A welding device for a bimetallic wing plate of a middle trough of a scraper and the bimetallic wing plate

Abstract

The application discloses a kind of welding device and bimetal wing plate in middle trough of scraper, belong to wing plate welding device technical field, including base, first portal frame and second portal frame are fixed on the base, cross arm is fixed between the first portal frame and second portal frame, the lower surface of cross arm is symmetrically equipped with electric telescopic rod, the output shaft of two electric telescopic rods is commonly fixed with upper clamping mechanism, for clamping bimetal wing plate;First moving mechanism and second moving mechanism are arranged between the first portal frame and second portal frame, cleaning and polishing mechanism is fixed on the first moving mechanism, carbon dioxide protective welding machine is installed on the base, and the welding torch of carbon dioxide protective welding machine is fixed on second moving mechanism;The application integrates cleaning and welding function, automatically completes cleaning and welding, reduces the time and manpower of step operation, improves the coherence and efficiency of overall work process.

Description

Technical Field

[0001] This invention relates to the field of wing plate welding equipment, specifically to a welding device for a bimetallic wing plate in the middle trough of a scraper conveyor and the bimetallic wing plate itself. Background Technology

[0002] The scraper conveyor structure includes baffles, trough sides, middle plate, and bottom plate. Statistics show that the middle trough is the most severely damaged component of the scraper conveyor. The highest wear probability locations within the middle trough are the upper edge of the trough side, the middle plate, and the bottom plate, with 90% of the wear occurring at the upper edge of the trough side. The wear problem in the middle trough directly affects the service life of the entire scraper conveyor and is closely related to the company's ability to maintain continuous and reliable production. The middle trough experiences complex stress conditions during operation, bearing the forces of both coal and the scraper, placing high demands on the fatigue limit and strength of structural components, including the trough side and baffles. However, even under unpredictable load conditions, the middle trough remains a component prone to severe wear.

[0003] The existing channel side has a one-piece design structure. In order to reduce the wear of the upper edge of the channel side, a bimetallic wing plate is designed to be applied to the upper edge of the middle channel. The wing plate needs to be connected to the middle channel by welding to improve the life of the local wear-prone parts. However, the material needs to be cleaned during the welding process, otherwise the dirt and oxides on its surface will have an adverse effect on the welding quality. Cleaning requires removing oil stains and surface oxides from the welding area. Currently, welding and cleaning require multiple machines to operate in steps, which delays work efficiency, and the transfer of materials also requires a lot of manpower. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for a bimetallic wing plate in the middle trough of a scraper conveyor and the bimetallic wing plate itself, solving the following technical problems: During the welding process, the material needs to be cleaned, otherwise the dirt and oxides on its surface will have an adverse effect on the welding quality. Cleaning requires removing oil stains and oxides from the welding area. Currently, welding and cleaning require multiple devices to operate in steps, which delays work efficiency, and the transfer of materials also requires a lot of manpower.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A welding device for a bimetallic wing plate in the middle trough of a scraper conveyor includes a base, on which a first gantry and a second gantry are fixed. A crossbeam is fixed between the first gantry and the second gantry. Electric telescopic rods are symmetrically installed on the lower surface of the crossbeam. The output shafts of the two electric telescopic rods are jointly fixed to an upper clamping mechanism for clamping the bimetallic wing plate.

[0007] A first moving mechanism and a second moving mechanism are provided between the first gantry frame and the second gantry frame. A cleaning and grinding mechanism is fixed on the first moving mechanism. A carbon dioxide shielded welding machine is installed on the base. The welding gun of the carbon dioxide shielded welding machine is fixed on the second moving mechanism.

[0008] The cleaning and polishing mechanism includes two wiping cloths, a polishing component, and a housing. The wiping cloths are used to remove oil stains from the welded area, the polishing component is used to remove oxide scale from the welded area, and the housing is filled with cleaning agent. When the first moving mechanism drives the cleaning and polishing mechanism to move, the housing provides cleaning agent to the wiping cloths.

[0009] As a further aspect of the present invention: the cleaning and polishing mechanism further includes a mounting plate, the housing is fixed to one side of the mounting plate, a first liquid outlet pipe is connected to the bottom of the housing, a second liquid outlet pipe is connected to one end of the first liquid outlet pipe, liquid outlet plates are fixed to both ends of the second liquid outlet pipe, two wiping cloths are respectively fixed to the side walls of the two liquid outlet plates that are far apart, and pressure valves are installed at both ends of the second liquid outlet pipe.

