A cooling device and method for welding box-type steel structures in heavy-duty workshops.

Abstract

This invention relates to the field of steel structure welding technology, and more particularly to a cooling device and method for welding box-type steel structures in heavy-duty workshops. The device includes a platform, a water storage tank installed within an installation cavity, an inlet pipe installed in the water storage tank, a first hollow rod installed in the inlet pipe, a first piston rod inserted within the first hollow rod, and an outlet pipe installed in the first hollow rod. A first water collection box is installed in the outlet pipe. Multiple cooling pipes are installed on the platform, and a second water collection box is fixedly installed at one end of each cooling pipe. The first piston rod is controlled to move laterally and reciprocally via a drive assembly. During welding of the steel structure, the steel structure can be placed on the multiple cooling pipes. The drive assembly then controls the intermittent flow of coolant from the water storage tank into the multiple cooling pipes, achieving circulation. During circulation, the coolant absorbs the heat generated at the welding point, achieving rapid cooling with good cooling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure welding, and particularly relates to a cooling device for welding of box-shaped steel structure in a heavy load workshop and a method thereof. BACKGROUND

[0002] In order to conveniently support a building, a box-shaped steel structure spliced on site is often selected as a reinforcing tool at a construction site, and the steel structure needs to be welded by a welding device. In the welding process, a large amount of heat is generated at the welding position, and if the heat cannot be effectively cooled in time, cracks and deformation may occur in the welding area, which affects the strength and stability of the steel structure. Therefore, the welding position of the steel structure needs to be cooled by a cooling device.

[0003] The existing cooling device is mostly cooled by air cooling, that is, air is blown to the welding position of the steel structure. The cooling efficiency of this method is low, and in the air cooling process, some welding scraps generated in the welding process may be blown to various places, which makes it difficult to clean up. SUMMARY

[0004] The present application aims to solve the following shortcomings in the prior art: the existing cooling device is mostly cooled by air cooling, that is, air is blown to the welding position of the steel structure. The cooling efficiency of this method is low, and in the air cooling process, some welding scraps generated in the welding process may be blown to various places, which makes it difficult to clean up. A cooling device for welding of box-shaped steel structure in a heavy load workshop and a method thereof are provided.

[0005] To achieve the above object, the present application adopts the following technical scheme:

[0006] A cooling device for welding of box-shaped steel structure in a heavy load workshop, comprising a table body, a welding mechanical arm is fixedly installed on the back of the table body, an installation cavity is formed in the table body, a through opening is formed in the back of the table body and communicates with the installation cavity, a door cover is rotatably installed in the through opening, a water storage tank is fixedly installed in the installation cavity, the water storage tank is filled with cooling liquid, a water inlet pipe is fixedly installed on the side wall of the water storage tank and communicates with the water storage tank, one end of the water inlet pipe located outside the water storage tank is fixedly installed with a first hollow rod with a closed end, a first piston rod is slidingly and sealingly inserted into the first hollow rod, a water outlet pipe is fixedly installed on the upper surface of the first hollow rod, and a first one-way valve is arranged in the water inlet pipe and the water outlet pipe.

[0007] The top end of the water outlet pipe is fixedly installed with a first water collecting box in communication with itself, a plurality of water outlets are formed in the upper surface of the first water collecting box, a plurality of U-shaped cooling pipes are fixedly installed on the upper surface of the table body, both ends of the cooling pipes penetrate into the installation cavity, one end of the plurality of cooling pipes respectively covers a plurality of water outlets, and the other end is fixedly installed with a second water collecting box in communication with itself, the second water collecting box is in communication with the water storage tank through a backwater pipe, and the first piston rod is controlled to move laterally reciprocatingly by the driving assembly.

[0008] Preferably, the driving assembly comprises a driving motor fixedly installed on the side wall of the table body, a reciprocating screw rod, and a sliding plate threadedly connected to the reciprocating screw rod, the output shaft of the driving motor penetrates into the installation cavity and is fixedly connected with the reciprocating screw rod, and one end of the first piston rod is fixedly connected with the surface of the sliding plate.

