Windproof, anti-smashing and anti-collapse movable welding shed for welding under ditch

Abstract

A windproof, anti-smashing and anti-collapse movable welding shed for under-ditch welding comprises a main body structure, accessory equipment and functional facilities, the main body structure comprises a steel framework and a thin steel plate, and the accessory equipment and the functional facilities are both arranged in the main body structure. The functional facilities comprise a left ladder stand, a left escape hole structure, a right ladder stand, a right escape hole structure, a front plate signboard, a rear plate signboard and a fireproof cloth curtain, and the accessory equipment comprises a welding fume collector, a fire extinguisher, a ventilator, a power box, a thermometer and a hygrometer. By preventing wind and smashing in a welding operation area, protecting a foundation pit from collapsing and collapsing, changing the welding environment and checking the temperature and humidity of the environment in real time, the welding quality is guaranteed, the construction efficiency is improved, and meanwhile human body and material damage caused by object smashing and collapsing and collapsing is prevented.

Description

Technical Field

[0001] The utility model belongs to the field of welding protection, in particular to a movable welding shed for trench welding which is windproof, smashproof and collapse-proof. Background Art

[0002] With the continuous improvement of urbanization rate and energy conservation and environmental protection requirements, the use of clean energy in thermal engineering has become a trend, and the use of waste heat from power plants for urban centralized heating has developed rapidly in recent years.

[0003] In the construction of the municipal long-distance heating pipeline network, since it is a field operation, the welding work of workers will be restricted by many conditions, such as large pipe diameter, trench depth greater than 3 meters, limited working space under the trench, diagonal welding of pipelines and other construction conditions that affect the operation of welding operations; for example, the external construction environment such as seasonal winds, weather, and ambient temperature affects the quality of welding operations. In particular, factors that affect construction safety, such as objects falling from the trench and foundation pit collapse, are still difficult to prevent. At the same time, welding operations are also prone to generate smoke and dust, which affects the environment.

[0004] Therefore, a safeguard measure that can effectively ensure welding quality and personal safety is particularly important. Utility Model Content

[0005] The utility model aims to provide a movable welding shed for trench welding that is windproof, smash-proof and collapse-proof. It aims to solve the technical problem that it is difficult to prevent factors affecting construction safety such as objects falling from the trench and foundation pit collapse when trench welding is carried out in field operations in municipal long-distance heating pipeline projects. At the same time, it is also necessary to solve the technical problem that construction conditions and external construction environment affect construction quality.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A windproof, smashproof and collapse-proof movable welding shed for trench welding, comprising a main structure, auxiliary equipment and functional facilities.

[0008] The main structure includes steel frame and thin steel plate.

[0009] The steel frame consists of an upper frame and a lower frame.

[0010] The lower half frame includes the main support column, which is a column group composed of two columns arranged at intervals. There are four groups of columns in total, which are located at the four corners of the rectangle.

[0011] The upper half frame includes a rectangular horizontal bottom frame, a rectangular horizontal top frame and short vertical columns between frames. The rectangular horizontal bottom frame includes a front bottom frame beam, a rear bottom frame beam, a left bottom frame beam and a right bottom frame beam. The rectangular horizontal top frame includes a front top frame beam, a rear top frame beam, a left top frame beam and a right top frame beam. The rectangular horizontal bottom frame and the rectangular horizontal top frame have the same size and are arranged vertically opposite to each other. Both ends of the short vertical columns between frames are fixedly connected between the rectangular horizontal bottom frame and the rectangular horizontal top frame, including extension columns fixedly connected at the four corners, and also including support columns spaced between the extension columns.

[0012] The two extended columns on the front side, the front bottom frame beam and the front top frame beam form the front frame, the two extended columns on the rear side, the rear bottom frame beam and the rear top frame beam form the rear frame, the two extended columns on the left side, the left bottom frame beam and the left top frame beam form the left frame, and the two extended columns on the right side, the right bottom frame beam and the right top frame beam form the right frame.

