An auxiliary welding platform for a civil air defense door

Abstract

The present invention belongs to the field of welding technology, and specifically relates to an auxiliary welding platform for a civil air defense door, including a support platform. A heightening platform is fixedly connected to the lower surface of the support platform. A civil air defense door is slidably connected to the upper surface of the support platform. An axial rotator is provided inside the support platform, and the outer surface of the casing of the axial rotator is fixedly connected to one side of the inner wall axis of the support platform. When welding the inner frame of a large civil air defense door, the device can first raise the civil air defense door to a certain height through the support arms on both sides, and then insert the welding device in the middle of the support platform into the cut groove gap of the civil air defense door to directly carry out the welding work on the inner wall of the civil air defense door. Since the composite welding rod at the end of the welding device can be directly inserted into the interior of the civil air defense door, the welding work on the inner wall of the inner frame can be carried out at a lower cost, avoiding the problem that the welding end cannot be inserted into the inner wall of the civil air defense door during manual welding.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding, and specifically relates to an auxiliary welding platform for civil air defense doors. Background Art

[0002] Civil air defense doors belong to civil defense protection equipment and have relatively high requirements for airtightness. During wartime, they can prevent chemical agents and biological agents from entering the interior of the civil air defense project through the entrances of the civil air defense project. The door leaves of civil air defense doors are welded by a skeleton and a panel and are the main components for withstanding shock waves. The skeleton is generally assembled and welded by horizontal and vertical channel steels and I-beams. Since the number of channel steels and I-beams is large, the number of weld beads is also large, and full welding is required, resulting in large welding deformation. When welding existing civil air defense doors, after the I-beams and channel steels are assembled into a skeleton, they are placed on a welding platform for welding, and the deformation after welding is corrected by a press or by hammering with a sledgehammer. Therefore, the welding of civil air defense doors is a particularly important process; in production, generally, the outer frame of the civil air defense door is placed on a welding platform for related welding operations.

[0003] When welding the inner frame of a civil air defense door, due to the relatively deep inner wall of the inner frame, it is very difficult to perform accurate welding work by manual welding. When using a robotic arm for welding work, the production and manufacturing cost of the robotic arm is too high, which is not conducive to large-scale popularization. Moreover, the robotic arm can only weld small civil air defense doors, and the area of large civil air defense doors is too large, which is likely to exceed the movement range of the robotic arm. Therefore, improvements are needed. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is as follows: An auxiliary welding platform for a civil air defense door, including a support platform, a heightening platform is fixedly connected to the lower surface of the support platform, a civil air defense door is slidably connected to the upper surface of the support platform, and the inner wall of the support platform is provided with: an axial center rotating machine, the outer surface of the machine shell of the axial center rotating machine is fixedly connected to one side of the axial center of the inner wall of the support platform, an outer surface of an output shaft of the axial center rotating machine is fixedly connected with a winding rod, upper and lower sides of an outer surface of the winding rod are symmetrically provided with side tension belts, and one end of the side tension belt far from the winding rod is fixedly connected with a fitting shell; a side rotating shaft, both ends of an outer surface of the side rotating shaft are rotationally connected to the side surface of the inner wall of the support platform through torque motors, a torque rotating shaft is meshed and connected to the middle of the outer surface of the side rotating shaft, both ends of the torque rotating shaft extend to the outside of the support platform, both ends of the torque rotating shaft are fixedly connected with support arms, and one end of the inner wall of the support arm far from the torque rotating shaft is rotationally connected with a sliding runner; Before welding work is carried out, first place the main board of the civil air defense door on the upper surface of the support platform, adjust the civil air defense door to be parallel to the lower support platform, and then complete the preparatory work. After the preparatory work is completed, start the axial center rotating machine at the axial center of the support platform. At this time, the output shaft of the axial center rotating machine rotates clockwise, the winding rod rotates self, and the side tension belts on both sides are wound onto the outer surface of the winding rod. Then, the fitting shells on both sides slide along the chute on the side surface of the support platform towards the side close to the winding rod under the pulling force of the side tension belts. At this time, the inner wall of the fitting shell is separated from the sliding runner at the top of the support arm. Then start the torque motors on both sides, and control the torque rotating shaft to rotate through the side rotating shaft. At this time, the support arms at both ends on the left rotate counterclockwise, and the support arms at both ends on the right rotate clockwise. The civil air defense door located on the upper surface of the support platform is gradually lifted by a certain height by the support arms through the sliding runners. During the process of using the support platform to lift the civil air defense door upward, the support arms on both sides maintain symmetric motion. Therefore, the supporting force received by the lower surface of the civil air defense door always remains in a relatively balanced state, and problems such as imbalance will not occur due to excessive force on one side. The auxiliary sliding runner is normally wrapped by the fitting shell, thereby preventing problems such as corrosion and pollution of the side surface of the sliding runner by the external environment, enabling the sliding runner to rotate smoothly, and extending the service life of the device.