[0009] Preferably, an L-shaped placement plate is fixedly installed on the upper surface of the table body, a cavity is formed in the placement plate, a mist sprayer is fixedly installed on the lower surface of the placement plate and in communication with the cavity, and a water supply assembly for spraying the cooling liquid in the water storage tank from the mist sprayer in a mist form is arranged in the installation cavity.

[0010] Preferably, the water supply assembly comprises a liquid inlet pipe, a liquid outlet pipe, a second hollow rod with a closed end, and a second piston rod slidingly and sealingly inserted into the second hollow rod, the liquid inlet pipe is fixedly installed on the side wall of the water storage tank and in communication with the water storage tank, one end of the liquid inlet pipe located outside the water storage tank is fixedly connected with the closed end of the second hollow rod, one end of the second piston rod is fixedly connected with the surface of the sliding plate, both ends of the liquid outlet pipe are fixedly connected with the second hollow rod and the placement plate respectively and in communication with the second hollow rod and the cavity respectively, and second one-way valves are arranged in the liquid inlet pipe and the liquid outlet pipe.

[0011] Preferably, a sliding opening is formed in the surface of one end of the cooling pipe connected with the first water collecting box, a baffle for covering the water outlet is slidingly inserted into the sliding opening, and the baffle is controlled to move laterally by a pressing assembly.

[0012] Preferably, the pressing assembly comprises an inclined plate fixedly installed on one end of the baffle, an inclined opening formed in the surface of the inclined plate, a work-shaped block slidingly arranged in the inclined opening, and L-shaped connecting plates fixedly installed on the surface of the work-shaped block, a plurality of the connecting plates are respectively located directly below a plurality of the cooling pipes, a stress rod is fixedly installed on the upper surface of the connecting plate, a through hole penetrating through the top of the table body is vertically formed in the upper surface of the cooling pipe, a plurality of the stress rods are vertically and slidingly and sealingly inserted into the through hole and connected with the cavity wall through an extension component.

[0013] Preferably, the extension component comprises an extension spring sleeved on the stress rod, and both ends of the extension spring are fixedly connected with the upper surface of the connecting plate and the top wall of the installation cavity respectively.

[0014] Preferably, the water storage tank is provided with a display component for displaying the level of the cooling liquid in the water storage tank outside the table body.

[0015] Preferably, the display component comprises a U-shaped water pipe, the water storage tank is provided with a first mounting opening, the table body is provided with a second mounting opening, the first mounting opening and the second mounting opening are located on the same horizontal line, the water pipe is fixedly installed in the first mounting opening and the second mounting opening, two ends of the water pipe are located in the water storage tank and outside the table body respectively, a water inlet is horizontally arranged on the bottom surface of the water pipe in the water storage tank, and the water pipe is made of transparent material.

[0016] A method for welding a heavy load workshop box type steel structure cooling device, first, the steel structure to be welded is placed on the upper surface of the plurality of cooling pipes, after welding, the first piston rod can be controlled to move transversely by the driving assembly, in the moving process, the volume in the first hollow rod will change from small to large, and then from large to small, when the volume in the first hollow rod becomes larger, the pressure decreases, the cooling liquid in the water storage tank enters the first hollow rod from the water inlet pipe, and when the volume in the first hollow rod becomes smaller, the pressure increases, the cooling liquid in the first hollow rod enters the first water collecting box from the water outlet pipe, and then enters the plurality of cooling pipes, the cooling liquid flows in the cooling pipes, and then enters the second water collecting box, and finally enters the water storage tank from the backwater pipe, so that a water circulation effect is achieved, when the cooling liquid circulates in the cooling pipes, the heat generated by the welding position can be absorbed, and a rapid cooling effect is achieved.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] 1、In the process of welding the steel structure, the steel structure can be placed on the plurality of cooling pipes, then the cooling liquid in the water storage tank is intermittently introduced into the plurality of cooling pipes through the driving assembly, and circulation is realized, the heat generated by the welding position can be absorbed in the process of circulation of the cooling liquid, a rapid cooling effect is achieved, and the cooling effect is good;