[0013] Thin steel plates are covered and welded on the surface of the steel skeleton to form various panels, and the panels include a top plate, a left side plate, a right side plate, a front side plate and a rear side plate. The front side plate is formed by the front side surface of the front side frame covered with a welded thin steel plate, and the rear side plate is formed by the rear side surface of the rear side frame covered with a welded thin steel plate. The left side plate is formed by the left and right side surfaces of the left frame and the corresponding two groups of column groups being covered with welded thin steel plates, and the right side plate is formed by the left and right sides of the right frame and the corresponding two groups of column groups being covered with welded thin steel plates. The top plate is formed by the top surface of the rectangular horizontal top frame covered with a welded thin steel plate, wherein the left side plate and the right side plate, the front side plate and the rear side plate are symmetrically arranged, the left side plate and the right side plate have the same size, the front side plate and the rear side plate have the same size, and the height of the left side plate and the right side plate is greater than the height of the front side plate and the rear side plate;

[0014] The auxiliary equipment and functional facilities are all arranged inside the main structure. The functional facilities include the left ladder, the left escape hole structure, the right ladder, the right escape hole structure, the front plate sign, the rear plate sign and the fireproof curtain. The auxiliary equipment includes the welding smoke collector, the fire extinguisher, the ventilation fan, the power box, the thermometer and the hygrometer.

[0015] The left ladder is arranged at the rear half of the left side board, the left escape hole structure is arranged on the top board, corresponding to the upper part of the left ladder, the right ladder is arranged at the front half of the right side board, the right escape hole structure is arranged on the top board, corresponding to the upper part of the right ladder, the front plate identification plate is arranged at the front side of the front side board, the rear plate identification plate is arranged at the rear side of the rear side board, there are two fireproof curtains, which are arranged at the bottom of the front side board and the rear side board respectively.

[0016] The welding smoke collector and the fire extinguisher are arranged in the front half of the left side panel and the front side of the left ladder, the ventilation fan and the power box are arranged in the rear half of the right side panel and the rear side of the right ladder, and the thermometer and the hygrometer are fixedly connected at the center of the rear surface of the front side panel or the center of the front surface of the rear side panel.

[0017] Each column group includes two columns, two legs and a connecting beam. The legs are arranged in a one-to-one correspondence with the columns. The top of the leg is fixedly connected to the bottom of the column, and the two ends of the connecting beam are fixedly connected between the bottoms of the columns. Each column group forms a vertical plane. The column groups on the left and right sides are relatively arranged, and the adjacent column groups on the front and back sides are located in the same vertical plane. The columns include corner columns and adjacent columns. The corner columns are located at the corner positions; the extended columns correspond to the corner columns one by one above and below; the legs are variable-section legs that gradually become thinner from top to bottom, and the legs are fixedly connected in the trench structure; the bottom of the column and the legs are exposed from the bottom surface of the thin steel plate.

[0018] An oblique reinforcement support is fixedly connected between the front bottom frame beam and the front corner column, and an oblique reinforcement support is also fixedly connected between the rear bottom frame beam and the rear corner column.

[0019] The upper half frame also includes a horizontal beam between frames, which includes a front support beam, a rear support beam and a top support beam. The two ends of the front support beam are fixedly connected between the middle parts of the two front extension columns, and the two ends of the rear support beam are fixedly connected between the middle parts of the two rear extension columns.

[0020] The top surface support beam is arranged in the rectangular horizontal top frame, and the top surface of the top surface support beam is flush with the top surface of the rectangular horizontal top frame. The two ends of the top surface support beam are fixedly connected between the opposite frame beams of the rectangular horizontal top frame, including left and right side tension beams and front and rear side tension beams. The two ends of the left and right side tension beams are fixedly connected between the left top frame beam and the right top frame beam, and are parallel to the front top frame beam or the rear top frame beam. The two ends of the front and rear side tension beams are fixedly connected between the front top frame beam and the rear top frame beam, and are parallel to the left top frame beam or the right top frame beam.

[0021] The connection positions of the front and rear side tie beams on the rectangular horizontal top frame correspond one to one with the position of the side support column, and the connection positions of the left and right side tie beams on the rectangular horizontal top frame correspond one to one with the position of the side support column.

[0022] The left escape hole structure and the right escape hole structure have the same structure, both of which include an escape hole and a cover plate. The escape hole is opened on the top plate, and the cover plate and the top plate are connected by hinges. The cover plate covers the upper side of the escape hole.

[0023] The left ladder and the right ladder each include a set of steps, which are welded to the steel frame on the corresponding side.

[0024] The four corners on the upper side of the top plate are also fixedly connected with lifting rings.