[0010] As a further embodiment of the present invention: a fixing ring is fixed to the top and the top of one side wall of the mounting plate, an active rod is movably sleeved between the two fixing rings, a driven rod is fixed to the active rod, a driven plate is fixed to one end of the driven rod, and the grinding assembly is fixed to the side wall of the driven plate.

[0011] As a further aspect of the present invention: the grinding assembly includes a drive box, which is fixed to the side wall of the driven plate by a connecting rod. The top and bottom of the drive box are rotatably mounted with rotating shafts. Grinding discs are mounted at the ends of the two rotating shafts that are far apart from each other. First bevel gears are mounted at the ends of the two rotating shafts that are close to each other. A grinding motor is mounted on one side of the drive box. The output shaft of the grinding motor is connected to a second bevel gear, and the second bevel gear meshes with the first bevel gear.

[0012] As a further embodiment of the present invention: a U-shaped tube is also fixed on the driven plate, and branch pipes are fixed at both ends of the U-shaped tube. Air outlets are evenly arranged on one side of the branch pipe along the length direction. The U-shaped tube is connected to an external air source through a flexible hose.

[0013] As a further aspect of the present invention: the upper clamping mechanism includes two support plates, which are respectively connected to the output shafts of two electric telescopic rods. A third spring is connected to the bottom of the support plate, and a positioning plate is connected to the bottom of multiple third springs. Multiple clamping components are fixed on the side of the positioning plate that is close to the base. Each clamping component includes a fixing block, and a screw is threadedly connected to the fixing block. A clamping block is rotatably installed at one end of the screw, and a knob is installed at the other end.

[0014] As a further aspect of the present invention: a round-headed rod is fixed to the bottom of the active rod; multiple protrusions are evenly installed along the length of the upper surface of the base, and the protrusions are located directly below the round-headed rod; an air pump is installed on the side wall of the mounting plate; the air outlet pipe of the air pump is connected to the housing; a first spring is fitted on the piston rod of the air pump; a second spring is connected to the inner surface of the top wall of the housing; a piston plate is connected to the bottom of the second spring; the piston plate is located above the cleaning agent; a push block is fixed to one side of the active rod; a pressure relief pipe is connected to the top of the housing; a liquid filling pipe is connected to one side of the housing; and sealing blocks are installed on both the pressure relief pipe and the liquid filling pipe.

[0015] As a further aspect of the present invention: both the first moving mechanism and the second moving mechanism are composed of a lead screw, a moving block, a guide rod, and a drive motor. The two ends of the lead screw are rotatably connected to the first gantry and the second gantry, respectively. The moving block is threaded onto the lead screw. The guide rod is movably connected to the moving block, and the two ends of the guide rod are fixed to the first gantry and the second gantry, respectively. The drive motor is mounted on the first gantry, and the output shaft of the drive motor is connected to the lead screw. One of the moving blocks is fixedly connected to the welding torch of the CO2 shielded welding machine, and the other moving block is fixedly connected to the mounting plate.

[0016] A bimetallic wing plate is welded using a welding device for bimetallic wing plates in the middle trough of a scraper conveyor. The bimetallic wing plate is welded to the trough side using a carbon dioxide shielded welding machine. The bimetallic wing plate is produced by composite production of two metal materials: the welding part is made of 35SiMn alloy steel, and the wear-resistant part is made of Cr26 high chromium alloy.

[0017] The beneficial effects of this invention are:

[0018] (1) By setting up and integrating cleaning and welding functions, the present invention realizes automated processing. The first moving mechanism drives the cleaning and polishing mechanism to move. The wiping cloth and polishing components work together to remove oil stains and some surface oxides. Then the welding operation is carried out. The whole device automatically completes cleaning and welding through mechanical movement, which reduces the time and manpower of step-by-step operation and improves the continuity and efficiency of the overall workflow.