[0019] 2、When the cooling liquid circulates in the cooling pipes, part of the cooling liquid in the water storage tank is also sprayed in mist form from the mist-shaped spray head, the mist-shaped cooling liquid also cools the welding station which does not contact the cooling pipe, and the overall cooling efficiency of the welding station is accelerated;

[0020] 3. With the cooperation between the pressure component and the baffle, when the steel structure is placed on multiple cooling pipes, the cooling pipes that are not in contact with the steel structure will be in a closed state, while the cooling pipes that are in contact with the steel structure will be in an open state. This ensures that the cooling pipes that are not in contact with the steel structure will not be supplied with coolant, thus avoiding the coolant from doing useless work and improving the utilization rate of the coolant.

[0021] 4. Operators can quickly know the level of coolant in the reservoir through the display unit outside the workpiece, and thus determine whether coolant needs to be added. There is no need to open the door to check the amount of coolant in the reservoir, avoiding the inability to properly cool the welding parts due to untimely addition of coolant. Attached Figure Description

[0022] Figure 1 This is a frontal perspective view of the present invention;

[0023] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a side-view perspective view of the three-dimensional structure of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the front portion of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram of the bottom view portion of the present invention;

[0027] Figure 6 This is a schematic diagram of a portion of the three-dimensional structure of the multiple cooling pipes, reciprocating lead screw, first hollow rod, and second hollow rod in this invention.

[0028] Figure 7 This is a partial three-dimensional structural diagram of the baffle and the pressing component in this invention;

[0029] Figure 8 This is a partial three-dimensional structural diagram of the first water collection box in this invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the water pipe in this invention;

[0031] Figure 10 for Figure 1 Enlarged structural diagram at point A in the middle;

[0032] Figure 11 for Figure 4 Enlarged structural diagram at point B;

[0033] Figure 12 for Figure 5 Enlarged structural diagram at point C.

[0034] In the figure: 1 table body, 2 welding mechanical arm, 3 installation cavity, 4 door cover, 5 water storage tank, 6 water inlet, 7 water inlet pipe, 8 first hollow rod, 9 first piston rod, 10 water outlet pipe, 11 first water collecting box, 12 cooling pipe, 13 second water collecting box, 14 water return pipe, 15 driving motor, 16 reciprocating screw rod, 17 sliding plate, 18 setting plate, 19 mist nozzle, 20 liquid inlet pipe, 21 liquid outlet pipe, 22 second hollow rod, 23 second piston rod, 24 sliding port, 25 baffle, 26 inclined plate, 27 inclined port, 28 I-shaped block, 29 connecting plate, 30 force bar, 31 extension spring, 32 water pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0036] Reference Figures 1-12 A cooling device for welding of heavy-duty workshop box-type steel structure, comprising a table body 1, a welding mechanical arm 2 fixedly installed on the back of the table body 1, an installation cavity 3 formed in the table body 1, a through opening formed in the back of the table body 1 and communicating with the installation cavity 3, a door cover 4 rotatably installed in the through opening, a water storage tank 5 fixedly installed in the installation cavity 3, the water storage tank 5 being filled with cooling liquid, a water inlet pipe 7 fixedly installed on the side wall of the water storage tank 5 and communicating with the water storage tank 5, one end of the water inlet pipe 7 located outside the water storage tank 5 being fixedly installed with a first hollow rod 8 with a closed end, a first piston rod 9 being slidably and sealingly inserted into the first hollow rod 8, a water outlet pipe 10 fixedly installed on the upper surface of the first hollow rod 8, and first one-way valves being arranged in the water inlet pipe 7 and the water outlet pipe 10.