[0025] The welding smoke collector is located in the upper half of the left side plate, including a collector body and a collector supporting platform. The collector supporting platform includes a hanging frame and a supporting plate. The hanging frame includes a hanging vertical rod and two horizontal hanging beams. One end of the two hanging beams is connected and at a right angle, and the other end of the hanging beam is detachably connected to the front bottom frame beam and the left bottom frame beam respectively to enclose a rectangular frame. The bottom end of the hanging vertical rod is fixedly connected to the right-angle connection of the hanging beam, and the top end of the hanging vertical rod is fixedly connected to the bottom surface of the top support beam; the supporting plate falls on the rectangular frame, and the collector body falls on the supporting plate.

[0026] The fire extinguisher is arranged below the welding smoke collector and located at the lower half of the left side plate, and includes a fire extinguisher fixing frame and a fire extinguisher body. The fire extinguisher fixing frame is fixedly connected to the steel frame of the left side plate, and the fire extinguisher body is fixed on the fire extinguisher fixing frame.

[0027] The ventilation fan is located above the power box, and both are located on the upper half of the right side panel.

[0028] The front plate identification plate has the same structure as the rear plate identification plate, including an identification plate slot with a built-in safety identification plate.

[0029] The fireproof curtain comprises a curtain hook and a curtain body. The curtain hook is fixedly connected to the bottom surfaces of the front side plate and the rear side plate, and the curtain body is hung on the curtain hook.

[0030] Compared with the prior art, the utility model has the following characteristics and beneficial effects:

[0031] The utility model is designed to solve the problem that the welding quality is affected by monsoons, showers, ambient temperature, etc., the foundation pit depth is greater than 3 meters, the working space under the ditch is limited, and the impact of unsafe factors such as high-altitude objects hitting and foundation pit collapse on the life safety of operators can be prevented. It can prevent seasonal winds and showers; check the welding environment temperature and wind speed in real time; collect welding smoke in real time; prevent high-altitude objects from hitting and foundation pit collapse from threatening the construction safety of the working team, improve construction efficiency and quality, and create value for the project in terms of safety measures, construction quality, cost, and time.

[0032] The utility model can be hoisted as a whole, is convenient for transfer and can be repeatedly used. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] Figure 1 It is a structural schematic diagram of the utility model.

[0035] Figure 2 It is a schematic diagram of the structure of the front side plate and the right side plate of the utility model when viewed from above.

[0036] Figure 3It is a schematic diagram of the structure of the rear side plate and the right side plate of the utility model when viewed from above.

[0037] Figure 4 It is a bottom view structural schematic diagram of the rear side plate and the left side plate of the utility model.

[0038] Figure 5 It is a schematic diagram of the structure of the front side plate and the left side plate of the utility model when viewed from above.

[0039] Figure 6 It is a schematic diagram of the structure of the front side plate and the left side plate of the utility model when viewed from another angle.

[0040] Figure 7 yes Figure 1 A disassembled diagram of each side panel.

[0041] Figure 8 It is a structural schematic diagram of the steel frame of the utility model.

[0042] Reference numerals:

[0043] 1-rectangular horizontal bottom frame, 11-front bottom frame beam, 12-rear bottom frame beam, 13-left bottom frame beam, 14-right bottom frame beam; 2-rectangular horizontal top frame, 21-front top frame beam, 22-rear top frame beam, 23-left top frame beam, 24-right top frame beam; 3-vertical short columns between frames, 31-extension columns, 32-support columns;

[0044] 4-top plate, 41-left escape hole structure, 42-right escape hole structure;

[0045] 5-left side board, 51-left ladder;

[0046] 6-right side panel, 61-right ladder;

[0047] 7-front side panel, 71-front panel identification plate;

[0048] 8-rear side panel, 81-rear panel identification plate;

[0049] 9 - column group, 91 - column, 911 - corner column, 912 - adjacent column, 92 - support leg, 93 - connecting beam;

[0050] 10-fireproof curtain, 101-curtain body, 102-curtain hook;

[0051] 15 - welding smoke collector, 151 - collector body, 152 - supporting plate, 153 - hanging vertical rod, 154 - hanging beam;

[0052] 16-fire extinguisher, 161-fire extinguisher body, 162-fire extinguisher fixing bracket;

[0053] 17 - ventilation fan, 18 - power box, 19 - thermometer, 20 - hygrometer, 25 - oblique reinforcement support, 26 - front support beam, 27 - rear support beam;

[0054] 28 - top support beam, 281 - left and right side tie beams, 282 - front and rear side tie beams;

[0055] 29 - Rings. DETAILED DESCRIPTION

[0056] See the examples Figure 1-8 As shown, a movable welding shed for trench welding that is wind-proof, smash-proof, and collapse-proof includes a main structure, auxiliary equipment, and functional facilities.