[0019] (2) By setting up a mounting plate, a first liquid outlet pipe, a second liquid outlet pipe and other structures, the cleaning agent inside the box automatically flows to the wiping cloth, so that the wiping cloth remains moist throughout the cleaning process, thereby improving the cleaning effect;

[0020] (3) The grinding assembly of the present invention consists of a drive box, a driven plate, a rotating shaft, a first bevel gear and a second bevel gear. During the grinding process, the grinding motor drives the two grinding discs to rotate and grinds the welding surface at the same time, thereby improving the grinding efficiency. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a first-view structural diagram of the entire invention;

[0023] Figure 2 This is a second-view structural diagram of the entire invention;

[0024] Figure 3 This is a third-view structural diagram of the entire invention;

[0025] Figure 4 This is a first-view structural schematic diagram of the cleaning and polishing mechanism of the present invention;

[0026] Figure 5 This is a second-view structural schematic diagram of the cleaning and polishing mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the polishing component of the present invention;

[0028] Figure 7 This is a schematic diagram of the clamping mechanism of the present invention;

[0029] Figure 8 yes Figure 3 Enlarged view of point A in the middle;

[0030] Figure 9 This is a schematic diagram of the structure of the box and the air pump of the present invention.

[0031] In the diagram: 1. Base; 2. First gantry frame; 3. Second gantry frame; 4. Crossbeam; 5. Electric telescopic rod; 6. Upper clamping mechanism; 601. Positioning plate; 602. Third spring; 603. Support plate; 604. Fixing block; 605. Screw; 606. Clamping block; 607. Knob; 7. First moving mechanism; 701. Lead screw; 702. Moving block; 703. Guide rod; 8. Cleaning and polishing mechanism; 801. Mounting plate; 802. Housing; 803. First liquid outlet pipe; 804. Second liquid outlet pipe; 805. Liquid outlet plate; 806. Wiping cloth 807. Fixed ring; 808. Driving rod; 809. Driven rod; 810. Driven plate; 811. Grinding assembly; 812. U-shaped tube; 813. Branch pipe; 814. Air outlet; 815. Round head rod; 816. Drive box; 817. Rotating shaft; 818. Grinding disc; 819. First bevel gear; 820. Grinding motor; 821. Second bevel gear; 822. Push block; 823. Air pump; 824. First spring; 825. Second spring; 826. Piston plate; 9. CO2 shielded welding machine; 10. Second moving mechanism; 11. Protrusion.

[0032] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate this embodiment, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual size and shape of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1 to 5 As shown, this invention is a welding device for a bimetallic wing plate in the middle trough of a scraper conveyor. It includes a base 1, on which a first gantry 2 and a second gantry 3 are fixed. A crossbeam 4 is fixed between the first gantry 2 and the second gantry 3. Electric telescopic rods 5 are symmetrically mounted on the lower surface of the crossbeam 4. The output shafts of the two electric telescopic rods 5 are jointly fixed to an upper clamping mechanism 6 for clamping the bimetallic wing plate. A first moving mechanism 7 and a second moving mechanism 10 are arranged between the first gantry 2 and the second gantry 3. A cleaning and grinding mechanism 8 is fixed on the first moving mechanism 7. A CO2 shielded welding machine 9 is mounted on the base 1, and the welding torch of the CO2 shielded welding machine 9 is fixed on the second moving mechanism 10. The cleaning and grinding mechanism 8 includes two wiping cloths 806, a grinding assembly 811, and a housing 802. The wiping cloths 806 are used to clean the weld area. Oil stains are removed by the grinding component 811, which is used to remove oxide scale from the weld. The housing 802 contains cleaning agent. When the first moving mechanism 7 moves the cleaning and grinding mechanism 8, the housing 802 provides cleaning agent to the wiping cloth 806. In use, the bimetallic wing plate is first clamped and fixed by the upper clamping mechanism 6, and then the groove is placed on the base 1. The position of the bimetallic wing plate is adjusted by the electric telescopic rod 5 so that the two wiping cloths 806 contact the sides of the bimetallic wing plate and the groove respectively. The first moving mechanism 7 moves the cleaning and grinding mechanism 8 to clean the oil stains first, and then the grinding component 811 is used to clean the oxides. Finally, the second moving mechanism 10 and the CO2 shielded welding machine 10 cooperate to complete the welding operation, which reduces the time and manpower of the step-by-step operation and improves the continuity and efficiency of the overall workflow.