[0005] Preferably, a through cutting groove is formed in the middle of the inner wall of the support platform. A welding device is slidably connected to the middle of the inner wall of the support platform through the through cutting groove. A sliding chassis is fixedly connected to the lower part of the outer surface of the welding device. The sliding chassis includes an inner sliding disc. Both sides of the outer surface of the inner sliding disc are meshed and connected with transfer tooth columns through meshing tooth grooves. Control motors are symmetrically arranged at both ends of the output shaft of the transfer tooth columns. Lubricating guide plates are fixedly connected to both sides of the outer surface of the inner sliding disc. Both sides of the outer surface of the inner sliding disc are slidably connected to both sides of the inner wall of the sliding chassis through the lubricating guide plates. After the civil air defense door is lifted, the control motors on the inner wall of the sliding chassis control the transfer tooth columns to rotate. When the transfer tooth columns rotate, they can lift the inner sliding disc upward through the tooth grooves on the side of the inner sliding disc. At this time, the inner sliding disc pushes the welding device upward, and the upper part of the welding device slides out from the cutting groove in the middle of the support platform, so as to insert the welding end into the inner frame of the civil air defense door, and then realize the welding of the inner wall of the inner frame of the civil air defense door.

[0006] Preferably, one side of the matching housing close to the side tension belt is slidably connected to the side surface of the support platform through a side cutting groove. A buffer gasket is fixedly connected to one end of the matching housing close to the side tension belt. An adaptation groove is formed at one end of the matching housing far from the side tension belt, and the shape of the inner wall of the adaptation groove is the same as the shape of the outer surface of the sliding runner. Since the support arm contacts the lower surface of the civil air defense door through the sliding runner, the friction force received by the lower surface of the civil air defense door is extremely small at this time. Therefore, after the civil air defense door is lifted, the operator can easily push the civil air defense door to realize the moving work of the civil air defense door, so that the welding device and the civil air defense door move relatively, so as to weld each inner frame of the large civil air defense door, and the civil air defense door can also be removed from the upper surface of the device by manually pushing the civil air defense door, thus achieving the effect of being able to unload the civil air defense door without using a handling machine.

[0007] Preferably, the side surface of the sliding chassis is fixedly connected to the cutting groove at the inner wall of the height increasing platform. The outer surface of the control motor housing is fixedly connected to the inner wall of the sliding chassis. One end of the support arm far from the torque rotating shaft is slidably connected to the lower surface of the civil air defense door through a sliding runner. The side surface of the welding device is slidably connected to the middle of the inner wall of the platform through a through cutting groove. When welding the inner frame of a large civil air defense door, the device can first lift the civil air defense door to a certain height through the support arms on both sides, and then insert the welding device in the middle of the support platform into the cutting groove gap of the civil air defense door to directly weld the inner wall of the civil air defense door. Since the composite welding rod at the end of the welding device can be directly inserted into the interior of the civil air defense door, the inner wall of the inner frame can be welded at a lower cost, avoiding the problem that the welding end cannot be inserted into the inner wall of the civil air defense door during manual welding.

[0008] Preferably, the welding device includes a fixed rotating machine. The outer surface of the output shaft of the fixed rotating machine is evenly provided with external rotating rods. The top ends of the external rotating rods are fixedly connected with lateral sliders. The top end of the output shaft of the fixed rotating machine is fixedly connected with an internal insertion rod. The upper part of the outer surface of the internal insertion rod is slidably connected with a threaded rotating sleeve through a vertical chute. The upper part of the outer surface of the threaded rotating sleeve is threadedly connected with a cooling sleeve. The top end of the threaded rotating sleeve is rotatably connected with a thrust rotating sleeve. The upper part of the inner wall of the cooling sleeve is slidably connected with a composite welding rod. On both sides of the upper part of the inner wall of the welding device, drainage boxes are symmetrically arranged. After the welding device slides out from the middle of the support platform, the fixed rotating machine inside twists the internal insertion rod. The threaded rotating sleeve on the outer surface of the internal insertion rod spirally ascends along the thread groove at the bottom of the inner wall of the cooling sleeve. At this time, the bottom end of the thrust rotating sleeve slips with the top end of the threaded rotating sleeve. As a result, the thrust rotating sleeve can only be pushed upward along the inner wall of the cooling sleeve, so as to push the composite welding rod out from the axis of the inner wall of the cooling sleeve and directly insert it into the cutting groove of the air defense door.