[0057] See also Figure 1 As shown, the main structure includes a steel frame and thin steel plates.

[0058] The steel frame consists of an upper frame and a lower frame:

[0059] See also Figure 8 As shown, the lower half frame includes main support columns, which are column groups 9 composed of double columns arranged at intervals. There are four column groups 9, which are respectively located at the four corners of the rectangle.

[0060] Each column group 9 includes two columns 91, two legs 92 and a connecting beam 93. The legs 92 are arranged in a one-to-one correspondence with the columns 91. The top of the leg 92 is fixedly connected to the bottom of the column 91, and the two ends of the connecting beam 93 are fixedly connected between the bottoms of the columns 91. Each column group 9 forms a vertical plane. The column groups 9 on the left and right sides are relatively arranged, and the adjacent column groups 9 on the front and back sides are located in the same vertical plane. The column 91 includes a corner column 911 and an adjacent column 912. The corner column 911 is located at the corner position; the extended column 31 corresponds to the corner column 911 one by one; the leg 92 is a tapered leg with a variable cross-section that gradually becomes thinner from top to bottom, and the leg 92 is fixedly connected in the trench structure; the bottom of the column 91 and the leg 92 are exposed from the bottom surface of the thin steel plate.

[0061] The upper half frame includes a rectangular horizontal bottom frame 1, a rectangular horizontal top frame 2 and short vertical columns 3 between frames. The rectangular horizontal bottom frame 1 includes a front bottom frame beam 11, a rear bottom frame beam 12, a left bottom frame beam 13 and a right bottom frame beam 14. The rectangular horizontal top frame 2 includes a front top frame beam 21, a rear top frame beam 22, a left top frame beam 23 and a right top frame beam 24. The rectangular horizontal bottom frame 1 and the rectangular horizontal top frame 2 have the same size and are arranged vertically opposite to each other. Both ends of the short vertical columns 3 between frames are fixedly connected between the rectangular horizontal bottom frame 1 and the rectangular horizontal top frame 2, including extension columns 31 fixedly connected at the four corners, and also including support columns 32 spaced between the extension columns 31.

[0062] The upper half frame also includes a horizontal beam between the frames, which includes a front support beam 26, a rear support beam 27 and a top support beam 28. The two ends of the front support beam 26 are fixedly connected between the middle parts of the two front extension columns 31, and the two ends of the rear support beam 27 are fixedly connected between the middle parts of the two rear extension columns 31.

[0063] The top surface support beam 28 is arranged in the rectangular horizontal top frame 2, and the top surface of the top surface support beam 28 is flush with the top surface of the rectangular horizontal top frame 2. The two ends of the top surface support beam 28 are fixedly connected between the opposite frame beams of the rectangular horizontal top frame 2, including left and right side tension beams 281 and front and rear side tension beams 282. The two ends of the left and right side tension beams 281 are fixedly connected between the left top frame beam 23 and the right top frame beam 24, and are parallel to the front top frame beam 21 or the rear top frame beam 22. The two ends of the front and rear side tension beams 282 are fixedly connected between the front top frame beam 21 and the rear top frame beam 22, and are parallel to the left top frame beam 23 or the right top frame beam 24.

[0064] The connection positions of the front and rear side connecting beams 282 on the rectangular horizontal top frame 2 correspond to the positions of the side support columns 32 , and the connection positions of the left and right side connecting beams 281 on the rectangular horizontal top frame 2 correspond to the positions of the side support columns 32 .

[0065] The two extended columns 31 on the front side, the front bottom frame beam 11 and the front top frame beam 21 form a front frame, the two extended columns 31 on the rear side, the rear bottom frame beam 12 and the rear top frame beam 22 form a rear frame, the two extended columns 31 on the left side, the left bottom frame beam 13 and the left top frame beam 23 form a left frame, and the two extended columns 31 on the right side, the right bottom frame beam 14 and the right top frame beam 24 form a right frame.