[0037] A first water collecting box 11 fixedly installed on the top end of the water outlet pipe 10 and communicating with the water outlet pipe 10, the first one-way valve in the water inlet pipe 7 being in a conductive direction from the water storage tank 5 to the first hollow rod 8, the first one-way valve in the water outlet pipe 10 being in a conductive direction from the first hollow rod 8 to the first water collecting box 11, a plurality of water outlets being formed in the upper surface of the first water collecting box 11, a plurality of U-shaped cooling pipes 12 fixedly installed on the upper surface of the table body 1, both ends of the cooling pipes 12 penetrating into the installation cavity 3, one end of each of the plurality of cooling pipes 12 covering one of the plurality of water outlets, the other end of each of the plurality of cooling pipes 12 being fixedly installed with a second water collecting box 13 communicating with the cooling pipe 12, the second water collecting box 13 being connected to the water storage tank 5 through a water return pipe 14, the first piston rod 9 being controlled to move transversely by a driving assembly, the driving assembly comprising a driving motor 15 fixedly installed on the side wall of the table body 1, a reciprocating screw rod 16, and a sliding plate 17 threadedly connected to the reciprocating screw rod 16, the output shaft of the driving motor 15 penetrating into the installation cavity 3 and being fixedly connected to the reciprocating screw rod 16, one end of the first piston rod 9 being fixedly connected to the surface of the sliding plate 17.

[0038] First to be welded steel structure placed on the upper surface of the plurality of cooling tubes 12, after welding, can be started by driving motor 15, the output shaft of the driving motor 15 will rotate with reciprocating screw rod 16, the sliding plate 17 threaded sleeve on the reciprocating screw rod 16 will be with the first piston rod 9 transverse reciprocating movement, in the process of moving, the volume of the first hollow rod 8 will be constantly from small to large, and then from big to small change, when the volume of the first hollow rod 8 is large, the pressure decreases, the cooling liquid in the water tank 5 will enter the first hollow rod 8 from the inlet pipe 7, and when the volume of the first hollow rod 8 is small, the pressure will increase, the cooling liquid in the first hollow rod 8 will enter the first water collecting box 11 from the outlet pipe 10, and then enter the plurality of cooling tubes 12, the cooling liquid will flow in the cooling tube 12, and then enter the second water collecting box 13, and finally from the backwater pipe 14 into the water tank 5, so as to achieve a water circulation effect, the cooling liquid in the cooling tube 12 circulation, can absorb the heat generated by the welding position, achieve the effect of rapid cooling, good cooling effect.

[0039] The upper surface of the table body 1 is fixedly installed with an L-shaped placement plate 18, the placement plate 18 is provided with a cavity, and the lower surface of the placement plate 18 is fixedly installed with a mist spray head 19 communicated with the cavity. The installation cavity 3 is provided with a water supply assembly for spraying the cooling liquid in the water tank 5 from the mist spray head 19 in mist form. The water supply assembly comprises an inlet pipe 20, an outlet pipe 21, a second hollow rod 22 with a closed end, and a second piston rod 23 slidably and sealingly inserted into the second hollow rod 22. The inlet pipe 20 is fixedly installed on the side wall of the water tank 5 and communicated with the water tank 5. One end of the inlet pipe 20 outside the water tank 5 is fixedly connected with the closed end of the second hollow rod 22. One end of the second piston rod 23 is fixedly connected with the surface of the sliding plate 17. The two ends of the outlet pipe 21 are fixedly connected with the second hollow rod 22 and the placement plate 18 respectively and communicated with the second hollow rod 22 and the cavity respectively. Second one-way valves are arranged in the inlet pipe 20 and the outlet pipe 21. The through direction of the second one-way valve in the inlet pipe 20 is from the water tank 5 to the second hollow rod 22. The through direction of the second one-way valve in the outlet pipe 21 is from the second hollow rod 22 to the cavity.