[0035] See Figure 2 and Figure 4The cleaning and polishing mechanism 8 also includes a mounting plate 801. The housing 802 is fixed to one side of the mounting plate 801. A first liquid outlet pipe 803 is connected to the bottom of the housing 802. One end of the first liquid outlet pipe 803 is connected to a second liquid outlet pipe 804. Liquid outlet plates 805 are fixed to both ends of the second liquid outlet pipe 804. Two wiping cloths 806 are respectively fixed to the side walls of the two liquid outlet plates 805 that are far apart. Pressure valves are installed at both ends of the second liquid outlet pipe 804. The cleaning liquid is stably supplied to the wiping cloths 806 by the housing 802, the first liquid outlet pipe 803, the second liquid outlet pipe 804 and the liquid outlet plates 805 to ensure the cleaning effect.

[0036] See Figure 5 A fixing ring 807 is fixed to the top and the top of one side wall of the mounting plate 801. An active rod 808 is movably sleeved between the two fixing rings 807. A driven rod 809 is fixed on the active rod 808. A driven plate 810 is fixed to one end of the driven rod 809. The grinding assembly 811 is fixed to the side wall of the driven plate 810.

[0037] See Figure 5 and Figure 6 The grinding assembly 811 includes a drive housing 816, which is fixed to the side wall of the driven plate 810 via a connecting rod. Rotary shafts 817 are rotatably mounted on the top and bottom of the drive housing 816. Grinding discs 818 are mounted on the ends of the two shafts 817 that are far apart. First bevel gears 819 are mounted on the ends of the two shafts 817 that are close together. A grinding motor 820 is mounted on one side of the drive housing 816. The output shaft of the grinding motor 820 is connected to a second bevel gear 821, which meshes with the first bevel gear 819. The driven plate 810 also has… A U-shaped tube 812 is fixed, and branch pipes 813 are fixed at both ends of the U-shaped tube 812. Air outlets 814 are evenly arranged along the length of one side of the branch pipes 813. The U-shaped tube 812 is connected to an external air source through a hose. When grinding, the grinding motor 820 is started, which drives the second bevel gear 821 to rotate. The second bevel gear 821 meshes with the first bevel gear 819, thereby driving the two rotating shafts 817 and the grinding disc 818 to rotate, completing the grinding of the welded surface. During grinding, the air blown out through the air outlets 814 removes the waste generated during grinding.

[0038] See Figure 1 and Figure 7The upper clamping mechanism 6 includes two support plates 603, which are respectively connected to the output shafts of two electric telescopic rods 5. The bottom of the support plate 603 is connected to a third spring 602. The bottom of multiple third springs 602 are connected to a positioning plate 601. Multiple clamping components are fixed on the side of the positioning plate 601 that is close to the base 1. The clamping components include a fixing block 604. A screw 605 is threaded onto the fixing block 604. A clamping block 606 is rotatably installed on one end of the screw 605, and a knob 607 is installed on the other end.

[0039] See Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9 A round-headed rod 815 is fixed to the bottom of the active rod 808. Multiple protrusions 11 are evenly installed along the length of the upper surface of the base 1, with the protrusions 11 located directly below the round-headed rod 815. An air pump 823 is installed on the side wall of the mounting plate 801. The air outlet pipe of the air pump 823 is connected to the housing 802. A first spring 824 is fitted onto the piston rod of the air pump 823. A second spring 825 is connected to the inner surface of the top wall of the housing 802, and a piston plate is connected to the bottom of the second spring 825. 826, the piston plate 826 is located above the cleaning agent, a push block 822 is fixed on one side of the active rod 808, a pressure relief pipe is connected to the top of the housing 802, and a liquid filling pipe is connected to one side of the housing 802. Both the pressure relief pipe and the liquid filling pipe are equipped with sealing blocks. When the mounting plate 801 moves, the active rod 808 jumps up and down continuously because the round rod 815 is in contact with the protrusion 11. Thus, the air pump 823 is used to inflate the housing 802, so that the cleaning agent can be automatically discharged while moving.

[0040] See Figures 1 to 3 Both the first moving mechanism 7 and the second moving mechanism 10 consist of a lead screw 701, a moving block 702, a guide rod 703, and a drive motor. The two ends of the lead screw 701 are rotatably connected to the first gantry 2 and the second gantry 3, respectively. The moving block 702 is threadedly connected to the lead screw 701. The guide rod 703 is movably connected to the moving block 702, and the two ends of the guide rod 703 are fixed to the first gantry 2 and the second gantry 3, respectively. The drive motor is mounted on the first gantry 2, and the output shaft of the drive motor is connected to the lead screw 701. One of the moving blocks 702 is fixedly connected to the welding torch of the CO2 shielded welding machine 9, and the other moving block 702 is fixedly connected to the mounting plate 801. Starting the drive motor drives the lead screw 701 to rotate, which allows the moving block 702 to move along the guide rod 703.