[0066] An oblique reinforcement support 25 is fixedly connected between the front bottom frame beam 11 and the front corner column 911, and an oblique reinforcement support 25 is also fixedly connected between the rear bottom frame beam 12 and the rear corner column 911. The oblique reinforcement support 25 is at an angle of 45 degrees.

[0067] See also Figure 1 , Figure 7-8As shown, thin steel plates are covered and welded on the surface of the steel skeleton to form various panels, and the panels include a top plate 4, a left side plate 5, a right side plate 6, a front side plate 7 and a rear side plate 8. The front side plate 7 is formed by covering the front side surface of the front side frame with a welded thin steel plate, and the rear side plate 8 is formed by covering the rear side surface of the rear side frame with a welded thin steel plate. The left side plate 5 is formed by covering the left and right sides of the left frame and the corresponding two groups of column groups 9 with welded thin steel plates, and the right side plate 6 is formed by covering the left and right sides of the right frame and the corresponding two groups of column groups 9 with welded thin steel plates. The top plate 4 is formed by covering the top surface of the rectangular horizontal top frame 2 with a welded thin steel plate, wherein the left side plate 5 and the right side plate 6, the front side plate 7 and the rear side plate 8 are symmetrically arranged respectively, the left side plate 5 and the right side plate 6 have the same size, the front side plate 7 and the rear side plate 8 have the same size, and the height of the left side plate 5 and the right side plate 6 is greater than the height of the front side plate 7 and the rear side plate 8.

[0068] See also Figure 2-7 As shown, the ancillary equipment and functional facilities are all arranged inside the main structure. The functional facilities include a left ladder 51, a left escape hole structure 41, a right ladder 61, a right escape hole structure 42, a front plate identification plate 71, a rear plate identification plate 81 and a fireproof curtain 10. The ancillary equipment includes a welding smoke collector 15, a fire extinguisher 16, a ventilation fan 17, a power box 18, a thermometer 19 and a hygrometer 20.

[0069] The left ladder 51 is arranged at the rear half of the left side plate 5, the left escape hole structure 41 is arranged on the top plate 4, corresponding to the upper part of the left ladder 51, the right ladder 61 is arranged on the front half of the right side plate 6, and the right escape hole structure 42 is arranged on the top plate 4, corresponding to the upper part of the right ladder 61. The left ladder 51 and the right ladder 61 both include a set of steps, which are formed into a U-shape by bending round steel, and the steps are welded to the steel frame on the corresponding side. The left escape hole structure 41 and the right escape hole structure 42 have the same structure, both including an escape hole and a cover plate, the escape hole is opened on the top plate 4, the cover plate and the top plate 4 are connected by hinges, and the cover plate covers the upper side of the escape hole.

[0070] The front plate identification plate 71 is arranged on the front side of the front side plate 7, and the rear plate identification plate 81 is arranged on the rear side of the rear side plate 8. The fireproof curtain 10 has two pieces, which are arranged at the bottom of the front side plate 7 and the rear side plate 8 respectively. The front plate identification plate 71 and the rear plate identification plate 81 have the same structure, including an identification plate slot with a safety identification plate therein.

[0071] The fireproof curtain 10 includes a curtain hook 102 and a curtain body 101 . The curtain hook 102 is fixedly connected to the bottom surfaces of the front side plate 7 and the rear side plate 8 , and the curtain body 101 is hung on the curtain hook 102 .

[0072] The welding smoke collector 15 and the fire extinguisher 16 are arranged at the front half of the left side plate 5 and in front of the left ladder 51 .

[0073] The welding smoke collector 15 is mainly used for welding smoke collection and environmental protection. The welding smoke collector 15 is located in the upper half of the left side plate 5, including a collector body 151 and a collector support platform. The collector support platform includes a hanging frame and a support plate 152. The hanging frame includes a hanging vertical rod 153 and two horizontal hanging beams 154. One end of the two hanging beams 154 is connected and at a right angle, and the other end of the hanging beam 154 is detachably connected to the front bottom frame beam 11 and the left bottom frame beam 13, respectively, to form a rectangular frame. The bottom end of the hanging vertical rod 153 is fixedly connected to the right-angle connection of the hanging beam 154, and the top end of the hanging vertical rod 153 is fixedly connected to the bottom surface of the top support beam 28; the support plate 152 falls on the rectangular frame, and the collector body 151 falls on the support plate 152. The smoking port of the collector body 151 is adjusted according to the welding position.