[0040] During the transverse reciprocating movement of the slide plate 17, the second piston rod 23 will move transversely within the second hollow rod 22, and the volume of the second hollow rod 22 will change from small to large and then from large to small. When the volume of the second hollow rod 22 increases, the pressure decreases, and the cooling liquid in the water storage tank 5 will enter the second hollow rod 22 from the inlet pipe 20. When the volume of the second hollow rod 22 decreases, the pressure increases, and the cooling liquid in the second hollow rod 22 will enter the cavity from the outlet pipe 21 and then be sprayed in mist form from the mist-shaped nozzle 19. The mist-shaped cooling liquid will also cool the welding station that is not in contact with the cooling pipe 12, and the overall cooling efficiency of the welding station will be improved.

[0041] The surface of the end of the cooling pipe 12 connected to the first water collecting box 11 is provided with a sliding port 24, and a baffle 25 for covering the water outlet is horizontally slidably inserted into the sliding port 24. The baffle 25 is controlled to move transversely by a pressing assembly. The pressing assembly includes an inclined plate 26 fixedly installed at one end of the baffle 25, an inclined port 27 formed in the surface of the inclined plate 26, a work-shaped block 28 slidably arranged in the inclined port 27, and an L-shaped connecting plate 29 fixedly installed on the surface of the work-shaped block 28. A plurality of connecting plates 29 are located directly below a plurality of cooling pipes 12. A stress rod 30 is fixedly installed on the upper surface of the connecting plate 29. A through port penetrating the top of the table body 1 is vertically formed on the upper surface of the cooling pipe 12. A plurality of stress rods 30 are vertically and sealingly inserted into the through port, and are connected to the cavity wall of the mounting cavity 3 through an extension component. The extension component includes an extension spring 31 sleeved on the stress rod 30, and the two ends of the extension spring 31 are fixedly connected to the upper surface of the connecting plate 29 and the top wall of the mounting cavity 3, respectively.

[0042] When the steel structure to be welded is not placed on the cooling pipes 12, the force bars 30 are not pressed by the steel structure, so the top ends of the force bars 30 are at the highest position under the elastic potential energy of the extension springs 31, at this time, the work blocks 28 are at the top of the inclined slots 27 respectively, the baffles 25 are located in the sliding slots 24 respectively, and the water outlets are covered by the baffles 25. When the steel structure is placed on the cooling pipes 12, the force bars 30 pressed by the steel structure are moved downward under the gravity of the steel structure, in the process of moving downward, the work blocks 28 slide in the inclined slots 27 and reach the bottom of the inclined slots 27, under the action of the inclined surface, the baffles 25 move horizontally, so that the water outlets covered by the end of the cooling pipes 12 in contact with the steel structure are in the open state. The cooling liquid in the first water collecting box 11 from the water storage tank 5 enters the cooling pipes 12 in contact with the steel structure through the water outlets in the open state, and the cooling pipes 12 not in contact with the steel structure are not supplied with the cooling liquid, that is, only the cooling pipes 12 in contact with the steel structure are supplied with the cooling liquid, and the cooling pipes 12 not in contact with the steel structure are not supplied with the cooling liquid, so as to avoid the useless work of the cooling liquid and improve the utilization rate of the cooling liquid.

[0043] The water storage tank 5 is provided with a display component for displaying the height of the liquid level in the water storage tank 5 outside the table body 1. The display component includes a U-shaped water pipe 32. The surface of the water storage tank 5 is provided with a first mounting hole, and the surface of the table body 1 is provided with a second mounting hole. The first mounting hole and the second mounting hole are located on the same horizontal line. The water pipe 32 is fixedly installed in the first mounting hole and the second mounting hole. The two ends of the water pipe 32 are located in the water storage tank 5 and outside the table body 1 respectively. The bottom surface of the water pipe 32 in the water storage tank 5 is horizontally provided with a water inlet 6. The water pipe 32 is made of transparent material.

[0044] The operator can quickly know the height of the liquid level in the water storage tank 5 by observing the liquid level in the end of the water pipe 32 outside the table body 1, so as to determine whether the cooling liquid needs to be added, without opening the door cover 4 to observe the amount of the cooling liquid in the water storage tank 5, thereby avoiding the failure to cool the welded part in time due to the untimely addition of the cooling liquid.