[0041] A bimetallic wing plate is welded using a welding device for bimetallic wing plates in the middle trough of a scraper conveyor. The bimetallic wing plate is welded to the trough side using a carbon dioxide shielded welding machine 9. The bimetallic wing plate is produced by composite production of two metal materials: the welding part is made of 35SiMn alloy steel, and the wear-resistant part is made of Cr26 high-chromium alloy. This improves wear resistance while ensuring strength and toughness, and can be widely used in coal mining production equipment under various geological conditions.

[0042] The working principle of this invention is as follows: In use, the bimetallic wing plate is first clamped and fixed by the upper clamping mechanism 6, and then the groove is placed on the base 1 and fixed by the clamping assembly on the base 1. The position of the bimetallic wing plate is first adjusted by the electric telescopic rod 5 so that the two wiping cloths 806 respectively contact the sides of the bimetallic wing plate and the groove. The first moving mechanism 7 drives the cleaning and polishing mechanism 8 to move from one end of the bimetallic wing plate to the other end. The two wiping cloths 806 first clean the oil stains, and then the polishing assembly 811 cleans the oxides.

[0043] When the cleaning and polishing mechanism 8 moves, the round-headed rod 815 at the bottom of the active rod 808 continuously contacts the protrusion 11, causing the active rod 808 to jump up and down continuously. This causes the push block 822 to continuously squeeze the piston rod of the air pump 823, pressurizing the housing 802. This causes the piston plate 826 to move down and squeeze out the cleaning agent. The cleaning agent will enter the first liquid outlet pipe 803 and the second liquid outlet pipe 804. Since pressure valves are set at both ends of the second liquid outlet pipe 804, as the pressure increases, the cleaning agent will enter the liquid outlet plate 805, which will keep the wiping cloth 806 constantly wet, improving the cleaning effect on oil stains.

[0044] The grinding assembly 811 moves synchronously, starting the grinding motor 820. The grinding motor 820 drives the second bevel gear 821 to rotate. The second bevel gear 821 meshes with the first bevel gear 819, thereby driving the two rotating shafts 817 and the grinding disc 818 to rotate, completing the grinding of the welded surface. During grinding, an external air source (not shown) supplies air to the U-shaped tube 812. Finally, the air blown out by the air outlet 814 blows away the waste generated during grinding. Since the active rod 808 also drives the grinding assembly 811 to jump up and down when it jumps up and down, the grinding disc 818 will briefly detach from the surface of the groove. This is to thoroughly blow away the waste and prevent the debris generated during grinding from being rolled back into the grinding area and pressed into the material, causing scratches. Due to the presence of the third spring 602, the bimetallic wing plate will also be pushed and vibrate, accelerating the falling of waste.

[0045] After the material is cleaned and polished, the cleaning and polishing mechanism 8 disengages from the bimetallic wing plate and the groove side. The second moving mechanism 10 moves the welding torch of the CO2 shielded welding machine 9 to one end of the material, and the electric telescopic rod 5 drives the bimetallic wing plate to descend so that it contacts the groove side. Finally, the second moving mechanism 10 drives the welding torch to move and starts the CO2 shielded welding machine 9 to complete the welding and ensure the welding effect.