[0074] The fire extinguisher 16 is arranged below the welding smoke collector 15 and located at the lower half of the left side plate 5, and includes a fire extinguisher fixing frame 162 and a fire extinguisher body 161. The fire extinguisher fixing frame 162 is fixedly connected to the steel frame of the left side plate 5, and the fire extinguisher body 161 is fixed on the fire extinguisher fixing frame 162. The fire extinguisher fixing frame 162 is composed of two circular circles distributed up and down, and the center of the bottom circular circle is cross-welded by two steel bars to hold the fire extinguisher body 161. The fire extinguisher body 161 is a portable dry powder fire extinguisher.

[0075] The ventilation fan 17 and the power supply box 18 are arranged at the rear half of the right side plate 6 and the rear side of the right ladder 61. The ventilation fan 17 is located above the power supply box 18. Both are located at the upper half of the right side plate 6. The ventilation fan is a wall-type ventilation fan, which is staggered from the position of the escape hole. The thermometer 19 and the hygrometer 20 are both fixedly connected to the center of the rear side surface of the front side plate 7 or the center of the front side surface of the rear side plate 8.

[0076] See also Figure 1 and Figure 7 As shown, the four corners of the top plate 4 are also fixedly connected with hanging rings 29.

[0077] The various components of the utility model have the following functions:

[0078] The steel frame is made of channel steel, and the panels are all made of thin steel plates. The columns 91 and the legs 92 are welded and connected to form a solid structure to prevent life safety accidents caused by earth collapse on both sides or falling objects from high altitude.

[0079] The top plate 4 is provided with two escape holes, so that the operators can escape from the left ladder 51 or the right ladder 61 in case of emergency. The escape holes and the cover plate are usually closed. In case of emergency, the cover plate is opened and hydraulically supported by the hydraulic push rod.

[0080] A left ladder 51 is provided on the left side plate 5 for escaping in an emergency when working on the left side. At the same time, a fire extinguisher fixing frame 162 is provided on the left side plate 5 for placing a fire extinguisher body 161 for extinguishing fire when other combustibles burn due to welding.

[0081] The right side plate 6 is provided with a right ladder 61, which is convenient for escaping in an emergency when working on the right side. At the same time, a ventilation fan 17 is provided on the right side plate 6 for winter construction. Because the fire curtain 10 is put down, the air in the welding shed is dirty, and ventilation is used.

[0082] The power box 18 is mainly used for electricity consumption in the welding shed and for connecting the ventilation fan 17 to the power supply.

[0083] The front side plate 7 is provided with an identification card slot for receiving the identification card, and the rear side plate 8 is also provided with an identification card slot for receiving the identification card.

[0084] The curtain hook 102 is used to hang the curtain body 101, so as to be used for hanging the fireproof curtain in winter or when it is windy.

[0085] The thermometer 19 and the hygrometer 20 are mainly used to measure the ambient temperature and humidity in the welding shed.

[0086] The oblique reinforcement support 25 is mainly used to reinforce the force of the corner column 911.

[0087] The utility model can protect the welding operation area from wind, smashing and foundation pit collapse, change the welding environment and monitor the ambient temperature and humidity in real time, ensure the welding quality, and improve the construction efficiency. At the same time, it can prevent human body and material damage caused by falling objects and collapse.