[0009] Preferably, the composite welding rod includes a thick bottom cylinder. The center of the upper surface of the thick bottom cylinder is fixedly connected with a thin connecting rod. On the upper part of the inner wall of the thin connecting rod, rotating joints are symmetrically arranged. The outer surfaces of the rotating joints are fixedly connected with metal wire ropes through fixed rotating plates. The bottom ends of the metal wire ropes are fixedly connected with rotor motors through drums. The lower part of the outer surface of the rotating joints is fixedly connected with adjusting welding rods. When welding work is carried out, the rotor motors on both sides pull the bottom ends of the metal wire ropes, so that the metal wire ropes are pulled downward. The top ends of the metal wire ropes rotate the fixed rotating plates on the outer surfaces of the rotating joints toward the side close to the axis of the thin connecting rod. At this time, the vertically arranged adjusting welding rods gradually rotate to the horizontal state and the top ends contact the inner wall of the air defense door, so as to carry out welding work on the inner frame of the inner wall of the air defense door. After the welding is completed, the rotor motors stop working. The adjusting welding rods rotate to the vertical state under the action of their own gravity. At this time, the fixed rotating machine rotates in the reverse direction, and the composite welding rod contracts into the inner wall of the cooling sleeve.

[0010] Preferably, the cooling sleeve includes a bent through pipe. The bottom end of the inner wall of the bent through pipe is slidably connected with a round head sliding plug. The end of the round head sliding plug away from the lateral slider is fixedly connected with a limit baffle through a built-in spring. When using this device to carry out welding operations on the air defense door, the inner wall at the axis of the cooling sleeve plays a role in restricting and guiding the outer surface of the composite welding rod. However, this will lead to poor heat dissipation performance of the composite welding rod. During the process of the fixed rotating machine controlling the self-rotation of the internal insertion rod, the lateral slider at the top end of the external rotating rod can continuously press the round head sliding plug, and the bent through pipe then blows air from the top to the axis of the cooling sleeve, so as to cool the outer surface of the composite welding rod, extend the continuous working time of the composite welding rod, and delay the situation of overheating and overload of the composite welding rod.

[0011] Preferably, the outer surface of the side slider is slidably connected to the lower part of the outer surface of the cooling jacket. The top end of the bent through pipe extends to the axis of the inner wall of the cooling jacket, and the bottom end of the bent through pipe is fixedly connected to the opening at the lower part of the inner wall of the cooling jacket. The outer surface of the thick bottom cylinder is slidably connected to the lower part of the inner wall of the cooling jacket, and the axis of the upper part of the inner wall of the welding device is fixedly connected to the upper part of the outer surface of the cooling jacket. During the rotation of the output shaft of the fixed rotating machine, the side slider is tractioned by an external rotating rod to rotate along the lower part of the outer surface of the cooling jacket in a wall-attached manner. Whenever the side slider sweeps over the top end of the round head plug, the round head plug will be squeezed into the interior of the bent through pipe, increasing the pressure at the bottom of the bent through pipe. Then, the air pressure is discharged in the form of wind from the top to the axis of the cooling jacket. Therefore, the composite welding rod can be cooled by the wind force from the side holes to enhance the heat dissipation effect. After the side slider sweeps over the top end of the round head plug, the bottom end of the round head plug slides out of the interior of the cooling jacket under the thrust of the internal spring, and then prepares for the next blowing action to achieve a cyclic effect.

[0012] Preferably, the drainage box includes a sliding filter pipe. A fixed insertion rod is slidably connected to the lower part of the inner wall of the sliding filter pipe. A vibration spring is fixedly connected to the lower surface of the sliding filter pipe. A vortex rotating rod is rotatably connected to the lower part of the inner wall of the fixed insertion rod. The axis of the lower surface of the vortex rotating rod is fixedly connected to a cooling motor, and the upper part of the outer surface of the cooling motor housing is fixedly connected to a bottom partition. During the welding operation, the cooling motor controls the high-speed rotation of the vortex rotating rod, extracts the gas above the sliding filter pipe to the upper part of the bottom partition, and discharges it from the slots on both sides of the bottom partition. When the vortex rotating rod sucks air from top to bottom, the sliding filter pipe also slides down along the upper part of the outer surface of the fixed insertion rod under the action of air suction. At this time, the vibration spring is compressed. At the moment when the vortex rotating rod stops rotating, the vibration spring returns to its original state and pushes the sliding filter pipe upward. When the sliding filter pipe reaches the highest point position, it will stretch the vibration spring again, so that the sliding filter pipe vibrates repeatedly in the vertical direction, and then shakes the residue at the top end of the sliding filter pipe into the interior of the drainage box.