[0046] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A welding device for a bimetallic wing plate in the middle trough of a scraper conveyor, comprising a base (1), wherein a first gantry (2) and a second gantry (3) are fixed on the base (1), characterized in that, A crossbeam (4) is fixed between the first gantry (2) and the second gantry (3). Electric telescopic rods (5) are symmetrically installed on the lower surface of the crossbeam (4). The output shafts of the two electric telescopic rods (5) are jointly fixed with an upper clamping mechanism (6) for clamping the bimetallic wing plate. A first moving mechanism (7) and a second moving mechanism (10) are provided between the first gantry (2) and the second gantry (3). A cleaning and grinding mechanism (8) is fixed on the first moving mechanism (7). A carbon dioxide shielded welding machine (9) is installed on the base (1). The welding gun of the carbon dioxide shielded welding machine (9) is fixed on the second moving mechanism (10). The cleaning and polishing mechanism (8) includes two wiping cloths (806), a polishing component (811), and a housing (802). The wiping cloths (806) are used to remove oil stains from the welded area, the polishing component (811) is used to remove oxide scale from the welded area, and the housing (802) is provided with cleaning agent. When the first moving mechanism (7) drives the cleaning and polishing mechanism (8) to move, the housing (802) provides cleaning agent to the wiping cloths (806). The cleaning and polishing mechanism (8) also includes a mounting plate (801), the housing (802) is fixed on one side of the mounting plate (801), the bottom of the housing (802) is connected to a first liquid outlet pipe (803), one end of the first liquid outlet pipe (803) is connected to a second liquid outlet pipe (804), both ends of the second liquid outlet pipe (804) are fixed with liquid outlet plates (805), two wiping cloths (806) are respectively fixed on the side walls of the two liquid outlet plates (805) that are far apart, and pressure valves are installed at both ends of the second liquid outlet pipe (804); The mounting plate (801) has a fixing ring (807) fixed on the top and bottom of one side wall. An active rod (808) is movably sleeved between the two fixing rings (807). A driven rod (809) is fixed on the active rod (808). A driven plate (810) is fixed at one end of the driven rod (809). The grinding assembly (811) is fixed on the side wall of the driven plate (810). The grinding assembly (811) includes a drive box (816), which is fixed to the side wall of the driven plate (810) by a connecting rod. The top and bottom of the drive box (816) are rotatably mounted with shafts (817). A grinding disc (818) is mounted at the ends of the two shafts (817) that are far apart. A first bevel gear (819) is mounted at the ends of the two shafts (817) that are close to each other. A grinding motor (820) is mounted on one side of the drive box (816). The output shaft of the grinding motor (820) is connected to a second bevel gear (821), and the second bevel gear (821) meshes with the first bevel gear (819). A U-shaped tube (812) is also fixed on the driven plate (810). Both ends of the U-shaped tube (812) are fixed with branch pipes (813). An air outlet (814) is evenly arranged on one side of the branch pipe (813) along the length direction. The U-shaped tube (812) is connected to an external air source through a flexible hose. A round-headed rod (815) is fixed to the bottom of the active rod (808). Multiple protrusions (11) are evenly installed along the length of the upper surface of the base (1), with the protrusions (11) located directly below the round-headed rod (815). An air pump (823) is installed on the side wall of the mounting plate (801). The air outlet pipe of the air pump (823) is connected to the housing (802). A first spring (82) is fitted onto the piston rod of the air pump (823). 4) A second spring (825) is connected to the inner surface of the top wall of the box (802). A piston plate (826) is connected to the bottom of the second spring (825). The piston plate (826) is located above the cleaning agent. A push block (822) is fixed to one side of the active rod (808). A pressure relief pipe is connected to the top of the box (802). A liquid filling pipe is connected to one side of the box (802). A sealing block is installed on both the pressure relief pipe and the liquid filling pipe.

2. The welding device for the bimetallic wing plate of the middle trough of a scraper conveyor according to claim 1, characterized in that, The upper clamping mechanism (6) includes two support plates (603), which are respectively connected to the output shafts of two electric telescopic rods (5). The bottom of the support plate (603) is connected to a third spring (602), and the bottom of multiple third springs (602) is connected to a positioning plate (601). Multiple clamping components are fixed on the side of the positioning plate (601) and the base (1) that are close to each other. The clamping components include a fixing block (604), and a screw (605) is threaded onto the fixing block (604). A clamping block (606) is rotatably installed on one end of the screw (605), and a knob (607) is installed on the other end.

3. The welding device for the bimetallic wing plate of the middle trough of a scraper conveyor according to claim 2, characterized in that, The first moving mechanism (7) and the second moving mechanism (10) are both composed of a lead screw (701), a moving block (702), a guide rod (703) and a drive motor. The two ends of the lead screw (701) are rotatably connected to the first gantry (2) and the second gantry (3) respectively. The moving block (702) is threadedly connected to the lead screw (701). The guide rod (703) is movably connected to the moving block (702), and the two ends of the guide rod (703) are fixed on the first gantry (2) and the second gantry (3) respectively. The drive motor is installed on the first gantry (2), and the output shaft of the drive motor is connected to the lead screw (701). One of the moving blocks (702) is fixedly connected to the welding gun of the carbon dioxide shielded welding machine (9), and the other moving block (702) is fixedly connected to the mounting plate (801).

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