Claims

1. A windproof, anti-smashing and anti-collapse movable welding shed for trench welding, characterized by: Including the main structure, auxiliary equipment and functional facilities, The main structure includes steel frame and thin steel plate. The steel frame consists of an upper frame and a lower frame. The lower half frame includes a main support column, which is a column group (9) composed of two columns arranged at intervals. There are four column groups (9) in total, which are respectively located at the four corners of the rectangle. The upper half frame comprises a rectangular horizontal bottom frame (1), a rectangular horizontal top frame (2) and a short vertical column (3) between the frames. The rectangular horizontal bottom frame (1) comprises a front bottom frame beam (11), a rear bottom frame beam (12), a left bottom frame beam (13) and a right bottom frame beam (14). The rectangular horizontal top frame (2) comprises a front top frame beam (21), a rear top frame beam (22), a left top frame beam (23) and a right top frame beam (24). The rectangular horizontal bottom frame (1) and the rectangular horizontal top frame (2) have the same size and are arranged vertically opposite to each other. Both ends of the short vertical column (3) between the rectangular horizontal bottom frame (1) and the rectangular horizontal top frame (2) are fixedly connected between the rectangular horizontal bottom frame (1) and the rectangular horizontal top frame (2). The short vertical column (3) comprises extension columns (31) fixedly connected at four corners and support columns (32) arranged between the extension columns (31) at intervals. The two front extension columns (31), the front bottom frame beam (11) and the front top frame beam (21) form a front frame, the two rear extension columns (31), the rear bottom frame beam (12) and the rear top frame beam (22) form a rear frame, the two left extension columns (31), the left bottom frame beam (13) and the left top frame beam (23) form a left frame, the two right extension columns (31), the right bottom frame beam (14) and the right top frame beam (24) form a right frame, The thin steel plates are covered and welded on the surface of the steel frame to form various panels, and the panels include a top plate (4), a left side plate (5), a right side plate (6), a front side plate (7) and a rear side plate (8). The front side plate (7) is formed by the front side surface of the front side frame covered with a welded thin steel plate, and the rear side plate (8) is formed by the rear side surface of the rear side frame covered with a welded thin steel plate. The left side plate (5) is formed by the left side frame and the corresponding two groups of column groups (9) both covered with welded thin steel plates. The right side plate (6) is formed by the right side frame and the corresponding The left and right surfaces of the two groups of column groups (9) are covered with welded thin steel plates on both sides, and the top plate (4) is formed by covering the top surface of the rectangular horizontal top frame (2) with welded thin steel plates, wherein the left side plate (5) and the right side plate (6), the front side plate (7) and the rear side plate (8) are symmetrically arranged, the left side plate (5) and the right side plate (6) have the same size, the front side plate (7) and the rear side plate (8) have the same size, and the height of the left side plate (5) and the right side plate (6) is greater than the height of the front side plate (7) and the rear side plate (8); The auxiliary equipment and functional facilities are all arranged inside the main structure. The functional facilities include a left ladder (51), a left escape hole structure (41), a right ladder (61), a right escape hole structure (42), a front plate identification plate (71), a rear plate identification plate (81) and a fireproof curtain (10). The auxiliary equipment includes a welding smoke collector (15), a fire extinguisher (16), a ventilation fan (17), a power supply box (18), a thermometer (19) and a hygrometer (20). A left ladder (51) is arranged at the rear half of the left side plate (5), a left escape hole structure (41) is arranged on the top plate (4) and corresponds to the top of the left ladder (51), a right ladder (61) is arranged at the front half of the right side plate (6), a right escape hole structure (42) is arranged on the top plate (4) and corresponds to the top of the right ladder (61), a front plate identification plate (71) is arranged at the front side of the front side plate (7), a rear plate identification plate (81) is arranged at the rear side of the rear side plate (8), and two fireproof curtains (10) are arranged at the bottom of the front side plate (7) and the bottom of the rear side plate (8), respectively. The welding smoke collector (15) and the fire extinguisher (16) are arranged at the front half of the left side plate (5) and the front side of the left ladder (51); the ventilation fan (17) and the power supply box (18) are arranged at the rear half of the right side plate (6) and the rear side of the right ladder (61); and the thermometer (19) and the hygrometer (20) are both fixedly connected to the center of the rear side surface of the front side plate (7) or the center of the front side surface of the rear side plate (8).

2. The movable welding shed for trench welding according to claim 1 is characterized by: Each column group (9) comprises two columns (91), two legs (92) and a connecting beam (93), the legs (92) and the columns (91) are arranged one-to-one, the top of the legs (92) is fixedly connected to the bottom of the columns (91), and the two ends of the connecting beam (93) are fixedly connected between the bottoms of the columns (91), each column group (9) forms a vertical plane, the column groups (9) on the left and right sides are arranged opposite to each other, and the column groups (9) adjacent to each other on the front and rear sides are located in the same vertical plane, the columns (91) comprise corner columns (911) and adjacent columns (912), and the corner columns (911) are located at the corner positions; the extension columns (31) and the corner columns (911) correspond one-to-one from top to bottom; the legs (92) are variable cross-section legs that gradually become thinner from top to bottom, and the legs (92) are fixedly connected to the structure under the trench; the bottom of the columns (91) and the legs (92) are exposed from the bottom surface of the thin steel plate.