[0013] Preferably, the upper surface of the bottom partition is fixedly connected to the lower surface of the welding device. On both sides of the upper part of the inner wall of the bottom partition, ventilation cutting grooves are symmetrically provided. At the top end of the inner wall of the sliding filter tube, filtering ports are evenly provided. The lower part of the outer surface of the fixed insertion rod is fixedly connected to the bottom of the inner wall of the welding device through a socket. On both sides of the upper part of the inner wall of the welding device, it is fixedly connected to the upper surface of the drainage box through a penetrating cutting groove. The fumes generated during the welding of the inner wall of the civil air defense door will be absorbed into the interior of the device through the drainage box. When the waste gas passes through the sliding filter tube, the waste gas can be simply filtered, thus greatly reducing the content of toxic substances inside. When filtering the waste gas, the top end of the sliding filter tube may be blocked by the residues generated during welding, thereby affecting the air intake work. However, at the moment when the vortex rotating rod stops rotating, the sliding filter tube can vibrate rapidly in the vertical direction under the elastic force of the vibration spring, so as to shake the residues at the top end of the sliding filter tube into the interior of the drainage box, dredging the filtering ports of the sliding filter tube and solving the problem that the through ports of the sliding filter tube are easily blocked by residues.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. When welding the inner frame of a large civil air defense door, the device can first raise the civil air defense door to a certain height through the support arms on both sides, and then insert the welding device in the middle of the support platform into the cutting groove gap of the civil air defense door to directly weld the inner wall of the civil air defense door. Since the composite welding rod at the end of the welding device can be directly inserted into the interior of the civil air defense door, the inner wall of the inner frame can be welded at a relatively low cost, avoiding the problem that the welding end cannot be inserted into the inner wall of the civil air defense door during manual welding.

[0016] 2. Since the support arms contact the lower surface of the civil air defense door through sliding wheels, the friction force received by the lower surface of the civil air defense door is extremely small at this time. Therefore, after the civil air defense door is raised, the operator can easily push the civil air defense door to move the civil air defense door, so that the welding device and the civil air defense door move relative to each other, enabling welding work to be carried out on each inner frame of the large civil air defense door. The civil air defense door can also be removed from the upper surface of the device by manually pushing the civil air defense door, thus achieving the effect of being able to unload the civil air defense door without using a handling machine.

[0017] 3. During the process of using the support platform to lift the civil air defense door upward, the support arms on both sides move symmetrically. Therefore, the supporting force received by the lower surface of the civil air defense door always remains in a relatively balanced state, and problems such as imbalance will not occur due to excessive force on one side. The auxiliary sliding wheels are normally wrapped by a suitable housing, thus preventing problems such as corrosion and pollution of the side surfaces of the sliding wheels by the external environment, enabling the sliding wheels to rotate smoothly and extending the service life of the device.

[0018] 4. When using this device for welding the civil air defense door, the inner wall at the axis of the cooling jacket plays a role in restricting and guiding the outer surface of the composite welding rod. However, this will result in poor heat dissipation performance of the composite welding rod. During the process of the fixed rotating machine controlling the self-rotation of the inner insertion rod, the side slider at the top of the external rotating rod can continuously press the round head sliding plug, bending the through pipe and then blowing air from the top to the axis of the cooling jacket, thereby cooling the outer surface of the composite welding rod, extending the continuous working time of the composite welding rod, and delaying the occurrence of overheating and overload of the composite welding rod.

[0019] 5. The fumes generated during the welding of the inner wall of the civil air defense door will be absorbed into the interior of the device through the drainage box. When the waste gas passes through the sliding filter pipe, the waste gas can be simply filtered, thereby greatly reducing the content of toxic substances inside. The top of the sliding filter pipe may be blocked by the residues generated during welding when filtering the waste gas, thereby affecting the air intake work. At the moment when the vortex rotating rod stops rotating, the sliding filter pipe can vibrate rapidly in the vertical direction under the elastic force of the vibration spring, thereby shaking the residues at the top of the sliding filter pipe into the interior of the drainage box, dredging the filter port of the sliding filter pipe, and solving the problem that the through port of the sliding filter pipe is easily blocked by residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view of the present invention;

[0021] Figure 2 is a partial structural cross-sectional view of the present invention;

[0022] Figure 3 is a cross-sectional view of the support platform of the present invention;

[0023] Figure 4 is a cross-sectional view of the sliding chassis of the present invention;

[0024] Figure 5 is a cross-sectional view of the welding device of the present invention;

[0025] Figure 6 is a cross-sectional view of the composite welding rod of the present invention;

[0026] Figure 7 is a cross-sectional view of the cooling jacket of the present invention;

[0027] Figure 8 is a schematic structural diagram of the drainage box of the present invention.