[0045] In the application, first, the steel structure to be welded is placed on the upper surface of the plurality of cooling pipes 12, after welding, the first piston rod 9 is controlled to move transversely and reciprocally by the driving assembly, in the moving process, the volume in the first hollow rod 8 changes from small to large and then from large to small, when the volume in the first hollow rod 8 becomes large, the pressure decreases, the cooling liquid in the water storage tank 5 enters the first hollow rod 8 from the water inlet pipe 7, when the volume in the first hollow rod 8 becomes small, the pressure increases, the cooling liquid in the first hollow rod 8 enters the first water collecting box 11 from the water outlet pipe 10, then enters the plurality of cooling pipes 12, the cooling liquid flows in the cooling pipes 12, then enters the second water collecting box 13, finally enters the water storage tank 5 from the backwater pipe 14, so as to achieve a water circulation effect, when the cooling liquid circulates in the cooling pipes 12, the heat generated by the welding position can be absorbed, so as to achieve a rapid cooling effect, and the cooling effect is good.

[0046] The above is only the preferred embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A cooling device for heavy-duty workshop box-type steel structure welding, comprising a table body (1), characterized in that, The back of the table body (1) is fixedly installed with a welding mechanical arm (2), the table body (1) is provided with an installation cavity (3) in the inside, the back of the table body (1) is provided with a through port communicated with the installation cavity (3), the through port is rotatably installed with a door cover (4), the installation cavity (3) is fixedly installed with a water storage tank (5) in the inside, the water storage tank (5) is filled with cooling liquid, the side wall of the water storage tank (5) is fixedly installed with a water inlet pipe (7) communicated with the water storage tank (5), one end of the water inlet pipe (7) located outside the water storage tank (5) is fixedly installed with a first hollow rod (8) with a closed end, the first hollow rod (8) is slidably and sealingly inserted with a first piston rod (9), the upper surface of the first hollow rod (8) is fixedly installed with a water outlet pipe (10), the water inlet pipe (7) and the water outlet pipe (10) are both provided with a first check valve; The top of the water outlet pipe (10) is fixedly installed with a first water collecting box (11) communicated with the water outlet pipe (10), the upper surface of the first water collecting box (11) is provided with a plurality of water outlets, the upper surface of the table body (1) is fixedly installed with a plurality of U-shaped cooling pipes (12), both ends of the cooling pipe (12) are penetrated into the installation cavity (3), one end of the plurality of cooling pipes (12) respectively covers a plurality of water outlets, and the other end is fixedly installed with a second water collecting box (13) communicated with the second water collecting box (13), the second water collecting box (13) is communicated with the water storage tank (5) through a backwater pipe (14), the first piston rod (9) is controlled to move transversely and reciprocally by a driving assembly; The driving assembly comprises a driving motor (15) fixedly installed on the side wall of the table body (1), a reciprocating screw rod (16) and a sliding plate (17) threadedly sleeved on the reciprocating screw rod (16), the output shaft of the driving motor (15) is penetrated into the installation cavity (3) and is fixedly connected with the reciprocating screw rod (16), one end of the first piston rod (9) is fixedly connected with the surface of the sliding plate (17); The upper surface of the table body (1) is fixedly installed with an L-shaped installation plate (18), the installation plate (18) is provided with a cavity in the inside, the lower surface of the installation plate (18) is fixedly installed with a mist sprayer (19) communicated with the cavity, the installation cavity (3) is provided with a water supply assembly for spraying the cooling liquid in the water storage tank (5) from the mist sprayer (19) in a mist form; The water supply assembly comprises a liquid inlet pipe (20), a liquid outlet pipe (21), a second hollow rod (22) with a closed end and a second piston rod (23) slidably and sealingly inserted in the second hollow rod (22), the liquid inlet pipe (20) is fixedly installed on the side wall of the water storage tank (5) and is communicated with the water storage tank (5), one end of the liquid inlet pipe (20) located outside the water storage tank (5) is fixedly connected with the closed end of the second hollow rod (22), one end of the second piston rod (23) is fixedly connected with the surface of the sliding plate (17), both ends of the liquid outlet pipe (21) are respectively fixedly connected with the second hollow rod (22) and the installation plate (18), and are respectively communicated with the second hollow rod (22) and the cavity, the liquid inlet pipe (20) and the liquid outlet pipe (21) are both provided with a second check valve.