3. The movable welding shed for trench welding according to claim 2 is characterized by: An oblique reinforcement support (25) is fixedly connected between the front bottom frame beam (11) and the front corner column (911), and an oblique reinforcement support (25) is also fixedly connected between the rear bottom frame beam (12) and the rear corner column (911).

4. The movable welding shed for trench welding according to claim 1 is characterized by: The upper half frame also includes an inter-frame horizontal beam, which includes a front support beam (26), a rear support beam (27) and a top support beam (28), wherein both ends of the front support beam (26) are fixedly connected between the middle parts of the two front extension columns (31), and both ends of the rear support beam (27) are fixedly connected between the middle parts of the two rear extension columns (31). A top surface support beam (28) is arranged in the rectangular horizontal top frame (2), the top surface of the top surface support beam (28) is flush with the top surface of the rectangular horizontal top frame (2), and both ends of the top surface support beam (28) are fixedly connected between the frame beams opposite to each other in the rectangular horizontal top frame (2), including left and right side tie beams (281) and front and rear side tie beams (282), the two ends of the left and right side tie beams (281) are fixedly connected between the left top frame beam (23) and the right top frame beam (24), and are parallel to the front top frame beam (21) or the rear top frame beam (22), and the two ends of the front and rear side tie beams (282) are fixedly connected between the front top frame beam (21) and the rear top frame beam (22), and are parallel to the left top frame beam (23) or the right top frame beam (24).

5. The movable welding shed for trench welding according to claim 4 is characterized by: The connection positions of the front and rear side tie beams (282) on the rectangular horizontal top frame (2) correspond one-to-one to the positions of the side support columns (32), and the connection positions of the left and right side tie beams (281) on the rectangular horizontal top frame (2) correspond one-to-one to the positions of the side support columns (32).

6. The movable welding shed for trench welding that is windproof, smash-proof, and collapse-proof according to claim 1 is characterized by: The left escape hole structure (41) and the right escape hole structure (42) have the same structure, both comprising an escape hole and a cover plate. The escape hole is formed on the top plate (4). The cover plate and the top plate (4) are connected by hinges and can be opened and closed. The cover plate covers the upper side of the escape hole. The left ladder (51) and the right ladder (61) each include a set of steps, which are welded to the steel frame on the corresponding side. The four corners of the upper side of the top plate (4) are also fixedly connected with lifting rings (29).

7. The movable welding shed for trench welding that is windproof, smash-proof, and collapse-proof according to claim 1 is characterized by: The welding smoke collector (15) is located at the upper half of the left side plate (5), and comprises a collector body (151) and a collector support platform, wherein the collector support platform comprises a hanging frame and a support plate (152), wherein the hanging frame comprises a hanging vertical rod (153) and two horizontal hanging beams (154), wherein one end of the two hanging beams (154) are connected and form a right angle, and the other end of the hanging beam (154) is detachably connected to the front bottom frame beam (11) and the left bottom frame beam (13), respectively, to enclose and form a rectangular frame, wherein the bottom end of the hanging vertical rod (153) is fixedly connected to the right-angle connection of the hanging beam (154), and the top end of the hanging vertical rod (153) is fixedly connected to the bottom surface of the top support beam (28); the support plate (152) is placed on the rectangular frame, and the collector body (151) is placed on the support plate (152).

8. The movable welding shed for trench welding according to claim 7 is characterized by: The fire extinguisher (16) is arranged below the welding smoke collector (15) and located at the lower half of the left side plate (5), and comprises a fire extinguisher fixing frame (162) and a fire extinguisher body (161); the fire extinguisher fixing frame (162) is fixedly connected to the steel frame of the left side plate (5), and the fire extinguisher body (161) is fixed on the fire extinguisher fixing frame (162).

9. The movable welding shed for trench welding according to claim 1 is characterized by: The ventilation fan (17) is located above the power supply box (18), and both are located on the upper half of the right side plate (6).

10. The movable welding shed for trench welding that is windproof, smash-proof, and collapse-proof according to claim 1 is characterized by: The front plate identification plate (71) and the rear plate identification plate (81) have the same structure, including an identification plate slot with a safety identification plate therein. The fireproof curtain (10) comprises a curtain hook (102) and a curtain body (101); the curtain hook (102) is fixedly connected to the bottom surfaces of the front side plate (7) and the rear side plate (8); and the curtain body (101) is hung on the curtain hook (102).

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