[0028] In the figure: 1. Support platform; 11. Raising platform; 12. Fitting housing; 13. Lateral tension belt; 14. Winding rod; 15. Axial rotating machine; 16. Support arm; 17. Sliding wheel; 18. Lateral rotating shaft; 19. Torque rotating shaft; 2. Civil air defense door; 3. Welding device; 4. Sliding chassis; 41. Control motor; 42. Transfer gear column; 43. Inner sliding disk; 44. Lubricating guide plate; 31. Fixed rotating machine; 32. Inner insertion rod; 33. Threaded rotating sleeve; 34. Thrust rotating sleeve; 35. External connecting rod; 36. Lateral slider; 5. Composite welding rod; 51. Thick bottom cylinder; 52. Thin connecting rod; 53. Metal wire; 54. Adjusting welding rod; 55. Rotor motor; 6. Cooling housing; 61. Bent through pipe; 62. Round head sliding plug; 63. Limit baffle; 7. Drainage box; 71. Bottom partition; 72. Vortex rotating rod; 73. Fixed insertion rod; 74. Sliding filter pipe; 75. Vibration spring. Specific implementation mode

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0030] Embodiment 1

[0031] Please refer to Figures 1-4 , the present invention provides a technical solution: an auxiliary welding platform for a civil air defense door 2, including a support platform 1, a raising platform 11 is fixedly connected to the lower surface of the support platform 1, a civil air defense door 22 is slidably connected to the upper surface of the support platform 1, and the inner wall of the support platform 1 is provided with: an axial rotating machine 15, the outer surface of the casing of the axial rotating machine 15 is fixedly connected to one side of the axial center of the inner wall of the support platform 1, the outer surface of the output shaft of the axial rotating machine 15 is fixedly connected with a winding rod 14, and the upper and lower sides of the outer surface of the winding rod 14 are symmetrically provided with lateral tension belts 13, and one end of the lateral tension belt 13 far from the winding rod 14 is fixedly connected with a fitting housing 12; a lateral rotating shaft 18, both ends of the outer surface of the lateral rotating shaft 18 are rotationally connected to the side surface of the inner wall of the support platform 1 through torque motors, the middle part of the outer surface of the lateral rotating shaft 18 is meshed with a torque rotating shaft 19, both ends of the torque rotating shaft 19 extend to the outside of the support platform 1, and both ends of the torque rotating shaft 19 are fixedly connected with support arms 16, and one end of the inner wall of the support arm 16 far from the torque rotating shaft 19 is rotationally connected with a sliding wheel 17;

[0032] A through groove is provided in the middle of the inner wall of the support platform 1. A welding device 3 is slidably connected to the middle of the inner wall of the support platform 1 through the through groove. A sliding chassis 4 is fixedly connected to the lower part of the outer surface of the welding device 3;

[0033] The sliding chassis 4 includes an inner sliding disk 43. On both sides of the outer surface of the inner sliding disk 43, there are transfer tooth columns 42 meshed through meshing tooth grooves. At both ends of the output shaft of the transfer tooth column 42, control motors 41 are symmetrically arranged. On both sides of the outer surface of the inner sliding disk 43, lubricating guide plates 44 are fixedly connected. On both sides of the outer surface of the inner sliding disk 43, it is slidably connected to both sides of the inner wall of the sliding chassis 4 through the lubricating guide plates 44.

[0034] One side of the fitting casing 12 close to the side tension belt 13 is slidably connected to the side surface of the support platform 1 through a side groove. A buffer washer is fixedly connected to one end of the fitting casing 12 close to the side tension belt 13. An adaptation groove is provided at one end of the fitting casing 12 away from the side tension belt 13, and the shape of the inner wall of the adaptation groove is the same as the shape of the outer surface of the sliding runner 17.

[0035] The side surface of the sliding chassis 4 is fixedly connected to the cutting groove of the inner wall of the heightening platform 11. The outer surface of the casing of the control motor 41 is fixedly connected to the inner wall of the sliding chassis 4. One end of the support arm 16 away from the torque rotating shaft 19 is slidably connected to the lower surface of the civil air defense door 22 through the sliding runner 17. The side surface of the welding device 3 is slidably connected to the middle of the inner wall of the platform through the through groove.

[0036] The welding device 3 includes a fixed rotating machine 31. On the outer surface of the output shaft of the fixed rotating machine 31, external connecting rods 35 are evenly arranged. The top of the external connecting rod 35 is fixedly connected with a side slider 36. The top of the output shaft of the fixed rotating machine 31 is fixedly connected with an inner inserting rod 32. On the upper part of the outer surface of the inner inserting rod 32, a threaded rotating sleeve 33 is slidably connected through a vertical chute. The upper part of the outer surface of the threaded rotating sleeve 33 is threadedly connected with a cooling sleeve 6. The top of the threaded rotating sleeve 33 is rotatably connected with a thrust sleeve 34. The upper part of the inner wall of the cooling sleeve 6 is slidably connected with a composite welding rod 5. On both sides of the upper part of the inner wall of the welding device 3, drainage boxes 7 are symmetrically arranged.

