancing the working quality of the device.

[0047] During the rotation of the rotating shaft 42, it is limited by the limiting rod 492, and the rotating shaft 42 drives the threaded plate 491 to rise, the threaded plate 491 drives the inclined rod 493 to rise, the inclined rod 493 drives the connecting rod 4910 to rise, and the connecting rod 4910 drives the circular plate 4911 to rise. During the rising process of the circular plate 4911, the water inside the water tank 498 is squeezed into the inside of the conversion box 494 through the elastic tube 497, and the water flows outward through the circular hole 495 opened at the conversion box 494, and the water flows and the sponge block 496. When the sponge block 496 contacts the door frame welding, the sponge block 496 performs cold treatment on the reverse side of the door frame welding, so that the reverse side of the door frame is quickly cooled, which can effectively reduce the oxidation reaction time and reduce the formation of iron oxide, thereby enhancing the quality of the device after welding.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A civil air defense door frame assembly and welding tool, comprising a workbench (1), characterized in that: The bottom of the workbench (1) is fixedly connected to a plurality of table legs (2) on all sides thereof, and the top two ends of the workbench (1) are fixedly connected to vertical boards (3) respectively, and further comprises: A clamping and assembling mechanism (4), the clamping and assembling mechanism (4) comprising a forward and reverse motor (41) fixedly connected to the bottom center of the workbench (1), the output end of the forward and reverse motor (41) being fixedly connected to a rotating shaft (42), one end of the rotating shaft (42) passing through the workbench (1) and extending to the outside of the workbench (1), the top sides of the workbench (1) close to the vertical plate (3) are respectively fixedly connected to telescopic rods (43), the movable end of the telescopic rod (43) is fixedly connected to a first supporting platform (44), the top of the first supporting platform (44) is fixedly connected to a first rubber pad (45), and the outer wall of the rotating shaft (42) is provided with a clamping assembly (46).

2. The civil air defense door frame assembly and welding tool according to claim 1, characterized in that: The clamping assembly (46) comprises a bevel gear (461) fixedly connected to the outer wall of the rotating shaft (42), and tooth plates (462) are respectively meshed and connected on both sides of the outer wall of the bevel gear (461), and a limit strip (463) is sleeved on the inner wall of the tooth plate (462) and slidably connected, and one side of the limit strip (463) is fixedly connected to the top of the workbench (1).

3. The civil air defense door frame assembly and welding tool according to claim 2 is characterized by: One end of the top of the tooth plate (462) is fixedly connected to a vertical rod (464), and one end of the vertical rod (464) away from the tooth plate (462) is fixedly connected to a square plate (465), and two ends of one side of the square plate (465) are respectively penetrated and slidably connected with a sliding rod (466), one end of the sliding rod (466) is fixedly connected to a clamping block (467), and two ends of one side of the square plate (465) are respectively fixedly connected to a return spring (4610), and the return spring (4610) is arranged outside the sliding rod (466).

4. The civil air defense door frame assembly and welding tool according to claim 3, characterized in that: One end of the return spring (4610) away from the square plate (465) is fixedly connected to a second support platform (468), the side of the second support platform (468) close to the return spring (4610) is fixedly connected to one end of the sliding rod (466), and the side of the second support platform (468) away from the sliding rod (466) is fixedly connected to a second rubber pad (469).

5. The civil air defense door frame assembly and welding tool according to claim 4, characterized in that: An extrusion assembly (47) is provided on one side of the second support platform (468), and the extrusion assembly (47) includes an extrusion rod (471) fixedly connected to the center of the second support platform (468) near the sliding rod (466); an air box (472) is fixedly connected to the center of the side of the square plate (465) away from the return spring (4610); one end of the extrusion rod (471) passes through the square plate (465) and extends to the inside of the air box (472); the end of the extrusion rod (471) away from the second support platform (468) is fixedly connected to an air pressure plate (473); both sides of the outer wall of the air box (472) are respectively connected to curved pipes (474); the end of the curved pipe (474) away from the air box (472) is connected to a diffusion bucket (475).

6. The civil air defense door frame assembly and welding tool according to claim 5, characterized in that: A cleaning assembly (48) is provided at the top of the rotating shaft (42), and the cleaning assembly (48) comprises a rotating plate (481) fixedly connected to the top of the rotating shaft (42), a round block (482) is fixedly connected to one end of the top of the rotating plate (481), the outer wall of the round block (482) is sleeved with and contacts a square ring frame (483), and a plurality of first rubber plates (484) are fixedly connected to both sides of the outer wall of the square ring frame (483), three first rubber plates (484) are arranged in a group, one end of a group of the first rubber plates (484) is fixedly connected to a second rubber plate (485), and the bottom of the second rubber plate (485) is fixedly connected to a sponge strip (486).

7. The civil air defense door frame assembly and welding tool according to claim 6, characterized in that: The outer wall of the rotating shaft (42) is provided with an auxiliary component (49), and the auxiliary component (49) comprises a threaded plate (491) threadedly connected to the outer wall of the middle end of the rotating shaft (42), and the top of the threaded plate (491) is respectively penetrated and slidably connected with a limit rod (492), the bottom of the limit rod (492) is fixedly connected to the top of the workbench (1), and the outer wall of the threaded plate (491) is respectively fixedly connected with a plurality of inclined rods (493).

8. The civil air defense door frame assembly and welding tool according to claim 7, characterized in that: A conversion box (494) is fixedly connected to one end of the top of the inclined rod (493); a plurality of circular holes (495) are provided on the top of the inner wall of the conversion box (494); a sponge block (496) is fixedly connected to the top of the conversion box (494); a plurality of elastic tubes (497) are respectively connected to the outer wall of the conversion box (494); one end of the elastic tube (497) away from the conversion box (494) is connected to a water tank (498); and the bottom of the water tank (498) is fixedly connected to the top of the workbench (1).

9. The civil air defense door frame assembly and welding tool according to claim 8, characterized in that: A plurality of round rods (499) are fixedly connected around the bottom of the inner wall of the water tank (498), and a connecting rod (4910) is fixedly connected to the bottom of the inclined rod (493). One end of the connecting rod (4910) passes through the water tank (498) and extends into the interior of the water tank (498). A circular plate (4911) is sleeved on and fixedly connected to the outer wall of the bottom end of the connecting rod (4910), and the inner wall of the circular plate (4911) is slidably connected to the outer wall of the round rod (499).

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