2. The cooling device for welding of heavy-duty workshop box-type steel structures according to claim 1, characterized in that, The surface of the end of the cooling pipe (12) connected with the first water collecting box (11) is provided with a sliding opening (24), a baffle (25) for covering the water outlet is horizontally slidably inserted into the sliding opening (24), and the baffle (25) is controlled to move transversely by a pressing assembly.

3. The cooling device for welding of heavy duty workshop box type steel structure according to claim 2, characterized in that, The pressing assembly comprises an inclined plate (26) fixedly installed at one end of the baffle (25), an inclined opening (27) formed in the surface of the inclined plate (26), a work-shaped block (28) slidably arranged in the inclined opening (27), and an L-shaped connecting plate (29) fixedly installed on the surface of the work-shaped block (28), a plurality of the connecting plates (29) are respectively located below a plurality of the cooling pipes (12), a stress rod (30) is fixedly installed on the upper surface of the connecting plate (29), a through opening vertically formed in the top of the table body (1) is provided on the upper surface of the cooling pipe (12), a plurality of the stress rods (30) are vertically slidably and sealingly inserted into the through opening and connected with the cavity wall of the mounting cavity (3) through an extension component.

4. The cooling device for welding of heavy-duty workshop box-type steel structures according to claim 3, characterized in that, The extension component comprises a telescopic spring (31) sleeved on the stress rod (30), and the two ends of the telescopic spring (31) are fixedly connected with the upper surface of the connecting plate (29) and the top wall of the mounting cavity (3) respectively.

5. The cooling device for welding of heavy duty workshop box type steel structure according to claim 4, characterized in that, The water storage tank (5) is provided with a display component, and the display component is used for displaying the level of the cooling liquid in the water storage tank (5) outside the table body (1).

6. The cooling device for welding of heavy duty workshop box type steel structure according to claim 5, characterized in that, The display component comprises a U-shaped water pipe (32), a first mounting opening is formed in the surface of the water storage tank (5), a second mounting opening is formed in the surface of the table body (1), the first mounting opening and the second mounting opening are located on the same horizontal line, the water pipe (32) is fixedly installed in the first mounting opening and the second mounting opening, the two ends of the water pipe (32) are located in the water storage tank (5) and outside the table body (1) respectively, a water inlet (6) is horizontally formed in the bottom surface of the water pipe (32) in the water storage tank (5), and the water pipe (32) is made of transparent material.

7. The method for welding a cooling device for a heavy-duty vehicle bay type steel structure according to claim 6, characterized in that, Firstly, the steel structure to be welded is placed on the upper surfaces of the plurality of cooling pipes (12), after welding, the first piston rod (9) is controlled to move transversely by the driving assembly, in the moving process, the volume in the first hollow rod (8) changes from small to large and then from large to small, when the volume in the first hollow rod (8) becomes large, the pressure decreases, the cooling liquid in the water storage tank (5) enters the first hollow rod (8) from the water inlet pipe (7), when the volume in the first hollow rod (8) becomes small, the pressure increases, the cooling liquid in the first hollow rod (8) enters the first water collecting box (11) from the water outlet pipe (10), then enters the plurality of cooling pipes (12), the cooling liquid flows in the cooling pipes (12), then enters the second water collecting box (13), and finally enters the water storage tank (5) from the backwater pipe (14), so that a water circulation effect is achieved, when the cooling liquid circulates in the cooling pipes (12), the heat generated at the welding position can be absorbed, and a rapid cooling effect is achieved.

Images