[0037] Before welding work, first place the main board of the civil air defense door 2 on the upper surface of the support platform 1. After adjusting the civil air defense door 2 to be parallel to the lower support platform 1, the preparation work is completed.

[0038] After the preparatory work is completed, start the shaft rotating machine 15 at the axis of the support platform 1. At this time, the output shaft of the shaft rotating machine 15 rotates clockwise, the winding reel 14 rotates self, and the side tension belts 13 on both sides are wound onto the outer surface of the winding reel 14. Then, both sides of the matching casing 12 slide along the chute on the side of the support platform 1 towards the side close to the winding reel 14 under the pulling force of the side tension belts 13. At this time, the inner wall of the matching casing 12 is separated from the sliding wheel 17 at the top of the support arm 16. Then, start the torque motors on both sides, and control the torque rotating shaft 19 to rotate through the side rotating shaft 18. At this time, the support arms 16 at both ends on the left rotate counterclockwise, and the support arms 16 at both ends on the right rotate clockwise. The civil air defense door 2 located on the upper surface of the support platform 1 is gradually lifted upward by a certain height by the support arms 16 through the sliding wheels 17.

[0039] Since the support arm 16 contacts the lower surface of the civil air defense door 2 through the sliding wheel 17, the friction force on the lower surface of the civil air defense door 2 is extremely small at this time. Therefore, after the civil air defense door 2 is lifted, the operator can remove the civil air defense door 2 from the upper surface of the device by pushing the civil air defense door 2, thus achieving the effect of being able to unload the civil air defense door 2 without using a handling machine.

[0040] After the civil air defense door 2 is lifted, the control motor 41 inside the sliding chassis 4 controls the rotation of the transfer tooth column 42. When the transfer tooth column 42 rotates, it can lift the inner sliding disk 43 upward through the tooth groove on the side of the inner sliding disk 43. At this time, the inner sliding disk 43 pushes the welding device 3 upward, and the upper part of the welding device 3 slides out from the cutting groove in the middle of the support platform 1, so as to insert the welding end into the inner frame of the civil air defense door 2, thereby realizing the welding of the inner wall of the inner frame of the civil air defense door 2.

[0041] After the welding device 3 slides out from the middle of the support platform 1, the fixed rotating machine 31 inside twists the inner insertion rod 32. The threaded sleeve 33 on the outer surface of the inner insertion rod 32 spirally ascends along the threaded groove at the bottom of the inner wall of the cooling sleeve 6. At this time, the bottom end of the thrust sleeve 34 slips with the top end of the threaded sleeve 33, so that the thrust sleeve 34 can only be pushed upward along the inner wall of the cooling sleeve 6, thereby pushing the composite welding rod 5 out from the axis of the inner wall of the cooling sleeve 6 and directly inserting it into the cutting groove of the civil air defense door 2.

[0042] Embodiment 2

[0043] Please refer to Figures 1-8 , the present invention provides a technical solution: on the basis of Embodiment 1, the cooling sleeve 6 includes a bent through pipe 61, and the bottom end of the inner wall of the bent through pipe 61 is slidably connected with a round head sliding plug 62. One end of the round head sliding plug 62 far from the side sliding block 36 is fixedly connected with a limit baffle 63 through a built-in spring.

[0044] The outer surface of the side slider 36 is slidably connected to the lower part of the outer surface of the cooling jacket 6. The top end of the bent through pipe 61 extends to the axis of the inner wall of the cooling jacket 6. The bottom end of the bent through pipe 61 is fixedly connected to the opening at the lower part of the inner wall of the cooling jacket 6. The outer surface of the thick bottom cylinder 51 is slidably connected to the lower part of the inner wall of the cooling jacket 6. The axis at the upper part of the inner wall of the welding device 3 is fixedly connected to the upper part of the outer surface of the cooling jacket 6.

[0045] The drainage box 7 includes a sliding filter pipe 74. A fixed insertion rod 73 is slidably connected to the lower part of the inner wall of the sliding filter pipe 74. A vibration spring 75 is fixedly connected to the lower surface of the sliding filter pipe 74. A vortex rotating rod 72 is rotatably connected to the lower part of the inner wall of the fixed insertion rod 73. The axis at the lower surface of the vortex rotating rod 72 is fixedly connected to a cooling motor, and the upper part of the outer surface of the cooling motor housing is fixedly connected to a bottom partition 71.

[0046] The upper surface of the bottom partition 71 is fixedly connected to the lower surface of the welding device 3. Ventilation cut grooves are symmetrically opened on both sides at the upper part of the inner wall of the bottom partition 71. Filter openings are evenly opened at the top end of the inner wall of the sliding filter pipe 74. The lower part of the outer surface of the fixed insertion rod 73 is fixedly connected to the bottom of the inner wall of the welding device 3 through a socket. Both sides at the upper part of the inner wall of the welding device 3 are fixedly connected to the upper surface of the drainage box 7 through through cut grooves.

[0047] When welding work is carried out, the bottom ends of the metal guy wires 53 are pulled by the rotor motors 55 on both sides, so that the metal guy wires 53 are pulled downward. The top ends of the metal guy wires 53 rotate the fixed rotating plate on the outer surface of the rotating joint towards the side close to the axis of the thin connecting rod 52. At this time, the vertically placed adjusting welding rod 54 gradually rotates to the horizontal state and contacts the inner wall of the air defense door 2 at the top end, so as to carry out welding work on the inner frame of the inner wall of the air defense door 2. After welding is completed, the rotor motors 55 stop working. The adjusting welding rod 54 rotates to the vertical state under the action of its own gravity. At this time, the fixed rotating machine 31 rotates in the reverse direction, and the composite welding rod 5 retracts into the inner wall of the cooling jacket 6.

[0048] During the rotation of the output shaft of the fixed rotating machine 31, the side slider 36 will be pulled by the external rotating rod 35 to rotate along the lower part of the outer surface of the cooling jacket 6 in a wall-attached manner. Whenever the side slider 36 sweeps over the top end of the round head sliding plug 62, the round head sliding plug 62 will be squeezed into the inside of the bent through pipe 61. The pressure at the bottom of the bent through pipe 61 increases, and then the air pressure is discharged in the form of wind from the top to the axis of the cooling jacket 6. Therefore, the composite welding rod 5 can be strengthened in heat dissipation effect by the wind force of the side holes. After the side slider 36 sweeps over the top end of the round head sliding plug 62, the bottom end of the round head sliding plug 62 slides out of the inside of the cooling jacket 6 under the thrust of the internal spring, and then prepares for the next blowing action to achieve a cyclic effect.

[0049] When performing welding work, the cooling motor controls the high-speed rotation of the vortex rotating rod 72, extracts the gas above the sliding filter tube 74 to the upper part of the bottom partition plate 71, and discharges it from the slots on both sides of the bottom partition plate 71. When the vortex rotating rod 72 sucks air from top to bottom, the sliding filter tube 74 also slides down along the upper part of the outer surface of the fixed insertion rod 73 under the action of air suction. At this time, the vibration spring 75 is compressed. At the moment when the vortex rotating rod 72 stops rotating, the vibration spring 75 returns to its original state and pushes the sliding filter tube 74 upward. When the sliding filter tube 74 reaches the highest point position, it will stretch the vibration spring 75, so that the sliding filter tube 74 vibrates repeatedly in the vertical direction, and then shakes the residue at the top of the sliding filter tube 74 into the inside of the drainage box 71.

[0050] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An auxiliary welding platform for a civil air defense door, comprising a support platform (1), characterized in that: The lower surface of the support platform (1) is fixedly connected with a heightening platform (11). The upper surface of the support platform (1) is slidably connected with a civil air defense door (2). The inner wall of the support platform (1) is provided with: An axial rotator (15), the outer surface of the casing of the axial rotator (15) is fixedly connected with one side of the axial center of the inner wall of the support platform (1). The outer surface of the output shaft of the axial rotator (15) is fixedly connected with a winding rod (14). The upper and lower sides of the outer surface of the winding rod (14) are symmetrically provided with side tension belts (13). One end of the side tension belt (13) far from the winding rod (14) is fixedly connected with a matching casing (12); A side shaft (18), both ends of the outer surface of the side shaft (18) are rotationally connected with the side surface of the inner wall of the support platform (1) through torque motors. The middle part of the outer surface of the side shaft (18) is meshed with a torque shaft (19). Both ends of the torque shaft (19) extend to the outside of the support platform (1). Both ends of the torque shaft (19) are fixedly connected with support arms (16). One end of the inner wall of the support arm (16) far from the torque shaft (19) is rotationally connected with a sliding wheel (17); A through slot is opened in the middle of the inner wall of the support platform (1). The inner wall of the support platform (1) is slidably connected with a welding device (3) through the through slot. The lower part of the outer surface of the welding device (3) is fixedly connected with a sliding chassis (4); The sliding chassis (4) includes an inner sliding disk (43). Both sides of the outer surface of the inner sliding disk (43) are meshed with a transfer tooth column (42) through meshing tooth grooves. The output shafts of both ends of the transfer tooth column (42) are symmetrically provided with control motors (41). Both sides of the outer surface of the inner sliding disk (43) are fixedly connected with lubricating guide plates (44). Both sides of the outer surface of the inner sliding disk (43) are slidably connected with both sides of the inner wall of the sliding chassis (4) through the lubricating guide plates (44).

2. The auxiliary welding platform for a civil air defense door according to claim 1, characterized in that: One side of the matching casing (12) close to the side tension belt (13) is slidably connected with the side surface of the support platform (1) through a side slot. One end of the matching casing (12) close to the side tension belt (13) is fixedly connected with a buffer gasket. An adaptation groove is opened at one end of the matching casing (12) far from the side tension belt (13), and the shape of the inner wall of the adaptation groove is the same as the shape of the outer surface of the sliding wheel (17).

3. The auxiliary welding platform for a civil air defense door according to claim 1, characterized in that: The side surface of the sliding chassis (4) is fixedly connected with the cutting groove of the inner wall of the heightening platform (11). The outer surface of the casing of the control motor (41) is fixedly connected with the inner wall of the sliding chassis (4). One end of the support arm (16) far from the torque shaft (19) is slidably connected with the lower surface of the civil air defense door (2) through the sliding wheel (17). The side surface of the welding device (3) is slidably connected with the middle part of the inner wall of the platform through the through slot.

4. The auxiliary welding platform for a civil air defense door according to claim 1, characterized in that: The welding device (3) includes a fixed rotating machine (31). The outer surface of the output shaft of the fixed rotating machine (31) is evenly provided with external rotating rods (35). The top of the external rotating rod (35) is fixedly connected with a side slider (36). The top of the output shaft of the fixed rotating machine (31) is fixedly connected with an internal insertion rod (32). The upper part of the outer surface of the internal insertion rod (32) is slidably connected with a threaded rotating sleeve (33) through a vertical chute. The upper part of the outer surface of the threaded rotating sleeve (33) is threadedly connected with a cooling sleeve (6). The top of the threaded rotating sleeve (33) is rotatably connected with a thrust rotating sleeve (34). The upper part of the inner wall of the cooling sleeve (6) is slidably connected with a composite welding rod (5). On both sides of the upper part of the inner wall of the welding device (3), diversion boxes (7) are symmetrically arranged.

5. The auxiliary welding platform for a civil air defense door according to claim 4, characterized in that: The composite welding rod (5) includes a thick bottom cylinder (51). The center of the upper surface of the thick bottom cylinder (51) is fixedly connected with a thin connecting rod (52). On the upper part of the inner wall of the thin connecting rod (52), rotating joints are symmetrically arranged. The outer surfaces of the rotating joints are fixedly connected with metal wire ropes (53) through fixed rotating plates. The bottom end of the metal wire rope (53) is fixedly connected with a rotor motor (55) through a reel. The lower part of the outer surface of the rotating joint is fixedly connected with an adjusting welding rod (54).

6. The auxiliary welding platform for a civil air defense door according to claim 5, characterized in that: The cooling sleeve (6) includes a bent through pipe (61). The bottom end of the inner wall of the bent through pipe (61) is slidably connected with a round head sliding plug (62). One end of the round head sliding plug (62) away from the side slider (36) is fixedly connected with a limit baffle (63) through a built-in spring.

7. The auxiliary welding platform for a civil air defense door according to claim 6, characterized in that: The outer surface of the side slider (36) is slidably connected with the lower part of the outer surface of the cooling sleeve (6). The top end of the bent through pipe (61) extends to the center of the inner wall of the cooling sleeve (6). The bottom end of the bent through pipe (61) is fixedly connected with the opening at the lower part of the inner wall of the cooling sleeve (6). The outer surface of the thick bottom cylinder (51) is slidably connected with the lower part of the inner wall of the cooling sleeve (6). The center of the upper part of the inner wall of the welding device (3) is fixedly connected with the upper part of the outer surface of the cooling sleeve (6).

8. The auxiliary welding platform for a civil air defense door according to claim 5, characterized in that: The diversion box (7) includes a sliding filter pipe (74). The lower part of the inner wall of the sliding filter pipe (74) is slidably connected with a fixed insertion rod (73). The lower surface of the sliding filter pipe (74) is fixedly connected with a vibration spring (75). The lower part of the inner wall of the fixed insertion rod (73) is rotatably connected with a vortex rotating rod (72). The center of the lower surface of the vortex rotating rod (72) is fixedly connected with a cooling motor. The upper part of the outer surface of the cooling motor housing is fixedly connected with a bottom partition plate (71).

9. The auxiliary welding platform for a civil air defense door according to claim 8, characterized in that: The upper surface of the bottom partition plate (71) is fixedly connected with the lower surface of the welding device (3). On both sides of the upper part of the inner wall of the bottom partition plate (71), ventilation cutting grooves are symmetrically opened. The top of the inner wall of the sliding filter pipe (74) is evenly provided with filter openings. The lower part of the outer surface of the fixed insertion rod (73) is fixedly connected with the bottom of the inner wall of the welding device (3) through a socket. On both sides of the upper part of the inner wall of the welding device (3), the upper surface of the diversion box (7) is fixedly connected through a penetrating cutting groove.

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